CN205147410U - Weld porous step flat drill bit - Google Patents

Weld porous step flat drill bit Download PDF

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Publication number
CN205147410U
CN205147410U CN201520876690.7U CN201520876690U CN205147410U CN 205147410 U CN205147410 U CN 205147410U CN 201520876690 U CN201520876690 U CN 201520876690U CN 205147410 U CN205147410 U CN 205147410U
Authority
CN
China
Prior art keywords
blade
drill bit
flat
step blade
cutting
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
CN201520876690.7U
Other languages
Chinese (zh)
Inventor
杨联英
王勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIAMUSI JICHI TRACTOR MANUFACTURE Ltd Co
Original Assignee
JIAMUSI JICHI TRACTOR MANUFACTURE Ltd Co
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 JIAMUSI JICHI TRACTOR MANUFACTURE Ltd Co filed Critical JIAMUSI JICHI TRACTOR MANUFACTURE Ltd Co
Priority to CN201520876690.7U priority Critical patent/CN205147410U/en
Application granted granted Critical
Publication of CN205147410U publication Critical patent/CN205147410U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a weld porous step flat drill bit, it by: blade blade, first step blade, second step blade, third step blade, step cutter body constitute. Welded diagonal angle blade, first step blade, second step blade, third step blade on step cutter body front end excircle in proper order, the blade blade is 120 degrees, and first step blade, second step blade, third step blade are flat formula structure. This product simple structure, reasonable in design, it adopts special flat drill bit, can require to confirm the cutting according to the work piece aperture, and cutting effect is good, can guarantee the requirement of concentricity, and the radial cross section of cutting tip is flat, and the cutting resistance is little, and the drill bit is difficult to wear and tear, has prolonged the life of drill bit, has improved work efficiency.

Description

Welding porous step flat drill bit
Technical field: the utility model relates to a kind of welding porous step flat drill bit.
Background technology: at present, processing step hole adopts multiple drill bit to cut mostly, processing technology is complicated, concentricity is poor, unstable product quality, and wearing and tearing are large, affect the service life of drill bit, change difficulty, grinding is inconvenient, and cutting resistance is large, steering capability is poor, production cost is high, inefficiency, does not reach standardisation requirements.
Summary of the invention: the purpose of this utility model is to overcome above-mentioned shortcoming, there is provided a kind of welding porous step flat drill bit, it mainly solves processing step hole and mostly adopts multiple drill bit to cut, and processing technology is complicated, concentricity is poor, unstable product quality, wearing and tearing are large, affect the service life of drill bit, change difficulty, the problems such as grinding is inconvenient, and cutting resistance is large, steering capability difference.The purpose of this utility model be achieved in that welding porous step flat drill bit by: cutting edge blade, first step blade, second step blade, the 3rd step blade, step cutter hub are formed.Step cutter hub front end cylindrical is welded with diagonal angle cutting edge blade, first step blade, second step blade, the 3rd step blade successively, and cutting edge blade is 120 degree, and first step blade, second step blade, the 3rd step blade are flat formula structure.This product structure is simple, reasonable in design, it adopts Special flat drill bit, and can require to determine to cut according to workpiece aperture, cutting effect is good, the requirement of concentricity can be ensured, the radial section of cutting tip is flat, and cutting resistance is little, and drill bit is not easy to wear, extend the service life of drill bit, improve operating efficiency.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of the utility model welding porous step flat drill bit.
Accompanying drawing 2 is A-A sectional views of the utility model welding porous step flat drill bit cutting edge blade.
1-cutting edge blade, 2-first step blade, 3-second step blade
4-the three step blade 5-step cutter hub
Detailed description of the invention: describe most preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing, welding porous step flat drill bit by: cutting edge blade 1, first step blade 2, second step blade 3, the 3rd step blade 4, step cutter hub 5 are formed.Step cutter hub 5 front end cylindrical is welded with diagonal angle cutting edge blade 1, first step blade 2, second step blade 3, the 3rd step blade 4 successively, cutting edge blade 1 is 120 degree, and first step blade 2, second step blade 3, the 3rd step blade 4 are flat formula structure.

Claims (1)

1. a welding porous step flat drill bit, it by: cutting edge blade (1), first step blade (2), second step blade (3), the 3rd step blade (4), step cutter hub (5) are formed, it is characterized in that: on the cylindrical of step cutter hub (5) front end, be welded with diagonal angle cutting edge blade (1), first step blade (2), second step blade (3), the 3rd step blade (4) successively, cutting edge blade (1) is 120 degree, and first step blade (2), second step blade (3), the 3rd step blade (4) are flat formula structure.
CN201520876690.7U 2015-11-06 2015-11-06 Weld porous step flat drill bit Expired - Fee Related CN205147410U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520876690.7U CN205147410U (en) 2015-11-06 2015-11-06 Weld porous step flat drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520876690.7U CN205147410U (en) 2015-11-06 2015-11-06 Weld porous step flat drill bit

Publications (1)

Publication Number Publication Date
CN205147410U true CN205147410U (en) 2016-04-13

Family

ID=55683149

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520876690.7U Expired - Fee Related CN205147410U (en) 2015-11-06 2015-11-06 Weld porous step flat drill bit

Country Status (1)

Country Link
CN (1) CN205147410U (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160413

Termination date: 20171106