CN101262970B - Device for clamping a workpiece or tool comprising a hollow shaft cone - Google Patents
Device for clamping a workpiece or tool comprising a hollow shaft cone Download PDFInfo
- Publication number
- CN101262970B CN101262970B CN2006800336764A CN200680033676A CN101262970B CN 101262970 B CN101262970 B CN 101262970B CN 2006800336764 A CN2006800336764 A CN 2006800336764A CN 200680033676 A CN200680033676 A CN 200680033676A CN 101262970 B CN101262970 B CN 101262970B
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- CN
- China
- Prior art keywords
- gripping sleeve
- conehead
- clamping
- pulling clamp
- cone
- 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.)
- Expired - Fee Related
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Abstract
The invention relates to a device for clamping a workpiece (2) or tool comprising a hollow shaft cone (1) or similar, which comprises a tie bolt (4) which is mounted in an axially displaceable manner in the base body (3), in order to actuate a clamping head (6) which co-operates with clamping claws (5). The axial bearing of the tie bolt (4) is secured in a clamping position by self-locking without using the force of a clamping spring.
Description
Technical field
The present invention relates to a kind of be used to clamp the workpiece with hollow shaft cone etc. or the device of instrument, this clamping device comprises the tractive bolt that can be contained in the clamp body with moving axially, so as to operate one with the coefficient chuck of claw.
Background technology
The operation of this type clamping device is performed such: the tractive bolt moves axially, and promptly receives tension to carry out fastening, and desires to unclamp the clamping of workpiece or instrument, and then actuating pressure on this tractive bolt makes it axially to move into again the released position.In order to be locked in the axial location of tractive bolt in the clamping position; Prior art loads the tractive bolt through a fastening spring usually; Usually folded or spiral dish type bullet is pressed onto the tractive bolt clamping position and locks its position with sizable power with disc spring for this reason, unloads and also keeps this state even pulling force is pulled the bolt pine.But the shortcoming of this method is the folded balance mass that can damage the rotating shaft of the lathe that is supporting clamping device of this disc spring.
Summary of the invention
So the objective of the invention is to design above-mentioned the sort of device, thereby can improve balance mass.
According to above-mentioned the sort of device of the present invention, this purpose is achieved in that through self-locking to be locked in the axial location of tractive bolt in the clamping position, and without the power of fastening spring.
The advantage of this device is: after power produced, the introducing of pulling force can be removed from the tractive bolt, and the power of introducing stores through self-locking, that is does not need fastening spring.The balance mass of the rotary main shaft of lathe is obviously improved, and can reach high rotational speed.In addition, also have the advantage of simplify installing,, and do not receive the obstruction of fastening spring because all available easy mode of required parts axially introduces the clamp body from the front.
Within the scope of the present invention, preferred especially scheme is, on clamp body, axially immovably is provided with a gripping sleeve, pulling clamp on this gripping sleeve by axially directed, this pulling clamp with side contacts in it on the tractive bolt.And the tractive bolt has a conehead, and pulling clamp has a cambridge ring, and gripping sleeve has an inner cone.Because conehead, cambridge ring and inner cone have reached the high-clamping force of needs with easy mode through axial mutual the moving of participating in parts, this clamping force also can guarantee the security that provides, so as under high speed conditions clamping work pieces or instrument reliably.
In addition, conehead preferably have one radially step dwindle towards the tractive bolt, pulling clamp preferably has an interior axle collar that contacts with this step, and pulling clamp is avoided this step with the axle collar in it in the axial range of the inner cone of gripping sleeve.This moulding has at first guaranteed can realize through pulling clamp to shifting to clamping position through the tractive stud shaft big the moving axially of chuck, makes claw contact and produce preparatory tensioning with hollow shaft cone.When continue moving the tractive bolt in this case, the cambridge ring of pulling clamp radially outward avoid and with conehead by putting.Like this, under the situation of the given axial displacement of tractive bolt,, realized big self-locking owing to having improved power, that is cambridge ring is locked fully between the inner cone of conehead and gripping sleeve though it is moving to have reduced the axial position of pulling clamp.Even axial tension is unclamped from the tractive bolt, but that this position of pulling clamp also can keep is motionless, so the whole main shaft of tractive bolt and lathe can contactlessly rotate with respect to a possible operating system.
Secondly, within the scope of the invention, the pulling clamp that is used to move axially chuck is connected with this chuck through a bolt and a threaded collar.In principle, pulling clamp can directly affact on the chuck, and many structures have advantage aspect processing, assembling and the coolant channel under the situation of using bolt and threaded collar.
For fear of rotatablely move (owing to this relative rotary motion cause the obliquity of jaw produce uncertain clamping force) of pulling clamp with respect to gripping sleeve, pulling clamp leads in a slotted hole of gripping sleeve.
Within the scope of the invention; Nose cone has one 4 ° to 8 ° especially 6 ° coning angles; Proved favourable already, because this angle helps when the tractive bolt moves and the cambridge ring of pulling clamp satisfies the needs of the enough axial displacement of pulling clamp when compressing facing to the inner cone of gripping sleeve with combining.
If the inner cone of gripping sleeve has one 9 ° to 15 ° especially 12 ° cone angles, more can promote above-mentioned effect.In this case, in order to guarantee a big contact-making surface, the inner peripheral surface of cambridge ring should have a gradient corresponding to the cone angle of conehead, and the outer circumference surface of cambridge ring then should have a gradient corresponding to the cone angle of gripping sleeve.
In addition, if during the anti-step that blocks conehead of the interior axle collar of pulling clamp, then this conehead preferably has a contact-making surface that contacts with threaded collar.Can guarantee that through this moulding the tractive bolt seamlessly is synchronized with the movement at pulling clamp when the released position moves on to clamping position, that is pulling clamp is with evenly anti-step that blocks the tractive bolt of the axle collar in it.
Description of drawings
Specify the present invention with an embodiment shown in the drawings below, wherein:
Fig. 1 representes a vertical section of apparatus of the present invention.
The specific embodiment
Device shown in the figure is used for clamping a workpiece 2 or an instrument with a hollow shaft cone 1; This device has one be contained in the clamp body 3 can axially movable tractive bolt 4 for this reason; It is used for operating one with claw 5 coefficient chucks 6, that is realize through tractive bolt 4 moving axially between released position and a clamping position that is shown in the accompanying drawing first half that is shown in the accompanying drawing Lower Half.For clamping work pieces 2; Tractive bolt 4 is drawn into clamping position through a unshowned in the accompanying drawings operating mechanism from the released position; In this case, through a pulling clamp 7 and a bolt 8 and threaded collar 9 chuck 6 is moved axially and the pawl head 10 of claw 5 is radially moved to contact with conulite 1.
Device shown in the accompanying drawing it should be noted that in clamp body 3, arranged a gripping sleeve 11 that does not axially move, pulling clamp 7 is axially directed on this gripping sleeve, and with its interior side contacts tractive bolt 4.Wherein tractive bolt 4 has a conehead 12, and pulling clamp 7 has a cambridge ring 13, and gripping sleeve 11 then has an inner cone 14.Like this, when the released position moves on to clamping position, just produce self-locking at tractive bolt 4, the axial location of pulling clamp 7 is confirmed in this self-locking, even operating mechanism does not continue a tension to tractive bolt 4.So as if the power of being introduced through tractive bolt 4 by this operating mechanism be stored by this self-locking; And guaranteed workpiece 2 reliable grip on its hollow shaft cone 1; And need not utilize the power of fastening spring for this reason, this spring must guarantee the axial location of tractive bolt 4 with respect to clamp body 3 or gripping sleeve 11 with its elastic force in clamping position.So can not jeopardize the reliability of clamping owing to the fatigue of fastening spring.In addition, the self-locking of the application of the invention can make can't help the tractive bolt 4 that fastening spring loads and is rotated with whole main shaft or clamp body 3, and need not to keep being connected with its operating system, thus improved balance mass, and can improve rotating speed.
Also can know from accompanying drawing and to find out; Conehead 12 with one radially step 15 dwindle towards tractive bolt 4; Pulling clamp 7 has an interior axle collar 16 that is used to contact step 15, and its interior axle collar 16 of pulling clamp 7 usefulness can be avoided step 15 in the axial range of the inner cone 14 of gripping sleeve 11.In the embodiment shown in the figures, conehead 12 has 6 ° cone angle, and the inner cone 14 of gripping sleeve 11 then has 12 ° cone angle.The inner peripheral surface of cambridge ring 13 and the gradient of outer circumference surface are consistent with the gradient of the parts of corresponding contact.
Below the operation principle of concise and to the point tracing device: begin from second released position that illustrates, through unshowned operating mechanism a tension to tractive bolt 4, so tractive bolt 4 is moved to the left through this pulling force in the drawings.In the process that this moves; Contact the step of tractive bolts 4 through the interior axle collar 16 of pulling clamp 7; Tractive bolt 4 at first drives the pulling clamp 7 that in two slotted holes 17, leads with respect to gripping sleeve for fear of imbalance; And through bolt 8 drive threaded collar 9 and chuck 6, so this chuck makes its pawl head 10 of claw 5 usefulness radially outward swing and contact with the side recessed 18 of hollow shaft cone 1.That is to say; Acting in conjunction through the step 15 and the interior axle collar 16 has realized that the rapid axial of chuck 6 moves; And after reaching predetermined axial stroke; The interior axle collar 16 of pulling clamp 7 can be avoided step 15, and contacts with conehead 12 with the inner peripheral surface of cambridge ring 13, is pressed onto on the cambridge ring 13 of gripping sleeve 11 with outer circumference surface simultaneously.Thereby when tractive bolt 4 continues to move axially; Though 7 of pulling clamps are pulled in axially slightly thus; But the power wedging that between conehead 12 and gripping sleeve 11, together increases; Till reaching self-locking, even the clamping force that this self-locking also can provide requirement to reach when the pulling force of operating mechanism removes from tractive bolt 4.
If will unclamp clamping subsequently; Tractive bolt 4 moves on to the released position from left to right from clamping position; So the clamping of pulling clamp 7 between conehead 12 and gripping sleeve 11 is released; And tractive bolt 4 also moves with respect to pulling clamp 7, and till this tractive bolt is used its contact-making surface 19 and threaded collar 9 is contacted, thereby the interior axle collar 16 can instead block the step 15 of tractive bolt 4 again.The continuation of tractive bolt 4 is moved and is caused moving of clamping head 6, so its pawl head 10 of jaw 5 usefulness unclamps workpiece 2.
Claims (8)
1. be used for clamping and have the workpiece (2) of hollow shaft cone (1) or the device of instrument, comprise that be contained in the clamp body (3) can axially movable tractive bolt (4), so that operation and the coefficient chuck of claw (5) (6); Wherein, The axial location of tractive bolt (4) is locked in clamping position through self-locking, and without the power of fastening spring, it is characterized by; In clamp body (3), axially do not arranged gripping sleeve (11) movably; Pulling clamp (7) leads on this gripping sleeve, and this pulling clamp is with side contacts tractive bolt (4) in it, and tractive bolt (4) has, and conehead (12), pulling clamp (7) have cambridge ring (13), gripping sleeve (11) has inner cone (14); Wherein, Conehead (12) has the radially step (15) that dwindles towards tractive bolt (4), and pulling clamp (7) has the interior axle collar (16) that contacts with step (15), and pulling clamp (7) in the axial range of the inner cone (14) of gripping sleeve (11) available in it axle collar (16) avoid step (15); Wherein, the pulling clamp (7) that is used to move axially chuck (6) is connected with this chuck through bolt (8) and threaded collar (9).
2. by the device of claim 1, it is characterized by, pulling clamp (7) leads at least one slotted hole (17) of gripping sleeve (11).
3. by the device of claim 1 or 2, it is characterized by, conehead (12) has 4 ° to 8 ° cone angle.
4. by the device of claim 1 or 2, it is characterized by, the inner cone (14) of gripping sleeve (11) has 9 ° to 15 ° cone angle.
5. by the device of claim 3, it is characterized by, the inner peripheral surface of cambridge ring (13) has the gradient corresponding to the cone angle of conehead (12), and the outer circumference surface of cambridge ring (13) then has the gradient corresponding to the cone angle of gripping sleeve (11).
6. by claim 1 or 2 device, it is characterized by, if the interior axle collar (16) of pulling clamp (7) is anti-when clamping the step (15) of conehead (12), then conehead (12) has the contact-making surface (19) that contacts with threaded collar (9).
7. by the device of claim 1 or 2, it is characterized by, conehead (12) has 6 ° cone angle.
8. by the device of claim 1 or 2, it is characterized by, the inner cone (14) of gripping sleeve (11) has 12 ° cone angle.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005043722 | 2005-09-13 | ||
| DE102005043722.2 | 2005-09-13 | ||
| DE102005049377A DE102005049377A1 (en) | 2005-09-13 | 2005-10-15 | Device for clamping a hollow shaft tapered workpiece or tool |
| DE102005049377.7 | 2005-10-15 | ||
| PCT/DE2006/001016 WO2007031045A1 (en) | 2005-09-13 | 2006-06-14 | Device for clamping a workpiece or tool comprising a hollow shaft cone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101262970A CN101262970A (en) | 2008-09-10 |
| CN101262970B true CN101262970B (en) | 2012-03-14 |
Family
ID=39962929
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680033694.2A Expired - Fee Related CN101262971B (en) | 2005-09-13 | 2006-06-14 | Method for operating an actuation unit and device for carrying the same |
| CN2006800336764A Expired - Fee Related CN101262970B (en) | 2005-09-13 | 2006-06-14 | Device for clamping a workpiece or tool comprising a hollow shaft cone |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680033694.2A Expired - Fee Related CN101262971B (en) | 2005-09-13 | 2006-06-14 | Method for operating an actuation unit and device for carrying the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN101262971B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009044105A1 (en) * | 2009-09-25 | 2011-03-31 | Röhm Gmbh | Clamping device with stationary release unit |
| JP5674116B2 (en) | 2010-11-30 | 2015-02-25 | シチズンホールディングス株式会社 | Fixing device for workpiece in machine tool and machine tool provided with this fixing device |
| CN102513843B (en) * | 2011-12-16 | 2014-03-12 | 江苏恒力组合机床有限公司 | Automatic tensioning mechanism for accessory head of square ram with small cross section |
| CN102962761A (en) * | 2012-12-10 | 2013-03-13 | 大连创达技术交易市场有限公司 | Clamp for lapping hollow steel ball |
| CN104836946B (en) * | 2015-04-21 | 2019-05-03 | 昆山先捷精密电子有限公司 | Mobile phone camera frame and its manufacturing method |
| EP3655187B1 (en) * | 2017-05-26 | 2023-02-22 | Ralf Dupont | Clamping device and method for clamping a part |
| CN111752333B (en) * | 2020-07-17 | 2024-05-28 | 上海交通大学 | Multifunctional micro-motion macro-control assembly and device |
| CN113021041A (en) * | 2021-03-22 | 2021-06-25 | 宁波天控五轴数控技术有限公司 | Quick tool changing structure of main shaft |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4668137A (en) * | 1983-11-21 | 1987-05-26 | Mitsui Seiki Kogyo Co., Ltd. | High-frequency motor incorporating tool drawing-up device therein |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1075565A (en) * | 1953-03-09 | 1954-10-18 | Prec Ind | Hydraulic actuator for machine tool part carriers |
| US3568566A (en) * | 1968-08-12 | 1971-03-09 | Carlton Machine Tool Co | Tool spindle mechanism |
| DE19618610A1 (en) * | 1995-05-13 | 1996-11-14 | Gerhard Dr Ing Huber | Tool spindle for use with machine tool, esp. tool changer |
| CN1057037C (en) * | 1995-07-14 | 2000-10-04 | 清华大学 | High frequency response, large stroke and high precision microstep feeder |
| CN2584349Y (en) * | 2002-11-21 | 2003-11-05 | 洛阳轴研科技股份有限公司 | Electromagnetic coreless holder for high-precision rolling bearing grinding |
| CN2628211Y (en) * | 2003-03-27 | 2004-07-28 | 洛阳轴研科技股份有限公司 | Electric device for removal of main axle loose broach bearing for large processing center and digital control milling |
-
2006
- 2006-06-14 CN CN200680033694.2A patent/CN101262971B/en not_active Expired - Fee Related
- 2006-06-14 CN CN2006800336764A patent/CN101262970B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4668137A (en) * | 1983-11-21 | 1987-05-26 | Mitsui Seiki Kogyo Co., Ltd. | High-frequency motor incorporating tool drawing-up device therein |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101262970A (en) | 2008-09-10 |
| CN101262971B (en) | 2013-08-21 |
| CN101262971A (en) | 2008-09-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20210614 |