CN101733625B - Device for press-fitting crank case bearing - Google Patents
Device for press-fitting crank case bearing Download PDFInfo
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- CN101733625B CN101733625B CN2009102508277A CN200910250827A CN101733625B CN 101733625 B CN101733625 B CN 101733625B CN 2009102508277 A CN2009102508277 A CN 2009102508277A CN 200910250827 A CN200910250827 A CN 200910250827A CN 101733625 B CN101733625 B CN 101733625B
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- ram shaft
- cope match
- plate pattern
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Abstract
The invention discloses a device for press-fitting crankcase bearing. An upper die plate is arranged above a lower die plate in parallel, the left and right ends of the upper and lower die plates are connected by a guide rod, the upper die plate can move up and down along the guide rod; the center of the upper die plate is opened with a through hole connected with a press machine, the left and right sides of the through hole are respectively provided with a group of pressure head shafts, each group of pressure head shafts are distributed by the position of bearing chamber in the crankcase body, the pressure head shaft is vertical to the upper die plate, the upper end of the pressure head shaft is fixedly connected with the upper die plate, the lower end of the pressure head shaft points at the board of the lower die plate, and the center at the lower end of the pressure head shaft is provided with a round locating boss. The invention can complete the assembly of the whole bearings of two case bodies by once press-fitting, not only operation is simple and labour intensity of workers is reduced, but also assembly efficiency is greatly improved, assembly quality is ensured, and the case body is avoided to be crushed.
Description
Technical field
The invention belongs to technical field of tooling clamps, specifically, the particularly press-fitting tool of crankcase bearing.
Background technology
Be provided with a plurality of bearing chambers in the left and right casing of crankshaft box of motorcycle engine, pressing bearing in the bearing chamber is used for supporting drive shaft.At present, the mode of the left and right casing pressing bearing of crankcase, be to adopt the column frock, provide power to carry out by press, that is: a left side or right case are placed on the work top, make the pressure head of certain interior bearing chamber of casing over against press, then bearing is placed in the lower end of column frock, and with hand steered bearing, fall to prevent bearing, open press then, the pressure head of press is pressed down, press promotes the column frock by pressure head and moves down, and bearing is pressed in the bearing chamber of casing, and the deficiency that above-mentioned press-fit approach exists is:
1, once can only press-fit a bearing, same casing need press-fit the assembling that repeatedly just can finish whole bearings, and efficiency of assembling is low, is unfavorable for producing in batches.
2, in the process that press-fits, need with the hand steered bearing of living, complex operation not only, working strength of workers is big, and easily workman's hand is hindered, and security incident takes place frequently.
3, casing is not located on work top, and the contraposition between casing bearing chamber and the column frock is carried out with workman's sensation and experience, the degree of accuracy is relatively poor, cause easily press-fit not in place, perhaps bearing is pressed crookedly, both influenced operating efficiency, be difficult to guarantee the quality of assembling again, when serious even casing can be weighed wounded, damages by pressure, cause casing to scrap.
4, because the coordinate and the degree of depth of each bearing chamber of casing are distinguishing, and traditional approach can only be pressed into bearing in the specific bearing chamber, whether the coordinate and the degree of depth that can't detect bearing chamber be qualified.
5, owing to be difficult to accurate location between column frock and the bearing chamber, the bad control in the fit-up gap of bearing like this, the assembly cleanliness of bearing is relatively poor, can influence the engine machine performance, the service life of shortening bearing and engine.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of device of press-fitting crank case bearing, with the efficiency of assembling of effective raising bearing.
Technical scheme of the present invention is as follows: a kind of device of press-fitting crank case bearing, comprise cope match-plate pattern, lower bolster, guide post and ram shaft, wherein lower bolster is horizontally disposed flat board, directly over lower bolster, be provided with parallel with it cope match-plate pattern, the left and right two ends of described upper and lower template connect by guide post, and cope match-plate pattern can move up and down along guide post; Central authorities at described cope match-plate pattern have the through hole that is connected with press, the left and right both sides of this through hole respectively is provided with one group of ram shaft, every group of ram shaft pressed the position distribution of crankcase body inner bearing chamber, described ram shaft and cope match-plate pattern are perpendicular, fixedly connected with cope match-plate pattern in the upper end of ram shaft, the lower end of ram shaft is unsettled, point to the plate face of lower bolster, and the central authorities in the ram shaft lower end is provided with circular positioning boss.
Adopt above technical scheme, cope match-plate pattern is connected with the pressure head of press by its central through hole, every group of ram shaft is identical with bearing chamber number in treating a press-fitting crank case left side or right case on the cope match-plate pattern, the position is relative, and every ram shaft is basic equal with distance between the corresponding bearing chamber.When being used to press-fit, two casings with crankcase are placed on the lower bolster earlier, make the corresponding one group of ram shaft of one of them casing, corresponding another group ram shaft of another casing, then the bearing holder (housing, cover) of each model is loaded on the positioning boss of corresponding ram shaft lower end, opens press then, the pressure head that makes press is toward pressing down, the bearing that the pressure head of press drives on cope match-plate pattern, ram shaft and the ram shaft moves downward along guide post, bearing is pressed in the bearing chamber corresponding in the casing up to each ram shaft.Move on the pressure head of press, drive cope match-plate pattern and ram shaft and upwards reset along guide post, the casing that will press-fit bearing takes off from lower bolster, changes another and treats the casing that press-fits, and can carry out next and press-fit working cycles.
Among the present invention, the set-up mode of two groups of ram shaft can be that one group of bearing chamber with the crankcase left box body is corresponding, and another group is corresponding with the bearing chamber of crankcase right case; Perhaps all the bearing chamber with the crankcase left box body is corresponding for two groups of ram shaft; Perhaps all the bearing chamber with the crankcase right case is corresponding for two groups of ram shaft.Press-fit the assembling that once can finish two whole bearings of casing by the present invention, not only simple to operate, and improved efficiency of assembling greatly.Distance between the number of ram shaft, position and ram shaft and the lower bolster all designs according to the casing standard component, when press-fiting like this, whether the coordinate and the degree of depth that can detection case body bearing chamber be qualified, satisfied the requirement that uniformity is produced, and can control the fit-up gap of bearing better, to improve the engine machine performance.
On the lower bolster below described every group of ram shaft, have locating hole, be equipped with alignment pin in this locating hole from top to bottom, and the pin head of alignment pin exposes the plate face of lower bolster.The number of alignment pin and position are corresponding with the dowel hole on the casing, take out alignment pin before press-fiting earlier, after treating that casing is placed on the lower bolster, alignment pin is passed dowel hole on the casing, insert in the locating hole of lower bolster, alignment pin effectively is positioned at casing on the lower bolster, to prevent that casing from moving in horizontal plane, contraposition is accurate between casing and the ram shaft like this, has further improved to press-fit efficient, guarantee the quality of assembling, avoided casing to be weighed wounded or damage by pressure.
The lower end and the lower bolster of described guide post fix, the copper sheathing matched in clearance that is embedded in the upper end of guide post and the cope match-plate pattern.More than simple and reliable for structure, easy for installation, copper sheathing contacts with guide post, wearability is good, can effectively prevent wearing and tearing, has ensured that cope match-plate pattern moves down all the time in vertical direction.
Upper and lower at described copper sheathing respectively is provided with an end cap, and this end cap fixes by screw and cope match-plate pattern, is embedded with oil sealing in end cap, and the end face of the end face of described oil sealing and copper sheathing corresponding end fits.Be added with lubricating oil between copper sheathing and guide post, to reduce friction, ensure the smoothness of copper sheathing and guide post relative motion, end cap and oil sealing can guarantee that lubricating oil does not leak.
In order to make ram shaft that firm, easy accessibility is installed, the upper end of described ram shaft is passed cope match-plate pattern from the bottom up, by nut check.
Along continuous straight runs has positioning through hole on the positioning boss of described ram shaft lower end, this positioning through hole is by the center of positioning boss, and steel ball, spring are installed in the positioning through hole and press closer screw, one end of described spring and steel ball butt, steel ball is spacing by the reducing in positioning through hole aperture, the other end of spring with press closer the screw butt, this presses closer screw and positioning through hole threaded engagement.
Above structure is under the effect of spring, the fraction spheroid of steel ball exposes the reducing of positioning through hole, when bearing holder (housing, cover) is loaded on positioning boss, the inner ring compressing steel ball of bearing bounces back in positioning through hole, spring is further compressed, after bearing holder (housing, cover) installs, under the effect of recoil of spring power, steel ball holds out against the inwall at bearing inner race, and unclamp the hand bearing also can not fall from ram shaft this moment, like this needn't be with hand steered bearing when press-fiting, both simplified operation, alleviate working strength of workers, prevented the industrial accident generation again, more safe and reliable.Simultaneously, improve the assembly cleanliness of bearing, can prolong the service life of bearing and engine.Press closer the position of screw by adjustment at positioning through hole, the elastic force that can also regulating spring steel ball be applied, too tight or too loose on positioning boss to avoid bearing holder (housing, cover).
For guarantee to bearing enough big pressure is arranged and help bearing fast cover install on the positioning boss, the diameter of described positioning through hole aperture place's reducing is less than the diameter of steel ball, but greater than the radius of steel ball.
The invention has the beneficial effects as follows:
1, press-fit the assembling that once can finish two whole bearings of casing, not only simple to operate, and improved efficiency of assembling greatly, help producing in batches.
2, in the process that press-fits, bearing is located, reduced working strength of workers, avoided workman's hand to be weighed wounded by spring and steel ball.
3, can effectively locate casing by alignment pin, prevent that casing from moving in horizontal plane, contraposition is accurate between casing and the ram shaft, bearing can not occur presses not in place or presses situations such as crooked, further improved and press-fited efficient, guaranteed the quality of assembling, avoided casing to be weighed wounded or damage by pressure.
Whether qualified, satisfied the requirement that uniformity is produced if 4, can also detect the coordinate and the degree of depth of bearing chamber when press-fiting, prevented that substandard product from flowing into next process.
5, effectively improve the assembly cleanliness of bearing, can control the fit-up gap of bearing better, improved the engine machine performance, prolonged the service life of bearing and engine.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of cope match-plate pattern among the present invention.
Fig. 3 is for steel ball, spring among the present invention and press closer the assembling schematic diagram of screw.
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 by cope match-plate pattern 1, lower bolster 2, guide post 3, ram shaft 4, alignment pin 5, copper sheathing 6, end cap 7, oil sealing 8, nut 9, steel ball 10, spring 11 and press closer parts such as screw 12 and constitute, wherein upper and lower template 1,2 is horizontally disposed rectangular flat, cope match-plate pattern 1 be positioned at lower bolster 2 directly over.Central authorities at described cope match-plate pattern 1 have the through hole 1a that is connected with press, the left and right both sides of this through hole 1a respectively is provided with one group of via hole 1b, every group of corresponding one group of ram shaft 4 of via hole 1b, be that ram shaft 4 is perpendicular with cope match-plate pattern 1, the upper end of ram shaft 4 is passed the via hole 1b of cope match-plate pattern correspondence from the bottom up, by nut 9 lockings.The set-up mode of two groups of ram shaft 4 can be that one group of bearing chamber with the crankcase left box body is corresponding, and another group is corresponding with the bearing chamber of crankcase right case; Perhaps all the bearing chamber with the crankcase left box body is corresponding for two groups of ram shaft 4; Perhaps all the bearing chamber with the crankcase right case is corresponding for two groups of ram shaft 4.In the present embodiment, the ram shaft 4 on the through hole 1a left side has five, and the position of five ram shaft is corresponding one by one with five bearing chambers of crankcase right case; The ram shaft 4 on through hole 1a the right has three, and the position of three ram shaft is corresponding one by one with three bearing chambers of crankcase left box body.
From Fig. 1, Fig. 3 as can be known, the lower end of ram shaft 4 is unsettled, points to the plate face of lower bolster 2, and the central authorities in every ram shaft 4 lower ends are formed with circular positioning boss 4a, the axle body diameter of the diameter specific head axle 4 of this positioning boss 4a is little, and both axis are on same straight line.Described positioning boss 4a goes up along continuous straight runs and has positioning through hole, this positioning through hole is by the center of positioning boss 4a, and steel ball 10, spring 11 are installed in the positioning through hole and press closer screw 12, one end of described spring 11 and steel ball 10 butts, steel ball 10 is spacing by the reducing in positioning through hole aperture, the diameter of positioning through hole aperture place reducing is less than the diameter of steel ball 10, but greater than the radius of steel ball 10, the fraction spheroid of steel ball 10 exposes the reducing of positioning through hole.The other end of described spring 11 with press closer screw 12 butts, this presses closer screw 12 and positioning through hole threaded engagement, press closer screw 12 and do not exceed the periphery of positioning boss 4a, adjust and press closer the position of screw 12 in positioning through hole, can 11 pairs of steel balls 10 of regulating spring apply the size of elastic force.
From Fig. 1, Fig. 2 further as can be known, middle part symmetry at two ends, cope match-plate pattern 1 left and right sides is embedded with copper sheathing 6, the upper and lower of described copper sheathing 6 respectively is provided with an end cap 7, this end cap 7 fixes by screw and cope match-plate pattern 1, in end cap 7, be embedded with oil sealing 8, described oil sealing 8 and end cap 7 interference fit, the end face of the end face of oil sealing 8 and copper sheathing 6 corresponding end fits.Described two copper sheathings 6 corresponding two guide posts 3, copper sheathing 6 cooperates with the upper gap of guide post 3, and this guide post 3 and upper and lower template 1,2 are perpendicular, and the lower end of guide post 3 is by being threaded or welding and lower bolster 2 are fixed.Have two groups of locating hole 2a on described lower bolster 2, every group of corresponding one group of ram shaft 4 of locating hole 2a be equipped with alignment pin 5 from top to bottom among this locating hole 2a, and the pin head of alignment pin 5 exposed the plate face of lower bolster 2.The number of described alignment pin 5 and position are corresponding with the dowel hole on a crankcase left side or the casing.
Operation principle of the present invention is as follows:
Take out alignment pin 5 earlier, with a crankcase left side, right case 13,14 are placed on the lower bolster 2, make one group of ram shaft 4 on the crankcase right case 14 corresponding left sides, one group of ram shaft 4 on crankcase left box body 13 corresponding the right, then alignment pin 5 is passed a left side, right case 13, dowel hole on 14, insert among the locating hole 2a of lower bolster 2 correspondences, alignment pin 5 effectively is positioned at casing on the lower bolster 2, to prevent that casing from moving in horizontal plane, then the bearing 15 of each model is set on the positioning boss 4a of corresponding ram shaft 4 lower ends, in the process of bearing set 15, the inner ring compressing steel ball 10 of bearing 15 bounces back in positioning through hole, spring 11 is further compressed, after bearing 15 covers install, under the effect of spring 11 screen resiliences, steel ball 10 holds out against the inwall at bearing 15 inner rings, to prevent that bearing 15 from falling from ram shaft 4, open press at last, the pressure head that makes press is toward pressing down, the pressure head of press drives cope match-plate pattern 1, bearing 15 on ram shaft 4 and the ram shaft 4 moves downward along guide post 3, bearing 15 is pressed in the bearing chamber corresponding in the casing up to each ram shaft 4.Move on the pressure head of press, drive cope match-plate pattern 1 and ram shaft 4 and upwards reset along guide post 3, the left and right casing that will press-fit bearing takes off from lower bolster 2, changes another and treats the casing that press-fits, and can carry out next and press-fit working cycles.
Claims (7)
1. the device of a press-fitting crank case bearing, it is characterized in that: lower bolster (2) is horizontally disposed flat board, directly over lower bolster (2), be provided with parallel with it cope match-plate pattern (1), the left and right two ends of described upper and lower template (1,2) connect by guide post (3), and cope match-plate pattern (1) can move up and down along guide post (3); Central authorities at described cope match-plate pattern (1) have the through hole (1a) that is connected with press, the left and right both sides of this through hole (1a) respectively is provided with one group of ram shaft (4), every group of ram shaft (4) pressed the position distribution of crankcase body inner bearing chamber, described ram shaft (4) is perpendicular with cope match-plate pattern (1), fixedly connected with cope match-plate pattern (1) in the upper end of ram shaft (4), the lower end of ram shaft (4) is unsettled, points to the plate face of lower bolster (2), and is provided with circular positioning boss (4a) in the central authorities of ram shaft (4) lower end.
2. the device of press-fitting crank case bearing according to claim 1 is characterized in that: have locating hole (2a) on the lower bolster (2) of described every group of ram shaft (4) below, be equipped with alignment pin (5) in this locating hole (2a) from top to bottom.
3. the device of press-fitting crank case bearing according to claim 1 and 2, it is characterized in that: the lower end of described guide post (3) and lower bolster (2) fix, copper sheathing (6) matched in clearance that is embedded in the upper end of guide post (3) and the cope match-plate pattern (1).
4. the device of press-fitting crank case bearing according to claim 3, it is characterized in that: the upper and lower at described copper sheathing (6) respectively is provided with an end cap (7), this end cap (7) fixes by screw and cope match-plate pattern (1), be embedded with oil sealing (8) in end cap (7), the end face of the end face of described oil sealing (8) and copper sheathing (6) corresponding end fits.
5. the device of press-fitting crank case bearing according to claim 1, it is characterized in that: the upper end of described ram shaft (4) is passed cope match-plate pattern (1) from the bottom up, is locked by nut (9).
6. the device of press-fitting crank case bearing according to claim 1, it is characterized in that: go up along continuous straight runs at the circular positioning boss (4a) of described ram shaft (4) lower end and have positioning through hole, this positioning through hole is by the center of circular positioning boss (4a), and steel ball (10) is installed in the positioning through hole, spring (11) and press closer screw (12), one end of described spring (11) and steel ball (10) butt, steel ball (10) is spacing by the reducing in positioning through hole aperture, the other end of spring (11) with press closer screw (12) butt, this presses closer screw (12) and positioning through hole threaded engagement.
7. the device of press-fitting crank case bearing according to claim 6 is characterized in that: the diameter of described positioning through hole aperture place's reducing is less than the diameter of steel ball (10), but greater than the radius of steel ball (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102508277A CN101733625B (en) | 2009-12-28 | 2009-12-28 | Device for press-fitting crank case bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102508277A CN101733625B (en) | 2009-12-28 | 2009-12-28 | Device for press-fitting crank case bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101733625A CN101733625A (en) | 2010-06-16 |
| CN101733625B true CN101733625B (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102508277A Expired - Fee Related CN101733625B (en) | 2009-12-28 | 2009-12-28 | Device for press-fitting crank case bearing |
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| CN (1) | CN101733625B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913073A (en) * | 2010-08-17 | 2010-12-15 | 无锡英特帕普威孚液压有限责任公司 | Sliding bearing rapid mounting device |
| CN102107352B (en) * | 2010-12-08 | 2012-08-22 | 中国科学院自动化研究所 | Bearing-crankshaft intelligent press mounting method and system for scroll air-conditioning compressor |
| CN102114593B (en) * | 2011-03-31 | 2012-11-21 | 中国科学院自动化研究所 | Intelligent pressing device and method of eccentric shaft and bearing |
| CN102366888B (en) * | 2011-10-27 | 2012-12-26 | 常熟纺织机械厂有限公司 | Porous bearing pressing-in device for thin-plate parts |
| CN103659227B (en) * | 2013-10-25 | 2017-01-11 | 宁波吉利罗佑发动机零部件有限公司 | Press fitting device for engine high-voltage wire |
| CN103567743B (en) * | 2013-11-08 | 2016-03-16 | 无锡威孚精密机械制造有限责任公司 | The planet axis press-fitting tool of hub reduction gear |
| CN108500900B (en) * | 2018-03-27 | 2019-10-08 | 林淑录 | A kind of bearing installation equipment |
| CN109483200B (en) * | 2018-12-29 | 2024-06-21 | 浙江联宜电机有限公司 | Oil seal device for pressing end cover |
| CN113263314B (en) * | 2021-05-19 | 2023-07-21 | 中航西安飞机工业集团股份有限公司 | Mounting method of bearing dismounting device for closed box structure |
| CN114589477B (en) * | 2021-12-07 | 2023-02-10 | 杭州速博雷尔传动机械有限公司 | Speed reducer housing bearing press-fitting equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201596885U (en) * | 2009-12-28 | 2010-10-06 | 力帆实业(集团)股份有限公司 | Crankcase bearing press-fit tooling |
-
2009
- 2009-12-28 CN CN2009102508277A patent/CN101733625B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201596885U (en) * | 2009-12-28 | 2010-10-06 | 力帆实业(集团)股份有限公司 | Crankcase bearing press-fit tooling |
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| CN101733625A (en) | 2010-06-16 |
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