CN108673214A - Magnetic force adjustment unit and clamping device - Google Patents
Magnetic force adjustment unit and clamping device Download PDFInfo
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- CN108673214A CN108673214A CN201810839377.4A CN201810839377A CN108673214A CN 108673214 A CN108673214 A CN 108673214A CN 201810839377 A CN201810839377 A CN 201810839377A CN 108673214 A CN108673214 A CN 108673214A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
- B23Q3/154—Stationary devices
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- Jigs For Machine Tools (AREA)
Abstract
The present invention provides it is a kind of can clamping thin-walled curved-surface piece class, flexible piece class clamping device, including magnetic force adjustment unit, height adjusting unit, computer and pressure sensing patch.Magnetic force adjustment unit, including babinet, magnetorheological fluid and two identical magnetic force adjustment mechanisms, for adjusting the chucking power between the part of the magnetorheological fluid being contained in babinet and clamping in magnetorheological fluid, height adjusting unit, including：Lifting assembly and height drive component, the height for adjusting part.A kind of clamping device provided by the invention has operation flexible, to the adaptable of accessory size, it can be according to the power vibrated in the rigidity of part and processing, magnetorheological fluid solidification effect is adjusted in time, clamping brace, effectiveness in vibration suppression are apparent, and stability, accuracy, reliability in part processing is effectively ensured.
Description
Technical field
The present invention relates to clamping apparatus fields, and in particular to a kind of clamping device of magnetic force adjustment unit.
Background technology
In manufacturing field, thin-walled, flexible piece workpiece to be machined very common when being processing.The machining accuracy control of these workpiece
System is always problem, the reason is that thin-walled parts poor rigidity, intensity are weak, in process thin-wall part can be locally deformed with and
Overall processing deforms, and especially deformation caused by clamping technique is its important reason, influences processing quality and precision.Such as exist
In the industrial production of these components, common jig is tight to work piece positioning, but because its clamping force is difficult to hold, clamping force mistake
It is small, the movement of workpiece in process can be led to, so as to cause the failure of processing：Clamping force is excessive, can lead to workpiece itself
Deformation generates large effect to the shaped position tolerance after work pieces process.In addition the vibration that workpiece generates in process
It may make workpiece that dimension precision requirement be not achieved and cause to do over again or scrap.Most of fixtures be only used for hard parts processing and
Assembly, needs specially to design corresponding fixture, this is greatly limited for the part of yielding part especially special-shaped thin wall class
The flexibility for having made production and processing, cannot be satisfied the production requirement of multi-varieties and small-batch.As height is pursued by more and more enterprises
Quick manufacturing objective is imitated, the chucking appliance system with high flexibility is applied and given birth in machinery industry.
In current field of machining, the method for thin-walled, the clamping of flexible piece, use is：(1) Auxiliary support is pressed from both sides
Tool, usually using the material of " Dai Mu ", also known as machinable resin plate is processed.But it is long for the wooden Operational preparation time,
Workpiece needs repeatedly to overturn in whole process, and often overturning once is required for readjusting, and clamping takes.Workpiece thin-walled
Place is curved surface, and is plane for the wooden top, and the way of contact of most of Dai Muyu workpiece contacts for line, and contact position is workpiece
In outer rim curl, support effects are undesirable；Clamping force size cannot be detected when in addition to parts fixation, be unable to ensure clamping
The reasonability of power so that reliability will be far short of what is expected with controlling.(2) fixture is can adjust, according to processing object technologic
Similitude, the close degree of size carry out what classification marshalling was designed to part.Its structure is usually to consist of two parts.
One is essential part, including clamp body, clamping device and operating mechanism etc..It can be fixed on lathe for a long time, not with processing
The change of object and replace.The second is replaceable adjustment member, including certain positioning, clamping and director element etc..It is with processing
Object is different and adjusts and replaces.When in use, to the processing of different part in same group, only need to change or adjust in relation to positioning and
Clamping element.(3) built-up jig be the complete modularization of fixture and it is standardized on the basis of, it is previously fabricated good by a whole set of
Standard component and component, be assembled into various special fixtures rapidly for different workpieces object, these fixtures cooperate
Partial size has absolute interchangeability.After fixture use, then it is broken into element and component, is a kind of reusable
Chucking appliance system.There are two types of the built-up jigs of type, i.e. slot system built-up jig and dowel-pin modular fixture at present.Slot system built-up jig exists
Develop in production and used more than 50 years, it is realized to workpiece with parallel T-slot by orthogonal on pedestal
It is pinpoint, within the system, when fixture is fastened on same row's T-slot, especially want reasonable arrangement fixture
Assembling sequence.(4) phase transformation fixture be using some materials have controllable phase transformation physical property (i.e. from liquid phase to solid phase, then
Become liquid phase again), the mechanism of phase transformation is usually fuel factor or galvanomagnetic-effect.Truth become material mainly have low-melting alloy, paraffin,
Er material etc..Low-melting alloy fixture is the master for solving low rigid, particularly low rigid complex profile workpiece positioning and fastening
Want means.Wax consolidates fixture, other substances (such as rosin) are added using simple paraffin or in paraffin as the fixture of phase change material.
Ice consolidates fixture, is the fixture used using water fluid as phase change material.Er material fixture is by low insulation liquid and suspension
Insulating bodies wherein is constituted.When ER materials are in electric field, significant changes can occur for rheological property, and viscosity can be with
Than increasing several orders of magnitude when being not powered on；When electric field is more than critical value, ER materials become solid-state, modulus of shearing with
Further increasing for electric field and increase.After removing electric field, viscosity restores initial value quickly again, and system can be re-converted to liquid
State.
The major defect of the prior art is in summary：
1. the requirement of composition element quality is high, early investment is costly, this due to being that combination superposition " playing with building blocks " forms
Flexible fixture poor rigidity, it is difficult to adapt to heavy cut, it is difficult to clamping irregular shape part, and the requirement technology to assembling and setting
It is high；Part category and quantity need specialized management more simultaneously, higher using management cost；
2. fixture adjustment time is long, of high cost, and clamping force is difficult adjustment control, and adaptive is poor, and fixture adjusted
In the experience of dependence；
3. existing magnetorheological fluid class fixture mainly utilizes electromagnet apparatus that galvanomagnetic-effect occurs, magnetic fields are generated, are reached
Magnetorheological fluid liquid solidification effect.But since electromagnet generates a large amount of heat at work, additional water-cooling apparatus is needed, folder is made
It is specific bulky, and line arrangement is complicated, calutron water proofing property is more demanding, makes to be extremely limited using scene.
4. in mechanical processing process, need to use work piece holder, usually there is the generation of oscillation phenomenon, it can not only add
Chatter mark is left on work surface, and influences the processing quality of workpiece, and stability is poor, exacerbates the abrasion of cutter.
For disadvantages described above, it is accordingly required in particular to a kind of simple and practical and adaptable thin-walled, flexible piece class part
Clamping device, to meet the growing precision machined needs of multi-varieties and small-batch thin-wall part.
Invention content
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide one kind being capable of clamping thin-walled curved-surface piece
The clamping device of class, flexible piece class.
The present invention provides a kind of magnetic force adjustment units, which is characterized in that including：Magnetorheological fluid；Babinet, box house tool
There is clamping plate, clamping plate is for holding magnetorheological fluid；And Liang Ge magnetic force adjustments mechanism, the both sides of babinet are symmetrically arranged at,
In, the suspended substance that magnetorheological fluid is high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid mix,
Parts to be processed clamping by way of in partial insertion magnetorheological fluid has in magnetorheological fluid by Liang Ge magnetic force adjustments mechanism
Some magnet assemblies synchronize close or separate babinet to realize the chucking power adjusted between magnetorheological fluid and part.
In a kind of magnetic force adjustment unit provided by the invention, also have the feature that：Wherein, in the effect of magnetic field magnetic force
Under, small soft magnetic particles are magnetized, and attract each other between the small soft magnetic particles after magnetization, hole becomes smaller so that magnetic current
Becoming liquid becomes solid-state from liquid and forms an entirety with part, in the contact surface of part and solid magnetorheological fluid contact site
Upper formation normal pressure, when part has the tendency that movement in process, part and small soft magnetism under the action of normal pressure
Property particle between will produce frictional force, as chucking power, it can hinder the relative motion of curved surface part, to realize securely clamping
Part, magnetic field magnetic force is bigger, then chucking power is then bigger.
In a kind of magnetic force adjustment unit provided by the invention, also have the feature that：Wherein, magnetic force adjustment mechanism includes
Magnetic drive components and magnet assemblies, the magnet that magnet assemblies have magnetic field intensity sufficiently large.
In a kind of magnetic force adjustment unit provided by the invention, also have the feature that：Wherein, magnetic drive components include
Base, magnetic drive motor base, magnetic drive motor, shaft coupling, bearing group, the first ball-screw, the first ball-screw spiral shell
Female and guide rail group, magnetic drive motor base are fixed on base, and magnetic drive motor is fixed on magnetic drive motor base
On, shaft coupling is mounted on magnetic drive motor, and bearing group includes the first bearing with the first threaded hole and with second
Second bearing of threaded hole, the first bearing, the second bearing are both secured on base, and the first ball-screw passes through the first threaded hole
It being threadedly coupled with the first bearing, one end is threadedly coupled by the second threaded hole with the second bearing, and the other end is connect with shaft coupling, the
One ball-screw nut is mounted on the first ball-screw, between the first bearing and the second bearing, the first ball-screw spiral shell
Mother is equipped with magnet assemblies pedestal, and guide rail group includes the first guide rail with the first guide rail line, second with the second guide rail line leads
Rail, the first guide rail, the second guide rail are symmetricly set on the both sides of the first ball-screw and are fixedly connected with base.
The present invention provides a kind of clamping device for additionally providing, place on the table, for clamping thin-walled curved-surface piece class,
Flexible piece class part, including：Magnetic force adjustment unit, magnetic force adjustment unit are foregoing magnetic force adjustment unit.
Clamping device provided by the invention further includes：Height adjusting unit, the height for adjusting part, including lifting
Component and height drive component；Pressure sensing pastes, and is pasted onto on the contact surface of part and magnetorheological fluid contact site, for feeling
Answer the chucking power between part and magnetorheological fluid；And control unit, for controlling height adjusting unit and magnetic force adjustment list
Member, wherein pressure sensing patch is connect by connecting line with control unit, and magnetic drive motor is connected by connecting line and control unit
It connects, control unit does fortune close or far from babinet by controlling the progress positive and negative rotation of magnetic drive motor come regulating magnet component
It is dynamic.
In clamping device provided by the invention, also have the feature that：Wherein, lifting assembly includes bottom plate, fixation
Pedestal, the first lifting bottom plate, the second lifting bottom plate, lifting ball-screw, pillar group and lifting ball-screw nut, bottom plate,
It places on the table, firm banking is fixedly connected with bottom plate, is had and is lifted the threaded hole that matches of ball-screw, first liter
It drops bottom plate and is equipped with the threaded hole to match with lifting ball-screw, the second lifting bottom plate is equipped with and lifts what ball-screw matched
There is box baseplate, box baseplate to be fixedly connected with the second lifting bottom plate for threaded hole and the hole to match with pillar group, babinet,
Box baseplate is equipped with the hole to match with pillar group, and pillar group passes through the hole for sequentially passing through box baseplate, second to lift bottom plate
Hole, one end are fixedly connected with the first lifting bottom plate, and the other end is connect with Boards wall, lifts ball-screw, passes through the first lifting
The threaded hole of bottom plate is connect with the first lifting base thread, and one end is connected by the threaded hole of firm banking with firm banking screw thread
It connects, the other end is connect by the threaded hole at the second lifting bottom with the second lifting base thread, lifting ball-screw nut and lifting
Ball-screw is threadedly coupled, and is located between firm banking and the first lifting bottom plate, and is fixedly connected with the first lifting bottom plate, base
Be placed on, be fixedly connected with bottom plate.
In clamping device provided by the invention, also have the feature that：Wherein, height drive component includes that height is driven
Dynamic motor base, altitude drive motor, the first synchronous pulley, the second synchronous pulley and synchronous belt, altitude drive motor pedestal
It is fixedly connected on bottom plate, altitude drive motor is fixedly connected on altitude drive motor pedestal, single with control by connecting line
Member connection carries out positive and negative rotation by altitude drive motor shown in control by control unit and is risen or fallen to adjust clamping plate, the
One synchronous pulley is mounted on altitude drive motor, and the second synchronous pulley is fixedly mounted on lifting ball-screw, is located at lifting
Between ball-screw nut and firm banking, one end of synchronous belt connects the first synchronous pulley, and the other end connects the second synchronous belt
Wheel.
The effect of invention
According to a kind of clamping device according to the present invention, because of unique rational design, provided by the invention one
Kind clamping device has operation flexibly, can be strong according to what is vibrated in the rigidity of part and processing to the adaptable of accessory size
It is weak, in time adjust magnetorheological fluid solidification effect, clamping brace, effectiveness in vibration suppression are apparent, be effectively ensured part processing in stability,
Accuracy, reliability.
Description of the drawings
Fig. 1 is a kind of overall structure diagram of clamping device provided by the invention；
Fig. 2 is the structural schematic diagram of the height adjusting unit and babinet in a kind of clamping device provided by the invention；And
Fig. 3 is that the structure of the magnetic drive components in the magnetic force adjustment unit in a kind of clamping device provided by the invention is shown
It is intended to.
Specific implementation mode
It is real below in order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand
Example combination attached drawing is applied to be specifically addressed a kind of clamping device provided by the invention.
Fig. 1 is a kind of overall structure diagram of clamping device provided by the invention；
Fig. 2 is the structural schematic diagram of the height adjusting unit and babinet in a kind of clamping device provided by the invention；
Fig. 3 is that the structure of the magnetic drive components in the magnetic force adjustment unit in a kind of clamping device provided by the invention is shown
It is intended to.
As shown in Figure 1, a kind of clamping device 100 provided by the invention, is placed on the table, it is to be processed for clamping
Thin wall, flexible piece class part, including：Height adjusting unit, magnetic force adjustment unit, computer (not shown) and pressure sensing
Paste (not shown).
As shown in Figure 1 and Figure 2, height adjusting unit, for adjusting to be processed part of the clamping in clamping device 100
Height, including：Lifting assembly and height drive component.
Lifting assembly includes bottom plate 10, the lifting bottom plate 12 of firm banking 11, first and pillar group, the second lifting bottom plate
15, ball-screw 16, lifting ball-screw nut 17 and fixture block group are lifted.
Bottom plate 10 is placed on the table.
Firm banking 11 is fixedly connected with bottom plate 10, (is not marked equipped with the threaded hole to match with lifting ball-screw 16
Go out).
First lifting bottom plate 12 is equipped with the threaded hole (not shown) to match with lifting ball-screw 16.
Pillar group is two identical pillars, including the first pillar 13 and the second pillar 14.
First pillar 13 sequentially passes through the hole to match with the first pillar 13 being arranged on the second lifting bottom plate 15, setting
The hole to match with the first pillar 13 in box baseplate 31, one end with first lifting bottom plate 12 be fixedly connected, the other end with
Clamping plate 32 is fixedly connected.
Second pillar 14 sequentially passes through the hole to match with the second pillar 14 being arranged on the second lifting bottom plate 15, setting
The hole to match with the second pillar 14 in box baseplate 31, one end with first lifting bottom plate 12 be fixedly connected, the other end with
Clamping plate 32 is fixedly connected.
Second lifting bottom plate 15 be equipped with the threaded hole that matches of lifting ball-screw 16 and respectively with the first pillar 13,
The hole (not shown) that second pillar 14 matches.
Lifting ball-screw 16 passes through the threaded hole of the first lifting bottom plate 12 to be threadedly coupled with the first lifting bottom plate 12, one end
It is threadedly coupled with firm banking 11 by the threaded hole of firm banking 11, the threaded hole and that the other end passes through the second lifting bottom 15
Two lifting bottom plates 15 are threadedly coupled.
Lifting ball-screw nut 17 is threadedly coupled with lifting ball-screw 16, is located at firm banking 11 and first and is lifted bottom
Between plate 12, and it is fixedly connected with the first lifting bottom plate 12.
Fixture block group is two mutually isostructural U-board blocks 18, is individually placed to the both sides of synchronous belt 24, same for protection first
Step belt wheel 22 and the second synchronous pulley 23 synchronize movement.
Height drive component includes altitude drive motor pedestal 20, altitude drive motor 21, the first synchronous pulley 22, second
Synchronous pulley 23 and synchronous belt 24.
Altitude drive motor pedestal 20 is fixedly connected on bottom plate 10.
Altitude drive motor 21 is fixedly connected on altitude drive motor pedestal 20, is connect with computer by connecting line.
First synchronizing wheel 22 is mounted on altitude drive motor 21.
Second synchronous pulley 23 is fixedly mounted on lifting ball-screw 16, is located at lifting ball-screw nut 17 and is fixed
Between pedestal 11.
One end of synchronous belt 24 connects the first synchronous pulley 22, and the other end connects the second synchronous pulley 23.
As shown in Figure 1, Figure 2, Figure 3 shows, magnetic force adjustment unit, including babinet 30, magnetorheological fluid (not shown) and two phases
Same magnetic force adjustment mechanism.
Babinet 30 is placed on the second lifting bottom plate 15, including box baseplate 31, clamping plate 32, antinose-dive leg 33, babinet branch
Column group and cabinet shell 35.
Box baseplate 31 is equipped with passes through the hole (not shown) of box baseplate 31 and for second for the first pillar 13
Column 14 passes through the hole (not shown) of box baseplate 31, box baseplate 31 to be fixedly connected with the second lifting bottom plate 15.
Clamping plate 32 is for placing magnetorheological fluid.Antinose-dive leg 33 is used to support babinet.
Babinet pillar group includes four identical babinet pillars 34, is respectively distributed on 32 4 angles of clamping plate, for fixing
Connecting cleat 32 and antinose-dive leg 33.
By being between 32, four babinet pillars 34 of clamping plate and the frame structure formed of antinose-dive leg 33 and cabinet shell 35
Can be relatively movable, being also between box baseplate 31 can be relatively movable.
Cabinet shell 35 is equipped with relief port (not shown), is recycled to magnetorheological fluid after processing convenient for part.
35 opposite case bottom plate 31 of cabinet shell is can be movable.
Magnetorheological fluid is mixed by high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid
Suspended substance.In magnetic field under the action of magnetic force, small soft magnetic particles are magnetized, between the small soft magnetic particles after magnetization mutually
Attract, hole becomes smaller so that magnetorheological fluid becomes solid-state from liquid and forms an entirety with part, in part and solid magnetic
Normal pressure is formed on the contact surface of rheology liquid contact site, when part has the tendency that movement in process, in normal pressure
Under the action of will produce frictional force, as chucking power between part and small soft magnetic particles, it can hinder the phase of curved surface part
To movement, to realize secured holding parts, magnetic field magnetic force is bigger, then chucking power is then bigger.
Pressure sensing patch is pasted onto on the position that part is not processed, and part is pasted with when clamping the portion of pressure sensing patch
Divide and be inserted into magnetorheological fluid, position to be processed is left outside.
Pressure sensing patch for incuding the chucking power between magnetorheological fluid and part, pressure sensing patch also by connecting line with
Computer connects so that the chucking power between magnetorheological fluid and part can be read out by computer.
Two identical magnetic force adjustment mechanisms, are located at the both sides of babinet 30, for adjust magnetorheological fluid and part it
Between chucking power.
Magnetic force adjustment mechanism includes magnetic drive components 40 and magnet assemblies 50.
Magnetic drive components 40 include base 41, magnetic drive motor base 42, magnetic drive motor 43, shaft coupling 44,
Bearing group, the first ball-screw 47, the first ball-screw nut 48 and guide rail group,
Base 41 is fixed on bottom plate 10, is fixedly connected with bottom plate 10.
Magnetic drive motor base 42 is fixed on base 41.
Magnetic drive motor 43 is fixed on magnetic drive motor base 42, is connect with computer by connecting line.
Shaft coupling 44 is mounted on magnetic drive motor 43.
Bearing group includes the first bearing 45 with the first threaded hole (not shown) and (is not marked with the second threaded hole
Go out) the second bearing 46, the first bearing 45, second 46 is both secured on base 41.
First ball-screw 47 is threadedly coupled across the first threaded hole with the first bearing 45, one end by the second threaded hole with
Second bearing 46 is threadedly coupled, and the other end is connect with shaft coupling 44.
First ball-screw nut 48 is mounted on the first ball-screw 47, be located at the first bearing 45 and the second bearing 46 it
Between, the first ball-screw nut 48 is equipped with magnet assemblies pedestal 49.
Guide rail group includes that the first guide rail 61 with the first guide rail line 611 and second with the second guide rail line 621 are led
Rail 62, the first guide rail 61, the second guide rail 62 are symmetricly set on the both sides of the first ball-screw 47 and are fixedly connected with base 41.
Magnet assemblies 50 are the chamber with magnet, and the magnetic field intensity of magnet is sufficiently large.
Computer adjusts the height of part of the clamping in clamping device 100 by controlling 21 positive and negative rotation of altitude drive motor
Degree also does movement close or far from babinet 30 by controlling the positive and negative rotation of magnetic drive motor 43 come regulating magnet component,
To realize that the variation for adjusting the magnetic field size that magnetorheological fluid senses, final realize are clamped between adjusting magnetorheological fluid and part
Power size.
A kind of use principle of clamping device 100 provided by the invention is as follows：
Magnetic drive motor 43, altitude drive motor 21 are respectively communicated with power supply by step 1, and respectively by connecting line with
Computer is connected.
Step 2 is opened magnetic drive motor 43 by computer and is rotated forward, until magnet assemblies 50 are moved to far from babinet
When the end of 30 sides, magnetic drive motor 43 is closed.
Step 3 is contained in the magnetorheological fluid of liquid on clamping plate 32.
Pressure sensing patch is pasted onto not being processed on the surface of part for part by step 4.
Step 5, part be pasted with pressure sensing patch be inserted partially into magnetorheological fluid.
Step 6 pastes pressure sensing by connecting line and is connected with computer.
Step 7, by computer regulated part to properly processed height, specific manifestation is as follows；
If the existing height of part is higher, rotated forward by computer Lift driving motor 21, then clamping plate 32 declines, directly
Altitude drive motor 21 is closed when dropping to the processed height of optimum to part；
If it is relatively low that part has height, being inverted by computer Lift driving motor 21, then clamping plate 32 rises, until
Part closes altitude drive motor 21 when rising to the processed height of optimum.
Step 8, by the chucking power between computer regulated part and magnetorheological fluid, specific manifestation is as follows；
Magnetic drive motor 43 is opened by computer to invert, then the magnet assemblies 50 of 30 both sides of babinet are all close to babinet
30, magnetic field magnetic force becomes larger, and magnetorheological fluid becomes solid-state from liquid, and the chucking power between part and magnetorheological fluid becomes larger, until folder
Holding force increases to suitable size, closes magnetic drive motor 43.
If desired step 9 adjusts height, then repeatedly step 7 again during being processed to part, if clamping
When power needs to change again, then chucking power is adjusted again, specific manifestation is as follows；
If the chucking power between part and magnetorheological fluid is too big, part might have damage in process, pass through meter
Calculation machine is opened magnetic drive motor 43 and is rotated forward, then all far from babinet 30, magnetic field magnetic force becomes smaller the magnet assemblies 50 of 30 both sides of babinet,
Chucking power between part and magnetorheological fluid becomes smaller, until chucking power is reduced to suitable size, closing magnetic drive motor 43；
If the chucking power between part and magnetorheological fluid is too small, part might have damage in process, pass through meter
Calculation machine is opened magnetic drive motor 43 and is inverted, then all close to babinet 30, magnetic field magnetic force becomes larger the magnet assemblies 50 of 30 both sides of babinet,
Chucking power between part and magnetorheological fluid becomes larger, until chucking power increases to suitable size, closing magnetic drive motor 43.
Step 10 after part processes, unloads part, and recycle to magnetorheological fluid, specific manifestation is as follows；
By computer magnetic drive motor 43 to be opened to rotate forward, then the magnet assemblies of 30 both sides of babinet are all far from babinet 30,
Magnetic field magnetic force becomes smaller, and magnetorheological fluid becomes liquid from solid-state, then passes through the 21 positive and negative modulation of computer Lift driving motor
Section clamping plate 32 to suitable convenient for unloading the height of part, unload part, the relief port pair that finally 30 back of opening babinet has
Magnetorheological fluid is recycled.
To sum up, a kind of clamping device 100 provided by the invention has following features：
1. positioning and clamping is efficient, a set of clamping device 100 can realize coarse-fine processing and loading clamp, reduce resetting technique and
The error of generation；
2. the flexibility degree of clamping parts can be improved by height adjusting unit, it is arbitrary to be suitable for certain size range
Thin-wall curved-surface, shell part；
3. solid characteristic, the magnetorheological fluid of solid state can be become from liquid under the action of a magnetic force by magnetorheological fluid
Auxiliary support can be provided for thin-wall part weak part, and reduce the vibration in part process, reduce part deformation；
4. the chucking power controllability between magnetorheological fluid and part passes through the pressure sensing patch induction pressure of part outer surface
Power, and by computer-readable, computer can open 217 forward or reverse of driving motor according to the size of chucking power, to
Control magnet assembly 22 is close or driving motor 217 is avoided the occurrence of because of clamping force not to make effective control to chucking power
Part deformation and damage caused by rationally.
The effect of embodiment
A kind of clamping device involved by embodiment provides because of unique rational design in the present embodiment
A kind of clamping device have operation flexible, to the adaptable of accessory size, can be vibrated according in the rigidity of part and processing
Power, in time adjust magnetorheological fluid solidification effect, clamping brace, effectiveness in vibration suppression are apparent, be effectively ensured part processing in it is steady
Qualitative, accuracy, reliability.
The above embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.
Claims (8)
1. a kind of magnetic force adjustment unit, which is characterized in that including：
Magnetorheological fluid；
Babinet, the box house have clamping plate, and the clamping plate is for holding the magnetorheological fluid；And
Liang Ge magnetic force adjustments mechanism, is symmetrically arranged at the both sides of the babinet,
Wherein, the magnetorheological fluid be high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid mixing and
At suspended substance,
Parts to be processed by way of in magnetorheological fluid described in partial insertion clamping in the magnetorheological fluid,
The magnet assemblies having by two magnetic force adjustment mechanisms are synchronized close or are adjusted far from the babinet to realize
Chucking power between the magnetorheological fluid and the part.
2. magnetic force adjustment unit according to claim 1, it is characterised in that：
Wherein, under the action of the magnetic force of magnetic field, the small soft magnetic particles are magnetized, the small soft magnetism after magnetization
Grain between attract each other, hole becomes smaller so that the magnetorheological fluid from liquid become solid-state and with the part formed one it is whole
Body forms normal pressure, when part is processed on the contact surface of the part Yu the solid magnetorheological fluid contact site
When the trend of Cheng Zhongyou movements, it will produce between the part and the small soft magnetic particles under the action of normal pressure
Frictional force, as chucking power, it can hinder the relative motion of the curved surface part, and the part, magnetic is securely clamped to realize
Field magnetic force is bigger, then chucking power is then bigger.
3. magnetic force adjustment unit according to claim 1, it is characterised in that：
Wherein, the magnetic force adjustment mechanism includes magnetic drive components and the magnet assemblies, and the magnet assemblies have magnetic field
The sufficiently large magnet of intensity.
4. magnetic force adjustment unit according to claim 3, it is characterised in that：
Wherein, the magnetic drive components include base, magnetic drive motor base, magnetic drive motor, shaft coupling, bearing
Group, the first ball-screw, the first ball-screw nut and guide rail group,
The magnetic drive motor base is fixed on the base,
The magnetic drive motor is fixed on the magnetic drive motor base,
The shaft coupling is mounted on the magnetic drive motor,
The bearing group includes the first bearing with the first threaded hole and the second bearing with the second threaded hole, described
First bearing, second bearing are both secured on the base,
First ball-screw is threadedly coupled across first threaded hole with first bearing, and one end passes through described
Two threaded holes are threadedly coupled with second bearing, and the other end is connect with the shaft coupling,
First ball-screw nut is mounted on first ball-screw, is located at first bearing and described second
Between seat, first ball-screw nut is equipped with the magnet assemblies pedestal,
The guide rail group includes first guide rail with first guide rail line, the second guide rail with second guide rail line,
First guide rail, second guide rail, which are symmetricly set on the both sides of first ball-screw and are fixed with the base, to be connected
It connects.
5. a kind of clamping device is placed on the table, for clamping thin-walled curved-surface piece class, flexible piece class part, feature exists
In, including：
Magnetic force adjustment unit, the magnetic force adjustment unit are the magnetic force adjustment unit described in claim 1-4 any one.
6. clamping device according to claim 5, further includes：
Height adjusting unit, the height for adjusting the part, including lifting assembly and height drive component；
Pressure sensing pastes, and is pasted onto on the contact surface of the part and the magnetorheological fluid contact site, for incuding described zero
Chucking power between part and the magnetorheological fluid；And
Control unit, for controlling the height adjusting unit and the magnetic force adjustment unit,
Wherein, the pressure sensing patch is connect by connecting line with described control unit,
The magnetic drive motor is connect by connecting line with described control unit,
Described control unit by control the magnetic drive motor carry out positive and negative rotation adjust the magnet assemblies do it is close or
Movement of the person far from the babinet.
7. a kind of clamping device according to claim 6, it is characterised in that：
Wherein, the lifting assembly includes bottom plate, firm banking, the first lifting bottom plate, the second lifting bottom plate, lifting ball wire
Thick stick, pillar group and lifting ball-screw nut,
The bottom plate is placed on the table,
The firm banking is fixedly connected with the bottom plate, has the threaded hole to match with the lifting ball-screw,
The first lifting bottom plate is equipped with the threaded hole to match with the lifting ball-screw,
The second lifting bottom plate be equipped with the threaded hole that matches of lifting ball-screw and with the pillar group phase
The hole matched,
There is the babinet box baseplate, the box baseplate to be fixedly connected with the second lifting bottom plate, the box baseplate
Equipped with the hole to match with the pillar group,
The pillar group passes through the hole in the hole, the second lifting bottom plate that sequentially pass through the box baseplate, one end and described the
One lifting bottom plate is fixedly connected, and the other end is connect with the Boards wall,
The lifting ball-screw passes through the described first threaded hole for lifting bottom plate to be connect with the first lifting base thread,
One end is threadedly coupled by the threaded hole of the firm banking with the firm banking, and the other end lifts bottom by described second
Threaded hole is connect with the second lifting base thread,
The lifting ball-screw nut is threadedly coupled with the lifting ball-screw, is located at the firm banking and described first
Between lifting bottom plate, and it is fixedly connected with the first lifting bottom plate,
It the base and is placed on the bottom plate, is fixedly connected with the bottom plate.
8. a kind of clamping device according to claim 7, it is characterised in that：
Wherein, the height drive component include altitude drive motor pedestal, the altitude drive motor, the first synchronous pulley,
Second synchronous pulley and synchronous belt,
The altitude drive motor pedestal is fixedly connected on the bottom plate,
The altitude drive motor is fixedly connected on the altitude drive motor pedestal, passes through connecting line and described control unit
Connection,
It is described to be risen to adjust the clamping plate by controlling the shown altitude drive motor progress positive and negative rotation by control unit
Or decline,
First synchronous pulley is mounted on the altitude drive motor,
Second synchronous pulley is fixedly mounted on the lifting ball-screw, is located at the lifting ball-screw nut and institute
Between stating firm banking,
One end of the synchronous belt connects first synchronous pulley, and the other end connects second synchronous pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810839377.4A CN108673214A (en) | 2018-07-27 | 2018-07-27 | Magnetic force adjustment unit and clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810839377.4A CN108673214A (en) | 2018-07-27 | 2018-07-27 | Magnetic force adjustment unit and clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108673214A true CN108673214A (en) | 2018-10-19 |
Family
ID=63814842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810839377.4A Withdrawn CN108673214A (en) | 2018-07-27 | 2018-07-27 | Magnetic force adjustment unit and clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108673214A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534690A (en) * | 2018-11-22 | 2019-03-29 | 中国人民解放军火箭军工程大学 | A kind of method that magnetic force toughening inhibits hard brittle material machining damage |
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| JPS5715326B2 (en) * | 1977-07-07 | 1982-03-30 | ||
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| CN203221239U (en) * | 2013-03-11 | 2013-10-02 | 南京宁庆数控机床制造有限公司 | Numerical control slotting machine for adjustable spanner groove |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534690A (en) * | 2018-11-22 | 2019-03-29 | 中国人民解放军火箭军工程大学 | A kind of method that magnetic force toughening inhibits hard brittle material machining damage |
| CN109534690B (en) * | 2018-11-22 | 2021-12-14 | 中国人民解放军火箭军工程大学 | Method for inhibiting processing damage of hard and brittle material through magnetic toughening |
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Application publication date: 20181019 |
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