Woodworking square hole drilling machine and three-blade drill bit

Abstract

The invention relates to the field of woodworking machines, and provides a woodworking square hole drilling machine and a three-blade drill bit. The woodworking square hole drilling machine comprises a lathe bed, a motor, a drive unit and the three-blade drill bit. The drive unit is arranged below the motor and arranged on the lathe bed in a sliding manner in the vertical direction. The drive unit comprises a gearbox and a drill sleeve fixedly arranged below the gearbox. An output shaft of the motor stretches into the gearbox and is meshed with a camshaft through a plurality of gears and a spline shaft. The camshaft penetrates out of the gearbox and stretches into the drill sleeve. A square sleeve is sleeved with the drill sleeve, and a groined guide frame for limiting the movement direction of the square sleeve is fixedly arranged in the drill sleeve. A cam is arranged at the bottom of the camshaft and stretches into the square sleeve. A Reuleaux triangle block is arranged in the square sleeve, and the cam and the Reuleaux triangle block are connected through a cross connector. An output shaft of the Reuleaux triangle block penetrates out of the drill sleeve and is connected with the three-blade drill bit. According to the woodworking square hole drilling machine and the three-blade drill bit, the efficiency for manufacturing a square hole can be improved, labor intensity is lowered, and the precision for machining the square hole is improved.

Description

technical field [0001] The invention relates to the field of woodworking machinery, in particular to a woodworking square hole drilling machine and a three-edged drill bit. Background technique [0002] A woodworking drilling machine is a woodworking machine tool that uses a drill to process through holes or blind holes in a workpiece. The woodworking drilling machine is mainly used for drilling wood, processing round tenon holes and repairing knots. Woodworking mortise and tenon joints are an indispensable connection method for furniture and buildings. At present, the square holes of woodworking products generally adopt CNC engraving, milling processing, and drilling out the surrounding four holes with a drill bit, and then manually remove the remaining material with a chisel. [0003] However, it is not easy to remove the rounded corners by CNC engraving and milling, and the processing cost is high; drilling four holes around the periphery with a drill and then manually r...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems of complex and low-efficiency in making square holes with existing woodworking drilling machines, and proposes a woodworking square hole drilling machine and a three-edged drill bit, which can greatly improve the efficiency of making square holes, reduce labor intensity, and improve the machining accuracy of square holes

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