CN104440336A - Tensioning clamp of elongated shaft - Google Patents
Tensioning clamp of elongated shaft Download PDFInfo
- Publication number
- CN104440336A CN104440336A CN201410761827.4A CN201410761827A CN104440336A CN 104440336 A CN104440336 A CN 104440336A CN 201410761827 A CN201410761827 A CN 201410761827A CN 104440336 A CN104440336 A CN 104440336A
- Authority
- CN
- China
- Prior art keywords
- axle
- wedge shape
- wall
- diameter
- shape sleeve
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
- B23Q3/14—Mandrels in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention discloses a tensioning clamp of an elongated shaft. The tensioning clamp comprises a clamp body and a tailstock spindle, the clamp body comprises a mandrel, one side of the mandrel is inserted into the tailstock spindle and is in threaded connection with the same, a circular truncated cone groove allowing the elongated shaft to insert is formed in the end on the other side of the mandrel axially, a contracting groove is formed in the wall of the circular truncated cone groove, a fixing sleeve is arranged outside the circular truncated cone groove in a sleeved manner, a wedge-shaped sleeve is arranged between the fixing sleeve and the outer wall of the circular truncated cone groove, the front end of the wedge-shaped sleeve is close to one side, larger in diameter, of the circular truncated cone, the wedge-shaped sleeve is away from one side, smaller in diameter, of the circular truncated cone groove, and the inner wall of the wedge-shaped sleeve is slidably connected with the outer wall of the circular truncated cone groove while the outer wall of the same is in threaded connection with the inner wall of the fixing sleeve. The defect that the surface of a turned workpiece is large in error, poor in smoothness and low in accuracy due to the fact that the middle of the workpiece is bent during existing elongated shaft turning is overcome; by the tensioning clamp, two ends of the workpiece are tensioned, and the surface of the turned workpiece is high in accuracy and smoothness.
Description
Technical field
The invention belongs to truning fixture field, be specifically related to a kind of stretching device of slender axles.
Background technology
Turnery processing is on lathe, utilize workpiece to rotate the method for workpiece being carried out to machining relative to cutter.Turning is suitable for processing rotary surface, and the workpiece that major part has rotary surface can be processed with method for turning, and as inside and outside circle cylinder, the inside and outside circle conical surface, end face, groove, screw thread and rotoforming face etc., cutter for same is lathe tool mainly.And the cutting energy of turnery processing provides primarily of workpiece, instead of provided by cutter.The item that should be noted that in Tutrning Process has: choose reasonable cutting data, choose reasonable cutter, choose reasonable fixture etc.
Fixture is used for fixing processing object in machine-building process, makes it to occupy correct position, to accept the device of constructing or detecting.The workpiece of turning has cylindrical, annular, major axis, minor axis or lining etc., special workpiece is needed to use special fixture, such as: for thin and long shafts, length is the workpiece of 20-30m, common fixture has chuck, usually the two ends of workpiece are sandwiched in, but for slender axles, due to the poor rigidity of workpiece, and fixing two ends, cantilever is longer, there will be bending in the middle part of workpiece, when turning, during turning, workpiece rotates and produces, bending owing to occurring in the middle part of workpiece, when therefore rotating, same axle center cannot be ensured, therefore, surface of the work is easily made to produce error, smoothness is poor, low precision.
Summary of the invention
When the technical problem to be solved in the present invention is for existing thin and long shafts turning, workpiece middle bent, cause the surface of the work error of turning large, smoothness is poor, the shortcoming of low precision, there is provided a kind of tension workpiece two ends, the stretching device of the slender axles that surface of the work precision is high, smoothness is good of turning.
In order to solve the problems of the technologies described above, the invention provides following technical scheme: the stretching device of slender axles, comprise clamp body, tailstock main shaft and inner spacing collar, it is outer and be provided with bearing between inner spacing collar and tailstock main shaft that inner spacing collar is located at by tailstock collar bush, clamp body comprises axle, one end of axle is axially inserted inner spacing collar and is threaded with inner spacing collar, axle and tailstock main shaft axiality; The other end end of axle is axially arranged with the round platform groove inserted for slender axles, and the miner diameter end of round platform groove is near tailstock main shaft side, and the spindle outer wall of round platform groove offers one group of retraction slot; Be arranged with fixed cover outside round platform groove, be provided with wedge shape sleeve between fixed cover and the outer wall of axle, the front end of wedge shape sleeve is near the bigger diameter end of round platform groove; The inwall of wedge shape sleeve and the outer wall of axle are slidably connected, and outer wall and the fixed cover inwall of wedge shape sleeve are slidably connected, and are provided with the locking nut be connected with spindle thread between wedge shape sleeve and the end of tailstock main shaft.
Adopt the stretching device of the slender axles of technical solution of the present invention, comprise clamp body, tailstock main shaft and inner spacing collar, it is outer and be provided with bearing between inner spacing collar and tailstock main shaft that inner spacing collar is located at by tailstock collar bush, clamp body comprises axle, the side of axle is axially inserted inner spacing collar and is threaded with inner spacing collar, axle and tailstock main shaft axiality; The side of axle is threaded with inner spacing collar, can rotate in tailstock main shaft, and axle and tailstock main shaft ensuring coaxiality bearing are for alleviating the frictional force rotating and bring.The end side of axle is axially arranged with the round platform groove inserted for slender axles, and the cell wall of round platform groove offers one group of retraction slot; Be arranged with fixed cover outside round platform groove, be provided with wedge shape sleeve between the outer wall of fixed cover and round platform groove, be provided with wedge shape sleeve between fixed cover and the outer wall of axle, the front end of wedge shape sleeve is near the bigger diameter end of round platform groove; The other end of axle is the clamp body of clamping work pieces, insert for the end of slender axles in round platform groove, the cell wall of round platform groove offers retraction slot, in order to round platform groove radial contraction, wedge shape sleeve then can go deep between axle and fixed cover, impel round platform groove radial contraction, thus will the slender axles clamping of round platform groove be positioned at.Locking nut rotates in axle, thus between the axle outer wall pushed by wedge shape sleeve outside round platform groove and fixed cover, impels round platform groove radial contraction.Utilize the slip between axle and tailstock main shaft, the length that adjustable clamp is concrete, wedge shape sleeve is pushed the gap between axle and fixed cover by the propelling utilizing wedge shape sleeve to be subject to locking nut, thus by round platform groove radial contraction, the slender axles being positioned at round platform groove are fixedly clamped, after fixing, also the relative position between adjustable tailstock main shaft and axle, thus the position that adjustable clamp is concrete, slender axles are regulated to be in tensioning state all the time, avoid the middle bent of slender axles, thus avoid the surface of the work error of turning large, make the surface of the work error of turning little, smoothness is good, precision is good.
Further, the front end diameter of bore of described wedge shape sleeve is greater than rear end diameter of bore, and the front end outside diameter of wedge shape sleeve is consistent with rear end outside diameter.The outer wall of wedge shape sleeve parallels with fixed cover, and inwall is then inclined-plane, uses the bigger diameter end of inclined-plane endoporus to enter in round platform groove, forces round platform groove radial contraction.
Further, the front end diameter of bore of described wedge shape sleeve is consistent with rear end diameter of bore, and the front end outside diameter of wedge shape sleeve is less than rear end outside diameter.Inwall and the axle outer wall of wedge shape sleeve are fitted, and the outer wall of wedge shape sleeve is inclined-plane, and front end is tip, is introduced between axle and fixed cover, then impel round platform groove radial contraction due to entering of bigger diameter end gradually.
Further, the rear end of described wedge shape sleeve is provided with locking card.Wedge shape sleeve is locked, avoids it to slide, affect clamping effect.
Further, the radial direction of described tailstock main shaft, inner spacing collar and axle is equipped with one group of through hole, is provided with alignment pin in through hole.Alignment pin makes the connection between three tightr, fixing more firm.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated:
Fig. 1 is the schematic diagram of the stretching device embodiment one of slender axles of the present invention;
Fig. 2 is the schematic diagram of the embodiment of the present invention two;
View when Fig. 3 is axle of the present invention elongation.
Detailed description of the invention
In figure: tailstock main shaft 1, inner spacing collar 2, axle 3, round platform groove 4, wedge-shaped sleeve 5, fixed cover 6, locking nut 7.
Embodiment one:
As shown in Figure 1, Figure 3, the stretching device of slender axles, comprise clamp body, tailstock main shaft 1 and inner spacing collar 2, it is outer and be provided with bearing between inner spacing collar 2 and tailstock main shaft 1 that tailstock main shaft 1 is sheathed on inner spacing collar 2, clamp body comprises axle 3, one end of axle 3 is axially inserted inner spacing collar 2 and is threaded with inner spacing collar 2, is connected and fixed between axle 3 and inner spacing collar 2 with alignment pin, axle 3 and tailstock main shaft 1 axiality; The other end end of axle 3 is axially arranged with the round platform groove 4 inserted for slender axles, and the miner diameter end of round platform groove 4 is near tailstock main shaft 1 side, and the spindle outer wall of round platform groove 4 offers one group of retraction slot; Fixed cover 6 is arranged with outside round platform groove 4, wedge-shaped sleeve 5 is provided with between the outer wall of fixed cover 6 and axle 3, the front end diameter of bore of wedge-shaped sleeve 5 is greater than rear end diameter of bore, and the front end outside diameter of wedge-shaped sleeve 5 is consistent with rear end outside diameter, the front end that wedge-shaped sleeve is 5 is near the bigger diameter end of round platform groove 4; The outer wall of the inwall that wedge-shaped sleeve is 5 and axle 3 is slidably connected, the outer wall that wedge-shaped sleeve is 5 and fixed cover 6 inwall are slidably connected, the rear end that wedge-shaped sleeve is 5 is provided with locking card, is provided with the locking nut 7 be threaded with axle 3 between wedge-shaped sleeve 5 and the end of tailstock main shaft 1.
In specific implementation process, round platform groove 4 is put in the end of slender axles, then, to direction, round platform groove 4 side rotational lock nut 7, wedge-shaped sleeve 5 promotes by locking nut 7 in round platform groove 4, thus, the front end of wedge-shaped sleeve 5 is introduced between axle 3 and fixed cover 6, fixed cover 6 is fixed, rear end along with wedge-shaped sleeve 5 progresses between axle 3 and fixed cover 6, round platform groove 4 is subject to the pressure of wedge-shaped sleeve 5, make its radial contraction, thus the slender axles be positioned in round platform groove 4 are fixedly clamped, then locking card is located at the end of wedge-shaped sleeve 5, avoid it to slide, the two ends of slender axles are all fixedly clamped with clamp body, linear state is in order to make the middle part of slender axles, clamp body is used to be strained by slender axles, the end of axle 3 can be pulled, the inner spacing collar 2 be sheathed on outside axle 3 is slided on tailstock main shaft 1, thus regulate the distance between the clamp body clamping slender axles two ends, thus be applicable to by fine setting the slender axles clamping various length.
Embodiment two:
As shown in Figure 2: the front end diameter of bore of the wedge-shaped sleeve in embodiment one 5 is greater than rear end diameter of bore, and the front end outside diameter of wedge-shaped sleeve 5 is consistent with rear end outside diameter, replace with: the front end diameter of bore of wedge-shaped sleeve 5 is consistent with rear end diameter of bore, the front end outside diameter of wedge-shaped sleeve 5 is less than rear end outside diameter.
Mode of operation is then identical.
For a person skilled in the art, under the prerequisite not departing from structure of the present invention, can also make some distortion and improvement, these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (5)
1. the stretching device of slender axles, it is characterized in that: comprise clamp body, tailstock main shaft and inner spacing collar, it is outer and be provided with bearing between inner spacing collar and tailstock main shaft that inner spacing collar is located at by tailstock collar bush, clamp body comprises axle, one end of axle is axially inserted inner spacing collar and is threaded with inner spacing collar, axle and tailstock main shaft axiality; The other end end of axle is axially arranged with the round platform groove inserted for slender axles, and the miner diameter end of round platform groove is near tailstock main shaft side, and the spindle outer wall of round platform groove offers one group of retraction slot; Be arranged with fixed cover outside round platform groove, be provided with wedge shape sleeve between fixed cover and the outer wall of axle, the front end of wedge shape sleeve is near the bigger diameter end of round platform groove; The inwall of wedge shape sleeve and the outer wall of axle are slidably connected, and outer wall and the fixed cover inwall of wedge shape sleeve are slidably connected, and are provided with the locking nut be connected with spindle thread between wedge shape sleeve and the end of tailstock main shaft.
