Lathe clamp for machining motor shell

Abstract

The utility model relates to the technical field of motor casing clamps, and discloses a lathe clamp for machining a motor casing, which comprises a clamping jaw disc, a clamping component is arranged on one side of a clamping jaw of the clamping jaw disc, and the clamping component comprises a fixing plate detachably mounted on one side of the clamping jaw of the clamping jaw disc. An abutting clamping plate and a driven clamping plate are arranged on the side, close to the circle center of the clamping jaw disc, of the fixing plate. The clamping assemblies are arranged on the clamping jaws of the clamping jaw disc, the inward extrusion force on the motor shell when the motor shell is clamped is reduced under the condition that normal use of the clamping jaw disc is not affected, meanwhile, the universality of the clamping jaw disc is guaranteed, the abutting clamping plates are matched with the driven clamping plates during clamping, and the clamping efficiency is improved. The motor shell is clamped and fixed from the inner wall and the outer wall of the motor shell, so that clamping force is mainly applied between the inner wall and the outer wall of the motor shell instead of purely applying pressure to the outer wall of the motor shell, and the situation that the machining precision is affected by possible micro deformation of the motor shell is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of motor housing clamps, in particular to a lathe clamp for machining motor housings. Background Art

[0002] The motor includes a stator located outside and a rotor located inside the stator. The motor casing is used to fix the motor stator. During the production process of the motor casing, CNC machine tools are generally required to process the motor casing. Therefore, a lathe fixture is required to clamp and fix the motor casing on the lathe. Generally, a claw disk is used to clamp and fix the motor casing.

[0003] An existing lathe machining fixture and CNC lathe for a motor casing (Announcement No.: CN216065598U) have at least the following disadvantages: the device only clamps and fixes the motor casing from the outer wall of the motor casing by means of a clamping block, so that the motor casing is completely fixed by an extrusion force from the outside to the inside. Since the motor casing is hollow, it may cause slight deformation when subjected to moving pressure, thereby affecting the machining accuracy, for example, causing an out-of-tolerance in the roundness of the aperture, etc. For this reason, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a lathe fixture for machining a motor housing.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A lathe fixture for processing motor casings includes a claw disk, a clamping assembly is provided on one side of the claw disk, the clamping assembly includes a fixed plate detachably mounted on the clamping side of the claw disk, an abutting clamping plate and a driven clamping plate are respectively provided on the side of the fixed plate close to the center of the claw disk, a first rack and a second rack are respectively fixed on the side of the abutting clamping plate and the driven clamping plate close to the fixed plate, a plug-in slot is provided on the side of the fixed plate close to the center of the claw disk, a small gear shaft and a large gear shaft are rotatably connected to the interior of the plug-in slot close to the front and rear sides.

[0007] As a further solution of the present invention, the large gear shaft is a composite gear shaft, which includes a shaft rod, a small gear is fixed to the middle end of the shaft rod, and a large gear is fixed to both ends of the shaft rod. The small gear shaft is meshed with the small gear of the large gear shaft, and the diameter ratio of the small gear of the small gear shaft to the large gear shaft is one to one, and the diameter ratio of the small gear shaft to the large gear of the large gear shaft is one to two or one to three. The first rack is meshed with the front teeth of the small gear shaft, and the second rack is meshed with the rear teeth of the large gear of the large gear shaft, and the abutment plate is located between the driven plate and the fixed plate.

[0008] As a further solution of the present invention, a positioning strip is fixed to the rear side of the abutting splint, and an avoidance hole is opened on the driven splint at a position corresponding to the positioning strip, and the positioning strip is slidably inserted into the inside of the avoidance hole.

[0009] As a further solution of the present invention, a first limit rod and a second limit rod are slidably inserted on one side of the fixed plate close to the center of the claw disk. The bottom end of the first limit rod is fixed to the side of the driven clamping plate close to the fixed plate, and the bottom end of the second limit rod is fixed to the side of the abutting clamping plate close to the fixed plate.

[0010] As a further solution of the present invention, a movable sleeve on the outer wall of the second limiting rod is provided with a reset spring, one end of the reset spring abuts against the end of the second limiting rod, and the other end of the reset spring abuts against the side of the fixed plate farther than the center of the claw disk.

[0011] As a further solution of the present invention, three bolts are slidably inserted into the front side of the fixing plate, and three threaded holes corresponding to the positions of the bolts are opened on the front side of the claw of the claw plate, and the bolts are threadedly connected to the threaded holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By arranging a clamping assembly on the claws of the claw disk, the inward extrusion force on the motor case when clamping the motor case is reduced without affecting the normal use of the claw disk, while ensuring the versatility of the claw disk. During clamping, an abutting clamping plate and a driven clamping plate are used in combination to clamp and fix the motor case from the inner and outer walls of the motor case respectively, so that the clamping force is mainly applied between the inner and outer walls of the motor case instead of simply applying pressure to the outer wall of the motor case, effectively preventing possible slight deformation of the motor case from affecting the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a lathe fixture for machining a motor housing proposed in the present invention;

[0015] Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of a lathe fixture for machining a motor housing proposed in the present invention;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixed plate of a lathe fixture for machining a motor housing proposed by the present invention;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the abutting clamping plate of a lathe fixture for machining a motor housing proposed by the present invention.

[0018] In the figure: 1. Claw plate; 2. Fixed plate; 201. Abutting splint; 202. Driven splint; 203. First rack; 204. Second rack; 205. Connecting slot; 206. Small gear shaft; 207. Large gear shaft; 3. Positioning strip; 301. Avoidance hole; 4. First limiting rod; 401. Second limiting rod; 5. Reset spring; 6. Bolt; 601. Threaded hole. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-4 As shown, a lathe fixture for processing motor casings includes a jaw plate 1, and a clamping assembly is provided on one side of the jaw plate 1. The clamping assembly includes a fixed plate 2 that is detachably mounted on the clamping side of the jaw plate 1. An abutting clamping plate 201 and a driven clamping plate 202 are respectively provided on the side of the fixed plate 2 close to the center of the jaw plate 1. The abutting clamping plate 201 and the driven clamping plate 202 are respectively fixed with a first rack 203 and a second rack 204 on the side close to the fixed plate 2. A plug-in slot 205 is provided on the side of the fixed plate 2 close to the center of the jaw plate 1, and a small gear shaft 206 and a large gear shaft 207 are rotatably connected to the interior of the plug-in slot 205 close to the front and rear sides.

[0023] like Figure 2-Figure 4As shown, in this embodiment, the large gear shaft 207 is a composite gear shaft, the large gear shaft 207 includes a shaft, a pinion is fixed at the middle end of the shaft, and large gears are fixed at both ends of the shaft, the small gear shaft 206 is meshed with the small gear of the large gear shaft 207, the small gear diameter ratio of the small gear shaft 206 to the large gear shaft 207 is one to one, and the diameter ratio of the small gear shaft 206 to the large gear shaft 207 is one to two or one to three, the first rack 203 is meshed with the front teeth of the small gear shaft 206, and the second rack 20 4 meshes with the rear teeth of the large gear of the large gear shaft 207, and the abutting splint 201 is located between the driven splint 202 and the fixed plate 2. By sleeve-fitting the motor housing between the four sets of slave abutting splints 201 and the driven splint 202, the claw plate 1 is started to drive the claw to drive the fixed plate 2 to move closer to the motor housing. At this time, the abutting splint 201 abuts against the outer wall of the motor housing and is subjected to reverse extrusion force, so that the abutting splint 201 drives the first rack 203 to slide inside the plug-in slot 205, and drives the small gear shaft 20 6 rotates counterclockwise. Under the meshing action of the small gear of the small gear shaft 206 and the large gear shaft 207, and because the diameter ratio of the small gear of the small gear shaft 206 and the large gear shaft 207 is one to one, the large gear shaft 207 and the small gear shaft 206 rotate clockwise at the same angular velocity. At this time, the large gear of the large gear shaft 207 rotates synchronously clockwise and drives the second rack 204 and the driven splint 202 to move. The moving direction of the driven splint 202 is the same as the moving direction of the abutting splint 201. At the same time, due to the small gear shaft 20 The diameter ratio of the large gear of the large gear shaft 207 to the large gear shaft 207 is one to two or one to three, so that the moving speed of the driven clamping plate 202 is two to three times that of the abutting clamping plate 201, so that the driven clamping plate 202 can quickly abut against the inner wall of the motor housing. At this time, the abutting clamping plate 201 cooperates with the driven clamping plate 202 to clamp and fix the inner and outer walls of the motor housing. Since the clamping force is mainly applied between the inner and outer walls of the motor housing instead of simply applying pressure to the outer wall of the motor housing, it can effectively prevent the possible slight deformation of the motor housing from affecting the processing accuracy.

[0024] like Figure 2-Figure 4 As shown, in this embodiment, a positioning strip 3 is fixed to the rear side of the abutting splint 201, and an avoidance hole 301 is opened on the driven splint 202 at a position corresponding to the positioning strip 3. The positioning strip 3 is slidably inserted into the inside of the avoidance hole 301. Through the setting and use of the positioning strip 3, when the motor is placed between the four groups of slave abutting splints 201 and the driven splint 202, the end face of the motor is in contact with the four positioning strips 3, which can play a positioning role on the motor housing, so that the motor housing is placed parallel to the claw disk 1, thereby ensuring the processing accuracy of the motor housing.

[0025] like Figure 2-Figure 4As shown, in this embodiment, the first limiting rod 4 and the second limiting rod 401 are respectively slidably inserted into the side of the fixed plate 2 close to the center of the claw disk 1, the bottom end of the first limiting rod 4 is fixed to the side of the driven splint 202 close to the fixed plate 2, and the bottom end of the second limiting rod 401 is fixed to the side of the abutting splint 201 close to the fixed plate 2, and the first limiting rod 4 and the second limiting rod 401 can respectively play a role in limiting and supporting the movement of the driven splint 202 and the abutting splint 201, thereby increasing the stability of the driven splint 202 and the abutting splint 201 during movement.

[0026] like Figure 2-Figure 4 As shown, in this embodiment, a return spring 5 is movably sleeved on the outer wall of the second limit rod 401, and one end of the return spring 5 abuts against the end of the second limit rod 401, and the other end of the return spring 5 abuts against the side of the fixed plate 2 that is farther than the center of the circle of the claw disk 1. By setting the return spring 5, when the abutting splint 201 approaches the process of clamping the motor housing, as the second limit rod 401 slides on the fixed plate 2, the return spring 5 is squeezed. When the motor housing is processed and the abutting splint 201 is driven away from the motor housing, the return spring 5 can rebound quickly and drive the second limit rod 401 to reset, thereby realizing the rapid reset of the abutting splint 201 and the driven splint 202 respectively, which is convenient for clamping and fixing the next motor housing.

[0027] like Figure 2-Figure 4 As shown, in this embodiment, three bolts 6 are slidably inserted into the front side of the fixing plate 2, and three threaded holes 601 corresponding to the positions of the bolts 6 are opened on the front side of the claw of the claw plate 1. The bolts 6 are threadedly connected to the threaded holes 601. The bolts 6 and the claws of the claw plate 1 are detachably installed through the fixing plate 2 using the bolts 6, which makes it easy to disassemble and assemble the clamping assembly at any time, thereby not affecting the normal use of the claw plate 1 and facilitating the claw plate 1 to fix other workpieces.

[0028] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: in use, by sleeve-fitting the motor housing between the four sets of slave abutment clamps 201 and the driven clamps 202, the claw plate 1 is started to drive the claw to drive the fixed plate 2 to approach the motor housing. At this time, the abutment clamp 201 abuts against the outer wall of the motor housing and is subjected to a reverse extrusion force, so that the abutment clamp 201 drives the first rack 203 to slide inside the plug-in slot 205, and drives the small gear shaft 206 to rotate counterclockwise. Under the action of the small gear meshing with the large gear shaft 207, and since the small gear diameter ratio of the small gear shaft 206 to the large gear shaft 207 is one to one, the large gear shaft 207 and the small gear shaft 206 rotate clockwise at the same angular velocity. At this time, the large gear of the large gear shaft 207 rotates synchronously clockwise and drives the second rack 204 and the driven splint 202 to move, and the moving direction of the driven splint 202 is the same as the moving direction of the abutting splint 201. At the same time, since the diameter ratio of the large gear of the small gear shaft 206 and the large gear shaft 207 is one to two or one to three, the moving speed of the driven splint 202 is two to three times that of the abutting splint 201, so that the driven splint 202 quickly abuts against the inner wall of the motor housing. At this time, the abutting splint 201 cooperates with the driven splint 202 to clamp and fix the inner and outer walls of the motor housing. Since the clamping force is mainly applied to the motor housing The inner and outer walls of the motor housing are not simply pressurized on the outer wall of the motor housing, which effectively prevents the possible slight deformation of the motor housing from affecting the processing accuracy. Through the setting and use of the positioning strips 3, when the motor is placed between the four sets of slave abutting splints 201 and the driven splint 202, the end face of the motor is abutted against the four positioning strips 3, which can play a positioning role for the motor housing, so that the motor housing is placed parallel to the claw disk 1, ensuring the processing accuracy of the motor housing. The first limiting rod 4 and the second limiting rod 401 can respectively limit and support the movement of the driven splint 202 and the abutting splint 201, increase the stability of the driven splint 202 and the abutting splint 201 during movement, and A reset spring 5 is provided. When the abutting clamping plate 201 approaches the clamping motor housing, as the second limiting rod 401 slides on the fixing plate 2, the reset spring 5 is squeezed. When the motor housing is processed and the abutting clamping plate 201 is driven away from the motor housing, the reset spring 5 can rebound quickly and drive the second limiting rod 401 to reset, thereby achieving rapid reset of the abutting clamping plate 201 and the driven clamping plate 202 respectively, which is convenient for clamping and fixing the next motor housing. The fixing plate 2 is detachably installed with the claws of the claw plate 1 using bolts 6, which makes it easy to disassemble and assemble the clamping assembly at any time, so as not to affect the normal use of the claw plate 1, and to facilitate the claw plate 1 to fix other workpieces.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A lathe fixture for machining a motor housing, comprising a jaw plate (1), characterized in that: A clamping assembly is provided on one side of the clamping claw disc (1), and the clamping assembly includes a fixed plate (2) detachably mounted on the clamping claw disc (1) side; an abutting clamping plate (201) and a driven clamping plate (202) are respectively provided on one side of the fixed plate (2) close to the center of the clamping claw disc (1); a first rack (203) and a second rack (204) are respectively fixed on the abutting clamping plate (201) and the driven clamping plate (202) on one side close to the fixed plate (2); a plug-in slot (205) is provided on one side of the fixed plate (2) close to the center of the clamping claw disc (1); a small gear shaft (206) and a large gear shaft (207) are rotatably connected in the plug-in slot (205) close to the front and rear sides.

2. A lathe fixture for machining a motor housing according to claim 1, characterized in that: The large gear shaft (207) is a composite gear shaft. The large gear shaft (207) includes a shaft, a small gear is fixed to the middle end of the shaft, and a large gear is fixed to both ends of the shaft. The small gear shaft (206) meshes with the small gear of the large gear shaft (207). The diameter ratio of the small gear shaft (206) to the large gear shaft (207) is one to one, and the diameter ratio of the small gear shaft (206) to the large gear of the large gear shaft (207) is one to two or one to three. The first rack (203) meshes with the front teeth of the small gear shaft (206), and the second rack (204) meshes with the rear teeth of the large gear of the large gear shaft (207). The abutting splint (201) is located between the driven splint (202) and the fixed plate (2).

3. A lathe fixture for machining a motor housing according to claim 2, characterized in that: A positioning strip (3) is fixed to the rear side of the abutting clamping plate (201), and an avoidance hole (301) is provided on the driven clamping plate (202) at a position corresponding to the positioning strip (3), and the positioning strip (3) is slidably inserted into the inside of the avoidance hole (301).

4. A lathe fixture for machining a motor housing according to claim 3, characterized in that: A first limiting rod (4) and a second limiting rod (401) are slidably inserted into one side of the fixed plate (2) close to the center of the claw plate (1), the bottom end of the first limiting rod (4) is fixed to the side of the driven clamping plate (202) close to the fixed plate (2), and the bottom end of the second limiting rod (401) is fixed to the side of the abutting clamping plate (201) close to the fixed plate (2).

5. The lathe fixture for machining a motor housing according to claim 4, characterized in that: A return spring (5) is movably sleeved on the outer wall of the second limiting rod (401), one end of the return spring (5) abuts against the end of the second limiting rod (401), and the other end of the return spring (5) abuts against a side of the fixing plate (2) that is farther than the center of the claw disk (1).

6. A lathe fixture for machining a motor housing according to claim 5, characterized in that: Three bolts (6) are slidably inserted into the front side of the fixing plate (2), and three threaded holes (601) corresponding to the positions of the bolts (6) are opened on the front side of the claw of the claw plate (1), and the bolts (6) are threadedly connected to the threaded holes (601).

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