Lower blade of self-locking slitting disc knife and machining method of lower blade

Abstract

The invention discloses a lower blade of a self-locking slitting disc knife and a machining method of the lower knife, and belongs to the technical field of cutting tools. The lower blade comprises anannular blade body, the annular blade body is provided with a cutting edge, the angle a of the cutting edge of the annular blade body is 81-83 degrees, the value of degrees of a is an integer, and the width of the cutting edge is 10-15 mm; the inner side of the annular blade body is provided with an eccentric groove, the eccentric groove is internally provided with balls and an eccentric washer,and the central axis of the annular blade body is not in the same straight line with the central axis of the eccentric groove. The blade and a knife shaft rotate relatively in the circumferential direction, the balls are tightly clamped in place under the eccentric effect of the eccentric washer and tightly abut against the eccentric washer in the eccentric groove, the blade can be firmly fixed onthe knife shaft, the runout value of the end face of the blade is 0.005 mm, it is ensured that the slitting precision of a slitting machine meets production requirements, mutual overlapped collisionof upper and lower blade bodies in the high-speed rotation process is avoided, the blade is protected from damage, and the blade of the structure is easy to disassemble from the knife shaft.

Description

technical field [0001] The invention belongs to the technical field of cutters, and more specifically relates to a self-locking cutting disc cutter and a processing method thereof. Background technique [0002] With the rapid development of the market, the blade industry has higher and higher requirements for blades, which are the most commonly used cutting tools for slitting, cutting, and its quality is closely related to processing technology. Important meaning, most of the detailed parameters of the blade, these parameters determine the processing ability and cutting performance of the tool. Slitting machine blades are mainly used for slitting metal, film, paper, cigarettes, leather, printing, etc., which use stable high-speed cutting tool steel 9CrSi, SKD, SKH, T10, 6CrW2Si, Cr12MoV, LD, H13, W18Cr4V, etc. The material, after a complete set of vacuum heat treatment process, has uniform hardness and is made by precision machining. The blade cut is smooth and flat, and th...

AI Technical Summary

Problems solved by technology

[0007] At present, when the end face of the lower blade jumps more than 0.01mm, it will cause the upper and lower blades to overlap and collide with each other intermittently during high-speed rotation. After the collision, it is very easy to cause the blade to break, the upper blade and the lower blade are damaged, and the frequency of replacement high cost, the problem of increased cost, the purpose of the present invention is to provide a self-locking cutting disc knife lower knife, simple structure, easy to disassemble the disc lower knife on the knife shaft, and the disc lower knife can be locked on the knife On the shaft, the runout value of the end face of the blade is 0.005mm, which ensures that the cutting accuracy of the slitting machine meets the production requirements, avoids overlapping and collision of the upper and lower blades during high-speed rotation, and protects the blades from damage

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