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A resin-based centerless grinding wheel and its preparation method

A resin grinding wheel and centerless grinding technology, which is applied in the direction of grinding/polishing equipment, abrasive materials, grinding devices, etc., can solve the problems of poor processing efficiency and service life of the grinding wheel, heavy grinding wheel quality, large volume of the centerless grinding wheel, etc., so as to facilitate popularization , simple structure, and the effect of improving the finish

Active Publication Date: 2020-09-25
江苏赛扬精工科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the centerless grinding wheel is generally large in size, aluminum alloy rods or aluminum alloy plates are used as the substrate. Although the weight is lighter than the steel substrate, the overall quality of the grinding wheel is still heavy; at the same time, the super-hard abrasive layer is hot-pressed Poor bonding, resulting in poor processing efficiency and service life of the grinding wheel

Method used

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  • A resin-based centerless grinding wheel and its preparation method
  • A resin-based centerless grinding wheel and its preparation method

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preparation example Construction

[0027] The preparation method of resin-based centerless grinding wheel of the present invention comprises the following steps:

[0028] (1) Hot press and harden the resin powder and additives to prepare the bakelite matrix;

[0029] Resin binder preparation: Weigh the raw materials, the raw materials and their mass ratio are: the mass ratio of phenolic resin powder, copper-tin alloy 6040, silicon carbide, cryolite, and chromium oxide is (20~40): (30~40) : (15-24): (2-5): (2-8), each component of the resin binder is put into the three-dimensional mixer and mixed for 2-2.5 hours, and the binder is obtained after mixing evenly;

[0030] Abrasive mixture preparation: the mass ratio of abrasive wetting agent, abrasive, and resin bond is (1~3): 100: (80-120), method: add the wetting agent dropwise into the stirring abrasive, After the surface of the abrasive is wetted, add the binder, put them into the three-dimensional mixer and mix for 30-60 minutes to prepare the abrasive mixtur...

Embodiment

[0034] A resin-based centerless grinding wheel, the outer diameter of the grinding wheel is D350mm, the total thickness is T150mm, the hole diameter is H127mm, the width of the abrasive layer is X10mm, the grinding wheel is assembled in 5 pieces, and the thickness of each piece is 30mm.

[0035] The detailed preparation method comprises the following steps:

[0036] a. Glass fiber (100-400µm) is selected as the resin matrix additive, and the glass fiber is added into the dry blender, and the silane coupling agent KH-550 of 1wt% of the glass fiber mass is weighed, and the coupling is added dropwise during the stirring process. agent, stirred for 30min, and obtained glass fiber through coupling agent surface treatment;

[0037] b. Take a certain amount of phenolic resin powder and add it to the three-dimensional mixer, and add 10% of the mass of the phenolic resin powder to the surface-treated glass fiber, mix and stir for 80 minutes, until the mixture is observed to be uniform,...

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Abstract

The invention discloses a resin-based centerless grinding wheel and a preparation method thereof. The centerless grinding base adopts a bakelite base formed by one-time hot pressing of resin powder. The bakelite base is a mixture of resin powder and glass fiber, and the resin powder is phenolic resin powder. One or a combination of epoxy resin powder and polyimide resin powder. In the present invention, the aluminum alloy substrate of the centerless grinding wheel is changed to the resin bakelite substrate, and the weight is reduced by 1 / 3-2 / 3. The resin bakelite substrate is adopted, and the main components of the substrate material and the superabrasive layer are polymer materials, which increases the bonding force between the abrasive layer and the substrate. At the same time, the resin-based centerless grinding wheel has certain elasticity during use, which effectively improves the smoothness of the grinding workpiece. The invention has simple structure and is easy to popularize.

Description

technical field [0001] The invention relates to a resin-based centerless grinding wheel, which belongs to the technical field of centerless grinding wheel preparation. Background technique [0002] Centerless grinding is generally carried out on a centerless grinding machine. During grinding, the workpiece does not need to be centered and supported by the top, but is placed between the grinding wheel and the guide wheel, supported by the supporting plate below it, and driven by the guide wheel to rotate. In the existing preparation technology of centerless grinding wheel, aluminum alloy rod or aluminum alloy plate is generally used as the substrate for centerless grinding wheel. After the substrate is processed by car, the superhard abrasive layer is hot-pressed, and then assembled from multiple pieces. [0003] Since the centerless grinding wheel is generally large in size, aluminum alloy rods or aluminum alloy plates are used as the substrate. Although the weight is lighte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/28B24D3/32B24D3/34B24D18/00
CPCB24D3/28B24D3/342B24D18/0009
Inventor 张光宇王凯平
Owner 江苏赛扬精工科技有限责任公司