Positioning tool for precise segmentation of annular workpieces

Abstract

The utility model discloses a positioning tool of annular workpiece precision segmentation belongs to machining technical field, a positioning tool of annular workpiece precision segmentation, including positioning base, index fixed disc, gland, the index fixed disc detachable setting is in the positioning base upper portion, sets up first positioning ring groove on the top end surface of index fixed disc, sets up a plurality of first anti -interference slot mouth on the circumference direction on the outer lateral wall of index fixed disc, sets up second positioning ring groove on the bottom end surface of gland, sets up a plurality of second anti -interference slot mouth on the circumference direction on the outer lateral wall of gland, be provided with fastener between index fixed disc, gland. When cutting the annular workpiece using the tool of the utility model, since the annular workpiece is integrally connected and fixed with the index fixed disc, the gland, only the annular workpiece is segmented into a plurality of pieces in the segmentation process, but the relative position is not changed, so the relative accuracy before and after the annular workpiece segmentation can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, specifically relating to a positioning fixture for precision segmentation of annular workpieces. Background Technology

[0002] In the field of machining, it is necessary to divide a ring-shaped workpiece into several pieces along the circumference. Currently, the method for dividing a ring-shaped workpiece is to scribing lines on a dividing machine tool and then machining along the lines. This results in a large division error, and the stress deformation after cutting may cause the divided workpiece to move, resulting in relative position errors, affecting the division accuracy, and causing defective products.

[0003] Based on the above problems, this application proposes a positioning fixture for precision segmentation of annular workpieces, which realizes the accuracy and consistency of relative positions during the segmentation process of annular workpieces and improves segmentation accuracy. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a positioning fixture for precise division of annular workpieces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A positioning fixture for precision division of annular workpieces includes a positioning base, an indexing fixing plate, and a pressure cover;

[0007] The indexing fixing plate is detachably mounted on the upper part of the positioning base. A first positioning ring groove is provided on the top surface of the indexing fixing plate. A plurality of first anti-interference slots are provided on the outer side wall of the indexing fixing plate along the circumferential direction. The first anti-interference slots penetrate the upper and lower end faces of the indexing fixing plate. The first anti-interference slots extend radially along the indexing fixing plate and pass through the radial inner end face of the first positioning ring groove.

[0008] A second positioning ring groove is provided on the bottom end face of the pressure cap, and a plurality of second anti-interference grooves are provided on the outer side wall of the pressure cap along the circumferential direction. The second anti-interference grooves penetrate the upper and lower end faces of the pressure cap and extend radially along the pressure cap and pass over the radial inner end face of the second positioning ring groove.

[0009] Fasteners are provided between the indexing fixing plate and the pressure cover to press the annular workpiece between the first positioning ring groove and the second positioning ring groove.

[0010] Preferably, the positioning base is provided with an annular positioning boss, and the indexing fixing plate is provided with a positioning center hole that cooperates with the annular positioning boss in the middle.

[0011] Preferably, the radially outer side of the annular positioning boss in the positioning base is provided with an annular positioning plane that mates with the bottom surface of the indexing fixing plate.

[0012] Preferably, a plurality of vertically penetrating first positioning pin holes are uniformly arranged along the circumferential direction in the region located radially outside the first positioning ring groove in the indexing fixing plate.

[0013] A second positioning pin hole is provided on the positioning base;

[0014] After the second positioning pin hole is aligned vertically with the corresponding first positioning pin hole, the positioning pin is inserted to achieve a detachable positioning connection between the indexing fixing plate and the positioning base.

[0015] Preferably, the positioning pin includes a positioning cylinder for detachably positioning and connecting the indexing fixing plate and the positioning base, with a handle coaxially disposed at one end of the positioning cylinder.

[0016] Preferably, the fastener is a plurality of double-ended studs;

[0017] In the indexing and fixing plate, a plurality of first threaded holes corresponding one-to-one with double-ended studs are uniformly arranged along the circumferential direction in the area located radially inside the first positioning ring groove.

[0018] In the area located radially inside the second positioning ring groove in the pressure cap, a plurality of second threaded holes corresponding one-to-one with the double-ended studs are uniformly arranged along the circumferential direction.

[0019] After the upper and lower threads are aligned, double-ended studs are fitted into the first and second threaded holes to connect the indexing fixing plate and the pressure plate. Nuts are fitted onto the double-ended studs on the upper part of the pressure plate.

[0020] Preferably, when the corresponding first threaded hole and second threaded hole are aligned vertically, the corresponding first anti-interference groove and second anti-interference groove are also aligned vertically.

[0021] Preferably, the positioning base has a disc structure.

[0022] Preferably, one side of the positioning base is cut to form an alignment vertical surface parallel to its central axis, and the central axis of the positioning base is located on the vertical center surface of the alignment vertical surface.

[0023] Preferably, a radial groove extending vertically inward is provided at the center of the alignment vertical surface, and the radial groove passes through the upper and lower end faces of the positioning base.

[0024] When the second positioning pin hole is aligned vertically with any one of the first positioning pin holes, the centripetal groove is aligned vertically with one of the first anti-interference groove openings.

[0025] The beneficial effects of this utility model are:

[0026] (1) When the tooling of this utility model is used to cut the ring workpiece, since the ring workpiece is connected and fixed to the indexing plate and the pressure cover as a whole, only the ring workpiece is divided into multiple pieces during the division process, but the relative position is not changed. Therefore, the relative accuracy of the ring workpiece before and after division can be guaranteed.

[0027] (2) When the ring workpiece is cut and then disassembled using the tooling of this utility model, the ring workpiece is not easy to shake or fall off after being divided due to the limiting of the first positioning ring groove and the second positioning ring groove, which can effectively protect the surface quality of the workpiece.

[0028] (3) By setting up a vertical alignment surface and a centripetal groove, this utility model can determine the orientation of the central axis of the annular workpiece after the annular workpiece is stuck between the first positioning ring groove and the second positioning ring groove, thereby ensuring the cutting accuracy. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0030] Figure 1 This is a three-dimensional diagram illustrating the positioning fixture for the precision division of the annular workpiece according to this utility model and the fit between the annular workpiece after cutting.

[0031] Figure 2 This is a schematic cross-sectional view of the positioning fixture for the precision division of the annular workpiece according to this utility model and the engagement of the annular workpiece after cutting.

[0032] Figure 3 This is a schematic diagram of the positioning base in this utility model;

[0033] Figure 4 This is a schematic diagram of the indexing fixing plate in this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the pressure cap in this utility model;

[0035] Figure 6 This is a schematic diagram of the positioning pin in this utility model;

[0036] in:

[0037] 1. Positioning base; 11. Annular positioning boss; 12. Annular positioning plane; 13. Second positioning pin hole; 14. Alignment vertical plane; 15. Centripetal groove; 2. Indexing fixing plate; 21. First positioning ring groove; 22. First anti-interference groove; 23. Positioning center hole; 24. First positioning pin hole; 25. First threaded hole; 3. Pressure cap; 31. Second positioning ring groove; 32. Second anti-interference groove; 33. Second threaded hole; 4. Positioning pin; 41. Positioning cylinder; 42. Handle; 5. Double-ended stud; 51. Nut; 6. Annular workpiece. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] See appendix Figure 1 ~Appendix Figure 6 A positioning fixture for precision division of annular workpieces includes a positioning base 1, an indexing fixing plate 2, and a pressure cover 3.

[0040] The indexing fixing plate 2 is detachably mounted on the upper part of the positioning base 1. A first positioning ring groove 21 is provided on the top surface of the indexing fixing plate 2. The first positioning ring groove 21 cooperates with the bottom end of the annular workpiece 6. A plurality of first anti-interference slots 22 are provided on the outer side wall of the indexing fixing plate 2 along the circumferential direction. The first anti-interference slots 22 penetrate the upper and lower end faces of the indexing fixing plate 2. The first anti-interference slots 22 extend radially along the indexing fixing plate 2 and pass over the radial inner end face of the first positioning ring groove 21.

[0041] A second positioning ring groove 31 is provided on the bottom end face of the pressure cover 3. The second positioning ring groove 31 cooperates with the top end of the annular workpiece 6. A plurality of second anti-interference grooves 32 are provided on the outer side wall of the pressure cover 3 along the circumferential direction. The second anti-interference grooves 32 penetrate the upper and lower end faces of the pressure cover 3. The second anti-interference grooves 32 extend radially along the pressure cover 3 and pass over the radial inner end face of the second positioning ring groove 31.

[0042] Fasteners are provided between the indexing fixing plate 2 and the pressure cover 3 to press the annular workpiece 6 between the first positioning ring groove 21 and the second positioning ring groove 31.

[0043] The radial extension depth of the first anti-interference groove 22 and the second anti-interference groove 32 is such that the annular workpiece 6 can be completely cut off. That is, when the annular workpiece 6 is stuck between the first positioning ring groove 21 and the second positioning ring groove 31, the radial inner end face of the first anti-interference groove 22 and the radial inner end face of the second anti-interference groove 32 are both located on the radial inner side of the radial inner end face of the annular workpiece 6, so as to ensure that the annular workpiece 6 can be completely cut off along the corresponding anti-interference groove.

[0044] In addition, when the annular workpiece 6 is stuck between the first positioning ring groove 21 and the second positioning ring groove 31, the central axis of the annular workpiece 6 is located on the vertical center plane of the first anti-interference groove 22 and the second anti-interference groove 32 in the radial direction.

[0045] Preferably, the positioning base 1 is provided with an annular positioning boss 11, and the indexing fixing plate 2 is provided with a positioning center hole 23 that cooperates with the annular positioning boss 11 in the middle.

[0046] Preferably, the annular positioning boss 11 in the positioning base 1 is coaxially provided with an annular positioning plane 12 that mates with the bottom surface of the indexing fixing plate 2 on its radially outer side, so as to ensure that the indexing fixing plate 2 is set horizontally.

[0047] Preferably, a plurality of vertically penetrating first positioning pin holes 24 are uniformly arranged in the circumferential direction in the region located radially outside the first positioning ring groove 21 in the indexing fixing plate 2.

[0048] A second positioning pin hole 13 is provided on the positioning base 1;

[0049] After the second positioning pin hole 13 is aligned with the corresponding first positioning pin hole 24, the positioning pin 4 is inserted to realize the detachable positioning connection between the indexing fixing plate 2 and the positioning base 1.

[0050] When different first positioning pin holes 24 and second positioning pin holes 13 are engaged, the rotation angle of the indexing fixed plate 2 relative to the machine tool is different, thereby making the rotation angle of the annular workpiece 6 fixed between the indexing fixed plate 2 and the pressure plate 3 different, thus realizing the positioning of the rotation angle of the annular workpiece 6.

[0051] Preferably, the positioning pin 4 includes a positioning cylinder 41 for detachable positioning connection of the indexing fixing plate 2 and the positioning base 1, and a handle 42 coaxially disposed at one end of the positioning cylinder 41. The handle 42 is the gripping part when inserting or removing, and can be processed into a knurled surface to prevent slippage.

[0052] Preferably, the fastener is a plurality of double-ended studs 5;

[0053] In the indexing and fixing plate 2, a plurality of first threaded holes 25 corresponding one-to-one with the double-headed studs 5 are uniformly arranged along the circumferential direction in the area located radially inside the first positioning ring groove 21.

[0054] In the area located radially inside the second positioning ring groove 31, the pressure cap 3 is uniformly provided with a plurality of second threaded holes 33 that correspond one-to-one with the double-headed studs 5 along the circumferential direction.

[0055] After the upper and lower threads are aligned, double-ended studs 5 are fitted into the first threaded hole 25 and the second threaded hole 33 to achieve the connection between the indexing fixing plate 2 and the pressure plate 3. A nut 51 is fitted onto the double-ended stud 5 on the upper part of the pressure plate 3.

[0056] Preferably, when the corresponding first threaded hole 25 and second threaded hole 33 are aligned vertically, the corresponding first anti-interference groove 22 and second anti-interference groove 32 are also aligned vertically.

[0057] Preferably, the positioning base 1 has a disc structure.

[0058] Preferably, one side of the positioning base 1 is cut to form an alignment vertical surface 14 parallel to its central axis, and the central axis of the positioning base 1 is located on the vertical center surface of the alignment vertical surface 14.

[0059] Preferably, a radial groove 15 extending vertically inward is provided at the center of the alignment vertical surface 14, and the radial groove 15 passes through the upper and lower end faces of the positioning base 1.

[0060] When the second positioning pin hole 13 is vertically aligned with any one of the first positioning pin holes 24, the radial groove 15 is vertically aligned with one of the first anti-interference grooves 22. The vertical center plane of the radial groove 15 is coplanar with the vertical center plane of the corresponding vertically aligned first anti-interference groove 22. When the annular workpiece 6 is wedged between the first positioning ring groove 21 and the second positioning ring groove 31, the central axis of the annular workpiece 6 is located on the vertical center plane of the radial groove 15. Therefore, by aligning the vertical plane 14 and the radial groove 15, the orientation of the central axis of the annular workpiece 6 can be determined, thereby ensuring cutting accuracy.

[0061] In use, the alignment vertical surface 14 is perpendicular to the machine tool machining direction, so that the extension direction of the radial groove 15 is parallel to the machine tool machining direction. The radial groove 15 is vertically aligned with one of the first anti-interference grooves 22. Therefore, the extension direction of the radial groove 15 is the cutting direction, thus realizing that the cutting direction is parallel to the machine tool machining direction.

[0062] A positioning fixture for precise division of annular workpieces, the specific implementation of which is as follows:

[0063] The bottom end of the annular workpiece 6 is inserted into the first positioning ring groove 21 of the indexing fixing plate 2, and the top end of the annular workpiece 6 is inserted into the second positioning ring groove 31 of the pressure cover 3. Then, double-headed studs 5 are fitted into the first threaded hole 25 and the second threaded hole 33 after the upper and lower parts are aligned to realize the connection between the indexing fixing plate 2 and the pressure cover 3. The annular workpiece 6 is pressed between the first positioning ring groove 21 and the second positioning ring groove 31 by tightening the nut 51 to form an assembly. At this time, the annular workpiece 6 is stuck between the first positioning ring groove 21 and the second positioning ring groove 31, and the first anti-interference groove 22 and the second anti-interference groove 32 are aligned.

[0064] The assembly is then mounted on the positioning base 1. During assembly, the positioning center hole 23 on the indexing fixing plate 2 engages with the annular positioning boss 11.

[0065] Then rotate the assembly so that the second positioning pin hole 13 is aligned vertically with one of the first positioning pin holes 24. Insert the positioning pin 4 into the aligned second positioning pin hole 13 and the first positioning pin hole 24. At this time, the centripetal groove 15 is aligned vertically with one of the first anti-interference grooves 22. The first anti-interference grooves 22 and the second anti-interference grooves 32 that are aligned vertically with the centripetal groove 15 are the cutting positions.

[0066] Next, align vertical plane 14 with the machining direction of the machine tool.

[0067] Then, cut at the cutting position. After one cut, remove the positioning pin 4, rotate the assembly again, and align the second positioning pin hole 13 with the next first positioning pin hole 24 vertically. Insert the positioning pin 4 again into the aligned second positioning pin hole 13 and first positioning pin hole 24. At this time, the radial groove 15 is aligned vertically with the next first anti-interference groove 22, forming the next cutting position. Cut again at the cutting position. Repeat the above operation until the cutting is completed.

[0068] When the tooling of this application is used to cut the annular workpiece 6, since the annular workpiece 6 is integrally connected and fixed with the indexing fixing plate 2 and the pressure cover 3, only the annular workpiece 6 is divided into multiple pieces during the cutting process, but the relative positions are not changed. Therefore, the relative accuracy of the annular workpiece 6 before and after cutting can be guaranteed. During the splitting, the first positioning ring groove 21 and the second positioning ring groove 31 limit the movement, so the annular workpiece 6 after the splitting is not easy to shake or fall, which can effectively protect the surface quality of the workpiece.

[0069] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, they are not intended to limit the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the protection scope of the present utility model.

Claims

1. A positioning fixture for precision division of a ring-shaped workpiece, characterized in that, Includes positioning base (1), indexing fixing plate (2), and pressure cover (3); The indexing fixing plate (2) is detachably mounted on the upper part of the positioning base (1). A first positioning ring groove (21) is provided on the top surface of the indexing fixing plate (2). A plurality of first anti-interference grooves (22) are provided on the outer side wall of the indexing fixing plate (2) along the circumferential direction. The first anti-interference grooves (22) penetrate the upper and lower end faces of the indexing fixing plate (2). The first anti-interference grooves (22) extend radially along the indexing fixing plate (2) and pass over the radial inner end face of the first positioning ring groove (21). The bottom end face of the pressure cap (3) is provided with a second positioning ring groove (31), and a plurality of second anti-interference grooves (32) are provided on the outer side wall of the pressure cap (3) along the circumferential direction. The second anti-interference grooves (32) penetrate the upper and lower end faces of the pressure cap (3), and the second anti-interference grooves (32) extend radially along the pressure cap (3) and cross the radial inner end face of the second positioning ring groove (31). Fasteners are provided between the indexing fixing plate (2) and the pressure plate (3) to press the annular workpiece (6) between the first positioning ring groove (21) and the second positioning ring groove (31).

2. The positioning fixture for precision segmentation of annular workpieces as described in claim 1, characterized in that, The positioning base (1) is provided with an annular positioning boss (11), and the indexing fixing plate (2) is provided with a positioning center hole (23) that cooperates with the annular positioning boss (11) in the middle.

3. The positioning fixture for precision segmentation of annular workpieces as described in claim 2, characterized in that, The annular positioning boss (11) in the positioning base (1) is coaxially arranged with an annular positioning plane (12) that cooperates with the bottom surface of the indexing fixing plate (2) on the radial outer side.

4. The positioning fixture for precision segmentation of annular workpieces as described in claim 1, characterized in that, In the indexing fixing plate (2), a plurality of first positioning pin holes (24) are uniformly arranged along the circumferential direction in the region located on the radial outer side of the first positioning ring groove (21). A second positioning pin hole (13) is provided on the positioning base (1); After the second positioning pin hole (13) is aligned with the corresponding first positioning pin hole (24), the positioning pin (4) is inserted to realize the detachable positioning connection between the indexing fixing plate (2) and the positioning base (1).

5. The positioning fixture for precision segmentation of annular workpieces as described in claim 4, characterized in that, The positioning pin (4) includes a positioning cylinder (41) for detachably positioning the indexing plate (2) and the positioning base (1) and a handle (42) coaxially disposed at one end of the positioning cylinder (41).

6. The positioning fixture for precision segmentation of annular workpieces as described in claim 1, characterized in that, The fastener is a plurality of double-ended studs (5); In the indexing fixing plate (2), a plurality of first threaded holes (25) corresponding one-to-one with the double-headed studs (5) are uniformly arranged in the circumferential direction in the area located on the radial inner side of the first positioning ring groove (21). In the area located radially inside the second positioning ring groove (31) of the pressure cap (3), a plurality of second threaded holes (33) corresponding one-to-one with the double-headed studs (5) are uniformly arranged along the circumferential direction. After the upper and lower threads are aligned, double-ended studs (5) are fitted into the first threaded hole (25) and the second threaded hole (33) to realize the connection between the indexing fixing plate (2) and the pressure plate (3). A nut (51) is fitted on the double-ended stud (5) on the upper part of the pressure plate (3).

7. The positioning fixture for precision segmentation of annular workpieces as described in claim 6, characterized in that, When the corresponding first threaded hole (25) and second threaded hole (33) are aligned vertically, the corresponding first anti-interference groove (22) and second anti-interference groove (32) are aligned vertically.

8. The positioning fixture for precision division of annular workpieces as described in claim 1, characterized in that, The positioning base (1) has a disc structure.

9. The positioning fixture for precision segmentation of annular workpieces as described in claim 4, characterized in that, One side of the positioning base (1) is cut to form a vertical alignment surface (14) parallel to its central axis, and the central axis of the positioning base (1) is located on the vertical center surface of the vertical alignment surface (14).

10. The positioning fixture for precision segmentation of annular workpieces as described in claim 9, characterized in that, A radial groove (15) extending vertically inward is provided at the center of the vertical alignment surface (14), and the radial groove (15) passes through the upper and lower end faces of the positioning base (1). When the second positioning pin hole (13) is aligned vertically with any one of the first positioning pin holes (24), the centripetal groove (15) is aligned vertically with one of the first anti-interference grooves (22).

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