An external cylindrical surface grinding and polishing tool for the end of a bar

Abstract

The present invention provides a grinding and polishing tool for the outer cylindrical surface of the end of a bar, which includes a grinding and polishing tool body and a flexible grinding and polishing medium; the grinding and polishing tool body includes a grinding and polishing processing cylinder, a transition connecting rod and a fixture connecting rod. The inside of the grinding and polishing processing cylinder is used to install the flexible grinding and polishing medium. A fastener installation hole is processed at the center of the bottom surface of the grinding and polishing processing cylinder. A plurality of transition connecting rods are welded on the end surface of the grinding and polishing processing cylinder, and a fixture connecting rod is welded at the end of the plurality of transition connecting rods. The fixture connecting rod is used to be connected with a angle grinder or a lathe clamping device, and the grinding and polishing tool is driven to rotate by the angle grinder or the lathe. The grinding and polishing tool of the present invention can solve the problem of difficult local grinding and polishing of the outer cylindrical surface of the end of a bar during the processing of shaft parts, effectively improve the grinding and polishing accuracy, and ensure the consistency of product quality; it can completely remove the oxide layer and meet the use requirements of subsequent processes of the bar; it can significantly reduce the labor intensity of workers and improve production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of surface finishing of materials, and particularly relates to a grinding and polishing tool for the outer circle surface of the end of a bar. Background Art

[0002] During the manufacturing process of shaft parts, it is necessary to perform local grinding and polishing on the end of the bar to remove the oxide layer on the outer circle surface of the end and improve the surface finish and roughness of the end of the bar. At present, the finishing treatment of the outer circle surface of the end of the bar generally adopts the method of manual grinding and polishing with sandpaper. The quality of grinding and polishing depends on the proficiency of the workers, and situations such as over-grinding or under-grinding are likely to occur. There are disadvantages such as poor consistency in the quality of the outer circle surface of the end of the bar after processing and inability to uniformly remove the oxide layer. Moreover, the manual operation efficiency is low, the labor intensity of the workers is high, and it is easy to affect the occupational health of the workers. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] The present invention provides a grinding and polishing tool for the outer circle surface of the end of a bar to solve the technical problems of improving the grinding and polishing accuracy and the consistency of surface quality, reducing the labor intensity of workers, and improving production efficiency.

[0005] (2) Technical Solutions

[0006] To solve the above technical problems, the present invention provides a grinding and polishing tool for the outer circle surface of the end of a bar. The grinding and polishing tool includes a grinding and polishing tool main body and a flexible grinding and polishing medium. Among them, the grinding and polishing tool main body includes a grinding and polishing processing cylinder, a transition connecting rod, and a fixture connecting rod. The inside of the grinding and polishing processing cylinder is used to install the flexible grinding and polishing medium. A fastener installation hole is processed at the center of the bottom surface of the grinding and polishing processing cylinder. A plurality of transition connecting rods are welded on the end surface of the grinding and polishing processing cylinder. The ends of the plurality of transition connecting rods are welded with a fixture connecting rod, and the fixture connecting rod is used to be connected with an angle grinder or a lathe clamping device, and the grinding and polishing tool is driven to rotate by the angle grinder or the lathe.

[0007] Further, the inner diameter of the grinding and polishing processing cylinder is 3-5 mm larger than the diameter of the end of the bar to be ground and polished.

[0008] Further, the flexible grinding and polishing medium is made of sandpaper or polishing cloth.

[0009] Further, the flexible grinding and polishing medium is formed by bending a rectangular sandpaper or polishing cloth with a plurality of triangular teeth on one side straight edge and a fastener fixing hole processed on each triangular tooth.

[0010] Further, the flexible grinding and polishing medium is inserted into the grinding and polishing cylinder of the grinding and polishing tool body. The side wall and triangular teeth of the flexible grinding and polishing medium are adhesively fixed to the inner wall and bottom of the grinding and polishing cylinder respectively. The bolt passes through the fixing hole of the fastener on the triangular tooth from the inside of the flexible grinding and polishing medium, and after the threaded end of the bolt passes through the fastener installation hole of the grinding and polishing cylinder, a nut is used to lock and fix it.

[0011] (III) Beneficial Effects

[0012] The present invention provides a grinding and polishing tool for the outer circular surface of the end of a bar, including a grinding and polishing tool body and a flexible grinding and polishing medium. The grinding and polishing tool body includes a grinding and polishing cylinder, a transition connecting rod, and a fixture connecting rod. The inside of the grinding and polishing cylinder is used to install the flexible grinding and polishing medium. A fastener installation hole is processed at the center of the bottom surface of the grinding and polishing cylinder. A plurality of transition connecting rods are welded on the end surface of the grinding and polishing cylinder, and a fixture connecting rod is welded to the ends of the plurality of transition connecting rods. The fixture connecting rod is used to connect with an angle grinder or a lathe clamping device, and the grinding and polishing tool is driven to rotate by the angle grinder or the lathe. The grinding and polishing tool of the present invention can solve the problem of difficult local grinding and polishing of the outer circular surface of the end of the bar during the processing of shaft parts, effectively improve the grinding and polishing accuracy, and ensure the consistency of product quality; it can completely remove the oxide layer and meet the usage requirements of subsequent processes of the bar; it can significantly reduce the labor intensity of workers and improve production efficiency. Description of the Drawings

[0013] Figure 1 is a three-dimensional structure diagram of the grinding and polishing tool according to an embodiment of the present invention;

[0014] Figure 2 is a perspective view of the three-dimensional structure of the grinding and polishing tool according to an embodiment of the present invention;

[0015] Figure 3 is a flow chart for manufacturing the flexible grinding and polishing medium in an embodiment of the present invention. Detailed Embodiments

[0016] To make the objectives, contents, and advantages of the present invention clearer, the following further describes in detail the specific embodiments of the present invention with reference to the drawings and embodiments.

[0017] This embodiment provides a grinding and polishing tool for the outer circular surface of the end of a bar, and its structure is as Figure 1 and 2 shown, mainly including a grinding and polishing tool body and a flexible grinding and polishing medium 2.

[0018] The polishing tool body includes a polishing cylinder, a transition connecting rod 4, and a fixture connecting rod 6. Among them, the inside of the polishing cylinder is used to install a flexible polishing medium 2. The inner diameter of the polishing cylinder is 3 - 5 mm larger than the end diameter of the bar to be polished. A fastener installation hole is machined at the center of the bottom surface of the polishing cylinder. A plurality of transition connecting rods 4 are welded on the end surface of the polishing cylinder, and a fixture connecting rod 6 is welded to the ends of the plurality of transition connecting rods 4. The fixture connecting rod 6 is used to connect to a grinder or a lathe clamping device, and the polishing tool is driven to rotate by the grinder or the lathe.

[0019] The flexible polishing medium 2 is made of sandpaper or polishing cloth. As Figure 3 shown, when making the flexible polishing medium 2, first, according to the length and inner diameter dimensions of the polishing cylinder of the polishing tool body 6, cut the sandpaper or polishing cloth into a rectangle with a plurality of triangular teeth 3 on one straight side, and machine a fastener fixing hole (a) on each triangular tooth 3; bend each triangular tooth 3 upward (b); bend the sandpaper or polishing cloth along the straight side where the triangular teeth 3 are located to form a circular tube structure with a closed tube wall (c); fold and lap each triangular tooth 3 in sequence towards the center of the cylinder axis, and make all the fastener fixing holes on each triangular tooth 3 overlap, finally forming the flexible polishing medium 2 in a cylindrical structure (d).

[0020] The flexible polishing medium 2 is inserted into the polishing cylinder of the polishing tool body 6, and the side wall and triangular teeth 3 of the flexible polishing medium 2 are respectively bonded and fixed to the inner wall and bottom of the polishing cylinder. Pass the bolt in the fastener 5 through the fastener fixing hole on the triangular tooth 3 from the inside of the flexible polishing medium 2, and after the threaded end of the bolt passes through the fastener installation hole of the polishing cylinder, use a nut to lock and fix it. Thus, the assembly of the polishing tool for the outer cylindrical surface of the bar end is completed.

[0021] During use, connect the fixture connecting rod 6 of the polishing tool for the outer cylindrical surface of the bar to a grinder or a lathe clamping device, insert the bar end into the flexible polishing medium 2 from the opening of the polishing cylinder, start the grinder or the lathe, the polishing cylinder drives the flexible polishing medium 2 to rotate, and the outer cylindrical surface of the bar is polished by the flexible polishing medium 2.

[0022] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A grinding and polishing tool for the outer circular surface of the end of a bar, characterized in that, The grinding and polishing tool includes a grinding and polishing tool body and a flexible grinding and polishing medium; wherein, the grinding and polishing tool body includes a grinding and polishing processing cylinder, a transition connecting rod and a fixture connecting rod. The inside of the grinding and polishing processing cylinder is used for installing the flexible grinding and polishing medium. A fastener installation hole is machined at the center of the bottom surface of the grinding and polishing processing cylinder. A plurality of transition connecting rods are welded on the end surface of the grinding and polishing processing cylinder, and a fixture connecting rod is welded at the end of the plurality of transition connecting rods. The fixture connecting rod is used to be connected with a angle grinder or a lathe clamping device, and the grinding and polishing tool is driven to rotate by the angle grinder or the lathe; the inner diameter of the grinding and polishing processing cylinder is 3-5 mm larger than the end diameter of the bar to be ground and polished; the flexible grinding and polishing medium is formed by bending a rectangular sandpaper or polishing cloth with a plurality of triangular teeth on one side straight edge and a fastener fixing hole machined on each triangular tooth; the flexible grinding and polishing medium is inserted into the grinding and polishing processing cylinder of the grinding and polishing tool body, and the side wall and the triangular teeth of the flexible grinding and polishing medium are respectively bonded and fixed to the inner wall and the bottom of the grinding and polishing processing cylinder; a bolt passes through the fastener fixing hole on the triangular tooth from the inside of the flexible grinding and polishing medium, and after the threaded end of the bolt passes through the fastener installation hole of the grinding and polishing processing cylinder, a nut is used to lock and fix it.

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