A clamping fixture for machining stepper motor shafts

Abstract

This utility model discloses a clamping fixture for machining stepper motor shaft cores, including a base plate. Two electric push rods are fixedly connected to the top of both sides of the base plate, and a base is fixedly connected to the output end of each electric push rod. In actual use, the base plate provides overall support, and the base adjusts the spacing by moving along the slide rail via a sliding block to accommodate shaft cores of different lengths. A motor drives a bidirectional lead screw to rotate, causing the connecting block and movable clamping plate to move towards each other. The arc-shaped groove fits the shaft core, and the limiting frame, positioning rod, and slider are respectively limited in the slide plate and inner groove to ensure stable clamping. This design solves the problems of poor adaptability and unstable clamping in traditional fixtures, and changes the situation of cumbersome adjustments and easy deviation during shaft core machining. Through adjustable spacing and multi-directional limiting structure, it achieves rapid and accurate fixing of shaft cores of different specifications, improving processing efficiency and stability, and adapting to the needs of stepper motor shaft core machining scenarios.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft processing technology, specifically a clamping fixture for processing stepper motor shafts. Background Technology

[0002] A clamping fixture for machining stepper motor shafts is a tool used to fix the shaft for easier processing. It consists of a base, adjustable jaws, and positioning blocks. The jaws can be adjusted in spacing according to the shaft size, and the positioning blocks ensure accurate axial and radial positioning of the shaft. The shaft is clamped manually or pneumatically to prevent displacement during machining. Suitable for turning, grinding, and other processes, it ensures shaft machining accuracy, reduces deviations, improves machining efficiency and quality, and is adaptable to the machining needs of stepper motor shafts of different specifications.

[0003] A search revealed that Chinese patent CN222857679U discloses a clamping fixture for machining stepper motor shafts. The patent describes a fixture consisting of a horizontal platform, a first side plate, a second side plate, a horizontal push rod, a movable plate, a guide rod, a fixed clamping head, and a movable clamping head. Both the fixed and movable clamping heads are equipped with a block, a semi-circular clamping cover, a semi-circular toothed ring, and a semi-circular anti-slip pad. The complete circular toothed ring formed by the mating of two semi-circular toothed rings can move within the complete circular clamping cover formed by the mating of two semi-circular clamping covers. The movable clamping head also includes a drive gear for rotating the complete circular toothed ring. This method enables batch clamping of stepper motor shafts and allows for rotation of the clamped shafts, meeting the requirements for end-grinding.

[0004] While this solution can achieve batch clamping and rotation functions, it is insufficient in terms of clamping accuracy and operational flexibility. The compatibility of the circular toothed ring structure of the fixed clamping head and the moving clamping head is limited. For shaft cores of different diameters, it is necessary to replace the toothed ring with the corresponding specification. Frequent disassembly and assembly leads to cumbersome procedures and affects processing efficiency. In order to solve this technical problem, this utility model proposes a clamping fixture for stepper motor shaft core processing. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] While this solution can achieve batch clamping and rotation functions, it is insufficient in terms of clamping accuracy and operational flexibility. The compatibility of the circular toothed ring structure of the fixed clamping head and the moving clamping head is limited. For shaft cores of different diameters, it is necessary to replace the toothed ring with the corresponding specification. Frequent disassembly and assembly leads to cumbersome procedures and affects processing efficiency. In order to solve this technical problem, this utility model proposes a clamping fixture for stepper motor shaft core processing.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a clamping fixture for machining stepper motor shaft cores, comprising a base plate, electric push rods two of which are fixedly connected to the top of both sides of the base plate, a base fixedly connected to the output end of each electric push rod two of which is fixedly connected to the base, a support plate fixedly connected to the top of the base, sliding groove plates fixedly connected to both sides below the support plate, movable clamping plates provided on both sides of the support plate, and arc-shaped grooves opened on both sides of the middle of the upper part of the support plate, with the movable clamping plates corresponding to the arc-shaped grooves.

[0009] Preferably, a second motor is fixedly connected to the outer wall of one side of the support plate, a small gear is fixedly connected to the output shaft of the second motor, and connecting rods are rotatably connected to the inside of both sides of the support plate, with an anti-slip roller fixedly connected to the other end of each connecting rod.

[0010] Preferably, a motor is fixedly connected to the outer wall of one side of the slide plate, and a bidirectional lead screw is fixedly connected to the output end of the motor. Limiting frames are fixedly connected to both sides below the movable clamping plate, and connecting blocks are fixedly connected to the outer walls of the limiting frames, with the connecting blocks threaded to both ends of the bidirectional lead screw.

[0011] Preferably, the limiting frame is slidably connected inside the slide plate, and a positioning rod is fixedly connected to the outer wall of the slide plate on the other side. The other side of the movable clamp is slidably connected to the outer wall of the positioning rod through a connecting block.

[0012] Preferably, a slider is fixedly connected to the bottom of the movable clamping plate, an inner groove is opened on both sides of the top of the support plate, the slider is slidably connected in the inner groove, a sliding block is fixedly connected to both sides of the bottom of the base, a slide rail is fixedly connected to the top of the base plate, and the sliding block is slidably connected in the slide rail.

[0013] Preferably, a large gear is fixedly connected to the outer wall of each connecting rod, and the large gear meshes with the small gear.

[0014] (III) Beneficial Effects

[0015] This utility model provides a clamping fixture for machining stepper motor shaft cores. It has the following advantages:

[0016] (1) The base plate provides support for the whole. The base moves along the slide rail to adjust the spacing through the sliding block to adapt to shaft cores of different lengths. The motor drives the bidirectional lead screw to rotate, which drives the connecting block and the movable clamping plate to move towards each other. The arc groove fits the shaft core. The limit frame, positioning rod and slider are respectively limited in the slide plate and inner groove to ensure stable clamping. This combination solves the problems of poor adaptability and unstable clamping of traditional fixtures, and changes the situation of cumbersome adjustment and easy deviation during shaft core processing. Through the adjustable spacing and multi-directional limit structure, the shaft cores of different specifications can be quickly and accurately fixed, improving processing efficiency and stability, and adapting to the needs of stepper motor shaft core processing scenarios.

[0017] (2) The motor drives the small gear to rotate. The small gear meshes with the large gears on both sides, driving the large gears to rotate synchronously. The large gear drives the anti-slip roller to rotate through the connecting rod. The anti-slip roller contacts the shaft core and generates friction to drive its rotation. This combination solves the problem of the traditional shaft core processing requiring manual flipping and cumbersome face-changing operations. It changes the situation of low processing efficiency and easy positioning deviation caused by flipping. Through gear linkage, the shaft core can be automatically rotated and face-changing, ensuring processing continuity and accuracy, improving the efficiency and quality of multi-face processing of stepper motor shaft cores, and adapting to the needs of automated processing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the external structure of the movable clamping plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the external structure of the support plate of this utility model.

[0022] In the diagram: 1. Base plate; 2. Base; 3. Support plate; 4. Slide plate; 5. Motor 1; 6. Double-acting lead screw; 7. Limiting frame; 8. Connecting block; 9. Movable clamping plate; 10. Arc groove; 11. Inner groove; 12. Positioning rod; 13. Slider; 14. Motor 2; 15. Pinion gear; 16. Connecting rod; 17. Anti-slip roller; 18. Large gear; 20. Electric push rod 2; 21. Slide rail; 22. Sliding block. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figure 1-4 This utility model provides a technical solution:

[0025] Example 1: A clamping fixture for machining stepper motor shafts includes a base plate 1. Electric push rods 20 are fixedly connected to the top of both sides of the base plate 1. A base 2 is fixedly connected to the output end of each electric push rod 20. A support plate 3 is fixedly connected to the top of the base 2. Slide plates 4 are fixedly connected to both sides below the support plate 3. Movable clamping plates 9 are provided on both sides of the support plate 3. Arc-shaped grooves 10 are formed on both sides of the upper middle of the support plate 3. The movable clamping plates 9 correspond to the arc-shaped grooves 10. A motor 5 is fixedly connected to the outer wall of one slide plate 4. A bidirectional lead screw 6 is fixedly connected to the output end of the motor 5. The movable clamping plates 9 are fixedly connected to the outer sides below the slide plate 4. The limit frame 7 has connecting blocks 8 fixedly connected to the outer walls of the limit frame 7, and the connecting blocks 8 are threaded to both ends of the bidirectional lead screw 6. The limit frame 7 is slidably connected to the slide plate 4. The other side of the slide plate 4 is fixedly connected to the outer wall of the slide plate 4. The other side of the movable clamping plate 9 is slidably connected to the outer wall of the positioning rod 12 through the connecting blocks 8. The bottom of the movable clamping plate 9 is fixedly connected to the slider 13. The top of the support plate 3 has inner grooves 11 on both sides, and the slider 13 is slidably connected to the inner grooves 11. The bottom of the base 2 has sliding blocks 22 fixedly connected to both sides. The top of the base plate 1 is fixedly connected to the slide rail 21, and the sliding blocks 22 are slidably connected to the slide rail 21.

[0026] In use, first adjust the clamp spacing according to the length of the stepper motor shaft, start the electric push rod 20, and push the base 2 to move towards each other along the slide rail 21 via the sliding block 22. After moving to the appropriate position, place the stepper motor shaft between the movable clamping plate 9 and the arc groove 10. At this time, start the motor 5, which drives the bidirectional lead screw 6 to rotate, thereby driving the movable clamping plate 9 on the connecting block 8 to move towards each other. During the movement of the movable clamping plate 9, it is limited by the limit frame 7 in the slide plate 4, the connecting block 8 on the positioning rod 12, and the slider 13 in the inner groove 11. After the movable clamping plates 9 on both sides move, they clamp and fix the stepper motor shaft, and one side of the shaft abuts against the anti-slip roller 17, which effectively improves the working efficiency.

[0027] Example 2: The difference between this example and Example 1 is that a second motor 14 is fixedly connected to one side of the outer wall of the support plate 3, a small gear 15 is fixedly connected to the output shaft of the second motor 14, a connecting rod 16 is rotatably connected to both sides of the support plate 3, an anti-slip roller 17 is fixedly connected to the other end of each connecting rod 16, and a large gear 18 is fixedly connected to the outer wall of each connecting rod 16, with the large gear 18 meshing with the small gear 15.

[0028] After processing on one side is completed, motor 14 is started, which drives the small gear 15 to rotate. When the small gear rotates, it drives the large gears 18 on both sides to rotate synchronously. The rotation of the large gears drives the anti-slip roller 17 to rotate through the connecting rod 16, which in turn drives the clamped stepper motor shaft to rotate, so as to process the other sides, effectively improving work efficiency.

[0029] Working principle: In use, first adjust the distance of the clamp according to the length of the stepper motor shaft. Start the electric push rod 20 to push the base 2 to move towards each other. The base 2 moves along the slide rail 21 via the sliding block 22. After moving to the appropriate position, place the stepper motor shaft between the movable clamping plate 9 and the arc groove 10. At this time, start the motor 5 to drive the bidirectional lead screw 6 to rotate, thereby driving the movable clamping plate 9 on the connecting block 8 to move towards each other. At the same time, the movable clamping plate 9 is limited within the slide groove plate 4 by the limit frame 7, the connecting block 8 and the slider 13. The movement of the movable clamping plates 9 on both sides of the positioning rod 12 and the inner groove 11 clamps and fixes the stepper motor shaft. One side of the stepper motor shaft abuts against the anti-slip roller 17, thereby improving work efficiency. After processing on one side, the starter motor 14 drives the pinion 15 to rotate. When the pinion 15 rotates, it drives the large gears 18 on both sides to rotate. When the large gears 18 rotate, they drive the anti-slip roller 17 on the connecting rod 16 to rotate, thereby driving the stepper motor shaft to rotate, which facilitates processing on other sides and improves work efficiency.

[0030] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail (motor model: 39BYG001; electric actuator model: XTL100-500-24).

[0031] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A clamping tool for machining a shaft core of a stepper motor, characterized by: Includes a base plate (1), on both sides of the top of the base plate (1) are fixedly connected to electric push rods (20), each of the output ends of the electric push rods (20) is fixedly connected to a base (2), the top of the base (2) is fixedly connected to a support plate (3), the lower sides of the support plate (3) are fixedly connected to sliding groove plates (4), the support plate (3) is provided with movable clamping plates (9) on both sides, and the upper middle sides of the support plate (3) are provided with arc grooves (10), the movable clamping plates (9) correspond to the arc grooves (10).

2. The clamping tool for machining the shaft core of a stepper motor according to claim 1, characterized in that: A second motor (14) is fixedly connected to the outer wall of one side of the support plate (3). A small gear (15) is fixedly connected to the output shaft of the second motor (14). A connecting rod (16) is rotatably connected to the inside of both sides of the support plate (3). An anti-slip roller (17) is fixedly connected to the other end of each connecting rod (16).

3. The chucking tool for machining the shaft core of a stepper motor according to claim 2, characterized in that: A motor (5) is fixedly connected to the outer wall of the slide plate (4) on one side. A two-way lead screw (6) is fixedly connected to the output end of the motor (5). Limiting frames (7) are fixedly connected to both sides below the movable clamping plate (9). Connecting blocks (8) are fixedly connected to the outer walls of the limiting frames (7), and the connecting blocks (8) are threaded to both ends of the two-way lead screw (6).

4. The chucking tool for machining the shaft core of a stepper motor according to claim 3, characterized in that: The limiting frame (7) is slidably connected inside the slide plate (4), and a positioning rod (12) is fixedly connected to the outer wall of the slide plate (4) on the other side. The other side of the movable clamp (9) is slidably connected to the outer wall of the positioning rod (12) through the connecting block (8).

5. A clamping fixture for machining stepper motor shaft cores according to claim 4, characterized in that: The movable clamp (9) is fixedly connected to a slider (13) at the bottom. The support plate (3) has an inner groove (11) on both sides of the top. The slider (13) is slidably connected in the inner groove (11). The base (2) has a sliding block (22) fixedly connected on both sides of the bottom. The base plate (1) has a slide rail (21) fixedly connected to the top. The sliding block (22) is slidably connected in the slide rail (21).

6. The chucking tool for machining the shaft core of a stepper motor according to claim 5, wherein: Each of the connecting rods (16) has a large gear (18) fixedly connected to its outer side wall, and the large gear (18) meshes with the small gear (15).

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