Gear ring M value measuring instrument

Abstract

The application discloses a gear ring M value measuring instrument, which comprises a measuring table, a mounting cavity arranged in the measuring table and an elastic device; a movable measuring head seat and a fixed measuring head seat are arranged in the mounting cavity; and the elastic device is used for driving the movable measuring head seat to move towards or away from the fixed measuring head seat. The gear ring M value measuring instrument only needs to rotate a wrench disc to drive the movable measuring head to move, so that the measurement is convenient and is not affected by manpower. The gear ring M value measuring instrument can not only realize the adjustment of the measurement size, but also realize the adjustment of the measurement direction, so that the same set of measuring instruments can measure both the internal gear and the external gear.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of measurement, and particularly relates to a gear ring M value measuring instrument. BACKGROUND

[0002] The common gear and gear ring M value measuring instruments on the market have certain limitations, for example, the adjustable range of the M value measured by the measuring instrument is small, gears with various parameters cannot be used universally, the high and low sections of the M value measurement cannot be adjusted, and internal and external gears cannot be measured on the same set of measuring instruments. SUMMARY

[0003] The present application aims to provide a gear ring M value measuring instrument that can solve the limitations of the background art and increase measurement efficiency and reduce use cost.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A gear ring M value measuring instrument, comprising:

[0006] A measuring table, an installation cavity is arranged inside the measuring table, a connecting hole in communication with the installation cavity is arranged on the side wall of the measuring table, a micrometer is installed on the connecting hole, and the dial head of the micrometer is located in the installation cavity;

[0007] A top plate, the top plate is fixed on the upper side of the installation cavity, and a sliding groove is arranged on the top plate;

[0008] Two fixed shafts, the two fixed shafts are parallel and are both fixed in the installation cavity;

[0009] A movable measuring head seat, two sliding holes are arranged on the movable measuring head seat, the two fixed shafts pass through the two sliding holes respectively, a movable measuring rod passing through the sliding groove is fixed on the measuring head seat, a movable measuring head is fixed on the movable measuring rod, a table joint is arranged on the movable measuring head seat, the table joint is in contact with the dial head of the micrometer (the self-elastic force of the micrometer can keep the tip of the micrometer in contact with the table joint), and the movable measuring rod and the movable measuring head seat are connected in sliding fit;

[0010] A fixed measuring head seat, the fixed measuring head seat is fixed on the top plate, a fixed measuring rod is fixed on the fixed measuring head seat, and a fixed measuring head is fixed on the fixed measuring rod; the fixed measuring head seat is fixed on the top plate through bolts, the position of the fixed measuring head seat is adjustable, and the fixed measuring rod and the fixed measuring head seat are connected in sliding fit;

[0011] The wrench disc is in transmission connection with the rotating sliding groove, and the wrench disc rotates along its own axis in the rotating sliding groove; the wrench disc is provided with a driving groove; the axis of the wrench disc is provided with a rotating shaft which is fixed in the rotating sliding groove, and the tip of the rotating sliding groove near the driving groove is smoothed, so that the movement displacement of the moving probe holder is enlarged;

[0012] The adjusting block is provided with an adjusting hole through which the fixed shaft near the wrench disc passes, and the adjusting block is arranged on the side of the moving probe holder away from the micrometer; the adjusting block is fixed with an adjusting column which is inserted into the driving groove;

[0013] The elastic device has a tendency to drive the moving probe holder to move towards or away from the fixed probe holder.

[0014] In the technical scheme, further, the wrench disc is fixed with a wrench rod which is located outside the measuring table.

[0015] Further, the elastic device comprises an elastic torsion spring, a spring clamp and a fixed wheel; the elastic torsion spring comprises a first connecting end and a second connecting end; the fixed wheel is fixed on the measuring table and is provided with a connecting shaft; the spring clamp is fixed on the moving probe holder; the elastic torsion spring is sleeved on the connecting shaft; the fixed wheel is provided with a first through hole; the spring clamp is provided with a second through hole; the first connecting end is inserted into the first through hole; and the second connecting end is inserted into the second through hole.

[0016] Further, the fixed wheel is rotated to drive the first connecting end to move, so that the elastic torsion spring has a tendency to drive the moving probe holder to move towards or away from the fixed probe holder, and the fixed wheel is fixed on the measuring table.

[0017] Further, the size of the driving groove is larger than that of the adjusting column, so that the adjusting column can freely move in the driving groove when the moving probe holder moves.

[0018] Further, the gear ring M value measuring instrument can be used to measure an internal gear or an external gear; when the gear ring M value measuring instrument is used to measure an internal gear, the ball heads of the moving probe and the fixed probe are arranged in opposite directions, the elastic device is adjusted to have a tendency to drive the moving probe to move away from the fixed probe; then, the wrench rod is turned to move the moving probe towards the fixed probe, the part to be measured is put in, and then the wrench rod is released, so that the elastic device drives the moving probe to move in the opposite direction of the fixed probe, and the measurement is completed.

[0019] The outer gear is measured by using the gear ring M value measuring instrument, and the specific method is as follows: first, the directions of the ball heads of the moving measuring head and the fixed measuring head are pointed to the center, and the elastic device is adjusted to have a tendency of driving the moving measuring head to move towards the fixed measuring head; then, the wrench rod is turned to move the moving measuring head to the opposite direction of the fixed measuring head, the part to be measured is put in, and then the wrench rod is released, the elastic device drives the moving measuring head to move towards the fixed measuring head, and the measurement is completed.

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] (1) Only the wrench disc needs to be rotated to drive the moving measuring head to move, the measurement is convenient, and is not affected by human force;

[0022] (2) When the moving measuring head seat is forced to move, the second connecting end will be forced to bend; when the force on the moving measuring head seat disappears, the second connecting end resets, thereby driving the moving measuring head seat to return to the original position, and the elastic device can ensure that the moving measuring head is in close contact with the workpiece during measurement;

[0023] (3) The ground clearance of the moving measuring head and the fixed measuring head can be adjusted by the sliding fit of the respective measuring rods and the measuring head seats;

[0024] (4) The elastic torsion spring can not only realize the adjustment of the measurement size, but also realize the adjustment of the measurement direction, so that the same set of measuring instruments can measure both internal gear and external gear;

[0025] (5) By adjusting the position of the fixed measuring head seat, the fixed measuring rod can slide in the sliding groove of the top plate to adjust, so that the measuring instrument has a large stroke adjustment range. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the gear ring M value measuring instrument of the present application;

[0027] Figure 2 It is a top view of Figure 1 ;

[0028] Figure 3 It is a sectional view of Figure 2 A-A;

[0029] Figure 4 It is a schematic diagram of the internal structure of the gear ring M value measuring instrument;

[0030] Figure 5 It is a structural schematic diagram of another angle; Figure 4

[0031] It is a partial enlarged view of I in Figure 6 ; Figure 5

[0032] ​Figure 7 Structure diagram of the elastic torsion spring.

[0033] In the figure: 1, measuring table; 2, installation cavity; 3, connecting hole; 4, micrometer; 5, top plate; 6, sliding groove; 7, fixed shaft; 8, moving measuring head base; 9, moving measuring rod; 10, moving measuring head; 11, table joint; 12, fixed measuring head base; 13, fixed measuring rod; 14, fixed measuring head; 15, wrench disc; 16, rotating sliding groove; 17, driving groove; 18, adjusting block; 19, adjusting column; 20, wrench rod; 21, elastic torsion spring; 22, spring clamp; 23, fixed wheel; 24, first connecting end; 25, second connecting end; 26, connecting shaft; 27, first perforation; 28, second perforation; 29, fixed groove. DETAILED DESCRIPTION

[0034] As Figures 1-3 A gear ring M value measuring instrument is provided by the embodiment of the application. The gear ring M value measuring instrument comprises:

