Importance

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Abstract

The present invention provides a five-simultaneously-working-axis computerized numerical control tooth cutting machine tool for toroidal worms, including: a body of the machine tool and a controlling cabinet, the body includes: a bed, a spindle box with a spindle, a longitudinal sliding table, a traverse slider, a vertical guideway mounted on the slider, and a tailstock, a cutter rest that supports a rotating cutter head is mounted on the vertical guideway, the spindle rotates about A-axis thereof, the table longitudinally slides relative to the bed along Y-axis, the cutter head rotates about B-axis thereof and traversely shifts along X-axis, as well as the cutter head makes up/down shift along Z-axis of the guideway vertically, the control cabinet is equipped with programs for controlling spindle rotation and the programs for controlling the shitting along longitudinal, traverse and vertical directions as well as the rotation of cutter head so as to make the movements about or along the five axis of A, Y, X, Z and B simultaneously work together to control the shitting of cutting edge of the cutter on the cutter head relative to the workpiece and simulate an inclined plane in spatial locations in order to envelop out the tooth flank of plane enveloping toroidal worms. The effect of this invention shows that the rotating speed of cutter shaft and workpiece shaft can make the cutting velocity up to 200 m/min, and the working efficiency is six to seven times higher than that of worm grinding, the productivity can be improved greatly.

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First Claim