CN107138774B - Self-locking drill chuck - Google Patents
Self-locking drill chuck Download PDFInfo
- Publication number
- CN107138774B CN107138774B CN201710485677.2A CN201710485677A CN107138774B CN 107138774 B CN107138774 B CN 107138774B CN 201710485677 A CN201710485677 A CN 201710485677A CN 107138774 B CN107138774 B CN 107138774B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- self
- locking
- clutch
- clutch sleeve
- 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.)
- Active
Links
- 230000013011 mating Effects 0.000 claims 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Boring (AREA)
Abstract
The invention provides a self-locking drill chuck, which comprises a drill body, a nut, clamping jaws, a rotatable front sleeve and a self-locking structure, wherein the nut is connected with the front sleeve. The self-locking mechanism can realize a self-locking function, has longer service life and stronger self-locking reliability when the drill chuck works at a high speed.
Description
Technical Field
The invention relates to a self-locking drill chuck.
Background
In the prior art, a drill body, clamping jaws and nuts are arranged in a drill chuck, and the clamping jaws are driven to move forwards or backwards by rotating the nuts so as to clamp or loosen a drilling tool. The self-locking structure in the drill chuck is a structure for preventing the drill chuck from being loosened by the reaction force applied to the drill chuck during operation, and is generally matched by a part with a spring piece and teeth on the drill body.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the self-locking drill chuck, which can reliably keep a self-locking state in the work of the drill chuck and is more durable. For this purpose, the invention adopts the following technical scheme:
the utility model provides a self-locking drill chuck, includes the brill body, nut, clamping jaw, rotatable preceding cover, auto-lock structure, the nut is connected with preceding cover, its characterized in that auto-lock structure includes the round tooth that sets up in preceding cover rear portion inboard, but clutch cover, the auto-lock operation cover of fore-and-aft motion, clutch cover, auto-lock operation cover all are in the rear of preceding cover, clutch cover is by circumference location and can only slide fore-and-aft, the clutch cover sets up round tooth, the tooth of clutch cover can be in the axial motion extreme position of clutch cover in one direction and the tooth meshing of preceding cover to and the tooth disconnection of preceding cover after clutch cover opposite direction moves, auto-lock operation cover and clutch cover cooperation can drive clutch cover axial motion through the rotation of auto-lock operation cover in one direction, the drill chuck still is provided with the elastic component that drives clutch cover axial reset and moves.
Further, the drill chuck is provided with a fixed rear sleeve, the clutch sleeve is of a T-shaped structure, a small-diameter portion of the clutch sleeve penetrates through the self-locking operation sleeve to be matched with a rear sleeve key groove so as to fix the clutch sleeve in the circumferential direction, and the outer teeth are arranged on a large-diameter portion of the clutch sleeve.
Further, the self-locking operating sleeve is supported on the rear sleeve.
Further, a boss for supporting the gasket is arranged in the middle of the drill body, and the elastic component abuts against the back face of the boss.
Further, the matching part of the self-locking operation sleeve and the clutch sleeve comprises a first structure and a second structure, wherein the first structure is positioned in one of the self-locking operation sleeve and the clutch sleeve, the second structure is positioned in the other of the self-locking operation sleeve and the clutch sleeve, the first structure is arranged along the circumferential direction and provided with a platform and a slope connected with the platform and the bottom surface, and the second structure is arranged along the circumferential direction and provided with a platform and a slope connected with the platform and the bottom surface.
Further, the elastic member is a plurality of coil springs.
By adopting the technical scheme of the invention, the self-locking function can be realized, the nut is prevented from reversely loosening in the work of the drill chuck, the spring piece is prevented from being used as a self-locking part, the service life is longer, and the self-locking reliability is stronger when the drill chuck works at a high speed.
Drawings
Fig. 1 is a cross-sectional view of an embodiment provided by the present invention.
Fig. 2 is an exploded view of an embodiment provided by the present invention.
Fig. 3 is a schematic top view of the rear sleeve.
Fig. 4 is a schematic view of the front cover.
Fig. 5 is a schematic view of a clutch sleeve.
Fig. 6 is a schematic view of a self-locking operating sleeve.
Fig. 7 is a schematic top view of the self-locking operating sleeve.
Detailed Description
Reference is made to the accompanying drawings. The self-locking drill chuck provided by the invention comprises a drill body 6, a nut 9, clamping jaws 5, a rotatable front sleeve 10 and a self-locking structure, wherein the nut 9 and the front sleeve 10 can be connected in a key slot, interference and other modes, and the front sleeve can drive the nut to rotate. The self-locking structure comprises a circle of teeth 101, a clutch sleeve 2 and a self-locking operation sleeve 3, wherein the circle of teeth 101 and the clutch sleeve 2 are arranged on the inner side of the rear part of the front sleeve, the clutch sleeve 2 and the self-locking operation sleeve 3 are arranged at the rear part of the front sleeve 10, the clutch sleeve 2 is circumferentially positioned and can only slide forwards and backwards, the clutch sleeve 2 is provided with a circle of teeth 23, the teeth 23 can be meshed with the teeth 101 at the axial movement limit position of the clutch sleeve in one direction, and can be separated from the teeth 101 after the clutch sleeve 2 moves in the opposite direction, the self-locking operation sleeve 3 and the clutch sleeve 2 are matched to drive the clutch sleeve to axially move through the rotation of the self-locking operation sleeve 3 in one direction, and the drill chuck is further provided with an elastic component 4 for driving the clutch sleeve 2 to axially reset.
The clutch sleeve 2 can be fixed in the axial direction and the self-locking operation sleeve can be positioned in the axial direction by being directly matched with the drill body, and can also be matched with a part fixed on the drill body.
The drill chuck is provided with a fixed rear sleeve 1, the rear sleeve 1 can be fixed with the drill body in an interference fit or flat position and clamping ring axial positioning mode, the clutch sleeve 2 is of a T-shaped structure, a small diameter part of the clutch sleeve passes through the self-locking operation sleeve 3 and is matched with a rear sleeve key slot so as to fix the clutch sleeve 2 in the circumferential direction, an external tooth 23 is arranged on a large diameter part of the clutch sleeve, a reference numeral 21 is a key for carrying out key slot matching, and a reference numeral 11 is a slot for carrying out key slot matching on the rear sleeve.
The self-locking operation sleeve 3 is supported on the rear sleeve 1, and the elastic component 4 is a plurality of disc spring coils. The middle part of the drill body is provided with a boss 61 for supporting the gasket 7, and the elastic part 4 is abutted against the back surface of the boss 61. The nut is supported on a washer 7 by means of a bearing 8.
After the drill chuck clamps the drill bit, the clutch sleeve is driven to axially forward by rotating the self-locking operation sleeve 3 in one direction, the external teeth 23 are meshed with the internal teeth 101, and the self-locking state is brought into, when the self-locking operation sleeve 3 rotates reversely, the clutch sleeve is driven by the elastic component 4 to axially reset, and the external teeth 23 are disconnected from the internal teeth 101.
The matching part of the self-locking operation sleeve 3 and the clutch sleeve 2 comprises a first structure and a second structure, the clutch sleeve at the first structure is arranged on the self-locking operation sleeve, the second structure is also interchangeable, the first structure is arranged along the circumferential direction and is provided with a platform 24 and a slope 22 connected with the platform 24 and the bottom surface, the second structure is arranged along the circumferential direction and is provided with a platform 32 and a slope 31 connected with the platform 32 and the bottom surface, and when the drill chuck is positioned between the platform 24 and the platform 32, the drill chuck enters a self-locking state.
The above embodiments are merely examples of the present invention, but the present invention is not limited thereto, and any changes or modifications made by those skilled in the art are included in the scope of the present invention.
Claims (5)
1. The self-locking drill chuck is characterized in that the self-locking structure comprises a circle of teeth arranged on the inner side of the rear part of the front sleeve, a clutch sleeve capable of moving forwards and backwards, and a self-locking operation sleeve, wherein the clutch sleeve and the self-locking operation sleeve are positioned behind the front sleeve, the clutch sleeve is circumferentially positioned and can only slide forwards and backwards, the clutch sleeve is provided with a circle of teeth, the circle of teeth of the clutch sleeve can be meshed with the teeth of the front sleeve at the axial movement limit position of the clutch sleeve in one direction, and can be separated from the teeth of the front sleeve after the clutch sleeve moves in the opposite direction, the self-locking operation sleeve is matched with the clutch sleeve and can drive the clutch sleeve to axially move through the rotation of the self-locking operation sleeve in one direction, and the drill chuck is also provided with an elastic part for driving the clutch sleeve to axially reset;
the drill chuck is provided with a fixed rear sleeve, the clutch sleeve is of a T-shaped structure, a small-diameter part of the clutch sleeve penetrates through the self-locking operation sleeve and is matched with a key groove of the rear sleeve so as to fix the clutch sleeve in the circumferential direction, and a large-diameter part of the clutch sleeve is provided with a circle of teeth of the clutch sleeve.
2. A self-locking drill chuck according to claim 1, wherein the self-locking operating sleeve is supported on the rear sleeve.
3. The self-locking drill chuck according to claim 1, wherein the drill body is provided with a boss for supporting a washer in the middle thereof, and the elastic member abuts against the back surface of the boss.
4. The self-locking drill chuck of claim 1, wherein the mating portion of the self-locking sleeve and clutch sleeve comprises a first structure and a second structure, the first structure being located in one of the self-locking sleeve and clutch sleeve, the second structure being located in the other of the self-locking sleeve and clutch sleeve, the first structure being circumferentially disposed with a land and land-and-land-connected ramp, the second structure being circumferentially disposed with a land and land-and-land-connected ramp.
5. A self-locking drill chuck according to claim 1, wherein the resilient member is a plurality of disc coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710485677.2A CN107138774B (en) | 2017-06-23 | 2017-06-23 | Self-locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710485677.2A CN107138774B (en) | 2017-06-23 | 2017-06-23 | Self-locking drill chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107138774A CN107138774A (en) | 2017-09-08 |
| CN107138774B true CN107138774B (en) | 2023-11-28 |
Family
ID=59782925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710485677.2A Active CN107138774B (en) | 2017-06-23 | 2017-06-23 | Self-locking drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107138774B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064782B (en) * | 2019-04-28 | 2024-04-19 | 山东威达机械股份有限公司 | Chuck with impact function |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2832373Y (en) * | 2005-09-09 | 2006-11-01 | 浙江三鸥机械股份有限公司 | Locking drill chuck |
| CN101081444A (en) * | 2007-04-20 | 2007-12-05 | 浙江三鸥机械股份有限公司 | Self-locking type clamping head of hand-locking drill |
| CN201012399Y (en) * | 2007-04-10 | 2008-01-30 | 浙江三鸥机械股份有限公司 | Novel self-locking type clamping head of closefisted drill |
| CN201055921Y (en) * | 2007-06-29 | 2008-05-07 | 浙江三鸥机械股份有限公司 | Self-locking type clamping head of hand-locking drill |
| CN201091926Y (en) * | 2007-08-27 | 2008-07-30 | 李香玉 | Clamping device |
| CN201091927Y (en) * | 2007-05-30 | 2008-07-30 | 浙江三鸥机械股份有限公司 | Self-locking hand-holding drill chuck |
| CN201201061Y (en) * | 2008-05-09 | 2009-03-04 | 浙江三鸥机械股份有限公司 | Self-locking type hand fastened drill chuck |
| CN203371090U (en) * | 2013-07-19 | 2014-01-01 | 威海达旺五金制品有限责任公司 | Self-tightening and self-locking drill chuck |
| CN205834284U (en) * | 2016-05-20 | 2016-12-28 | 浙江三鸥机械股份有限公司 | A kind of novel Self-locking drill-chuck |
| CN106424798A (en) * | 2016-02-05 | 2017-02-22 | 浙江三鸥机械股份有限公司 | Self-locking type drill chuck |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2633481Y (en) * | 2003-07-17 | 2004-08-18 | 山东威达机械股份有限公司 | locking type drill chuck |
| DE202009005187U1 (en) * | 2008-11-24 | 2009-10-29 | Zhejiang Sanou Machinery Co. Ltd., Taizhou | Keyless drill chuck with self-locking |
-
2017
- 2017-06-23 CN CN201710485677.2A patent/CN107138774B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2832373Y (en) * | 2005-09-09 | 2006-11-01 | 浙江三鸥机械股份有限公司 | Locking drill chuck |
| WO2007028287A1 (en) * | 2005-09-09 | 2007-03-15 | Zhejiang Sanou Machinery Co., Ltd. | A self-locking drill chuck |
| CN201012399Y (en) * | 2007-04-10 | 2008-01-30 | 浙江三鸥机械股份有限公司 | Novel self-locking type clamping head of closefisted drill |
| CN101081444A (en) * | 2007-04-20 | 2007-12-05 | 浙江三鸥机械股份有限公司 | Self-locking type clamping head of hand-locking drill |
| CN201091927Y (en) * | 2007-05-30 | 2008-07-30 | 浙江三鸥机械股份有限公司 | Self-locking hand-holding drill chuck |
| CN201055921Y (en) * | 2007-06-29 | 2008-05-07 | 浙江三鸥机械股份有限公司 | Self-locking type clamping head of hand-locking drill |
| CN201091926Y (en) * | 2007-08-27 | 2008-07-30 | 李香玉 | Clamping device |
| CN201201061Y (en) * | 2008-05-09 | 2009-03-04 | 浙江三鸥机械股份有限公司 | Self-locking type hand fastened drill chuck |
| CN203371090U (en) * | 2013-07-19 | 2014-01-01 | 威海达旺五金制品有限责任公司 | Self-tightening and self-locking drill chuck |
| CN106424798A (en) * | 2016-02-05 | 2017-02-22 | 浙江三鸥机械股份有限公司 | Self-locking type drill chuck |
| CN205834284U (en) * | 2016-05-20 | 2016-12-28 | 浙江三鸥机械股份有限公司 | A kind of novel Self-locking drill-chuck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107138774A (en) | 2017-09-08 |
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