CN103894641A - Outer-ejection-type inner expansion clamping sleeve - Google Patents
Outer-ejection-type inner expansion clamping sleeve Download PDFInfo
- Publication number
- CN103894641A CN103894641A CN201410152331.7A CN201410152331A CN103894641A CN 103894641 A CN103894641 A CN 103894641A CN 201410152331 A CN201410152331 A CN 201410152331A CN 103894641 A CN103894641 A CN 103894641A
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- China
- Prior art keywords
- sleeve
- inner expansion
- cone
- ejection
- expanding sleeve
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- Pending
Links
- 238000010030 laminating Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
Images
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
- B23B31/40—Expansion mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses an outer-ejection-type inner expansion clamping sleeve. The outer-ejection-type inner expansion clamping sleeve comprises a top sharp shaft and an inner expansion sleeve. The top sharp shaft comprises an outer cone, a shaft body and a handle part. The inner expansion sleeve is composed of an inner cone and a sleeve body. A fitting end face corresponding to a workpiece is arranged on the outer end face of the sleeve body of the inner expansion sleeve. The inner expansion sleeve is an elastic body. The inner cone of the inner expansion sleeve is connected with the outer cone of the top sharp shaft in a sliding fit mode, and the inner wall of the sleeve body of the inner expansion sleeve is connected with the shaft body of the top sharp shaft in a matched mode. By means of the outer-ejection-type inner expansion clamping sleeve, because the workpiece is expanded from the inner side through the inner expansion sleeve, the ovality generated during rebounding can be effectively reduced; clamping is carried out completely through ejection force of a machine tool tail seat without external clamping force. In this way, the outer-ejection-type inner expansion clamping sleeve successfully solves the problem that elastic inner expansion type clamping needs to be adopted in a tail seat end.
Description
Technical field
The invention belongs to plant equipment field, relate to the outer top formula internal expanding chuck that a kind of tail stock uses.
Background technology
Lathe is very extensive in the use of manufacturing, and what in turning, generally face is not that axial workpiece is exactly pipe part.In the time of processing pipe part, conventional clamping is that two ends top top endoporus or spindle end press from both sides excircle of workpiece, top top inner hole of workpiece for tailstock end, be originally to adopt top endoporus mode at tailstock end group, the difficult point of which turning is to be easily out of shape in the time of processing light wall pipe class workpiece: on lathe, measuring workpieces is normal, but in the time that workpiece is measured after fixture takes out again, the ellipse that often has 0.04MM to 0.1MM not wait.The former of its generation produces irregular deformation by workpiece because toply contact inhomogeneously with inner hole of workpiece while holding out against, and process and take off rear workpiece resilience, thus existence ellipse.
General lathe main shaft end, as needs can design and produce internal expansion type spring chuck etc., is fixed on chuck to rotate with workpiece; But tailstock end is driven end, there is no to be used for fixing the space of spring chuck, thus generally can only be with top top endoporus at tailstock end, therefore, prior art need to improve.
Summary of the invention
The object of this invention is to provide a kind of outer top formula internal expanding chuck for tail stock, effectively reduce the ovality after the turning of tubing workpiece, guarantee its crudy.
Technical scheme of the present invention: a kind of outer top formula internal expanding chuck, it comprises tail spindle and inner expanding sleeve, described tail spindle is divided into outer cone, axle body and shank, inner expanding sleeve is divided into inner cone and cover body, inner expanding sleeve cover body outer face is provided with the laminating end face corresponding with workpiece, inner expanding sleeve is elastomer, and the inner cone of inner expanding sleeve coordinates and is slidably connected with the outer cone of tail spindle, and the cover body inwall of inner expanding sleeve and the axle body of tail spindle are connected.
The outer cone front end face of described tail spindle is connected with block, and described block outside diameter is greater than the inner cone portlet diameter of inner expanding sleeve.
The laminating end face of described inner expanding sleeve cover body is provided with shoulder, the spacing connection of laminating end face of shoulder and workpiece.
The handle designs of described tail spindle is the Outer Taper being connected with the internal taper hole of alternate form rolling center.
The outer wall of the inner cone of described inner expanding sleeve and cover body connecting portion is provided with transition groove, and inwall is provided with transition shoulder.
The present invention adopts inner expanding sleeve from inside workpiece tensioner workpiece, because chuck is the distortion of rising outward of whole even circumferential, thereby is also whole circumferencial direction homogeneous deformation while guaranteeing workpiece contact, so the ovality effectively producing when decreasing rebound.Clamping of the present invention, utilizes tailstock tool pressure completely, does not need especially to apply chucking power.Therefore, this outer top formula internal expanding chuck has successfully solved a difficult problem for tailstock end employing internal expansion type elastic clamping.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the main TV structure schematic diagram of inner expanding sleeve that the present invention executes example 1.
Fig. 3 is the inner expanding sleeve side-looking structural representation that the present invention executes example 1.
The specific embodiment
The present invention can specifically implement according to the technology in technical scheme, further illustrates embodiment with following non-limiting embodiment.
Embodiment 1:
Take the SUV of Jiangling group automobile N350 front axle housing as example, for the cylindrical of this propons sleeve pipe of turning is to diameter 63+0.12+0.06mm, guarantee this joint cylindrical length 72 ± 0.3mm, cylindrical Ra3.2mm etc., the tailstock centre using in processing be this outer top formula internal expanding chuck and alternate form rolling center group all-in-one-piece top, the Digit Control Machine Tool using is CAK6150D.
Outer top formula internal expanding chuck comprises tail spindle 1, inner expanding sleeve 2 and block 3 and fastening bolt 4.Described tail spindle 1 is divided into outer cone, axle body and shank, inner expanding sleeve 2 is divided into inner cone and cover body, inner expanding sleeve 2 overlaps body outer face and is provided with the laminating end face corresponding with workpiece 5, inner expanding sleeve 2 is elastomer, the inner cone of inner expanding sleeve 2 coordinates and is slidably connected with the outer cone of tail spindle 1, and the cover body inwall of inner expanding sleeve 2 and the axle body of tail spindle 1 are connected.
The outer cone front end face of described tail spindle 1 is connected with block 3, and block 3 is connected with the outer cone front end face of tail spindle 1 by fastening bolt 4, and described block 3 outside diameters are greater than the inner cone portlet diameter of inner expanding sleeve 2.
The laminating end face that described inner expanding sleeve 2 overlaps body is provided with shoulder, the spacing connection of laminating end face of shoulder and workpiece 5.
The handle designs of described tail spindle 1 is the Outer Taper being connected with the internal taper hole of alternate form rolling center.To insert in the internal taper hole of alternate form rolling center, thereby form one with alternate form rolling center.
The outer wall of the inner cone of described inner expanding sleeve 2 and cover body connecting portion is provided with transition groove, and inwall is provided with transition shoulder.
After described outer top formula internal expanding chuck and alternate form rolling center composition one, be connected by alternate form rolling center shank and tailstock tool.In the time that tailstock tool screws sinciput, workpiece 5 is pressed to machine tool chief axis end by the shoulder of inner expanding sleeve 2, in the time that spindle end cannot move forward again, the just relative inner expanding sleeve 2 of tail spindle 1 moves ahead, the inner cone relative sliding of the outer cone of tail spindle 1 and inner expanding sleeve 2, force inner expanding sleeve 2 to produce the outer distortion of rising along its male cone (strobilus masculinus), thus tensioner workpiece 5 inwalls, the clamping of realization to workpiece 5.
Respectively being of a size of of the outer top formula internal expanding chuck of the present embodiment: the outer outside diameter of inner expanding sleeve 2 is 52.4 ± 0.05 mm, and roughness is Ra0.8, and height of shoulder is 2.5mm, and interior coning angle is 30o ± 0.1o, and roughness is Ra0.8; Even circumferential is opened 8 grooves, every groove width 3 mm; Tail spindle 1 head tapering is 30o ± 0.1o, and large footpath, tapering is 42-0.2-0.4 mm, connects flat with cylindrical; Related unit is general marker method.
The present embodiment adopts inner expanding sleeve from inside workpiece tensioner workpiece, because chuck is the distortion of rising outward of whole even circumferential, thereby while guaranteeing workpiece contact, be also that whole circumferencial direction distortion is even, after processing, the ovality of excircle of workpiece size 63+0.12+0.06 mm is down to 0.01 mm to 0.02 mm by 0.08 mm to 0.12 mm left and right before it.
Claims (5)
1. an outer top formula internal expanding chuck, it comprises tail spindle (1) and inner expanding sleeve (2), it is characterized in that: described tail spindle (1) is divided into outer cone, axle body and shank, inner expanding sleeve (2) is divided into inner cone and cover body, inner expanding sleeve (2) cover body outer face is provided with the laminating end face corresponding with workpiece (5), inner expanding sleeve (2) is elastomer, and the inner cone of inner expanding sleeve (2) coordinates and is slidably connected with the outer cone of tail spindle (1), and the axle body of the cover body inwall of inner expanding sleeve (2) and tail spindle (1) is connected.
2. the outer top of one according to claim 1 formula internal expanding chuck, is characterized in that: the outer cone front end face of described tail spindle (1) is connected with block (3), and described block (3) outside diameter is greater than the inner cone portlet diameter of inner expanding sleeve (2).
3. the outer top of one according to claim 1 and 2 formula internal expanding chuck, is characterized in that: the handle designs of described tail spindle (1) is the Outer Taper being connected with the internal taper hole of alternate form rolling center.
4. the outer top of one according to claim 1 and 2 formula internal expanding chuck, is characterized in that: the shank of described tail spindle (1) is Outer Taper, and the internal taper hole of Outer Taper and alternate form rolling center is connected.
5. the outer top of one according to claim 1 and 2 formula internal expanding chuck, is characterized in that: the outer wall of the inner cone of described inner expanding sleeve (2) and cover body connecting portion is provided with transition groove, and inwall is provided with transition shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152331.7A CN103894641A (en) | 2014-04-16 | 2014-04-16 | Outer-ejection-type inner expansion clamping sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152331.7A CN103894641A (en) | 2014-04-16 | 2014-04-16 | Outer-ejection-type inner expansion clamping sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103894641A true CN103894641A (en) | 2014-07-02 |
Family
ID=50986389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410152331.7A Pending CN103894641A (en) | 2014-04-16 | 2014-04-16 | Outer-ejection-type inner expansion clamping sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103894641A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364094A (en) * | 2015-11-24 | 2016-03-02 | 江苏华海钢结构有限公司 | Live center used for machining shaft-type workpiece |
| CN106392174A (en) * | 2016-12-14 | 2017-02-15 | 菏泽锅炉厂有限公司 | Smoke tube flushing machine for gas-fired boiler |
| CN106624133A (en) * | 2016-11-30 | 2017-05-10 | 江苏汤臣汽车零部件有限公司 | Locking tool for processing impeller of hydrodynamic retarder of heavily loaded truck |
| CN106736315A (en) * | 2016-11-30 | 2017-05-31 | 江苏汤臣汽车零部件有限公司 | A kind of truck Retarder Impeller Machining method |
| CN107626941A (en) * | 2017-11-10 | 2018-01-26 | 中国石油天然气集团公司 | A kind of inner supporting device of tubing external screw thread processing |
| CN109604657A (en) * | 2019-01-11 | 2019-04-12 | 亚普汽车部件股份有限公司 | Hollow body fixture |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU499982A1 (en) * | 1973-06-22 | 1976-01-25 | Centering spindle | |
| CN201150999Y (en) * | 2007-11-13 | 2008-11-19 | 上海宝钢设备检修有限公司 | Moveable sheath positioning apparatus for processing hole of roller |
| CN201684930U (en) * | 2010-05-25 | 2010-12-29 | 上海东方泵业(集团)有限公司 | Automatic expansion center device |
| CN102814519A (en) * | 2012-05-03 | 2012-12-12 | 沈阳富创精密设备有限公司 | Internal expansion tool for mechanical processing |
| CN202741777U (en) * | 2012-09-17 | 2013-02-20 | 江苏飞船股份有限公司 | Double-headed core expansion type spindle clamp |
| CN103071824A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Expansion core tool |
| CN103143745A (en) * | 2013-04-01 | 2013-06-12 | 重庆永达精密机械有限公司 | Lathe clamp for clamping synchronizer gear |
| CN203887253U (en) * | 2014-04-16 | 2014-10-22 | 江西江铃底盘股份有限公司 | Outwards-pressing-type inner expansion clamp cover |
-
2014
- 2014-04-16 CN CN201410152331.7A patent/CN103894641A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU499982A1 (en) * | 1973-06-22 | 1976-01-25 | Centering spindle | |
| CN201150999Y (en) * | 2007-11-13 | 2008-11-19 | 上海宝钢设备检修有限公司 | Moveable sheath positioning apparatus for processing hole of roller |
| CN201684930U (en) * | 2010-05-25 | 2010-12-29 | 上海东方泵业(集团)有限公司 | Automatic expansion center device |
| CN102814519A (en) * | 2012-05-03 | 2012-12-12 | 沈阳富创精密设备有限公司 | Internal expansion tool for mechanical processing |
| CN202741777U (en) * | 2012-09-17 | 2013-02-20 | 江苏飞船股份有限公司 | Double-headed core expansion type spindle clamp |
| CN103071824A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Expansion core tool |
| CN103143745A (en) * | 2013-04-01 | 2013-06-12 | 重庆永达精密机械有限公司 | Lathe clamp for clamping synchronizer gear |
| CN203887253U (en) * | 2014-04-16 | 2014-10-22 | 江西江铃底盘股份有限公司 | Outwards-pressing-type inner expansion clamp cover |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364094A (en) * | 2015-11-24 | 2016-03-02 | 江苏华海钢结构有限公司 | Live center used for machining shaft-type workpiece |
| CN106624133A (en) * | 2016-11-30 | 2017-05-10 | 江苏汤臣汽车零部件有限公司 | Locking tool for processing impeller of hydrodynamic retarder of heavily loaded truck |
| CN106736315A (en) * | 2016-11-30 | 2017-05-31 | 江苏汤臣汽车零部件有限公司 | A kind of truck Retarder Impeller Machining method |
| CN106392174A (en) * | 2016-12-14 | 2017-02-15 | 菏泽锅炉厂有限公司 | Smoke tube flushing machine for gas-fired boiler |
| CN106392174B (en) * | 2016-12-14 | 2018-06-22 | 菏泽锅炉厂有限公司 | For the smoke pipe Shearing machine for mouth of steel cylinder of gas fired-boiler |
| CN107626941A (en) * | 2017-11-10 | 2018-01-26 | 中国石油天然气集团公司 | A kind of inner supporting device of tubing external screw thread processing |
| CN109604657A (en) * | 2019-01-11 | 2019-04-12 | 亚普汽车部件股份有限公司 | Hollow body fixture |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140702 |