Finish-ground super-hard sand wheel for micro drilling and manufacturing method thereof

A fine grinding and micro-drilling technology, used in bonded grinding wheels, grinding/polishing equipment, abrasives, etc., can solve the problems of low bonding force between the abrasive layer and the substrate, inability to fine-grinding micro-drilling tips, and low grinding wheel toughness. , to achieve the effect of reducing the trimming frequency, improving the yield and improving the quality

Active Publication Date: 2016-08-17
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of resin grinding wheel is only used for the semi-finishing of the micro-drilling edge, and cannot be applied to the fine grinding of the micro-drilling point. Moreover, the bonding force between the abrasive layer and the substrate of this type of grinding wheel is low, which easily leads to low toughness of the grinding wheel. poor wear resistance

Method used

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  • Finish-ground super-hard sand wheel for micro drilling and manufacturing method thereof
  • Finish-ground super-hard sand wheel for micro drilling and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, the fine grinding superhard grinding wheel for micro-drilling in this embodiment includes a base 2 and an abrasive layer 1. The base is aluminum, and the abrasive layer is composed of the following components by weight: 30.15g polyamide PA1012, 30.15g polyimide, The polyimide uses the thermosetting polyimide resin powder shown in Table 1, 44g diamond with a particle size of M4 / 8, 80g silicon carbide with a particle size of M1 / 2, and 6g polytetrafluoroethylene with a particle size of ≤10μm (PTFE), 56g of cerium oxide with particle size ≤10μm.

[0035] The preparation method of the fine grinding super-hard grinding wheel for micro-drilling includes the following steps:

[0036] 1) Weigh the binder thermoplastic polyamide resin powder PA1012 and thermosetting polyimide resin powder, abrasive diamond powder, silicon carbide powder, and cerium oxide powder according to the above weight; mix the weighed raw materials, stir and grind and mix for 30 minute...

Embodiment 2

[0042] Such as figure 2 As shown, the fine grinding superhard grinding wheel for micro-drilling in this embodiment includes a base 4 and an abrasive layer 3. The base is aluminum, and the abrasive layer is composed of the following components by weight: 29.3g polyamide PA1012, 58.6g polyimide, The polyimide uses the thermosetting polyimide resin powder shown in Table 1, 88g diamond with a particle size of M2 / 4, 51.2g silicon carbide with a particle size of M0 / 1, 4.8g with a particle size of ≤10μm Polytetrafluoroethylene (PTFE), 44.8g of cerium oxide with a particle size ≤ 10μm.

[0043] The preparation method of the fine grinding super-hard grinding wheel for micro-drilling includes the following steps:

[0044] 1) Weigh the binder thermoplastic polyamide resin powder PA1012 and thermosetting polyimide resin powder, abrasive diamond powder, silicon carbide powder, and cerium oxide powder according to the above weight; mix the weighed raw materials, stir and grind and mix for 40 m...

Embodiment 3

[0050] The fine grinding super-hard grinding wheel for micro-drilling in this embodiment includes a substrate and an abrasive layer, the substrate is aluminum, and the abrasive layer is composed of the following components by weight: 15.2g polyamide PA1012, 45.6g polyimide, the polyimide Using the thermosetting polyimide resin powder shown in Table 1, 66g diamond with a particle size of M1 / 2, 67.2g silicon carbide with a particle size of M0 / 1, 4.8g polytetrafluoroethylene (PTFE) with a particle size ≤10μm, 33.6g of cerium oxide with particle size ≤10μm.

[0051] The preparation method of the fine grinding super-hard grinding wheel for micro-drilling includes the following steps:

[0052] 1) Weigh the binder thermoplastic polyamide resin powder PA1012 and thermosetting polyimide resin powder, abrasive diamond powder, silicon carbide powder, and cerium oxide powder according to the above weight; mix the weighed raw materials, stir evenly, and grind and mix for 35 minutes. Then sieve...

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Abstract

The invention relates to a finish-ground super-hard sand wheel for micro drilling and a manufacturing method thereof, and belongs to the technical field of super-hard materials and products. The finish-ground super-hard sand wheel for micro drillingcomprises a matrix and an abrasive layer. The abrasive layer comprises, by weight, 44-88 parts of abrasives, 60.3-87.9 parts of bonding agents and 100.8-142 parts of filler, wherein the bonding agents are composed of polyamide resin and polyimide resin with the weight ratio being 1:1-3; and the filler is made of silicon carbide, polytetrafluoroethylene and cerium oxide. The toughness and abrasion resistance of the finish-ground super-hard sand wheel for micro drillingare improved, the shock resistance and shock absorption properties of the sand wheel are improved in the workpiece machining process, and the workpiece quality is improved.

Description

Technical field [0001] The invention relates to a fine grinding superhard grinding wheel for micro drills and a preparation method thereof, and belongs to the technical field of superhard materials and products. Background technique [0002] Micro drills (drill diameter ≤ 1mm) are mainly used in drilling and processing of electronic components, precision molds, aerospace and other industries. With the improvement of the level of scientific and technological development, the demand for precision equipment and ultra-precision electronic components is increasing, and the precision requirements are getting higher and higher. The quality of the corresponding ultra-fine micro-drills (drill diameter ≤ 0.2mm) is also proposed In order to meet higher requirements, the cutting edge quality of the main cutting edge of the micro drill is a key factor affecting the quality of the micro drill. [0003] In the production and processing of micro-drills, it is necessary to use external edge grindi...

Claims

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Application Information

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IPC IPC(8): B24D3/28B24D3/34B24D5/00B24D18/00
CPCB24D3/28B24D3/344B24D5/00B24D18/0009
Inventor 赵延军张高亮刘权威
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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