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Method for controlling grinding efficiency and surface quality of particle-reinforced titanium-based composite material

A titanium-based composite material and particle-reinforced technology, which is applied in the direction of automatic grinding control devices, grinding machine parts, workpiece feed movement control, etc., can solve the problems of poor surface quality and low processing efficiency, and achieve improved processing Effects of improving surface quality, improving machining accuracy and efficiency, and omitting the grinding wheel dressing process

Inactive Publication Date: 2015-01-21
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 provide a method for controlling the grinding efficiency and surface quality of particle-reinforced titanium-based composite materials, so as to solve the problems of low processing efficiency and poor surface quality in the prior art

Method used

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  • Method for controlling grinding efficiency and surface quality of particle-reinforced titanium-based composite material
  • Method for controlling grinding efficiency and surface quality of particle-reinforced titanium-based composite material
  • Method for controlling grinding efficiency and surface quality of particle-reinforced titanium-based composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1, rough grinding parameter setting, including grinding wheel linear speed 30m / s, workpiece feed speed 3000mm / min, grinding depth 0.030mm, grinding 1 time, grinding wheel without dressing.

[0020] Step 2, semi-finishing parameter setting, including grinding wheel linear speed 30m / s, workpiece feed speed 6000mm / min, grinding depth 0.015mm, grinding 4 times, grinding wheel without dressing.

[0021] Step 3, fine grinding parameter setting, including grinding wheel linear speed 30m / s, workpiece feed speed 9000mm / min, grinding depth 0.005mm, grinding 2 times, grinding wheel without dressing.

[0022] Step 4, light grinding parameter setting, including grinding wheel linear speed 30m / s, workpiece feed speed 12000mm / min, grinding 1 time, grinding wheel without dressing.

Embodiment 2

[0023] Embodiment 2. Verification test:

[0024] Comparative experiments were carried out from the aspects of abrasive types and grinding parameters to determine the process method that can effectively control the grinding efficiency and surface quality of particle-reinforced titanium matrix composites. The abrasive parameters of the traditional and the present application are shown in Table 1, the grinding parameters of the traditional and the control method of the present application are shown in Table 2 (corresponding respectively before and after improvement), and the (traditional) grinding wheel dressing parameters before improvement are shown in Table 3 , in the improved control method of the present application, there is no need to dress the grinding wheel. Table 2, v s , v w 、a p The symbols correspond to the grinding wheel linear speed, workpiece feed speed and grinding depth respectively.

[0025] Table 1 Abrasive parameters before and after improvement

[0026]...

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Abstract

The invention relates to a method for controlling the grinding efficiency and the surface quality of a particle-reinforced titanium-based composite material. The particle-reinforced titanium-based composite material is composed of a Ti-6Al-4V titanium alloy base body and TiC or TiB reinforced particles distributed in a diffused mode. A single-layer brazing CBN grinding wheel is adopted to grind the particle-reinforced titanium-based composite material. The linear speed of the grinding wheel is 30 m / s. The feeding speed ranges from 3000 mm / min to 12000 mm / min. The grinding depth ranges from 0.005 mm to 0.030 mm. The reinforced particles on the surface of the particle-reinforced titanium-based composite material are removed in a cut mode by controlling settings of parameters in the rough grinding step, the semi-fine-grinding step, the fine grinding step and the buffing step, and accordingly the surface grinding quality is improved.

Description

technical field [0001] The invention relates to a method for controlling the efficiency and surface quality in the grinding process of particle-reinforced titanium-based composite materials. Background technique [0002] Grinding is a precision machining method that can obtain high machining accuracy and surface quality, but the grinding efficiency is usually not high. The grinding efficiency depends on the amount of grinding and the dressing process. The wear of the grinding tool (that is, the grinding wheel) affects the grinding accuracy to a large extent. The wear resistance of the abrasive material of the grinding wheel determines the amount of wear of the grinding wheel. The dressing process of the grinding wheel in the grinding process inevitably increases the ineffective working time, which leads to a decrease in grinding efficiency. If the grinding efficiency is to be improved, it usually leads to a decrease in machining accuracy and a deterioration of surface qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24B51/00
CPCB24B19/00B24B49/183
Inventor 丁文锋赵彪徐九华傅玉灿苏宏华杨长勇陈燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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