CN201432254Y - Self-centering clamp - Google Patents
Self-centering clamp Download PDFInfo
- Publication number
- CN201432254Y CN201432254Y CN2009201180468U CN200920118046U CN201432254Y CN 201432254 Y CN201432254 Y CN 201432254Y CN 2009201180468 U CN2009201180468 U CN 2009201180468U CN 200920118046 U CN200920118046 U CN 200920118046U CN 201432254 Y CN201432254 Y CN 201432254Y
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- China
- Prior art keywords
- slide block
- wedge
- right slide
- piston rod
- left slider
- 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 utility model discloses a self-centering clamp, which comprises a driving device and a clamping device. The driving device comprises an oil cylinder body and a piston which is slidably matched inthe oil cylinder body; the clamping device comprises a clamping seat, a left slide block, a right slide block, a left clamping jaw and a right clamping jaw, wherein the left slide block and the rightslide block are slidably matched in a chute of the clamping seat; the clamping device also comprises a spring, a piston rod and a wedge-shaped block, wherein one end of the spring is connected with the left slide block, and the other end thereof is connected with the right slide block; the lower end of the piston rod is fixedly connected with the piston; the wedge-shaped block is fixed at the upper end of the piston rod; the opposite end faces of the left slide block and the right slide block are respectively provided with protruding heads with notches which open downwards; a first bevel on the left slide block is slidably matched with a right bevel of the wedge-shaped block; a second bevel on the right slide block is slidably matched with a left bevel of the wedge-shaped block; and a gapis arranged between the left slide block and the right slide block. The piston rod and the wedge-shaped block are not easily deformed, the generated clamping force is large, the part does not loosen due to insufficient clamping force in the machining process, the centering accuracy of the part is high, and the machining accuracy of the part is improved.
Description
Technical field:
The utility model relates to a kind of machine tool component, relates in particular to a kind of self-centering fixture.
Background technology:
At present, be usually used in Waterwheel-type, on the portable lathe of rotating disc type or other slide units the clamping part is made the self-centering fixture of the disposable clamping processing of multistation, its structure is as follows: comprise drive unit and clamping device, described drive unit comprises cylinder body, the piston of sliding fit in cylinder body, the piston rod that lower end and piston are affixed, the clamping cylinder head is equipped with in described cylinder body upper end, described clamping device is by clamping seats, left slider, right slide block, two jaws and two bell crank levers are formed, what described piston rod was coaxial is located in the centre bore that clamps cylinder head and clamping seats, one end and the slide block of described lever are hinged, the upper end of the other end and piston rod is hinged, two jaws are contained in respectively on left slider and the right slide block, and described clamping cylinder head is fixed on the bottom of clamping seats.The operation principle of this self-centering fixture is: pulls down lever by piston rod, makes left slider and right slide block near clamping part, and the piston rod pushing lever that makes progress, thus make left slider and right slide block separately unclamp part.
This self-centering fixture has following shortcoming: structure is not compact, volume is big, lever is yielding, clamping force is little, the part centering precision is not high, and hinge can not compensate automatically to wearing and tearing when wearing and tearing occurring, becoming flexible can appear in part when part is carried out fine finishining, thereby has influenced the machining accuracy of part.
The utility model content:
The technical problems to be solved in the utility model is, a kind of compact conformation is provided, and volume is little, and not yielding, clamping force is big, and centering precision is high and can compensate automatically after the wearing and tearing occurring, and improves the self-centering fixture of part processing precision.
The realization the technical solution of the utility model is: comprise drive unit and clamping device; Described drive unit comprises cylinder body, the piston of sliding fit in cylinder body; Described clamping device comprises clamping seats, left slider and the right slide block of sliding fit in the chute of clamping seats, be contained in left jaw and right jaw on left slider and the right slide block respectively, described clamping device also comprises spring, piston rod, wedge, one end of described spring is connected with left slider, and the other end is connected with right slide block; The lower end and the piston of described piston rod are affixed, and described wedge is fixed on the upper end of piston rod; Described left slider and right slide block opposing end faces all have notched outstanding head, the equal opening of described breach down, first inclined-plane on the described left slider and the right tilted surface sliding fit of wedge, second inclined-plane on the described right slide block and the left tilted surface sliding fit of wedge; Between described left slider and the right slide block space is arranged.
Described left slider and right slide block are provided with coaxial blind hole, and an end of described spring is against in the blind hole I on the left slider, and the other end is against in the blind hole II on the right slide block.
The cross section of described wedge is an isosceles trapezoid.
Breach on breach on the described left slider and the right slide block is the wedge-shaped indentation that matches with wedge.
The lower end of described piston rod is provided with screw thread, and the lower end of described piston rod is screwed in the screw of piston, and the lower end of piston rod is exposed at the following part in piston bottom surface and is rotary with nut.
After adopting said structure, the utility model self-centering fixture compared with prior art has the following advantages:
The utility model promotes the rising of lifting voussoir by piston left slider is drawn to the right, right slide block to the Zola, the jaw that is contained on left slider and the right slide block clamps part, hydraulic pressure imposes lasting thrust by piston to piston rod and wedge, first inclined-plane on the left slider and second inclined-plane on the right slide block are close to the right tilted surface and the left tilted surface of lifting voussoir all the time, part is also just clamped all the time, when producing the gap because of wearing and tearing between first inclined-plane, second inclined-plane and wedge, piston promotes piston rod and wedge and rises the gap is compensated automatically.Piston rod and wedge are not yielding, and the clamping force of generation is big, can not produce looseningly inadequately because of clamping force adding the man-hour part, and the centering precision height of part has improved the machining accuracy of part.
Description of drawings:
Fig. 1 is the structural representation of the utility model self-centering fixture clamped condition;
Fig. 2 is the left view of the utility model self-centering fixture clamped condition;
Fig. 3 is the right slide block right view of the utility model self-centering fixture;
Fig. 4 is the right slide block vertical view of the utility model self-centering fixture;
Fig. 5 is the utility model self-centering fixture left slider left view;
Fig. 6 is the utility model self-centering fixture left slider vertical view;
Fig. 7 is the vertical view that the utility model self-centering fixture left slider and right slide block inserting are closed;
Shown in the figure 1, cylinder body; 2, piston; 3, clamp seat; 4, left slider; 4.1, first inclined-plane; 4.2, blind hole I; 5, right slide block; 5.1, second inclined-plane; 5.2, blind hole II; 6, left jaw; 7, right jaw; 8, spring; 9, piston rod; 10, wedge; 11, slide block pressing plate; 12, clamp cylinder head.
The specific embodiment:
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7, the utility model centralizer comprises drive unit and clamping device, described drive unit comprises cylinder body 1, the piston 2 of sliding fit in cylinder body 1, described clamping device comprises clamping seats 3, left slider 4 and the right slide block 5 of sliding fit in the chute of clamping seats 3, be contained in left jaw 6 and right jaw 7 on left slider 4 and the right slide block 5 respectively, with clamping seats 3 bolted slide block pressing plates 11 left slider 4 and right slide block 5 are limited in the chute of clamping seats 3, described cylinder body 1 is by clamping the bottom that cylinder head 12 is fixed on clamping seats 3.
The utility model also comprise piston rod 9 that spring 8, lower end and piston 2 spin, piston rod 9 the upper end one be provided with the wedge 10 that cross section is an isosceles trapezoid, described spring 8 is two, described piston rod 9 coaxial being located in the centre bore that clamps cylinder head 11 and clamping seats 4, described piston rod 9 is exposed at the following part in piston 2 bottom surfaces and is rotary with nut; There is an outstanding head of band breach the right side of described left slider 4, there are two outstanding heads of band breach the left side of described right slide block 5, the equal opening of described breach down, described breach is the wedge-shaped indentation that matches with wedge 10, the both sides of the outstanding head of described left slider 4 also are provided with two blind hole I 4.2, be provided with accordingly on the described right slide block 5 two with left slider 4 on the coaxial blind hole II 5.2 of blind hole I4.2, one end of spring 8 is against in the blind hole I 4.2, the other end is against in the blind hole II 5.2, the outstanding head inserting of the outstanding head of described left slider 4 and right slide block 5 is closed, first inclined-plane 4.1 on the described left slider 4 and the right tilted surface sliding fit of wedge 10, second inclined-plane 5.1 on the right slide block 5 and. the left tilted surface sliding fit of wedge 10 leave the space between described left slider 4 and the right slide block 5.
Operation principle of the present utility model is as follows:
Before the clamping, spring 8 is in the state that freely stretches, and paste mutually with the lower end on first inclined-plane 4.1 upper end of the right tilted surface of wedge 10, and paste mutually with the lower end on second inclined-plane 5.1 upper end of wedge 10 left tilted surfaces.
When clamping part, part is placed between left jaw 6 and the right jaw 7, at the bottom of cylinder body 1 stamping press oil, piston 2 promotes piston rod 9 and wedge 10 rises, the right tilted surface of wedge 10 upwards slides along first inclined-plane 4.1 on the left slider 4, left slider 4 is drawn to the right, the left tilted surface of wedge 10 upwards slides along second inclined-plane 5.1 on the right slide block 5, right slide block 5 to the Zola, spring 8 is also simultaneously compacted, be connected left jaw 6 on left slider 4 and the right slide block 5 and right jaw 7 also respectively and then and be moved to the left up to part clamped to the right, hydraulic pressure imposes uninterrupted thrust by 2 pairs of piston rods 9 of piston and wedge 10, so first inclined-plane 4.1, second inclined-plane 5.1 is close to all the time with the inclined-plane of wedge 10, part is also just clamped all the time, on first inclined-plane 4.1, when producing the gap because of wearing and tearing between second inclined-plane 5.1 and the wedge 8,2 in piston can promote piston rod 9 and wedge 10 and rise the gap is compensated automatically.Wedge is not yielding, and the clamping force of generation is big, can not produce looseningly inadequately because of clamping force adding the man-hour part, and the centering precision height of part has improved the machining accuracy of part.
When unclamping part, at the epicoele stamping press oil of cylinder body 1, piston 2 drives piston rod 9 and wedge 10 descends, and the elastic force of spring 8 makes left slider 4 separate with right slide block 5, thereby left jaw 6 and right jaw 7 also just separately unclamp part, get back to the state before clamping.
When different parts are carried out self-centering clamping, can between jaw 6, be furnished with corresponding centering clamp, this is way commonly used in the practice, belongs to prior art.The Sealing Technology that the utility model relates to all adopts prior art.Relate to the prior art part and no longer launch narration.
The above embodiment is the preferable embodiment of the utility model, can not regard the restriction to the utility model claim as, and its concrete structure allows variation, as: as described in drive unit also can adopt other drive units, such as pneumatic shuttle; The cross section of described wedge 10 also can be an isosceles triangle; Described breach also can be the right-angled trapezium breach; Described piston rod 9 also can be that two parts are connected with wedge 10; Or the like.In a word, all various variations of being done in the protection domain of the utility model independent claims all drop in the protection domain of the present utility model.
Claims (5)
1, a kind of self-centering fixture comprises drive unit and clamping device; Described drive unit comprises cylinder body (1), the piston (2) of sliding fit in cylinder body (1); Described clamping device comprises clamping seats (3), left slider (4) and the right slide block (5) of sliding fit in the chute of clamping seats (3), be contained in left jaw (6) and right jaw (7) on left slider (4) and the right slide block (5) respectively, it is characterized in that: described clamping device also comprises spring (8), piston rod (9), wedge (10), one end of described spring (8) is connected with left slider (4), and the other end is connected with right slide block (5); The lower end of described piston rod (9) and piston (2) are affixed, and described wedge (10) is fixed on the upper end of piston rod (9); Described left slider (4) all has notched outstanding head with right slide block (5) opposing end faces, the equal opening of described breach down, first inclined-plane (4.1) on the described left slider (4) and the right tilted surface sliding fit of wedge (10), second inclined-plane (5.1) on the described right slide block (5) and the left tilted surface sliding fit of wedge (10); Between described left slider (4) and the right slide block (5) space is arranged.
2, according to the described self-centering fixture of claim 1, it is characterized in that: described left slider (4) is provided with coaxial blind hole with right slide block (5), one end of described spring (8) is against in the blind hole I (4.2) on the left slider (4), and the other end is against in the blind hole II (5.2) on the right slide block (5).
3, according to the described self-centering fixture of claim 1, it is characterized in that: the cross section of described wedge (10) is an isosceles trapezoid.
4, according to the described self-centering fixture of claim 1, it is characterized in that: the breach on breach on the described left slider (4) and the right slide block (5) is the wedge-shaped indentation that matches with wedge (10).
5, according to the described self-centering fixture of claim 1, it is characterized in that: the lower end of described piston rod (9) is provided with screw thread, the lower end of described piston rod (9) is screwed in the screw of piston (2), and the lower end of piston rod (9) is exposed at the following part in piston (2) bottom surface and is rotary with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201180468U CN201432254Y (en) | 2009-04-16 | 2009-04-16 | Self-centering clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201180468U CN201432254Y (en) | 2009-04-16 | 2009-04-16 | Self-centering clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201432254Y true CN201432254Y (en) | 2010-03-31 |
Family
ID=42051068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201180468U Expired - Fee Related CN201432254Y (en) | 2009-04-16 | 2009-04-16 | Self-centering clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201432254Y (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920350A (en) * | 2010-09-09 | 2010-12-22 | 江苏无锡建华机床附件集团有限公司 | Vertical type fixed hydraulic power chuck |
| CN102744698A (en) * | 2012-07-31 | 2012-10-24 | 广西玉林达业机械配件有限公司 | Automatic centering device |
| CN102764997A (en) * | 2012-08-07 | 2012-11-07 | 苏州原点工业设计有限公司 | Self-locking positioning mechanism |
| CN102950492A (en) * | 2011-08-26 | 2013-03-06 | 吴江市海鑫机械有限公司 | Quick clamping clamp |
| CN103433681A (en) * | 2013-08-14 | 2013-12-11 | 苏州华日金菱机械有限公司 | Roller welding frame |
| CN104162857A (en) * | 2014-08-01 | 2014-11-26 | 大连四达高技术发展有限公司 | Accurate positioning and locking mechanism |
| CN104741954A (en) * | 2015-03-31 | 2015-07-01 | 东风汽车公司 | Double-oblique-face double-way floating pairing workpiece automatic clamping jig |
| CN105522493A (en) * | 2014-10-23 | 2016-04-27 | 富鼎电子科技(嘉善)有限公司 | Clamping device |
| CN105798677A (en) * | 2016-05-24 | 2016-07-27 | 合肥吉年机械设备有限公司 | Workpiece clamp for milling machine |
| CN106064359A (en) * | 2016-07-13 | 2016-11-02 | 鹰普（中国）有限公司 | A kind of Stretchable locating apparatus |
| CN106141686A (en) * | 2016-08-23 | 2016-11-23 | 安徽池州家用机床股份有限公司 | The punching of a kind of automobile shafts fork face and shaving special purpose machine tool |
| CN106271711A (en) * | 2016-08-29 | 2017-01-04 | 天津立中车轮有限公司 | A kind of double oil cylinder self-centering fixture |
| CN106925967A (en) * | 2017-04-11 | 2017-07-07 | 浙江工业大学 | The embedded binder clip handling equipment of wedge shape |
| CN107856046A (en) * | 2017-09-12 | 2018-03-30 | 韦健杭 | A kind of improved machine robot arm hand |
| CN108297195A (en) * | 2017-12-19 | 2018-07-20 | 芜湖市夏氏世家家具有限公司 | A kind of rectangular plank circular-angle machining device |
| CN108435953A (en) * | 2018-03-23 | 2018-08-24 | 安徽义良罐业科技有限公司 | A kind of tea can processing fixing device |
| CN109048435A (en) * | 2018-08-24 | 2018-12-21 | 上海宁远精密机械股份有限公司 | A kind of multi-station parallel clip claw mechanism |
| CN109100547A (en) * | 2018-10-31 | 2018-12-28 | 东风汽车电子有限公司 | A kind of board information terminal assembly voltage ageing flexibility inspection side fixture |
| CN109352389A (en) * | 2018-12-07 | 2019-02-19 | 江西洪都航空工业集团有限责任公司 | A kind of hydraulic quick-clamping system |
| CN110315375A (en) * | 2019-07-19 | 2019-10-11 | 科德数控股份有限公司 | A kind of fixture with standard knife handle interface |
| CN110576401A (en) * | 2019-09-27 | 2019-12-17 | 珠海格力智能装备有限公司 | positioning device |
| CN110640489A (en) * | 2019-10-09 | 2020-01-03 | 界首市登田五金制品有限公司 | Clamping positioning mechanism for machining inner ring of ultra-miniature bearing |
| CN111215934A (en) * | 2020-02-21 | 2020-06-02 | 成都力中数控设备有限公司 | Clamping device and clamping method |
| CN114211216A (en) * | 2021-12-17 | 2022-03-22 | 长春一东离合器股份有限公司 | Grabbing device after clutch assembly is accomplished |
| CN114393530A (en) * | 2022-02-09 | 2022-04-26 | 南京中拓科技有限公司 | Latch fixing mechanism of automobile safety belt |
-
2009
- 2009-04-16 CN CN2009201180468U patent/CN201432254Y/en not_active Expired - Fee Related
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920350A (en) * | 2010-09-09 | 2010-12-22 | 江苏无锡建华机床附件集团有限公司 | Vertical type fixed hydraulic power chuck |
| CN102950492A (en) * | 2011-08-26 | 2013-03-06 | 吴江市海鑫机械有限公司 | Quick clamping clamp |
| CN102744698A (en) * | 2012-07-31 | 2012-10-24 | 广西玉林达业机械配件有限公司 | Automatic centering device |
| CN102764997A (en) * | 2012-08-07 | 2012-11-07 | 苏州原点工业设计有限公司 | Self-locking positioning mechanism |
| CN102764997B (en) * | 2012-08-07 | 2014-07-09 | 苏州原点工业设计有限公司 | Self-locking positioning mechanism |
| CN103433681A (en) * | 2013-08-14 | 2013-12-11 | 苏州华日金菱机械有限公司 | Roller welding frame |
| CN104162857A (en) * | 2014-08-01 | 2014-11-26 | 大连四达高技术发展有限公司 | Accurate positioning and locking mechanism |
| CN105522493A (en) * | 2014-10-23 | 2016-04-27 | 富鼎电子科技(嘉善)有限公司 | Clamping device |
| CN104741954A (en) * | 2015-03-31 | 2015-07-01 | 东风汽车公司 | Double-oblique-face double-way floating pairing workpiece automatic clamping jig |
| CN105798677A (en) * | 2016-05-24 | 2016-07-27 | 合肥吉年机械设备有限公司 | Workpiece clamp for milling machine |
| CN106064359A (en) * | 2016-07-13 | 2016-11-02 | 鹰普（中国）有限公司 | A kind of Stretchable locating apparatus |
| CN106141686A (en) * | 2016-08-23 | 2016-11-23 | 安徽池州家用机床股份有限公司 | The punching of a kind of automobile shafts fork face and shaving special purpose machine tool |
| CN106271711A (en) * | 2016-08-29 | 2017-01-04 | 天津立中车轮有限公司 | A kind of double oil cylinder self-centering fixture |
| CN106925967A (en) * | 2017-04-11 | 2017-07-07 | 浙江工业大学 | The embedded binder clip handling equipment of wedge shape |
| CN107856046A (en) * | 2017-09-12 | 2018-03-30 | 韦健杭 | A kind of improved machine robot arm hand |
| CN108297195B (en) * | 2017-12-19 | 2020-10-27 | 芜湖市夏氏世家家具有限公司 | Square plank fillet processingequipment |
| CN108297195A (en) * | 2017-12-19 | 2018-07-20 | 芜湖市夏氏世家家具有限公司 | A kind of rectangular plank circular-angle machining device |
| CN108435953A (en) * | 2018-03-23 | 2018-08-24 | 安徽义良罐业科技有限公司 | A kind of tea can processing fixing device |
| CN109048435A (en) * | 2018-08-24 | 2018-12-21 | 上海宁远精密机械股份有限公司 | A kind of multi-station parallel clip claw mechanism |
| CN109048435B (en) * | 2018-08-24 | 2019-12-13 | 上海宁远精密机械股份有限公司 | multi-station parallel clamping jaw mechanism |
| CN109100547A (en) * | 2018-10-31 | 2018-12-28 | 东风汽车电子有限公司 | A kind of board information terminal assembly voltage ageing flexibility inspection side fixture |
| CN109352389A (en) * | 2018-12-07 | 2019-02-19 | 江西洪都航空工业集团有限责任公司 | A kind of hydraulic quick-clamping system |
| CN110315375B (en) * | 2019-07-19 | 2021-04-06 | 科德数控股份有限公司 | Clamp with standard knife handle interface |
| CN110315375A (en) * | 2019-07-19 | 2019-10-11 | 科德数控股份有限公司 | A kind of fixture with standard knife handle interface |
| CN110576401A (en) * | 2019-09-27 | 2019-12-17 | 珠海格力智能装备有限公司 | positioning device |
| CN110640489A (en) * | 2019-10-09 | 2020-01-03 | 界首市登田五金制品有限公司 | Clamping positioning mechanism for machining inner ring of ultra-miniature bearing |
| CN110640489B (en) * | 2019-10-09 | 2020-11-10 | 界首市登田五金制品有限公司 | Clamping positioning mechanism for machining inner ring of ultra-miniature bearing |
| CN111215934A (en) * | 2020-02-21 | 2020-06-02 | 成都力中数控设备有限公司 | Clamping device and clamping method |
| CN111215934B (en) * | 2020-02-21 | 2022-01-28 | 成都力中数控设备有限公司 | Clamping device and clamping method |
| CN114211216A (en) * | 2021-12-17 | 2022-03-22 | 长春一东离合器股份有限公司 | Grabbing device after clutch assembly is accomplished |
| CN114393530A (en) * | 2022-02-09 | 2022-04-26 | 南京中拓科技有限公司 | Latch fixing mechanism of automobile safety belt |
| CN114393530B (en) * | 2022-02-09 | 2024-03-22 | 南京中拓科技有限公司 | Automobile safety belt mortise lock fixing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100331 Termination date: 20160416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |