CN103212739A - Double main supporting type self-fastening drill chunk - Google Patents
Double main supporting type self-fastening drill chunk Download PDFInfo
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- CN103212739A CN103212739A CN2013101361816A CN201310136181A CN103212739A CN 103212739 A CN103212739 A CN 103212739A CN 2013101361816 A CN2013101361816 A CN 2013101361816A CN 201310136181 A CN201310136181 A CN 201310136181A CN 103212739 A CN103212739 A CN 103212739A
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- shaft shoulder
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- 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
- B23B31/1253—Jaws movement actuated by an axially movable member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/38—Keyless chucks for hand tools
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- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Drilling And Boring (AREA)
Abstract
The invention belongs to the technical field of machinery, and relates to a double main supporting type self-fastening drill chunk. The double main supporting type self-fastening drill chunk solves the problem that in the prior art, a design is unreasonable. The double main supporting type self-fastening drill chunk comprises a cylindrical main body, a locking screw is connected at the lower end of the main body in a threaded mode, a plurality of clamping jaws are arranged at the lower end of the locking screw, the main body is arranged on an integrated type bearing guiding seat which is of a tubular shape, the upper portion of the integrated type bearing guiding seat is an integrated type bearing guiding part which is of a circular barrel shape, the lower portion of the integrated type bearing guiding seat is a clamping jaw guide rail part which is of a conical barrel shape, a plurality of guiding grooves are formed in the clamping jaw guide rail part, the clamping jaws correspond to the guiding grooves in a one-to-one mode and are arranged in the guiding grooves, an end cover is further fixedly connected at the lower end of the integrated type bearing guiding seat in a sleeved mode, the end cover is located at the periphery of the clamping jaws and is of a conical barrel shape, and a first main supporting structure and a second main supporting structure are arranged between the main body and the integrated type bearing guiding seat and distributed along the axial direction of the main body. The double main supporting type self-fastening drill chunk has the advantages that the design is reasonable, the structure is simple, the supporting effect is good, the working stability of the drill chunk is effectively improved, and working precision is improved.
Description
Technical field
The invention belongs to field of mechanical technique, relate to keyless drill chuck, especially relate to a kind of two main supporting type keyless drill chuck.
Background technology
Along with development of social productivity, the use of drill chuck is very extensive, employed bench drill, electric hand drill or lathe etc. mechanically all can need to carry out work with instruments such as drill chuck clamping drilling bit or cutters in industries such as machine-building, electronic apparatus, construction and installation, house decoration.Existing drill chuck has two types usually: a kind of is the Wrench-type drill chuck, the clamping force of this drill chuck depends on the moment that spanner applies, and clamping and pine needs aid when unloading drill bit, the use aid tightens or unclamps drill chuck and come installation or removal drill bit or cutter, operate cumbersomely, waste time and energy; Another kind is a self-tightening drill chuck.Self-tightening drill chuck utilizes the rotation after drill bit is installed by the principle of self-tightening, tightens drill bit or cutter by screw thread automatically, is easy to when instruments such as clamping drill bit or cutter.
Conventional keyless drill chuck generally includes main body, lock-screw, jaw, ball, end shield, jaw seat, end cap and ball lid.It is that the ball lid is divided into two that a kind of product structure is also arranged, and one is the ball lid, and one is the end shield tube, a plug-in unit is promptly arranged between main body and end shield tube, and add a front cover end cap in the above, runs out of to prevent ball, and this plug-in unit promptly is the ball lid.Ball lid (non-plug-in unit is the sort of) inner chamber has a ring-shaped step, main body is a cylinder, an annular shaft shoulder is arranged on the periphery, a circle ball is distributing between the ring-shaped step of the annular shaft shoulder of main body and ball lid, main body is loaded in the pilot sleeve that is stitched together by ball lid and jaw seat, and this pilot sleeve is to be stitched together by the thread connection that end shield and ball cover.Being connected axle head with external equipment in main body has an end cap, mainly plays and rotates main body and prevent that the ball lid breaks away from subjective role.The head of jaw seat has three guide grooves, and jaw all is housed in the guide groove, and the center of main body is a through hole, and a lock-screw is arranged in this through hole, and lock-screw links by screw thread and main body, and the inner end shield of each jaw is connected to the head of lock-screw.
Obviously, no matter the drill chuck of which kind of type, its positioning accuracy is the major criterion of decision drill chuck quality.The advantage of conventional keyless drill chuck is: Parts manufacturing technology requires relatively low, and manufacturing cost is light, and the axiality coupling between the part requires low relatively, and the drill chuck general assembly is convenient.But have obvious defects aspect the globality of drill chuck, all part all depends on the thread connection situation of end shield and ball lid, loses end shield, and drill chuck just falls apart single-piece one by one.And the advantage that allows main body and other parts to be combined with the big free degree also becomes a big defective of above-mentioned drill chuck, when practical application, is difficult to guarantee the drill chuck job stability.In the prior art, drill chuck lacks the supporting structure that makes radial and axial location, when practical application, is difficult to guarantee job stability, and precision is lower.Though the drill chuck of certain structures has seemed supporting structure, in fact all do not realize real supporting, even if there is supporting structure, but, also be difficult to give full play to its supporting role because design is reasonable inadequately.
Summary of the invention
The objective of the invention is at the problems referred to above, a kind of good operating stability is provided, the two main supporting type keyless drill chuck that precision is high.
For achieving the above object, the present invention has adopted following technical proposal: the main supporting type keyless drill chuck of this pair, comprise cylindrical main body, in the main body lower end by the lock-screw that has been threaded, be equipped with axial in the lock-screw lower end with respect to lock-screw, circumferentially locate and radially movably some jaws, it is characterized in that, described main body is located in the tubular integral type guidance seat, the top of this integral type guidance seat is that cylindrical circular monoblock type is held the portion of leading, the bottom is the jaw rail portion that is taper barrel, and have some guide grooves in the jaw rail portion, described monoblock type holds the portion of leading and the jaw rail portion is connected as a single entity structure, described jaw is arranged in the guide groove with corresponding one by one setting of guide groove and jaw, be provided with between described main body and the integral type guidance seat and be axle bed cylindraceous, described integral type guidance seat lower end also fixed cover is connected to the end shield that is positioned at the jaw periphery and is taper barrel, being provided with between described main body and the integral type guidance seat can be to distinguishing the axial of main body, radially, the first main supporting structure and the second main supporting structure of angle location, the described first main supporting structure and the second main supporting structure are along the main body axial distribution.Among the present invention, axle bed by the location division stationary positioned on integral type guidance seat positioning step and the axle bed upper surface flush substantially with integral type guidance seat upper end.Among the present invention, integral type guidance seat lower end is by the fixedly sleeved end shield of positioning step.Among the present invention, the quantity of jaw and guide groove is three, and evenly distributes in a circumferential direction respectively.Among the present invention, jaw can move up and down along with the work of main body and lock-screw, realizes the function that clamps or unclamp instruments such as drill bit thus.
Supporting is divided into main supporting and aiding support, and main supporting is a kind of supporting that plays the effect of restraint of liberty degree, is used to realize the radial and axial location of main shaft; Aiding support does not play the role of positioning.Supporting structure is made up of two essential parts usually, i.e. movement parts and hold guiding element.Main body is the parts of drill chuck contact external device drives axle and instruments such as drill bit or cutter, so its function is equivalent to the extension of driving shaft, in case main body occurs moving radially when work, disturbance or axial float, will have a strong impact on the drill chuck operating accuracy.For this reason, need well main body to be supported.This pair of main supporting type keyless drill chuck adopts the double base technology, two supportings all are main supportings, main body is the drill chuck main shaft, form a main shaft casing by integral type guidance seat, two main supportings are set in the main shaft casing, form a stable axis system thus, realize to main body axially, radially, the angle location, improve body of work stability effectively, ensured the drill chuck operating accuracy.Among the present invention, integral type guidance seat can be divided into two parts according to function, and the one, jaw rail portion, i.e. integral type guidance seat head; The one, monoblock type is held the portion of leading, i.e. the part that is connected as a single entity with integral type guidance seat head.
In above-mentioned two main supporting type keyless drill chuck, the monoblock type of described integral type guidance seat is held and is provided with ring-shaped step in the portion of leading, and the periphery of described main body is provided with the annular shaft shoulder, and the described annular shaft shoulder is arranged on the ring-shaped step.
In above-mentioned two main supporting type keyless drill chuck, the described first main supporting structure comprises lower body part, in lower body part radially and first radial plain bearing between the integral type guidance seat and be arranged on first thrust bearing between the annular shaft shoulder and the ring-shaped step, and described first radial plain bearing is positioned at annular shaft shoulder below.Among the present invention, first radial plain bearing provides radial support for lower body part, and first thrust bearing provides the axially mounting that axially makes progress for main body.
In above-mentioned two main supporting type keyless drill chuck, described first radial plain bearing is the ring-shaped step sidepiece that monoblock type is held the portion of leading; Be arranged on the lower body part periphery and be positioned at first trunnion of annular shaft shoulder below and be arranged on corresponding setting of first inner headed face of ring-shaped step sidepiece, and described first trunnion is supported on first inner headed face.
In above-mentioned two main supporting type keyless drill chuck, described first thrust bearing is a thrust slide bearing, comprises the annular shaft shoulder bottom of main body and the ring-shaped step top that monoblock type is held the portion of leading; First planar annular that is arranged on annular shaft shoulder bottom is provided with second planar annular that is arranged on ring-shaped step top is corresponding, and described first planar annular is supported on second planar annular.
In above-mentioned two main supporting type keyless drill chuck, the described second main supporting structure comprises main body top and composite bearing, described composite bearing sidepiece and main body top form second radial plain bearing between radially, form second thrust bearing between described composite bearing bottom and the annular shaft shoulder top, and described second radial plain bearing is positioned at annular shaft shoulder top.Among the present invention, second radial plain bearing provides radial support for main body top, and second thrust bearing provides axially downward axially mounting for main body.
In above-mentioned two main supporting type keyless drill chuck, described composite bearing comprises that plurality of balls, monoblock type are held leads portion top, annular shaft shoulder top and is arranged on main body top and monoblock type is held and led between the portion top and tubular axle bed, and described plurality of balls is arranged between axle bed and the annular shaft shoulder top.
In above-mentioned two main supporting type keyless drill chucks, described second radial plain bearing comprises that axle bed sidepiece and monoblock type are held and leads portion top; Be arranged on main body top periphery and be positioned at second trunnion and the corresponding setting of second inner headed face that is arranged on the axle bed inboard of annular shaft shoulder top, and described second trunnion is supported on second inner headed face, holds the portion top of leading by the forced structure of positioning step with monoblock type outside the described axle bed and fixedlys connected.
In above-mentioned two main supporting type keyless drill chucks, described second thrust bearing is a thrust bearing, comprises that monoblock type is held to lead portion top, axle bed bottom, plurality of balls and annular shaft shoulder top; The 3rd planar annular that is arranged on annular shaft shoulder top is provided with in opposite directions with the ring-type arcuate groove that is arranged on the axle bed bottom, described plurality of balls all is arranged between the 3rd planar annular and the ring-type arcuate groove and ball contacts with the ring-type arcuate groove with the 3rd planar annular respectively, described the 3rd planar annular by ball bearing on the ring-type arcuate groove.
Among the present invention, monoblock type is held the component part that the portion of leading is first radial plain bearing, second radial plain bearing, first thrust bearing, second thrust bearing, is again the bearing block of four bearings.
In above-mentioned two main supporting type keyless drill chuck, pass integral type guidance seat and axle bed on the described main body and be with elastic cover thereon, described main body is circumferentially fixedlyed connected with elastic cover.
Compared with prior art, the advantage of the main supporting type keyless drill chuck of this pair is: reasonable in design, simple in structure, support effects is good, effectively promotes the drill chuck job stability, improves operating accuracy.First thrust bearing and second thrust bearing lay respectively at the below and the top of the annular shaft shoulder, realized body shaft to stable position and supporting; First radial plain bearing and second radial plain bearing be distributed in body shaft to, realized main body radially stable position and supporting; First thrust bearing and first radial plain bearing cooperatively interact and constitute a bearing group, have realized the stable position and the supporting of lower body part; Second thrust bearing and second radial plain bearing cooperatively interact and constitute a bearing group, have realized the stable position and the supporting on main body top; Two groups of bearings interact, and have realized the monolithic stability location and the supporting of main body.Furtherly, first thrust bearing, second thrust bearing, first radial plain bearing and second radial plain bearing interact, finished to main body axially, radially, comprehensive supporting of angle.On the other hand, the overall structure of integral type guidance seat is closely connected the two main supporting structure and the jaw rail portion of the main supporting type keyless drill chuck of this pair together again, make the work functions district that constitutes by jaw, lock-screw, jaw rail portion, end shield become the organic composition of drill chuck axis system, become main body as of the effective extension of drill chuck main shaft, realized the stable co-ordination of whole drill chuck at the other end.
Description of drawings
Fig. 1 is the structural representation that partly cuts open provided by the invention.
Among the figure, main body 1, lock-screw 2, jaw 3, integral type guidance seat 4, monoblock type is held the portion of leading 5, jaw rail portion 6, guide groove 7, end shield 8, the annular shaft shoulder 9, first radial plain bearing 10, first thrust bearing 11, first trunnion 12, first inner headed face 13, first planar annular 14, second planar annular 15, composite bearing 16, second radial plain bearing 17, second thrust bearing 18, ball 19, axle bed 20, second trunnion 21, second inner headed face 22, the 3rd planar annular 23, ring-type arcuate groove 24, elastic cover 25, first oil storage tank 26, second oil storage tank 27, the 3rd oil storage tank 28, ring-shaped step 29.
The specific embodiment
Embodiment 1:
As shown in Figure 1, the main supporting type keyless drill chuck of this pair comprises parts such as main body 1, lock-screw 2, jaw 3, integral type guidance seat 4, end shield 8, axle bed 20, ball 19, elastic cover 25.Main body 1 is cylindric, in main body 1 lower end by the lock-screw 2 that has been threaded, be equipped with in lock-screw 2 lower ends with respect to lock-screw 2 axially, circumferentially location and three jaws 3 movably radially.Main body 1 is located in the tubular integral type guidance seat 4, and the top of this integral type guidance seat 4 is that cylindrical circular monoblock type is held the portion of leading 5, and the bottom is the jaw rail portion 6 that is taper barrel.Be that integral type guidance seat 4 can be divided into two parts according to function, the one, jaw rail portion 6, i.e. integral type guidance seat 4 bottoms; The one, monoblock type is held the portion of leading 5, i.e. integral type guidance seat 4 tops; And jaw rail portion 6 and monoblock type are held the portion of leading 5 and are connected as a single entity.Have some guide grooves 7 in jaw rail portion 6, monoblock type holds the portion of leading 5 and jaw rail portion 6 is integral structure.Jaw 3 is arranged in the guide groove 7 with corresponding one by one setting of guide groove 7 and jaw 3.Be provided with between main body 1 and the integral type guidance seat 4 and be axle bed 20 cylindraceous.Integral type guidance seat 4 lower ends also fixed cover are connected to the end shield 8 that is positioned at jaw 3 peripheries and is taper barrel.Among the present invention, axle bed 20 by the location division stationary positioned on integral type guidance seat 4 positioning steps and axle bed 20 upper surfaces flush substantially with integral type guidance seat 4 upper end.Among the present invention, integral type guidance seat 4 lower ends are by the fixedly sleeved end shield 8 of positioning step.Among the present invention, jaw 4 is three with the quantity of guide groove 7, and evenly distributes in a circumferential direction respectively.Among the present invention, jaw 4 can move up and down along with the work of main body 1 and lock-screw 2, realizes the function that clamps or unclamp instruments such as drill bit thus.
Be provided with between main body 1 and the integral type guidance seat 4 can be respectively to main body 1 axially, radially, the first main supporting structure and the second main supporting structure of angle location, the first main supporting structure and the second main supporting structure are along main body 1 axial distribution.Main body 1 upper end passes integral type guidance seat 4 and axle bed 20 and is with elastic cover 25 thereon, and main body 1 is circumferentially fixedlyed connected with elastic cover 25.The monoblock type of integral type guidance seat 4 is held and is provided with ring-shaped step 29 in the portion of leading 5, and the periphery of main body 1 is provided with the annular shaft shoulder 9, and the annular shaft shoulder 9 is arranged on the ring-shaped step 29.
Among the present invention, the first main supporting structure comprises main body 1 bottom, in main body 1 bottom radially and first radial plain bearing 10 between the integral type guidance seat 4 and first thrust bearing, 11, the first radial plain bearings 10 that are arranged between the annular shaft shoulder 9 and the ring-shaped step 29 be positioned at the annular shaft shoulder 9 belows.First radial plain bearing 10 holds ring-shaped step 29 sidepieces of the portion of leading 5 for monoblock type; Be arranged on main body 1 bottom periphery and be positioned at first trunnion 12 and first inner headed face, the 13 corresponding settings that are arranged on ring-shaped step 29 sidepieces of the annular shaft shoulder 9 belows, and described first trunnion 12 is supported on first inner headed face 13.First thrust bearing 11 is a thrust slide bearing, comprises the annular shaft shoulder 9 bottoms of main body 1 and ring-shaped step 29 tops that monoblock type is held the portion of leading 5; Be arranged on first planar annular 14 and second planar annular, 15 corresponding settings that are arranged on ring-shaped step 29 tops of the annular shaft shoulder 9 bottoms, and described first planar annular 14 is supported on second planar annular 15.Among the present invention, first radial plain bearing 10 provides radial support for main body 1 bottom, and first thrust bearing 11 provides the axially mounting that axially makes progress for main body 1.
