A clamping tool structure for auxiliary machining of a motor tooth pressing plate

Abstract

The utility model discloses a motor tooth pressure plate auxiliary processing's clamping tool structure, including the jaw and the support body, and the inside of jaw is equipped with the inclined plane with the tooth pressure plate contact surface, is equipped with the lightening hole array on the surface of support body, and the hole distribution density is less than the support body center area in the area close to the jaw, the support body is still arranged with the taper through -hole in the radial direction, the taper through -hole is communicated with the lightening hole on the support body, and the center line of taper through -hole all points to the place of the center of support body, the taper through -hole is inserted with the locating block, and the overall shape of locating block corresponds with the groove type of tooth pressure plate and is set up, the difference lies in that the lower part of locating block sets up the cone and is assembled with taper through -hole, the utility model's advantage is: through the inclined plane jaw limit axial displacement and the non -uniform lightening hole guarantee dynamic balance, and the precise circumferential positioning of tooth pressure plate is realized in combination with taper through -hole locating block, and the taper hole intercommunication structure is used to pressurize and blow the scrap, and the difficult point of big vibration and difficult chip removal of thin -walled part processing is solved simultaneously, and the scrap rate is reduced obviously.

Description

Technical Field

[0001] This utility model relates to the industrial and mining fields, specifically a clamping fixture structure for auxiliary processing of explosion-proof motor parts. Background Technology

[0002] The tooth clamping plate is a component used to fix and press the stator silicon steel laminations of the electric motor. The advantages and positive effects of this invention are as follows: Because the tooth clamping plate is a relatively thin part, it is prone to deformation when clamped on a lathe. Furthermore, the numerous semi-open grooves on the outermost edge of the circumference create many gaps, further exacerbating the clamping difficulty. Excessive clamping force will cause deformation; conversely, insufficient clamping force makes it difficult to maintain machining stability. On the other hand, in traditional machining methods, the lack of support between the center of the three clamps and the machine tool spindle means that when turning the inner hole of the tooth clamping plate, the axial force will exert a significant impact on this thin part, causing considerable vibration. Therefore, production can only be carried out under lower cutting parameters, greatly limiting production efficiency. Therefore, research on improving the clamping stability of the tooth clamping plate is essential. This research can also improve the overall quality of the equipment. Utility Model Content

[0003] To solve the above problems, this utility model discloses a clamping fixture structure for auxiliary processing of motor tooth pressure plates.

[0004] The specific technical solution is as follows:

[0005] A clamping fixture structure for motor tooth pressure plate assisted machining includes grippers and a support body:

[0006] The inner side of the gripper is provided with a guide slope on the contact surface with the tooth pressure plate. This slope is used to restrict the axial degree of freedom of the tooth pressure plate in the opposite direction to the main shaft.

[0007] The surface of the support is provided with an array of weight-reducing holes, and the hole distribution density is lower in the area near the gripper than in the central area of ​​the support.

[0008] The support body is also provided with conical through holes evenly distributed in the radial direction. The conical through holes are connected to the weight reduction holes on the support body, and the center lines of the conical through holes all point to the center of the support body.

[0009] A positioning block is inserted into the tapered through hole. The overall shape of the positioning block corresponds to the groove of the toothed pressure plate. The difference is that a cone is set below the positioning block to mate with the tapered through hole.

[0010] The clamping jaws are provided in three parts and are locked to the machine tool spindle by screws; the support body is locked to the machine tool spindle by six threaded screws.

[0011] The diameter of the hole inside the support body is more than 1 mm larger than the actual size of the inner hole of the toothed pressure plate.

