Inner ring cross ball distance and groove bottom distance measuring instrument

Abstract

The present invention relates to the technical field of bearing groove bottom detection, and proposes an inner ring cross-ball distance and groove bottom spacing measuring instrument, including a base with legs, through holes and grooves; a slide is slidably arranged on the base, and the slide is provided with multiple bearing surfaces with gradual height changes, and the bearing surfaces are used to place the test piece; the first push rod is fixed on the base and the end is used to contact the groove bottom of the test piece; the second push rod is slidably arranged in the groove and the end is used to contact the groove bottom on the other side of the test piece; the dial indicator is arranged on the base and the input telescopic end is located above the through hole; the push rod is slidably arranged in the through hole, and the push rod is used to push the input telescopic end; the connecting rod is slidably arranged on the base, and one end is connected to the second push rod, and the other end is connected to the push rod, and the connecting rod and the slide are located on opposite sides of the base. Through the above technical scheme, the problems of complex structure and high cost of bearing groove diameter measuring instruments in the related technology are solved, and a low-cost and high-precision measuring device is proposed.

Description

Technical Field

[0001] The invention relates to the technical field of bearing groove bottom detection, and in particular to an instrument for measuring inner ring cross-ball distance and groove bottom spacing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. High-precision measurement of the groove bottom diameter (diameter of the inner ring groove) of bearings and other similar parts usually uses a three-coordinate measuring machine, which has a complex structure, high cost, high initial investment, slow measurement speed, and high requirements on the operator's operating level, making it difficult to promote and apply on a large scale. Therefore, a low-cost, accurate measurement device is needed to improve the inspection and production efficiency of bearings. Summary of the invention

[0003] The present invention proposes an inner ring cross-ball distance and groove bottom spacing measuring instrument, which solves the problems of complex structure and high cost of bearing groove diameter measuring instruments in related technologies, and proposes a device with simple structure, easy operation, low cost and high measurement accuracy.

[0004] The technical solution of the present invention is as follows: an inner ring cross-ball distance and groove bottom spacing measuring instrument, comprising:

[0005] a base having legs, through holes and grooves;

[0006] A slide table, slidably disposed on the base, the slide table being provided with a plurality of bearing surfaces with gradually varying heights, the bearing surfaces being used for placing the test piece;

[0007] A first push rod, fixed on the base and having an end portion for contacting the bottom of the groove of the test piece;

[0008] A second push rod is slidably disposed in the groove and an end portion of the second push rod is used to contact the bottom of the groove on the other side of the test piece;

[0009] A dial indicator, which is arranged on the base and has an input telescopic end located above the through hole;

[0010] A push rod is slidably disposed in the through hole, and is used to push the input telescopic end; and

[0011] A connecting rod is slidably arranged on the base, and one end of the connecting rod is connected to the second push rod, and the other end is connected to the push rod. The connecting rod is used to realize the synchronous movement of the push rod and the second push rod. The connecting rod and the slide are located on opposite sides of the base.

[0012] As a further technical solution, an automatic reset component is also included, and the automatic reset component includes:

[0013] a baffle plate, disposed on the base, wherein the baffle plate and the second push rod are located on opposite sides of the base;

[0014] The spring is arranged between the connecting rod and the baffle plate, and one end of the spring is connected to the connecting rod, and the other end of the spring is connected to the baffle plate.

[0015] As a further technical solution, a driving assembly is also included, and the driving assembly includes:

[0016] A rotating plate, which is arranged on the base and has a rotating hole;

[0017] A rocker, which is inserted into the rotating hole and has both ends extending out of the rotating hole;

[0018] The cam is fixedly arranged at the end of the rocker and keeps contact with the connecting rod. The rotation of the cam pushes the connecting rod to slide back and forth on the base.

[0019] As a further technical solution, there are two springs and two baffles in one-to-one correspondence, and the cam is located between the two springs.

[0020] As a further technical solution, the rocker is L-shaped, two limit blocks are arranged on the base, and the rocker swings between the two limit blocks.

[0021] As a further technical solution, the through hole is a long square hole.

[0022] As a further technical solution, a connecting plate is provided at the bottom of the base, a sliding hole is opened in the connecting plate, and the connecting rod is inserted into the sliding hole.

[0023] As a further technical solution, a mounting seat is also included. The mounting seat is arranged on the base and has a clamping hole. The input telescopic end of the dial indicator is arranged through the clamping hole.

[0024] As a further technical solution, it also includes a support, which is detachably arranged on the base, and the other end of the first push rod is arranged on the base.

[0025] As a further technical solution, it also includes a guide rail, which is arranged on the base, and the slide is slidably arranged on the guide rail.

[0026] The working principle and beneficial effects of the present invention are as follows: compared with the prior art, a support leg is provided at the bottom of the base, and a groove is also provided on one side, and a groove is provided at the middle position of the base, the slide is slidably arranged on the base, and the slide has three bearing surfaces with gradually changing heights, and a workpiece to be tested is placed on the bearing surfaces, a first push rod is fixedly arranged on the base, and one end of the first push rod is kept in contact with the groove bottom of the workpiece to be tested, a second push rod is slidably arranged in the groove of the base, and one end is kept in contact with the groove bottom on the other side of the workpiece to be tested, and the first push rod and the second push rod are kept in contact with the relative groove bottoms of the workpiece to be tested respectively; a dial indicator is arranged on the base, and the push rod can be kept in contact with the input telescopic end of the dial indicator after passing through the through hole, one end of the connecting rod is connected to the second push rod, and the other end is connected to the push rod, so that the second push rod and the push rod can realize synchronous movement in the same direction, and since the movement direction of the connecting rod is perpendicular to the movement direction of the slide, in order to prevent interference between the surface connecting rod and the slide, the connecting rod and the slide are arranged on both sides of the base. The inner ring cross-ball distance and groove bottom spacing measuring instrument of the present invention has a simple structure and is easy to operate, and can measure the dimensions of the groove bottom of the test piece at three positions: upper, middle and lower, and then obtain the processing error of the test piece by comparing the values ​​with those of the standard part. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figure 1 is an isometric schematic diagram of the structure of the present invention;

[0029] Figure 2 for Figure 1 Bottom view of

[0030] Figure 3 for Figure 1 An isometric structural diagram from another angle;

[0031] Figure 4 for Figure 1 Right view of;

[0032] Figure 5 It is a schematic diagram of the structure of the push rod, the connecting rod and the second push rod in the present invention;

[0033] In the figure:

[0034] 1. Base, 2. Legs, 3. Slide, 4. Bearing surface, 5. Part to be tested, 6. First push rod, 7. Second push rod, 8. Dial indicator, 9. Push rod, 10. Connecting rod, 11. Baffle, 12. Spring, 13. Turn plate, 14. Rocker, 15. Cam, 16. Limit block, 17. Connecting plate, 18. Mounting seat, 19. Support, 20. Guide rail. DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1 to Figure 5 As shown, this embodiment provides an inner ring cross-ball distance and groove bottom distance measuring instrument, comprising:

[0037] A base 1 having legs 2, through holes and grooves;

[0038] A slide table 3 is slidably disposed on the base 1, and the slide table 3 is provided with a plurality of bearing surfaces 4 with gradually varying heights, and the bearing surfaces 4 are used to place the test piece 5;

[0039] The first push rod 6 is fixed on the base 1 and the end thereof is used to contact the bottom of the groove of the test piece 5;

[0040] A second push rod 7 is slidably disposed in the groove and an end portion thereof is used to contact the bottom of the groove on the other side of the test piece 5;

[0041] A dial indicator 8 is provided on the base 1 and the input telescopic end is located above the through hole;

[0042] A push rod 9 is slidably disposed in the through hole, and the push rod 9 is used to push the input telescopic end; and

[0043] The connecting rod 10 is slidably disposed on the base 1 , and one end of the connecting rod 10 is connected to the second push rod 7 , and the other end of the connecting rod 10 is connected to the push rod 9 . The connecting rod 10 is used to realize the synchronous movement of the push rod 9 and the second push rod 7 . The connecting rod 10 and the slide 3 are located on opposite sides of the base 1 .

[0044] In this embodiment, a support leg 2 is provided at the bottom of the base 1, and a groove is also provided on one side, and a groove is provided in the middle position of the base 1. A slide 3 is slidably provided on the base 1, and the slide 3 has three bearing surfaces 4 with a gradient height, and a test piece 5 is placed on the bearing surface 4. A first push rod 6 is fixedly provided on the base 1, and one end of the first push rod 6 is kept in contact with the bottom of the groove of the test piece 5. A second push rod 7 is slidably provided in the groove of the base 1, and one end is kept in contact with the bottom of the groove on the other side of the test piece 5. The first push rod 6 and the second push rod 7 are slidably provided in the groove of the base 1, and one end is kept in contact with the bottom of the groove on the other side of the test piece 5. The two push rods 7 are respectively in contact with the relative groove bottoms of the workpiece 5 to be tested; the dial indicator 8 is arranged on the base 1, and the push rod 9 can be in contact with the input telescopic end of the dial indicator 8 after passing through the through hole. One end of the connecting rod 10 is connected to the second push rod 7, and the other end is connected to the push rod 9, so that the second push rod 7 and the push rod 9 can achieve synchronous movement in the same direction. Since the movement direction of the connecting rod 10 is perpendicular to the movement direction of the slide 3, in order to prevent interference between the surface connecting rod 10 and the slide 3, the connecting rod 10 and the slide 3 are arranged on both sides of the base 1. The inner ring cross-ball distance and groove bottom spacing measuring instrument of the present invention has a simple structure and is easy to operate, and can measure the dimensions of the groove bottom of the workpiece 5 at three positions, namely, the upper, middle and lower positions, and then obtain the processing error of the workpiece 5 to be tested by comparing with the numerical value of the standard part.

[0045] In this embodiment, in order to prevent the second push rod 7 from being subjected to friction in the groove and the push rod 9 from being subjected to friction in the through hole, a gap can be provided between the second push rod 7 and the side wall of the groove, and a gap can be provided between the push rod 9 and the side wall of the through hole.

[0046] The working principle of the present invention is: first place the standard part on the bearing surface 4, then clamp the standard part with the first push rod 6 and the second push rod 7, and then adjust the dial indicator 8; then the worker moves the second push rod 7 to take out the standard part, puts in the workpiece to be tested 5, and then manually pushes the second push rod 7. After the second push rod 7 and the first push rod 6 clamp the workpiece to be tested 5, the processing error of the workpiece to be tested 5 can be obtained from the dial indicator 8.

[0047] like Figure 2 As shown, based on the same concept as the above embodiment, this embodiment further proposes to include an automatic reset component, and the automatic reset component includes:

[0048] The baffle plate 11 is disposed on the base 1, and the baffle plate 11 and the second push rod 7 are located on opposite sides of the base 1;

[0049] The spring 12 is disposed between the connecting rod 10 and the baffle 11 , with one end of the spring 12 connected to the connecting rod 10 and the other end of the spring 12 connected to the baffle 11 .

[0050] In this embodiment, in order to reduce manual operation, an automatic reset component can be provided, and the automatic reset component includes a baffle 11 and a spring 12. The baffle 11 is provided on the base 1, and the baffle 11 and the second push rod 7 are located on opposite sides of the base 1. The spring 12 is provided between the connecting rod 10 and the baffle 11. When the second push rod 7 is away from the workpiece to be tested 5, the connecting rod 10 will be driven away from the baffle 11 by the second push rod 7, and then the spring 12 will be stressed. Of course, after the person lets go, the spring 12 will bring the connecting rod 10 closer to the baffle 11, and then the second push rod 7 can be close to the workpiece to be tested 5. This arrangement improves the operability of the entire device.

[0051] like Figure 2 to Figure 4 As shown, based on the same concept as the above embodiment, this embodiment further proposes to include a driving component, and the driving component includes:

[0052] The rotating plate 13 is disposed on the base 1 and has a rotating hole;

[0053] The rocker 14 is inserted into the rotating hole and both ends thereof pass through the rotating hole;

[0054] The cam 15 is fixedly mounted on the end of the rocker 14 and keeps in contact with the connecting rod 10 . The rotation of the cam 15 drives the connecting rod 10 to slide back and forth on the base 1 .

[0055] In this embodiment, in order to avoid the contamination of the second push rod 7 when the worker operates it, and then contaminating the workpiece 5, a driving assembly can be set in the device, and the driving assembly includes a rotating plate 13, a rocking arm 14 and a cam 15. The rotating plate 13 is fixedly arranged on the base 1 and has a rotating hole. The rocking arm 14 is inserted in the rotating hole and is rotatably connected with the rotating plate 13. Both ends of the rocking arm 14 pass through the rotating hole. The cam 15 is arranged at one end of the workpiece and keeps in contact with the connecting rod 10. Since the edge diameter of the cam 15 is different, when the worker rotates the rocking arm 14, the edge of the cam 15 can realize the reciprocating movement of the connecting rod 10. The reciprocating movement of the connecting rod 10 will cause the movement of the second push rod 7 and the push rod 9, so that the second push rod 7 can contact the groove bottom of the workpiece 5 and the push rod 9 pushes the input telescopic end of the dial indicator 8. The cooperation of the driving assembly and the automatic reset assembly makes it more convenient for the worker to operate and improves the detection efficiency of the workpiece 5.

[0056] like Figure 2 As shown, based on the same concept as the above embodiment, this embodiment further proposes that there are two springs 12 and baffles 11 in one-to-one correspondence, and the cam 15 is located between the two springs 12 .

[0057] In this embodiment, in order to ensure the stable reciprocating movement of the connecting rod 10, the spring 12 can be set as two, and the cam 15 can be set between the two springs 12, that is, the contact position of the cam 15 and the connecting rod 10 is located between the connection positions of the two springs 12 and the connecting rod 10. This can ensure that the two springs 12 are subjected to the same force and achieve the same stretching distance, thereby avoiding friction between the second push rod 7 and the inner wall of the groove, thereby reducing the life of the second push rod 7.

[0058] like Figure 3 As shown, based on the same concept as the above embodiment, this embodiment further proposes that the rocker 14 is L-shaped, two limit blocks 16 are provided on the base 1, and the rocker 14 swings between the two limit blocks 16.

[0059] In this embodiment, the rocker 14 is L-shaped, and one end of the rocker 14 is arranged toward the top of the base 1, which is convenient for human operation; two limit blocks 16 are arranged on the base 1, and a part of the rocker 14 swings between the two limit blocks 16, so as to avoid excessive rotation by humans and causing damage to the spring 12, or causing the second push rod 7 to violently hit the test piece 5 and cause damage to the test piece 5.

[0060] like Figure 1 As shown, based on the same concept as the above embodiment, this embodiment also proposes that the through hole is a long square hole.

[0061] In this embodiment, since the push rod 9 needs to slide in the through hole, the through hole can be set as a long square hole.

[0062] like Figure 1 to Figure 4 As shown, based on the same concept as the above embodiment, this embodiment further proposes that a connecting plate 17 is provided at the bottom of the base 1, and a sliding hole is opened in the connecting plate 17, and the connecting rod 10 is inserted into the sliding hole.

[0063] In this embodiment, a connecting plate 17 is provided at the bottom of the base 1. There are two connecting plates 17 and they are arranged at intervals. A sliding hole is provided on the connecting plate 17. The connecting rod 10 is inserted into the sliding hole. The connecting rod 10 is slidably set at the bottom of the base 1 with the help of the connecting plate 17. This arrangement reduces the production cost and can also ensure that the connecting rod 10 will not be disturbed by foreign objects when sliding.

[0064] like Figure 1 to Figure 3 As shown, based on the same concept as the above embodiment, this embodiment further proposes to include a mounting seat 18, which is arranged on the base 1 and has a clamping hole, and the input telescopic end of the dial indicator 8 is arranged through the clamping hole.

[0065] In this embodiment, the mounting seat 18 is detachably arranged on the base 1 and has a clamping hole. The input telescopic end of the dial indicator 8 is arranged through the clamping hole. Since the input telescopic end of the dial indicator 8 is divided into a movable part and a fixed part, the fixed part is passed through the clamping hole. In this way, it can be ensured that the dial indicator 8 will not move when pushed by the push rod 9, thereby ensuring the measurement accuracy.

[0066] like Figure 1 As shown, based on the same concept as the above embodiment, this embodiment further proposes to include a support 19 , which is detachably arranged on the base 1 , and the other end of the first push rod 6 is arranged on the base 1 .

[0067] In this embodiment, the support 19 is detachably fixed to the base 1 by means of bolt connection, a clamping hole is provided on the support 19, and a threaded hole is provided on the inner wall of the clamping hole, the threaded hole penetrates to the outside of the support 19, the end of the first push rod 6 is inserted into the clamping hole, and is maintained in connection with the support 19 by means of a locking screw inserted into the threaded hole.

[0068] like Figure 1 to Figure 4 As shown, based on the same concept as the above embodiment, this embodiment further proposes to include a guide rail 20 , the guide rail 20 is arranged on the base 1 , and the slide 3 is slidably arranged on the guide rail 20 .

[0069] In this embodiment, the guide rail 20 is fixedly set on the base 1, and the slide 3 is slidably set on the guide rail 20, which can greatly reduce the friction force on the slide 3 on the basis of cost saving. In order to ensure that the slide 3 will not easily fall off the guide rail 20, a dovetail groove can be opened on the guide rail 20. The slide 3 uses the dovetail groove structure to maintain the only degree of freedom of movement on the guide rail 20.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inner ring cross-ball distance and groove bottom spacing measuring instrument, characterized in that: include: A base (1) having legs (2), a through hole and a groove; A slide table (3) slidably disposed on the base (1), the slide table (3) being provided with a plurality of bearing surfaces (4) with gradually varying heights, the bearing surfaces (4) being used to place the test piece (5); A first push rod (6) is fixedly mounted on the base (1) and has an end portion for contacting the bottom of the groove of the test piece (5); A second push rod (7) is slidably disposed in the groove and an end portion of which is used to contact the bottom of the groove on the other side of the test piece (5); A dial indicator (8) is disposed on the base (1) and has an input telescopic end located above the through hole; A push rod (9) is slidably disposed in the through hole, and the push rod (9) is used to push the input telescopic end; as well as a connecting rod (10) slidably disposed on the base (1), one end of which is connected to the second push rod (7) and the other end of which is connected to the push rod (9), the connecting rod (10) being used to achieve synchronous movement of the push rod (9) and the second push rod (7), the connecting rod (10) and the slide table (3) being located on opposite sides of the base (1); A support (19), the support (19) being detachably arranged on the base (1), and the other end of the first push rod (6) being arranged on the base (1); Also included is an automatic reset component, the automatic reset component comprising: A baffle (11) is disposed on the base (1), wherein the baffle (11) and the second push rod (7) are located on opposite sides of the base (1); a spring (12) disposed between the connecting rod (10) and the baffle (11), with one end connected to the connecting rod (10) and the other end connected to the baffle (11); Also included is a drive assembly, the drive assembly comprising: A rotating plate (13) is disposed on the base (1) and is provided with a rotating hole; A rocker (14) is inserted into the rotating hole and has two ends extending out of the rotating hole; A cam (15) is fixedly mounted on the end of the rocker (14) and is in contact with the connecting rod (10). The rotation of the cam (15) drives the connecting rod (10) to slide back and forth on the base (1).

2. The inner ring cross-ball distance and groove bottom spacing measuring instrument according to claim 1 is characterized in that: There are two springs (12) and two baffles (11) in one-to-one correspondence, and the cam (15) is located between the two springs (12).

3. The inner ring cross-ball distance and groove bottom spacing measuring instrument according to claim 2 is characterized in that: The rocker (14) is L-shaped, and two limit blocks (16) are provided on the base (1), and the rocker (14) swings between the two limit blocks (16).

4. The inner ring cross-ball distance and groove bottom spacing measuring instrument according to claim 2 is characterized in that: The through hole is a long square hole.

5. The inner ring cross-ball distance and groove bottom spacing measuring instrument according to claim 1 is characterized in that: A connecting plate (17) is provided at the bottom of the base (1), the connecting plate (17) is provided with a sliding hole, and the connecting rod (10) is inserted into the sliding hole.

6. The inner ring cross-ball distance and groove bottom spacing measuring instrument according to claim 1 is characterized in that: It also comprises a mounting seat (18), wherein the mounting seat (18) is arranged on the base (1) and is provided with a clamping hole, and the input telescopic end of the dial indicator (8) is arranged through the clamping hole.

7. The inner ring cross-ball distance and groove bottom distance measuring instrument according to any one of claims 1 to 6, characterized in that: It also comprises a guide rail (20), wherein the guide rail (20) is arranged on the base (1), and the slide table (3) is slidably arranged on the guide rail (20).

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