CN203221217U - Wedge-shaped power chuck - Google Patents
Wedge-shaped power chuck Download PDFInfo
- Publication number
- CN203221217U CN203221217U CN 201320278515 CN201320278515U CN203221217U CN 203221217 U CN203221217 U CN 203221217U CN 201320278515 CN201320278515 CN 201320278515 CN 201320278515 U CN201320278515 U CN 201320278515U CN 203221217 U CN203221217 U CN 203221217U
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- pawl
- chuck
- disk body
- basic
- wedge
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Abstract
A wedge-shaped power chuck comprises a chuck body, a basic jaw, a wedge sleeve, a T-type block and a top jaw. The basic jaw is cylindrical, and one end of the basic jaw is provided with a wedge-shaped table. Two or more cylindrical cavities matched with the basic jaw are evenly distributed on the circumference of the chuck body in the radial direction of the chuck body. The basic jaw is provided with a T-type groove used for holding the T-type block. The surface of the basic jaw is provided with combing teeth matched with combing teeth of the bottom face of the top jaw. A rotation preventing structure is arranged between the chuck body and one of or both of the top jaw and the basic jaw. Due to the fact that the basic jaw is manufactured to be cylindrical, and the cylindrical cavities matched with the basic jaw are formed in the chuck body, friction resistance of the basic jaw is smaller when the basic jaw slides in the cylindrical cavities, and abrasion of the basic jaw and the chuck body is reduced. Therefore, clamping reliability of the power chuck during long-time use is improved, the frequency of daily maintenance is reduced, service life is prolonged, automatic centering and clamping precision of the chuck is improved, and machining precision of workpieces is improved.
Description
[technical field]
The present invention relates to a kind of wedge type power chuck, belong to the self-centering chuck field on the lathe.
[background technology]
The power chuck that links together with spindle end on Digit Control Machine Tool at present generally adopts wedge type power chuck, its basic functional principle is: under the effect of external axial force, by the lozenges between basic pawl and the wedge-catch system, the axially-movable of wedge-catch system is converted into the radial motion of basic pawl, clamps and loose purpose of unloading workpiece thereby reach.Its industry standard is referring to GB JB/T3860; The cross section of the basic pawl of current this wedge type power chuck generally is T-shape, its locate mode that radially slides is: two mutual vertical planes by itself being parallel to radial direction and chuck disk body spigot surface cooperatively interact and realize, no matter this mutual vertical plane still is the chuck disk body for basic pawl, in the process of making them, be difficult for improving simultaneously their accuracy of form and position and dimensional accuracy, cause existing between chuck disk body and the basic pawl fit clearance to a certain degree, this also is one of difficult major reason that improves of self-centering clamping precision of current wedge type power chuck, thereby has influenced the machining accuracy of workpiece.
[summary of the invention]
The objective of the invention is to be to overcome the deficiencies in the prior art, a kind of more reasonable structure, longer service life and the higher wedge type power chuck of self-centering clamping precision are provided.
In order to solve the technical problem of above-mentioned existence, the present invention adopts following technical proposals:
A kind of wedge type power chuck includes chuck disk body, basic pawl, wedge-catch system, T type piece and top pawl, it is characterized in that, this base pawl is cylindrical, is provided with the wedge shape platform that the wedged hole with wedge-catch system matches at it near the end at chuck disk body center; Be evenly equipped with two or more cylindrical cavities along chuck disk body radial direction at chuck disk body circumference, it matches with columniform basic pawl; Have to settle the T type groove of T type piece at this base pawl; Have the broach that matches with the broach of pawl bottom surface, top on the surface of the T of basic pawl type groove both sides; Be provided with the anti-rotation structure that anti-columniform basic pawl rotates between in chuck disk body and top pawl and basic pawl one or two in the cylindrical cavity of chuck disk body.
In the improvement project to above-mentioned wedge type power chuck, described anti-rotation structure is that two covers are arranged, and wherein a cover is out that it communicates with cylindrical cavity, can drop in this square groove under this top pawl at the square groove of the opening part of the cylindrical cavity of chuck disk body; Another set of employing square cushion block, in the described basic pawl arc outer rim of pruning, have the square groove of this arc outer rim of subtend at the chamber wall of the cylindrical cavity of chuck disk body, the space that the arc outer rim that this is pruned and square groove surround just holds this square cushion block.
In the improvement project to above-mentioned wedge type power chuck, described anti-rotation structure is out the square groove at the opening part of the cylindrical cavity of chuck disk body, and it communicates with cylindrical cavity; Can drop in this square groove under this top pawl.
In the improvement project to above-mentioned wedge type power chuck, described anti-rotation structure adopts square cushion block, in the described basic pawl arc outer rim of pruning, have the square groove of this arc outer rim of subtend at the chamber wall of the cylindrical cavity of chuck disk body, the space that the arc outer rim that this is pruned and square groove surround just holds this square cushion block.
Compared with prior art, the invention has the beneficial effects as follows: because it has overcome for a long time, the inertia set pattern that people make basic pawl T-shape and correspondingly leave the T-shape groove at disk body traditionally when production wedge shape power chuck, proposed that completely newly basic pawl made cylindrical shape and left the technical pattern of the cylindrical cavity that matches with basic pawl at the chuck disk body, frictional resistance when basic pawl is slided in cylindrical cavity is littler, reduce the wearing and tearing of basic pawl and chuck disk body, thereby prolonged the reliability of long-term use power chuck clamping, also just reduced the frequency of regular maintenance and the service life of having improved whole power chuck; In addition, when the cylindrical cavity of processing chuck disk body and cylindrical basic pawl, can obtain the higher accuracy of manufacture (can reach micron order), thereby can improve the self-centering clamping precision of chuck, to improve the machining accuracy to workpiece.
The present invention is described in further detail below in conjunction with accompanying drawing and the specific embodiment:
[description of drawings]
Fig. 1 is the assembling schematic diagram of the embodiment of the invention;
Fig. 2 is the front view of the embodiment of the invention;
Fig. 3 is the left view (revolve and turn 90 degrees) of Fig. 2;
Fig. 4 is that the A-A of Fig. 2 is to cutaway view.
[specific embodiment]
A kind of wedge type power chuck, shown in Fig. 1 to 4, include chuck disk body 1, basic pawl 2, wedge-catch system 3, T type piece 4 and top pawl 5, at this, this base pawl 2 is cylindrical, be provided with the wedge shape platform 21 that the wedged hole 31 with wedge-catch system 3 matches at it near the end at chuck disk body 1 center, the wedged hole 31 of wedge-catch system 3 laterally packs into the wedge shape platform 21 of basic pawl 2, its cross section is T-shape, its vertical edge both sides are wedge shape inclined-planes, realize that by wedge-like engagement wedge-catch system can drive basic pawl 2 and radially slide when endwisely slipping; Uniform two or more cylindrical cavities 11 along chuck disk body 1 radial direction on chuck disk body 1 circumference, it matches with columniform basic pawl 2; At this base pawl 2(in its that side near the watch face of chuck disk body 1) have to settle the T type groove 22 of T type piece 4, T type piece 4 is axially packed in the T type groove 22 of basic pawl; Have the broach 23 that matches with the broach 51 of top pawl 5 bottom surfaces on the surface of the T of basic pawl 2 type groove 22 both sides, skid between top pawl 5, the basic pawl 2 preventing; Be provided with the anti-rotation structure of rotation in the anti-cylindrical cavity 11 of columniform basic pawl 2 at chuck disk body 1 between in chuck disk body 1 and top pawl 5 and basic pawl 2 one or two.
When assembling, the cylindrical cavity 11 that cylindrical basic pawl 2 is aimed at chuck disk body 1 inserts, then after in the T type groove 22 of the basic pawl 2 of T type piece 4 insertions, with screw 7 it is fixedlyed connected with top pawl 5 again, middle surperficial 41 of T type piece 4 is adjacent in the inner surface 221 of T type groove 22, thereby basic pawl 2, T type piece 4 and top pawl 5 are fixed together; And then wedge shape platform 21 and part that the wedged hole 31 of wedge-catch system 3 is aimed at basic pawl 2 be inserted in.
Power chuck is when work, the axial force that acts on wedge-catch system 3 by wedge-catch system 3 wedged hole 31 and the mating reaction between the wedge shape platform 21 of basic pawl 2 axial force is converted into the radial load that acts on the basic pawl 2, thereby drive top pawl 5 and do radial displacement, unload workpiece with clamping or pine, in clamping process, prevent that by anti-rotation structure basic pawl from rotating.
From as can be seen last, the present invention has overcome for a long time, the inertia set pattern that people make basic pawl T-shape and correspondingly leave T-shape groove 22 at the chuck disk body traditionally when production wedge shape power chuck, proposed that completely newly basic pawl 2 made cylindrical shape and left the technical pattern of the cylindrical cavity 11 that matches with basic pawl 2 at chuck disk body 1, frictional resistance when basic pawl 2 is slided in cylindrical cavity 11 is littler, reduce the wearing and tearing of basic pawl 2 and chuck disk body 1, thereby prolonged the reliability of long-term use power chuck clamping, also just reduced the frequency of regular maintenance and the service life of having improved whole power chuck; In addition, when the cylindrical cavity 11 of processing chuck disk body 1 and cylindrical basic pawl 2, can obtain the higher accuracy of manufacture (can reach micron order), thereby can improve the self-centering clamping precision of chuck, to improve the machining accuracy to workpiece.
In the present embodiment, as shown in Figure 3, anti-rotation structure has two covers, is located between chuck disk body 1 and the top pawl 5 respectively and between chuck disk body 1 and the basic pawl 2, wherein a cover is out that it communicates with cylindrical cavity 11 at the square groove 6 of the opening part of the cylindrical cavity 11 of chuck disk body 1; This top pawl can drop into for 5 times in this square groove 6, just can prevent when work that so basic pawl 2 from rotating; Meanwhile, because the offering of square groove 6 moves down the cylindrical cavity 11 of chuck disk body 1, so basic pawl 2 upper surfaces in the cylindrical cavity 11 are lower than chuck disk body 1 upper surface, can strengthen stressed between basic pawl 2 and the chuck disk body 1 like this.Another set of employing square cushion block 8, in the described basic pawl 2 arc outer rim of pruning, have the square groove 12 of this arc outer rim of subtend at the chamber wall of the cylindrical cavity 11 of chuck disk body 1, the space that the arc outer rim that this is pruned and square groove 12 surround just holds this square cushion block 8, square cushion block 8 is fixedlyed connected with chuck disk body 1, and square cushion block 8 just can stop cylindrical basic pawl 2 to rotate like this.
Although describe the present invention in detail with reference to top embodiment, but it will be apparent to one skilled in the art that by the disclosure, and under the situation of the principle of the present invention that does not break away from described claim restriction and spiritual scope, can make a variety of changes or revise the present invention.Therefore, the detailed description of disclosure embodiment only is used for explaining, rather than is used for limiting the present invention, but is defined by the subject-matter of the claims the scope of protection.
Claims (4)
1. a wedge type power chuck includes chuck disk body, basic pawl, wedge-catch system, T type piece and top pawl, it is characterized in that, this base pawl is cylindrical, is provided with the wedge shape platform that the wedged hole with wedge-catch system matches at it near the end at chuck disk body center; Be evenly equipped with two or more cylindrical cavities along chuck disk body radial direction at chuck disk body circumference, it matches with columniform basic pawl; Have to settle the T type groove of T type piece at this base pawl; Have the broach that matches with the broach of pawl bottom surface, top on the surface of the T of basic pawl type groove both sides; Be provided with the anti-rotation structure that anti-columniform basic pawl rotates between in chuck disk body and top pawl and basic pawl one or two in the cylindrical cavity of chuck disk body.
2. wedge type power chuck according to claim 1, it is characterized in that described anti-rotation structure is that two covers are arranged, wherein a cover is out the square groove at the opening part of the cylindrical cavity of chuck disk body, it communicates with cylindrical cavity, can drop in this square groove under this top pawl; Another set of employing square cushion block, in the described basic pawl arc outer rim of pruning, have the square groove of this arc outer rim of subtend at the chamber wall of the cylindrical cavity of chuck disk body, the space that the arc outer rim that this is pruned and square groove surround just holds this square cushion block.
3. wedge type power chuck according to claim 1 is characterized in that, described anti-rotation structure is out the square groove at the opening part of the cylindrical cavity of chuck disk body, and it communicates with cylindrical cavity; Can drop in this square groove under this top pawl.
4. wedge type power chuck according to claim 1, it is characterized in that, described anti-rotation structure adopts square cushion block, in the described basic pawl arc outer rim of pruning, have the square groove of this arc outer rim of subtend at the chamber wall of the cylindrical cavity of chuck disk body, the space that the arc outer rim that this is pruned and square groove surround just holds this square cushion block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320278515 CN203221217U (en) | 2013-05-21 | 2013-05-21 | Wedge-shaped power chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320278515 CN203221217U (en) | 2013-05-21 | 2013-05-21 | Wedge-shaped power chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203221217U true CN203221217U (en) | 2013-10-02 |
Family
ID=49248234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320278515 Expired - Fee Related CN203221217U (en) | 2013-05-21 | 2013-05-21 | Wedge-shaped power chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203221217U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231084A (en) * | 2013-05-21 | 2013-08-07 | 方式 | Wedge-type power chuck |
| CN109175425A (en) * | 2018-10-09 | 2019-01-11 | 杭州泽正机械有限公司 | A kind of auxiliary centering long stroke frock clamp |
| CN112428293A (en) * | 2020-12-02 | 2021-03-02 | 江西联创光电超导应用有限公司 | Wedge type clamping device with high temperature resistant function |
-
2013
- 2013-05-21 CN CN 201320278515 patent/CN203221217U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231084A (en) * | 2013-05-21 | 2013-08-07 | 方式 | Wedge-type power chuck |
| CN109175425A (en) * | 2018-10-09 | 2019-01-11 | 杭州泽正机械有限公司 | A kind of auxiliary centering long stroke frock clamp |
| CN109175425B (en) * | 2018-10-09 | 2023-11-24 | 杭州泽正机械有限公司 | Auxiliary centering long-stroke tool fixture |
| CN112428293A (en) * | 2020-12-02 | 2021-03-02 | 江西联创光电超导应用有限公司 | Wedge type clamping device with high temperature resistant function |
| CN112428293B (en) * | 2020-12-02 | 2022-02-08 | 江西联创光电超导应用有限公司 | Wedge type clamping device with high temperature resistant function |
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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: 20131002 Termination date: 20170521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |