CN103406783B - Engine cylinder head end face drilling and milling method - Google Patents

Engine cylinder head end face drilling and milling method Download PDF

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Publication number
CN103406783B
CN103406783B CN201310330043.1A CN201310330043A CN103406783B CN 103406783 B CN103406783 B CN 103406783B CN 201310330043 A CN201310330043 A CN 201310330043A CN 103406783 B CN103406783 B CN 103406783B
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gas
clamping
cylinder cap
supporting
drilling
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CN103406783A (en
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郑志勋
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Wuhu Yongyu Autocar Industrial Co Ltd
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Wuhu Yongyu Autocar Industrial Co Ltd
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Abstract

The invention discloses an engine cylinder head end face drilling and milling method including a clamping procedure of a cylinder head. A special clamp is used in the clamping procedure, traditional long stripe plates are replaced by supporting nails, so that the contacting surface of the cylinder head during clamping is reduced greatly, and the problem of excessive large flatness caused by excessive large positioning face by traditional clamping is reduced greatly, accurate clamping of the cylinder head can be realized, and a solid foundation is laid for reducing unnecessary system errors in the drilling and milling procedure of two end faces of the cylinder head; the clamp is provided with a gas detecting device, and fitting leakproofness between the supporting nails and the cylinder head can be detected timely to guarantee reliable clamping; the clamp is simple in structure, usage and operation are facilitated, and workers for processing the products can work and operate without training, so that processing efficiency of the cylinder head can be improved.

Description

A kind of engine cylinder cover end face drilling and milling processing method
Technical field
The present invention relates to the manufacture method of cylinder cap, specifically, the present invention relates to a kind of engine cylinder cover end face drilling and milling processing method.
Background technology
At present, in automobile engine cylinder head mechanical processing process, it is a very important procedure in cylinder cap process that cylinder cap both ends of the surface bore Milling Machining, and the precision of its processing will directly arrive the impact of quality on machining accuracy of the product quality affecting engine cylinder cover, particularly frock clamp.Because engine cylinder cover structure is very complicated, its both ends of the surface brill Milling Machining technology difficulty is very large, wherein major part is frock problem, often adopt built-up jig general on lathe to realize frock clamping in general process, in lathe, cylinder cap is placed on two strip plates during clamping, then push down cylinder cap with the helical spring pressing plate of band, then start lathe and carry out fine finishining.Adopt this installation way, this just needs operator to have very masterful technique, and due to the complexity of automobile engine cylinder head structure, make operator much consuming time when selecting and install general built-up jig, unnecessary impact is caused again on cylinder cap working (machining) efficiency, and cause locating surface flatness problems of too due to the datum level that strip plate is large, to such an extent as to produce very large systematic error, the yield rate of the cylinder cap now processed just declines to some extent.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of engine cylinder cover end face drilling and milling processing method, to improve working (machining) efficiency, reduces systematic error.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of engine cylinder cover end face drilling and milling processing method, and comprise the clamping operation of cylinder cap being carried out to clamping, use special fixture in clamping operation, clamping operation comprises following step:
(1) fixture is fixed on drilling and milling machine tool, cylinder cap is placed on the panel of fixture;
(2) use the detent mechanism in clamp face plate to complete the location of fixture, detent mechanism comprises the supporting nail that several end faces are plane, and cylinder cap is placed on the supporting plane of supporting nail formation with its bottom surface;
(3) hold-down mechanism in clamp face plate is used to fix cylinder cap;
(4) whether the joint place using the gas check on fixture to detect between supporting nail and cylinder cover bottom surface leaks gas;
(5) if supporting nail leak gas with the joint place of cylinder cover bottom surface, then clamping cylinder cap again, repetition step (2) is to (4); If supporting nail is air tight with the joint place of cylinder cover bottom surface, then complete clamping.
Described gas check comprises source of the gas, tracheorrhaphy joint and gas-tpe fitting, tracheorrhaphy joint is connected between source of the gas and gas-tpe fitting, the pore leading to end face is provided with in supporting nail, the pore that gas-tpe fitting is followed closely with supporting is connected, the compressed air that source of the gas produces, through tracheorrhaphy joint, gas-tpe fitting and pore, flows to the joint place between the end face of supporting nail and cylinder cover bottom surface.
Described tracheorrhaphy joint is connected with described gas-tpe fitting by plastic flexible pipe, and plastic flexible pipe is provided with the sensor be connected with alarm, and sensor is for detecting the air pressure in plastic flexible pipe; If sensor detects air pressure in plastic flexible pipe and changes, then indicate that gas leakage occurs, gas leakage signal is sent to alarm by sensor, and alarm starts to report to the police.
Described detent mechanism also comprises two alignment pins established on the panel, and one of them is straight pin, and another is rhombus pin; When putting cylinder cap, two of cylinder cover bottom surface locating holes are alignd with two alignment pin position, alignment pin is inserted in locating hole.
Described hold-down mechanism matches with described supporting nail compression cylinder cap, cylinder cap is pressed on the supporting plane of supporting nail formation at the end face of cylinder cap by hold-down mechanism, hold-down mechanism comprises several pressing plates and establishes several support columns on the panel, pressing plate cover on the support columns, the top of support column is provided with clamp nut, on each support column, also cover has cylindrically coiled spring, and cylindrically coiled spring one end is against on pressing plate, and the other end is against the bottom of support column.
The seal face of described pressing plate is provided with pressure pad.
Described panel is provided with the adjusting rod regulated the height of described pressing plate, and adjusting rod and panel are for being threaded.
Described fixture also comprises base, and base comprises and described panel base plate connected vertically and the gusset that is located between base plate and panel, and base plate is for the fixed installation of whole fixture on drilling and milling machine tool.
The present invention adopts technique scheme, compared with prior art, this drilling and milling processing method uses special fixture in the clamping operation of cylinder cap, this fixture replaces traditional strip plate to support nail, the contact surface of cylinder cap in clamping is reduced greatly, thus considerably reduce traditional frock due to locating surface excessive and produce the problem of excessive flatness, the accurate clamping of cylinder cap can be realized, lay a solid foundation for reducing unnecessary systematic error in the brill Milling Machining operation of cylinder cap both ends of the surface, and fixture is provided with gas check, the laminating tightness between supporting nail and cylinder cap can be detected in time, to guarantee reliable clamping, this clamp structure is simple, uses easy to operate, and the employee processing this product gets final product operation on duty without the need to training especially, thus can improve the working (machining) efficiency of cylinder cap.
Accompanying drawing explanation
Fig. 1 is the front view of the fixture used in the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Mark in above-mentioned figure is: 1, pressing plate; 2, adjusting rod; 3, Compress Spring; 4, center platen; 5, straight pin; 6, gas-tpe fitting; 7, plastic flexible pipe; 8, tracheorrhaphy joint; 9, base plate; 10, panel; 11, rhombus pin; 12, gusset; 13, cylinder cap; 14, supporting nail.
Detailed description of the invention
A kind of engine cylinder cover end face of the present invention drilling and milling processing method, comprises and carries out the clamping operation of clamping and follow-up brill miller sequence etc. to cylinder cap.Primary object of the present invention is the improvement of clamping operation, other operation and traditional diamond-making technique similar.Special fixture is used in the clamping operation of this drilling and milling processing method, this fixture as shown in Figure 1, Figure 2 and Figure 3, fixture comprises base and is located at the panel 10 for placing cylinder cap 13 on base, the detent mechanism that panel 10 is provided with the hold-down mechanism for compressing cylinder cap 13 and locates for cylinder cap 13, detent mechanism comprises the supporting nail 14 that several end faces are plane, on the supporting plane that the end face that cylinder cap 13 is placed in supporting nail 14 with its bottom surface is formed jointly.Whether base is also provided with for detecting the gas check of tightness of fitting between supporting nail 14 and cylinder cap 13 bottom surface, gas check can be inflated to the joint place between supporting nail 14 and cylinder cap 13 bottom surface, and detect and leak gas; If gas leakage, then position and clamping cylinder cap 13 again; If air tight, then can start to bore Milling Machining.
Clamping operation comprises following step:
(1) fixture is fixed on drilling and milling machine tool, cylinder cap 13 is placed on the panel 10 of fixture;
(2) use the detent mechanism in clamp face plate 10 to complete the location of fixture, detent mechanism comprises the supporting nail 14 that several end faces are plane, and cylinder cap 13 is placed on the supporting plane of supporting nail 14 formation with its bottom surface;
(3) hold-down mechanism in clamp face plate 10 is used to fix cylinder cap 13;
(4) whether the joint place using the gas check on fixture to detect between supporting nail 14 and cylinder cap 13 bottom surface leaks gas;
(5) if supporting nail 14 leak gas with the joint place of cylinder cap 13 bottom surface, then clamping cylinder cap 13 again, repetition step (2) is to (4); If supporting nail 14 is air tight with the joint place of cylinder cap 13 bottom surface, then complete clamping.
This clamping operation to support the quality of tightness of fitting between the end face of nail 14 and the bottom surface of cylinder cap 13, as judging the accurate and reliable foundation of cylinder cap 13 clamping.If air tight, then represent that laminating tightness is good, cylinder cap 13 clamping is accurately reliable; If gas leakage, then need clamping again.
After completing clamping, then start the brill Milling Machining of cylinder cap 13 1 end faces, bore after milling terminates at this end face, unload cylinder cap 13, cylinder cap 13 to be adjusted by fixture after turnback clamping again, processing other end.
Specifically, on the faceplate 10, five supporting nails 14 1 groups form a supporting plane jointly, and five supporting nails 14 are scattered in two row along the length direction of cylinder cap 13, wherein two supporting nails 14 are arranged near a sidepiece of cylinder cap 13, and other three supporting nails 14 are arranged near the other side of cylinder cap 13.In five supporting nails 14, wherein four supporting nails 14 are near four corner positions of cylinder cap 13, can form more stable support.Supporting nail 14 by screw fastening on the faceplate 10, can be changed in time when supporting nail 14 wear extent in multiple clamping and being excessive.The end face of supporting nail 14 wants isoplanar to polish, to ensure that the flatness of its supporting plane formed meets the technical requirement of cylinder cap 13 Working position adjustment.
The inside of supporting nail 14 is provided with the pore leading to end face, and the pore of supporting nail 14 is connected with gas check.In addition, the pore on supporting nail 14 can be set to through hole, and namely pore runs through whole supporting nail 14, so that be connected with the gas-tpe fitting 6 of gas check along the length direction of supporting nail 14.Gas check comprises sensor, alarm, source of the gas, the gas-tpe fitting 6 that is located at tracheorrhaphy joint 8 on base and is connected with supporting nail 14, and source of the gas is used for providing compressed air, can for air pump, air accumulator or other compressed-air actuated equipment can be provided.Gas-tpe fitting 6 inserts at the rear portion of panel 10 in the through hole that panel 10 is arranged and is connected with the port sealing of supporting nail 14, is connected with pore.Tracheorrhaphy joint 8 is connected between source of the gas and gas-tpe fitting 6, tracheorrhaphy joint 8 is fixedly mounted on base plate 9, tracheorrhaphy joint 8 is connected with the gas-tpe fitting 6 identical with supporting nail 14 total quantity by plastic flexible pipe 7, the compressed air that source of the gas produces, through tracheorrhaphy joint 8, plastic flexible pipe 7, gas-tpe fitting 6 and pore, finally flows to the joint place of supporting nail 14 end face and cylinder cap 13 bottom surface.Each plastic flexible pipe 7 is provided with sensor, and sensor is also connected with alarm, and sensor can detect the air pressure in plastic flexible pipe 7.If the air pressure that sensor detects in plastic flexible pipe 7 changes, then indicate that gas leakage occurs, gas leakage signal is sent to alarm by sensor, and alarm starts to report to the police, and again carries out clamping to cylinder cap 13 to remind operating personnel.If air tight, alarm is not then reported to the police.
Use this this gas check can ensure the reliable of clamp, by offering pore in the middle of each supporting nail 14, this pore connects the air pressure that panel 10 tracheae below also leads to certain pressure, if it is unreliable to clamp, supporting is above followed closely 14 end faces and is had gas leak phenomenon and cause warning to remind operating personnel again to clamp.
The detent mechanism of fixture also comprises two alignment pins established on the faceplate 10, and one of them is straight pin 5, and another is that rhombus pin 11, two alignment pins pass through screw fastening on the faceplate 10.Straight pin 5 and rhombus pin 11 are set up in parallel, and the same sidepiece of close cylinder cap 13.The bottom choosing of cylinder cap 13 has the locating hole suitable with two alignment pins, when putting cylinder cap 13, is alignd by two locating holes of cylinder cap 13 bottom surface with two alignment pin position, and alignment pin is inserted in locating hole.Arrange alignment pin to locate man-hour more accurately reliably to ensure that cylinder cap 13 adds, these two alignment pins are also provided with nylon locating pad to protect cylinder cap 13 from unnecessary scuffing.In whole fixture, the position dimension of two alignment pins and rest pad all must strictly limit to play the technical requirement that this fixture meets Product processing.When changing in time during locating pad generation excessive deformation in multiple clamping.
The hold-down mechanism of fixture matches to compress cylinder cap 13 with supporting nail 14, and cylinder cap 13 to be pressed on the supporting plane that supporting nail 14 formed at the end face of cylinder cap 13 by hold-down mechanism.As shown in the figure, hold-down mechanism comprises several pressing plates 1 and establishes several support columns on the faceplate 10, and each cylinder cap 13 at least needs three pressing plates 1 to compress.Pressing plate 1 is long strip-board shape, at middle part cover on the support columns, pressing plate 1 is provided with through hole at middle part to pressing plate 1, and the top of each support column is provided with the clamp nut be threaded, on each support column, also cover has Compress Spring 3, this Compress Spring 3 is cylindrically coiled spring, and Compress Spring 3 one end is against on pressing plate 1, and the other end is against the bottom of support column, when clamping, by being screwed down clamp nut, pressing plate 1 can be made to be pressed on cylinder cap 13, pressing plate 1 corresponding with supporting nail 14 position for the end that compresses.Support column in bottom with panel 10 for being threaded, and tight by nut.
Also be provided with the adjusting rod 2 regulated the height of pressing plate 1 on the faceplate 10, adjusting rod 2 and panel 10 are for being threaded, and the end being not used in compression of pressing plate 1 held by adjusting rod 2 in the below of pressing plate 1.Support column and adjusting rod 2 directly can adopt stud.
The seal face of pressing plate 1 is also provided with pressure pad, and pressure pad adopts nylon to make, in case fixture produces excessive permanent compressive strain when clamping to cylinder cap 13, and when changing in time during pressure pad generation excessive deformation in multiple clamping.
The base of fixture comprises and panel 10 base plate 9 connected vertically and the gusset 12 that is located between base plate 9 and panel 10.Base plate 9, for the fixed installation of whole fixture on drilling and milling machine tool, base plate 9 is provided with installing hole, and conventional method can be adopted to be fixed on fixture.Base plate 9 and panel 10 are rectangular slab, and gusset 12 is parallel is provided with two, to guarantee the stable of panel 10.Base plate 9, panel 10 are all connected by screw fastening with gusset 12.
As shown in Figure 1, all right clamping two cylinder caps 13 simultaneously of this fixture, two cylinder caps 13 are arranged side by side, be provided with ten supporting nails 14 on the faceplate 10 altogether, compressed by same center platen 4 in relative side between two cylinder caps 13, compress respectively by two pressing plates 1 at opposite side, center platen 4 is positioned at the centre position of two cylinder caps 13, also overlaps on the support columns.Two ends of this center platen 4 are all for compressing, and support nail 14 position respectively with one corresponding.Two independent pressing plates can be replaced by arranging center platen 4, making the compact conformation of whole fixture, saving manufacturing cost.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.

Claims (5)

1. an engine cylinder cover end face drilling and milling processing method, comprises the clamping operation of cylinder cap being carried out to clamping, it is characterized in that, use special fixture in described clamping operation, clamping operation comprises following step:
(1) fixture is fixed on drilling and milling machine tool, cylinder cap is placed on the panel of fixture;
(2) use the detent mechanism in clamp face plate to complete the location of fixture, detent mechanism comprises the supporting nail that several end faces are plane, and cylinder cap is placed on the supporting plane of supporting nail formation with its bottom surface;
(3) hold-down mechanism in clamp face plate is used to fix cylinder cap;
(4) whether the joint place using the gas check on fixture to detect between supporting nail and cylinder cover bottom surface leaks gas;
(5) if supporting nail leak gas with the joint place of cylinder cover bottom surface, then clamping cylinder cap again, repetition step (2) is to (4); If supporting nail is air tight with the joint place of cylinder cover bottom surface, then complete clamping;
Wherein, described detent mechanism also comprises two alignment pins established on the panel, and one of them is straight pin, and another is rhombus pin; When putting cylinder cap, two of cylinder cover bottom surface locating holes being alignd with two alignment pin position, making alignment pin insert in locating hole;
Described gas check comprises source of the gas, tracheorrhaphy joint and gas-tpe fitting, tracheorrhaphy joint is connected between source of the gas and gas-tpe fitting, the pore leading to end face is provided with in supporting nail, the pore that gas-tpe fitting is followed closely with supporting is connected, the compressed air that source of the gas produces, through tracheorrhaphy joint, gas-tpe fitting and pore, flows to the joint place between the end face of supporting nail and cylinder cover bottom surface.
2. engine cylinder cover end face drilling and milling processing method according to claim 1, it is characterized in that: described tracheorrhaphy joint is connected with described gas-tpe fitting by plastic flexible pipe, plastic flexible pipe is provided with the sensor be connected with alarm, and sensor is for detecting the air pressure in plastic flexible pipe; If sensor detects air pressure in plastic flexible pipe and changes, then indicate that gas leakage occurs, gas leakage signal is sent to alarm by sensor, and alarm starts to report to the police.
3. engine cylinder cover end face drilling and milling processing method according to claim 1 and 2, it is characterized in that: described hold-down mechanism matches with described supporting nail compression cylinder cap, cylinder cap is pressed on the supporting plane of supporting nail formation at the end face of cylinder cap by hold-down mechanism, hold-down mechanism comprises several pressing plates and establishes several support columns on the panel, pressing plate cover on the support columns, the top of support column is provided with clamp nut, on each support column, also cover has cylindrically coiled spring, cylindrically coiled spring one end is against on pressing plate, and the other end is against the bottom of support column.
4. engine cylinder cover end face drilling and milling processing method according to claim 3, is characterized in that: the seal face of described pressing plate is provided with pressure pad.
5. engine cylinder cover end face drilling and milling processing method according to claim 4, is characterized in that: described panel is provided with the adjusting rod regulated the height of described pressing plate, and adjusting rod and panel are for being threaded.
CN201310330043.1A 2013-08-01 2013-08-01 Engine cylinder head end face drilling and milling method Active CN103406783B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
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CN103659439A (en) * 2013-11-29 2014-03-26 大连华根机械有限公司 Pneumatic material availability identifying device
CN106239202A (en) * 2016-10-13 2016-12-21 安徽工程大学 Engine cylinder cover end face bores Milling Machining clamping device and processing method
CN109807549A (en) * 2017-11-22 2019-05-28 江苏恒义汽配股份有限公司 A kind of processing method of new energy car battery case controller module upper bracket

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09159566A (en) * 1995-12-08 1997-06-20 Mitsubishi Motors Corp Leakage test method of engine
CN1619274A (en) * 2004-11-25 2005-05-25 邓永林 Leak detecting equipment
CN101059388A (en) * 2007-05-22 2007-10-24 上海联能机电有限公司 Container air-tightness detection method and its device
JP4085072B2 (en) * 2004-05-12 2008-04-30 株式会社中央精機 Double-sided milling machine
CN202339251U (en) * 2011-12-07 2012-07-18 锐展(铜陵)科技有限公司 Tightness test fixture for engine cylinder cover
CN202668114U (en) * 2012-06-06 2013-01-16 芜湖永裕汽车工业有限公司 Top surface finish-milling clamp for cylinder cover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09159566A (en) * 1995-12-08 1997-06-20 Mitsubishi Motors Corp Leakage test method of engine
JP4085072B2 (en) * 2004-05-12 2008-04-30 株式会社中央精機 Double-sided milling machine
CN1619274A (en) * 2004-11-25 2005-05-25 邓永林 Leak detecting equipment
CN101059388A (en) * 2007-05-22 2007-10-24 上海联能机电有限公司 Container air-tightness detection method and its device
CN202339251U (en) * 2011-12-07 2012-07-18 锐展(铜陵)科技有限公司 Tightness test fixture for engine cylinder cover
CN202668114U (en) * 2012-06-06 2013-01-16 芜湖永裕汽车工业有限公司 Top surface finish-milling clamp for cylinder cover

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