| 摘要 |
The present invention, the objective of which is to provide a forming apparatus for forming part of or the entire circumference of a cylindrical work piece into circular or deformed circular shape, such as ellipse, etc., comprises a spindle mechanism having a processing tool R mounted at the tip of the spindle, and a holding mechanism for holding the cylindrical work piece W disposed in a way to face the spindle mechanism, and is provided with an axial shifting means for shifting the spindle mechanism and the holding mechanism relatively in the axial direction of the spindle, a shifting motion means for enabling the holding mechanism to make prescribed shifting motion, and a control mechanism for driving the axial shifting means and shifting motion means in linkage with each other.
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