CN102717239A - Method for machining connecting rod of air compressor and drilling and hinging fixture - Google Patents
Method for machining connecting rod of air compressor and drilling and hinging fixture Download PDFInfo
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- CN102717239A CN102717239A CN2012102318113A CN201210231811A CN102717239A CN 102717239 A CN102717239 A CN 102717239A CN 2012102318113 A CN2012102318113 A CN 2012102318113A CN 201210231811 A CN201210231811 A CN 201210231811A CN 102717239 A CN102717239 A CN 102717239A
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Abstract
The invention provides a method for machining a connecting rod of an air compressor and a drilling and hinging fixture and relates to machining of a connecting rod. The method comprises the following steps of performing rough milling on a connecting rod blank to obtain an annular boss plane; turning a small-head hole; milling two side planes of a square block body; marking the steel grade; performing split cutting on a connecting rod body and a rod cover; tapping a screw hole of the rod cover; fixing the connecting rod body and the rod cover into a whole; grinding the combination and the annular boss plane; performing fine boring of a large-head hole and the small-head hole; pressing a bushing into the small-head hole; and rolling the large-head hole and the small-head hole. The method is characterized in that after the process of marking the steel grade is finished, the small-head hole of the connecting rod blank is sleeved into the locating pin of the drilling and hinging fixture in a movable fit manner; the large-head hole is pressed and adhered to the annular boss by use of a press plate so as to be adhered to and located at a flitch in the drilling and hinging fixture; the two side surfaces of the square bock body are jacked and located by virtue of top bolts; two output shafts of a multidrill are lengthened; and after respectively passing through the drilling template and drill sleeve of the drilling and hinging fixture, a step drill bit is aligned with a drilled step hole and the upper hole of the step hole on the hinged square bock body, and then the split cutting process is carried out. The method provided by the invention has the advantages that the locating accuracy and reloading accuracy of once step hole processing are high, and the production process is optimized.
Description
Technical field:
The present invention relates to the machine-tooled method of connecting rod machining, particularly a kind of air-compressor connecting rod and the frock that drills and reams.
Background technology:
Connecting rod is the strength member of air compressor, and function is the reciprocating motion that rotatablely moving of bent axle is changed into piston.Connecting rod is made up of gonnecting rod body, bowl cover, lining, connection bolt.Gonnecting rod body is shaped as the siamese part of upper axis body, middle part long plate shape body, bottom packet.Packet lower surface, bottom is provided with the semicircle orifice that Open Side Down, and front/rear end protruding semicircle boss in semicircle orifice outer is respectively arranged with longitudinal hole on the bottom packet of semicircle orifice both sides.Bowl cover packet upper surface is provided with the semicircle orifice that opening makes progress, the protruding semicircle boss of semicircle orifice outer front/rear end, and the semicircle orifice both sides are respectively arranged with vertical stepped hole.Gonnecting rod body, bowl cover are to be formed by the machined of connecting rod blank, and the connecting rod blank shape is the siamese part of upper axis body, middle part long plate shape body, the full packet in bottom.Bottom full packet central authorities are provided with big end hole, the respectively protruding annulus boss of big end hole outer front/rear end.The gonnecting rod body longitudinal hole is coaxial isometrical as gonnecting rod body and the fit locating hole that is connected of bowl cover with the vertical stepped hole upper hole of bowl cover, is inserted in to connect bolt enforcement location and fixed connection.
Existing processing technology is: the connecting rod blank is rough milled annulus boss plane, corase grind front and back; The microcephaly hole of car system upper axis body; Mill plane, full packet two sides; Beat grade of steel; The complete horizontal split of packet cuts into gonnecting rod body and bowl cover; Milling gonnecting rod body and bowl cover faying face; Bore system and two longitudinal holes of articulation gonnecting rod body; Bore two vertical stepped holes of system bowl cover; Two vertical stepped holes of articulation bowl cover; Bowl cover stepped hole bottom hole tapping; Connecting bolt passes the gonnecting rod body longitudinal hole and twists to be combined in and implement gonnecting rod body in the bowl cover lower thread hole and fix with the bowl cover location is fit; Annulus raised head face behind the correct grinding zoarium; Right boring concentric reducer hole; In the microcephaly hole, be pressed into lining; With roll extrusion burnishing-in cutter roll extrusion concentric reducer hole.
This processing technology is after the connecting rod blank mills out, and respectively the locating hole of gonnecting rod body and bowl cover is processed one by one, i.e. first another hole of tune processing again behind the processing hole wherein again; Because the positioning accuracy request in the process is very high; Thereby unstable product quality, the low precision of resetting under combination difficulty (the normal appearance suppressed dead phenomenon because of two locating hole centre-to-centre spacing errors) the while free state, worst error reaches 0.1mm; And this technological process is long; Efficient is low, and the occupancy of equipment is big, and the production space also takies many.
Because the particularity of connecting rod two locating holes; Because of the threaded portion of its locating hole on bowl cover; Thread Pilot hole is littler than locating hole, disposable and comes outbreak out this stepped hole, must down bore from block upper surface, connecting rod below; Because of the length of connecting rod all more than 200mm, common processing mode can't meet the demands.
In fact multi-drill is an existing equipment, but the drill chuck clamping drilling bit is bored system to porous simultaneously on the multi-drill output shaft, but multi-drill output shaft length is not enough, and the connecting rod blank does not have suitable positioning fixture can't process yet.In order to improve machining accuracy, work efficiency, how to adopt multi-drill to bore the problem of system two Kong Shiwo companies research.
Summary of the invention:
The objective of the invention is to overcome above-mentioned defective, a kind of machine-tooled method of air-compressor connecting rod and the frock that drills and reams are provided.
Scheme of the present invention is: comprise the rough milling annulus boss plane, car system microcephaly hole, mill full packet two side planes, beat grade of steel of connecting rod base substrate, gonnecting rod body and bowl cover split cutting, attack system bowl cover screwed hole, fit fixing, the assembly annulus boss flat surface grinding of gonnecting rod body and bowl cover, right boring concentric reducer hole, microcephaly hole pressure lining, roll extrusion concentric reducer hole; It is characterized in that: after beating the grade of steel operation connecting rod blank is installed on the frock that drills and reams; The microcephaly hole is inserted in the tool locating pin cylindrical that drills and reams, big end hole movingly and is overlayed with pressing plate and its annulus boss rear end face is fitted drill and ream in the frock pasting board implement fit be locked location, full packet two sides, plane to push up the subsides positioning and locking with the frock both sides side top fastening bolt that drills and reams respectively; Multi-drill two output shafts lengthening; The step drill bit that its end drill chuck is installed bores the system stepped hole to full packet after passing two the bore template drill bushings of frock that drill and ream respectively; The full packet stepped hole of articulation upper hole then gets into gonnecting rod body and bowl cover split cutting action.
The drill and ream scheme of frock of the present invention is: by bolted base plate, middle riser, vertical plates on both sides, two bore templates each other; And alignment pin, pressing plate are formed; It is tabular that base plate and middle riser are inverted T-shape; Vertical plates on both sides is divided subsides inverted T-shape plate two sides, and bore template and cant board are down L shaped shape and horizontal in neutral front edge of board face, and two bore templates are symmetrically distributed; Its inner face spacing is greater than connecting rod blank middle part long plate shape body width; Fit is fixed with step sleeve-like drill bushing in the interior side through hole of bore template, and two step sleeve-like drill bushing axial line spacings equal connecting rod blank both sides stepped hole axial line spacing, and the screwed hole axial line spacing that stepped hole that middle riser top is provided with and middle riser bottom are provided with equals connecting rod blank microcephaly hole and big end hole axial line spacing; The left side threaded column of a step-like double thread post is enclosed within movingly to twist behind the pasting board medium pore in the annulus plate-like and is combined in the middle riser lower thread hole; With interior pasting board fit be fixed on the riser, be sheathed with movingly on the threaded column of double thread post right side with interior pasting board with the pressing plate of shape and pad, nut, the external diameter of interior pasting board, pressing plate is greater than connecting rod blank annulus boss external diameter; The alignment pin cylindrical is a step axle shape; Interior circle is stepped hole; The little axis body of alignment pin is inserted in the macropore in middle riser upper step hole after passing pad movingly; After a bolt is inserted in alignment pin stepped hole macropore, implements alignment pin on the internal thread of riser upper step hole aperture during the front end screw thread is twisted and is combined in and be fixedly connected with middle riser; Equal altitudes is respectively arranged with screwed hole to vertical plates on both sides in middle riser lower thread hole, and both sides side top fastening bolt is twisted respectively and is combined in the vertical plates on both sides screwed hole.
The invention has the advantages that: two holes of the vertical stepped hole of gonnecting rod body longitudinal hole and bowl cover are disposable accurate positionings that process, two hole centre-to-centre spacing, aperture unanimity, accurate positioning.Gonnecting rod body after milling out, bowl cover faying face needn't be processed again, and faying face keeps original state basically, make combination more smooth, and the refitting precision under the free state high (error is below 0.04) has been optimized production technology simultaneously, has shortened technological process.
Description of drawings:
Fig. 1 is a connecting rod sketch map of the present invention.
Fig. 2 is the drill and ream front view of frock of connecting rod blank suit of the present invention.
Fig. 3 is the A-A cutaway view of Fig. 2.
The specific embodiment:
Structure of the present invention: it is characterized in that: by bolted base plate 10 each other, middle riser 5, vertical plates on both sides 8, two bore templates 6; And alignment pin 4, pressing plate 14 formed; It is tabular that base plate 10 and middle riser 5 are inverted T-shape; Vertical plates on both sides was pasted inverted T-shape plate two sides in 8 minutes; Bore template 6 is down L shaped shape and horizontal in middle riser 5 front end faces with cant board 8; Two bore templates 6 are symmetrically distributed, and its inner face spacing is greater than connecting rod blank middle part long plate shape body width, and fit is fixed with step sleeve-like drill bushing 11 in the bore template 6 interior side through hole; Two step sleeve-like drill bushing 11 axial line spacings equal connecting rod blank both sides stepped hole axial line spacing; In riser 5 tops stepped hole that is provided with and the screwed hole axial line spacing that middle riser 5 bottoms are provided with equal connecting rod blank microcephaly hole 1 and big end hole 3 axial line spacings, the left side threaded column of a step-like double thread post 13 be enclosed within movingly twist behind pasting board 15 medium pores in the annulus plate-like be combined in in the riser 5 lower thread holes, interior pasting board 15 fitted to be fixed on the middle riser 5; Be sheathed with movingly on the double thread post 13 right side threaded column with interior pasting board 15 with the pressing plate 14 of shape and pad, nut, the external diameter of interior pasting board 15, pressing plate 14 is greater than connecting rod blank annulus boss 2 external diameters; Alignment pin 4 cylindricals are step axle shape; Interior circle is stepped hole; Alignment pin 4 little axis bodies are inserted in the macropore in middle riser 5 upper step holes after passing pad movingly; After a bolt is inserted in alignment pin 4 stepped hole macropores, implements alignment pin 4 on the internal thread of riser 5 upper step hole apertures during the front end screw thread is twisted and is combined in and be fixedly connected with middle riser 5; Vertical plates on both sides 8 is respectively arranged with screwed hole at middle riser 5 lower thread hole equal altitudes, and both sides side top fastening bolt 9 is twisted respectively and is combined in vertical plates on both sides 8 screwed holes.
Frock is installed on the multi-drill work top.Earlier connecting rod blank microcephaly hole 1 is linked in the frock on riser 5 top alignment pins 4 cylindricals during boring; The double thread post 13 of riser 5 during big end hole 3 passes; One of which side annulus boss 2 end faces are fitted on interior pasting board 15 outer faces of frock, again pressing plate 14 medium pores, pad medium pore are inserted in double thread post 13 right side threaded column, with nut pressing plate 14 are overlayed on connecting rod blank outside annulus boss 2; After the side top fastening bolt 9 on the vertical plates on both sides 8 is turned; The top is attached on the two sides of the full packet 7 of connecting rod blank respectively, and the connecting rod blank is located in frock, and back multi-drill two step drill bits in location bore down.Multi-drill output shaft amount of elongation satisfies the length condition of on the connecting rod blank, accomplishing step hole drill system.Step drill bit upper drill bit external diameter equals connecting rod blank longitudinal hole internal diameter, and step drill bit bottom outside diameter equals connecting rod blank stepped hole bottom hole internal diameter.
After two location hole drills are good, utilize another multi spindle drilling machine and the another set of frock that drills and reams just can ream to connecting rod.Mill out split to the connecting rod blank more afterwards, bowl cover 17 is carried out tapping, gonnecting rod body 16 need not mill and grind with bowl cover 17 faying faces, as long as directly make up behind the burr of its faying face of removal.
Also be provided with two coolant outlets 12 on the middle riser 5, supply water for when supplying boring drill bit, workpiece and cool off.
Use technology of the present invention and frock processing connecting rod; Simplify working process, improve machining accuracy, reduced processing cost, also can guarantee connecting rod assembly quality stability simultaneously, improved production efficiency; Alleviate working strength of workers, the more important thing is the input amount that has reduced equipment funds.
Claims (2)
1. the machine-tooled method of an air-compressor connecting rod; Comprise the rough milling annulus boss (2) plane, car system microcephaly hole (1), mill full packet two side planes, beat grade of steel of connecting rod base substrate, gonnecting rod body (16) and bowl cover (17) split cutting, attack system bowl cover screwed hole, fit fixing, assembly annulus boss (2) flat surface grinding of gonnecting rod body (16) and bowl cover (17), right boring concentric reducer hole (3,1), microcephaly hole (1) press lining, roll extrusion concentric reducer hole (3,1); It is characterized in that: after beating the grade of steel operation connecting rod blank is installed on the frock that drills and reams; Microcephaly hole (1) is inserted in tool locating pin (4) cylindrical that drills and reams, big end hole (3) movingly and is overlayed with pressing plate (14) and its annulus boss (2) rear end face is fitted drill and ream in the frock pasting board (15) implement fit be locked location, full packet two sides, plane to push up the subsides positioning and locking with the frock both sides side top fastening bolts (9) that drill and ream respectively; Multi-drill two output shafts lengthening; The step drill bit that its end drill chuck is installed passes two bore templates of frock (6) drill bushings (11) back that drills and reams respectively full packet is bored the system stepped hole; The full packet stepped hole of articulation upper hole then gets into gonnecting rod body (16) and bowl cover (17) split cutting action.
2. the machined of the air-compressor connecting rod frock that drills and reams; It is characterized in that: by bolted base plate (10), middle riser (5), vertical plates on both sides (8), two bore templates (6) each other; And alignment pin (4), pressing plate (14) are formed; It is tabular that base plate (10) and middle riser (5) are inverted T-shape; Vertical plates on both sides (8) is divided subsides inverted T-shape plate two sides; Bore template (6) is down L shaped shape and horizontal in middle riser (5) front end face with cant board (8); Two bore templates (6) are symmetrically distributed, and its inner face spacing is greater than connecting rod blank middle part long plate shape body width, and fit is fixed with step sleeve-like drill bushing (11) in the interior side through hole of bore template (6); Two step sleeve-like drill bushings (11) axial line spacing equals connecting rod blank both sides stepped hole axial line spacing; In riser (5) top stepped hole that is provided with and the screwed hole axial line spacing that middle riser (5) bottom is provided with equal connecting rod blank microcephaly hole (1) and big end hole (3) axial line spacing, the left side threaded column of a step-like double thread post (13) is enclosed within movingly to twist behind pasting board (15) medium pore in the annulus plate-like and is combined in middle riser (5) the lower thread hole, and interior pasting board (15) applying is fixed on the middle riser (5); Be sheathed with movingly on the threaded column of double thread post (13) right side with interior pasting board (15) with the pressing plate (14) of shape and pad, nut, the external diameter of interior pasting board (15), pressing plate (14) is greater than connecting rod blank annulus boss (2) external diameter; Alignment pin (4) cylindrical is a step axle shape; Interior circle is stepped hole; The little axis body of alignment pin (4) is inserted in the macropore in middle riser (5) upper step hole after passing pad movingly; After a bolt was inserted in alignment pin (4) stepped hole macropore, the front end screw thread was twisted and to be implemented alignment pin (4) on the internal thread be combined in middle riser (5) upper step hole aperture and be fixedly connected with middle riser (5); Equal altitudes is respectively arranged with screwed hole to vertical plates on both sides (8) in middle riser (5) lower thread hole, and both sides side top fastening bolts (9) are twisted respectively and are combined in vertical plates on both sides (8) screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231811.3A CN102717239B (en) | 2012-07-03 | 2012-07-03 | Method for machining connecting rod of air compressor and drilling and hinging fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231811.3A CN102717239B (en) | 2012-07-03 | 2012-07-03 | Method for machining connecting rod of air compressor and drilling and hinging fixture |
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| Publication Number | Publication Date |
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| CN102717239A true CN102717239A (en) | 2012-10-10 |
| CN102717239B CN102717239B (en) | 2014-04-16 |
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| CN201210231811.3A Active CN102717239B (en) | 2012-07-03 | 2012-07-03 | Method for machining connecting rod of air compressor and drilling and hinging fixture |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103084784A (en) * | 2013-01-28 | 2013-05-08 | 中国人民解放军第五七二一工厂 | Reassembly component multi-hole assembling precise off-location hole processing method |
| CN103481080A (en) * | 2013-10-10 | 2014-01-01 | 柳州明宇机械有限公司 | Connecting rod big-end hole turning clamp |
| CN103801956A (en) * | 2012-11-09 | 2014-05-21 | 天津建筑机械厂 | Stopper boring tool |
| CN104084615A (en) * | 2014-06-29 | 2014-10-08 | 柳州美纳机械有限公司 | Machining method of ring support |
| CN104148954A (en) * | 2014-06-29 | 2014-11-19 | 柳州美纳机械有限公司 | Annular support drilling clamp |
| CN104162793A (en) * | 2014-05-16 | 2014-11-26 | 苏州工业职业技术学院 | Dual-positioning floating turning clamp |
| CN104209696A (en) * | 2013-05-30 | 2014-12-17 | 南昌市科兴机械有限公司 | Novel air compressor main support machining method |
| CN104526014A (en) * | 2014-12-09 | 2015-04-22 | 重庆迪科汽车研究有限公司 | Rocking bar arm fixing drill die |
| CN107052487A (en) * | 2017-05-11 | 2017-08-18 | 广东工业大学 | A kind of linear cutter automobile diagonal control arm splitter quick clamping device |
| CN107262854A (en) * | 2017-05-11 | 2017-10-20 | 广东工业大学 | A kind of linear cutter automobile straight connecting rod splitter quick clamping device |
| CN107443120A (en) * | 2017-08-25 | 2017-12-08 | 安徽信息工程学院 | Connection rod of automobile engine microcephaly face milling processes clamping device |
| CN108237375A (en) * | 2017-12-04 | 2018-07-03 | 安徽未来机电科技有限公司 | A kind of end face drilling technology of retarder connecting rod |
| CN111085886A (en) * | 2020-01-16 | 2020-05-01 | 中核(天津)科技发展有限公司 | Positioning device for cutting and processing special-shaped parts |
| CN113579312A (en) * | 2021-08-03 | 2021-11-02 | 天润工业技术股份有限公司 | Support drilling clamp |
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| CN103801956A (en) * | 2012-11-09 | 2014-05-21 | 天津建筑机械厂 | Stopper boring tool |
| CN103084784A (en) * | 2013-01-28 | 2013-05-08 | 中国人民解放军第五七二一工厂 | Reassembly component multi-hole assembling precise off-location hole processing method |
| CN104209696A (en) * | 2013-05-30 | 2014-12-17 | 南昌市科兴机械有限公司 | Novel air compressor main support machining method |
| CN103481080A (en) * | 2013-10-10 | 2014-01-01 | 柳州明宇机械有限公司 | Connecting rod big-end hole turning clamp |
| CN104162793A (en) * | 2014-05-16 | 2014-11-26 | 苏州工业职业技术学院 | Dual-positioning floating turning clamp |
| CN104084615A (en) * | 2014-06-29 | 2014-10-08 | 柳州美纳机械有限公司 | Machining method of ring support |
| CN104148954A (en) * | 2014-06-29 | 2014-11-19 | 柳州美纳机械有限公司 | Annular support drilling clamp |
| CN104526014A (en) * | 2014-12-09 | 2015-04-22 | 重庆迪科汽车研究有限公司 | Rocking bar arm fixing drill die |
| CN107052487A (en) * | 2017-05-11 | 2017-08-18 | 广东工业大学 | A kind of linear cutter automobile diagonal control arm splitter quick clamping device |
| CN107262854A (en) * | 2017-05-11 | 2017-10-20 | 广东工业大学 | A kind of linear cutter automobile straight connecting rod splitter quick clamping device |
| CN107052487B (en) * | 2017-05-11 | 2019-02-15 | 广东工业大学 | A kind of linear cutter automobile diagonal control arm splitter quick clamping device |
| CN107262854B (en) * | 2017-05-11 | 2019-02-15 | 广东工业大学 | A kind of linear cutter automobile straight connecting rod splitter quick clamping device |
| CN107443120A (en) * | 2017-08-25 | 2017-12-08 | 安徽信息工程学院 | Connection rod of automobile engine microcephaly face milling processes clamping device |
| CN108237375A (en) * | 2017-12-04 | 2018-07-03 | 安徽未来机电科技有限公司 | A kind of end face drilling technology of retarder connecting rod |
| CN111085886A (en) * | 2020-01-16 | 2020-05-01 | 中核(天津)科技发展有限公司 | Positioning device for cutting and processing special-shaped parts |
| CN113579312A (en) * | 2021-08-03 | 2021-11-02 | 天润工业技术股份有限公司 | Support drilling clamp |
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| CN102717239B (en) | 2014-04-16 |
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Denomination of invention: A machining method and drilling and reaming tooling for connecting rod of air compressor Effective date of registration: 20211011 Granted publication date: 20140416 Pledgee: Yongan sub branch of China Post Savings Bank Co.,Ltd. Pledgor: YONGAN JINSHENG MACHINERY Co.,Ltd. Registration number: Y2021350000129 |
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