Surface treatment equipment for shaft shell
By combining hydraulic clamping and rotating grinding blocks, the problems of debris splashing and uneven grinding during the grinding process of shaft housing surface are solved, achieving safe and efficient shaft housing surface treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-03
AI Technical Summary
In the traditional process of grinding the surface of shaft housings, metal chips fly at high speeds, causing personal injury. In addition, the positioning accuracy of the rotating tooling is insufficient, resulting in uneven grinding, especially with large-sized shaft housings where the fixture has serious micro-displacement.
The shaft housing is fixed by a hydraulic clamping assembly. Combined with the rotation of the circular cover and grinding block driven by the motor, the hydraulic clamping assembly achieves static fixation, the circular cover blocks debris from flying, and the rotating parts ensure grinding accuracy.
It effectively prevents metal shavings from flying, improves grinding uniformity and precision, ensures stable fixation of large-size shaft housings, and enhances equipment operation safety and processing quality.
Smart Images
Figure CN223961010U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shaft housings, and more specifically, it relates to a surface treatment device for shaft housings. Background Technology
[0002] Shaft housings are critical components in mechanical transmission systems, typically made of cast iron, aluminum alloy, or engineering plastics. They primarily support rotating shafts and protect internal transmission mechanisms. Their structural design must balance rigidity and sealing; a common design is a hollow cavity structure with bearing mounting holes at both ends or sides, and they are fixed to other components by bolts. Shaft housings not only bear the radial and axial loads of the shaft but also must resist external environmental corrosion. Internally, they often integrate oil passages or cooling fins to optimize lubrication and heat dissipation. Widely used in motors, speed reducers, pumps, and vehicle transmission systems, their machining accuracy and assembly quality directly affect the operational stability and service life of the equipment.
[0003] In the surface treatment of shaft housings, there are two main technical challenges in the outer wall grinding stage: First, metal chips generated by traditional mechanical grinding will fly at high speed under centrifugal force, especially when using high-speed rotating tools such as grinding wheels, where the chip flying speed can reach over 200m / s, easily causing scratches or eye injuries. Second, to achieve uniform grinding in the entire circumference, the shaft housing needs to be fixed by a rotating fixture. However, the rotating mechanism usually uses bearings or sliding pairs for support, and its positioning accuracy (generally ±0.05mm) is insufficient to completely offset the vibrations generated during grinding (frequency can reach 50-200Hz), causing micro-displacement at the contact surface between the fixture and the workpiece, reducing the reliability of the fixation. This problem of insufficient dynamic stability is particularly significant when machining large-sized shaft housings (diameter > 300mm), with measured radial runout of the fixture reaching 0.15mm, which greatly affects the uniformity of grinding.
[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a surface treatment device for shaft housing. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a surface treatment device for shaft housing.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a surface treatment device for a shaft housing, comprising a base, wherein a hydraulic clamping assembly for fixing the shaft housing from the inside is installed on one side of the top end of the base, and a transverse moving assembly for driving a motor is installed on the other side of the top end of the base, and a circular cover is installed on the drive shaft of the motor, wherein a connecting shell is connected to the outer side wall of the circular cover, and an electric hydraulic rod A for driving a grinding block to move downward to grind the shaft housing is installed inside the connecting shell.
[0007] Preferably, the hydraulic clamping assembly includes a support frame fixed to the top of the base, and a plurality of electro-hydraulic rods B are installed at the head of the support frame, and an arc-shaped clamping plate is installed on the transmission part of the electro-hydraulic rods B.
[0008] Preferably, the clamping surface of the arc-shaped clamping plate is covered with a layer of rubber.
[0009] Preferably, the moving component includes an electric guide rail fixed to the top of the base to drive the slider to slide, a vertical plate is fixedly connected to the top of the slider, and the motor is mounted on the surface of the vertical plate.
[0010] Preferably, a rotating component is installed on the vertical plate to support the circular cover, so as to ensure the rotation accuracy of the circular cover and thus ensure the grinding accuracy of the grinding block.
[0011] Preferably, the rotating component includes an N-shaped frame mounted on the back of the vertical plate, and a circular ring plate is welded to the head of the N-shaped frame. A rotating block is slidably connected to the outer side wall of the circular ring plate, and the surface of the rotating block is fixed to the back of the circular cover by a connecting rod.
[0012] Preferably, the grinding block and the electric hydraulic rod A are detachably connected by screws, the base is made of cast iron, the motor is powered by a built-in battery, and the base 1 can stably support the equipment.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. This utility model can prevent metal chips from splashing by blocking the circular cover. At the same time, the method of rotating the grinding block makes the shaft housing not need to be fixed by a rotating tool. The hydraulic clamping component can achieve the fixing function alone, so that the shaft housing can be better kept in a stationary state, thereby improving the grinding uniformity and solving the problems of metal chip splashing and affecting grinding uniformity in the background technology.
[0015] 2. When the motor drives the circular cover to rotate, the circular cover will drive the rotating block to rotate through the connecting rod. The rotating block rotates along the circular ring plate, thereby providing rotational support for the circular cover to ensure the rotational accuracy of the circular cover, thus ensuring the grinding accuracy of the grinding block.
[0016] 3. The motor of this utility model is powered by a built-in battery, so there is no need to consider the problem of power cord winding and connection. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This utility model Figure 1 Another perspective on the specific structure;
[0020] Figure 3 This is a schematic diagram of the internal structure of the connecting shell in this utility model;
[0021] Figure 4 This is a schematic diagram of the specific structure of the rotating component in this utility model;
[0022] Figure 5 This is a schematic diagram of the connection structure between the annular plate and the N-shaped plate in this utility model;
[0023] Figure 6 This is a schematic diagram of the specific structure of the rotating block in this utility model.
[0024] In the diagram: 1. Base; 2. Hydraulic clamping assembly; 201. Support frame; 202. Electro-hydraulic rod B; 203. Arc-shaped clamping plate; 3. Moving assembly; 301. Electric guide rail; 302. Slider; 303. Vertical plate; 4. Motor; 5. Circular cover; 6. Connecting shell; 7. Grinding block; 8. Electro-hydraulic rod A; 9. Rotating component; 901. N-shaped frame; 902. Circular ring plate; 903. Rotating block; 904. Connecting rod. Detailed Implementation
[0025] like Figure 1-6 As shown, this utility model provides a surface treatment device for a shaft housing, including a base 1 (the base 1 is made of cast iron, which has a higher density and is heavier than ordinary materials of the same volume, thus providing stable support for the device). A hydraulic clamping assembly 2 is installed on one side of the top of the base 1 to fix the shaft housing from the inside. A lateral moving assembly 3 for driving a motor 4 is installed on the other side of the top of the base 1. A circular cover 5 is installed on the drive shaft of the motor 4. The motor 4 is powered by a built-in battery, so there is no need to consider the winding and connection of the power supply cable. A connecting shell 6 is connected to the outer wall of the circular cover 5. An electric hydraulic rod A8 is installed inside the connecting shell 6 to drive the grinding block 7 to move downward to grind the shaft housing. The grinding block 7 and the electric hydraulic rod A8 are detachably connected by screws, which facilitates the replacement of the grinding block 7.
[0026] In use, the shaft housing is fixed from the inside by the hydraulic clamping assembly 2. Then, the circular cover 5 is moved by the lateral moving assembly 3 to cover it. The electric hydraulic rod A8 then pushes the grinding block 7 radially with a constant pressure of 0.1-0.3MPa to contact the outer wall of the shaft housing. The motor 4 drives the circular cover 5 to rotate, which in turn drives the electric hydraulic rod A8 and the grinding block 7 to rotate and grind the outer wall of the circular cover 5. The circular cover 5 prevents metal chips from flying. At the same time, the rotation of the grinding block 7 means that the shaft housing does not need to be fixed by a rotating tool. The hydraulic clamping assembly 2 alone achieves the fixing function, which can better keep the shaft housing in a stationary state and improve the uniformity of grinding.
[0027] The following are the specific structures of the hydraulic clamping assembly 2 and the moving assembly 3: The hydraulic clamping assembly 2 includes a support frame 201 fixed on the top of the base 1, and a plurality of electric hydraulic rods B202 are installed on the head of the support frame 201. An arc-shaped clamping plate 203 is installed on the transmission part of the electric hydraulic rods B202. The moving assembly 3 includes an electric guide rail 301 fixed on the top of the base 1 to drive the slider 302 to slide. A vertical plate 303 is fixedly connected to the top of the slider 302, and a motor 4 is installed on the surface of the vertical plate 303.
[0028] The number of electric hydraulic rods B202 can be set to 2 to 4. When the shaft housing is fitted onto the grinding block 7, the electric hydraulic rods B202 drive the movement of the arc-shaped clamping plate 203 to fix it from the inside of the shaft housing. The clamping surface of the arc-shaped clamping plate 203 is covered with a layer of rubber. The rubber layer increases the surface friction coefficient and forms multi-point elastic contact with the inner wall of the shaft housing under the action of hydraulic tension, effectively suppressing the micro-displacement of the workpiece. The electric guide rail 301 drives the movement of the slider 302, thereby driving the movement of the motor 4 and the circular cover 5, thus completing the operation of the circular cover 5 being fitted onto the outside of the shaft housing or moving away from the shaft housing after processing.
[0029] Furthermore, a rotating component 9 is installed on the vertical plate 303 to support the circular cover 5. The rotating component 9 includes an N-shaped frame 901 installed on the back of the vertical plate 303, and a circular ring plate 902 is welded to the head of the N-shaped frame 901. A rotating block 903 is slidably connected to the outer wall of the circular ring plate 902, and the surface of the rotating block 903 is fixed to the back of the circular cover 5 by a connecting rod 904.
[0030] When the motor 4 drives the circular cover 5 to rotate, the circular cover 5 will drive the rotating block 903 to rotate through the connecting rod 904. The rotating block 903 rotates along the annular plate 902, thereby providing rotational support for the circular cover 5 to ensure the rotational accuracy of the circular cover 5, thus ensuring the grinding accuracy of the grinding block 7.
[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A surface treatment apparatus for axle housings, comprising a base (1), characterized in that: The top end of the base (1) is provided with a hydraulic clamping assembly (2) for fixing the shaft housing, the other side of the top end of the base (1) is provided with a transverse moving assembly (3) for moving the driving motor (4), the transmission shaft of the motor (4) is provided with a circular cover (5), the outer wall of the circular cover (5) is connected with a connecting shell (6), and the connecting shell (6) is provided with an electric hydraulic rod A (8) for driving the polishing block (7) to move downward to polish the shaft housing.
2. The shaft housing surface treatment apparatus according to claim 1, characterized by: The hydraulic clamping assembly (2) comprises a support frame (201) fixed on the top end of the base (1), and a plurality of electric hydraulic rods B (202) are arranged on the head of the support frame (201), and the transmission part of the electric hydraulic rod B (202) is provided with an arc-shaped clamping plate (203).
3. A shaft housing surface treatment apparatus according to claim 2, characterized by: The clamping surface of the arc-shaped clamping plate (203) is coated with a layer of rubber.
4. The shaft housing surface treatment apparatus according to claim 1, characterized by: The moving assembly (3) comprises an electric guide rail (301) for sliding the driving sliding block (302) fixed on the top end of the base (1), the top end of the sliding block (302) is fixedly connected with a vertical plate (303), and the motor (4) is arranged on the surface of the vertical plate (303).
5. A shaft housing surface treatment apparatus according to claim 4, characterized by: The vertical plate (303) is provided with a rotating part (9) for supporting the circular cover (5).
6. A shaft housing surface treatment apparatus according to claim 5, characterized by: The rotating part (9) comprises an N-shaped frame (901) arranged on the back of the vertical plate (303), and a circular ring plate (902) is welded on the head of the N-shaped frame (901), the outer wall of the circular ring plate (902) is slidably connected with a rotating block (903), and the surface of the rotating block (903) is fixed with the back of the circular cover (5) through a connecting rod (904).
7. The shaft housing surface treatment apparatus according to claim 1, characterized by: The polishing block (7) and the electric hydraulic rod A (8) are detachably connected by screws, the base (1) is made of cast iron material, and the motor (4) is powered by an internal battery.