CN105312593A - Ejection rod hole drilling method after surfacing of crankshaft forging die - Google Patents

Ejection rod hole drilling method after surfacing of crankshaft forging die Download PDF

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Publication number
CN105312593A
CN105312593A CN201410367474.XA CN201410367474A CN105312593A CN 105312593 A CN105312593 A CN 105312593A CN 201410367474 A CN201410367474 A CN 201410367474A CN 105312593 A CN105312593 A CN 105312593A
Authority
CN
China
Prior art keywords
forging die
plug
hole
surfacing
ejection rod
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.)
Pending
Application number
CN201410367474.XA
Other languages
Chinese (zh)
Inventor
于炳红
陈志辉
谢贵超
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.)
GUILIN FUDA HEAVY INDUSTRY FORGING Co Ltd
Original Assignee
GUILIN FUDA HEAVY INDUSTRY 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 GUILIN FUDA HEAVY INDUSTRY FORGING Co Ltd filed Critical GUILIN FUDA HEAVY INDUSTRY FORGING Co Ltd
Priority to CN201410367474.XA priority Critical patent/CN105312593A/en
Publication of CN105312593A publication Critical patent/CN105312593A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an ejection rod hole drilling method after surfacing of a crankshaft forging die. Before surfacing of the crankshaft forging die, a plug whose size is matched with an ejection rod hole is made of round steel with lower hardness than the material of the forging die, a through hole is formed in the center of the plug, and surfacing is performed after the ejection rod hole is plugged by the plug; after surfacing, a drill is adopted for drilling from the central through hole of the plug and drills through the ejection rod hole gradually. The ejection rod drilling method has the advantages as follows: the method is simple and practical, the drilling efficiency can be improved, and the loss of the drill can be reduced.

Description

The boring method of Crank Forging Die heap postwelding jogger hole
Technical field
The present invention relates to the Crank Forging Die of automobile engine, specifically the boring method of engine crankshaft forging die heap postwelding jogger hole.
Background technology
The Crank Forging Die heap postwelding of automobile engine, the jogger hole of Crank Forging Die needs redrilling, because forging die built-up welding part hardness is higher, and uneven, during boring, drill bit easily bores partially, and the cutting edge of drill bit easily collapses and even ruptures.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, and provide a kind of engine crankshaft forging die to pile the boring method of postwelding jogger hole, adopt the method can improve drilling efficiency, reduce the loss of drill bit.
The technical scheme realizing the object of the invention is:
The boring method of Crank Forging Die heap postwelding jogger hole, before Crank Forging Die built-up welding, adopt the round steel lower than forging die material hardness to make a plug suitable with jogger hole size, the center of plug is provided with through hole, again carries out built-up welding after blocking jogger hole with plug; After built-up welding completes, hole by the central through hole guiding of drill bit from plug, drill through jogger hole gradually.
The head of described plug 3 is tapered.
Adopt the inventive method, after Crank Forging Die built-up welding completes, drill bit is holed from the central through hole guiding of plug, drills through jogger hole gradually, is not easy to bore partially.During boring, drill bit first gets into the low plug material of hardness, progressively gets into the surfacing part material that hardness is high, and drill bit is low to the transition boring gradually of hardness height by hardness, is not easy to cause drill bit spring sword or fracture.
Advantage of the present invention is: the inventive method is simple and practical, can improve drilling efficiency, reduces drill bit loss.
Accompanying drawing explanation
Fig. 1 is forging die of the present invention heap postwelding plug position view;
Fig. 2 is that forging die of the present invention heap postwelding jogger hole has been holed schematic diagram;
Fig. 3 is the structural representation of plug of the present invention.
In figure, 1. forging die 2. heap welding zone 3. plug 4. through hole 5. jogger hole.
Detailed description of the invention
Below in conjunction with drawings and Examples, content of the present invention is further described, but is not limitation of the invention.
With reference to Fig. 1-3, Crank Forging Die heap postwelding, comprise forging die 1, heap welding zone 2, jogger hole 5, when holing to jogger hole 5, before Crank Forging Die built-up welding, adopt the round steel lower than forging die 1 material hardness to make the tapered plug 3 of a head suitable with jogger hole 5 size, the center of plug 3 is provided with through hole 4, again carries out built-up welding after blocking jogger hole 5 with plug 3; After built-up welding completes, drill bit is holed from central through hole 4 guiding of plug 3, drills through jogger hole 5 gradually.

Claims (2)

1. the boring method of Crank Forging Die heap postwelding jogger hole, it is characterized in that: before Crank Forging Die built-up welding, adopt the round steel lower than forging die material hardness to make a plug suitable with jogger hole size, the center of plug is provided with through hole, again carries out built-up welding after blocking jogger hole with plug; After built-up welding completes, hole by the central through hole guiding of drill bit from plug, drill through jogger hole gradually.
2. described boring method according to claim 1, is characterized in that: the head of described plug is tapered.
CN201410367474.XA 2014-07-30 2014-07-30 Ejection rod hole drilling method after surfacing of crankshaft forging die Pending CN105312593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410367474.XA CN105312593A (en) 2014-07-30 2014-07-30 Ejection rod hole drilling method after surfacing of crankshaft forging die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410367474.XA CN105312593A (en) 2014-07-30 2014-07-30 Ejection rod hole drilling method after surfacing of crankshaft forging die

Publications (1)

Publication Number Publication Date
CN105312593A true CN105312593A (en) 2016-02-10

Family

ID=55241461

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410367474.XA Pending CN105312593A (en) 2014-07-30 2014-07-30 Ejection rod hole drilling method after surfacing of crankshaft forging die

Country Status (1)

Country Link
CN (1) CN105312593A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109623006A (en) * 2018-12-17 2019-04-16 哈电集团(秦皇岛)重型装备有限公司 A kind of method of inclined tube drilling processing on tube sheet
CN114029644A (en) * 2021-11-12 2022-02-11 安徽省屯溪高压阀门有限公司 Welding method for small-caliber high-pressure gate valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6370752B1 (en) * 2000-04-21 2002-04-16 General Electric Company Method for repositioning or repairing holes
US20030173699A1 (en) * 2002-03-14 2003-09-18 Mclean Kenneth Hole forming plug
CN101748899A (en) * 2010-01-14 2010-06-23 中天建设集团有限公司 Method for pore forming by embedding assistant bonded rebar in reinforced concrete structure
CN101861432A (en) * 2007-09-18 2010-10-13 上海磁浮交通工程技术研究中心 Magnetic suspension railway structure and its manufacture method
CN102049543A (en) * 2009-11-10 2011-05-11 柳州福臻车体实业有限公司 Method for re-drilling locating hole on die insert subject to deformation after heat treatment
CN102797223A (en) * 2012-08-22 2012-11-28 中铁十九局集团第七工程有限公司 Construction method for cast-in-place of continuous beam at turnout junction for passenger transport line in seawall area by false work method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6370752B1 (en) * 2000-04-21 2002-04-16 General Electric Company Method for repositioning or repairing holes
US20030173699A1 (en) * 2002-03-14 2003-09-18 Mclean Kenneth Hole forming plug
CN101861432A (en) * 2007-09-18 2010-10-13 上海磁浮交通工程技术研究中心 Magnetic suspension railway structure and its manufacture method
CN102049543A (en) * 2009-11-10 2011-05-11 柳州福臻车体实业有限公司 Method for re-drilling locating hole on die insert subject to deformation after heat treatment
CN101748899A (en) * 2010-01-14 2010-06-23 中天建设集团有限公司 Method for pore forming by embedding assistant bonded rebar in reinforced concrete structure
CN102797223A (en) * 2012-08-22 2012-11-28 中铁十九局集团第七工程有限公司 Construction method for cast-in-place of continuous beam at turnout junction for passenger transport line in seawall area by false work method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109623006A (en) * 2018-12-17 2019-04-16 哈电集团(秦皇岛)重型装备有限公司 A kind of method of inclined tube drilling processing on tube sheet
CN109623006B (en) * 2018-12-17 2024-02-13 哈电集团(秦皇岛)重型装备有限公司 Method for drilling inclined tube on tube plate
CN114029644A (en) * 2021-11-12 2022-02-11 安徽省屯溪高压阀门有限公司 Welding method for small-caliber high-pressure gate valve

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Application publication date: 20160210