Limited slip differential machining device

Abstract

The invention relates to the technical field of grinding and polishing equipment, and particularly discloses a limited slip differential machining device which comprises a machine body, a working bin is arranged on the machine body, the working bin is filled with a polishing medium, a clamping mechanism is further arranged on the machine body, and the clamping mechanism comprises a lifting part, a clamping part and a driving part. The lifting part is matched with the machine body in a lifting mode and connected with a driving source, the clamping part is used for being detachably connected with a workpiece, the lifting part and the clamping part are arranged in an off-axis mode, the lifting part is connected with the clamping part through a transmission assembly, and the driving source drives the lifting part and the clamping part to rotate in the axial direction of the lifting part and the clamping part. According to the machining device, the consistency of the polishing strength of the surface of the workpiece is guaranteed, and the polishing treatment quality and the working efficiency of the workpiece are improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding and polishing equipment, and in particular to a limited slip differential processing device. Background Art

[0002] In order to improve the performance of the limited slip differential, extend its service life and repair wear, the limited slip differential needs to be polished after the basic shape of the limited slip differential is roughly processed. In the related art, the differential is ground and polished by tools such as grinding wheels or grinding heads. However, due to the relatively irregular shape of the differential, the grinding and polishing method has the problem of low work efficiency. In the production process of the limited slip differential, in order to ensure that it has excellent mechanical properties, it is also necessary to polish the inside. When using a grinding wheel or a grinding head to grind and polish the differential, it is difficult for the grinding tool to reach into the inside of the differential.

[0003] The patent document with authorization announcement number CN113787447B discloses a double-sided polishing device for a differential housing, including a base, a conical polishing chamber that can rotate freely on the base is arranged in the center of the base, a drive box is arranged at the upper end of the base, and a first drive mechanism that can drive the polishing chamber to rotate is arranged in the drive box; a polishing cover plate is arranged directly above the polishing chamber, and a second drive mechanism is also arranged in the drive box, and a clamp 1 that can fix the inner wall of the differential and a clamp 2 that can fix the outer wall of the differential are arranged at the lower end of the polishing cover plate, and a stirring mechanism that can assist in polishing is also arranged between the clamp 1 and the clamp 2, and an atomizing nozzle is also arranged at the bottom of the closing plate, and a material receiving bin is arranged directly below the polishing chamber. The polishing device provided by the patent document increases the fluidity of polishing sand and the contact frequency of polishing sand with the differential housing through a rotatable polishing chamber and an internal stirring mechanism, thereby improving the polishing efficiency of the differential housing.

[0004] During the process of polishing the differential case with polishing sand, as the use time increases, part of the polishing sand will be worn and gradually broken into smaller particles. The cutting ability of the worn and damaged polishing sand will deteriorate and affect the polishing efficiency. Under the action of centrifugal force, the polishing sand with smaller particles will gradually move upward, while the polishing sand with relatively complete particles and larger particles will gradually move downward, resulting in a difference in the polishing intensity between the upper and lower positions of the differential case during the polishing operation. The polishing device provided in the above patent document fixes the differential case by clamps one and two, and then drives the differential case to rotate around its axis in the polishing chamber to contact the polishing sand. The diameter of the differential case gradually increases from bottom to top, and there is a difference in the grinding effect generated when the upper and lower ends of the differential case contact the polishing sand. The polishing sand has a stronger grinding effect on the lower end of the differential case, which further increases the difference in polishing intensity between the upper and lower positions of the differential case and affects the overall polishing effect of the differential case. Summary of the invention

[0005] The present invention provides a limited slip differential processing device, aiming to solve the problem that when a polishing device in the related art polishes a differential housing, the differential housing is unevenly polished due to the influence of the shape of the differential housing itself and the change in particle size of the polishing sand after wear.

[0006] The present invention includes a machine body, a working chamber is provided on the machine body, the working chamber is filled with polishing medium, a clamping mechanism is also provided on the machine body, the clamping mechanism includes a lifting member, a clamping member and a driving member, the lifting member is coordinated with the machine body for lifting and lowering and is connected to a driving source, the clamping member is used for detachable connection with a workpiece, the lifting member and the clamping member are arranged off-axis, the lifting member is connected to the clamping member through a transmission assembly, the driving source drives the lifting member and the clamping member to rotate around their own axis, and the driving member drives the clamping member to rotate around the axis of the lifting member.

