CN203316759U - High-precision self-centering chuck - Google Patents
High-precision self-centering chuck Download PDFInfo
- Publication number
- CN203316759U CN203316759U CN2013202431474U CN201320243147U CN203316759U CN 203316759 U CN203316759 U CN 203316759U CN 2013202431474 U CN2013202431474 U CN 2013202431474U CN 201320243147 U CN201320243147 U CN 201320243147U CN 203316759 U CN203316759 U CN 203316759U
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- CN
- China
- Prior art keywords
- gear wheel
- bevel gear
- chuck
- screw thread
- thread dish
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model discloses a high-precision self-centering chuck. The high-precision self-centering chuck comprises a chuck body, a bevel pinion, a bevel gear wheel and a chuck jaw. The bevel gear wheel is arranged in the chuck body, and the bevel pinion is matched with the bevel gear wheel. The side of the inner end face of the bevel gear wheel is provided with a thread plate which is formed by splicing more than two parts. The thread plate is in an annular shape, the outer side face of the thread plate is provided with a plane thread, a key groove is formed in the back face of each part of the thread plate and is matched with the bevel gear wheel through a key, the parts of the thread plate can respectively and slightly move in the direction of the corresponding key grooves, and a thread on the chuck jaw is matched with the plane thread. In the process of clamping, the matching clearance is zero, and the precision of the chuck is greatly improved.
Description
Technical field
The utility model belongs to the machining equipment technical field, is specifically related to the high accuracy self-centering chuck that a kind of lathe is used.
Background technology
At present, in lathe the self-centering chuck of holding workpiece by chuck body, bevel pinion, bevel gear wheel, the compositions such as chuck jaw.Insert the keyhole of bevel pinion with key, rotate bevel pinion, bevel pinion drives bevel gear wheel to rotate, and at the back side of bevel gear wheel, is processed with flat thread, flat thread drive chuck pawl moves radially along the radial slot on chuck body, realizes the purpose of clamping work pieces.Because bevel gear wheel need to rotate in chuck body, therefore between bevel gear wheel and chuck body, radial clearance must be arranged.And this gap is along with the increase meeting of service time is increasing.Therefore, due to the existence in gap, during clamping, bevel gear wheel position in chuck body is unfixing, centering error is larger.
Summary of the invention
The above-mentioned defect existed for solving prior art, it is a kind of simple in structure that the purpose of this utility model is to provide, the self-centering chuck that centering precision is high.
For achieving the above object, the technical solution adopted in the utility model is: this high accuracy self-centering chuck, there is chuck body, bevel pinion, bevel gear wheel and chuck jaw, described bevel gear wheel is located in chuck body, bevel pinion coordinates with bevel gear wheel, it is characterized in that: the inner face side of described bevel gear wheel is provided with the screw thread dish, described screw thread dish is put together by plural polylith, be circular, the lateral surface of screw thread dish has flat thread, the back side of every part of described screw thread dish is provided with keyway, described keyway coordinates with bevel gear wheel by key respectively, the each several part that forms the screw thread dish respectively can be mobile along keyway direction trace, screw thread on described chuck jaw coordinates with flat thread.
The interface of described screw thread dish amalgamation is tilting interface.
Described keyway is the radial direction setting.
Adopt the beneficial effect of technique scheme: the self-centering principle of this high accuracy self-centering chuck was felt relieved by screw thread dish and coordinating of chuck body endoporus, because the screw thread dish is two halves or the most formula structures more than two halves, it respectively can be mobile along keyway direction trace, when the chuck jaw clamping work pieces, flat thread counter motion under counter-force effect when clamping, be close to the chuck body inwall, eliminate gap, reach the purpose of high centering precision.Rotate with the key actuated bevel pinion during use, drive the bevel gear wheel rotation, bevel gear wheel drives screw thread dish synchronous rotary by key, and the flat thread drive chuck pawl on the screw thread dish moves radially along the radial slot on chuck body, realizes the clamping work pieces purpose.Centering precision of the present utility model can reach in 0.03mm, and obviously extend service life, simple in structure, and cost is low.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
The structural representation that Fig. 2 is 3 half formula screw thread dishes in the utility model.
The specific embodiment
High accuracy self-centering chuck as shown in Figure 1.By bevel pinion 1, chuck jaw 2, chuck body 3, bevel gear wheel 4, key 5, screw thread dish 6 forms.Described bevel gear wheel 4 is located in chuck body 3, and bevel pinion 1 coordinates with bevel gear wheel 4, for driving bevel gear wheel 4, rotates, and the annular that screw thread dish 6 is spliced by polylith, can be two halves formula structure, can be also 3 half formula structures or more polylith form.The screw thread dish of three block structures as shown in Figure 2, have first 6.1, second portion 6.2 and third part 6.3, and this three part pieces together the screw thread dish 6 of a hollow, and the interface 6.5 of described screw thread dish amalgamation is tilting interface.Screw thread dish 6 is sleeved in chuck body 3, and be positioned at the side of bevel gear wheel 4, the lateral surface of screw thread dish 6 has flat thread, the back side of every part of described screw thread dish is provided with radially keyway 6.4, described radially keyway coordinates with bevel gear wheel 4 by key 5 respectively, the each several part of screw thread dish respectively can be mobile along keyway direction trace, and the screw thread on described chuck jaw 2 coordinates with flat thread.
Rotate with key actuated bevel pinion 1, drive bevel gear wheel 4 rotations, the flat thread synchronous rotary that bevel gear wheel 4 drives on screw thread dish 6 by key 5, flat thread drive chuck pawl 2 moves radially along the radial slot on chuck body 3, realizes the clamping work pieces purpose.When clamping, form three parts counter motion under the counter-force effect of screw thread dish 6, be close to chuck body 3 inwalls, eliminate gap, reach the purpose of high centering precision.
Claims (3)
1. a high accuracy self-centering chuck, there is chuck body, bevel pinion, bevel gear wheel and chuck jaw, described bevel gear wheel is located in chuck body, bevel pinion coordinates with bevel gear wheel, it is characterized in that: the inner face side of described bevel gear wheel is provided with the screw thread dish, described screw thread dish is put together by plural polylith, be circular, the lateral surface of screw thread dish has flat thread, the back side of every part of described screw thread dish is provided with keyway, described keyway coordinates with bevel gear wheel by key respectively, the each several part that forms the screw thread dish respectively can be mobile along keyway direction trace, screw thread on described chuck jaw coordinates with flat thread.
2. high accuracy self-centering chuck according to claim 1, it is characterized in that: the interface of described screw thread dish amalgamation is tilting interface.
3. high accuracy self-centering chuck according to claim 1, it is characterized in that: described keyway is the radial direction setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202431474U CN203316759U (en) | 2013-05-08 | 2013-05-08 | High-precision self-centering chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202431474U CN203316759U (en) | 2013-05-08 | 2013-05-08 | High-precision self-centering chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203316759U true CN203316759U (en) | 2013-12-04 |
Family
ID=49656156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202431474U Expired - Lifetime CN203316759U (en) | 2013-05-08 | 2013-05-08 | High-precision self-centering chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203316759U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286336A (en) * | 2013-05-08 | 2013-09-11 | 左进保 | High-precision self-centering chuck |
| CN104289735A (en) * | 2014-09-27 | 2015-01-21 | 江苏恒泽安装工程股份有限公司 | Three-jaw chuck for self-centering numerical control tube intersecting cutting machine |
| CN106112040A (en) * | 2016-06-17 | 2016-11-16 | 上海锐铎自动化有限公司 | Electrically chuck |
| CN115338799A (en) * | 2022-09-02 | 2022-11-15 | 常州大学 | Mechanical clamping jaw device for mechanically manufacturing fixed mechanical clamp for machining |
-
2013
- 2013-05-08 CN CN2013202431474U patent/CN203316759U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286336A (en) * | 2013-05-08 | 2013-09-11 | 左进保 | High-precision self-centering chuck |
| CN103286336B (en) * | 2013-05-08 | 2016-03-16 | 左进保 | High accuracy self-centering chuck |
| CN104289735A (en) * | 2014-09-27 | 2015-01-21 | 江苏恒泽安装工程股份有限公司 | Three-jaw chuck for self-centering numerical control tube intersecting cutting machine |
| CN106112040A (en) * | 2016-06-17 | 2016-11-16 | 上海锐铎自动化有限公司 | Electrically chuck |
| CN106112040B (en) * | 2016-06-17 | 2018-08-03 | 上海锐铎自动化有限公司 | Electrical chuck |
| CN115338799A (en) * | 2022-09-02 | 2022-11-15 | 常州大学 | Mechanical clamping jaw device for mechanically manufacturing fixed mechanical clamp for machining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131204 Effective date of abandoning: 20160316 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |