Cutting tip replacement type rotary tool

Abstract

Provided is a tip replacement type rotary tool in which the cutting resistance can be reduced while maintaining a high chipping resistance of a main cutting edge formed on an insert and which is suitable for a highly efficient high-feed cutting. A tip replacement type rotary tool has an insert which is detachably attached to a rotary tool body and which is in the form of a polygonal planar plate or a circular plate in a plan view. The insert is provided with a negative honing and a land, on a rake surface of a main cutting edge of the insert, and a round corner cutter on a corner portion of the insert. When the insert is attached to the rotary tool body, the main cutting edge of the insert defines the lowermost point in the rotation axis direction of the rotary tool body, and the width of the negative honing or the widths of the negative honing and the land are gradually increased from the lowermost point toward the outer peripheral side direction with respect to the rotation axis direction of the rotary tool body, whereby the cutting resistance can be reduced while maintaining a high chipping resistance of the main cutting edge.

Description

technical field [0001] The present invention relates to an insert-replaceable rotary tool suitable for high-feed machining that can reduce cutting resistance while maintaining the chipping resistance of a main cutting edge, and is suitable for high-feed machining. Background technique [0002] In general, when manufacturing various molds by molding, on the tool body of the cutting tool, a polygonal shape such as a rhombus or a roughly parallelogram in plan view, or a plate-like cutting shape such as a circular shape (circular shape) is mounted. Any of inserts (insert inserts) that perform high-feed processing on mold blanks as processing materials. [0003] As described above, when high-feed machining is performed on a material to be processed using an insert-replaceable rotary tool equipped with a cutting insert, problems such as chipping tend to occur on the cutting edge of the cutting insert. Therefore, in order to prevent problems such as chipping on the cutting edge of...

AI Technical Summary

Problems solved by technology

[0003] As mentioned above, if high-feed machining is performed on a material to be processed using an insert-replaceable r

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