CN102873658A - Crankshaft assembly press-fitting and positioning device - Google Patents
Crankshaft assembly press-fitting and positioning device Download PDFInfo
- Publication number
- CN102873658A CN102873658A CN2012104108798A CN201210410879A CN102873658A CN 102873658 A CN102873658 A CN 102873658A CN 2012104108798 A CN2012104108798 A CN 2012104108798A CN 201210410879 A CN201210410879 A CN 201210410879A CN 102873658 A CN102873658 A CN 102873658A
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- base plate
- adjustable support
- support plate
- splicing sleeve
- connecting rod
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Abstract
The invention discloses a crankshaft assembly press-fitting and positioning device. A soleplate (2) is arranged on a working table (1); an adjustable support plate (4) is arranged above the soleplate (2); the adjustable support plate (4) is supported by a plurality of springs (5) jointly; the adjustable support plate (4) is sleeved at the middle part of a supporting sleeve (6); the lower end of the supporting sleeve (6) extends into a central through hole on the soleplate (2) and is fixed therein; a connecting rod( 7) is threaded in a via hole on the working table (1); the upper end of the connecting rod (7) extends into the supporting sleeve (6); and a nut (8) is arranged at the middle part of the connecting rod (7) through screw-thread fit. The crankshaft assembly press-fitting and positioning device is ingenious in design, simple in structure and easy to assemble, and is capable of effectively and reliably positioning a crankshaft assembly and a crankcase to ensure even stress on a bearing in the press-fitting process. The crankshaft assembly press-fitting and positioning device avoids the deformation of the bearing or the loosening between an inner ring and an outer ring of the bearing, and therefore ensures the service performance and the service life of the bearing.
Description
Technical field
The invention belongs to technical field of tooling clamps, specifically, the positioner that particularly makes up for the press-fitting crank case bent axle.
Background technology
At present, the mode that engine production producer press-fits the bent axle combination is generally: first crankcase is placed on the work top, the mould assembling of crankcase is faced up, then with in bent axle combination (Qu Chengyi is assemblied in the bent axle combination) crankcase of packing into, make an end of bent axle combination pass the interior dress dead eye place of crankcase, then knock a bent axle combination end up with instrument, bent axle combination and bearing press mounting are put in place.Owing in the process that press-fits, only crankcase is located, and bearing is not located, when knocking the bent axle combination, shaft strength is uneven, and bearing inner race can be dragged by the bent axle combination, cause bearing to deform or bearing enclose between loosening, thus because occur in the assembling process serviceability and the service life that tolerance variation can affect bearing greatly.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of location reliable bent axle assembling and pressing positioner.
Technical scheme of the present invention is as follows: a kind of bent axle assembling and pressing positioner, comprise work top (1), be provided with base plate (2) at described work top (1), be fixed with a plurality of alignment pins (3) that distribute by even circumferential on this base plate (2), the plate face of the axial line of alignment pin (3) and base plate (2) is perpendicular, be provided with adjustable support plate (4) in the top of described base plate (2), this adjustable support plate (4) supports by a plurality of springs (5) are common, described spring (5) is corresponding one by one with alignment pin (3), the lower end kink of spring (5) is on the alignment pin (3) of correspondence, described adjustable support plate (4) is set in the middle part of splicing sleeve (6), adjustable support plate (4) and splicing sleeve (6) matched in clearance, the lower end of splicing sleeve (6) is stretched into and is fixed in the central through hole of base plate (2), in the center via hole of described work top (1), be equipped with connecting rod (7), the upper end of this connecting rod (7) is stretched in the splicing sleeve (6), and the middle part of connecting rod (7) is provided with nut (8) by threaded engagement.
When the present invention is used for press-fiting the bent axle combination, the crankcase that will press-fit first bearing is placed on the adjustable support plate, the mould assembling of crankcase is faced up, crankcase is supported by adjustable support plate, and the upper end of splicing sleeve is stretched in the crankcase, and contact (main locating surface) with the bottom surface of bearing inner race, then bent axle is made up in the crankcase of packing into, the end of thread that bent axle is made up passes the inner ring of bearing, and extend in the splicing sleeve, then the upper end of connecting rod is inserted in the end of thread of bent axle combination, screws again nut, at last connecting rod is blocked, guarantee that connecting rod does not rotate, this moment, rotating nut moved down the combination of connecting rod and bent axle, and the bent axle assembling and pressing is put in place.
Because in the process that press-fits, the upper surface of splicing sleeve is main locating surface, inner ring to bearing positions, the upper face of adjustable support plate is the auxiliary positioning face, crankcase is positioned, reliable to bent axle combination and crankcase location like this, shaft strength is even when can guarantee to press-fit, and bearing inner race is not dragged by the bent axle combination can, effectively avoided thus bearing to deform or bearing enclose between occur loosening, prevented that the assembling process middle (center) bearing from deforming, thereby guaranteed serviceability and the service life of bearing.Adjustable support plate is supported jointly by the spring that a plurality of even circumferentials distribute, and can guarantee the stationarity of crankcase in press-fiting process, the quality that press-fits with further raising.
Described base plate (2) is the rectangular flat structure, this base plate (2) is connected with work top (1) by two symmetrically arranged stop pins (9), the lower end of described stop pin (9) is fixed in the work top (1), and the upper end of stop pin (9) is stretched in the base plate (2).Above structure base slab moulding is simple, and processing and fabricating is easy, and cost is low; Base plate is located by two stop pins, can not be moved or rotate in horizontal plane, the further like this reliability that has improved bent axle combination and crankcase location.
Be provided with three alignment pins (3) that distribute by even circumferential on the described base plate (2), the center of circle of alignment pin (3) circumference that surrounds is on the axial line of splicing sleeve (6), and the lower end of described alignment pin (3) is stretched into and is fixed in the base plate (2).Above structure can be guaranteed the fixing that is connected between alignment pin and the base plate, adopt three alignment pins respectively to three spring location, spring is only moved at above-below direction, and can avoid spring to occur crooked or come off, three springs that distribute by even circumferential support adjustable support plate jointly, can guarantee stationarity and the reliability of adjustable support plate.
The pilot hole at described adjustable support plate (4) center is up big and down small syllogic stepped hole, outer wall in described splicing sleeve (6) middle and upper part is formed with annular boss (6a), and this annular boss (6a) adapts with the stage casing of adjustable support plate (4) center pilot hole.Above structure adjustable support plate is simple in structure, and processing and fabricating is easy, and cost is low; The hypomere of adjustable support plate center pilot hole and the little matched in clearance of splicing sleeve, can guarantee that adjustable support plate only moves at above-below direction, the stage casing of adjustable support plate center pilot hole cooperates with the annular boss on the splicing sleeve, play that above-below direction is stepped down and circumferential location, the epimere of adjustable support plate center pilot hole cooperates with the centring ring on the crankcase, play also that above-below direction is stepped down and circumferential location, thereby further guaranteed the reliability of location.
Beneficial effect: the present invention designs ingenious, simple in structure, assembling easily, can to bent axle combination and crankcase carries out effectively, locate reliably, shaft strength is even when guaranteeing to press-fit, avoided bearing to deform or bearing enclose between occur loosening, thereby guaranteed serviceability and the service life of bearing.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is use state diagram of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1 and Figure 2, the present invention is made of work top 1, base plate 2, alignment pin 3, adjustable support plate 4, spring 5, splicing sleeve 6, connecting rod 7, nut 8 and stop pin 9 etc.Wherein, work top 1 is slab construction, have circular via hole at work top 1, the bilateral symmetry of this via hole is provided with stop pin 9, described stop pin 9 is perpendicular with work top 1, the lower end of stop pin 9 is stretched in the work top 1, and the lower surface of stop pin 9 is a little more than the bottom surface of work top 1, and stop pin 9 is fixedly connected with work top 1.
As shown in Figure 1 and Figure 2, be provided with base plate 2 at work top 1, this base plate 2 is the rectangular flat structure, and the end face of the bottom surface of base plate 2 and work top 1 fits.The upper end of described stop pin 9 is stretched on the base plate 2 in the corresponding locating hole that arranges, and is moved in horizontal plane or rotates to prevent base plate 2.Certainly, as the replacement that is equal to, base plate 2 also can be circular or other shape that is fit to.Center at described base plate 2 has through hole, and be provided with a plurality of alignment pins 3 at base plate 2, and the plate face of the axial line of alignment pin 3 and base plate 2 is perpendicular, and the number of alignment pin 3 is determined according to actual needs, can be two, three, four or more, present embodiment be preferably three.Described alignment pin 3 is pressed even circumferential and is distributed, and the center of circle of alignment pin 3 circumference that surrounds is on the center line of base plate 2 central through holes.The lower end of described alignment pin 3 is stretched in the base plate 2, and the lower surface of alignment pin 3 is a little more than the bottom surface of base plate 2, and alignment pin 3 is fixedly connected with base plate 2, and the upper end of alignment pin 3 upwards exceeds the end face of base plate 2.
As shown in Figure 1 and Figure 2, be provided with adjustable support plate 4 above base plate 2, this adjustable support plate 4 is between two stop pins 9.Adjustable support plate 4 is circular flat plate structure, also can be other shape that is fit to.Adjustable support plate 4 is supported jointly by a plurality of springs 5, and described spring 5 is corresponding one by one with alignment pin 3.In the present embodiment, the number of spring 5 is three, and the lower end kink of spring 5 is on the alignment pin 3 of correspondence, and the end face butt of the lower surface of spring 5 and base plate 2, the bottom surface butt of the upper surface of spring 5 and adjustable support plate 4.Center in described adjustable support plate 4 offers pilot hole, this pilot hole is up big and down small syllogic stepped hole, adjustable support plate 4 is set in middle part, the hypomere of adjustable support plate 4 center pilot holes and splicing sleeve 6 matched in clearance of splicing sleeve 6 by the pilot hole at its center.Outer wall in described splicing sleeve 6 middle and upper parts is formed with annular boss 6a, and the stage casing of this annular boss 6a and adjustable support plate 4 center pilot holes adapts, and the stage casing of adjustable support plate 4 center pilot holes plays that above-below direction is stepped down and circumferential location.The lower end of described splicing sleeve 6 is stretched in the central through hole of base plate 2, and the lower surface of splicing sleeve 6 is a little more than the bottom surface of base plate 2, and splicing sleeve 6 fixes by interference fit and base plate 2.In the via hole of described work top 1, be equipped with connecting rod 7, the upper end of this connecting rod 7 is stretched in the splicing sleeve 6, its axial line of the upper end edge of connecting rod 7 is provided with screw, the hypomere of described connecting rod 7 is provided with flat square structure, the middle part of connecting rod 7 is provided with nut 8 by threaded engagement, nut 8 is positioned at the below of work top 1, and near the bottom surface of work top 1.
Operation principle of the present invention is as follows:
Before the use, connecting rod 7 and nut 8 are not connected on the positioner.When being used for press-fiting the bent axle combination, the crankcase 11 that will press-fit first bearing 10 is placed on the adjustable support plate 4, the mould assembling of crankcase 11 is faced up, crankcase 11 is supported by adjustable support plate 4, the centring ring 11a that carries on the crankcase 11 stretches into the epimere of adjustable support plate 4 center pilot holes, the epimere of adjustable support plate 4 center pilot holes plays that above-below direction is stepped down and circumferential location, and the upper end of splicing sleeve 6 is stretched in the crankcase 11, and contact with the bottom surface of bearing 10 inner rings, then bent axle combination 12 is packed in the crankcase 11, make the end of thread of bent axle combination 12 pass the inner ring of bearing 10, and extend in the splicing sleeve 6, then the upper end of connecting rod 7 is passed the via hole of work top 1 and stretched in the splicing sleeve 6, make the upper end of connecting rod 7 be inserted in the end of thread of bent axle combination 12, screw again nut 8, at last connecting rod 6 flat horizontals are blocked, guarantee that connecting rod 6 does not rotate, this moment is rotating nut 8 again, because nut 8 can not move upward again, under the effect of nut 8, connecting rod 6 and bent axle combination 12 move down, and bent axle combination 12 and bearing 10 are press-fit into place.
Claims (4)
1. bent axle assembling and pressing positioner, comprise work top (1), it is characterized in that: be provided with base plate (2) at described work top (1), be fixed with a plurality of alignment pins (3) that distribute by even circumferential on this base plate (2), the plate face of the axial line of alignment pin (3) and base plate (2) is perpendicular, be provided with adjustable support plate (4) in the top of described base plate (2), this adjustable support plate (4) supports by a plurality of springs (5) are common, described spring (5) is corresponding one by one with alignment pin (3), the lower end kink of spring (5) is on the alignment pin (3) of correspondence, described adjustable support plate (4) is set in the middle part of splicing sleeve (6), adjustable support plate (4) and splicing sleeve (6) matched in clearance, the lower end of splicing sleeve (6) is stretched into and is fixed in the central through hole of base plate (2), be equipped with connecting rod (7) in the via hole on described work top (1), the upper end of this connecting rod (7) is stretched in the splicing sleeve (6), and the middle part of connecting rod (7) is provided with nut (8) by threaded engagement.
2. bent axle assembling and pressing positioner according to claim 1, it is characterized in that: described base plate (2) is the rectangular flat structure, this base plate (2) is connected with work top (1) by two symmetrically arranged stop pins (9), the lower end of described stop pin (9) is fixed in the work top (1), and the upper end of stop pin (9) is stretched in the base plate (2).
3. bent axle assembling and pressing positioner according to claim 2, it is characterized in that: be provided with three alignment pins (3) that distribute by even circumferential on the described base plate (2), the center of circle of alignment pin (3) circumference that surrounds is on the axial line of splicing sleeve (6), and the lower end of described alignment pin (3) is stretched into and is fixed in the base plate (2).
4. according to claim 1 and 2 or 3 described bent axle assembling and pressing positioners, it is characterized in that: the pilot hole at described adjustable support plate (4) center is up big and down small syllogic stepped hole, outer wall in described splicing sleeve (6) middle and upper part is formed with annular boss (6a), and this annular boss (6a) adapts with the stage casing of adjustable support plate (4) center pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410879.8A CN102873658B (en) | 2012-10-24 | 2012-10-24 | Crankshaft assembly press-fitting and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410879.8A CN102873658B (en) | 2012-10-24 | 2012-10-24 | Crankshaft assembly press-fitting and positioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102873658A true CN102873658A (en) | 2013-01-16 |
| CN102873658B CN102873658B (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210410879.8A Expired - Fee Related CN102873658B (en) | 2012-10-24 | 2012-10-24 | Crankshaft assembly press-fitting and positioning device |
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| Country | Link |
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| CN (1) | CN102873658B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962989A (en) * | 2014-05-30 | 2014-08-06 | 浙江博民机电股份有限公司 | Positioning tool of pressing machine |
| CN104589024A (en) * | 2015-01-16 | 2015-05-06 | 无锡市创能机械制造有限公司 | Bearing press mounting tool for plate rammer vibration box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159754A (en) * | 1991-03-20 | 1992-11-03 | The Budd Company | Process for press fitting a vehicle wheel hub into an integral bearing |
| CN201208692Y (en) * | 2008-06-08 | 2009-03-18 | 龙口海盟机械有限公司 | Apparatus for press mounting automobile brake disc bearing shell |
| CN201979266U (en) * | 2011-03-24 | 2011-09-21 | 长城汽车股份有限公司 | Pressing tool for camshaft front oil seal |
| CN202079381U (en) * | 2011-05-20 | 2011-12-21 | 安徽江淮汽车股份有限公司 | Device for press mounting of automobile front-wheel hub-bearing outer ring |
| CN202846478U (en) * | 2012-10-24 | 2013-04-03 | 力帆实业(集团)股份有限公司 | Crankshaft combination press mounting tooling |
-
2012
- 2012-10-24 CN CN201210410879.8A patent/CN102873658B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159754A (en) * | 1991-03-20 | 1992-11-03 | The Budd Company | Process for press fitting a vehicle wheel hub into an integral bearing |
| CN201208692Y (en) * | 2008-06-08 | 2009-03-18 | 龙口海盟机械有限公司 | Apparatus for press mounting automobile brake disc bearing shell |
| CN201979266U (en) * | 2011-03-24 | 2011-09-21 | 长城汽车股份有限公司 | Pressing tool for camshaft front oil seal |
| CN202079381U (en) * | 2011-05-20 | 2011-12-21 | 安徽江淮汽车股份有限公司 | Device for press mounting of automobile front-wheel hub-bearing outer ring |
| CN202846478U (en) * | 2012-10-24 | 2013-04-03 | 力帆实业(集团)股份有限公司 | Crankshaft combination press mounting tooling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962989A (en) * | 2014-05-30 | 2014-08-06 | 浙江博民机电股份有限公司 | Positioning tool of pressing machine |
| CN103962989B (en) * | 2014-05-30 | 2016-02-24 | 浙江博民机电股份有限公司 | The positioning tool of pressing machine |
| CN104589024A (en) * | 2015-01-16 | 2015-05-06 | 无锡市创能机械制造有限公司 | Bearing press mounting tool for plate rammer vibration box |
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| Publication number | Publication date |
|---|---|
| CN102873658B (en) | 2015-05-27 |
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Granted publication date: 20150527 Termination date: 20191024 |