Miniature high-precision rotary chuck

Abstract

A miniature high-precision rotary chuck is designed for high-precision rotary chucks with a maximum outer diameter greater than or equal to 30mm and less than or equal to 60mm. The rotating rotor is surrounded by a stationary stator isolated by bearings and limited by a cover. A tapered insertion hole on the top surface of the rotor connects to an air chamber below the rotor. A piston with collet screw holes and a movable base are assembled inside the air chamber. The air chamber opening has an annular groove for locking with a C-type spring. A release nozzle on the stator connects to high-pressure gas, which is sent to the groove on the bottom surface of the piston, pushing the piston and collet upwards to release the workpiece. An actuation nozzle on the stator connects to high-pressure gas, which is sent to the top surface of the piston, pushing the piston and collet downwards to clamp the workpiece. After the C-type spring is removed, the piston and movable base can be directly removed or installed, achieving a design with fewer components and easy assembly or maintenance.

Claims

1. A miniature high-precision rotary chuck, comprising: A cover with several perforations; A stator is provided, with an actuation nozzle connected to an inner surface recessed with an upper arc groove, and a release nozzle connected to an inner surface recessed with a lower arc groove; a rotor is provided, with a bearing mounted on the upper and lower surfaces of the stator's inner surface, and the stator is then fitted onto the rotor; the rotor has several equally spaced long tube holes, with an upper connecting pipe aligned with the upper arc groove above each long tube hole; the rotor also has several equally spaced short tube holes inserted between the long tube holes, with a top connecting pipe aligned with the lower arc groove at the top of each short tube hole; the rotor top... A tapered insertion hole is provided in the center, connecting to a bottom air chamber; the top of the rotor has several first screw holes aligned with the through hole of the cover, and several first screws pass through the through hole and are locked to the first screw holes; the bottom of the air chamber has an annular groove; a piston is assembled into the air chamber, the top of the piston has a collet screw hole, the piston has a branch pipe hole, the top of the branch pipe hole has an upper support hole, the rotor has several crescent grooves corresponding to the upper support hole, connecting to the short pipe hole, and the side of the connection between two crescent grooves can be used for the... A long pipe hole passes through the piston, with one end facing the top surface of the piston. This allows the intake air to push the piston down, pressurizing a collet. A groove is provided on the bottom surface of the piston, which is excavated through the branch pipe hole to allow high-pressure gas to smoothly enter the bottom surface of the piston, causing the intake air to push the piston up to release the pressure of the collet. A movable base is movably sealed to the bottom of the piston in the air chamber. A C-type retaining spring is provided; after the C-type retaining spring is removed, the movable base and the piston can be directly removed or installed. The C-shaped retaining spring is fastened to the ring groove to block the movable base. When air enters from the top or bottom surface of the piston, the movable base will remain under pressure. The top surface of the cover is provided with several second screw holes. A collet anti-rotation ring is provided with several elliptical holes for several second screws to pass through, and the second screws are locked to the second screw holes for fixation. The collet anti-rotation ring has a locking piece protruding inward, which can be locked into one of the elastic grooves on the collet to stop the collet from rotating.

2. The miniature high-precision rotary chuck as described in claim 1, wherein the maximum outer diameter of the miniature high-precision rotary chuck is greater than or equal to 30 mm and less than or equal to 60 mm.

3. The miniature high-precision rotary chuck as described in claim 2, wherein the piston top surface is provided with two limiting holes, and the rotor chamber is provided with two limiting pins corresponding to the two limiting holes, the limiting pins being inserted into the limiting holes to form limiting positions for the piston and the rotor.

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