2. the stretching device of slender axles as claimed in claim 1, it is characterized in that: the front end diameter of bore of described wedge shape sleeve is greater than rear end diameter of bore, and the front end outside diameter of wedge shape sleeve is consistent with rear end outside diameter.
3. the stretching device of slender axles as claimed in claim 1, it is characterized in that: the front end diameter of bore of described wedge shape sleeve is consistent with rear end diameter of bore, the front end outside diameter of wedge shape sleeve is less than rear end outside diameter.
4. the stretching device of slender axles as described in Claims 2 or 3, is characterized in that: the rear end of described wedge shape sleeve is provided with locking card.
5. the stretching device of slender axles as claimed in claim 4, is characterized in that: the radial direction of described tailstock main shaft, inner spacing collar and axle is equipped with one group of through hole, is provided with alignment pin in through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761827.4A CN104440336B (en) | 2014-12-13 | 2014-12-13 | The stretching device of slender axles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761827.4A CN104440336B (en) | 2014-12-13 | 2014-12-13 | The stretching device of slender axles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104440336A true CN104440336A (en) | 2015-03-25 |
| CN104440336B CN104440336B (en) | 2016-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410761827.4A Expired - Fee Related CN104440336B (en) | 2014-12-13 | 2014-12-13 | The stretching device of slender axles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104440336B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668139A (en) * | 2015-07-03 | 2016-06-15 | 徐工集团工程机械股份有限公司 | Tensioning device and belt conveyor |
| CN114669814A (en) * | 2020-12-24 | 2022-06-28 | 田中金属加工（上海）有限公司 | Clamping tool for linear cutting machining of two sides of slender shaft |
| CN114769643A (en) * | 2022-05-20 | 2022-07-22 | 山西风源机械制造有限公司 | Clamping device for machining slender shaft and numerical control cyclone milling machine tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100043904A (en) * | 2008-10-21 | 2010-04-29 | 현대자동차주식회사 | Clamping jig of torsional strength testing machine for tube |
| CN201519882U (en) * | 2009-11-06 | 2010-07-07 | 赵显华 | Processing device of shaft and pipe workpieces under tightening states |
| CN202193808U (en) * | 2011-04-26 | 2012-04-18 | 池州市邦鼐机电科技有限公司 | Induction quenching prestretching device |
| CN102615291A (en) * | 2012-03-15 | 2012-08-01 | 湘潭大学 | Prestress turning method for shaft parts and prestress turning device |
-
2014
- 2014-12-13 CN CN201410761827.4A patent/CN104440336B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100043904A (en) * | 2008-10-21 | 2010-04-29 | 현대자동차주식회사 | Clamping jig of torsional strength testing machine for tube |
| CN201519882U (en) * | 2009-11-06 | 2010-07-07 | 赵显华 | Processing device of shaft and pipe workpieces under tightening states |
| CN202193808U (en) * | 2011-04-26 | 2012-04-18 | 池州市邦鼐机电科技有限公司 | Induction quenching prestretching device |
| CN102615291A (en) * | 2012-03-15 | 2012-08-01 | 湘潭大学 | Prestress turning method for shaft parts and prestress turning device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668139A (en) * | 2015-07-03 | 2016-06-15 | 徐工集团工程机械股份有限公司 | Tensioning device and belt conveyor |
| CN114669814A (en) * | 2020-12-24 | 2022-06-28 | 田中金属加工（上海）有限公司 | Clamping tool for linear cutting machining of two sides of slender shaft |
| CN114769643A (en) * | 2022-05-20 | 2022-07-22 | 山西风源机械制造有限公司 | Clamping device for machining slender shaft and numerical control cyclone milling machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104440336B (en) | 2016-08-31 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20211213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |