One-step forming combined tool of curved surface for plastic boards

Abstract

The invention relates to a one-step forming combined tool of curved surface for plastic boards. A bit of the tool comprises a main cutting edge, a curve cutting edge and a safety slant edge. The main cutting edge is longitudinally vertical. A start of the arc cutting edge locates at the upper end of the main cutting edge. A start of the safety slant edge locates at an end of the arc cutting edge. The safety slant edge and the horizontal plane form an included angle. A work piece can be cut into independent size parts by the main cutting edge. The design of the arc cutting edge fully meets the design requirements of the curved surface; the design of intact transition between the safety slant edge Z3 and the arc cutting edge Z2 allows the curved part of the front surface of the finished work piece well intersects the plane part, with no intersecting mark occurring. The bit part for cutting is made of PCD material; one-cut forming can still be achieved even when the horizontal length of the curved part of the work piece is far larger than the radius of a tool handle, and the curved surface of the work piece can be smooth with no cut.

Description

technical field [0001] The invention relates to a non-standard cutting tool used by a CNC numerical control machine tool, in particular to a one-time forming combination cutting tool for processing arc surfaces on plastic plates. Background technique [0002] Parts such as processing mobile phone decorations, due to the high-precision size of the product and its special appearance requirements, can only be completed with non-standard tools used in CNC machine tools. At present, in order to achieve the smooth appearance effect of 2.5D curved surface in the industry, there are applications on glass materials and the use of injection molding technology to achieve it. However, to achieve 2.5D curved surface effects on glass materials, both raw materials and processing costs are too high, while injection Although the process can achieve the curved surface effect, the product surface performance, some special decorative effects and precision often fail to meet customer requirement...

AI Technical Summary

Problems solved by technology

In the cutting of raw materials, such as mobile phone lenses and decorative structural parts of plastic sheets, the CNC cutting tools are usually used for forming and cutting elevations, planes and bevels. The main purpose is to cut out the shape of the product, and it is difficult to achieve special radians through such tool processing The appearance surface of the effect, that is, it is impossible to process a curved appearance surface without knife lines and a certain gloss effect on plastic materials

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