Clamp for machining automobile gearbox shell

Abstract

The utility model relates to a clamp for processing an automobile gearbox shell, which is characterized by comprising a base, the base is a cuboid, the upper surface of the base is a plane, and rod holes are arranged at two ends of the longitudinal center of the base. The lower ends of the rod holes are connected with oil cylinders, and piston rods of the oil cylinders face upwards and movably stretch into the corresponding rod holes. A rectangular supporting plate is arranged on the base, the area of the supporting plate is smaller than that of the upper surface of the base, and supporting blocks are connected between the two ends of the longitudinal center of the supporting plate and the base. Column holes are formed in the two ends, corresponding to the rod holes, of the supporting plate, and stand columns are arranged in the column holes. The lower ends of the stand columns penetrate through the corresponding column holes from above the supporting plate and then are connected with the base. The stand column is tubular, a pull rod is arranged in the stand column, and the stand column and the pull rod are in sliding fit. The lower ends of the pull rods are connected with piston rods of the oil cylinders, the upper ends of the pull rods extend out of the upper ends of the stand columns and are connected with pressing blocks, rod holes are formed in the pressing blocks, and the pressing blocks are sleeved on the pull rods through the rod holes and are screwed with nuts. The utility model not only is convenient to operate, but also has higher production efficiency. The positioning device is suitable for positioning when the automobile gearbox is machined.

Description

TECHNICAL FIELD

[0001] The utility model relates to a clamp, in particular to a clamp used for positioning automobile gearbox shell during machining. BACKGROUND

[0002] In the field of automobile gearbox shell machining, the automobile gearbox shell needs to be clamped and positioned during machining. The traditional method is to first place the automobile gearbox shell on a workbench, then set an oil cylinder above each of the opposite sides of the automobile gearbox shell, press the automobile gearbox shell from both sides by the two oil cylinders, and then machine the opposite two sides of the automobile gearbox shell without oil cylinders. Then, the two oil cylinders are removed, and another two oil cylinders are used to press on the two sides of the automobile gearbox shell that have been machined, and the other two sides are machined. As can be seen, two processes of disassembling and assembling the oil cylinders are required to complete the machining of the four sides of the automobile gearbox shell. Although the above method can achieve clamping and positioning of the automobile gearbox shell, it is not only troublesome to operate, but also has low production efficiency. SUMMARY

[0003] The utility model provides a clamp for automobile gearbox shell machining. The clamp for automobile gearbox shell machining is not only easy to operate, but also has high production efficiency.

[0004] The above problems solved by the utility model are solved by the following technical solutions:

[0005] The clamp for automobile gearbox shell machining has the following characteristics: a base, which is a cuboid, has a flat upper surface and two rod holes at the ends of the longitudinal center. An oil cylinder is connected to the lower end of each rod hole, and the piston rod of the oil cylinder is upwardly and movably inserted into the corresponding rod hole. A supporting plate is provided on the base, which is rectangular and has an area smaller than the upper surface of the base. The two ends of the longitudinal center of the supporting plate are connected to the base by supporting blocks. The two ends of the supporting plate corresponding to the rod holes have column holes, and a column is provided in the column hole. The lower end of the column is connected to the base after passing through the corresponding column hole above the supporting plate. The column is tubular, and a pull rod is provided in the column and slidably connected to the column. The lower end of the pull rod is connected to the piston rod of the oil cylinder, and the upper end of the pull rod extends out of the upper end of the column and is connected to a pressing block. The pressing block has a rod hole, and the pull rod is sleeved in the rod hole and screwed with a nut.

[0006] In a further improved scheme of the utility model, a cover plate is provided on the pull rod between the pressing block and the column. The cover plate is a circular plate with a column hole. The outer diameter and inner diameter of the cover plate are adapted to the outer diameter of the column and the diameter of the pull rod, respectively. The cover plate is sleeved on the pull rod and connected to the upper end of the column by the column hole.

[0007] The further improved scheme of the utility model discloses, the longitudinal outer side of the stand is provided with two planes on both sides, and the two planes are parallel to each other. The longitudinal center of the two planes is provided with a first radial pin hole, and a second radial pin hole is arranged on the corresponding pull rod of the first radial pin hole. A pin shaft is arranged in the first radial pin hole and the second radial pin hole.

[0008] The further improved scheme of the utility model discloses, the first radial pin hole and the second radial pin hole are both flat holes, and the pin shaft is a flat shaft which is convenient to cooperate with the flat hole.

[0009] The further improved scheme of the utility model discloses, the base comprises a lower bottom plate and an upper bottom plate, the lower bottom plate and the upper bottom plate are both rectangular, the lower bottom plate is larger than the upper bottom plate, and the four edges of the lower bottom plate and the upper bottom plate are all connected with a cushion block. The area of the supporting plate is smaller than the area of the upper bottom plate, and the two ends of the longitudinal center of the supporting plate are connected to the upper bottom plate by means of the first supporting block.

[0010] The further improved scheme of the utility model discloses, one long side of the supporting plate is provided with two transverse protrusions at both ends, the upper bottom plate adjacent to the two transverse protrusions is provided with a first supporting head. The first supporting head is close to the inner side of the corresponding transverse protrusion. The upper bottom plate outside the other long side of the supporting plate is provided with a diamond pin and a round pin respectively, and the upper bottom plate adjacent to the diamond pin and the round pin is provided with a second supporting block.

[0011] The further improved scheme of the utility model discloses, the upper bottom plate between the two second supporting blocks is provided with a second supporting head.

[0012] The further improved scheme of the utility model discloses, the pressing block is provided with a lifting handle.

[0013] From the above scheme, it can be seen that, during work, the nut and the pressing block are first removed, the through hole in the middle of the longitudinal two ends of the gearbox shell to be machined is aligned with the two pull rods and the stand, the gearbox is placed on the base, and the first supporting head, the second supporting head, the diamond pin, the round pin and the supporting block are respectively positioned at the corresponding positions of the four sides of the bottom of the gearbox shell to be machined. Then, the two pressing blocks are respectively sleeved on the upper ends of the two pull rods, and the nut is tightened. After that, the oil cylinder is started, the piston rod of the oil cylinder is retracted, and the pressing block is pulled down by the pull rod, so that the gearbox shell is pressed, and the clamping and positioning of the gearbox shell to be machined are realized. Compared with the background art, only one process is needed, and the clamping and positioning of the gearbox shell to be machined can be realized. The operation is relatively convenient, and the production efficiency can be greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the clamp for machining the gearbox shell of the automobile of the utility model;

[0015] Figure 2 It is Figure 1 a top view schematic diagram;

[0016] Figure 3 is Figure 1 A-A cross-sectional view schematic diagram of;

[0017] Figure 4 is Figure 3 B-B cross-sectional view schematic diagram

[0018] Figure 5 is Figure 4 I enlarged schematic diagram at. DETAILED DESCRIPTION

[0019] As Figures 1-5 shown, the utility model discloses a fixture for automobile gearbox shell processing contains base, the base is cuboid, its upper surface is plane, and the both ends of longitudinal center are processed with rod hole. The lower end of rod hole is connected with oil cylinder 15, and the piston rod 151 of oil cylinder 15 is upwards and shows activity and extends into corresponding rod hole. The base is provided with the supporting plate 6 on, and the supporting plate 6 is rectangular, and its area is less than the upper surface of base, and the both ends of longitudinal center are connected with the support block 13 between base. The both ends of corresponding supporting plate 6 of rod hole are processed with column hole, and the column hole is all installed with stand 7. The lower end of stand 7 is connected with base after passing corresponding column hole from the above of supporting plate 6. The stand 7 is tubular, and the pull rod 9 is installed in and the both are sliding fit. The lower end of pull rod 9 is connected with the piston rod 151 of oil cylinder 15, and the upper end extends outside the upper end of stand 7 and is connected with pressure block 10, and the pressure block 10 is all processed with rod hole on, and is sleeved on pull rod 9 by means of the rod hole and is screwed with nut 11.

[0020] The pull rod 9 between pressure block 10 and stand 7 is all provided with cover plate 8, and the cover plate 8 is round plate, and has column hole on, and the outer diameter and inner diameter are adapted with the outer diameter of stand 7 and the diameter of pull rod 9 respectively, and is sleeved on pull rod 9 by means of the column hole on and is connected with the upper end of stand 7.

[0021] The longitudinal lateral surface of stand 7 is all processed with plane 71, and the two planes 71 are parallel. The longitudinal center of two planes 71 is all processed with first radial pin hole, and the corresponding pull rod 9 is all processed with second radial pin hole. The first and second radial pin holes are penetrated with pin shaft 17.

[0022] Wherein, the first and second radial pin holes are all flat holes, and the pin shaft 17 is flat shaft convenient for cooperating with flat hole.

[0023] The base contains lower bottom plate 1 and upper bottom plate 3, and the lower bottom plate 1 and upper bottom plate 3 are all rectangular, and the lower bottom plate 1 is greater than the upper bottom plate 3, and the four edges of them are all connected with cushion block 2. The area of supporting plate 6 is less than the area of upper bottom plate 3, and the both ends of longitudinal center are connected together by first support block 13 between upper bottom plate 3.

[0024] The two ends of one long side of the supporting plate 6 are provided with transverse protrusions 61, and the upper base plate 3 adjacent to the transverse protrusions 61 is provided with first supporting heads 14; the first supporting heads 14 are in close contact with the inner side of the corresponding transverse protrusions 61. The other long side of the supporting plate 6 is provided with a diamond pin 5 and a round pin 51 on the upper base plate 3 outside the two ends, and the upper base plate 3 adjacent to the diamond pin 5 and the round pin 51 is provided with second supporting blocks 4.

[0025] The upper base plate 3 between the two second supporting blocks 4 is connected with second supporting heads 141.

[0026] In operation, the nuts 11 and the pressing blocks 10 are removed first, the through holes in the middle of the longitudinal ends of the gearbox shell to be machined are aligned with the two pull rods 9 and the column 7, the gearbox shell to be machined is placed on the base, and the first supporting heads 14, the second supporting heads 141, the diamond pin 5, the round pin 51 and the supporting blocks 4 are respectively placed on the corresponding positions around the bottom of the gearbox shell to be machined. Then, the two pressing blocks 10 are respectively sleeved on the upper ends of the two pull rods 9, and the nuts 11 are tightened. After that, the oil cylinder 15 is started, the piston rod 151 of the oil cylinder 15 is retracted, the pressing blocks 10 are driven by the pull rods 9 to be pulled down, the gearbox to be machined is pressed, and the clamping and positioning of the gearbox shell to be machined are realized. Compared with the prior art, the clamping and positioning of the gearbox shell to be machined can be realized in only one process.

Claims

1. A fixture for machining an automobile transmission housing, characterized by: The base is cuboid, the upper surface is plane, and the two ends of the longitudinal center have rod holes; the lower end of the rod hole is connected with an oil cylinder (15), the piston rod (151) of the oil cylinder (15) is upward and is movably inserted into the corresponding rod hole; the base has a supporting plate (6) thereon, the supporting plate (6) is rectangular, the area is smaller than the upper surface of the base, and the two ends of the longitudinal center are connected with supporting blocks (13) between the base; the two ends of the supporting plate (6) corresponding to the rod hole have column holes, and the column holes have columns (7); the lower end of the column (7) is connected with the base after passing through the corresponding column hole from above the supporting plate (6); the column (7) is tubular, has a pull rod (9) therein, and the two are in sliding fit; the lower end of the pull rod (9) is connected with the piston rod (151) of the oil cylinder (15), the upper end of the pull rod (9) is outside the upper end of the column (7) and is connected with a pressing block (10), the pressing block (10) has a rod hole, the pressing block (10) is sleeved on the pull rod (9) through the rod hole and is screwed with a nut (11).

2. The fixture for machining of an automobile transmission housing according to claim 1, characterized in that: The pull rod (9) between the pressing block (10) and the column (7) has a cover plate (8), the cover plate (8) is a circular plate, has a column hole, the outer diameter and the inner diameter of the cover plate (8) are matched with the outer diameter of the column (7) and the diameter of the pull rod (9) respectively, the cover plate (8) is sleeved on the pull rod (9) through the column hole and is connected with the upper end of the column (7).

3. The fixture for machining of an automobile transmission housing according to claim 1, characterized in that: The longitudinal outer side of the column (7) has two planes (71), the two planes (71) are parallel; the longitudinal center of the two planes (71) has a first radial pin hole, the pull rod (9) corresponding to the first radial pin hole has a second radial pin hole; the first radial pin hole and the second radial pin hole are penetrated by a pin shaft (17).

4. The fixture for machining of an automobile transmission housing according to claim 3, characterized in that: The first radial pin hole and the second radial pin hole are flat holes, and the pin shaft (17) is a flat shaft which is convenient for cooperation with the flat holes.

5. The jig for processing of an automobile transmission case according to any one of claims 1 to 4, characterized in that: The base has a lower bottom plate (1) and an upper bottom plate (3), the lower bottom plate (1) and the upper bottom plate (3) are rectangular, and the lower bottom plate (1) is larger than the upper bottom plate (3), and the four edges of the lower bottom plate (1) and the upper bottom plate (3) are connected with a cushion block (2); the area of the supporting plate (6) is smaller than the area of the upper bottom plate (3), and the two ends of the longitudinal center are connected with the upper bottom plate (3) through the first supporting block (13).

6. The fixture for machining of an automobile transmission housing according to claim 5, characterized in that: One long edge of the supporting plate (6) has two transverse protrusions (61), the upper bottom plate (3) adjacent to the two transverse protrusions (61) has a first supporting head (14); the first supporting head (14) is close to the inner side of the corresponding transverse protrusion (61); the upper bottom plate (3) outside the other long edge of the supporting plate (6) has a diamond pin (5) and a circular pin (51) respectively, and the upper bottom plate (3) adjacent to the diamond pin (5) and the circular pin (51) has a second supporting block (4).

7. The fixture for machining of an automobile transmission housing according to claim 6, characterized in that: The upper bottom plate (3) between the two second supporting blocks (4) is connected with a second supporting head (141).

8. The fixture for machining of an automobile transmission housing according to any one of claims 1, 2, 3, 4, 6, 7, characterized in that: The pressing block (10) is connected with a handle (12).

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