CN301306733S - Compound drill (two steps) - Google Patents

Compound drill (two steps)

Info

Publication number
CN301306733S
CN301306733S CN200930273285.6F CN200930273285F CN301306733S CN 301306733 S CN301306733 S CN 301306733S CN 200930273285 F CN200930273285 F CN 200930273285F CN 301306733 S CN301306733 S CN 301306733S
Authority
CN
China
Prior art keywords
steps
drill
compound drill
compound
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200930273285.6F
Other languages
Chinese (zh)
Inventor
黄丹平
熊小文
徐其军
吴军平
李慧敏
陈绍金
冯树华
Original Assignee
南昌硬质合金有限责任公司
Filing date
Publication date
Application filed by 南昌硬质合金有限责任公司 filed Critical 南昌硬质合金有限责任公司
Application granted granted Critical
Publication of CN301306733S publication Critical patent/CN301306733S/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

复合钻头(二台阶)顶角，根据不同的被加工材料，进行不同的选择，二台阶角度，采用芯厚消薄处理，增加钻头的自定心能力。 The top angle of the composite drill bit (two-step) can be selected according to different materials to be processed. The two-step angle adopts core thickness reduction treatment to increase the self-centering ability of the drill.

CN200930273285.6F 2009-12-23 Compound drill (two steps) Expired - Fee Related CN301306733S (en)

Publications (1)

Publication Number Publication Date
CN301306733S true CN301306733S (en) 2010-08-11

Family

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD859483S1 (en) 2016-12-06 2019-09-10 Milwaukee Electric Tool Corporation Drill bit
US11285632B2 (en) 2018-03-21 2022-03-29 Milwaukee Electric Tool Corporation Auger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD859483S1 (en) 2016-12-06 2019-09-10 Milwaukee Electric Tool Corporation Drill bit
USD923674S1 (en) 2016-12-06 2021-06-29 Milwaukee Electric Tool Corporation Drill bit
USD1007546S1 (en) 2016-12-06 2023-12-12 Milwaukee Electric Tool Corporation Drill bit
US11285632B2 (en) 2018-03-21 2022-03-29 Milwaukee Electric Tool Corporation Auger
US11850767B2 (en) 2018-03-21 2023-12-26 Milwaukee Electric Tool Corporation Auger

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Legal Events

Date Code Title Description
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100811

Main classification number: 08-01

Termination date: 20151223