[0035] A measuring table 1 is internally provided with an installation cavity 2, and a connecting hole 3 in communication with the installation cavity 2 is arranged on the side wall of the measuring table 1, and a micrometer 4 is mounted on the connecting hole 3, and the head of the micrometer 4 is located in the installation cavity 2;

[0036] A top plate 5 is fixed on the upper side of the installation cavity 2, and the top plate 5 is provided with a sliding groove 6;

[0037] Two fixed shafts 7 are parallel to each other and are both fixed in the installation cavity 2;

[0038] A moving measuring head base 8 is provided with two sliding holes, and the two fixed shafts 7 pass through the two sliding holes respectively, the moving measuring head base 8 is fixed with a moving measuring rod 9 passing through the sliding groove 6, the moving measuring rod 9 is fixed with a moving measuring head 10, the moving measuring head base 8 is provided with a table joint 11, and the table joint 11 is in contact with the head of the micrometer 4 (the self-elastic force of the micrometer 4 can make the tip thereof always in contact with the table joint 11); the moving measuring rod 9 and the moving measuring head base 8 are connected in sliding fit;

[0039] A fixed measuring head base 12 is fixed on the top plate 5, the fixed measuring head base 12 is fixed with a fixed measuring rod 13, and the fixed measuring rod 13 is fixed with a fixed measuring head 14; the fixed measuring head base 12 is fixed on the top plate 5 by bolts, the position of the fixed measuring head base 12 is adjustable, and the fixed measuring rod 13 and the fixed measuring head base 12 are connected in sliding fit;

[0040] The wrench disc 15 is in transmission connection with the rotating sliding groove 16, and the wrench disc 15 is provided with a driving groove 17; the rotating shaft of the wrench disc 15 is fixed in the rotating sliding groove 16, and the tip position of the rotating sliding groove 16 near the side of the driving groove 17 is smoothed, so as to expand the movement displacement of the moving probe holder 8;

[0041] The adjusting block 18 is provided with an adjusting hole, and the fixed shaft 7 near the wrench disc 15 passes through the adjusting hole; the adjusting block 18 is arranged on the side of the moving probe holder 8 away from the dial gauge 4, and the adjusting block 18 is fixed with an adjusting column 19 which is inserted into the driving groove 17; the size of the driving groove 17 is greater than that of the adjusting column 19, so that the adjusting column 19 can move freely in the driving groove 17 when the moving probe holder 8 moves;

[0042] The elastic device has a tendency to drive the moving probe holder 8 to move towards the fixed probe holder 12.

[0043] When measurement is needed, one hand rotates the wrench disc 15, and in the process of rotating the wrench disc 15, the driving groove 17 can move relative to the adjusting column 19, so as to drive the adjusting block 18 to move towards the dial gauge 4 side, and the adjusting block 18 drives the moving probe holder 8 to move towards the dial gauge 4 side, and the meter connector 11 on the moving probe holder 8 compresses the probe head of the dial gauge 4; at this time, the other hand places the workpiece between the fixed probe 14 and the moving probe 10, and then releases the wrench disc 15, and the elastic device drives the moving probe holder 8 to move towards the fixed probe holder 12, so that the moving probe 10 contacts the workpiece, and the measurement is completed. In the measurement process, only the wrench disc 15 needs to be rotated to drive the moving probe 10 to move, and the workpiece can be held by one hand and the moving probe 10 can be controlled to move by the other hand, so that the measurement is convenient.

[0044] As shown in Figure 1 , the wrench disc 15 is fixed with a wrench rod 20, and the wrench rod 20 is located outside the measuring table 1, so that the rotation of the wrench disc 15 can be controlled through the wrench rod 20, and the rotation is more convenient.

[0045] As shown in Figures 4-6 , the elastic device includes an elastic torsion spring 21, a spring clamp 22 and a fixed wheel 23, the elastic torsion spring 21 includes a first connecting end 24 and a second connecting end 25 (as Figure 7The first connecting end 24 is parallel to the axis of the elastic torsion spring 21, the second connecting end 25 is perpendicular to the axis of the elastic torsion spring 21, the fixed wheel 23 is fixed on the fixed groove 29 of the measuring table 1, the fixed wheel 23 is provided with a connecting shaft 26, the spring clamp 22 is fixed on the movable measuring head seat 8, the elastic torsion spring 21 is sleeved on the connecting shaft 26, the fixed wheel 23 is provided with a first perforation 27, the spring clamp 22 is provided with a second perforation 28, the first connecting end 24 is inserted into the first perforation 27, and the second connecting end 25 is inserted into the second perforation 28.

[0046] Since the fixed wheel 23 is fixed on the fixed groove 29, the first connecting end 24 is inserted into the first perforation 27, the second connecting end 25 is inserted into the second perforation 28, the first connecting end 24 is limited, and the second connecting end 25 is limited. The fixed wheel 23 drives the first connecting end 24 to move, so that the elastic torsion spring 21 has a tendency to drive the movable measuring head seat to move towards the fixed measuring head seat, and the fixed wheel 23 is fixed on the fixed groove 29. When the movable measuring head seat 8 moves under the action of force, the second connecting end 25 will be bent under the action of force; when the force on the movable measuring head seat 8 disappears, the second connecting end 25 returns to the original position, thereby driving the movable measuring head seat 8 to return to the original position. The elastic device can ensure that the movable measuring head is in close contact with the workpiece during measurement.

[0047] When the gear ring M value measuring instrument is used to measure an internal gear, the directions of the ball heads of the movable measuring head 10 and the fixed measuring head 14 are opposite, the fixed wheel 23 is adjusted so that the elastic force of the elastic torsion spring 21 drives the movable measuring head 10 to move away from the fixed measuring head 14, at this time, the wrench rod 20 is adjusted so that the movable measuring head 10 moves towards the fixed measuring head 14, the measured part is put in, and then the wrench rod 20 is released, the elastic force of the elastic torsion spring 21 drives the movable measuring head 10 to move towards the fixed measuring head 14, and the measurement is completed.

[0048] When the gear ring M value measuring instrument is used to measure an internal gear, the directions of the ball heads of the movable measuring head 10 and the fixed measuring head 14 are opposite, the fixed wheel 23 is adjusted so that the elastic force of the elastic torsion spring 21 drives the movable measuring head 10 to move away from the fixed measuring head 14, at this time, the wrench rod 20 is adjusted so that the movable measuring head 10 moves towards the fixed measuring head 14, the measured part is put in, and then the wrench rod 20 is released, the elastic force of the elastic torsion spring 21 drives the movable measuring head 10 to move towards the fixed measuring head 14, and the measurement is completed. Figure 1 When the gear ring M value measuring instrument is used to measure an internal gear, the directions of the ball heads of the movable measuring head 10 and the fixed measuring head 14 are opposite, the fixed wheel 23 is adjusted so that the elastic force of the elastic torsion spring 21 drives the movable measuring head 10 to move away from the fixed measuring head 14, at this time, the wrench rod 20 is adjusted so that the movable measuring head 10 moves towards the fixed measuring head 14, the measured part is put in, and then the wrench rod 20 is released, the elastic force of the elastic torsion spring 21 drives the movable measuring head 10 to move towards the fixed measuring head 14, and the measurement is completed.

Claims

1. A gear ring M value measuring instrument, characterized by, The utility model relates to a measuring table, installation cavity and elastic device are set in the measuring table interior, The installation cavity is equipped with mobile measuring head seat and fixed measuring head seat, the side wall of measuring table is equipped with the connecting hole who communicates with installation cavity, is installed in the connecting hole dial gauge, the dial head of dial gauge is located in installation cavity, the top of installation cavity is equipped with top plate, is equipped with sliding groove on top plate, still is fixedly equipped with two fixed shafts who are parallel to each other in installation cavity, be equipped with two sliding holes on mobile measuring head seat, two fixed shafts pass through two sliding holes, still be equipped with mobile measuring rod who passes through sliding groove on mobile measuring head seat, mobile measuring rod is fixed with mobile measuring head, mobile measuring head is located on measuring table, still be equipped with table joint on mobile measuring head seat, and table joint is in contact with the dial head of dial gauge, fixed measuring head seat is fixed on top plate, still be equipped with fixed measuring rod who passes through sliding groove on fixed measuring head seat, fixed measuring rod is fixed with fixed measuring head, still be equipped with rotary sliding groove on the side wall of measuring table, be equipped with spanner disc in rotary sliding groove, the circumferential rotation of spanner disc is carried out along its own axle in rotary sliding groove, be equipped with spanner rod on spanner disc, and the rotation of spanner disc is controlled through spanner rod, still be equipped with drive recess on spanner disc, the side of mobile measuring head seat away from dial gauge is equipped with adjusting block, adjusting block is fixed with adjusting hole and adjusting column, the fixed shaft close to spanner disc passes through adjusting hole, and adjusting column is inserted with drive recess, The elastic device is used to drive the mobile measuring head seat to move towards or away from the fixed measuring head seat. The elastic device includes an elastic torsion spring, a spring clamp, and a fixed wheel. The elastic torsion spring includes a first connecting end and a second connecting end. The first connecting end is arranged in parallel with the axis of the elastic torsion spring, and the second connecting end is arranged perpendicularly to the axis of the elastic torsion spring. The fixed wheel is fixed on the measuring table. The fixed wheel is provided with a connecting shaft, and the elastic torsion spring is sleeved on the connecting shaft. The spring clamp is fixed on the mobile measuring head seat. The fixed wheel is provided with a first through hole, and the spring clamp is provided with a second through hole. The first connecting end is inserted with the first through hole, and the second connecting end is inserted with the second through hole.

2. The gear rim M-value meter according to claim 1, characterized in that The elastic device is used to drive the mobile measuring head seat to move towards or away from the fixed measuring head seat. Specifically, the fixed wheel is rotated to drive the first connecting end to move, so that the elastic torsion spring has a tendency to drive the mobile measuring head seat to move towards or away from the fixed measuring head seat. The fixed wheel is fixed on the measuring table.

3. The gear rim M-value meter according to claim 1, characterized in that, The fixed measuring head seat is fixed on the top plate by bolts, and the position of the fixed measuring head seat is adjustable.

4. The gear rim M-value meter according to claim 1, characterized in that, The fixed measuring rod and the fixed measuring head seat, and the mobile measuring rod and the mobile measuring head seat are connected in a sliding fit.

5. The gear rim M-value meter according to claim 1, characterized in that, The shaft of the spanner disc is provided with a rotating shaft, which is fixed in the rotary sliding groove. The rotating shaft smoothes the sharp end position of the rotary sliding groove close to the drive recess, thereby expanding the movement displacement of the mobile measuring head seat.

6. The gear rim M-value meter according to claim 1, characterized in that, The size of the driving groove is larger than the adjusting column, so that the adjusting column can freely move in the driving groove when the moving head base moves.

7. The gear rim M-value meter according to any one of claims 1 to 6, characterized in that The gear ring M value measuring instrument can be used to measure internal gear or external gear. When measuring internal gear, first, the ball head directions of the moving head and the fixed head are set to be opposite, and the elastic device is adjusted to have a tendency to drive the moving head to move away from the fixed head. Then, the wrench lever is turned to move the moving head towards the fixed head, the part to be measured is put in, and then the wrench lever is released, and the elastic device drives the moving head to move in the opposite direction of the fixed head, thus completing the measurement. When measuring external gear, first, the ball head directions of the moving head and the fixed head are set to point to the center, and the elastic device is adjusted to have a tendency to drive the moving head to move towards the fixed head. Then, the wrench lever is turned to move the moving head in the opposite direction of the fixed head, the part to be measured is put in, and then the wrench lever is released, and the elastic device drives the moving head to move towards the fixed head, thus completing the measurement.

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