Workpiece automatic clamping device

Abstract

The invention provides a workpiece automatic clamping device, which is convenient to operate, and the workpiece automatic centering function is realized. The workpiece automatic clamping device comprises a connecting base, a worktable turntable, a main shaft sleeve, an automatic centering disc chuck, a parabolic disc chuck, a plurality of connecting rods and a plurality of positioning claws, wherein the worktable turntable is rotationally arranged above the connecting base; the main shaft sleeve is fixedly arranged below the worktable turntable; the parabolic disc chuck is rotationally arranged on the worktable turntable; the automatic centering disc chuck is fixedly arranged on the worktable turntable; the parabolic disc chuck is provided with arc-shaped involute grooves from the inside to the outside in the radial direction; the connecting rods are hinged to each other end to end; two ends of each connecting rod are respectively a first hinge end and a second hinge end; the first hinge ends are respectively hinged to the involute grooves on the parabolic disc chuck; the automatic centering disc chuck is uniformly provided with long hinge grooves corresponding to the arc-shaped involute grooves in quantity; the second hinge ends are respectively hinged to the long hinge grooves; the positioning claws are respectively arranged above the connected first hinge ends.

Description

[0001] technical field [0002] The invention relates to machining equipment, in particular to an automatic workpiece clamping device. Background technique [0003] When drilling holes on the plane of flanges and tube-sheet parts, it is necessary to fix the flanges and tube-sheet parts on the workbench, and determine the drilling datum of flanges and tube-sheet parts before drilling. At present, in the drilling production of CNC plane drilling machines, a number of T-shaped slots are usually arranged on the bed, and the workpiece is fixed by pressing the flat plate with the tooling, and the center of the workpiece circle is determined by the photoelectric edge finder as the drilling datum. The clamping positions of the workpieces to be processed are different, resulting in different machining reference positions during processing. Before each processing, it is necessary to use a photoelectric edge finder to determine the processing reference of the workpiece. The automatic c...

AI Technical Summary

Problems solved by technology

At present, in the drilling production of CNC plane drilling machines, a number of T-shaped slots are usually arranged on the bed, and the workpiece is fixed by pressing the flat plate with the tooling, and the center of the workpiece circle is determined by the photoelectric edge finder as the drilling datum. The clamping positions of the workpieces to be processed are different, resulting in different machining reference positions during processing. Before each processing, it is necessary to use a photoelectric edge finder to determine the processing reference of the workpiece. The automatic centering function of the workpiece cannot be realized, and the center of the workpiece cannot be aligned with the The center of the processing table is automatically matched, the operation is troublesome, and the processing preparation time is long, which greatly reduces the processing efficiency of the drilling machine

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