CN103394734A - Self-fastening self-locking drill chuck - Google Patents
Self-fastening self-locking drill chuck Download PDFInfo
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- CN103394734A CN103394734A CN201310307283XA CN201310307283A CN103394734A CN 103394734 A CN103394734 A CN 103394734A CN 201310307283X A CN201310307283X A CN 201310307283XA CN 201310307283 A CN201310307283 A CN 201310307283A CN 103394734 A CN103394734 A CN 103394734A
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Abstract
The invention provides a self-fastening self-locking drill chunk and solves the technical problem that an existing self-fastening drill chunk can be utilized along only one direction and is complex in structure and high in cost. After a gear ring is engaged with a front sleeve, self-fastening force generated during working can be locked automatically and supplied for reverse rotation. When a rear body rotates positively, the gear ring and teeth of the front sleeve can be engaged and can still be allowed to overrun, namely the front sleeve and a rear sleeve can rotate relatively. When the rear body rotates inversely, the engaged teeth cannot overrun, the front sleeve and the rear sleeve are locked together tightly and rotate synchronously. The self-fastening self-locking drill chunk can be applied widely to mechanical processing field.
Description
Technical field
The present invention relates to a kind of machining fixture with cutter, especially relate to a kind of simple to operate, cost is lower, both forward and reverse directions all can be worked self-tightening self-locking clamping chuck of drill bit.
Background technology
Often use the operations such as the instruments such as lathe and electric drill are holed, milling in the production and processing activity, experience long-term application and improvement although be installed in the drill chuck that is used for the cutters such as clamping drilling bit, milling cutter on these device Host working shafts, still had many deficiencies.
International application no is to disclose a kind of New type bit holder in the patent application of PCT/CN2012/079824, it is provided with suitable lead angle, can open easily and clamp, but this drill chuck can only use along a direction, in case during the drill chuck reverse rotation, jaw will loosening cutter, and drill chuck quits work immediately.And the drill chuck of existing locking device, its locking device is manual locking, complicated operation, and cost is higher.
Summary of the invention
The present invention be directed to above-mentioned drill chuck can only be along the technical problem of a direction job, provide a kind of simple in structure, cost is lower, the equal workable self-tightening self-locking clamping chuck of drill bit of both forward and reverse directions.
For this reason, the present invention is provided with precursor, rear body, jaw, screw, protheca and rear cover, and jaw is provided with jaw external thread, and screw is provided with the screw internal thread, and jaw external thread and screw internal thread cooperatively interact, rear cover and screw interference fit; The present invention also is provided with gear ring, and gear ring is provided with the outer helical teeth of gear ring, the front interior helical teeth of protheca that is arranged with, and in the outer helical teeth of gear ring and protheca, helical teeth forms a fixed connection in the reverse directions along drill chuck; Gear ring with after be enclosed within along forming a fixed connection on their circumferencial direction.
The preferred technical scheme of the present invention is arranged with key after being, gear ring is provided with keyway, and key and keyway cooperatively interact.
The further preferred technical scheme of the present invention is to be provided with at least two gear ring baffle plates, and keyway is between the gear ring baffle plate.
The further preferred technical scheme of the present invention is also to be provided with spring, puts after spring housing is located at.
The further preferred technical scheme of the present invention is to be provided with bearing between screw and precursor.
The further preferred technical scheme of the present invention is to be provided with jump ring between precursor and described rear body.
The further preferred technical scheme of the present invention is that precursor is provided with annular oil sump, is provided with lubricating grease in annular oil sump, and lubricating grease contacts with jaw.
After the present invention, cover is fixedly connected with by interference fit or alternate manner with screw, gear ring with after be enclosed within along forming a fixed connection on their circumferencial direction, gear ring is provided with the outer helical teeth of gear ring, is provided with the interior helical teeth of protheca in protheca.Gear ring is slided to the right the outer helical teeth of gear ring is meshed with helical teeth in protheca, like this after motor reversal, in the outer helical teeth of gear ring and protheca, helical teeth forms a fixed connection on the circumferencial direction along gear ring, rear body drives rear cover, gear ring and screw backward rotation together, and then drive protheca and precursor and follow them and rotate together, jaw just can not clamp thereby continue maintenance the state that the toolsmith does along with rotation upwards walking along the jaw hole of screw, namely can work in the other direction yet; The present invention need not any operation in the process that work is used just can make the drill chuck auto lock, thereby can reverse operation, compared with present simple to operate with the drill chuck of locking device, cost is lower.
Description of drawings
Fig. 1 is overall installation diagram of the present invention;
Fig. 2 is the cutaway view of precursor of the present invention;
Fig. 3 is the half sectional view of body after the present invention;
Fig. 4 is the stereogram of jaw of the present invention;
Fig. 5 is the stereogram of screw of the present invention;
Fig. 6 is the half sectional view that overlaps after the present invention;
Fig. 7 is the stereogram that overlaps after the present invention;
Fig. 8 is the stereogram of gear ring of the present invention;
Fig. 9 is the stereogram of protheca of the present invention;
Figure 10 is the half sectional view of protheca of the present invention.
Symbol description in figure:
1. precursor; 2. rear body; 3. jaw; 4. jaw hole; 5. screw; 6. gear ring; 7. bearing; 8. bearing gasket; 9. protheca; 10. overlap afterwards; 11. groove; 12. precursor hemisphere groove; 13. rear body hemisphere groove; 14. steel ball; 15. precursor jump-ring slot; 16. rear body jump-ring slot; 17. jump ring; 18. jaw external thread; 19. screw internal thread; 20. bearing ball; 21. main frame connecting hole; 22. cutter holes; 23. cylinder ring; 24. spring; 25. key; 26. the outer helical teeth of gear ring; 27. gear ring baffle plate; 28. keyway; 29. helical teeth in protheca.
The specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention mainly comprises precursor 1, rear body 2, jaw 3, jaw hole 4, screw 5, gear ring 6, protheca 9 and rear cover 10.Rear body 2 parts are built in precursor 1, jaw 3 is positioned at the jaw hole 4 of precursor 1, jaw 3 cooperatively interacts by screw thread with screw 5, and screw 5 is fixedly connected with by interference fit or alternate manner with rear cover 10 again, and rear cover 10 is fixedly connected with by interference fit or alternate manner with rear body 2.The rear cover 10 that rotarily drives of rear body 2 rotates, and drives subsequently screw 5 and rotates, and the rotation of screw 5 makes and its jaw 3 interior downward motion in jaw hole 4 that cooperatively interacts by screw thread, thereby clamp-on tool is completed forward processing operation process.
Inner middle position, the rear end of precursor 1 is provided with groove 11, and in the time of in rear body 2 is inserted into precursor 1, rear body 2 just in time cooperatively interacts with groove 11.Be provided with precursor hemisphere groove 12 in precursor 1 rear end along central axis, it is mutually corresponding with the rear body hemisphere groove 13 on rear body 2, just in time forms a ball groove of completing.Be provided with steel ball 14 in the ball groove, when rear body 2 rotated with respect to precursor 1, steel ball 14 just can roll in original place, and the friction between rear body 2 and precursor 1 will become rolling friction by original sliding friction, reduced greatly the frictional force between precursor 1 and rear body 2, made whole drill chuck running more flexible.
Be provided with precursor jump-ring slot 15 on precursor 1, on rear body 2, the position corresponding with precursor jump-ring slot 15 is provided with rear body jump-ring slot 16, and both complement each other to form a complete jump-ring slot, are provided with jump ring 17 in jump-ring slot.Jump ring 17 is clutched and put into rear body jump-ring slot 16, be that precursor jump-ring slot 15 is with the complete jump-ring slot of the corresponding formation of rear body jump-ring slot 16 time when precursor 1 and rear body 2 cooperatively interact, jump ring 17 is upheld, its part enters in precursor jump-ring slot 15, so just played spacing effect, make rear body 2 to do lateral rotation with respect to precursor 1, and can not do radial motion with respect to precursor 1, guaranteed the stability of structure.
On precursor 1 oblique be processed with symmetrically three run through the up and down jaw holes 4, jaw 3 is positioned at jaw hole 4.As shown in Figure 4, jaw 3 is provided with jaw external thread 18.Whole drill chuck also is provided with screw 5, and screw 5 is enclosed within on precursor 1 tightly.As shown in Figure 5, screw 5 is provided with screw internal thread 19, and the jaw external thread 18 on itself and jaw 3 cooperatively interacts, and when screw 5 rotated, jaw 3 will move up and down with it in jaw hole 4.Also be provided with bearing 7 and bearing gasket 8 between the left end of screw 5 and precursor 1, bearing 7 is provided with bearing ball 20, so when screw 5 rotation, the frictional force between itself and precursor 1 just becomes rolling friction, reduce resistance between the two, increased the flexibility of whole drill chuck.
As shown in Figure 6 and Figure 7, the right end portion of rear cover 10 is provided with cylinder ring 23, is arranged with spring 24 on cylinder ring 23, and the right-hand member of spring 24 is along four keys 25 that are provided with of the even circumferential of cylinder ring 23, key 25 blocks spring 24 on cylinder ring, make the extension to the right that it can not be random.Curve inwardly along axis and form a cylinder ring at the left end of rear cover 10, it is set on rear body 2, with rear body 2, by interference fit or other modes, is fixedly connected with.
The present invention also is provided with gear ring 6, and as shown in Figure 8, gear ring 6 is circular ring, and the one end is provided with the outer helical teeth 26 of gear ring; An end of helical teeth 26 also is provided with four gear ring baffle plates 27 outside the inside of gear ring 6, close gear ring, and they are uniformly distributed along the internal circumference of gear ring 6, are equipped with keyway 28 between two adjacent gear ring baffle plates 27.Gear ring baffle plate 27 is provided with at least two.
When gear ring 6 coordinates with rear cover 10, gear ring 6 is enclosed within on rear cover 10, make gear ring baffle plate 27 that spring 24 is compressed, then rotate gear ring 6, make key 25 on rear cover 10 enter into keyway 28 on gear ring 6, like this, gear ring 6 has just formed and has been fixedly connected with on the circumferencial direction along them with rear cover 10, when rear cover 10 was rotated in the forward, gear ring 6 also can be followed and be rotated in the forward together.
As shown in Figure 9 and Figure 10, protheca 9 is provided with helical teeth 29 in protheca.Protheca 9 is set on precursor 1, and with its formation interference fit, the outer helical teeth 26 of gear ring is relative with the interior helical teeth 29 of protheca.Rotate gear ring 6, it moves right under the effect of spring 24, and the outer helical teeth 26 of gear ring is intermeshing with the interior helical teeth 29 of protheca.Because the outer helical teeth 26 of gear ring is helical teeth with the interior helical teeth 29 of protheca, they 6 circumferencial direction along gear ring clockwise or counterclockwise form a fixed connection, namely can only form a fixed connection on the reverse directions of drill chuck, and be in relative rotation on the direction of drill chuck forward.At this moment, key 25 also can some be stuck in keyway 28, thus gear ring 6 and rear cover 10 on the circumferencial direction along them still for being fixedly connected with; Like this, even motor is when counter-rotating, the outer helical teeth 26 of gear ring forms a fixed connection on the circumferencial direction along gear ring 6 with the interior helical teeth 29 of protheca, after rear body 2 drives, cover 10 and gear ring 6 rotate, further drive protheca 9 and precursor 1 rotation, whole drill chuck forms a whole backward rotation, and jaw 3 can not unclamp, from continuing to keep clamping the state that the toolsmith does.
The outer helical teeth 26 of gear ring can be any unequal-sided geometry with the interior helical teeth 29 of protheca, only needs to guarantee that they can only form a fixed connection and get final product along a direction on the circumferencial direction along gear ring 6.
Rear cover 10 of the present invention, gear ring 6 and 9 pairs of drill chucks of protheca can reverse and play very important effect, they just are equivalent to a clutch, namely promote gear ring 6 to the right and make outside gear ring in helical teeth 26 and protheca after helical teeth 29 engagements clutch is opened, the drill chuck both forward and reverse directions all can be worked; Clutch cuts out and namely promotes gear ring 6 left and make in the outer helical teeth 26 of gear ring and protheca after helical teeth 29 separates, when drill chuck carries out work again, can only be along a direction rotation, in case motor reversal, jaw will unclamp, drill chuck can not work on.
Below the course of work of the present invention is illustrated:
Clutch is opened, namely promoted gear ring 6 to the right and make the outer helical teeth 26 of gear ring be meshed with helical teeth 29 in protheca.
cutter is inserted in the cutter holes 22 of precursor 1, one holds protheca 9 or precursor 1, another holds and rotates rear cover 10, because protheca 9 with respect to precursor 1 for being fixedly connected with, rear cover 10 with respect to screw 5 for being fixedly connected with, the screw internal thread 19 of screw 5 cooperatively interacts with the jaw external thread 18 of jaw 3, and after this moment, cover 10 grasps and does not rotate, so the rotation of precursor 1 or protheca 9 forces three jaws 3 in precursor 1 to move downward along jaw hole 4, space between three jaw 3 lower ends also dwindles thereupon, until clamp the cutter of putting into cutter holes 22, complete the hand-operated clamping process.
Should note this moment, although the outer helical teeth 26 of gear ring and interior helical teeth 29 engagements of protheca, when but after rotating, cover 10 and then drive gear ring 6 rotate, protheca 9 and precursor 1 can not followed them yet and be rotated together, because the outer helical teeth 26 of gear ring is helical teeth with the interior helical teeth 29 of protheca, they can only form a fixed connection in one direction, and are in relative rotation in the opposite direction between the two.
the main frame connecting hole 21 of rear body 2 is connected with the working shaft of main frame, this moment the starting device motor, rear body 2 forward High Rotation Speed under the drive of host work axle, due to rear cover 10, the effect of the static inertia between screw 5 and jaw 3, the starting stage of at rear body 2, rotating has stronger impulsive force to force screw 5 and jaw 3 to follow rotation therewith, this impulsive force further makes three jaw 3 clamp-on tools, reaction force between cutter and workpiece afterwards, also forcing jaw 3, do and relatively rotate between screw 5 and rear cover 10, this has increased the chucking power of 3 pairs of cutters of three jaws equally, thereby completed self-holding function, make whole drill chuck have very high precision and stability, rotation along with motor, three 3 clamp-on tools rotate together gradually, thereby carry out machining.
When the equipment motor counter-rotated, rear body 2 was followed rotation therewith, and because rear cover 10 is fixedly connected with by interference fit or alternate manner with rear body 2, the later cover 10 of institute can be followed rear body 2 and be rotated together; Not only because rear cover 10 and screw 5 by interference fit or alternate manner be fixedly connected with, rear cover 10 but also with gear ring 6, by key 25, form a fixed connection on the circumferencial direction along them, institute is later overlaps that 10 rotation can drive screw 5 and gear ring 6 is rotated; If gear ring 6 does not cooperatively interact with protheca 9, protheca 9 and precursor 1 will keep motionless, and the rotation of screw 5 will make with screw 5 and move upward along the jaw hole by the jaw 3 that screw thread matches, thereby causes loosening cutter, and drill chuck is no longer worked; But after gear ring 6 is rotated, it moves right under the effect of spring 24, gear ring 6 is intermeshing by tooth with protheca 9, and form a fixed connection after motor reversal, the rotation of gear ring 6 will drive protheca 9 and precursor 1 rotates together, jaw 3 moves upward along jaw hole 4 with regard to not following the rotation of screw 5, thereby can continue to keep clamp-on tool to carry out the state of work.
After motor quits work, need first clutch to be opened and namely promote backward after gear ring 6 makes the outer helical teeth 26 of gear ring and helical teeth 29 in protheca separates, grasp again protheca 9 or precursor 1, rightabout according to the direction of cover 10 after the time rotation with the hand-operated clamping drill chuck rotates rear cover 10, thereby drill chuck is opened.
In the present invention, precursor 1 and rear body 2 are undertaken spacing by jump ring, and it can have the various deformation mode.For example, the jump-ring slot that forms that precursor 1 is matched with rear body 2 changes cylinder pin hole into, is provided with straight pin in cylinder pin hole, can play spacing effect equally, and straight pin also can be arranged to other shapes arbitrarily certainly, only needs to play spacing effect and gets final product.Again for example, jump-ring slot or cylinder pin hole can be omitted, the steel ball that directly will originally in forebody-afterbody lateral contact position, arrange moves to the position that it radially connects, so namely played spacing effect, guaranteed that also friction between the two is rolling friction, the flexibility that has kept the drill chuck running, and the rolling bearing between forebody-afterbody can arrange a plurality of.Mode spacing between the forebody-afterbody that all those of ordinary skill can be expected all belongs to protection scope of the present invention.
Power of the present invention is to pass to rear cover 10 by rear body 2, then by rear cover 10, by screw 5, passes to jaw 3, drives that jaw 3 moves up and down in jaw hole 4, and it also can adopt various deformation.No matter adopt which type of transfer mode, after only needing to guarantee, the rotation of cover 10 finally can make jaw 3 move up and down and get final product in jaw hole 4.
The present invention can be provided with at the front end of precursor 1 annular oil sump, and it can be for continuous, also can with three corresponding settings of jaw 3, and show as discontinuous state.Envelope has lubricating grease in annular oil sump, make jaw 3 can switch to wherein lubricating grease in the process that moves up and down, thereby the frictional force between jaw 3 and precursor 1 is reduced greatly, extended the time of jaw 3 flexibilities, and then extended the service life of drill chuck.Outside and the protheca 9 of annular oil sump closely cooperate, and lubricating grease can be to exosmosis.
In order to make jaw 3 location more accurate, also can between jaw 3 and precursor 1 or other parts, the jaw positioner be set, be used for making jaw 3 to be merely able to move up and down along jaw hole 4, and can lateral rotation.In addition, the present invention's steel ball 14 used all adopts wear-resisting rigidity material with bearing ball 20, also can adopt other material that can play same function to replace.
Because drill chuck of the present invention is mainly rear cover 10, gear ring 6 and protheca 9 to the structure that it can reverse operation contributes, so, drive the working method of jaw 3 by external screw thread except the present invention, for the drill chuck such as gear or other type of drive, primary structure that can reverse operation of the present invention is applicable too.
Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, all belong to protection scope of the present invention.
Claims (7)
1. self-tightening self-locking clamping chuck of drill bit, it is provided with precursor, rear body, jaw, screw, protheca and rear cover, described jaw is provided with jaw external thread, described screw is provided with the screw internal thread, described jaw external thread and described screw internal thread cooperatively interact, described rear cover and described screw interference fit, it is characterized in that also being provided with gear ring, described gear ring is provided with the outer helical teeth of gear ring, be arranged with helical teeth in protheca before described, in the outer helical teeth of described gear ring and described protheca helical teeth the circumferencial direction along described gear ring clockwise or counter clockwise direction form a fixed connection; Described gear ring and described after be enclosed within along forming a fixed connection on their circumferencial direction.
2. self-tightening self-locking clamping chuck of drill bit according to claim 1, is characterized in that after described being arranged with key, and described gear ring is provided with keyway, and described key and described keyway cooperatively interact.
3. self-tightening self-locking clamping chuck of drill bit according to claim 2, is characterized in that described gear ring is provided with at least two gear ring baffle plates, and described keyway is between described gear ring baffle plate.
4. self-tightening self-locking clamping chuck of drill bit according to claim 3, is characterized in that described self-tightening self-locking clamping chuck of drill bit also is provided with spring, and described spring housing is located at after described and puts.
5. self-tightening self-locking clamping chuck of drill bit according to claim 4, is characterized in that being provided with bearing between described screw and described precursor.
6. self-tightening self-locking clamping chuck of drill bit according to claim 5, is characterized in that being provided with jump ring between described precursor and described rear body.
7. self-tightening self-locking clamping chuck of drill bit according to claim 6, is characterized in that described precursor is provided with annular oil sump, is provided with lubricating grease in described annular oil sump, and described lubricating grease contacts with described jaw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310307283.XA CN103394734B (en) | 2013-07-19 | 2013-07-19 | Self-tightening self-locking clamping chuck of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310307283.XA CN103394734B (en) | 2013-07-19 | 2013-07-19 | Self-tightening self-locking clamping chuck of drill bit |
Publications (2)
| Publication Number | Publication Date |
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| CN103394734A true CN103394734A (en) | 2013-11-20 |
| CN103394734B CN103394734B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310307283.XA Active CN103394734B (en) | 2013-07-19 | 2013-07-19 | Self-tightening self-locking clamping chuck of drill bit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180777A (en) * | 2016-08-31 | 2016-12-07 | 柳尧亭 | Stopping device and there is the keyless drill chuck of stopping device |
| CN106424861A (en) * | 2016-12-08 | 2017-02-22 | 柳尧亭 | Gear self-tightening drill chuck and flat claw self-tightening drill chuck |
| CN107322057A (en) * | 2017-07-24 | 2017-11-07 | 浙江三鸥机械股份有限公司 | A kind of hand fastening drill clutch |
| CN115740581B (en) * | 2022-11-17 | 2023-12-26 | 江苏飞达钻头股份有限公司 | Drill chuck suitable for straight shank drill bit and use method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4023304C1 (en) * | 1990-07-21 | 1991-09-12 | Guenter Horst 7927 Sontheim De Roehm | |
| DE59606508D1 (en) * | 1996-01-17 | 2001-04-05 | Roehm Gmbh | Drill chuck |
| CN2715890Y (en) * | 2004-08-03 | 2005-08-10 | 山东威达机械股份有限公司 | Self-locking drill chuck with noise |
| CN201033371Y (en) * | 2007-06-01 | 2008-03-12 | 浙江三鸥机械股份有限公司 | Novel clamping head of closefisted drill and novel clamping head of wrench drill |
| CN201091926Y (en) * | 2007-08-27 | 2008-07-30 | 李香玉 | Clamping device |
| CN102001006B (en) * | 2009-09-01 | 2015-06-10 | 山东威达机械股份有限公司 | Reinforcing self-locking drill chuck and self-locking mechanism thereof |
| CN202921987U (en) * | 2011-11-22 | 2013-05-08 | 浙江三鸥机械股份有限公司 | Self-locking inner taper 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 |
-
2013
- 2013-07-19 CN CN201310307283.XA patent/CN103394734B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180777A (en) * | 2016-08-31 | 2016-12-07 | 柳尧亭 | Stopping device and there is the keyless drill chuck of stopping device |
| CN106180777B (en) * | 2016-08-31 | 2018-04-27 | 柳尧亭 | Stopping device and the keyless drill chuck with stopping device |
| CN106424861A (en) * | 2016-12-08 | 2017-02-22 | 柳尧亭 | Gear self-tightening drill chuck and flat claw self-tightening drill chuck |
| CN107322057A (en) * | 2017-07-24 | 2017-11-07 | 浙江三鸥机械股份有限公司 | A kind of hand fastening drill clutch |
| CN107322057B (en) * | 2017-07-24 | 2023-09-15 | 浙江三鸥机械股份有限公司 | Hand-tightening drill chuck |
| CN115740581B (en) * | 2022-11-17 | 2023-12-26 | 江苏飞达钻头股份有限公司 | Drill chuck suitable for straight shank drill bit and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103394734B (en) | 2016-02-17 |
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