werkstückzustelleinrichtung for a machine tool with rotating tool for working of gears

摘要

PURPOSE:To improve grinding accuracy by detecting a mating state between a whetstone and a gear to be processed as a quantity of electricity, and avoiding the use of a tooth of a gear corresponding to a maximum amount of electric power. CONSTITUTION:The captioned device includes a driving source for tool 34 for rotating a rotary tool 36, a driving source 22 for work that is connects to a work 20 via a clutch mechanism and allows the work 20 to be rotated, a detecting circuit 54 that is connected to the driving source for tool 34 and detects an increase of a load against said driving source 34, and a cricuit for energyzing the clutch mechanism 48 while delayed from the time of a prescribed increase of the load detected by said detecting circuit 54. Provided from the time a driving current of a whetstone motor 34 becomes a maximum, a corresponding tooth of a gear 20 is slightly displaced, and the clutch 48 is thrown in with synchronization therewith, mating between the whetstone 34 and the gear 20 is avoided, enabling a gear grinding machine to be obtained, which can provide a proper grinding margin.