CN102632265A - Hydraulic rapid automatic centering chuck - Google Patents
Hydraulic rapid automatic centering chuck Download PDFInfo
- Publication number
- CN102632265A CN102632265A CN2012101297995A CN201210129799A CN102632265A CN 102632265 A CN102632265 A CN 102632265A CN 2012101297995 A CN2012101297995 A CN 2012101297995A CN 201210129799 A CN201210129799 A CN 201210129799A CN 102632265 A CN102632265 A CN 102632265A
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- Prior art keywords
- hydraulic
- connector
- ball
- bull
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 9
- 244000309464 bull Species 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 14
- 210000000078 claw Anatomy 0.000 claims description 8
- 241000237858 Gastropoda Species 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 230000009183 running Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic rapid automatic centering chuck which is suitable for processing machines such as machine tools and the like. The chuck comprises a clamping jaw assembly, a chuck body, a connector and a ball-screw hydraulic drive mechanism, wherein the clamping jaw assembly is provided with three or four jaws, the connector and the ball-screw hydraulic drive mechanism are arranged in the chuck body, the ball-screw hydraulic drive mechanism comprises a multi-head ball-screw assembly, a hydraulic oil cylinder and a hydraulic converter, the multi-head ball-screw assembly is composed of a multi-head lead screw and a ball nut, the hydraulic converter is connected with a hydraulic system, the multi-head all-screw assembly and the hydraulic oil cylinder are arranged in a spindle hole of a machine tool, and the hydraulic converter is communicated with the hydraulic oil cylinder. Hydraulic oil flows into the hydraulic oil cylinder through the hydraulic converter, so that a cylinder body of the hydraulic oil cylinder makes a forward-and-backward motion, and then pushes the ball nut to make a forward-and-backward motion and drives the multi-head lead screw to make a forward or backward rotating motion, the multi-head lead screw after extending to the inside of the chuck body is connected with the connector so as to drive the connector to operate, and the connector drives the clamping jaws to move radially to and fro through an Archimedes planar spiral disc.
Description
Technical field
The present invention relates to a kind of hydraulic pressure self-centering chuck, be applicable to processing equipments such as lathe.
Background technology
The chuck that uses on the existing lathe mostly is collet; The jaw stroke is very little; A kind of jaw can only adapt to a kind of part of specification, and in process, because all bringing onto load work of hydraulic pressure (or pneumatic) transmission mechanism; Hydraulic pressure (or pneumatic) element easy abrasion and produce leakage, service life is short.The electric cartridge that adopts the Archimedian screw dish is also arranged, and this chuck has mechanical transmission mechanisms such as decelerator and clutch, complex structure, and stationary performance is relatively poor.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of hydraulic pressure fast automatic centering chuck, this chuck can realize that self-centering and jaw adjustable range are big, long service life.
The technical scheme that the present invention adopted is: the fast automatic centering chuck of a kind of hydraulic pressure; Comprise clip claw assembly, collet body, place connector and ball screw hydraulic gear in the collet body with three-jaw or four paws; Said ball screw hydraulic gear comprises bull ball screw assembly, hydraulic jack of being made up of bull screw mandrel and ball nut and the liquid pressure transducer that is connected with hydraulic system; Said bull ball screw assembly and hydraulic jack place in the machine tool chief axis hole; Liquid pressure transducer is communicated with hydraulic jack; Hydraulic oil flows into hydraulic jack through liquid pressure transducer seesaws cylinder body, and then the ball nut that promotes bull ball screw assembly seesaws and drive the bull screw mandrel and just changeing perhaps return motion, and said bull screw mandrel stretches into collet body and is connected with connector; The running of drive connector, connector radially moves around through the moving jaw of Archimedes's snail dribbling.
The further technical scheme of the present invention is: said liquid pressure transducer is provided with the overcoat of being made by polyimides and disposes wear-resisting withstand voltage FS sealing and rotation square ring.
Compare with prior art, the present invention has following beneficial effect: 1, adopt hydraulic gear to promote the loosening work of folder of ball screw assembly and then rotary connector realization jaw, operate steadily.2, adopt the moving bull jaw of Archimedes's snail dribbling radially to move around; Can realize self-centering and have good self-locking property; And after clamping the work of (or unclamping) jaw, hydraulic system is in unloading condition during processing work, makes all driving members all be in the no-load condition running; Driving member can not wear and tear, thereby effectively improves the service life of parts.3, adopt three to grab the perhaps chuck component of four paws, it is big to launch (or dwindling) scope, but the workpiece of clamping different size, and the flexible scope of jaw can reach more than the 30mm.4, adopt bull ball screw assembly, volume is little, and moment of torsion is big, can satisfy different coupling mechanism forces and the different requirement of opening pawl, closing the pawl distance.5, liquid pressure transducer is provided with the overcoat of being made by polyimides; Have not having oil or unloading the characteristics of self-lubricating in the oil condition, dispose wear-resisting withstand voltage FS sealing and rotation square ring, can improve rotational line speed and effect withstand voltage, heatproof; And then the service life of improving liquid pressure transducer; The withstand voltage 20KMPa that reaches, linear velocity can reach 2m/s, heatproof-45 °-250 °.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described further.
Description of drawings
Fig. 1 is the structure diagram of an embodiment of the present invention.
The specific embodiment
Embodiment as shown in Figure 1; The fast automatic centering chuck of this embodiment hydraulic pressure; Comprise clip claw assembly 1, collet body 3, place connector 2 and ball screw hydraulic gear in the collet body 3, during use, collet body 3 is installed on the ring flange of machine tool chief axis 7 with three-jaw or four paws.The ball screw hydraulic gear comprises bull ball screw assembly 4, hydraulic jack of being made up of bull screw mandrel 4.1 and ball nut 4.2 5 and the liquid pressure transducer 6 that is connected with hydraulic system.Liquid pressure transducer 6 is provided with the overcoat of being made by polyimides and disposes wear-resisting withstand voltage FS sealing and rotation square ring, can the market bulk/volume buying.Bull ball screw assembly 4 and hydraulic jack 5 place in the machine tool chief axis hole 7.1; Liquid pressure transducer 6 is communicated with hydraulic jack 5; Hydraulic oil flows into hydraulic jacks 5 through liquid pressure transducer 6 seesaws cylinder body, and then the ball nut 4.2 that promotes bull ball screw assembly 4 seesaws and drives bull screw mandrel 4.1 and just changeing perhaps return motion.Present embodiment connector 2 adopts flat key claw type connector, can certainly adopt other functionally similar connector.The bull screw mandrel 4.1 of bull ball screw assembly 4 stretches into collet body 3 and is connected with 2 insertions of flat key claw type connector through flat key (accompanying drawing does not indicate), drives 2 runnings of flat key claw type connector.Flat key claw type connector 2 is connected with Archimedes's snail dish 8 through end face flat key (accompanying drawing does not indicate), and radially moves around through Archimedes's snail dish 8 drive jaws 1.
Whole process has only chuck to clamp and unclamps jaw when action, and hydraulic system gets into workpiece and adds man-hour in work, and hydraulic system is in unloading condition.
Claims (3)
1. fast automatic centering chuck of hydraulic pressure; Comprise clip claw assembly (1), collet body (3), place connector (2) and ball screw hydraulic gear in the collet body (3) with three-jaw or four paws; Said ball screw hydraulic gear comprises bull ball screw assembly (4), hydraulic jack of being made up of bull screw mandrel (4.1) and ball nut (4.2) (5) and the liquid pressure transducer (6) that is connected with hydraulic system; Said bull ball screw assembly (4) and hydraulic jack (5) place in the machine tool chief axis hole (7.1); Liquid pressure transducer (6) is communicated with hydraulic jack (5); Hydraulic oil flows into hydraulic jack (5) through liquid pressure transducer (6) seesaws cylinder body; And then the ball nut (4.2) that promotes bull ball screw assembly (4) seesaws and drives bull screw mandrel (4.1) and just changeing perhaps return motion; Said bull screw mandrel (4.1) stretches into collet body (3) and is connected with connector (2), drives connector (2) running, and connector (2) drives jaw (1) through Archimedes's snail dish (8) and radially moves around.
2. the fast automatic centering chuck of hydraulic pressure according to claim 1 is characterized in that: said liquid pressure transducer (6) is provided with the overcoat of being made by polyimides and disposes wear-resisting withstand voltage FS sealing and rotation square ring.
3. the fast automatic centering chuck of hydraulic pressure according to claim 1 and 2 is characterized in that: said connector (2) adopts flat key claw type connector, is connected with Archimedes's snail dish (8) through the end face flat key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210129799 CN102632265B (en) | 2012-04-28 | 2012-04-28 | Hydraulic rapid automatic centering chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210129799 CN102632265B (en) | 2012-04-28 | 2012-04-28 | Hydraulic rapid automatic centering chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102632265A true CN102632265A (en) | 2012-08-15 |
| CN102632265B CN102632265B (en) | 2013-12-18 |
Family
ID=46616946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210129799 Active CN102632265B (en) | 2012-04-28 | 2012-04-28 | Hydraulic rapid automatic centering chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102632265B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406556A (en) * | 2013-08-25 | 2013-11-27 | 赵苏峰 | Adjustable post-tensioning outward-stretching two-claw or three-claw clamp |
| CN105437244A (en) * | 2015-12-25 | 2016-03-30 | 常熟市华德粉末冶金有限公司 | Automatic inner hole shaping device for oil-containing bearing |
| CN105499606A (en) * | 2015-12-30 | 2016-04-20 | 山西顾德宝丰重工机械有限公司 | Numerical control machining mechanism and method of support roller shaft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041228U (en) * | 1988-11-21 | 1989-07-19 | 北方工业大学 | Electric chuck |
| CN1718305A (en) * | 2005-07-21 | 2006-01-11 | 华南理工大学 | A gear spinning forming method and device thereof |
| CN202571360U (en) * | 2012-04-28 | 2012-12-05 | 浙江人驰汽车配件有限公司 | Hydraulic quick automatic centering chuck |
-
2012
- 2012-04-28 CN CN 201210129799 patent/CN102632265B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041228U (en) * | 1988-11-21 | 1989-07-19 | 北方工业大学 | Electric chuck |
| CN1718305A (en) * | 2005-07-21 | 2006-01-11 | 华南理工大学 | A gear spinning forming method and device thereof |
| CN202571360U (en) * | 2012-04-28 | 2012-12-05 | 浙江人驰汽车配件有限公司 | Hydraulic quick automatic centering chuck |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406556A (en) * | 2013-08-25 | 2013-11-27 | 赵苏峰 | Adjustable post-tensioning outward-stretching two-claw or three-claw clamp |
| CN103406556B (en) * | 2013-08-25 | 2015-09-09 | 赵苏峰 | Adjustable post-tensioning opens two outward, three-jaw |
| CN105437244A (en) * | 2015-12-25 | 2016-03-30 | 常熟市华德粉末冶金有限公司 | Automatic inner hole shaping device for oil-containing bearing |
| CN105499606A (en) * | 2015-12-30 | 2016-04-20 | 山西顾德宝丰重工机械有限公司 | Numerical control machining mechanism and method of support roller shaft |
| CN105499606B (en) * | 2015-12-30 | 2017-12-29 | 山西顾德宝丰重工机械有限公司 | A kind of carrying roller axes numerical control machine structure and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102632265B (en) | 2013-12-18 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |