JPS58122413A - Reference gauge for size measurement - Google Patents

Abstract

PURPOSE:To facilitate a read of a measured reference value by detecting the amount of displacement of a block gauge group and generating an electric output corresponding to the amount of displacement, and displaying the amount of displacement digitally. CONSTITUTION:A zero point is set while the end surface of each block gauge 14 in a block gauge group 15 is raised to a prescribed position between gradations 16A on a fixed scale 16. Namely, a plate member 72 and a spherical body 73 are connected together so that the end surface of each block gauge 14 rises by only 1mm. above a corresponding fixed scale gradation 16A. A main switch 53 is turned on and the 1st and the 2nd changeover switches 54 and 55 are placed at an absolute measurement and a calibration side respectively; and the block gauge group 15 is moved up and down through a handle 28 to put a position detecting means 71 the moment the end surface of each block gauge 14 is positioned only 1mm. above the corresponding fixed scale gradation 16A, and consequently a holding state is reset immediately to allow a digital display 52 to start counting.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dimension measuring standard, and more particularly to a dimension measuring standard having a block gauge group, which is an array of block gauges serving as dimension standards.

Conventionally, in order to make the book fully equipped with the characteristic of Block Dage as a dimensional standard and extremely easy to handle, Block Goo 2 groups have been movably supported with respect to the main body frame. A reference device for the dimension +1111i is known, which is formed so that a highly accurate dimension reference value can be obtained on the end face of each block gauge of the group. Among such conventional dimension measurement standards, the one shown in FIG. 1 is common.

That is, in FIG. 1, a drive shaft 2 that supports a person is rotatably but not displaceable in the axial direction, and a screw s2 is attached to the outer periphery of the central axis of the main body frame l, which is approximately circular in shape. There is a micrometer head 3 with a μm scale of 3A.
is fixed, and when the hand L-4 protruding from the micrometer head 3 is operated, the drive shaft 2 is rotated.

A movable body 5 is screwed onto the lower end side of the drive shaft 2 via a threaded portion 2A, and this movable body 5 supports a block gauge group 6 and is movable in the axial direction within the main body frame 1 but is not rotatable. ii.
is configured to be raised and lowered by operating a handle 4.

Further, the end face of each block gauge in the block gauge group 6 is projected outside the main body frame l, and on both sides of the block gauge group 6, there is a space at a predetermined unit interval convenient for reading, for example, at an interval of every 5 cm. An identification scale 7 having seven graduations is provided, and the displacement lid of each block gauge end face from the graduation M7A is rotated by the drive shaft 2 to indicate the noodle indicated by the counter 8 which counts and displays the number of noodles. Furthermore, the readings are made by summing the base 1i of the reference ring 9 indicating the decimal digits with the readings on the μm scale 3A by 19 people.

Therefore, in the conventional dimension measurement reference device, the reference dimension is read by adding up the reading values of the fixed scale 7, the counter 8, and the three μm scales, which is complicated. Moreover, counter 8 and μmth $3
In order to make the value indicated by A reliable, when the scale part 7A of the I/Cd fixed scale 7 and each end face position of the block group 2 group 6 match, the counter 8 and the μm scale 3A
It is necessary to perform so-called zero point setting, which is an adjustment so that the value of It had disadvantages.

In other words, the block gauge group 6 performs the zero-hiro setting.
This is to confirm that each end face of is in the correct position from the surface plate, and that the counter 8 and micrometer head 3 are indicating the correct position.・The first end block of the second group of blocks 6 When the bottom surface of the counter 8 is in contact with the surface plate surface, each digit of the counter 8 becomes zero.
, and it is sufficient if the zero scale of the 30 μm scale 3A of the micrometer head and the base @9A of the base line ring 9 match, but it is practically impossible to bring it into contact with the surface plate surface with a presser. . Therefore, the block gauge group 6 is set in a raised state to a predetermined height between the scale marks m57A.

For example, if you decide to set it at the 11m11 position, place the ITGG reference block gauge in front of the block goo 2 group 6, and place the electric micrometer or high-precision test indicator probe at the height of the 11cm reference block gauge. After zeroing or setting a predetermined area, move the probe to the lO end face of the lowest block, gently rotate the micrometer head 3 and move the movable body 5 until the end face of the lowest block is 11 Set it so that it is at the same height as the standard block gauge of the cabinet.

