CN105563057A - Engine crankshaft machining method - Google Patents

Engine crankshaft machining method Download PDF

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Publication number
CN105563057A
CN105563057A CN201510861078.7A CN201510861078A CN105563057A CN 105563057 A CN105563057 A CN 105563057A CN 201510861078 A CN201510861078 A CN 201510861078A CN 105563057 A CN105563057 A CN 105563057A
Authority
CN
China
Prior art keywords
grinding
crankshaft
machine
milling
machining
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
CN201510861078.7A
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Chinese (zh)
Inventor
张俊
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.)
Shaanxi Yiyang Technology Co Ltd
Original Assignee
Shaanxi Yiyang Technology 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 Shaanxi Yiyang Technology Co Ltd filed Critical Shaanxi Yiyang Technology Co Ltd
Priority to CN201510861078.7A priority Critical patent/CN105563057A/en
Publication of CN105563057A publication Critical patent/CN105563057A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/07Crankshafts

Abstract

The invention relates to the field of machining, in particular to an engine crankshaft machining method. The method includes the following steps that a blank is selected and is formed through a forging method; end faces and center holes are milled, and the shaft end faces and the center holes are machined on a milling and drilling machine; quenching and tempering are performed; rough machining is performed, two end journals, the conical face and the eccentric cylindrical face of a crankshaft are roughly machined on a lathe; thermal treatment and local quenching are performed, and quenching is performed on the two end journals and the eccentric cylindrical face of the crankshaft; the center holes are repaired and ground, wherein the center holes in the two ends of the crankshaft are repaired and ground; key grooves are milled, the outer circle key groove is machined on a vertical milling machine, and the inner hole key groove is machined on a slotting machine; finish grinding is performed, a workpiece is machined on a grinding machine, and cooling of cooling liquid is performed in the grinding process; inspection is performed; and a product is put in storage. The requirement for machining precision can be met, machining quality is guaranteed, production efficiency is improved, and production cost is reduced.

Description

Engine crankshaft processing method
Technical field
The present invention relates to field of machining, be specifically related to engine crankshaft processing method.
Background technology
Engine crankshaft is mainly used for transmitting motion and moment of torsion in the machine, also plays the effect supporting other driving parts simultaneously.The general all more complicated of structure of bent axle, the machining kinds related to is also more, process is also more difficult, requirement on machining accuracy is also higher simultaneously, emphasis is the mutual alignment relation that will ensure two ends axle journal, guarantees can not vibrate in bent axle motion process after mounting, and in current processing method, the required precision of bent axle can not meet the demands, working (machining) efficiency is low, and product percent of pass is lower.
Summary of the invention
In order to solve the problem, the invention provides one can meet requirement on machining accuracy, ensures crudy, enhances productivity, and reduces the engine crankshaft processing method of production cost.
Engine crankshaft processing method of the present invention, is characterized in that, comprise the following steps:
The first step, the selection of blank, adopts the method for forging, forms blank;
Second step, milling end face, centre bore, on milling and drilling machine, process axial end and centre bore;
3rd step, modifier treatment;
4th step, roughing, lathe carries out roughing to the two ends axle journal of bent axle and taper seat, eccentric cylinder;
5th step, heat treatment, selective hardening, carries out Quenching Treatment to crankshaft two end axle journal and eccentric cylinder;
6th step, repaiies center lapping, repaiies the centre bore grinding crankshaft two end;
7th step, milling key groove, vertical knee-type milling machine is processed keyway, and the processing of inner hole key slot is selected slotting machine carries out;
8th step, fine grinding, grinding machine is processed workpiece, and Grinding Process will with the cooling of cooling fluid;
9th step, inspection;
Tenth step, warehouse-in.
The present invention can meet requirement on machining accuracy, ensures crudy, enhances productivity, and reduces production cost.
Detailed description of the invention
Engine crankshaft processing method of the present invention, it is characterized in that, comprise the following steps: the first step, the selection of blank, the Main Function of bent axle transmits motion and moment of torsion, therefore must ensure that workpiece has good mechanical property on blank is selected, the several method that comprehensive blank is shaping, forging molding is proper, forging molding can ensure the mechanical property of workpiece, the quality of blank is also higher in addition there will not be the defects such as inner sand holes, pore, and forging molding also has a benefit to be exactly to save the roughing process of blank;
Second step, milling end face, centre bore, this operation can be selected to carry out on milling and drilling machine, utilizes custom-designed fixture to process axial end and centre bore, arranges like this can greatly enhance productivity with the requirement of satisfied production in enormous quantities;
3rd step, modifier treatment, because the work characteristics of bent axle is more special, so must through the process of modifier treatment, this operation can make the mechanical property of bent axle get a promotion, and meets the needs of carry-over moment in work.Modifier treatment is generally carry out after roughing, and its hardness level of the workpiece after modified can reach technical requirement completely;
4th step, roughing, the roughing of the two ends axle journal of bent axle and taper seat, eccentric cylinder can be selected to carry out on lathe, and turnery processing has flexible operation, feature that efficiency is high.In addition, need when turning eccentric cylinder to locate by custom-designed fixture, to guarantee that the crudy of workpiece can meet technical requirement;
5th step, selective hardening, because the position of two ends axle journal and eccentric cylinder needs to transmit larger moment of torsion in the work of reality, therefore, this position must have good mechanical property, Quenching Treatment is carried out to these positions, not only can improve the case hardness at this place, also can increase the service life of bent axle simultaneously.Before Quenching Treatment is generally arranged in grinding, it belongs to final heat treatment step.
6th step, repair center lapping, the centre bore work in-process at axle two ends mainly plays the effect of location, the crudy of two ends centre bore directly determines the machining accuracy of whole workpiece, the processing request cone angle of centre bore is wanted accurately, it and top contact area want large as far as possible, and surface finish requirements is also higher;
7th step, milling key groove, the manufacturing procedure of keyway can arrange to carry out before the finish grinding usually, the object done like this can guarantee accurately machinedly to carry out continuously, avoid producing vibration and damaging cutter, the processing of cylindrical keyway is selected vertical knee-type milling machine carries out, and the processing of inner hole key slot is selected slotting machine carries out;
8th step, fine grinding, for the workpiece that surface finish requirements is higher, the method of fine grinding is generally adopted when processing outer surface, this mode can improve the credit rating of finished surface greatly, to meet the required precision of part, Grinding Process with the cooling of cooling fluid, will be avoided because grinding heat makes surface of the work that burn occur and occurs crackle;
9th step, inspection;
Tenth step, warehouse-in.
The present invention can meet requirement on machining accuracy, ensures crudy, enhances productivity, and reduces production cost.

Claims (1)

1. an engine crankshaft processing method, is characterized in that, comprises the following steps:
The first step, the selection of blank, adopts the method for forging, forms blank;
Second step, milling end face, centre bore, on milling and drilling machine, process axial end and centre bore;
3rd step, modifier treatment;
4th step, roughing, lathe carries out roughing to the two ends axle journal of bent axle and taper seat, eccentric cylinder;
5th step, heat treatment, selective hardening, carries out Quenching Treatment to crankshaft two end axle journal and eccentric cylinder;
6th step, repaiies center lapping, repaiies the centre bore grinding crankshaft two end;
7th step, milling key groove, vertical knee-type milling machine is processed keyway, and the processing of inner hole key slot is selected slotting machine carries out;
8th step, fine grinding, grinding machine is processed workpiece, and Grinding Process will with the cooling of cooling fluid;
9th step, inspection;
Tenth step, warehouse-in.
CN201510861078.7A 2015-12-01 2015-12-01 Engine crankshaft machining method Pending CN105563057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510861078.7A CN105563057A (en) 2015-12-01 2015-12-01 Engine crankshaft machining method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510861078.7A CN105563057A (en) 2015-12-01 2015-12-01 Engine crankshaft machining method

Publications (1)

Publication Number Publication Date
CN105563057A true CN105563057A (en) 2016-05-11

Family

ID=55873975

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510861078.7A Pending CN105563057A (en) 2015-12-01 2015-12-01 Engine crankshaft machining method

Country Status (1)

Country Link
CN (1) CN105563057A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107175478A (en) * 2017-05-30 2017-09-19 胡建锋 A kind of motorcycle left part crankshaft part mechanical processing technique
CN107470872A (en) * 2017-10-20 2017-12-15 湖州正德轻工机械有限公司 A kind of processing method of bent axle
CN107649842A (en) * 2017-11-09 2018-02-02 王海艳 A kind of flange processing technique
CN109454416A (en) * 2018-10-17 2019-03-12 徐州市久发工程机械有限责任公司 A kind of processing method of crankshaft

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107175478A (en) * 2017-05-30 2017-09-19 胡建锋 A kind of motorcycle left part crankshaft part mechanical processing technique
CN107470872A (en) * 2017-10-20 2017-12-15 湖州正德轻工机械有限公司 A kind of processing method of bent axle
CN107649842A (en) * 2017-11-09 2018-02-02 王海艳 A kind of flange processing technique
CN109454416A (en) * 2018-10-17 2019-03-12 徐州市久发工程机械有限责任公司 A kind of processing method of crankshaft

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Date Code Title Description
PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20160511

WD01 Invention patent application deemed withdrawn after publication