Stator bar positioning and head cutting device

Abstract

The utility model discloses a stator bar positioning and head cutting device, which relates to the field of motor stator bar processing and comprises a lead bracket, a head cutting block is mounted on the lead bracket, a front-back through cavity is arranged on the head cutting block, and a compression component is arranged in the cavity of the head cutting block. The pressing assembly comprises an upper pressing block, a lower pressing block, a left clamping block and a right clamping block, the left clamping block and the right clamping block are located between the upper pressing block and the lower pressing block, a centering rod penetrates through the middle of the upper pressing block and is vertically arranged, and the upper end of the centering rod penetrates through the top of the head cutting block. A guide plate is installed on the rear portion of the head cutting block, two guide grooves are formed in the guide plate, the guide grooves are matched with the rear wall of the head cutting block to form two guide holes, and stamping knives are arranged in the two guide holes. According to the utility model, the technical problem of poor cutting precision in the stator bar processing process in the prior art is solved, and the stator bar processing quality is improved.

Description

Technical Field

[0001] The utility model relates to the processing field of motor stator bars, in particular to a positioning and cutting device for stator bars. Background Technique

[0002] As a component of a motor, the main function of a stator bar is to conduct current during motor operation and withstand electromagnetic forces. The design, manufacturing, and processing quality of stator bars are directly related to the performance and service life of the motor.

[0003] During the production process of stator bars, the cutting process is an essential step. Due to the requirements of motor design, both ends of the stator bar often need to be processed into a specific shape or have excess parts removed to ensure its correct positioning and connection in the motor. In the prior art, for the cutting process of stator bars, after manual scribing and positioning, a saw is usually used for cutting. During the scribing process, it is necessary to carefully measure and mark the cutting position, and during the cutting process, the operator needs to skillfully control the saw. Therefore, the existing processing method requires operators to have a high technical level and rich experience.

[0004] Based on this, the existing cutting method for stator bars has significant technical problems: saw cutting may cause problems such as uneven cutting heads and large dimensional errors due to improper operation or external interference. Therefore, it is difficult to guarantee the quality of stator bars processed by the prior art. Content of the Utility Model

[0005] By providing a positioning and cutting device for stator bars in the embodiments of this application, the technical problem of poor cutting accuracy in the processing of stator bars in the prior art is solved, and the processing quality is improved.

[0006] To solve the above technical problems, the utility model adopts the following technical solution. A positioning and cutting device for stator bars includes a lead wire bracket, on which a cutting block is installed. A cavity that penetrates through the front and back is provided on the cutting block. A pressing component is arranged in the cavity of the cutting block. The pressing component includes an upper pressing block, a lower pressing block, and two left and right clamping blocks located between the upper pressing block and the lower pressing block. A centering rod is vertically arranged through the middle of the upper pressing block, and the upper end of the centering rod penetrates through the top of the cutting block. A guide plate is installed at the rear of the cutting block, and two guide grooves are provided on the guide plate. The guide grooves cooperate with the rear wall of the cutting block to form two guide holes, and a punching knife is arranged in each of the two guide holes.

[0007] When cutting stator bars with the aid of this device, the ends of the stator bars need to be placed in the cavity of the cutting head block and fixed with a pressing component. Since a centering rod is provided in the middle of the upper pressing block of the pressing component and the centering rod can form an isolation between two rows of stator bars, during the process of pressing the stator bars from left and right, the two rows of stator bars can be kept aligned with the lower cutting positions of the two cutters respectively through the centering rod, thus improving the accuracy of the cutting head size and ensuring the cutting quality of the stator bars.

[0008] Furthermore, a top pressing bolt is installed on the top of the cutting head block in a threaded manner. The lower end of the top pressing bolt can contact the upper pressing block after passing through the top of the cutting head block. Thus, by pressing the upper pressing block with the top pressing bolt, the fixation of the stator bar in the vertical direction can be achieved.

[0009] Furthermore, side pressing bolts are installed on the two side walls of the cutting head block in a threaded manner. One end of the side pressing bolt can contact the left and right clamping blocks after horizontally passing through the side wall of the cutting head block. Thus, by pressing the left and right clamping blocks with the side pressing bolts, the fixation of the stator bar in the left and right directions can be achieved.

[0010] Furthermore, protective strips are provided on the surfaces of the upper pressing block, the lower pressing block and the two left and right clamping blocks that are used to contact the stator bars. Through the protective strips, it can effectively prevent scratching or damage to the surface of the stator bars during the clamping process, thus ensuring the integrity of the stator bars.

[0011] Furthermore, a protrusion is provided at the lower end of the cutting head block. Correspondingly, a notch is provided on the lead bracket. A wedge is fixed after the protrusion passes through the notch. In this way, when it is necessary to fix this device, the protrusion can be first passed through the workbench, and then the wedge can be inserted into the notch under the workbench to realize the fixation of this device and the workbench.

[0012] Furthermore, the centering rod penetrates through the left and right middle positions at the top of the cutting head block.

[0013] Furthermore, the material of the punching tool is 6Crw2Si. Thus, it can be ensured that the punching tool is not easily worn during the cutting process, thereby improving the cutting efficiency and cutting quality.

[0014] It can be seen from the above technical solutions that the utility model has at least the following technical effects or advantages:

[0015] When cutting stator bars with the aid of this device, the ends of the stator bars need to be placed in the cavity of the cutting head block and fixed with a pressing component. Since a centering rod is provided in the middle of the upper pressing block of the pressing component and the centering rod can form an isolation between two rows of stator bars, during the process of pressing the stator bars from left and right, the two rows of stator bars can be kept aligned with the lower cutting positions of the two cutters respectively through the centering rod, thus improving the accuracy of the cutting head size and ensuring the cutting quality of the stator bars. Brief Description of the Drawings

[0016] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the drawings required for description. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0017] Figure 1 It is a schematic structural diagram of the whole of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the cutting head block in the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the guide plate in the present utility model;

[0020] Figure 4 It is a schematic structural diagram of the punching knife in the present utility model.

[0021] Description of the reference numerals: 1. Lead bracket, 2. Cutting head block, 3. Punching knife, 4. Protrusion, 5. Wedge, 6. Guide plate, 7. Upper pressing block, 8. Lower pressing block, 9. Left and right clamping blocks, 10. Centering rod, 11. Top pressing bolt, 12. Side pressing bolt. Detailed Embodiment

[0022] To enable those skilled in the art to better understand the technical solution in the present utility model, the following will clearly and completely describe the technical solution in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments in this patent, other embodiments obtained by those of ordinary skill in the art without creative efforts all fall within the scope of protection of this patent.

[0023] The present utility model discloses a stator bar positioning and cutting head device, as Figure 1 shown, which includes a lead bracket 1. A cutting head block 2 is installed on the lead bracket 1. A cavity penetrating through the front and rear is provided on the cutting head block 2, and a pressing assembly is arranged in the cavity of the cutting head block 2. Two punching knives 3 are installed at the rear of the cutting head block 2. In one example, the stator bar to be processed can be placed in the cavity of the cutting head block 2, and it is pressed by using the pressing assembly, and then a force is applied to the two punching knives 3, and the cutting head processing of the stator bar can be completed.

[0024] In this embodiment, in combination with Figure 1 、 Figure 2As shown, a protrusion 4 is provided at the lower end of the cutting head block 2. Correspondingly, a through slot is provided on the lead wire bracket 1 for the protrusion 4 at the lower end of the cutting head block 2 to pass through. After the protrusion 4 at the lower end of the cutting head block 2 passes through the slot, the protrusion 4 is fixed to the wedge 5. Thus, when it is necessary to fix the device, the protrusion can be first passed through the workbench, and then the wedge 5 is inserted into the slot under the workbench to fix the device to the workbench. A guide plate 6 is installed at the rear of the cutting head block 2, and the guide plate 6 can be fixed to the rear wall of the cutting head block 2 by screws.

[0025] As Figure 3 , Figure 4 shown, two guide grooves are provided on the guide plate 6, and the two guide grooves can be respectively used to place two punching knives 3. Specifically, after the guide plate 6 is fixed to the rear wall of the cutting head block 2, the two guide grooves and the rear wall of the cutting head block 2 can form two guide holes, and the two guide holes both extend vertically. Thus, the working direction of the punching knife 3 can be restricted through the guide plate 6, and the vertical movement of the punching knife 3 can be maintained to realize the cutting of the stator bar.

[0026] In this embodiment, the pressing assembly includes an upper pressing block 7, a lower pressing block 8, and two left-right clamping blocks 9 located between the upper pressing block 7 and the lower pressing block 8. Among them, a centering rod 10 is vertically provided through the middle of the upper pressing block, and the upper end of the centering rod 10 passes through the left-right middle position at the top of the cutting head block 2. When the stator bar is clamped, it can be divided into two rows on the left and right and located on the left and right sides of the centering rod 10 respectively. Through the centering rod 10, the stator bars on its left and right sides can be respectively aligned with the lower cutting positions of the two cutting knives, thereby improving the processing quality of the stator bar.

[0027] Specifically in this embodiment, as Figure 1 shown, a top pressing bolt 11 is threadedly installed at the top of the cutting head block 2. After the lower end of the top pressing bolt 11 passes through the top of the cutting head block 2, it abuts above the upper pressing block 7. When the top pressing bolt 11 is tightened, the upper pressing block 7 can be squeezed downward, thereby vertically fixing the stator bar. Side pressing bolts 12 are threadedly installed on both side walls of the cutting head block 2. One end of the side pressing bolt 12 horizontally passes through the side wall of the cutting head block 2 and abuts against one side of the left-right clamping blocks 9. When the side pressing bolt 12 is rotated, the two left-right clamping blocks 9 can be squeezed toward the middle, thereby fixing the stator bar left and right.

[0028] In addition, protective strips are provided on the surfaces of the upper pressing block 7, the lower pressing block 8, and the two left-right clamping blocks 9 that are used to contact the stator bar. During the clamping process, the protective strips can effectively prevent scratches or damages on the surface of the stator bar, thereby ensuring the integrity of the stator bar. The punching knife 3 is made of 6Crw2Si, which can ensure that the punching knife 3 is not easily worn during the cutting process, thereby improving the cutting efficiency and cutting quality.

[0029] The usage process of the device is as follows. Place the stator bars in the pressing assembly, which are divided into left and right rows, and are spaced by the centering rod 10 between the two rows of stator bars. The bottom of the stator bar contacts the lower pressing block 8, and the upper part of the stator bar is pressed by the top pressing bolt 11 and the upper pressing block 7 to complete the fixation of the stator bar in the vertical direction. Then, the side pressing bolt 12 and the left and right clamping blocks 9 are used to achieve the fixation of the stator bar in the left and right directions. Finally, select a handheld pneumatic tool, apply a force to the punching tool 3, and the punching tool 3 works along the direction defined by the guiding plate 6 to complete the cutting head processing of the stator bar.

[0030] In the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for describing the present invention rather than requiring the present invention to be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The "connected" and "connected" in the present invention should be understood in a broad sense. For example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in its embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novelties disclosed herein.

Claims

1. A stator bar positioning and cutting device, characterized in that, It includes a lead bracket (1), on which a cutting head block (2) is installed. A cavity that penetrates through from front to back is provided on the cutting head block (2). A pressing component is arranged in the cavity of the cutting head block (2). The pressing component includes an upper pressing block (7), a lower pressing block (8), and two left and right clamping blocks (9) located between the upper pressing block (7) and the lower pressing block (8). A centering rod (10) is arranged through the middle of the upper pressing block (7). The centering rod (10) is vertically arranged and its upper end penetrates through the top of the cutting head block (2). A guide plate (6) is installed at the rear of the cutting head block (2). Two guide grooves are provided on the guide plate (6). The guide grooves cooperate with the rear wall of the cutting head block (2) to form two guide holes. A punching knife (3) is arranged in each of the two guide holes.

2. The stator bar positioning and cutting device according to claim 1, wherein, A top pressing bolt (11) is installed on the top of the cutting head block (2) by threading. The lower end of the top pressing bolt (11) can contact the upper pressing block (7) after passing through the top of the cutting head block (2).

3. The stator bar positioning and cutting device according to claim 2, characterized in that, Side pressing bolts (12) are installed on the two side walls of the cutting head block (2) by threading. One end of the side pressing bolt (12) can contact the left and right clamping blocks (9) after horizontally passing through the side wall of the cutting head block (2).

4. A stator bar positioning and cutting device according to claim 3, characterized in that Protective strips are provided on the surfaces of the upper pressing block (7), the lower pressing block (8), and the two left and right clamping blocks (9) that are used to contact the stator wire bar.

5. A stator bar positioning and cutting device according to claim 1, characterized in that, A protrusion (4) is provided at the lower end of the cutting head block (2). Correspondingly, a notch is provided on the lead bracket (1). The protrusion (4) passes through the notch and is fixed with a wedge (5).

6. The stator bar positioning and cutting device according to claim 1, characterized in that, The centering rod (10) penetrates through the left and right middle positions at the top of the cutting head block (2).

7. A stator bar positioning and cutting device according to claim 1, characterized in that, The punching knife (3) is made of 6Crw2Si.

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