CN208613783U - A kind of chuck - Google Patents
A kind of chuck Download PDFInfo
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- CN208613783U CN208613783U CN201821038076.3U CN201821038076U CN208613783U CN 208613783 U CN208613783 U CN 208613783U CN 201821038076 U CN201821038076 U CN 201821038076U CN 208613783 U CN208613783 U CN 208613783U
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Abstract
The utility model relates to frock clamps, disclose a kind of chuck, and for the problem that chuck is reduced using rear concentricity for a long time, workpiece geometric tolerance increases comprising chuck body, claw driving assembly and multiple movable jaws；Movable jaw is uniformly distributed around a central axis comprising the base jaw connecting with claw driving assembly, the replacement rest shoe and fixing bolt that are mounted in base jaw；Base jaw is provided with slot towards central axis side, and base jaw upper surface is equipped with the port of perforation slot, and slot is interior to be arranged right below bolt hole in port；Replacement rest shoe includes the inserted block in support block and insertion slot；Be provided on inserted block it is vertical and with the matched perforation one of bolt hole；Inserted block enter one end in slot be bonded with the slot bottom of slot inboard, upright abutting when, perforation one is aligned with bolt hole and wears for fixing bolt, thus it is small pressure conduction deviation to be compressed between base jaw and replacement rest shoe, it is close to replace the frayed degree of rest shoe, the reduction of chuck concentricity is reduced, Workpiece Machining Accuracy is improved.
Description
Technical field
The utility model relates to frock clamp, in particular to a kind of chuck.
Background technique
Chuck is the mechanical device for being used to clamp workpiece on lathe.Utilize the radial direction for the movable jaw being evenly arranged on chuck body
It is mobile, the machine tool accessories of Workpiece clamping and positioning.
As shown in Fig. 10, a kind of existing chuck comprising chuck body 1, claw driving assembly 2 and multiple movable jaws
3, three parts composition.Claw driving assembly 2 includes be meshed bevel pinion 22 and bevel gear wheel 21, and bevel gear wheel 21 is backwards to conelet
Gear 22 is provided with the planar rectangular thread groove 213 to match with planar rectangular screw thread 3111 on one side.As shown in Fig. 11, living
Dynamic claw 3 has including base jaw 31 and replacement rest shoe 32, and replacement rest shoe 32 is located at 31 top of base jaw, and is run through by fixing bolt 33
Rest shoe 32 is replaced, and is threadedly coupled with base jaw 31, Shi Genghuan rest shoe 32 and about 31 base jaw abutting are fixed.In conjunction with attached drawing 10
Shown in 11, the bottom surface of base jaw 31 is provided with planar rectangular screw thread 3111.Rotating bevel pinion 22 can be with bevel gear wheel 21, in turn
Planar rectangular thread groove 213 pushes planar rectangular screw thread 3111, synchronizes multiple movable jaws 3 and moves radially.
Disadvantage is that base jaw 31 and replacement about 32 rest shoe abutting are fixed, fixing-stable and it is fixed by force
Degree is influenced by 33 compression degree of fixing bolt, therefore is had differences between multiple movable jaws 3, and gripper chuck clamping of workpieces is in use, more
There is also differences for the pressure that a movable jaw 3 is subject to, then after chuck prolonged use, the abrasion journey of multiple movable jaws 3
The different even generations of degree are mobile backwards to some extent, and then multiple movable jaws 3 can slowly deviate lathe spindle center, chuck
Concentricity reduces, and increases the geometric tolerance of processing part.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of chuck, base jaw and replacement pawl
It is small that pressure conduction deviation is compressed between block, the replacement frayed degree of rest shoe is close, reduces the reduction of chuck concentricity, improves workpiece
Machining accuracy.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of chuck, including chuck body, claw driving assembly and multiple movable jaws, the movable jaw surround in one
Mandrel line is uniformly distributed, and the movable jaw includes the base jaw connecting with claw driving assembly, the replacement pawl being mounted in base jaw
Block and fixing bolt, the base jaw offer horizontal-extending slot, slot notch court towards the side of central axis
To central axis；The base jaw upper surface is provided with the port of perforation slot, the bottom surface of the slot level port just under
Side is provided with bolt hole；The replacement rest shoe includes the inserted block for abutting the support block of workpiece and being inserted into slot；The inserted block
On offer it is vertical and with the matched perforation one of bolt hole；The inserted block enters one end in slot and the slot bottom of slot inboard, upright
When fitting abuts, the perforation one is aligned with bolt hole and wears for fixing bolt.
It by using above-mentioned technical proposal, is abutted against in inserted block insertion slot and with the slot bottom of slot, when chuck clamps work
When part, multiple support blocks compress the surface of workpiece, and the slot bottom of slot inboard, upright compresses support replacement pawl towards central axis at this time
Block makes fixing-stable be not easy to deviate, while replacing the counteractive pressure of workpiece suffered by rest shoe and being directly conducted in base jaw, and existing
It is compared in technology by fixing bolt conduction, small, the then multiple activities that compress pressure conduction deviation between base jaw and replacement rest shoe
The degree of wear suffered by the support block of claw is close, reduces the reduction of chuck concentricity, improves Workpiece Machining Accuracy, extends chuck reparation
Period.
Preferably, the port is vertically arranged and through-hole horizontal cross-section is polygon；It is wearing the inserted block upper surface
It is provided with locating slot on the outside of hole, the notch of the locating slot matches with port；The movable jaw further includes locating piece；It is described
Locating piece is provided centrally with the perforation two passed through for fixing bolt, and the lower end of the locating piece is inserted into locating slot and and locating slot
Agree with, agrees in the upper end insertion port of the locating piece and with port.
By using above-mentioned technical proposal, when chuck clamps work pieces process, multiple movable jaws are subjected to circumferential torsion
Power, especially when carrying out the cutting of workpiece circular, twisting resistance is larger, the trend for making support block that inserted block be driven to deflect；Thus
Fixing bolt is used for fixing bigslip, prevents cutting from extracting from slot, while compressing stationary positioned block；The lower end of locating piece is inserted into
In locating slot, in the upper end insertion port of locating piece, locating piece limits inserted block and horizontal rotation occurs, and then support block is prevented to drive
Inserted block deflection is affixed support block towards the slot bottom vertical with slot of one end in central axis and inserted block insertion slot and abuts,
The deviation of power conduction between replacement fixture block and base jaw is reduced, and then is further reduced the reduction of chuck concentricity, workpiece is improved and adds
Work precision.
Preferably, the horizontal cross-section of the port is regular polygon.
By using above-mentioned technical proposal, the upper end horizontal cross-section of locating piece is regular polygon, locating piece upper side with
Port inner sidewall abut and rotate trend when, interaction force is more uniformly spread between the two, protection locating piece and
Port prevents the two from occurring to scratch or dampen.
Preferably, the locating slot is in prism-frustum-shaped, and the notch area of the locating slot is greater than the slot bottom of locating slot
Area.
By using above-mentioned technical proposal, the locating slot of prism-frustum-shaped plays guiding role to the insertion of locating piece；Work as simultaneously
Fixing bolt screws exit bolt hole after, be pulled outwardly plug block, the cell wall of locating slot can push locating piece, locating piece is forced to eject
Port, and the taking-up with locating piece, replacement replacement rest shoe when chuck then being facilitated to process different workpieces.
Preferably, the locating slot is in positive prism-frustum-shaped, and the side of the close slot slot bottom of the locating slot notch
Side is parallel with slot slot bottom.
By using above-mentioned technical proposal, the one side wall of locating slot tilts upward and its horizontal direction face slot notch,
When thus pulling out inserted block, locating piece is more labor-saving to be easily ejected.
Preferably, the slot is inserted with the limit inserted link of vertical slot length direction；The inserted block bottom surface setting
There is hanging groove, the bottom surface of vertical inserted block length perforation inserted block in the hanging groove horizontal direction；The side of the limit inserted link and extension
When the vertical side wall of slot abuts, the perforation one partially overlaps or is aligned with bolt hole.
By using above-mentioned technical proposal, installation site of the chuck on machining tool is also normal in the horizontal plane in addition to installing
It is mounted on vertical plane, then the inserted block of at least one replacement rest shoe must be inserted upwardly into slot in multiple movable jaws；By
This can temporarily be fixed inserted block and slot by hanging groove being articulated on the side of limit inserted link after inserted block is inserted into slot
It is interior, it is fallen without manpower support inserted block prevented also from inserted block, convenient for the installation of locating piece being filled with fixing bolt.
Preferably, when the side side wall vertical with hanging groove of the limit inserted link abuts, one and the bolt of perforating
Bore portion is overlapped；When the perforation one is aligned with bolt hole, the side of the limit inserted link is not abutted with the upright side walls of hanging groove.
By using above-mentioned technical proposal, when inserted block abuts the slot bottom of slot inboard, upright, limit the side of inserted link not with
The upright side walls of hanging groove abut, the component that power is conducted between replacement rest shoe and base jaw when limit inserted link being avoided to become clamping workpiece.
Preferably, base jaw two sidewalls vertical and parallel in slot offer and wear mouth, a mouthful phase is worn described in two
Alignment；Limit inserted link insertion two is worn in mouth, and the side of the limit inserted link with wear mouth and mutually agree with.
By using above-mentioned technical proposal, inserted link is limited by being inserted into slot outside slot, and the non-integral machine-shaping of base jaw,
Reduce the difficulty of processing and maintenance replacement.
Preferably, the base jaw wears the guide groove being provided on the outside of mouth along wearing mouthful length direction and extending one.
By using above-mentioned technical proposal, convenient for limiting the insertion of inserted link.
Preferably, being provided with embeded slot on the bottom surface of the slot level, the both ends of the embeded slot are respectively communicated with
Two wear mouth, and the embeded slot is located at the side in slot with limit inserted link and is bonded.
By using above-mentioned technical proposal, the fixed limit inserted link of embeded slot, and limit inserted link interspersed slot notch court
When lower, support limit inserted link, reinforce the carry load of limit inserted link.
In conclusion the utility model has the following beneficial effects:
1. when chuck clamping workpiece, multiple support blocks compress the surface of workpiece, at this time the slot bottom direction of slot inboard, upright
Central axis compresses support replacement rest shoe, makes fixing-stable be not easy to deviate, while replacing the counteractive pressure of workpiece suffered by rest shoe
It is directly conducted in base jaw, compared with conducting in the prior art by fixing bolt, compresses pressure between base jaw and replacement rest shoe
Conduction deviation is smaller, and then the degree of wear suffered by the support block of multiple movable jaws is close, reduces the reduction of chuck concentricity, improves
Workpiece Machining Accuracy extends chuck repairing efficiency；
2. chuck clamps work pieces process, multiple movable jaws are subjected to circumferential twisting resistance, are especially carrying out workpiece
When the cutting of annular, twisting resistance is larger, the trend for making support block that inserted block be driven to deflect；Thus fixing bolt is inserted for fixed
Item prevents cutting from extracting from slot, while compressing stationary positioned block；In the lower end insertion locating slot of locating piece, locating piece
Upper end is inserted into port, and locating piece limits inserted block and horizontal rotation occurs, and then support block is prevented to drive inserted block deflection, makes support block court
The one end being inserted into slot to central axis and inserted block slot bottom vertical with slot, which is affixed, to abut, and reduces replacement fixture block and base jaw
Between power conduction deviation, and then be further reduced the reduction of chuck concentricity, improve Workpiece Machining Accuracy；
3. being pulled outwardly plug block after fixing bolt, which screws, exits bolt hole, the cell wall of locating slot can push locating piece, compel
Locating piece is set to eject port, and the taking-up with locating piece, replacement replacement rest shoe when chuck then being facilitated to process different workpieces；
4. installation site of the chuck on machining tool is also often mounted on vertical plane in the horizontal plane in addition to installation, then
The inserted block of at least one replacement rest shoe must be inserted upwardly into slot in multiple movable jaws；Slot is inserted into from there through in inserted block
After interior, hanging groove is articulated on the side of limit inserted link, can be temporarily fixed in slot by inserted block, inserted block is supported without manpower
It can prevent inserted block from falling, convenient for the installation of locating piece being filled with fixing bolt.
Detailed description of the invention
Fig. 1 is the explosive view of chuck；
Fig. 2 is the structural schematic diagram that claw driving assembly embodies its bottom surface structure；
Fig. 3 is the structural schematic diagram that claw driving assembly embodies its surface structure；
Fig. 4 is the explosive view of movable jaw；
Fig. 5 is the structural schematic diagram of movable jaw；
Fig. 6 is the structural schematic diagram that base jaw embodies slot internal structure；
Fig. 7 is the cross-sectional view one that movable jaw embodies structure in slot；
Fig. 8 is the cross-sectional view two that movable jaw embodies structure in slot；
Fig. 9 is the cross-sectional view three that movable jaw embodies structure in slot；
Figure 10 is the explosive view of chuck in the prior art；
Figure 11 is the explosive view of movable jaw in the prior art.
Appended drawing reference: 1, chuck body；11, chassis；111, positioning ring；112, mounting ring；113, bolt is installed；12, upper casing
Body；121, installation cavity；122, jack；123, claw slideway；1231, limiting slot；124, mounting hole；2, claw driving assembly；21,
Bevel gear wheel；211, the first cone tooth；212, bearing surface；213, planar rectangular thread groove；22, bevel pinion；221, end of engagement；
2211, the second cone tooth；222, end is screwed；2221, slot is screwed；3, movable jaw；31, base jaw；311, pedestal；3111, plane square
Shape screw thread；3112, positive stop strip；3113, guide groove；312, mounting portion；3121, slot；3121-1, embeded slot；3121-2, bolt
Hole；3122, port；3123, Chuan Kou；32, rest shoe is replaced；321, support block；322, inserted block；3221, locating slot；3222, perforation one；
3223, hanging groove；33, fixing bolt；331, threaded post；332, head is screwed；34, locating piece；341, limited post；342, inserted terminal；
343, perforation two；35, inserted link is limited；4, central axis.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Fig. 1, a kind of chuck, including chuck body 1, claw driving assembly 2 and multiple movable jaws 3.
Chuck body 1 includes chassis 11 in disk form and columnar upper housing 12.11 upper surface of chassis is provided centrally with fixed
Position ring 111,111 upper surface mounting ring 112 of positioning ring.Mounting ring 112, positioning ring 111 and 311 three of pedestal are coaxial.Chassis
11 are uniformly equipped with several installation bolts 113 around its axle center at the outer outside mounting ring 112, and installation bolt 113 is under
Worn on and, quantity according to the actual situation depending on, herein install 113 quantity of bolt be four.
Central axis 4 is additionally provided in the present embodiment, central axis 4 is preferably to illustrate movable jaw 3 in the present embodiment
Structure and part between relationship and illusory straight line, actually and entity is not present, is 3 clamping workpiece of movable jaw
When the center that moves radially, the axle center of general lathe axle is overlapped, and the axle center in mounting ring 112 is overlapped.
Upper housing 12 is in the form of a column, and bottom surface is open and it is internal with the installation cavity 121 for accommodating claw driving assembly 2.On
The outer of 12 bottom surface of shell and the outer of pedestal 311 are superimposed, and pass through installation 113 fixed underpan 11 of bolt and upper housing 12.
Upper housing 12 is provided centrally with the jack 122 through upper housing 12, and jack 122 and central axis 4 are coaxial.Upper housing
12 upper end is provided with multiple claw slideways 123, the quantity of claw slideway 123 and the quantity phase of movable jaw 3 around jack 122
Deng, can according to the actual situation depending on, herein quantity be three.Claw slideway 123 is horizontally disposed and extends backwards to jack 122, card
The bottom surface of pawl slideway 123 and installation cavity 121 penetrate through, and the two sides of claw slideway 123 are provided with the limit extended along claw sliding slot
Position slot 1231.The side of upper housing 12 also sets up that there are three the mounting hole 124 being uniformly arranged around its axle center, mounting holes simultaneously
124 are connected with installation cavity 121.
Claw driving assembly 2 is set up in mounting ring 112 comprising bevel gear wheel 21 and bevel pinion 22.
As shown in Figure 1 and Figure 2, bevel gear wheel 21 is horizontal positioned, and axle center is vertical and is overlapped with central axis 4.Greatly
Inclined first cone tooth 211 is distributed with around its axle center in the bottom surface outer of bevel gear 21.Tooth is bored first in 21 bottom surface of bevel gear wheel
211 inside is provided with horizontal and annular bearing surface 212, and bearing surface 212 is bonded the anchor ring for being connected to 112 upper end of mounting ring
On.
As shown in Fig. 3, the upper surface of bevel gear wheel 21 is additionally provided with planar rectangular thread groove 213.Planar rectangular screw thread
Slot 213 its in the shape of a spiral, rotation retraction from the outside to the core, and planar rectangular thread groove 213 its any one vertical rotation is tangential
Section is the rectangle of same size.
The quantity of small bevel gear according to the actual situation depending on, can for one or more, herein small bevel gear quantity be three.It is three small
It bores lower section of the tooth position in bevel gear wheel 21 and the axle center around bevel gear wheel 21 is uniformly distributed.Small bevel gear includes towards bevel gear wheel
The end of engagement 221 in 21 axle center and backwards 21 axle center of bevel gear wheel screw end 222.
As shown in Fig. 2, end of engagement 221 is in a circular table shape, is distributed on axle center level and the side of rotary table around its axle center
There is the second cone tooth 2211.Second cone tooth 2211 matches with the first cone tooth 211 to be engaged.Bevel pinion 22 turns by axis of Pivot Point Center
When dynamic, it can be rotated with bevel gear wheel 21.
It screws end 222 to be in the form of a column and coaxial with end of engagement 221, backwards to one end of end of engagement 221 insertion mounting hole 124
It is interior, and then the shaft core position of bevel pinion 22 is fixed.End 222 is screwed simultaneously to open up on the end face of end of engagement 221
Screw slot 2221, screw slot 2221 shape carve according to the actual situation depending on, herein be opening be in rectangle groove.Screw slot
2221 for rotating bevel pinion 22 after tool insertion.
As shown in Fig. 1, the quantity of movable jaw 3 according to the actual situation depending on, quantity be greater than one and surround a center
Axis 4 is uniformly distributed, and the quantity of movable jaw 3 is three herein.
As shown in attached drawing 1 and attached drawing 4, movable jaw 3 includes the base jaw 31 plugged and replacement rest shoe 32.Base jaw 31 is installed
In claw slideway 123 comprising pedestal 311 and the fixed part on 311 upper surface of pedestal.311 parallel length side of pedestal
To the two be additionally provided with positive stop strip 3112, two positive stop strips 3112 are inserted in limiting slot 1231.
As shown in Fig. 5,311 bottom surface of pedestal is provided with planar rectangular screw thread 3111, planar rectangular screw thread 3111 and plane
Rectangular thread slot 213 matches, and planar rectangular screw thread 3111 can be inserted into planar rectangular thread groove 213, and planar rectangular screw thread
3111 side and the cell wall of planar rectangular thread groove 213 are affixed.In conjunction with attached drawing 3 and attached drawing 5, when bevel gear wheel 21 rotates,
The cell wall of planar rectangular thread groove 213, which can abut, pushes planar rectangular screw thread 3111, and base jaw 31 is driven radially to be retracted movement
Or outward radial is far from mobile.
As shown in Fig. 4, mounting portion 312 is elongated and one end is towards center shaft axis.Mounting portion 312 is towards center
Length direction level on the lower edge of one end face in axle center along mounting portion 312 offers slot 3121, the slot bottom of slot 3121
It is parallel with notch and be vertically arranged.
The top of mounting portion 312 is also installed with port 3122 that is vertical and being in polygon, and port 3122 penetrates through slot
3121.The shape of port 3122 according to the actual situation depending on, and preferably regular polygon, further preferably regular pentagon or just
Hexagon, port 3122 is regular hexagon herein.
Two upright side walls of its parallel length direction of mounting portion 312 and 311 junction of pedestal, which offer, wears mouth 3123, wears
In mounting portion 312, its underpart is located on pedestal 311 the top quartile of mouth 3123.Two wear mouth 3123 penetrate through slot 3121 and
Align, wear mouth 3123 shape can according to the actual situation depending on, be herein rectangle.
Pedestal 311 is provided with guide groove 3113 on the outside of separate 3121 one end of slot of wherein one perforation simultaneously.Guide groove
3113 are arranged along perforated longer, penetrate through the upper surface of pedestal 311, and the section of its vertical length direction of guide groove 3113 and Chuan Kou
3123 shapes are identical.
As shown in Fig. 6, embeded slot 3121-1 is additionally provided on the bottom surface of 3121 inner horizontal of slot.Embeded slot 3121-1
The length direction of vertical slot 3121, both ends are respectively communicated with two and wear mouth 3123, and its vertical length direction of embeded slot 3121-1
Section it is identical as the shape that mouth 3123 is located on pedestal 311 is worn.The bottom surface of 3121 inner horizontal of slot is in port 3122 simultaneously
Underface is additionally provided with vertical bolt hole 3121-2.
As shown in Fig. 4, replacement rest shoe 32 includes support block 321 and inserted block 322.Support block 321 is used towards central axis 4
Clamp workpiece in abutting, shape can according to the actual situation depending on, herein to be approximately right prism shape.
Inserted block 322 is located at support block 321 towards the side of slot 3121, and its is elongated.Inserted block 322 is towards slot 3121
Interior end face is vertical plane, and can be affixed and abut with the slot bottom of 3121 inner vertical of slot.Inserted block 322 is inserted into slot 3121
When, 3121 liang of upright side walls of two upright side walls of inserted block 322 along its length and slot are affixed.
