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rotary cutting tool

A technology of cutting tools and tools, which is applied in the direction of manufacturing tools, metal processing equipment, milling machine equipment, etc., and can solve problems such as unavoidable processing

Active Publication Date: 2017-11-28
UNION TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, it is generally unavoidable to start processing from a normal temperature state, and when gas cutting is introduced due to the processing program, since the tool and the material to be cut are cooled at this time, the actual situation is that the above-mentioned problems cannot be solved by the above-mentioned method

Method used

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Embodiment Construction

[0044] Preferred embodiments of the present invention will be briefly described to express the action of the present invention with reference to the drawings.

[0045] There is a convex edge 7 on the bottom edge 5, and the convex edge 7 is a part that mainly realizes the cutting action (mainly in contact with the plane processing surface) during surface machining. Even if the front corner of the tool is damaged, it is not easy Contact with the damaged front end corner causes chipping of the flat machined surface or the like.

[0046] That is, even in the case where the bead 7 is provided, damage occurs from the sharper front end corner, but since the bead 7 is mainly in contact with the flat surface, it is suppressed as much as possible from the damaged front end corner. contact, and even if gnawing occurs on the plane processing surface in contact with the damaged front end corner, the convex edge 7 that protrudes further to the plane processing surface side can be removed by...

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Abstract

The present invention provides a rotary cutting tool capable of finishing a machined surface into a smooth and glossy surface. The rotary cutting tool is provided with a plurality of chip flutes (2) on the outer periphery of the front end of the tool body (1) from the front end of the tool to the base end of the tool, and on the rake face (3) of the chip flutes (2) Bottom edges (5, 6) are respectively integrally provided with the tool body (1) on the intersecting ridgelines between the secondary flanks (4) of the tool body (1), and the bottom edges At least one of (5, 6) is formed with a convex edge (7) protruding toward the front end side in the tool axis direction, and the convex edge (7) is formed by connecting a plurality of substantially linear straight edges. .

Description

technical field [0001] The present invention relates to rotary cutting tools. Background technique [0002] Due to the low price of carbon steel for mechanical structure in steel, it is mostly used for component processing or molded base. [0003] However, when such a carbon steel material is cut with a general square end mill capable of face cutting and side cutting disclosed in Patent Document 1, for example, the gap between the bottom edge and the peripheral edge as the cutting edge The corners of the front ends of the connected parts are damaged, resulting in gnawing (むしれ) on the flat processed surface, or deep scratches on the flat processed surface. [0004] In addition, the same problem as above occurs due to the so-called structural cutting edge in which the workpiece adheres to the cutting edge of each cutting edge and exerts a cutting action. Specifically, over-cutting of the machined surface due to the growth of the structural edge generated on the cutting edge,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C5/10
CPCB23C2210/082B23C2210/086B23C2210/285B23C2210/287B23C2210/325B23C2220/28B23C5/10B23C2210/0457B23C2210/54B23C2210/0428B23C2210/28B23C2222/84
Inventor 高桥昭一佐藤望
Owner UNION TOOL