CN2695153Y - Locking type tightfisted drill clamping head - Google Patents
Locking type tightfisted drill clamping head Download PDFInfo
- Publication number
- CN2695153Y CN2695153Y CN 200420049768 CN200420049768U CN2695153Y CN 2695153 Y CN2695153 Y CN 2695153Y CN 200420049768 CN200420049768 CN 200420049768 CN 200420049768 U CN200420049768 U CN 200420049768U CN 2695153 Y CN2695153 Y CN 2695153Y
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- CN
- China
- Prior art keywords
- drill body
- drill
- back cover
- screw
- locking type
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- Expired - Fee Related
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Abstract
The utility model discloses a locking type tightfisted drill clamping head, comprising a hollow drill body. Three inclined holes with equal space are arranged in the drill body along the circular direction, and a clamping jaw is slideably arranged in each inclined hole. The middle part of the drill body is provided with a screw nut, and the screw nut is mutually connected with each clamping jaw through screws. The front end of the drill body is provided with a front sleeve, and the back end of the drill body is provided with a back sleeve. Teeth which can be mutually engaged are provided at the back end of the front sleeve and the front end of the back sleeve, and the back part of the drill body is provided with a step portion extending outward along the radical direction. The back sleeve is arranged at the back of the drill body, the back sleeve can be slid from top to bottom along the step portion, and elastic locking mechanisms which are mutually positioned are provided between the back sleeve and the step portion. The elastic locking mechanisms can lock the teeth of the back end of the front sleeve and the front end of the back sleeve in the unlocking state and the engaging state. The locking type tightfisted drill clamping head has reliable lock and can not be loosened in the working process. The machine precision of the products is ensured, the yield reduction is improved, the safety hazard is eliminated, and the safety of the operator is ensured.
Description
Technical field:
The utility model relates to a kind of hand fastening drill clutch, relates in particular to a kind of for example locking type hand fastening drill clutch on the drilling machine of machining equipment that is installed in.
Background technology:
In the prior art, hand fastening drill clutch generally comprises drill body, jaw, screw, protheca and back cover.Chinese utility model patent CN2322725 as Granted publication on June 9th, 1999, a kind of hand fastening drill clutch is disclosed, this drill chuck comprises drill body, jaw, screw, protheca and back cover, three jaws are separately positioned in three inclined holes that are distributed on the 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, interference fit between nut sleeve and the screw adopts key connecting to transmit moment of torsion between protheca and the nut sleeve.The shortcoming of this hand fastening drill clutch is: because locking mechanism is not set, it is unreliable to lock.When the drill bit in being loaded on drill chuck rotates in long-time high speed, screw and jaw might be because bigger axial advance power, radially revolving force and vibration etc. be former thereby loosening, so not only can reduce the machining accuracy of product, but also bring threat for operator's personal safety, there is great potential safety hazard.
The utility model content:
The technical problems to be solved in the utility model is the deficiency that overcomes above-mentioned prior art, a kind of locking type hand fastening drill clutch is provided, can not become flexible in its reliable lock, the course of work, can not only guarantee the machining accuracy of product, improve yield rate, and eliminated potential safety hazard, can guarantee operator's personal safety.
According to the locking type hand fastening drill clutch that the utility model provides, comprise a hollow drill body, along the inclined hole that circumferentially is provided with three inclinations equally spacedly, a jaw is installed slidably in each inclined hole in the described drill body; The middle part of described drill body is provided with a screw, and this screw and each described jaw interconnect by screw thread, can rotate relatively between described screw and the described drill body; The front end of described drill body is provided with a protheca, and the rear end is equipped with a back cover; Be provided with the structure of transmitting moment of torsion between described protheca and the described screw.The front end of the rear end of described protheca and described back cover is provided with can intermeshing tooth; The rear portion of described drill body is formed with a step part that extends radially outwardly, and described back cover is installed on the rear portion of described drill body, and can slide up and down along described step part, is provided with the elastic locking mechanism of mutual location between the two; Described elastic locking mechanism can lock two states that the tooth of described protheca rear end and back cover front end unclamps and meshes.
The locking type hand fastening drill clutch that provides according to the utility model, have following advantage with respect to prior art: since protheca rear end and back cover front end be provided with can intermeshing tooth, and between back cover and drill body, be provided with elastic locking mechanism, elastic locking mechanism can lock the tooth engagement of back cover front end and protheca rear end and two states that unclamp, thereby when installing drill bit, and after drill chuck tightened, can pull down the back cover, make back cover front end be meshed with the tooth of protheca rear end, and utilize elastic locking mechanism locking mesh state, at this moment can effectively prevent owing to impact, vibration etc. makes and relatively rotates between screw and the drill body and make jaw loosening, can not only guarantee the machining accuracy of product, improve the time of drill chuck continuous operation, and eliminated potential safety hazard effectively, guaranteed operator's personal safety.
Description of drawings:
The utility model is feature and advantage further, and the embodiment that provides is in conjunction with the accompanying drawings described in detail.Wherein:
Fig. 1 partly cuts open cutaway view for a kind of preferred embodiment of the locking type hand fastening drill clutch that provides according to the utility model, there is shown the internal structure and the outer shape of this drill chuck;
Fig. 2 is the A-A cutaway view of Fig. 1, there is shown the engaging structure of the tooth of back cover front end and protheca rear end;
Fig. 3 is the B-B cutaway view of Fig. 1, there is shown the concrete structure of elasticity locking mechanism in the preferred embodiment;
Fig. 4 partly cuts open cutaway view for the another kind of preferred embodiment of the locking type hand fastening drill clutch that provides according to the utility model, there is shown the another kind of internal structure of this drill chuck;
Fig. 5 is the C-C cutaway view of Fig. 4, there is shown the concrete structure of elasticity locking mechanism in the preferred embodiment.
The specific embodiment:
Before describing the utility model in detail, define relational language earlier:
" front end " that the utility model is alleged means in the hand fastening drill clutch, an end of each jaw clamping drilling bit, i.e. lower end among Fig. 1 and Fig. 4.
" rear end " that the utility model is alleged means in the hand fastening drill clutch, with machining tool, and for example end that connects of drilling machine, i.e. upper end among Fig. 1 and Fig. 4.
Referring to Fig. 1, according to the locking type hand fastening drill clutch that the utility model provides, comprise a hollow drill body 1, along the inclined hole that circumferentially is provided with three inclinations equally spacedly, a jaw 2 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, this screw 3 and each described jaw 2 interconnect by screw thread, can rotate relatively between described screw 3 and the described drill body 1, its concrete structure is as shown in fig. 1: the middle part of described drill body 1 is formed with a step part that extends radially outwardly 15, the front end face of described step part 15 is processed with the circular orbit of depression, is placed with a plurality of balls 31 in the described circular orbit.
As shown in FIG., the front end of described drill body 1 is provided with a protheca 4, and the rear end is equipped with a back cover 5; Be provided with the structure of transmitting moment of torsion between described protheca 4 and the described screw 3, its concrete structure as shown in fig. 1: described screw 3 be a two halves formula structure, and described protheca 4 is embedded with the metal insert 41 of an annular, described metal insert 41 and described screw 3 interference fit.Thereby rotate described protheca 4, can make the described relatively drill body 1 of described screw 3 rotate.
Of the present utility model being characterised in that: the front end of the rear end of described protheca 4 and described back cover 5 is provided with can intermeshing tooth 41,51, as shown in Figure 2, in the preferred embodiment that the utility model provides, described tooth 41,51 is a straight-tooth, certainly the also tooth of helical teeth or other shape.The rear portion of described drill body 1 is formed with a step part that extends radially outwardly 11, and described back cover 5 is installed on the rear portion of described drill body 1, and can slide up and down along described step part 11, is provided with the elastic locking mechanism 10 of mutual location between the two; Described elastic locking mechanism 10 can lock two states that described straight-tooth 41 and straight-tooth 51 unclamp and mesh.
As shown in Fig. 1,3, described step part 11 is formed with at least one groove that radially caves inward 12, is formed with the locating convex block 52 that inserts described groove 12 accordingly on the described back cover 5; Described groove 12 matches with locating convex block 52 and is used for determining the radial position of described drill body 1 and back cover 5.
At a kind of preferred embodiment that the utility model provides, as shown in figs. 1 and 3, described step part 11 is formed with at least one blind hole 13 that extends radially inwardly, and is provided with a stage clip 14 and a ball 15 in the described blind hole 13 from inside to outside successively; Be formed with accordingly on the described back cover 5 and can hold two locating holes 53 described ball 15, that be positioned at same upright position; Described stage clip 14, ball 15 and the described elastic locking of described locating hole 53 compositions mechanism 10.When described ball 15 snaps in the described locating hole 53 of rear end (i.e. upper end among the figure) (state as shown in Figure 1), described straight- tooth 41,51 is meshed, this moment, drill chuck was in locking state, can prevent that drill chuck is in the course of the work owing to shock and vibration are become flexible; When described ball 15 snapped in the described locating hole 53 of front end (i.e. lower end among the figure), described straight- tooth 41,51 did not mesh, and this moment, drill chuck was in releasing orientation, can install easily this moment and bit change more.
As shown in Fig. 1,3, described back cover 5 is made up of a shell 6 and the beckets 7 that are embedded in the described shell 6, is formed with described locating convex block 52 and described locating hole 53 on the described becket 7.As shown in fig. 1, the lower end of described becket 7 and described shell 6 is formed with radial groove and the projection that cooperatively interacts, and makes the two install more firmly.
In the above preferred embodiment that the utility model provides, be formed with three described grooves 12 and three described blind holes 13 on the described drill body 1, be formed with three described locating convex blocks 52 and three described locating holes 53 accordingly on the described back cover 5, described three locating convex blocks 52 and described three locating holes 53 along the circumferential direction evenly distribute, so 60 degree of being separated by between each described locating convex block 52 and the locating hole 53.
In Fig. 1, the rear end of described drill body 1 is provided with one and is used to stop described back 5 the back-up ring 8 that overlaps, and the rear end of described back-up ring 8 is provided with circlip 9, and described back-up ring 8 can prevent that cover 5 rear ends from described drill body 1, described back from skidding off.
Referring to Figure 4 and 5, as another kind of preferred embodiment of the present utility model, cover 5 positions that are positioned at described locating convex block 52 middle parts, described back are provided with the through hole 54 that radially connects, and screw 55, stage clip 56 and ball 57 are housed in the described through hole 54 from outside to inside successively; Described step part 11 is formed with accordingly and holds two locating holes 16 described ball 56, that be positioned at same upright position; Described screw 55, stage clip 56, ball 57 and the described elastic locking of described locating hole 16 compositions mechanism 10.
As shown in Figure 5, the above preferred embodiment that is providing, described step part 11 is formed with three described grooves 12, correspondingly be formed with three described locating convex blocks 52 on the described back cover 5, described three described grooves 12 and described locating convex block 52 along the circumferential direction evenly distribute, so 120 degree of being separated by between each described groove 12 and the locating convex block 52.
As shown in Figure 4, the rear end of described drill body 1 is equipped with a circlip 9, and described circlip 9 can prevent that cover 5 rear ends from described drill body 1, described back from skidding off.
The use of locking type hand fastening drill clutch of the present utility model is as follows: at first by the screwed hole on the drill body, hand fastening drill clutch of the present utility model is fastened on the drill press spindle, then described back cover 5 is upwards drawn, make straight-tooth 41 and straight-tooth 51 be in releasing orientation, (from the front end of drill chuck) rotates described protheca 4 counterclockwise again, described protheca 4 drives described screw 3 and rotates, thereby make described three jaws 2 move upward simultaneously and three openings between jaw are increased, then drill bit is inserted wherein; The described protheca 4 that turns clockwise again rotates thereby drive described screw 3, makes described three jaws 4 move downward and drill bit is clamped, and pulls down back cover 5 then, and ball 57,15 is matched with locating hole 53,14 respectively, and this moment, straight- tooth 41,51 was meshed.Make protheca 4 can not guarantee operator's personal safety owing to impact shock becomes flexible.If bit change more, its operating process in contrast, repeats no more herein.
The foregoing description only supplies the usefulness of explanation the utility model, and is not to be to restriction of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (10)
1, a kind of locking type hand fastening drill clutch comprises a hollow drill body (1), along the inclined hole that circumferentially is provided with three inclinations equally spacedly, a jaw (2) 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 (2) interconnect by screw thread, can rotate relatively between described screw (3) and the described drill body (1); The front end of described drill body (1) is provided with a protheca (4), and the rear end is equipped with a back cover (5); Be provided with the structure of transmitting moment of torsion between described protheca (4) and the described screw (3); It is characterized in that:
The front end of the rear end of described protheca (4) and described back cover (5) is provided with can intermeshing tooth (41,51); The rear portion of described drill body (1) is formed with a step part that extends radially outwardly (11), described back cover (5) is installed on the rear portion of described drill body (1), and can slide up and down along described step part (11), be provided with the elastic locking mechanism (10) of mutual location between the two; Described elastic locking mechanism (10) can lock two states that described tooth (41) and tooth (51) unclamp and mesh.
2, locking type hand fastening drill clutch according to claim 1, it is characterized in that: described step part (11) is formed with at least one groove that radially caves inward (12), is formed with the locating convex block (52) that inserts described groove (12) on the described back cover (5) accordingly.
3, locking type hand fastening drill clutch according to claim 2, it is characterized in that: described step part (11) is formed with at least one blind hole (13) that extends radially inwardly, and is provided with a stage clip (14) and a ball (15) in the described blind hole (13) from inside to outside successively; Be formed with accordingly on the described back cover (5) and can hold two locating holes (53) described ball (15), that be positioned at same upright position; Described stage clip (14), ball (15) and described locating hole (53) are formed described elastic locking mechanism (10).
4, locking type hand fastening drill clutch according to claim 3, it is characterized in that: described back cover (5) is by a shell (6) and be embedded in the interior becket (7) of described shell (6) and form, and is formed with described locating convex block (52) and described locating hole (53) on the described becket (7).
5, locking type hand fastening drill clutch according to claim 3, it is characterized in that: be formed with three described grooves (12) and three described blind holes (13) on the described drill body (1), be formed with three described locating convex blocks (52) and three described locating holes (53) accordingly on the described back cover (5), described three locating convex blocks (52) and described three locating holes (53) along the circumferential direction evenly distribute.
6, locking type hand fastening drill clutch according to claim 3 is characterized in that: the rear end of described drill body (1) is provided with one and is used to stop the described back back-up ring (8) that overlaps (5), and the rear end of described back-up ring (8) is provided with circlip (9).
7, locking type hand fastening drill clutch according to claim 2, it is characterized in that: the position that described back cover (5) is positioned at described locating convex block (52) middle part is provided with the through hole (54) that radially connects, and screw (55), stage clip (56) and ball (57) are housed in the described through hole (54) from outside to inside successively; Described step part (11) is formed with accordingly and holds two locating holes (16) described ball (56), that be positioned at same upright position; Described screw (55), stage clip (56), ball (57) and described locating hole (16) are formed described elastic locking mechanism (10).
8, locking type hand fastening drill clutch according to claim 7, it is characterized in that: described step part (11) is formed with three described grooves (12), correspondingly be formed with three described locating convex blocks (52) on the described back cover (5), described three described grooves (12) and described locating convex block (52) along the circumferential direction evenly distribute.
9, according to claim 2 or 7 described locking type hand fastening drill clutch, it is characterized in that: described screw (3) is two halves formula structure, described protheca (4) is embedded with the metal insert (41) of an annular, described metal insert (41) and described screw (3) interference fit.
10, according to claim 2 or 7 described hand fastening drill clutch, it is characterized in that: the middle part of described drill body (1) is formed with a step part that extends radially outwardly (17), the front end face of described step part (17) is processed with the circular orbit of depression, is placed with a plurality of balls (31) in the described circular orbit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049768 CN2695153Y (en) | 2004-04-29 | 2004-04-29 | Locking type tightfisted drill clamping head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049768 CN2695153Y (en) | 2004-04-29 | 2004-04-29 | Locking type tightfisted drill clamping head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695153Y true CN2695153Y (en) | 2005-04-27 |
Family
ID=34776715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420049768 Expired - Fee Related CN2695153Y (en) | 2004-04-29 | 2004-04-29 | Locking type tightfisted drill clamping head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695153Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015719A (en) * | 2017-12-22 | 2018-05-11 | 中建八局第建设有限公司 | A kind of detachable type drill with dust-absorbing function |
| CN113564822A (en) * | 2021-09-23 | 2021-10-29 | 南通金梭精密机械有限公司 | Large thread capacity sewing machine rotating shuttle |
-
2004
- 2004-04-29 CN CN 200420049768 patent/CN2695153Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015719A (en) * | 2017-12-22 | 2018-05-11 | 中建八局第建设有限公司 | A kind of detachable type drill with dust-absorbing function |
| CN108015719B (en) * | 2017-12-22 | 2024-02-13 | 中建八局第一建设有限公司 | Detachable drill bit with dust collection function |
| CN113564822A (en) * | 2021-09-23 | 2021-10-29 | 南通金梭精密机械有限公司 | Large thread capacity sewing machine rotating shuttle |
| CN113564822B (en) * | 2021-09-23 | 2021-12-17 | 南通金梭精密机械有限公司 | Large thread capacity sewing machine rotating shuttle |
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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 (GROUP) CO., LTD. Effective date: 20070216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070216 Address after: 318050 Luqiao science and Technology Industrial Park, Zhejiang, Taizhou Patentee after: Sanou Machinery Co., Ltd., Zhejiang Address before: 318050 long road, science and technology zone, Luqiao District, Zhejiang, Taizhou Patentee before: Sanou (Group) Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050427 |