CN104439349A - Eccentric chuck with self-adjusting eccentricity - Google Patents
Eccentric chuck with self-adjusting eccentricity Download PDFInfo
- Publication number
- CN104439349A CN104439349A CN201410722011.0A CN201410722011A CN104439349A CN 104439349 A CN104439349 A CN 104439349A CN 201410722011 A CN201410722011 A CN 201410722011A CN 104439349 A CN104439349 A CN 104439349A
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- CN
- China
- Prior art keywords
- chuck
- eccentric
- platen
- disk body
- eccentric disk
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention relates to a lathe accessory, in particular to an eccentric chuck with self-adjusting eccentricity. The eccentric chuck comprises a chuck, a spring clamping head mounted in the chuck and a pull rod, and is characterized in that the chuck comprises a chuck body and a packing fixedly mounted at one end of the chuck body and matched with a lathe main shaft; an eccentric disc body is rotationally mounted at the other end of the chuck body; a taper hole, matched with the spring clamping head, is formed in the eccentric disc body; certain eccentricity is arranged between the taper hole and the rotation center of the eccentric disc body; the pull rod is connected with the spring clamping head through a pull sleeve; a pressing plate is mounted between the packing and the eccentric disc body in the chuck body, and is connected with the chuck body through a key; a friction disc is fixed on one side, opposite to the pressing plate, of the eccentric disc body; a pressing spring is mounted between the pressing plate and the packing; through holes communicated with and perpendicular to the end surface of the eccentric disc body are formed in the eccentric disc body and the friction disc. The eccentricity chuck has the characteristics that the eccentric chuck is reasonable in structure, simple to use, and convenient in eccentricity adjustment.
Description
Technical field
The present invention relates to a kind of lathe accessories, particularly the self-adjustable eccentric chuck of a kind of offset.
Background technology
Usually the method adopted at present for the processing of axle class eccentric element has: 1, adopt chuck artificial aligning, and shortcoming is clamping workpiece adjustment difficulty, and working (machining) efficiency is low, precision is also difficult to ensure, is suitable for single and mini-batch production, part processing that precision is lower; 2, realized by auxiliary eccentric frock clamp, but the method is for the part of different eccentric throw, need manufacture and design different Special tooling clamps, namely a kind of eccentric throw correspondence will do a set of frock clamp, cause frock clamp of a great variety, production efficiency is low, manufacturing cost is high.Such Special tooling clamp is generally adopt collet to carry out Automatic-clamping to workpiece to be machined, by being arranged on clamping cylinder or the oil cylinder of tail end of main shaft of machine tool, drive pull bar and the collet be connected with pull bar move axially along main shaft, realize the clamping to workpiece to be machined, unclamp.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of clamped one time is provided, and the self-adjustable eccentric chuck of offset within the specific limits.
For achieving the above object, technical scheme of the present invention is: the self-adjustable eccentric chuck of a kind of offset, comprise chuck, be arranged on collet in chuck and pull bar, it is characterized in that above-mentioned chuck is made up of chuck body and the packing matched with machine tool chief axis that is fixedly mounted on chuck body one end, rotatable in the other end of chuck body eccentric disk body is installed, eccentric disk body has the taper hole matched with collet, the pivot of this taper hole and eccentric disk body has certain offset, and pull bar to be connected with collet by helping pull a cart;
Packing in chuck body and be provided with platen between eccentric disk body, be connected by key between platen with chuck body, the opposite face of eccentric disk body and platen is fixed with frictional disk, between platen and packing, stage clip is installed, eccentric disk body with frictional disk have the through hole perpendicular to eccentric disk body end face be communicated with.
Terminal pad is installed with between above-mentioned chuck body and packing, terminal pad in chuck body and be provided with platen between eccentric disk body, be connected by key between platen with chuck body, the opposite face of eccentric disk body and platen is fixed with frictional disk, between platen and terminal pad, stage clip is installed, eccentric disk body with frictional disk have the through hole perpendicular to eccentric disk body end face be communicated with.
Above-mentioned stage clip is butterfly spring.
Technical scheme of the present invention has following characteristics: 1, by carrying out the improvement of Automatic-clamping chuck to current employing collet, devise the eccentric disk body with certain offset, by the rotation of eccentric disk body relative to chuck body, just can regulate the offset of workpiece to be machined easily within the specific limits, when offset as the taper hole that matches with collet in the eccentric disk body of design and eccentric disk body pivot is 12mm, this eccentric chuck just can process cylindrical or the endoporus of the eccentric part of offset between 0-12mm; 2, compact conformation, rationally.By external gases at high pressure or pressure oil, just platen and frictional disk can be thrown off, rotation machine tool chief axis or eccentric chuck just conveniently can adjust offset; 3, effectively production cost can be reduced.Use because the technical program chuck both can be used as common chuck, can be used as again eccentric chuck and use, and offset can adjust within the specific limits, effectively can reduce the change due to part to be processed offset, cost needed for the chuck that need configure different offset; 4, use simple, easy to adjust.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1, chuck is made up of the packing 1 matched with machine tool chief axis being fixedly mounted on chuck body 5 left end, the terminal pad 2 that is connected packing and chuck body, rotatable in the right-hand member of chuck body eccentric disk body 6 is installed, eccentric disk body has the taper hole matched with collet 8, the pivot of this taper hole and eccentric disk body has certain offset, and pull bar 14 7 to be connected with collet by helping pull a cart; Terminal pad in chuck body and be provided with platen 3 between eccentric disk body, be connected by key 12 between platen with chuck body, the opposite face of eccentric disk body and platen is fixed with frictional disk 4, stage clip 11 is installed between platen and packing, stage clip can adopt butterfly spring, and eccentric disk body with frictional disk have the through hole 10 perpendicular to eccentric disk body end face be communicated with.
During use, complete the Excircle machining at workpiece to be machined 13 axle center circle and off-centre operation place according to the following steps:
1st step: the connector 9 of external high pressure flue is connected with the through hole on eccentric disk body, gases at high pressure to be faced left end face by the through hole engaging friction on eccentric disk body and frictional disk, promote platen to be moved to the left, now, butterfly spring is compressed, the faying face of platen and frictional disk unclamps, rotate machine tool chief axis, now packing, terminal pad rotates with main shaft simultaneously, chuck body is driven also together to rotate, platen is connected with chuck body by key, then it is with chuck body one piece rotation, because eccentric disk body is fixed by lathe, then chuck body and eccentric disk body produce relative rotation, by controlling Spindle rotation angle degree, machine tool chief axis and collet is made to be on same axle center, now, remove external gas circuit, and by the fixing releasing of eccentric disk body and lathe, under the elastic force effect of butterfly spring, platen moves right and to fit with frictional disk, due to the effect of frictional force, the revolving force of machine tool chief axis passes through packing, terminal pad, chuck body, key, drive platen rotates, under the effect of platen and frictional disk composition surface frictional force, drive eccentric disk body, collet and workpiece to be machined rotate,
2nd step: workpiece is loaded onto chuck, control chuck hydraulic oil cylinder driving pull bar pulls to help pull a cart and is moved to the left, drive collet is moved to the left, and the male cone (strobilus masculinus) of collet coordinates with the inner conical surface of eccentric disk body, the relative chuck of eccentric disk body is without the action moved left and right, and under the effect of the conical surface, workpiece is clamped by collet, now, start lathe main axis, workpiece to be machined axle center circle is processed;
3rd step: after the Excircle machining that work piece axle center is justified completes, main shaft stops operating, according to the aligning method of the 1st step, installation high-voltage gas on through hole, the angle of machine tool chief axis is rotated according to the size of eccentric throw, after eccentric throw between the center of the collet on eccentric disk body and the center of machine tool chief axis is reached eccentric throw that workpiece requires, just can process the cylindrical of work piece off-centre operation.
4th step: after work piece machines, main shaft stops operating, chuck oil cylinder pull bar, to applying power of helping pull a cart, is helped pull a cart and is moved right, and collet unclamps, and is taken off by work piece.
So far, work piece axle center circle completes with the Excircle machining at off-centre operation place, achieves the function that clamped one time completes the processing of work piece off-centre operation place cylindrical.
In the above-described embodiments, the terminal pad 2 be connected with chuck body by packing can be omitted as required, directly packing is connected with chuck body, butterfly spring is directly installed between packing 1 and platen 3.
The process of above-mentioned adjustment eccentric throw also can adopt the mode of rotating eccentricity disk body 6 to realize.
Claims (3)
1. the self-adjustable eccentric chuck of offset, comprise chuck, be arranged on collet in chuck and pull bar, it is characterized in that above-mentioned chuck is made up of chuck body (5) and the packing (1) matched with machine tool chief axis that is fixedly mounted on chuck body one end, rotatable in the other end of chuck body eccentric disk body (6) is installed, eccentric disk body has the taper hole matched with collet (8), the pivot of this taper hole and eccentric disk body has certain offset, and pull bar (15) is connected with collet by help pull a cart (7);
Between packing (1) in chuck body (5) and eccentric disk body (6), platen (3) is installed, be connected by key (14) between platen with chuck body, the opposite face of eccentric disk body and platen is fixed with frictional disk (4), stage clip (13) is installed between platen and packing, eccentric disk body with frictional disk have the through hole (10) perpendicular to eccentric disk body end face be communicated with.
2. the self-adjustable eccentric chuck of offset according to claim 1, it is characterized in that being installed with terminal pad (2) between above-mentioned chuck body (5) and packing (1), terminal pad in chuck body (5) and be provided with platen (3) between eccentric disk body (6), be connected by key (13) between platen with chuck body, the opposite face of eccentric disk body and platen is fixed with frictional disk (4), stage clip (12) is installed between platen and terminal pad, eccentric disk body with frictional disk have the through hole (10) perpendicular to eccentric disk body end face be communicated with.
3. the self-adjustable eccentric chuck of offset according to claim 1 and 2, is characterized in that above-mentioned stage clip (12) is butterfly spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722011.0A CN104439349B (en) | 2014-12-03 | 2014-12-03 | Eccentric chuck with self-adjusting eccentricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722011.0A CN104439349B (en) | 2014-12-03 | 2014-12-03 | Eccentric chuck with self-adjusting eccentricity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104439349A true CN104439349A (en) | 2015-03-25 |
| CN104439349B CN104439349B (en) | 2017-02-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410722011.0A Active CN104439349B (en) | 2014-12-03 | 2014-12-03 | Eccentric chuck with self-adjusting eccentricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104439349B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107668995A (en) * | 2017-10-06 | 2018-02-09 | 中山市东立家具配件有限公司 | A kind of inclination controller of office chair |
| TWI616254B (en) * | 2016-12-20 | 2018-03-01 | Wu ya jue | Powered eccentric chuck |
| CN111922740A (en) * | 2020-07-06 | 2020-11-13 | 河北师范大学 | Lathe fixture of double-eccentric thin-wall sleeve |
| CN115351318A (en) * | 2022-08-29 | 2022-11-18 | 杭州川上机械科技有限公司 | Numerical control lathe positioning tool for turning pump cover and pump cover positioning method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1924321B2 (en) * | 1969-05-13 | 1979-11-08 | David 8752 Mainaschaff Fischer | Chuck for workpieces on machine tools |
| CN1040756A (en) * | 1988-08-29 | 1990-03-28 | 刘士源 | Universal centring chuck |
| CN2803613Y (en) * | 2004-10-29 | 2006-08-09 | 中原工学院 | Offset regulatable clamp |
| CN201645173U (en) * | 2009-11-27 | 2010-11-24 | 中国兵器工业第二○五研究所 | Elastic chuck composite tooling for turning machine |
| CN203330426U (en) * | 2013-02-28 | 2013-12-11 | 江西气体压缩机有限公司 | Adjustable eccentric chuck |
| CN204262389U (en) * | 2014-12-03 | 2015-04-15 | 宁夏长兴精密机械有限公司 | The self-adjustable eccentric chuck of offset |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1177071A1 (en) * | 1984-04-06 | 1985-09-07 | Сумский Филиал Харьковского Ордена Ленина Политехнического Института Им.В.И.Ленина | Collet chuck |
| SU1404191A1 (en) * | 1986-12-30 | 1988-06-23 | Московское Научно-Производственное Объединение По Механизированному Строительному Инструменту И Отделочным Машинам | Clamping chuck |
-
2014
- 2014-12-03 CN CN201410722011.0A patent/CN104439349B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1924321B2 (en) * | 1969-05-13 | 1979-11-08 | David 8752 Mainaschaff Fischer | Chuck for workpieces on machine tools |
| CN1040756A (en) * | 1988-08-29 | 1990-03-28 | 刘士源 | Universal centring chuck |
| CN2803613Y (en) * | 2004-10-29 | 2006-08-09 | 中原工学院 | Offset regulatable clamp |
| CN201645173U (en) * | 2009-11-27 | 2010-11-24 | 中国兵器工业第二○五研究所 | Elastic chuck composite tooling for turning machine |
| CN203330426U (en) * | 2013-02-28 | 2013-12-11 | 江西气体压缩机有限公司 | Adjustable eccentric chuck |
| CN204262389U (en) * | 2014-12-03 | 2015-04-15 | 宁夏长兴精密机械有限公司 | The self-adjustable eccentric chuck of offset |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI616254B (en) * | 2016-12-20 | 2018-03-01 | Wu ya jue | Powered eccentric chuck |
| CN107668995A (en) * | 2017-10-06 | 2018-02-09 | 中山市东立家具配件有限公司 | A kind of inclination controller of office chair |
| CN111922740A (en) * | 2020-07-06 | 2020-11-13 | 河北师范大学 | Lathe fixture of double-eccentric thin-wall sleeve |
| CN115351318A (en) * | 2022-08-29 | 2022-11-18 | 杭州川上机械科技有限公司 | Numerical control lathe positioning tool for turning pump cover and pump cover positioning method |
| CN115351318B (en) * | 2022-08-29 | 2023-07-07 | 杭州川上机械科技有限公司 | Numerical control lathe positioning tool and method for turning pump cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104439349B (en) | 2017-02-01 |
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