Combined machining method for threaded hole in high-volume-fraction aluminum-based silicon carbide

An aluminum-based silicon carbide and composite processing technology, applied in metal processing equipment, manufacturing tools, thread cutting machines, etc., can solve problems such as low processing efficiency, chipped teeth and edges of screw holes, severe tool wear, etc., and achieves improved tooth profile surface Improve the quality, improve the accuracy of the screw tooth shape, and ensure the quality of the processed surface

Active Publication Date: 2021-03-16
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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  • Combined machining method for threaded hole in high-volume-fraction aluminum-based silicon carbide

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Embodiment Construction

[0026] The present invention will be further elaborated below.

[0027] High-volume SiCp / Al materials have typical hard and brittle characteristics. In view of the current existing technologies, the phenomenon of serious edge chipping at the exit during small hole drilling, and large-area surface defects caused by particle shedding in thread processing, the present invention provides a A milling-grinding integrated processing method based on multi-dimensional ultrasonic vibration, through tool design and process parameter optimization to reduce unfavorable processing status, improve the quality and efficiency of thread processing.

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

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Abstract

The invention relates to a combined machining method for a threaded hole in high-volume-fraction aluminum-based silicon carbide. According to the combined machining method, the threaded hole with thestandard specification is machined in an aluminum-based silicon carbide material with the volume fraction of higher than 50%, based on a multi-dimensional ultrasonic vibration milling and grinding combined machining method, an advanced machining method for grinding and ultrasonic vibration machining of a difficult-to-machine material is fully combined with a high-precision milling machining methodfor threads, adverse machining influences caused by SiC particle detachment, breakage and other reasons in the machining process in an existing machining technology can be reduced by optimizing the tool design and the technological parameters, and the thread machining quality and efficiency are improved.

Description

technical field [0001] The invention belongs to the field of precision machining, and relates to a compound processing method for a high-volume aluminum-based silicon carbide threaded hole, in particular to a compound processing method for an aluminum-based silicon carbide threaded hole with a SiC volume fraction higher than 50%. 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. And other excellent characteristics, it has urgent application requirements and broad application prospects in aerospace, armed equipment and other fields. However, as the SiC volume fraction increases, the hardness, brittleness, and wear resistance of the material also increase, which makes SiCp / Al w...

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Application Information

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Patent Type & Authority Applications(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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