Edge trimmer for automobile steering wheel
By combining a cylinder, clamping wheel, and spring, the problem of cumbersome clamping operations in existing technologies is solved, achieving efficient and stable steering wheel trimming.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG FANGXIANG IND CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-19
AI Technical Summary
The existing car steering wheel trimming machine uses a clamping method involving nuts, screws, and other components, which is cumbersome and affects processing efficiency.
It adopts a combination structure of cylinder, clamping wheel, spring and drive motor. The cylinder drives the push block and transmission rod to realize the parallel movement of the moving block. The clamping wheel and spring work together to stabilize the clamping and avoid the operation of nut and screw. The drive motor drives the clamping wheel to rotate for processing.
It simplifies the clamping operation process, improves processing efficiency, ensures stable clamping and processing of steering wheels of different shapes, and avoids the effects of movement imbalance.
Smart Images

Figure CN224254918U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive steering wheel technology, specifically, it relates to an edge trimming machine for automotive steering wheels. Background Technology
[0002] A car steering wheel is a wheel-shaped device used to control the direction of travel in a car. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque and then transmit it to the steering shaft. After the car steering wheel is cast, its outer surface will have some burrs and flash, which will affect the quality, feel and appearance of the steering wheel. Therefore, it needs to be repaired with a trimming machine.
[0003] A document with publication number (CN218256249U) discloses an automotive steering wheel trimming device, including a base and a steering wheel. A motor is fixedly mounted on the base, and a fastening component is provided on the output shaft of the motor for locking the steering wheel. A fixed seat is fixedly mounted on the base, and a slide rod that is driven to slide horizontally is provided on the fixed seat. An elastic component is provided at the end of the slide rod, and a blade holder is mounted on the elastic component. The blade holder is pushed by the elastic component so that a detachably connected blade is always in contact with the side wall of the steering wheel. The automotive steering wheel trimming device provided by the above device is not only suitable for steering wheels with different radii, but also for steering wheels with flat bottoms or tops, or oval shapes. The spring included in the elastic component is replaceable so that its elastic force can be adapted when trimming different models of steering wheels. The blade is also detachable and replaceable.
[0004] The aforementioned device processes the steering wheel by flexibly setting the blade. However, the clamping method of the device uses components such as nuts and screws to clamp and fix the steering wheel, which makes the clamping operation process in the processing of the steering wheel too cumbersome and affects the processing efficiency.
[0005] In view of this, this utility model is proposed. Utility Model Content
[0006] To solve the technical problem of steering wheel clamping, the basic concept of the technical solution adopted by this utility model is as follows:
[0007] A trimming machine for automotive steering wheels includes a processing assembly for processing the steering wheel. The processing assembly includes an operating table, movable blocks, a drive motor, clamping wheels, and cylinders. The movable blocks are symmetrically arranged on the operating table. The cylinders are fixedly connected to the bottom of the operating table. Each movable block is drivenly connected to the output end of the cylinder. The clamping wheels are arranged at the ends of the corresponding movable blocks, and each clamping wheel is elastically connected to the movable block. A trimming device is fixedly connected to one of the movable blocks.
[0008] In a preferred embodiment of this utility model, a mounting bracket is fixedly connected to the bottom of the operating table, and a push block is slidably connected to the mounting bracket. The push block is fixedly connected to the output end of the cylinder.
[0009] In a preferred embodiment of this utility model, the corners of the push block are rotatably connected to transmission rods, and each transmission rod is fixedly connected to a column at its edge.
[0010] In a preferred embodiment of this utility model, the operating table is provided with a discharge trough and multiple through holes, and the column on each transmission rod is connected to the corresponding through hole, and the column is rotatably connected to the bottom of the corresponding movable block.
[0011] In a preferred embodiment of this utility model, each of the movable blocks is slidably connected to a slide rod at its end, the slide rod is fixedly connected to a mounting frame, and the clamping wheel is rotatably connected to the mounting frame.
[0012] In a preferred embodiment of this utility model, the drive motor is fixedly connected to one of the mounting frames, and the output end of the drive motor is fixedly connected to one of the clamping wheels.
[0013] In a preferred embodiment of this utility model, each of the slide bars is fitted with a spring, and the end of each spring is fixedly connected to the corresponding movable block and mounting frame.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] 1. This type of automotive steering wheel trimming machine, through the mutual cooperation of internal components of the processing assembly, eliminates the need for clamping operations using nuts and screws, thus reducing the impact on processing efficiency.
[0016] 2. In this type of automotive steering wheel trimming machine, the column slides in the through hole. Due to the four corners between the through hole and the column, the movable block moves parallel to the column during its movement, thus avoiding imbalance at both ends of the movable block during movement, which would affect the clamping of the steering wheel.
[0017] 3. This type of automotive steering wheel trimming machine, through the cooperation of clamping wheels, springs and drive motor, clamps steering wheels of different shapes. During the rotation of the steering wheel, different edges of the steering wheel are always in contact with the clamping wheels, thus stably clamping the steering wheel and rotating it for processing.
[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0019] In the attached diagram:
[0020] Figure 1This is a three-dimensional schematic diagram of the present invention;
[0021] Figure 2 This is a schematic diagram of the structure on the operating table of this utility model;
[0022] Figure 3 This is a bottom view of the present invention;
[0023] Figure 4 This is a schematic diagram of the structure between the cylinder and the movable block of this utility model;
[0024] Figure 5 This is a schematic diagram of the structure between the movable blocks of this utility model.
[0025] In the diagram: 1. Operating platform; 11. Unloading chute; 12. Through hole; 2. Trimming device; 3. Movable block; 31. Clamping wheel; 32. Mounting frame; 33. Slide rod; 34. Spring; 35. Drive motor; 4. Cylinder; 41. Transmission rod; 42. Push block; 43. Mounting bracket. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0027] Please see Figure 1-5 A steering wheel trimming machine includes a processing assembly for processing the steering wheel. The processing assembly includes an operating table 1, movable blocks 3, a drive motor 35, clamping wheels 31, and a cylinder 4. The movable blocks 3 are symmetrically arranged on the operating table 1. The cylinder 4 is fixedly connected to the bottom of the operating table 1. Each movable block 3 is drivenly connected to the output end of the cylinder 4. The clamping wheels 31 are arranged at the ends of the corresponding movable blocks 3, and each clamping wheel 31 is elastically connected to the movable block 3. A trimming device 2 is fixedly connected to one of the movable blocks 3. Through the mutual cooperation of the internal components of the processing assembly, the operation process of clamping with nuts and screws is eliminated, reducing the impact on processing efficiency. The trimming device 2 is used to trim the steering wheel.
[0028] It is worth noting that the trimming device 2 includes a sliding rod mounted on a fixed base, which is driven to slide horizontally. An elastic component is located at the end of the sliding rod, and a blade holder is mounted on the elastic component. The blade holder is pushed by the elastic component so that a detachably connected blade is always in contact with the side wall of the steering wheel. The aforementioned steering wheel trimming device is suitable not only for steering wheels with different radii but also for steering wheels with flat bottoms or tops, or oval shapes. Furthermore, the spring included in the elastic component is replaceable, allowing its elasticity to adapt to trimming different steering wheel models. The blade is also detachable and replaceable. The trimming device 2 has already been disclosed in the prior art of a steering wheel trimming device CN218256249U, and will not be elaborated upon here.
[0029] The bottom of the operating platform 1 is fixedly connected to a mounting bracket 43, and a push block 42 is slidably connected to the mounting bracket 43. The push block 42 is fixedly connected to the output end of the cylinder 4. A transmission rod 41 is rotatably connected to the corner of the push block 42, and a column is fixedly connected to the edge of each transmission rod 41. The operating platform 1 has a discharge groove 11 and multiple through holes 12. The column on each transmission rod 41 is connected to the through hole 12, and the column is rotatably connected to the bottom of the corresponding movable block 3. When the steering wheel is placed on the operating platform 1, the cylinder 4 drives the push block 42 to move through the output end. During the movement, the corresponding end of the transmission rod 41 is driven to move, and the other end of the transmission rod 41 is driven to move. The column on the transmission rod 41 is driven to slide in the through hole 12. The column drives the corresponding movable block 3 to move. During the movement, the movable block 3 approaches the steering wheel and the structure on the movable block 3 makes close contact with the edge of the steering wheel, quickly clamping the steering wheel. When it is necessary to release the clamping, the cylinder 4 drives the push block 42, transmission rod 41 and other components through the output end to separate the movable block 3 from the edge of the steering wheel. This eliminates the need for clamping with nuts and screws, reducing the impact on processing efficiency.
[0030] As the column slides through the through hole 12, the four corners between the through hole 12 and the column enable the movable block 3 to move parallel during the column's movement. This prevents the movable block 3 from becoming unbalanced at both ends during movement, thus avoiding any impact on the gripping of the steering wheel.
[0031] Each movable block 3 has a sliding rod 33 slidably connected to its end. A mounting frame 32 is fixedly connected to the sliding rod 33. A clamping wheel 31 is rotatably connected to the mounting frame 32. A drive motor 35 is fixedly connected to one of the mounting frames 32, and the output end of the drive motor 35 is fixedly connected to one of the clamping wheels 31. A spring 34 is fitted onto each sliding rod 33, and the end of each spring 34 is fixedly connected to the corresponding movable block 3 and mounting frame 32. When the edge of the steering wheel contacts the clamping wheel 31, the clamping wheel 31 drives the mounting frame 32 to move, compressing the mounting frame 32. Spring 34 deforms and applies the deformation force to mounting frame 32 and clamping wheel 31. The output end of drive motor 35 drives one of the clamping wheels 31 to rotate. As the clamping wheel 31 rotates, it drives the steering wheel between the clamping wheels 31 to rotate. During the rotation of the steering wheel, the edge of the steering wheel is processed. With the cooperation of clamping wheel 31, spring 34 and drive motor 35, steering wheels of different shapes are clamped. During the rotation of the steering wheel, different edges of the steering wheel are always in contact with the clamping wheel 31, so as to stably clamp the steering wheel and rotate the steering wheel.
[0032] Working principle: The steering wheel is placed on the operating table 1. The cylinder 4 drives the push block 42 to move through its output end. As the push block 42 moves, it drives the end of the corresponding transmission rod 41, causing the other end of the transmission rod 41 to move as well. The column on the transmission rod 41 is then moved to slide within the through hole 12. The column drives the corresponding movable block 3 to move. As the movable block 3 moves, it approaches the steering wheel and its structure makes tight contact with the edge of the steering wheel, quickly clamping it. When it is necessary to release the clamp, the cylinder 4, through its output end, drives the push block 42, transmission rod 41, and other components to separate the movable block 3 from the edge of the steering wheel. This eliminates the need for clamping with nuts and screws, reducing the impact on processing efficiency. During the sliding of the column within the through hole 12, the four corners between the through hole 12 and the column contribute to the smooth movement of the column. During operation, the movable block 3 moves parallel to each other, preventing imbalance at both ends of the movable block 3 from affecting the clamping of the steering wheel. When the edge of the steering wheel contacts the clamping wheel 31, the clamping wheel 31 drives the mounting frame 32 to move. The mounting frame 32 compresses the spring 34, causing the spring 34 to deform and apply the deformation force to the mounting frame 32 and the clamping wheel 31. The output end of the drive motor 35 drives one of the clamping wheels 31 to rotate. As the clamping wheel 31 rotates, it drives the steering wheel between the clamping wheels 31 to rotate. During the rotation of the steering wheel, the edge of the steering wheel is processed. With the cooperation of the clamping wheel 31, the spring 34 and the drive motor 35, steering wheels of different shapes are clamped. During the rotation of the steering wheel, different edges of the steering wheel are always in contact with the clamping wheel 31, stably clamping the steering wheel and processing the steering wheel rotation.
[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A trimming machine for automobile steering wheels, characterized in that, include: The processing component is used to process the steering wheel. The processing component includes a control panel (1), movable blocks (3), drive motor (35), clamping wheels (31) and cylinders (4). The movable blocks (3) are symmetrically arranged on the control panel (1). The cylinders (4) are fixedly connected to the bottom of the control panel (1). Each movable block (3) is connected to the output end of the cylinder (4) for transmission. The clamping wheels (31) are arranged at the ends of the corresponding movable blocks (3), and each clamping wheel (31) is elastically connected to the movable block (3). A trimming device (2) is fixedly connected to one of the movable blocks (3).
2. The trimming machine for automobile steering wheels according to claim 1, characterized in that, The bottom of the operating table (1) is fixedly connected to a mounting bracket (43), and a push block (42) is slidably connected on the mounting bracket (43). The push block (42) is fixedly connected to the output end of the cylinder (4).
3. The trimming machine for automobile steering wheels according to claim 2, characterized in that, The corner of the push block (42) is rotatably connected to a transmission rod (41), and each transmission rod (41) is fixedly connected to a column on its edge.
4. The trimming machine for automobile steering wheels according to claim 3, characterized in that, The operating table (1) is provided with a discharge trough (11) and multiple through holes (12). The column on each transmission rod (41) is connected to the through hole (12) and the column is rotatably connected to the bottom of the corresponding movable block (3).
5. The trimming machine for automobile steering wheels according to claim 1, characterized in that, Each of the movable blocks (3) is slidably connected to a slide rod (33) at its end. The slide rod (33) is fixedly connected to a mounting frame (32), and the clamping wheel (31) is rotatably connected to the mounting frame (32).
6. The trimming machine for an automobile steering wheel according to claim 5, characterized in that, The drive motor (35) is fixedly connected to one of the mounting frames (32), and the output end of the drive motor (35) is fixedly connected to one of the clamping wheels (31).
7. The trimming machine for an automobile steering wheel according to claim 5, characterized in that, Each of the slide bars (33) is fitted with a spring (34), and the end of each spring (34) is fixedly connected to the corresponding movable block (3) and mounting frame (32).