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A kind of composite machining method of high-volume aluminum-based silicon carbide threaded hole

An aluminum-based silicon carbide and composite processing technology, which is applied in the composite processing of aluminum-based silicon carbide threaded holes and the composite processing of high-volume aluminum-based silicon carbide threaded holes, can solve the problems of screw hole chipping, low processing efficiency, and screw hole chipping. Insufficient tooth strength and other problems, to achieve the effect of slowing down the contact state, ensuring the quality of the processed surface, improving the processing quality and the accuracy of the screw tooth shape

Active Publication Date: 2022-07-29
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology

Due to the closed space and complex structure of the threaded hole, the high-volume SiCp / Al material has high hardness and high brittleness. In the process of processing with the existing technology, there are severe tool wear, chipping of the threaded hole, and difficulty in precision and thread shape accuracy. Guarantee, insufficient thread strength, low processing efficiency and other outstanding problems seriously affect the processing quality and efficiency of products

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  • A kind of composite machining method of high-volume aluminum-based silicon carbide threaded hole

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Embodiment Construction

[0026] The present invention is further described below.

[0027] High-volume SiCp / Al materials have typical hard and brittle characteristics. In view of the problems of the current prior art, the phenomenon of serious chipping at the exit in small hole drilling, and the large area of ​​surface defects caused by particles falling off in thread processing, the present invention provides a method. A milling-grinding-integrated composite machining method based on multi-dimensional ultrasonic vibration, through tool design and process parameter optimization, the unfavorable machining state is alleviated, and the thread machining quality and efficiency are improved.

[0028] The basic idea of ​​the method of the invention is as follows: the threaded hole is processed on the multi-dimensional ultrasonic vibration machine tool by using a milling tool, the thread processing is completed by means of the tool path design of the milling process during the processing, and the micro-cutting...

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Abstract

The invention relates to a composite machining method for high-volume aluminum-based silicon carbide threaded holes. The threaded holes of standard specifications are machined on aluminum-based silicon carbide materials with a volume fraction higher than 50%, and the milling-grinding integrated composite machining based on multi-dimensional ultrasonic vibration is used. The method fully combines the advantageous processing methods of difficult-to-machine materials, such as grinding, ultrasonic vibration processing, and high-precision milling of threads. Through tool design and process parameter optimization, the current processing technology can reduce the loss and breakage of SiC particles during processing in the current processing technology. Unfavorable processing effects caused by other reasons, improve the quality and efficiency of thread processing.

Description

technical field [0001] The invention belongs to the field of precision machining, and relates to a composite machining method for high-volume aluminum-based silicon carbide threaded holes, in particular to a composite machining method for aluminum-based silicon carbide threaded holes with a SiC volume fraction higher than 50 percent. Background technique [0002] Aluminum-based silicon carbide (SiCp / Al) is a particle-reinforced metal matrix composite material that combines the excellent properties of aluminum matrix and SiC particle reinforcement. It has high specific strength and specific modulus, high temperature resistance, wear resistance, and low thermal expansion coefficient. It has urgent application requirements and broad application prospects in aerospace, armed equipment and other fields. However, with the continuous increase of the SiC volume fraction, the hardness, brittleness, and wear resistance of the material also increase, which makes SiCp / Al with a SiC volu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23G1/32B23G1/36
CPCB23P15/00B23G1/32B23G1/36
Inventor 郑立彦张加波张孝辉高泽张开虎白燕李星冯金庆
Owner BEIJING SATELLITE MFG FACTORY
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