CN102699667B - Tool for pressing small copper sleeve of engine connecting rod - Google Patents
Tool for pressing small copper sleeve of engine connecting rod Download PDFInfo
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- CN102699667B CN102699667B CN201210224364.9A CN201210224364A CN102699667B CN 102699667 B CN102699667 B CN 102699667B CN 201210224364 A CN201210224364 A CN 201210224364A CN 102699667 B CN102699667 B CN 102699667B
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- connecting rod
- guide pillar
- copper sheathing
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- gland
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Abstract
The invention discloses a tool for pressing a small copper sleeve of an engine connecting rod. The tool comprises a liner plate, a pressing sleeve, and a base fixed on a press, wherein a guide post is arranged inside an unthreaded hole at one end of the base corresponding to the pressing sleeve; the guide post is a stepped shaft which is thick in lower part and thin in upper part; a rack is arranged at the lower end of the guide post; a gear shaft meshed with the rack is arranged at one side of the rack; a locating sleeve of which the upper end face is matched with an lower end face of the copper sleeve and the diameter corresponds to the copper sleeve is arranged on the step of the guide post; a bush for pressing the copper sleeve is sleeved on the upper end of the guide post, wherein the lower end surface of the bush is matched with the upper end face of the copper sleeve; a diamond locating pin matched with the aperture of a large end of the connecting rod is arranged at the other end of the base; an inner hole of the pressing sleeve is a step hole which is large in lower part and small in upper part; the aperture of the small end of the step hole is smaller than the guide post; and the lower end face of the pressing sleeve is the inclined plane matched with that of the small head of the connecting rod, and a locating pin is arranged at the position of the inclined plane on the lower end of the pressing sleeve, corresponding to the plane end of the small end of the connecting rod. The tool disclosed by the invention is accurate in positioning and convenient to operate, and the pressing efficiency is improved.
Description
Technical field
The present invention relates to a kind of press mounting tool of mechanical engineering field, specifically a kind of instrument that is used for press mounting copper.
Background technology
Connecting rod small end of engine copper sheathing plays a part to transmit cylinder-firing pressure and guiding, and its performance quality directly affects quality and the reliability of engine.The microcephaly of engine link has a circular hole that copper sheathing is installed, and the end face at circular hole two ends is inclined-plane, and circular hole inclined-plane great Duan edge is plane.For coupler link microcephaly inclined-plane, copper sheathing is circular tube shaped, and the two ends of pipe are inclined-plane, and there is a semicircle breach radially at inclined-plane, lower end and intersection place, horizontal middle section.Because the structure of copper sheathing is more special, the accuracy of copper sheathing pressure-mounting position is also particularly important.
Existing copper sheathing pressure-mounting method is first connecting rod to be lain on the workbench of forcing press, the microcephaly of connecting rod aims at the pressure head of forcing press, in connecting rod small end hole, pass a locating shaft, locating shaft is the multidiameter of a lower thick upper thin, the diameter of multidiameter bottom is corresponding with the aperture of small end of connecting rod end, and the diameter on multidiameter top is less than the aperture of small end of connecting rod end.One section of positioning sleeve is set on the axle on top, locating shaft ladder place, the external diameter of positioning sleeve is consistent with copper sheathing external diameter, positioning sleeve upper surface has the ramp structure coordinating with copper sheathing, and there is a pin-and-hole radially at the intersection place of inclined-plane, positioning sleeve upper end and horizontal middle section, pin of plug-in mounting in pin-and-hole.While press-fiting front placement inclined-plane copper sheathing, copper sheathing is enclosed within on locating shaft, the lower surface of copper sheathing contacts with positioning sleeve upper surface, and the semicircle breach of inclined-plane copper sheathing coordinates with pin.Connection backing plate below press ram, the endoporus of backing plate connects gland by key, gland lower surface beveling, while pressing down, inclined-plane, gland lower end matches with inclined-plane, copper sheathing upper surface.Press ram presses down and drives gland to decline, and gland directly presses down copper sheathing, the related locating shaft of copper sheathing is moved downward together, until copper sheathing is pressed into small end of connecting rod.
Current copper sheathing pressure-mounting technique exists following shortcoming: only by locating shaft, locate, although have the auxiliary definite copper sheathing position of positioning sleeve and angle, engine link easily rocks, and can not accurately locate.A whole set of positioner can not play the effect being completely fixed, and the more difficult assurance in position of copper sheathing pressure-mounting is easily pressed copper sheathing askew.Locating shaft is manual controls, and cannot fix, and the inconvenience that operates, easily drops in forcing press lathe, press-fits efficiency low.
Summary of the invention
The technical problem to be solved in the present invention is to provide and a kind ofly can accurately locates, easy to operate engine link copper sheathing press-fit specific purpose tool.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Connecting rod small end of engine copper sheathing pressure-mounting instrument, comprise and be arranged on the backing plate under press ram and be connected to the gland below backing plate, also comprise the base being fixed on press bench, in the unthreaded hole of one end of the corresponding gland of base, install a guide pillar coordinating with microcephaly's stomidium footpath of connecting rod, described guide pillar is the multidiameter of a lower thick upper thin, guide pillar lower end is provided with tooth bar, one side setting of tooth bar and tooth bar meshed gears axle, the ladder place of guide pillar arranges upper surface and coordinates with the lower surface of copper sheathing, the positioning sleeve that diameter is corresponding with copper sheathing, the lining for press mounting copper that the Tao Youyi lower surface, upper end of guide pillar coordinates with the upper surface of copper sheathing, the diamond positioning pin coordinating with the stub end aperture of connecting rod is installed at the base other end, the endoporus of described gland is up-small and down-big shoulder hole, and shoulder hole small end aperture is less than guide pillar, and gland lower surface is the inclined-plane mating with the inclined-plane of small end of connecting rod, and the position of inclined-plane, gland lower end respective link microcephaly planar ends arranges an alignment pin.
Further improvement of the present invention is: described base fixedly mounts an axle sleeve through the unthreaded hole place of the upper surface of guide pillar one end.
Further improvement of the present invention is: a side of the corresponding base side wall in described guide pillar lower end arranges one section of chute, and base side wall arranges and coordinates the bolt that holds out against chute.
Further improvement of the present invention is: the two ends of described gear shaft are all set to bearings, wherein there is the guide pin bushing of the flange coordinating with bearing cap the bearing cap arranged outside end of one end, the guide pin bushing other end is connected with gear shaft by key, guide pin bushing periphery suit Compress Spring, the packing ring with nut pretension is installed in Compress Spring outside; The other end of gear shaft arranges handwheel.
Owing to having adopted technique scheme, the obtained technological progress of the present invention is:
The present invention is a kind of specific purpose tool that is used for press-fiting connecting rod small end of engine copper sheathing in mechanical engineering field, and accurate positioning is easy to operate, has improved the efficiency press-fiting.By guide pillar stationary links microcephaly, diamond positioning pin stationary links major part, locks connecting rod completely.Positioning sleeve is set on guide pillar and by pin, is connected with copper sheathing, guarantee that press-fiting copper sheathing in process does not rotate and be offset.While press-fiting, the step place of gland shoulder hole presses down lining, guide pillar, drives lining, copper sheathing, positioning sleeve to move downward simultaneously, stress equalization, and the lower surface of gland directly do not contact with copper sheathing, can prevent the stressed excessive copper sheathing distortion that causes of copper sheathing.When the alignment pin that gland lower end arranges has press-fited, support the plane place to small end of connecting rod, can more accurately locate the position after copper sheathing pressure-mounting.
The present invention coordinates with axle sleeve by guide pillar, and the mode that axle sleeve coordinates with base unthreaded hole again can reduce and press-fit rocking of guide pillar in process, makes that whole to press-fit process more steady.
The chute that guide pillar of the present invention one side arranges and the bolt mating reaction of base side wall, not only can determine and the stroke of guide pillar prevent that guide pillar from dropping; Can also prevent from press-fiting guide pillar in process and rotate, so that copper sheathing is accurately located.
The present invention, by the acting in conjunction of guide pin bushing, Compress Spring and packing ring, can make the guide pillar of manually being controlled by handwheel rest on easily the optional position in stroke, convenient operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A partial sectional view of Fig. 1;
Fig. 3 is the right view of the gear shaft part of Fig. 1.
In figure: 1, base, 2, axle sleeve, 3, guide pillar, 4, positioning sleeve, 5, gland, 6, backing plate, 7, lining, 8, alignment pin, 9, diamond positioning pin, 10, pin, 11, packing ring, 12, Compress Spring, 13, gear shaft, 14, handwheel, 15, guide pin bushing.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The press mounting tool of connecting rod small end of engine copper sheathing, as Figure 1-3, is mainly comprised of base 1, guide pillar 3, gland 5, diamond positioning pin 9, gear shaft 13, handwheel 14.
As shown in Figure 1, base 1 is fixed on forcing press, two unthreaded holes of upper surface processing of base 1.The axle sleeve 2 that the unthreaded hole suit in base 1 left side coordinates with unthreaded hole, the interior placement guide pillar 3 of axle sleeve 2.Guide pillar 3 is the multidiameter of a lower thick upper thin, and the diameter of multidiameter bottom is corresponding with the aperture of small end of connecting rod end, and the diameter on multidiameter top is less than the aperture of small end of connecting rod end.The left side of guide pillar 3 bottoms processes one section of chute, is screwed into bolt holds out against chute to determine guide pillar stroke from base 1 sidewall installation; Tooth bar is processed on the right side of guide pillar 3 bottoms, and gear shaft 13 engagements of tooth bar and a side form transmission system.Guide pillar 3 top, ladder place suit positioning sleeves 4.The external diameter of positioning sleeve 4 is consistent with the external diameter of copper sheathing, and the lower surface of positioning sleeve 4 and guide pillar 3 ladder places join, and the upper surface of positioning sleeve 4 is inclined-plane, and during use, upper surface coordinates and contacts with the lower surface of copper sheathing.The intersection place of positioning sleeve 4 inclined-planes, upper end and horizontal middle section radially processes a pin-and-hole, and pin 10 is installed in pin-and-hole.The unthreaded hole on base 1 right side is used for installing diamond positioning pin 9, and diamond positioning pin 9 is for stationary links major part, and with the guide pillar 3 synergy stationary links that small end of connecting rod place is passed, while guaranteeing press mounting copper, connecting rod does not rotate, is shifted.
With reference to figure 1 and Fig. 2, because copper sheathing is notched ramp structure, while placing copper sheathing, require copper sheathing indentation, there to aim at pin 10, for determining installation site and the angle of copper sheathing simultaneously.While press-fiting, copper sheathing upper surface is mounting bush 7 also, and lining 7 external diameters are slightly less than copper sheathing, and the lower surface of lining 7 and copper sheathing inclined-plane join, and upper surface flushes with guide pillar 3 upper surfaces.
Below press ram, connection backing plate 6, and backing plate 6 is connected and installed gland 5 by key.The endoporus of gland 5 is up-small and down-big shoulder hole, and the hole of shoulder hole lower end coordinates with lining 7, and the aperture of upper end is less than the internal diameter of guide pillar.The inclined-plane matching with copper sheathing inclined-plane is made in gland 5 lower surfaces, in press-fiting process, the shoulder hole step place of gland 5 contacts with guide pillar 3, drives lining 7, copper sheathing, positioning sleeve 4 to move downward simultaneously, gapped between the lower surface of gland 5 and copper sheathing inclined-plane, do not contact with copper sheathing; Right side, Ji Tu1 inclined-plane, position in lower surface respective link microcephaly planar ends arranges an alignment pin 8, when gland 5 presses to, coordinates while joining with guide pillar 3, and alignment pin 8 lower surfaces should flush with copper sheathing inclined-plane highest point.
As shown in Figure 3, one side of guide pillar 3 tooth bars is fixedly installed the gear shaft 13 coordinating with it, the two ends of gear shaft 13 are first fixed by bearings, and at one end bearing cap outside by being equipped with one section of guide pin bushing 15 with gear shaft keyway, Compress Spring 12 is settled in guide pin bushing 15 outsides, after Compress Spring 12 outside cover upper gaskets 11, uses nut screwing clamping.Utilize the frictional force of restoring force and the packing ring 11 of Compress Spring 12, can overcome the Action of Gravity Field of guide pillar 3, the gear drive that gear shaft 13 and guide pillar 3 are formed rests on optional position in stroke.The other end of gear shaft 13 is connected with handwheel 14, is convenient to manually control the position of guide pillar 3.
