APPARATUS AND METHOD FOR RACK PRODUCTION

摘要

PROBLEM TO BE SOLVED: To produce a double-pinion rack bar having two tooth parts without use of a special processing apparatus for formation of the two rack tooth parts.SOLUTION: A rack production apparatus comprises a clamp mechanism 110 supporting a first rack bar 12A formed with a first tooth part in a hollow shank, a chuck mechanism 140 supporting a second rack bar 12B formed with a second tooth part in a solid shank so that the shaft center line C2 of the second rack bar matches the shaft center line C1 of the first rack bar 12A, a table mechanism 120 causing the chuck mechanism 140 to approach the clamp mechanism 110 and a rotation drive portion 130 rotating the chuck mechanism 140 around the shaft center line C2 relative to the clamp mechanism 110.