CN203484718U - Novel drill head structure used for fine hole machining - Google Patents

Novel drill head structure used for fine hole machining Download PDF

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Publication number
CN203484718U
CN203484718U CN201320589873.1U CN201320589873U CN203484718U CN 203484718 U CN203484718 U CN 203484718U CN 201320589873 U CN201320589873 U CN 201320589873U CN 203484718 U CN203484718 U CN 203484718U
Authority
CN
China
Prior art keywords
cutting
drill head
guide
conical
tapered
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
CN201320589873.1U
Other languages
Chinese (zh)
Inventor
是玉丰
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.)
WUXI PAIKE HEAVY CASTING AND FORGING CO Ltd
Original Assignee
WUXI PAIKE HEAVY CASTING AND FORGING CO Ltd
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 WUXI PAIKE HEAVY CASTING AND FORGING CO Ltd filed Critical WUXI PAIKE HEAVY CASTING AND FORGING CO Ltd
Priority to CN201320589873.1U priority Critical patent/CN203484718U/en
Application granted granted Critical
Publication of CN203484718U publication Critical patent/CN203484718U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a novel drill head structure used for fine hole machining. The novel drill head structure comprises a drill head body. The drill head body is composed of a cutting part and a guide part. The section of the cutting part is composed of two connected outer tool edges. A scrap discharging groove is further formed in the cutting part. The section of the guide part is composed of two parallel straight lines. A first tapered surface part and a second tapered surface part which are connected with each other are further arranged between the cutting part and the guide part. The novel drill head structure is simple in structure and can be used for conveniently carrying out machining; because the first tapered surface part and the second tapered surface part are arranged between the cutting part and the guide part, the problem that machining becomes difficult after inch sizes are transformed to metric sizes is effectively solved and enterprise production cost is greatly reduced. The novel drill head structure is wide in applicable range, can be repeatedly used by polishing the blades, greatly improves enterprise production efficiency and greatly reduces enterprise input cost.

Description

A kind of new drill structure for the processing of smart hole
Technical field
The utility model relates to metal-cutting machine tool, relates in particular to a kind of new drill structure for the processing of smart hole.
Background technology
At present, because China adopts metric size and tolerance, and European countries adopt imperial sizing and tolerance, when the product of processing European countries, usually need to convert imperial sizing and tolerance to metric size and tolerance, but imperial sizing and tolerance are not all integers after conversion, processing during various locating hole (as the aperture of Ф below 30, deep hole), because dimensional tolerance is not integer, thereby cannot select suitable cutter, as adopt cutter made in Great Britain also to need again to customize, customize length consuming time, price, not only improved the input cost of enterprise, also reduced the production efficiency of enterprise, extended the product delivery time.
Utility model content
The applicant, for above-mentioned existing issue, is studied improvement, and a kind of new drill structure for the processing of smart hole is provided, and has not only solved the problem of the processing difficulties that conversion metric system made in Great Britain brings, and has also reduced enterprise's input cost, has improved enterprises production efficiency.
The technical scheme that the utility model adopts is as follows:
A kind of new drill structure for the processing of smart hole, comprise drill body, described drill body consists of cutting portion and guide part, the cross section of described cutting portion consists of two outer blades that connect each other, on described cutting portion, also have chip area, the cross section of described guide part by two each other parallel straight line form, between described cutting portion and guide part, the first conical surface portion and the second conical surface portion being connected each other is also set.
Its further technical scheme is:
The bus length L1 in described the first conical surface portion cross section is 2mm~3.5mm, the bus length L2 in described the second conical surface portion cross section is 1mm~1.5mm, the cone basil θ forming between described the first conical surface portion cross section two buses is 70 °~75 °, and the cone basil β forming between described the second conical surface portion cross section two buses is 30 °~40 °;
The outside sharp angle α forming between described two outer blades that connect is each other 115 °~120 °.
The beneficial effects of the utility model are as follows:
The utility model is simple in structure, easy to process, by the first conical surface portion and the second conical surface portion are set between cutting portion and guide part, effectively solved the problem that changes processing difficulties after metric size because of imperial sizing into, by adopting the method for common drill bit grinding effectively to solve drill bit customization made in Great Britain and purchased difficult problem, also improved the degree of going window-shopping of hole processing simultaneously, greatly reduce enterprise's production cost, the utility model is widely applicable, sharpening be can repeat applicable, enterprises production efficiency and input cost greatly improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.
As shown in Figure 1, the utility model comprises drill body, drill body consists of cutting portion and guide part, the cross section of cutting portion consists of two outer blades 1 that connect each other, on cutting portion, also have chip area 4, the cross section of guide part by two each other parallel straight line 5 form, between cutting portion and guide part, the first conical surface portion 2 and the second conical surface portion 3 being connected each other is also set.The bus length L1 in the first conical surface portion 2 cross sections is 2mm~3.5mm, the bus length L2 in the second conical surface portion 3 cross sections is 1mm~1.5mm, the cone basil θ forming between the first conical surface portion 2 cross section two buses is 70 °~75 °, and the cone basil β forming between the second conical surface portion 3 cross section two buses is that the outside sharp angle α forming between 30 °~40 ° two outer blades 1 that connect is each other 115 °~120 °.
The utility model is used in cast iron, the cast steel except hardened steel, basic, normal, high carbon steel, and steel alloy etc., within the scope of the accuracy guarantee ± 0.01mm of its machining hole, fineness can reach Ra0.4 ~ 0.8, and controllability is strong; For precision, the fineness problem of the insurmountable drilling deep hole of the following reamer of Ф 20mm, this drill bit can utilize ordinary copper welding to lengthen and can solve.
More than describing is to explanation of the present utility model, is not the restriction to utility model, and the utility model limited range is referring to claim, and without prejudice to basic structure of the present utility model in the situation that, the utility model can be done any type of modification.

Claims (3)

1. the new drill structure for the processing of smart hole, comprise drill body, described drill body consists of cutting portion and guide part, the cross section of described cutting portion consists of two outer blades (1) that connect each other, on described cutting portion, also have chip area (4), the cross section of described guide part by two each other parallel straight line (5) form, it is characterized in that: between described cutting portion and guide part, the first conical surface portion (2) and the second conical surface portion (3) being connected each other is also set.
2. a kind of new drill structure for the processing of smart hole as claimed in claim 1, it is characterized in that: the bus length L1 in described the first conical surface portion (2) cross section is 2mm~3.5mm, the bus length L2 in described the second conical surface portion (3) cross section is 1mm~1.5mm, the cone basil θ forming between described the first conical surface portion (2) cross section two buses is 70 °~75 °, and the cone basil β forming between described the second conical surface portion (3) cross section two buses is 30 °~40 °.
3. a kind of new drill structure for the processing of smart hole as claimed in claim 1, is characterized in that: the outside sharp angle α forming between described two the outer blades (1) that connect is each other 115 °~120 °.
CN201320589873.1U 2013-09-24 2013-09-24 Novel drill head structure used for fine hole machining Expired - Fee Related CN203484718U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320589873.1U CN203484718U (en) 2013-09-24 2013-09-24 Novel drill head structure used for fine hole machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320589873.1U CN203484718U (en) 2013-09-24 2013-09-24 Novel drill head structure used for fine hole machining

Publications (1)

Publication Number Publication Date
CN203484718U true CN203484718U (en) 2014-03-19

Family

ID=50255577

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320589873.1U Expired - Fee Related CN203484718U (en) 2013-09-24 2013-09-24 Novel drill head structure used for fine hole machining

Country Status (1)

Country Link
CN (1) CN203484718U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106216743A (en) * 2016-09-26 2016-12-14 山东大学 A kind of double tapered angle chip-breaking drill bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106216743A (en) * 2016-09-26 2016-12-14 山东大学 A kind of double tapered angle chip-breaking drill bit

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Xiao Zhongyong

Inventor before: Shi Yufeng

COR Change of bibliographic data
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140319

Termination date: 20160924

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