Patent ID: 7252462

Claim:
A spindle unit having a pressure foot, comprising: a body; a spindle mounted rotatably within said body and movably along an axis; retaining means mounted at one end of said spindle for removably retaining a machining tool for machining workpieces; holding means rotatably connected with said spindle and provided within said body movably along the axis; linear driving means for moving said holding means together with said spindle along the axis to move said machining tool closer to or apart from the workpiece; rotary driving means provided within said body for rotating said spindle; pressure foot means disposed forward of an edge of said spindle for pressing down the workpiece; pressing means for connecting said holding means and said pressure foot means so as to be relatively movable by a predetermined degree and for pressing said pressure foot means in a forward direction; and resilient means provided between said body and said holding means for forcing said holding means in a rearward direction, the rearward direction being opposed to the forward direction.