Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Shinji Hoshino

Tadashi Goto

Toshiharu Nakajima

Hiroshi Ohtani

Satoru Machimura

Toshitaka Mochizuki

A tip dresserdresses electrode tipsThe tip dresseris rotated around a rotation axis and includes a holderconfigured to be rotated around a rotation axis and to have concave tapers,, which make the rotation axis a center, on both faces of the holderand a cutterconfigured to be fixed to the holderand to be protruded to sides of the electrode tipsfrom the tapersonly at portions of the cuttermore inside than outer diameters D, Dof the electrode tips

Tip dresser

In order to prevent an electrode tip 8 from being burred during dressing process, thereby attaining high quality and stability of the electrode tip, a tip dresser features a screw-threaded circumference 5 formed around the rotatable cutter holder 1 for securing a one- or two-piece formed cutter element 2, for permitting the holder 1 to be rotated in one direction A manually or by a suitable driver. Frusto-conical recesses are symmetrically formed in both sides of the holder 1 for receiving the electrode tips, allowing the cutter element 2 to be mounted so as to slightly extend by a predetermined amount beyond the conically recessed surface. Another feature is in the form of apertures 6 and 7 provided through the holder 1 for discharging the cutting chips: one aperture 6 formed on the forward front side of the rotating direction of one machining edge 2a for the bevel surface of electrode tip 8, and another one 7 on the forward front side of rotating direction of another machining edge 2b for the end surface machining. The aperture 6 is formed along the edge 2a, and aperture 7 is formed so as to reach at least the boundary between the bottom and the conical side surface of each of the frusto-conical recesses.

An improved tip dressing process is provided wherein the pressure between the electrode tip of a resistance welder and the cutter of a tip dresser is varied during the tip dressing process. A pressure controller is also provided for controlling the pressure between the electrode tip and cutter during the tip dressing process. The pressure controller may be applied to independently control the tip dressing process of several resistance welders simultaneously.

Pressure controller and pressure control method for resistance welder

In an electrode tip dressing apparatus, a relatively weak pressure is applied on an electrode tip at the electrode setting, then a strong pressure is applied at finishing, and finally a lowered pressure is applied after a predetermined time period. The blade holder is provided with a clearance over the entire length of the blade for discharging the chips produced during machining of the electrode tip, thereby preventing blinding of blades caused by cutting chips.

Dressing apparatus for an electrode tip

The present invention is directed to presenting rotative cutting tool of tip dresser. The blade to cut and repair side surface and/or edge surface of welding electrode tip is mounted in the holder with first tapered portion having the same angle of the blade to cut side surface of the electrode tip and second tapered portion having angle a little different from the first tapered angle in a recess of frustconical shape of the holder, said holder being provided with empty space so as to expel every cut powder of electrode tips generated in cutting and repairing operation from the recess of frustconical shape of the holder and tip of the blade has a small roundness or chamfer finishing.

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Suzuka, Japan

Shinji Hoshino