JPH0861903A - Multiple-point screw hight simultaneous measuring instrument - Google Patents

Abstract

PURPOSE: To simultaneously and accurately measure the heights of screws from the reference planes of the screw with the heads protruded on the reference planes by using one unit. CONSTITUTION: Measuring parts consisting of linear gages 24, 25 and reference plane sleeves 14, 15 are provided corresponding to screws 2, 3, respectively. The measuring parts are supported by a supporting part 9 at positios corresponding to the mounting positions of the screws 2, 3. The supporting part 9 is moved parallel in the vertical direction relative to reference planes 1a, 1b by a slide cylinder 8. The measuring parts and the supporting part 9 are connected together via connections which consist of chuck hole sockets 20, 21, recesses 16, 17, springs 18, 19 and bushes 12, 13 to keep connection between the supporting part 9 and the measuring parts in a fixed condition until the measuring parts are put into contact with the reference planes 1a, 1b and the corresponding screw heads 2a, 3a and to release it from the fixed position for allowing the movement of the supporting part 9 after the measuring parts are put into contact therewith.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipoint simultaneous screw height measuring instrument, and more particularly to a screw height measuring instrument for measuring the screw height from a reference plane of a screw whose head protrudes above the reference plane. Therefore, the present invention relates to a multi-point simultaneous screw height measuring instrument that accurately measures the screw heights of a plurality of screws at the same time.

[0002]

2. Description of the Related Art Conventionally, in measuring the screw height from a reference surface of a plurality of screws whose heads protrude above the reference surface,
As shown in FIG. 3, for each screw, a screw height measuring tool 100,
101, using the screw heights H ₁ and H of the screws 2 and 3, respectively.
I tried to measure ₂ accurately at the same time.

Here, each screw height measuring tool 100, 1
Reference numeral 01 indicates linear gauges 24, 25 having measuring terminals 24c, 25c capable of contacting the crowns 2a, 3a of the screws, and reference surface sleeves 14, 15 capable of contacting the reference surfaces 1a, 1b of the work 1. It has a measuring unit. The reference surface sleeves 14 and 15 have rear end portions 14b and 15b having a small diameter, and the rear end portions 14b and 15b are connected to the through holes 10 and 1 of the supporting portions 9 and 9.
1, and the chuck hole sockets 20 and 21 are screwed into the female screws 14e and 15e on the inner peripheral surfaces of the reference surface sleeves 14 and 15, respectively, and the stepped portions 14c and 15 of the reference surface sleeves 14 and 15 are inserted.
c and the flanges 20b of the chuck hole sockets 20 and 21,
The reference surface sleeves 14 and 15 are fixed to the support portions 9 and 9 by sandwiching the support portions 9 and 9 with 21b. The linear gauge 24, with the measuring terminals 24c and 25c at the top,
By inserting 25 into the chuck hole sockets 20 and 21, and tightening the chuck hole sockets 20 and 21 with lock nuts 22 and 23, the linear gauges 24 and 25 are attached to the supporting portions 9 and 9 via the chuck hole sockets 20 and 21. Fixed. The support parts 9, 9 are fixed to the reference plane 1 by slide cylinders 8, 8 fixed on the equipment base plates 7, 7.
It is translated in a direction perpendicular to a and 1b.

A screw height measuring instrument 1 constructed as described above
The operation of 00 and 101 will be described. When the support portions 9 and 9 are brought closer to the work 1 by the slide cylinders 8 and 8, first, the measurement terminals 24c and 25c are screw heads 2a and 3 respectively.
Then, the reference surface sleeves 14 and 15 are brought into contact with the reference surfaces 1a and 1b while the contact state is maintained. The measurement terminals 24c and 25c are the main body portions (fixed portions) 24a and 25a of the linear gauges 24 and 25 from the contact with the screw heads 2a and 3a until the reference surface sleeves 14 and 15 contact the reference surfaces 1a and 1b. The amount of movement is measured as the screw heights H ₁ and H ₂ from the reference surfaces 1a and 1b to the screw crowns 2a and 3a.

