CN202741777U - Double-headed core expansion type spindle clamp - Google Patents
Double-headed core expansion type spindle clamp Download PDFInfo
- Publication number
- CN202741777U CN202741777U CN 201220472371 CN201220472371U CN202741777U CN 202741777 U CN202741777 U CN 202741777U CN 201220472371 CN201220472371 CN 201220472371 CN 201220472371 U CN201220472371 U CN 201220472371U CN 202741777 U CN202741777 U CN 202741777U
- Authority
- CN
- China
- Prior art keywords
- expansion core
- core expansion
- spindle
- cone
- axial
- 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
Links
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 206010006514 bruxism Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Landscapes
- Gripping On Spindles (AREA)
Abstract
The utility model discloses a double-headed core expansion type spindle clamp, which consists of a spindle, a core expansion sleeve and a bolt pin, wherein the spindle is a cone shaft positioned through central holes at two ends; an axial groove is formed on a cone shaft section; the core expansion sleeve is in a thin-walled round tube shape, and two ends of the core expansion sleeve are respectively provided with conical holes which have large exterior and small interior and are matched with the cone shaft section of the spindle; 5-7 radial constant width axial grooves which penetrate through the hole wall are uniformly distributed around the conical hole wall; two ends of each axial groove are terminated in the radial through holes; and the spindle filled with the conical holes at two ends of the core expansion sleeve is axially limited by matching the bolt pin and the axial grooves. The spindle is propped against the tip, so that equivalent radial elastic deformation is synchronously generated at two ends of the core expansion sleeve, and the tolerance clearance between the core expansion sleeve and a workpiece is eliminated. The spindle clamp is reliably positioned at two ends and is high in precision and high in rigidity, good conditions are created for improving the machining precision, and the double-headed core expansion type spindle clamp is particularly suitable for positioning machined cylindrical gears, shaft sleeves and other parts through inner holes.
Description
Technical field
The utility model relates to a kind of mandrel class anchor clamps, and specifically, the utility model relates to a kind ofly locates mach dabber clamp with the hole.
Background technology
The rotation machine components usually with endoporus as reference for installation, the easy like this design basis effect consistent with positioning datum that reach realizes higher machined precision.Under the routine techniques equipment condition, the part of processing with the location, hole generally uses mandrel class anchor clamps, and the most frequently used mandrel class anchor clamps mainly contain tapering mandrel and expansion core formula mandrel two macrostructure patterns in the technology now.It is convenient that taper core axle construction is simple, making is easy, workpiece is installed.But inner hole of workpiece only cooperates the part with the tapering mandrel, and setoff installation easily occurs workpiece, and the workpiece axiality is relatively poor after the machined, and this type of dabber clamp only is fit to roughing.Expansion core formula mandrel utilizes built-in tapering mandrel to cooperate with ringfeder in clamping process and produces strain elimination fit clearance, to obtain reliable location.But the expansion core formula dabber clamp of prior art is longer because of ringfeder and workpiece length of fit, and quality of fit is affected by positional precision also except being subjected to the workpiece form accuracy affects, and the quality conformance after the workpiece processing is relatively poor.Particularly there is taper error in inner hole of workpiece, and its positioning accuracy does not reach expection.
The utility model content
The utility model is mainly for the expansion core formula core shaft structure defective of prior art, propose a kind of simple in structure, positioning accuracy is high, reliable clamping, work-handling are easy to double end expansion core formula dabber clamp.
The utility model is achieved through the following technical solutions technical goal.
Double end expansion core formula dabber clamp, it is comprised of mandrel, expansion core cover, spiral pin.Described mandrel is a kind of axis of cone with two ends centre bore location, and axis of cone section is provided with an axial notch.Its improvements are: described expansion core cover is the thin-wall circular tubulose, its cylindrical and inner hole of workpiece matched in clearance, two ends are respectively equipped with the little taper hole that matches with mandrel axis of cone section of outer imperial palace, uniform 5～7 the wide axial grooves that radially run through hole wall of ring cone-shaped wall, every the axial groove two ends terminate in radial direction through hole, and the mandrel of expansion core cover two ends taper hole plug dress is cooperated with axial notch by spiral pin makes axial limiting.
In the said structure, axial groove quantity uniform on the cone-shaped wall of expansion core cover two ends equates, measure-alike, the axial groove of the relative opposite side of axial groove of a side half body position of staggering arranges, axially groove width 1mm～3mm.
The utility model compared with prior art has following good effect:
1, the axis of cone and taper hole fit structure are simple, make easily;
2, expansion core cover two ends taper hole structural element is identical, and supporting mandrel pressurized makes expansion core cover two ends produce synchronously the radial elastic distortion of equivalent, and the workpiece two ends obtain the equivalent tensioner synchronously, and positioning accuracy is high;
3, expansion core cover two ends obtain the equivalent tensioner synchronously, and the fit clearance of elimination and workpiece improves the rigidity of workpiece on the installation site, avoid generator processing vibration, effectively improve the roughness that workpiece is processed.
Description of drawings
Fig. 1 is the utility model structural profile schematic diagram.
Fig. 2 is expansion core nested structure generalized section among Fig. 1.
Fig. 3 is core shaft structure schematic diagram among Fig. 1.
The specific embodiment
The below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Double end expansion core formula dabber clamp shown in Figure 1, it is comprised of mandrel 1, expansion core cover 2, spiral pin 3.Described mandrel 1 is a kind of axis of cone with two ends centre bore 1.2 location, and axis of cone section is provided with an axial notch 1.1.Described expansion core cover 2 is the main bodys in the utility model, be the thin-wall circular tubulose, its cylindrical and workpiece 4 endoporus matched in clearance, two ends are respectively equipped with the little taper hole that matches with mandrel 1 axis of cone section of outer imperial palace, uniform 5～7 the wide axial grooves 2.1 that radially run through hole wall of ring cone-shaped wall, every axial groove 2.1 two ends terminate in radial direction through hole 2.2, and the mandrel 1 that expansion core is overlapped 2 two ends taper hole plugs dress is cooperated with axial notch 1.1 by spiral pin 3 makes axial limiting.Present embodiment is used for roll flute processing, and the workpiece 4 that is sleeved on the expansion core cover 2 is straight spur gears, this outside diameter of gear φ 50mm, φ 28mm in the endoporus.Little because of workpiece 4 endoporus and excircle dimension, expansion core is overlapped on the 2 both sides cone-shaped walls respectively uniform 5 roads mutually the stagger axial groove 2.1 of half body position, the i.e. axial groove 2.1 alternate 72 of the same side
0, the axial groove 2.1 relative opposite sides of opposite side stagger 36
0Do 72
0Alternately, every axial groove 2.1 width unification is 1.5mm.During practical application, expansion core is overlapped 2 built-in mandrels 1 and is in loose shape, first expansion core cover 2 is placed in workpiece 4 endoporus, the centre bore 1.2 of mandrel 1 is lived on rear startup grinding machine hydraulic top in place pinnacle, the mandrel 1 relative expanding core retainer plate 2 of pressurized moves in doing axially, produce synchronously equivalent radial elastic distortion so that expansion core is overlapped 2 two ends, eliminate fit clearance with workpiece 4 with this.Workpiece 4 endoporus two ends obtain radially swelling and locating of equivalent synchronously, and this reliable, high, good rigidly of precision in location, structure two ends has been created a good condition for improving precision of grinding teeth and crudy.Use the utility model precision of grinding teeth and roughness all to improve one more than the grade than prior art, and crudy is stable.
Claims (3)
1. double end expansion core formula dabber clamp, it is comprised of mandrel (1), expansion core cover (2), spiral pin (3); Described mandrel (1) is a kind of axis of cone with two ends centre bore (1.2) location, and axis of cone section is provided with an axial notch (1.1); It is characterized in that: described expansion core cover (2) is the thin-wall circular tubulose, its cylindrical and workpiece (4) endoporus matched in clearance, two ends are respectively equipped with the little taper hole that matches with mandrel (1) axis of cone section of outer imperial palace, uniform 5～7 the wide axial grooves (2.1) that radially run through hole wall of ring cone-shaped wall, every axial groove (2.1) two ends terminate in radial direction through hole (2.2), and the mandrel (1) of expansion core cover (2) two ends taper hole plug dress is cooperated with axial notch (1.1) by spiral pin (3) makes axial limiting.
2. double end expansion core formula dabber clamp according to claim 1, it is characterized in that: on the cone-shaped wall of described expansion core cover (2) two ends uniform axial groove (2.1) quantity equate, measure-alike, the axial groove of a side (2.1) arranges the axial groove (2.1) of the opposite side half body position of staggering relatively.
