CN204248006U - Workpiece internal expanding chuck - Google Patents
Workpiece internal expanding chuck Download PDFInfo
- Publication number
- CN204248006U CN204248006U CN201420742495.0U CN201420742495U CN204248006U CN 204248006 U CN204248006 U CN 204248006U CN 201420742495 U CN201420742495 U CN 201420742495U CN 204248006 U CN204248006 U CN 204248006U
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- CN
- China
- Prior art keywords
- mounting flange
- push
- face
- connecting rod
- pull
- 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
Workpiece internal expanding chuck, belongs to machining equipment part device.The utility model comprises mounting flange, mounting flange, master jaw, pull bar, the connection swivel nut of push-and-pull connecting rod and cylinder lever connecting rod and push-and-pull connecting rod, master jaw comprises collar part, cylinder axis extending portion and at least three elastic claws, master jaw is posted by the fixed installation of mounting flange front end face with collar part rear end face, cylinder axis extending portion stretches into the cylindrical groove of mounting flange, elastic claw circumference is arranged at intervals on front side of collar part, elastic claw front end surrounds the periphery as workpiece radial support face and the axial shoulder end face as workpiece axial locating surface, the inner cavity surface of pull bar front end periphery and elastic claw front end is the mutually corresponding conical surface, the rear end of push-and-pull connecting rod is connected with oil cylinder piston, composition entrance is positioned at push-and-pull connecting rod rear end, outlet is positioned at the mutually through air duct of the axial shoulder end face on elastic claw.The utility model solves the defect of existing workpiece internal expanding chuck structure relative complex.
Description
Technical field
The utility model belongs to machining equipment part device, especially relevant with a kind of workpiece internal expanding chuck for lathe.
Background technology
Tradition internal expanding chuck mainly comprises the air inlet cover of hollow, chuck seat, base of the carrier head, collet and support set and be threaded onto air inlet cover, chuck seat, the push-and-pull rod member of base of the carrier head and collet hollow cavity, support set is fixedly installed in base of the carrier head front end, collet is fixedly connected with base of the carrier head screw thread through support set inner chamber, air inlet cover is fixedly installed in main spindle box, push-and-pull rod member comprises pull bar, the connection swivel nut of push-and-pull connecting rod and cylinder lever connecting rod and push-and-pull connecting rod, the inner cavity surface of pull bar front end periphery and collet is the mutually corresponding conical surface, the conical surface is pressed by moving axially of pull bar and unclamps, realize the outer of collet rise and restore contraction, thus clamp or unclamp workpiece, chuck seat, base of the carrier head and support set are provided with the elongated slot interconnected, for carrying out Workpiece clamping detection and localization by compressed air.Such chuck structure relative complex, processing cost is relatively high, and air inlet pipe is positioned at processing district, lathe front, need take the confined space, also easily be damaged.
Utility model content
The purpose of this utility model is intended to the defect overcoming existing workpiece internal expanding chuck structure relative complex, provides one can realize the relatively simple workpiece internal expanding chuck of clamping workpiece detection and localization, structure.
For this reason, the utility model is by the following technical solutions: workpiece internal expanding chuck, comprise hollow mounting flange and push-and-pull rod member, mounting flange rear end face is as the benchmark be connected and installed with front-end of spindle, push-and-pull rod member comprises pull bar, the connection swivel nut of push-and-pull connecting rod and cylinder lever connecting rod and push-and-pull connecting rod, it is characterized in that, described workpiece internal expanding chuck also comprises mounting flange and the master jaw of hollow, mounting flange rear end face and mounting flange front end face recline and install, mounting flange front end face center arranges cylindrical groove, at least three elastic claws that master jaw comprises pedestal and is connected as a single entity with pedestal, pedestal comprises collar part and is positioned at the cylinder axis extending portion on rear side of collar part, master jaw is posted by the fixed installation of described mounting flange front end face with collar part rear end face, cylinder axis extending portion stretches into described cylindrical groove, elastic claw circumference is arranged at intervals on front side of collar part, elastic claw front end surrounds the periphery as workpiece radial support face and the axial shoulder end face as workpiece axial locating surface, described push-and-pull rod member is threaded onto mounting flange, the hollow cavity of mounting flange and master jaw, described pull bar front end periphery and the inner cavity surface of elastic claw front end are the mutually corresponding conical surface, the rear end of push-and-pull connecting rod is connected with oil cylinder piston, push-and-pull rod member is provided to move axially power by oil cylinder, the conical surface is pressed by moving axially of pull bar and unclamps, realize rise outside elastic claw clamping workpiece or the contraction that resets, push-and-pull connecting rod, mounting flange, mounting flange with master jaw is arranged respectively the through hole be connected successively, composition entrance is positioned at push-and-pull connecting rod rear end, outlet is positioned at the mutually through air duct of the described axial shoulder end face on elastic claw.Pressure air is passed in air duct, during clamping workpiece, if Set and Positioning is accurate, workpiece end face will abut on the axial shoulder end face of elastic claw, block air channel outlet, then the air pressure in air duct can raise, if the air pressure in air duct does not change, then illustrate that workpiece end face is not close on axial shoulder end face, Set and Positioning is inaccurate.
As to technique scheme supplement and perfect, the utility model also comprises following technical characteristic.
Each through hole junction forming described air duct is all provided with sealing ring, ensures the sealing of air duct.
Through hole on described push-and-pull connecting rod comprises the axial hole of through rear end face and the radial hole of this axial hole through and periphery.
The import of the through hole on described mounting flange is positioned on internal chamber wall, the internal chamber wall of through hole import both sides is provided with 360 degree of groove rings around mounting flange center line, what groove ring width was not less than described push-and-pull connecting rod moves axially distance, radial hole aperture on described push-and-pull connecting rod is communicated with groove ring, ensures that push-and-pull connecting rod Mobile Space-time gas passage is through all the time.
The through hole described master jaw forming described air duct has 3, and the through hole corresponding described mounting flange, mounting flange forming described air duct has 3.
Use the utility model can reach following beneficial effect: 1, by at push-and-pull connecting rod, mounting flange, mounting flange, master jaw is provided with the through hole composition entrance connected successively and is positioned at push-and-pull connecting rod rear end, outlet is positioned at the mutually through air duct of the described axial shoulder end face on elastic claw, hermetic seal principle is used to achieve the function of clamping workpiece detection and localization, avoid when clamping workpiece is located inaccurate still in processing, cause scrapping of workpiece, save processing cost, and air pipe line is positioned on rear side of lathe, avoid processing district, avoid pipeline to sustain damage, 2, the master jaw by using elastic claw and pedestal to be connected as a single entity, structure is simple.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is the enlarged drawing at a place in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.
As depicted in figs. 1 and 2, as depicted in figs. 1 and 2, the utility model comprises hollow mounting flange 2, push-and-pull rod member, the mounting flange 3 of hollow and master jaw, the benchmark that the rear end face of mounting flange 2 is connected and installed as the front end with main shaft 1, push-and-pull rod member comprises pull bar 6, the connection swivel nut of push-and-pull connecting rod 8 and cylinder lever connecting rod 6 and push-and-pull connecting rod 8, the rear end face of mounting flange 3 and the front end face of mounting flange 2 recline and install, the front end face center of mounting flange 3 arranges cylindrical groove, at least three elastic claws 4 that master jaw comprises pedestal and is connected as a single entity with pedestal, pedestal comprises collar part 7 and is positioned at the cylinder axis extending portion of rear side of collar part 7, master jaw is posted by the front end face fixed installation of described mounting flange 3 with the rear end face of collar part 7, cylinder axis extending portion stretches into described cylindrical groove, elastic claw 4 circumference is arranged at intervals at the front side of collar part 7, the front end of elastic claw 4 surrounds the axial shoulder end face of the periphery as the radial support face of workpiece 5 and the axial locating surface as workpiece 5, described push-and-pull rod member is threaded onto mounting flange 2, the hollow cavity of mounting flange 3 and master jaw, the inner cavity surface of the front end periphery of described pull bar 6 and the front end of elastic claw 4 is the mutually corresponding conical surface, the rear end of push-and-pull connecting rod 8 is connected with oil cylinder piston, push-and-pull rod member is provided to move axially power by oil cylinder, the conical surface is pressed by moving axially of pull bar 6 and unclamps, realize rise outside elastic claw 4 clamping workpiece 5 or the contraction that resets, push-and-pull connecting rod 8, mounting flange 2, mounting flange 3 with master jaw is arranged respectively the through hole be connected successively, the through hole described master jaw forming described air duct has 3, corresponding described mounting flange 3, through hole mounting flange 2 forming described air duct has 3, composition entrance is positioned at the rear end of push-and-pull connecting rod 8, outlet is positioned at 3 mutually through air ducts of the described axial shoulder end face on elastic claw 4, each through hole junction forming described air duct is all provided with sealing ring, ensure the sealing of air duct, through hole on described push-and-pull connecting rod 8 comprises the axial hole of through rear end face and the radial hole of this axial hole through and periphery, the import of the through hole on described mounting flange 2 is positioned on internal chamber wall, the internal chamber wall of through hole import both sides is provided with 360 degree of groove rings 9 around the center line of mounting flange 2, what the width of groove ring 9 was not less than described push-and-pull connecting rod 8 moves axially distance, radial hole aperture on described push-and-pull connecting rod 8 is communicated with groove ring 9, ensure that push-and-pull connecting rod 8 Mobile Space-time gas passage is through all the time.Pressure air is passed in air duct, during clamping workpiece 5, if Set and Positioning is accurate, the end face of workpiece 5 will abut on the axial shoulder end face of elastic claw 4, block air channel outlet, then the air pressure in air duct can raise, if the air pressure in air duct does not change, then illustrate that the end face of workpiece 5 is not close on axial shoulder end face, Set and Positioning is inaccurate.
Claims (5)
1. workpiece internal expanding chuck, comprise hollow mounting flange and push-and-pull rod member, mounting flange rear end face is as the benchmark be connected and installed with front-end of spindle, push-and-pull rod member comprises pull bar, the connection swivel nut of push-and-pull connecting rod and cylinder lever connecting rod and push-and-pull connecting rod, it is characterized in that: described workpiece internal expanding chuck also comprises mounting flange and the master jaw of hollow, mounting flange rear end face and mounting flange front end face recline and install, mounting flange front end face center arranges cylindrical groove, at least three elastic claws that master jaw comprises pedestal and is connected as a single entity with pedestal, pedestal comprises collar part and is positioned at the cylinder axis extending portion on rear side of collar part, master jaw is posted by the fixed installation of described mounting flange front end face with collar part rear end face, cylinder axis extending portion stretches into described cylindrical groove, elastic claw circumference is arranged at intervals on front side of collar part, elastic claw front end surrounds the periphery as workpiece radial support face and the axial shoulder end face as workpiece axial locating surface, described push-and-pull rod member is threaded onto mounting flange, the hollow cavity of mounting flange and master jaw, described pull bar front end periphery and the inner cavity surface of elastic claw front end are the mutually corresponding conical surface, the rear end of push-and-pull connecting rod is connected with oil cylinder piston, push-and-pull rod member is provided to move axially power by oil cylinder, push-and-pull connecting rod, mounting flange, mounting flange with master jaw is arranged respectively the through hole be connected successively, composition entrance is positioned at push-and-pull connecting rod rear end, outlet is positioned at the mutually through air duct of the described axial shoulder end face on elastic claw.
2. workpiece internal expanding chuck according to claim 1, is characterized in that: each through hole junction forming described air duct is all provided with sealing ring.
3. workpiece internal expanding chuck according to claim 2, is characterized in that: the through hole on described push-and-pull connecting rod comprises the axial hole of through rear end face and the radial hole of this axial hole through and periphery.
4. workpiece internal expanding chuck according to claim 3, it is characterized in that: the import of the through hole on described mounting flange is positioned on internal chamber wall, the internal chamber wall of through hole import both sides is provided with 360 degree of groove rings around mounting flange center line, what groove ring width was not less than described push-and-pull connecting rod moves axially distance, and the radial hole aperture on described push-and-pull connecting rod is communicated with groove ring.
5. workpiece internal expanding chuck according to claim 4, it is characterized in that: the through hole described master jaw forming described air duct has 3, the through hole corresponding described mounting flange, mounting flange forming described air duct has 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742495.0U CN204248006U (en) | 2014-12-01 | 2014-12-01 | Workpiece internal expanding chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742495.0U CN204248006U (en) | 2014-12-01 | 2014-12-01 | Workpiece internal expanding chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204248006U true CN204248006U (en) | 2015-04-08 |
Family
ID=52952361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420742495.0U Expired - Fee Related CN204248006U (en) | 2014-12-01 | 2014-12-01 | Workpiece internal expanding chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204248006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271871A (en) * | 2016-08-30 | 2017-01-04 | 津上精密机床（浙江）有限公司 | Blowing structure in machine tool chief axis |
| CN109141760A (en) * | 2018-11-01 | 2019-01-04 | 金华华鼎科技有限公司 | Hydrostatic testing machine |
-
2014
- 2014-12-01 CN CN201420742495.0U patent/CN204248006U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271871A (en) * | 2016-08-30 | 2017-01-04 | 津上精密机床（浙江）有限公司 | Blowing structure in machine tool chief axis |
| CN106271871B (en) * | 2016-08-30 | 2018-02-09 | 津上精密机床（浙江）有限公司 | Blowing structure in machine tool chief axis |
| CN109141760A (en) * | 2018-11-01 | 2019-01-04 | 金华华鼎科技有限公司 | Hydrostatic testing machine |
| CN109141760B (en) * | 2018-11-01 | 2024-05-28 | 三江开源有限公司 | Hydrostatic testing machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20201201 |