Five-axis clamp for differential shell

Abstract

The utility model discloses a differential shell five-axis clamp which comprises a base capable of being installed on a five-axis machine tool, a back-pulling type clamping chuck is installed on the base, and a rotary oil distributor for supplying oil to an oil cylinder of the back-pulling type clamping chuck is embedded in the position, corresponding to the lower portion of the back-pulling type clamping chuck, of the base. The bottom of the rotary oil separator extends out of the lower side of the base, and a circle of clamping jaws used for fixing the differential mechanism shell are arranged on the top face of the rear pull type clamping chuck. A positioning block is arranged in the middle of an area defined by the clamping jaws, a through hole is formed in the middle of the positioning block and corresponds to the bottom of the differential mechanism shell, a positioning pin is arranged in the through hole and corresponds to the bottom of the differential mechanism shell, and the positioning pin is fixed to the top face of the rear pulling type clamping chuck. And an angular positioning mechanism corresponding to a positioning groove in the outer side of the differential mechanism shell is arranged on the rear pull type clamping chuck. The structure is compact, assembling is convenient, and labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a five-axis clamp for a differential housing. Background Art

[0002] Differential clamps are indispensable tools in industrial fields such as automobile manufacturing. They are responsible for ensuring the stability and accuracy of the differential during processing. Traditionally, differential clamps are often operated with manual chucks, but this technology has some problems and shortcomings in practical applications.

[0003] First, the clamping force of the manual chuck is not easy to control accurately. Since the clamping force is completely dependent on the operator's skills and experience, it is difficult to achieve consistent processing results. This leads to instability in product quality, increases scrap rate, and affects production efficiency.

[0004] Secondly, the operating accuracy of the manual chuck is limited by human factors. Worker fatigue, lack of concentration or insufficient skill level may lead to operating errors, which in turn affect the processing accuracy of the differential. This instability not only increases production costs, but may also have a negative impact on the performance and service life of the product.

[0005] In addition, the clamping process of the manual chuck is cumbersome and time-consuming. During the processing, multiple clamping operations are required, which not only increases the labor intensity of workers but also prolongs the processing cycle. For large-scale production, this inefficient processing method obviously cannot meet production needs.

[0006] In summary, although the manual chuck used in the differential fixture met the processing needs at the time to a certain extent, it had obvious problems and shortcomings in terms of clamping force control, operating accuracy and processing efficiency. With the continuous advancement of industrial technology, higher requirements are placed on the performance and efficiency of the differential fixture, so it is necessary to find a more advanced and efficient fixture technology to replace the traditional manual chuck. Utility Model Content

[0007] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes a five-axis clamp for a differential housing, which has a compact structure, is easy to assemble, and reduces the labor intensity of workers.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a five-axis clamp for a differential housing, comprising a base that can be installed on a five-axis machine tool, a rear-pull type clamping chuck is installed on the base, a rotating oil distributor for supplying oil to the oil cylinder of the rear-pull type clamping chuck is embedded on the base corresponding to the lower part of the rear-pull type clamping chuck, and the bottom of the rotating oil distributor extends out of the lower side of the base, and a circle of clamping claws for fixing the differential housing is arranged on the top surface of the rear-pull type clamping chuck; a positioning block is centrally arranged in the area surrounded by the clamping claws, a through hole is arranged in the middle of the positioning block corresponding to the bottom of the differential housing, a positioning pin is arranged in the through hole corresponding to the bottom of the differential housing, the positioning pin is fixed on the top surface of the rear-pull type clamping chuck, and an angular positioning mechanism is arranged on the rear-pull type clamping chuck corresponding to the positioning groove on the outer side of the differential housing;

[0009] The angular positioning mechanism includes a column fixed on the top of the rear-pull clamping chuck, the top of the column is provided with a U-shaped opening, a pressure block is rotatably connected to the U-shaped opening via a rotating shaft, and a clamping head extending outward from the column is provided on the side of the pressure block close to the differential housing. The clamping head of the pressure block can be clamped into the positioning groove on the outside of the differential housing by rotating the pressure block.

[0010] In the above scheme: the rear-pull clamping chuck includes a clamping shell, the oil cylinder is arranged near the bottom of the clamping shell, the top end of the piston rod of the oil cylinder is connected to a connecting plate for synchronously pulling the clamping jaws, and the connecting plate is provided with pull rods with the same number as the clamping jaws along its circumference, and the corresponding pull rods on the clamping shell are provided with sliding channels for sliding up and down, and the top ends of the pull rods extend outside the clamping shell for connecting with the clamping jaws, and the top ends of the pull rods are inclined outward and divergent.

