CN2480086Y - self-locking drill chuck - Google Patents
self-locking drill chuck Download PDFInfo
- Publication number
- CN2480086Y CN2480086Y CN 01243399 CN01243399U CN2480086Y CN 2480086 Y CN2480086 Y CN 2480086Y CN 01243399 CN01243399 CN 01243399 CN 01243399 U CN01243399 U CN 01243399U CN 2480086 Y CN2480086 Y CN 2480086Y
- Authority
- CN
- China
- Prior art keywords
- screw
- drill
- drive part
- gear
- chuck
- 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
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 210000000078 claw Anatomy 0.000 claims description 19
- 241000237942 Conidae Species 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 9
- 238000005192 partition Methods 0.000 abstract 1
- 241001656951 Protheca Species 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Gripping On Spindles (AREA)
Abstract
The utility model relates to a self-locking drill chuck, including boring the body, clamping jaw, screw, outer sleeve spare, bore the body rear end and be equipped with the axial hole with driving tool's drive shaft joint, three clamping jaw is installed respectively in boring the body the inclined hole of three partition, screw and the clamping jaw meshing of installing in boring the body inclined hole are equipped with a rotatable gear between boring the body thrust surface and the screw, are equipped with the rolling element between gear and the screw, and a fixed annular driving piece of screw external connection, annular driving piece and outer sleeve spare joint. The utility model has the advantages of self-locking function can not make the drilling tool not hard up because of vibration or impact during the use, it is rational in infrastructure to have, stable performance, reliable operation, safe in utilization, is applicable to the clamping of various drilling tools.
Description
The utility model relates to a kind of drilling tool clamping device, specifically a kind of self-locking clamping chuck of drill bit.
We know, existing drill chuck is generally by drill body, jaw, screw, compositions such as overcoat, overcoat can comprise protheca again, the back cover, the back cover, bearing gasket interference respectively is connected on the drill body, and three jaws are installed in respectively in the inclined hole of three five equilibriums on the drill body, screw is installed in the screw groove of drill body, threaded engagement on screw and the jaw forms thread transmission, and the screw outside also can be provided with nut sleeve, nut sleeve and screw interference fit, nut sleeve is provided with protheca outward, the protheca inwall is provided with key, and nut sleeve is provided with keyway, and protheca is connected through key with nut sleeve, moving for preventing the protheca string, at drill body front end interference fit joint door, during use, hand is twisted the protheca rotation, protheca drives screw through nut sleeve and rotates, screw drives in the inclined hole of jaw on drill body through screw thread and moves forward and backward, thereby three-jaw is opened or closure, to reach the purpose of unclamping or clamping drilling tool, the deficiency of said structure is, drill chuck is when work, because vibration or impact, drill chuck is easily loosening, have a strong impact on operating efficiency, poor stability.
The purpose of this utility model is exactly to provide a kind of rational in infrastructure in order to overcome above-mentioned the deficiencies in the prior art, has auto-lock function, high efficiency, safe in utilization, self-locking clamping chuck of drill bit efficiently.
For achieving the above object, the technical solution of the utility model is: a kind of self-locking clamping chuck of drill bit, include drill body, jaw, screw, package assembly, the drill body rear end is provided with the axial hole that engages with the driving shaft of driven tool, three jaws are installed in respectively in the inclined hole of three five equilibriums in the drill body, screw and the jaw engagement that is installed in the drill body inclined hole, it is characterized in that being provided with between drill body thrust surface and the screw a rotating gear, be provided with rolling element between gear and the screw, the screw outside is connected and fixed an annular drive part, and annular drive part engages with package assembly.
Package assembly described in the utility model is selectable, can be the protheca of hand fastening drill clutch, also can be the overcoat of spanner drill chuck.The package assembly inwall is provided with several circumferential driver slots or drives key, be used for annular drive part on load connecting key or link slot engage, drive annular drive part and play rotation with one, the package assembly inwall also is provided with annular link slot.Described annular drive part is along being provided with several load connecting key or link slots on the circumference, load connecting key end is provided with connecting portion, is used for being connected with annular link slot, and guaranteeing does not have axially-movable between them.Annular drive part is used for and rotating gears engaged along being provided with several elastic claws on the circumference, and elastic claw also can be arranged on separately on the package assembly inwall.
The utility model is owing to adopt said structure, package assembly can drive annular drive part and rotate relative to drill body with screw, screw drives in the inclined hole of jaw on drill body through screw thread and moves forward and backward, thereby three-jaw is opened or closure, to reach the purpose of unclamping or clamping drilling tool.Elastic claw and be arranged on rotating gears engaged between drill body thrust surface and the screw particularly, the clamping process initial stage, gear, rolling element are along with annular drive part etc. rotates relative to drill body, when the force of sliding friction between gear and drill body thrust surface greater than elastic claw during to circumferencial direction component that gear applied, gear begins relative static with the drill body thrust surface.When continuing afterburning rotating jacket spare, the relative gear of rolling element begins to roll, and screw also begins to rotate relative to gear, clamping force be transformed into axial force on the screw by rolling element and gear transmission to the drill body thrust surface, motionless up to locking, reach the purpose of self-locking.When unclamping, as long as backward rotation package assembly, because the force of sliding friction of force of rolling friction under the same stress condition, therefore, under package assembly drives, the elastic claw of annular drive part is gear tooth motion and yielding relatively earlier, and screw is rotated relative to gear, afterwards, because the axial compressive force of screw and gear and drill body reduces, force of sliding friction between gear and drill body thrust surface reduces thereupon, and the package assembly band annular drive part, screw, elastic claw and gear and begun together to turn to and be totally released drilling tool, and it is laborsaving, easy that pine is unloaded.The utility model has overcome present drill chuck does not have locking device or the inconvenient deficiency of locking, and it manipulates quick and easy, has advantages such as rational in infrastructure, easy to assembly, stable performance, reliable operation, is applicable to the clamping of various drilling tools.
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is that the A-A of Fig. 1 is to schematic diagram;
Fig. 3 is a kind of annular drive part structural representation of the present utility model;
Fig. 4 is the schematic top plan view of Fig. 3;
Fig. 5 is the structural representation of the another kind of annular drive part of the utility model;
Fig. 6 is the schematic top plan view of Fig. 5;
Fig. 7 is the structural representation of another annular drive part of the utility model;
Fig. 8 is the structural representation of the utility model gear;
Fig. 9 is the schematic top plan view of Fig. 8;
Figure 10 is the structural representation of a kind of package assembly of the utility model;
Figure 11 is the schematic top plan view of Figure 10.
As shown in Figure 1 and Figure 2, a kind of self-locking clamping chuck of drill bit of the utility model, it is provided with drill body 1, screw 2, jaw 3, overcoat etc., the drill body rear end is provided with the axial hole that engages with the driving shaft of driven tool, three jaws 3 are installed in respectively in the inclined hole of three five equilibriums in the drill body 1, screw 2 and jaw 3 engagements that are installed in the drill body inclined hole, and overcoat comprises protheca 5, back cover 4, the pass of above-mentioned composition, structure and coupled parts is a prior art, and this does not describe in detail.
The characteristics of this self-locking clamping chuck of drill bit are to be provided with between drill body 1 thrust surface and the screw 2 a rotating gear 6, and this gear is drill body and screw motion relatively.Be provided with a rolling element 9 between gear and the screw, the screw outside is connected and fixed an annular drive part 7, and annular drive part 7 and package assembly---protheca 5 engages.
The described package assembly of this self-locking clamping chuck of drill bit---protheca 5 inwalls are provided with several circumferential driver slot 5-1, be used for annular drive part on load connecting key 7-1 engage, drive annular drive part and play rotation with one, package assembly---protheca 5 inwalls also are provided with annular link slot 5-2, as shown in figure 10, its front end also is provided with metal cone shell 8.
From Fig. 3, shown in Figure 4, described annular drive part is along being provided with several load connecting keys 7-1 on the circumference, and load connecting key end is provided with connecting portion 7-2, is used for being connected with annular link slot, and guaranteeing does not have axially-movable between them.Annular drive part is used for and rotating gears engaged along also being provided with several elastic claws 7-3 on the circumference.Elastic claw hook tip described in the utility model both sides profile becomes 20 ° of-60 ° of angles with the pawl point respectively with the gear centre line, and the form of gear tooth is corresponding with elastic claw pawl point profile, as Fig. 8, shown in Figure 9.
The utility model elastic claw also can be arranged on separately on the package assembly inwall, as Figure 10, shown in Figure 11.Corresponding with it annular drive part such as Fig. 5, shown in Figure 6, described annular drive part is along being provided with several load connecting keys 7-1 on the circumference, load connecting key end is provided with connecting portion 7-2, is used for being connected with annular link slot, and guaranteeing does not have axially-movable between them.
Fig. 7 is the structural representation of another annular drive part of the utility model, and as shown in Figure 7, it is provided with several elastic claws 7-3 along circumference, and does not have load connecting key 7-1, and correspondingly it can be provided with the load link slot, be used for protheca on the driving keyed engagement.
In the utility model when work,, package assembly---protheca 5 can drive annular drive part 7 and screw 2 and rotate relative to drill body, and screw 2 moves forward and backward in the inclined hole of screw thread drive jaw 3 on drill body 1.Elastic claw 7-3 and be arranged on rotating gear 6 engagement between drill body thrust surface and the screw particularly, the clamping process initial stage, gear 6, rolling element 9 are along with annular drive part 7 etc. rotates relative to drill body 1, when the force of sliding friction between gear 6 and drill body 1 thrust surface greater than elastic claw during to circumferencial direction component that gear applied, gear begins relative static with the drill body thrust surface.When continuing afterburning rotating jacket spare, the relative gear of rolling element begins to roll, and screw also begins to rotate relative to gear, clamping force be transformed into axial force on the screw by rolling element and gear transmission to the drill body thrust surface, motionless up to locking, reach the purpose of self-locking.When unclamping, as long as backward rotation package assembly, because the force of sliding friction of force of rolling friction under the same stress condition, therefore, under package assembly drives, the elastic claw of annular drive part is gear tooth motion and yielding relatively earlier, and screw is rotated relative to gear, afterwards, because the axial compressive force of screw and gear and drill body reduces, force of sliding friction between gear and drill body thrust surface reduces thereupon, and the package assembly band annular drive part, screw, elastic claw and gear and begun together to turn to and be totally released drilling tool, and it is laborsaving, easy that pine is unloaded.
The utility model is equally applicable to the spanner self-locking clamping chuck of drill bit, and its main The Nomenclature Composition and Structure of Complexes and the course of work and aforementioned self-locking clamping chuck of drill bit are basic identical, also should belong to protection domain of the present utility model.
The utlity model has locking function, use fast, convenient, can or not impact because of vibration making brill Tool is loosening, and it is excellent to have rational in infrastructure, easy to assembly, stable performance, reliable operation, use safety etc. Point is applicable to the clamping of various drilling tools.
Claims (10)
1, a kind of self-locking clamping chuck of drill bit, include drill body, jaw, screw, package assembly, the drill body rear end is provided with the axial hole that engages with the driving shaft of driven tool, three jaws are installed in respectively in the inclined hole of three five equilibriums in the drill body, screw and the jaw engagement that is installed in the drill body inclined hole is characterized in that being provided with a rotating gear between drill body thrust surface and the screw, are provided with rolling element between gear and the screw, the screw outside is connected and fixed an annular drive part, and annular drive part engages with package assembly.
2, self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that said package assembly inwall is provided with several circumferential driver slots.
3, self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that said package assembly inwall is provided with annular link slot.
4, keyless drill chuck as claimed in claim 1 is characterized in that said annular drive part upper edge circumference is provided with several load connecting keys, and load connecting key end is provided with connecting portion.
5, keyless drill chuck as claimed in claim 1 is characterized in that said annular drive part upper edge circumference is provided with several load connecting keys and several elastic claws, and load connecting key end is provided with connecting portion.
6, keyless drill chuck as claimed in claim 1 is characterized in that said annular drive part upper edge circumference is provided with several elastic claws.
7, keyless drill chuck as claimed in claim 1 is characterized in that said package assembly inwall is provided with elastic claw.
8,, it is characterized in that said elastic claw hook tip both sides profile becomes 20 ° of-60 ° of angles with the pawl point respectively with the gear centre line as claim 1,5 described keyless drill chucks.
9, keyless drill chuck as claimed in claim 1 is characterized in that said overcoat front portion is provided with the metal cone shell.
10, keyless drill chuck as claimed in claim 1 is characterized in that said rolling element is a bearing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01243399 CN2480086Y (en) | 2001-06-10 | 2001-06-10 | self-locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01243399 CN2480086Y (en) | 2001-06-10 | 2001-06-10 | self-locking drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2480086Y true CN2480086Y (en) | 2002-03-06 |
Family
ID=33655009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01243399 Expired - Fee Related CN2480086Y (en) | 2001-06-10 | 2001-06-10 | self-locking drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2480086Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2001
- 2001-06-10 CN CN 01243399 patent/CN2480086Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106424798B (en) * | 2016-02-05 | 2018-07-03 | 浙江三鸥机械股份有限公司 | A kind of Self-locking drill-chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG WEIDA MACHINERY CO., LTD. Free format text: FORMER NAME OR ADDRESS: WEIDA MACHINE TOOL GROUP CORP., SHANDONG |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Weida Machinery Co., Ltd., Shandong Patentee before: Weida Machine-Tool Group Co., Shandong |
|
| 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 |