CN102001006B - Reinforcing self-locking drill chuck and self-locking mechanism thereof - Google Patents
Reinforcing self-locking drill chuck and self-locking mechanism thereof Download PDFInfo
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- CN102001006B CN102001006B CN200910172068.7A CN200910172068A CN102001006B CN 102001006 B CN102001006 B CN 102001006B CN 200910172068 A CN200910172068 A CN 200910172068A CN 102001006 B CN102001006 B CN 102001006B
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Abstract
The invention discloses a self-locking mechanism which is used for a drill chuck. The self-locking mechanism comprises a clutch gear sleeve, an elliptical deforming ring and a control sleeve, wherein the clutch gear sleeve is fixedly connected with a chuck body of the drill chuck and forms teeth; the elliptical deforming ring comprises a basically circular first shape and a basically elliptical second shape, and the side wall of the elliptical deforming ring is provided with teeth which are meshed with the teeth of the clutch gear sleeve when the elliptical deforming ring is in the second shape; and the control sleeve is used for controlling the elliptical deforming ring to convert between the first shape and the second shape. The invention also discloses a reinforcing self-locking drill chuck with the self-locking mechanism. Because the self-locking mechanism can be used for drill chucks with various structures, the invention provides a novel idea for designing the self-locking mechanism of the drill chuck.
Description
Technical field
The present invention relates to a kind of drill chuck, the invention still further relates to a kind of self-locking mechanism for drill chuck.
Background technology
Existing drill chuck, usually be made up of drill body, jaw, nut, bearing and overcoat, the propeller shaft couplings of drill body and power source, three jaws to be arranged on drill body in three uniform inclined holes respectively, jaw there is screw thread and forms screw-driven with nut, when rotating the overcoat connected with nut, jaw can be made to move along inclined hole relative to drill body, thus clamping or back off tool handle.
In the drill chuck of above structure, because the screw thread between jaw and nut produces very large contact stress under live load, make the frictional force of its relative sliding very large, thus not easily enough large by the blessing power of the clamping tool handle of the screw-driven generation between nut and jaw, under this just makes operating mode that is large at load and that have vibrations, jaw presss from both sides loosely pad, there is the hidden danger loosened.
In order to improve the clamping performance of drill chuck, preventing jaw in the course of the work from getting loose, there will be a known multiple click self-locking mechanism, getting loose to prevent jaw.
US Patent No. 5,829,761 disclose a kind of drill chuck, it has self-locking mechanism (locking system), and the basic building block of this self-locking mechanism is spring steel members (aspring-steel entrainment element), the ratchet that this spring steel members end is formed, it can with the ratchet engagement arranged along drill body excircle, so, spring steel members can only rotate relative to drill body individual event, thus forms self-locking.
US Patent No. 6,390,481 disclose a kind of drill chuck, comprise: collet body, multiple jaw, the cover driving multiple jaw and bearing (bearing element), wherein first raceway (frist face) of this bearing defines a ratchet (ratchet), the second raceway (second face) defines the mutually engageable ratchet (pawl) with ratchet.Pawl-and-gearing engages each other and can form self-locking.
But, the present inventor finds, in above-mentioned drill chuck, adopt known click self-locking mechanism can make troubles to the global design of drill chuck, these troubles include but not limited to: apply known click self-locking mechanism and the structural design of drill chuck can be made unreasonable or can not be applied in the design of drill chuck.
Summary of the invention
The object of the invention is to provide a kind of new self-locking mechanism being applied to drill chuck, the present invention also aims to provide a kind of drill chuck with this self-locking mechanism.
For this reason, on the one hand, the invention provides a kind of self-locking mechanism, in drill chuck, it comprises: clutch tooth cover, is fixedly connected with the collet body of drill chuck, and it forms tooth; Ovalizing deflection ring, have almost circular first form and basic the second oval form, wherein, wherein, the sidewall of ovalizing deflection ring has tooth, the tooth that this tooth overlaps with clutch tooth when ovalizing deflection ring is in the second form is meshed; And control cover, change between the first form and the second form for controlling ovalizing deflection ring.
In the present invention, the tooth on ovalizing deflection ring both can be formed at lateral wall to form external tooth, also can be formed at madial wall and form internal tooth.
Preferably, above-mentioned ovalizing deflection ring has the control part for extruding ovalizing deflection ring-side wall, the sidewall of ovalizing deflection ring has the reseting groove of the control part of call access control cover.
Preferably, above-mentioned self-locking mechanism also comprises position limiting structure, for the relative rotation limiting ovalizing deflection ring and control between cover.
Preferably, above-mentioned position limiting structure is be arranged at the location division on ovalizing deflection ring.
Preferably, above-mentioned position limiting structure is the groove sidewall that the inwall of the overcoat of drill chuck is arranged, and wherein, the key of ovalizing deflection ring is limited among groove sidewall.
Preferably, above-mentioned control puts the projection being provided with and making ovalizing deflection environmental protection be held in the first form.
On the other hand, the invention provides a kind of drill chuck, it comprises: collet body, wherein has the inclined hole of multiple circumferentially decile; Multiple jaw, be slidably disposed in the inclined hole of collet body, its rear end has screw thread; Divide body nut, can be rotatably set in the outside of collet body, and be threadedly engaged with jaw; Nut sleeve, is tightly placed in the outside of point body nut; Overcoat, is rotatably set in the outside of collet body, and its outer surface forms grip part, provides rotary driving force to nut sleeve; And above-mentioned self-locking mechanism, wherein, the force-increasing mechanism synchronous axial system of the ovalizing deflection ring of self-locking mechanism and nut sleeve or nut sleeve.
Preferably, above-mentioned ovalizing deflection ring is fixedly attached to the nut sleeve of drill chuck.Or the nut sleeve of above-mentioned ovalizing deflection ring and drill chuck is integrally formed.
Preferably, above-mentioned force-increasing mechanism is lever boosting mechanism.
Preferably, above-mentioned lever boosting mechanism comprises: actuator, is arranged on the upper end of nut sleeve, and it has at least one teeth groove; Bearing member, is arranged on the lower end of nut sleeve, its clutch for clutch control portion having at least one teeth groove and engage with the locating slot in nut sleeve; And lever, the force side of its upper end is engaged with the teeth groove of actuator, the support end of its lower end engages with the teeth groove of bearing member, forced section in the middle part of it is assemblied in the drive division of nut sleeve rotationally, wherein, the clutch for clutch control portion of bearing member is meshed with the internal tooth that clutch tooth overlaps when throwing off locating slot, the key of actuator together with the keyed engagement of ovalizing deflection ring and overcoat groove sidewall, between.
Preferably, above-mentioned ovalizing deflection ring comprises the upper ring section and lower ring portion that are linked together by some attachment, wherein, upper ring section forms key, the excircle of lower ring portion has: reseting groove, the external tooth be meshed with shifter collar and for carrying out spacing location division to the control part controlling to overlap.
In addition, present invention also offers a kind of drill chuck, it comprises: collet body, wherein has the inclined hole of multiple circumferentially decile; Multiple jaw, be slidably disposed in the inclined hole of collet body, its rear end has screw thread; Divide body nut, can be rotatably set in the outside of collet body, and be threadedly engaged with jaw; Nut sleeve, is tightly placed in the outside of point body nut; Coupling sleeve, is rotatably installed in the connection holes of collet body, connects with the driving shaft of power equipment; Above-mentioned self-locking mechanism, wherein, the outer surface of the clutch tooth cover of self-locking mechanism forms grip part, controls to overlap the grip part had between clutch tooth cover with coupling sleeve; And intermediate sleeve, itself and coupling sleeve synchronous axial system, and be fixedly connected with the rear portion of ovalizing deflection ring.
Preferably, above-mentioned self-locking clamping chuck of drill bit also comprises: drag ring, between the bearing being installed in rotation on point body nut and the force-bearing table of collet body.
Preferably, above-mentioned ovalizing deflection ring is provided with the driving claw be meshed with the teeth groove of drag ring, drag ring have driving key for limiting ovalizing deflection ring, the key sidewall of rotational angle.
Self-locking mechanism according to the present invention may be used in the drill chuck of various structures, and it is that the design of the self-locking mechanism of drill chuck provides a kind of brand-new thinking.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, other object, characteristic sum effect of the present invention is described in further detail.
Accompanying drawing explanation
Forming the part of this description, showing the preferred embodiments of the present invention for understanding accompanying drawing of the present invention further, and be used for principle of the present invention is described together with description.In figure:
Fig. 1 shows the main sectional view of reinforced self-locking holder for drill according to a first embodiment of the present invention;
Fig. 2 shows reinforced self-locking holder for drill shown in Fig. 1 and is in the K-K of releasing orientation to sectional view, wherein, removed nut sleeve, lever, bearing member and overcoat;
Fig. 3 shows the F-F of the process of reinforced self-locking holder for drill shown in Fig. 1 clamping device to sectional view, wherein, removed lever;
Fig. 4 shows the K-K of reinforced self-locking holder for drill process clamped condition described in Fig. 1 to sectional view, wherein, removed nut sleeve, lever, bearing member and overcoat;
Fig. 5 shows the E-E of the process of reinforced self-locking holder for drill shown in Fig. 1 releasing orientation to sectional view;
Fig. 6 shows the E-E of the process of reinforced self-locking holder for drill shown in Fig. 1 clamped condition to sectional view;
Fig. 7 shows each partial sectional view of dextrad of reinforced self-locking holder for drill shown in Fig. 1;
Fig. 8 a shows the bearing member 3 in reinforced self-locking holder for drill shown in Fig. 1 " main sectional view and F to partial sectional view;
Fig. 8 b shows bearing member 3 shown in Fig. 8 a " top view;
Fig. 9 shows the main sectional view of self-locking clamping chuck of drill bit according to a second embodiment of the present invention;
Figure 10 shows self-locking clamping chuck of drill bit shown in Fig. 9 and is in the N-N of releasing orientation to sectional view;
Figure 11 shows the N-N of the process of self-locking clamping chuck of drill bit shown in Fig. 9 clamped condition to sectional view;
Figure 12 a shows the expanded view of the first ovalizing deflection ring of self-locking clamping chuck of drill bit shown in Fig. 9;
Figure 12 b shows the expanded view of the second ovalizing deflection ring of self-locking clamping chuck of drill bit shown in Fig. 9;
Figure 13 shows self-locking clamping chuck of drill bit shown in Fig. 9 and is in the M-M of releasing orientation to sectional view;
Figure 14 shows self-locking clamping chuck of drill bit shown in Fig. 9 and is in the M-M of clamped condition to sectional view;
Figure 15 shows the main sectional view of self-locking clamping chuck of drill bit according to a third embodiment of the present invention;
Figure 16 shows self-locking clamping chuck of drill bit shown in Figure 15 and is in the T-T of releasing orientation to sectional view;
Figure 17 shows self-locking clamping chuck of drill bit shown in Figure 15 and is in the R-R of clamped condition to sectional view;
Figure 18 shows the main sectional view of self-locking clamping chuck of drill bit according to a fourth embodiment of the present invention;
Figure 19 shows the U-U of self-locking clamping chuck of drill bit shown in Figure 18 to sectional view;
Figure 20 shows self-locking clamping chuck of drill bit shown in Figure 18 and is in the V-V of releasing orientation to sectional view;
Figure 21 shows self-locking clamping chuck of drill bit shown in Figure 18 and is in the W-W of releasing orientation to sectional view;
Figure 22 shows self-locking clamping chuck of drill bit shown in Figure 18 and is in the W-W of clamped condition to sectional view;
Figure 23 shows the main sectional view of self-locking clamping chuck of drill bit according to a fifth embodiment of the present invention;
Figure 24 self-locking clamping chuck of drill bit shown according to a sixth embodiment of the present invention is in the sectional view of releasing orientation, wherein, shows the variant embodiment of self-locking mechanism; And
Figure 25 shows the sectional view that self-locking clamping chuck of drill bit shown in Figure 24 is in clamped condition.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Self-locking mechanism according to the present invention is preferably applied in drill chuck, is now described for the drill chuck with this self-locking mechanism.
First embodiment
Fig. 1 to Fig. 8 b shows reinforced self-locking holder for drill according to a first embodiment of the present invention.The assembly relation of its each parts is described below:
As shown in Figure 1, three jaws 13 are loaded in three of collet body 11 three inclined holes had angle with standard shaft line; 2 slices points of body nuts 12 assembled on collet body 11 and with the threaded engagement of three jaws, point body nut external application nut sleeve 2 elastic conjunction is integral.
Bonnet 18 is fixedly mounted on the rear end of collet body 11, and overcoat 8 is axially positioned on collet body through jump ring 14 and packing ring 9.Clutch tooth cover 10 is fixedly assemblied in the front end of collet body 11.
Actuator 5 is rotating to be set on collet body 11, bearing member 3 " and axle sleeve 7 is also rotating is set on collet body 11.
As depicted in figs. 1 and 2, ovalizing deflection ring 09 is sleeved on and controls between cover 08 and nut sleeve 02, and the control part 083 controlling cover 08 is arranged in the reseting groove 093 of ovalizing deflection ring 09.As shown in Figure 4, control cover 08 and ovalizing deflection ring 09 relatively rotate an angle Q, the control part 083 controlling cover 08 is pressed on the outer wall of ovalizing deflection ring 09, make ovalizing deflection ring be modified to ellipse by original circle, the tooth 091 being positioned at oval major axis side engages with the tooth 101 that clutch tooth overlaps on 10.
As shown in figures 1 and 3, key 092 on ovalizing deflection ring 09 is inserted between two keys 54 of actuator 5, and with actuator 5 locking phase, Q angle is rotated to overcoat 8, wherein, the key 54 of actuator 5 and the key 092 of ovalizing deflection ring 09 move between grooving sidewall 801 and 802 outside.
As shown in Figure 5, bearing member 3 " clutch for clutch control portion 33 engage with the locating slot 23 of nut sleeve 2.As shown in Figure 6, when bearing member 3 " when relatively rotating with nut sleeve 2, bearing member 3 " clutch for clutch control portion 33 throw off and the engaging of the locating slot 23 of nut sleeve 2, and the clutch tooth 101 overlapping 10 under the effect that compresses of nut sleeve 2 outer wall with clutch tooth engages.
As shown in Figure 1 and Figure 7, the force side 62 of lever 6 upper end is engaged with the teeth groove 53 of actuator 5, support end 63 and the bearing member 3 of its lower end " teeth groove 32 engage, the rotating drive division 21 being assemblied in nut sleeve of the forced section 61 in the middle part of it.Control cover 08 and be sleeved on outer casing inner wall, the key 082 on it and groove 82 grafting of overcoat, make control overlap 08 and overcoat 8 synchronous axial system.
Fig. 8 a and Fig. 8 b shows bearing member 3 ", this load cover 3 " lower end there is teeth groove 32, upper end is provided with control part 33.
The course of work of Fig. 1 to Fig. 8 b to the reinforced self-locking holder for drill of the present embodiment is described below.
Clamping tool handle process is as follows:
Jaw do not clamp pad be in do not stress state time, nut is in state free to rotate, now the clutch for clutch control portion 33 of bearing member 3 depends on elastic force to mesh together (as shown in Figure 5) with the locating slot 23 of nut sleeve, make bearing member 3 and nut sleeve 2 synchronous axial system, the forced section of lever 6 connects with the drive division 21 of nut sleeve, and support end 63 engages (as shown in Figure 7) with the teeth groove 32 of bearing member, so under this state, lever 6 and nut sleeve 2, bearing member 3 synchronously freely rotate, and lever 6 does not rotate.
Simultaneously, the control part 083 controlling to overlap in the above-described state is arranged in the reseting groove 093 (as shown in Figure 2) of ovalizing deflection ring, control is made to overlap 08 and ovalizing deflection ring 09 synchronous axial system, and control the key 082 of cover and groove 82 grafting (as shown in Figure 1 and Figure 7) of overcoat, the key 092 of ovalizing deflection ring is plugged between two keys 54 of actuator, so under this state during rotating jacket 8, control cover 08, ovalizing deflection ring 09 and actuator 5 and overcoat 8 synchronous axial system.
Because the force side 62 of lever 6 is engaged with the teeth groove 53 of actuator, so in the above-described state (when jaw does not clamp pad), one rotating jacket, control cover, ovalizing deflection ring, actuator, lever, force bearing ring, nut sleeve and nut to rotate around collet body axis all simultaneously, and jaw screw thread engages with nut thread, thus the rotation of nut changes the movable of jaw into.
It is as follows that reinforcement clamps and lock locking process:
Rotating jacket is when jaw clamps pad, and all parts that can rotate around collet body axis are all subject to resistance.For clamping tool handle, reinforcing is needed to be rotated further overcoat.
1. when rotating torque is increased to a certain value, first the reseting groove 093 of control part 083 skids off, turn over Q angle, outer grooving sidewall 802 contacts (as shown in Figure 3) with key 54 simultaneously, control part 083 oppresses the raw ovalizing deflection of ovalizing deflection environment-development, the circle being D by original radius becomes that major axis is D1, minor axis is the ellipse of d1, the tooth 091 that ovalizing deflection ring distributes some engage (as shown in Figure 4) with the tooth 101 that clutch tooth overlaps.
2. continue afterburning rotating jacket, groove sidewall 802 promotes key 54 and drives the equidirectional rotation of actuator 5.Now, nut and nut sleeve can not be rotated because jaw clamps pad, make it to rotate around the location division 21 of nut sleeve so actuator 5 promotes lever 6, consequently the fulcrum promotion bearing member 3 of lever starts to rotate to overcoat rightabout, clutch for clutch control portion 33 is forced to skid off (as shown in Figure 5 and Figure 6) from locating slot 23, the tooth 101 that pawl point and the clutch tooth in clutch for clutch control portion 33 overlap meshes together, namely in this case, bearing member and clutch tooth overlap collet body and are fixed together, without relatively rotating.
At this moment afterburning rotating jacket is continued again, then actuator 5 drives lever 6 (to engage with bearing member 3 around support end 63, bearing member 3 now with collet body without relatively rotating) rotate, drive nut sleeve 2 and nut 12 to rotate a little around collet body axis by forced section 61 by drive division 21, and drive the afterburning clamping tool handle of jaw.
In stressed transmission process, 1. the screw-driven of nut and jaw creates boosting function above, 2. lever L>l, actuator puts on the power of the force side of lever, being transformed into the moment promoting nut rotation is a lever augmented process, like this, put on the outer moment put through above process, put on by reinforcement and clamp pad.
Simultaneously, because the tooth 091 of ovalizing deflection ring engages with the tooth 101 that clutch tooth overlaps, make to overlap 10 by key 092 with the relative clutch tooth of actuator 5 that key 54 is connected with ovalizing deflection ring can not rotate backward, thus lever, nut sleeve, nut also relatively clutch tooth cover (and collet body) can not relatively rotate, such tooth 091 engages with tooth 101, under vibration operating mode, serve and prevent the locking effect of the vibrated and counter-rotational locking of nut.
Back off tool handle process is as follows:
Rotate backward overcoat 8, drive and control cover 08 synchronous axial system, until control part 083 forwards reseting groove 093 position to, in the presence of a tensile force, control part 083 enters (as shown in Figure 2) in reseting groove 093, tooth 091 is also thrown off with tooth 101 and is engaged, and outer grooving sidewall 801 now also contacts with key 54.
Be rotated further overcoat 8, then groove sidewall 801 promotes actuator 5 by key 54 and rotates, promote lever 6 to rotate around support end 63, and drive nut to rotate backward, until the locating slot 23 of nut sleeve rotates clutch for clutch control portion 33 correspondence position of bearing member, in the presence of a tensile force, control part 33 enters in locating slot 23, its pawl point is also thrown off with tooth 101 and is engaged, when continuing again to rotate backward overcoat, control piece 5, lever 6, bearing member 3, nut sleeve 2 and nut 12 synchronous axial system, until jaw is totally released pad.
By describing above and can finding out, in the present embodiment, self-locking mechanism is formed by controlling cover 08, ovalizing deflection ring 09 and clutch tooth cover 10.
Ovalizing deflection ring is critical component, the normal morphology (the first form) of this ovalizing deflection ring 09 is circular, working morphology (the second form) is oval, longitudinal end is provided with external tooth 091, for engaging with the internal tooth 101 of shifter collar 10.Control cover 08, for controlling the metamorphosis of ovalizing deflection ring, in the present embodiment, it is realized by control part 083, matches with it, ovalizing deflection ring 09 with the periphery of 90 degree, outer space of teeth on form reseting groove 093.
Wherein, control part 083 is arranged in reseting groove 093 when initial position, when controlling cover relative elliptical Shape-changeable ring 09 and rotating, control part 083 departs from reseting groove 093, be pressed on the outer wall of ovalizing deflection ring 09, make ovalizing deflection ring 09 be out of shape ovalize, the tooth 091 on ovalizing deflection ring major axis can be realized like this and engage with the internal tooth 101 of shifter collar.So, by selecting the shape of internal tooth and external tooth, ovalizing deflection ring can be limited relative to collet body 11 one-directional rotation or do not rotate, thus forming the self-locking mechanism wanted.
Second embodiment
Fig. 9 to Figure 14 shows self-locking clamping chuck of drill bit according to a second embodiment of the present invention.The difference of the present embodiment and the first embodiment: eliminate lever 6, actuator 5 and bearing member 3 ".
Be described below in conjunction with reference to the assembly relation of Fig. 9 to Figure 14 to each parts of the self-locking clamping chuck of drill bit of the present embodiment.
As shown in Fig. 9 to Figure 14, nut sleeve has key 202, controls, in the groove between groove sidewall 801 and 802 that the key 082 of cover 08 is assemblied in overcoat, to control cover 08 and overcoat synchronous axial system; The key 202 of nut sleeve and the key 092 of ovalizing deflection ring between outer grooving sidewall 802,801, and can rotate Q angle relative to overcoat.
As depicted in figure 10 and figure 13, under, jaw free to rotate at overcoat moves freely state, the control part 083 controlling cover is arranged in the reseting groove 093 of ovalizing deflection ring, and key 092 and key 202 are close to outer grooving sidewall 801 successively.
Figure 12 a and Figure 12 b shows the expanded view of ovalizing deflection ring.The attachment 096 of ovalizing deflection ring 09 is tied making the upper ring section 09a of ovalizing deflection ring 09 and lower ring portion 09b two parts.In Figure 12 a, circumferentially, in Figure 12 b, connection part 096 extends connection part 096 vertically.
Below the course of work of the self-locking clamping chuck of drill bit of the present embodiment is described.
Clamping drillstock process is as follows:
After rotating forward overcoat, jaws contact drillstock, when being rotated further overcoat, the control part 093 overlapped with the control of overcoat synchronous axial system deviates to rotate Q angle from the reseting groove 083 of ovalizing deflection ring, slide into the position of location division 095, the internal tooth 101 that the tooth 091 being positioned at this oval major axis and clutch tooth overlap also enters engagement, and the sidewall 802 of overcoat contacts with the key 092 of ovalizing deflection ring.
Be rotated further overcoat again, then the sidewall 802 of overcoat promotes key 092, and ovalizing deflection ring 09, nut sleeve 2 and screw 12 are rotated around collet body axis, drives jaw reinforcing clamping drillstock.The engaging to play of tooth 091 and tooth 101 locks locking effect.
Unclamp drillstock process as follows:
To unclamp drillstock, then rotate backward overcoat and drive and control cover 08 together, first relative elliptical Shape-changeable ring 09 and nut sleeve 2 oppositely go back to Q angle, control part 083 is made to return in reseting groove 093, and tooth 091 is under the elastic force of ovalizing deflection ring 09 and the effect of projection 081, also the tooth 101 overlapped with clutch tooth is thrown off, and the sidewall 801 of overcoat contacts with driving key 202.Rotating jacket and control cover again, then nut sleeve 2 and ovalizing deflection ring 09 make jaw unclamp drillstock thereupon rotating.
By describing above and can finding out, the self-locking mechanism difference in self-locking mechanism in the present embodiment and the first embodiment is, in the present embodiment, ovalizing deflection ring 09 is driven by the sidewall 801,802 of overcoat 8.Control cover 08 and be provided with projection 081, contribute to the ovalizing deflection ring after making distortion and revert to circle, thoroughly throw off with the tooth 101 making hock 091 and clutch tooth overlap 10 and engage.In addition, the ovalizing deflection ring 09 in the present embodiment is connected by connection part 096 by upper and lower two parts.
Figure 15 to Figure 17 shows self-locking clamping chuck of drill bit according to a third embodiment of the present invention.
The difference of the present embodiment and the second embodiment is: by the nut sleeve 2 of the second embodiment and ovalizing deflection ring 09 all-in-one-piece ovalizing deflection processed ring 09 "; i.e. ovalizing deflection ring 09 " rear portion (nut sleeve function) split screw 12 is tightened to one, thus split screw 12 is located on collet body, front portion is shaped with reseting groove 093, location division 095 and tooth 091.
Figure 18 to Figure 22 shows self-locking clamping chuck of drill bit according to a fourth embodiment of the present invention.Below in conjunction with Figure 18 to Figure 22, the assembly relation between each parts is described.
Drill chuck is connect with the driving shaft of power equipment by the screw (or taper hole) of coupling sleeve 04, and the axle 045 of coupling sleeve is rotating to be arranged in the connection holes 111 of collet body.
Intermediate sleeve 05 and ovalizing deflection ring rear portion be fixedly connected and with ovalizing deflection ring 09 " and nut 12 synchronous axial system; the Access Division 051 of intermediate sleeve and drive key 052 to connect with the buckling groove 041 of coupling sleeve and driver slot 042 respectively; thus make that intermediate sleeve 05 and coupling sleeve 04 are axial to be linked together, and synchronous axial system.Ovalizing deflection cover 09 " and nut 12 also synchronous axial system together.
Drag ring 07 is rotating to be arranged between bearing 16 and collet body force-bearing table 112.Jack 102 and 046 is arranged for ease of laborsaving back off tool handle.
Below the course of work of the self-locking clamping chuck of drill bit of the present embodiment is described.
Clamping tool handle process is as follows:
During work, first hand-held clutch tooth cover 10 " and coupling sleeve 04 forward relatively rotate, drive nut 12 rotates relative to collet body, and drives jaw 13 to clamp pad; Rotate backward the grip part 084 controlling cover again, control part 083 is skidded off from reseting groove 093 (as shown in figure 21), forwards position, location division 095 (as shown in figure 22) to, tooth 091 also enters engagement with tooth 101.
In this case, nut, ovalizing deflection cover can not rotate backward, and namely nut is in can not gets loose because of vibration to prevent clamped instrument by counter-rotational locking state relative to collet body and jaw.When now carrying out the operations such as boring with power equipment, power equipment forms to the forward drive moment of coupling sleeve and nut and the opposing torque of bore operation to pad, jaw the moment clamped pad, makes jaw clamp pad firmly.
Back off tool handle process is as follows:
If for back off tool handle, first rotate forward grip part 084, make control part 083 rotate the home position shown in Figure 21 from position shown in Figure 22, remove locking state, more relatively rotate backward clutch sleeve 10 " and coupling sleeve 04, can to unclamp.
Drag ring 07 in above-mentioned operation process, produces the excessive clamping force to pad for preventing, and excessive clamping force to cause after operation not easily back off tool handle.
The operation principle arranging drag ring 07 is as follows: when driving clamping force to be no more than a certain limit value, power equipment is delivered to the moment of the forward drive clamping of ovalizing deflection cover 09 through intermediate sleeve from coupling sleeve 04, drive drag ring 07 and nut 12 synchronous axial system (rolling bearing 16 does not roll) through driving claw 099.
When the clamping force of jaw to pad increases gradually, nut is also increased gradually by the pressure of bearing 16 pairs of drag rings 07, frictional resistance between drag ring 07 and force-bearing table 112 also increases gradually, when increasing to certain value, driving claw 099 overcomes the less elastic force of self and skids off from teeth groove 073, then ovalizing deflection cover is together with driving claw 099, drive key 097,098 and nut together to rotate (at this moment rolling bearing 16 rolls), drive key 098 to contact with the key sidewall 072 of drag ring until turn over a angle.
Because above-mentioned state is after jaw clamps pad, nut again opposing fingers turns over a angle, the clamping force produced and the frictional force between drag ring 07 and force-bearing table 112 increase greatly, at this moment jaw is increased to the clamping force of pad to continue, except the frictional resistance that will overcome nut and jaw screw thread, the drag ring 07 that the driving key 098 that ovalizing deflection overlaps also will promote to be subject to very large frictional resistance rotates, that is the driving moment of power equipment applying, have greatly by driving key 098 and drag ring 07 to directly act on collet body, small part is only had to continue to increase clamping force for drive nut, just be difficult to afterwards improve again so the clamping force of jaw to pad reaches a certain value.
When unclamping, the key 098,097 of ovalizing deflection cover and driving claw 099 rotate to unclamping direction, drag ring 07 is first motionless, the first Relative friction ring 07 of rolling bearing 16 rotates, because rolling frictional resistance is much smaller than sliding-frictional resistance, so just can oppositely turn over a angle by less power, key 097 is contacted with key sidewall 071.Because oppositely turn over a angle, the normal pressure between drag ring 07 and force-bearing table 112 and frictional force reduce greatly, now only need less power just can be rotated further ovalizing deflection cover, drag ring and nut sleeve again, until jaw back off tool handle.
It will be understood by those skilled in the art that ovalizing deflection cover in the present embodiment and foregoing ovalizing deflection ring the basic role that rises identical, form shell-like because gripping.
Figure 23 shows self-locking clamping chuck of drill bit according to a fifth embodiment of the present invention.The difference of the present embodiment and the second embodiment is: the rear cover of drill chuck doubles as clutch tooth and overlaps 10, its inner periphery is formed with tooth 101, engages controllably with the tooth 091 of the longitudinal end with ovalizing deflection ring 09.
Figure 24 and Figure 25 shows self-locking clamping chuck of drill bit according to a sixth embodiment of the present invention, illustrated therein is the variant embodiment of self-locking mechanism.
As shown in figures 24 and 25, the internal perisporium of ovalizing deflection ring 09 has internal tooth 091, clutch tooth cover 10 is positioned at the inner side of ovalizing deflection ring 09, has external tooth 101, when ovalizing deflection ring changes into ellipse by positive round deformation, the external tooth that internal tooth 091 and the clutch tooth of ovalizing deflection ring overlap 10 engages.
The control part 083 controlling cover 08 overlaps in the gap between 10 at ovalizing deflection ring 09 and clutch tooth, is changing between positive circle and ellipse for controlling ovalizing deflection ring.
Ovalizing deflection ring 09 is provided with the reseting groove 093 being positioned wherein (as shown in figure 24) for the control part 083 controlling cover 08.When controlling cover 08 relative elliptical Shape-changeable ring 09 and rotating an angle, control part 083 throws off locating slot 093, the sidewall compressing ovalizing deflection ring makes its modification ovalize, and so, 091, the tooth of ovalizing deflection ring can be meshed with the external tooth that clutch tooth overlaps 10 and realize self-locking.
By describing above and can finding out, self-locking mechanism of the present invention may be used in the drill chuck of various structures, and it is that the design of the self-locking mechanism of drill chuck provides a kind of brand-new thinking.
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 done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Description of reference numerals
2---nut sleeve 21---drive division
23---locating slot 24---lower ring portion
3 "---bearing member 32---teeth groove
33---clutch for clutch control portion
4---lock ring 44---ratchet
45---key 46---location division
47---ratchet
04---coupling sleeve 041---buckling groove
042---driver slot 045---axle
046---jack
05---intermediate sleeve 051---Access Division
052---drive and build 5---actuator
53---teeth groove 54---key
6---lever 61---forced section
62---force side 63---support end
7---axle sleeve 72---ball
07------drag ring 071,072-----key sidewall
073------teeth groove
8---overcoat 801,802---groove sidewall
82---groove
08---controlling cover 081---projection
082---key 083---control part
084---grip part
09,09 "---ovalizing deflection ring 091---tooth
092---key 093---reseting groove
095---location division 096---attachment
097,098-----drives key 099---driving claw
9---packing ring
10,10 "---clutch tooth cover 101---tooth of clutch tooth cover
102---jack 11---collet body
111---connection holes (axis hole, screwed hole or taper hole)
112---force-bearing table 12---nut
13---jaw 14---jump ring
15---bearing gasket 16---bearing
18---bonnet.
