JP2004301791A - Friction/wear measuring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To measure the peel resistance of a coating film by using friction/wear measurement and measure friction/wear under a continuous load and a constant vertical load. <P>SOLUTION: A friction/wear measuring apparatus comprises a support strut 13 provided vertically movably on a top face of a base board 11, a balance arm 15 pivoted on the support strut for measuring the friction/wear, etc. of a sample paper and a moving table 30 which moves in interlock with a moving weight 25 mounted on a weight section 18, the table 30 being installed on the top face of the base board in the state of being capable of moving back and forth below the weight section 18 attached on one end of the balance arm. A sample table 65 is installed in the state of being capable of moving back and forth on the top face of the board below a probe 60 mounted on a measuring section 50 provided on the other end of the arm 15. A displacement meter 83 provided on the tip of a displacement measuring unit 80 having a stem part 81 rotatably mounted on the board is movably formed and positioned right above the probe 60. The table 30 and the table 65 are simultaneously moved back and forth, or one of the two tables is moved back and forth to measure and indicate the friction force, friction resistance, friction depth, wear volume, etc., of the sample paper. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for measuring a frictional resistance or abrasion resistance of a material surface used for various products.
[0002]
[Prior art]
Conventionally, various thin films are applied to the surface of various products in order to prevent rust or maintain a good lubricating state, but the present invention is not limited to this. The adhesive force is measured by measuring frictional resistance and wear scratch resistance.
[0003]
The measurement method is a so-called continuous load measurement in which a vertical load is continuously applied to the contact element in contact with the surface of the test piece, and a constant load measurement in which the test piece is moved by applying a constant vertical load to the contact element in advance. It is known. As an apparatus for measuring the frictional resistance or scratch resistance of a test piece by the above-mentioned measuring method, for example, Patent Document 1 is known.
[0004]
[Patent Document 1] Japanese Patent No. 2700997 (FIG. 2).
[0005]
When performing a constant load measurement after performing the continuous load measurement with the above-described device, after hanging the rotating weight on the weight receiver, a vertical weight is placed on the weight by placing a weight having a constant weight on the pan of the measurement element. In addition, the measurement is performed while moving the test piece.
[0006]
Further, there is known an apparatus for continuously moving a rotating weight for performing continuous load measurement and a test table on which a test piece is placed, and simultaneously operating different moving means to measure the continuous load of the test piece (for example, see Patents). Reference 2).
[0007]
[Patent Document 2] Utility Model Registration No. 2063398 (FIG. 1).
[0008]
[Problems to be solved by the invention]
The inventions and devices shown in Patent Documents 1 and 2 can perform continuous load measurement and constant load measurement, respectively. When performing constant load measurement after continuous load measurement, the rotating weight is hooked on the weight receiver. Each time a fixed amount of weight is measured on the tray of the measuring element, the weight is replaced and a different vertical load is applied to the measuring element to perform measurement. Therefore, it takes time and effort to store the rotating weight and exchange the fixed amount of weight, and it takes time to measure and is inefficient.
[0009]
In the constant load measurement, since the same work is performed many times while changing the fixed weight from one to the next, the measurement work is troublesome and inefficient, and the weight of the weight at a certain stage scratches the test piece. Even though the weight was different, since the weights having different weights changed in gram units, it was difficult to perform accurate measurement, for example, it was unclear whether scratching resistance occurred for the first time with the weight.
[0010]
In the apparatus for performing the continuous load measurement and the constant load measurement, the measuring element cannot perform the peeling resistance measurement by reciprocating repeatedly on the same trajectory of the test piece with a constant load, or while reducing the load. In addition, there is a problem that the measurement of the friction of the test piece and the measurement of the wear depth and the wear volume cannot be performed at once.
[0011]
Therefore, the present invention enables measurement and display of the peeling resistance of a test paper by continuous load fluctuation measurement as a friction force, a friction coefficient, a wear depth and a wear volume, and performs conventional continuous load measurement and constant load measurement. It is an object of the present invention to provide a device capable of efficiently obtaining accurate measurement data by a simple operation such as switching of a switch without changing a weight.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, a support column is provided on the upper surface of the base so as to be movable up and down, and a balance arm for measuring friction, abrasion resistance and the like of the test paper is pivotally supported on the support column and pivotally supported. On the upper surface of the base below the load unit attached to one of the arms, a moving table linked to a moving weight attached to the load unit was movably attached and retracted, and attached to a measuring unit provided on the other of the balance arm. A sample table is mounted on the upper surface of the base below the probe in such a way that the sample table can be moved forward and backward, and a displacement gauge provided at the tip of a displacement measuring device in which a shaft is rotatably mounted on the substrate is directly above the probe. Test paper on the sample table is formed so as to be movable, and the displacement gauge of the displacement measuring device is positioned immediately above the tracing stylus, and both the sample table and the moving table are moved simultaneously or one of them is moved forward and backward. Friction , Frictional resistance, characterized by providing such possible measurement and display wear depth and wear volume.
[0013]
Therefore, it is possible to easily measure and display the frictional force, frictional resistance, wear depth, wear volume, and the like by continuous load fluctuation friction / wear measurement, continuous load scratch measurement, constant load measurement, and the like of the test piece.
[0014]
The balance arm according to the second aspect of the present invention is configured such that a load portion is attached to one of the shaft support portions located at the center, and a measurement portion is attached to the other, and the weight of the moving weight of the load portion and the load cell attached to the measurement portion. At least two or more balance arms having different measured value capacities are exchangeably and pivotally supported on the support column. Further, one end of a pair of slide shafts, in which the load portion of the balance arm is positioned in parallel, is fixed to the shaft support portion, and the movable weight is slidably inserted through the slide shaft, and the other end of the slide shaft is slid. A fixed piece is attached to one end, and an adjustment weight for fine adjustment of the balance is screwed onto a screw shaft provided in the other end of the fixed piece in the axial direction of the balance arm, and a guide pulley provided on both sides of the movable weight Is slidably inserted into a guide groove of a guide frame mounted on the moving table, and a moving weight is slidably provided in accordance with the forward / backward movement of the moving table and the vertical movement of the balance arm. Further, the measuring unit of the balance arm attaches one end of a substantially L-shaped measurement substrate to the pivot support, attaches a fixed weight that balances the moving weight to the back surface of the measurement substrate, and attaches the fixed weight to the front surface of the measurement substrate. A load cell and a connector are located on the same axis as the balance arm, and a measuring axis is mounted in a direction perpendicular to the load cell, and the measuring axis can pivot on a fixed frame mounted on the measuring board by pivoting. A measuring element is attached to the tip of this measuring axis so as to be slidable in the vertical direction, a sensing plate is provided at the upper part of the measuring element, and a needle part that slides on the test paper is removable at the lower part. The vibration of the needle part is transmitted to a load cell via a measuring shaft and a connector, and the load cell is provided so as to be displayed by various recording and display devices built in the base. Still further, the displacement measuring device is configured such that one end of an L-shaped support shaft is attached to an upper end of a shaft portion rotatably supported on an upper surface of a base, and a displacement meter attached to the other end of the support shaft. Is formed so as to be detachable from immediately above the tracing stylus by the rotation of the shaft portion, and provided so as to be able to measure and display the displacement of the distance between the lower surface of the displacement gauge and the sensing plate of the tracing stylus as a wear depth and a wear volume. It is characterized by having.
[0015]
Therefore, it is possible to easily switch between continuous load fluctuation friction / wear measurement, continuous load scratch measurement and constant load measurement, and it is not necessary to store a moving weight when switching from continuous load scratch measurement to constant load measurement. At the same time, there is no need to replace the weight at the time of measuring the constant load, and the measurement operation can be improved.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a front view of a measuring device of the present invention, FIG. 2 is a plan view of the measuring device of the present invention, FIG. 3 is a front view of a balance arm, and FIG. FIG. 5 is a partially cutaway side view showing the moving table and the moving direction of the moving weight, FIG. 6 is a sectional view taken along line AA of FIG. 5, and FIG. FIG. 8 is a circuit diagram of a measuring device according to the present invention, FIG. 9 is a plan view of a measuring unit, and FIG. 10 shows a positional relationship between a tracing stylus and a displacement meter. It is a schematic diagram.
[0017]
As shown in FIGS. 1 and 2, the measuring apparatus 10 is provided with a display section 12 for displaying various data on the front of the base 11, and a test support 13 is provided at the center of the upper surface of the base 11 so as to be vertically movable. A shaft support 16 and a balance arm 15 for measuring friction and wear resistance of a piece (not shown) are detachably and pivotably supported. The balance arm 15 has one unit formed by attaching the load unit 18 to one of the shaft supports 16 provided at the center and the measuring unit 50 to the other. The moving table 30 is mounted on the upper surface of the base below the load unit 18 so as to be able to move forward and backward with respect to the shaft support 16, and below the measurement unit 50, a sample table 65 is also mounted on the shaft support 16. It is mounted so that it can move forward and backward.
[0018]
In FIG. 3, the balance arm 15 has at least two or more different weights of the moving weight 25 of the load portion 18 and the measured value capacity of the load cell 53, preferably for low loads (maximum load of 50 g, maximum measurement of the load cell). Value of 0.98N) and two types for high load (maximum load 1000g, maximum measured value of load cell 19.61N) are prepared and provided so as to be arbitrarily replaceable depending on the thickness and strength of the test piece. is there.
[0019]
The load portion 18 of the balance arm 15 fixes a shaft support 16 to one end of a pair of slide shafts 19 positioned in parallel, attaches a fixing piece 20 to the other end of the slide shaft, and attaches a fixing piece 20 to the other end of the fixed piece. The adjustment weight 22 for finely adjusting the balance of the balance arm 15 is screwed into a screw shaft 21 provided in the axial direction of the balance arm 15.
[0020]
As shown in FIGS. 5, 6, and 7, the pair of slide shafts 19 are slidably inserted into a plurality of holes 27 provided in a weight body 26 constituting the moving weight 25, thereby moving the moving weight 25. It can be done smoothly. Furthermore, when the moving weight for high load is slid (for example, the maximum load is 10,000 g), the weight can be dispersed and supported by the plurality of slide shafts 19, so that the moving weight 25 can be slid smoothly.
[0021]
The guide pulleys 28 attached to both sides of the weight body 26 of the movable weight 25 are slidably inserted into guide grooves 43 of a guide frame 42 attached to one end of the movable table 30, so that the movable table 30 It can slide smoothly on the slide shaft 19 in accordance with the forward / backward movement and the vertical movement of the balance arm 15.
[0022]
Guide plates 29 are mounted on both sides of the guide groove 43, respectively, to prevent the guide pulley 28 inserted in the guide groove 43 from rattling and to smoothly slide and prevent the guide pulley 28 from dropping out of the guide groove 43.
[0023]
The moving table 30 is mounted below the load portion 18 so as to be able to advance and retreat in the same direction as the axial direction of the balance arm 15 by a guide rail 30 a provided on the upper surface of the base 11.
[0024]
As shown in FIG. 6, the reciprocating movement of the moving table 30 is performed by meshing a rack 31 attached to the back surface of the moving table 30 with a pinion 33 supported by a tip of a drive shaft 32 located inside the base 11. Operated by
[0025]
As shown in FIG. 7, the rotation of the drive shaft 32 is performed by the reduction gear 38, the pulley 39, and the pulley 34 of the drive shaft interlocked by the belt 40 from the first motor 37 mounted in the base 11. A start position and an end position of the moving table 30 are set by a light shielding plate 35 and an optical sensor 36 attached to the drive shaft 32, and are preferably formed so as to be able to reciprocate or move in one direction within a range of about 1 to 100 mm. The light-shielding plate 35 attached to the drive shaft 32 is provided so as to be interlocked with the optical sensor 36 so as to be able to detect at least three points for detecting the origin, the start position, and the end position.
[0026]
As shown in FIG. 9, the measuring section 50 has one end of a substantially L-shaped measuring board 51 attached to the pivot support section 16, and on the back surface of the measuring board 51, the balance is made with the moving weight 25. A fixed weight 52 having a weight is attached.
[0027]
On the surface of the measurement substrate 51, a load cell (load displacement converter) 53 and a connection connector 55 are located on the same axis as the balance arm 15, and a measurement shaft 56 is mounted in a direction perpendicular to the load cell. The measuring shaft 56 is pivotally supported by a support frame 57 provided at the tip of the measuring substrate 51 so as to be pivotable. A measuring element 60 is attached to the tip of the measuring shaft 56 so as to be slidable in the vertical direction. .
[0028]
As shown in FIG. 10, a sensing plate 61 is attached to the upper part of the tracing stylus 60, and a needle 62 made of a jewel having hardness such as sapphire or diamond is detachably attached to the lower part.
[0029]
The measurement of friction and abrasion by the measuring element 60 detects vibration generated when the needle portion 62 slides on a test piece (not shown) mounted on the sample table 65, and detects the vibration with the measuring shaft 56. The signal is transmitted to the load cell 53 via the connection connector 55, converted into a signal, amplified by various amplifying devices 14 (for example, a dynamic strange amplifier, etc.) built in the base 11, and displayed on the display unit 12. Furthermore, various recording devices can output and display (for example, friction force, friction coefficient, friction depth, friction volume, etc.).
[0030]
The sample table 65 is mounted below the tracing stylus 60 and on the upper surface of the base 11 so as to be able to move forward and backward in the same direction as the moving table 30 by a guide rail 65a. The reciprocating movement of the sample table 65 is caused by the meshing between the rack 66 attached to the back of the moving table similarly to the moving table 30 and the pinion 67 supported by the tip of the drive shaft 68 located inside the base 11. Operate.
[0031]
As shown in FIG. 7, the drive shaft 68 drives a speed reducer 73, a pulley 74, and a pulley 69 of the drive shaft 68 in conjunction with a belt 75 from a second motor 72 mounted in the base 11. The start position and the end position of the sample table 65 are set by a light-shielding plate 70 and an optical sensor 71 attached to a shaft portion of a drive shaft 68, and are preferably formed so as to be reciprocable or one-way within a range of 1 to 100 mm. I have.
[0032]
The light-shielding plate 70 attached to the drive shaft 68 is linked to the optical sensor 71 in the same manner as the drive shaft 32 of the moving table 30, and is attached so as to be able to detect at least three points for origin detection, start position and end position. It is.
[0033]
The feed knob 77 attached to the front of the sample table 65 adjusts the sample table so that it can be moved in the width direction, and uses the unused portion of the test piece by forming the table so that it can be moved in the width direction. It is possible to perform multiple measurements with one test piece. The first and second motors 37 and 72 are operated by linking while controlling a control current by a programmable control device, for example, a sequence 87.
[0034]
The displacement measuring device 80 has an L-shaped support shaft 82 attached to the upper end of a shaft portion 81 rotatably attached to the upper surface of the base 11, and a known displacement meter 83 attached to the tip of the support shaft. is there. By forming the shaft portion 81 to be rotatable, the displacement meter 83 can be detached from immediately above the tracing stylus 60.
[0035]
By displacing the position of the displacement gauge 83 from immediately above the measuring element 60, when exchanging the measuring element 60 and the test piece, the displacement meter 83 does not hinder the exchange operation, and the exchange operation can be performed smoothly and efficiently. It can be carried out.
[0036]
As shown in FIG. 10, the measurement by the displacement measuring device 80 measures the change in the distance (preferably about 5 mm) between the lower surface of the displacement meter 83 and the upper surface of the sensing plate 61 of the tracing stylus 60 as wear depth and wear volume.・ It is to be displayed.
[0037]
FIG. 8 is a circuit diagram of the measuring apparatus 10 according to the present invention. As described above, the first motor 37 for driving the moving table 30 and the second motor 72 for driving the sample table 65 are respectively mounted on the base 11. The first and second motors are transmitted to the pulleys 34 and 69 via separate speed reducers 38 and 73, pulleys 39 and 74, and belts 40 and 75, respectively, to drive the drive shaft 32, Rotate 68.
[0038]
The first and second motors 37 and 72 are controlled by a sequence 87 (program controller), and switch (not shown) for simultaneous continuous reciprocating drive, simultaneous one-way drive, one continuous reciprocal drive, one-way drive and position control, and the like. ) Can be performed.
[0039]
In the sequence 87, in addition to the control of the first and second motors 37 and 72, the sensing of the signal from the tracing stylus 60 and the input of the signal from the displacement meter 83 are input to the display unit 12 or various recording devices as data. The transmission can be recorded.
[0040]
The operation of the embodiment of the present invention will be described. When a continuous load fluctuation friction / wear measurement is performed by the measuring device 10, a test piece to be measured is first placed on the sample table 65.
[0041]
Next, the sample table 65 and the moving table 30 are set at the start positions. At this time, the coaching of the test piece in the plurality of balance arms 15 provided with the weight of the movement / movement 25 of the load portion 18 of the balance arm and the measured value capacity of the load cell attached to the measurement portion 50 different from each other. A balance arm (for example, for low load) having a load weight matched to the thickness and strength of the thin film as a member is set, and the support column 13 is moved up and down to balance according to the thickness of the test piece. The horizontal position of the arm 15 is adjusted.
[0042]
The balance of the balance arm 15 is such that the position of the fixed weight 52 and the moving weight 25 are maintained at the position farthest from the support column 13, and the balance arm 15 is positioned at the tip of the needle portion 62 of the measuring element 60 that contacts the surface of the test piece. Fine adjustment is performed by rotating the adjusting weight 22 so that the applied weight becomes zero.
[0043]
The load weight of the balance arm 15 is arbitrarily determined, but is set to a light weight that does not cause wear marks on the test piece by one-way sliding, and at least the moving table 30 and the sample table 65 reciprocate several to several hundred times. The load weight is set to such a degree as to wear after moving.
[0044]
Next, a start switch (not shown) is turned on to drive the first and second motors 37 and 72 synchronously, and from the drive shafts 32 and 68 via the reduction gears 38 and 73 and the transmission belts 40 and 75, respectively, to the pinion 33. , 67 and the racks 31 and 66, the moving table 30 and the sample table 65 are operated. When the moving table 30 and the guide frame 42 move in the direction of the support column 13, the moving weight 25 is guided by the guide frame 42 and slides on the slide shaft 19 to move in the direction of the support column 13.
[0045]
The moving table 30 and the sample table 65 reciprocate a specified number of times or irregular times at a constant speed at a distance of about 1 to 100 mm, respectively. The load applied to the measuring element 60 due to the reciprocating movement of the moving table 30 and the sample table 65 increases the vertical load on the measuring element 60 together with the moving weight 25 moving the slide shaft 19 over time, and the needle sliding on the test piece. The frictional resistance of the portion 62 increases.
[0046]
The change in the load on the tracing stylus 60 is such that the moving table 25 and the sample table 65 reciprocate several times by setting the moving weight 25 to such a light weight that the test piece is not worn by one sliding operation. This is performed by tracing the vertical load of the tracing stylus 60 on the same locus of the test piece while changing the load.
[0047]
The measurement can measure the friction / wear strength with high accuracy, which is close to the actual use condition of how much frictional force works and how many times the wear starts and becomes severe with such a load.
[0048]
As shown in FIG. 10, the measurement of the wear depth and the wear volume is performed by detecting a change in which the stylus 60 descends when the needle portion 62 of the stylus 60 bites into the test piece due to abrasion with the displacement meter 83. The sensing by the displacement meter 83 is performed by increasing the distance between the sensing plate 61 of the tracing stylus 60 and the displacement meter 83 located immediately above.
[0049]
Therefore, by measuring the fluctuation of the frictional force and the wear resistance of the test piece while continuously changing the moving weight 25, the graph and the numerical values can be obtained at once by three axes of the accurate vertical load, the number of frictions, the frictional force or the wear amount. Friction and wear data can be efficiently measured and displayed in a single experiment. The change of the load in the continuous load fluctuation measurement can be easily performed by moving the adjustment weight, so that the measurement operation can be performed efficiently.
[0050]
Next, in the continuous load measurement, the moving table 30 and the test table 65 are slid on the test piece while changing the weight applied to the tracing stylus 60 during one-way movement from the start position to the end position, and the friction is changed from the wear to the wear. The resulting change is measured as scratch resistance.
[0051]
By switching a switch (not shown), the operation of the moving table 30 and the test table 65 is set to one-way movement in advance, a start switch (not shown) is turned on, and the first and second motors 37 and 72 are synchronously driven. The moving table 30 and the test table 65 are operated from a reduction gear, a pulley, and a drive shaft via a pinion and a rack.
[0052]
The load applied to the needle part 62 of the measuring element 60 is increased by the vertical weight applied to the measuring element 60 together with the moving weight 25 that moves the slide shaft 19 over time, so that the frictional resistance to the needle part 62 sliding on the test piece is increased. Becomes larger.
[0053]
In the movement of the moving table 30 and the sample table 65, while traveling at a constant speed over a distance of about 100 mm, how much frictional force works at what load, and at what load wear starts and becomes severe. The friction / wear scratch resistance can be measured over time.
[0054]
In the friction / wear measurement, the frictional resistance or the abrasion scratching resistance generated when the needle portion 62 moves on the test piece is sensed as vibration, and transmitted from the measuring element 60 to the load cell 53 via the measuring shaft 56 and the connector 55, This signal can be amplified by the amplifier 14 and displayed as a numerical value or a graph as appropriate, and the resistance value can be recorded as necessary.
[0055]
Further, when the needle portion 62 bites into the test piece due to wear, a change in the drop of the tracing stylus 60 is detected by increasing the distance between the sensing plate 61 and the displacement meter 83 located immediately above, and this difference is detected as the wear depth and It can be measured as wear volume.
[0056]
When performing a constant load measurement, the horizontal of the balance arm 15 is adjusted in accordance with the test piece, and the vertical load of the stylus 60 in contact with the test strip is set to 0. By moving the moving weight 25 to a position that matches the fixed weight instead of placing the weight, the fixed weight can be applied to the tracing stylus 60 in the same manner as when the weight is placed.
[0057]
Then, by switching the switch, only the sample table 65 is set to be movable, and while only the sample table 65 is moved one way over a predetermined distance (about 100 mm) at a constant speed, the needle portion 62 attached to the tracing stylus 60 is moved. The frictional resistance sliding on the test piece is sensed as vibration, and the vibration is transmitted to the load cell 53 via the measuring shaft 56 and the connector 55, and converted into a signal by the load cell. By amplifying the data and outputting and displaying the data on various recording devices, it is possible to measure the film unevenness on the painted surface or the decorative plate surface of the test piece.
[0058]
The change of the load applied to the tracing stylus 60 can be easily weighted by sequentially moving the position of the moving weight 25 in the direction of the support column 13, so that the measurement can be performed without replacing the weight or losing the spare weight. Can be performed efficiently.
[0059]
As another measurement method, the sample table 65 on which the test piece is placed is stopped, the position of the moving weight 25 is sequentially moved in the direction of the support column 13, and only the vertical load is gradually applied to the measuring element 60. It is also possible to measure the continuous weighted indentation strength.
[0060]
Further, as shown in FIG. 11, a semi-circular guide rail 90 is attached around the sample table 65 on the upper surface of the base 11 of the measuring device 10, and a CCD camera and illumination are mounted on the guide rail. By mounting the apparatus 91 movably, it is possible to magnify and record the portion where the needle 62 of the tracing stylus 60 is in contact with the test paper.
[0061]
【The invention's effect】
According to the present invention, a wide range of test pieces can be measured by providing a plurality of exchangeable balance arms with different load weights, and the moving table and the sample table can be continuously reciprocated or moved one way by different motors. Furthermore, by enabling switching with a switch, such as driving only one side, and simultaneously measuring the wear displacement with a displacement measuring device attached to the base, continuous load fluctuation friction and wear measurement, continuous load scratch measurement In addition, the present invention has a beneficial effect such that the measurement of friction and wear under a constant load can be performed simply, efficiently and accurately.
Since the movable table and the sample table are formed so as to be reciprocally movable, it is possible to measure the peeling resistance of the test piece, so that accurate data close to an actual use state can be obtained.
By forming the displacement meter movably right above the measuring element, the wear depth, wear volume, etc. can be measured and displayed together with the friction resistance, etc., and by rotating the shaft, the measuring element Since the replacement of the test piece can be easily performed without obstruction, the efficiency of the measurement operation and the accuracy of the test data can be improved.
Since the moving table and the sample table are formed so as to be operable by different driving sources, there is no need to store the moving weight when performing a constant load measurement, and it is not necessary to replace the weight. There is no need to prepare a large number of weights, so that it has an advantageous effect such as being economical.
[Brief description of the drawings]
FIG. 1 is a front view of a measuring device according to the present invention.
FIG. 2 is a plan view of the measuring device according to the present invention.
FIG. 3 is a front view of a balance arm.
FIG. 4 is a partially broken plan view showing a moving weight attached to a load unit.
FIG. 5 is a partially broken side view showing a moving direction of a moving table and a moving weight.
FIG. 6 is a sectional view taken along line AA of FIG. 5;
FIG. 7 is an explanatory diagram showing power transmission means for driving a moving table and a sample table.
FIG. 8 is a circuit diagram of a measuring device according to the present invention.
FIG. 9 is a plan view of a measurement unit.
FIG. 10 is a schematic diagram showing a positional relationship between a tracing stylus and a displacement meter.
FIG. 11 is a plan view showing a state where a photographing device including a CCD camera is mounted on the measuring device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Measuring machine 11 Base 13 Support strut 15 Balance arm 16 Shaft support 18 Load section 19 Slide shaft 21 Screw shaft 22 Adjusting weight 25 Moving weight 28 Guide pulley 30 Moving table 50 Measurement section 53 Load cell 55 Connector 56 Measurement axis 60 Measurement element 65 Sample table 80 Displacement measuring device 83 Displacement meter

Claims (5)

A support column is provided on the upper surface of the base so as to be vertically movable, and a balance arm for measuring friction, abrasion resistance, etc. of the test piece is pivotally supported on the support column, and a load attached to one of the balance arms is provided. A moving table interlocking with a moving weight attached to the load unit is movably mounted on the upper surface of the base below the unit, and the base is mounted below a tracing stylus attached to a measuring unit provided on the other side of the balance arm. On the upper surface of the sample table, a sample table is mounted so as to be able to move forward and backward, and a displacement meter provided at the tip of a displacement measuring device having a shaft portion rotatably mounted on the base is formed so as to be movable directly above the measuring element. By positioning the displacement meter of the displacement measuring instrument directly above the tracing stylus and simultaneously moving, or moving either one of, the sample table and the moving table, the frictional force of the test piece, frictional resistance, wear depth and Wear body Friction and wear measuring device, characterized in that provided such as to be measured and displayed. The balance arm is configured such that a load portion is attached to one of the shaft support portions located at the center, and a measurement portion is attached to the other, and the weight of the moving weight of the load portion differs from the measured value capacity of the load cell attached to the measurement portion. 2. The friction and wear measuring device according to claim 1, wherein the at least two or more balance arms are exchangeably and pivotally supported on the support column. The load portion of the balance arm is configured such that one end of a pair of slide shafts positioned in parallel is fixed to the shaft support portion, and the movable weight is slidably inserted through the slide shaft, and the other end of the slide shaft is A fixed piece is attached, an adjusting weight for fine adjustment of the balance is screwed onto a screw shaft provided at the other end of the fixed piece in the axial direction of the balance arm, and guide pulleys provided on both sides of the moving weight are attached. 2. The moving weight is slidably inserted into a guide groove of a guide frame mounted on the moving table, and a moving weight is slidably provided in accordance with the forward / backward movement of the moving table and the vertical movement of the balance arm. Or the friction and wear measuring device according to 2. The measuring part of the balance arm attaches one end of a substantially L-shaped measurement substrate to the pivot support, attaches a fixed weight to balance the moving weight to the back surface of the measurement substrate, and attaches the fixed weight to the front surface of the measurement substrate. A load cell and a connector are positioned on the same axis as the balance arm, and a measurement axis is mounted in a direction perpendicular to the load cell, and the measurement axis is pivotally supported on a fixed frame mounted on the measurement board by a pivot method. A measuring element is slidably attached to the tip of the measuring shaft in a vertical direction, a sensing plate is provided at an upper part of the measuring element, and a needle part sliding on a test paper is detachably attached at a lower part, The vibration of the needle portion is transmitted to a load cell via a measuring shaft and a connection connector, and is provided so as to be displayed from the load cell by various recording and display devices built in the base. The friction described in 1 And wear measurement device. The displacement measuring device is configured such that one end of an L-shaped support shaft is attached to an upper end of a shaft portion rotatably supported on an upper surface of a base, and a displacement meter attached to the other end of the support shaft is attached to the shaft portion. The measuring element is formed so as to be detachable from immediately above the measuring element by rotation of the measuring element, and a displacement of a distance between a lower surface of the displacement gauge and a sensing plate of the measuring element is provided so as to be measured and displayed as a wear depth and a wear volume. The friction and wear measuring device according to any one of claims 1 to 4, wherein

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