Rubber bearing polishing and grinding tool
By designing a rubber bearing polishing tool containing tool body and a sand belt, the problems of high manufacturing cost and poor safety of rubber bearing inner holes in the prior art are solved, and a low-cost, safe and reliable polishing effect is achieved, which is suitable for inner and outer circular and flat polishing of metal materials.
Patent Information
- Application Number
- CN202422270675.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In the prior art, the manufacturing of rubber bearing inner holes has problems such as high cost, poor safety and poor surface quality, especially in the grinding process, which is prone to clogging the grinding wheel and posing safety risks.
A rubber bearing polishing tool is adopted, including a tool body, a compression unit and a sand belt. The sand belt is fixedly connected to the tool body through a compression unit. It is polished using a sand belt made of brown corundum abrasive and operated in combination with an external lathe to achieve the dimensional accuracy and surface roughness requirements of the inner hole.
It realizes low-cost, safe and reliable inner hole polishing of rubber bearings, reduces the surface roughness value, improves the simplicity and safety of operation, and is suitable for inner and outer circle and plane polishing of metal materials.
Smart Images
Figure CN223289526U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of polishing tools, in particular to a rubber bearing polishing tool. Background Art
[0002] Rubber bearings are crucial components in water pump shafting, and their manufacturing quality is crucial for ensuring the smooth operation of the pump. High requirements are placed on the inner bore precision and surface quality of rubber bearings, making it difficult to achieve these design requirements through turning alone. A turning-then-polishing process is required to achieve a surface roughness of Ra1.6.
[0003] In the existing technology, rubber bearing manufacturers often use a lathe-before-grinding process. A special motor-driven grinding head is installed on the center carriage of the lathe to grind the inner hole of the rubber bearing, so that the inner hole size accuracy and surface quality meet the specified requirements. Although the inner hole size and surface quality of the rubber bearing can meet the design requirements by installing a special motor-driven grinding head on the center carriage of the lathe, there are disadvantages such as high precision requirements for the special grinding head and high investment costs. Due to the high elasticity and poor thermal conductivity of rubber, grinding chips can easily clog the grinding wheel during grinding, causing the grinding wheel to lose its grinding ability, resulting in defects such as uneven surface and poor surface quality of the workpiece. At the same time, due to the high rotation speed of the grinding wheel head, if the grinding wheel breaks, it can easily cause injury, posing a safety risk.
[0004] Therefore, it is necessary to develop new rubber bearing polishing tools in a targeted manner to reduce costs and improve safety. Utility Model Content
[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, the utility model provides a rubber bearing polishing tool with the characteristics of simple structure, convenient operation, safety and reliability, economy and practicality, and can achieve the dimensional accuracy and surface roughness requirements of the inner hole of the rubber bearing at a low cost.
[0006] Technical solution: The utility model is a rubber bearing polishing tool, which is characterized in that it includes a tool body, a clamping unit and an abrasive belt, and the abrasive belt is fixedly connected to the tool body through the clamping unit; the tool body includes a cutter body and a pad, the clamping unit includes a pressure plate and a screw, the cutter body is a T-shaped structure, the pad cross-section is a semicircular structure, the abrasive belt part is located between the cutter body and the pressure plate and is fixed by screws, and the abrasive belt part contacts the inner surface of the rubber bearing in accordance with the shape.
[0007] Wherein, one end of the cutter body is provided with a group of threaded holes for connecting the pad, and the top of the cutter body is provided with a group of threaded holes for installing the pressure plate.
[0008] The end face of the other end of the cutter body is a square structure and is installed in the external lathe hole turning tool seat.
[0009] The cushion block is provided with a set of stepped holes, and the cutter body and the cushion block are connected by means of hexagon socket head screws passing through the stepped holes and the threaded holes at the ends of the cutter body.
[0010] Wherein, the countersunk holes and screw pits on the arc surface of the cushion block are filled with epoxy resin material.
[0011] The pressure plate is provided with a group of connection holes, and the cutter body and the pressure plate are connected by screws passing through the connection holes and the threaded holes on the top of the cutter body.
[0012] Wherein, the sanding belt is made of brown corundum abrasive, and the mesh number of the sanding belt is 60 mesh, 80 mesh, 180 mesh or 240 mesh.
[0013] Beneficial Effects: Compared with existing technologies, this invention offers the following significant advantages: a simple structure, ease of manufacture, ease of operation, high safety, excellent polishing results, and low process costs. It can be applied to polishing inner and outer circles and flat surfaces of metal materials, reducing surface roughness. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural diagram of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the tool body of the utility model;
[0016] In the figure, 1 is a tool body; 11 is a cutter body; 12 is a spacer; 13 is a hexagon socket head screw; 14 is an epoxy resin material; 2 is a clamping unit; 21 is a pressure plate; 22 is a screw; and 3 is an abrasive belt. DETAILED DESCRIPTION
[0017] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0018] As shown in the figure, the present invention's rubber bearing polishing tool comprises a tool body 1, a clamping unit 2, and an abrasive belt 3. The tool body 1 is composed of a cutter body 11 and a pad 12. The cutter body 11 is T-shaped, with a set of threaded holes on one side for connection to the pad 12 and a set of threaded holes on the top for mounting a pressure plate 21. The other end has a square cross-section for mounting in a lathe toolholder. The pad 12 has a semicircular cross-section. The abrasive belt 3 is placed on the pad 12, making linear contact with the inner surface of the rubber bearing to reduce grinding forces. The pad 12 is provided with a set of stepped holes, which are connected to a corresponding set of threaded holes on the side of the cutter body 11 using hexagon socket head screws 13. The pad 12 is made of a non-metallic material such as hard wood or nylon, providing shock absorption. The countersunk holes and screw recesses on the arc surface of the pad 12 are filled and smoothed with epoxy resin material 14 to ensure smooth contact between the abrasive belt and the rubber bearing during grinding.
[0019] The pressing unit 2 includes a pressing plate 21 and screws 22. The pressing plate 21 is provided with a group of connecting holes corresponding to the cutter body 11, which is used to fasten the sanding belt 3 to the cutter body 11 through the pressing plate 21 and the screws 22. By loosening the screws 22, the sanding belt 3 can be quickly replaced.
[0020] The sanding belt 3 uses brown corundum abrasive, 60 mesh or 80 mesh is selected for coarse grinding, and 180 mesh or 240 mesh is selected for fine grinding. In the specific implementation process, the sanding belt parameters can be adjusted to other required values as needed.
[0021] During use, the lathe chuck clamps the rubber bearing housing, driving the rubber bearing to rotate as the main motion. The turning tool row is equipped with a polishing tool for feed motion. The rough and fine polishing process is performed on the turned inner hole of the rubber bearing. A brown corundum abrasive belt is selected, with 60 or 80 mesh for rough grinding and 180 or 240 mesh for fine grinding. The appropriate cutting amount is selected during polishing to achieve a surface roughness of Ra1.0 to 1.6 on the rubber bearing. This utility model can polish the inner and outer circles and planes of metal workpieces to reduce the surface roughness value. The polishing process is similar to turning the inner hole. The workpiece rotates as the main motion and the tool performs the feed motion. The operation is simple, safe and reliable.
Claims
1. A rubber bearing polishing tool, characterized by: The invention comprises a tool body (1), a pressing unit (2) and an abrasive belt (3), wherein the abrasive belt (3) is fixedly connected to the tool body (1) through the pressing unit (2); the tool body (1) comprises a cutter body (11) and a cushion block (12); the pressing unit (2) comprises a pressing plate (21) and a screw (22); the cutter body (11) is a T-shaped structure; the cushion block (12) has a semicircular cross-section; the abrasive belt (3) is located between the cutter body (11) and the pressing plate (21) and is fixed by the screw (22); and the abrasive belt (3) is in contact with the inner surface of the rubber bearing.
2. The rubber bearing polishing tool according to claim 1, characterized in that: One end of the cutter body (11) is provided with a group of threaded holes for connecting the cushion block (12), and the top of the cutter body (11) is provided with a group of threaded holes for installing the pressure plate (21).
3. The rubber bearing polishing tool according to claim 2, characterized in that: The end surface of the other end of the tool body (11) is a square structure and is installed in the tool row seat of the external lathe.
4. The rubber bearing polishing tool according to claim 2, characterized in that: The cushion block (12) is provided with a group of stepped holes, and the cutter body (11) and the cushion block (12) are connected by means of hexagon socket head screws (13) passing through the stepped holes and the threaded holes at the ends of the cutter body (11).
5. The rubber bearing polishing tool according to claim 2, characterized in that: The pressure plate (21) is provided with a group of connection holes, and the blade body (11) and the pressure plate (21) are connected by screws (22) passing through the connection holes and the threaded holes on the top of the blade body (11).
6. The rubber bearing polishing tool according to claim 1, characterized in that: The sanding belt (3) is made of brown corundum abrasive, and the mesh number of the sanding belt (3) is 60 mesh, 80 mesh, 180 mesh or 240 mesh.