[0007] The beneficial effects are: improving the consistency of the polishing intensity of the workpiece surface, the clamping parts movably clamp the workpiece, the lifting parts are connected to the clamping parts through the transmission assembly, so that the clamping parts rotate with the rotation of the lifting parts, and the setting of the driving part further promotes the rotation of the workpiece while rotating around the axial direction of the driving part, so that the workpiece is fully in contact with the polishing media at different heights in the working chamber. The movement of the workpiece and the clamping parts can also promote the longitudinal movement of the polishing media, avoid the longitudinal stratification and aggregation of polishing media of different particle sizes, improve the consistency of the polishing intensity on the workpiece, and ensure the polishing efficiency and polishing effect of the workpiece.

[0008] Preferably, the transmission assembly is a universal joint, a shell coaxial with the lifting member is provided on the outer side of the transmission assembly, and the clamping member is rotatably matched with the shell.

[0009] Preferably, the driving member is longitudinally slidably matched with the shell, the driving member is coaxial with the lifting member, the shell does not rotate relative to the driving member, and the driving source simultaneously drives the lifting member and the driving member to rotate around their axial direction.

[0010] Preferably, the driving end of the driving source is connected to transmission belt 1 and transmission belt 2, the lifting member is also lifted and connected to a connecting member, the connecting member and the lifting member do not rotate relative to each other, one set of transmission belts is arranged on the outside of the connecting member, and the second set of transmission belts is arranged on the outside of the driving member.

[0011] The beneficial effects are as follows: the driving source drives the connecting part to rotate through the transmission belt 1, the lifting part rotates synchronously with the connecting part, and the clamping part rotates around the connecting shaft under the transmission action of the transmission assembly, that is, the workpiece rotates around the connecting shaft with the clamping part, and the driving source drives the driving part to rotate through the transmission belt 2, the shell rotates synchronously with the driving part, and the connecting shaft rotates with the shell, so that the clamping part and the workpiece rotate around their own axis while also rotating around the axis of the driving part, thereby fully improving the flexibility of the workpiece driving action, and thereby promoting full contact between the workpiece and the polishing medium at different positions.

[0012] Preferably, an adjustment component is also provided on the working bin, and the adjustment component includes a mobile bin and an adjustment member, the mobile bin is in a "U" shape, with the axial side facing the working bin as the inner side and the opening end of the mobile bin facing the outer side, and the adjustment member pushes the mobile bin to slide radially along the working bin.

[0013] Preferably, the adjusting member is rod-shaped, the adjusting member is rotationally matched with the outer wall of the working bin, the movable bin is slidingly matched with the side wall of the working bin, the movable bin is fixed with a connecting part on the outside of the working bin, and the adjusting member is threadedly matched with the connecting part.

[0014] The beneficial effects are: it is easy to adapt to the difference in volume of workpieces of different models. By rotating the adjusting piece, the mobile bin can slide along the radial direction of the working bin and change the space in the working bin, so as to save the amount of polishing medium used when the workpiece volume is small.

[0015] Preferably, there are multiple groups of the adjustment components, and each group of the adjustment components is evenly spaced apart along the circumference of the working chamber.

[0016] The beneficial effect is that by setting multiple groups of adjustment components, the adjustment range of the actual capacity in the working chamber can be effectively increased to better adapt to the volume differences of workpieces of different models.

[0017] Preferably, the bottom of the movable bin is fitted with the bottom end surface of the working bin, the thickness of the inner end surface of the working bin increases from top to bottom, and a pointed end is formed at its innermost side.

[0018] The beneficial effects are: reducing the resistance when the mobile bin moves toward the inside of the working bin, and facilitating smooth adjustment of the relative positions of the mobile bin and the working bin.

[0019] Preferably, the clamping member includes a connecting shaft, a base and at least two claws, the connecting shaft is connected to the transmission assembly, the base is fixed to the connecting shaft, the claws are evenly spaced along the circumference of the base, and each claw is movably abutted against the bottom of the workpiece.

[0020] The beneficial effects of the present invention are: (1) Improve the consistency of the polishing intensity of the workpiece surface. The clamping parts movably clamp the workpiece. The lifting parts are connected to the clamping parts through the transmission assembly, so that the clamping parts rotate with the rotation of the lifting parts. The setting of the driving parts further promotes the rotation of the workpiece while rotating around the axial direction of the driving parts, so that the workpiece is fully in contact with the polishing medium at different positions in the working chamber. The movement of the workpiece and the clamping parts can also promote the longitudinal movement of the polishing medium, avoid the longitudinal stratification and aggregation of polishing media of different particle sizes, improve the consistency of the polishing intensity on the workpiece, and ensure the polishing efficiency and polishing effect of the workpiece.

[0021] (2) It is easy to adapt to the difference in the volume of workpieces of different models. By rotating the adjusting piece, the mobile chamber can slide along the radial direction of the working chamber and change the space in the working chamber, so as to save the amount of polishing medium used when the workpiece volume is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure inside the working chamber of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the connection between the clamping mechanism and the workpiece in the present invention.

[0025] Figure 4 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0026] Reference numerals: 1. Machine body; 11. Working chamber; 2. Lifting parts; 21. Transmission assembly; 22. Connecting parts; 23. Driving parts; 24. Driving source; 241. Transmission belt 1; 242. Transmission belt 2; 25. Shell; 26. Cylinder; 3. Clamping parts; 31. Connecting shaft; 32. Base; 33. Clamping claws; 4. Moving chamber; 41. Adjusting parts; 5. Workpiece. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] like Figure 1 and Figure 2As shown, the limited slip differential processing device of the present invention comprises a machine body 1, a working chamber 11 is provided on the machine body 1, and the working chamber 11 is filled with a polishing medium, which can be polishing sand. A clamping mechanism is also provided on the machine body 1, and a workpiece 5 to be polished is detachably connected to the clamping mechanism. The clamping mechanism comprises a lifting member 2, a clamping member 3 and a driving member 23. The lifting member 2 is lifted and matched with the machine body 1. A cylinder 26 is installed on the machine body 1. The protruding end of the cylinder 26 is rotatably connected to the lifting member 2 and drives the lifting member 2 to move longitudinally. The clamping member 3 is detachably connected to the workpiece 5. Specifically, the clamping member 3 comprises a connecting shaft 31, a base 32 and at least two The base 32 is fixed to the connecting shaft 31, and the claws 33 are evenly spaced along the circumference of the base 32. Each claw 33 is movably abutted against the bottom of the workpiece 5. The number of claws 33 is preferably three. When clamping and fixing the workpiece 5, the workpiece 5 is first placed on the base 32, and then the workpiece 5 is clamped and fixed by each claw 33. The connecting shaft 31 between the lifting member 2 and the clamping member 3 is set off-axis, and the lifting member 2 is connected to the connecting shaft 31 through the transmission assembly 21. The driving source 24 drives the lifting member 2 and the clamping member 3 to rotate around their own axes, and the driving member 23 drives the clamping member 3 to rotate around the axial direction of the lifting member 2.

[0029] like Figure 3 and Figure 4 As shown, the transmission assembly 21 is a universal joint, which simultaneously connects the lifting member 2 and the connecting shaft 31, and transmits the rotation of the lifting member 2 to the connecting shaft 31, so that the lifting member 2 and the connecting shaft 31 can rotate around their own axes. The structure and transmission method of the universal joint belong to the prior art, and the universal joint is not described in detail here. A shell 25 coaxial with the lifting member 2 is provided on the outer side of the transmission assembly 21, and the connecting shaft 31 rotates with the shell 25, and the driving member 23 is longitudinally slidably matched with the shell 25. The driving member 23 is coaxial with the lifting member 2, and the shell 2 5 does not rotate relative to the driving member 23, the driving source 24 drives the lifting member 2 and the driving member 23 to rotate around the axial direction thereof at the same time, the driving source 24 can be a motor, the driving source 24 is installed on the machine body 1, the driving end of the driving source 24 is connected with a transmission belt 1 241 and a transmission belt 2 242, the lifting member 2 is also lifted and connected with the connecting member 22, the connecting member 22 and the lifting member 2 are connected by a key, the connecting member 22 and the lifting member 2 do not rotate relative to each other, the transmission belt 1 241 is sleeved on the outside of the connecting member 22, and the transmission belt 2 242 is sleeved on the outside of the driving member 23.

[0030] When the workpiece 5 is polished, the cylinder 26 first drives the lifting member 2 to move upward, and the clamping member 3 moves upward with the lifting member 2 until the clamping member 3 moves to the upper side of the polishing medium, and the workpiece 5 to be operated is clamped and fixed by the clamping member 3. Then, the cylinder 26 drives the lifting member 2 to move downward, and drives the clamping member 3 and the workpiece 5 to move downward. The axial direction of the clamping member 3 is offset relative to the lifting member 2 and the working chamber 11. When the clamping member 3 moves downward, it drives the workpiece 5 to gradually sink into the polishing medium in the working chamber 11 in a relatively inclined state, thereby reducing the resistance encountered by the workpiece 5 when it sinks into the polishing medium, and facilitating the workpiece 5 to smoothly enter the polishing medium. After the workpiece 5 is placed in place, the cylinder 26 stops working and the driving source 24 starts working. The driving source 24 drives the connecting member 22 to rotate through the transmission belt 1 241, and the lifting member 2 rotates synchronously with the connecting member 22. The clamping member 3 rotates around the connecting shaft 31 under the transmission action of the transmission assembly 21, that is, the workpiece 5 rotates around the connecting shaft 31 with the clamping member 3. At the same time, the driving source 24 drives the driving member 23 to rotate through the transmission belt 242, and the shell 25 rotates synchronously with the driving member 23. The connecting shaft 31 rotates with the shell 25, so that the clamping member 3 and the workpiece 5 rotate around their own axes and also around the axis of the driving member 23. When the workpiece 5 rotates in the working chamber 11, it will fully contact with the polishing media at different heights in the working chamber 11, thereby improving the balance of the polishing intensity of different positions of the workpiece 5. The movement mode of the workpiece 5 and the clamping member 3 can also promote the longitudinal movement of the polishing medium, avoid the stratified aggregation of polishing media of different particle sizes in the longitudinal direction, improve the consistency of the polishing intensity on the workpiece 5, and ensure the polishing efficiency and polishing effect of the workpiece 5.

[0031] Because there are certain differences in the sizes of workpieces 5 of different models, in order to ensure the polishing effect of the workpiece 5, the workpiece 5 needs to be completely immersed in the polishing medium. The capacity of the working chamber 11 is fixed, which leads to the need for more polishing medium when polishing a small workpiece 5. In order to adapt to the difference in the volume of workpieces 5 of different models, when the workpiece 5 is small, the amount of polishing medium used is saved, such as Figure 1 and Figure 2As shown, an adjusting component is also provided on the working bin 11, and there are multiple groups of adjusting components, and each group of adjusting components is evenly spaced along the circumference of the working bin 11. In the present embodiment, four groups of adjusting components are preferably provided, and the adjusting component includes a movable bin 4 and an adjusting member 41. The movable bin 4 is in a "U" shape, and the bottom of the movable bin 4 is in contact with the bottom end face of the working bin 11. The thickness of the inner end face of the working bin 11 increases from top to bottom, and a pointed end is formed at its innermost side, with the side facing the axial direction of the working bin 11 as the inner side, and the open end of the movable bin 4 faces the outside. The adjusting member 41 pushes the movable bin 4 to slide radially along the working bin 11. The adjusting member 41 is in a rod shape, and the adjusting member 41 is rotatably matched with the outer wall of the working bin 11, and the movable bin 4 is slidably matched with the side wall of the working bin 11. The movable bin 4 is fixed with a connecting portion on the outside of the working bin 11, and the adjusting member 41 is threadedly matched with the connecting portion. By rotating the adjusting member 41, the movable bin 4 can slide radially along the working bin 11 and change the space in the working bin 11 to adapt to the polishing work of workpieces 5 of different models.

[0032] The limited slip differential processing device provided by the present invention drives the workpiece to simultaneously rotate and revolve in the working chamber through a clamping mechanism, thereby promoting full contact between the workpiece and polishing media at different heights in the working chamber, and promoting the longitudinal movement of the polishing media, thereby avoiding the accumulation of polishing media of different particle sizes at different heights in the working chamber, ensuring the consistency of polishing intensity at different positions on the workpiece, and thereby improving the polishing effect and efficiency of the workpiece.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A limited slip differential machining device, comprising a machine body (1), wherein a working chamber (11) is provided on the machine body (1), wherein the working chamber (11) is filled with a polishing medium, wherein: The machine body (1) is also provided with a clamping mechanism, the clamping mechanism comprising a lifting member (2), a clamping member (3) and a driving member (23); the lifting member (2) cooperates with the machine body (1) in lifting and lowering and is connected to a driving source (24); the clamping member (3) is used to be detachably connected to a workpiece (5); the lifting member (2) and the clamping member (3) are arranged off-axis; the lifting member (2) is connected to the clamping member (3) via a transmission assembly (21); the driving source (24) drives the lifting member (2) and the clamping member (3) to rotate around their own axes; and the driving member (23) drives the clamping member (3) to rotate around the axis of the lifting member (2).

2. The limited slip differential machining device according to claim 1, characterized in that: The transmission assembly (21) is a universal joint. A housing (25) coaxial with the lifting member (2) is provided on the outside of the transmission assembly (21). The clamping member (3) is rotatably matched with the housing (25).

3. The limited slip differential machining device according to claim 2, characterized in that: The driving member (23) and the housing (25) are longitudinally slidably matched, the driving member (23) and the lifting member (2) are coaxial, the housing (25) does not rotate relative to the driving member (23), and the driving source (24) simultaneously drives the lifting member (2) and the driving member (23) to rotate around their axes.

4. The limited slip differential machining device according to claim 3, characterized in that: The driving end of the driving source (24) is connected to a transmission belt 1 (241) and a transmission belt 2 (242); the lifting member (2) is also connected to a connecting member (22) in a lifting manner; the connecting member (22) and the lifting member (2) do not rotate relative to each other; the transmission belt 1 (241) is sleeved on the outside of the connecting member (22); and the transmission belt 2 (242) is sleeved on the outside of the driving member (23).

5. The limited slip differential machining device according to claim 1, characterized in that: The working bin (11) is also provided with an adjustment component, the adjustment component comprising a movable bin (4) and an adjustment member (41); the movable bin (4) is in a "U" shape, with the side facing the axial direction of the working bin (11) as the inner side, and the open end of the movable bin (4) facing the outer side; the adjustment member (41) pushes the movable bin (4) to slide radially along the working bin (11).

6. The limited slip differential machining device according to claim 5, characterized in that: The adjusting member (41) is in the shape of a rod. The adjusting member (41) is rotationally engaged with the outer wall of the working bin (11). The movable bin (4) is slidingly engaged with the side wall of the working bin (11). The movable bin (4) is fixed with a connecting portion on the outer side of the working bin (11), and the adjusting member (41) is threadedly engaged with the connecting portion.

7. The limited slip differential machining device according to claim 5, characterized in that: There are multiple groups of adjustment components, and each group of adjustment components is evenly spaced and distributed along the circumference of the working chamber (11).

8. The limited slip differential machining device according to claim 5, characterized in that: The bottom of the movable bin (4) fits with the bottom end surface of the working bin (11), and the thickness of the inner end surface of the working bin (11) increases from top to bottom, and forms a pointed tip at its innermost side.

9. The limited slip differential machining device according to claim 1, characterized in that: The clamping member (3) comprises a connecting shaft (31), a base (32) and at least two claws (33); the connecting shaft (31) is connected to the transmission assembly (21); the base (32) is fixed to the connecting shaft (31); the claws (33) are evenly spaced along the circumference of the base (32); and the claws (33) are movably abutted against the bottom of the workpiece (5).

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