Machining clamp for left box cover assembly

Abstract

The utility model discloses a left box cover assembly machining clamp which is characterized in that the left box cover assembly machining clamp comprises a bottom plate, a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate are both vertically arranged on the bottom plate, one side of the bottom plate is provided with a first clamping station, one side face of the first vertical plate is provided with a second clamping station, one side face of the second vertical plate is provided with a third clamping station, and the third clamping station is provided with a third clamping station. Wherein the first clamping station comprises a plurality of first positioning seats, a first lever pressing cylinder is arranged above at least three first positioning seats, a first cylindrical pin and a first diamond pin are arranged at one group of opposite angles of the first clamping station, and two first positioning guide pins are arranged at the other group of opposite angles of the first clamping station; the clamp has the advantages that the clamp is simple in structure and convenient to clamp, three products can be clamped at the same time, machining efficiency is improved, the problem of poor machining quality caused by repeated replacement of the clamp is solved, the clamping height of the products is greatly reduced, and the problem that the clamping space of machining equipment is limited can be solved.

Description

Technical Field

[0001] This utility model relates to the field of machining fixtures, specifically to a machining fixture for a left box cover assembly. Background Technology

[0002] The left gearbox cover assembly is a component of a car's manual gearbox. The main body of the left gearbox cover assembly is cast, and holes need to be machined on the back and both sides. Due to the different positions of the holes, the direction of force during machining is different. Therefore, three sets of fixtures need to be designed according to the machining process, which greatly increases the fixture development cycle and the fixture cost is high. The product requires multiple fixture changes when using three sets of fixtures, which will further extend the machining cycle. The repeated positioning of the fixtures will also affect the product machining quality. Moreover, when machining the deep oil passages on the left gearbox cover assembly, the existing fixtures require a large installation space for the machining equipment due to the long tool holder and the height of the product. The existing equipment cannot meet the machining requirements. Therefore, a completely new fixture needs to be designed to solve the above problems. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a left box cover assembly machining fixture with three clamping stations, which can meet the machining requirements in three directions, and can meet the equipment installation space requirements when machining deep hole oil passages.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A left box cover assembly machining fixture, characterized in that: it includes a base plate, a first upright plate, and a second upright plate, both of which are erected on the base plate. One side of the base plate has a first clamping station, one side of the first upright plate has a second clamping station, and one side of the second upright plate has a third clamping station. The first clamping station includes multiple first positioning seats, the top surface of which is flat. At least three of the first positioning seats are equipped with first lever clamping cylinders above them. Each first positioning seat is mounted on the base plate via a positioning pad. A first cylindrical pin and a first diamond-shaped pin are arranged diagonally at one set of the first clamping station, and two first positioning guide pins are arranged diagonally at the other set of the first clamping station. The second clamping station... The third clamping station is provided with multiple second positioning seats supporting the edge of the left cover assembly. At least three of the second positioning seats are provided with second lever clamping cylinders facing each other. Two second positioning guide pins are provided on a set of diagonal corners of the second clamping station. A second cylindrical pin and a second diamond pin are provided on a set of diagonal corners of the second clamping station, so that one oil passage of the left cover assembly faces directly upward. The third clamping station is provided with multiple third positioning seats supporting the edge of the left cover assembly. At least three of the third positioning seats are provided with third lever clamping cylinders facing each other. Two third positioning guide pins are arranged on a set of diagonal corners of the third clamping station. A third cylindrical pin and a third diamond pin are arranged vertically at intervals in the third clamping station, so that another oil passage of the left cover assembly faces directly upward.

[0006] Furthermore, both the second and third clamping stations are equipped with two auxiliary positioning rods at their lower parts.

[0007] Furthermore, both the first cylindrical pin and the first diamond-shaped pin are mounted on the base plate via the positioning pad.

[0008] Furthermore, the first positioning guide pin is mounted on the base plate via the positioning pad.

[0009] Furthermore, the base plate has clearance grooves corresponding to the second clamping station and the third clamping station.

[0010] Furthermore, the second lever clamping cylinder is embedded in the first upright plate.

[0011] Furthermore, the third lever clamping cylinder is embedded in the second upright plate.

[0012] The advantages of this utility model include: the fixture has a simple structure and is easy to clamp. It can clamp three products at the same time, satisfy the simultaneous processing in three directions, improve processing efficiency, avoid the problem of poor processing quality caused by repeated fixture replacement, and greatly reduce the clamping height of the products, thus meeting the problem of limited clamping space in machining equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of an embodiment of the present invention. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0016] One such Figure 1-2 The machining fixture for the left cover assembly shown includes a base plate 1, a first upright plate 2, and a second upright plate 3. Both the first upright plate 2 and the second upright plate 3 are erected on the base plate 1. One side of the base plate 1 has a first clamping station for horizontally clamping the left cover assembly for machining the holes and mating surfaces on the outer end face of the left cover assembly. One side of the first upright plate 2 has a second clamping station for vertically clamping the left cover assembly for vertical machining of one of its oil passages. One side of the second upright plate 3 has a third clamping station for vertically clamping the left cover assembly, keeping its other oil passage vertical for machining.

