To provide a valve hole machining apparatus for vehicular wheel rim capable of accurately forming a valve hole in a desired valve hole punching position even in a wheel rim of different types.
A position adjusting body 40 disposed so as to be movable back and forth in the horizontal direction with respect to a hole opening die 31 is defined as a predetermined anteroposterior position, and the inner surface of the wheel rim 2 supported such that a valve hole punching position X is along in the horizontal direction by a rim supporting means is brought into contact with an abut tip part 43 of the position adjusting body 40, thereby positioning the valve hole punching position X of the wheel rim 2 on the hole opening die 31. This can accurately position the valve hole punching position X on the hole opening die 31 only by setting the position adjusting body 40 at the predetermined anteroposterior position according to the type of the wheel rim 2, thereby accurately forming the valve hole 7 in the wheel rim 2 of various types.
JPS62183926A | 1987-08-12 | |||
JPH08290221A | 1996-11-05 | |||
JPS6224825A | 1987-02-02 | |||
JPH0988999A | 1997-03-31 | |||
JPH0760377A | 1995-03-07 |
Yasutoshi Iwata
Yu Yamamoto
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