CN103212739B - Double main supporting type self-fastening drill chunk - Google Patents
Double main supporting type self-fastening drill chunk Download PDFInfo
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- CN103212739B CN103212739B CN201310136181.6A CN201310136181A CN103212739B CN 103212739 B CN103212739 B CN 103212739B CN 201310136181 A CN201310136181 A CN 201310136181A CN 103212739 B CN103212739 B CN 103212739B
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- main body
- bearing
- annular
- shaft shoulder
- jaw
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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
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Drilling And Boring (AREA)
Abstract
The invention belongs to field of mechanical technique, relate to a kind of double main supporting type self-fastening drill chunk.It solve prior art and design the technical problems such as not reasonable.Including cylindrical main body, main body lower end has been threaded connection lock-screw, lock-screw lower end is equipped with some jaws, main body is located in tubular integrated guide bearing, this integrated guide bearing top is that cylindrical circular monoblock type holds the portion of leading, bottom is the jaw rail portion in taper barrel, some guide grooves are had in jaw rail portion, jaw arranges with guide groove one_to_one corresponding and jaw is arranged in guide groove, integrated guide bearing lower end also fixed cover is connected to be positioned at jaw periphery and the end shield in taper barrel, the first main supporting structure along main body axial distribution and the second main supporting structure it is provided with between main body and integrated guide bearing.Having an advantage in that: reasonable in design, simple in construction, support effects is good, effectively promotes drill chuck job stability, improves operating accuracy.
Description
Technical field
The invention belongs to field of mechanical technique, relate to keyless drill chuck, especially relate to one
Plant double main supporting type self-fastening drill chunk.
Background technology
Along with the development of social productive forces, the use of drill chuck widely, at machine
Make, electronic apparatus, construction and installation, the bench drill used in the industry such as house decoration, hands
Electric drill or lathe etc. mechanically, all can need to clamp the work such as drill bit or cutter with drill chuck
Tool is operated.Existing drill chuck generally has two types: one is that Wrench-type bores
Chuck, the clamping force of this drill chuck depends on the moment that spanner applies, and in clamping and
Need aid during loose unloading drill bit, use aid to tighten or unclamp drill chuck and pacify
Fill or dismantle drill bit or cutter, operating cumbersome, waste time and energy；Another kind is self-tightening
Formula drill chuck.The self-tightening drill chuck principle by self-tightening, turning after utilizing drill bit to install
Dynamic, tighten drill bit or cutter automatically by screw thread, when the instrument such as drill bit or cutter of clamping
It is easy to.
Conventional keyless drill chuck generally includes main body, lock-screw, jaw, ball, end
Cover, jaw seat, end cap and ball lid.Also having a kind of product structure is by ball Gai Yifen
Being two, one is ball lid, and one is end shield cylinder, i.e. has between main body and end shield cylinder
One plug-in unit, and an end cap is sealed up above, to prevent ball from running out of, this plug-in unit
It it is i.e. ball lid.Ball lid (non-plug-in unit is that) inner chamber has a ring-shaped step, and main body is
One cylinder, periphery has an annular shaft shoulder, in the annular shaft shoulder and the rolling of main body
Being dispersed with a circle ball between the ring-shaped step of Zhu Gai, main body is loaded on by ball lid and jaw
In the pilot sleeve that seat is stitched together, this pilot sleeve is the spiral shell by end shield Yu ball lid
Stricture of vagina connection is stitched together.It is connected axle head in main body with external equipment and has an end cap, main
Play rotation main body and prevent ball lid from departing from subjective role.The head of jaw seat has three
Bar guide groove, is respectively arranged with jaw in guide groove, the center of main body is a through hole, a locking
Screw is arranged in this through hole, and lock-screw is connected with main body by screw thread, each folder
The inner end shield of pawl is connected to the head of lock-screw.
Obviously, regardless of the drill chuck of type, its positioning precision is to determine drill chuck product
The major criterion of matter.The advantage of conventional keyless drill chuck is: Parts manufacturing technology requires phase
To relatively low, manufacturing cost is light, and the axiality coupling between part requires relatively low, drill point
Head general assembly is convenient.But in terms of the globality of drill chuck, there is obvious defect, whole zero
Part all relies on the thread connection situation of end shield and ball lid, loses end shield, and drill chuck is just
Fall apart into single-piece one by one.And, it is allowed to main body and other parts are combined with bigger freedom
The advantage of degree also becomes a big defect of above-mentioned drill chuck, when reality is applied, it is difficult to really
Protect drill chuck job stability.In prior art, drill chuck lack make radial and axial fixed
The supporting structure of position, when reality is applied, it is difficult to guarantee job stability, precision is relatively low.
Although the drill chuck of certain structures has seemed supporting structure, but is the most all not carried out
Real supporting, even if there is supporting structure, but owing to design is not reasonable, also difficult
To give full play to its supporting role.
Summary of the invention
It is an object of the invention to for the problems referred to above, it is provided that a kind of good operating stability, essence
Spend high double main supporting type self-fastening drill chunk.
For reaching above-mentioned purpose, present invention employs following technical proposal: this pair is mainly propped up
Hold formula keyless drill chuck, including cylindrical main body, in main body lower end by screw thread even
It is connected to lock-screw, in lock-screw lower end equipped with axial relative to lock-screw, circumferential
Location and radially movable some jaws, it is characterised in that described main body be located in
In the integrated guide bearing of tubular, the top of this integrated guide bearing is cylindrical circular whole
Body formula holds the portion of leading, and bottom is the jaw rail portion in taper barrel, and in jaw rail portion
Have some guide grooves, formula that described monoblock type holds the portion of leading and jaw rail portion is connected as a single entity
Structure, described jaw arranges with guide groove one_to_one corresponding and jaw is arranged in guide groove, institute
It is provided with axle bed cylindrically, described one between main body and the integrated guide bearing stated
Formula guidance seat lower end also fixed cover is connected to be positioned at jaw periphery and the end shield in taper barrel,
Be provided with between described main body and integrated guide bearing can to respectively main body axial, radially,
First main supporting structure of angular location and the second main supporting structure, described first
Main supporting structure and the second main supporting structure are along main body axial distribution.In the present invention,
Axle bed is fixed positioned on integrated guide bearing positioning step and axle bed upper end by location division
Face is substantially flush with integrated guide bearing upper end.In the present invention, integrated guide bearing
The fixedly sleeved end shield of positioning step is passed through in lower end.In the present invention, jaw and the quantity of guide groove
It is three, and is uniformly distributed the most in a circumferential direction.In the present invention, jaw can be with
Main body and the work of lock-screw and move up and down, be achieved in clamping or unclamp drill bit
Function Deng instrument.
Supporting is divided into mainly supporting and aiding support, main supporting to be a kind of restraint of liberty
The supporting of degree effect, for realizing the radial and axial location of main shaft；Aiding support does not rises
Positioning action.Supporting structure is generally made up of two essential parts, i.e. movement parts is led with holding
Part.Main body is the portion of drill chuck contact external device drives axle and the instrument such as drill bit or cutter
Part, therefore its function is equivalent to the extension of drive shaft, and once main body operationally occurs
Move radially, disturbance or axial float, drill chuck operating accuracy will be had a strong impact on.To this end,
Need well main body to be supported.This double main supporting type self-fastening drill chunk uses double
Supporting technology, two supportings are all main supportings, and main body is drill chuck main shaft, by one
Body formula guidance seat forms a main spindle box body, arranges two main supportings in main spindle box body,
It is consequently formed a stable axis system, it is achieved axial, radially, angularly to main body
Location, is effectively improved body of work stability, ensures drill chuck operating accuracy.This
In invention, integrated guide bearing can be divided into two parts according to function, and one is jaw guide rail
Portion, i.e. integrated guide bearing head；One is that monoblock type holds the portion of leading, i.e. with integral type guidance
The part that seat head is connected as a single entity.
In above-mentioned double main supporting type self-fastening drill chunk, described integrated guide bearing
Monoblock type hold the portion of leading in be provided with ring-shaped step, the periphery of described main body is provided with ring
Oblique crank Z is takeed on, and the described annular shaft shoulder is arranged on ring-shaped step.
In above-mentioned double main supporting type self-fastening drill chunk, described first mainly supports
Structure include lower body part, lower body part radially and between integrated guide bearing the
One radial plain bearing and be arranged on first pushing away between the annular shaft shoulder and ring-shaped step
Power bearing, the first described radial plain bearing is positioned at below the annular shaft shoulder.In the present invention,
First radial plain bearing provides radial support for lower body part, and the first thrust bearing is main
Body provides axial supporting axially upwards.
