CN2642470Y - Quick change device with strong clamping force in electrical tools - Google Patents
Quick change device with strong clamping force in electrical tools Download PDFInfo
- Publication number
- CN2642470Y CN2642470Y CN 03206626 CN03206626U CN2642470Y CN 2642470 Y CN2642470 Y CN 2642470Y CN 03206626 CN03206626 CN 03206626 CN 03206626 U CN03206626 U CN 03206626U CN 2642470 Y CN2642470 Y CN 2642470Y
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- CN
- China
- Prior art keywords
- clamping force
- pneumatic
- flange
- axle sleeve
- superpower
- 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 provides a quick-change device, which is provided with a super-strong clamping force, in an electro-pneumatic tool. The quick-change device comprises a principal axis, a spring, an axial sleeve and several steel balls. A blind hole fit with a clamped object is provided at a front center of the principal axis, and a flange is equipped at an external section of the blind hole, which is a certain length away from a front end. Several sink holes, which are large externally and small internally and which are fit with the steel balls, are equipped at the principal axis and is a certain length away from the flange. An external shape of a rear section of the principal axis is fit with the electro-pneumatic tool. Staircases are provided at the axial sleeve externally. A thin axis is fit with an inner spring ring. An inner hole of the axial sleeve is taper-shaped, and is small at the thin-axis end and large at a thick-axis end. The spring is equipped between the flange and the axial sleeve. The device is provided with comprehensive advantages that clamping force the device is boosted, the device is convenient for disassembling and capable of self-locking, the leaping amount is reduced, and the device is easy for manufacture, and so on.
Description
Technical field
The utility model relates to the fast replacing device in a kind of pneumatic and electric tool, especially relates to the superpower fast replacing device of a kind of clamping force.
Background technology
In the existing electronic or pneumatic tool, especially the throw in these instruments for easy to use, generally all is provided with fast replacing device, its structure is that chuck is divided into three-jaw or four paws, utilizes chuck to clamp be installed thing (as: drill bit, emery wheel etc.) and manual locking.Its shortcoming is: clamping force is restricted, and especially after the wearing and tearing, clamping force is not enough, and the phenomenon that easily is thrown out of by the thing that is installed can appear in Shi Yong Time, brings danger to the operator; And clamping force is when strengthening, effort very again during dismounting; Jerk value is bigger than normal, and desire reduces jerk value, and requirement on machining accuracy improves, and cost strengthens.
Summary of the invention
The purpose of this utility model is to provide the fast replacing device that has superpower clamping force in a kind of pneumatic and electric tool at the deficiency of existing fast replacing device technology.
The purpose of this utility model realizes by following technical proposal: design the fast replacing device that has superpower clamping force in a kind of pneumatic and electric tool, it comprises: main shaft, spring, axle sleeve and some steel balls; The front central place of described main shaft is provided with and the blind hole that is cooperated by the thing that is installed, its outer distance front port certain-length is provided with flange, be provided with the little counterbore of some outer imperial palace that matches with described steel ball apart from the flange certain-length on the described main shaft, the rear appearance of described main shaft matches with pneumatic and electric tool; The profile of described axle sleeve is provided with step, and thin axle cooperates with described spring inner ring, and the endoporus of described axle sleeve is a bellmouth, and bellmouth is little at thin axle head, big at thick axle head; Described spring is arranged between flange and the axle sleeve.
In the such scheme, described some steel balls are 3 or 4.
In the such scheme, the taper angle of the endoporus of described axle sleeve is 2～5 °.
In the such scheme, described steel ball is uniform on circumference.
Fast replacing device with superpower clamping force of the present utility model has the following advantages compared with prior art:
1, clamping force increases, convenient disassembly; Push hard axle sleeve and move forward, spring is extruded, and the steel ball through hole on the main shaft of can coming in and going out tighten in the blind hole of the thing insertion alignment of shafts; Discharge thrust, spring reset promotes axle sleeve and moves backward, and the cone-shaped inner hole of axle sleeve is held by the chucking thing steel ball of the inside tightly, and clamping force increases 2-3 doubly, is difficult for deviating from during use; Tear open and unload Time, the promotion axle sleeve moves forward and gets final product.
2, has auto-lock function; When the thing that is installed was subjected to outside withdrawal force, steel ball was subjected to thrust backward, made axle sleeve desire mobile backward ， Ci Time clamping force and increased; And withdrawal force is bigger, and clamping force is bigger, makes the thing that is installed be difficult for deviating from more, is lockable.
3, jerk value reduces, and easily processing; Because clamping point moves backward, jerk value greatly reduces, and requirement on machining accuracy is not really high.
4, cost reduces; Because structural design is ingenious, requirement on machining accuracy can reduce, and compares with the instrument of external identical clamping force, and cost can reduce by 80%.
Below in conjunction with embodiment, further specify the utility model.
Description of drawings
Fig. 1 is the structural representation that has the fast replacing device of superpower clamping force in the pneumatic and electric tool;
Fig. 2 is the structural representation of main shaft among Fig. 1;
Fig. 3 is the cutaway view of Fig. 1 bottom bracket axle.
The specific embodiment
Fig. 1 to Fig. 3 illustrates the structure with fast replacing device most preferred embodiment of superpower clamping force of the present utility model.Referring to figs. 1 through Fig. 3, fast replacing device of the present utility model comprises: main shaft 1, spring 2, axle sleeve 3 and 3 steel balls 4; The front central place of main shaft 1 is provided with and the blind hole 11 that is cooperated by the thing 5 that is installed, its outer distance front port certain-length is provided with flange 12, be provided with the little counterbore 13 of 3 outer imperial palaces that matches with described steel ball 4 apart from flange 12 certain-lengths on the main shaft 1, rear portion 14 profiles of main shaft 1 match with pneumatic and electric tool; The profile of axle sleeve 3 is provided with step 31, and thin axle cooperates with the inner ring of spring 2, and the endoporus 32 of axle sleeve 3 is bellmouths, and bellmouth is little at thin axle head, big at thick axle head; Spring 2 is arranged between flange 12 and the axle sleeve 3.
Described steel ball 4 can be 3 or 4; Steel ball 4 can be uniform on circumference; Steel ball 4 can be uniform on same circumference.
The conicity angles alpha of the endoporus 32 of described axle sleeve 3 is 2～5 °, best results.
Claims (5)
1, the fast replacing device that has superpower clamping force in a kind of pneumatic and electric tool, it is characterized in that: it comprises: main shaft, spring, axle sleeve and some steel balls; The front central place of described main shaft is provided with and the blind hole that is cooperated by the thing that is installed, its outer distance front port certain-length is provided with flange, be provided with the little counterbore of some outer imperial palace that matches with described steel ball apart from the flange certain-length on the described main shaft, the rear appearance of described main shaft matches with pneumatic and electric tool; The profile of described axle sleeve is provided with step, and thin axle cooperates with described spring inner ring, and the endoporus of described axle sleeve is a bellmouth, and bellmouth is little at thin axle head, big at thick axle head; Described spring is arranged between flange and the axle sleeve.
2, the fast replacing device that has superpower clamping force in the pneumatic and electric tool according to claim 1 is characterized in that: described some steel balls are 3 or 4.
3, the fast replacing device that has superpower clamping force in the pneumatic and electric tool according to claim 1 is characterized in that: the taper angle of the endoporus of described axle sleeve is 2～5 °.
4, according to the fast replacing device that has superpower clamping force in claim 1, the 2 or 3 described pneumatic and electric tools, it is characterized in that: described steel ball is uniform on circumference.
5, the fast replacing device that has superpower clamping force in the pneumatic and electric tool according to claim 4, it is characterized in that: described steel ball is uniform on same circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03206626 CN2642470Y (en) | 2003-07-29 | 2003-07-29 | Quick change device with strong clamping force in electrical tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03206626 CN2642470Y (en) | 2003-07-29 | 2003-07-29 | Quick change device with strong clamping force in electrical tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2642470Y true CN2642470Y (en) | 2004-09-22 |
Family
ID=34288121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03206626 Expired - Fee Related CN2642470Y (en) | 2003-07-29 | 2003-07-29 | Quick change device with strong clamping force in electrical tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2642470Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7510465B2 (en) | 2005-11-18 | 2009-03-31 | Eastway Fair Company Limited | Sand pad lock for sander |
| CN103538033A (en) * | 2012-07-10 | 2014-01-29 | 苏州宝时得电动工具有限公司 | Holding device |
| CN107571284A (en) * | 2016-07-28 | 2018-01-12 | 珠海智新自动化科技有限公司 | A kind of flexible clamping jaw fast replacing device |
| CN112720104A (en) * | 2020-12-25 | 2021-04-30 | 重庆江增船舶重工有限公司 | Quantitative clamping machining method for excircle grinding of supercharger shaft sleeve |
-
2003
- 2003-07-29 CN CN 03206626 patent/CN2642470Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7510465B2 (en) | 2005-11-18 | 2009-03-31 | Eastway Fair Company Limited | Sand pad lock for sander |
| CN103538033A (en) * | 2012-07-10 | 2014-01-29 | 苏州宝时得电动工具有限公司 | Holding device |
| CN103538033B (en) * | 2012-07-10 | 2015-12-16 | 苏州宝时得电动工具有限公司 | Clamping device |
| CN107571284A (en) * | 2016-07-28 | 2018-01-12 | 珠海智新自动化科技有限公司 | A kind of flexible clamping jaw fast replacing device |
| CN112720104A (en) * | 2020-12-25 | 2021-04-30 | 重庆江增船舶重工有限公司 | Quantitative clamping machining method for excircle grinding of supercharger shaft sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |