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A fine grinding superhard grinding wheel for micro-drilling and preparation method thereof

A fine grinding and micro-drilling technology, which is applied in the direction of 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-grind the drill tip of micro-drilling, and low toughness of the grinding wheel. , to achieve the effect of reducing the frequency of trimming, increasing the yield and improving the quality

Active Publication Date: 2018-06-01
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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  • A fine grinding superhard grinding wheel for micro-drilling and preparation method thereof
  • A fine grinding superhard grinding wheel for micro-drilling and preparation method thereof

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Effect test

Embodiment 1

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

[0035] The preparation method of the fine grinding superhard emery wheel for above-mentioned micro-drilling comprises 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 ma...

Embodiment 2

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

[0043] The preparation method of the fine grinding superhard emery wheel for above-mentioned micro-drilling comprises the following steps:

[0044] 1) Take 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 wei...

Embodiment 3

[0050] The fine grinding superhard grinding wheel for micro-drilling of the present embodiment comprises a substrate and an abrasive layer, the substrate is aluminum, and the abrasive layer is made up of the following components by weight: 15.2g polyamide PA1012, 45.6g polyimide, the polyimide Adopt the thermosetting polyimide resin powder as shown in table 1, the diamond that 66g particle size is M1 / 2, the silicon carbide that 67.2g particle size is M0 / 1, the polytetrafluoroethylene (PTFE) of 4.8g particle diameter≤10 μm, 33.6 g of cerium oxide with a particle size of ≤10 μm.

[0051] The preparation method of the fine grinding superhard emery wheel for above-mentioned micro-drilling comprises 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 them evenly...

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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 precision grinding superhard grinding wheel for micro-drilling and a preparation method thereof, belonging to the technical field of superhard materials and products. Background technique [0002] Micro drills (drill diameter ≤ 1mm) are mainly used in the drilling 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 also getting higher and higher. The quality of the corresponding ultra-fine micro-drills (drill diameter ≤ 0.2mm) is also raised. Higher requirements are imposed, and the cutting edge quality of the main cutter face of the micro-drill is the key factor affecting the quality of the micro-drill. [0003] In the production and processing process of micro-drilling, it is necessary to use the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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