CN202292060U - Pressing machine of inner ring of inner bearing for intermediate/rear axle hub - Google Patents
Pressing machine of inner ring of inner bearing for intermediate/rear axle hub Download PDFInfo
- Publication number
- CN202292060U CN202292060U CN2011204198761U CN201120419876U CN202292060U CN 202292060 U CN202292060 U CN 202292060U CN 2011204198761 U CN2011204198761 U CN 2011204198761U CN 201120419876 U CN201120419876 U CN 201120419876U CN 202292060 U CN202292060 U CN 202292060U
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- pressing machine
- inner ring
- oil cylinder
- track
- axle hub
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Abstract
The utility model relates to a pressing machine of an inner ring of an inner bearing for an intermediate/rear axle hub. The pressing machine is used for pressing the inner ring of the inner bearing of the intermediate/rear axle hub. A steel structure I is rigidly connected with a track I, the track I is flexibly connected with a track II, a balancer is connected with a pulley on the track II, the pressing machine is arranged on the steel structure I through a suspension device, a pneumatic-hydraulic booster is arranged on a steel structure II and provides pressing power for the pressing machine, and a cylinder provides drive power for moving and locking of a counter-force mechanism of the pressing machine. By using compressed air as a power source, a pressing head is driven by the pneumatic-hydraulic booster for pressing the inner ring of the inner bearing of the intermediate/rear axle hub; and the movable suspension system is arranged on the steel structure, thus the inner ring of the inner bearing of the intermediate/rear axle hub can be separately pressed by using the inner wall of a shaft pipe of the intermediate/rear axle hub as a counter-force point. The pressing machine has the advantages of simple structure, small volume, simplicity in operation, convenience for movement, high assembly efficiency, reliable pressing quality, low labor intensity and high flexibility degree; and whether the inner ring of the bearing is pressed in place is controlled through setting a system pressure parameter.
Description
Technical field
The utility model relates to the bearing press mounting device of assembly parts assembling in the automobile manufacturing field, the hub inner bearing inner ring pressing machine in the particularly middle rear axle assy assembling process.
Background technology
In the rear axle assy assembly process, the bearing that needs the hub inner bearing inner ring to be press fit into hub axle tube is installed on the cylindrical in commercial car, and this hub inner bearing inner ring and hub axle tube cylindrical are interference fit.At present; The axle assembly assembling has all realized the assembly line continuous productive process; Every line is provided with the some covers of flow circuit anchor clamps and some stations is set, and anchor clamps begin to circulate when assembly line starts, and the online body designs fix of each station beat is accomplished assembling action separately down.Three kinds of forms of the general employing of back axle hub inner bearing inner ring assembling in existing: 1, knock assembling manually: middle rear axle assy is fixed on the pallet of assembly line by deadweight; Pallet body along the line moves; The hub bearing inner ring is enclosed within on the hub axle tube cylindrical, adopts sleeve and stamp manual work to knock assembling; 2, adopt the hot cover process assembling: utilize principle of expanding with heat and contracting with cold, the hub bearing inner ring is heated to 90-110 ℃, make its endoporus after diameter receives thermal change big, the hub bearing inner ring is enclosed within on the hub axle tube cylindrical, adopt manual work to knock assembling; 3. existing C type double end pressing machine assembling: be lifted on the line body C type double end pressing machine and the cross span body, both sides counter-force each other press-fit the hub bearing inner ring simultaneously.More than three kinds of modes all have certain applied defect or restriction.Strike the running in bearings inner ring manually: because bearing specification big (∮ 90) cooperating under the interference state, generally need knock more than 5 times, each percussion power is about 60Kg, and labour intensity is big; Simultaneously, because the artificial inequality of knocking the uncontrollable of strength and knocking strength causes damage the early stage of bearing assembling easily, cause car load assembling rear bearing initial failure under the influence that receives artificial uncertain factor; Avoided the big problem of assembling labour intensity though adopt the assembling hot cover process; But the influence of artificial uncertain factor still exists, and simultaneously, adds thermal expansion meeting generation distortion because bearing inner race receives; Its design accuracy and assembly precision will inevitably be affected, and cause hub bearing initial failure; Adopt existing C type bipitch structure pressing machine assembling,, press-fit counter-force and be easy to problems such as processing and assembly precision though it is big to solve assembling labour intensity; But it need just must include the technological design scope at the production line first stage of construction; Install synchronously during with the assembly line Installation and Debugging,, be not difficult to independent the interpolation if consider the later stage early stage because it relates to line body integral layout and space mounting factor; Its appearance and size is big simultaneously; Operation is heavy, and using needs both sides compounding practice simultaneously, can the beat of production line be had a strong impact on.
Summary of the invention
For overcoming the deficiency of existing hub bearing inner ring assembly structure; The goal of the invention of the utility model is to provide a kind of middle back axle hub inner bearing inner ring pressing machine; Adopt the single head press-fit approach; The press-fiting of back axle both sides hub bearing inner ring in independent completion the in assembly line pallet motion process, alternative conventional artificial is manually knocked and is adopted hot jacket to knock assembly technology, and many deficiencies of avoiding the existing structure pressing machine to exist; To improve bearing assembly quality and production efficiency, reduce labour intensity.
For realizing above-mentioned purpose; The steel structure one of the utility model is rigidly connected with the track one of suspension arrangement, and track one flexibly connects with track two, and balancer is connected with coaster on the track two; Pressing machine is installed on the steel structure one through suspension arrangement; The apparatus for pressurizing gas, liquid of pressing machine is installed on the steel structure two, and apparatus for pressurizing gas, liquid is that pressing machine provides and press-fits power, and cylinder is that the counter-force mechanism kinematic and the locking of pressing machine provides driving power;
The piston rod one of the cylinder of the counter-force mechanism of said pressing machine is connected with the tensioner mandrel; Have interface one and interface two on the compressed oil cylinder, the piston rod two of compressed oil cylinder is fixed together through connecting end cap and cylinder, and the compressed oil cylinder piston is fixed on the piston rod two; On the drive end bearing bracket of compressed oil cylinder pressure head is housed, pressure head adopts and divides body structure, is equipped with on the pressure head to press-fit guide ring; The tensioner mandrel passes piston rod two, and wedge is equipped with in its termination, is connected with slide block on the inclined-plane of wedge; The tensioner steel ball is housed on the slide block; The tensioner steel ball can move in the hole of fixed cover, and fixed cover is fixed together through the piston rod two of screw and compressed oil cylinder, and operating grip is installed in the end of cylinder; The piston rod two of compressed oil cylinder and piston are standing part in press-fiting, compressed oil cylinder, rear end cap, drive end bearing bracket are motion parts in press-fiting.
The utility model utilizes compressed air as power source; Press-fit middle back axle hub bearing inner ring through the apparatus for pressurizing gas, liquid drive ram; Adopt moveable suspended system to be installed on the steel structure; Back axle hub axle tube inwall is as the counter-force point in the utilization, and back axle hub bearing inner ring press-fits separately in can realizing, back axle hub bearing inner ring changes mechanical work into by handwork in making.
During the pressing bearing inner ring, manually bearing inner race is enclosed within on the central siphon cylindrical earlier, moves down pressing machine to axle assembly central siphon position height; The pressing machine that moves forward makes counter-force mechanism go deep into the hub axle tube inner chamber fully; Press the other start button of pressing machine operating grip, compressed air gets into the cylinder back cavity, promotes mandrel and wedge and travels forward; Steel ball on the wedge outwards moves along the pilot hole on the fixed cover, tensioner wheel hub shaft tube inner wall; At this moment, pressing machine compressed oil cylinder ante-chamber begins oil-feed, promotes the compressed oil cylinder reach, and compressed oil cylinder drives pressure head bearing inner race is pressed into the bearing installation position.After being press-fit into place, the pressure head stop motion starts stop button then; The compressed oil cylinder back cavity begins oil-feed, promotes to move behind the compressed oil cylinder, and compressed oil cylinder drives pressure head and withdraws from along oil cylinder piston bar two; This moment, compressed air got into the cylinder ante-chamber, drove mandrel and wedge and retreated, and steel ball moves inward along the pilot hole on the fixed cover and breaks away from the hub axle tube inwall; Manually move pressing machine backward, away from the central siphon endoporus.Press-fit and finish, axle assembly flows into subsequent processing with anchor clamps.
The utility model compared with prior art has the following advantages:
1, replace the traditional-handwork assembly technology, labor strength reduces by 80%, can effectively enhance productivity;
Counter-force reaches 30KN when 2, exerting pressure because of bearing, according to the axle assembly design feature, counter-force is applied to the step place of hub axle tube endoporus; The counter-force structure adopts the wedge device, adopts 120 degree to be uniformly distributed with the steel ball tensioner, and this press-fits the counterforce device modern design, and mechanism is reliable, and pressure head adopts the split design, can change according to product line, and the flexibility degree is high;
3, it is simple to press-fit drive unit, and power source is a compressed air, and working environment requires low;
4, adopt cold conditions static pressure dress, need not heating,, can save energy and reduce the cost significantly than the traditional hot compression technology;
5, set through pressure parameter, guarantee that the hub bearing inner ring is press-fit into place, the production assurance ability is high, good stability;
6, operating grip and press button connection and reasonable arrangement, the ergonomic principle;
7, adopt hang lifting machine, floor space is little, and two work steps are simultaneously only with a button control, and are easy to operate;
Steady, noiselessness can improve the shopwork environment when 8, equipment was worked.
9, compact conformation is reasonable, and volume is little, and is simple to operate, conveniently moving, and fault rate is low, and is easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structure diagram of pressing machine 2 among Fig. 1.
The specific embodiment
Like Fig. 1, shown in Figure 2; Steel structure 1 is rigidly connected with the KPK track 1 of suspension arrangement 7; KPK track 1 flexibly connects with KPK track 29, and balancer 10 is connected with coaster 11 on the KPK track 29, and pressing machine 2 is installed on the steel structure 1 through suspension arrangement 7; The apparatus for pressurizing gas, liquid 6 of pressing machine 2 is installed on the steel structure 25, and coaster 11 can be along the KPK track
Two9 move left and right, the KPK track
Two9 can be along the KPK track through coaster 11
One8 move forward and backward, and pressing machine 2 moves up and down through balancer 10, realize the motion of pressing machine about in the of 2, all around six direction through said apparatus.Because bearing inner race and vehicle bridge hub axle tube are interference fit; Pressure needs 20～30KN; The utility model technology press-fits employing gas-liquid pressure-boosting cylinder 6, and pressure can reach 70KN, can cover all hub bearing inner rings fully and press-fit pressure demand; But air pressure step-less adjustment, counterforce device drive and adopt cylinder 13.
The piston rod 1 of the cylinder 13 of the counterforce device of pressing machine 2 is connected with tensioner mandrel 15; The piston rod 2 31 of compressed oil cylinder 19 is fixed together with cylinder 13 through connecting end cap 32, and oil cylinder piston 18 is fixed on the piston rod 2 31, before the drive end bearing bracket 30 of compressed oil cylinder 19 pressure head 22 is housed; Be equipped with on the pressure head 22 and press-fit guide ring 23, tensioner mandrel 15 passes piston rod 2 31, and wedge 27 is equipped with in its termination; Slide block 26 is housed on the inclined-plane of wedge 27, the tensioner steel ball 25 after the quenching is housed on the slide block 26, tensioner steel ball 25 can move in the hole of fixed cover 24; Wedge 27 adopts the triangular prism structure to be 120 ° of distributions; Respectively arrange a steel ball 25 on three inclined-planes, be 120 ° of holes that have three diameters less than steel ball 25 diameters on the fixed cover 24, as the pilot hole of steel ball motion; Steel ball 25 can slide up and down in this hole; Fixed cover 24 is fixed together through the piston rod 2 31 of screw 29 with compressed oil cylinder 19, and operating grip 12 is installed in cylinder 13 terminations, and pressing machine 2 links to each other with hitch 7 through the suspension ring 21 that are contained on the pressure head 22.The piston rod 2 31 of compressed oil cylinder 19 and piston 18 are standing part in press-fiting, compressed oil cylinder 19, rear end cap 16, drive end bearing bracket 30 are motion parts in press-fiting.
The operation principle of pressing machine 2 is following: the back cavity of cylinder 13 gets into compressed air; Piston rod 1 promotes tensioner mandrel 15 and wedge 27 moves forward; Under the restriction and effect of fixed cover 24; Slide block 26 above the wedge 27 moves forward along the pilot hole at fixed cover 24 with tensioner steel ball 25, contacts with the hub axle tube inwall place transition arc of workpiece 4, and pressing machine head section card can not be withdrawed within it; This moment, apparatus for pressurizing gas, liquid 6 interior pressure oils passed through the interface 2 20 oil-feed cylinder ante-chambers of compressed oil cylinder 19, owing to oil cylinder piston 18 is fixed on the piston rod 31, under oil pressure actuated; Compressed oil cylinder 19 and rear end cap 16, drive end bearing bracket 30 travel forward along piston rod 2 31; Drive end bearing bracket 30 drives pressure head 22 and press-fits hub bearing inner ring 28, press-fits counter-force owing to exist, and pressure head 22, piston 18 and piston rod 2 31 have the trend of motion backward; Under the restriction of tensioner steel ball 25; Overcome and press-fit counter-force, fixed cover 24, piston 18 and piston rod 2 31 can not be moved backward, pressure head 22 is pressed into hub bearing inner ring 28.Press-fit finish after, through oil cylinder interface 1, pressure oil gets into the back cavity of compressed oil cylinder 19, drives compressed oil cylinder 19, rear end cap 16, drive end bearing bracket 30 and pressure head 22 and withdraws from; The ante-chamber of cylinder 13 gets into compressed air, and piston rod 1 drives mandrel 15 and wedge 27 is retreated, and slide block 26 leaves the hub axle tube inwall with tensioner steel ball 25, and operation moving handle 12 shifts out pressing machine 2.Pressure head 22 splits design can adapt to different train, changes quick.
The operating process of the utility model is: workpiece 4 is contained on the anchor clamps 3; On workpiece 4, be inserted in the bearing inner race 28 that need press-fit,, move the height of pressing machine 2 to workpiece 4 through the handle on the pressing machine 2 12; And through suspension arrangement 7 in about, the position of all around adjustment pressing machine 2; Make pressing machine 2 stretch into the central siphon of workpiece 4, the switch that starting handle 12 is other, the internal expanding steel ball 25 of pressing machine counterforce device can the tension shaft inside pipe walls; This moment, the pressure oil pressure head 22 that can promote pressing machine 2 of apparatus for pressurizing gas, liquid 6 moved forward, and bearing inner race 28 is pressed into; Close the switch on handle 12 sides, the pressure head 22 that the buffer brake oil of apparatus for pressurizing gas, liquid 6 can spur pressing machine 2 moves backward, and the internal expanding steel ball 25 of counterforce device leaves shaft tube inner wall simultaneously, and completion is moved and press-fited.
Claims (3)
1. back axle hub inner bearing inner ring pressing machine in a kind; It is characterized in that: steel structure one (1) is rigidly connected with the track one (8) of suspension arrangement (7); Track one (8) flexibly connects with track two (9); Balancer (10) is connected with coaster (11) on the track two (9), and pressing machine (2) is installed on the steel structure one (1) through suspension arrangement (7), and the apparatus for pressurizing gas, liquid (6) of pressing machine (2) is installed on the steel structure two (5); Apparatus for pressurizing gas, liquid (6) press-fits power for pressing machine (2) provides, and cylinder (13) provides driving power for the counter-force mechanism kinematic and the locking of pressing machine (2).
2. back axle hub inner bearing inner ring pressing machine in according to claim 1, it is characterized in that: the piston rod one (14) of the cylinder (13) of the counter-force mechanism of said pressing machine (2) is connected with tensioner mandrel (15); Have interface one (17) and interface two (20) on the compressed oil cylinder (19); The piston rod two (31) of compressed oil cylinder (19) is fixed together with cylinder (13) through connecting end cap (32); Oil cylinder piston (18) is fixed on the piston rod two (31), on the drive end bearing bracket (30) of compressed oil cylinder (19) pressure head (22) is housed, and tensioner mandrel (15) passes piston rod two (31); Wedge (27) is equipped with in its termination; Be connected with slide block (26) on the inclined-plane of wedge (27), tensioner steel ball (25) is housed on the slide block (26), tensioner steel ball (25) can move in the hole of fixed cover (24); Fixed cover (24) is fixed together through the piston rod two (31) of screw (29) with compressed oil cylinder (19); Operating grip (12) is installed in the end of cylinder (13), and the piston rod two (31) of compressed oil cylinder (19) and piston (18) are standing part in press-fiting, and compressed oil cylinder (19), rear end cap (16), drive end bearing bracket (30) are motion parts in press-fiting.
3. back axle hub inner bearing inner ring pressing machine in according to claim 1 is characterized in that: pressure head (22) adopts and divides body structure, is equipped with on the pressure head (22) to press-fit guide ring (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204198761U CN202292060U (en) | 2011-10-30 | 2011-10-30 | Pressing machine of inner ring of inner bearing for intermediate/rear axle hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204198761U CN202292060U (en) | 2011-10-30 | 2011-10-30 | Pressing machine of inner ring of inner bearing for intermediate/rear axle hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202292060U true CN202292060U (en) | 2012-07-04 |
Family
ID=46361037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204198761U Expired - Lifetime CN202292060U (en) | 2011-10-30 | 2011-10-30 | Pressing machine of inner ring of inner bearing for intermediate/rear axle hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202292060U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465222A (en) * | 2013-09-24 | 2013-12-25 | 江苏四达动力机械集团有限公司 | Hydraulic rapping bar for diesel engine |
| CN103495955A (en) * | 2013-09-30 | 2014-01-08 | 南车戚墅堰机车车辆工艺研究所有限公司 | Tool and method for assembling thin-wall special-shaped pieces in large magnitude of interference |
| CN103586674A (en) * | 2013-11-21 | 2014-02-19 | 方盛车桥（柳州）有限公司 | Single-end pressing fit machine for bearing inner ring of rear axle hub |
| CN104440040A (en) * | 2014-12-01 | 2015-03-25 | 郑州精益达汽车零部件有限公司 | Press for assembling oil seal seat ring, bearing inner ring and axle housing and hydraulic system of press |
| CN104842316A (en) * | 2015-05-25 | 2015-08-19 | 聊城大学 | Automatic bearing inner-ring mounting machine |
| CN107649862A (en) * | 2017-10-17 | 2018-02-02 | 河南瑞创通用机械制造有限公司 | A kind of belt pulley press-loading apparatus |
| CN111069882A (en) * | 2019-12-31 | 2020-04-28 | 山东临工工程机械有限公司 | Automatic press-fitting machine for drive axle hub assembly |
-
2011
- 2011-10-30 CN CN2011204198761U patent/CN202292060U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465222A (en) * | 2013-09-24 | 2013-12-25 | 江苏四达动力机械集团有限公司 | Hydraulic rapping bar for diesel engine |
| CN103495955A (en) * | 2013-09-30 | 2014-01-08 | 南车戚墅堰机车车辆工艺研究所有限公司 | Tool and method for assembling thin-wall special-shaped pieces in large magnitude of interference |
| CN103586674A (en) * | 2013-11-21 | 2014-02-19 | 方盛车桥（柳州）有限公司 | Single-end pressing fit machine for bearing inner ring of rear axle hub |
| CN103586674B (en) * | 2013-11-21 | 2016-04-13 | 方盛车桥（柳州）有限公司 | Rear axle hub bearing inner race single head pressing machine |
| CN104440040A (en) * | 2014-12-01 | 2015-03-25 | 郑州精益达汽车零部件有限公司 | Press for assembling oil seal seat ring, bearing inner ring and axle housing and hydraulic system of press |
| CN104842316A (en) * | 2015-05-25 | 2015-08-19 | 聊城大学 | Automatic bearing inner-ring mounting machine |
| CN107649862A (en) * | 2017-10-17 | 2018-02-02 | 河南瑞创通用机械制造有限公司 | A kind of belt pulley press-loading apparatus |
| CN107649862B (en) * | 2017-10-17 | 2023-04-21 | 中联农业机械股份有限公司 | Belt pulley press-fitting device |
| CN111069882A (en) * | 2019-12-31 | 2020-04-28 | 山东临工工程机械有限公司 | Automatic press-fitting machine for drive axle hub assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |