CN104148712A - Impact-resistant locking type spanner drill chuck - Google Patents
Impact-resistant locking type spanner drill chuck Download PDFInfo
- Publication number
- CN104148712A CN104148712A CN201410408179.4A CN201410408179A CN104148712A CN 104148712 A CN104148712 A CN 104148712A CN 201410408179 A CN201410408179 A CN 201410408179A CN 104148712 A CN104148712 A CN 104148712A
- Authority
- CN
- China
- Prior art keywords
- gear ring
- drill body
- spanner
- steel ball
- chute
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
Abstract
The invention provides an impact-resistant locking type spanner drill chuck which comprises a drill body, a clamping jaw, an outer sleeve, a gear ring and a spanner. A first thrust surface and a second thrust surface are arranged on the drill body. A spanner hole is formed in the side face of the drill body. A locking mechanism is further arranged between the first thrust surface on the drill body and the gear ring and comprises a steel cushion and a steel ball. The steel cushion is located between the first thrust surface of the drill body and the gear ring. Multiple chutes with lead angles are formed in the end face, facing the steel cushion, of the gear ring circumferentially. The steel ball is located between the steel cushion and the gear ring. The steel ball is correspondingly placed in one chute and can move in the chute. When clamping operation is loosened, the steel ball moves in the direction from the shallow chutes to the deep chutes, so that locking operation is achieved, looseness of the clamping jaw is prevented, and the clamping firmness degree of the clamping jaw is increased. The impact-resistant locking type spanner drill chuck is reasonable in structure, convenient to operate and use and capable of preventing a drill bit from being loosened in the impact vibration process.
Description
Technical field
The present invention relates to drilling attachment in a kind of hardware & tools and machine tool, specifically a kind of shock-resistant lock spanner drill chuck.
Background technology
Existing drill chuck has the jaw of making and stretches out with clamping device, and jaw is retracted with the function of back off tool, and in order to prevent that jaw from getting loose when the clip position, many drill chucks are also provided with locking mechanism, to prevent that jaw from getting loose down in working order.But, the locking mechanism more complicated of existing drill chuck.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of rational in infrastructure, easy for operation, can prevent the shock-resistant lock spanner drill chuck that under the duties such as impact shock, drill bit gets loose.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of shock-resistant lock spanner drill chuck, comprise drill body, jaw, overcoat, gear ring, spanner, and described drill body has three oblique pilot holes that are uniformly distributed circumferentially; Described three jaws are mounted slidably correspondingly in oblique pilot hole, and jaw has external thread section; Described overcoat is set on drill body rotationally; The internal thread of described gear ring matches with jaw external thread section, and overcoat is fixedly connected with gear ring; Described drill body is provided with the first thrust surface and the second thrust surface, and drill body side is provided with driving hole; Driving hole location on described spanner and drill body coordinates, the tooth engagement on tooth and gear ring on spanner, and rotating spanner drives gear ring to rotate thereupon; It is characterized in that: between the first thrust surface on described drill body and gear ring, be also provided with retaining mechanism, described retaining mechanism comprises steel pad and steel ball, described steel pad is between first thrust surface and gear ring of drill body; Described gear ring is circumferentially provided with several and has the chute of lead angle on the end face of steel pad, and described steel ball is between steel pad and gear ring, and steel ball correspondence is placed in chute, can in chute, move.
Further, described steel pad is plane with the one side that drill body the first thrust surface contacts, and steel pad is radially evenly provided with several shallow grooves on a circumference of gear ring, and described steel ball can along the circumferential direction move in shallow grooves and between shallow grooves.
Further, the chute with lead angle on described gear ring end face arranges from shallow to deep clockwise, and steel ball is arranged in chute movingly, and when in the time that becoming flexible appears in clamp position, steel ball is moved to shallow slot direction by deep trouth in chute, realizes locking.
Between drill body of the present invention and gear ring, by locking mechanism is set, in the time that jaw is positioned at clip position and has loosening sign, this locking mechanism can compress jaw, to prevent that jaw from getting loose, increases the firm degree of clamping of jaw.Can make electric drill in impact process, prevent that drill bit from getting loose, can not become flexible thereby pin drill bit.Against existing technologies, the present invention is rational in infrastructure, easy for operation, in the time of impact shock, can prevent that drill bit is loosening.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is described further.
Fig. 1 is that the present invention forms structural representation.
Fig. 2 is the structural representation of drill body in the present invention.
Fig. 3 is the structural representation of jaw in the present invention.
Fig. 4 is the structural representation of gear ring in the present invention.
Fig. 5 is the structural representation of steel pad in the present invention.
Fig. 6 is the schematic diagram of the groove of steel pad in the present invention.
Label in figure is: 1. drill body, 2. overcoat, 3. gear ring, 4. jaw, 5. spanner, 6. steel ball, 7. steel pad.11. first thrust surfaces, 12. second thrust surfaces, 13. driving holes, 31. chutes, 32. shallow slots, 33. deep trouths, 41. external thread sections, 71. shallow grooves.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of shock-resistant lock spanner drill chuck, comprises drill body 1, jaw 4, overcoat 2, gear ring 3, spanner 5 etc.Wherein in drill body 1, be provided with three oblique pilot holes that are uniformly distributed circumferentially, tiltedly the front end of pilot hole is open, and drill body 1 is provided with the first thrust surface 11 and the second thrust surface 12, and is provided with driving hole 13.Described overcoat 2 is set on drill body 1 rotationally.Driving hole 13 location on described spanner 5 and drill body 1 coordinate, the tooth engagement on the tooth on spanner 5 and gear ring 3, and rotating spanner 5 drives gear ring 3 to rotate thereupon; Gear ring drives jaw to move up and down along the oblique pilot hole of drill body, reaches the object that clamps and unclamp.Described gear ring 3 is set in outside three jaws 4, and its internal thread is meshed with external thread section 41, can drive jaw 4 to stretch out or the oblique pilot hole of retracting.Overcoat 2 is fixedly connected with gear ring 3.
Described three jaws 4 and three oblique pilot holes arrange correspondingly, and can slide along the incline direction of oblique pilot hole.Each jaw 4 all has external thread section 41, as shown in Figure 3.Jaw 4 has the clip position of the front end that stretches out oblique pilot hole, and the released position of the oblique pilot hole of retracting.When in clip position, the leading section of three jaws 4 is mutually close, with clamping device.When in released position, the leading section of three jaws 4 mutually away from, to instrument is unloaded.
Between the first thrust surface 11 on drill body of the present invention and gear ring 3, be also provided with retaining mechanism, described retaining mechanism comprises steel pad 7 and steel ball 6, and described steel pad 7 is between first thrust surface and gear ring of drill body; Described gear ring 3 is circumferentially provided with several chutes 31 with lead angle on the end face of steel pad 7, as shown in Figure 4.Described four steel balls 6 are between steel pad 7 and gear ring 3, and each steel ball 6 correspondence is placed in a chute 31, can in chute 31, move.
Chute 31 with lead angle on described gear ring 3 end faces arranges from shallow to deep clockwise, and chute 31 one end are shallow slot 32, and the other end is deep trouth 33.Steel ball 7 is arranged in chute 31 movingly, and when in the time that clamp position also occurs becoming flexible, steel ball 6 is moved to shallow slot 32 directions by deep trouth 33 in chute 31, utilize chute lead angle, push gear ring 3, jaw 4 by steel ball 6, prevent that jaw 4 from getting loose, realize locking.
As shown in Figure 5 and Figure 6, steel pad 7 of the present invention is plane with the one side that drill body the first thrust surface contacts, and steel pad 7 is set on drill body 1, contacts with drill body 1 first stop surface sliding friction, can rotate relative to drill body 1.Steel pad 7 is radially evenly provided with several shallow grooves 71 on a circumference of gear ring, and described steel ball 6 can be in shallow grooves 71 on circumference and movement between shallow grooves 71.Steel ball 6 can be along the shallow grooves of steel pad one side circular motion like this.
When the present invention works, in the time that spanner 5 tightens, spanner 5 drives gear ring 3 to clockwise rotate, jaw 4 reaction forces reduce the gap between gear ring 3 and steel pad 7, steel ball 6 is forced to a lateral movement of the deep trouth 33 of gear ring 3, and is parked in deep trouth 33 positions, and steel ball 6 rolls in the shallow grooves 71 of steel pad 7, until jaw 4 stretches out and be positioned at clamping device position, steel ball 6 stops in shallow grooves 71 one rolling.When the trend of getting loose appears during in clamping device position in jaw 4, gear ring 3 is to rotating backward, the relative gear ring 3 of steel ball 6 is moved to the direction of shallow slot 32 by deep trouth 33 places in chute 31, and then steel pad 7 is produced to extruding force, steel ball 6 is squeezed in the shallow grooves 71 of steel pad 7 all the time, and extruding force compresses the first thrust surface of drill body 1 by an other plane transmission of steel pad 7.This extruding force is also passed to jaw 4 by gear ring 3, by oblique pilot hole, makes jaw 4 closures tighter, plays the object that prevents the instrument of getting loose, and realizes locking.
When drill chuck is in the time that spanner 5 unclamps, spanner 5 drives gear ring 3 to rotate backward, because making steel ball 6, extruding force is pressed in groove 71, this power of unclamping is greater than the frictional force between slip frictional force and gear ring 3 and jaw 4 screw threads of the first thrust surface of steel pad 7 and drill body 1, between steel pad 7 and drill body 1, produce and slide, the relative drill body 1 first thrust surface counter motion of steel pad 7, gear ring 3 and steel ball 6 and steel pad 7 together rotate backward, the screw thread of gear ring 3 drives jaw 4 to unclamp, after extruding force loses, steel ball 6 rolling friction power are less than the force of sliding friction between drill body 1 and steel pad 7, gear ring 3 drives steel ball 6 to roll, steel pad 7 is motionless, reach the object of back off tool.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect: by locking mechanism is set, in the time that jaw is positioned at clip position and has loosening sign, this locking mechanism can compress jaw, to prevent that jaw from getting loose, increases the firm degree of clamping of jaw.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a shock-resistant lock spanner drill chuck, comprises drill body, jaw, overcoat, gear ring, spanner, and described drill body has three oblique pilot holes that are uniformly distributed circumferentially; Described three jaws are mounted slidably correspondingly in oblique pilot hole, and jaw has external thread section; Described overcoat is set on drill body rotationally; The internal thread of described gear ring matches with jaw external thread section, and overcoat is fixedly connected with gear ring; Described drill body is provided with the first thrust surface and the second thrust surface, and drill body side is provided with driving hole; Driving hole location on described spanner and drill body coordinates, the tooth engagement on tooth and gear ring on spanner, and rotating spanner drives gear ring to rotate thereupon; It is characterized in that: between the first thrust surface on described drill body and gear ring, be also provided with retaining mechanism, described retaining mechanism comprises steel pad and steel ball, described steel pad is between first thrust surface and gear ring of drill body; Described gear ring is circumferentially provided with several and has the chute of lead angle on the end face of steel pad, and described steel ball is between steel pad and gear ring, and steel ball correspondence is placed in chute, can in chute, move.
2. shock-resistant lock spanner drill chuck according to claim 1, it is characterized in that: described steel pad is plane with the one side that drill body the first thrust surface contacts, steel pad is radially evenly provided with several shallow grooves on a circumference of gear ring, and described steel ball can along the circumferential direction move in shallow grooves and between shallow grooves.
3. shock-resistant lock spanner drill chuck according to claim 1, it is characterized in that: the chute with lead angle on described gear ring end face arranges from shallow to deep clockwise, steel ball is arranged in chute movingly, when in the time that becoming flexible appears in clamp position, steel ball is moved to shallow slot direction by deep trouth in chute, realizes locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410408179.4A CN104148712A (en) | 2014-08-19 | 2014-08-19 | Impact-resistant locking type spanner drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410408179.4A CN104148712A (en) | 2014-08-19 | 2014-08-19 | Impact-resistant locking type spanner drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104148712A true CN104148712A (en) | 2014-11-19 |
Family
ID=51874438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410408179.4A Pending CN104148712A (en) | 2014-08-19 | 2014-08-19 | Impact-resistant locking type spanner drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104148712A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526503A (en) * | 2018-05-23 | 2018-09-14 | 山东威达机械股份有限公司 | A kind of clip claw assembly and drill chuck |
| CN114603592A (en) * | 2022-03-25 | 2022-06-10 | 深圳市大族机器人有限公司 | Manipulator joint assembly and installation wrench thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0302992A1 (en) * | 1987-08-14 | 1989-02-15 | Günter Horst Röhm | Post-clamping chuck |
| CN2709062Y (en) * | 2004-06-11 | 2005-07-13 | 山东威达机械股份有限公司 | Spanner self-locking drill chuck |
| WO2007038906A1 (en) * | 2005-10-06 | 2007-04-12 | Röhm Gmbh | Drill chuck |
| CN202779945U (en) * | 2012-08-01 | 2013-03-13 | 山东威达机械股份有限公司 | Drill chuck |
| CN103143755A (en) * | 2013-03-18 | 2013-06-12 | 山西惠丰机械工业有限公司 | Sliding friction self-locking drill chuck |
| CN103252522A (en) * | 2012-07-24 | 2013-08-21 | 金雪梅 | Drill chuck capable of preventing disengagement of wrench |
| CN203992535U (en) * | 2014-08-19 | 2014-12-10 | 山东威达机械股份有限公司 | Shock-resistant lock spanner drill chuck |
-
2014
- 2014-08-19 CN CN201410408179.4A patent/CN104148712A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0302992A1 (en) * | 1987-08-14 | 1989-02-15 | Günter Horst Röhm | Post-clamping chuck |
| CN2709062Y (en) * | 2004-06-11 | 2005-07-13 | 山东威达机械股份有限公司 | Spanner self-locking drill chuck |
| WO2007038906A1 (en) * | 2005-10-06 | 2007-04-12 | Röhm Gmbh | Drill chuck |
| CN103252522A (en) * | 2012-07-24 | 2013-08-21 | 金雪梅 | Drill chuck capable of preventing disengagement of wrench |
| CN202779945U (en) * | 2012-08-01 | 2013-03-13 | 山东威达机械股份有限公司 | Drill chuck |
| CN103143755A (en) * | 2013-03-18 | 2013-06-12 | 山西惠丰机械工业有限公司 | Sliding friction self-locking drill chuck |
| CN203992535U (en) * | 2014-08-19 | 2014-12-10 | 山东威达机械股份有限公司 | Shock-resistant lock spanner drill chuck |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526503A (en) * | 2018-05-23 | 2018-09-14 | 山东威达机械股份有限公司 | A kind of clip claw assembly and drill chuck |
| CN108526503B (en) * | 2018-05-23 | 2024-02-23 | 山东威达机械股份有限公司 | Clamping jaw assembly and drill chuck |
| CN114603592A (en) * | 2022-03-25 | 2022-06-10 | 深圳市大族机器人有限公司 | Manipulator joint assembly and installation wrench thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141119 |
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| WD01 | Invention patent application deemed withdrawn after publication |