CN203003227U - Self-fastening type drill chuck - Google Patents
Self-fastening type drill chuck Download PDFInfo
- Publication number
- CN203003227U CN203003227U CN 201220730792 CN201220730792U CN203003227U CN 203003227 U CN203003227 U CN 203003227U CN 201220730792 CN201220730792 CN 201220730792 CN 201220730792 U CN201220730792 U CN 201220730792U CN 203003227 U CN203003227 U CN 203003227U
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- CN
- China
- Prior art keywords
- drill
- transmission connection
- drill body
- self
- axle
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- Expired - Fee Related
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Abstract
The utility model provides a self-fastening type drill chuck which comprises a drill body, a rear sleeve, a front sleeve, three clamping jaws, a nut and a decorative sleeve. The three clamping jaws are arranged in inclined holes in the drill body. The nut is arranged in the middle portion of the drill body, fixedly connected with the rear sleeve and meshed with threads of the three clamping jaws. The self-fastening type drill chuck is characterized by further comprising a transmission connecting shaft which comprises a limit boss and a shaft body portion. A section, perpendicular to an axis, of the shaft body portion is restricted in a non-circular shape. A through hole in the same shape with the section of the shaft body portion is formed in the rear sleeve. An axial center hole in the same shape with the section of the shaft body portion is formed at the rear end of the drill body. The shaft body portion penetrates through the through hole of the rear sleeve. The limit boss is connected with the rear sleeve through a spacer. The shaft body portion of the transmission connecting shaft is inserted in the axial center hole of the drill body. When the transmission connecting shaft rotates, the rear sleeve and the drill body rotate along with the transmission connecting shaft. The transmission connecting shaft is further provided with an axial screw hole. A transmission connecting sleeve is connected with an outer main body through threads. The self-fastening type drill chuck greatly improves reliability and durability of drill chuck performance.
Description
Technical field
The utility model relates to a kind of drill chuck, particularly a kind of self-tightening drill chuck.
Background technology
often use lathe in the production and processing activity, the instruments such as electric drill are holed, the operations such as milling, be installed in and be used for clamping drilling bit on these device Host working shafts, the drill chuck of the cutters such as milling cutter has experienced long-term application and improvement, but still there are many deficiencies, such as self-tightening drill chuck commonly used, comprise the drill chuck body, be rotatably connected in the pushing ram in the drill chuck body, be connected in the pushing disc of pushing ram lower end, wedge jaw and the metal-coating that walks in order to limit the wedge jaw, this drill chuck has function of self-tightening, chucking power is large, be difficult for loosening, precision and stability is high, but wedge jaw processing difficulties, yield rate is low, weight is large, complex structure, production cost is high, the miniaturization difficulty is large, can only have relatively high expectations at precision and stability, use in the place that equipment is larger, also there is complex structure in the keyless drill chuck of other commercially available technical scheme, the manufacturing process complex and expensive, the problems such as poor durability, usually reduce gradually chucking power along with the prolongation of working running time.
Summary of the invention
Therefore, main purpose of the present utility model is to solve that the existing structure of existing self-tightening drill chuck is more complicated, reliability is not enough, the deficiencies such as poor durability.
for realizing above purpose, the technical scheme that the utility model adopts is to provide a kind of self-tightening drill chuck, comprise: a drill body, one rear cover, one protheca, three jaws, one nut and a sheathing, wherein said three jaws are located in three inclined holes set on described drill body, described nut is located at the middle part of described drill body, be fixedly connected with described rear cover, simultaneously with the screw-threaded engagement of described three jaws, the riveting of described drill body front end has sheathing, described protheca and described rear cover interconnect and wrap up described drill body, nut and three jaws, it is characterized in that, described self-tightening drill chuck also comprises the axle that is in transmission connection, the described axle that is in transmission connection comprises positive stop lug boss and axis body section, described axis body section is defined as perpendicular to the cross sectional shape of axis and is not circular, put after described and offer and the consistent through hole of axis body section's cross sectional shape, described drill body rear end is provided with and the consistent axial center hole of axis body section's cross sectional shape, the axis body section of the described axle that is in transmission connection is arranged in the through hole that puts after described, described positive stop lug boss be connected rear inner room and connect by pad, the axis body section of the described axle that is in transmission connection insert on described drill body axial center hole be connected drill body and connect, when the described axle that is in transmission connection rotates, described rear cover and drill body can rotate thereupon, described axle and the described rear cover link of being in transmission connection also is provided with an axial screw, the described axle that is in transmission connection is connected with outer body by screw thread.
Optionally, described drill body rear end axial center hole and the described axle that is in transmission connection are that matched in clearance is installed.
Optionally, described protheca is connected with rear cover riveted.
After having adopted technique scheme, the utility model compared with prior art, the torsion that utilization produces in the work running is with the transmission connecting axle that is dynamically connected to make nut rotation produce jaw to the clamping force of gripped object, has greatly promoted reliability and the durability of drill chuck performance.It is simple and reasonable, and production technology is simple, and very high economic cost performance is also arranged.
Description of drawings
Fig. 1 is assembly structure schematic diagram of the present utility model
Fig. 2 is decomposition texture schematic diagram of the present utility model
Fig. 3 is the axial section that the utility model transmits connecting axle
Fig. 4 is the structural representation that the utility model transmits connecting axle
The specific embodiment
Below in conjunction with the drawings and specific embodiments, to the self-tightening drill chuck further description of proposition that the utility model adopts.
please refer to Fig. 1, Fig. 2, the described a kind of self-tightening drill chuck of the present embodiment, comprise: a drill body 3, one rear cover 4, one protheca 6, three jaws 7, one nut 5 and a sheathing 8, wherein said three jaws 7 are located in three inclined holes set on described drill body 3, described nut 5 is located at the middle part of described drill body 3, be fixedly connected with described rear cover 4, simultaneously with the screw-threaded engagement of described three jaws 7, described drill body 3 front end rivetings have sheathing 8, described protheca 6 and described rear cover 4 interconnect and wrap up described drill body 3, nut 5 and three jaws 7, it is characterized in that, described self-tightening drill chuck also comprises the axle 1 that is in transmission connection, the described axle 1 that is in transmission connection comprises positive stop lug boss and axis body section.Described axis body section is defined as perpendicular to the cross sectional shape of axis and is not circular, sees also its cross sectional shape of Fig. 4 and is circle and cut the twice circular arc and form, and other shapes such as rectangle perhaps have the irregularly shaped of protuberance also can select.offer on described rear cover 4 and the consistent through hole of axis body section's cross sectional shape, described drill body 3 rear ends are provided with and the consistent axial center hole of axis body section's cross sectional shape, the axis body section of the described axle 1 that is in transmission connection is arranged in the through hole on described rear cover 4, described positive stop lug boss be connected 4, rear cover and connect by pad 2, the axis body section of the described axle 1 that is in transmission connection insert on described drill body 3 axial center hole be connected drill body 3 and connect, when the described axle 1 that is in transmission connection rotates, the rotation thereupon of described rear cover 4 and drill body 3, the described axle 1 that is in transmission connection also is provided with an axial screw with described rear cover 4 links, the described axle 1 that is in transmission connection is connected with outer body by screw thread.
Described drill body 3 rear end axial center holes and the described axle 1 that is in transmission connection are installed for matched in clearance.
Described protheca 6 is connected with rear cover 4 riveteds.
The following jaw 7 of operation principle of the present utility model clamps gripped object in operation process, produce reverse clamping force by the axle 1 that is in transmission connection and drive nut 5 backwards rotation, thereby produce with held object and rotate the identical chucking power of torsion, make the chucking power of 7 pairs of gripped objects of jaw along with rotating speed and torsion press from both sides tighter and tighter.The utility model is simple in structure, and transmission is reasonable, has both had function of self-tightening, can effectively limit again the Automatic-clamping power of its generation, and is easy to loading and unloading, laborsaving, uses safety, can or not impact because of vibration making drilling tool loosening, and reliable operation is applicable to the clamping of various drilling tools.
Above in order to illustrate and to describe to the description of the utility model preferred embodiment, be not want the utility model limit or be confined to disclosed concrete form, obviously, may make many modifications and variations, these modifications and variations may be obvious to those skilled in the art, within should being included in the scope of the present utility model by the appended claims definition.
Claims (3)
1. self-tightening drill chuck, comprise: a drill body, one rear cover, one protheca, three jaws, one nut and a sheathing, wherein said three jaws are located in three inclined holes set on described drill body, described nut is located at the middle part of described drill body, be fixedly connected with described rear cover, simultaneously with the screw-threaded engagement of described three jaws, the riveting of described drill body front end has sheathing, described protheca and described rear cover interconnect and wrap up described drill body, nut and three jaws, it is characterized in that, described self-tightening drill chuck also comprises the axle that is in transmission connection, the described axle that is in transmission connection comprises positive stop lug boss and axis body section, described axis body section is defined as perpendicular to the cross sectional shape of axis and is not circular, put after described and offer and the consistent through hole of axis body section's cross sectional shape, described drill body rear end is provided with and the consistent axial center hole of axis body section's cross sectional shape, the axis body section of the described axle that is in transmission connection is arranged in the through hole that puts after described, described positive stop lug boss be connected rear inner room and connect by pad, the axis body section of the described axle that is in transmission connection insert on described drill body axial center hole be connected drill body and connect, when the described axle that is in transmission connection rotates, described rear cover and drill body can rotate thereupon, described axle and the described rear cover link of being in transmission connection also is provided with an axial screw, the described axle that is in transmission connection is connected with outer body by screw thread.
2. a kind of self-tightening drill chuck according to claim 1, is characterized in that described drill body rear end axial center hole and the described axle that is in transmission connection are that matched in clearance is installed.
3. a kind of self-tightening drill chuck according to claim 1, is characterized in that described protheca is connected with rear cover riveted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730792 CN203003227U (en) | 2012-12-27 | 2012-12-27 | Self-fastening type drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730792 CN203003227U (en) | 2012-12-27 | 2012-12-27 | Self-fastening type drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203003227U true CN203003227U (en) | 2013-06-19 |
Family
ID=48594860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220730792 Expired - Fee Related CN203003227U (en) | 2012-12-27 | 2012-12-27 | Self-fastening type drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203003227U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028765A (en) * | 2012-12-27 | 2013-04-10 | 浙江贝力得夹头工业有限公司 | Self-tightening drill chuck |
| CN105935818A (en) * | 2016-06-30 | 2016-09-14 | 吴中区横泾博尔机械厂 | Screw tap connector of solenoid valve deck machining equipment |
| CN105965073A (en) * | 2016-06-30 | 2016-09-28 | 吴中区横泾博尔机械厂 | Drill bit connector of electromagnetic valve cover machining equipment |
| JP2019520999A (en) * | 2016-06-03 | 2019-07-25 | 柳 堯 亭Ｌｉｕ， Ｙａｏｔｉｎｇ | Gear self-tightening drill chuck |
-
2012
- 2012-12-27 CN CN 201220730792 patent/CN203003227U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028765A (en) * | 2012-12-27 | 2013-04-10 | 浙江贝力得夹头工业有限公司 | Self-tightening drill chuck |
| JP2019520999A (en) * | 2016-06-03 | 2019-07-25 | 柳 堯 亭Ｌｉｕ， Ｙａｏｔｉｎｇ | Gear self-tightening drill chuck |
| CN105935818A (en) * | 2016-06-30 | 2016-09-14 | 吴中区横泾博尔机械厂 | Screw tap connector of solenoid valve deck machining equipment |
| CN105965073A (en) * | 2016-06-30 | 2016-09-28 | 吴中区横泾博尔机械厂 | Drill bit connector of electromagnetic valve cover machining equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |