GRINDSTONE DRESSING TOOL PROTECTION DEVICE

摘要

Grinding machine comprises rotatably mounted grindstone and rotatable grindstone dressing device having axis of rotation parallel to axis of grindstone. Protector shield is mounted between dressing tool and grindstone for protecting dressing tool at all times except during actual dressing operation of grindstone. Motivator moves protector shield into and out of alignment with dressing tool and grindstone so that dressing tool is protected by shield when shield is positioned between tool and grindstone.