[0011] In the above scheme: a first groove is horizontally opened on one side of the pull rod close to the connecting plate, the side of the connecting plate is inserted into the first groove, a protrusion is provided on the top of the connecting plate corresponding to each pull rod to prevent rotation, and a second groove is provided on the pull rod for the protrusion to be inserted into. The pull rod can be connected with the connecting plate through the first groove, which is convenient for installation. At the same time, the protrusion and the second groove can prevent the pull rod from moving left and right, ensuring the stability of the clamping point.

[0012] In the above scheme: a circle of abutments with the same number of jaws is protruding from the top of the positioning block, and the abutments are respectively located between two adjacent jaws, that is, they are staggered with each other, the arrangement is reasonable, and space is saved. At the same time, it can form an enclosing fixed structure for the differential housing, ensure the clamping stability, and facilitate the rotation and movement of the differential housing.

[0013] In the above scheme: the side of the stop block close to the through hole is concavely provided with a contoured notch matching the bottom of the differential housing, so as to improve the positioning stability and ensure the subsequent clamping stability.

[0014] In the above scheme: a clearance hole is opened on the column to facilitate the processing of the differential housing.

[0015] In summary, the beneficial effects of the utility model are: the bottom rotary distributor is used to accurately supply oil to the oil cylinder, and the direct drive rear-pull clamping chuck is realized, so as to firmly clamp the product. Its clamping force is strong and reliable, ensuring the stability and safety of the processing process. At the same time, the overall design is compact and small in size, which is not only convenient for installation and debugging, but also greatly saves space. The operation is simple and fast, enabling workers to quickly replace parts, and industrial robots can also be used instead of manual workpiece clamping to integrate into the automated production line for differential processing.

[0016] Compared with the traditional manual clamp, this clamp adopts a new clamp design, with extremely high positioning accuracy, stable and reliable clamping, and only one clamping is needed to complete the fine processing of all required processing parts. The pressure block of the angular positioning mechanism can be stuck in the positioning groove on the side of the differential housing, which can prevent the differential housing from rotating during the processing. When clamping, the worker only needs to move the pressure block to press it in the positioning groove, without other manual operations, which greatly reduces the labor intensity of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the utility model and a five-axis machine tool.

[0018] Figure 2 It is a stereoscopic diagram of the utility model, a five-axis machine tool and a differential housing.

[0019] Figure 3 It is a cross-sectional view of the utility model and the differential housing.

[0020] Figure 4 It is a three-dimensional diagram of the tie rod and the connecting plate. DETAILED DESCRIPTION

[0021] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0022] like Figure 1 to Figure 4 As shown, a five-axis fixture for a differential housing includes a base 1, and the base 1 is used for being installed on a five-axis machine tool.

[0023] A back-pull type clamping chuck 3 is mounted on the base 1, and a rotating oil distributor 5 is embedded on the base 1 corresponding to the back-pull type clamping chuck 3. The bottom of the rotating oil distributor 5 extends out of the base 1, and the rotating oil distributor 5 is used to supply oil to the oil cylinder 4 of the back-pull type clamping chuck 3.

[0024] The rear-pull clamping chuck 3 includes a clamping housing 2, and the oil cylinder is arranged near the bottom of the clamping housing 2. A connecting plate 12 for synchronously pulling the clamping jaws 6 is fixed to the top of the oil cylinder, and four pull rods 11 are arranged on the connecting plate 12 along its circumference. A sliding channel is arranged on the clamping housing 2 corresponding to the pull rod 11, and the sliding channel is used for the pull rod 11 to slide up and down.

[0025] Among them, a first groove 11a is horizontally opened on one side of the pull rod 11 close to the connecting plate 12, and the side of the connecting plate 12 is inserted into the first groove 11a. A protrusion 12a is provided on the top of the connecting plate 12 corresponding to each pull rod 11 to prevent rotation, and a second groove 11b is provided on the pull rod 11 for the protrusion 12a to be inserted. The first groove 11a can be used to clamp the connecting plate 12, which is convenient for installation. At the same time, the protrusion 12a and the second groove 11b can prevent the pull rod 11 from moving left and right, ensuring the stability of the clamping point.

[0026] The top end of the pull rod 11 extends out of the clamping housing 2 and is fixedly connected with the clamping claw 6. The top end of the pull rod 11 is inclined toward the outside of the rear-pull clamping chuck 3 in a divergent shape, and the clamping claw 6 is vertically arranged.

[0027] A positioning block 7 is centrally arranged in the area surrounded by the clamping jaws 6. A through hole is arranged in the middle of the positioning block 7 corresponding to the bottom of the differential housing 10, and a positioning pin 8 is arranged in the through hole corresponding to the bottom of the differential housing 10. The positioning pin 8 is fixed to the top of the rear-pull clamping chuck 3.

[0028] The top of the positioning block 7 is provided with a circle of abutment blocks 7a with the same number as the clamping jaws 6. In order to improve the positioning stability, the side of the abutment blocks 7a close to the through hole is provided with a contoured notch matching the bottom of the differential housing 10, so as to improve the positioning stability and ensure the subsequent clamping stability. The abutment blocks 7a are respectively located between two adjacent clamping jaws 6, that is, they are staggered and arranged reasonably, saving space, and can form a surrounding fixed structure for the differential housing 10, ensuring the clamping stability and facilitating the rotation and movement of the differential housing 10.

[0029] The angular positioning mechanism 9 is provided on the rear-pull type clamping chuck 3 corresponding to the positioning groove on the outside of the differential housing 10. The angular positioning mechanism 9 includes a column 9b fixed on the top of the rear-pull type clamping chuck 3, a U-shaped opening is provided at the top of the column 9b, a pressure block 9a is connected to the U-shaped opening by a horizontal rotating shaft, and a clamping head extending outward from the column is provided on the side of the pressure block 9a close to the differential housing. The clamping head of the pressure block 9a can be clamped into the positioning groove on the outside of the differential housing 10 by rotating the pressure block 9a, and the pressure block 9a is equipped with a clamping spring. A clearance hole 9c is provided on the column 9b to facilitate the processing of the differential housing 10.

Claims

1. A five-axis fixture for a differential housing, characterized in that: The invention comprises a base (1) which can be mounted on a five-axis machine tool, a back-pull type clamping chuck (3) being mounted on the base (1), a rotary oil distributor (5) for supplying oil to an oil cylinder (4) of the back-pull type clamping chuck (3) being embedded on the base (1) below the back-pull type clamping chuck (3), and the bottom of the rotary oil distributor (5) extending out of the lower side of the base (1), and a circle of clamping claws (10) for fixing a differential housing (10) being arranged on the top surface of the back-pull type clamping chuck (3) 6); a positioning block (7) is centrally arranged in the area surrounded by the clamping claws (6); a through hole is arranged in the middle of the positioning block (7) corresponding to the bottom of the differential housing (10); a positioning pin (8) is arranged in the through hole corresponding to the bottom of the differential housing (10); the positioning pin (8) is fixed to the top surface of the rear-pull type clamping chuck (3); an angular positioning mechanism (9) is arranged on the rear-pull type clamping chuck (3) corresponding to the positioning groove on the outer side of the differential housing (10); The angular positioning mechanism (9) comprises a column (9b) fixed on the top of the rear-pull clamping chuck (3), the top of the column (9b) is provided with a U-shaped opening, a pressure block (9a) is rotatably connected to the U-shaped opening via a horizontal rotating shaft, and a clamping head extending outward from the column is provided on a side of the pressure block (9a) close to the differential housing, and the clamping head can be clamped into a positioning groove on the outside of the differential housing (10) by rotating the pressure block (9a).

2. The five-axis fixture for a differential case according to claim 1, characterized in that: The rear-pull clamping chuck (3) includes a clamping shell (2), the oil cylinder is arranged near the bottom of the clamping shell (2), the top end of the piston rod of the oil cylinder is connected to a connecting plate (12) for synchronously pulling the clamping jaws (6), and the connecting plate (12) is provided with pull rods (11) along its circumference, the number of which is the same as the number of the clamping jaws (6), and the corresponding pull rods (11) on the clamping shell (2) are provided with sliding channels for the pull rods (11) to slide up and down, and the top ends of the pull rods (11) extend outside the clamping shell (2) for connecting with the clamping jaws (6), and the top ends of the pull rods (11) are inclined outwards and divergent.

3. The five-axis fixture for differential case according to claim 2, characterized in that: A first groove (11a) is horizontally provided on one side of the pull rod (11) close to the connecting plate (12), and the side edge of the connecting plate (12) is inserted into the first groove (11a). A protrusion (12a) for preventing rotation is provided at the top of the connecting plate (12) corresponding to each pull rod (11), and a second groove (11b) for the protrusion (12a) to be inserted is provided on the pull rod (11).

4. The five-axis fixture for a differential case according to claim 1, characterized in that: A circle of stop blocks (7a) whose number is the same as the number of the clamping jaws (6) is protruded from the top of the positioning block (7), and the stop blocks (7a) are respectively located between two adjacent clamping jaws (6).

5. The five-axis fixture for a differential case according to claim 4, characterized in that: The side of the stop block (7a) close to the through hole is concavely provided with a contoured notch matching the bottom of the differential housing (10).

6. The five-axis fixture for a differential case according to claim 1, characterized in that: The upright post (9b) is provided with a clearance hole (9c).

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