[0012] The advantages of this utility model are:

[0013] The axial displacement of the tooth pressure plate is restricted by the guide slope on the inner side of the gripper. Combined with the gap design where the inner diameter of the support body is 0.5-1.5mm larger than the inner hole of the tooth pressure plate, effective radial support is provided while avoiding over-constraint. The non-uniformly distributed array of weight-reducing holes on the surface of the support body reduces weight and ensures dynamic balance at high speeds. The radially evenly distributed tapered through holes and the positioning blocks adapted to the groove shape of the tooth pressure plate enhance circumferential positioning stability and play a role in precise positioning. After use, air can be vented into the tapered through holes. Since the tapered through holes are interconnected with the weight-reducing holes and the shape of the tapered through holes ensures that the air is pressurized, the technical effect of chip blowing and removal is achieved. Ultimately, high-precision, low-vibration machining of thin-walled tooth pressure plates is achieved, extending tool life and reducing production costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model after the toothed pressure plate is removed;

[0016] Figure 3 This is a schematic diagram of the overall structure of the present invention after the toothed pressure plate is clamped. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] A clamping fixture structure for motor tooth pressure plate assisted machining includes a jaw 3 and a support body 6.

[0019] The inner side of the gripper 3 is provided with a guide slope 8 on the contact surface with the toothed pressure plate 1;

[0020] The surface of the support body 6 is provided with a weight-reducing hole array, and the hole distribution density is less in the area near the gripper than in the central area of ​​the support body.

[0021] The support body 6 is also provided with conical through holes 61 evenly distributed in the radial direction. The conical through holes 61 are connected to the weight reduction holes on the support body 6, and the center lines of the conical through holes 61 all point to the center of the support body 6.

[0022] A positioning block 4 is inserted into the tapered through hole. The overall shape of the positioning block 4 corresponds to the groove of the toothed pressure plate 1. The difference is that a cone is set below the positioning block 4 to cooperate with the tapered through hole.

[0023] The gripper 3 is provided in three parts and is locked to the clamping mechanism of the machine tool spindle 2 by screws;

[0024] The support body 6 is locked to the machine tool spindle by six threaded screws.

[0025] The diameter of the hole inside the support 6 is more than 1 mm larger than the actual size of the hole inside the toothed pressure plate 1.

[0026] The working principle of this utility model is as follows: the gripper 3 restricts the axial displacement of the tooth pressure plate 1 through the inner guide inclined surface 8, while the support body 6 ensures the stability during processing by having a gap greater than 1mm larger than the inner hole of the tooth pressure plate, and reduces the risk of vibration caused by axial force, avoiding over-constraint; the non-uniform weight-reducing hole array on the surface of the support body 6 reduces the moment of inertia and maintains high-speed dynamic balance, while the positioning block 4 inserted into the radially evenly distributed conical through hole 61 is precisely embedded in the tooth pressure plate groove to strengthen circumferential positioning; after processing, compressed gas is introduced into the conical through hole 61. Because the conical through hole 61 is connected to the weight-reducing hole and the conical structure pressurizes the airflow, a high-speed chip blowing flow is formed to remove the chips in the gap between the workpiece and the tooling, and finally realizes the integration of high-precision processing and automatic cleaning of thin-walled tooth pressure plates.

Claims

1. A clamping fixture structure for auxiliary machining of motor gear pressure plates, characterized in that: Including grippers (3) and a support (6), characterized in that: The inner side of the gripper (3) is provided with a guide slope (8) on the contact surface between the gripper (3) and the toothed plate (1); The surface of the support (6) is provided with a weight-reducing hole array, and the hole distribution density is less in the area near the gripper than in the central area of ​​the support. The support body (6) is also provided with conical through holes (61) evenly distributed in the radial direction. The conical through holes (61) are connected to the weight reduction holes on the support body (6). The center lines of the conical through holes (61) all point to the center of the support body (6). A positioning block (4) is inserted into the tapered through hole. The overall shape of the positioning block (4) corresponds to the groove of the toothed pressure plate (1). The difference is that a cone is set below the positioning block (4) to cooperate with the tapered through hole for assembly.

2. The clamping fixture structure for auxiliary machining of motor gear pressure plates according to claim 1, characterized in that: The gripper (3) is provided in three parts and is locked to the machine tool spindle (2) by screws; the support body (6) is locked to the machine tool spindle by six threaded screws.

3. The clamping fixture structure for auxiliary machining of motor gear pressure plates according to claim 1, characterized in that: The diameter of the hole inside the support (6) is more than 1 mm larger than the actual size of the hole inside the toothed pressure plate (1).

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