To efficiently carry out NC machining of a slide core hole by making good use of high-speed cutting performance of a five-shaft machining machine.
In carrying out of slide core hole machining, a main shaft head is rotated depending on an inclined angle of each slide core hole to be machined in a die, and an A axis angle is fixed, followed by machining a counter-bored hole having a flat bottom surface in a surface of the die by means of an end mill as a tool. Then a guide hole is bored in a bottom surface of the counter-bored hole by means of a drill or a reamer as a tool, and a rod hole is bored with the aid of the guide hole as a guide of a gun drill, by means of the gun drill as a tool. Thereafter a shape machining of shaping an intermediate pocket hole is carried out in the surface where the counter-bored hole is formed, as preliminary machining of a core pocket, by means of the end mill as a tool, and a location of the center of the rod hole in the seat surface of the intermediate pocket and a location of the seat surface of the intermediate pocket are measured, followed by measuring a location of a reference point of the rod hole as a reference of machining of the core pocket. Finally a machining program is executed, and the shape machining from coarse machining of the core pocket to finish machining is carried out.
ITO TAKAMASA
FUJITA TAKESHI
USUI MASARU
| JPH05337787A | 1993-12-21 | |||
| JPS57101907A | 1982-06-24 | |||
| JPH11925A | 1999-01-06 | |||
| JP2004216625A | 2004-08-05 | |||
| JP2005034961A | 2005-02-10 |
| WO2000051779A2 | 2000-09-08 |
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma