CN101560590A - Holding device - Google Patents
Holding device Download PDFInfo
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- CN101560590A CN101560590A CNA200910084015XA CN200910084015A CN101560590A CN 101560590 A CN101560590 A CN 101560590A CN A200910084015X A CNA200910084015X A CN A200910084015XA CN 200910084015 A CN200910084015 A CN 200910084015A CN 101560590 A CN101560590 A CN 101560590A
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- bearing
- clamping device
- sliding sleeve
- cylinder
- sleeve
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Abstract
The invention relates to a holding device, in particular to the holding device used for holding a long pipe type workpiece in quenching process. The device comprises a hollow main shaft, a supporting sleeve, a dual-action cylinder, a sliding sleeve, a crank plate and a holding claw, wherein the hollow main shaft can rotatably support; the supporting sleeve is coaxially sleeved on the hollow main shaft and axially and fixedly connected with the main shaft; the dual-action cylinder can rotatably support relative to the supporting sleeve; the inner surface of the sliding sleeve can be glidingly supported on the surface of an outer circumference of the supporting sleeve; the crank plate is hinged with the end parts of the supporting sleeve and the sliding sleeve respectively; and the holding claw is fixedly connected with the crank plate.
Description
Technical field
The present invention relates to a kind of clamping device, especially when quench treatment, be used for the clamping device of clamping long pipe type workpiece.
Background technology
In the processing long pipe type workpiece, when for example being used for the workpiece such as drilling rod of unpowered axletree, field drilling and exploitation on the automobile trailer, need carry out quench treatment to workpiece.When quenching, need workpiece to be machined be clamped with certain power usually, then to workpiece carry, processing etc.
Long pipe fittings is being heat-treated, for example during quench treatment, normally red-hot workpiece is vertically being put into cooling pool.So just a section of workpiece need be clamped, then it is sling, move in the cooling pool.At this moment, not only need to clamp securely workpiece, wish also that simultaneously heat-eliminating medium passes happyly from pipe fitting, so that to cooling off uniformly inside and outside the pipe fitting.
Chinese invention patent 200610030127.3 discloses a kind of hollow pipe clamp belt rotary cutting device.Wherein, by the hollow positioning core axle rotation of electric motor driving.At the front end of positioning core axle, in hollow positioning core axle, be provided with push-pull shaft.By with positioning core axle on groove and the skewed slot on the push-pull shaft match, apply holding force with voussoir outer wall to processed pipe fitting in circumferential, thereby clamp processed pipe fitting and applying mechanical cutting processing.This clamping device is from processed pipe fitting inside it to be carried out clamping, and its main purpose is that workpiece is cut, and does not therefore make liquid pass through the requirement of workpiece inside.Therefore, use this clamping device can not make the heat-eliminating medium pipe fitting inside by being held swimmingly.
Chinese invention patent 00133633.9 discloses a kind of hydraulic cutting special machine clamping device.Wherein, mainly be to be power with hydraulic efficiency oil, by be provided with the machine clamping device in clamping, unclamp and oil return circuit, come clamping to be cut the workpiece of processing.This clamping device mainly adopts the power of hydraulic pressure as holding workpiece, its objective is the slit increasing that makes between each part, thereby allows lubricating oil to pass through, and avoids the workpiece surface corrosion.This clamping device can only be implemented clamping and drive its rotation workpiece to be machined, but can not be along axis of workpiece direction travelling workpiece.In addition, owing to this clamping device is used for workpiece is carried out machining, so its holding force is big, the accuracy requirement height of whole device, thereby makes manufacturing cost increase.
Chinese invention patent 00133633.9 discloses a kind of hydraulic cutting special machine clamping device.Wherein, mainly be to be power with hydraulic efficiency oil, come clamping work pieces by ringfeder.Holding workpiece ground diameter range is very limited, and ringfeder is changed very inconvenient; This processing to the different diameter workpiece that makes is subjected to severely restricts.
Summary of the invention
The object of the present invention is to provide a kind of clamping device, this device can firm grip by heat treated workpiece and drive its rotation, also guarantee simultaneously heat-eliminating medium can be swimmingly inside by processed workpiece.
For achieving the above object, according to the invention provides a kind of clamping device, comprise
The hollow spindle of rotatable support;
Be sleeved on coaxially on the hollow spindle and the bearing sleeve that connects of axial restraint with it;
Double-acting cylinder, the described relatively bearing sleeve rotatably support of described double-acting cylinder;
Sliding sleeve, the internal surface of described sliding sleeve are bearing on the external peripheral surface of described bearing sleeve slidably;
Crank web, described crank web are articulated and connected with the end of bearing sleeve and sliding sleeve respectively;
The jaw of fixedlying connected with crank web.
According to clamping device of the present invention, also comprise housing and the end plate of fixedlying connected with housing, described hollow spindle is coaxial rotationally to be arranged in the housing.
Fixedly connected with end plate in the bottom of the cylinder body of described double-acting cylinder, described cylinder body is bearing on the housing by end plate.
On sliding sleeve, the overhang bracket of the piston rod of described double-acting cylinder is on described sliding sleeve by the bearing rotatably support for the hollow piston rod of described double-acting cylinder.
The front end of described sliding sleeve is provided with groove, and an end hinged support of mobile bearing pin is on crank web, and its other end is slidably located in the described groove; An end of described crank web is articulated and connected by the front end of supporting shaft and bearing sleeve.
Described bearing is a taper roller bearing, and every group of bearing comprises two.
Described bearing sleeve is circumferentially fixedlyed connected with hollow spindle by key.
Described double-acting cylinder also comprises cylinder end piece, and described cylinder end piece is fixedlyed connected with cylinder block by screw, and the external peripheral surface of its inner circumferential surface and piston rod is tightly connected slidably.
Be respectively equipped with the oil hole and the oiling passage that are used for to described bearing filling lubricating oil on described cylinder end piece and the piston rod.
According to clamping device of the present invention, under the driving of double-acting cylinder, make the jaw swing, thereby clamp processed workpiece securely.As long as can clamp workpiece and drive its rotation according to the holding force that clamping device of the present invention provided, and opposing for example puts on the reactive force of workpiece when workpiece is carried out machining, so holding force does not need very high, the clamping precision does not need very high yet.For satisfying above-mentioned requirements, adopting pressurized gas according to the present invention is motivating force, and this will reduce the requirement to each part precision and intensity effectively, thereby reduce manufacturing cost.Putting before this, clamping device according to the present invention provides reliable holding force with simple structure, suitable cost.According to the present invention, can certainly adopt other media that motivating force is provided.For example, adopt hydraulic efficiency oil or emulsion etc. as pressure medium.
Especially clamping device according to the present invention has adopted hollow spindle, thus allow heat-eliminating medium from hollow spindle by entering processed workpiece inside, thereby its inside is cooled off uniformly.Moreover, when moving vertically, can also apply the power of axial direction due to processed workpiece, thereby it is moved vertically or locate by hollow spindle according to clamping device of the present invention.
Owing to adopted taper roller bearing, guaranteeing to bear axial force effectively under the prerequisite that the relative double-acting cylinder of hollow spindle rotates freely.Guaranteed working life thus according to apparatus of the present invention.
Description of drawings
Fig. 1 is the sectional view according to clamping device of the present invention;
Fig. 2 is the side-view according to clamping device front end crank web of the present invention.
The drawing reference numeral title:
1 hollow spindle
2. copper sliding sleeve
3. housing
4. end plate
5. cylinder
6. piston rod
7. cylinder body
8. sealing-ring
9. cylinder end piece
10. end cover
11. sealing-ring
12. sliding sleeve
13. mobile bearing pin
14. crank web
15. jaw
16. bearing
17. bearing sleeve
18. interior cover
19. key
20. gusset plate
21. groove
22. supporting shaft
1a. plunger shaft inlet mouth
2a. rod end chamber inlet mouth
3a. lubricated hydraulic fluid port and oil groove
Embodiment
Fig. 1 is the sectional view according to clamping device of the present invention.Before with right side among Fig. 1 being in the following description, after the left side is.As shown in the figure, clamping device according to the present invention comprises a hollow spindle 1.In the actual course of processing, heat-eliminating medium--is water coolant in the present embodiment--and flows through the inside that enters by the workpiece of quench treatment from the hollow space of hollow spindle 1, thereby cool off internally by the workpiece of quench treatment.
Bearing sleeve 17 and hollow spindle 1 concentric setting.As can be seen from the figure, because the needs of complete processing and installation, bearing sleeve 17, sliding sleeve 12 are made up of a plurality of parts.But in the present embodiment, for convenience of description for the purpose of, according to function the combination of these parts is referred to as bearing sleeve 17, sliding sleeve 12.Described bearing sleeve 17 is fixedly mounted on the hollow spindle 1 by key 19 rotations, and according to the size of required transmission moment of torsion, key 19 can be a plurality of.
At the front end of bearing sleeve 17, also be provided with through hole, supporting shaft 22 wherein is installed.In the present embodiment, three supporting shafts 22 are set, therefore are provided with three through holes accordingly.
As shown in Figure 1, clamping device also has one and is arranged at the housing 3 of hollow spindle 1 outside and the end plate 4 of fixedlying connected with it.Housing 3 along the circumferential direction envelopes hollow spindle 1 from the outside, and housing 3 supports hollow spindle 1 by 2 pairs of sliding sleeves that for example are made of copper and allows hollow spindle 1 with respect to housing 3 rotations.Housing 3 also avoids hollow spindle 1 to contact with external object in the course of the work, for operator provide safe Working environment, guarantees also that simultaneously the main shaft 1 of rotation is not subjected to outside contamination.End plate 4 has a centre hole, and hollow spindle 1 passes this centre hole.End plate 4 coaxially is fixed on the housing 3 with its center axially bored line and housing 3.Like this, end plate 4 provides a mounting support for cylinder body 7 and cylinder piston 6.
Be fixed on the end plate 4 by screw or other mode of connection or web member cylinder body 7, thereby make that the relative housing of double-acting cylinder 3 is fixing, but hollow spindle 1 can relatively rotate double-acting cylinder.Whole double-acting cylinder is the hollow cylinder shape, and promptly the plunger shaft of cylinder, piston rod, cylinder body and cylinder cap all are ducted bodies.This structure guarantee whole double-acting cylinder can with hollow spindle 1 coaxially suit and make both to rotate relatively thereon by bearing supporting.Among the embodiment shown in Figure 1, only the front end at double-acting cylinder is provided with bearing 16.Unshowned in the drawings according to another embodiment of the invention in, can also between the external peripheral surface of the inner circumferential surface of double-acting cylinder cylinder body 7 and bearing sleeve 17, one group of bearing be set again near near end plate 4.To improve stability of strutting system like this to double-acting cylinder.
Front portion at bearing sleeve 17 is equipped with sliding sleeve 12 coaxially.Sliding sleeve 12 can slide mutually with bearing sleeve 17 and form sealed space by the sealing-ring that is arranged on sliding sleeve 12 inner circumferential surfaces, accommodates lubricating oil in this space.For clarity sake, do not represent described sealing-ring among the figure.Obviously, on the cylinder in clamping device according to the present invention and the corresponding position of piston rod thereof, be equipped with corresponding sealing-ring, but this type of sealing-ring of perfect representation not in the accompanying drawing, and schematically represented.
The front end of sliding sleeve 12 has the wall of two protrusions, constitutes a groove 21 thus.In the present embodiment, the front end at sliding sleeve 12 is provided with three such grooves 21.These grooves 21 are at the front end edge circumferential direction uniform distribution of sliding sleeve 12, i.e. alternate 120 ° of distributions mutually.This groove 21 is mainly used in and holds the mobile bearing pin 13 that is articulated and connected with crank web 14.The diameter of the width of groove 21 and mobile bearing pin 13 is complementary, and mobile bearing pin 13 can be moved freely along vertical direction among the figure in groove 21.
The front end of piston rod 6 is bearing on the external peripheral surface of sliding sleeve 12 by bearing 16.When piston rod 6 from after forward (promptly the figure from left to right) when stretching out, piston rod 6 drives sliding sleeves 12 motion together on bearing sleeve 17 by cover in the bearing 16.Otherwise, when piston rod 6 withdrawals, also will be with sliding sleeve 12 to return backward.As shown in Figure 1, the front end of piston rod 6 is supported on the external peripheral surface of sliding sleeve 12, and is provided with sealing-ring 11 between the two.In the present embodiment, sealing-ring 11 is used for the sealing lubricating oil in the chamber of (i.e. figure left side) and prevent that extraneous dust from entering in the described chamber thereafter.In the present embodiment, this support to piston rod 6 ends is a kind of slidably support.
Fig. 2 is the side-view according to clamping device of the present invention, has wherein schematically shown crank web 14.As shown in Figure 2, the front end at whole clamping device is provided with crank web 14.There is shown two crank webs 14.These two crank webs 14 are distortion slightly in Fig. 2, but can find out still that from figure crank web 14 is the L type substantially.In the present embodiment, the length of two of crank web 14 arms is equal substantially.The end of upright arm is provided with through hole in the drawings, is used to hold installation mobile bearing pin 13, the supporting shaft 22 that is connected with bearing sleeve 17 and jaw 15.In the present embodiment, jaw 15 rigidly fixes and is installed on the crank web 14.The quantity of crank web 14 is arranged on the twice of groove 21 quantity of sliding sleeve 12 front ends, and crank web 14 uses in pairs.
Clamping device according to the present invention as shown in Figure 1 is in the original state of working position, and promptly this moment, jaw 15 was in the not shown state of being lived by the hardened steel tube grip.When hollow spindle 1 rotated, moment of torsion passed to bearing sleeve 17 by key 19, and then reaches on sliding sleeve 12 and the jaw 15 by supporting shaft 22, crank web 14, mobile bearing pin 13; Jaw 15 drives Workpiece Rotating.
In that long tube-when carrying out quench treatment, this clamping device uses in pairs to workpiece-be generally, promptly be oppositely arranged coaxially vertically.Housing 3 drives whole clamping device earlier and moves so that put into workpiece between two clamping devices backward.Rod end chamber to double-acting cylinder applies pressurized air, thereby piston rod 6 is moved backward.Piston rod 6 drives bearing 16 thereupon and sliding sleeve 12 moves together backward.Mobile bearing pin 13 moves backward with sliding sleeve 12.Because supporting shaft 22 is arranged in bearing sleeve 17, and bearing sleeve 17 maintains static with hollow spindle 1, so upwards swing around supporting shaft 22 by crank web 14 pulling jaws 15, thereby three jaws 15 be separated from each other so that hold workpiece therebetween.After workpiece being put between two clamping devices, housing 3 drives whole clamping device and moves right and make hollow spindle 1 top tight workpiece in two clamping devices, thus heat-eliminating medium-be in the present embodiment High-Pressure Water--can flow through the workpiece endoporus by hollow spindle 1.Plunger shaft to double-acting cylinder applies pressurized air, thereby piston rod 6 is moved forward.Piston rod 6 drives bearing 16 thereupon and sliding sleeve 12 moves forward together.Because supporting shaft 22 is motionless, promote jaw 15 clamping work pieces and can drive it to turn round together by crank web 14.Quenching by workpiece after the water flowing in the outer pouring of for some time finishes, and applies pressurized air to the rod end chamber of double-acting cylinder, thereby piston rod 6 is moved backward.Piston rod 6 drives bearing 16 thereupon and sliding sleeve 12 moves together backward.Mobile bearing pin 13 moves backward with sliding sleeve 12, and supporting shaft 22 is motionless, by opening on the crank web 14 pulling jaws 15; The whole clamping device of housing 3 drives moves backward and makes two clamping devices remove workpiece, and workpiece shifts out the whole operation in back and finishes.
Claims (9)
1. a clamping device comprises
The hollow spindle of rotatable support (1);
Be sleeved on hollow spindle (1) coaxially and go up also the bearing sleeve (17) of axial restraint connection with it; It is characterized in that, also comprise:
Double-acting cylinder (5), the described relatively bearing sleeve of described double-acting cylinder (5) (17) rotatably support;
Sliding sleeve (12), the internal surface of described sliding sleeve (12) is bearing on the external peripheral surface of described bearing sleeve (17) slidably;
Crank web (14), described crank web (14) are articulated and connected with the end of bearing sleeve (17) and sliding sleeve (12) respectively;
The jaw (15) of fixedlying connected with crank web (14).
2. clamping device according to claim 1 is characterized in that, also comprises housing (3) and the end plate (4) of fixedlying connected with housing (3), and described hollow spindle (1) is coaxial rotationally to be arranged in the housing (3).
3. clamping device according to claim 1 and 2 is characterized in that, fixedlys connected with end plate (4) in the bottom of the cylinder body (7) of described double-acting cylinder (5), and described cylinder body (7) is bearing on the housing (3) by end plate (4).
4. according to one of aforesaid right requirement described clamping device, it is characterized in that, on sliding sleeve (12), the overhang bracket of the piston rod (6) of described double-acting cylinder (5) is on described sliding sleeve (12) by bearing (16) rotatably support for the hollow piston rod (6) of described double-acting cylinder (5).
5. according to one of aforesaid right requirement described clamping device, it is characterized in that, the front end of described sliding sleeve (12) is provided with groove (21), and an end hinged support of mobile bearing pin (13) is on crank web (14), and its other end is slidably located in the described groove (21); An end of described crank web (14) is articulated and connected by the front end of supporting shaft (22) with bearing sleeve (17).
6. according to claim 3 or 4 described clamping devices, it is characterized in that described bearing (16) is a taper roller bearing, every group of bearing (16) comprises two.
7. according to one of aforesaid right requirement described clamping device, it is characterized in that described bearing sleeve (17) is circumferentially fixedlyed connected with hollow spindle (1) by key (19).
8. according to one of aforesaid right requirement described clamping device, it is characterized in that, described double-acting cylinder (5) also comprises cylinder end piece (9), described cylinder end piece (9) is fixedlyed connected with cylinder block (7) by screw, and the external peripheral surface of its inner circumferential surface and piston rod (6) is tightly connected slidably.
9. according to one of aforesaid right requirement described clamping device, it is characterized in that, be respectively equipped with the oil hole and the oiling passage (3a) that are used for to described bearing (16) filling lubricating oil on described cylinder end piece (9) and the piston rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910084015XA CN101560590B (en) | 2009-05-12 | 2009-05-12 | Holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910084015XA CN101560590B (en) | 2009-05-12 | 2009-05-12 | Holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101560590A true CN101560590A (en) | 2009-10-21 |
| CN101560590B CN101560590B (en) | 2011-12-14 |
Family
ID=41219561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910084015XA Expired - Fee Related CN101560590B (en) | 2009-05-12 | 2009-05-12 | Holding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101560590B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726681A (en) * | 2015-04-08 | 2015-06-24 | 上海电气核电设备有限公司 | Fixing device and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598699Y (en) * | 2002-12-20 | 2004-01-14 | 肇庆端州电磁阀厂 | Pneumatic clamping and feeding device of numerical control lathe |
| CN201183127Y (en) * | 2008-03-07 | 2009-01-21 | 宁波市邱隘思必达轴承厂 | Pneumatic clamp device |
| CN201459191U (en) * | 2009-05-12 | 2010-05-12 | 北京科大鑫冶机电设备有限公司 | Holding device |
-
2009
- 2009-05-12 CN CN200910084015XA patent/CN101560590B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726681A (en) * | 2015-04-08 | 2015-06-24 | 上海电气核电设备有限公司 | Fixing device and application thereof |
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| Publication number | Publication date |
|---|---|
| CN101560590B (en) | 2011-12-14 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20111214 Termination date: 20150512 |
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| EXPY | Termination of patent right or utility model |