3. double end expansion core formula dabber clamp according to claim 1 is characterized in that: uniform axial groove width 1mm on described expansion core cover (2) cone-shaped wall～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472371 CN202741777U (en) | 2012-09-17 | 2012-09-17 | Double-headed core expansion type spindle clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472371 CN202741777U (en) | 2012-09-17 | 2012-09-17 | Double-headed core expansion type spindle clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202741777U true CN202741777U (en) | 2013-02-20 |
Family
ID=47701225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220472371 Expired - Fee Related CN202741777U (en) | 2012-09-17 | 2012-09-17 | Double-headed core expansion type spindle clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202741777U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847969A (en) * | 2012-09-17 | 2013-01-02 | 江苏飞船股份有限公司 | Double-end core expansion type mandrel fixture |
| CN103894641A (en) * | 2014-04-16 | 2014-07-02 | 江西江铃底盘股份有限公司 | Outer-ejection-type inner expansion clamping sleeve |
| CN104708048A (en) * | 2013-12-12 | 2015-06-17 | 铜陵市永生机电制造有限责任公司 | Expansion core fastening device for turning outer circles of large pipes |
| CN106180783A (en) * | 2016-08-19 | 2016-12-07 | 青岛石大石仪科技有限责任公司 | Elongated thin metallic tubd processing mold and mould, metal tube processing method |
| CN107052872A (en) * | 2017-05-16 | 2017-08-18 | 重庆沃特尔粉末冶金有限公司 | Cutting tool and cutting method thereof |
| CN110102794A (en) * | 2019-05-17 | 2019-08-09 | 泰州润骐防务科技有限公司 | There are rise core fixture and its application method of gully workpiece for inner wall |
| CN111112954A (en) * | 2020-01-03 | 2020-05-08 | 中国船舶重工集团公司第七0七研究所 | Finish machining process method for inner cavity of floating drum of liquid floated gyroscope |
-
2012
- 2012-09-17 CN CN 201220472371 patent/CN202741777U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847969A (en) * | 2012-09-17 | 2013-01-02 | 江苏飞船股份有限公司 | Double-end core expansion type mandrel fixture |
| CN104708048A (en) * | 2013-12-12 | 2015-06-17 | 铜陵市永生机电制造有限责任公司 | Expansion core fastening device for turning outer circles of large pipes |
| CN103894641A (en) * | 2014-04-16 | 2014-07-02 | 江西江铃底盘股份有限公司 | Outer-ejection-type inner expansion clamping sleeve |
| CN106180783A (en) * | 2016-08-19 | 2016-12-07 | 青岛石大石仪科技有限责任公司 | Elongated thin metallic tubd processing mold and mould, metal tube processing method |
| CN107052872A (en) * | 2017-05-16 | 2017-08-18 | 重庆沃特尔粉末冶金有限公司 | Cutting tool and cutting method thereof |
| CN107052872B (en) * | 2017-05-16 | 2023-10-10 | 重庆沃特尔粉末冶金股份有限公司 | Cutting tool and cutting method thereof |
| CN110102794A (en) * | 2019-05-17 | 2019-08-09 | 泰州润骐防务科技有限公司 | There are rise core fixture and its application method of gully workpiece for inner wall |
| CN111112954A (en) * | 2020-01-03 | 2020-05-08 | 中国船舶重工集团公司第七0七研究所 | Finish machining process method for inner cavity of floating drum of liquid floated gyroscope |
| CN111112954B (en) * | 2020-01-03 | 2021-07-27 | 中国船舶重工集团公司第七0七研究所 | Finish machining process method for inner cavity of floating drum of liquid floated gyroscope |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202741777U (en) | Double-headed core expansion type spindle clamp | |
| CN102847969A (en) | Double-end core expansion type mandrel fixture | |
| CN103962598B (en) | The automatic expansion core fixture of thin-walled tube kind part | |
| CN203495272U (en) | Outer wall machining clamp for blind hole thin-wall sleeve parts | |
| CN103495755A (en) | Machining clamp for outer wall of blind-hole thin-wall sleeve part and using method thereof | |
| CN203380388U (en) | Adjustable expanding mandrel outer circle machining fixture | |
| CN203390235U (en) | Taper expansion mandrel | |
| CN206296482U (en) | A kind of thin-wall barrel clamp for machining | |
| CN102814519A (en) | Internal expansion tool for mechanical processing | |
| CN113458433A (en) | Clamping tool for processing external thread of large thin-wall cylinder | |
| CN204639184U (en) | Cylinder block turning centering is risen fixture | |
| CN103481097A (en) | Machining jig for thin-wall outer surfaces of piston cylinder barrels of automobiles | |
| CN102699718A (en) | Positioning fixture for drum-like part turning | |
| CN103639717A (en) | Turning tool for machining inner hole of thin-wall part | |
| CN202985325U (en) | Grinding tool for improving processing precision of deep long through hole | |
| CN103894641A (en) | Outer-ejection-type inner expansion clamping sleeve | |
| CN202147160U (en) | High-speed wire rod rolling mill eccentric bushing tool | |
| CN201211581Y (en) | Bevel gear shaft double-positioning supporting gear milling fixture | |
| CN107246856A (en) | A kind of expansible support inner chamber formula tubular elements positioner and localization method | |
| CN107363600A (en) | Bevel gear excircle finish turning fixture | |
| CN202667701U (en) | Inner expansion tool for machining | |
| CN203304606U (en) | Inner circle tensioning type mandrel fixture | |
| CN207548278U (en) | Bevel gear excircle finish turning fixture | |
| CN102950305A (en) | Swelling spindle device and method for turning grouped idler wheels | |
| CN207113829U (en) | A kind of expansible support inner chamber formula tubular elements positioner |
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: 20130220 Termination date: 20150917 |
|
| EXPY | Termination of patent right or utility model |