Machining process method of triple-head screw transmission pair for spacecraft mechanism

• Main Authors: LI XINLI, JIAO YUNLEI, DAI GUANGYONG, JI WEI
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2021
• Subjects: MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL; TRANSPORTING; WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL

The invention provides a machining process method of a three-head spiral transmission pair for a spacecraft mechanism. The method comprises the following steps that firstly, three-head spiral sheet electrodes are designed, and a laminated assembly electrode is formed by using a plurality of spiral sheet electrodes; then, an electric spark machine tool with a C shaft is adopted, and the laminated assembly electrode is installed on the C shaft; and finally, the screw transmission pair is subjected to electric discharge machining through an electric discharge machine tool, meanwhile, the C shaft does rotary motion, and therefore precise machining of a triple-head screw rod and a screw sleeve is achieved. According to the machining process method of the three-head screw transmission pair for the spacecraft mechanism, the machining difficulties that a conventional machining tool is large, and machining materials are high in hardness are overcome, irregular shape machining is facilitated, the high-precision size an