At this time, each end face of the block group 2 group 6 has a corresponding scale s.
Each scale of 7A does not go up by 1m, but if for some reason the scale is off by about 2 or 3 scales, it must be adjusted using the reference ring 9, and the above operation is very tedious. be.

The object of the present invention is to make it easy to read the constant reference value, and once the zero point is set using the reference block gauge, the user can set the zero point using the reference block gauge each time it is used. There is K, which provides standard instruments for dimension measurement without membership fees.

A displacement detector that generates a displacement detector, and a digital display that digitally displays the amount of displacement based on the electrical output obtained by the displacement detector are provided, and the combination of the conventional counter and the μm scale of the micro head is - By displaying the values digitally, it is easy to read the measurement standard values, and by providing a position detection means to detect whether the block gauge group is at a predetermined position or negative with respect to the fixed scale, By configuring so that when the position detection means is activated by moving the gauge group, the displayed value on the front V digital display is replaced with a preset value, If you set the zero-pickling setting using the , unless the installation location has been changed, re-checking the level can be done by simply moving the block gauge group up and down and activating the noodle detection hand for about 1 inch. 【″.

It is an attempt to achieve a goal.

Hereinafter, embodiments of the present invention will be explained based on the drawings.

2 and 3 show the overall structure of an embodiment of the 1111 dimension standard according to the present invention.

In these figures, a substantially cylindrical main body frame 11 has a wide base s11 formed at its lower part, and a pace part 11A.
Legs 12 with cemented carbide tips are attached to the bottom of the frame, and the main body frame 11 is placed directly on the surface #1.

A movable body 13 is provided in the main body 7 frame 11 so as to be movable and non-rotatable along the longitudinal direction of the main body 7 frame 11 while being guided by a guide rail (not shown). A plurality of blocks 14 and 2 groups 15 are supported along the direction of movement of the blocks. When the end surface of each block gauge 14 of the block gauge group 15 is protruded by a predetermined amount from the main body frame 11, each block a-
The protruding end surfaces of the gauge 14 are connected to the adjacent block gauge 14.
This prevents it from being overlapped and covered by the end face of the Furthermore, fixed scales 16 are provided on the outer surface of the main body frame 11 on both sides of the block gauge group 15.

A fixed scale graduation 16A is engraved on the fixed scale 16, and this graduation 16A is 1 or n times (
n is an integer including 1), and is formed at intervals of a predetermined finer unit size, e.g., 5B, for convenience of reading. The trap is designed to display the height from the surface plate when placed on the surface. At this time, most of the block gauges 14 constituting the second block group 15 are formed to have a dimension of 20 m. This is because when the dimension is set to 100, the number of block gauges 14 increases and the block spacing becomes narrow. It is inconvenient to use and disadvantageous in terms of production costs; if the length is 30 m, it takes time and effort to maintain machining accuracy, and it is disadvantageous in terms of cost; if it is set to any size other than 101III units, it is inconvenient in terms of measurement. For a certain reason, 20 kakus are used and it is good. Further, in this embodiment, the reference scale is 10fi, and therefore, the value of 1=1 is set as the reference scale for the block gauge 14 of 20 strips.

The movable body 13 has a cylindrical shaft 13A at its upper end, and this cylindrical shaft 13A is supported by a support wall 22 provided inside the main body frame 11 via a bearing 21 so as to be movable up and down. The upper end side pressure of the person 1 is formed with a threaded portion 23 that opens at the upper end, and the lower end side of a feed screw 24 is threadedly inserted into this threaded portion 23.

A bearing 25 is rotatably fitted to the upper end of the feed screw 24, and the bearing 25 is fixed through the center of a support plate 26 attached to close the upper end opening of the main body frame 11. The upper end of the feed screw 24 projects upward from the bearing 25, and a 0-rotation head 27 is connected to and fixed to the center of a rotating head 27 having a substantially inverted round tray shape.
A KFi handle 28 is rotatably supported at a predetermined position near the periphery of the upper surface, and when the handle 28 is turned about the center line of the rotary head 27, the movable body 13 and the block goo 2 supported by the movable body 13 are rotated. The group 15 is adapted to be moved perpendicularly to the surface of the surface plate. Here, the threaded portion 23, the feed screw 24, the rotary head 27, and the handle 28 constitute a moving means 19 for moving the movable body 13.

A hollow portion 31 is formed on the upper side of the support wall 22 on the inside side of the main body frame 11, and a predetermined position of the front I-hi feed screw 24 passing through the approximately central position of the hollow portion 31 has an inner periphery. A threaded ring 32 having a threaded portion is screwed onto I#. Is there a small size on the outer periphery of the screw ring 32? - A small disk-shaped engagement member 33 made of a ring bearing or the like is attached, and the lower end surface of the screw ring 32 and the cylindrical portion 13 are connected to each other.
A torsion coil spring 34 is interposed between the upper end surface of A and the feed screw 24 so as to surround the feed screw 24, and the torsion coil spring 34 rotates the torsion ring 32 in a predetermined direction with respect to the cylindrical portion 13A. are encouraged to do so.

A guide parallel to the axial direction of the feed screw 24 is provided on one side of the feed screw 24 in the hollow portion 31 . A guide member 35 having a diameter of 1135A is mounted, and the engagement member 33 is always biased by a threaded coil spring 34 so as to be in slidable contact with the kite surface 35AK. Guide surface 3 of engagement member 33
The screw ring 32, which was rendered unrotatable by contact with the five persons, is urged to rotate in one direction by the torsion coil spring 34 disposed in front of the cylindrical portion 13A, thereby causing the feed screw to rotate. 24 and the front V-threaded portion 23 are configured to eliminate feeding errors caused by a false threaded engagement.

1+, a guide member 35Fi is attached to a mounting base 37KMl via a mounting screw 36, and this mounting base 37 is fixed to the body frame 11 by a fixing screw 38 (see Fig. 4, F).
, an adjustment screw 39 is provided at a predetermined position on the side opposite to the guide surface 35A of the kite member 35 provided on the main body frame IIK.
The tip of the adjusting screw 39 is in contact with the main body frame I.
IK screwed together. The adjustment screw 39 is attached to the main body frame 11
It is designed to be rotated by a screwdriver or the like from the outside side, and the biasing force of the screw coil spring 34 is adjusted by adjusting the abutment position between the tip of the negative-joint screw 39 and the guide member 35. It has become.

A displacement detector 41 is provided inside the front one-turn head 27 . 41 displacement detectors, rotary disk 4 as the main scale that is fixed to the feed screw 24 and rotates
2, an index school 43 fixed on the support plate 26, and nine light-emitting elements 44 and light-receiving elements 45 provided opposite to each other on both sides of the rotary disk 42 and the index scale 43, and a rotary head. The trap is such that the displacement detector 41 generates an electrical output corresponding to the amount of 270 rotations, that is, the amount of displacement of the movable body 13 and the second group of blocks 14 relative to the main body frame 114C.

The electrical output detected by the displacement detector 41 is digitally displayed on a digital display 52 via a signal processing section 51 provided in the hollow part 31. It is a 4-digit display with a minimum absolute display value of zero, exactly a o, o o o, and a maximum absolute display value of 9.999.
m is digitally displayed as the absolute minimum reading. Also,
Near the digital display 52, as shown in FIG.
(hereinafter simply referred to as comparative measurement), a second changeover switch 55 that performs switching between zero setting (calibration) operation and reference value acquisition operation of the digital display 52; Setmethane 5
6 and a preset counter 57 for setting a predetermined value on the digital display 52. These switches 53 to 55, methane 56 and counter 57#
'i, each before! +' is connected to the signal control unit 51 (see Fig. 5 M@), and each switch 53, 54, 55, l button 5
The display state of the digital display 52 changes according to the operating states of the counter 6 and the counter 57.

A cylindrical battery case 61 is provided on the back side of the second block group 15 of the main body frame 11.
A battery 62 as a power source for K11-1 in the main body frame 11 is housed therein, and the battery 62 can be taken in and out by opening a cover 63 attached to the back surface of the main body frame 11.

A position detecting means 71 is provided at the upper part of the battery case 761 of the main body frame 11. The zero position detecting means 71 is provided at the upper part of the battery case 761 of the main body frame 11. As shown in FIG. It has a plate member 72 with 1 serving as an air contact, and a spherical body 73 serving as 2 electrical contacts provided on the main body frame 11@.

The plate member 72 protrudes from the back surface of the movable body 13 by a distance of 79'r. When it is fixed to the movable body 13 via the edge plate 74, it is surprisingly connected to the front V signal processing section 51 at the end 4. On the other hand, the spherical body 73 is fixed to the upper surface of the distal end side of a leaf spring 76 as an elastic member, and the base end of the leaf spring 76 is fixed to the main body frame IIK via an insulating plate 77. Further, the spherical body 73 is electrically connected to the signal processing section 51 via a leaf spring 76.

An enlarged disc-shaped receiving part 78 is provided at a slightly proximal end of the position where the spherical body 73 is fixed on the upper surface of the leaf spring 76, and the L1 distal end side of this receiving part 78 has an L-shape bent downward in the figure. A nine-edge ruby goal 8 is fixed to the tip of the shape adjustment member 81.
2 are in contact.

A fulcrum 81A is located at a predetermined position a near the bending part of the adjustment member 81.
is provided, and the adjustment member 81 is centered around this fulcrum 81A.
is said to be swingable. In addition, a concave portion 81B is formed on the lower surface of the proximal side of the adjustment member 81, and this concave portion 81B
The upper end side of the Ka compression coil spring 83 is inserted. The lower end side of the compression coil spring 83 is supported by the main body frame IIK, and the base end of the sea adjustment member 810 is biased upward in the figure by the compression coil spring 83, and the upper surface side of the base end is made of carbide. 84 is inserted approximately half way, and this carbide 84 is inserted into one
4 is in contact with the tip of an adjustment screw 85. The el screw 85 is fitted into a screw hole 86KIIA provided vertically at a predetermined position of the main body frame 11, and by inserting the tip of a screwdriver or the like from the outside of the main body frame 11 into the screw hole 86. By turning the adjustment screw 85, the base end position of the adjustment member 810 is adjusted, and thereby the vertical position of the ruby ring 82 is also adjusted. When the vertical position of the ruby 82 is adjusted, the vertical position of the tip side of the leaf spring 76 that is in contact with the ruby &- 82 via the receiving part 78 is adjusted, and the vertical position of the spherical body 73 is adjusted. In other words, the arrangement position of the movable body 13 along the moving direction is adjusted.

In the state where the second changeover switch 55 is switched to the calibration switch, as soon as the adjusting screw 85 is adjusted to a predetermined position, the plate member as the first electrical contact is connected to the spherical body 73 as the second electrical contact. 72 comes into contact with each other, the plate member 72, the spherical body 73, and the plate spring 76 cause the front r signal processing section 5 to
1 is formed, and when an electric signal flows through this closed circuit, the value displayed on the digital display 52 is changed to a value preset by the preset counter 57. In this embodiment, it is replaced with 1.000. In other words, an electric signal based on the contact and separation between the plate member 72 of the ordinary detection means 71 and the spherical body 73,
It is detected whether the movable body 13, that is, the block gauge group 15 is in a predetermined position with respect to the surface on which the main body frame 11 is installed, for example, the surface plate surface, and the block gauge group 15 is in a predetermined positional relationship with respect to the frame IIK. When a signal indicating that both contacts are in contact is output, the value displayed on the digital display 52 is replaced with a preset value.

Note that the configuration for setting a predetermined value on the digital display 52 by contacting the plate-shaped body 72 as a first electrical contact and the spherical body 73 as a second electrical contact is as follows. A preset counter 57 is connected to the processing section 51, and a signal is sent in advance to display the value set in the preset counter 57 on the digital display 52 directly or via a memory decoration in the signal processing section 51. The numerical value to be replaced may be stored in the storage decoration of the processing unit 51, but in this case, specialized rewriting of the stored data is required depending on the dimensions of the reference block dage used. .

Next, the operation of this embodiment will be explained.

To set the zero point, the end face of each block gauge 14 of the second block group 15 is set on the fixed scale 16, as in the case of zero point setting with a conventional standard for dimension measurement.
Since it is difficult to completely match the fixed scale graduation 16A, it is necessary to set the zero point by setting the end face of each block gauge 14 to a predetermined position of the fixed scale graduation 16A. , when the end face of each block gauge 14 is to be set at a position raised by 1 cm from the corresponding fixed scale scale 16A, the lowest block gauge 14 of the second block group 15 is at the lO level. If so, prepare a reference block gauge of 110, and use an electric micrometer or a high-precision test indicator to check whether the upper end surface of the lowermost block gauge 14 and the upper end surface of the reference block r-ji of 11. Handle 28 so that they are at the same height
Adjust the position of block gauge group 15 by operating .

In this state, the end face of each block gauge 14 is raised by 1 m above the corresponding fixed scale graduation 16A, and the adjustment screw 84 is adjusted to connect the plate member 72 as the first electrical contact and the second The spherical body 73 serving as an electrical contact should be brought into exact contact with the plate member 7, and if the second group of blocks 15 rises even slightly from this exact contact state, the plate member 7
2 and the spherical body 73 are separated from each other. At this time, if a basic block size of 11 m is used, the preset counter 57ti is set to 1.000.

Once such adjustments are made, the zero point setting can be carried out simply as follows. That is, the power is turned on by the main switch 59, and the first changeover switch 54 is turned on.
is absolute Ill measurement, the second changeover switch 55F1 is operated to the calibration (zero set) side, and the value displayed on the digital display 52 is filtered according to the signal from the preset counter 57.
000111 [Pre-installed and held] Next, when the second block group 15 is moved up and down using the handle 28, the end face of each block scale 14 is positioned above the corresponding fixed scale graduation 16A by 1 dew. The moment before 1 position detection means 71 is activated, and this position detection means 71
The hold state is immediately released and the digital display 52 starts counting.

When reusing a firefly whose power has been turned off (by the main switch 54), the predetermined reference position is mechanically memorized in the position detection means 71 without the need for alignment again using the reference block index. Therefore, from now on, zero point setting is performed simply by operating the second changeover switch 55 to the calibration side and turning the handle 28 to move the block gauge group 15 up and down so that the position detection means 71 is activated. .

After completing the zero setting in this way, switch the $2 selector switch 55 from the calibration side to the reference value acquisition operation side.
Since the reference values for candy pair measurement are sequentially displayed on the digital display 52, it is only necessary to perform the normal reference value acquisition operation from now on.

If you wish to perform a comparative measurement, all you have to do is switch the Ml selector switch 54 to the comparative mode.When you have switched in this way, press the zero set button 56 at the point where you want to perform the comparative measurement, and the display will start. Zero is displayed on the device 52, and the amount of movement from this point is displayed as a value of (+) or #1 (-). 9. It can be used without using the scale graduation 16A of the fixed scale 16.

According to this embodiment, since the sum of the value of the conventional counter and the value of the micrometer head is digitally displayed all at once, it is extremely easy to read the measurement reference value, and there is no risk of misreading. I struggled.

Moreover, once the adjustment screw 84 is adjusted using the standard blockage,
Once the operating position of the position detection means 71 is set by operating the
Block gauge group 1 from K by operating handle 2B
It is only necessary to move the position detecting means 71 up and down to operate the position detecting means 71. Therefore, work efficiency will be improved.

Furthermore, the position detection means 71 has a simple structure and can be provided at low cost, and the operating position can be easily changed using the adjustment screw 84, so that various sizes can be used as the reference blockage, and the reference position can also be changed. You can feed yourself accordingly.

Furthermore, since the first changeover switch 54 is provided in this embodiment, it is necessary to select the comparison fA115p according to the ILK.
-You can also! l, preset counter 57
is provided, the set position of the position detection means 71 can be adjusted by operation Ktlii using the l1m reference block gauge.
ii! Instead, it is also possible to set the position detection means 71 using a reference blockage of a predetermined size that is highly reliable even when dust is stored at the measurement location.

In the above embodiment, various switches 53 to 55, ?, etc. are used for convenience of use. button 56 and preset counter 5
7, etc., but only the necessary ones may be provided, or in some cases, they may not be provided at all.
It is sufficient to have a means for storing a preset value to be displayed on the display 52 and a position detecting means 71. In addition, if it is not provided at all, the moment when the main switch 53 is turned on will be displayed as zero, so before measurement, move the movable body 13 and make sure to pass the contact point of the position detection means 71 once, and the display on the display 52 will be 1#: It is necessary to perform measurement after setting. Furthermore, in the above embodiment, the second changeover switch 55 is operated to set the display value of the digital display 52 to 1.000 in advance and hold it for a month, so that the block gauge $15 changes the fixed scale to the scale 16A. Although the digital display 520 is set to start counting from the moment the digital display is positioned 1 m above, it does not necessarily have to be held when the position detecting means 71 outputs the detection signal. Alternatively, the count value from the displacement detector 41 may be added to a preset stored value and displayed.

Further, in the above embodiment, the position IIF of the spherical body 73 is
Although it is assumed that the position is adjusted by the i1111 adjustment screw 84, the position does not necessarily have to be adjusted, and it may be fixed in advance at a predetermined reference position.

Moreover, the first electric power I! of the position detection means 71! A is the plate member 72
For example, the second electrical contact is shaped like a spherical body 73, but it is limited to such a shape.For example, the first electrical contact is a needle-shaped member, and the second electrical contact The receiving portion 7 of the leaf spring 76 may be made of a plate-like member.
8 and the ruby 82 of the adjusting member 81 may be made of a conductive material, and these may constitute the first and second electrical contacts.

Furthermore, the position detection means 71 detects that the block gauge group 15 is at a predetermined position with respect to the fixed scale 6 16 by an electric signal based on the contact and separation of the first gas contact immersion and the second electric contact contact. There have been a few so-called touch sensor-type stutters that detect whether or not the stutter is present. Furthermore, it is not necessary to insulate the sanction body 72 with the insulating plate 74, and the movable body 13 as a whole may have a potential, but it is better to insulate it.

Moreover, although the block gauges 14 of the block gauge group 15 were arranged perpendicularly to the surface plate surface, they may be arranged along the horizontal direction.

Further, although the displacement detector 41Fi is of a photoelectric type, it may also be of a magnetic type.

Furthermore, in the previous V embodiment, the reference scale of the fixed scale 16 is 1.
00 interval, but when this is set to 20 square units, which is the dimension (standard dimension) of the block gauge 15A (when n = 1), the digital display 52 is set to 5 digits, and the maximum absolute display value is set to 5 digits. 19999 m, and when this value is exceeded, that is, for each standard scale, the display may be updated again from o, o o o, and it is possible to easily update the display for each prohibited predetermined unit, that is, for each basic scale. This is because the digital display 52 uses TFI-like signals. Furthermore, the display on the digital display 52 is not limited to the square display, but may also be the inch display.

As described above, according to the present invention, it is easy to read the measurement reference value, and once the zero point is set using the base single block gauge, the edge can be set using the reference block gauge each time it is used. Therefore, it is possible to provide a reference device for dimension measurement that does not require zero point setting.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional right side view showing the configuration of a conventional dimension measurement reference device, Fig. 4 is a sectional view taken along the line IV-IV in Fig. 3, and Fig. 5 is a position detection in the above embodiment. It is a perspective view showing the composition of a means. 11... Main body frame, 13... Movable body, 14...
・Blockage, 15...Blockage group, 16
-...Fixed scale, 16A...Fixed scale scale,
19...Moving means, 27... Rotating head, 41...
- Displacement detector, 51... Signal processing unit, 52... Digital display, 53... Main switch, 54... First changeover switch, 55... Second changeover switch, 5
6... Zero set methane, 57... Preset counter, 71... Position detection means, 72... Plate member as first electric contact, 73... Spherical body as second electrical contact, 76 ...Plate spring as an elastic member, 81...-
Adjustment member, 84...adjustment screw. Agent Patent Attorney Kinoshita Kaizo

Claims (1)

[Claims] +11 A main body frame, a movable body movably provided on the main body frame, and a moving means for moving the movable body,
- or n times ( n
is an integer including 1) and has at least a reference scale set at an interval of 1 and a fixed scale provided on the main body frame;
A displacement detector detects the amount of movement displacement of the second group of blocks and generates an electrical output corresponding to this amount of movement displacement; It has a digital display for displaying information, and a position detection means for detecting whether or not the second group of blocks is in a predetermined position with respect to the main body frame, and the digital display is activated by the operation of the position detection means. 1. A dimension measurement standard, characterized in that the displayed value can be replaced with a preset numerical value. (In Clause 1 of the 214I claim, the digital display has a minimum absolute display value of zero and a maximum absolute display value of the value obtained by subtracting the minimum absolute reading value from the reference scale amount dimension of the first fixed scale. , the minimum absolute reading value. (3) In claim 2, block goo 2
The blockages that make up the group are at least 20
The digital display has a reference scale of 10 dew and a maximum absolute display value of 9.999 w.
x and the minimum absolute reading is 0.001 m
A reference device for dimension measurement characterized by the following. (4) *IF In any of claims 1 to 3, the front first position detection means includes a first electrical contact provided on the movable body side and a second electrical contact provided on the main body frame side. A dimension measurement standard characterized by being configured such that contact and separation with a contact point due to movement of the movable body is detected as an electrical signal. (5) In claim 4, the first electrical contact is formed by the plate member, and the second electrical contact is provided on the distal end side of the elastic member whose base end is identified with the main body frame. It is formed by nine spheres f4! A reference device for measuring dimensions of mold. (6) In claim 5, it is stated that the second position 1c' in front of the air contactle in the direction of movement of the movable body is made WII41I possible from the outside of the main body frame.
A reference device for measuring dimensions.