CN209140398U - A kind of fixed device of four-jaw self-centering - Google Patents
A kind of fixed device of four-jaw self-centering Download PDFInfo
- Publication number
- CN209140398U CN209140398U CN201821961314.8U CN201821961314U CN209140398U CN 209140398 U CN209140398 U CN 209140398U CN 201821961314 U CN201821961314 U CN 201821961314U CN 209140398 U CN209140398 U CN 209140398U
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- supporting table
- fixed
- dovetail
- pedestal
- locking device
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Abstract
The utility model proposes a kind of fixed devices of four-jaw self-centering, including pedestal, drill bit support column, drill controller, drill bit and base cover plate, annular equidistant arrangement has at least three dovetail through slots on pedestal, dovetail groove sliding block is equipped in dovetail through slot, supporting table is fixed on dovetail groove sliding block, supporting table is equipped with a locking device, locking device includes two threaded rods across supporting table, threaded rod front end is twisted with a workpiece fixed block one end respectively to be connected, threaded rod is equipped with nut, secondary locking device is additionally provided in supporting table, the driving device for driving dovetail slide block to move is equipped in pedestal.The utility model drives planar rectangular threading action using cone tooth, the centripetal movement of dovetail groove sliding block is driven, because plane screw pitch is equal, guarantees that dovetail groove slide block movement is equidistant, realize workpiece self-centering, while a locking device cooperation secondary locking device guarantees that the clamping of workpiece is firm.
Description
Technical field
The utility model is more particularly to a kind of fixed device of four-jaw self-centering.
Background technique
In bench drill process, Workpiece structure is varied, but in the prior art, bench drill mostly uses greatly
Tooling is replaced according to different shapes, is exactly that tooling replacement is difficult to the fixed max disadvantage of workpiece using tooling, manpower and material resources
A large amount of investments, centre bore positioning is unreliable, and as tooling is replaced frequently, center is more and more unreliable, following
It is being continuously increased for defective products quantity.
Utility model content
In view of the above technical problems, the utility model provides a kind of fixed device of four-jaw self-centering.
A kind of fixed device of four-jaw self-centering, including pedestal, drill bit support column, drill controller, drill bit and pedestal
Cover board, annular equidistant arrangement has at least three dovetail through slots on pedestal, and dovetail groove sliding block is equipped in dovetail through slot, and dovetail groove is sliding
Supporting table is fixed on block, supporting table is equipped with a locking device, and a locking device includes across supporting table side
And two threaded rods being parallel to each other, both ends are separately connected a workpiece fixed block of a threaded rod one end simultaneously and are used for screw thread
The nut that bar and supporting table are fixed, the inner surface of workpiece fixed block are equipped with neonychium, and being additionally provided in supporting table can be by the first lock
Tight device is locked in the secondary locking device of a certain position of dovetail groove, and the driving for driving dovetail slide block to move is equipped in pedestal
Device.
Secondary locking device includes set on supporting table upper surface and being symmetrically arranged with two T-slots relative to threaded rod center line,
End face fixed block is equipped with above supporting table, end face fixed block and work piece interface are equipped with neonychium, and end face lower end of fixing block is fixed
There are the two rectangle sliding blocks slided up and down along T-slot, rectangle sliding block is equipped with threaded hole, and supporting table side is equipped with and threaded hole
The bolt of cooperation.
Preferably, driving device include a bottom be formed with the round turntable of auger tooth, one with bevel gear wheel cooperation it is small
The handwheel of bevel gear and a drive bevel pinion rotation, round turntable and bevel pinion are all set in pedestal, and dovetail groove is sliding
Block bottom is formed with rectangular teeth, and round turntable upper surface is equipped with the equidistant plane rectangular thread cooperated with rectangular teeth.
Preferably, ratchet is fixed on the inside of handwheel, base side is equipped with the check pawl for preventing handle from reversing, check pawl
It is equipped with torsional spring, check pawl and the base side are equipped with the limit rib of torsional spring cooperation.
Preferably, round turntable upper surface and lower surface is equipped with rotary shaft.
Preferably, base intracavity upper surface and base cover plate upper surface are equipped with rotary shaft fixed station.
Preferably, base cover plate bottom is equipped with non-slip mat.
Preferably, the rotation support column for being used to support bevel pinion is equipped in pedestal, rotation support column is equipped with rotation support
Column cover board.
Preferably, dovetail through slot is specially four
The utility model has the advantages that
1, dovetail through slot and dovetail groove slide unit cooperate, and realize the Workpiece boring demand of a variety of different sizes.
2, using neonychium, the frictional force between workpiece and locking device is increased, while avoiding workpiece damage.
3, double nuts structure reinforces locking force, amplifies nut self-locking effect.
4, double thread bar fixed mechanism is fixed, and can lock cone, water chestnut cone, square, the various structures such as cylindrical body.
5, handwheel drives small bevel gear rotation, small bevel gear drive planar rectangular screw thread rotation, while dovetail groove slide unit to make centripetal
Movement, because planar rectangular thread pitch is equal, therefore dovetail groove slide unit move distance is equal, realizes self-centering.
6, ratchet and check pawl prevent handwheel revolution from workpiece loosening belt being caused to carry out workpiece damage.End face fixed block uses
Lifting structure requires the suitable height of selection according to workpiece, facilitates the locking of short transverse.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described.
Fig. 1 is the structure chart of the utility model；
Fig. 2 is the structural schematic diagram that the utility model end face fixed block is detached from after T-slot；
Fig. 3 is the cross-sectional view of the utility model；
The schematic diagram of internal structure of Fig. 4 the utility model；
Fig. 5 is the schematic diagram of base structure of the utility model.
Digital representation in figure:
1, pedestal 2, drill bit support column 3, base cover plate 4, drill controller 5, dovetail through slot 7, dovetail groove sliding block
8, threaded rod 9, nut 10, workpiece fixed block 11, rectangular teeth 12, round turntable 13, planar rectangular screw thread 14, auger tooth
15, bevel pinion 16, handwheel 17, ratchet 18, check pawl 19, limit rib 20, torsional spring 21, rotary shaft 22, rotary shaft
Fixed station 24, non-slip mat 25, rotation support column 6, rotation support column cover board 27, drill bit 28, bolt 29, neonychium 30,
Supporting table 31, riveting pin 32, T-slot 33, end face fixed block 34, rectangle sliding block 35, threaded hole 36, torsional spring.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
Embodiment:
Fig. 1 is to a kind of fixed device of four-jaw self-centering shown in fig. 5, including the pedestal 1 for putting workpiece, pedestal 1
On be fixed with drill bit support column 2, drill controller 4 is installed, drill controller 4 is equipped with drill bit 27, drill bit on drill bit support column 2
Controller 4 drives drill bit 27 to punch workpiece, and 1 bottom of pedestal is equipped with base cover plate 3, and 3 bottom of base cover plate is equipped with anti-skidding
Pad 24, non-slip mat 24 increase the frictional force between ground, and 3 upper surface of base cover plate and 1 inner cavity upper surface of pedestal are equipped with
Rotary shaft fixed station 22, pedestal 1 is interior to be equipped with driving device, and driving device includes the round turntable 12 in pedestal 1, and circle turns
The rotary shaft 21 of the cooperation of rotary shaft fixed station 22 is equipped on 12 upper and lower surfaces of disk, 12 lower surface of round turntable is equipped with auger tooth
14, it is additionally provided with the small cone pulley 15 cooperated with auger tooth 14 in pedestal 1, handwheel 16 is fixed on small cone pulley 15, handwheel 16 is set to bottom
The right side of seat 1 drives bevel pinion 15 to rotate clockwise by rotation handwheel 16, and bevel pinion 15 is engaged with auger tooth 14, band
The dynamic rotation counterclockwise of round turntable 12,12 upper surface of round turntable is equipped with equidistant planar rectangular screw thread 13, planar rectangular screw thread
13 be left hand thread, and plane systematic screw thread 13 can equidistantly guarantee self-centering after Workpiece clamping, bevel pinion 15 and handwheel 16
Between be equipped with rotation support column 25, rotation support column 25 be equipped with rotation support column cover board 26, rotation support column 25 and rotation branch
The risk that the cooperation of dagger cover board 26 reduces the abrasion of bevel pinion 15 and falls off.1 upper surface annular equidistant arrangement of pedestal has four
A dovetail through slot 5 is equipped with dovetail groove sliding block 7 in dovetail through slot 5, and 7 lower surface of dovetail groove sliding block is equipped with and planar rectangular spiral shell
The rectangular teeth 11 that line 13 engages, rectangular teeth 11 pass through dovetail through slot 5 and are slidably set in pedestal 1,7 upper surface of dovetail groove sliding block
It is fixed with supporting table 30, drives four dovetail groove sliding blocks 7 close to center when round turntable 12 rotates counterclockwise.
When dovetail groove sliding block 7 moves to workpiece periphery, need a locking device in supporting table 30 to workpiece surrounding
It is clamped, a locking device includes set on across 30 side of supporting table and two threaded rods 8 that are parallel to each other, and threaded rod 8 refers to
To work centre line, two 8 front ends of threaded rod connect respectively at being twisted by riveting pin 31 for workpiece fixed block 10, and 8 liang of threaded rod
End is equipped with nut 9. and needs to lock threaded rod 8 by nut 9 after workpiece fixed block 10 is completely attached to workpiece.Workpiece
Fixed block 10 and work piece interface are equipped with neonychium 23, and neonychium 23 can increase the frictional force between workpiece and neonychium 23,
It simultaneously can be to avoid workpiece because clamping tension leads to the qualification rate of surface scratch influence workpiece.
After the completion of a locking device works, need to lock by longitudinal direction of the secondary locking device to workpiece, two
Secondary locking device includes set on 30 upper surface of supporting table and relative to symmetrical two T-slots 32 in 8 center of threaded rod, supporting table
30 tops are slidably equipped with end face fixed block 33, and end face fixed block 33 is fixed with two rectangle sliding blocks with the cooperation of 32 slot of T-type
34,34 are equipped with threaded hole 35 on rectangle sliding block, can be carried out according to the height sliding end face fixed block 33 of workpiece to workpiece
Longitudinally fixed, end face fixed block 33 and work piece interface are equipped with neonychium 23, need to pass through after neonychium 23 and workpiece contact
Bolt 28 locks end face fixed block 33 with the cooperation of threaded hole 35, and secondary locking device ensure that workpiece is longitudinally locked.
After the completion of handwheel 16 drives driving device work, need to prevent the revolution of handwheel 16 from leading to workpiece by ratchet mechanism
The unnecessary loss of bring is loosened, ratchet mechanism includes the ratchet 17 for being fixed on 16 inside of handwheel, and 1 right side of pedestal is equipped with and spine
The check pawl 18 of 17 cooperation of wheel, check pawl 18 are equipped with the torsional spring 36 for reset, 1 right side of check pawl 18 and pedestal
The limit rib 19 cooperated with torsional spring 36 is equipped on face, when 16 clockwise movement of handwheel, check pawl 18 automatically disengages ratchet
17 groove, check pawl 18 withstands 17 groove of ratchet under the drive of torsional spring 36 and limit rib 19 after the completion of movement, prevents
Only ratchet 17 turns round.When ratchet 17 rotates counterclockwise, need manually to lift check pawl 18, after the completion of rotation, check pawl
18 automatically reset under the drive of torsional spring 36.
The utility model can more convenient and accurately alignment pieces center, while to different workpieces realize press from both sides
Tightly, and it is simple to operate, workpiece surface can also be protected, more previous bench drill ceaselessly replaces tooling, and it is easy to operate,
It is easy to use, it is time saving and energy saving.
Claims (8)
1. a kind of fixed device of four-jaw self-centering, including pedestal, drill bit support column, drill controller, drill bit and base cover
Plate, which is characterized in that annular equidistant arrangement has at least three dovetail through slots on the pedestal；Swallow is equipped in the dovetail through slot
Stern notch sliding block；Supporting table is fixed on the dovetail groove sliding block；The supporting table is equipped with a locking device, the primary lock
Tight device includes across supporting table side and two threaded rods that are parallel to each other；Both ends are separately connected the one of a threaded rod one end simultaneously
Workpiece fixed block and for the nut that threaded rod and supporting table is fixed；The inner surface of the workpiece fixed block is equipped with protection
Pad；The secondary locking device that the first locking device can be locked with a certain position of dovetail groove is additionally provided in the supporting table；Institute
State the driving device being equipped in pedestal for driving dovetail slide block to move；Secondary locking device include set on supporting table upper surface and
Two T-slots are symmetrically arranged with relative to threaded rod center line；End face fixed block is equipped with above the supporting table；The end face fixed block
Neonychium is equipped with work piece interface；The end face lower end of fixing block is fixed with the two rectangle sliding blocks slided up and down along T-slot；
The rectangle sliding block is equipped with threaded hole；The supporting table side is equipped with the bolt cooperated with threaded hole.
2. the fixed device of a kind of four-jaw self-centering according to claim 1, which is characterized in that the driving device packet
It includes a bottom and is formed with the round turntable of auger tooth, a bevel pinion cooperated with bevel gear wheel and a drive small bevel gear rotation
Dynamic handwheel；The round turntable and bevel pinion are all set in pedestal；Dovetail groove slider bottom is formed with rectangular teeth；It is described
Round turntable upper surface is equipped with the equidistant plane rectangular thread cooperated with rectangular teeth.
3. the fixed device of a kind of four-jaw self-centering according to claim 2, which is characterized in that solid on the inside of the handwheel
Surely there is ratchet；The base side is equipped with the check pawl for preventing handle from reversing；The check pawl is equipped with torsional spring；It is described to stop
It returns pawl and the base side is equipped with the limit rib of torsional spring cooperation.
4. the fixed device of a kind of four-jaw self-centering according to claim 2, which is characterized in that on the round turntable
Surface and lower surface are integrally formed with rotary shaft.
5. the fixed device of a kind of four-jaw self-centering according to claim 1, which is characterized in that on the base intracavity
Surface and base cover plate upper surface are integrally formed with rotary shaft fixed station.
6. the fixed device of a kind of four-jaw self-centering according to claim 1, which is characterized in that the base cover plate bottom
Portion is equipped with non-slip mat.
7. the fixed device of a kind of four-jaw self-centering according to claim 1, which is characterized in that be equipped in the pedestal
It is used to support the rotation support column of bevel pinion；The supporting table is equipped with rotation support column cover board.
8. the fixed device of a kind of four-jaw self-centering according to claim 1, which is characterized in that the dovetail through slot tool
Body is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821961314.8U CN209140398U (en) | 2018-11-27 | 2018-11-27 | A kind of fixed device of four-jaw self-centering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821961314.8U CN209140398U (en) | 2018-11-27 | 2018-11-27 | A kind of fixed device of four-jaw self-centering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209140398U true CN209140398U (en) | 2019-07-23 |
Family
ID=67287715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821961314.8U Active CN209140398U (en) | 2018-11-27 | 2018-11-27 | A kind of fixed device of four-jaw self-centering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209140398U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872613A (en) * | 2020-08-03 | 2020-11-03 | 中车长春轨道客车股份有限公司 | Universal assembly tool for bogie frame of railway passenger car |
| CN112045561A (en) * | 2020-09-04 | 2020-12-08 | 台州浙盛轴承科技有限公司 | Clamping device for bearing machining |
| CN114397432A (en) * | 2022-03-24 | 2022-04-26 | 四川省水利水电勘测设计研究院有限公司 | Concrete structure surface crack detection device |
-
2018
- 2018-11-27 CN CN201821961314.8U patent/CN209140398U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872613A (en) * | 2020-08-03 | 2020-11-03 | 中车长春轨道客车股份有限公司 | Universal assembly tool for bogie frame of railway passenger car |
| CN112045561A (en) * | 2020-09-04 | 2020-12-08 | 台州浙盛轴承科技有限公司 | Clamping device for bearing machining |
| CN114397432A (en) * | 2022-03-24 | 2022-04-26 | 四川省水利水电勘测设计研究院有限公司 | Concrete structure surface crack detection device |
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