JPS63231242A - Material tester - Google Patents

Abstract

PURPOSE:To exactly measure the penetration depth of an indenter into a mate rial piece by pushing and penetrating the indenter via a member for transmitting the pressing force of the indenter into the material piece by means of a member for pressing the indenter. CONSTITUTION:A magnetic piece 61b constituting a moving element moves until a shaft sleeve 25 presses a pointed end 33 of the indenter 32 to the surface 1a of the material piece 1, then said piece moves to compress a coil spring 41 so as to penetrate and bring the end 33 into the material piece 1. The posi tion in the air core of a magnetic transformer 61a which constitutes a stationary element is moved from the state in which a pressure receiving part 32b is re ceived by a stepped surface 30 between shaft sleeve parts 25a and 25b of a shaft sleeve 25 to the direction opposite from the indenter 32. The coil spring 41 as the member for transmitting the pressing force consisting of an elastic bed material is then compressed. The output indicating the quantity of compres sion of the spring 41 is, therefore, obtd. from the transformer 61a. This quantity of compression corresponds to the pressing force that the presser 32 presses the material piece 1.

Description

[Detailed Description of the Invention] The present invention relates to the hardness, tensile strength, yield stress, elastic modulus, creep behavior, etc. of a material piece (hereinafter, for simplicity, the hardness, tensile strength, yield stress, etc. of a material piece, etc.) ) is the amount of penetration of the indenter into the material piece when the pressing force of the indenter on the material piece takes a predetermined first value when the indenter is pushed into the material piece to make an indentation on the material piece. Then, the pressing force of the indenter against the material piece when separating the indenter from the material piece after making an indentation on the material piece by pushing the indenter into the material piece is a predetermined first value or another second value. The present invention relates to a material testing machine that measures the amount of penetration of an indenter into a piece of material when taking a value of .

Conventionally, when an indenter is pushed into a piece of material to make an impression on the piece of material, the pressure of the indenter into the piece of material when the pressing force of the indenter on the piece of material takes a predetermined first value. amount of intrusion,
The pressing force of the indenter against the material piece is set to a predetermined first value or another second value when the indenter is moved away from the material piece after the indenter is pushed into the material piece and an indentation is made on the material piece.
As a material testing machine that measures using one or both of the amount of penetration of the indenter into the material piece when taking the value of
A material piece holding body that holds a material piece, an indenter that presses into the material piece held by the material piece holding body and makes an impression on the material piece, and an indenter that pushes the indenter into the material piece. an indenter pressing member that presses as shown in FIG. In this case, the indenter penetration amount detection means has a displacement detector for detecting indenter penetration having a stator and a movable element, and the displacement detector for detecting indenter penetration is fixed. The indenter is fixed to one of the indenter and the material piece holding body, and the movable element of the displacement detector for detecting indenter penetration has its free end in contact with the other of the indenter and the material piece holding body. A device having the following configuration has been proposed.

According to the material testing machine having such a configuration, even when an indentation is made on a piece of material with an indenter, and even when the indenter is separated from a piece of material after making an indentation on a piece of material with an indenter, the indenter pressing force is The pressure on the material piece of the indenter can be measured by the detection output of the indenter pressing force from the detection means, and the indenter pressure detection output from the displacement detector for detecting the indenter penetration of the indenter penetration detection means Since it is possible to measure the amount of penetration of the indenter into the material piece, it is possible to measure the hardness of the material piece.

[Problem to be Solved by the Invention] However, in the conventional material testing machine, the configuration of the indenter pressing force detection means for detecting the indenter pressing force with which the indenter presses the material piece is complicated, and for this reason, material testing is difficult. There were certain limits to making the machine as a whole smaller and cheaper.

In addition, in the case of a conventional material testing machine, the stator of the displacement detector for detecting indenter penetration of the indenter penetration detection means is fixed to the material piece holding body that holds the material piece, or the free end of the mover are in contact with each other, the indenter pressing force detection output from the displacement detector for detecting the indenter intrusion of the indenter intrusion detection means indicates what kind of surface the material piece holding body is and the material piece holding body. It is a value that is influenced by how the piece of material is held on the body. In addition, the indenter intrusion detection output from the displacement detector for detecting indenter intrusion of the indenter intrusion detection means indicates that when the material piece is pressed by the indenter, the surface of the material piece is at the initial height of the head when viewed from the material piece holding body. It is obtained as a value that includes an error due to the descent from . Therefore, it is not possible to accurately measure the amount of penetration of the indenter into the material piece, which can be measured by the indenter penetration detection output from the indenter penetration detection displacement detector of the indenter penetration amount detection means. Can not.

Therefore, conventional material testing machines have the disadvantage that they cannot accurately measure the hardness of a piece of material.

In order to solve the problem, the present invention therefore seeks to propose a new material testing machine that does not have the above-mentioned drawbacks.

The material testing machines according to the first, second, third, fourth, and fifth inventions of the present invention, as in the case of conventional material testing machines, include a material piece holding body that holds a material piece, and a material piece holding body that holds a material piece. an indenter for pressing in and making an indentation on a piece of material; an indenter pressing member for pressing the indenter so that it presses and intrudes into a piece of material;
It has an indenter pressing force detection means for detecting the indenter pressing force with which the indenter presses the material piece, and an indenter penetration period detection means for detecting the indenter penetration period during which the indenter penetrates into the sample piece.

However, in the material testing machine according to the first invention of the present application, in the material testing machine having such a configuration, an indenter pressing force transmission member is inserted between the indenter pressing member and the indenter,
The indenter pressing force transmitting member is made of a resilient material, and the pressure detecting means is connected to a stator fixed to one of the indenter and the indenter pressing member, and a free end of the stator to the other of the indenter and the indenter pressing member. and a displacement detector for detecting an indenter pressing force.

Further, the material testing glue according to the second invention of the present application is such that in the material testing machine according to the first invention of the present application, the indenter penetration detection means includes a contactor that contacts the material piece from the surface, a stator and a movable and a displacement detector for detecting indenter penetration, the stator of which is fixed to either the indenter or the contactor, and the movable element of the displacement detector for detecting indenter penetration detects the free end of the indenter. and the other contactor.

Further, in the material testing machine according to the third invention of the present application, in the material testing machine according to the first invention of the present application, the indenter penetration detection means is configured such that (a) when the indenter pressing member moves to press the indenter; , pulse generating means for generating a pulse train in accordance with the movement of the indenter; and counting means for counting from the value to the second value.

Further, the material testing machine according to the fourth invention of the present application is the material testing machine according to the first invention of the present application, in which the indenter penetration detection means is configured such that (a) the indenter pressing member presses the indenter; When moving in the direction, the first
When the indenter pressing member moves in a first direction and then moves in a second direction opposite to the first direction, a second pulse train is generated in accordance with the movement. (b) Based on the output from the indenter pressing force detecting means, the first pulse train from the pulse generating means is set so that the pressing force of the indenter against the material piece ranges from the first value to the first value. 2
The second pulse train from the pulse generating means is counted as the first count value until the pressing force of the indenter against the material piece reaches the first value from the second value. and counting means for counting as a second count value during the interval to obtain a count value of the difference between the first count value and the second count value.

Furthermore, according to the material test according to the fifth invention of the present application, in the material testing machine according to the first invention of the present application, the indenter penetration detection means is configured such that (a) the indenter pressing member presses the indenter in the first When the indenter pressing member moves in a second direction opposite to the first direction, a first pulse train is generated in accordance with the movement, and when the indenter pressing member moves in a second direction opposite to the first direction, a first pulse train is generated in response to the movement. pulse generating means for generating a pulse train of <b
) a contact whose l end is in contact with one of the surfaces of the indenter pressing member or the indenter and the material piece, and (c) the other of the indenter pressing member or the indenter and the material piece and the contact. A first pulse train from the pulse generating means is generated based on the output from the switch having first and second contacts respectively provided, and (d) the indenter pressing force detecting means.
The period until the pressing force of the indenter against the material piece reaches a second value is counted as the first count value, and the second pulse train from the pulse generating means is applied to the pressing force of the indenter against the material piece. Until the pressure changes from the second value to the first value, the second
While the switch is on, the first pulse train from the pulse generating means is counted as the third counting value, and the second pulse train from the pulse generating means is counted as the fourth counting value. It has a counting means for counting as a count value and obtaining a count value in which the difference between the first count value and the second count value is corrected by the difference between the third count value and the fourth count value.

Effects and Effects According to the material testing machine according to the first, second, third, fourth, and fifth inventions of the present application, the material piece holding body, the indenter, the indenter pressing member, and the indenter pressing force detection means are provided. and an indenter penetration detection means as in the case of a conventional material testing machine, and the indenter is forced into the material piece by the indenter pressing member via the indenter pressing force transmission member. be able to.

In this case, the indenter pressing force transmission member is the elastic WIJ, and the elastic material is compressed when the indenter pressing member presses the indenter against the material piece. The amount of compression of the elastic material at this time is
It corresponds to the pressing force of the indenter against the piece of material. On the other hand, the displacement detector for detecting indenter pressing force of the indenter pressing force detection means detects the amount of compression of the elastic material, and outputs the detection output as an indenter pressing force detection output.

Therefore, according to the material testing machines according to the first, second, third, fourth, and fifth inventions of the present application, the hardness of a material piece can be measured by the indenter pressing force as in the case of conventional material testing machines. It can be measured using the indenter pressing force detection output from the detection means and the indenter penetration detection output from the indenter penetration detection means.

However, in the case of the material testing machines according to the first, second, third, fourth, and fifth inventions of the present application, the indenter pressing force detection means is a stator fixed to either the indenter or the indenter pressing member. and a movable element whose free end is in contact with the other of the indenter and the indenter pressing member. It has an extremely simple configuration that outputs an indenter pressing force detection output that detects the pressing force against a piece of material.

Therefore, in the case of the material testing machines according to the first, second, third, fourth, and fifth inventions, the material testing machines can be configured to be smaller and cheaper than conventional material testing machines. can.

Further, in the case of the material testing machine according to the second invention of the present application, the indenter penetration detection means is a displacement detector for detecting the amount of indentation penetration having a contactor that contacts the material piece from the surface thereof, a stator and a mover. The stator is fixed to one of the indenter and the contact, and the mover has its free end in contact with the other of the indenter and the contact.

Therefore, the indenter penetration detection output from the displacement detector for detecting the indenter penetration amount of the indenter penetration port detection means can be used to determine what kind of surface the material piece holding body has and what type of material is on the material piece holding body. so that a value that is independent of the conditions in which the piece of material is held can be obtained. Therefore, the indenter intrusion of the indenter intrusion detecting means can be measured by the indenter intrusion detection output from the detection displacement detector, and the amount of intrusion of the indenter into the material piece can be obtained as an accurate value.

Therefore, according to the material testing machine according to the second invention of the present application, it is possible to measure the hardness of a piece of material more accurately than in the case of a conventional material testing machine.

Furthermore, in the case of the material testing machine according to the third invention of the present application,
The indenter penetration detection means includes (a) a pulse generating means that generates a pulse train in accordance with the movement of the indenter pressing member when it moves to press the indenter, and (b) a pulse train from the pulse generating means that is transmitted to the indenter. and a counting means for counting the pressing force of the indenter against the material piece from the first value to the second value based on the output from the pressing force detection means,
From the counting means, when the indenter is pushed into the material piece to make an indentation on the material piece, the indenter enters the material piece when the pressing force of the indenter against the material piece takes a first value. Outputs an indenter penetration detection output representing the amount of indentation.

Therefore, in the case of the material testing machine according to the third invention of the present application,
The indenter penetration detection means can provide the indenter penetration detection output representing the amount of penetration described above with an extremely simple configuration.

Therefore, in the case of the material testing machine according to the third invention of the present application,
It is possible to measure the hardness of a piece of material using the indenter penetration detection output representing the amount of penetration described above with a simple configuration.

Further, in the case of the material testing machine according to the fourth invention of the present application, the indenter penetration detection means (a) when the indenter pressing member moves in the first direction to press the indenter, according to the movement, When the first pulse train is generated and the indenter pressing member moves in the first direction and then moves in a second direction opposite to the first direction, a second pulse train is generated in accordance with the movement. Based on the output from the pulse generating means for generating a pulse train and (b) the indenter pressing force detecting means, the first pulse train from the pulse generating means is determined so that the pressing force of the indenter against the material piece changes from the first value. Until the second value is reached, the second pulse train from the pulse generating means is counted as the first count value until the pressing force of the indenter against the material piece changes from the second value to the first value. Until then, it is counted as the second count value, and the first count value and the second count value are
and a counting means for obtaining a count value of the difference between the count value of The amount of penetration of the indenter into the material piece when the pressure takes the first value, and when the indenter is separated from the material piece after being pushed into the material piece and making an indentation on the material piece. An indenter intrusion interval detection output representing a difference between the amount of intrusion of the indenter into the material piece when the pressing force of the indenter against the material piece takes a first value is output.

Therefore, in the case of the material testing machine according to the fourth invention of the present application, the indenter penetration detection means can provide the indenter penetration detection output representing the above-mentioned penetration amount with an extremely simple configuration.

Therefore, in the case of the material testing machine according to the fourth invention of the present application,
It is possible to measure the hardness of a piece of material using the detection output between the indenter penetrations, which represents the difference in the amount of penetration described above, with a simple configuration.

Further, in the case of the material testing machine according to the fifth invention of the present application, the indenter penetration detection means is configured to detect (a) when the indenter pressing member moves in the first direction to press the indenter; , generates a first pulse train, and when the indenter pressing member moves in the first direction and then moves in a second direction opposite to the first direction, a second pulse train is generated in accordance with the movement. (b) a contact whose M end is in contact with either the indenter pressing member or the surface of the indenter and the material piece; (c) the indenter pressing member or an indenter, and a switch having first and second contacts provided on the other of the material pieces and the contactor, respectively, and (d) based on the output from the indenter pressing force detection means,
The first pulse train from the pulse generating means is counted as a first count value until the pressing force of the indenter against the material piece changes from the first value to the second value, and the pulse train from the pulse generating means The second pulse train is counted as a second count value until the pressing force of the indenter against the material piece reaches the first value from the second value, and while the switch is on, the pulse train The first pulse train from the pulse generating means is counted as a third counted value, the second pulse train from the pulse generating means is counted as a fourth counted value, and the first counted value and the second counted value are counting means for obtaining a count value, the difference of which is corrected by the difference between the third count value and the fourth count value; When making an indentation on a piece, the amount of penetration of the indenter into the material piece when the pressing force of the indenter against the material piece takes the first value, and the amount of penetration of the indenter into the material piece by pushing the indenter into the material piece and making an indentation on the material piece. Indenter penetration is the difference between the amount of penetration of the indenter into the material piece when the pressing force of the indenter against the material piece takes the first value when separating the indenter from the material piece. The gap detection output is output without including an error caused by the surface of the material piece being pressed by the indenter falling from the initial height when viewed from the material piece holding body.

Therefore, in the case of the material testing machine according to the fifth invention of the present application, the indenter penetration detection means, which has an extremely simple configuration, can detect the indenter penetration detection output representing the difference in the amount of penetration as described above.
can be obtained without including the above-mentioned errors.

Therefore, in the case of the material testing machine according to the fifth invention of the present application,
It is possible to measure the hardness of a piece of material using the indenter penetration detection output, which does not include the above-mentioned error and represents the difference in the penetration amount, with a simple configuration.

Next, a first embodiment of the material testing machine according to the present invention will be described with reference to FIGS. 1A-C1, 2, and 3A-K.

1A-1C and FIG. 2 show a material testing machine according to the present invention, which has the configuration described below.

That is, it has a table-shaped material piece holding body 3 having a flat surface 3a on which a flat material piece 1 having a flat surface 1a is placed and held.

This piece-holding body 3 is attached to the free end of the support screw 4 integrally with it, with the flat surface 3a lying in a plane orthogonal to the axis of the support screw 4. The support screw shaft 4 is screwed from above the base body 2 into a thread 5 which is provided in advance on the base body 2 from the upper surface thereof and extends in the vertical direction, and is fixed to the base body 2 by S[i6. ing.

Therefore, the material piece holding body 3 is held movably in the vertical direction with respect to the base body 2, with its surface 3a lying within a horizontal plane.

A support 11 is installed integrally with the base 2. At the free end of the column 11, a supporting arm 12 extending horizontally is provided integrally therewith. This support arm 12
At the free end of the indenter press shaft element 2, which will be described later, is integrally attached.
A guide axle 13 for guiding 5 is provided.

One free end surface of the guide shaft 13 is closed by an end plate 14 having a shaft hole 15, but the free end surface for use is open. The guide shaft 13 has its axis aligned with the axis of the support screw shaft 4, and the end plate 14 is connected to the material piece holding body 3.
It is provided at the free end of the support arm 12 so as to be located above the material piece holding body 3 while being located on the opposite side.

The guide shaft assembly 13 includes a screw shaft portion 17a having an outer diameter smaller than its inner diameter, and a disc-shaped shaft portion 17a having an outer diameter larger than the inner diameter of the shaft hole 15 provided in the end plate 14 of the guide shaft assembly 13. The flange 17b has an outer diameter approximately equal to the inner diameter of the shaft hole 15 of the end plate 14 of the guide shaft assembly 13, and has a key groove 1 on the outer periphery with a free end surface.
The drive shaft 17 has a configuration in which a drive wheel mounting shaft portion 17c having a drive wheel mounting portion 8 and a shaft portion 17d having a smaller outer diameter than the drive wheel mounting portion 17G are integrally arranged in that order. Its shaft portion 17d and drive wheel mounting shaft portion 17c
The flange 17t) is inserted into the shaft hole 15 provided in the end plate 14 of the guide shaft 13 from inside the guide shaft assembly 13.
The drive wheel 21 having the key 22 is placed on the drive wheel mounting shaft 17C, and the key 22 is inserted into the drive wheel mounting shaft 17C.
7c in the key groove 18, and then the shaft portion 17
By screwing the main screw 23 into the screw shaft portion 17a
is provided in the guide shaft 13 in such a manner that it is not substantially movable in the axial direction thereof, but is rotatable in the guiding shaft 13 in an extended state coincident with its axis.

A drive shaft 17 rotatably extending within the guide shaft assembly 13
, an indenter guide shaft end portion 25a having a guide groove 26 extending in the axial direction formed on the outer circumferential surface and having an inner diameter smaller than the inner diameter of the above-mentioned guide shaft joint 13; A slit that has an inner diameter larger than the portion 25a and has an outer diameter that is approximately equal to the inner diameter of the guide @ sleeve 13 described above, and communicates with the inside on the indenter guide shaft end portion 25a side and extends in the axial direction. 27 are arranged integrally, and the indenter guide shaft end portion 25 of the clear sound portion 25b
An indenter pressing shaft element 25 having a structure in which the side opposite to the a side is closed by an end plate part 28 having a lead screw 29 has the threaded shaft part 17a of the drive shaft 17 screwed into the lead thread 29,
By extending the screw shaft portion 17a into the clearing portion 25b, it is guided by it from within the guiding shaft 13 and extends outside the guiding clear sound 13 toward the side of the material piece holding body 3. It is provided so as to be able to move forward and backward with respect to the material piece holding body 3.

In this case, the indenter guiding shaft end portion 30 of the indenter pressing shaft element 25
is provided with an annular guide groove 26 from its outer circumferential surface, and an enclosing plate-shaped spring receiver having an outer diameter larger than the indenter guiding shaft end portion 30 on the end plate portion 28 side of the guide groove 26. A portion 31 is integrally provided. The above-mentioned indenter pressing shaft element 25 has a pointed end 33 and the indenter pressing shaft element 25 has a pointed end 33.
The shaft portion 32a has an outer diameter approximately equal to the inner diameter of the indenter guiding shaft end portion 25a of No.
The indenter 32, which has a disk-shaped pressure receiving part 32b having an outer diameter larger than a, loosely inserts its shaft part 32a into the indenter guiding shaft sound part 25a of the indenter pressing shaft element 25, and presses. The receiving part 32b is connected to the indenter guiding shaft end part 25a and the sound part 25b.
By being received by the step surface 30 between them, the tip 33 protrudes and extends outside the indenter guiding shaft end portion 25a of the indenter pressing shaft element 25 toward the material piece holding body 3 side. It is provided so that it can move forward and backward with respect to 3.

In addition, in the indenter guiding axial sound part 25b of the indenter pressing axial element 25, there is provided an integrally formed part facing parallel to the pressing receiving surface 34 of the indenter 32 so as to interrupt the inside of the indenter pressing axial sound part 25b. A pressing part 35 is provided which has a flat pressing surface 36 that is flat.

Furthermore, a pressure receiving surface 34 of the pressure receiving portion 32b of the indenter 32,
A winding strip 41 is interposed between the indenter pressing shaft assembly 25 and the pressing surface 36 of the pressing portion 35 .

Further, a switch mounting piece 47 is provided on the indenter pressing shaft metal portion 25b of the indenter pressing shaft fitting 25 described above and integrally extends outward in the width direction.
A stop switch 48 having a movable contact 48a is mounted on the top, and on the other hand, the guide shafts 13 are connected to the
Four switch receiving pieces are attached to receive the movable contacts 48a of the knob switch 48.

In this case, when the indenter pressing @ sleeve 25 rises from a lowered state in which its end plate 28 is not in contact with the flange 17b of the drive shaft, and the end plate 28 comes into contact with the flange 17b. Then, the above-mentioned switch mounting piece 4 is installed so that the stop switch 48 is operated from off to on or vice versa.
7 is provided on the indenter pressing shaft metal portion 25b, and the above-mentioned switch receiving piece 49 is provided on the guide shaft fitting 13.

On the other hand, a motor 43 to which a drive wheel 44 is attached is attached to the above-mentioned pillar 11, and the drive wheel 44 and
The drive shaft 21 attached to the drive shaft 17 described above,
They are connected by a belt 45.

According to the configuration described above, the motor 43 is not driven,
Therefore, when the drive shaft 17 is not rotated, as shown in FIG.
8 is brought into contact with the flange 17b of the drive shaft 17, and the indenter 3
2 receives the pressure receiving part 32b on the step surface 30 between the indenter guiding sleeve part 25a of the indenter pressing shaft joint 25a and the joint shaft joint part 25b, and in this state, the tip 33
Projects from the end surface of the indenter guiding shaft element part 25a of the indenter pressing shaft assembly 25 on the side opposite to the clearing part 25b side to the material piece holding body 3 side, maintaining a sufficient distance from it. It is possible to bring the situation to a certain state.

In addition, in such a state, the surface 3a of the material piece holding body 3
On top, a piece of material 1 can be held.

Furthermore, if the motor 43 is driven in normal rotation from such a state, the drive shaft 17 is rotated in the normal direction via the drive wheel 44 - belt 45 - drive wheel 21, and accordingly, the shaft alignment for indenter pressing is adjusted. 25 is moved downwardly toward the material piece holding body 3 together with the indenter 32, and as shown in FIG. 1B, the tip 33 of the indenter 32 is held on the material piece holding body 3. It can be brought into contact with the surface 1a of the piece of material 1 that is being held.

Furthermore, if the motor 43 continues to rotate in the forward direction even after the tip 33 of the indenter 32 contacts the surface 1a of the material piece 1 as described above, the indenter 32 will rotate as shown in FIG. 1C. The pressing shaft 25 can be moved downwardly toward the piece of material 1 . In this case, the winding strip 41 is compressed. For this reason,
The indenter pressing axis 25 is such that the tip 33 of the indenter 32 is aligned with the material piece 1.
From the time when the indenter 32 comes into contact with the surface 1a of the winding strip 4,
1 so that the tip 33 of the indenter 32 can be forced into the piece of material 1 and make an indentation 51 in the piece of material 1 .

Furthermore, after making the indentation 51 on the material piece 1 in this manner, the motor 43 is temporarily stopped, and then the motor 43 is driven in the reverse direction to reverse the drive shaft 17, and accordingly,
The indenter pressing shaft 25 is moved upward together with the indenter 32, and the tip 33 of the indenter 32 is moved between the material piece 1 and the indentation 5.
1 and then separate the end plate portion 28 of the indenter pressing shaft assembly 25 from the flange portion 1 of the drive shaft 17.
7b, and at this time the stop switch 48 can be activated. Further, if the stop switch 48 is activated in this way, a signal representing this can be obtained from the stop switch 48 as a stop signal S48, and the stop signal S48 can be used to control the motor. 43 can be stopped automatically.

As is clear from the above, the above-mentioned indenter pressing shaft element 25 constitutes an indenter pressing member that presses the indenter 32 so that it presses into the material piece 1, and the above-mentioned winding strip 41 constitutes an indenter pressing force transmitting member which is made of elastic material and is inserted between the indenter pressing member and the indenter 32 (above).

The indenter pressing shaft element 25 as the indenter pressing member described above is provided with a displacement detector 61 for detecting an indenter pressing force.

This displacement detector 61 for detecting indenter pressing force is, for example,
An air-core electromagnetic transformer 61a composed of a winding wire, a magnetic piece 61b movable in the axial direction within the air core, and a magnetic piece 61b extending integrally with the magnetic piece 61b in the axial direction and having a free end surface as an engaging surface 62. The electromagnetic transformer 61a is fixedly disposed within the shaft hole 37 provided in advance in the pressing portion 35 of the indenter pressing shaft element 25, and the engaging surface of the engaging member 61c 62 in contact with the pressure receiving surface 34 of the pressure receiving part 32b of the indenter 32, press the indenter pressing shaft element 25.
It is set in.

The electromagnetic transformer 6 of the displacement detector 61 for detecting the indenter pressing force
1a constitutes a stator of the displacement detector 61 for detecting indenter pressing force, and the magnetic piece 61b and the engaging element 61C constitute a movable element of the displacement detector 61 for detecting indenter pressing force.

Displacement detector 61 for detecting indenter pressing force having the above-described configuration
In this case, the magnetic piece 61b constituting the mover is moved until the indenter pressing member 25 brings the tip 33 of the indenter 32 into contact with the surface 1a of the material piece 1, as described above, and then , the winding strip 41 is compressed, and the tip 33 of the indenter 32 is compressed.
As the indenter 32 is moved so as to be pushed into the material piece 1, the pressure receiving part 32b of the indenter 32 changes the position in the air core of the electromagnetic transformer 61a constituting the stator, so that the pressure receiving part 32b of the indenter 32 moves the position of the indenter pressing shaft element 25. The state in which the tip 33 of the indenter 32 is supported by the stepped surface 30 between the shaft joints 25a and 25b.
From the reference position shown in FIG. 1A, where the indenter 3 is not in contact with the surface 1a of the material piece 1, as shown in FIG.
Move to the opposite side from the 2nd side. At this time, the winding strip 41, which is made of a resilient material and serves as an indenter pressing force transmission member, is compressed as described above.

Therefore, from the electromagnetic transformer 61a serving as the stator of the displacement detector 61 for detecting the indenter pressing force, it is possible to obtain an output representing the amount of compression of the winding spring 41, which is made of elastic material and serves as an indenter pressing force transmitting member. . Incidentally, the amount of compression of the winding strip 41 corresponds to the pressing force with which the indenter 32 presses the piece of material 1. Therefore, the indenter pressing force detection output 861 representing the pressing force with which the indenter 32 presses the material piece 1 can be obtained from the displacement detector 61 for detecting the indenter pressing force.

As is clear from the above, the displacement detector 61 for detecting the indenter pressing force detects the indenter pressing force with which the indenter 32 presses the material piece 1 held on the material piece holding body 3. It constitutes pressure detection means.

Further, a contactor 71 is provided on the indenter pressing shaft element 25 as the pressing member described above.

This contactor 71 has an axial joint portion 71 having an inner diameter approximately equal to the outer diameter of the indenter guiding axial sound portion 25a of the indenter pressing axial element 25.
a, and a thickness that extends inward in the radial direction from the upper inner surface of the shaft joint portion 71a by a length that is approximately equal to the depth of the guide groove 26 of the indenter guiding shaft sound portion 25a, and that is sufficiently smaller than the length of the guide groove 26. An annular engaging portion 72b having a diameter extends integrally with the lower end of the shafting portion 71a in a conical ring shape inwardly and downwardly, and has a free end surface with an inner diameter larger than the outside diameter of the shaft portion 32a of the indenter 32. The indenter pressing shaft element 25 has a contact portion 71c as a contact portion 72 having a It is provided on the indenter guiding axial sound part 25a.

In this case, between the upper end surface of the axial joint part 71a of the contactor 71 and the thin plate-shaped spring receiving part 31 provided on the indenter guiding axial sound part 25a of the indenter pressing axial element 25, the above-mentioned winding spring A winding strip 74 that is sufficiently weaker than 41 is inserted, and the indenter 32
In the above-mentioned first embodiment, the tip 33 of the
In the state shown in Figure A, the contact 71 is
The engaging portion 71b is inserted into the guide groove 2 of the indenter guiding shaft metal portion 25a.
6, and in this state, the contact surface 72 of the contact portion 71c is pressed against the contact surface 72 of the indenter 32 so that the pressing portion 32b of the indenter 32 is received by the indenter guiding @metal portion 25a of the indenter pressing shaft 25 and the clearing portion 2.
The tip 33 of the indenter 32 is placed on a plane slightly below the free end of the tip 33 when it is engaged with the stepped surface 30 between the indenters 32 and 6.

Further, in addition to the displacement detector 61 for detecting indenter pressing force described above, a displacement detector 81 for detecting indenter penetration having a similar configuration is provided.

This displacement detector 81 for detecting indenter penetration is, for example,
Similar to the displacement detector 61 for detecting the indenter pressing force described above, an air-core electromagnetic transformer 81a composed of a winding, a magnetic piece 81b movable in the axial direction within the air core, and a magnetic piece 81b. It has a rod-shaped engager 81c that extends integrally in the axial direction and has a free end surface as an engagement surface 82,
The electromagnetic transformer 81a is integrated with the pressure receiving part 32b of the indenter 32 by extending outwardly in the width direction through the slit 27 of the indenter guiding shaft metal part 25b of the indenter pressing sound 25. The engaging surface 82 of the engaging element 81c is fixedly disposed on the piece 39, and the engaging surface 82 of the engaging element 81c is connected to the receiving piece 75 which is provided in advance and extends outward in the width direction integrally with the transparent part 71a of the contact element 71. It is brought into contact with the upper surface 76.

The electromagnetic transformer 8 of the displacement detector 81 for detecting the indenter penetration
1a constitutes a stator of the displacement detector 81 for detecting indenter penetration, and the magnetic piece 81b and engagement element 81c constitute a movable element of the displacement detector 81 for detecting indenter penetration.

In the case of the contactor 71 having the above-described configuration, the contactor 71 has the structure shown in FIG. When the tip 33 of the indenter 32 is brought into contact with the surface 1a of the material piece 1 from the state shown in A, and then moved so as to compress the winding strip 41 and push the tip 33 of the indenter 32 into the material piece 1, the movement Accordingly, the contact surface 72 of the contact portion 71C
moves towards the piece of material 1 such that it comes into contact with the piece of material 1. However, in this case, the contact 71 has a contact portion 72 of its contact portion 71c, and a point 33 of the indenter 32 is connected to the material piece.
As shown in FIG. 1, the tip of the indenter 32 contacts the surface 1a of the material piece 1 immediately before contacting the surface 1a of the material piece 1, as shown in FIG. 33 contacts the surface 1a of the piece of material 1 and then presses into the piece of material 1, it does not move substantially because the winding strip 74, which has only a weak force, is compressed. Therefore, the contact 71 is
The contact surface 72 of the contact portion 71c is the surface 1a of the material piece 1
Even if the surface 1a of the material piece 1 is pressed by the contact surface 72 through the winding strip 74, as shown in FIGS.
has only a weak force, so the contact portion 7 of the contactor 71
The contact surface 72 of 1G presses the surface 1a of the material piece 1 with only a weak force, and therefore, the contact surface 72 of the contact portion 71C is substantially different from the case where the surface 1a of the material piece 1 is not pressed by it. It is kept at the same height position.

After the contact surface 72 of the contactor 71 contacts the surface 1a of the material piece 1, the tip 33 of the indenter 32 contacts the material piece 1.
Even if it comes into contact with the surface 1a of the indenter and then moves to push it into the material piece 1, it does not substantially move. The piece 81b moves the stator as the contact surface 72 of the contactor 71 comes into contact with the surface 1a of the material piece 1 and moves so that the tip 33 of the indenter 32 presses into the material piece 1. The position of the electromagnetic transformer 81a in the air core is changed from the position shown in FIG. The contact portion 72 and the tip 33 of the indenter 32 are connected to the surface 1 of the material piece 1.
It moves to the side opposite to the material piece 1 side as shown in FIG. 1C, after passing through the reference position where it moved to the side opposite to the material piece 1 side shown in FIG.

In this case, the magnetic piece 8 of the displacement detector 81 for detecting the indenter penetration
1b is in the air core of the electromagnetic transformer 81a, from the position when the contact surface 72 of the contactor 71 contacts the surface 1a of the material piece 1, the contact surface 72 of the contactor 71 and the tip 33 of the indenter 32 are connected to the material piece 1. The movement m to the reference position shown in FIG. 1B when it contacts the surface 1a is a predetermined fixed amount.

Therefore, an output representing the amount of movement of the tip 33 of the indenter 32 to be pushed into the material piece 1 can be obtained from the electromagnetic transformer 81a as a stator of the displacement detector 81 for detecting indenter penetration. Can be done. Incidentally, this amount of movement corresponds to the indenter penetration period during which the tip 33 of the indenter 32 presses into the material piece 1. Therefore, the indenter penetration detection output 881 representing the amount of penetration of the indenter 32 into the material piece 1 can be obtained from the displacement detector 81 for detecting the indenter penetration.

As is clear from the above, the above-mentioned contactor 7
1 and the displacement detector 81 for detecting the amount of indenter penetration constitute an indenter penetration detection means for detecting the amount of penetration of the indenter 32 into the material piece 1 .

Further, as shown in FIG. 2, an indenter representing the pressing force with which the indenter 32 presses the piece of material 1 is obtained from the displacement detector 61 for detecting the indenter pressing force which constitutes the above-mentioned pressing force detection means. A pressing force detection output 861 and a displacement detector 81 for detecting indenter penetration, which constitutes the above-mentioned indenter penetration detection means.
a processing circuit 91 to which is supplied an indenter penetration detection output S81 which is obtained from and represents the amount of penetration of the indenter 32 into the material piece 1; and a display 92 which displays a processing output 891 from the processing circuit 91. , a motor drive circuit 93 that drives the motor 43 described above, a control circuit 94 that controls the processing circuit 91 and the motor drive circuit 93, and a start switch 9.
5.

An example of the processing circuit 91 includes two first and second comparison circuits 101 and 102.

The first comparison circuit 101 receives an indenter pressing force detection output 861 obtained from the displacement detector 61 for detecting the indenter pressing force at one input terminal a, and a first pressing force setting circuit 103 at the other input terminal. receives a pressing force setting output 5103 representing the pressing force with which the indenter 32 presses the material piece 1 as a first value v1, and receives an indenter pressing force detection output 36 from the output end C.
1 is obtained by the value v1 of the pressing force setting output 5103,
Outputs pulse P101.

Further, the second comparison circuit 102 receives the indenter pressing force detection output 861 at one input terminal a, and receives the indenter pressing force detection output 861 at the other input terminal a.
Receives a pressing force setting output 8104 representing the pressing force with which the indenter 32 presses the material piece 1 as a second value V2 from the second pressing force setting circuit 104, and detects the indenter pressing force from the output terminal C. When the output S61 is obtained at the value of the pressing force setting output 5104, a pulse P102 is output.

Furthermore, the processing circuit 91 includes a latch circuit 105. This latch circuit 105 is connected to the displacement detector 8 for detecting the indenter penetration.
Receive the indenter intrusion m detection output S81 from 1 at the input terminal a,
By receiving the pulse P101 obtained from the output terminal C of the first comparator circuit 101 at the control terminal d, from the output terminal C,
An indenter penetration detection output 5105 having the contents of the indentation penetration detection output 881 at the time when the pulse P101 is obtained is output.

Further, the processing circuit 91 includes an arithmetic circuit 106. This arithmetic circuit 106 connects an input terminal a to an output terminal C of the latch circuit 105, and receives a control signal 894B from the control circuit 94.
The first pulse of the pulse P101 obtained from the first comparator circuit 101 (this is controlled by the pulse P10
1A) is obtained, the indenter penetration detection output 3105 obtained from the latch circuit 105 (this is referred to as the indentation penetration detection output 5105A) and the first comparison circuit 10
When the next pulse (this is referred to as pulse P101B) after the pulse P101 obtained from 1 is obtained, the indenter penetration detection output 5105 obtained from the latch circuit 105 (this is referred to as the indenter penetration amount detection output 3105B) is Perform a calculation to calculate the difference, and from the output kA C, calculate the calculation output 8106
is the processing output S91 of the processing circuit 91, and the display 92
Output to.

The display 92 displays the processing output S9 obtained from the processing circuit 91.
Display the contents of 1.

The control circuit 94 receives a start signal S95 obtained from the start switch 95 when it is activated;
Upon receiving the stop signal 848 from the start switch 48 mentioned above and the pulse P102 obtained from the second comparison circuit 102 of the processing circuit 91, the motor drive circuit 93 is controlled as follows.

That is, now the start signal S59, the pulse P10
2 and the stop signal 848 are obtained in that order, the control signal 594A controls the motor drive circuit 93, and the motor drive signal S93 obtained from the control signal 594A controls the motor 43 before the start signal S59 is obtained 1q. Furthermore, the motor 43 is controlled to rotate normally from the time when the start signal S59 is obtained to the time when the pulse P102 is obtained. After a certain period of time has elapsed, the stop signal S48 becomes 1q.
The motor 4 is controlled to rotate in reverse until the point where the
3 is controlled so that it stops after the stop signal 848 is obtained.

Note that the control circuit 94 controls the arithmetic circuit 10 of the processing circuit 91 by the control signal 894B from the control circuit 94, as described above.
6 is then controlled so that the arithmetic output 5106 as the above-mentioned processing circuit S91 is obtained.

The above is the configuration of the first embodiment of the material testing machine according to the present invention.

According to the material testing machine according to the present invention having such a configuration, the following operations can be obtained with reference to FIGS. 3A to 3K.

That is, the start switch 9 shown in FIG.
5 is activated at time point 10.

When this happens, switch from the start switch 95 to the third
As shown in Figure A, at time 10, the starting signal 895
is obtained and supplied to the control circuit 94.

Therefore, the control circuit 94 receives the control signal 594 from the control circuit 94.
A controls the motor drive circuit 93 so that the motor 43 rotates in the normal direction according to the motor drive signal 393 from the motor drive circuit 93, so that the motor 43, which was in a stopped state before time tQ, is
However, as shown in FIG. 3B, normal rotation starts from time point 10, and accordingly, the height H before time point to is equal to the reference value.

As shown in FIG. 3C, the indenter pressing shaft element 25 that has been taken starts to descend at a constant speed from time point 10, so that the height 1 of the indenter pressing shaft element 25 changes from time point to. Takes a value that decreases at a constant rate. In this case, the height H of the indenter pressing shaft element 25 represents the height of the upper surface of the end plate portion 28 of the indenter pressing shaft element 25, for example, taken from the surface 3a of the material piece holding body 3, and its reference The value ho is the value when the end plate portion 28 of the indenter pressing shaft element 25 is in contact with the flange portion 17b of the drive shaft 17, as shown in FIG. 1A.

Since the indenter pressing shaft element 25 descends as described above,
Accordingly, the indenter 32, which had set the height F before time 10 to the reference value f○, changes from time 10 as shown in the third diagram.
It starts descending at the same speed as the indenter pressing shaft element 25, and therefore, the height F of the indenter 32 takes a value that decreases from time 10 at the same speed as the indenter pressing shaft element 25. In this case, indenter 3
For example, the height F of the indenter 32 is taken from the surface 3a of the material piece holding body 3 in the same way as the height H of the indenter pressing shaft element 25.
represents the height of the free end of the tip 33 of
This is the value when the pressure receiving portion 32b of the indenter 32 is in contact with the step receiving surface 30 of the indenter pressing shaft element 25.

When the indenter 32 is lowered as described above, the tip 33 of the indenter 32 comes into contact with the surface 1a of the material piece 1 from time t3 after time 10, as shown in FIG. 1B. At the time t3 when the tip 33 of the indenter 32 contacts the surface 1a of the material piece 1, the height F of the indenter 32 takes the value f1. This value f1 is the material piece 1
represents the thickness of

The indenter pressing shaft alignment 25 is such that the tip end 33 of the indenter 32 is at the time t3.
Even if it comes into contact with the surface 1a of the material piece 1, it continues to descend after the time t3 in the same way as before the time t3. Therefore, the indenter pressing axis 25 pushes the indenter 32 through the winding strip 41.
The tip 33 of the indenter 32 is pushed into the material piece 1 from time t3 by pressing toward the material piece 1. At this time,
Since the indenter pressing shaft 25 compresses the winding strip 41, even after time t3, as shown in FIG. 3C, it descends at the same speed as before time t3. As shown in Figure 3, it descends at a slower speed than before time t3.

The indenter pressing shaft alignment 25 and the indenter 32 are in this manner at time 10.
3, the compression amount G of the winding strip 41 is as shown in Fig. 3E.
As shown in FIG. 3, from time point 10 to time point t3, a reference value go, which is a value of zero, for example, is taken, but from time point t3, a value that increases with time is taken. In this case, the increasing speed of the compression ff1G of the reverse spring 41 is determined by the decreasing speed of the height H of the indenter pressing axis 25 shown in FIG. This corresponds to the difference in the rate of decrease in the value of height F.

In this way, the value of the compression ff1G of the winding strip 41 at the time t
3, when increasing, the pressure receiving part 34 of the pressure receiving part 32b of the indenter 32 increases from time t3 at the same speed as the compression ff1G of the winding strip 41 increases with respect to the indenter pressing axis alignment 25, Rise.

Therefore, the indenter 3 of the displacement detector 61 for detecting the indenter pressing force
At time t3, the magnetic piece 61b attached to the engager 61c engaged with the pressure receiving surface 34 of the pressure receiving part 32b of No. 2
Therefore, in the air core of the electromagnetic transformer 61a, it rises from the reference position at the same speed as the value of the compression 11G of the winding strip 41 increases.

Therefore, as shown in FIG. 3F, the indenter pressing force detection output S61 from the electromagnetic transformer 61a of the displacement detector 61 for detecting the indenter pressing force is, for example, a reference value V which is a zero value before time t3. , and the magnetic piece 6 increases over time from time t3.
It is obtained by taking a value that increases at a rate corresponding to the rate of increase of the compression amount G of the winding strip 41.

On the other hand, if the indenter pressing axis 25 and the indenter 32 start descending from time 10 as described above in FIG. However, as shown in FIG. 3G, from time point 10, the indenter pressing axis 25 and the indenter 32 start to descend at the same speed.

In this case, the height K of the contactor 71 is equal to the height K of the indenter pressing axis 25
Similarly to the height H of the indenter 32 and the height F of the indenter 32, it represents the height of the upper surface 76 of the receiving piece 75 provided on the contactor 71, for example, taken from the surface 3a of the material piece holding body 3, and its reference value kO is the value when the engaging portion 71b of the contactor 71 is in contact with the lower end surface 38 of the guide groove 26 provided in the indenter guiding shaft metal portion 25a of the indenter pressing shaft 25.

If the contact 71 descends from time 10 as described above, and therefore the value of the height K of the contact 71 decreases with time from time to, then its contact surface 72 will be on the surface 1a of the piece of material 1. , the tip 33 of the indenter 32 contacts the surface 1a of the piece of material 1 from time t2, which is earlier than time t3. The indenter pressing axis 25 and the indenter 32 are connected to the contact surface 7 of the contactor 71.
2 contacts the surface 1a of the piece of material 1 from time t2, as described above in FIGS.
After time t2, it continues to descend as before time t2. Therefore, the indenter pressing shaft 25 presses the contact 71 toward the material piece 1 via the winding strip 74 from time t2.

However, the force of the winding strip 74 is sufficiently small that the contact 71 is not substantially pushed into the piece of material 1 and therefore
After time t2, the height K of the contactor 71 maintains the value 1 at time t2.

In this way, the height of the contactor 71 changes from time t2 to (
On the other hand, the height F of the indenter 32 takes a value that decreases with time even after time t2, so from time t2,
The magnetic piece 81b attached to the engaging element 81c that engages with the upper surface 76 of the receiving piece 75 provided on the contactor 71 of the displacement detector 81 for detecting the indenter penetration is connected to the press receiving part 3 of the indenter 32.
The speed at which the height F of the indenter 32 decreases from a position lower than the reference position in the air core of the electromagnetic transformer 81a provided in three support pieces extending outward in the width direction from 2b At the same speed, it passes through the reference position in the air core of the electromagnetic transformer 81a and rises above the reference position.

Therefore, as shown in FIG. 3H, the indenter penetration detection output 881 from the electromagnetic transformer 81a of the indenter penetration detection displacement detector 81 reaches the reference value m, which is, for example, 1 value, before time t2. It is obtained by taking a value m1' that is higher than the value m1', and from time t2, taking a value that decreases with time at a speed corresponding to the upper limit speed of the magnetic piece 81b.

From the above, the value of the indenter pressing force detection output S61 obtained from the displacement detector 61h for detecting the indenter pressing force is as shown in FIG. 3 F1. :
As shown in FIG. 3H, the value of the indenter penetration detection output $81 increases with time from time t3, and the value of the indenter penetration detection output $81 obtained from the indenter penetration detection displacement detector 81 increases from time t2 as shown in FIG. Although it is clear that the value of the indenter pressing force detection output S61 decreases with time, the value of the indenter pressing force detection output S61 matches the value V1 of the pressing force setting signal 5103 obtained from the pressing force setting circuit 103 shown in FIG. 2 at time t4. For example, a pulse P101A is obtained from the comparator circuit 101 as the first pulse of the pulses P101 at time t4, as shown in FIG.
05. Therefore, from the latch circuit 105 to which the indenter penetration detection output 881 obtained from the indenter penetration detection displacement detector 81 is supplied, the indenter penetration detection output 5105A is outputted from the indenter penetration detection output 5105 at time t4. As the first output, the indenter penetration detection output 88
1 at time t4, which is obtained by the arithmetic circuit 10.
6.

Further, the value of the indenter pressing force detection output S61 obtained from the displacement detector 61 for detecting the indenter pressing force is at the time t6 after the time t4.
If the value 2 of the pressing force setting signal 5104 obtained from the pressing force setting circuit 104 shown in FIG. 2 matches the value 2 of the pressing force setting signal 5104 shown in FIG. is obtained, and it is the control circuit 9
4.

Therefore, the control circuit 94 uses the control signal 594A to cause the motor drive circuit 93 to stop the motor 43 from the time t6 using the drive signal S93, and then starts reversing the motor 43 from the time ta after a certain period of time has passed from the time t6. Control to start.

Therefore, the motor 43 is activated at time t, as shown in FIG. 3B.
6 to time t7, and starts reversing from time t7, and in response to this, the indenter pressing shaft 25 is lowered from time t6 to that point, as shown in FIG. 3C. is stopped and this state is maintained until time t7, so that the height H of the indenter pressing axle 25 maintains the value h1 at time t6 from time t6 to time t7. Then, the indenter pressing axle 25 starts rising from time t7 at the same speed as the descending speed from time to to time t6.

In addition, the indenter pressing axle 25 stops descending from time t6 and maintains this state until time t7, so that the indenter 32 correspondingly moves as shown in the third diagram at time t.
6, the descent up to that point is stopped and the state is changed to time t7.
Therefore, the height F of the indenter 32 maintains the value f3 at time t6 from time t6 to time t7, and
As shown in FIG. 3E, the compression amount G of the winding spring 41 remains at 1 (J2) at time t6 from time t6 to time t7.

However, since the indenter pressing axle 25 rises from time t7, the value of compression ff1G of the winding strip 41 changes from time t7.
Therefore, as time passes, it decreases from the value g2 at time t6.

Furthermore, if the material piece 1 has substantially no elastic restoring force, the indenter 32 will not receive any pushing up force from the material piece 1, so even if the value of the compression ff1G of the winding strip 41 decreases from time t7. , does not substantially increase from time t7. however,
The piece of material 1 generally has an elastic restoring force. Therefore, since the indenter 32 receives a pushing force from the material piece 1, as the value of the compression amount G of the winding strip 41 decreases from time t7, as shown in the third diagram, from time t7, It rises to the point in time t9 when it no longer receives the push-up force from the material piece 1, and therefore,
The height F of the indenter 32 changes from the time t7 to the value f at the time t6.
It rises from 3.

Therefore, the value of the compression ff1G of the winding strip 41 decreases at a slower speed than the rising speed of the indenter pressing shaft element 25 from time t7 to time t9.

As described above, the indenter 32 rises from time t7 to time t9, and the value of the compression amount G of the winding strip 41 is set to the value for pressing the indenter from time t7 to time t9, as described above. Although the indenter 32 decreases at a slower speed than the shaft element 25, since the indenter 32 does not receive the upward force from the material piece 1 from the time t9, the indenter pressing shaft element 25 remains the same after the time t9 as before the time t9. , it does not rise even if the height F of the indenter 32
, maintains the value f2 at time t9 from time t9. Therefore, the value of the compression ff1G of the winding thread 41 changes from time t9 to
At the same speed as the rising speed of the indenter pressing shaft element 25, at time t9
It decreases from the value q1 at .

As mentioned above, the value of the compression amount G of the winding spring 41 is determined at the time t.
6 to time t7, maintain the value g2 at time t6,
Further, from time t7 to time t9, the indenter pressure decreases at a slower speed than the rising speed of the indenter pressing shaft element 25, and from time t9 it decreases at the same value as the rising speed of the indenter pressing shaft element 25. The engaging element 61G of the pressure detection displacement detector 61 is engaged with the pressure receiving surface 34 of the pressure receiving part 32b of the indenter 32.
The magnetic piece 61b attached to the electromagnetic transformer 61
In the air center of a, from time t6 to time t7,
Although the position at time t6 is maintained, from time t7 to after time t9, the compression amount G of the winding strip 41 is lower than the position at time t6.
increases at the same rate as it decreases.

Therefore, as shown in FIG. Take the value V2, and from time t7, time t
911 is also obtained by taking a value that decreases over time at a rate corresponding to the rate of rise of the magnetic piece 61b, and thus the rate of decrease in the amount of compression G of the winding strip 41.

On the other hand, the height F of the indenter 32 is, as described above, at time t6.
From time t7 to time t7, the value f3 is maintained at time t6, and from time t7 to time t9, it takes a value that increases with time, and from time t9 to time t9, it takes the value f2, but the height of the contactor 71 K is also from time t2 to time t9m, and from time t
Since the value of 2 is set to 1, the upper surface 76 of the receiving piece 75 provided on the contactor 71 of the displacement detector 81 for detecting the indenter penetration
The magnetic piece 81b attached to the engaging element 81C engaged with the electromagnetic transformer 8 is attached to the support piece 39 extending in the radial direction from the suppression receiving part 32b of the indenter 32.
In the air center of 1a, the position at time t6 is maintained from time t6 to time t7, and the height F of the indenter 32 is changed from the position from time t6 to time t7 from time t7 to time t9. decreases at the same rate as the value increases,
From time t9, the position at time t9 is maintained.

Therefore, as shown in FIG. 3H, the indenter penetration detection output S81 from the electromagnetic transformer 81a of the displacement detector 81 for detecting the indentation penetration is the value m3 at time t6 from time t6 to time t7. From time t7 to time t9, the value increases with time at a speed corresponding to the descending speed of the magnetic piece 81b, and from time t9, the value m2 at time t9 is obtained.

From the above, as shown in FIG. 3F, the value of the indenter pressing force detection output S61 obtained from the displacement detector 61 for detecting the indenter pressing force changes over time from time t7 to the value at time t6.
2, and a displacement detector 81 for detecting the indenter penetration.
The value of the indenter penetration amount detection output S81 obtained from
7 to time t9, the value m3 at time t6 increases with time, and from time t9, the value m2 at time t9 increases.
However, the indenter pressing force detection output S
61 is the pressing force setting output 5103 obtained from the pressing force setting circuit 103 shown in FIG. 1, the comparator circuit 101 obtains a pulse P101B as the next pulse after the pulse P101 at time t10, as shown in FIG.
05.

Therefore, from the latch circuit 105 to which the indenter penetration detection output 881 obtained from the indenter penetration detection displacement detector 81 is supplied, the indenter penetration detection output 8105B becomes the indenter penetration detection output $105 at time t10. As the next output, the indenter penetration is obtained as the value at time t10 of the detection output 881, which is supplied to the arithmetic circuit 106.

Therefore, since the arithmetic circuit 106 was supplied with the indenter penetration ω detection output 5105A having the value of the indenter penetration detection output S81 at the time t4 at time t4, the indenter penetration detection output 5105A and now, Arithmetic circuit 106
After time t10, the difference between the indenter penetration detection output S81 and the indentation detection output 8105B having the value at time tlO is calculated.
106 is output to the display 92 as the processing output S91 of the processing circuit 91.

Therefore, the display 92 displays the processing output S91 of the processing circuit 91.
Display the contents of.

Further, the indenter pressing axis 25 continues to rise after the time t9 as well as before the time t9, but the indenter 32 continues to rise as described above.
Since it does not rise from time t9, the pressure receiving portion 32b of the indenter 32 is received by the step receiving surface 30 of the indenter pressing shaft 25 from time t and 11 after the above-described time tlo.

Therefore, the value of the compression 11G of the winding thread 41 at time t11
Then, the indenter 32 returns to the reference value QO before the above-mentioned time t3, and from the time t11, the indenter 32 rises at the same speed as its rising speed as the indenter pressing axis 25 is aligned.

Furthermore, since the value of the compression IG of the winding strip 41 returns to the reference value 90 from time t11, the value of the indenter pressing force detection output S61 obtained from the compression amount pressing force detection displacement detector 61 changes from time tll to Reference value V. to return to.

Furthermore, since the indenter 32 rises from time t11, the engaging element 71b of the contactor 71 starts to rise from time t12 after time tll.
is received by the lower end surface 38 of the guide groove 26 of the indenter pressing shaft 25, and therefore, from the position where the contact 71 has been in contact with the surface 1a of the material piece 1 with its contact surface 72 from time t12, It rises at the same speed as the rising speed of the indenter 32.

Furthermore, since the indenter 32 rises from time t11, and the contactor 71 rises from time t12 at the same speed as the rising speed of the indenter 32, the magnetic piece 81b of the displacement detector 81 for detecting the indenter penetration In the air center of 81a,
From time t11 to time t12, it descends at the same speed as the rising speed of the indenter 32, and stops descending from time t12, so that the indenter penetration detection output S81 obtained from the displacement detector 81 for detecting indenter penetration The value m at time t9 changes over time from time t11 to time t12.
2 at a speed corresponding to the descending speed of the magnetic piece 81b, and returns to the above-mentioned value m1' from time t12.

As described above, if the indenter pressing shaft assembly 25 rises together with the indenter 32 from time t11 and its end plate 28 abuts against the flange 17b of the drive shaft 17 at time t14, , the stop switch 48 is activated, and from the stop switch 48, at time t14, the switch K in FIG.
As shown in FIG. 3, a stop signal S48 is obtained and supplied to the control circuit 94.

Therefore, the control circuit 94 controls the motor drive circuit 93 so that the motor 43 stops at time t14 as shown in FIG. returns to the state where it is in contact with the flange 17b of the drive shaft 17.

The above is a series of operations of the first embodiment of the material testing machine according to the present invention shown in FIGS. 1A-C and 2.

According to the first embodiment of the material testing machine according to the present invention shown in FIGS. 1A to 2C and FIG. The output 891 obtained is as follows: The indenter 32 is pushed into the piece of material 1 with a pressing force increasing from the reference value V 2 through the value V1 to the value V2 to make an indentation 51 on the piece of material 1, and then: The indenter 32 is moved from the material piece 1 to the reference value ■ from the value V through the value V1. The pressing force of the indenter 32 against the material piece 1 when the indenter 32 is pushed into the material piece 1 and makes an indentation 51 on the material piece 1 when the indenter 32 is pushed into the material piece 1 and is separated while applying a pressing force to return to the material piece 1 reaches the value V1. The amount of penetration of the indenter 32 into the material piece 1 when removing it (for simplicity, this is
The same ml as the value m1 of the indenter penetration detection output S81)
Then, the pressing force of the indenter 32 against the material piece 1 when separating the indenter 32 from the material piece 1 after pushing the indenter 32 into the material piece 1 and making an indentation 51 on the material piece 1 is a value V1. Corresponds to the difference (m2 - ml) between the amount of penetration of the indenter 32 into the material piece 1 when removing the material (for simplicity, this is assumed to be m2, which is the same as the value m2 of the detection output S81 between indenter penetrations). are doing.

Therefore, the difference in penetration amount (m2-ml) can be displayed on the display 92.

By the way, such a difference in the amount of penetration (m2-ml) corresponds to the hardness or tensile strength of the material piece 1, although detailed explanation will be omitted.

Therefore, according to the material testing machine according to the present invention shown in FIGS. 1A-C and 2, the hardness and tensile strength of the material piece 1 can be measured using the penetration amounts m1 and m2 described above. can.

Furthermore, according to the material testing machine according to the present invention shown in FIG. 1 A-01 and FIG. , has an extremely simple configuration of the displacement detector 61 for detecting the indenter pressing force described above.

Furthermore, according to the material testing machine according to the present invention shown in FIGS. 1A-C and 2, the above-mentioned intrusion! The means for detecting the amount of penetration of the indenter into the material piece used when obtaining m1 and m2 has the above-described displacement detector 81 for detecting indenter penetration, and the indenter penetration detection output S81 from the displacement detector 81.
However, what kind of surface is the surface 3a of the material piece holding body 3, and what kind of surface is the material piece 1 on the material piece holding body 3?
is obtained with a value that is not affected by the state in which it is held. Therefore, the above-mentioned intrusion amounts m1 and m2 can be obtained with accurate values.

Example 2 Next, a second example of the material testing machine according to the present invention will be described.

The second embodiment of the material testing machine according to the present invention is according to the present invention described above in FIGS. 1A-C and 2, except for the following items, although illustration and detailed description are omitted.

It has the same configuration as the first embodiment of the material testing machine.

That is, in the processing circuit 91 shown in FIG. 2, when the indenter pressing force detection output 861 shown in FIG. Figure 3 1 obtained respectively
The indenter penetration detection output 5105A having the value m1 at time t4 of the indenter penetration detection output 881 shown in FIG. and an indenter penetration detection output 8105B having the value m2 at time t10 of the indentation penetration detection output S81, and a calculation output 51 of the difference between these indentation penetration detection outputs 5105A and 105B.
06 as the display 92 (, processing output 891), the above-mentioned time point t
4 pulse P101A and indenter pressing force detection output 861
Using the pulse P102 shown in FIG.
4, an indenter penetration detection output 105A having a value of 11 m1 at time t6, and an indenter penetration detection output (this is designated as 5105C) having a value m3 at time t6 of the indenter penetration amount detection output 881 are obtained. The calculated output of the difference between the interval detection outputs 5105A and 5105C is output to the display 92 as a processing output S91. Note that such a configuration can be easily configured in various ways by those skilled in the art, so further detailed explanation will be omitted.

The above is the configuration of the second embodiment of the material testing machine according to the present invention.

The second material testing machine according to the present invention having such a configuration
According to the embodiment, the indenter 32 is set to the reference value V, although detailed explanation will be omitted since it is clear from the above. With a pressing force increasing from , through value V1 to value V2, material piece 1
Then, when the indenter 32 is separated from the material piece 1, the indenter 32 is pushed into the material piece 1 to make an indentation 51 on the material piece 1. The intrusion ffi m 1 of the indenter 32 into the material piece 1 when the pressing force of the indenter 32 against the material piece 1 takes the value V1 when attaching the indenter 32 to the material piece 1; When the indentation 51 is made to the final depth on 1 (
The difference (m3-ml) between the amount of penetration of the indenter 32 into the material piece 1 (m3 - ml) when the pressing force of the indenter 32 against the material piece takes II [V2] and the amount of penetration into the material piece 1 can be displayed on the display 92. can.

By the way, such a difference in the amount of penetration (m - ml) corresponds to the yield stress of the material piece 1, although detailed explanation is omitted.

Therefore, according to the second embodiment of the material testing machine according to the invention, the yield stress of the material piece 1 can be measured using the above-mentioned intrusions 1 m 2 and m 3 .

Example 3 Next, a third example of the material testing machine according to the present invention will be described.

The third embodiment of the material testing machine according to the present invention is the same as the material testing machine according to the present invention described above in FIGS. 1A to 2C and FIG. This embodiment has the same configuration as the first embodiment.

That is, in the processing circuit 91 shown in FIG. 2, when the indenter pressing force detection output S61 shown in FIG. The resulting figure I
The indenter penetration detection output 5105A having the value m1 at time t4 of the indenter penetration detection output S81 shown in FIG. and an indenter penetration detection output 8105B having the value m2 at time t10 of the indentation penetration detection output S81, and a calculation output 81 of the difference between these indentation penetration detection outputs 5105A and 105B.
06 to the display 92 as the processing output S91, the above-mentioned time point t
Pulse P101B at 10 and indenter pressing force detection output S6
The third value obtained when 1 takes the value v2 at time t6
Using the pulse P102 shown in FIG.
10, and an indenter penetration detection output 105B having a value m2 at time t6 of the indenter penetration detection output S81 (this is referred to as 8105C). The calculated output of the difference between the intrusion detection output 5105A and $105C is output to the display 92 as a processing output S91. Note that such a configuration can be easily configured in various ways by those skilled in the art, so further detailed explanation will be omitted.

The above is the configuration of the third embodiment of the material testing machine according to the present invention.

The third material testing machine according to the present invention having such a configuration
According to the embodiment, the indenter 32 is pressed against the material piece 1 by increasing the pressing force from the reference value V through the value V1 to the value V2, although detailed explanation will be omitted since it is clear from the above.
to make an impression 51 on the piece of material 1, and then insert the indenter 32 from the piece of material 1 to the value V2 to the value v1.
through the reference value V. While applying pressure to return to
When the indenter 32 is pushed into the material piece 1 when separated and makes an indentation on the material piece to the final depth of No. 51 (when the pressing force of the indenter 32 against the material piece 1 takes the value v2)
Intrusion of the indenter 32 into the material piece 1 ff1m3 and the indenter 3
The pressing force of the indenter 32 against the material piece 1 when separating the indenter 32 from the material piece 1 after the indenter 32 is pushed into the material piece 1 to make an indentation 51 on the material piece 1 takes the value ■1. The difference between the amount of intrusion m2 of the indenter 32 into the material piece 1 and the amount of intrusion (3rd - 2nd) can be displayed on the display 92.

By the way, such a difference in the amount of penetration (m-2nd) is determined by the elastic modulus (Young's modulus) of the material piece 1, although detailed explanation will be omitted.
It corresponds to

Therefore, according to the third embodiment of the material testing machine according to the present invention, the material piece 1
The elastic modulus (Young's modulus) of can be measured.

Tomoi WataruA Next, a fourth embodiment of the material testing machine according to the present invention will be described.

The fourth embodiment of the material testing machine according to the invention has the same configuration as the first embodiment of the material testing machine according to the invention described above in FIGS. 1A-C and 2, except for the following: has.

That is, in the processing circuit 91 shown in FIG. 2, when the indenter pressing force detection output 861 shown in FIG. Figure 3 obtained ■
The value m at time t4't'' of the indenter penetration detection output S81 shown in FIG.
An indenter penetration detection output 5105A having a value of 1 and an indenter penetration detection output 8105B having a value m2 at time t10 of the indenter penetration detection output S81 are obtained, and the difference between these indentation penetration detection outputs 5105A and 105B is obtained. Instead of outputting the performance output 8106 as the processing output 891 to the display 92, detailed explanation of the illustration is omitted, but FIG. Using the pulse P102 shown in I, an indenter penetration detection output 881 having a value m3 at time t6 is obtained, and it is displayed on the display 92.
It is output as a processing output 891.

Note that such a configuration can be easily configured in various ways by those skilled in the art, so further detailed explanation will be omitted.

The above is the configuration of the fourth embodiment of the material testing machine according to the present invention.

Fourth aspect of the material testing machine according to the present invention having such a configuration
According to the embodiment, the indenter 32 is pushed into the material piece 1 with a pressing force that increases from the reference value V to the value 2, and the material is An indentation 51 is made on the piece 1, and then the indenter 32 is
When the indenter 32 is pushed into the material piece 1 when it is separated from the material piece 1 and an indentation 51 is made on the material piece to the final depth (the pressing force of the indenter 32 against the material piece 1 is the value V2)
The amount m3 of intrusion of the indenter 32 into the material piece 1 when the indenter 32 is removed can be displayed on the display 92.

By the way, such penetration amount m3 corresponds to the creep behavior of the material piece 1, although detailed explanation will be omitted.

Therefore, according to the fourth embodiment of the material testing machine according to the present invention, the creep behavior of the material piece 1 can be measured using the above-mentioned penetration amount m3.

Next, a fifth embodiment of the material testing machine according to the present invention will be described with reference to FIGS. 4A to C1 and FIG. 5.

In FIGS. 4A to 4C and FIG. 5, corresponding parts to those in FIGS. 1A to C1 and FIG. 2 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

The embodiment shown in FIG. 5 of the material testing machine according to the present invention shown in FIGS. 4A-C and FIG.
It has the same configuration as the first embodiment of the material testing machine according to the present invention shown in FIGS. A-C1 and FIG.

That is, the displacement detector 81 for detecting the indenter penetration is omitted.

However, the guide ring 13 guides the indenter pressing shaft element 25 so that the indenter pressing shaft assembly 25 as the pressing member can move downward and upward as described above.
On the end plate 14 side, it is rotatably provided to the indenter pressing shaft 13 integrally therewith, and the indenter pressing shaft 2
A mounting device 65 is provided which has a mounting plate portion 65a facing parallel to the free end surface of the drive @17 for moving the 5 downwardly and upwardly. A rotating pulse generator 66 is connected to its shaft 66a.
The coupling tool 6 is extended to the vicinity of the upper free end of the drive shaft 17 through the shaft insertion hole 65b previously provided in the mounting plate portion 65a, and the free end of the f* 66a is connected to the free end of the drive shaft 17.
It is connected and attached using 7.

This rotational pulse generator 66 is connected to the drive shaft 1 as described above.
7 is driven by the motor 43 in forward rotation or reverse rotation, the pulse train P6 changes depending on the rotation.
Generates 6.

By the way, the above-mentioned shaft alignment 25 for pressing the indenter is connected to the drive shaft 17.
When the drive shaft 17 is driven in the normal direction, it moves downward, and when the drive shaft 17 is driven in the reverse direction, it moves up. For this reason, the rotation pulse generator 66 generates a pulse train having a period corresponding to the movement speed of the indenter pressing shaft 25, in which the indenter pressing shaft 25 moves downward and upward. is generated as a pulse train P66.

In addition, for example, the clear sound part 25 of the shaft assembly 25 for pressing the indenter described above.
A support piece 84 is provided in the lower part of b and integrally therewith, extending outwardly in the radial direction, and on this support piece 84 a contact 85 with a flat surface is mounted. In this case, if the support piece 84 is conductive, the contact 85 is placed on the support piece 84 via an insulating material (not shown).

On the other hand, another support piece 86 is provided integrally with the clear sound part 71a of the contact 71 and extends outward in the radial direction, and the support piece 86 has a contact 85 at its free end. A bullet 88 is attached which provides a contact 87 for contacting the surface.

In this case, if the contact 71 and the elastic piece 88 are conductive, the elastic piece 88 is attached to the support piece 86 via an insulating material, or the contact 87 is attached to the elastic piece 88 via an insulating material. There is.

In this case, the indenter pressing shaft assembly 25 is at the height position shown in FIG. , indenter 32
and for pressing the indenter when the contact surface 72 of the contact 71 comes into contact with the surface 1a of the material piece 1 held on the surface 3a of the material piece holding body 3 by descending with the contact 71. The height position taken from the surface 3a of the material piece holding body 3 of the axis alignment 25 (this is referred to as the first height position), or from the first height position and the first height position, For indenter pressing! N! This is the height position between the sleeve 25 and the height position of the indenter pressing axis 25 (this is defined as a second height position) when the indenter 32 is brought into contact with the surface 1a of the material piece 1. is the third height position), when the indenter pressing shaft assembly 25 is lowered from the highest height position mentioned above, the contact 87 changes from the state in which it is in contact with the contact 85 to the contact 85. Contact points 85 and 87 are positioned on the support piece 84 and the bullet piece 88, respectively, so that they are not in contact with each other, and the resilient force of the bullet piece 88 is predetermined.

As will become clear from what will be described later, the contacts 85 and 87 described above, together with the contactor 71, constitute a switch 89 that constitutes an indenter penetration detection means.

The contact 85 constituting this switch 89 is the contact 7
The contact point 8' The state shown in FIG. 1A in which the contact point 7 is in contact with the contact point 87 changes to the state shown in FIG. 1B and FIG. 1C in which it is separated from the contact point 87. Therefore, the switch 89 changes from an on state to an off state.

Therefore, a switch signal S89 representing the on/off state of the switch 89 can be obtained from the switch 89.

Further, as shown in FIG. 5, the indenter pressing force is obtained from the displacement detector 61 for detecting the indenter pressing force, which constitutes the pressing force detection means, and represents the pressing force with which the indenter 32 presses the material piece 1. Detection output S61 and the rotation pulse generator 62 described above
The pulse train P66 obtained from the above-mentioned switch 89
A processing circuit 91 to which a switch signal S89 obtained from the processing circuit 91 is supplied, a display 92 that displays a processing output 391 from the processing circuit 91, a motor drive circuit 93 that drives the motor 43 described above, a processing circuit 91 and A control circuit 94 that controls a motor drive circuit 93 and a start switch 9
5.

An example of the processing circuit 91 is a 2-channel circuit similar to that described above in FIG.
The pulse train P66 from the rotary pulse generator 66 has two first and second comparison circuits 101 and 102.
is based on the first pulse of the pulse P101 from the comparator circuit 101 (this is referred to as pulse P101A), and the counter 107 starts counting from the point in time when it is obtained, and the same pulse train P66 is output from the switch 89. Based on the signal S89, a counter 108 starts addition counting from the point in time when the signal S89 changes from an off state to an on state, and a count output 5107 obtained from the counter 107 and a count output 8108 obtained from the counter 108. It has an arithmetic circuit 109 that performs a calculation to calculate the difference and outputs the calculation output 5109 to the display 92 as the processing output 891 of the processing circuit 91.

In this case, the counter 106 transfers the pulse train P66 from the rotational pulse generator 66 to the comparator circuit 10, as described above.
Based on the pulse train P101A from the comparator circuit 102, addition counting is started from the time when it is obtained, but at a time later than the pulse P102, which is obtained from the control circuit 94 based on the pulse P102 from the comparator circuit 102. Based on the pulse at , subtraction counting of the pulse train P66 is started from the point in time when the pulse train P66 is obtained, and the subtraction count is applied to the next acquisition after the pulse P101A of the pulse train P101 obtained from the comparator circuit 101 is obtained. Based on the pulse P103 obtained, the process is continued until the pulse P103 is obtained.

Further, as described above, the counter 108 starts counting based on the switch signal S89 from the time when the switch signal S89 changes from the OFF state to the ON state. Initially, the pulse P66 is subtracted and counted from the point where it is obtained, and the subtracted count is based on the switch signal S89.
This is done until the point where it transitions from the on state to the off state.

Furthermore, the arithmetic circuit 109 has counters 107 and 108.
The difference between the count outputs 8107 and 5108 obtained from the counters 107 and 108, respectively, is calculated as described above using the control signal 894 obtained from the post-control circuit 94 after the above-described subtraction counting of the pulse train P66 is completed.

The above is the configuration of the fifth embodiment of the material testing machine according to the present invention.

According to the material testing machine according to the present invention having such a configuration, the following operations can be obtained with reference to A to 0 and H' to O' in FIG.

6A-G correspond to FIGS. 3A-G, respectively, and FIGS. 6J, K, and 6 correspond to FIGS. 3I, J, and K, respectively.
It corresponds to

The operation of the fifth embodiment of the material testing machine according to the present invention shown in FIGS. 4A to C1 and FIG. 0' of the material testing machine according to the invention as described above in FIGS. 1A-C1 and FIG. The same operation as in the first embodiment is performed.

Therefore, the operation of the fifth embodiment of the material testing machine according to the present invention will be described below, omitting detailed explanations of operations that are not directly related to the rotary pulse generator 66, the switch 89, and the processing circuit 99.

As in FIGS. 1A-C1 and 2, the starting switch 95 shown in FIG. 5 is actuated at time 10.

In this case, as in the case of FIGS. 1A-C1 and 2, a start signal 395 is obtained from the start switch 95 at time 10, as shown in FIG. The signal is supplied to circuit 94.

Therefore, the control circuit 94 controls the motor drive circuit 93 by the control signal 594A from the control signal 594A and the motor drive signal S from the control circuit 94, as in the case of FIGS.
93 so that the motor 43 rotates normally, and therefore, as in the case of FIGS. 1A-C1 and 2, the time t
As shown in FIG. 6B, the motor 43, which had been in a stopped state before o, starts normal rotation from time point to, and in response, the motor 43 starts rotating normally at the first
As in the case of FIG. A-C1 and FIG.
As shown in FIG. 6C, it starts to descend at a constant speed from time point 10, and therefore, the height of the indenter pressing axis 25 takes a value that decreases at a constant speed from time point 10.

Since the indenter pressing shaft assembly 25 descends as described above,
Along with this, as in the case of FIG. 1 A-C1 and FIG.
As shown in the sixth diagram, from time point 10, the indenter 32 starts to descend at the same speed as the indenter pressing shaft alignment 25.
The height F takes a value that decreases from time point 10 at the same speed as the indenter pressing axis alignment 25.

If the indenter 32 is lowered as described above, FIGS.
2, the tip 33 of the indenter 32 is placed on the surface 1a of the material piece 1 at the time tQ, as shown in FIG. 4B.
Contact occurs from a later time point t3.

The indenter pressing shaft alignment 25 is similar to the case of FIGS. 1A to C1 and FIG. Surface 1 of material piece 1
Even if it makes contact with a, at the time t3 (1 also continues to descend as before the time t3. Therefore, the indenter pressing shaft alignment 25
However, as in the case of Figure 1~C1 and Figure 2, the indenter 3
2 towards the material piece 1 via the winding strip 41,
The tip 33 of the indenter 32 is pushed into the piece of material 1 from time t3.

The indenter pressing shaft alignment 25 and the indenter 32 are in this manner at time 10.
As shown in FIG. 1A-C1 and FIG. 2, the compression ff1G of the winding thread 41 decreases from time tO to time t3, for example, at zero, as shown in FIG. 6E. The reference value gO is taken as a value, and from time t3, a value that increases with time is taken.

In this way, the value of the compression fiG of the winding strip 41 at time t3
When the pressure receiving surface 34 of the pressure receiving portion 32b of the indenter 32 increases as shown in FIGS. 1A-C.

And as in the case of FIG. 2, from time t3, the indenter pressing shaft alignment 25 increases at the same speed as the compression ff1G of the winding strip 41 increases.

Therefore, the indenter 3 of the displacement detector 61 for detecting the indenter pressing force
The magnetic piece 61b attached to the engager 61G engaged with the pressure receiving surface 34 of the pressure receiving portion 32b of No. 2 is shown in FIG. 1A.
-C1 and in the case of FIG. 2, from time t3, in the air core of the electromagnetic transformer 61a, it rises from the reference position at the same speed as the value of the compression amount G of the winding strip 41 increases.

Therefore, the indenter pressing force detection output 861 from the electromagnetic transformer 61a of the indenter pressing force detection displacement detector 610 is as shown in FIG. , the reference value V, which is, for example, a zero value before time t3.

It is obtained by taking a value that increases with time from time t3 at a speed corresponding to the rising speed of the magnetic piece 61b, and hence the speed of increase in the compression ff1G of the winding strip 41.

On the other hand, if the indenter pressing @ sleeve 25 and the indenter 32 start descending from time point 10 as described above in FIGS. 6C and D, then the cases shown in FIGS. Similarly, as shown in FIG.
5 and the indenter 32 start descending at the same speed.

If the contact 71 is lowered from the time to as described above, and therefore the value of the height K of the contact 71 decreases with time from the time to, the contact surface 72 will be as shown in FIGS.
2, the tip 33 of the indenter 32 comes into contact with the surface 1a of the material piece 1 from time t2, which is earlier than time t3 when it comes into contact with the surface 1a of the material piece 1. The indenter pressing shaft valve 25 and the indenter 32 are configured such that the contact surface 72 of the contactor 71 contacts the surface 1a of the material piece 1 from the time t2, as in the case of FIGS. 1A-C1 and 2. However, Figure 6C
As described above in and D, after time t2 it continues to fall in the same way as before time t2. For this reason, the indenter pressing shaft stand 25 is
As in the case of FIGS. 1A to C1 and FIG. 2, from time t2 the contact 71 is pressed towards the piece of material 1 via the winding strip 74. However, the force of the winding strip 74 is sufficiently small that the contact 71 is not substantially pushed into the piece of material 1, as in the case of FIGS. After time t2, the height K of 71 maintains the value 1 at time t2.

In this way, the height of the contactor 71 maintains a value of 1 after time t2, while the height F of the indenter 32 also takes a value that decreases with time at time t2m. 2
From time t2 or a later time (hereinafter referred to as time tA) when the height H of the indenter 5 takes the value hA, the contact 85 on the support piece 85 provided on the indenter pressing shaft 25 moves to the contact 7
1 through a support piece 86 and an elastic piece 88. Therefore, from time tA, the switch 89
Switching from the on state before time tA to the off state,
Therefore, from the switch 89, a switch signal 389 is obtained at time tA on, as shown in FIG. 6I, and the switch signal 889 is supplied to the processing circuit 108.

On the other hand, the indenter pressing axle 25 is rotated at time 10 as described above.
As shown in FIG.
The pulse train 866 is supplied to the counters 107 and 108 of the processing circuit 91.

Therefore, the counter 108, as shown in FIG. 6N,
Based on the switch signal 889, the time t when it turns on
Starting from A, addition and counting of pulses, HJ S 66 is started.

As described above, the displacement detector 61 for detecting the indenter pressing force
As shown in FIG. 6F, the value of the indenter pressing force detection output S61 increased with time from time t3, but the value of the indenter pressing force detection output 861 obtained from time t4 increased. If the value of the pressing force setting signal 5103 obtained from the pressing force setting circuit 103 shown in FIG. At time t4, pulse P101A is obtained as the first pulse of pulses P101, as shown in FIG. 6J, and pulse PIOIA is supplied to counter 107 of processing circuit 91. For this reason,
The counter 107 receives the pulse P1 as shown in FIG.
Based on pulse train P66, addition and counting of pulse train P66 is started from time point t4 when pulse train P66 is obtained.

Further, the value of the indenter pressing force detection output 861 obtained from the displacement detector 61 for detecting the indenter pressing force is at the time t6 after the time t4.
If it matches the value v2 of the pressing force setting signal fis104 obtained from the pressing force setting circuit 104 shown in FIG.
As in the case of FIGS. 1A to C1 and FIG. 2, the comparator circuit 1
At time t6, a pulse P102 is obtained and is supplied to the control circuit 94, as shown in FIG.

Therefore, the control circuit 94 controls the motor drive circuit 93 by the control signal 594A and the motor 4 by the drive signal S93, as in the case of FIG. 1A-C1 and FIG.
3 stops at time t6, and then starts reversing at time t7, which is a certain period of time after time t6.

Therefore, as in the case of FIGS. 1A to C1 and FIG. 2, the motor 43 stops rotating from time t6 to time t7, and starts reversing from time t7, as shown in FIG. 6B. In response to this, the indenter pressing shaft 25 stops descending from time t6, as shown in FIG. 2
5 at time t from time t6 to time t7.
The value h1 at 6 is maintained. And, the indenter pressing @ mantle 25 is
From time t7 to time t, as in the case of FIG. 1~C1 and FIG.

It starts rising at the same speed as the falling speed from to time t6.

In addition, the indenter pressing axis 25 stops descending from time t6 and maintains this state until time t7, so that the indenter 32 is moved as shown in FIGS. 1A-C and 2. Similarly, as shown in the sixth diagram, the lowering is stopped from time t6 and this state is maintained until time t7, so that the height F of the indenter 32 changes from time t6 to time t7. Until t7, the value f3 at time t6 is maintained, and the compression amount G of the winding strip 41 remains as shown in FIGS. 1A to C1 and 2, and as shown in FIG. 6E. From time t6 to time t7, the value g2 at time t6 is maintained.

However, since the indenter pressing axis 25 rises from time t7, the value of the compression ff1G of the winding strip 41 changes as shown in FIG.
- As in the case of C1 and FIG. 2, from time 7, it decreases with time from the value g2 at time 6.

Furthermore, if the material piece 1 has substantially no elastic restoring force, the indenter 32 will not receive any pushing up force from the material piece 1, so even if the value of the compression ff1G of the winding strip 41 decreases from time t7. , does not substantially increase from time t7. however,
The piece of material 1 generally has an elastic restoring force. For this reason, the indenter 32 is
Since the pushing up force is received from the material piece 1, as the value of the compression filG of the winding strip 41 decreases from time t7, the sixth
As shown in the figure, the indenter 3 rises from time t7 to time t9 where it no longer receives the push-up force from the material piece 1.
From time t7, the height F of 2 increases from the value f3 at time t6.

Therefore, the value of the compression ff1G of the winding spring 41 is as shown in FIG.
As in the case of C1 and FIG. 2, from time t7 to time t9
Until then, it decreases at a slower speed than the rising speed of the indenter pressing shaft 25.

As described above, the indenter 32 rises from time t7 to time t9, and the value of the compression amount G of the winding strip 41 is set to the value for pressing the indenter from time t7 to time t9, as described above. Although the indenter 32 decreases at a slower speed than the axis alignment 25, the indenter 32 reaches the time t9 as in the case of FIGS. 1A-C1 and 2.
Therefore, even if the indenter pressing axis 25 rises after time t9 in the same way as before time t9, it does not rise, and therefore the height F of the indenter 32 is , FIG. 1A-C, and FIG. 2, at time t9) et al.
The value f2 at time t9 is maintained. Therefore, the value of the compression mG of the winding strip 41 changes from time t9 at the same speed as the rising speed of the indenter pressing shaft 25, as in the case of FIGS. 1A-C and FIG. It decreases from the value g1 at .

As described above, the value of the compression ff1G of the winding thread 41 maintains the value q2 at time t6 from time t6 to time t7, and the value of the compression ff1G of the winding thread 41 remains at the value q2 at time t6 from time t7 to time t9. decreases at a slower rate than the rate of increase, and at time t9
Since it decreases by the same value as the rising speed of the indenter pressing shaft element 25 from
The magnetic piece 61b attached to 1c is shown in FIGS. 1A-C.
1 and 2, in the air core of the electromagnetic transformer 61a, from time t6 to time t7, time t
However, from time t7 and even after time t9, it rises from the position at time t6 at the same speed as the rate at which the compression mG of the winding strip 41 decreases.

Therefore, the indenter pressing force detection output 861 from the electromagnetic transformer 61a of the displacement detector 61 for detecting the indenter pressing force is as shown in FIG. Then, from time t6 to time t7, the above-mentioned value v2 at time t6 is taken, and from time t7 to time t9, the rising speed of the magnetic piece 61b, and therefore the winding strip 4
It is obtained by taking a value that decreases at a rate corresponding to the rate of decrease of the compression fjltG of 1.

On the other hand, since the motor 43 stops rotating from time t6 as described above, the pulse train P66 from the rotational pulse generator 66 is no longer obtained from time t6. For this reason,
As shown in FIG. 6N, the counter 108 has been adding and counting the pulse train P66 since the time tA, and the counter 107 has been adding and counting the pulse train P66 since the time t4. It ends as shown in Figure O.

However, as described above, the motor 43 starts reversing at time t7 based on the pulse train P102 obtained from the comparison circuit 102 at time t7, so the pulse train P66 is again output from the rotational pulse generator 66. As shown in FIG. 6H, it is obtained from time t7.

On the other hand, based on the pulse P102 obtained from the comparison circuit 102, the control circuit 94 obtains a pulse P103 at time t7 when the pulse P102 is obtained, as shown in FIG. 108.

Therefore, both the counters 107 and 10B start subtracting the pulse train P66 obtained from time t7 again from time t7, as shown in FIGS. 60 and 6N, respectively.

Moreover, as described above in FIG.
2, and the indenter pressing force detection output 861
The value of is before the above-mentioned time t9 or after the time t9 (
Hereinafter, that time point will be referred to as time tl after time t9.

), the pressing force setting circuit 103 shown in FIG.
If it matches the value ■1 of the pressing force setting signal $103 obtained from , the pulse P101B is supplied to the counter 107.

Therefore, the counter 107 changes the pulse train P66 to the time t.
The subtraction counting from 7 is stopped from time t10,
Therefore, from time tlo, the count value of pulse train P66 from time t4 to time t6 and from time t7 to time t10
A count output 8107 of the difference between the count value and the pulse train P66 up to this point is output to the arithmetic circuit 109.

In addition, the indenter pressing axle 25 continues to rise after the time t9 as before the time t9, but the indenter 32 does not rise from the time t9 as shown in (e) above, so FIGS. 2, the pressure receiving portion 32b of the indenter 32 is received by the step receiving surface 30 of the indenter pressing shaft element 25 from time t11 after the above-described time t10.

Therefore, the value of the compression amount G of the winding thread 41 is
1 and 2, from time t11, the indenter 32 returns to the standard [10 before the above-mentioned time t3, and from time t11, the indenter 32 rises along with the indenter pressing shaft element 25. It rises at the same speed as the speed.

Furthermore, since the compression mG of the winding thread 41 returns to the reference value go from time t11, the value of the indenter pressing force detection output S61 obtained from the displacement detector 61 for detecting the compression old pressing force is ~C1 and as in FIG. 2, time t1
1, normativity V. to return to.

On the other hand, the indenter pressing shaft alignment 25 is adjusted at time t as described above.
After 9, the upper limit is the same as before time t9, and the height is 1-1.
At time tB, when the value hA at time tA described above is reached, the 1& points 85 of the eight switches come into contact with the contact 87 that was away from time tA. Therefore, the switch 89
From time tB, the state that was off before time tB changes to the on state, and therefore, the switches 89h1, etc.
As shown in FIG. 1, the switch signal S89 is obtained on from time tB, and the switch signal S9
is supplied to the counter 108.

Therefore, the counter 108 changes the pulse train P66 to the time t.
From time tB, the count value of the pulse train P66 from time tA to time t6 and the pulse train P66 from time t7 to time tB are changed from time tB to time tB. Count output 5 of the difference from the count value of
107 is output to the arithmetic circuit 109.

This arithmetic circuit 109 includes a counter 1 as described above.
From time t10, the count output 5107 starts from 08,
Since the arithmetic circuit 109 is supplied with the
The value of the count output $107 is transferred to the counter 1 described above.
A computation for correction is performed based on the value of the count output 5108 from 08, and the computation output 5109 is outputted to the display 92 as the output S91 of the processing circuit 91.

Further, since the indenter 32 rises from time t11, from time t12 after time t11, the engaging element 71b of the contactor 71 moves from the time t12 after the time t11 to the indenter pressing shaft, as in the case of FIGS. 25 by the lower end surface 38 of the guide groove 26, so that the contact 71, as in FIGS. 1A-C1 and FIG. From the position where it was in contact with the surface 1a, the indenter 32
rises at the same rate as the rising speed of

As described above, if the indenter pressing shaft assembly 25 rises together with the indenter 32 from time t11 and its end plate 28 abuts against the flange 17b of the drive shaft 17 at time t14, , the stop switch 48 is activated in the same manner as in FIGS. 1A to C1 and FIG. and is supplied to the control circuit 94.

Therefore, the control circuit 94 controls the motor drive circuit 93 so that the motor 43 stops at time t14 as shown in FIG. 6B, as in the cases of FIGS. Therefore, the indenter pressing shaft alignment 25 is aligned with the end plate portion 28.
returns to the state where it is in contact with the flange 17b of the drive shaft 17.

The above is a series of operations of the fifth embodiment of the material testing machine according to the present invention shown in FIGS. 4A to 4C and FIG. 5.

According to a fifth embodiment of the material testing machine according to the present invention shown in FIGS. 4A-C and FIG.
The value of the count output 3107 of 7 is the same as in the case of FIGS. 1A-C1 and 2, when the indenter 32 is set to the reference value V. The material piece 1 is pressed into the material piece 1 with a pressing force increasing from , through the value v1 to the value V2, and an indentation 51 is made on the material piece 1, and then,
The indenter 32 is moved from the piece of material 1 to the reference value V from the value V2 through the value v1. The pressing force of the indenter 32 against the material piece 1 when pushing the indenter 32 into the material piece 1 and making an indentation 51 on the material piece 1 is 1lIIV1. Intrusion ff1m1 of the indenter 32 into the material piece 1 when removing the material, and when separating the indenter 32 from the material piece 1 after pushing the indenter 32 into the material piece 1 and making an indentation 51 on the material piece 1. , corresponds to the difference (m - ml) between the amount m2 of the indenter 32 entering the material piece 1 and the amount m2 of the indenter 32 entering the material piece 1 when the pressing force of the indenter 32 on the material piece 1 takes the value V1.

Therefore, the intrusion ω difference (m2-ml) can be displayed on the display 92 as in the case of FIGS. 1A to C1 and FIG. 2.

By the way, such a penetration M difference (m - ml) is determined by the hardness or tensile strength of the material piece 1, as in the case of FIGS. 1A to C1 and FIG. 2, although detailed explanation is omitted. Compatible.

In addition, the counter output 5108 of the counter 08 mentioned above
If the material piece 1 is a piece of material that causes a drop in the height of the surface 1a by being pressed by the indenter 32, and the height does not recover to the original value, the value of the penetration amount difference ( m - ml), which corresponds to the error (this is referred to as E) caused by the drop in the height of the surface 1a of the material piece 1.

In this regard, in the explanation of the series of operations of the fifth embodiment of the material testing machine according to the present invention described above, in FIG. 6, the solid line indicates that even when the material piece 1 is pressed by the indenter 32, Although it has been explained that the material piece 1 does not substantially drop in height, when the material piece 1 is pressed by the indenter 32, the height of the surface 1a drops, and the height changes. In the case of a piece of material that does not recover to the specified value, the series of operations of the fifth embodiment of the material testing machine according to the present invention is as shown in the dotted line diagram in FIG. 6A-0 and in FIG. 6H', although detailed explanation will be omitted. ~O' is performed as shown. Note 1
, each point in time in this case is indicated by the same reference numeral with a dash as in the case of the solid line in FIG. 6A-0.

From the above, the calculation output 510 of the calculation circuit 109
9. Therefore, the value of the processing output S91 of the processing circuit 91 has a value obtained by correcting the above-mentioned intrusion amount difference (m2-ml) by the above-mentioned error E.

Therefore, according to the fifth embodiment of the material testing machine according to the present invention shown in FIGS. 4A to 5C and FIG.
m1. and m2, the hardness and tensile strength of the material piece 1 can be measured without the above-mentioned errors.

Example 6 Next, a sixth example of the material testing machine according to the present invention will be described.

The sixth embodiment of the material testing machine according to the present invention is the same as the material testing machine according to the present invention described above in FIGS. 4A to 5C and FIG. This embodiment has the same configuration as the first embodiment.

That is, in the processing circuit 91 shown in FIG. 5, the count output 5107 of the counter 107 is converted into the indenter pressing force detection output 861 shown in FIG. The pulses P101A and PloIB shown in FIG. 6J, which are obtained when both take the value V1, and the indenter pressing force detection output 8
Based on the pulse P102 shown in FIG. 6K obtained when the rotation pulse generating circuit 61 takes the value 2 at time t6, the pulse train P66 obtained from the rotation pulse generation circuit 66 is generated using the pulse P103 obtained from the control circuit 94. , pulse P10
Instead of adding and counting from the time when 1A is obtained to time t6 when pulse P102 is obtained, and then subtracting from time t7 when pulse P103 is obtained to time t10 when pulse P101B is obtained. , the calculation output (this is referred to as calculation output 5200) corresponding to the count output 8107 can be obtained using, for example, the indenter pressing force detection output S61, although detailed illustration is omitted. At the time t3 when it comes into contact with
The count obtained by counting the pulse train P66 from time t3 when pulse P101S is obtained to time 10 when pulse PI 02 is obtained using the pulse at (this is referred to as pulse P101S) and the pulses P101A and P2O3 described above. Calculation of the difference between the output (this is set as 3201) and the count output (this is set as 8202) obtained by counting the pulse train P66 from time t4 when pulse P101A is obtained to time t6 when pulse P102 is obtained. Output. Note that such a configuration can be easily configured in various ways by those skilled in the art, so further detailed explanation will be omitted.

The above is the configuration of the sixth embodiment of the material testing machine according to the present invention.

The sixth material testing machine according to the present invention having such a configuration
According to the embodiment, although a detailed explanation will be omitted, the above-mentioned count output 5201 indicates that when the indenter 32 is pushed into the material piece 1 and the indentation 51 is made on the material piece 1 to the final depth, the indenter 32 corresponds to 1 m3 of penetration of the indenter 32 into the material piece 1 when the pressing force on the material piece 1 takes the value ■2, and the count output 5202 corresponds to Top) Corresponds to the intrusion amount m1.

Therefore, the above-mentioned 't4R output 5200 corresponds to the above-mentioned intrusion amount difference (m3-m+) between im3 and m2. By the way, such a difference in the amount of penetration (m3-ml
) corresponds to the yield stress of the material piece 1, although detailed explanation is omitted.

Therefore, according to the sixth embodiment of the material test according to the invention, the above-mentioned intrusions hi m 1 and m.

can be used to measure the yield stress of the material piece 1.

Embodiment 7 Next, a seventh embodiment of the material testing machine according to the present invention will be described.

The seventh embodiment of the material testing machine according to the present invention is the same as the material testing machine according to the present invention described above in FIGS. 4A-C and FIG. This embodiment has the same configuration as the fifth embodiment.

That is, in the processing circuit 91 shown in FIG. 5, the count output 5107 of the counter 107 is converted into the indenter pressing force detection output 361 shown in FIG. The pulses P101A and PloIB shown in FIG. 6J, which are obtained when both take the value V1, and the indenter pressing force detection output S
Using the pulse P103 obtained from the control circuit 94 based on the pulse P102 shown in FIG. Pulse P101
From the time when A is obtained to the time t when pulse P102 is obtained
Instead of adding and counting up to 6 and then subtracting and counting from the time t7 when the pulse P103 is obtained to the time tlo when the pulse P101B is obtained, the count output corresponding to the count output 5107 is used. The count output 5300) is the pulse at the time t3 when the indenter 32 contacts the material piece 1 (this is the pulse P101S) and the above-mentioned pulses P102, P2O3, and PloIB, the pulse train P66 is added and counted from the time t3 when the pulse PIOIS is 17 to the time 6 when the pulse P102 is obtained, and then the pulse P103 is obtained. time t
The count output is obtained by subtraction counting from 7 to the time t10 when the pulse P101B is 1q.

Note that such a configuration can be easily configured in various ways by those skilled in the art, so further detailed explanation will be omitted.

The above is the configuration of the seventh embodiment of the material testing machine according to the present invention.

Seventh aspect of the material testing machine according to the present invention having such a configuration
According to the embodiment, although a detailed explanation will be omitted, the count output 8300 mentioned above is obtained when the indenter 32 is pushed into the material piece 1 and the indentation 51 is made on the material piece 1 to the final depth (the indenter The amount of penetration m3 of the indenter 32 into the material piece 1 when the pressing force against the material piece 1 of the indenter 32 takes the value 2) and the amount of penetration m3 described above in the fifth embodiment of the material testing machine according to the present invention.
This corresponds to the difference in the amount of penetration (m3 - m2) from 2.

By the way, such a difference in the amount of penetration (3rd - 2nd) corresponds to the elastic modulus (Young's modulus) of the material piece 1, although detailed explanation will be omitted.

Therefore, according to the seventh embodiment of the material testing machine according to the present invention, the material piece 1 is
The elastic modulus (Young's modulus) of can be measured.

Example 8 Next, an eighth example of the material testing machine according to the present invention will be described.

The eighth embodiment of the material testing machine according to the present invention has the same configuration as the fifth embodiment of the material testing machine according to the present invention described above in FIGS. 4A to 4C and FIG. 5, except for the following matters. has.

That is, in the processing circuit 91 shown in FIG. 5, the count output 5107 of the counter 107 is converted into the indenter pressing force detection output S61 shown in FIG. The pulses P101△ and PlolB shown in FIG. 6 J, which are obtained when both take the value ■1, and the indenter pressing force detection output 3
Based on the pulse P102 shown in FIG. 6K, which is 1!7 when 61 takes the value v2 at time t6,
4, the pulse train P66 obtained from the rotational pulse generation circuit 66 is
Addition counting is performed from the time point when 101A is obtained to the time point t6 when the pulse P1-2 is obtained, and then from the time point t7 when the pulse P103 is obtained to the time point t1 when the pulse P1-IB is obtained.
Instead of using the count output obtained by subtracting the count to 0, the count output corresponding to the count output 5107 (this is referred to as the count output 5400) may be used as, for example, the indenter pressing force detection output, although detailed illustrations and detailed explanations are omitted. S61
A pulse train P is created using the pulse at the time t3 when the indenter 32 contacts the material piece 1 (this is referred to as pulse P101S), which can be obtained using the above-mentioned pulse P102.
Let 66 be the count output obtained by counting from time t3 when pulse P101S is obtained to time 10 when pulse P102 is obtained. It should be noted that such a configuration can be easily configured in various ways by those involved, so further detailed explanation will be omitted.

The above is the configuration of the eighth embodiment of the material testing machine according to the present invention.

According to the eighth embodiment of the material testing machine having such a configuration, although detailed explanation is omitted, the above-mentioned count output 5
400, when the indenter 32 is pushed into the material piece 1 and the indentation 51 is made to the final depth on the material piece 1 (the indenter 32
This corresponds to the intrusion fim3 of the indenter 32 into the material piece 1 when the pressing force against the material piece 1 takes the value 2.
By the way, such a difference in the amount of penetration m3 corresponds to the creep behavior of the material piece 1, although detailed explanation will be omitted.

Therefore, according to the eighth embodiment of the material testing machine according to the invention, the creep behavior of the material piece 1 can be measured using the above-mentioned intrusion ff1m3.

In addition, in the above description, only a few examples of the present invention have been shown, and for example, since the electromagnetic transformer 81a as a stator of the displacement detector 81 for detecting indenter penetration is fixed to the indenter 32, a contactor may be used instead. 71, and correspondingly, an engaging element 81c attached with a magnetic piece 81b as a movable element of the displacement detector 81 for detecting indenter penetration is brought into contact with 71 as a contact element. , it is also possible to have a structure in which it is in contact with the indenter 32, and instead of fixing the electromagnetic transformer 61a as a stator of the displacement detection 361 for indenter pressing force detection to the indenter pressing force, it can be fixed to the indenter 32. In addition, in accordance with this, instead of bringing the engaging element 61C attached with the magnetic piece 61b as a mover of the displacement detector 61 for detecting the indenter pressing force into contact with the indenter 32, an indenter pressing ring is used. Alternatively, the contactor 71 may be brought into contact with the surface of the material piece 1 instead of contacting the surface 1a of the indenter 32, and the switch 8 may be brought into contact with the gold 25.
9 is replaced by providing a contact point 85 on the indenter pressing ring metal 25,
Contacts 85 and 86 may be provided on the indenter 32, and contacts 85 and 86 may be provided on the contact 71 and the indenter pressing 'It1, respectively.
25 or the indenter 32, and various other modifications and changes may be made without departing from the spirit of the invention.

[Brief explanation of the drawing]

FIGS. 1A to 1C are partially cross-sectional route diagrams showing the mechanical system of a first embodiment of the material testing machine according to the present invention. FIG. 2 is a systematic connection diagram showing the electrical system of the first embodiment of the material testing machine according to the present invention. FIGS. 3A-3 are route maps for explaining the operation of the first embodiment of the material testing machine according to the present invention. FIGS. 4A to 4C are partially cross-sectional route diagrams showing the mechanical system of the fifth embodiment of the material testing machine according to the present invention. FIG. 5 is a systematic connection diagram showing the electrical system of the fifth embodiment of the material testing machine according to the present invention. FIGS. 6A-0 and H'-O' are route diagrams for explaining the operation of the fifth embodiment of the material testing machine according to the present invention. 1... Material piece 1a... Surface 2... Base body 3... Holder 4... ... Support screw shaft 5.6 ... Lead screw 11 ...... Support column 12 ... Support arm 13 ... Guide shaft 14...End plate 15...Shaft hole 17...Drive shaft 18...Keyway 21・・・・・・・・・Drive wheel 23・・・・・・・Main screw 25・・・・・・・Sound for pressing indenter 25a・・・
・・Indenter guide @Gable part 25b ・・Clean sound part 26 ・・Guiding groove 27 ・・・・・Slit 28 ・・・・・End plate portion 29......Main thread 30......Step receiving surface 31... Spring receiving portion 32......・Indenter 32a...Shaft 32b...Press receiving part 33...Point 34...Press receiving part 35... ...Press portion 36...Press portion 37...Shaft hole 38...Lower end surface 39... ... Support piece 41 ... ... Winding strip 43 ... Motor 44 ... Drive wheel 45 ...... Belt 47...Switch mounting piece 48...
...Stop switch 48a...Movable contact 49...Switch receiving piece 51...Indentation 61...・Displacement detector 6 for detecting indenter pressing force
1a... Differential transformer 61b... Magnetic piece 61c... Engagement element 62... Engagement surface 65...・Mounting tool 65a... Mounting plate part 65b... Shaft insertion hole 66... Rotating pulse generator 66a...
......Shaft 67...Coupling 75...Batch 76...Top surface 81... ...Displacement detector 8 for detecting indenter pressing force
1a... Electromagnetic transformer 81b... Magnetic piece 81C... Engagement element 82... Engaging surface 84... Support piece 85...Contact 86...Support piece 87...Contact 88...Bullet piece 89. ......Switch 91...Processing circuit 92...Display 93...Motor drive circuit 94...・・・
...Control circuit 95...Start switch 101.1
02 ...... Comparison circuit 103.104 ...... Pressing force setting circuit 105 ...... Latch circuit 106.109 ...... Performance n circuit 107 , 108... Counter Plol... Pulse 101A... First pulse 10 of pulse P101
1B ・・・・・・Pulse P10 next to pulse P101
2, P2O3...Pulse P66...Pulse train 848...Stop signal S61...Indenter pressing force detection output 881...
... Indenter penetration detection output 891 ... Processing output S93 ... Motor drive signal 594A ... Control signal 894B ... Control signal S95 ... Start signal 5105. 5105A, 81058 ......Indenter penetration detection output 5106...
Computation output

Claims (1)

[Scope of Claims] 1. A material piece holding body that holds a material piece; an indenter that presses into the material piece to make an indentation on the material piece; and an indenter that presses the indenter into the material piece. an indenter pressing member that presses in such a manner that the indenter presses the material piece; an indenter pressing force detection means that detects an indenter pressing force with which the indenter presses the material piece; and an indenter that the indenter presses into the material piece. In a material testing machine having an indenter penetration amount detection means for detecting an indentation amount, an indenter pressure transmission member is interposed between the indenter pressing member and the indenter, and the indenter pressing force transmission member is made of a resilient material. The indenter pressing force detection means comprises a stator fixed to either one of the indenter and the indenter pressing member, and a movable member whose free end is in contact with the other of the indenter and the indenter pressing member. A material testing machine characterized by having a displacement detector for detecting an indenter pressing force. 2. A material piece holding body for holding a material piece; an indenter for pushing into the material piece to make an impression on the material piece; and pressing the indenter so that it pushes into the material piece. an indenter pressing member; an indenter pressing force detection means for detecting an indenter pressing force with which the indenter presses the material piece; and an indenter that detects the amount of indenter penetration by which the indenter presses into the material piece. an indenter pressing force transmitting member is interposed between the indenter pressing member and the indenter, the indenter pressing force transmitting member is made of a resilient material, and the indenter pressing force is An indenter pressing force, wherein the detection means includes a stator fixed to either one of the indenter and the indenter pressing member, and a movable element whose free end is in contact with the other of the indenter and the indenter pressing member. The indenter penetration amount detection means has a contactor that contacts the material piece from the surface thereof, and a displacement detector for detecting the indentation penetration amount that has a stator and a movable element. The indenter penetration amount detection means includes a contactor that contacts the material piece from the surface thereof, and a displacement detector for detecting the indentation penetration amount having a stator and a movable element, and the displacement detector for detecting the indentation penetration amount. a stator is fixed to either one of the indenter and the contactor, and a movable element of the displacement detector for detecting the amount of indentation intrusion has its free end in contact with the other of the indenter and the contactor. A material testing machine featuring: 3. A material piece holding body for holding a material piece; an indenter for pushing and penetrating the material piece to make an indentation on the material piece; and pressing the said indenter so that it presses and penetrates the material piece. an indenter pressing member; an indenter pressing force detection means for detecting an indenter pressing force with which the indenter presses the material piece; and an indenter that detects an indenter intrusion period where the indenter presses into the material piece. an indenter pressing force transmitting member is interposed between the indenter pressing member and the indenter, the indenter pressing force transmitting member is made of a resilient material, and the indenter pressing force is A displacement detector in which the detection means includes a stator fixed to either one of the indenter and the indenter pressing member, and a movable element whose free end is in contact with the other of the indenter and the indenter pressing member. (a) When the indenter pressing member moves to press the indenter, the indenter penetration amount detection means includes: (a) pulse generating means that generates a pulse train in accordance with the movement of the indenter pressing member;
(b) Based on the pulse train from the pulse generating means and the output from the indenter pressing force detecting means, the pressing force of the indenter against the material piece changes from the first value to the second value. 1. A material testing machine characterized by having a counting means for counting the time. 4. A material piece holding body for holding a material piece; an indenter for pushing and penetrating the material piece to make an indentation on the material piece; and pressing the said indenter so that it presses and penetrates the material piece. an indenter pressing member; an indenter pressing force detection means for detecting an indenter pressing force with which the indenter presses the material piece; and an indenter that detects the amount of indenter penetration by which the indenter presses into the material piece. In a material testing machine having a penetration amount detection means, a pressing force transmitting member is interposed between the indenter pressing member and the indenter, the indenter pressing force transmitting member is made of a resilient material, and the indenter pressing force is detected. Indenter pressing force detection, wherein the means includes a stator fixed to either one of the indenter and the indenter pressing member, and a movable element having a free end in contact with the other of the indenter and the indenter pressing member. (a) When the indenter pressing member moves in a first direction to press the indenter, the indenter penetration amount detecting means detects a first pulse train according to the movement; and when the indenter pressing member moves in the first direction and then moves in a second direction opposite to the first direction, a second pulse train is generated in accordance with the movement. and (b) a first pulse train from the pulse generating means based on the output from the indenter pressing force detection means, such that the pressing force of the indenter against the material piece is a first pulse train. is counted as a first count value until the value of 1st
A material characterized in that it has a counting means that counts as a second counted value until the value reaches the value of , and obtains a counted value of the difference between the first counted value and the second counted value. testing machine. 5. A material piece holding body for holding a material piece; an indenter for pushing into the material piece to make an indentation on the material piece; and pressing the indenter so that it presses into the material piece. an indenter pressing member; an indenter pressing force detection means for detecting an indenter pressing force with which the indenter presses the material piece; and an indenter that detects the amount of indenter penetration by which the indenter presses into the material piece. an indenter pressing force transmitting member is interposed between the indenter pressing member and the indenter, the indenter pressing force transmitting member is made of a resilient material, and the indenter pressing force is An indenter pressing force, wherein the detection means includes a stator fixed to either one of the indenter and the indenter pressing member, and a movable element whose free end is in contact with the other of the indenter and the indenter pressing member. (a) When the indenter pressing member moves in a first direction to press the indenter, the indenter penetration amount detecting means detects a first displacement according to the movement. When a pulse train is generated and the indenter pressing member moves in the first direction and then moves in a second direction opposite to the first direction, a second a pulse generating means for generating a pulse train; (b) a contact whose free end is in contact with either the indenter pressing member or the surface of the indenter and the material piece; and (c) the indenter pressing member. or indenter,
and (d) a switch having first and second contacts provided on the other of the material pieces and the contactor, respectively; A first pulse train from the pulse generating means is counted as a first count value until the pressing force of the indenter against the material piece reaches a second value from the first value, and The second pulse train is counted as a second count value until the pressing force of the indenter against the material piece reaches the first value from the second value, and while the switch is on. counting the first pulse train from the pulse generating means as a third count value;
The second pulse train from the pulse generating means is counted as a fourth count value, and the difference between the first count value and the second count value is the third count value and the fourth count value. 1. A material testing machine comprising: counting means for obtaining a counted value that is corrected by a difference between the numerical value and the numerical value.