Cutting method of cavity for molding printing type |
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| 申请号 | JP6344882 | 申请日 | 1982-04-15 | 公开(公告)号 | JPS58181511A | 公开(公告)日 | 1983-10-24 |
| 申请人 | Matsushita Electric Works Ltd; | 发明人 | HASHIMOTO MASAHITO; | ||||
| 摘要 | PURPOSE:To improve quality of a printing type with simple control program, by forming a circular arc shaped locus in such a manner that the central part passes through the central part of a salient curved surface and both end parts pass through points deflectively positioned to the outside from both end parts of the salient curved surface while the center of the locus is located below the center of the salient curved surface. CONSTITUTION:A locus of the reference point P of an end mill 1 is programmed so as to draw a circular arc of radius R1, and this locus of circular arc shape is constituted such that a central part of the locus passes through the central part B of a salient curved surface 3 while both end parts pass through points A, C deflectively positioned by (r) to the outside from both end parts of the surface 3 and the radius R1 of the arc is formed larger than a radius R of the surface 3 then the center O3 of the arc is located below the center 0 of the surface 3. Then a linear part 8 is generated in the central part of the surface 3 cut for a minimum setting unit delta of a milling cutter controller, here a width 2alpha of the part 8 is smaller about 2r as compared with a conventional width, and a circular arc of one kind throughout a total range is only required as a control program of the end mill 1. | ||||||
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