Claims (4)
1. a self-locking mechanism, in drill chuck, is characterized in that, comprising:
Clutch tooth cover (10,10 "), be fixedly attached to the collet body (11) of described drill chuck, it forms tooth (101);
Ovalizing deflection ring (09,09 "); there is almost circular first form and basic the second oval form; wherein; the sidewall of described ovalizing deflection ring (09,09 ") has tooth (091), described tooth (091) is meshed with the tooth (101) of described clutch tooth cover (10,10 ") when described ovalizing deflection ring (09,09 ") is in described second form;
Controlling cover (08), changing between described first form and the second form for controlling described ovalizing deflection ring (09,09 ");
Position limiting structure; And
Coupling sleeve (04);
Wherein, the described control part (083) controlling cover (08) to have for extruding described ovalizing deflection ring (09,09 ") sidewall;
The sidewall of described ovalizing deflection ring (09,09 ") has and receives the described reseting groove (093) controlling the control part (083) of cover (08);
Described position limiting structure is the groove sidewall (801,802) that the inwall of the overcoat (8) of described drill chuck is arranged, wherein, the key (092) of described ovalizing deflection ring (09,09 ") is limited among described groove sidewall (801,802);
The axle (045) of described coupling sleeve (04) is rotating to be arranged in the connection holes (111) of described collet body (11);
The outer surface of the clutch tooth cover of described self-locking mechanism (10 ") forms grip part, and described control cover (08) has the grip part (84) be positioned between described clutch tooth cover (10 ") and described coupling sleeve (04).
2. self-locking mechanism according to claim 1, is characterized in that:
Described position limiting structure is for limiting described ovalizing deflection ring (09,09 ") and the described relative rotation controlled between cover (08).
3. self-locking mechanism according to claim 1, is characterized in that,
Described position limiting structure is for being arranged at the location division (095) on described ovalizing deflection ring (09,09 ").
4. self-locking mechanism according to any one of claim 1 to 3, is characterized in that,
The described projection (081) controlling cover (08) to be provided with for making described ovalizing deflection ring (09) be held in described first form.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172068.7A CN102001006B (en) | 2009-09-01 | 2009-09-01 | Reinforcing self-locking drill chuck and self-locking mechanism thereof |
| DE102010001013.8A DE102010001013B4 (en) | 2009-01-19 | 2010-01-19 | Power-increasing self-locking drill chuck and its self-locking device |
| US12/689,278 US8740227B2 (en) | 2009-01-19 | 2010-01-19 | Force increasing self-locking drill chuck and self-locking mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172068.7A CN102001006B (en) | 2009-09-01 | 2009-09-01 | Reinforcing self-locking drill chuck and self-locking mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102001006A CN102001006A (en) | 2011-04-06 |
| CN102001006B true CN102001006B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910172068.7A Active CN102001006B (en) | 2009-01-19 | 2009-09-01 | Reinforcing self-locking drill chuck and self-locking mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102001006B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394734B (en) * | 2013-07-19 | 2016-02-17 | 威海达旺五金制品有限责任公司 | Self-tightening self-locking clamping chuck of drill bit |
| CN108213478B (en) * | 2018-01-19 | 2024-07-12 | 浙江三鸥机械股份有限公司 | Drill chuck capable of increasing loosening torque |
| CN108274051B (en) * | 2018-02-11 | 2024-07-30 | 浙江三鸥机械股份有限公司 | Self-locking drill chuck |
| CN110039083A (en) * | 2019-04-25 | 2019-07-23 | 山东威达雷姆机械有限公司 | A kind of locking drill chuck |
| TWI723499B (en) * | 2019-08-16 | 2021-04-01 | 優藶國際有限公司 | High strength damping chuck |
| CN114229456B (en) * | 2022-01-27 | 2023-11-03 | 中原工学院 | Novel mechanical clamping jaw for mechanical manufacturing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201505829U (en) * | 2009-09-01 | 2010-06-16 | 山东威达机械股份有限公司 | Reinforcement self-locking drill clamping head and self-locking mechanism thereof |
| CN201677051U (en) * | 2010-01-18 | 2010-12-22 | 山东威达机械股份有限公司 | Force increasing self-locking drill chuck and self-locking mechanism thereof |
-
2009
- 2009-09-01 CN CN200910172068.7A patent/CN102001006B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201505829U (en) * | 2009-09-01 | 2010-06-16 | 山东威达机械股份有限公司 | Reinforcement self-locking drill clamping head and self-locking mechanism thereof |
| CN201677051U (en) * | 2010-01-18 | 2010-12-22 | 山东威达机械股份有限公司 | Force increasing self-locking drill chuck and self-locking mechanism thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102001006A (en) | 2011-04-06 |
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