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CN-116141213-B - Atmospheric hole grinding wheel for grinding linear guide rail and preparation method thereof

CN116141213BCN 116141213 BCN116141213 BCN 116141213BCN-116141213-B

Abstract

The invention belongs to the field of grinding wheels, and particularly relates to an atmospheric hole grinding wheel for grinding a linear guide rail and a preparation method thereof. The large-pore grinding wheel is mainly prepared from 100 parts by weight of abrasive and binder, 7-10 parts by weight of pore-forming material, wherein the consumption of the binder is 12-18 parts, the binder is a high-strength low-temperature ceramic binder, the refractoriness of the high-strength low-temperature ceramic binder is 930-960 ℃, and the abrasive consists of 10-50 parts by weight of ceramic corundum, 10-50 parts by weight of white corundum and 15-60 parts by weight of monocrystalline corundum. The atmospheric hole grinding wheel for grinding the linear guide rail has the advantages that the self-sharpening property of the grinding wheel is good and the shape retention is high due to the cooperation of the mixed abrasive and the low-temperature ceramic bonding agent, so that the technical requirement of the grinding processing of the linear guide rail is met.

Inventors

  • MENG YANG
  • ZHOU CHUANXUN
  • SUN LONG
  • WEI XIAOJIE

Assignees

  • 白鸽磨料磨具有限公司

Dates

Publication Date
20260505
Application Date
20220907

Claims (8)

  1. 1. The large-pore grinding wheel for grinding the linear guide rail is characterized by comprising, by weight, 100 parts of an abrasive and a bonding agent, 7-10 parts of a pore-forming material, 1-5 parts of a wetting agent and 0.2-1.5 parts of a bonding agent, wherein the bonding agent is 12-18 parts, the bonding agent is a high-strength low-temperature ceramic bonding agent, the refractoriness of the high-strength low-temperature ceramic bonding agent is 930-960 ℃, the high-strength low-temperature ceramic bonding agent consists of ：SiO 2 62~64%,Al 2 O 3 14~16%,Fe 2 O 3 1~2%,K 2 O 9~10%,Na 2 O 5~6%,Li 2 CO 3 4~5%,CaCO 3 2~3%; parts by mass of ceramic corundum, white corundum and monocrystalline corundum according to the mass ratio of (10-50) to (15-60) to 20, the wetting agent is water glass, and the bonding agent is dextrin.
  2. 2. The atmospheric grinding wheel for grinding linear guide rails according to claim 1, wherein the grain size of the ceramic corundum is F80, the grain size of the white corundum is F80, and the grain size of the single crystal corundum is F100.
  3. 3. The atmospheric grinding wheel for grinding linear guide rails according to claim 1, wherein the pore-forming material is refined naphthalene with a particle size of F40-F80.
  4. 4. A method for preparing the atmospheric grinding wheel for grinding the linear guide rail according to any one of claims 1-3, which is characterized by comprising the steps of mixing materials according to a proportion, forming, drying and sintering at 1000 ℃.
  5. 5. The method for preparing the atmospheric grinding wheel for grinding the linear guide rail according to claim 4, wherein the mixing comprises the steps of firstly dry mixing the grinding materials, adding the wetting agent for wet mixing, adding the binding agent for mixing, adding the pore-forming material for mixing, and sealing and choke-charging for 12-24 hours.
  6. 6. The method for preparing the atmospheric grinding wheel for grinding the linear guide rail according to claim 4 or 5, wherein after mixing, the materials are fed for 3-5 times, before the last feeding, the materials are stirred, scraped and rammed after each feeding, the materials are stirred, scraped and compacted after the last feeding, and the compacting pressure is 5-10 MPa, and the pressure is maintained for 30s.
  7. 7. The method of manufacturing an atmospheric grinding wheel for grinding a linear guide according to claim 4, wherein the drying is natural drying for one day and drying at 110 ℃ for one day.
  8. 8. The method for manufacturing the atmospheric grinding wheel for grinding the linear guide rail according to claim 4 or 7, wherein the firing is performed by heating to 110-120 ℃ for 3-4 hours, heating to 1000 ℃ at a rate of 20-60 ℃ per hour, holding at 1000 ℃ for 16 hours, cooling to 700-800 ℃ at a rate of 50-200 ℃ per hour, cooling to 150-200 ℃ at a rate of 25-50 ℃ per hour, cooling to 55-60 ℃ at a rate of 13-15 ℃ per hour, and holding for 10-11 hours.

Description

Atmospheric hole grinding wheel for grinding linear guide rail and preparation method thereof Technical Field The invention belongs to the field of grinding wheels, and particularly relates to an atmospheric hole grinding wheel for grinding a linear guide rail and a preparation method thereof. Background Linear guides are widely used as sliding parts for industrial machines such as precision machine tools, textile machines, food packaging machines, printing machines, and the like. Along with the rapid development of the intelligent manufacturing industry, the development of high speed, high precision and environmental protection and energy saving in the machine tool industry is promoted, and higher requirements are also put on the dimensional accuracy, straightness and stability of the linear guide rail. The linear guide rail is mainly made of alloy steel, the length of the linear guide rail can reach more than 4 meters, sliding grooves are formed in two sides of the linear guide rail for assembling the sliding blocks, and the groove surfaces of the sliding grooves are in contact with rolling parts in the sliding blocks. When the chute is processed, the corresponding part is subjected to surface quenching treatment, so that the hardness is high, and the requirements on the grinding removal capacity, the linear shape retention capacity and the processing precision of the grinding wheel are high. The related capability of the existing grinding wheel product is deficient when the linear guide rail is ground, and the related capability is mainly represented by the following aspects: 1. the problems of dimensional accuracy and shape retention are further improved so as to meet the requirements of high-precision linear guide rail products. 2. The workpiece is easy to burn, shake marks, scratch and the like in the grinding process. 3. The grinding efficiency is low and frequent dressing is required. Disclosure of Invention The invention aims to provide an atmospheric hole grinding wheel for grinding a linear guide rail, which solves the problems of the existing grinding wheel that the dimensional accuracy, shape retention, surface roughness and the like are to be improved when the linear guide rail is ground. The second object of the invention is to provide a method for preparing the atmospheric hole grinding wheel for grinding the linear guide rail. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The atmospheric hole grinding wheel for grinding the linear guide rail is mainly prepared from the following raw materials, by weight, 100 parts of grinding materials and 7-10 parts of pore-forming materials, wherein the consumption of the bonding agents is 12-18 parts, the bonding agents are high-strength low-temperature ceramic bonding agents, the refractoriness of the high-strength low-temperature ceramic bonding agents is 930-960 ℃, the high-strength low-temperature ceramic bonding agents consist of ：SiO2 62～64％,Al2O3 14～16％,Fe2O3 1～2％,K2O 9～10％,Na2O 5～6％,Li2CO3 4～5％,CaCO3 2～3％; parts by mass of ceramic corundum, white corundum and monocrystalline corundum, and the grinding materials consist of (10-50) by mass (15-60) by 20. The invention relates to an atmospheric hole grinding wheel for grinding a linear guide rail, which is prepared from a low-temperature ceramic bonding agent and a mixed abrasive material consisting of ceramic corundum, white corundum and monocrystalline corundum. The low-temperature ceramic bond is designed aiming at the mixed abrasive, so that the refractoriness of the bond is greatly reduced, the sintering temperature of the grinding wheel is reduced, and the production period of the grinding wheel is accelerated. In addition, the bonding agent generates more liquid phase in the sintering process, the bonding agent can wet the surface of the abrasive particles in a large area, has stronger reaction capability with the abrasive particles, has better holding force on the abrasive particles, generates more glass phase and improves the strength of the whole grinding tool. Preferably, the ignition loss of the low-temperature ceramic bond is 3-4.5%. The matching of the mixed abrasive and the low-temperature ceramic bond ensures that the grinding wheel has good self-sharpening property and higher shape retention, and meets the technical requirements of linear guide rail grinding processing. Preferably, the granularity of the ceramic corundum is F80, the granularity of the white corundum is F80, and the granularity of the single crystal corundum is F100. Preferably, the pore-forming material is refined naphthalene with a particle size of F40-F80. Preferably, the raw materials comprise a wetting agent and a binder, wherein the wetting agent is water glass, and the binder is dextrin. Further preferably, the amount of the wetting agent is 1 to 5 parts per 100 parts of the abrasive and the binder, and the amount of the binder is 0.2 to 1.5 parts. The amou