Rounding machine for finishing and processing motor casing

Abstract

The utility model discloses a rounding machine for finishing and processing a motor casing, which relates to the technical field of rounding machines, and comprises a rack, the top end of which is provided with a die positioning seat; the bottom of the rounding die is movably inserted into the inner side of the die positioning seat; the conical core shaft is vertically inserted into the inner side of the rounding die in a sliding manner, and the conical core shaft drives the rounding die to expand and contract through lifting action; and the hydraulic jacking device is fixedly mounted at the bottom of the rack, and the hydraulic jacking device is used for driving the conical mandrel to ascend and descend. According to the rounding machine provided by the utility model, the hydraulic jacking device can be used for driving the conical core shaft to lift in the middle of the rounding die, and the conical core shaft can drive the rounding die to expand or contract in the horizontal direction through the lifting action in cooperation with the taper fit between the conical core shaft and the rounding die; and therefore, the inner wall of the motor shell sleeving the outer part is rounded, and the finishing work of the inner wall of the motor shell is more convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of rounding machine technology, and in particular to a rounding machine for trimming motor housings. Background Technology

[0002] The motor housing is one of the important structural components of an electric motor. It has a circular hollow cavity for mounting the stator and rotor. To ensure the manufacturing quality of the motor, the hollow inner wall of the motor housing needs to maintain a neat roundness.

[0003] In the existing technology, during the production and processing of motor housings, due to working errors, the roundness of the inner cavity of some produced motor housings is not neat enough, forming an elliptical inner cavity, which affects the quality of subsequent motor assembly. Currently, there is a lack of equipment specifically for the rounding of the inner cavity of motor housings, and the main method of manual grinding is used for rounding. This not only changes the operation but also increases the difficulty of rounding, making it difficult to meet the actual use requirements. Therefore, a rounding machine for the finishing and processing of motor housings is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a rounding machine for trimming motor housings, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rounding machine for trimming motor housings, comprising:

[0006] A frame, the top of which is equipped with a mold positioning seat;

[0007] A circular mold, the bottom of which is movably inserted into the inner side of the mold positioning seat, is used to make the inner cavity of the motor housing circular;

[0008] A conical mandrel is vertically slidably inserted into the inner side of a circular mold. The conical mandrel drives the circular mold to expand and contract through a lifting action.

[0009] A hydraulic lifting device is fixedly installed at the bottom of the frame and is used to drive the conical mandrel to rise and fall.

[0010] Preferably, the circular mold includes a plurality of tensioning springs and a tensioning spring;

[0011] Multiple tension springs are arranged in a circular array to form a hollow cylinder, and the thickness of the tension springs gradually increases along the direction closer to the frame;

[0012] There are two tightening springs. The two ends of the split support mold are provided with arc grooves that match the tightening springs. The tightening springs are sleeved on the inner side of the tightening springs at the same end position of the multiple tightening springs.

[0013] Preferably, the frame includes a support frame, and a processing table for supporting the mold positioning seat is provided above the support frame. Support columns are fixedly connected to the corners between the processing table and the support frame.

[0014] Preferably, a plurality of pressing clamps are provided at intervals on the top of the processing table and on the outer side of the mold positioning seat. The pressing clamps are used to press and position the mold positioning seat on the processing table.

[0015] Preferably, the conical mandrel is frustum-shaped, and the outer wall of the conical mandrel and the inner cavity of the circular mold have a taper that is compatible with each other.

[0016] Preferably, the bottom of the conical mandrel extends to the position below the processing table, a threaded post is slidably inserted into the middle of the conical mandrel, and a positioning nut is threadedly connected to the outer wall of the threaded post at both ends of the conical mandrel.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] The circular forming machine provided by this utility model can drive the conical mandrel to move up and down in the middle of the circular forming mold through a hydraulic lifting device. With the taper fit between the conical mandrel and the circular forming mold, the conical mandrel can drive the circular forming mold to expand or contract in the horizontal direction through the lifting action, thereby performing circular forming processing on the inner wall of the motor housing fitted outside it, making the trimming work of the inner wall of the motor housing more convenient and efficient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of the circular mold of this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the conical mandrel of this utility model.

[0022] Figure 4 This is a side sectional view of the circular mold of this utility model.

[0023] In the diagram: 100, frame; 101, support frame; 102, processing table; 103, support column; 200, mold positioning seat; 300, full-circle mold; 301, segmented support mold; 302, arc slot; 303, tensioning spring; 400, conical mandrel; 401, threaded column; 402, positioning nut; 500, downward clamping fixture; 600, hydraulic lifting device. Detailed Implementation

[0024] 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.

[0025] This utility model provides, for example Figure 1-4 The illustrated circular milling machine for motor housing finishing includes a frame 100, a circular milling mold 300, a conical mandrel 400, and a hydraulic lifting device 600. The circular milling mold 300 can expand or contract horizontally, allowing adjustment of its outer diameter. A mold positioning seat 200 is mounted at the top of the frame 100. The mold positioning seat 200 is hollow to accommodate the expansion of the circular milling mold 300. The bottom of the circular milling mold 300 is movably inserted into the inner side of the mold positioning seat 200. The circular milling mold 300 is used for circular milling of the motor housing cavity. The conical mandrel 400 is vertically slidably inserted into the inner side of the circular milling mold 300. The conical mandrel 400 drives the circular milling mold 300 to expand and contract through lifting actions. The hydraulic lifting device 600 is fixedly mounted on the frame. At the bottom of 100, the hydraulic lifting device 600 is used to drive the conical mandrel 400 to rise and fall. When performing the rounding process on the inner wall of the motor housing, the motor housing is placed on the rounding mold 300. The hydraulic lifting device 600 is activated, driving the conical mandrel 400 to rise and fall within a preset height range. While the conical mandrel 400 is rising and falling, it drives the rounding mold 300 to expand and contract, causing the outer diameter of the rounding mold 300 to increase and decrease sequentially. Since the outer wall of the rounding mold 300 is a standard circle, the rounding process on the inner wall of the motor housing can be achieved when the outer wall of the rounding mold 300 expands and squeezes the inner wall of the motor housing. At the same time, by causing the motor housing and the rounding mold 300 to rotate relative to each other, the rounding operation of the rounding mold 300 on different positions of the inner wall of the motor housing can be adjusted.

[0026] The frame 100 includes a support frame 101. A processing table 102 for supporting the mold positioning seat 200 is provided above the support frame 101. Support columns 103 are fixedly connected to the corners between the processing table 102 and the support frame 101. Multiple pressing clamps 500 are spaced apart at the top of the processing table 102 and on the outside of the mold positioning seat 200. The pressing clamps 500 are used to press and position the mold positioning seat 200 on the processing table 102. The hydraulic lifting device 600 is generally a hydraulic cylinder, which is fixedly installed at the top of the support frame 101 and connected to the conical mandrel 400 to provide power for the lifting and lowering of the conical mandrel 400. The pressing clamps 500 position and fix the mold positioning seat 200 on the processing table 102, ensuring that the mold positioning seat 200 is installed in a stable position. It can also be disassembled to facilitate the replacement of the corresponding mold positioning seat 200 and the whole round mold 300 according to the usage requirements.

[0027] Furthermore, the conical mandrel 400 is frustum-shaped, and its diameter gradually decreases along the direction approaching the processing table 102. The diameter of the inner cavity of the round mold 300 gradually increases along the direction approaching the processing table 102, so that the outer wall of the conical mandrel 400 and the inner cavity of the round mold 300 have a mutually compatible taper. The round mold 300 includes multiple tension springs 303 and tension springs 303 arranged in a ring array to form a hollow cylinder. The thickness of the tension springs 303 gradually increases along the direction approaching the frame 100. There are two tension springs 303. The two ends of the split mold 301 are provided with arc-shaped slots 302 that match the tension springs 303. The tension springs 303 are sleeved on the multiple tension springs. The inner side of the tensioning spring 303 at the same end of the spring 303 is fitted with two tensioning springs 303 into the arc-shaped slots 302 at both ends of the outer wall of the round mold 300. This allows the multiple segmented support molds 301 to expand and then automatically retract using the elastic contraction force of the tensioning springs 303 after losing their expansion force. In this way, when the conical mandrel 400 descends, the tapered shape can be used to squeeze the multiple segmented support molds 301 in the round mold 300 outward, causing the multiple segmented support molds 301 to extend and open in the horizontal direction to round the inner wall of the motor housing. Subsequently, after the conical mandrel 400 rises, the tensioning springs 303 can be used to automatically retract the multiple opened segmented support molds 301 to their initial positions, thereby realizing the reciprocating rounding action of the round mold 300.

[0028] In a preferred embodiment, the bottom of the conical mandrel 400 extends to the position below the processing table 102. A threaded post 401 is slidably inserted into the middle of the conical mandrel 400. Positioning nuts 402 are threadedly connected to the outer wall of the threaded post 401 and at both ends of the conical mandrel 400. By adjusting the position of the two positioning nuts 402 on the outer wall of the threaded post 401, the position of the conical mandrel 400 on the threaded post 401 can be adjusted, thereby adjusting the initial degree of opening of the conical mandrel 400 to the round mold 300. At the same time, with the lifting stroke of the hydraulic lifting device 600 remaining unchanged, the opening range of the round mold 300 can be adjusted to meet the round processing requirements of the inner wall of motor housings of different sizes, thereby improving the adaptability of the rounding machine.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rounding machine for trimming motor housings, characterized in that, include: A frame (100) is provided with a mold positioning seat (200) mounted on its top. A circular mold (300) is provided, the bottom of which is movably inserted into the inner side of the mold positioning seat (200). The circular mold (300) is used to make the inner cavity of the motor housing circular. A conical mandrel (400) is vertically slidably inserted into the inner side of the circular mold (300). The conical mandrel (400) drives the circular mold (300) to expand and contract through lifting and lowering actions. A hydraulic lifting device (600) is fixedly installed at the bottom of the frame (100) and is used to drive the conical mandrel (400) to rise and fall.

2. The rounding machine for trimming motor housings according to claim 1, characterized in that, The circular mold (300) includes multiple tension springs (303) and tension springs (303); Multiple tension springs (303) are arranged in a ring array to form a hollow cylinder, and the thickness of the tension springs (303) gradually increases along the direction close to the frame (100); There are two tightening springs (303). The two ends of the split support mold (301) are provided with arc grooves (302) that match the tightening springs (303). The tightening springs (303) are sleeved on the inner side of the tightening springs (303) at the same end position of the multiple tightening springs (303).

3. The rounding machine for trimming motor housings according to claim 2, characterized in that, The frame (100) includes a support frame (101), and a processing table (102) for supporting the mold positioning seat (200) is provided above the support frame (101). Support columns (103) are fixedly connected at the corners between the processing table (102) and the support frame (101).

4. A rounding machine for trimming motor housings according to claim 3, characterized in that, Multiple pressing clamps (500) are provided at intervals at the top of the processing table (102) and at the outer side of the mold positioning seat (200). The pressing clamps (500) are used to press and position the mold positioning seat (200) on the processing table (102).

5. A rounding machine for trimming motor housings according to claim 4, characterized in that, The conical mandrel (400) is frustum-shaped, and the outer wall of the conical mandrel (400) and the inner cavity of the round mold (300) have a taper that is compatible with each other.

6. A rounding machine for trimming motor housings according to claim 5, characterized in that, The bottom of the conical mandrel (400) extends to the position below the processing table (102). A threaded post (401) is slidably inserted into the middle of the conical mandrel (400). A positioning nut (402) is threadedly connected to the outer wall of the threaded post (401) and at both ends of the conical mandrel (400).

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