[0005]

As described above, conventionally, when measuring the screw height from the reference surface of a plurality of screws whose heads protrude above the reference surface, a screw height measuring tool is provided for each screw. Since the screw height is measured by using it, a large installation space is required and the cost is high.

The present invention is capable of accurately measuring a plurality of screw heights at the same time with a single screw height measuring tool, and can reduce the space and cost, thereby simultaneously measuring the screw heights at multiple points. The purpose is to provide ingredients.

[0007]

For the above-mentioned purpose, the method according to claim 1
The multi-point simultaneous screw height measuring tool is a multi-point simultaneous screw height measuring tool for simultaneously measuring screw heights from the reference surface of a plurality of screws having heads protruding on the reference surface, Is a plurality of measurement units that measure the screw height of the corresponding screws, a support unit that supports the plurality of measurement units at positions corresponding to the mounting positions of the plurality of screws, and the support unit, the reference. A driving unit that translates in a direction perpendicular to a surface, and a connecting unit that connects the measuring unit and the supporting unit, until the measuring unit abuts the corresponding reference surface and the screw head top. Includes a connecting portion that maintains the connection between the support portion and the measurement portion in a fixed state, and releases the fixed state after the contact to allow the movement of the support portion.

A multipoint simultaneous screw height measuring tool according to a second aspect of the present invention is the multipoint simultaneous screw height measuring instrument according to the first aspect, in which the measuring portion can contact the screw head top portion. A linear gauge having a terminal, and a reference surface sleeve capable of abutting on the reference surface, the connecting portion having a through hole formed in the support portion, and the reference surface provided with the through hole. A bush that allows the sleeve to slide in the moving direction of the support portion, a flange that is provided on the rear end side of the reference surface sleeve and that is located on the rear surface side of the support portion, the front surface of the support portion, and the reference surface. A recess formed by the outer peripheral surface of the sleeve,
A spring disposed in the concave portion and pressing the supporting portion against the flange.

[0009]

In the multipoint simultaneous screw height measuring tool according to the first aspect of the present invention, an undesired step is formed on the reference surface that should be flush with one another, and a plurality of screw heads are formed on the reference surface. Is projected, or when the heads of a plurality of screws are projected on a reference surface having a step in advance, if any of the measurement parts comes into contact with the reference surface and the corresponding screw head top, The connecting portion that connects the measuring unit and the supporting unit operates so as to release the fixed state between the supporting unit and the measuring unit and allow the moving of the supporting unit. Therefore, the support portion can continue to move even after the contact, and the other measurement portion in a fixed state with this support portion moves along with the movement of the support portion, and the screw height of the corresponding screw is increased. Can be measured. After that, when any one of the moving measurement units comes into contact with the reference surface and the corresponding screw crown, the connection unit operates in the same manner as the connection unit, and the remaining measurement units continue to move, The screw height of the corresponding screw can be measured.

As described above, when an undesired step is formed on the reference surface which should be flush with one another, and the heads of a plurality of screws are projected on the reference surface, or when a reference step having a step is formed in advance. Even if the heads of multiple screws are protruding on the surface, the screw height of multiple screws can be accurately measured at the same time with one screw height measuring tool, saving space. Therefore, the cost can be reduced.

[0011]

An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a multipoint simultaneous screw height measuring tool according to one embodiment and a usage state thereof.

In FIGS. 1 and 2, reference numeral 1 represents a work. From the one end surface side of the work 1, a plurality of screws 2,
3 (two in this embodiment) are fastened via washers 4 and 5, respectively. The screws 2 and 3
The work end surfaces 1a and 1b to which is tightened are the reference surfaces in the present invention.

Multipoint simultaneous screw height measuring tool 1 according to this embodiment
No. 00 is not limited to the case where the workpiece end surfaces (reference surfaces) 1a and 1b are flush with the mounting positions of all the screws 2 and 3, and as is clear from FIGS. ，
When there is a parallel displacement due to the mounting position of the screw 3, or when the displacement is set in advance on the workpiece end faces 1a, 1b themselves, the workpiece end faces 1a, 1 of the screws 2, 3 are
The screw heights H ₁ and H ₂ from b are accurately measured simultaneously with one unit.

The multipoint simultaneous screw height measuring tool 100 comprises a slide cylinder (driving section) 8 fixed on the equipment base plate 7. The slide cylinder 8 is installed so that its movable portion 8a can move in a direction perpendicular to the reference planes 1a and 1b, and a support member (support portion) 9 is fixed to the movable portion 8a. . A plurality of through holes 10, 11 are formed in the support portion 9, and each through hole 10, 1
Bushings 12 and 13 are provided in the first unit.

The bushes 12 and 13 move toward the screws 2 and 3 as the support 9 moves, and the tips 14 are moved.
The small-diameter rear end portions 14b and 15b of the reference surface sleeves 14 and 15 whose a and 15a contact the work end surfaces 1a and 1b are slidably inserted in the direction perpendicular to the work end surfaces 1a and 1b. Step portions 14c, 1 of the reference surface sleeves 14, 15
5c, the outer peripheral surfaces 14d and 15d of the rear end portions 14b and 15b, and the front surface 9a of the support portion 9, annular recesses 16 and 17
Springs 18 and 19 are arranged in the. Female threads 14e and 15e are formed on the inner peripheral surfaces of the rear end portions 14b and 15b of the reference surface sleeves 14 and 15, and the female threads 14e and 15e are attached to the male threads 20a of the chuck hole sockets 20 and 21, respectively. 21a is screwed to form the reference surface sleeve 1
4, 15 and chuck hole sockets 20, 21 are integrated. The flange 20 is provided on the rear side of the male screws 20a and 21a.
b, 21b are formed on the flanges 20b, 2
In a steady state, 1b is pressed against the rear surface 9b of the support portion 9 by the pressing force of the springs 18 and 19, and keeps the connection between the support portion 9 and the reference surface sleeves 14 and 15 fixed so that the reference surface sleeves 14 and 15 are It is movable together with the support portion 9. A male screw 20 is provided on the rear side of the flanges 20b and 21b.
c, 21c are formed, and the male screws 20c, 21c are formed.
Lock nuts 22 and 23 are screwed to c, and main body portions (fixed portions) 24 of the linear gauges 24 and 25 inserted into the through holes 20d and 21d of the chuck hole sockets 20 and 21.
The linear gauges 24 and 25 can be moved together with the support portion 9 by firmly gripping a and 25a. Linear gauge 2
4, 25 move toward the screws 2 and 3 as the support part 9 moves, the tips 24b and 25b contact the crowns 2a and 3a of the screws 2 and 3, and the screw height H ₁ , It has measuring terminals 24c and 25c that penetrate only H _{2 into the} main body portions 24a and 25a. In addition, the linear gauges 24 and 25 and the reference surface sleeves 14 and 15 constitute a measuring unit according to the present invention, and the through holes 10 and 11, the bushes 12 and 13, the flanges 20b and 21b, the recesses 16 and 17 of the supporting unit 9 and Spring 18,
Reference numeral 19 constitutes the connecting portion referred to in the present invention.

Next, the operation of the multipoint simultaneous screw height measuring instrument 100 having the above construction will be described.

When the supporting portion 9 is brought closer to the work 1 by the slide cylinder 8, the tip 24b of the measuring terminal 24c of the linear gauge 24 of the measuring portion on the upper side of the drawing makes the screw head top portion 2a.
The measurement terminal 24c enters the main body 24a while maintaining this contact state. When the tip end 14a of the reference surface sleeve 14 comes into contact with the work end surface 1a, the reference surface sleeve 14 cannot move thereafter, and the main body 2
Since 4a also stops moving, the measuring terminal 24c ends its movement (FIG. 1 shows the state at this time). The amount of movement of the measuring terminal 24c at this time is measured as the screw height H ₁ from the reference surface 1a to the screw crown 2a.

After that, since the supporting portion 9 can approach the work 1 against the pressing force of the spring 18, the tip 25b of the measuring terminal 25c of the linear gauge 25 in the lower portion of the drawing is screw top portion 3a. The measurement terminal 25c enters the main body 25a while maintaining this contact state. Then, when the tip end 15a of the reference surface sleeve 15 comes into contact with the workpiece end surface 1b, the reference surface sleeve 15 cannot move thereafter, and the main body portion 25a also stops moving, so that the measurement terminal 25c ends the movement (FIG. 2 shows , Represents the state at this time.) Measurement terminal 25c at this time
Is measured as the screw height H ₂ from the reference surface 1b to the screw crown 3a.

As described above, according to this embodiment,
Work end surface (reference surface) 1a, 1b is all screws 2, 3
Not only when it is flush with the mounting position of the workpiece, but also when parallel displacement occurs due to the mounting positions of the screws 2 and 3, or when the workpiece end surfaces 1a and 1b themselves are preset with the displacement. In such a case, the screw height H ₁ of the screws 2 and 3 from the work end surfaces 1a and 1b can be measured accurately at the same time with one machine, so that a small space and a low cost can be achieved. become able to.

[Brief description of drawings]

FIG. 1 is a cross-sectional view corresponding to the first half of the configuration and operation of a multipoint simultaneous screw height measuring instrument according to an embodiment.

FIG. 2 is a sectional view corresponding to the latter half of the operation of the measuring tool.

FIG. 3 is a diagram for explaining the configuration and operation of a conventional screw height measuring tool.

[Explanation of symbols]

1a, 1b Reference surface 2,3 Screw 2a, 3a Top part 8 Slide cylinder 9 Support part 9a Front surface 9b Rear surface 10,11 Through hole 12,13 Bushing 14,15 Reference surface sleeve 14d, 15d Outer peripheral surface 16,17 Recessed portion 18, 19 spring 20b, 21b flanges 24,25 linear gauge 24c, 25c measurement terminal 100 simultaneous multipoint thread height measuring instrument H _1, H ₂ thread height

Claims (2)

[Claims] 1. A multipoint simultaneous screw height measuring tool for simultaneously measuring screw heights of a plurality of screws having heads protruding from the reference plane from the reference plane, each of which has a screw of a corresponding screw. A plurality of measuring units that measure height, a supporting unit that supports the plurality of measuring units at positions corresponding to the mounting positions of the plurality of screws, and the supporting unit in a direction perpendicular to the reference plane. A driving unit that moves in parallel, and a connecting unit that connects the measuring unit and the supporting unit, until the measuring unit abuts the reference surface and the corresponding screw crown, the supporting unit and the measuring unit. A multi-point simultaneous screw height measuring tool, comprising: a connecting portion that maintains a fixed state of connection with and that releases the fixed state after the contact and allows the support portion to move. 2. The measuring section includes a linear gauge having a measuring terminal capable of abutting on the screw crown, and a reference surface sleeve capable of abutting on the reference surface, and the connecting section has the supporting section. A through hole formed in the base portion, a bush disposed in the through hole for allowing the reference surface sleeve to slide in the moving direction of the support portion, and a bush provided on the rear end side of the reference surface sleeve, A flange located on the rear surface side of the supporting portion, a concave portion formed by the front surface of the supporting portion and the outer peripheral surface of the reference surface sleeve, and a spring arranged in the concave portion and pressing the supporting portion against the flange. The multi-point simultaneous screw height measuring tool according to claim 1, further comprising: