A limited-slip differential processing device

Abstract

The present invention relates to the technical field of grinding and polishing equipment, and specifically discloses a processing device for a limited-slip differential, which includes a machine body. A working chamber is provided on the machine body, and 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 in lifting cooperation with the machine body and is connected to a driving source. The clamping member is used for detachably connecting with a workpiece. The lifting member and the clamping member are arranged with offset axes. 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 axial directions, and the driving member drives the clamping member to rotate around the axial direction of the lifting member. The processing device of the present invention ensures the consistency of the polishing strength on the surface of the workpiece, and improves the polishing quality and working efficiency of the workpiece.

Description

Technical Field

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

[0002] In order to improve the performance, extend the service life and repair the wear of a limited-slip differential, after the rough machining of the basic shape of the limited-slip differential is completed, it is also necessary to polish it. In related technologies, a grinding wheel or a grinding head-like tool is mostly used to grind and polish the differential. However, due to the relatively irregular shape of the differential, the method of grinding and polishing has the problem of low working efficiency. In the production process of the limited-slip differential, in order to ensure its excellent mechanical properties, it is also necessary to polish its interior. When using a grinding wheel or a grinding head to grind and polish the differential, it is also difficult for the grinding tool to reach into the interior of the differential.

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

[0004] During the process of the polishing sand grinding the differential housing, as the use time increases, a 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 become poor and affect the polishing efficiency. Under the action of centrifugal force, the polishing sand with a smaller particle size will gradually move upward, while the polishing sand with relatively intact particles and a larger particle size will gradually move downward, resulting in a difference in the polishing intensity at the upper and lower positions of the differential housing during the polishing operation. The polishing device provided in the above patent document fixes the differential housing through the fixture one and the fixture two, and then drives the differential housing to rotate around its axis in the polishing chamber to contact the polishing sand. The diameter of the differential housing gradually increases from bottom to top. There is a difference in the grinding effect when the upper and lower ends of the differential housing contact the polishing sand. The grinding effect of the polishing sand on the lower end of the differential housing is stronger, further increasing the difference in the polishing intensity at the upper and lower positions of the differential housing and affecting the overall polishing effect of the differential housing. Summary of the Invention

[0005] The present invention provides a limited-slip differential processing device, aiming to solve the problem that when the polishing equipment in the related art polishes the differential housing, affected by the shape of the differential housing itself and the change in particle size after the polishing sand wears, the polishing of the differential housing is uneven.

[0006] The present invention includes a machine body. A working chamber is provided on the machine body. The working chamber is filled with a 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 in lifting cooperation with the machine body and is connected to a driving source. The clamping member is used for detachably connecting with a workpiece. The lifting member and the clamping member are arranged eccentrically. 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 axial directions. The driving member drives the clamping member to rotate around the axial direction of the lifting member.

[0007] The beneficial effects are as follows: improving the consistency of the polishing strength on the surface of the workpiece. The clamping member clamps the workpiece movably. The lifting member is connected to the clamping member through a transmission assembly, so that the clamping member rotates self-rotationally along with the rotation of the lifting member. The setting of the driving member further promotes the self-rotation of the workpiece and rotates around the axial direction of the driving member, so that the workpiece can fully contact with the polishing media at different heights in the working chamber. The movement modes of the workpiece and the clamping member can also promote the longitudinal movement of the polishing media, avoiding the longitudinal stratification and aggregation of polishing media with different particle sizes, improving the consistency of the polishing strength on the workpiece, and ensuring the polishing efficiency and polishing effect of the workpiece.

[0008] Preferably, the transmission assembly is a universal joint. A housing coaxial with the lifting member is provided outside the transmission assembly. The clamping member is in rotational cooperation with the housing.

[0009] Preferably, the driving member is in longitudinal sliding cooperation with the housing. The driving member is coaxial with the lifting member. The housing does not rotate relative to the driving member. The driving source simultaneously drives the lifting member and the driving member to rotate around their axial directions.

[0010] Preferably, the driving end of the driving source is connected with a first transmission belt and a second transmission belt. The lifting member is also connected with a connecting member in a lifting manner. The connecting member does not rotate relative to the lifting member. The first transmission belt is sleeved outside the connecting member. The second transmission belt is sleeved outside the driving member.

[0011] The beneficial effects are as follows: The driving source drives the connecting member to rotate through the first transmission belt, the lifting member rotates synchronously with the connecting member, and the clamping member rotates around the connecting shaft under the driving action of the transmission assembly, that is, the workpiece rotates around the connecting shaft with the clamping member. The driving source drives the driving member to rotate through the second transmission belt, the housing rotates synchronously with the driving member, and the connecting shaft rotates with the housing, so that while the clamping member and the workpiece rotate around their own axial directions, they also rotate around the axial direction of the driving member, fully improving the flexibility of the workpiece driving action, and further promoting the full contact between the workpiece and the polishing medium at different positions.

[0012] Preferably, an adjusting assembly is further provided on the working chamber. The adjusting assembly includes a moving chamber and an adjusting member. The moving chamber is in a "U" shape, with the side facing the axial direction of the working chamber as the inner side, and the open end of the moving chamber facing the outside. The adjusting member pushes the moving chamber to slide along the radial direction of the working chamber.

[0013] Preferably, the adjusting member is in a rod shape, the adjusting member is rotatably matched with the outer wall of the working chamber, the moving chamber is slidably matched with the side wall of the working chamber, a connecting portion is fixed on the outside of the working chamber of the moving chamber, and the adjusting member is in threaded cooperation with the connecting portion.

[0014] The beneficial effects are as follows: It is convenient to adapt to the differences in the volumes of workpieces of different models. By rotating the adjusting member, the moving chamber can slide along the radial direction of the working chamber and change the space inside the working chamber, so as to save the amount of polishing medium used when the volume of the workpiece is small.

[0015] Preferably, there are multiple groups of the adjusting assemblies, and the groups of adjusting assemblies are evenly spaced along the circumferential direction of the working chamber.

[0016] The beneficial effects are as follows: By providing multiple groups of adjusting assemblies, the adjustment range of the actual capacity inside 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 moving chamber is attached to the bottom end face of the working chamber, and the thickness of the inner end face of the working chamber increases from top to bottom and forms a tip at its innermost side.

[0018] The beneficial effects are as follows: Reduce the resistance when the moving chamber moves towards the inner side of the working chamber, and facilitate the smooth adjustment of the relative positions of the moving chamber and the working chamber.

[0019] Preferably, the clamping member includes a connecting shaft, a base, and at least two clamping claws. The connecting shaft is connected to the transmission assembly, the base is fixed to the connecting shaft, and the clamping claws are evenly spaced along the circumferential direction of the base, and each clamping claw is in movable contact with the bottom of the workpiece.

[0020] The beneficial effects of the present invention are as follows:

[0021] (1) Improve the consistency of the polishing intensity on the workpiece surface. The clamping part actively clamps the workpiece, and the lifting part is connected to the clamping part through the transmission component, so that the clamping part rotates self - rotatably with the rotation of the lifting part. The setting of the driving part further promotes the self - rotation of the workpiece and its rotation around the axis of the driving part, so that the workpiece can fully contact the polishing media at different positions in the working chamber. The movement modes of the workpiece and the clamping part can also promote the longitudinal movement of the polishing media, avoid the longitudinal stratification and aggregation of polishing media with different particle sizes, improve the consistency of the polishing intensity on the workpiece, and ensure the polishing efficiency and effect of the workpiece.

[0022] (2) Facilitate adapting to the volume differences of workpieces of different models. By rotating the adjusting part, the moving chamber can slide radially along the working chamber and change the space in the working chamber, so as to save the amount of polishing media used when the volume of the workpiece is small. Description of the Drawings

[0023] Figure 1 is the schematic diagram of the overall structure of the present invention.

[0024] Figure 2 is the schematic diagram of the internal structure of the working chamber in the present invention.

[0025] Figure 3 is the schematic diagram of the connection structure between the clamping mechanism and the workpiece in the present invention.

[0026] Figure 4 is the schematic diagram of the clamping mechanism in the present invention.

[0027] Reference Signs:

[0028] 1, body; 11, working chamber; 2, lifting part; 21, transmission component; 22, connecting piece; 23, driving part; 24, driving source; 241, first transmission belt; 242, second transmission belt; 25, housing; 26, cylinder; 3, clamping part; 31, connecting shaft; 32, base; 33, claw; 4, moving chamber; 41, adjusting part; 5, workpiece. Detailed Embodiments

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] Such as Figure 1 and Figure 2As shown in the figure, the processing device for the limited-slip differential of the present invention includes a machine body 1. A working chamber 11 is provided on the machine body 1, and a polishing medium is filled in the working chamber 11. The polishing medium can be polishing sand. A clamping mechanism is also provided on the machine body 1. The workpiece 5 to be polished is detachably connected to the clamping mechanism. The clamping mechanism includes a lifting member 2, a clamping member 3, and a driving member 23. The lifting member 2 is in lifting cooperation with the machine body 1. A cylinder 26 is installed on the machine body 1. The extending 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 includes a connecting shaft 31, a base 32, and at least two clamping claws 33. The base 32 is fixed to the connecting shaft 31. The clamping claws 33 are evenly spaced along the circumference of the base 32. Each clamping claw 33 is in movable contact with the bottom of the workpiece 5. The number of clamping claws 33 is preferably three. When clamping and fixing the workpiece 5, first place the workpiece 5 on the base 32, and then clamp and fix the workpiece 5 with each clamping claw 33. The connecting shaft 31 of the lifting member 2 and the clamping member 3 is eccentrically arranged. The lifting member 2 is connected to the connecting shaft 31 through a transmission assembly 21. The driving source 24 drives the lifting member 2 and the clamping member 3 to rotate around their own axial directions. The driving member 23 drives the clamping member 3 to rotate around the axial direction of the lifting member 2.

[0031] As Figure 3 and Figure 4 shown in the figure, the transmission assembly 21 is a universal joint. The universal joint connects the lifting member 2 and the connecting shaft 31 at the same time and transmits the rotation of the lifting member 2 to the connecting shaft 31, so that both the lifting member 2 and the connecting shaft 31 can rotate around their own axial directions. The structure and transmission method of the universal joint belong to the prior art and will not be elaborated here. A housing 25 coaxial with the lifting member 2 is provided outside the transmission assembly 21. The connecting shaft 31 is in rotational cooperation with the housing 25. The driving member 23 is in longitudinal sliding cooperation with the housing 25. The driving member 23 is coaxial with the lifting member 2. The housing 25 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 their axial directions at the same time. The driving source 24 can be a motor. The driving source 24 is installed on the machine body 1. A first transmission belt 241 and a second transmission belt 242 are connected to the driving end of the driving source 24. 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 are connected by a key connection method. The connecting member 22 does not rotate relative to the lifting member 2. The first transmission belt 241 is sleeved outside the connecting member 22. The second transmission belt 242 is sleeved outside the driving member 23.

[0032] When polishing the workpiece 5, the air cylinder 26 first drives the lifting member 2 to move upward. 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. Then, the workpiece 5 to be operated is clamped and fixed by the clamping member 3. After that, the air cylinder 26 drives the lifting member 2 to move downward, driving the clamping member 3 and the workpiece 5 to move downward. The axis of the clamping member 3 is offset relative to the lifting member 2 and the working bin 11. When the clamping member 3 moves downward, it drives the workpiece 5 to gradually immerse into the polishing medium in the working bin 11 in a relatively inclined state, reducing the resistance suffered by the workpiece 5 when it immerses into the polishing medium and facilitating the smooth entry of the workpiece 5 into the polishing medium.

[0033] After the workpiece 5 is placed in place, the air cylinder 26 stops working, and the drive source 24 starts to work. The drive source 24 drives the connecting member 22 to rotate through the first transmission belt 241. The lifting member 2 rotates synchronously with the connecting member 22. The clamping member 3 rotates around the connecting shaft 31 under the transmission 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 drive source 24 drives the driving member 23 to rotate through the second transmission belt 242. The housing 25 rotates synchronously with the driving member 23, and the connecting shaft 31 rotates with the housing 25, so that while the clamping member 3 and the workpiece 5 rotate around their own axes, they also rotate around the axis of the driving member 23. When the workpiece 5 rotates in the working bin 11, it will come into full contact with the polishing medium at different heights in the working bin 11, improving the uniformity of the polishing intensity at different positions of the workpiece 5. The movement modes of the workpiece 5 and the clamping member 3 can also promote the longitudinal movement of the polishing medium, preventing the polishing medium of different particle sizes from stratifying and aggregating longitudinally, improving the consistency of the polishing intensity on the workpiece 5, and ensuring the polishing efficiency and polishing effect of the workpiece 5.

[0034] Since there are certain differences in the sizes of workpieces 5 of different models, to ensure the polishing effect of the workpiece 5, it is necessary to completely immerse the workpiece 5 into the polishing medium. The capacity of the working bin 11 is fixed, which results in the need for more polishing medium when polishing small-volume workpieces 5. To adapt to the volume differences of workpieces 5 of different models and save the amount of polishing medium used when the volume of the workpiece 5 is small, such as Figure 1 and Figure 2As shown in the figure, an adjustment component is also provided on the working bin 11. There are multiple groups of adjustment components, and each group of adjustment components is evenly spaced along the circumferential direction of the working bin 11. In this embodiment, preferably four groups of adjustment components are provided. The adjustment component includes a moving bin 4 and an adjusting member 41. The moving bin 4 is in a "U" shape. The bottom of the moving bin 4 is attached to 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 forms a tip at its innermost side. Taking the side facing the axis of the working bin 11 as the inner side, the open end of the moving bin 4 faces outward. The adjusting member 41 pushes the moving bin 4 to slide along the radial direction of the working bin 11. The adjusting member 41 is rod-shaped and is rotationally matched with the outer wall of the working bin 11. The moving bin 4 is slidably matched with the side wall of the working bin 11. A connecting portion is fixed to the outside of the working bin 11 on the moving bin 4. The adjusting member 41 is in threaded cooperation with the connecting portion. By rotating the adjusting member 41, the moving bin 4 can slide along the radial direction of the working bin 11 and change the space inside the working bin 11 to adapt to the polishing work of workpieces 5 of different models.

[0035] The limited-slip differential processing device provided by the present invention drives the workpiece to perform self-rotation and revolution movements simultaneously in the working bin through the clamping mechanism, promotes the full contact of the workpiece with the polishing media at different heights in the working bin, and promotes the longitudinal movement of the polishing media, avoiding the accumulation of polishing media of different particle sizes at different heights in the working bin, ensuring the consistency of the polishing intensity at different positions on the workpiece, and thus improving the polishing effect and efficiency of the workpiece.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0038] 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 should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A limited-slip differential processing device, comprising a machine body, a working chamber is provided on the machine body, and polishing medium is filled in the working chamber, characterized in that, The machine body is also provided with a clamping mechanism. The clamping mechanism includes a lifting member, a clamping member, and a driving member. The lifting member is in lifting cooperation with the machine body and is connected to a driving source. The clamping member is used for detachably connecting with a workpiece. The lifting member and the clamping member are arranged with an offset 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 axial directions, and the driving member drives the clamping member to rotate around the axial direction of the lifting member; The transmission assembly is a universal joint. A housing coaxial with the lifting member is arranged outside the transmission assembly. The clamping member is in rotational cooperation with the housing; The driving member is in longitudinal sliding cooperation with the housing. The driving member is coaxial with the lifting member. The housing does not rotate relative to the driving member. The driving source simultaneously drives the lifting member and the driving member to rotate around their axial directions; The driving end of the driving source is connected with a first transmission belt and a second transmission belt. The lifting member is also connected with a connecting member in a lifting manner. The connecting member does not rotate relative to the lifting member. The first transmission belt is sleeved outside the connecting member, and the second transmission belt is sleeved outside the driving member; While the workpiece rotates by itself, it can also rotate around the axial direction of the driving member, so that the workpiece can fully contact with the polishing media at different heights in the working chamber. At the same time, it can also make the polishing media move longitudinally to avoid the layering and aggregation of polishing media with different particle sizes longitudinally; A cylinder is arranged on the machine body. The extending end of the cylinder is rotatably connected with the lifting member and drives the lifting member to lift. When the lifting frame moves downward, it can drive the clamping member and the workpiece to move downward, so that the workpiece gradually immerses into the polishing media in the working chamber in a relatively inclined state.

2. The limited-slip differential processing device according to claim 1, wherein An adjusting assembly is also arranged on the working chamber. The adjusting assembly includes a moving chamber and an adjusting member. The moving chamber is in a "U" shape, with the side facing the axial direction of the working chamber as the inner side. The open end of the moving chamber faces outward. The adjusting member pushes the moving chamber to slide along the radial direction of the working chamber.

3. The limited-slip differential processing device according to claim 2, characterized in that, The adjusting member is in a rod shape. The adjusting member is in rotational cooperation with the outer wall of the working chamber. The moving chamber is in sliding cooperation with the side wall of the working chamber. The moving chamber is fixed with a connecting portion outside the working chamber. The adjusting member is in threaded cooperation with the connecting portion.

4. The limited-slip differential processing device according to claim 2, wherein There are multiple groups of the adjusting assemblies, and each group of the adjusting assemblies is evenly spaced along the circumferential direction of the working chamber.

5. The limited-slip differential processing device according to claim 2, characterized in that The bottom of the moving chamber is attached to the bottom end face of the working chamber. The thickness of the inner end face of the working chamber increases from top to bottom and forms a tip at its innermost side.

6. The limited-slip differential processing device according to claim 1, characterized in that, The clamping member includes a connecting shaft, a base, and at least two claws. The connecting shaft is connected with the transmission assembly. The base is fixed with the connecting shaft. Each claw is evenly spaced along the circumferential direction of the base. Each claw is in movable abutment with the bottom of the workpiece.

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