Machining positioning structure for rear rotating part

Abstract

The utility model discloses a machining positioning structure for a rear rotating piece, which comprises a fixed bottom plate, and a machining through groove is formed in the left part of the fixed bottom plate; a side supporting base is fixed to the position, on the right side of the machining through groove, of the top face of the fixed bottom plate, and a side supporting rod is fixed to the top face of the side supporting base. The middle of a rear rotating piece to be machined is located over the machining through groove, a right extending part is formed in the middle of the right side wall of the rear rotating piece and is an inclined plate part, the front wall face and the rear wall face of the right extending part are inclined wall faces, and a groove extending forwards is formed in the middle of the rear wall face of the right extending part. The vertical positioning hole is formed in the protruding part in the groove in the rear wall face of the right extending part of the rear rotating piece, the top end of the side supporting rod of the side supporting base arranged at the corresponding position of the fixed bottom plate is pressed against the inner end face of the vertical positioning hole, supporting and positioning are achieved, the supporting and fixing effect of the rear rotating piece is improved, the positioning precision of a workpiece is improved, and the production efficiency is improved. And defective products caused by improper placement of the workpieces are reduced.

Description

Technical Field:

[0001] The utility model relates to the technical field of metal machining equipment, and more specifically relates to a machining positioning structure for a rear rotating part. Background Art:

[0002] For the existing rear rotating parts of automobiles, such as Figure 1 as shown, a plurality of extending support parts are formed around the main body thereof. When machining, it is necessary to position, clamp and fix the extending support parts;

[0003] However, the existing rear rotating parts are generally positioned by three-point support. However, when the rear rotating parts are clamped, there is no limit positioning mechanism, which makes the position inaccurate when they are pressed and fixed, resulting in some surfaces at the machining position not being milled off during subsequent machining, and some parts being over-milled, resulting in material shortage, affecting the machining quality and greatly reducing the machining accuracy. Content of the Utility Model:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a machining positioning structure for a rear rotating part. A vertical positioning hole is arranged on the convex part in the groove on the rear wall surface of the right extending part of the rear rotating part, and the top end of the side support rod of the side support seat arranged at the corresponding position on the fixed bottom plate is pressed against the inner end surface of the vertical positioning hole to realize support and positioning, ensure the accurate clamping position, ensure the normal machining of subsequent machining, and ensure the machining accuracy of the rear rotating part.

[0005] The solution of the utility model to solve the above technical problems is:

[0006] A machining positioning structure for a rear rotating part includes a fixed bottom plate, and a machining through groove is formed in the left part of the fixed bottom plate;

[0007] On the top surface of the fixed bottom plate at the rear part on the left side of the machining through groove, a first pressing oil cylinder is fixed. Below the pressing block of the first pressing oil cylinder, a lower support pad is fixed on the top surface of the fixed bottom plate. On the right side at the front part of the machining through groove, a second pressing oil cylinder is fixed. Below the pressing block of the second pressing oil cylinder, a second lower support block is fixed on the top surface of the fixed bottom plate, and a second lower convex support part is fixed or formed on the top surface of the second lower support block;

[0008] On the fixed bottom plate at the rear part on the right side of the machining through groove, a third pressing oil cylinder is fixed. Below the pressing block of the third pressing oil cylinder, a third lower support block is fixed on the top surface of the fixed bottom plate, and a third convex support part is formed or fixed at the top end of the third lower support block;

[0009] On the top surface of the fixed bottom plate at the right side of the machining through groove, a side support seat is fixed, and a side support rod is fixed on the top surface of the side support seat;

[0010] The middle part of the rear rotating part to be processed is directly above the processing through groove. The first extended support part formed at the left rear of the rear rotating part is located between the pressing block of the first pressing oil cylinder and the lower support cushion block. The third extended support part is formed at the rear of the right side of the rear rotating part and is located between the third lower support block and the pressing block of the third pressing oil cylinder. The second extended support part at the right front of the rear rotating part is located between the pressing block of the second pressing oil cylinder and the second lower support block. An extended part is formed in the middle of the right side wall of the rear rotating part. The extended part is an inclined plate part, and both its front wall surface and rear wall surface are inclined wall surfaces. A groove extending forward is formed in the middle of the rear wall surface of the extended part. A convex part extending downward is formed on the upper part of the inner wall surface of the groove. A vertical positioning hole extending upward is formed in the middle of the bottom end surface of the convex part. The top of the side support rod is inserted into the vertical positioning hole.

[0011] On the middle part of the top surface of each of the first extended support part, the second extended support part and the third extended support part, an upper convex positioning part is formed, and on the bottom surface of each, a lower convex positioning part is formed. The top surface of the upper convex positioning part and the bottom surface of the lower convex positioning part are both flat surfaces. On the bottom surface of the pressing blocks of the first pressing oil cylinder, the second pressing oil cylinder and the third pressing oil cylinder, a pressing part is fixed or formed. The bottom surface of the pressing part presses against the top surface of the corresponding upper convex positioning part. The lower convex positioning part of the first extended support part presses against the top surface of the lower support cushion block. The bottom surface of the lower convex positioning part of the second extended support part presses against the top surface of the second lower convex support part. The bottom surface of the lower convex positioning part of the third extended support part presses against the top surface of the third convex support part.

[0012] On the top surface of the fixed bottom plate at the front part of the processing through groove, a front limit protection block is fixed. On the top surface of the front part of the fixed bottom plate at the left side of the processing through groove, a left protection block is fixed. Grooves are formed on the rear wall surface of the front limit protection block and the right side wall of the left protection block. The extended parts formed at the front and left sides of the rear rotating part are inserted into the corresponding grooves, and the outer side wall of the extended part is close to the inner side wall of the corresponding groove.

[0013] On the top surface of the fixed bottom plate at the right side of the processing through groove, a right stop block is fixed, and the left side wall of the right stop block is close to the right side wall of the rear rotating part.

[0014] On the top surface of the fixed bottom plate at the rear of the third extended support part, a rear baffle is fixed, and the front wall surface of the rear baffle is close to the rear side wall of the third extended support part.

[0015] The prominent effect of the present utility model is:

[0016] It sets a vertical positioning hole in the protruding part in the groove on the rear wall surface of the right extension part of the rear rotating part, and the top end of the side support rod of the side support seat set at the corresponding position on the fixed bottom plate presses against the inner end surface of the vertical positioning hole to achieve support and positioning. The push rod of the first push cylinder and the push rod of the second push cylinder clamp the first extension support part to achieve the second positioning. The two-position positioning ensures the accurate clamping position, ensures the normal machining of subsequent machining, and ensures the machining accuracy of the rear rotating part. Description of the drawings:

[0017] Figure 1 is the structural schematic diagram of the present utility model;

[0018] Figure 2 is Figure 1 the local structural schematic diagram of the angle change of

[0019] Figure 3 is the partial top view of the present utility model;

[0020] Figure 4 is the front view of the present utility model;

[0021] Figure 5 is the partial structural schematic diagram of the fixed bottom plate of the present utility model without installing the rear rotating part;

[0022] Figure 6 is Figure 5 the local structural schematic diagram of the angle change of

[0023] Figure 7 is the partial structural schematic diagram of the rear rotating part;

[0024] Figure 8 is Figure 7 the local structural schematic diagram of the angle change of

[0025] Figure 9 is Figure 5 the partial enlarged view of Specific implementation manner:

[0026] In the embodiment, as shown in Figures 1 to 9 a processing positioning structure for a rear rotating part includes a fixed bottom plate 10, and a processing through groove 11 is formed in the left part of the fixed bottom plate 10;

[0027] On the top surface of the fixed bottom plate 10 at the rear part on the left side of the processing through groove 11, a first pressing oil cylinder 20 is fixed. On the top surface of the fixed bottom plate 10 directly below the pressing block of the first pressing oil cylinder 20, a lower support pad 21 is fixed. At the right side at the front part of the processing through groove 11, a second pressing oil cylinder 30 is fixed. On the top surface of the fixed bottom plate 10 directly below the pressing block of the second pressing oil cylinder 30, a second lower support block 31 is fixed. On the top surface of the second lower support block 31, a second lower protruding support part 32 is fixed or formed;

[0028] A third pressing oil cylinder 40 is fixed on the fixed bottom plate 10 at the rear part on the right side of the processing through groove 11. A third lower support block 41 is fixed on the top surface of the fixed bottom plate 10 directly below the pressing block of the third pressing oil cylinder 40. A third convex support portion 42 is formed or fixed at the top end of the third lower support block 41.

[0029] A side support seat 50 is fixed on the top surface of the fixed bottom plate 10 at the right side of the processing through groove 11. A side support rod 51 is fixed on the top surface of the side support seat 50.

[0030] The middle part of the rear rotating part 100 to be processed is directly above the processing through groove 11. The first extended support portion 101 formed at the left rear part of the rear rotating part 100 is between the pressing block of the first pressing oil cylinder 20 and the lower support cushion block 21. A third extended support portion 103 is formed at the rear part on the right side of the rear rotating part 100, and it is between the third lower support block 41 and the pressing block of the third pressing oil cylinder 40. The second extended support portion 102 at the right front part of the rear rotating part 100 is between the pressing block of the second pressing oil cylinder 30 and the second lower support block 31. A right extended portion 104 is formed in the middle of the right side wall of the rear rotating part 100. The right extended portion 104 is an inclined plate portion, and its front wall surface and rear wall surface are both inclined wall surfaces. A groove 105 extending forward is formed in the middle of the rear wall surface of the right extended portion 104. A protruding portion 106 extending downward is formed on the upper inner wall surface of the groove 105. A vertical positioning hole 107 extending upward is formed in the middle of the bottom end surface of the protruding portion 106. The top of the side support rod 51 is inserted into the vertical positioning hole 107. The outer side wall at the top of the side support rod 51 is a conical wall surface, and its outer diameter at the top is smaller than that at the bottom. The upper inner side wall of the vertical positioning hole 107 is a conical wall surface. The outer side wall at the top of the side support rod 51 is pressed against the upper inner side wall of the vertical positioning hole 107. The two cooperate with each other. Through the cooperation and clamping of the side support rod 51 and the vertical positioning hole 107, the positioning and support of the right extended portion 104 are realized, and the processing accuracy is guaranteed.

[0031] The first pressing oil cylinder 20, the second pressing oil cylinder 30 and the third pressing oil cylinder 40 in this embodiment are all accessories that can be directly purchased on the market, and will not be elaborated here.

[0032] Furthermore, upper convex positioning portions 1 are formed in the middle of the top surfaces of the first extended support portion 101, the second extended support portion 102, and the third extended support portion 103, and lower convex positioning portions 2 are formed on the bottom surfaces thereof. The top surfaces of the upper convex positioning portions 1 and the bottom surfaces of the lower convex positioning portions 2 are both flat surfaces. Pressing portions are fixed or formed on the bottom surfaces of the pressing blocks of the first pressing oil cylinder 20, the second pressing oil cylinder 30, and the third pressing oil cylinder 40. The bottom surfaces of the pressing portions are pressed against the top surfaces of the corresponding upper convex positioning portions 1. The lower convex positioning portion 2 of the first extended support portion 101 is pressed against the top surface of the lower support cushion block 21. The bottom surface of the lower convex positioning portion 2 of the second extended support portion 102 is pressed against the top surface of the second lower convex support portion 32. The bottom surface of the lower convex positioning portion 2 of the third extended support portion 103 is pressed against the top surface of the third convex support portion 42.

[0033] Furthermore, reticulated grooves are formed on the top surfaces of the second lower convex support portion 32 and the third convex support portion 42, and reticulated grooves are also formed on the bottom surfaces of the pressing portions. The reticulated grooves are equivalent to forming a plurality of anti-slip convex portions on the top surfaces of the second lower convex support portion 32 and the third convex support portion 42, and the reticulated grooves can improve the anti-slip effect.

[0034] Furthermore, a first push cylinder 500 and a second push cylinder 510 (the first push cylinder 500 and the second push cylinder 510 are oil cylinders) are respectively fixed on the top surfaces of the fixed base plates 10 at both sides of the lower support cushion block 21. The first extended support portion 101 is located between the first push cylinder 500 and the second push cylinder 510. The ends of the push rods of the first push cylinder 500 and the second push cylinder 510 are pressed against the front side wall or the rear side wall of the lower part of the first extended support portion 101 to clamp and position the first extended support portion 101.

