Multi-blade type electrode cap grinding knife rest

Abstract

The invention discloses a multi-blade type electrode cap grinding knife rest. The multi-blade type electrode cap grinding knife rest comprises a solid ladder shaft and is mainly and technically characterized in that two lock lugs are mounted on a small-diameter shaft extending position of the solid ladder shaft, with the circular center of the solid ladder shaft as the standard, a base circle concentric with the circle center of the solid ladder shaft is mounted in the solid ladder shaft, chip removal holes penetrating into the solid ladder shaft are evenly distributed in the base circle outwards in an array manner, knife bodies are evenly distributed on the contour line of the base circle in an array manner, gamma included angles are formed between main blades of the knife bodies and thecenter line of the solid ladder shaft, front blade angles of beta included angles are formed on the knife bodies, and auxiliary blades are derived along the shapes of the main blades. The knife rest has the beneficial effects that uneven cutting force can be overcome, cutting force is reduced, the blade angle is improved, the blades are more sharp, vibration generated by cutting can be removed, blade collapsing can be avoided, the service life is prolonged, the electrode cap grinding quality is improved, the grinding knife rest and the blades form a whole structure, replacing and mounting areconvenient, and the replaced knife rest can be repeatedly used after grinding and correcting.

Description

technical field [0001] The invention relates to a grinding tool holder, in particular to a multi-edged electrode cap grinding tool holder. Background technique [0002] The resistance welding machine uses the electrode cap to participate in the welding of metal parts. The electrode cap is used as a vulnerable part. During the welding process, the main forms of failure are plastic deformation, surface alloying and recrystallization, and adhesion, resulting in reduced electrode life. Since the material of the electrode cap is copper-based alloys such as pure copper, chrome-zirconium copper, silicon-nickel copper, etc., the cost is expensive, and it is usually used again after being repaired by a grinding tool holder. [0003] At present, the existing electrode cap grinding tool holder is disassembled and assembled. It is more common to pack the cutter in a single-edged manner. The alloy blade or high-speed steel blade is embedded in the fan-shaped hole. This structure is low ...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing electrode cap grinding tool holder is disassembled and assembled. It is more common to pack the cutter in a single-edged manner. The alloy blade or high-speed steel blade is embedded in the fan-shaped hole. This structure is low in cost, but the electrode cap receives the cutting force from a fixed blade during grinding, so the grinding time is long, the cutting force is uneven, and the surface of the electrode after grinding Roughness causes uneven solder joints of the workpiece, and it is difficult to guarantee the welding strength

[0004] The Chinese patent with the application number CN201920808540.0 discloses an electrode grinding tool, which is also a split structure. Although the knife set adopts an integral structure, the blade adopts a single-sided cutting structure, and the side of the cutting edge is the same as the After the side walls of the adjacent blades are connected together, the blades and the side walls are in a straight line structure. When the blade with this structure is used to repair the alloying and recrystallization of the surface of the electrode cap and the form of adhesion failure, due to the adhesion of the alloy on the surface of the electrode cap The layer of chemicalized and recrystallized substances, the surface is hard and increases the cutting force of the blade, and vibration will be generated during grinding, resulting in the phenomenon of "chipping" of the blade and making the knife set unusable

Although springs are provided in the through grooves on both sides of the outer end of the blade, the two ends of the spring are respectively pressed against the outer end of the blade and the cover plate, and when the blade is axially stressed, the blade slides properly to the other end by means of The spring buffers the cutting force and vibration impact force, but when the blade slides, it will make the surface of the ground electrode rough, resulting in uneven solder joints of the workpiece and difficult to guarantee the welding strength

[0005] In addition, the structural feature is that it is assembled with multiple parts, which needs to be disassembled and disassembled to replace the knife set, which is inconvenient to replace

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