In above-mentioned double main supporting type self-fastening drill chunk, the first described centripetal slip
Bearing is the ring-shaped step sidepiece that monoblock type holds the portion of leading；Be arranged on lower body part periphery and
It is positioned at the first trunnion below the annular shaft shoulder and is arranged on the first of ring-shaped step sidepiece
Disc is correspondingly arranged, and the first described trunnion is supported on the first inner headed face.
In above-mentioned double main supporting type self-fastening drill chunk, the first described thrust bearing
For thrust slide bearing, hold the ring in the portion of leading including the annular shaft shoulder bottom of main body and monoblock type
Shape step top；It is arranged on the first annular plane of annular shaft shoulder bottom and is arranged on annular
Second planar annular on step top is correspondingly arranged, and described first annular flat bearing
On the second planar annular.
In above-mentioned double main supporting type self-fastening drill chunk, described second mainly supports
Structure includes body top and composite bearing, described composite bearing sidepiece and body top
The second radial plain bearing, described composite bearing bottom and annular shaft is formed between Jing Xiang
Shoulder forms the second thrust bearing between top, and the second described radial plain bearing is positioned at
Above the annular shaft shoulder.In the present invention, the second radial plain bearing provides footpath for body top
To supporting, the second thrust bearing provides axial supporting axially downwardly for main body.
In above-mentioned double main supporting type self-fastening drill chunk, described composite bearing includes
Some balls, monoblock type are held and are led top, portion, annular shaft shoulder top and be arranged on body top
And monoblock type is held and led between top, portion and tubular axle bed, described some balls are arranged
Between axle bed and annular shaft shoulder top.
In above-mentioned double main supporting type self-fastening drill chunk, the second described centripetal slip
Bearing includes that axle bed sidepiece and monoblock type are held and leads top, portion；It is arranged on body top periphery
And it is positioned at the second trunnion above the annular shaft shoulder and the second inner circle being arranged on inside axle bed
Face is correspondingly arranged, and the second described trunnion is supported on the second inner headed face, described
Held by the forced structure of positioning step and monoblock type outside axle bed and lead the fixing company in top, portion
Connect.
In above-mentioned double main supporting type self-fastening drill chunk, the second described thrust bearing
For thrust bearing, hold including monoblock type and lead top, portion, axle bed bottom, some balls
With annular shaft shoulder top；It is arranged on the 3rd planar annular on annular shaft shoulder top and is arranged on
The annular cambered raceway of axle bed bottom is oppositely arranged, and described some balls are arranged at
Between three planar annulars and annular cambered raceway and ball respectively with the 3rd planar annular and ring
Shape arcuate groove contacts, and the 3rd described planar annular passes through ball bearing in annular cambered
On raceway.
In the present invention, it is the first radial plain bearing, second centripetal that monoblock type holds the portion of leading
Sliding bearing, the first thrust bearing, the component part of the second thrust bearing, be again four
The bearing block of bearing.
In above-mentioned double main supporting type self-fastening drill chunk, described main body upper end passes
Integrated guide bearing and axle bed and be cased with elastic cover thereon, described main body and elastic cover
Circumferentially fixed connection.
Compared with prior art, the advantage of this double main supporting type self-fastening drill chunk is:
Reasonable in design, simple in construction, support effects is good, effectively promotes drill chuck job stability,
Improve operating accuracy.First thrust bearing and the second thrust bearing lay respectively at the annular shaft shoulder
Above and below, it is achieved that stable position that main body is axial and supporting；First centripetal cunning
It is axial that dynamic bearing and the second radial plain bearing are distributed in main body, it is achieved that main body is the most steady
Location and supporting；First thrust bearing and the first radial plain bearing cooperate composition
One bearing group, it is achieved that the stable position of lower body part and supporting；Second thrust bearing and
Second radial plain bearing cooperates composition one bearing group, it is achieved that body top steady
Location and supporting；Two groups of bearings interact, it is achieved that the monolithic stability location of main body
And supporting.Furtherly, the first thrust bearing, the second thrust bearing, the first centripetal cunning
Dynamic bearing and the second radial plain bearing interact, and complete axial, footpath to main body
To, angular comprehensive supporting.On the other hand, the overall structure of integrated guide bearing again will
The double main supporting structure of this double main supporting type self-fastening drill chunk is tight with jaw rail portion
Link together, make the work being made up of jaw, lock-screw, jaw rail portion, end shield
Become the organic composition of drill chuck axis system as functional areas, become main body as drill chuck
Main shaft is in effective extension of the other end, it is achieved that the stable co-ordination of whole drill chuck.
Accompanying drawing explanation
Fig. 1 be the present invention provide partly cut open structural representation.
In figure, main body 1, lock-screw 2, jaw 3, integrated guide bearing 4, entirety
Formula holds the portion of leading 5, jaw rail portion 6, guide groove 7, end shield 8, the annular shaft shoulder 9, first
Radial plain bearing the 10, first thrust bearing the 11, first trunnion the 12, first inner circle
Face 13, first annular plane the 14, second planar annular 15, composite bearing 16, second
Radial plain bearing the 17, second thrust bearing 18, ball 19, axle bed 20, second are main
Axle journal the 21, second inner headed face the 22, the 3rd planar annular 23, annular cambered raceway 24,
Elastic cover the 25, first oil storage tank the 26, second oil storage tank the 27, the 3rd oil storage tank 28, ring
Shape step 29.
Detailed description of the invention
Embodiment 1:
As it is shown in figure 1, this double main supporting type self-fastening drill chunk includes main body 1, locking
Screw 2, jaw 3, integrated guide bearing 4, end shield 8, axle bed 20, ball 19, pine
Tight set 25 parts such as grade.Main body 1 is cylindrical, is threaded connection in main body 1 lower end
Have lock-screw 2, in lock-screw 2 lower end equipped with relative to lock-screw 2 axially,
Circumferentially positioned and radially movable three jaws 3.Main body 1 is located at tubular one
In formula guidance seat 4, the top of this integrated guide bearing 4 is that cylindrical circular monoblock type is held
Leading portion 5, bottom is the jaw rail portion 6 in taper barrel.I.e. integrated guide bearing 4
Can be divided into two parts according to function, one is jaw rail portion 6, i.e. integrated guide bearing 4
Bottom；One is that monoblock type holds the portion of leading 5, i.e. integrated guide bearing 4 top；And jaw leads
Rail portion 6 and monoblock type are held the portion of leading 5 and are connected as a single entity.Some are had in jaw rail portion 6
Guide groove 7, monoblock type holds the portion of leading 5 and jaw rail portion 6 is integral type structure.Jaw 3
Arrange with guide groove 7 one_to_one corresponding and jaw 3 is arranged in guide groove 7.Main body 1 and one
Axle bed 20 cylindrically it is provided with between formula guidance seat 4.Integrated guide bearing 4 lower end is also
Fixed cover is connected to be positioned at jaw 3 periphery and the end shield 8 in taper barrel.In the present invention,
Axle bed 20 is fixed positioned on integrated guide bearing 4 positioning step and axle bed by location division
20 upper surfaces are substantially flush with integrated guide bearing 4 upper end.In the present invention, integrally
The fixedly sleeved end shield of positioning step 8 is passed through in formula guidance seat 4 lower end.In the present invention, jaw 3
It is three with the quantity of guide groove 7, and is uniformly distributed the most in a circumferential direction.This
In bright, jaw 3 can move up and down along with main body 1 and the work of lock-screw 2, by
This realizes clamping or unclamps the function of the instruments such as drill bit.
Be provided with between main body 1 and integrated guide bearing 4 can respectively to main body 1 axial,
The the first main supporting structure radially, angularly positioned and the second main supporting structure, first
Main supporting structure and the second main supporting structure are along main body 1 axial distribution.In main body 1
End passes integrated guide bearing 4 and axle bed 20 and is cased with elastic cover 25 thereon, main body 1
Circumferentially fixed with elastic cover 25 it is connected.The monoblock type of integrated guide bearing 4 holds the portion of leading 5
Inside being provided with ring-shaped step 29, the periphery of main body 1 is provided with the annular shaft shoulder 9, annular shaft
Shoulder 9 is arranged on ring-shaped step 29.
In the present invention, the first main supporting structure includes main body 1 bottom, is positioned at main body 1
The first radial plain bearing 10 between bottom radial direction and integrated guide bearing 4, Yi Jishe
Put annular the shaft shoulder 9 and ring-shaped step 29 between the first thrust bearing 11, first to
Heart sliding bearing 10 is positioned at below the annular shaft shoulder 9.First radial plain bearing 10 is whole
Body formula holds ring-shaped step 29 sidepiece in the portion of leading 5；It is arranged on main body 1 bottom periphery and position
In annular the shaft shoulder 9 below the first trunnion 12 be arranged on ring-shaped step 29 sidepiece
In first inner headed face 13 is correspondingly arranged, and the first described trunnion 12 is supported on first
On disc 13.First thrust bearing 11 is thrust slide bearing, including the ring of main body 1
Oblique crank Z takes on 9 bottoms and monoblock type holds ring-shaped step 29 top in the portion of leading 5；It is arranged on annular
The first annular plane 14 of the shaft shoulder 9 bottom and be arranged on the second of ring-shaped step 29 top
Planar annular 15 is correspondingly arranged, and described first annular plane 14 is supported on the second ring
In shape plane 15.In the present invention, the first radial plain bearing 10 carries for main body 1 bottom
For radial support, the first thrust bearing 11 provides axial supporting axially upwards for main body 1.
In the present invention, the second main supporting structure includes main body 1 top and composite bearing 16,
The second centripetal slip is formed between described composite bearing 16 sidepiece and main body 1 top radial direction
Bearing 17, forms the between described composite bearing 16 bottom and the annular shaft shoulder 9 top
Two thrust bearings 18, and the second described radial plain bearing 17 be positioned at annular the shaft shoulder 9
Top.Composite bearing 16 includes that some balls 19, monoblock type hold top, the portion of leading 5, ring
Oblique crank Z take on 9 tops and be arranged on main body 1 top and monoblock type is held between top, the portion of leading 5 and
Tubular axle bed 20, described some balls 19 are arranged on axle bed 20 and the annular shaft shoulder
Between 9 tops.Second radial plain bearing 17 includes that axle bed 20 sidepiece and monoblock type are held
Lead top, portion 5；It is arranged on main body 1 top periphery and is positioned at above the annular shaft shoulder 9
Second trunnion 21 is correspondingly arranged with the second inner headed face 22 being arranged on inside axle bed 20,
And the second described trunnion 21 is supported on the second inner headed face 22, described axle bed 20
Outside is held top, the portion of leading 5 by the forced structure of positioning step and is fixed and be connected with monoblock type.
Second thrust bearing 18 is thrust bearing, holds top, the portion of leading 5, axle including monoblock type
Seat 20 bottoms, some balls 19 and the annular shaft shoulder 9 top；It is arranged on the annular shaft shoulder 9
3rd planar annular 23 and the annular cambered raceway 24 being arranged on axle bed 20 bottom on top
Being oppositely arranged, described some balls 19 are arranged at the 3rd planar annular 23 and ring-type
Between arcuate groove 24 and ball 19 respectively with the 3rd planar annular 23 and annular cambered rolling
Road 24 contacts, and the 3rd described planar annular 23 is supported on annular cambered by ball 19
On raceway 24.In the present invention, the second radial plain bearing 17 provides for main body 1 top
Radial support, the second thrust bearing 18 provides axial supporting axially downwardly for main body 1.
In the present invention, it is the first radial plain bearing 10, second that monoblock type holds the portion of leading 5
The important set of radial plain bearing the 17, first thrust bearing the 11, second thrust bearing 18
Part, is again the bearing block of these four bearings.
This double main supporting type self-fastening drill chunk operationally, can be formed on ball 19 surface
One layer of carrying oil film；One layer is formed between the first trunnion 12 and the first inner headed face 13
Carrying oil film；One layer is formed between first annular plane 14 and the second planar annular 15
Carrying oil film；One layer of carrying is formed between the second trunnion 21 and the second inner headed face 22
Oil film.
Supporting is divided into mainly supporting and aiding support, main supporting to be a kind of restraint of liberty
The supporting of degree effect, for realizing the radial and axial location of main shaft；Aiding support does not rises
Positioning action.Supporting structure is generally made up of two essential parts, i.e. movement parts is led with holding
Part.Main body 1 is drill chuck contact external device drives axle and the instrument such as drill bit or cutter
Parts, therefore its function is equivalent to the extension of drive shaft, and once main body 1 is operationally
Occur moving radially, disturbance or axial float, drill chuck operating accuracy will be had a strong impact on.
For this reason, it may be necessary to well main body 1 is supported.This pair of main supporting type self-tightening drill point
Head uses double base technology, and two supportings are all main supportings, and main body 1 is drill chuck master
Axle, forms a main spindle box body by integrated guide bearing 4, arranges in main spindle box body
Two main supportings, are consequently formed a stable axis system, it is achieved to main body 1
Axially, radially, angularly position, it is effectively improved main body 1 job stability, ensures
Drill chuck operating accuracy.In the present invention, integrated guide bearing 4 can be divided into according to function
Two parts, one is jaw rail portion 6, i.e. integrated guide bearing 4 head；One is overall
Formula holds the portion of leading 5, the part being i.e. connected as a single entity with integrated guide bearing 4 head.
In the present invention, the first thrust bearing 11 and the second thrust bearing 18 lay respectively at annular
The above and below of the shaft shoulder 9, it is achieved that stable position that main body 1 is axial and supporting；The
One radial plain bearing 10 and the second radial plain bearing 17 are distributed in main body 1 axially,
Achieve main body 1 radially stable position and supporting；First thrust bearing 11 and first is centripetal
Sliding bearing 10 cooperates and constitutes a bearing group, it is achieved that the stable of main body 1 bottom is determined
Position and supporting；Second thrust bearing 18 and the second centripetal sliding axle 17 hold the structure that cooperates
Become a bearing group, it is achieved that the stable position on main body 1 top and supporting；Two groups of bearing phases
Interaction, it is achieved that the monolithic stability location of main body 1 and supporting.Furtherly, first
Thrust bearing the 11, second thrust bearing the 18, first radial plain bearing 10 and second to
Heart sliding bearing 17 interacts, complete to main body 1 axial, radially, angular
Supporting comprehensively.On the other hand, the overall structure of integrated guide bearing 4 is main by this pair again
The double main supporting structure of supporting type keyless drill chuck is closely connected with jaw rail portion 6
Together, the work being made up of jaw 3, lock-screw 2, jaw rail portion 6, end shield 8 is made
Become the organic composition of drill chuck axis system as functional areas, become main body 1 as drill point
Head main shaft is in effective extension of the other end, it is achieved that the stable co-ordination of whole drill chuck.
Embodiment 2:
In the present embodiment, due to when drill chuck works, can be at the first trunnion 12 and the
One layer of carrying oil film is formed between one inner headed face 13；In first annular plane 14 and second
One layer of carrying oil film is formed between planar annular 15；In the second trunnion 21 and second
One layer of carrying oil film is formed between disc 22；At the 3rd planar annular 23 and annular cambered
One layer of carrying oil film is formed between raceway 24 and on ball 19.Therefore to be easily carried
Oil film is formed, lubricates, simultaneously facilitates storage dirt, and this enforcement have employed following proposal:
The first trunnion 12 and the first annular plane 14 of the annular shaft shoulder 9 in main body 1
Between the first oil storage tank 26 is set, the first oil storage tank 26 here is positioned in main body 1,
In addition to fluid is provided, it is also possible to the dirt produced in storage drill chuck work process, and
And dirt enter the first oil storage tank 26 after can promote fuel feeding.At ring-shaped step 29
Second oil storage tank 27 is set between the inwall of second ring plane 15 and integrated guide bearing 4,
Here the second oil storage tank 27 is positioned in integrated guide bearing 4, can be disposed entirely within one
On second planar annular 15 of body formula guidance seat 4, it is also possible to be arranged on integrated guide bearing
Between inwall and second planar annular 15 of 4, it is also possible to be disposed entirely within integral type guidance
On the inwall of seat 4, in addition to fluid is provided, it is also possible in storage drill chuck work process
Produce dirt, and dirt enter the second oil storage tank 27 after can promote fuel feeding.Leading
Arrange between second trunnion 12 and the 3rd planar annular 23 of the annular shaft shoulder 9 of body 1
3rd oil storage tank 28, the 3rd oil storage tank 28 here is positioned in main body 1, except providing
Outside fluid, it is also possible to the dirt produced in storage drill chuck work process, and dirt enters
Fuel feeding can be promoted after entering the 3rd oil storage tank 28.
Additionally, in the present embodiment, lock-screw 2 includes being provided with externally threaded cylinder and setting
In cylinder lower end and external diameter more than the head platform of cylinder, head platform is provided with for
Load the charging crane of jaw 3.Main body 1 center has installing hole, sets in this installing hole
Having sinking step and be positioned at the female thread above sinking step, lock-screw 2 cylinder inserts in
Installing hole is interior and external screw thread is connected with main body 1 female thread, and head platform can partly sink to
In sinking step.The setting of sinking step makes to realize between lock-screw 2 and main body 1
Decanter type connects, and makes structure the compactest firmly, it is to avoid lock-screw 2 disturbance, effectively
Improve precision.When main body 1 rotates, due in lock-screw 2 external screw thread and main body 1
Screw thread is connected and lock-screw 2 is circumferentially positioned, therefore, it is possible to drive on lock-screw 2
Rise or decline.And jaw 3 can be at the jaw rail portion 6 of integrated guide bearing 4 and end
Draw under the guiding of cover 8 or open.In head platform root sinks to installing hole and handling
When the charging crane of jaw 3 is exposed at outside sinking step, jaw 3 is integrally located at drill chuck
In (integrated guide bearing 4 and end shield 8).Remaining structure of the present embodiment all with embodiment 1
Similar, do not repeat.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Although the most more employing main body 1, lock-screw 2, jaw 3, integral type
Guidance seat 4, monoblock type hold the portion of leading 5, jaw rail portion 6, guide groove 7, end shield 8, ring
Oblique crank Z shoulder 9, first radial plain bearing the 10, first thrust bearing the 11, first trunnion
12, the first inner headed face 13, first annular plane the 14, second planar annular 15, compound
Bearing the 16, second radial plain bearing the 17, second thrust bearing 18, ball 19, axle
Seat 20, second trunnion the 21, second inner headed face the 22, the 3rd planar annular 23, ring-type
Arcuate groove 24, elastic cover the 25, first oil storage tank the 26, second oil storage tank the 27, the 3rd
The terms such as oil storage tank 28, ring-shaped step 29, but be not precluded from using other term can
Can property.Use these terms to be only used to more easily to describe and explain the basis of the present invention
Matter；Being construed as any additional restriction is all to disagree with spirit of the present invention
's.
Claims (2)
1. a double main supporting type self-fastening drill chunk, including cylindrical main body (1),
It has been threaded connection lock-screw (2), in lock-screw (2) in main body (1) lower end
Lower end equipped with relative to lock-screw (2) if axial, circumferentially positioned and radially movable
Dry jaw (3), it is characterised in that described main body (1) is located at tubular integral type
In guidance seat (4), the top of this integrated guide bearing (4) is cylindrical circular entirety
Formula holds the portion of leading (5), and bottom is the jaw rail portion (6) in taper barrel, and at jaw
Rail portion (6) has some guide grooves (7), described monoblock type hold the portion of leading (5) and
Jaw rail portion (6) is connected as a single entity structure, described jaw (3) and guide groove (7)
One_to_one corresponding is arranged and jaw (3) is arranged in guide groove (7), described main body (1)
And it is provided with axle bed (20) cylindrically, described one between integrated guide bearing (4)
Body formula guidance seat (4) lower end also fixed cover is connected to be positioned at jaw (3) periphery and in circular cone
The end shield (8) of tubular, sets between described main body (1) and integrated guide bearing (4)
Have can respectively to main body (1) axial, radially, the first of angular location mainly support knot
Structure and the second main supporting structure, the main supporting structure and second of described first mainly props up
Bearing structure is along main body (1) axial distribution；The entirety of described integrated guide bearing (4)
Formula is provided with ring-shaped step (29), the periphery of described main body (1) in holding the portion of leading (5)
Being provided with the annular shaft shoulder (9), the described annular shaft shoulder (9) is arranged on ring-shaped step (29)
On；The main supporting structure of described first includes main body (1) bottom, is positioned at main body (1)
The bottom the first radial plain bearing (10) radially and between integrated guide bearing (4),
And it is arranged on the first thrust bearing between the annular shaft shoulder (9) and ring-shaped step (29)
(11), described the first radial plain bearing (10) is positioned at the annular shaft shoulder (9) lower section；
The main supporting structure of described second includes main body (1) top and composite bearing (16),
Described composite bearing (16) sidepiece and main body (1) top radially between formed second to
Heart sliding bearing (17), described composite bearing (16) bottom and the annular shaft shoulder (9)
The second thrust bearing (18), and the second described radial plain bearing is formed between top
(17) the annular shaft shoulder (9) top it is positioned at；
Described the first radial plain bearing (10) is the annular that monoblock type holds the portion of leading (5)
Step (29) sidepiece；It is arranged on main body (1) bottom periphery and is positioned at the annular shaft shoulder (9)
Lower section the first trunnion (12) and be arranged on ring-shaped step (29) sidepiece first in
In disc (13) is correspondingly arranged, and described the first trunnion (12) is supported on first
On disc (13)；
Described the first thrust bearing (11) is thrust slide bearing, including main body (1)
The annular shaft shoulder (9) bottom and monoblock type hold on the ring-shaped step (29) of the portion of leading (5)
Portion；It is arranged on the first annular plane (14) of the annular shaft shoulder (9) bottom and is arranged on ring
Second planar annular (15) on shape step (29) top is correspondingly arranged, and described
One planar annular (14) is supported on the second planar annular (15)；
Described composite bearing (16) includes that some 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 hold with monoblock type and lead
Between portion (5) top and tubular axle bed (20), described some balls (19)
It is arranged between axle bed (20) and the annular shaft shoulder (9) top；
Described the second radial plain bearing (17) includes axle bed (20) sidepiece and entirety
Formula holds the portion of leading (5) top；It is arranged on main body (1) top periphery and is positioned at annular shaft
Shoulder (9) top the second trunnion (21) be arranged on axle bed (20) inner side second
Inner headed face (22) is correspondingly arranged, and described the second trunnion (21) is supported on second
On inner headed face (22), described axle bed (20) outside is by the forced knot of positioning step
Structure holds with monoblock type that the portion of leading (5) top is fixing to be connected；
Described the second thrust bearing (18) is thrust bearing, holds including monoblock type
Lead portion (5) top, axle bed (20) bottom, some balls (19) and the annular shaft shoulder (9)
Top；It is arranged on the 3rd planar annular (23) on the annular shaft shoulder (9) top and is arranged on
The annular cambered raceway (24) of axle bed (20) bottom is oppositely arranged, if described dry milling
Pearl (19) be arranged at the 3rd planar annular (23) and annular cambered raceway (24) it
Between and ball (19) respectively with the 3rd planar annular (23) and annular cambered raceway (24)
Contact, the 3rd described planar annular (23) is supported on annular arc by ball (19)
On shape raceway (24).
Double main supporting type self-fastening drill chunk the most according to claim 1, its feature
Being, described main body (1) upper end passes integrated guide bearing (4) and axle bed (20)
And it is cased with elastic cover (25), described main body (1) and elastic cover (25) week thereon
To fixing connection.
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 CN103212739A (en) | 2013-07-24 |
| CN103212739B true CN103212739B (en) | 2016-12-28 |
Family
ID=48811074
Family Applications (1)
| 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212736B (en) * | 2013-04-18 | 2016-07-13 | 玉环胜友工具有限公司 | Composite bearing for keyless 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 |
| 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 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1562541A (en) * | 2004-03-19 | 2005-01-12 | 游友民 | Self-tightening type drill chuck in modified structure |
| CN2671725Y (en) * | 2004-01-07 | 2005-01-19 | 华中科技大学 | Drill holder |
| BG751Y1 (en) * | 2002-12-27 | 2005-06-30 | "Arkus" Ad {}Lj A{Daaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa | Chuck for a boring-cutting tool |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
-
2013
- 2013-04-18 CN CN201310136181.6A patent/CN103212739B/en active Active
-
2014
- 2014-04-18 WO PCT/CN2014/075750 patent/WO2014169853A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103212739A (en) | 2013-07-24 |
| WO2014169853A1 (en) | 2014-10-23 |
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