Locating device for annular workpiece

Abstract

The invention discloses a locating device for an annular workpiece. The locating device comprises a bottom disk; three sliding grooves I uniformly distributed with respect to a circle center of the bottom disk are formed in the bottom disk; clamping blocks I connected in a sliding manner are arranged in the sliding grooves I; three fixing seats are further arranged on the bottom disk; rotating rods are arranged on the fixing seats; pressure rods I are arranged at the upper ends of the clamping blocks I; pressure heads I are arranged at the lower ends of the pressure rods I; supporting faces Iare arranged below the pressure heads I; a disk body is arranged in the center of the bottom disk; sliding grooves II are formed in the upper end of the disk body; clamping blocks II are arranged in the sliding grooves II; pressure rods II are arranged at the upper ends of the clamping blocks II; pressure heads II are arranged at the bottoms of the pressure rods II; outer tapered bulges are arranged on the outer sides of the clamping blocks II; inner tapered bulges are arranged on the inner sides of the clamping blocks II; supporting faces II are arranged on the bottom faces of the inner sidesof the clamping blocks II; plane thread teeth are formed at the bottoms of the clamping blocks II; the interior of the disk body is connected with a disk wire in a sleeved manner; and four bevel gears are arranged in the disk body. The locating device is wide in part clamping scope, errors due to edge deflection of a part with the relatively large diameter can be eliminated effectively, the machining on all the positions of the part can be achieved, and the locating device has the very good generalization property.

Description

technical field [0001] The invention relates to the field of fixtures, in particular to a positioning device for circular ring workpieces. Background technique [0002] For circular workpieces such as flanges, three-jaw chucks are generally used for clamping and fixing, but the clamping of circular workpieces by three-jaw chucks has certain limitations. The three-jaw chuck completes the clamping by clamping the side wall of the workpiece. fixed, but at the same time it is impossible to process the side of the workpiece, and the three-jaw chuck is only suitable for some workpieces with small diameters. For workpieces with large diameters and small thicknesses, the workpiece is prone to skew when clamping, which affects processing. precision. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a positioning device for circular ring workpieces, so as to solve the above-mentioned multiple defects in the prior art. [0...

AI Technical Summary

Problems solved by technology

[0002] For circular workpieces such as flanges, three-jaw chucks are generally used for clamping and fixing, but the clamping of circular workpieces by three-jaw chucks has certain limitations. The three-jaw chuck completes the clamping by clamping the side wall of the workpiece. fixed, but at the same time it is impossible to process the side of the workpiece, and the three-jaw chuck is only suitable for some workpieces with small diameters. For workpieces with large diameters and small thicknesses, the workpiece is prone to skew when clamping, which affects processing. precision

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