CN102350627B - Special machine tool for press mounting of camshaft bush of diesel engine - Google Patents
Special machine tool for press mounting of camshaft bush of diesel engine Download PDFInfo
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- CN102350627B CN102350627B CN201110293131XA CN201110293131A CN102350627B CN 102350627 B CN102350627 B CN 102350627B CN 201110293131X A CN201110293131X A CN 201110293131XA CN 201110293131 A CN201110293131 A CN 201110293131A CN 102350627 B CN102350627 B CN 102350627B
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- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
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Abstract
The invention provides a special machine tool for press mounting of a camshaft bush of a diesel engine, which can be used for solving the problems of high labor intensity of workers low production efficiency in the traditional press mounting process of a camshaft bush which is realized through manually knocking a mandril with an iron hammer, and has the beneficial effects of effectively reducing the damage to the camshaft bush and tool loss during press mounting process, lowering the machining cost, and improving the press mounting precision of the camshaft bush. The special machine tool is characterized by comprising a front engine base, a rear engine base, a hydraulic cylinder, an operation box and a PLC (Programmable Logic Controller) system, wherein the operation box and the hydraulic cylinder are both connected with an electric cabinet by the PLC electronic control system, the front engine base and the rear engine base are connected by a bolt, a tailstock is arranged on the front end part of the front engine base by a bolt, a limiting stopper and a positioning plate are further arranged on the front engine base, the hydraulic cylinder is fixed on the rear engine base respectively by a front footstand and a rear footstand of the hydraulic cylinder, a piston rod head of the hydraulic cylinder is in threaded connection with a pressure head, a guide bush is sheathed at the front end of the pressure head in an loose manner, and the operation box is arranged on the rear engine base by a vertical post.
Description
Technical field
The present invention relates to the technical field of processing equipment of diesel engine, be specially a kind of special purpose machine tool for press mounting of camshaft bush of diesel engine.
Background technology
in the production process of multi-cylinder diesel engine body, it is the camshaft lining that one procedure is arranged, the camshaft sliding bearing (being commonly called as cam shaft bush) that is about to powdered metallurgical material presses fit into the assigned position place of diesel-engine body camshaft bottom outlet, mostly the camshaft lining was that plug assembled by manually with iron hammer, knocking in the past, exist labor strength large, the problem that production efficiency is low, and lining is prone to lining cracking and the impaired problem of press mounting tool in manually press-fiting process, processing cost is high, thereby, it can not meet the production requirement of multi-cylinder diesel engine in enormous quantities, in addition, artificial its installation accuracy of camshaft lining is poor.
Summary of the invention
For the problems referred to above, the invention provides a kind of special purpose machine tool for press mounting of camshaft bush of diesel engine, it can solve and existing manually with iron hammer, knock plug and carry out cam shaft bush and press-fit the problem that the labor strength that exists in process is large, production efficiency is low, and can effectively reduce and press-fit in process the damage of cam shaft bush and the loss of frock, cut down finished cost, improve cam shaft bush and press-fit precision.
its technical scheme is such, it is characterized in that: it comprises front support, rear support, hydraulic cylinder, control box and PLC control system, the described box of controlling, described hydraulic cylinder all is connected by the PLC electric-control system with electric cabinet, described front support and rear support are bolted, the leading section of described front support is equipped with tailstock by bolt, spacing leaning on and location-plate also is installed on described front support, described hydraulic cylinder is individually fixed in described rear support by its front runners and rear runners, the piston rod head of the described hydraulic cylinder pressure head that has been threaded, described pressure head front end empty set is equipped with fairlead, the described box of controlling is installed on described rear support by column.
It is further characterized in that: described hydraulic cylinder is the hydraulic cylinder with inbuilt displacement sensor; Described inbuilt displacement sensor is magnetostrictive displacement sensor; Described displacement transducer and PLC control system electricly connect; Described front runners and rear runners all are fixed in described rear support by vertical bolt, and described vertical bolt coordinates with its installing hole gap; Rear side end at described front runners is equipped with bearing, laterally holds out against by holding out against screw between described bearing and described front runners; Described fairlead front end is provided with oblique chamfering, is matched in clearance between described fairlead and described diesel engine block camshaft bore, and its fit clearance is 0.1mm～0.22mm; Described oblique chamfering is consistent with the angle of described camshaft bush of diesel engine leading section chamfering; Treat that the camshaft lining coordinates with described pressure head gap, its fit clearance is 0.1mm～0.22mm.
adopt special purpose machine tool of the present invention to carry out the operation that press-fits of camshaft bush of diesel engine, its beneficial effect is: it is by the tailstock on front support, spacing leaning on and the location-plate positioning workpieces, treat that the camshaft lining is fixed in the hydraulic cylinder piston rod front end by pressure head, control moving horizontally of hydraulic cylinder piston rod by the PLC control system, cam shaft bush is pressed fit into the installed position of diesel-engine body camshaft bottom outlet, it does not need the workman to knock plug with iron hammer to carry out craft and press-fit, therefore greatly reduce labor strength, enhance productivity, also can effectively reduce the phenomenon that cam shaft bush ftractures and press mounting tool damages that accidentally causes due to artificial installation, cut down finished cost, can meet the production requirement of multi-cylinder diesel engine in enormous quantities, wherein the stroke of hydraulic cylinder piston rod is by the PLC programme-control, thereby its cam shaft bush press-fits the position accurate positioning, the present invention has simultaneously adopted the hydraulic cylinder with inbuilt displacement sensor, particularly adopt magnetostrictive displacement sensor, it can guarantee the PLC control system to the high speed of hydraulic cylinder, accurate control automatically, thereby guarantees that cam shaft bush press-fits the registration of position, and the bearing of installing on runners before hydraulic cylinder is fixed in vertical bolt and its bolt mounting holes matched in clearance on rear support and leaves larger gap and hydraulic cylinder, regulate the perpendicularity of hydraulic cylinder piston rod with respect to tailstock locating surface on front support by the horizontal direction housing screw of adjusting between front runners and bearing, to guarantee the accurate location of diesel-engine body, and the oblique chamfering of fairlead front end and the matched in clearance between fairlead and camshaft hole, make fairlead can correct the diesel engine body position in the process of with piston rod, advancing, further guarantee the accurate location of diesel-engine body, thereby guaranteed accurately press-fiting of cam shaft bush.
Description of drawings
Fig. 1 is the special purpose machine tool knot schematic diagram that the present invention is used for press mounting of camshaft bush of diesel engine;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is that the A-A of Fig. 1 is to structural representation;
Fig. 4 is guide sleeve structure schematic diagram in the present invention;
Fig. 5 is for adopting lathe of the present invention to carry out to the X6135 diesel engine action schematic diagram that 7 grades of cam shaft bushes press-fit.
The specific embodiment
see Fig. 1, Fig. 2, Fig. 3, the present invention is used for the special purpose machine tool of press mounting of camshaft bush of diesel engine, it comprises front support 3, rear support 10, hydraulic cylinder 9 with control box 16, controlling box 16 electricly connects by PLC with hydraulic cylinder 9, front support 3 is connected by bolt 8 with rear support 10, the leading section of front support 3 is equipped with tailstock 1 by bolt 2, go back mounting limit on front support 3 by 4 and location-plate 5, hydraulic cylinder 9 is installed on rear support 10 by front runners 17 and rear runners 18, piston rod 19 head threads of hydraulic cylinder 9 are equipped with pressure head 7, pressure head 7 front ends are set with fairlead 6, controlling box 16 is installed on rear support 10 by column 13.Hydraulic cylinder 9 is the hydraulic cylinder with inbuilt displacement sensor 11; Displacement transducer 11 is magnetostrictive displacement sensor; On rear support 10, the rear side end of front runners 17 is equipped with bearing 15, hold out against by holding out against screw 14 between bearing 15 and front runners 17; Fairlead 6 front ends are provided with oblique chamfering 21, see Fig. 4, are matched in clearance between fairlead 6 and diesel engine block camshaft bore; Oblique chamfering 21 is consistent with the angle of camshaft bush of diesel engine leading section chamfering, and general angle is 30 °, and the chamfering of cam shaft bush front end can play guiding function when press-fiting, guarantee accurately press-fiting of lining; Treat that the camshaft lining coordinates with the pressure head gap, its fit clearance is 0.1mm～0.22mm.In Fig. 1,22 for to be installed on the portable lamp of controlling on box 16, and it helps operating personnel to observe the process that press-fits of lining.
specifically describe as an example of the X6135 diesel engine example and adopt special purpose machine tool of the present invention to carry out the course of work of press mounting of camshaft bush of diesel engine below in conjunction with accompanying drawing, this diesel engine body is upright 6 cylinders, need to press 7 grades of cam shaft bushes: see Fig. 1, Fig. 2, Fig. 3, diesel-engine body 20 bottom surfaces hang on the location-plate 5 of mmi machine seat 3 up, due to the diesel-engine body bottom surface up the time, there is the operating space that can arrive every grade of camshaft hole its bottom surface, be convenient to manually lay the operating space of lining on the pressure head that stretches into, make simultaneously the lug face of the gear face of body 20 and fuel oil pump side be attached to tailstock 1 and spacing leaning on 4 locating surface, complete the first location of body 20, owing to being matched in clearance between vertical screw 12 and this screw mounting hole on the front runners 17 of fixer cylinder pressure 9 and leaving larger gap, therefore, hold out against screw 14 by adjusting and make hydraulic cylinder make fine position longitudinally in the interstice coverage of vertical screw 12, thereby reach the horizontal direction housing screw of adjusting between front runners and bearing, regulate the purpose of hydraulic cylinder piston rod with respect to the perpendicularity of tailstock locating surface on front support, see Fig. 5, in Fig. 5,23 is the diesel engine block camshaft bore position, 24 is the work initial position that is installed on the pressure head 6 of piston rod 19 leading sections, press the forwarding button of controlling on the case panel, the PLC control system is controlled hydraulic cylinder 9 actions, hydraulic cylinder piston rod 19 stretches into left lateral 1020mm with the fairlead 6 on dynamic head 7 from the camshaft hole of the flywheel end (being rear end) of diesel-engine body, be matched in clearance because fairlead 6 front ends are provided with oblique chamfering 21 and fairlead 6 and camshaft hole, therefore fairlead 6 can play the effect of further correction diesel engine body position in the process that piston rod 19 is advanced, thereby realize the accurate location of diesel-engine body, then manually change fairlead 6 into cam shaft bush, press the button that press-fits of controlling on box 16 panels, piston rod 19 120mm that moves ahead completes and press-fits rear automatic backing 290mm, next action is awaited orders, put after next lining to press again and press-fit button, piston rod 19 120mm that continues to move ahead completes after press-fiting of next grade lining automatic backing 290mm again, so circulation, retract fully until press-fited all lining back piston bars 19, finish the operation that press-fits of lining.Adopt lathe of the present invention to press-fit operation to the diesel-engine body cam shaft bush, the positional precision of its action can reach ± 0.2mm, meet technique desired ± margin of tolerance of 0.5mm.In specific operation process, in order to guarantee operator's safety, any forward motion of piston rod 19 all must be pressed simultaneously forwarding button and realizes controlling on the guidance panel of case by operator's both hands, and the backward movement of piston rod is automatically to be realized by predefined PLC program after forward motion is completed.
Claims (3)
1. special purpose machine tool that is used for press mounting of camshaft bush of diesel engine, it is characterized in that: it comprises front support, rear support, hydraulic cylinder, control box and PLC control system, the described box of controlling, described hydraulic cylinder all is connected by the PLC electric-control system with electric cabinet, described front support and rear support are bolted, the leading section of described front support is equipped with tailstock by bolt, spacing leaning on and location-plate also is installed on described front support, described hydraulic cylinder is individually fixed in described rear support by its front runners and rear runners, the piston rod head of the described hydraulic cylinder pressure head that has been threaded, described pressure head front end empty set is equipped with fairlead, the described box of controlling is installed on described rear support by column, described hydraulic cylinder is the hydraulic cylinder with inbuilt displacement sensor, described inbuilt displacement sensor is magnetostrictive displacement sensor, described displacement transducer and PLC control system electricly connect, described front runners and rear runners all are fixed in described rear support by vertical bolt, described vertical bolt coordinates with its installing hole gap, rear side end at described front runners is equipped with bearing, laterally hold out against by holding out against screw between described bearing and described front runners, described fairlead front end is provided with oblique chamfering, be matched in clearance between described fairlead and described diesel engine block camshaft bore, its fit clearance is 0.1mm～0.22mm.
2. a kind of special purpose machine tool for press mounting of camshaft bush of diesel engine according to claim 1, it is characterized in that: described oblique chamfering is consistent with the angle of described camshaft bush of diesel engine leading section chamfering.
3. a kind of special purpose machine tool for press mounting of camshaft bush of diesel engine according to claim 1, it is characterized in that: treat that the camshaft lining coordinates with described pressure head gap, its fit clearance is 0.1mm～0.22mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110293131XA CN102350627B (en) | 2011-10-07 | 2011-10-07 | Special machine tool for press mounting of camshaft bush of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110293131XA CN102350627B (en) | 2011-10-07 | 2011-10-07 | Special machine tool for press mounting of camshaft bush of diesel engine |
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| Publication Number | Publication Date |
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| CN102350627A CN102350627A (en) | 2012-02-15 |
| CN102350627B true CN102350627B (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110293131XA Active CN102350627B (en) | 2011-10-07 | 2011-10-07 | Special machine tool for press mounting of camshaft bush of diesel engine |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962670B (en) * | 2012-12-06 | 2014-12-10 | 潍柴动力股份有限公司 | Drawing mechanism for camshaft sleeve |
| CN104339144B (en) * | 2013-08-05 | 2017-04-19 | 上海日野发动机有限公司 | Assembly system and assembly method for press-mounted bushing |
| CN105479142B (en) * | 2016-01-28 | 2017-09-26 | 浙江东新动力有限公司 | For cam shaft for diesel engine from dynamic pressure bushing machine |
| CN108213915A (en) * | 2016-12-14 | 2018-06-29 | 上海国上机电科技有限公司 | A kind of positioning device of digital control processing rope drum gland flange |
| CN109719486B (en) * | 2018-12-29 | 2020-05-12 | 重庆百吉四兴压铸有限公司 | Pressure device for assembling bushing and box cover |
| CN112917129B (en) * | 2021-01-27 | 2022-06-10 | 重庆中安颖立智能科技有限公司 | Use method of machine body camshaft lining press-fitting machine structure |
| CN116945103B (en) * | 2023-09-20 | 2023-11-21 | 常州金土木工程仪器有限公司 | Press-fit tool for sensor inner core bushing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948537Y (en) * | 2006-09-07 | 2007-09-19 | 赵忠元 | Railway vehicle knuckle sheath removing-mounting device |
| CN200974224Y (en) * | 2006-10-31 | 2007-11-14 | 扬动股份有限公司 | Camshaft bush press-fitting tool |
| CN101700618A (en) * | 2009-10-22 | 2010-05-05 | 天津银河阀门有限公司 | Hydraulic pressure butterfly valve shaft sleeve installation machine and installation method |
| CN201493656U (en) * | 2009-09-11 | 2010-06-02 | 大连智云自动化装备股份有限公司 | Press mounting device for bushing |
| CN201587285U (en) * | 2010-01-13 | 2010-09-22 | 鄂州市合强机械发展有限公司 | Press mounting withdrawal machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631551A (en) * | 1992-07-13 | 1994-02-08 | Mitsubishi Motors Corp | Device mounting position inspection device |
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- 2011-10-07 CN CN201110293131XA patent/CN102350627B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948537Y (en) * | 2006-09-07 | 2007-09-19 | 赵忠元 | Railway vehicle knuckle sheath removing-mounting device |
| CN200974224Y (en) * | 2006-10-31 | 2007-11-14 | 扬动股份有限公司 | Camshaft bush press-fitting tool |
| CN201493656U (en) * | 2009-09-11 | 2010-06-02 | 大连智云自动化装备股份有限公司 | Press mounting device for bushing |
| CN101700618A (en) * | 2009-10-22 | 2010-05-05 | 天津银河阀门有限公司 | Hydraulic pressure butterfly valve shaft sleeve installation machine and installation method |
| CN201587285U (en) * | 2010-01-13 | 2010-09-22 | 鄂州市合强机械发展有限公司 | Press mounting withdrawal machine |
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| CN102350627A (en) | 2012-02-15 |
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