Abrasive cluster and air hole three-dimensional controllable arrangement CBN (cubic boron nitride) grinding wheel and manufacturing method thereof

A technology of abrasives and pores, which is applied in the field of CBN grinding wheels with three-dimensional controllable arrangement of abrasive groups and pores and its manufacturing field, can solve the problems of no follow-up abrasive supplementation, complicated preparation process, and low abrasive concentration, and achieve low cost and high efficiency. The effect of grinding wheel life and easy operation

Active Publication Date: 2014-06-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of the existing CBN grinding wheel with multi-layer controllable arrangement of abrasive grains and pores, the preparation process is complex, the cost is high, the concentration of abrasive grains is low, and there is no follow-up abrasive grain replenishment after the abrasive grains fall off, and to provide an abrasive group CBN grinding wheel with controllable arrangement of pores and its preparation method

Method used

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  • Abrasive cluster and air hole three-dimensional controllable arrangement CBN (cubic boron nitride) grinding wheel and manufacturing method thereof
  • Abrasive cluster and air hole three-dimensional controllable arrangement CBN (cubic boron nitride) grinding wheel and manufacturing method thereof
  • Abrasive cluster and air hole three-dimensional controllable arrangement CBN (cubic boron nitride) grinding wheel and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0030] A kind of abrasive group in the working layer of the CBN grinding wheel is continuously arranged in a straight line, and the CBN grinding wheel with the controllable arrangement of the pores (the schematic diagram of the working layer is as follows Figure 5 , the width of the abrasive group area 4 is 2mm, the spacing is 6mm, the diameter of the pores 6 is 0.8mm, and the porosity of the matrix area 5 is 30%), the outer diameter of the CBN grinding wheel is 400mm, the inner diameter is 388mm, the arc of a single working layer is 11.25°, and the ring grinding wheel is inlaid 32 grinding wheel working layer segments. Its production method is:

[0031](1) Preparation of composite binder: The composite binders in the abrasive group area and the matrix area are prepared separately: the composite binder graphite in the abrasive group area accounts for 5% by mass, and the composite binder graphite in the matrix area accounts for 20% by mass. The rest is Cu-Sn-Ti active solder (...

Embodiment 2

[0039] A CBN grinding wheel in which the abrasive group is discretely distributed in the working layer of the CBN grinding wheel and the air pores are controllable (the schematic diagram of the working layer is as follows Image 6 As shown, the cross-sectional size of the abrasive group is 2mm×2mm, the spacing is 6mm, the pore diameter is 0.8mm, and the porosity of the carcass area is 30%), the outer diameter of the CBN grinding wheel is 400mm, the inner diameter is 388mm, the arc is 11.25°, and the ring grinding wheel is inlaid with 32 grinding wheel working layers. knots. Its production method is:

[0040] (1) Preparation of raw materials for composite binder and abrasive group area. The preparation method is the same as the step (1) of Example 1;

[0041] (2) Preparation of abrasive layer with controllable arrangement of abrasive groups and pores. Concrete preparation process comprises the following steps:

[0042] ① Control the distance between the lower module 3 of th...

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Abstract

The invention relates to an abrasive cluster and air hole three-dimensional controllable arrangement CBN (cubic boron nitride) grinding wheel and a manufacturing method thereof. The grinding wheel is composed of a base body and an abrasive layer adhered to the base body, wherein the abrasive layer comprises two parts, i.e. an abrasive cluster area and a carcass area; an abrasive cluster is continuously or discretely distributed in the abrasive layer. The abrasive cluster and air hole controllable arrangement is realized in a layered mode by controlling positions and sizes of slot holes or round holes of an abrasive cluster arrangement template, a carcass material arrangement template and a ceramic hollow sphere arrangement template relative to a mold cavity; the position of the slot hole of the abrasive cluster arrangement template is complementary with the position of the slot hole of the carcass material arrangement template; an air hole arrangement template hole cluster area is coincident with a carcass material arrangement template slot hole area. The method is simple in process and low in cost; the prepared grinding wheel is long in service life, excellent in self-sharpening performance, high in grinding efficiency and suitable for effectively and precisely grinding materials which are high in obdurability and difficult to process, such as high-temperature alloy and titanium alloy.

Description

technical field [0001] The invention relates to a CBN grinding wheel with a three-dimensional controllable arrangement of abrasive groups and pores and a manufacturing method thereof, belonging to the technical field of superabrasive abrasive manufacturing. Background technique [0002] CBN grinding wheels are widely used in high-efficiency precision and ultra-precision grinding of high-strength, tough and difficult-to-machine materials represented by nickel-based alloys and titanium alloys due to their excellent physical and chemical properties. At present, CBN superabrasive grinding wheels can be divided into single-layer grinding wheels and multi-layer grinding wheels. The theoretical research and grinding practice of single-layer CBN grinding wheels have proved that reasonable control of the distribution of CBN abrasives in the working layer of the grinding wheel can greatly improve the grinding performance of the grinding wheel. . Due to the limited technical level, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/00B24D3/04B24D18/00
Inventor 丁文锋马昌玉徐九华陈珍珍杨长勇傅玉灿苏宏华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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