A bidirectional clamping and positioning tool for differential housing processing

Abstract

The present invention relates to the field of clamping and positioning technology, and specifically to a bidirectional clamping and positioning tool for processing a differential housing, comprising two mounting seats and two movable frames, wherein the top ends of opposite sides of the two movable frames are rotatably connected to a connecting mechanism, and a fixing mechanism for fixing the differential housing is provided on one side of the connecting mechanism. In the present invention, by mounting the housing to be processed on one of the chucks, after processing of one end of the interior of the housing is completed, the two movable frames are brought closer to each other so that the housing fixed on one of the chucks is fixed on the other chuck, eliminating the need for workers to manually disassemble the housing and then flip it over and fix it again to process the other end of the interior of the housing. Moreover, while processing the other end of the interior of the housing, the housing to be processed can continue to be fixed on one of the chucks, thereby improving the processing efficiency of the housing and reducing the workload of workers.

Description

Technical Field

[0001] The invention relates to the technical field of clamping and positioning, in particular to a bidirectional clamping and positioning tool for machining a differential housing. Background Art

[0002] The differential is an important component in the automobile transmission system. It is mainly used to allow the left and right wheels to rotate at different speeds when the car turns, thereby ensuring the smooth driving of the vehicle and normal wear of the tires. The differential housing is a key component in the automobile transmission system. Its structure, material and processing technology have a significant impact on the performance and safety of the vehicle. In order to improve processing accuracy, ensure processing quality, improve production efficiency and adapt to complex processing requirements, the differential housing is currently processed using a two-way clamping and positioning tooling.

[0003] The bidirectional clamping and positioning tooling positions and clamps both ends of the differential housing from two directions, so only the outside of the differential housing can be processed. When the inside of the housing needs to be processed, the housing needs to be fixed on another lathe through a three-jaw chuck. Moreover, when the differential housing is processed, both ends of its interior need to be processed. Therefore, after processing one end of the housing, the housing needs to be removed from the three-jaw chuck and then the processed end of the housing needs to be fixed on the three-jaw chuck, which is a more troublesome operation. Summary of the Invention

[0004] The object of the present invention is to provide a bidirectional clamping and positioning tool for machining a differential housing, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A bidirectional clamping and positioning tool for machining a differential housing, comprising two mounting seats and two movable frames, wherein the top ends of opposite sides of the two movable frames are rotatably connected to a connecting mechanism, and a fixing mechanism for fixing the differential housing is provided on one side of the connecting mechanism;

[0007] The connecting mechanism includes a turntable rotatably connected to the mobile frame at a corresponding position, a side surface of the turntable is provided with a plurality of elastic members arranged at equal angles in a ring shape, two symmetrical racks are fixedly connected to the top of the side surface of the turntable, and a pipe shaft is fixed through one side surface of the turntable and rotates with the mobile frame;

[0008] The fixing mechanism includes a chuck that slides through multiple elastic members at corresponding positions. On one side of the two chucks facing each other, three jaws are slidably connected in an annular and equiangular manner. Inside the chuck, a driving member for controlling the movement of the three jaws at corresponding positions is provided. Both ends of the main driving shaft of the driving member penetrate the chuck and are fixedly connected to gears that mesh with the racks at corresponding positions through one-way bearings.

[0009] Furthermore: A plurality of connecting blocks are fixedly connected to the outer wall of the chuck in an annular and equiangular manner. The elastic member includes a positioning rod fixedly connected to a turntable at a corresponding position and sliding through the connecting block at the corresponding position. A spring is provided between the turntable and the chuck at the corresponding position on the outside of the positioning rod.

[0010] Furthermore: The positioning rod has a T-shaped structure.

[0011] Furthermore: A fixed block is fixedly connected inside the chuck.

[0012] Furthermore: A chamber is formed inside the jaw. A slider is slidably connected inside the chamber. On both sides of the slider facing away from each other, connecting frames that slide through the corresponding jaws are fixedly connected. One end of the connecting frame is fixedly connected to a resisting block. A screw rod that penetrates and is screwed with the corresponding slider is rotatably connected between the two ends inside the chamber.

[0013] Furthermore: The moving frame consists of a moving plate and a fixed shell. The fixed shell is fixedly connected to the top of the moving plate. The turntable is rotatably connected inside the fixed shell. The tube shaft penetrates and rotates through the fixed shell. A U-shaped frame is fixedly connected to the side of the fixed shell. An electric push rod that penetrates the corresponding tube shaft is fixedly connected to the inner side of the U-shaped frame.

[0014] Furthermore: A bull's-eye roller is fixedly connected to the output end of the electric push rod. The outer diameter of the outer cylinder of the electric push rod is smaller than the inner diameter of the tube shaft.

[0015] Furthermore: A bidirectional screw rod that penetrates and is screwed with the two moving plates is rotatably connected between the two mounting seats. One end of the bidirectional screw rod penetrates the corresponding mounting seat. A motor is fixedly connected to the side of one of the mounting seats. The output end of the motor is fixedly connected to the bidirectional screw rod.

[0016] Furthermore: Two symmetric sliding rods that penetrate and slide through the two moving plates are fixedly connected between the two mounting seats.

[0017] Furthermore: Switch buttons are fixedly connected to one side of the two mounting seats facing each other.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By installing the shell to be processed on one of the chucks, after the processing of one end of the shell is completed, the two movable frames are brought close to each other, so that the shell fixed on one chuck is fixed on the other chuck, and the staff does not need to manually disassemble the shell and then turn it over and fix it again to process the other end of the shell. When processing the other end of the shell, the shell to be processed can continue to be fixed on one of the chucks, thereby improving the processing efficiency of the shell and reducing the workload of the staff;

[0020] 2. By moving the two chucks closer together and fixing the housing between the six jaws, the stability of the housing processing can be increased, preventing the thrust of the tool on the housing from causing the housing to tilt and deviate when the tool is processing the housing;

[0021] 3. The rotation of the screw can make the slider at that position drive the two connecting frames and the block to move until the block is in close contact with the outer side of the small diameter of the shell, thereby increasing the contact area with the shell and making the shell more firmly fixed;

[0022] 4. The turntable can drive the chuck at the corresponding position to rotate through multiple positioning rods. The elastic action of multiple springs can restore the squeezed and moved chuck to its original position. The fixing block can prevent the three claws from clamping the fixed ring outside the shell or the large diameter pipe of the shell.

[0023] 5. The chuck at the corresponding position can be supported by the electric push rod to prevent the movement of the lathe tool when processing the shell. The movement of the lathe tool drives the chuck, thereby avoiding large errors. The bull's eye roller can reduce the wear of the chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the mounting base in the present invention;

[0026] Figure 3 It is a schematic diagram of the mobile frame of the present invention;

[0027] Figure 4 Schematic diagram of the electric push rod in the present invention;

[0028] Figure 5 It is a schematic diagram of the connecting mechanism structure of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the fixing mechanism in the present invention;

[0030] Figure 7 It is a schematic diagram of the chuck in the present invention;

[0031] Figure 8 It is a schematic diagram of the clamping claw in the present invention.

[0032] In the figure: 1. Mounting seat; 11. Slide bar; 12. Switch button; 2. Moving frame; 21. Moving plate; 22. Fixed shell; 23. Profile frame; 24. Electric push rod; 25. Bull's eye roller; 26. Bidirectional screw rod; 27. Motor; 3. Connecting mechanism; 31. Turntable; 32. Positioning rod; 33. Spring; 34. Rack; 4. Fixing mechanism; 41. Chuck; 411. Connecting block; 412. Fixed block; 42. Claw; 421. Chamber; 422. Slider; 423. Connecting frame; 424. Stop block; 425. Screw; 43. Gear. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1 - Figure 8 In an embodiment of the present invention, a bidirectional clamping and positioning tool for machining a differential housing includes two mounting seats 1 and two movable frames 2. The two mounting seats 1 are fixed to a lathe by bolts. The two movable frames 2 slide between the two mounting seats 1. The top ends of opposite sides of the two movable frames 2 are rotatably connected to a connecting mechanism 3. A fixing mechanism 4 for fixing the differential housing is provided on one side of the connecting mechanism 3.

[0035] The connecting mechanism 3 includes a turntable 31 rotatably connected to the movable frame 2 at a corresponding position. A plurality of elastic members are provided at equal angles in a ring shape on one side of the turntable 31. Two symmetrical racks 34 are fixedly connected to the top of the side of the turntable 31. A pipe shaft is fixed through one side of the turntable 31 and rotates through the movable frame 2.

[0036] The fixing mechanism 4 includes a chuck 41 that slides through multiple elastic members at corresponding positions. The opposite sides of the two chucks 41 are each connected with three claws 42 in a circular equiangular sliding manner. A driving member for controlling the movement of the three claws 42 at corresponding positions is provided inside the chuck 41. Both ends of the main driving shaft of the driving member pass through the chuck 41 and are fixedly connected with a gear 43 that meshes with the rack 34 at the corresponding position through a one-way bearing.

[0037] Specifically, first, the tool is fixed to the lathe with bolts, and then one end of the differential housing to be processed is manually installed between the three claws 42 on one of the chucks 41 (the chuck 41, the driving part inside the chuck 41 and the claws 42 are all existing technologies, and the principle is the same as the three-jaw chuck in the existing technology, so how the claws 42 fix the differential housing will not be described in detail), and then an external driving device is connected to the pipe shaft to rotate the turntable 31 at the corresponding position and process the interior of the housing through the tool on the lathe. When the processing of one end of the interior of the housing is completed, the other end of the interior of the housing needs to be processed. This can be done by bringing the two movable frames 2 close to each other and inserting the other end of the housing (the end that is not fixed) into the other chuck. When the three claws 42 at 41 are between each other, the two moving frames 2 continue to be brought closer to each other. At this time, both ends of the differential housing are subjected to pressure, which can make the two chucks 41 move toward the moving frames 2 at the corresponding positions and compress the multiple elastic members. Since the movement of the chuck 41 will drive the two gears 43 at the corresponding positions to move, when the gear 43 is engaged with the rack 34 at the corresponding position, the movement of the chuck 41 can make the gear 43 at the corresponding position rotate. Since the gear 43 is fixed on the main driving shaft of the driving member, the rotation of the gear 43 can move the three claws 42 at the corresponding position through the driving member. At this time, the three claws 42 that originally fixed the differential housing loosen the housing under the rotation of the gear 43 at the corresponding position, and the other chuck The three claws 42 at 41 fix the end of the shell, and then the two moving frames 2 are moved away from each other. At this time, the chuck 41 is moved away from the moving frame 2 at the corresponding position under the action of multiple elastic members at the corresponding position. Since the gear 43 is fixed to the main drive shaft of the driving member through a one-way bearing, when the chuck 41 moves in the opposite direction, the gear 43 rotates but does not drive the main drive shaft of the driving member to rotate. Therefore, at this time, the shell is fixed between the three claws 42 at the other chuck 41, and then the tool head seat on the lathe drives the tool to rotate to process the other end of the shell. At this time, the shell to be processed can be continued to be fixed at one of the chucks 41 until the previous shell is completely processed and removed, and then the lathe tool head seat is moved. Restore the original position to process the newly installed and fixed shell. When it is necessary to process the outside of the differential shell, the two movable frames 2 can be brought close to each other and the shell can be fixed between the two chucks 41. Operations such as drilling can be performed on the outside of the large diameter pipe of the shell. Fixing the shell between the two chucks 41 can increase the stability of the shell during processing. The device first installs the shell to be processed on one of the chucks 41. After the processing of one end of the shell is completed, the two movable frames 2 are brought close to each other so that the shell fixed on one of the chucks 41 is fixed on the other chuck 41. There is no need for the staff to manually disassemble the shell and then flip it over and fix it again to process the other end of the shell. Moreover, when processing the other end of the shell,The shell to be processed can be further fixed at one of the chucks 41, thereby improving the processing efficiency of the shell and reducing the work intensity of the staff.

[0038] Example 1

[0039] like Figure 5 and Figure 7 As shown, in this embodiment, the outer wall of the chuck 41 is fixedly connected with a plurality of connecting blocks 411 at equal angles in an annular shape, and the elastic member includes a positioning rod 32 fixedly connected to the turntable 31 at the corresponding position and sliding through the connecting block 411 at the corresponding position, and a spring 33 is provided on the outside of the positioning rod 32 and between the turntable 31 at the corresponding position and the chuck 41, the positioning rod 32 is a T-shaped structure, and the inside of the chuck 41 is fixedly connected with a fixing block 412.

[0040] In this embodiment, when the two chucks 41 approach each other and the shell is subjected to pressure, the pressure exerted on the shell will act in the opposite direction on the two chucks 41, causing the chucks 41 to slide on the multiple positioning rods 32 at the corresponding positions and compress the multiple springs 33 at the corresponding positions. When the two movable frames 2 move away from each other, the chucks 41 move in the opposite direction under the elastic action of the multiple springs 33 at the corresponding positions, so that the chucks 41 return to their original positions. The chucks 41 can be limited by the positioning rods 32, so that the turntable 31 drives the chucks 41 to rotate, and the fixing blocks 412 can prevent the three claws 42 from clamping the fixing ring on the outside of the shell or the large diameter of the shell.

[0041] Example 2

[0042] like Figure 8 As shown, in this embodiment, a chamber 421 is opened inside the claw 42, and a slider 422 is slidably connected inside the chamber 421. The two opposite sides of the slider 422 are fixedly connected with a connecting frame 423 that slides through the claw 42 at the corresponding position, and one end of the connecting frame 423 is fixedly connected with a stop block 424. A screw 425 that is screwed through the slider 422 at the corresponding position is rotatably connected between the two ends of the interior of the chamber 421.

[0043] In this embodiment, after the three claws 42 fix the shell, the rotation of the screw 425 can cause the slider 422 at that position to drive the two connecting frames 423 and the stop block 424 to move until the stop block 424 is in close contact with the outer side of the small diameter of the shell, thereby increasing the contact area with the shell and making the shell fixed more firmly.

[0044] Example 3

[0045] like Figure 3-5As shown, in this embodiment, the moving frame 2 is composed of a moving plate 21 and a fixed housing 22. The fixed housing 22 is fixedly connected to the top of the moving plate 21. The turntable 31 is rotatably connected inside the fixed housing 22. The tube shaft penetrates and rotates through the fixed housing 22. A U-shaped frame 23 is fixedly connected to the side of the fixed housing 22. An electric push rod 24 penetrating the tube shaft at the corresponding position is fixedly connected to the inner side of the U-shaped frame 23. The output end of the electric push rod 24 is fixedly connected with a bull's-eye roller 25. The outer cylinder diameter of the electric push rod 24 is smaller than the inner diameter of the tube shaft.

[0046] In this embodiment, by driving the electric push rod 24, the chuck 41 at the corresponding position can be顶住 (it should be "pressed against" here), preventing the movement of the chuck 41 caused by the movement of the lathe tool when the lathe tool processes the housing during machining, thereby avoiding large errors. The bull's-eye roller 25 can reduce the wear of the chuck 41.

[0047] Embodiment Four

[0048] As Figure 2 and Figure 3 shown, in this embodiment, a bidirectional screw rod 26 that penetrates and is screwed with the two moving plates 21 is rotatably connected between the two mounting seats 1. One end of the bidirectional screw rod 26 penetrates the mounting seat 1 at the corresponding position. A motor 27 is fixedly connected to the side of one of the mounting seats 1. The output end of the motor 27 is fixedly connected to the bidirectional screw rod 26. Two symmetric slide bars 11 that penetrate and slide through the two moving plates 21 are fixedly connected between the two mounting seats 1. Switch buttons 12 are fixedly connected to the opposite side surfaces of the two mounting seats 1.

[0049] In this embodiment, first, the switch button 12 is electrically connected to the electric push rod 24 at the corresponding position and connected to an external power system. Moreover, the motor 27 is also connected to the external power system through a wire. By driving the motor 27, the bidirectional screw rod 26 can be rotated. The rotation of the bidirectional screw rod 26 can cause the two moving plates 21 to respectively drive the fixed housings 22 at the corresponding positions to approach or move away from each other. When the moving plate 21 presses the switch button 12 at the corresponding position, the output end of the electric push rod 24 at the corresponding position extends, causing the bull's-eye roller 25 to contact the chuck 41 at the corresponding position. At this time, the inside of the housing can be machined. When the housing needs to be installed on another chuck 41, when the two chucks 41 approach each other in the moving frame 2 at the corresponding position, the moving plate 21 starts to disengage from the switch button 12 at the corresponding position. At this time, the output end of the electric push rod 24 at the corresponding position retracts and disengages from the chuck 41 at the corresponding position, enabling the chuck 41 to move on the multiple positioning rods 32 at the corresponding position.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0051] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A bidirectional clamping and positioning tool for machining a differential housing, comprising two mounting seats (1) and two movable frames (2), characterized in that: The top ends of opposite sides of the two movable frames (2) are both rotatably connected to a connecting mechanism (3), and a fixing mechanism (4) for fixing the differential housing is provided on one side of the connecting mechanism (3); The connecting mechanism (3) includes a turntable (31) rotatably connected to the movable frame (2) at a corresponding position, a plurality of elastic members are provided in a circular shape at equal angles on one side surface of the turntable (31), two symmetrical racks (34) are fixedly connected to the top of the side surface of the turntable (31), and a pipe shaft that rotates through the movable frame (2) is fixed through one side surface of the turntable (31); The fixing mechanism (4) includes a chuck (41) that slides through a plurality of elastic members at corresponding positions, and three claws (42) are connected to the opposite side surfaces of the two chucks (41) in an annular manner and slidingly at equal angles. A driving member for controlling the movement of the three claws (42) at corresponding positions is provided inside the chuck (41), and both ends of the main driving shaft of the driving member penetrate the chuck (41) and are fixedly connected to a gear (43) that meshes with the rack (34) at the corresponding position through a one-way bearing.

2. The two-way clamping and positioning tool for machining a differential case according to claim 1, characterized in that: The outer wall of the chuck (41) is annularly fixedly connected with a plurality of connecting blocks (411) at equal angles. The elastic member includes a positioning rod (32) fixedly connected to the rotating disk (31) at a corresponding position and slidingly passing through the connecting block (411) at the corresponding position. A spring (33) is provided outside the positioning rod (32) and between the rotating disk (31) at the corresponding position and the chuck (41).

3. The two-way clamping and positioning tool for machining a differential case according to claim 2, characterized in that: The positioning rod (32) has a T-shaped structure.

4. The two-way clamping and positioning tool for machining a differential case according to claim 2, characterized in that: A fixing block (412) is fixedly connected to the interior of the chuck (41).

5. The bidirectional clamping and positioning tool for machining a differential case according to claim 2, characterized in that: A chamber (421) is provided inside the claw (42), a slider (422) is slidably connected inside the chamber (421), a connecting frame (423) is fixedly connected on both opposite sides of the slider (422) and is slidably passed through the claw (42) at the corresponding position, one end of the connecting frame (423) is fixedly connected to a stop block (424), and a screw (425) is rotatably connected between the two ends of the chamber (421) and is screwed through the slider (422) at the corresponding position.

6. The two-way clamping and positioning tool for machining a differential case according to claim 5, characterized in that: The movable frame (2) is composed of a movable plate (21) and a fixed shell (22). The fixed shell (22) is fixedly connected to the top of the movable plate (21). The turntable (31) is rotatably connected to the inside of the fixed shell (22). The pipe axis and the fixed shell (22) are rotated through each other. The side of the fixed shell (22) is fixedly connected to a shaped frame (23). The inner side of the shaped frame (23) is fixedly connected to an electric push rod (24) that penetrates the pipe axis at a corresponding position.

7. The two-way clamping and positioning tool for machining a differential case according to claim 6, characterized in that: The output end of the electric push rod (24) is fixedly connected to a bull's eye roller (25), and the outer cylinder diameter of the electric push rod (24) is smaller than the inner diameter of the tube shaft.

8. The two-way clamping and positioning tool for machining a differential case according to claim 6, characterized in that: A bidirectional screw rod (26) is rotatably connected between the two mounting seats (1) and is screwed through the two movable plates (21). One end of the bidirectional screw rod (26) passes through the mounting seats (1) at corresponding positions. A motor (27) is fixedly connected to the side of one of the mounting seats (1), and the output end of the motor (27) is fixedly connected to the bidirectional screw rod (26).

9. The two-way clamping and positioning tool for machining a differential case according to claim 8, characterized in that: Two symmetrical sliding rods (11) are fixedly connected between the two mounting seats (1) and slide through the two moving plates (21).

10. The two-way clamping and positioning tool for machining a differential case according to claim 8, characterized in that: The opposite side surfaces of the two mounting seats (1) are both fixedly connected with switch buttons (12).

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