发明名称 |
THREAD FORMING SCREW AND METHOD OF FORMING AN INTERNAL THREAD IN A LOW DUCTILITY MATERIAL |
摘要 |
A thread forming screw for cold forming internal threads in a workpiece comprised of a low ductility material, such as magnesium and the like. The screw uses primarily compressive forces to form the internal threads in the workpiece. The screw has a shank (16) having an entering end and a head end. external threads (24) are disposed on the shank (16). The external threads (24) define a thread configuration with an angle (66) measuring substantially within the range of ninety degrees to one hundred and twenty degrees. |
申请公布号 |
CA2087317(A1) |
申请公布日期 |
1993.08.01 |
申请号 |
CA19932087317 |
申请日期 |
1993.01.14 |
申请人 |
TEXTRON INC. |
发明人 |
HERTEL, PAUL E.;SCHNEIDER, JAMES R. |
分类号 |
B23G5/06;B23G7/00;F16B25/00;F16B25/06;F16B33/02;(IPC1-7):B23G9/00 |
主分类号 |
B23G5/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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