Among the present invention, the second main supporting structure comprises main body 1 top and composite bearing 16, described composite bearing 16 sidepieces and main body 1 top form second radial plain bearing 17 between radially, form second thrust bearing 18 between described composite bearing 16 bottoms and the annular shaft shoulder 9 tops, and described second radial plain bearing 17 is positioned at the annular shaft shoulder 9 tops.Composite bearing 16 comprises that plurality of balls 19, monoblock type hold the portion of leading 5 tops, the annular shaft shoulder 9 tops and be arranged on main body 1 top and monoblock type is held between the portion of leading 5 tops and tubular axle bed 20, and described plurality of balls 19 is arranged between axle bed 20 and the annular shaft shoulder 9 tops.Second radial plain bearing 17 comprises that axle bed 20 sidepieces and monoblock type hold the portion of leading 5 tops; Be arranged on main body 1 top periphery and be positioned at second trunnion 21 and second inner headed face, the 22 corresponding settings that are arranged on axle bed 20 inboards of the annular shaft shoulder 9 tops, and described second trunnion 21 is supported on second inner headed face 22, and described axle bed 20 outsides are held the portion of leading 5 tops by forced structure of positioning step and monoblock type and fixedlyed connected.Second thrust bearing 18 is a thrust bearing, comprises that monoblock type holds the portion of leading 5 tops, axle bed 20 bottoms, plurality of balls 19 and the annular shaft shoulder 9 tops; The 3rd planar annular 23 that is arranged on the annular shaft shoulder 9 tops is provided with in opposite directions with the ring-type arcuate groove 24 that is arranged on axle bed 20 bottoms, described plurality of balls 19 all is arranged between the 3rd planar annular 23 and the ring-type arcuate groove 24 and ball 19 contacts with ring-type arcuate groove 24 with the 3rd planar annular 23 respectively, and described the 3rd planar annular 23 is supported on the ring-type arcuate groove 24 by ball 19.Among the present invention, second radial plain bearing 17 provides radial support for main body 1 top, and second thrust bearing 18 provides axially downward axially mounting for main body 1.
Among the present invention, monoblock type is held the significant components that the portion of leading 5 is first radial plain bearing 10, second radial plain bearing 17, first thrust bearing 11, second thrust bearing 18, is again the bearing block of these four bearings.
This pair of main supporting type keyless drill chuck can form one deck carrying oil film on ball 19 surfaces when work; Between first trunnion 12 and first inner headed face 13, form one deck carrying oil film; Between first planar annular 14 and second planar annular 14, form one deck carrying oil film; Between second trunnion 21 and second inner headed face 22, form one deck carrying oil film.
Supporting is divided into main supporting and aiding support, and main supporting is a kind of supporting that plays the effect of restraint of liberty degree, is used to realize the radial and axial location of main shaft; Aiding support does not play the role of positioning.Supporting structure is made up of two essential parts usually, i.e. movement parts and hold guiding element.Main body 1 is the parts of drill chuck contact external device drives axle and instruments such as drill bit or cutter, so its function is equivalent to the extension of driving shaft, in case main body 1 occurs moving radially when work, disturbance or axial float, will have a strong impact on the drill chuck operating accuracy.For this reason, need well main body 1 to be supported.This pair of main supporting type keyless drill chuck adopts the double base technology, two supportings all are main supportings, main body 1 is the drill chuck main shaft, form a main shaft casing by integral type guidance seat 4, two main supportings are set in the main shaft casing, form a stable axis system thus, realize to main body 1 axially, radially, the angle location, improve main body 1 job stability effectively, ensured the drill chuck operating accuracy.Among the present invention, integral type guidance seat 4 can be divided into two parts according to function, and the one, jaw rail portion 6, i.e. integral type guidance seat 4 heads; The one, monoblock type is held the portion of leading 5, i.e. the part that is connected as a single entity with integral type guidance seat 4 heads.
Among the present invention first thrust bearing 11 and second thrust bearing 18 lay respectively at the below and the top of the annular shaft shoulder 9, have realized stable position and supporting that main body 1 is axial; It is axial that first radial plain bearing 10 and second radial plain bearing 17 are distributed in main body 1, realized main body 1 radially stable position and supporting; First thrust bearing 11 and first radial plain bearing 10 cooperatively interact and constitute a bearing group, have realized the stable position and the supporting of main body 1 bottom; Second thrust bearing 18 and second entad sliding axle 17 holds formation one bearing group that cooperatively interacts, and has realized the stable position and the supporting on main body 1 top; Two groups of bearings interact, and have realized the monolithic stability location and the supporting of main body 1.Furtherly, first thrust bearing 11, second thrust bearing 18, first radial plain bearing 10 and second radial plain bearing 17 interact, finished to main body 1 axially, radially, comprehensive supporting of angle.On the other hand, the overall structure of integral type guidance seat 4 is closely connected the two main supporting structure and the jaw rail portion 6 of the main supporting type keyless drill chuck of this pair together again, make the work functions district that constitutes by jaw 3, lock-screw 2, jaw rail portion 6, end shield 8 become the organic composition of drill chuck axis system, become main body 1 as of the effective extension of drill chuck main shaft, realized the stable co-ordination of whole drill chuck at the other end.
Embodiment 2:
In the present embodiment, owing to when drill chuck is worked, can between first trunnion 12 and first inner headed face 13, form one deck carrying oil film; Between first planar annular 14 and second planar annular 15, form one deck carrying oil film; Between second trunnion 21 and second inner headed face 22, form one deck carrying oil film; Forming one deck carrying oil film between the 3rd planar annular 23 and the ring-type arcuate groove 24 and on the ball 19.Therefore form, lubricate, be convenient to store dirt simultaneously for the ease of the carrying oil film, following proposal has been adopted in this enforcement:
Between first planar annular 14 of first trunnion 12 of main body 1 and the annular shaft shoulder 9, first oil storage tank 26 is set, first oil storage tank 26 here is positioned on the main body 1, except fluid is provided, can also store the dirt that produces in the drill chuck course of work, and dirt can promote fuel feeding after entering first oil storage tank 26.Between the inwall of second planar annular 14 of ring-shaped step 29 and integral type guidance seat 4, second oil storage tank 27 is set, second oil storage tank 27 here is positioned on the integral type guidance seat 4, can be arranged on fully on second planar annular 15 of integral type guidance seat 4, also can be arranged between the inwall and second planar annular 14 of integral type guidance seat 4, also can be arranged on the inwall of integral type guidance seat 4 fully, except fluid is provided, can also store the dirt that produces in the drill chuck course of work, and dirt can promote fuel feeding after entering second oil storage tank 27.Between the 3rd planar annular 23 of second trunnion 12 of main body 1 and the annular shaft shoulder 9, the 3rd oil storage tank 28 is set, the 3rd oil storage tank 28 here is positioned on the main body 1, except fluid is provided, can also store the dirt that produces in the drill chuck course of work, and dirt can promote fuel feeding after entering the 3rd oil storage tank 28.
In addition, in the present embodiment, lock-screw 2 comprises and is provided with externally threaded cylinder and is located at cylinder lower end and external diameter greater than the head platform of cylinder, is provided with the charging crane that is used to load jaw 3 on head platform.Main body 1 center has installing hole, is provided with sinking step and the internal thread that is positioned at sinking step top in this installing hole, and lock-screw 2 cylinders insert in the installing hole and external screw thread is connected with main body 1 internal thread, and head platform can partly sink in the sinking step.Being arranged so that of sinking step realizes between lock-screw 2 and the main body 1 that decanter type is connected, makes structure compact more firm, avoids lock-screw 2 disturbances, effectively improves precision.When main body 1 is rotated,, therefore can drive lock-screw 2 and rise or descend because lock-screw 2 external screw threads are connected with main body 1 internal thread and lock-screw 2 is circumferentially located.And jaw 3 can draw under the guiding of the jaw rail portion 6 of integral type guidance seat 4 and end shield 8 or open.When head platform root sinks in the installing hole and the charging crane of loading and unloading jaw 3 when being exposed at sinking step outside, jaw 3 integral body are positioned at drill chuck (integral type guidance seat 4 and end shield 8).All the other structures of present embodiment all with embodiment 1 roughly the same, do not give unnecessary details.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used main body 1 morely, lock-screw 2, jaw 3, integral type guidance seat 4, monoblock type is held the portion of leading 5, jaw rail portion 6, guide groove 7, end shield 8, the annular shaft shoulder 9, first radial plain bearing 10, first thrust bearing 11, first trunnion 12, first inner headed face 13, first planar annular 14, second planar annular 15, composite bearing 16, second radial plain bearing 17, second thrust bearing 18, ball 19, axle bed 20, second trunnion 21, second inner headed face 22, the 3rd planar annular 23, ring-type arcuate groove 24, elastic cover 25, first oil storage tank 26, second oil storage tank 27, the 3rd oil storage tank 28, ring-shaped step 29 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (10)
1. two main supporting type keyless drill chuck, comprise cylindrical main body (1), in main body (1) lower end by the lock-screw that has been threaded (2), be equipped with axial with respect to lock-screw (2) in lock-screw (2) lower end, circumferentially locate and radially movably some jaws (3), it is characterized in that, described main body (1) is located in the tubular integral type guidance seat (4), the top of this integral type guidance seat (4) is that cylindrical circular monoblock type is held the portion of leading (5), the bottom is the jaw rail portion (6) that is taper barrel, and have some guide grooves (7) in jaw rail portion (6), described monoblock type holds the portion of leading (5) and jaw rail portion (6) is connected as a single entity structure, described jaw (3) is arranged in the guide groove (7) with corresponding one by one setting of guide groove (7) and jaw (3), be provided with between described main body (1) and the integral type guidance seat (4) and be axle bed cylindraceous (20), described integral type guidance seat (4) lower end also fixed cover is connected to the end shield (8) that is positioned at jaw (3) periphery and is taper barrel, be provided with between described main body (1) and the integral type guidance seat (4) can be respectively to main body (1) axially, radially, the first main supporting structure and the second main supporting structure of angle location, the described first main supporting structure and the second main supporting structure are along main body (1) axial distribution.
2. two main supporting type keyless drill chuck according to claim 1, it is characterized in that, the monoblock type of described integral type guidance seat (4) is held and is provided with ring-shaped step (29) in the portion of leading (5), the periphery of described main body (1) is provided with the annular shaft shoulder (9), and the described annular shaft shoulder (9) is arranged on the ring-shaped step (29).
3. two main supporting type keyless drill chuck according to claim 2, it is characterized in that, the described first main supporting structure comprises main body (1) bottom, be positioned at main body (1) bottom radially and first radial plain bearing (10) between the integral type guidance seat (4) and be arranged on the annular shaft shoulder (9) and ring-shaped step (29) between first thrust bearing (11), described first radial plain bearing (10) is positioned at the annular shaft shoulder (9) below.
4. two main supporting type keyless drill chuck according to claim 3 is characterized in that described first radial plain bearing (10) holds ring-shaped step (29) sidepiece of the portion of leading (5) for monoblock type; Be arranged on main body (1) bottom periphery and be positioned at first trunnion (12) of the annular shaft shoulder (9) below and be arranged on the corresponding setting of first inner headed face (13) of ring-shaped step (29) sidepiece, and described first trunnion (12) is supported on first inner headed face (13)
5. two main supporting type keyless drill chuck according to claim 3, it is characterized in that, described first thrust bearing (11) is a thrust slide bearing, comprises the annular shaft shoulder (9) bottom of main body (1) and ring-shaped step (29) top that monoblock type is held the portion of leading (5); Be arranged on first planar annular (14) of the annular shaft shoulder (9) bottom and be arranged on corresponding setting of second planar annular (15) on ring-shaped step (29) top, and described first planar annular (14) is supported on second planar annular (15).
6. two main supporting type keyless drill chuck according to claim 2, it is characterized in that, the described second main supporting structure comprises main body (1) top and composite bearing (16), described composite bearing (16) sidepiece and main body (1) top form second radial plain bearing (17) between radially, form second thrust bearing (18) between described composite bearing (16) bottom and the annular shaft shoulder (9) top, and described second radial plain bearing (17) is positioned at the annular shaft shoulder (9) top.
7. two main supporting type keyless drill chuck according to claim 6, it is characterized in that, described composite bearing (16) comprises that plurality of balls (19), monoblock type hold the portion of leading (5) top, the annular shaft shoulder (9) top and be arranged on main body (1) top and monoblock type is held between the portion of leading (5) top and tubular axle bed (20), and described plurality of balls (19) is arranged between axle bed (20) and the annular shaft shoulder (9) top.
8. two main supporting type keyless drill chuck according to claim 7 is characterized in that, described second radial plain bearing (17) comprises that axle bed (20) sidepiece and monoblock type hold the portion of leading (5) top; Be arranged on main body (1) top periphery and be positioned at second trunnion (21) and the corresponding setting of second inner headed face (22) that is arranged on axle bed (20) inboard of the annular shaft shoulder (9) top, and described second trunnion (21) is supported on second inner headed face (22), holds the portion of leading (5) top by forced structure of positioning step and monoblock type outside the described axle bed (20) and fixedlys connected.
9. two main supporting type keyless drill chuck according to claim 7, it is characterized in that, described second thrust bearing (18) is a thrust bearing, comprises that monoblock type holds the portion of leading (5) top, axle bed (20) bottom, plurality of balls (19) and the annular shaft shoulder (9) top; The ring-type arcuate groove (24) that is arranged on the 3rd planar annular (23) on the annular shaft shoulder (9) top and is arranged on axle bed (20) bottom is provided with in opposite directions, described plurality of balls (19) all is arranged between the 3rd planar annular (23) and the ring-type arcuate groove (24) and ball (19) contacts with ring-type arcuate groove (24) with the 3rd planar annular (23) respectively, and described the 3rd planar annular (23) is supported on the ring-type arcuate groove (24) by ball (19).
10. according to any described two main supporting type keyless drill chucks among the claim 1-9, it is characterized in that, pass integral type guidance seat (4) and axle bed (20) on the described main body (1) and be with elastic cover (25) thereon, described main body (1) is circumferentially fixedlyed connected with elastic cover (25).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136181.6A CN103212739B (en) | 2013-04-18 | 2013-04-18 | Double main supporting type self-fastening drill chunk |
| PCT/CN2014/075750 WO2014169853A1 (en) | 2013-04-18 | 2014-04-18 | Double-main supporting type self-tightening drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136181.6A CN103212739B (en) | 2013-04-18 | 2013-04-18 | Double main supporting type self-fastening drill chunk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212739A true CN103212739A (en) | 2013-07-24 |
| CN103212739B CN103212739B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310136181.6A Active CN103212739B (en) | 2013-04-18 | 2013-04-18 | Double main supporting type self-fastening drill chunk |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103212739B (en) |
| WO (1) | WO2014169853A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169854A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Composite bearing for self-tightening drill chuck |
| WO2014169853A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Double-main supporting type self-tightening drill chuck |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102437578B1 (en) | 2015-11-11 | 2022-08-26 | 삼성전자주식회사 | Transparent electrodes and electronic devices including the same |
| KR102522012B1 (en) | 2015-12-23 | 2023-04-13 | 삼성전자주식회사 | Conductive element and electronic devices comprising the same |
| KR102543984B1 (en) | 2016-03-15 | 2023-06-14 | 삼성전자주식회사 | Conductors, making method of the same, and electronic devices including the same |
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| CN2086642U (en) * | 1991-01-24 | 1991-10-16 | 黄岩市模具机械厂 | Self-fastening drilling attachment |
| CN2787339Y (en) * | 2005-04-29 | 2006-06-14 | 浙江三鸥机械股份有限公司 | Self-fastening drill chuck |
| CN203265722U (en) * | 2013-04-18 | 2013-11-06 | 玉环胜友工具有限公司 | Composite bearing for self-tightening drill chuck |
| CN103212739B (en) * | 2013-04-18 | 2016-12-28 | 玉环胜友工具有限公司 | Double main supporting type self-fastening drill chunk |
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- 2013-04-18 CN CN201310136181.6A patent/CN103212739B/en active Active
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2014
- 2014-04-18 WO PCT/CN2014/075750 patent/WO2014169853A1/en active Application Filing
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| US4230327A (en) * | 1978-04-07 | 1980-10-28 | Roehm Guenter H | Drill chuck |
| CN2093707U (en) * | 1991-05-31 | 1992-01-22 | 游友民 | Rolling type self-gripping drill chuck |
| BG751Y1 (en) * | 2002-12-27 | 2005-06-30 | "Arkus" Ad {}Lj A{Daaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa | Chuck for a boring-cutting tool |
| CN2671725Y (en) * | 2004-01-07 | 2005-01-19 | 华中科技大学 | Drill holder |
| CN1562541A (en) * | 2004-03-19 | 2005-01-12 | 游友民 | Self-tightening type drill chuck in modified structure |
| CN2832375Y (en) * | 2005-09-27 | 2006-11-01 | 浙江三鸥机械股份有限公司 | Locking self-screwed drill chuck |
| CN102513555A (en) * | 2011-12-29 | 2012-06-27 | 重庆机床(集团)有限责任公司 | High-speed and high-rigidity main shaft system rotary support structure |
| CN203265718U (en) * | 2013-04-18 | 2013-11-06 | 玉环胜友工具有限公司 | Double main bearing type self-tightening drill chuck |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169854A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Composite bearing for self-tightening drill chuck |
| WO2014169853A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Double-main supporting type self-tightening drill chuck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103212739B (en) | 2016-12-28 |
| WO2014169853A1 (en) | 2014-10-23 |
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