Tip dresser

Abstract

The invention provides an electrode grinding machine (1), which reshapes electrode heads (4, 5). The electrode grinder (1) includes: a clamp seat (2) that rotates around a rotation axis, and two surfaces of the clamp seat (2) have concave tapered portions (2) centered on the rotation axis. 2c, 2d); and the cutter (3), which is fixed on the holder (2) and only in the part closer to the inside than the outer diameter (D1, D2) of the electrode head (4, 5), The cutter protrudes from the tapered portion (2c, 2d) toward the electrode tip (4, 5) side.

Description

technical field [0001] The present invention relates to an electrode dresser for shaping an electrode tip used in spot welding, and more particularly to an electrode dresser capable of preventing radial runout of the electrode tip during shaping. Background technique [0002] Conventionally, as a dresser for shaping an electrode tip used in spot welding, there is a dresser in which a tool is fixed to a rotating chuck to cut the tip of the electrode tip. [0003] 4 is a cross-sectional view showing a state in which an electrode tip is cut by a conventional dresser. [0004] For example, as shown in FIG. 4 , there is known such an electrode grinder: there are concave tapered surfaces 101 on the upper and lower surfaces of the holder 100, and the cutter 110 is fixed on the holder 100 by screws. In this electrode dressing mechanism, the blade portion 111 of the cutter 110 slightly protrudes from the surface of the tapered surface 101 , and when the holder 100 rotates, the blade...

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned electrode dresser with two cutters, if the diameter, length, and cutting amount of the upper and lower electrode tips are equal, the cutting resistance will cancel each other out, but in fact the conditions are different, so there is no way to suppress the electrode tip. The radial runout problem of

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