CN201988772U - Drill for machining step holes - Google Patents

Drill for machining step holes Download PDF

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Publication number
CN201988772U
CN201988772U CN2010206286372U CN201020628637U CN201988772U CN 201988772 U CN201988772 U CN 201988772U CN 2010206286372 U CN2010206286372 U CN 2010206286372U CN 201020628637 U CN201020628637 U CN 201020628637U CN 201988772 U CN201988772 U CN 201988772U
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CN
China
Prior art keywords
drill
fraction
drill bit
face
bored
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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
CN2010206286372U
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Chinese (zh)
Inventor
单小宁
Original Assignee
单小宁
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 单小宁 filed Critical 单小宁
Priority to CN2010206286372U priority Critical patent/CN201988772U/en
Application granted granted Critical
Publication of CN201988772U publication Critical patent/CN201988772U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the field of machining tools, in particular to a drill for machining step holes, which is specially used to machine countersinks and multi-step holes. The drill comprises a drill handle, a drill neck, a drill body and a drill bit, wherein the drill bit is arranged at the end part of the drill body; the drill neck is arranged between the drill body and the drill handle; the drill body consists of a plurality of sub-drill bodies; the diameter of each sub-drill body gets gradually larger from the drill bit to the drill neck; the drill bit is conical; a main cutting edge is arranged on the conical surface of the drill; an end cutting edge is arranged on the end surface of each sub-drill body; and an auxiliary cutting edge is arranged on the circumferential surface of each sub-drill body. The drill has the advantages of simple and practical structure, simplicity as well as convenience and quickness in machining countersinks and other step holes, and is free of secondary machining, so that the production cost is saved, and the production efficiency is improved.

Description

The processing step hole drill bit
Technical field
The utility model relates to the tool for mechanical machining field, especially a kind of processing step hole drill bit that is exclusively used in processing counterbore and multi-stage stepwise stepped hole.
Background technology
Counter bore bit on the present market, it mainly is spiral bit, its structure has drillstock and drill bit, the processing counterbore needs two drill bits, at first be that the little drill bit of diameter is holed earlier, change the big drill bit of diameter then into and carrying out reaming processing near opening part that such mode bothers, need more bit change, the waste working time, and the fluted drill drill bit is top tapered, and the step surface of that counterbore just can not be smooth, can not be fastening after screw is installed, it is smooth also to need other drill bit to carry out, and the operation trouble is especially when needs are processed multistage stepped hole, need to change more drill bit and process, waste time and energy more.
Summary of the invention
The purpose of this utility model is the weak point that exists in the above-mentioned technology, proposes a kind of processing step hole drill bit, and the brill body that it has a multistage different-diameter directly will need the stepped hole one-shot forming of processing, and step is smooth.
The technical scheme that realizes the utility model purpose is as follows:
The processing step hole drill bit, it comprises drillstock, drill neck and bores body and drill bit, drill bit is boring the body end, drill neck is boring between body and the drillstock, and this bores body is made up of some fractions brill bodies, and every fraction is bored body and become big gradually by drill bit to drill neck diameter, drill bit is a taper bit, its conical surface is provided with main cutting edge, and the end face that every fraction is bored body is provided with the end cutting edge, and side face is provided with front cutting edge.
Described branch bores body and is provided with three grades, be respectively first fraction and bore body, second fraction brill body and third level branch brill body, described drill bit is located at first fraction and is bored on the end face of body, first fraction is bored body and is located on the end face of second fraction brill body, second fraction is bored body and is located at the third level and divides on the end face that bores body, and second fraction is bored on the end face of body and the third level divides the end face that bores body to be provided with the end cutting edge.
Benefit of the present utility model is simple and practical, and stepped holes such as processing counterbore are easy fast, and production cost is saved in the time processing success, enhances productivity.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Fig. 1 is a kind of structural representation of implementing example of the utility model, as shown in Figure 1, the processing step hole drill bit, it comprises drillstock 1, drill neck 2 and brill body and drill bit 6, drill bit 6 is boring the body end, drill neck 2 is boring between body and the drillstock 1, this bores body and is made up of three fractions brill body, be respectively first fraction and bore body 5, second fraction is bored body 4 and is divided brill body 3 with the third level, every fraction is bored body and is become big gradually by drill bit 6 to drill neck 2 diameters, second fraction is bored body 4 diameters and is bored body 5 greater than first fraction, the third level divides brill body 3 diameters to bore body 4 greater than second fraction, drill bit 6 is a taper bit, and its conical surface is provided with main cutting edge 9, and drill bit 6 is located at first fraction and is bored on the end face of body 5, first fraction is bored body 5 and is located on the end face of second fraction brill body 4, second fraction is bored body 4 and is located at the third level and divides on the end face that bores body 3, and second fraction is bored on the end face of body 4 and the third level divides the end face that bores body 3 to be provided with end cutting edge 8, the first fractions to bore body 5, be equipped with front cutting edge 7 on the side face of second fraction brill body 4 and third level branch brill body 3.

Claims (2)

1. processing step hole drill bit, it is characterized in that: it comprises drillstock, drill neck and bores body and drill bit, drill bit is boring the body end, drill neck is boring between body and the drillstock, and this bores body is made up of some fractions brill bodies, and every fraction is bored body and become big gradually by drill bit to drill neck diameter, drill bit is a taper bit, its conical surface is provided with main cutting edge, and the end face that every fraction is bored body is provided with the end cutting edge, and side face is provided with front cutting edge.
2. processing step hole drill bit according to claim 1, it is characterized in that: described branch bores body and is provided with three grades, be respectively first fraction and bore body, second fraction brill body and third level branch brill body, described drill bit is located at first fraction and is bored on the end face of body, first fraction is bored body and is located on the end face of second fraction brill body, second fraction is bored body and is located at the third level and divides on the end face that bores body, and second fraction is bored on the end face of body and the third level divides the end face that bores body to be provided with the end cutting edge.
CN2010206286372U 2010-11-27 2010-11-27 Drill for machining step holes Expired - Fee Related CN201988772U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206286372U CN201988772U (en) 2010-11-27 2010-11-27 Drill for machining step holes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206286372U CN201988772U (en) 2010-11-27 2010-11-27 Drill for machining step holes

Publications (1)

Publication Number Publication Date
CN201988772U true CN201988772U (en) 2011-09-28

Family

ID=44665275

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206286372U Expired - Fee Related CN201988772U (en) 2010-11-27 2010-11-27 Drill for machining step holes

Country Status (1)

Country Link
CN (1) CN201988772U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102717113A (en) * 2012-05-25 2012-10-10 徐州中矿金海泵业有限公司 Process for machining vent hole of pipe die of cast pipe
CN102744449A (en) * 2012-07-11 2012-10-24 合肥中辰轻工机械有限公司 Machining method for exhaust valve base sealing element
CN103213179A (en) * 2012-01-23 2013-07-24 艾温工业工具公司 Step drill for wood
CN103990836A (en) * 2014-05-21 2014-08-20 芜湖求精紧固件有限公司 Drill bit and drill machine
CN104607699A (en) * 2015-02-02 2015-05-13 苏州阿诺精密切削技术股份有限公司 Multi-step forming reamer
CN108262504A (en) * 2016-12-30 2018-07-10 李仕清 A kind of centre drill
CN112191892A (en) * 2020-09-23 2021-01-08 中国五冶集团有限公司 Drill bit for processing counter bore and drilling method thereof
CN112792384A (en) * 2021-01-19 2021-05-14 安徽省恒泰动力科技有限公司 Composite forming cutter for oil sprayer hole of aluminum cylinder cover and machining method of composite forming cutter

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103213179A (en) * 2012-01-23 2013-07-24 艾温工业工具公司 Step drill for wood
US9156094B2 (en) 2012-01-23 2015-10-13 Irwin Industrial Tool Company Step drill for wood
CN102717113A (en) * 2012-05-25 2012-10-10 徐州中矿金海泵业有限公司 Process for machining vent hole of pipe die of cast pipe
CN102744449A (en) * 2012-07-11 2012-10-24 合肥中辰轻工机械有限公司 Machining method for exhaust valve base sealing element
CN102744449B (en) * 2012-07-11 2015-05-27 合肥中辰轻工机械有限公司 Machining method for exhaust valve base sealing element
CN103990836A (en) * 2014-05-21 2014-08-20 芜湖求精紧固件有限公司 Drill bit and drill machine
CN103990836B (en) * 2014-05-21 2016-09-28 芜湖求精紧固件有限公司 Drill bit and drilling machine
CN104607699A (en) * 2015-02-02 2015-05-13 苏州阿诺精密切削技术股份有限公司 Multi-step forming reamer
CN108262504A (en) * 2016-12-30 2018-07-10 李仕清 A kind of centre drill
CN112191892A (en) * 2020-09-23 2021-01-08 中国五冶集团有限公司 Drill bit for processing counter bore and drilling method thereof
CN112792384A (en) * 2021-01-19 2021-05-14 安徽省恒泰动力科技有限公司 Composite forming cutter for oil sprayer hole of aluminum cylinder cover and machining method of composite forming cutter

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Changzhou Huahui Yongxiang Metal Product Co., Ltd.

Assignor: Dan Xiaoning

Contract record no.: 2012320000533

Denomination of utility model: Drill for machining step holes

Granted publication date: 20110928

License type: Exclusive License

Record date: 20120424

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110928

Termination date: 20121127