公开(公告)号：US4752164A

公开(公告)日：1988-06-21

申请号：US940805

申请日：1986-12-12

Applicant: John E. Leonard, Jr.

Inventor： John E. Leonard, Jr.

IPC: B23G5/04

CPC classification number: B23G5/04 ,  Y10T408/9045 ,  Y10T408/90473

Abstract: Chaser for cutting threads on a work piece, the chaser having thread cutting formations with crests and roots, one flank of each of said formations being relieved at a first angle from the region of the crest toward the root and being relieved at a greater angle in the region adjacent the root of the formation. The chasers may be provided in sets with odd numbered chasers being mirror images of the even numbered chasers.

Abstract translation: 用于在工件上切割螺纹的追击器，所述追击器具有带有顶部和根部的螺纹切割结构，每个所述结构的一个侧面以从顶部的区域朝向根部的第一角度释放，并以更大的角度被释放 邻近地层根部的区域。 可以提供具有奇数编号的追踪器的组合器，其是偶数编号的追随器的镜像。