CN2578023Y - Improved hand-operated drill chuck - Google Patents
Improved hand-operated drill chuck Download PDFInfo
- Publication number
- CN2578023Y CN2578023Y CN 02285501 CN02285501U CN2578023Y CN 2578023 Y CN2578023 Y CN 2578023Y CN 02285501 CN02285501 CN 02285501 CN 02285501 U CN02285501 U CN 02285501U CN 2578023 Y CN2578023 Y CN 2578023Y
- Authority
- CN
- China
- Prior art keywords
- drill body
- screw
- protheca
- drill
- hand fastening
- 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 relates to an improved hand fastening drill chuck. The utility model comprises a hollow drill body, wherein, three inclined holes are arranged inside the drill body in an equidistant mode along circumferential direction. One clamping jaw is arranged inside each inclined hole in a sliding mode. The middle part of the drill body is provided with a screw nut which is mutually connected with each clamping jaw through screw threads. The front end of the drill body is provided with one front sleeve, the back end of the drill body is provided with a back sleeve, and torque can be transferred to the screw nut by the front sleeve. The middle part of the drill body forms a step part which is extended outwards along radial direction, and the back end surface of the step part forms a convex shoulder. The back end of the front sleeve forms a flange which is extended inwards along radial direction, and a flange seat leans against the convex shoulder. The hand fastening drill chuck has the advantages that the processing of the drill body of the hand fastening drill chuck is simple, the installation of the front sleeve is convenient, and the front sleeve can not generate radial shake when the drill chuck is operated.
Description
Technical field:
The utility model relates to a kind of improved 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.
Background technology:
The hand fastening drill clutch that is used for clamping drilling bit generally comprises drill body, jaw, screw, protheca and back cover, but hand fastening drill clutch ubiquity of the prior art many deficiencies, 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 inner surface of protheca front end is formed with annular protrusion, be provided with annular groove with this protruding corresponding position on the drill body, by the cooperate axial location that realize protheca of above-mentioned annular protrusion with groove.The shortcoming of this hand fastening drill clutch is: because the existence of annular protrusion and groove, make that not only the processing of drill body is comparatively complicated, the installation of protheca is inconvenience comparatively, and because the protheca rear end does not have axial positioning structure, thereby drill chuck when work protheca still can produce bigger radially rocking.
The utility model content:
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of improved drill chuck is provided, and not only the processing of drill body is comparatively easy for it, and the installation of protheca is comparatively convenient, and protheca can not produce radially and rocks during drill chuck work.
According to the improved 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; The front end of described drill body is provided with a protheca, and the rear end is equipped with a back cover, and described protheca passes to screw with moment of torsion; The middle part of described drill body is formed with a step part that extends radially outward, and the rear end face of described step part forms convex shoulder; The rear end of described protheca is formed with a flange that radially extends internally, and described flanged housing leans against on the described convex shoulder.
A kind of improved hand fastening drill clutch that provides according to the utility model also has following attached technical characterictic:
In a kind of embodiment that the utility model provides, the inner surface of described flange is the part of taper seat.
In the another kind of embodiment that the utility model provides, the inner surface of described flange is made of a part of taper seat and a face of cylinder that is positioned at this part taper seat front end.
Described step part has a front end face relative with the rear end face of described screw, is processed with the circular orbit of depression on this surface or the described screw rear end face on the other side, is placed with a plurality of balls in the described circular orbit.
Described screw is a two halves formula structure, and its outer surface is with a nut sleeve, and interference fit between described nut sleeve and the described screw is provided with the structure of transmitting moment of torsion between described protheca and the described nut sleeve.
The gabarit of described nut sleeve is shaped as gengon, and described protheca inside correspondingly is formed with polygon hole with matching.
The shape of cross section in described gengon and polygon hole is roughly regular hexagon.
Described back cover comprises a perisporium, the rear end of this perisporium is formed with an end wall that radially extends internally, be formed with an endoporus on this end wall, the end portion of contiguous this endoporus of this end wall is formed with a flange, and the lower surface of this flange rests against described drill body rear end on the end face of the convex shoulder that outer surface extends radially outward.
The external peripheral surface of described protheca and back cover has been formed separately some fins and groove.
A kind of improved hand fastening drill clutch that provides according to the utility model has following advantage with respect to prior art: owing to adopted the version that flange is set in the protheca rear end to realize the axial location of protheca, annular protrusion of the prior art and groove structure have not only been saved, make that the processing of drill body is comparatively easy, the installation of protheca is also comparatively convenient; And drill chuck when work protheca can not produce radially and rocks.
Description of drawings:
The further feature and advantage of the utility model with the embodiment that provides in conjunction with the accompanying drawings, describe in detail.Wherein:
Fig. 1 for according to a kind of embodiment of the improved hand fastening drill clutch that provides of the present utility model partly cut open cutaway view, the internal structure and the outer shape of this drill chuck is shown;
Fig. 2 is the cutaway view along A-A among Fig. 1, and the structure of transmitting moment of torsion between protheca and the nut sleeve is shown.
The specific embodiment:
Before describing the utility model in detail, define relational language earlier:
Alleged " front end " of the utility model means in the hand fastening drill clutch, an end of each jaw clamping drilling bit, i.e. lower end among Fig. 1;
Alleged " rear end " of the utility model mean 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.
Referring to Fig. 1, as a kind of embodiment of the present utility model, improved hand fastening drill clutch as shown in the figure 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; 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, and described protheca 4 passes to screw 3 with moment of torsion.Its concrete structure is: described screw 3 is two halves formula structure, its outer surface is with a nut sleeve 31, interference fit between described nut sleeve 31 and the described screw 3, be provided with the structure of transmitting moment of torsion between described protheca 4 and the described nut sleeve 31, as shown in Figure 2, in the embodiment that the utility model provides, the gabarit of described nut sleeve 31 is shaped as gengon, and described protheca 4 inside correspondingly are formed with polygon hole with matching; The shape of cross section in described gengon and polygon hole is roughly regular hexagon.When rotation protheca 4, by said structure moment of torsion is passed to nut sleeve 31, because nut sleeve 31 and screw 3 interference fit, thereby drive screw 3 rotations.
In the foregoing description that provides, the middle part of described drill body 1 is formed with a step part that extends radially outward 11, and the rear end face of described step part 11 forms convex shoulder; The rear end of described protheca 4 is formed with a flange that radially extends internally 41, and described flange 41 rests against on the described convex shoulder, thereby realizes the axial location of protheca, and makes that protheca can not produce bigger radially rocking when drill chuck was worked.
In the embodiment that the utility model provides, as shown in fig. 1, the inner surface of described flange 41 is made of a part of taper seat and a face of cylinder that is positioned at this part taper seat front end; The integral body that can certainly be the inner surface of described flange 41 is the part of taper seat all, can utilize the strain of protheca 4 rear ends that protheca 4 is connected on the described drill body 1 during installation, because the existence of described taper seat makes easier for installation.
As shown in fig. 1, in the embodiment that the utility model provides, described step part 11 have one with the rear end face facing surfaces of described screw 3, be processed with the circular orbit of depression on this surface or described screw 3 rear end faces on the other side, be placed with a plurality of balls 32 in the described circular orbit, can realize relatively rotating between described screw 3 and the drill body 1 by these balls.As shown in FIG., in the embodiment that the utility model provides, the circular orbit of described depression forms on the end face of step part of described drill body 1.
In the foregoing description that provides, as shown in fig. 1, described back cover 5 comprises a perisporium, the rear end of this perisporium is formed with an end wall that radially extends internally, be formed with an endoporus on this end wall, the end portion of contiguous this endoporus of this end wall is formed with a flange 51, and the lower surface of this flange 51 rests against described drill body 1 rear end on the end face of the convex shoulder 12 that outer surface extends radially outward.
As shown in fig. 1, in the foregoing description that provides, the external peripheral surface of described protheca 4 and back cover 5 has been formed separately some fins and groove 44,54, so that the operator installs and bit change more.
The use of improved hand fastening drill clutch of the present utility model is as follows: at first by the screwed hole on the drill body, improved hand fastening drill clutch of the present utility model is fastened on the drill press spindle, (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, described protheca 4 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.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 (9)
1, a kind of improved 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) interconnects by screw thread with each described jaw (2); 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), and described protheca (4) passes to screw (3) with moment of torsion; It is characterized in that: the middle part of described drill body (1) is formed with a step part that extends radially outward (11), and the rear end face of described step part (11) forms convex shoulder; The rear end of described protheca (4) is formed with a flange that radially extends internally (41), and described flange (41) rests against on the described convex shoulder.
2, improved hand fastening drill clutch according to claim 1 is characterized in that: the inner surface of described flange (41) is the part of taper seat.
3, improved hand fastening drill clutch according to claim 1 is characterized in that: the inner surface of described flange (41) is made of a part of taper seat and a face of cylinder that is positioned at this part taper seat front end.
4, according to claim 1 or 2 or 3 described improved hand fastening drill clutch, it is characterized in that: described step part (11) have one with the relative front end face of rear end face of described screw (3), be processed with the circular orbit of depression on this surface or described screw on the other side (3) rear end face, be placed with a plurality of balls (32) in the described circular orbit.
5, according to claim 1 or 2 or 3 described improved hand fastening drill clutch, it is characterized in that: described screw (3) is two halves formula structure, its outer surface is with a nut sleeve (31), interference fit between described nut sleeve (31) and the described screw (3) is provided with the structure of transmitting moment of torsion between described protheca (4) and the described nut sleeve (31).
6, improved hand fastening drill clutch according to claim 5 is characterized in that: the gabarit of described nut sleeve (31) is shaped as gengon, and described protheca (4) inside correspondingly is formed with polygon hole with matching.
7, improved hand fastening drill clutch according to claim 6, it is characterized in that: the shape of cross section in described gengon and polygon hole is roughly regular hexagon.
8, according to claim 1 or 2 or 3 described improved hand fastening drill clutch, it is characterized in that: described back cover (5) comprises a perisporium, the rear end of this perisporium is formed with an end wall that radially extends internally, be formed with an endoporus on this end wall, the end portion of contiguous this endoporus of this end wall is formed with a flange (51), and the lower surface of this flange (51) rests against described drill body (1) rear end on the end face of the convex shoulder (12) that outer surface extends radially outward.
9, according to claim 1 or 2 or 3 described improved hand fastening drill clutch, it is characterized in that: the external peripheral surface of described protheca (4) and back cover (5) has been formed separately some fins and groove (44,54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285501 CN2578023Y (en) | 2002-11-14 | 2002-11-14 | Improved hand-operated drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285501 CN2578023Y (en) | 2002-11-14 | 2002-11-14 | Improved hand-operated drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578023Y true CN2578023Y (en) | 2003-10-08 |
Family
ID=33746492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02285501 Expired - Fee Related CN2578023Y (en) | 2002-11-14 | 2002-11-14 | Improved hand-operated drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578023Y (en) |
-
2002
- 2002-11-14 CN CN 02285501 patent/CN2578023Y/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: 20050916 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050916 Address after: 318050 long road hi tech Zone, Lunan Road, Luqiao District, Zhejiang, Taizhou Patentee after: Sanou Machinery Co., Ltd., Zhejiang Address before: 318050 long road, science and technology zone, 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: 20031008 Termination date: 20091214 |