[0017] The first clamping station includes multiple first positioning seats 4 for supporting the inner edge of the left cover assembly. The top surface of the first positioning seats 4 is flat and at the same horizontal height. Three of the first positioning seats 4, arranged in a triangle, are equipped with first lever clamping cylinders 9. Both the first positioning seats 4 and the first lever clamping cylinders 9 are mounted on the base plate 1 via positioning pads 5, ensuring minimal difference in the starting height of the cutting tool during machining at each clamping station. A set of first cylindrical pins 6 and first diamond pins 7 are arranged diagonally at the first clamping station, both mounted on the base plate 1 via positioning pads 5. This achieves precise positioning of the left cover assembly using two pins on one side. Another set of two first positioning guide pins 8 are arranged diagonally at the first clamping station, mounted on the base plate 1 via positioning pads 5. The protrusion height of the first positioning guide pin 8 is higher than that of the first cylindrical pin 6, and the front end of the first guide positioning pin 8 is tapered, which facilitates the rough positioning of the left box cover assembly during clamping.

[0018] The second clamping station is located on the side of the first upright plate 2 facing away from the first clamping station. This second clamping station is equipped with multiple second positioning seats 10 supporting the edge of the left cover assembly. The supporting end face of each second positioning seat 10 is flat, and the end faces of the multiple second positioning seats 10 are located on the same vertical plane. At least three of the second positioning seats 10 are directly opposite each other, and the second lever clamping cylinders 11 are embedded in the first upright plate 2. Two second positioning guide pins 12 are provided at a set of diagonals of the second clamping station for coarse positioning of the left cover assembly. The structure of the second positioning guide pins 12 is the same as that of the first positioning guide pins 8. A second cylindrical pin 13 and a second diamond-shaped pin 14 are also provided at a set of diagonals of the second clamping station. Similarly, by positioning with two pins on one side, one oil passage of the left cover assembly faces directly upwards.

[0019] Similar to the second clamping station, the third clamping station is equipped with multiple third positioning seats 15 supporting the edge of the left cover assembly. At least three of the third positioning seats 15 are directly opposite each other, and the third lever clamping cylinders 16 are embedded in the second vertical plate 3. Two third positioning guide pins 17 are arranged diagonally in the third clamping station, and third cylindrical pins 18 and third diamond pins 19 are arranged vertically at intervals in the third clamping station, so that the other oil passage of the left cover assembly faces directly upward.

[0020] To facilitate the clamping of the left box cover assembly in the vertical direction, the second and third clamping stations in this embodiment are each provided with two auxiliary positioning rods 20 at their lower parts. During clamping, the lower edge of the left box cover assembly is first supported on the auxiliary positioning rods 20, and then further coarse and precise positioning is performed before finally being pressed.

[0021] In order to reduce the total height after clamping and thus meet the travel requirements of the equipment, the base plate 1 has clearance grooves corresponding to the second and third clamping positions, so that the lower end of the vertically clamped left box cover assembly is located below the top surface of the base plate and does not exceed the bottom surface of the base plate, thereby solving the problem of the influence of the thickness of the fixture base plate on the total height of the product after clamping.

[0022] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A left cowl assembly machining fixture, characterized in that: The utility model relates to a left box cover assembly clamping device, including bottom plate (1), first vertical plate (2), second vertical plate (3), first vertical plate (2) and second vertical plate (3) are all erected on bottom plate (1), and one side of bottom plate (1) has first clamping station, one side of first vertical plate (2) has second clamping station, and one side of second vertical plate (3) has third clamping station, wherein first clamping station includes a plurality of first locating seat (4), the top surface of first locating seat (4) is plane, and the upper side of at least three first locating seat (4) is provided with first lever pressing cylinder (9), first locating seat (4) is all arranged on bottom plate (1) through locating cushion seat (5), and a group of diagonally arranged first cylindrical pin (6) and first diamond pin (7) of first clamping station, another group of diagonally arranged two first locating guide pin (8) of first clamping station, a plurality of second locating seat (10) of supporting left box cover assembly edge are provided on second clamping station, and the opposite direction of at least three second locating seat (10) is provided with second lever pressing cylinder (11), a group of diagonally arranged two second locating guide pin (12) of second clamping station, a group of diagonally arranged second cylindrical pin (13) and second diamond pin (14) of second clamping station make that one oil channel mouth of left box cover assembly faces directly upwards, a plurality of third locating seat (15) of supporting left box cover assembly edge are provided on third clamping station, and the opposite direction of at least three third locating seat (15) is provided with third lever pressing cylinder (16), a group of diagonally arranged two third locating guide pin (17) of third clamping station, vertically spaced apart third cylindrical pin (18) and third diamond pin (19) of third clamping station make that another oil channel mouth of left box cover assembly faces directly upwards.

2. A left cowl assembly machining fixture as claimed in claim 1, wherein: The lower part of the second clamping station and the third clamping station is provided with two auxiliary positioning rods (20).

3. A left cowl assembly machining fixture as claimed in claim 1, wherein: The first cylindrical pin (6) and the first diamond pin (7) are arranged on the bottom plate (1) through the locating cushion seat (5).

4. A left cowl assembly machining fixture as claimed in claim 1, wherein: The first locating guide pin (8) is arranged on the bottom plate (1) through the locating cushion seat (5).

5. A left cowl assembly machining fixture as claimed in claim 1, wherein: The bottom plate (1) has a clearance groove corresponding to the second clamping station and the third clamping station.

6. A left cowl assembly machining fixture as claimed in claim 1, wherein: The second lever pressing cylinder (11) is embedded in the first vertical plate (2).

7. A left cowl assembly machining fixture as claimed in claim 1, wherein: The third lever pressing cylinder (16) is embedded in the second vertical plate (3).

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