Self-centering clamping device of drill press workpiece

Abstract

The invention provides a self-centering clamping device of a drill press workpiece. The device can realize the self-centering function for a workpiece. The device comprises a connecting base, a workbench rotary disc, a main shaft, a parabola self-centering flower disc, a plurality of connecting rods and a plurality of positioning pawls, wherein the workbench rotary disc can be arranged above the connecting base in a rotary way, the main shaft is fixedly arranged below the middle part of the workbench rotary disc, the parabola self-centering flower disc can be arranged below the workbench rotary disc on the main shaft by a transmission mechanism in a rotary way, arc-shaped gradually slotting grooves are uniformly formed in the parabola self-centering flower disc in the radial direction, the head of one connecting rod is hinged to the end of the other connecting rod, both ends of each of the connecting rods are respectively a first hinging end and a second hinging end, the first hinging ends are respectively hinged to the arc-shaped gradually slotting grooves on the parabola self-centering flower disc, long hinging grooves corresponding to the positions of the peripheral sides of the arc-shaped gradually slotting grooves are respectively formed in the parabola self-centering flower disc, the second hinging ends are respectively hinged to the long hinging grooves in a hinge way, and the positioning pawls are respectively arranged above the second hinging ends of the connecting rods.

Description

technical field [0001] The invention relates to machining equipment, in particular to a self-centering clamping device for drilling machine workpieces. Background technique [0002] 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 workpiec...

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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