Detection tool for improving concentricity detection frequency after product processing

Abstract

The invention discloses a detection tool for improving concentricity detection frequency after product processing, which relates to the technical field of detection tools and comprises a base, a positioning mechanism and a detection mechanism, the positioning mechanism comprises a positioning base plate, an adjustable bearing and two fixed bearings, the positioning base plate is used for bearing a workpiece, the positioning base plate is obliquely arranged on the base, and the included angle between the positioning base plate and the base is 45 degrees; the adjustable bearing is arranged on the positioning base plate in a sliding mode, the two fixed bearings are both fixedly arranged on the positioning base plate, and the two fixed bearings and the adjustable bearing are arranged in an isosceles triangle shape. According to the scheme, the two fixed bearings and the adjustable bearing are arranged on the positioning base plate, when the workpiece is subjected to secondary clamping, the workpiece is positioned and clamped by sliding the adjustable bearing up and down, the concentricity of secondary clamping of the workpiece is guaranteed, and the workpiece can be accurately positioned and clamped. And meanwhile, the clamping efficiency of the workpiece and the accuracy of a detection result are improved.

Description

Technical Field

[0001] The invention relates to a checking tool for improving the concentricity detection frequency after processing a product, and belongs to the technical field of checking tools. Background Art

[0002] After the fixture is processed in separate steps and the reference inner circle is positioned by floating up and down, the boss circle to be measured is then processed. The fluctuations in the secondary clamping clearance, positioning fit clearance, and size of the reference positioning circle will all lead to fluctuations in the coaxiality size, making it difficult to effectively guarantee the concentricity of the workpiece in the secondary clamping clearance, increasing the scrap rate of the product and also affecting the product quality inspection results. Summary of the invention

[0003] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a checking fixture for improving the concentricity detection frequency after processing a product.

[0004] The technical solution of the present invention is achieved as follows: a check fixture for improving the concentricity detection frequency after processing a product comprises a base and a positioning mechanism and a detection mechanism arranged on the base;

[0005] The positioning mechanism comprises a positioning base plate, an adjustable bearing and two fixed bearings. The positioning base plate is used to carry the workpiece. The positioning base plate is tilted on the base, and the angle between the positioning base plate and the base is 45 degrees. The adjustable bearing is slidably arranged on the positioning base plate, and the two fixed bearings are fixedly arranged on the positioning base plate. The two fixed bearings and the adjustable bearing are arranged in an isosceles triangle. The adjustable bearing and the two fixed bearings are both extended into the workpiece, and the adjustable bearing and the two fixed bearings are both rotatably provided with a plurality of rollers, and the rollers on the adjustable bearing and the two fixed bearings are both rotatably matched with the inner wall of the workpiece. The adjustable bearing can press or loosen the workpiece by sliding.

[0006] The detection mechanism comprises a mounting support and a micrometer, wherein the mounting support is fixedly arranged on the base, and the micrometer is slidably arranged on the mounting support, and the micrometer is used for detecting a workpiece located on the positioning substrate.

[0007] Preferably, a through groove structure is provided on the positioning substrate, a support plate is fixedly arranged on the bottom surface of the positioning substrate, and a sliding plate that slidably cooperates with the support plate is arranged in the through groove structure; a fixed block is provided on the adjustable bearing, the adjustable bearing passes through the sliding plate and the support plate in sequence and extends downward, and the fixed block on the adjustable bearing is fixed on the top surface of the sliding plate, and the adjustable bearing slidably cooperates with the support plate through the sliding plate.

[0008] Preferably, a plurality of guide rods are provided at the front end of the sliding plate, and elastic members are sleeved on the plurality of guide rods; a plurality of telescopic grooves are provided on the positioning base plate located in the through groove structure; one end of the elastic member abuts against the sliding plate, and the other end extends into the telescopic groove and cooperates with the telescopic groove.

[0009] Preferably, a driving assembly for driving the adjustable bearing to slide is provided at the bottom of the positioning base plate, and the driving assembly includes a driving seat, a driving rod and a first locking knob; a movable groove is provided on the driving seat, and the middle part of the driving rod is hinged at the center of the movable groove, one end of the driving rod is a driving end, and the other end is an engaging end, and the engaging end is a flat structure; a driving groove is provided on the part of the adjustable bearing extending from the bottom of the support plate, and the engaging end of the driving rod extends into the driving groove and cooperates with the driving groove; the first locking knob is fixed to the lower end of the adjustable bearing, and the first locking knob is used to drive the adjustable bearing to rotate, and the adjustable bearing locks the driving rod by rotating.

[0010] Preferably, the support plate is provided with a long groove for sliding of the adjustable bearing, and the long groove is provided along the length direction of the positioning substrate.

[0011] Preferably, a plurality of pads are concentrically arranged on the top surface of the positioning substrate, and the plurality of pads are matched with the bottom edge of the workpiece.

[0012] Preferably, the roller is made of PEEK material.

[0013] Preferably, a slide rail is provided on the top surface of the mounting support, a slider is provided on the top of the micrometer, and the micrometer cooperates with the mounting support through the slider and the slide rail; a second locking knob is provided on the slider, and the second locking knob is used to lock the slider.

[0014] Preferably, a limit stopper is provided at the end of the slide rail.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0016] The present invention provides a testing fixture for improving the concentricity detection frequency after processing a product. By arranging two fixed bearings and one adjustable bearing on a positioning substrate, the workpiece is positioned and clamped by sliding the adjustable bearing up and down when the workpiece is clamped for a second time, thereby ensuring the concentricity of the workpiece during the second clamping and improving the clamping efficiency of the workpiece and the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0018] Attached Figure 1 It is a structural schematic diagram of a checking fixture for improving the concentricity detection frequency after processing a product according to the present invention;

[0019] Attached Figure 2 It is a structural schematic diagram of a check fixture for removing a workpiece to improve the concentricity detection frequency after processing a product according to the present invention;

[0020] Attached Figure 3 For attachment Figure 2 The enlarged view of point A in the middle;

[0021] Attached Figure 4 It is a structural schematic diagram of the bottom of the positioning substrate of the present invention;

[0022] Attached Figure 5 For attachment Figure 4 The enlarged view of point B in the middle;

[0023] Attached Figure 6 A view from another perspective of the bottom of the positioning substrate of the present invention;

[0024] Attached Figure 7 For attachment Figure 6 Enlarged view of point C in the middle.

[0025] In the figure: 1. base; 2. positioning base plate; 21. through groove structure; 22. support plate; 221. long groove; 23. sliding plate; 231. guide rod; 2311. elastic member; 24. telescopic groove; 25. driving seat; 251. movable groove; 26. driving rod; 261. driving end; 262. fitting end; 27. first locking knob; 28. pad; 3. adjustable bearing; 31. roller; 32. fixed block; 33. driving groove; 4. fixed bearing; 5. workpiece; 6. mounting support; 61. slide rail; 611. limit stopper; 7. micrometer; 71. slider; 711. second locking knob. DETAILED DESCRIPTION

[0026] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "straight", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] As attached Figure 1-2 As shown, the inspection tool for improving the concentricity detection frequency after processing a product according to the present invention comprises a base 1 and a positioning mechanism and a detection mechanism arranged on the base 1 .

[0030] The positioning mechanism includes a positioning substrate 2, an adjustable bearing 3 and two fixed bearings 4, the positioning substrate 2 is used to carry the workpiece 5, wherein a plurality of pads 28 are concentrically arranged on the top surface of the positioning substrate 2, and the plurality of pads 28 are all matched with the bottom edge of the workpiece 5; the positioning substrate 2 is obliquely arranged on the base 1, and the angle between the positioning substrate 2 and the base 1 is 45 degrees. In this embodiment, a mounting seat structure can be arranged at the bottom of the positioning substrate 2, and the positioning substrate 2 is fixed to the base 1 through the mounting seat structure.

[0031] The adjustable bearing 3 is slidably set on the positioning substrate 2, and the two fixed bearings 4 are fixedly set on the positioning substrate 2. The two fixed bearings 4 and the adjustable bearing 3 are arranged in an isosceles triangle; the adjustable bearing 3 and the two fixed bearings 4 are all extended into the workpiece 5, and the adjustable bearing 3 and the two fixed bearings 4 are rotatably provided with multiple rollers 31, and the rollers 31 on the adjustable bearing 3 and the two fixed bearings 4 are all rotatably matched with the inner wall of the workpiece 5. In this embodiment, the rollers 31 are made of PEEK material to prevent the rollers 31 from scratching the inner wall of the workpiece 5; the adjustable bearing 3 presses or loosens the workpiece 5 by sliding.

[0032] As attached Figure 4-7 As shown, specifically, a through-groove structure 21 is provided on the positioning substrate 2, and a support plate 22 is fixedly provided on the bottom surface of the positioning substrate 2. The support plate 22 can be fixed on the bottom surface of the positioning substrate 2 by bolt connection or welding. A sliding plate 23 that slidably cooperates with the support plate 22 is provided in the through-groove structure 21; wherein the sliding direction of the sliding plate 23 is consistent with the length direction of the positioning substrate 2; a fixing block 32 is provided on the adjustable bearing 3, and the adjustable bearing 3 passes through the center of the fixing block 32, and the two are tightly connected, but the adjustable bolt can still rotate ; The adjustable bearing 3 passes through the sliding plate 23 and the support plate 22 in sequence and extends downward, and the fixed block 32 on the adjustable bearing 3 is fixed on the top surface of the sliding plate 23, wherein the adjustable bearing 3 and the sliding plate 23 are also tightly connected, but the adjustable bearing 3 is rotatable, and the adjustable bearing 3 is slidably matched with the support plate 22 through the sliding plate 23, and a long groove 221 is provided on the support plate 22 for the adjustable bearing 3 to slide, and the long groove 221 is opened along the length direction of the positioning substrate 2; thereby, the adjustable bearing 3 can slide along the length direction of the positioning substrate 2.

[0033] Among them, a plurality of guide rods 231 are arranged at the front end of the sliding plate 23, and elastic members 231 are sleeved on the plurality of guide rods 231. In this embodiment, the elastic member 2311 is arranged as a spring, and a plurality of telescopic grooves 24 are opened on the positioning substrate 2 located in the through groove structure 21; one end of the elastic member 2311 is against the sliding plate 23, and the other end extends into the telescopic groove 24 and cooperates with the telescopic groove 24.

[0034] In this embodiment, the number of the guide rod 231 , the number of the elastic member 2311 and the number of the telescopic slot 24 are all two, and the number may also be changed according to actual needs.

[0035] During operation, the sliding plate 23 drives the guide rod 231 to move, and the telescopic groove 24 provides a moving space for the guide rod 231, and also provides a compression or relaxation space for the elastic member 2311. When the sliding plate 23 moves upward (the direction in which the positioning substrate 2 moves away from the base 1 is defined as upward, and the direction in which it is connected to the base 1 is defined as downward), the guide rod 231 enters the telescopic groove 24 driven by the sliding plate 23, and the elastic member 2311 is compressed into the telescopic groove 24 due to the pressure of the sliding plate 23. After the sliding plate 23 slides to the bottom, the front end of the guide rod 231 just contacts the bottom of the telescopic groove 24, and the elastic member 2311 is also completely compressed in the telescopic groove 24. When the sliding plate 23 moves downward, the elastic member 2311 pushes the sliding plate 23 downward to restore the original state, so that the sliding plate 23 is reset.

[0036] Furthermore, a driving assembly for driving the adjustable bearing 3 to slide is provided at the bottom of the positioning substrate 2, and the driving assembly includes a driving seat 25, a driving rod 26 and a first locking knob 27; a movable groove 251 is provided on the driving seat 25, and the direction of the movable groove 251 is consistent with the length direction of the positioning substrate 2, and the middle part of the driving rod 26 is hinged at the center of the movable groove 251, and the middle part of the driving rod 26 can be hinged in the movable groove 251 of the driving seat 25 through a pin shaft and other structures, one end of the driving rod 26 is a driving end 261, and the other end is a fitting end 262, as shown in the attached Figure 7 As shown, the mating end 262 is a flat structure.

[0037] A driving groove 33 is provided on the portion of the adjustable bearing 3 extending from the bottom of the support plate 22, and the engaging end 262 of the driving rod 26 extends into the driving groove 33 and cooperates with the driving groove 33; when the engaging end 262 of the driving rod 26 extends into the driving groove 33, the driving end 261 and the engaging end 262 of the driving rod 26 form a structure similar to a lever, and when the driving end 261 of the driving rod 26 moves downward, the engaging end 262 of the driving rod 26 drives the adjustable bearing 3 to move upward, and when the driving end 261 of the driving rod 26 moves upward, the engaging end 262 of the driving rod 26 drives the adjustable bearing 3 to move downward.

[0038] The first locking knob 27 is fixed to the lower end of the adjustable bearing 3. The first locking knob 27 is used to drive the adjustable bearing 3 to rotate, and the adjustable bearing 3 locks the driving rod 26 by rotating; when the adjustable bearing 3 moves up, the first locking knob 27 is rotated counterclockwise, and the driving groove 33 on the adjustable bearing 3 will jam the engaging end 262 of the driving rod 26, thereby preventing the adjustable bearing 3 from automatically resetting under the action of the elastic member 2311; when the adjustable bearing 3 needs to move down, the first locking knob 27 is rotated clockwise, and the driving groove 33 on the adjustable bearing 3 releases the engaging end 262 of the driving rod 26, and the adjustable bearing 3 automatically resets under the action of the elastic member 2311.

[0039] The detection mechanism includes a mounting support 6 and a micrometer 7 . The mounting support 6 is fixedly arranged on the base 1 . The micrometer 7 is slidably arranged on the mounting support 6 . The micrometer 7 is used to detect the workpiece 5 located on the positioning substrate 2 .

[0040] Specifically, a slide rail 61 is provided on the top surface of the mounting support 6, a slider 71 is provided on the top of the micrometer 7, and the micrometer 7 cooperates with the mounting support 6 through the slider 71 and the slide rail 61; a second locking knob 711 is provided on the slider 71, and the second locking knob 711 is used to lock the slider 71.

[0041] A limit stopper 611 is disposed at the end of the slide rail 61 to prevent the slider 71 from sliding out of the slide rail 61 .

[0042] The working principle of the present invention is as follows:

[0043] When conducting product inspection, first press the driving end 261 of the driving rod 26 downward so that the engaging end 262 of the driving rod 26 drives the adjustable bearing 3 to slide upward, and tighten the first locking knob 27 counterclockwise to lock the adjustable bearing 3 there. At this time, the elastic member 2311 is compressed, and the distance between the adjustable bearing 3 and the two fixed bearings 4 is reduced. The workpiece 5 is gently put on the adjustable bearing 3 and the two fixed bearings 4, so that the inner wall of the workpiece 5 fits with the rollers 31 on the two fixed bearings 4; then release the first locking knob 27 clockwise, and the adjustable bearing 3 moves downward under the action of the elastic member 2311 and is automatically reset. The driving end 261 of the driving rod 26 is also automatically reset under the drive of the adjustable bearing 3. At this time, the adjustable bearing 3 presses down the workpiece 5, and the rollers 31 on the adjustable bearing 3 are pressed against the workpiece 5. 1 rotates with the inner wall of the workpiece 5 to complete the positioning of the workpiece 5; then the dial gauge 7 is pushed to move toward the workpiece 5, and the dial gauge 7 automatically stops when it reaches the limit stopper 611, and the second locking knob 711 is tightened to fix the dial gauge 7. At this time, the staff gently holds the bottom of the workpiece 5 with one hand, and pushes the workpiece 5 clockwise with the other hand. The workpiece 5 rotates one circle to record the maximum positive value and the maximum negative value of the dial gauge 7. After the measurement is completed, the driving end 261 of the driving rod 26 is pressed downward again to separate the adjustable bearing 3 from the inner wall of the workpiece 5, and the first locking knob 27 is tightened counterclockwise to lock the adjustable bearing 3 here, and then the first locking knob 27 is loosened, and the dial gauge 7 is pushed to the end away from the workpiece 5. Finally, the staff holds it down with one hand and holds it up with the other hand to gently take out the workpiece 5.

[0044] In summary, the present invention arranges two fixed bearings 4 and one adjustable bearing 3 on the positioning substrate 2. When the workpiece 5 is clamped for the second time, the workpiece 5 is positioned and clamped by sliding the adjustable bearing 3 up and down, thereby ensuring the concentricity of the workpiece 5 during the second clamping, and at the same time improving the clamping efficiency of the workpiece 5 and the accuracy of the detection results.

[0045] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A gauge for increasing the frequency of concentricity detection after processing a product, characterized in that: It comprises a base (1) and a positioning mechanism and a detection mechanism arranged on the base (1); The positioning mechanism comprises a positioning base plate (2), an adjustable bearing (3) and two fixed bearings (4); the positioning base plate (2) is used to carry the workpiece (5); the positioning base plate (2) is tiltedly arranged on the base (1), and the angle between the positioning base plate (2) and the base (1) is 45 degrees; the adjustable bearing (3) is slidably arranged on the positioning base plate (2); the two fixed bearings (4) are both fixedly arranged on the positioning base plate (2); the two fixed bearings (4) and the adjustable bearing (3) are arranged in an isosceles triangle; the adjustable bearing (3) and the two fixed bearings (4) are both extended into the workpiece (5); the adjustable bearing (3) and the two fixed bearings (4) are both rotatably provided with a plurality of rollers (31); the rollers (31) on the adjustable bearing (3) and the two fixed bearings (4) are both rotatably matched with the inner wall of the workpiece (5); the adjustable bearing (3) presses or loosens the workpiece (5) by sliding; The detection mechanism comprises a mounting support (6) and a micrometer (7), wherein the mounting support (6) is fixedly arranged on the base (1), and the micrometer (7) is slidably arranged on the mounting support (6), and the micrometer (7) is used to detect a workpiece (5) located on a positioning substrate (2).

2. A gauge for increasing the frequency of concentricity detection after processing a product according to claim 1, characterized in that: The positioning substrate (2) is provided with a through groove structure (21), a support plate (22) is fixedly arranged on the bottom surface of the positioning substrate (2), and a sliding plate (23) slidably matched with the support plate (22) is arranged in the through groove structure (21); a fixing block (32) is arranged on the adjustable bearing (3), the adjustable bearing (3) passes through the sliding plate (23) and the support plate (22) in sequence and extends downward, and the fixing block (32) on the adjustable bearing (3) is fixed on the top surface of the sliding plate (23), and the adjustable bearing (3) slidably matches with the support plate (22) through the sliding plate (23).

3. A gauge for increasing the frequency of concentricity detection after processing a product according to claim 2, characterized in that: A plurality of guide rods (231) are provided at the front end of the sliding plate (23), and elastic members (2311) are sleeved on the plurality of guide rods (231). A plurality of telescopic grooves (24) are provided on the positioning base plate (2) located in the through groove structure (21); one end of the elastic member (2311) abuts against the sliding plate (23), and the other end extends into the telescopic groove (24) and cooperates with the telescopic groove (24).

4. A test fixture for increasing the frequency of concentricity detection after processing a product according to claim 3, characterized in that: A driving assembly for driving the adjustable bearing (3) to slide is arranged at the bottom of the positioning base plate (2), and the driving assembly comprises a driving seat (25), a driving rod (26) and a first locking knob (27); a movable groove (251) is provided on the driving seat (25), the middle part of the driving rod (26) is hinged at the center of the movable groove (251), one end of the driving rod (26) is a driving end (261), and the other end is a fitting end (262), and the fitting end (26 2) is a flat structure; a driving groove (33) is provided on the portion of the adjustable bearing (3) extending from the bottom of the support plate (22); the engaging end (262) of the driving rod (26) extends into the driving groove (33) and cooperates with the driving groove (33); the first locking knob (27) is fixed to the lower end of the adjustable bearing (3); the first locking knob (27) is used to drive the adjustable bearing (3) to rotate, and the adjustable bearing (3) locks the driving rod (26) by rotating.

5. A gauge for increasing the frequency of concentricity detection after processing a product according to claim 4, characterized in that: The support plate (22) is provided with a long groove (221) for the adjustable bearing (3) to slide, and the long groove (221) is provided along the length direction of the positioning base plate (2).

6. A gauge for increasing the frequency of concentricity detection after processing a product according to claim 1, characterized in that: A plurality of cushion blocks (28) are concentrically arranged on the top surface of the positioning substrate (2), and the plurality of cushion blocks (28) are all matched with the bottom edge of the workpiece (5).

7. A gauge for increasing the frequency of concentricity detection after processing a product according to claim 1, characterized in that: The roller (31) is made of PEEK material.

8. A gauge for increasing the frequency of concentricity detection after processing a product according to claim 1, characterized in that: A slide rail (61) is arranged on the top surface of the mounting support (6), a slider (71) is arranged on the top of the micrometer (7), and the micrometer (7) cooperates with the mounting support (6) via the slider (71) and the slide rail (61); a second locking knob (711) is arranged on the slider (71), and the second locking knob (711) is used to lock the slider (71).

9. A gauge for increasing the frequency of concentricity detection after processing a product according to claim 8, characterized in that: A limit stopper (611) is provided at the end of the slide rail (61).

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