[0035] Furthermore, a front limit protection block 3 is fixed on the top surface of the fixed base plate 10 at the front part of the processing through groove 11, and a left protection block 4 is fixed on the top surface of the fixed base plate 10 at the front part on the left side of the processing through groove 11. Grooves are formed on the rear wall surface of the front limit protection block 3 and the right side wall of the left protection block 4. The front part and the left side extension part formed on the rear rotating part 100 are inserted into the corresponding grooves, and the outer side wall of the extension part is close to the inner side wall of the corresponding groove.

[0036] Furthermore, a right stop block 5 is fixed on the top surface of the fixed base plate 10 at the right side of the processing through groove 11, and the left side wall of the right stop block 5 is close to the right side wall of the rear rotating part 100.

[0037] Furthermore, a rear baffle 6 is fixed on the top surface of the fixed base plate 10 at the rear of the third extended support portion 103, and the front wall surface of the rear baffle 6 is close to the rear side wall of the third extended support portion 103.

[0038] The front limit protection block 3, the left protection block 4, the right stop block 5 and the rear baffle 6 can all play a protective role.

[0039] Furthermore, a heightening block is fixed to the bottom surfaces of the second pressing oil cylinder 30 and the third pressing oil cylinder 40, and the bottom surface of the heightening block is fixed to the top surface of the fixed bottom plate 10.

[0040] When this embodiment is in use, first, the rear rotating part 100 is placed on the corresponding lower support cushion block 21, the second lower convex support part 32, and the third convex support part 42. The top of the side support rod 51 is inserted into the vertical positioning hole 107, and the outer side wall of the top end of the side support rod 51 is pressed against the upper inner side wall of the vertical positioning hole 107. The two cooperate with each other, and through the cooperation and clamping of the side support rod 51 and the vertical positioning hole 107, the positioning of the right extension part 104 is realized.

[0041] At the same time, the ends of the push rods of the first push cylinder 500 and the second push cylinder 510 (the end faces are spherical surfaces to reduce friction) push, so that the lower part of the first extension support part 101 is clamped between the ends of the two push rods, realizing two-point positioning, thereby ensuring the subsequent processing accuracy.

[0042] Then, through the pressing blocks of the first pressing oil cylinder 20, the second pressing oil cylinder 30 and the third pressing oil cylinder 40 pressing downwards, the first extension support part 101, the second extension support part 102 and the third extension support part 103 are clamped and fixed. The positioning is accurate, thereby ensuring the subsequent processing accuracy.

[0043] At the same time, all the structures and components that are mirror-symmetrical to the left part are arranged on the right part of the fixed bottom plate 10 of this embodiment, which will not be elaborated here. Thus, two left-right symmetrical rear rotating parts 100 can be clamped simultaneously for subsequent processing, and the processing effect is good.

[0044] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A processing and positioning structure for a rear-rotating part, comprising a fixed bottom plate (10), characterized in that: A processing through groove (11) is formed in the left part of the fixed bottom plate (10); A side support seat (50) is fixed on the top surface of the fixed bottom plate (10) at the right side of the processing through groove (11), and a side support rod (51) is fixed on the top surface of the side support seat (50); The middle part of the rear rotating part (100) to be processed is directly above the processing through groove (11). A right extension part (104) is formed in the middle of the right side wall of the rear rotating part (100). The right extension part (104) is an inclined plate part, and its front wall surface and rear wall surface are both inclined wall surfaces. A groove (105) extending forward is formed in the middle of the rear wall surface of the right extension part (104). A convex part (106) extending downward is formed on the upper part of the inner wall surface of the groove (105). A vertical positioning hole (107) extending upward is formed in the middle of the bottom end surface of the convex part (106). The top of the side support rod (51) is inserted into the vertical positioning hole (107). The top end of the side support rod (51) is a conical wall surface, and its outer side wall is pressed against the inner side wall of the top of the vertical positioning hole (107).

2. The machining positioning structure for a rear rotating part according to claim 1, characterized in that: A first pressing oil cylinder (20) is fixed on the top surface of the fixed bottom plate (10) at the left rear part of the processing through groove (11). A lower support cushion block (21) is fixed on the top surface of the fixed bottom plate (10) directly below the pressing block of the first pressing oil cylinder (20). A second pressing oil cylinder (30) is fixed at the right side of the front part of the processing through groove (11). A second lower support block (31) is fixed on the top surface of the fixed bottom plate (10) directly below the pressing block of the second pressing oil cylinder (30). A second lower convex support part (32) is fixed or formed on the top surface of the second lower support block (31); The first extension support part (101) formed at the left rear part of the rear rotating part (100) is located between the pressing block of the first pressing oil cylinder (20) and the lower support cushion block (21). A third extension support part (103) is formed at the rear part of the right side of the rear rotating part (100), and it is located between the third lower support block (41) and the pressing block of the third pressing oil cylinder (40). The second extension support part (102) at the front right part of the rear rotating part (100) is located between the pressing block of the second pressing oil cylinder (30) and the second lower support block (31). Upper convex positioning parts (1) are formed in the middle of the top surfaces of the first extension support part (101), the second extension support part (102), and the third extension support part (103), and lower convex positioning parts (2) are formed on the bottom surfaces. The top surfaces of the upper convex positioning parts (1) and the bottom surfaces of the lower convex positioning parts (2) are both flat surfaces. A third pressing oil cylinder (40) is fixed on the fixed bottom plate (10) at the rear part of the right side of the processing through groove (11). A third lower support block (41) is fixed on the top surface of the fixed bottom plate (10) directly below the pressing block of the third pressing oil cylinder (40). A third convex support part (42) is formed or fixed at the top end of the third lower support block (41); The bottom surfaces of the pressing blocks of the first pressing oil cylinder (20), the second pressing oil cylinder (30), and the third pressing oil cylinder (40) are all fixed or formed with pressing portions, and the bottom surfaces of the pressing portions are pressed against the top surfaces of the corresponding upper convex positioning portions (1). The lower convex positioning portion (2) of the first extending support portion (101) is pressed against the top surface of the lower support cushion block (21). The bottom surface of the lower convex positioning portion (2) of the second extending support portion (102) is pressed against the top surface of the second lower convex support portion (32). The bottom surface of the lower convex positioning portion (2) of the third extending support portion (103) is pressed against the top surface of the third convex support portion (42).

3. A processing and positioning structure for a rear rotating part according to claim 1, characterized in that: The top surfaces of the second lower convex support portion (32) and the third convex support portion (42) are both formed with reticulated grooves.

4. A processing and positioning structure for a rear rotating part according to claim 2, characterized in that: The bottom surfaces of the pressing portions are all formed with reticulated grooves.

5. A processing and positioning structure for a rear rotating part according to claim 1, characterized in that: On the top surfaces of the fixed bottom plates (10) at both sides of the lower support cushion block (21), a first pushing cylinder (500) and a second pushing cylinder (510) are respectively fixed. The first extending support portion (101) is located between the first pushing cylinder (500) and the second pushing cylinder (510), and the lower part of the first extending support portion (101) is clamped between the ends of the push rods of the first pushing cylinder (500) and the second pushing cylinder (510).

6. The machining positioning structure for a rear rotating part according to claim 1, characterized in that: On the top surface of the fixed bottom plate (10) at the front part of the processing through groove (11), a front limit protection block (3) is fixed. On the top surface of the fixed bottom plate (10) at the front part on the left side of the processing through groove (11), a left side protection block (4) is fixed. Grooves are formed on the rear wall surface of the front limit protection block (3) and the right side wall of the left side protection block (4). The front part and the extending part formed on the left side of the rear rotating part (100) are inserted into the corresponding grooves, and the outer side wall of the extending part is close to the inner side wall of the corresponding groove.

7. A processing and positioning structure for a rear rotating part according to claim 1, characterized in that: On the top surface of the fixed bottom plate (10) at the right side of the processing through groove (11), a right stop block (5) is fixed, and the left side wall of the right stop block (5) is close to the right side wall of the rear rotating part (100).

8. A processing and positioning structure for a rear rotating part according to claim 1, characterized in that: On the top surface of the fixed bottom plate (10) at the rear part of the third extending support portion (103), a rear baffle (6) is fixed, and the front wall surface of the rear baffle (6) is close to the rear side wall of the third extending support portion (103).

9. The machining positioning structure for a rear rotating part according to claim 1, characterized in that: On the bottom surfaces of the second pressing oil cylinder (30) and the third pressing oil cylinder (40), heightening blocks are fixed, and the bottom surfaces of the heightening blocks are fixed on the top surface of the fixed bottom plate (10).

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