Motor shaft keyway milling device

Abstract

The utility model relates to a kind of motor shaft milling keyway devices, including milling machine main body;Installation platform and milling device main body are installed on the milling machine main body, clamping assembly is provided on the installation platform;The clamping assembly includes two installation frames, two The installation frame is symmetrically set on the installation platform, load-bearing seat is installed on the upper end surface of two installation frames, at least two recesses are opened in the upper end surface of the load-bearing seat, so that the motor shaft to be processed is straddled in the upper of two load-bearing seats, and embedded in the recess opposite when. The motor shaft milling keyway device, too many recess load-bearing seats and synchronous positioning assembly, can clamp multiple motor shafts at a time, without disassembling in the middle during milling, the effective processing time ratio significantly improves;Compared with traditional single-shaft device, batch processing cycle is greatly shortened, reduce the time waste caused by frequent disassembly of enterprise, reduce manpower monitoring cost simultaneously, adapt to the scale demand of motor production.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft machining technology, specifically a device for milling keyways on motor shafts. Background Technology

[0002] As a core component of the motor transmission system, the motor shaft requires keyways to be machined on its surface to achieve precise fit with couplings, gears, and other components. The machining accuracy and efficiency of the keyways directly affect the overall assembly quality and production progress of the motor. Currently, most devices on the market for milling keyways on motor shafts adopt a single-shaft fixed structure during the machining process. This means that only one motor shaft can be positioned and clamped at a time. After the keyway of that motor shaft is machined, the machined workpiece must be disassembled and the next motor shaft to be machined must be re-clamped before the milling operation can continue. This machining mode can meet basic requirements when machining a small number of motor shafts, but it has obvious limitations in batch processing scenarios. In the manufacturing process of electric motors, keyway machining is often required on a large number of motor shafts. However, existing single-shaft fixed keyway milling devices require separate disassembly, clamping, and alignment of the machined parts for each machining operation. This results in a significant amount of time being wasted on disassembly and assembly, leading to a low percentage of actual effective milling time and a substantial decrease in overall processing efficiency. When using existing equipment for batch processing, the frequent and repetitive disassembly and assembly processes not only extend the production cycle but also require more manpower to monitor the clamping process, increasing the company's labor and time costs. Furthermore, repeated disassembly and assembly processes can negatively impact the stability of machining accuracy. Each time the motor shaft is clamped, the positioning reference must be manually adjusted to ensure the precise relative position of the motor shaft and the milling cutter. However, individual differences in manual operation can easily lead to deviations in parameters such as keyway position, depth, and parallelism between different batches or even within the same batch of motor shafts, making it difficult to guarantee the consistency of batch-processed parts. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a keyway milling device for motor shafts, solving the problems mentioned in the background art. To achieve the above objectives, this utility model provides the following technical solution: A keyway milling device for motor shafts includes a milling machine body; A mounting table and a milling device body are mounted on the milling machine body, and a clamping assembly is provided on the mounting table. The clamping assembly includes two mounting frames, which are symmetrically arranged on the mounting platform. Each mounting frame has a bearing seat installed on its upper surface. The upper surface of each bearing seat has at least two grooves, so that the motor shaft to be processed straddles the two bearing seats and is embedded in the opposite grooves. A cylinder is installed on the inner bottom wall of the mounting frame. The output end of the cylinder passes through the mounting frame and the support seat. A pressure plate is connected to the output end of the cylinder. Corresponding to the groove, two pressure blocks are installed on the lower surface of the pressure plate and above the two grooves respectively.

[0004] Furthermore, one of the bearing seats has four grooves, and one of the mounting frames has two cylinders inside.

[0005] Furthermore, the groove has a V-shaped cross-section on the ZX surface.

[0006] Furthermore, the side of the pressing block facing the groove is recessed upward to form an arc-shaped concave portion, in order to increase the contact area with the motor shaft.

[0007] Furthermore, the two mounting frames are provided with positioning components for clamping both ends of the motor shaft to be processed. The positioning components are configured to enable the two ends of multiple clamped motor shafts to be located on the same ZX surface. The positioning assembly includes a housing, a dual-axis motor, a screw, a transmission pair, a connecting rod, a vertical plate, and a horizontal plate; The housing is fixed to the bottom wall of the mounting frame; the dual-axis motor is installed inside the housing, and its two output ends are respectively connected to a screw. The other end of each screw is rotatably connected to the corresponding inner wall of the housing through a bearing. Each screw is threadedly connected to a transmission pair, and each transmission pair is connected to a vertical plate on its front and rear sides by a connecting rod extending along the Y-axis. One end of the connecting rod is connected to the transmission pair, and the other end passes through the housing and is connected to the vertical plate. The top of the vertical plate is provided with a horizontal plate.

[0008] Furthermore, the horizontal plates on the left and right sides are respectively attached to the left and right ends of the motor shaft.

[0009] Furthermore, a cover plate is detachably installed on the upper end face of the housing, and the upper surface of the cover plate is inclined.

[0010] Furthermore, the threads of the two screws are in opposite directions.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects: This motor shaft keyway milling device, with its multi-groove bearing seat and synchronous positioning components, can clamp multiple motor shafts at once, eliminating the need for disassembly and assembly during the milling process, thus significantly increasing the effective processing time. Compared to traditional single-shaft devices, it greatly shortens the batch processing cycle, reducing time wasted by frequent disassembly and assembly, while also lowering labor monitoring costs, thus meeting the large-scale needs of motor production. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a schematic diagram of the clamping assembly structure of this utility model; Figure 4 This is a schematic diagram of the positioning component structure of this utility model.

[0013] In the diagram: 1. Milling machine body; 2. Mounting table; 3. Milling device body; 4. Clamping assembly; 401. Mounting frame; 402. Bearing seat; 403. Cylinder; 404. Lower pressure plate; 405. Lower pressure block; 5. Positioning assembly; 501. Housing; 502. Dual-axis motor; 503. Screw; 504. Transmission pair; 505. Connecting rod; 506. Vertical plate; 507. Horizontal plate. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-4 This embodiment of a motor shaft keyway milling device, through the coordinated action of a multi-groove bearing seat and a synchronous positioning component, achieves simultaneous fixing and precise milling of multiple motor shafts, meeting the keyway processing requirements for batch motor shafts in motor production. Specifically, its structure mainly consists of a milling machine body 1, a mounting table 2, a milling device body 3, a clamping assembly 4, and a positioning assembly 5. The components work together to achieve the functions of motor shaft clamping, positioning, and keyway milling.

[0016] The milling machine body 1 is equipped with a mounting table 2 and a milling device body 3, which are used to support the clamping assembly 4 and the motor shaft to be processed. The milling device body 3 is located above the mounting table 2 and has a built-in milling cutter and drive mechanism to perform keyway milling on the motor shaft according to a preset program.

[0017] In detail, the clamping assembly 4 is set on the mounting table 2 for batch fixing of motor shafts to be processed. It includes two symmetrical mounting frames 401. The mounting frames 401 are metal frames that are fixed to the upper surface of the mounting table 2 to provide a stable mounting base for the bearing seat 402 and the cylinder 403. The upper end face of both mounting frames 401 is fixed with the bearing seat 402. One of the bearing seats 402 has four grooves, and the cross-sectional shape of the grooves on the ZX plane is V-shaped, which can accommodate cylindrical motor shafts of different diameters. The motor shaft is automatically centered by the inclined surfaces on both sides to ensure that the axis of the motor shaft is in the center.

[0018] Furthermore, corresponding to the groove of the bearing seat 402, two cylinders 403 are installed inside one of the mounting frames 401. The output end of the cylinder 403 passes through the mounting frame 401 and the bearing seat 402, and the top end is connected to the lower pressure plate 404. Two lower pressure blocks 405 are fixed on the lower surface of the lower pressure plate 404. The side of the lower pressure block 405 facing the groove is concave upward to form an arc-shaped concave part. The arc-shaped structure can increase the contact area with the motor shaft and increase the stability of the motor shaft to be processed during milling.

[0019] More specifically, the positioning component 5 is set on the two mounting frames 401 to synchronously position the two ends of multiple motor shafts to ensure that they are located on the same ZX plane. It includes a housing 501, a dual-axis motor 502, a screw 503, a transmission pair 504, a connecting rod 505, a vertical plate 506, and a horizontal plate 507.

[0020] Specifically, the housing 501 is fixed to the inner bottom wall of the mounting frame 401, and a dual-axis motor 502 is installed inside. The two output ends of the dual-axis motor 502 are respectively connected to a screw 503. The two screws 503 have opposite thread directions, and the other end is rotatably connected to the inner side wall of the housing 501 through a bearing. A transmission pair 504 is threaded onto each screw 503. The front and rear sides of the transmission pair 504 are connected to the vertical plate 506 through the connecting rod 505 extending along the Y-axis. The connecting rod 505 passes through the housing 501. A horizontal plate 507 is fixed to the top of the vertical plate 506. The horizontal plates 507 on the left and right sides can fit against the two ends of the motor shaft. An inclined cover plate can be detachably installed on the upper end face of the housing 501 to facilitate the cleaning of internal impurities and at the same time prevent milling debris from entering the positioning component 5 and affecting the transmission.

[0021] In practical applications, the usage process of this device is as follows: Multiple motor shafts to be processed are straddled above two bearing seats 402, with each motor shaft embedded in a corresponding V-shaped groove. The V-shaped groove automatically aligns the motor shafts via an inclined surface, ensuring initial positioning. The dual-axis motor 502 of the positioning component 5 is activated, driving two screws 503 with opposite thread directions to rotate. The screws 503 drive the transmission pair 504 to move towards each other along the screws 503. The transmission pair 504 drives the vertical plate 506 and the horizontal plate 507 to move synchronously via the connecting rod 505 until the horizontal plates 507 on both sides respectively fit the two ends of all motor shafts, so that the two ends of multiple motor shafts are located on the same ZX plane, completing precise positioning. Then, the cylinder 403 in the mounting frame 401 is activated, driving the lower pressure plate 404 to move downward. The lower pressure plate 404 drives the lower pressure block 405 to press the motor shafts together. The arc-shaped concave part increases the contact area, ensuring stable fixation of the motor shafts and preventing displacement during milling.

[0022] Start the milling machine body 1 and the milling device body 3. According to the preset parameters of the keyway of the motor shaft, control the milling cutter of the milling device body 3 to move to the keyway machining position of the first motor shaft. The milling cutter rotates at high speed to mill the motor shaft. After completing the keyway machining of one motor shaft, the milling device body 3 moves along the preset path to the next motor shaft and repeats the milling action until all the clamped motor shafts have completed the keyway machining. There is no need to disassemble the machined motor shafts in the middle of the process.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for milling keyways on a motor shaft, characterized in that: Including the milling machine body (1); A mounting table (2) and a milling device body (3) are mounted on the milling machine body (1), and a clamping assembly (4) is provided on the mounting table (2). The clamping assembly (4) includes two mounting frames (401), which are symmetrically arranged on the mounting platform (2). Each mounting frame (401) has a bearing seat (402) installed on its upper surface. The upper surface of the bearing seat (402) has at least two grooves, so that the motor shaft to be processed spans above the two bearing seats (402) and is embedded in the opposite grooves. A cylinder (403) is installed on the inner bottom wall of the mounting frame (401). The output end of the cylinder (403) passes through the mounting frame (401) and the bearing seat (402). A pressure plate (404) is connected to the output end of the cylinder (403). Corresponding to the groove, two pressure blocks (405) are installed on the lower surface of the pressure plate (404) and above the two grooves respectively.

2. The keyway milling device for a motor shaft according to claim 1, characterized in that: One of the bearing seats (402) has four grooves, and one of the mounting frames (401) has two cylinders inside.

3. The keyway milling device for a motor shaft according to claim 1, characterized in that: The groove has a V-shaped cross-section on the ZX surface.

4. The keyway milling device for a motor shaft according to claim 1, characterized in that: The lower pressure block (405) is recessed upward on the side facing the groove to form an arc-shaped concave portion, in order to increase the contact area with the motor shaft.

5. The keyway milling device for a motor shaft according to claim 1, characterized in that: The two mounting frames (401) are provided with positioning components (5) for clamping the two ends of the motor shaft to be processed. The positioning components (5) are configured to enable the two ends of the multiple clamped motor shafts to be located on the same ZX surface. The positioning component (5) includes a housing (501), a dual-axis motor (502), a screw (503), a transmission pair (504), a connecting rod (505), a vertical plate (506), and a horizontal plate (507). The housing (501) is fixed to the bottom wall of the mounting frame (401); the dual-axis motor (502) is installed inside the housing (501), and its two output ends are respectively connected to a screw (503). The other end of each screw (503) is rotatably connected to the corresponding inner wall of the housing (501) through a bearing. Each screw (503) is threadedly connected to a transmission pair (504). Each transmission pair (504) is connected to a vertical plate (506) on its front and rear sides by a connecting rod (505) extending along the Y-axis. One end of the connecting rod (505) is connected to the transmission pair (504), and the other end passes through the housing (501) and is connected to the vertical plate (506). The top of the vertical plate (506) is provided with a horizontal plate (507).

6. The keyway milling device for a motor shaft according to claim 5, characterized in that: The horizontal plates (507) on the left and right sides are respectively attached to the left and right ends of the motor shaft.

7. The keyway milling device for a motor shaft according to claim 5, characterized in that: A cover plate is detachably installed on the upper end face of the housing (501), and the upper surface of the cover plate is inclined.

8. The keyway milling device for a motor shaft according to claim 5, characterized in that: The threads of the two screws (503) are opposite.

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