CN2649233Y - Locked drill chuck - Google Patents
Locked drill chuck Download PDFInfo
- Publication number
- CN2649233Y CN2649233Y CN 03282514 CN03282514U CN2649233Y CN 2649233 Y CN2649233 Y CN 2649233Y CN 03282514 CN03282514 CN 03282514 CN 03282514 U CN03282514 U CN 03282514U CN 2649233 Y CN2649233 Y CN 2649233Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- protheca
- drill body
- cover
- screw
- 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
The utility model discloses a locking drilling chuck, which consists of a drilling body, a wire maternal, a front sleeve, a middle sleeve, and a post sleeve. The front sleeve is installed in the front of the drilling body, the middle sleeve is arranged behind the front sleeve, and the post sleeve is provided at the end of the drilling body. The wire maternal is installed in the middle of the drilling body. The characters: six protuberant locating blocks are arranged on the post sleeve, which form three positioning slots, two half-slots, arranging at up and down positions, are relative to the positioning slots; three activity blocks are distributed uniformly at the middle sleeve, three holes with springs and rolling balls inside are distributed uniformly in each activity block; the activity blocks of the middle sleeve button up with the positioning slots of the post sleeve firmly; a plurality of protuberant straight teeth are located on the inner surface of the middle sleeve and backward of the front sleeve, the straight teeth driven by the springs can stretch in the hole of the middle sleeve, and the rolling balls pushed by the stretching straight teeth can slide in the two up and down half-slots of the post sleeve, which can make the straight teeth of the front sleeve and middle sleeve meshed, thus the looseness of the drilling head can be prevented effectively.
Description
Technical field
The utility model relates to a kind of locking drill chuck, relates in particular to a kind of for example locking drill chuck on the drilling machine of machining equipment that is installed in.
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 and can make that 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 above-mentioned prior art deficiency, and a kind of locking type clamping head of drill is provided, and can prevent the loosening of drill bit effectively.
The locking drill chuck that provides according to the utility model, comprise a drill body, the edge circumferentially is provided with the inclined hole of three inclinations equally spacedly in the described drill body, one jaw is installed in each inclined hole slidably, described drill body middle part is provided with a screw, and this screw and each described jaw interconnect by screw thread.Described screw is a two halves formula structure, and its external peripheral surface is with a nut sleeve, and interference fit between nut sleeve and the screw is provided with the structure of transmitting moment of torsion between protheca and the nut sleeve.Described screw rear end is provided with ball, realizes relative motion between screw and the drill body by these balls.Described drill body cylindrical is nested with a protheca, and the outer surface at its rear portion is provided with several straight-tooth.Described protheca front end is provided with sheathing, described drill body rear end is provided with the back cover, be provided with six outstanding locating pieces in one side towards drill body inside, thereby form three locating slots, be provided with upper and lower two half-arc grooves in the position relative with locating slot, described protheca rear end is provided with middle cover, be provided with three uniform movable blocks in the direction in drill body, movable block is provided with three uniform holes, is provided with ball and spring in the hole, on the described middle cover inner surface several outstanding straight-tooth is arranged.The radial location of overlapping in realizing cooperating between the locating piece by cover in described and the locating slot of back cover.
Described spring is flexible in the hole of middle cover, and the straight-tooth of the straight-tooth that makes protheca and middle cover meshes or unclamps thereby the ball the hole in slides in upper and lower two arc grooves of back cover, drill chuck is in locks or releasing orientation.According to the locking drill chuck that the utility model provides, have following advantage: owing to adopted a pair of straight-tooth of working in coordination to reach the purpose of locking, locking property is reliable, has improved the time of drill chuck continuous operation, has strengthened the overall performance of drill chuck like this.
Description of drawings
Structural representation according to a kind of embodiment of the axial lock compact form drill chuck that provides of the present utility model is provided Fig. 1;
Fig. 2 is along the cross section view of A-A line among Fig. 1;
Fig. 3 is along the cross section view of B-B line among Fig. 1.
The specific embodiment
Referring to accompanying drawing, as embodiment of the present utility model, locking drill chuck as shown in the figure, comprise a drill body 1, the edge circumferentially is provided with the inclined hole of three inclinations equally spacedly in the described drill body 1, one jaw 4 is installed in each inclined hole slidably, and described drill body 1 middle part is provided with a screw 3, and this screw 3 and each described jaw 4 interconnect by screw thread.Described screw 3 is a two halves formula structure, and its external peripheral surface is with a nut sleeve 6, and interference fit between nut sleeve 6 and the screw 3 is provided with the structure of transmitting moment of torsion between protheca 2 and the nut sleeve 6.Described screw 3 rear ends are provided with ball 5, realize relative motion between screw 3 and the drill body 1 by these balls 5.Be nested with a protheca 2 outside the described drill body 1, the outer surface of its rear end is provided with several straight-tooth 21.Described protheca 2 front ends are provided with sheathing 11, described drill body 1 rear end is provided with back cover 8, its one side towards drill body 1 inside is provided with six outstanding locating pieces 82, thereby form three locating slots 83, position relative with locating slot 83 on described back cover 8 is provided with upper and lower two half-arc grooves 81, cover 7 during described protheca 2 rear ends are provided with, be provided with three uniform locating pieces 71 in the direction in drill body 1, locating piece 71 is provided with three uniform holes 72, be provided with ball 10 and spring 9 in the hole 72, the inner surface of middle cover 7 has several outstanding straight-tooth 73.Overlap 7 radial location in realizing cooperating between the locating piece 71 by cover 7 in described and the locating slot 83 of back cover 8.
Described spring 9 flexible ball 10 that makes in the hole 72 of middle cover 7 slides in upper and lower two arc grooves 81 of back cover 8, and the straight-tooth 21 that makes protheca 2 is with straight-tooth 73 engagements of middle cover 7 or unclamp, and locks or releasing orientation thereby drill chuck is in.
As shown in Figure 1, the external peripheral surface of described protheca 2, middle cover 7 and back cover 8 has been formed separately some grooves 22,74 and fin 84, so that the operator installs and bit change more.
The use of locking drill chuck of the present utility model is as follows: at first by the screwed hole of drill body 1 upper end, improved locking drill chuck of the present utility model is fixed on the drill press spindle, then middle cover 7 is upwards drawn, thereby make the straight-tooth 21 of protheca 2 and the straight-tooth 73 of middle cover 7 be in releasing orientation.(from the drill chuck front end) rotates described protheca 2 counterclockwise again, described protheca 2 drives described screw 3 and rotates, thereby described three jaws 4 are moved upward simultaneously, make the opening of 4 of three jaws increase, then drill bit is inserted wherein, the described protheca 2 that turns clockwise again rotates thereby drive described screw 3, makes described three jaws 4 move downward and drill bit is clamped.Middle cover 7 is pulled down again, make straight-tooth 73 engagements of straight-tooth 21 with the middle cover of protheca, locking drill chuck can begin drilling.If bit change more, its operating process repeats no more in contrast herein.
Claims (2)
1, a kind of locking drill chuck, comprise drill body, screw, protheca, middle cover and back cover, this protheca is installed in the front portion of described drill body, described protheca rear end is provided with middle cover, described drill body rear end is provided with the back cover, 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 a nut sleeve, interference fit between this nut sleeve and the described screw, it is characterized in that: the one side that is enclosed within after described towards drill body inside is provided with six outstanding locating pieces, thereby form three locating slots, the position that described locating slot is relative is provided with, following two half-arc grooves, the direction that is enclosed within described in drill body is provided with three uniform movable blocks, movable block is provided with three uniform holes, is provided with ball and spring in the hole, engages closely between movable block and the locating slot that the back is overlapped of cover in described; And the rear portion of protheca and the inner surface of middle cover have several outstanding straight-tooth, by spring flexible straight-tooth engagement that makes ball slip in upper and lower two arc grooves of back cover make the straight-tooth and the middle cover of protheca in the hole of middle cover.
2, locking drill chuck as claimed in claim 1 is characterized in that: the external peripheral surface of described protheca, middle cover and back cover has been formed separately some fins and groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03282514 CN2649233Y (en) | 2003-09-19 | 2003-09-19 | Locked drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03282514 CN2649233Y (en) | 2003-09-19 | 2003-09-19 | Locked drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2649233Y true CN2649233Y (en) | 2004-10-20 |
Family
ID=34332693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03282514 Expired - Fee Related CN2649233Y (en) | 2003-09-19 | 2003-09-19 | Locked drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2649233Y (en) |
-
2003
- 2003-09-19 CN CN 03282514 patent/CN2649233Y/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: 20050923 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050923 Address after: 318050 long road hi tech Zone, Lunan Road, Luqiao District, Zhejiang, Taizhou Patentee after: Sanou Machinery Co., Ltd., Zhejiang Address before: 318050, Lunan Road, Luqiao District, Zhejiang, Taizhou Patentee before: San-ou Drill Holder Manufacturing Co., Ltd., Taizhou City |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |