Vertical spindle duplex head for a grinder

摘要: A vertical spindle duplex head for a grinder includes an annular pressure wheel and receiver arranged to rotate revolve workpieces between the surfaces of grindstone one end portion driven in opposite directions rotation at their different rotational ratios. The these wheels, thereby grinding face by means around external periphery rotary carrier. are rotatably speeds distributing driving force from source each them variable is provided on transmittance routes extending place both wheel, whereby ratio can be optionally changed.