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Drill and method for producing cut article

A technology of drill bit and cutting part, which is applied in the direction of manufacturing tools, metal processing equipment, boring machine/drilling machine parts, etc., and can solve problems such as defects

Active Publication Date: 2020-09-11
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the head replaceable drill described in Patent Document 1, the groove in the head intersects the support surface approximately perpendicularly to form a ridge line, so stress concentrates on the ridge line during cutting, and chipping may occur.

Method used

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  • Drill and method for producing cut article
  • Drill and method for producing cut article
  • Drill and method for producing cut article

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0022] Hereinafter, the drill bit of the embodiment will be described in detail with reference to the drawings. However, for the convenience of description, the drawings referred to below simply show only the main components of the components constituting the embodiment. Therefore, the drill can be provided with arbitrary structural members that are not shown in the drawings that are not referred to in this specification. In addition, the dimensions of the members in each figure do not faithfully represent the dimensions of the actual constituent members, the ratio of the dimensions of each member, and the like.

[0023] The drill bit 1 of the embodiment is in figure 1 In the example shown, it is a cylindrical shape extending from the first end 1a to the second end 1b. The drill 1 of the present disclosure has a cutting portion 3 located on the side of the first end 1a and capable of rotating about the rotation axis X as a center. The cylindrical drill 1 is used for the cutting...

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PUM

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Abstract

A drill of one embodiment extends from a first end to a second end. A cutting section includes a cutting edge located at a first end side, a groove extending from the cutting edge toward the second end, an end surface located more to a second end side than the groove, and a connecting surface that is located between the groove and the end surface and is connected to the groove and to the end surface. The connecting surface includes a first site where the length in the direction along an axis of rotation is longest, and a second site located more to an outer peripheral side of the cutting section than the first site. The length in the direction along the axis of rotation at the second site is shorter than the length in the direction along the axis of rotation at the first site when viewed from a first direction orthogonal to the axis of rotation so that the first site and the axis of rotation overlap.

Description

[0001] Cross-reference of related applications [0002] This application claims the priority of Japanese Patent Application No. 2018-003201 filed on January 12, 2018, and incorporates all the disclosures of this earlier application for reference. Technical field [0003] This method relates to a manufacturing method of a drill and a cutting product. Background technique [0004] There is known a head replaceable drill described in, for example, Japanese Patent Application Laid-Open No. 2016-55353 (Patent Document 1) as a head having a head and a tool holder, and the support surface of the head is in contact with the end surface of the tool holder. A sub-replaceable drill bit, wherein the head includes a cutting edge, a supporting surface, and a groove extending from the cutting edge to the supporting surface. [0005] In the head replaceable drill described in Patent Document 1, the groove in the head intersects the support surface substantially perpendicularly to form a ridgeline. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/00
CPCB23B2251/02B23B51/02B23B2251/087B23B2251/127B23B2251/40B23B2251/50B23B51/0002B23B51/0003
Inventor 波多野弘和河岛宏司
Owner KYOCERA CORP