CN2440611Y - Hand fastened drill chuck - Google Patents
Hand fastened drill chuck Download PDFInfo
- Publication number
- CN2440611Y CN2440611Y CN 00257933 CN00257933U CN2440611Y CN 2440611 Y CN2440611 Y CN 2440611Y CN 00257933 CN00257933 CN 00257933 CN 00257933 U CN00257933 U CN 00257933U CN 2440611 Y CN2440611 Y CN 2440611Y
- Authority
- CN
- China
- Prior art keywords
- screw
- protheca
- drill
- rear end
- drill body
- 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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- Drilling And Boring (AREA)
Abstract
The utility model relates to a hand fastened drill chuck, which comprises a drill body, a front sleeve which is sheathed on the front end of the drill body, nuts arranged on the rear end of the front sleeve and three clamping jaws installed in three inclined holes uniformly distributed on the drill body. The three clamping jaws are connected with the nuts by thread. The rear end of each nut is provided with a bearing, and the rear end of the drill body is sheathed with a rear sleeve. The front sleeve and the nuts are provided with at least a pair of parallel planes which are matched mutually. The outer profile of each nut can form a square body or a hexahedron, and the interior of the front sleeve is correspondingly provided with square holes or hexagonal holes matched with the outer profiles of the nuts.
Description
The utility model relates to a kind of hand fastening drill clutch, relates in particular to a kind of for example hand fastening drill clutch on the drilling machine of machining equipment that is installed in.
In the prior art, hand fastening drill clutch generally comprises drill body, jaw, screw, protheca and back cover.Chinese patent CN2221457 discloses a kind of hand fastening drill clutch, be provided with drill body, jaw, screw, protheca and back cover, three jaws are separately positioned in three inclined holes on the drill body, adopt between screw and the jaw and be threaded, on the oblique circular hole rear end on the drill body, drill body cylindrical the rear portion back-up ring is set, is provided with bearing between screw and the rear portion back-up ring, the drill body rear end is equipped with the back cover, screw is an overall structure, adopts key to be connected or the connection that is shaped between protheca and the screw.Owing to adopt key to be connected or the connection that is shaped between protheca and the screw, make the processing cost raising of protheca and screw to make assembling process complicated simultaneously.
The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, and a kind of improved hand fastening drill clutch is provided, and the structure of transmitting moment of torsion between its protheca and screw is relative simpler.
The hand fastening drill clutch that provides according to the utility model, comprise drill body, be placed on described drill body front end protheca, be arranged at described protheca rear end screw and with three uniform inclined holes that are installed on the described drill body in three jaws, described three jaws and screw are by being threaded, the rear end of described screw is provided with thrust bearing, the rear end of described drill body is equipped with the back cover, and described protheca and screw are provided with at least one pair of parallel plane that cooperatively interacts.
The utility model also has following additional technical feature:
The gabarit shape of described screw can also be tetragonal body or hexahedron, and described protheca inside correspondingly is provided with cubic hole or the hexagonal hole that cooperates with it.
Described screw is made up of two halves, by a steel bushing double half hitch is integrated.
The rear end of described thrust bearing is provided with back-up ring.
The interstage sleeve that is provided with between described protheca front end and the drill body.
The outer round surface of described protheca and back cover is respectively equipped with some projectioies and groove.
The hand fastening drill clutch that provides according to the utility model has following advantage: owing to adopt the parallel plane that cooperatively interacts between described protheca and the screw, its shaping can obtain with precision die forging or by standard machinery processing, thereby cost is lower, the assembling is more convenient.
The embodiment that provides below in conjunction with accompanying drawing describes the utility model in detail:
Structural representation according to a kind of embodiment of the hand fastening drill clutch that provides of the present utility model is provided Fig. 1;
Fig. 2 is the cutaway view along A-A section among Fig. 1;
Cutaway view according to the another kind of embodiment of the hand fastening drill clutch that provides of the present utility model is provided Fig. 3;
Cutaway view according to another embodiment of the hand fastening drill clutch that provides of the present utility model is provided Fig. 4.
As illustrated in fig. 1 and 2, the hand fastening drill clutch that provides according to the utility model, comprise drill body 1, be placed on described drill body 1 front end protheca 2, be arranged at the screw 3 of described protheca 2 rear ends and be installed on three jaws 4 in three uniform inclined holes on the described drill body 1, described three jaws 4 and screw 3 are by being threaded, the rear end of described screw 3 is provided with thrust bearing 6, the rear end of described drill body 1 is equipped with back cover 8, is provided with at least one pair of parallel plane that cooperatively interacts 31,32 between described protheca 2 and the screw 3.
As shown in Figure 3, as a kind of variation of screw 3 and protheca 2, the gabarit of described screw 3 is shaped as tetragonal body, and described protheca 2 inside correspondingly are provided with cubic hole with matching.
As shown in Figure 4, as the another kind of variation of screw 3 and protheca 2, the gabarit of described screw 3 is shaped as hexahedron, and described protheca 2 inside correspondingly are provided with hexagonal hole with matching.
In the foregoing description that provides, described screw 3 is made up of two halves, by a steel bushing 5 double half hitch is integrated.The rear end of described thrust bearing 6 is provided with back-up ring 7, the interstage sleeve 9 that is provided with between described protheca 2 front ends and the drill body 1, and the outer round surface of described protheca 2 and back cover 8 is respectively equipped with some projectioies and groove 21 and 81.As shown in Figure 1, described drill body 1 is a hollow-core construction, and its rear end is processed with internal thread, and it is connected with the machining apparatus main shaft by this screw thread.
Use of the present utility model is as follows: at first the utility model is installed on the drill press spindle, (from the front end of drill chuck) rotates described protheca 2 counterclockwise again, described protheca 2 drives described screw 3 and rotates, thereby make described three jaws (4) move upward simultaneously and three openings between jaw are increased, drill bit is inserted in the hole of the present utility model then, described protheca (2) again turns clockwise, thereby driving described screw (3) rotates, make described three jaws (4) move downward and drill bit is clamped, can carry out drilling.
The foregoing description is only for the usefulness that the utility model is described; and be not to be to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technical schemes that are equal to also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (6)
1, a kind of hand fastening drill clutch, comprise drill body (1), be placed on described drill body (1) front end protheca (2), be arranged at the screw (3) of described protheca (2) rear end and be installed on three jaws (4) in three uniform inclined holes on the described drill body (1), described three jaws (4) and screw (3) are by being threaded, the rear end of described screw (3) is provided with thrust bearing (6), the rear end of described drill body (1) is equipped with back cover (8), it is characterized in that: be provided with at least one pair of parallel plane that cooperatively interacts (31,32) between described protheca (2) and the screw (3).
2, a kind of hand fastening drill clutch according to claim 1 is characterized in that: the gabarit of described screw (3) is shaped as tetragonal body or hexahedron, and described protheca (2) inside correspondingly is provided with cubic hole with matching or hexagonal hole.
3, a kind of hand fastening drill clutch according to claim 1 and 2 is characterized in that: described screw (3) is made up of two halves, by a steel bushing (5) double half hitch is integrated.
4, a kind of hand fastening drill clutch according to claim 1 is characterized in that: the rear end of described thrust bearing (6) is provided with back-up ring (7).
5, a kind of hand fastening drill clutch according to claim 1 is characterized in that: the interstage sleeve (9) that is provided with between described protheca (2) front end and the drill body (1).
6, a kind of hand fastening drill clutch according to claim 1 is characterized in that: the outer round surface of described protheca (2) and back cover (8) is respectively equipped with some projectioies and groove (21) and (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257933 CN2440611Y (en) | 2000-10-19 | 2000-10-19 | Hand fastened drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257933 CN2440611Y (en) | 2000-10-19 | 2000-10-19 | Hand fastened drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2440611Y true CN2440611Y (en) | 2001-08-01 |
Family
ID=33614349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00257933 Expired - Fee Related CN2440611Y (en) | 2000-10-19 | 2000-10-19 | Hand fastened drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2440611Y (en) |
-
2000
- 2000-10-19 CN CN 00257933 patent/CN2440611Y/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 | ||
| 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 |