Use procedure of the present invention is: base 1 is fixed on forcing press, fixing BB1 3 should be under press ram, first rotate handwheel 14, gear drive by gear shaft 13 and guide pillar 3 is shaken minimum point 3 times guide pillar, to need the engine link horizontal positioned of press mounting copper to base, the endoporus of axle sleeve 2 be aimed in microcephaly hole, and major part is tentatively fixed on base 1 with diamond positioning pin 9, now do not need to screw diamond positioning pin 9, the convenient position angle of adjusting connecting rod afterwards.Then rotate handwheel 14, make guide pillar 3 straight lines increase, first, by the endoporus of axle sleeve 2, then in connecting rod small end hole, pass, be rotated further handwheel 14, above shake guide pillar 3 until the interior extreme higher position of stroke.Then adjust connecting rod position, screw diamond positioning pin 9 and compress big ends, now by guide pillar 3 and diamond positioning pin 9 synergies, can be completely fixed connecting rod position, prevent in press mounting copper process connecting rod stressedly rotate, mobile, there is deviation.
The copper sheathing that needs are press-fited, through guide pillar 3, joins with positioning sleeve 4 upper surfaces, and copper sheathing indentation, there is aimed at the pin 10 of positioning sleeve 4 upper surfaces.Lining 7 is placed in copper sheathing upper surface, and lining 7 is through guide pillar 3, and lower surface and copper sheathing inclined-plane join, and upper surface flushes with guide pillar 3 upper surfaces.Under press ram, connection backing plate 6, and gland 5 is coordinated and is connected with backing plate 6 by keyway.In press ram decline process, by pressure head, drive gland 5 to move downward, the interior hole end surface of gland 5 first contacts with guide pillar 3 upper surfaces, while continuing to press down, lining 7 on guide pillar 3, copper sheathing, positioning sleeve 4 move downward in company with guide pillar 3 simultaneously, when the alignment pin 8 on gland 5 right sides, inclined-plane props up small end of connecting rod, illustrate that copper sheathing has pressed fit into small end of connecting rod, and the position of copper sheathing is the accurate location of requirement.Take off afterwards lining 7, rotate handwheel 14, turn down guide pillar 3, dismounting connecting rod, this press-fits process and completes.
Claims (4)
1. connecting rod small end of engine copper sheathing pressure-mounting instrument, comprise and be arranged on the backing plate (6) of press ram lower end and be connected to backing plate (6) gland (5) below, it is characterized in that: also comprise the base (1) being fixedly connected on press bench, in the unthreaded hole of one end of the corresponding gland of base (1) (5), install a guide pillar (3) coordinating with microcephaly's stomidium footpath of connecting rod, described guide pillar (3) is the multidiameter of a lower thick upper thin, guide pillar (3) lower end is provided with tooth bar, one side setting of tooth bar and tooth bar meshed gears axle (13), the ladder place of guide pillar (3) arranges upper surface and coordinates with the lower surface of copper sheathing, the positioning sleeve that diameter is corresponding with copper sheathing (4), the lining for press mounting copper (7) that the Tao Youyi lower surface, upper end of guide pillar (3) coordinates with the upper surface of copper sheathing, the diamond positioning pin (9) coordinating with the stub end aperture of connecting rod is installed at base (1) other end, the endoporus of described gland (5) is up-small and down-big shoulder hole, shoulder hole small end aperture is less than guide pillar (3), gland (5) lower surface is the inclined-plane mating with the inclined-plane of small end of connecting rod, and the position of gland (5) inclined-plane, lower end respective link microcephaly planar ends arranges an alignment pin (8).
2. connecting rod small end of engine copper sheathing pressure-mounting instrument according to claim 1, is characterized in that: described base (1) fixedly mounts an axle sleeve (2) through the unthreaded hole place of the upper surface of guide pillar (3) one end.
3. connecting rod small end of engine copper sheathing pressure-mounting instrument according to claim 2, is characterized in that: a side of corresponding base (1) sidewall in described guide pillar (3) lower end arranges one section of chute, and base (1) sidewall arranges and coordinates the bolt that holds out against chute.
4. according to the connecting rod small end of engine copper sheathing pressure-mounting instrument described in claim 1～3 any one, it is characterized in that: the two ends of described gear shaft (13) are all set to bearings, wherein there is the guide pin bushing (15) of the flange coordinating with bearing cap the bearing cap arranged outside end of one end, guide pin bushing (15) other end is connected with gear shaft (13) by key, guide pin bushing (15) periphery suit Compress Spring (12), the packing ring (11) with nut pretension is installed in Compress Spring (12) outside; The other end of gear shaft (13) arranges handwheel (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210224364.9A CN102699667B (en) | 2012-07-02 | 2012-07-02 | Tool for pressing small copper sleeve of engine connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210224364.9A CN102699667B (en) | 2012-07-02 | 2012-07-02 | Tool for pressing small copper sleeve of engine connecting rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102699667A CN102699667A (en) | 2012-10-03 |
| CN102699667B true CN102699667B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210224364.9A Active CN102699667B (en) | 2012-07-02 | 2012-07-02 | Tool for pressing small copper sleeve of engine connecting rod |
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| CN (1) | CN102699667B (en) |
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| CN104339179B (en) * | 2013-07-25 | 2016-08-24 | 江苏林海动力机械集团有限公司 | Engine case of motorcycle processing auxiliary support apparatus |
| CN103586666B (en) * | 2013-11-01 | 2016-03-16 | 力帆实业(集团)股份有限公司 | For press-fiting the frock of timing driving tooth on toggle |
| CN104043959B (en) * | 2014-06-20 | 2016-07-27 | 江苏贸隆机械制造有限公司 | A kind of press-fitting tool for assembling rail vehicle drawing pull bar |
| CN104117846B (en) * | 2014-07-23 | 2017-02-15 | 中国船舶重工集团公司第七一一研究所 | Installation tool of connecting rod small end lining and using method of installation tool |
| CN105298705B (en) * | 2015-10-23 | 2017-11-24 | 北京航科发动机控制系统科技有限公司 | A kind of method for ensureing that bearing and bushing fasten by dynamometry |
| CN105904406B (en) * | 2016-06-30 | 2017-12-22 | 国营第六一六厂 | Bushing press-mounting method based on high intensity spinning bushing precision press-loading apparatus |
| CN106736409B (en) * | 2017-03-12 | 2018-11-20 | 东阳市东狮卫浴有限公司 | A kind of pressing processing unit (plant) |
| CN108000110A (en) * | 2017-12-29 | 2018-05-08 | 重庆天运汽车配件有限公司 | The copper sheathing pressure-mounting device of connecting rod small end of engine |
| CN111421304B (en) * | 2020-04-08 | 2021-08-31 | 湖北中油科昊机械制造有限公司 | High-pressure plunger pump connecting rod processing technology device |
| CN114473952B (en) * | 2022-02-07 | 2022-12-30 | 常州市新创智能科技有限公司 | Steel bushing installation tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4809420A (en) * | 1987-12-16 | 1989-03-07 | Fatigue Technology, Inc. | Method and apparatus for backing up mandrel exit holes in knuckle structures |
| CN102198585B (en) * | 2010-03-25 | 2013-04-03 | 广西玉柴机器股份有限公司 | Assembly device and method for diesel engine piston pin |
| CN201848793U (en) * | 2010-10-14 | 2011-06-01 | 云南西仪工业股份有限公司 | Clamp for assembling connecting rod bush |
| CN201931260U (en) * | 2010-12-15 | 2011-08-17 | 南车戚墅堰机车车辆工艺研究所有限公司 | Boom crimping device |
| CN202200004U (en) * | 2011-08-05 | 2012-04-25 | 云南西仪工业股份有限公司 | Press-in tool for connecting rod bushings of engines |
| CN202283705U (en) * | 2011-09-30 | 2012-06-27 | 东莞市力宇燃气动力有限公司 | Assembling and disassembling tool of connecting rod bushing |
| CN202655871U (en) * | 2012-07-02 | 2013-01-09 | 河北华北柴油机有限责任公司 | Press fitting tool for connecting rod small end copper sleeve of engine |
-
2012
- 2012-07-02 CN CN201210224364.9A patent/CN102699667B/en active Active
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| CN102699667A (en) | 2012-10-03 |
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