Novel matrix type clamping detection device for small-size shaft parts

Abstract

The utility model relates to the technical field of detection equipment, in particular to a novel matrix type clamping detection device for small-size shaft parts. The clamp is used for clamping and detecting a to-be-detected part and comprises a clamp body, a positioning frame, a moving frame and a push plate, the positioning frame is fixedly connected to the clamp body, the moving frame is slidably connected to the positioning frame, the push plate is connected to the moving frame, and the push plate drives the moving frame and the positioning frame to be matched to clamp the to-be-detected part. The positioning frame and the moving frame form a swallow-tail-shaped space, the pushing plate drives the moving frame to move longitudinally, the swallow-tail-shaped space is opened and closed according to the size, and a part to be detected is clamped or loosened. According to the device, the problem that different detection clamps need to be redesigned and manufactured when shaft parts with different diameters are detected is solved, the shaft parts with different sizes can be detected by one clamp, the universality of the clamp is improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical parts detection equipment, in particular to a novel matrix clamping detection device for small-sized shaft parts. Background Art

[0002] When inspecting mechanical parts, small shafts are often encountered. Currently, these parts are primarily inspected using V-shaped irons and three-dimensional coordinate measuring machines to detect part size and form and position tolerances. This involves clamping and inspecting each part individually, resulting in very low efficiency. When the number of parts to be inspected is very large, the problem of low inspection efficiency becomes particularly prominent, significantly tying up inspection equipment and personnel. Therefore, to reduce clamping time and improve inspection efficiency, it is necessary to design efficient and convenient inspection tooling, combined with a new digital projector, to accurately and quickly provide inspection results and shorten inspection time. Utility Model Content

[0003] The purpose of this utility model is to provide a fixture for quickly clamping and disassembling small shaft parts during projector testing. This fixture is suitable for use as an auxiliary testing device for a variety of small shaft parts. Using a digital projector, it can batch test the external dimensions and form and position tolerances of the ends of shaft parts. This device improves the versatility of fixtures for these parts, reduces tooling manufacturing costs and cycle times, and shortens production setup time.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new matrix clamping and detection device for small-sized shaft parts, which is used for clamping and detecting parts to be inspected, including a clamping body, a positioning frame, a movable frame and a push plate. The positioning frame is fixedly connected to the clamping body, the movable frame is slidably connected to the positioning frame, and the push plate is connected to the movable frame. The positioning frame and the movable frame form a dovetail-shaped space, and the push plate drives the movable frame to move longitudinally to realize the opening and closing of the dovetail-shaped space, thereby clamping or loosening the parts to be inspected.

[0005] The clamp body is a rectangular plate-like structure, with multiple groups of positioning grooves distributed horizontally and parallely on the end surface of the clamp body, and the positioning frame is positioned and connected to the clamp body through each group of positioning grooves; multiple square holes are evenly opened on the end surface of the clamp body above each group of positioning grooves, and rectangular holes are arranged on the lower side of each group of positioning grooves at positions symmetrical to the square holes; first threaded holes are respectively provided on the end surfaces of both sides of the clamp body, and the second handle is connected to the first threaded hole.

[0006] The positioning frame is a rectangular strip structure, and a plurality of grooves are evenly distributed on the upper end surface at equal intervals. The groove includes an angled bevel of the positioning frame, a sliding surface of the positioning frame and a straight edge. The straight edge and the sliding surface of the positioning frame are vertically arranged. The angled bevel of the positioning frame, the sliding surface of the positioning frame and the straight edge form a right-angled trapezoidal groove that is smaller at the top and larger at the bottom. The right-angled trapezoidal groove is used to accommodate the parts to be inspected; the positioning frame is also provided with a guide pin hole and a positioning pin mounting screw hole; the guide pin holes are evenly distributed on the transverse center line of the positioning frame, and guide pins are installed in the guide pin holes. The movable frame is slidably connected to the sliding surface of the positioning frame by a clearance fit through the guide pins; the positioning pin mounting screw hole is arranged on one side of the angled bevel of the positioning frame, and a positioning pin is installed in the positioning pin mounting screw hole for axial positioning of the parts to be inspected.

[0007] The movable frame is an L-shaped structure including a horizontal and vertical section; a through groove is provided in the middle of the inner side below the horizontal and vertical section, and waist grooves are provided on both sides of the horizontal and vertical section; the vertical section includes an upper straight section, a middle oblique section and a lower straight section; the upper straight section is a cylinder, and the push plate is connected to the cylinder; the longitudinal section of the middle oblique section is an oblique right-angled trapezoidal structure with a larger upper portion and a smaller lower portion, which is composed of an angled surface and a straight edge of the movable frame, a countersunk hole is provided on the straight edge of the middle oblique section, and a reset spring is provided in the countersunk hole, and the angled surface of the movable frame is enclosed by the positioning frame to clamp the parts to be inspected; the upper end of the lower straight section fits with the lower end of the middle oblique section, and the lower end of the lower straight section is vertically connected to one end of the horizontal and vertical section.

[0008] The push plates are arranged in multiple groups, and each group of push plates includes a horizontally arranged long strip, and a plurality of inverted L-shaped protrusions are vertically and evenly spaced on the upper surface of the long strip. A through hole is opened at the free end position of the inverted L-shape of each protrusion, and the through hole is connected to the movable frame; a second threaded hole is opened at one end of the long strip, and a first handle is connected to the second threaded hole.

[0009] The guide pin and the guide pin hole adopt H7 / n6 interference fit.

[0010] The positioning pin is connected to the positioning pin mounting screw hole by interference thread, and the interference is not less than 0.1mm.

[0011] A hollow inner hole is provided inside one end of the positioning pin, and a thread is arranged on the outside, and four elastic grooves are all arranged on the thread; a wrench groove is provided on the outer cylinder at the other end of the positioning pin.

[0012] The middle through slot and the positioning frame adopt H7 / h6 clearance fit in the width direction; the waist slots on both sides and the positioning frame adopt H7 / f6 clearance fit.

[0013] Beneficial effects:

[0014] This device solves the problem of needing to redesign and manufacture different inspection fixtures when inspecting shaft parts of different diameters. It can enable a pair of fixtures to inspect shaft parts of different sizes, thereby improving the versatility of such fixtures, reducing manufacturing costs and cycles, and shortening production preparation time.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 these drawings without paying any creative work.

[0017] Figure 1 It is an overall schematic diagram of the utility model;

[0018] Figure 2 It is the left view of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the clamp of the utility model;

[0020] Figure 4 This is a left side view of the clamp body of the utility model;

[0021] Figure 5 It is a schematic diagram of the monomer structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the positioning frame of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the mobile rack of the utility model;

[0024] Figure 8 This is a right side view of the mobile frame of the utility model;

[0025] Figure 9 This is a schematic diagram of the push plate structure of the utility model;

[0026] Figure 10 This is a schematic diagram of the positioning pin structure of the utility model.

[0027] In the figure: 1. Clamping body; 2. Positioning frame; 3. Moving frame; 4. Return spring; 5. Guide pin; 6. Positioning pin; 7. Push plate; 8. First handle; 9. Second handle; 10. Part to be inspected; 11. Positioning groove; 12. Square hole; 12-1. Rectangular hole; 13. First threaded hole; 14. Center line of guide pin; 15. Sliding surface of positioning frame; 16. Through groove; 17. Waist groove; 18. Countersunk hole; 19. Cylinder; 20. Angled surface of moving frame; 21. Angled surface of positioning frame; 22. Through hole; 23. Second threaded hole; 24. Guide pin hole; 25. Screw hole for mounting the positioning pin. Specific implementation method 2,

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] Example:

[0031] like Figures 1-10 The shown device is a new type of matrix clamping and detection device for small-sized shaft parts, which is used for clamping and detecting the part 10 to be inspected, and includes a clamping body 1, a positioning frame 2, a movable frame 3 and a push plate 7. The positioning frame 2 is fixedly connected to the clamping body 1, and the movable frame 3 is slidably connected to the positioning frame 2. The positioning frame 2 and the movable frame 3 form a dovetail-shaped space. The movable frame 3 is driven longitudinally by the push plate 7 to realize the opening and closing of the dovetail-shaped space, thereby clamping or loosening the part 10 to be inspected.

[0032] like Figure 1 、 Figure 3 and Figure 4 As shown, the clamp body 1 is a rectangular plate structure, and a plurality of groups of positioning grooves 11 are distributed horizontally and parallel on the end face of the clamp body 1, and the positioning frame 2 is positioned and connected to the clamp body 1 through each group of positioning grooves 11; a plurality of square holes 12 are evenly provided on the end face of the clamp body 1 above each group of positioning grooves 11, and rectangular holes 12-1 are arranged at positions symmetrical to the square holes 12 on the lower side of each group of positioning grooves; first threaded holes 13 are respectively provided on the end faces of both sides of the clamp body 1, and the second handle 9 is connected in the first threaded hole 13.

[0033] Further, such as Figure 5 and Figure 6As shown, the positioning frame 2 is a rectangular strip structure, and a plurality of grooves are evenly distributed on the upper end surface at equal intervals. The groove includes a positioning frame angle bevel 21, a positioning frame sliding surface 15 and a straight edge. The straight edge and the positioning frame sliding surface 15 are vertically arranged. The positioning frame angle bevel 21, the positioning frame sliding surface 15 and the straight edge form a right-angled trapezoidal groove with a smaller top and a larger bottom. The right-angled trapezoidal groove is used to accommodate the part to be inspected 10; the positioning frame 2 is also provided with a guide pin hole 24 and a positioning pin mounting screw hole 25; the guide pin holes 24 are evenly distributed on the transverse center line of the positioning frame 2, and a guide pin 5 is installed in the guide pin hole 24. The movable frame 3 is slidably connected to the positioning frame sliding surface 15 by a clearance fit through the guide pin 5; the positioning pin mounting screw hole 25 is arranged on one side of the positioning frame angle bevel 21, and a positioning pin 6 is installed in the positioning pin mounting screw hole 25 for axial positioning of the part to be inspected 10.

[0034] The parallelism difference between the hole center connecting line of all guide pin holes 24, i.e. the guide pin center connecting line 14 and the sliding surface 15 of the positioning frame (the surface supporting the moving frame) is not greater than 0.05mm.

[0035] The thread diameter of the positioning pin 6 is slightly larger than the thread diameter of the positioning pin mounting screw hole 25 by 0.1 mm. The connection between the two is an interference thread connection. The exposed length is adjusted according to the part structure. After adjustment, the axial position is fixed by the interference of the thread connection.

[0036] Further, such as Figure 7 and Figure 8 As shown, the movable frame 3 is installed on the positioning frame 2, and the movable frame 3 is an L-shaped structure including a horizontal and vertical section; a through groove 16 is provided in the middle of the inner side below the horizontal and vertical section, and waist grooves 17 are provided on both sides of the horizontal and vertical section; the vertical section includes an upper straight section, a middle oblique section and a lower straight section; the upper straight section is a cylinder 19, and the push plate 7 is connected to the cylinder 19; the longitudinal section of the middle oblique section is an oblique right-angled trapezoidal structure with a larger upper part and a smaller lower part, which is composed of an angled surface 20 of the movable frame and a straight edge, and a countersunk hole 18 is provided on the straight edge of the middle oblique section, and the reset spring 4 is provided in the countersunk hole 18 to realize automatic reset of the movable frame 3; the angled surface 20 of the movable frame and the angled surface 21 of the positioning frame enclose a dovetail groove for clamping the piece to be inspected 10; the upper end of the lower straight section fits with the lower end of the middle oblique section, and the lower end of the lower straight section is vertically connected to one end of the horizontal and vertical section.

[0037] The diameter and length of the steel wire of the return spring 4 shall not produce indentations on the surface of the part 10 after elastic deformation; the total width of the movable frame 3 shall be greater than the width of the positioning frame 2, not less than 1.5 times the width of the positioning frame 3, not more than twice, and shall not affect the positioning and clamping of the parts.

[0038] Further, such as Figure 9As shown, the push plates 7 are arranged in multiple groups, and each group of push plates 7 includes a horizontally arranged long strip, and a plurality of inverted L-shaped convex teeth are vertically and evenly spaced on the upper surface of the long strip. A through hole 22 is provided at the free end position of the inverted L-shape of each convex tooth, and the through hole 22 is sleeved on the cylinder 19 of the movable frame 3; a second threaded hole 23 is provided at one end of the long strip, and a first handle 8 is connected to the second threaded hole 23, and the first handle 8 is used to manually push and pull the push plate 7.

[0039] The guide pin 5 and the guide pin hole 24 adopt an H7 / n6 interference fit.

[0040] The positioning pin 6 is connected to the positioning pin mounting screw hole 25 by interference thread, and the interference is not less than 0.1 mm.

[0041] Further, such as Figure 10 As shown, a hollow inner hole is opened inside one end of the positioning pin 6, and a thread is arranged on the outside. The positioning pin 6 has four elastic grooves opened on the outside along the axial direction, and the four elastic grooves are all distributed on the thread; a wrench groove is opened on the outer cylinder of the other end of the positioning pin 6.

[0042] The middle through slot 16 and the positioning frame 2 have a clearance fit of H7 / h6 in the width direction; the waist slots 17 on both sides have a clearance fit of H7 / f6 in the positioning frame 2.

[0043] The angled bevel 21 of the positioning frame and the angled bevel 20 of the moving frame form a dovetail-shaped space for clamping the journal of the part to be inspected 10. The part to be inspected 10 can be clamped or released by the lateral movement of the moving frame 3. A first handle 8 is installed at the end of the push plate 7, and through holes 22 are distributed at the positions of the convex teeth, which are fitted with the cylinder 19 at the top of the moving frame 3. By pulling the first handle 8 on the push plate 7, the moving frame 3 is driven to open and close the dovetail-shaped space on the positioning frame 2 to complete the installation, clamping or removal of the part to be inspected 10.

[0044] Specific implementation method of the utility model: the positioning frame 2 is fixed in the positioning groove 11 of the clamping body 1 by screw connection, and after each positioning frame angle bevel 21 is adjusted to the specified range, the screws are tightened to fix the positioning frame 2; the movable frame 3 is connected to the positioning frame sliding surface 15 by the guide pin 5 in a clearance fit manner, and the movable frame angle bevel 20 and the positioning frame angle bevel 21 form a dovetail-shaped space for clamping the parts to be inspected; the positioning pin 6 and the positioning pin mounting screw hole 25 adopt a transition fit tight fit threaded connection method, and the exposed length is adjusted according to the part structure, and its axial position can be fixed after adjustment; the push plate 7 is manually pushed and pulled by the first handle 8 to realize the disassembly and installation of the part to be inspected 10, and the axial positioning surface of the part to be inspected 10 is contacted and positioned with the end face of the positioning pin 6. Under the elastic force of the reset spring 4, the part to be inspected 10 is clamped. After the part to be inspected 10 is installed, the device as a whole is placed on the projector detection platform, and the square holes 12 and rectangular holes 12-1 distributed on the clamping body 1 are used for projection detection.

[0045] The advantages of the present invention are as follows: the device is an auxiliary device for detecting the dimensions and form and position tolerances of small-sized shaft parts on a digital projector at both ends. For shaft parts with a clamping diameter within the range of (0-12), a length not exceeding 50mm, and a detection accuracy of 0.005mm, the device can be used to complete batch detection of the dimensions and form and position tolerances of the structures at both ends.

[0046] In the absence of conflicts, those skilled in the art may combine the relevant technical features in the above examples according to actual circumstances to achieve corresponding technical effects. Specific descriptions of various combinations are omitted here.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, the terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0049] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to these embodiments, but is intended to conform to the broadest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A novel matrix type clamping and testing device for small-sized shaft parts, used for clamping and testing parts to be tested (10), characterized by: The invention comprises a clamping body (1), a positioning frame (2), a movable frame (3) and a push plate (7), wherein the positioning frame (2) is fixedly connected to the clamping body (1), the movable frame (3) is slidably connected to the positioning frame (2), and the push plate (7) is connected to the movable frame (3). The positioning frame (2) and the movable frame (3) form a dovetail-shaped space, and the push plate (7) drives the movable frame (3) to move longitudinally, thereby realizing the opening and closing of the dovetail-shaped space and achieving the clamping or loosening of the part to be inspected (10).

2. A novel matrix-type clamping and detection device for small-sized shaft parts according to claim 1, characterized in that: The clamp body (1) is a rectangular plate-like structure, with multiple groups of positioning grooves (11) distributed transversely and in parallel on the end surface of the clamp body (1), and the positioning frame (2) is positioned and connected to the clamp body (1) through each group of positioning grooves (11); multiple square holes (12) are evenly opened on the end surface of the clamp body (1) above each group of positioning grooves (11), and rectangular holes (12-1) are arranged at positions symmetrical to the square holes (12) on the lower side of each group of positioning grooves; first threaded holes (13) are respectively provided on the end surfaces of both sides of the clamp body (1), and the second handle (9) is connected in the first threaded hole (13).

3. A novel matrix-type clamping and detection device for small-sized shaft parts according to claim 1, characterized in that: The positioning frame (2) is a rectangular strip structure, and a plurality of grooves are evenly distributed on the upper end surface at equal intervals. The groove includes a positioning frame angle bevel (21), a positioning frame sliding surface (15) and a straight edge. The straight edge and the positioning frame sliding surface (15) are vertically arranged. The positioning frame angle bevel (21), the positioning frame sliding surface (15) and the straight edge form a right-angled trapezoidal groove with a small upper part and a large lower part. The right-angled trapezoidal groove is used to accommodate the part to be inspected (10); the positioning frame (2) is also provided with a guide pin hole (24) and a positioning pin mounting screw hole (25); the guide pin holes (24) are evenly distributed on the transverse center line of the positioning frame (2), and a guide pin (5) is installed in the guide pin hole (24). The movable frame (3) is slidably connected to the positioning frame sliding surface (15) by a clearance fit through the guide pin (5); the positioning pin mounting screw hole (25) is arranged on one side of the positioning frame angle bevel (21), and a positioning pin (6) is installed in the positioning pin mounting screw hole (25) for axial positioning of the part to be inspected (10).

4. A novel matrix-type clamping and detection device for small-sized shaft parts according to claim 1, characterized in that: The movable frame (3) is an L-shaped structure including a horizontal section and a vertical section; a through groove (16) is provided at the middle of the inner side below the horizontal section, and waist grooves (17) are provided on both sides of the horizontal section; the vertical section includes an upper straight section, a middle oblique section and a lower straight section; the upper straight section is a cylinder (19), and the push plate (7) is connected to the cylinder (19); the longitudinal section of the middle oblique section is an oblique right-angled trapezoidal structure with a larger upper portion and a smaller lower portion, and is composed of an angled surface (20) of the movable frame and a straight edge; a countersunk hole (18) is provided on the straight edge of the middle oblique section, and a reset spring (4) is provided in the countersunk hole (18); the angled surface (20) of the movable frame is enclosed by the positioning frame (2) for clamping the part to be inspected (10); the upper end of the lower straight section is fitted with the lower end of the middle oblique section, and the lower end of the lower straight section is vertically connected to one end of the horizontal section.

5. The novel matrix-type clamping and detection device for small-sized shaft parts according to claim 1, characterized in that: The push plates (7) are provided in multiple groups, and each group of push plates (7) comprises a horizontally arranged long strip plate, and a plurality of inverted L-shaped convex teeth are vertically and evenly distributed at intervals on the upper surface of the long strip plate, and a through hole (22) is provided at the free end position of the inverted L-shaped convex tooth, and the through hole (22) is connected to the movable frame (3); a second threaded hole (23) is provided at one end of the long strip plate, and a first handle (8) is connected in the second threaded hole (23).

6. A novel matrix-type clamping and detection device for small-sized shaft parts according to claim 3, characterized in that: The guide pin (5) and the guide pin hole (24) adopt an H7 / n6 interference fit.

7. A novel matrix-type clamping and detection device for small-sized shaft parts as claimed in claim 3, characterized in that: The positioning pin (6) is connected to the positioning pin mounting screw hole (25) by interference thread, and the interference amount is not less than 0.1 mm.

8. A novel matrix-type clamping and detection device for small-sized shaft parts according to claim 7, characterized in that: A hollow inner hole is provided inside one end of the positioning pin (6), and a thread is arranged on the outside, and four elastic grooves are arranged on the thread; a wrench groove is provided on the outer cylinder at the other end of the positioning pin (6).

9. A novel matrix-type clamping and detection device for small-sized shaft parts according to claim 4, characterized in that: The through slot (16) and the positioning frame (2) are matched with each other in the width direction with a clearance of H7 / h6; the waist slots (17) on both sides and the positioning frame (2) are matched with each other in the clearance of H7 / f6.

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