Sagging locating slot 3221, the notch and port 3122 of locating slot 3221 are additionally provided on the upper surface of inserted block 322
Shape it is identical, the shape of locating slot 3221 can according to the actual situation depending on, locating slot 3221 is positive the recessed of six prismatic table shapes herein
Slot, and the notch area of the locating slot 3221 is greater than its slot bottom area.3221 slot bottom center of locating slot is offered through inserted block 322
Perforation 1.3221 notch of locating slot has two edges parallel with the slot bottom of slot 3121.
The bottom surface of inserted block 322 is provided with horizontally disposed hanging groove 3223 in one 3222 sides far from support block 321 of perforating.
The bottom surface of vertical 322 length direction of inserted block of hanging groove 3223 perforation inserted block 322.
Movable jaw 3 further includes fixing bolt 33, locating piece 34 and limit inserted link 35.Fixing bolt 33 is interior hexagonal herein
Bolt comprising threaded post 331 and screw first 332.
Locating piece 34 is in the form of a column, and height is greater than the vertical height of port 3122.Locating piece 34 includes the limited post of top
341 and lower end inserted terminal 342.Limited post 341 is vertical column, and horizontal cross sectional geometry is identical as 3122 shape of port,
When being inserted into limited post 341 in port 3122, the side of limited post 341 is aligned one by one with the inner wall of port 3122 to be affixed.Grafting
The shape at end 342 and the shape of locating slot 3221 are mutually agreed with, and are herein inverted positive six terrace with edge.While 34 upper surface of locating piece
Center and the center of its bottom surface are through with perforation 2 343, and perforation 2 343 passes through for threaded post 331.
Limit inserted link 35 can self- steering slot 3113 slide into insertion, the section of vertical length direction and wear 3123 shape of mouth
It is equal.Referring to attached drawing 7, limits side that inserting column is located in slot 3121 and bottom surface is fitted in embeded slot 3121-1.
As shown in Fig. 7, chuck is horizontally arranged in situation, and when replacement rest shoe 32 is installed, inserted block 322 is first inserted into slot
In 3121, and abut against inserted block 322 far from one end end face of support block 321 slot bottom vertical with slot 3121, at this time port
3122, perforation 1,2 343 and bolt hole 3121-2 of perforation are vertically aligned；Then filling in phase port 3122
Locating piece 34, inserted terminal 342 are inserted into locating slot 3221, and 341 upper end of limited post is inserted into the lower end of port 3122, finally from upper
And lower insertion fixing bolt 33, threaded post 331 sequentially pass through port 3122, perforation 1 and perforation 2 343, and and bolt hole
3121-2 is threadedly coupled, and is screwed first 332 and is abutted compression locating piece 34.Locating piece 34 is inserted into slot to inserted block 322 in the process
Position in 3121 is positioned, and convenient for the installation of subsequent fixed bolt 33, inserted block 322 occurs when fixing bolt 33 being avoided to install
Sliding.
As shown in Figure 8 and Figure 9, at the same the height of inserted block 322 be lower than slot 3121 height, the height of hanging groove 3223
It is equal to be higher than the height of 3121 horizontal bottom of slot with limit inserted link 35.Installation site of the chuck on machining tool is in addition to installation
It is also often mounted on vertical plane in the horizontal plane, then at least one in multiple movable jaws 3 replaces the inserted block 322 of rest shoe 32
It must be inserted upwardly into slot 3121.When replacement rest shoe 32 enters 3121 notch of slot downward base jaw 31, inserted block 322 is inserted into slot
After in 3121, hanging groove 3223 is articulated on the side of limit inserted link 35, is made in the temporarily mounting and slot 3121 of inserted block 322, and
Perforation 1 at this time is aligned with the part bolt hole 3121-2, and locating slot 3221 is aligned with 3122 part of port；Then again to logical
Locating pieces 34 are inserted in mouth 3122, inserted terminal 342 abuts 3221 cell wall of locating slot, forces inserted block 322 to move up, make inserted block
322 end is affixed with the slot bottom of slot 3121 and abuts, and limits inserted link 35 at this time and mutually separates with the cell wall of hanging groove 3223；Finally pacify
Fill fixing bolt 33.
When replacing the replacement of rest shoe 32, out of slot 3121 after extraction limit inserted link 35, fixing bolt 33 is screwed and exits spiral shell
After keyhole 3121-2, it is pulled outwardly plug block 322, the cell wall of locating slot 3221 can push locating piece 34, and locating piece 34 is forced to eject
Port 3122 can be taken off locating piece 34, then install new replacement rest shoe 32, when facilitating chuck to different workpieces processing more
Change replacement rest shoe 32.
Working principle of the utility model is:
When chuck clamping workpiece, multiple support blocks 321 compress the surface of workpiece, at this time the slot bottom of 3121 inboard, upright of slot
Support replacement rest shoe 32 is compressed towards central axis 4, makes fixing-stable be not easy to deviate, while replacing that workpiece suffered by rest shoe 32 is counter to be made
Pressure is directly conducted in base jaw 31, compared with passing through fixing bolt 33 in the prior art and conducting, base jaw 31 and replacement pawl
Compress that pressure conduction deviation is smaller between block 32, then the degree of wear suffered by the support block 321 of multiple movable jaws 3 is close, reduces
The reduction of chuck concentricity improves Workpiece Machining Accuracy, extends chuck repairing efficiency.
Simultaneously when chuck clamping work pieces process, multiple movable jaws 3 are subjected to circumferential twisting resistance, are especially carrying out work
When the cutting of part annular, twisting resistance is larger, the trend for making support block 321 that inserted block 322 be driven to deflect；Thus fixing bolt 33 is used
It in fixing bigslip, prevents cutting from extracting from slot 3121, while compressing stationary positioned block 34；The lower end insertion of locating piece 34 is fixed
In the slot 3221 of position, in the upper end insertion port 3122 of locating piece 34, locating piece 34 limits inserted block 322 and horizontal rotation occurs, into
And prevent support block 321 that inserted block 322 is driven to deflect, it is inserted into support block 321 in slot 3121 towards central axis 4 and inserted block 322
One end slot bottom vertical with slot 3121 be affixed and abut, reduce the deviation of power conduction between replacement fixture block and base jaw 31, in turn
It is further reduced the reduction of chuck concentricity, improves Workpiece Machining Accuracy.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (10)
1. a kind of chuck, including chuck body (1), claw driving assembly (2) and multiple movable jaws (3), the movable jaw (3)
It is uniformly distributed around a central axis (4), which is characterized in that the movable jaw (3) includes connecting with claw driving assembly (2)
The base jaw (31) connect, the replacement rest shoe (32) and fixing bolt (33) that are mounted on base jaw (31), the base jaw (31) is in
The side of mandrel line (4) offers horizontal-extending slot (3121), and slot (3121) notch is towards central axis
(4)；Base jaw (31) upper surface is provided with the port (3122) of perforation slot (3121), the bottom of slot (3121) level
Face is provided with bolt hole (3121-2) immediately below port (3122)；The replacement rest shoe (32) includes for abutting workpiece
Inserted block (322) in support block (321) and insertion slot (3121)；Vertical and and bolt hole is offered on the inserted block (322)
One (3222) of (3121-2) matched perforation；The inserted block (322) enters on the inside of one end and slot (3121) in slot (3121)
When vertical slot bottom is bonded abutting, one (3222) of the perforation are aligned with bolt hole (3121-2) and wear for fixing bolt (33)
If.
2. a kind of chuck according to claim 1, which is characterized in that the port (3122) is vertically arranged and through-hole is horizontal
Section is polygon；Inserted block (322) upper surface is provided with locating slot (3221) on the outside of perforation, the locating slot (3221)
Notch match with port (3122)；The movable jaw (3) further includes locating piece (34)；Locating piece (34) center is set
Be equipped with the perforation two (343) passed through for fixing bolt (33), in lower end insertion locating slot (3221) of the locating piece (34) and
Agree with locating slot (3221), agrees in upper end insertion port (3122) of the locating piece (34) and with port (3122).
3. a kind of chuck according to claim 2, which is characterized in that the horizontal cross-section of the port (3122) is positive polygon
Shape.
4. a kind of chuck according to claim 3, which is characterized in that the locating slot (3221) is in prism-frustum-shaped, and described
The notch area of locating slot (3221) is greater than the slot bottom area of locating slot (3221).
5. a kind of chuck according to claim 3, which is characterized in that the locating slot (3221) is in positive prism-frustum-shaped, and institute
The a side for stating close slot (3121) slot bottom of locating slot (3221) notch is parallel with slot (3121) slot bottom.
6. a kind of chuck according to claim 1, which is characterized in that the slot (3121) is inserted with vertical slot (3121)
The limit inserted link (35) of length direction；Inserted block (322) bottom surface is provided with hanging groove (3223), and the hanging groove (3223) is horizontal
The bottom surface of vertical inserted block (322) length perforation inserted block (322) on direction；The side of limit inserted link (35) and hanging groove
(3223) when vertical side wall abuts, one (3222) of the perforation partially overlap or are aligned with bolt hole (3121-2).
7. a kind of chuck according to claim 6, which is characterized in that one (3222) of the perforation and bolt hole (3121-2)
When alignment, the side of limit inserted link (35) is not abutted with the upright side walls of hanging groove (3223).
8. a kind of chuck according to claim 6, which is characterized in that the base jaw (31) is vertical and flat in slot (3121)
Capable two sidewalls, which offer, wears mouth (3123), and mouth (3123) is worn described in two and is aligned；Limit inserted link (35) insertion two is worn
In mouth (3123), and the side of limit inserted link (35) is mutually agreed with Chuan Kou (3123).
9. a kind of chuck according to claim 8, which is characterized in that the outside that the base jaw (31) wears mouth (3123) one
It is provided with along the guide groove (3113) for wearing the extension of mouth (3123) length direction.
10. a kind of chuck according to claim 8, which is characterized in that be arranged on the bottom surface of slot (3121) level
Have embeded slot (3121-1), the both ends of the embeded slot (3121-1) are respectively communicated with two and wear mouth (3123), and the embeded slot
(3121-1) is located at the side in slot (3121) with limit inserted link (35) and is bonded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821038076.3U CN208613783U (en) | 2018-07-02 | 2018-07-02 | A kind of chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821038076.3U CN208613783U (en) | 2018-07-02 | 2018-07-02 | A kind of chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208613783U true CN208613783U (en) | 2019-03-19 |
Family
ID=65704497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821038076.3U Active CN208613783U (en) | 2018-07-02 | 2018-07-02 | A kind of chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208613783U (en) |
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| CN111843558A (en) * | 2020-08-05 | 2020-10-30 | 马鞍山市新桥工业设计有限公司 | Industrial machine tool is with multi-functional casting anchor clamps with rapid disassembly structure |
| CN112122966A (en) * | 2020-09-22 | 2020-12-25 | 茂名职业技术学院 | Numerical control machine tool workpiece clamping device with angle adjusting function |
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| CN114794545A (en) * | 2021-01-19 | 2022-07-29 | 湖南中烟工业有限责任公司 | Heating body for heating cigarette smoking set and fixing structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112296752A (en) * | 2019-07-30 | 2021-02-02 | 陈昱廷 | Real-time on-line measuring device for clamping force of lathe clamping mechanism |
| CN113714457A (en) * | 2020-05-26 | 2021-11-30 | 广州汽车集团股份有限公司 | Device for centring rivets |
| CN113714457B (en) * | 2020-05-26 | 2023-08-15 | 广州汽车集团股份有限公司 | Device for centering rivets |
| CN111843558A (en) * | 2020-08-05 | 2020-10-30 | 马鞍山市新桥工业设计有限公司 | Industrial machine tool is with multi-functional casting anchor clamps with rapid disassembly structure |
| CN111843558B (en) * | 2020-08-05 | 2021-08-24 | 马鞍山市新桥工业设计有限公司 | Industrial machine tool is with multi-functional casting anchor clamps with rapid disassembly structure |
| CN112122966A (en) * | 2020-09-22 | 2020-12-25 | 茂名职业技术学院 | Numerical control machine tool workpiece clamping device with angle adjusting function |
| CN112122966B (en) * | 2020-09-22 | 2022-04-12 | 茂名职业技术学院 | Numerical control machine tool workpiece clamping device with angle adjusting function |
| CN114794545A (en) * | 2021-01-19 | 2022-07-29 | 湖南中烟工业有限责任公司 | Heating body for heating cigarette smoking set and fixing structure thereof |
| CN114794544A (en) * | 2021-01-19 | 2022-07-29 | 湖南中烟工业有限责任公司 | Heating cigarette smoking set with detachable heating body |
| CN113059630A (en) * | 2021-03-05 | 2021-07-02 | 陆迪坤 | A safe cutting drilling all-in-one for processing hollow class woodwork of cylinder |
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