Cutter and manufacturing method thereof for machining wooden counterbore

Abstract

The invention discloses a cutter for machining a wooden counterbore. The cutter comprises a base and a hard alloy blade, the hard alloy blade is elongated, a wedge-shaped structure in the thickness direction is arranged at the tail end of the hard alloy blade, the wedge-shaped structure is provided with a straight edge and an arris edge, two identical half cylinders with inner cylndrical surfaces form the base, sections of the half cylinders, which are perpendicular to the axial direction, are provided with a countersunk through hole and a screw hole, a screw can penetrate trough the countersunk through hole to integrate the other half cylinder to form a cylinder with an inner hole, a vertical column is arranged on the base, an axial welding surface is mounted on the vertical column, a positioning groove is disposed on the base along the welding surface, the hard alloy blade is welded on the welding surface of the vertical column, the wedge-shaped structure is inserted into the positioning groove of the base, and the straight edge of the wedge-shaped structure is tightly attached to the welding surface of the vertical column. The blade is accurately positioned on the base, the blade is prevented from displacing during high temperature heating and welding flux addition, the product quality is improved, the product percent of pass is substantially increased, and the product percent of pass is improved from less than 10% to above 98%.

Description

technical field [0001] The invention relates to a woodworking tool, in particular to a hard alloy woodworking tool. Background technique [0002] With the improvement of people's living standards, the quality requirements of furniture are getting higher and higher, not only requiring novel and beautiful styles, but also requiring high safety. In the production of mechanized furniture, a large number of wood screws are used, and the exposed heads of the wood screws are not only unsightly, but also have potential safety hazards. In order not to expose the head of the wood screw, regardless of the panel or solid wood furniture, the counterbore of the wood screw must be processed in the place where the wood screw is used. Very large, generally countersunk drills are used in conjunction with woodworking drills to process countersink holes while processing screw holes. Carbide blades have high hardness and wear resistance, but are expensive. Generally, carbide blades are welded ...

AI Technical Summary

Problems solved by technology

Nowadays, the cemented carbide blade is generally directly welded on the substrate. The position of the blade is determined by the naked eye observation of the operator, and the correct position of the blade cannot be guaranteed. In addition, welding causes thermal deformation, and the rate of qualified products is low, which often makes the countersunk tool not compatible with screw hole drill for use

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