CN1631591A - Hydraulic clamping apparatus for machine tool - Google Patents
Hydraulic clamping apparatus for machine tool Download PDFInfo
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- CN1631591A CN1631591A CN 200410073490 CN200410073490A CN1631591A CN 1631591 A CN1631591 A CN 1631591A CN 200410073490 CN200410073490 CN 200410073490 CN 200410073490 A CN200410073490 A CN 200410073490A CN 1631591 A CN1631591 A CN 1631591A
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- mandrel
- main shaft
- lathe
- hydraulic
- piston
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Abstract
The invention hydraulic pressure clamping device on the lathe belongs to a mechanic technique field which solves problems that the existing clamping device is of difficult operation, low efficiency and low processing accuracy. The hydraulic pressure clamping device is set at the case at the lathe head including main shaft, clamping head and pulling tube. The pulling tube is fixed together with the clamping head inserting into main shaft with the pulling tube at the end of the main shaft. The other end of the main shaft is installed with a hydraulic pressure cylinder with a piston inside fixed with the pulling tube. A core shaft pierce through the piston with two through holes set on the shaft axially of which the inner hole communicates respectively with the hydraulic cylinder cavities by both sides of the piston and its outer hole is linked with hydraulic channels. This clamping device is handily, high efficiency and great clamping force due to it achieves clamping in hydraulic principles, moreover can maintain considerable processing accuracy for the lathe so to lengthen its service life.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of lathe, particularly the clamping device in the lathe.
Background technology
Lathe generally is used to process middle-size and small-size workpiece, and its clamping device is connected with lathe spindle.Clamping device can clamp fast to workpiece, and main shaft drives workpiece or cutter rotation behind the clamping work pieces.
The clamping device of existing lathe is pure frame for movement mostly.As " instrument lathe clamping device " that Chinese patent 012466573 provides, it is made up of parts such as main shaft, trombone slide, chuck, adjustment disk, three-jaw seat and shift fork circles.Identical with common instrument lathe, this clamping device also is by stirring the shift fork circle clutch tapered sleeve to be moved, and promotes adjustment disk and moves, and chuck is tightened up workpiece is clamped.Because be to realize clamping by mechanical structures fully, therefore existing clamping device exists many weak points, mainly shows the following aspects:
1, each clamping workpiece all will be pulled shift fork, operation effort, inefficiency.
2, because outside whole mechanical device is exposed to, particularly shift fork stretches out longlyer, not only makes the profile of lathe not attractive in appearance, and takes up room, and unsafe hidden danger is arranged.
3, existing clamping device can enter in the parts such as chuck and trombone slide at the tiny metal powder that processing work produced, and directly influences the machining accuracy and the service life of lathe.
4, trombone slide and clutch pawl have off-centre slightly in the existing clamping device, promptly produce centrifugal force, can't high speed rotating.
Summary of the invention
The objective of the invention is provides a kind of hydraulic clamp of lathe at the existing the problems referred to above of traditional lathe clamping device, makes it have characteristics such as safe and reliable, easy to operate, operating efficiency height, and has automatic cleaning function.
Purpose of the present invention can realize by following technical proposal: the hydraulic clamp of this lathe is arranged at the headstock place of lathe, comprise main shaft, chuck and trombone slide, chuck and trombone slide are fixed together, be loaded in the main shaft, trombone slide is in the end of main shaft, it is characterized in that, the other end of described main shaft is equipped with a hydraulic cylinder, piston is arranged in the hydraulic cylinder, piston and trombone slide are connected, and a mandrel passes piston, and two through holes are arranged in mandrel vertically, the inner orifice of these two through holes communicates with the hydraulic cylinder cavity of piston both sides respectively, and the outer aperture of through hole is connected on the fluid pressure line.
The hydraulic clamp of this lathe is to utilize hydraulic principle, produces hydraulic oil by oil pump, enters in the hydraulic cylinder move left and right of control piston through fluid pressure line.At last,, utilize piston to drive trombone slide and move together, make the chuck clamping or unclamp workpiece because piston and trombone slide are fixed together.
In the hydraulic clamp of above-mentioned lathe, there is a mandrel seat outer end of described mandrel, the outer end of mandrel is loaded in the mandrel seat, the medial surface of mandrel seat has the bipassage ring connected in star, annular groove is in the position corresponding to the outer aperture of two through holes in the mandrel, and an oil receiving hole that leads to the mandrel seat outside is all arranged in each annular groove.
Utilize this structure, when the outer aperture on mandrel was rotated in different positions, annular groove all can make the oil receiving hole of hydraulic oil on the mandrel seat enter in the through hole of mandrel.
In the hydraulic clamp of above-mentioned lathe, described mandrel middle part has the retaining edge of protruding laterally, and retaining is along being connected by screw and hydraulic cylinder.Like this, mandrel and hydraulic cylinder are fixed together, and rotate along with the rotation of hydraulic cylinder.
In the hydraulic clamp of above-mentioned lathe, described trombone slide and chuck are joining by screw thread.
In the hydraulic clamp of above-mentioned lathe, a passage is arranged in the described mandrel vertically, a pore that connects that leads to the mandrel seat outside is arranged in the mandrel seat, connect pore and communicate with passage, the inner orifice of passage communicates with the inner chamber of trombone slide.In use, connect pore and air pump joins.The gases at high pressure that air pump produces can be successively flow to collet through connecing pore, passage, trombone slide inner chamber, make collet and main shaft clamp the position cleaning, and avoid occurring pressing from both sides inclined to one side phenomenon.
In this clamping device, hydraulic oil enters in the through hole of mandrel through oil receiving hole, annular groove successively.Hydraulic oil enters in the hydraulic cylinder from the through hole inner orifice, makes piston be subjected to hydraulic pressure and moves, and trombone slide also moves with piston, thereby chuck is unclamped or clamps.
Compared with prior art, the advantage of this clamping device is:
1, owing to the clamping that realizes by hydraulic principle workpiece,, improved work efficiency greatly so operation is very simple and convenient; Simultaneously, it also has higher clamping force, prevents that workpiece from skidding or obscission, improves the qualification rate of product processing, guarantees that the cutter utilization rate is higher.
2, after lathe adopts this clamping device, omit parts such as shift fork, made the good integrity of lathe, be difficult for the vibrations and the good looking appearance of lathe during high speed rotating.
3, this clamping device is by vent line, and the gases at high pressure that air pump is produced enter in the trombone slide, can prevent that between trombone slide and main shaft gap etc. located metal dust and entered, and makes lathe keep good machining accuracy, thereby prolongs its service life.
Description of drawings
Fig. 1 is the cutaway view of the hydraulic clamp of this lathe.
Fig. 2 is that Fig. 1 is along the A-A profile.
Among the figure, 1, mandrel; 2, oil receiving hole; 3, through hole; 4, passage; 5, mandrel seat; 51, annular groove 52, connect pore; 6, retaining edge; 7, hydraulic cylinder; 8, piston; 9, headstock; 10, chuck; 11, trombone slide; 12, main shaft.
The specific embodiment
As shown in Figure 1, the hydraulic clamp of this lathe is arranged at headstock 9 places of lathe, and this device is made up of mandrel seat 5, hydraulic cylinder 7, mandrel 1, piston 8, trombone slide 11, main shaft 12 and chuck 10.
In the present embodiment, chuck 10 and trombone slide 11 are fixed together by screw thread, are loaded in the main shaft 12.It is conical that chuck 10 is, and is in the end of main shaft 12.Move forward and backward by trombone slide 11, make main shaft 12 extruding or do not push chuck, make chuck 10 clampings or unclamp workpiece.
The other end at main shaft 12 has hydraulic cylinder 7.Piston 8 in the hydraulic cylinder 7 is fixed together with trombone slide 11.Therefore, the mobile trombone slide 11 that will drive of piston 8 moves together.Mandrel 1 passes piston 8, and insert in the mandrel seat 5 its outer end, and the inner is in the main shaft 12.
As shown in Figure 2, two through holes 3 and a passage 4 are arranged in the mandrel 1.As shown in Figure 1, at the medial surface of mandrel seat 5 bipassage ring connected in star 51 is arranged, annular groove 51 is in the position corresponding to the outer aperture of two through holes 3.The inner orifice of two through holes 3 communicates with hydraulic cylinder 7 cavitys of piston 8 both sides respectively.
An oil receiving hole 2 that leads to mandrel seat 5 outsides is all arranged in each annular groove 51.Join by oil receiving hole 2 and fluid pressure line.Obviously, under the effect of extraneous hydraulic pressure, piston 8 is moved, thereby make chuck 10 clamp or ease out workpiece.
As shown in Figure 1, in the present embodiment, there is retaining at mandrel 1 middle part along 6, and retaining is connected by screw and hydraulic cylinder 7 along 6.Like this, mandrel 1 meeting is along with main shaft 12 rotates together, but mandrel seat 5 is motionless in mandrel 1 rotation process.
One connects pore 52 in mandrel seat 5, connects pore 52 and joins with air pump.The gases at high pressure that air pump the produces inner chamber through connecing pore 52, passage 4, trombone slide 11 successively flow to chuck 10, spray the gap between chuck 10 and main shaft 12 at last.In actual product, can be when chuck 10 unclamps the air pump air feed, and add man-hour at chuck 10 clamping work pieces with to workpiece, air pump stops air feed, to reduce the working time of air pump, plays energy-conservation effect.
When this device uses, at first the hydraulic oil of fluid pressure line successively through oil receiving hole 2, annular groove 51, through hole 3, enter in the cavity in hydraulic cylinder 7 inner carriers 8 left sides, piston 8 is slided by hydraulic action to the right, chuck 10 is also moved right and opens.At this moment, can unload or load onto workpiece.Simultaneously, the air-flow ejection is arranged in the gap between chuck 10 and main shaft 12, tiny metal dust or sheet metal are gone out chuck.Then, change the oil-feed direction of fluid pressure line, make piston 8 slided to the left by hydraulic action, chuck 10 is subjected to the extruding of main shaft 12 and tightens up, and clamps workpiece.At last, the motor of starting lathe drives main shaft 12 and rotates, and workpiece is carried out process operation.
Claims (5)
1, a kind of hydraulic clamp of lathe, the headstock (9) that is arranged at lathe is located, comprise main shaft (12), chuck (10) and trombone slide (11), chuck (10) and trombone slide (11) are fixed together, be loaded in the main shaft (12), trombone slide (11) is in the end of main shaft (12), it is characterized in that, the other end of described main shaft (12) is equipped with a hydraulic cylinder (7), piston (8) is arranged in the hydraulic cylinder (7), piston (8) is connected with trombone slide (11), a mandrel (1) passes piston (8), two through holes (3) are arranged in mandrel (1) vertically, and the inner orifice of these two through holes (3) communicates with hydraulic cylinder (7) cavity of piston (8) both sides respectively, and the outer aperture of through hole (3) is connected on the fluid pressure line.
2, the hydraulic clamp of lathe according to claim 1, it is characterized in that, there is a mandrel seat (5) outer end of described mandrel (1), the outer end of mandrel (1) is loaded in the mandrel seat (5), the medial surface of mandrel seat (5) has bipassage ring connected in star (51), annular groove (51) is in the position corresponding to the outer aperture of two through holes (3) in the mandrel (1), and an oil receiving hole (2) that leads to mandrel seat (5) outside is all arranged in each annular groove (51).
3, the hydraulic clamp of lathe according to claim 2 is characterized in that, described mandrel (1) middle part has the retaining edge (6) of protruding laterally, and retaining being connected by screw and hydraulic cylinder (7) along (6).
According to the hydraulic clamp of claim 1,2 or 3 described lathes, it is characterized in that 4, described trombone slide (11) is joining by screw thread with chuck (10).
5, according to the hydraulic clamp of claim 1,2 or 3 described lathes, it is characterized in that, a passage (4) is arranged in the described mandrel (1) vertically, in mandrel seat (5), have one lead to mandrel seat (5) outside connect pore (52), connect pore (52) and communicate with passage (4), the inner orifice of passage (4) communicates with the inner chamber of trombone slide (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100734904A CN100420529C (en) | 2004-12-18 | 2004-12-18 | Hydraulic clamping apparatus for machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100734904A CN100420529C (en) | 2004-12-18 | 2004-12-18 | Hydraulic clamping apparatus for machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1631591A true CN1631591A (en) | 2005-06-29 |
| CN100420529C CN100420529C (en) | 2008-09-24 |
Family
ID=34846852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100734904A Active CN100420529C (en) | 2004-12-18 | 2004-12-18 | Hydraulic clamping apparatus for machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100420529C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057412A (en) * | 2014-07-03 | 2014-09-24 | 昆山允可精密工业技术有限公司 | Rotating shaft for clamping tube products or bar stocks |
| CN107262839A (en) * | 2017-08-04 | 2017-10-20 | 浙江日创机电科技有限公司 | A kind of high precision hobbing floating clamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4309988B2 (en) * | 1999-03-09 | 2009-08-05 | 本田技研工業株式会社 | Machine tool headstock and shaft workpiece work method |
| CN2483125Y (en) * | 2001-07-20 | 2002-03-27 | 玉环县杭升机床有限公司 | Clamping apparatus for instrument lathe |
| CN2520969Y (en) * | 2001-08-26 | 2002-11-20 | 李耀群 | Hydraulic automatic gripping device for instrument lathe |
| CN2748203Y (en) * | 2004-12-18 | 2005-12-28 | 高长泉 | Hydraulic clamp of lathe |
-
2004
- 2004-12-18 CN CNB2004100734904A patent/CN100420529C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057412A (en) * | 2014-07-03 | 2014-09-24 | 昆山允可精密工业技术有限公司 | Rotating shaft for clamping tube products or bar stocks |
| CN107262839A (en) * | 2017-08-04 | 2017-10-20 | 浙江日创机电科技有限公司 | A kind of high precision hobbing floating clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100420529C (en) | 2008-09-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20090227 Address after: Zhejiang province Yuhuan County Zhugang Chen Yu Bei Shan Tou Zhejiang Haideman Machine Tool Manufacturing Co. Ltd. Patentee after: Zhejiang Headman Machinery Co., Ltd. Address before: Zhejiang province Yuhuan County Pearl River town barley island Development Zone Pu Qing section Yuhuan County Huafeng machine tool factory Patentee before: Gao Changquan |
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| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG PROVINCE HEIDEMANN MACHINE MANUFACTURING Free format text: FORMER OWNER: GAO ZHANGQUAN Effective date: 20090227 |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317604 Zhejiang province Yuhuan County Zhugang Chen Yu Bei Shan Tou Zhejiang Haideman Machine Tool Manufacturing Co. Ltd. Patentee after: Zhejiang Haideman intelligent equipment Limited by Share Ltd Address before: 317604 Zhejiang province Yuhuan County Zhugang Chen Yu Bei Shan Tou Zhejiang Haideman Machine Tool Manufacturing Co. Ltd. Patentee before: Zhejiang Headman Machinery Co., Ltd. |