CN2730524Y - Hand tightening type drill chuck - Google Patents
Hand tightening type drill chuck Download PDFInfo
- Publication number
- CN2730524Y CN2730524Y CN 03263019 CN03263019U CN2730524Y CN 2730524 Y CN2730524 Y CN 2730524Y CN 03263019 CN03263019 CN 03263019 CN 03263019 U CN03263019 U CN 03263019U CN 2730524 Y CN2730524 Y CN 2730524Y
- Authority
- CN
- China
- Prior art keywords
- protheca
- cover
- drill body
- drill chuck
- key
- 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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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a hand tightening type drill chuck, comprises a drill body whose front end is provided with a decorative cover, a nut which is installed on the middle of the drill body, a front cover which is installed on the front part of the drill body and a rear cover. The utility model is characterized in that the peripheral surface of the nut is sheathed with an inner cover which is interference fit with the nut; the inner wall of the front cover is installed at least one key bed, and the lower end of the inner cover is equipped with a key which cooperates with the key bed and is in the key bed; the lower end of the key is equipped with at least one positioning slice on which a hole is provided; at least one protrusion which is opposite to the hole and is fastened in the hole is formed in the front cover. The front cover and the rear cover are steady after installation, and they can not generate radical direction sloshing when the drill chuck operates, and they run more stably.
Description
Technical field
The utility model relates to the drill chuck that a kind of machining equipment uses, especially a kind of manually fastened drill chuck comparatively firm when being installed in the work of using on the drilling machine.
Background technology
In the prior art, drill chuck generally comprises drill body, jaw, screw, protheca and back cover.On June 9th, 1999 Granted publication Chinese utility model patent CN2322725, a kind of drill chuck is disclosed, three jaws of this drill chuck are separately positioned in three inclined holes on the uniform drill body, adopt between screw and the jaw and be threaded, the rear end of screw is provided with thrust bearing, the rear end of thrust bearing is provided with back-up ring, the rear end of drill body is equipped with the back cover, screw is a two halves formula structure, by a nut sleeve two halves are integrated, adopt key to be connected the transmission moment of torsion between the interference fit between nut sleeve and the screw, protheca and nut sleeve.The inner surface of protheca front end forms annular protrusion, and corresponding position that should projection on the drill body is provided with annular groove, realizes the axial location of protheca by the cooperation of above-mentioned projection and groove.The shortcoming of this drill chuck is: owing to adopt key to be connected the transmission moment of torsion between protheca and the nut sleeve, adopt monolateral key to transmit moment of torsion thus make transmit moment of torsion can not the balance transmission, inner surface by the protheca front end forms the axial location that realizes protheca that cooperates of annular groove on annular protrusion and the drill body, the not only installation inconvenience of protheca, and the rear end do not have fit dimension, and the two all can produce more greatly and rock when making drill chuck work.
The utility model content:
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of manually fastened drill chuck is provided, and transmission moment of torsion between protheca and the screw can smooth transfer not be produced rock.
The technical solution adopted in the utility model is: a kind of manually fastened drill chuck, comprise drill body, screw, protheca and back cover, this protheca is installed in the front portion of described drill body, this screw is installed in the middle part of described drill body, the front end of described drill body is equipped with sheathing, described screw outer surface is with cover in, interference fit between cover and the described screw in this; Described protheca inwall offers at least one keyway, and the lower end of described interior cover is provided with the key that matches with described keyway, and this key is positioned at described keyway; The lower end of this key is provided with at least one spacer, has the hole on this spacer, is formed with at least one projection in the described protheca, and its position is corresponding with the position in described hole, and this projection is connected in the hole.
Further, the protheca inwall of described manually fastened drill chuck offers a plurality of keyways and evenly distributes along circumferential.
Further, the spacer of described manually fastened drill chuck extends downwardly into the front end face of described drill body and is formed with chamfering, and the front end that is enclosed in described drill body replaces described sheathing.
Further, the outer round surface of the protheca of described manually fastened drill chuck and back cover has been formed separately some fins and groove.
The manually fastened drill chuck that provides according to the utility model has following advantage with respect to prior art: owing to adopted at least one key to be fixed on keyway as the structure of transmitting moment of torsion between protheca and the screw, it is more steady that drill chuck is moved at work; Projection by described protheca is connected to the axial location that realizes protheca in the interior hole of overlapping, protheca is put in being fixed on, not only protheca is comparatively convenient with back cover installation, and all comparatively firm after protheca and back cover are installed, and the two can not produce radially and rock when drill chuck was worked.
Description of drawings:
Structural representation according to a kind of embodiment of the manually fastened drill chuck that provides of the present utility model is provided Fig. 1;
Structural representation according to the another kind of embodiment of the manually fastened drill chuck that provides of the present utility model is provided Fig. 2;
Fig. 3 is along the cross section view of A-A line among Fig. 1;
Fig. 4 is along the cross section view of B-B line among Fig. 1.
The tool present embodiment:
Referring to Fig. 1, as a kind of embodiment of the present utility model, hand formula drill chuck comprises a drill body 1, along the inclined hole that circumferentially is provided with three inclinations equally spacedly, a jaw 4 is installed slidably in each inclined hole in the described drill body 1.The middle part of described drill body 1 is provided with a screw 3, and this screw 3 and each described jaw 4 interconnect by screw thread.The front end of described drill body 1 is provided with a protheca 2, and the rear end is equipped with a back cover 6, and described screw 3 rear ends are provided with a plurality of balls 5, can realize relatively rotating between screw 3 and the drill body 1 by these balls 5.Described screw 3 is a two halves formula structure, and its outer surface is with cover 7 in, interference fit between screw 3 and the interior cover 7.Cover 7 is a rotary body in described, and the front end of drill body 1 is equipped with sheathing 8.Referring to Fig. 3, described protheca 2 inwalls are provided with at least one keyway 22; When being provided with a plurality of keyway 22, a plurality of keyways 22 are along circumferentially evenly distributing, make its when work stressed evenly.The lower end of interior cover 7 is provided with the key 72 that matches with keyway 22, and the keyway 22 that is fixed on protheca 2 by key 72 is interior as the structures of transmitting moment of torsion between protheca 2 and the screw 3.As shown in Figure 4, the lower end of key 72 is provided with at least one spacer 73, has hole 71 on the spacer 73, is formed with at least one protrudingly 21 in the protheca 2, and its position is corresponding with the position in hole 71.Projection 21 by protheca 2 is connected to the axial location that realizes in the hole 71 between protheca 2 and the screw 3.
Another kind of embodiment of the present utility model, as shown in Figure 2, spacer 73 extends downwards, directly extends to the front end face of drill body 1 and is formed with chamfering, and the front end that is enclosed in drill body 1 replaces sheathing 8.So improve, can reduce number of spare parts of the present utility model, cut down finished cost, make profile more attractive in appearance simultaneously.
In addition, as shown in fig. 1, in the foregoing description that provides, the outer round surface of described protheca 2 and back cover 6 has been formed separately some fins 23 and groove 61, so that the operator installs and bit change more.
The use of manually fastened drill chuck of the present utility model is as follows:
At first by the screwed hole on the drill body, manually fastened drill chuck of the present utility model is fastened on the drill press spindle, rotate described protheca 2 again, described protheca 2 drives described screw 3 and rotates, thereby makes described three jaws 4 move upward simultaneously and the opening of 4 of three jaws is increased, and then drill bit is inserted wherein, described protheca 2 again turns clockwise, rotate thereby drive described screw 3, make described three jaws 4 move downward and drill bit is clamped, can carry out drilling.If bit change more, its operating process repeats no more in contrast herein.
Claims (4)
1, a kind of manually fastened drill chuck, comprise drill body, screw, protheca and back cover, this protheca is installed in the front portion of described drill body, this screw is installed in the middle part of described drill body, the front end of described drill body is equipped with sheathing, it is characterized in that: described screw outer surface is with cover in, interference fit between cover and the described screw in this; Described protheca inwall offers at least one keyway, and the lower end of described interior cover is provided with the key that matches with described keyway, and this key is positioned at described keyway; The lower end of this key is provided with at least one spacer, has the hole on this spacer, is formed with at least one projection in the described protheca, and its position is corresponding with the position in described hole, and this projection is connected in the hole.
2, manually fastened drill chuck as claimed in claim 1 is characterized in that: described protheca inwall offers a plurality of keyways and evenly distributes along circumferential.
3, manually fastened drill chuck as claimed in claim 1 is characterized in that: described spacer extends downwardly into the front end face of described drill body and is formed with chamfering, and the front end that is enclosed in described drill body replaces described sheathing.
4, manually fastened drill chuck as claimed in claim 1 is characterized in that: the outer round surface of described protheca and back cover has been formed separately some fins and groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03263019 CN2730524Y (en) | 2003-09-29 | 2003-09-29 | Hand tightening type drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03263019 CN2730524Y (en) | 2003-09-29 | 2003-09-29 | Hand tightening type drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2730524Y true CN2730524Y (en) | 2005-10-05 |
Family
ID=35050868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03263019 Expired - Fee Related CN2730524Y (en) | 2003-09-29 | 2003-09-29 | Hand tightening type drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2730524Y (en) |
-
2003
- 2003-09-29 CN CN 03263019 patent/CN2730524Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG SANOU MACHINE CO., LTD. Free format text: FORMER OWNER: SANOU DRILL CHUCK MANUFACTURING CO., LTD., TAIZHOU CITY Effective date: 20070209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070209 Address after: 318050 Luqiao science and Technology Industrial Zone, Zhejiang, Taizhou Patentee after: Sanou Machinery Co., Ltd., Zhejiang Address before: 318050 Luqiao District, Zhejiang, Taizhou Patentee before: San-ou Drill Holder Manufacturing Co., Ltd., Taizhou City |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051005 Termination date: 20100929 |