scraping tool

Abstract

The invention provides a scraping tool. The cutting edge (2a) of the scraping tool (2) has a negative rake angle (α) and a flat surface (4) of appropriate length is formed on the relief surface (3). By forming the negative rake angle, even if the center of the scraping tool (2) deviates from the center of the wire (1), the cutting component force acts in a direction to return the wire (1) to the center of the scraping tool (2). In addition, the flat surface (4) reduces the roughness of the processed surface of the wire material surface generated by the cutting edge, thereby improving the smoothness and improving the surface quality, and suppressing chipping of the cutting edge and tool wear.

Description

technical field [0001] The present invention relates to a shaving tool for peeling (shaving) the surface of the wire used in the manufacturing process of the wire used for suspension bridge cables, springs, and the like. Background technique [0002] On the surface of the wire rod after the hot rolling process, especially the steel wire rod, there are many irregularities due to defects such as scale and rolling flaws remaining. In order to smooth the surface of such a wire rod and improve the quality of the surface, the surface layer of the wire rod is often removed by cutting off the entire circumference of the wire rod with a die-shaped scraping tool (for example, refer to Patent Documents 1 and 2). [0003] 【Prior technical literature】 [0004] 【Patent Literature】 [0005] [Patent Document 1] Japanese Patent Laid-Open No. 2007-283432 [0006] [Patent Document 2] Japanese Patent Application Laid-Open No. 5-228729 [0007] In the wire scraping method disclosed in Patent...

AI Technical Summary

Problems solved by technology

[0010] However, in the scraping method disclosed in Patent Document 1, a forced cooling device that sprays coolant directly to the cutting edge of the die is required, so the device is complicated.

Patent Document 2 mainly discloses the blade edge shape of a scraping die for relatively soft metal wires such as copper and copper alloys from the viewpoint of tool wear, but it is not a structure for steel wire materials harder than copper and copper alloys.

In addition, no consideration is given to the smoothness of the cut surface after shaving

[0011] In the process of cutting and removing the surface layer of the wire rod with the above-mentioned scraping tool, chips may be generated on the edge of the scraping tool due to the influence of residual scale and surface unevenness

When a chip is formed on the edge of the blade, processing flaws (cutting flaws) remain on the surface of the wire rod, and the processing force (cutting force) acting on the edge of the blade increases, so tool wear progresses significantly, and there is a problem that tool life is shortened

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