CN106881618A - A kind of fast tool servo device of two-axle interlocking - Google Patents
A kind of fast tool servo device of two-axle interlocking Download PDFInfo
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- CN106881618A CN106881618A CN201710217569.7A CN201710217569A CN106881618A CN 106881618 A CN106881618 A CN 106881618A CN 201710217569 A CN201710217569 A CN 201710217569A CN 106881618 A CN106881618 A CN 106881618A
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- 239000000919 ceramic Substances 0.000 claims abstract description 132
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- 230000033001 locomotion Effects 0.000 description 35
- 238000006073 displacement reaction Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 9
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- 230000008859 change Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
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Classifications
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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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
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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
- B23Q2705/00—Driving working spindles or feeding members carrying tools or work
- B23Q2705/10—Feeding members carrying tools or work
- B23Q2705/102—Feeding members carrying tools or work for lathes
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention relates to a kind of fast tool servo device of two-axle interlocking, including framework, detachable flexible connecting member, fast tool servo knife rest, first piezoelectric ceramics, second piezoelectric ceramics and tool mount, one end of the detachable flexible connecting member connects the framework, the other end of the detachable flexible connecting member connects the fast tool servo knife rest, fast tool servo knife rest described in first Piezoelectric Ceramic is moved back and forth in the first direction, the tool mount is installed on the fast tool servo knife rest, tool mount described in second Piezoelectric Ceramic is moved back and forth in a second direction.A kind of fast tool servo device of above-mentioned two-axle interlocking disclosure satisfy that high frequency sound, high acceleration and high-precision processing request, can process the freeform optics surface with micro-nano array structure.
Description
Technical field
The present invention relates to fast tool servo engineering device technique field, the fast tool servo device of more particularly to a kind of two-axle interlocking.
Background technology
Optical thin film is important part in backlight of LCD module.Usually, watched using based on fast tool
Take the diamond turning method processing optical film of (Fast Tool Servo, FTS).However, traditional FTS devices are
The linear FTS devices of single shaft, it is impossible to meet the requirement of processing optical free form surface.
The content of the invention
Based on this, it is necessary to for cannot processing optical free form surface problem, there is provided a kind of sharp knife of two-axle interlocking is watched
Clothes are put, and it can be used in processing optical free form surface.
The fast tool servo device of a kind of two-axle interlocking, it is characterised in that including framework, detachable flexible connecting member, sharp knife
Servo saddle, the first piezoelectric ceramics, the second piezoelectric ceramics and tool mount, one end connection of the detachable flexible connecting member
The framework, the other end of the detachable flexible connecting member connects the fast tool servo knife rest, and first piezoelectric ceramics drives
Move the fast tool servo knife rest to move back and forth in the first direction, the tool mount is installed on the fast tool servo knife rest, institute
Tool mount described in stating the second Piezoelectric Ceramic is moved back and forth in a second direction.
A kind of fast tool servo device of above-mentioned two-axle interlocking, tool mount is used to install cutter.First piezoelectric ceramics drives
Dynamic fast tool servo knife rest is moved back and forth in the first direction, so as to drive the cutter being installed on fast tool servo knife rest in the first direction
Move back and forth.Second Piezoelectric Ceramic tool mount is moved back and forth in a second direction, so as to drive be installed on Cutting tool installation manner
Cutter on part is moved back and forth in a second direction.In the presence of the first piezoelectric ceramics and the second piezoelectric ceramics, cutter can be
Moved back and forth on first direction and second direction such that it is able to realize two dimension processing.Freeform optics surface has micro-nano array junctions
Structure.There is the characteristics of piezoelectric ceramics FTS has response frequency high, acceleration high and positioning precision high, flexure hinge mechanism nothing to rub
The characteristics of wiping with displacement resolution high.Therefore, a kind of fast tool servo device of above-mentioned two-axle interlocking disclosure satisfy that high frequency sound, Gao Jia
Speed and high-precision processing request, can process the freeform optics surface with micro-nano array structure.
Wherein in one embodiment, the detachable flexible connecting member includes more than a pair the first flexible hinges, described
The detachably connected framework in one end of the first flexible hinge, the detachably connected institute of the other end of first flexible hinge
Fast tool servo knife rest is stated, the first flexible hinge described in each pair is correspondingly arranged in the both sides of the fast tool servo knife rest respectively.In this way,
Fast tool servo knife rest can be dismantled, and fast tool servo knife rest both sides uniform force, be conducive to fast tool servo knife rest steadily reliable
Ground is moved back and forth in the first direction.
Wherein in one embodiment, the setting direction of first piezoelectric ceramics is parallel with the first direction, described
One end of first piezoelectric ceramics is connected with the framework, and the other end of first piezoelectric ceramics connects with the fast tool servo knife rest
Connect.Framework is fixedly installed in ground, marble countertop or other hard firm surfaces.First piezoelectric ceramics is acted in voltage
Under, the length increase or diminution of the first piezoelectric ceramics, so as to promote move back and forth in the first direction.
Wherein in one embodiment, the fast tool servo knife rest is provided with bridge type flexible hinge and the second flexible hinge, institute
State bridge type flexible hinge along the first direction be provided with bridge type flexible hinge first end and with the bridge type flexible hinge first end
The end of bridge type flexible hinge second being oppositely arranged, the bridge type flexible hinge is provided with bridge type flexible hinge along the second direction
Three ends and the end of bridge type flexible hinge the 4th being oppositely arranged with the end of bridge type flexible hinge the 3rd, the bridge type flexible hinge
Three ends are fixedly installed on the side of the fast tool servo knife rest, one end of second flexible hinge and the fast tool servo knife rest
Opposite side connection, the other end of second flexible hinge be connected with the end of bridge type flexible hinge the 4th, and the cutter is pacified
Piece installing is installed on the end of bridge type flexible hinge the 4th；
A kind of fast tool servo device of above-mentioned two-axle interlocking also includes the first drive rod and the second drive rod, and described first drives
One end of lever is installed on the bridge type flexible hinge first end, and the other end of first drive rod is provided with the first gib head, institute
State the first gib head to be connected with one end of second piezoelectric ceramics, one end of second drive rod is installed on the bridge type flexible
The end of hinge second, the other end of second drive rod is provided with the second gib head, second gib head and second piezoelectric ceramics
The other end connection.When the second piezoelectric ceramics extends, because the first gib head and the second gib head are symmetrically distributed in fast tool servo knife
On frame, so the second piezoelectric ceramics is only by the active force of first direction, without the active force by second direction, it is to avoid be moved through
The coupled motions of journey.
In this way, the second piezoelectric ceramics is under driving voltage effect, the length increase of the second piezoelectric ceramics, so as to promote bridge-type
The end of flexible hinge the 4th moves back and forth in a second direction such that it is able to realize that cutter moves reciprocatingly in a second direction.
Wherein in one embodiment, the bridge type flexible hinge also the first axle bar including equal length, the second hinge
Chain bar, third hinge bar and the 4th hinge-rod, one end of the first axle bar are connected with the bridge type flexible hinge first end,
The other end of the first axle bar and the bridge type flexible hinge three-terminal link, one end of the second hinge bar with it is described
Bridge type flexible hinge first end is connected, and the other end of the second hinge bar is connected with the end of bridge type flexible hinge the 4th, institute
The one end for stating third hinge bar is connected with the end of bridge type flexible hinge second, the other end and the bridge of the third hinge bar
Formula flexible hinge three-terminal link, one end of the 4th hinge-rod is connected with the end of bridge type flexible hinge second, and described
The other end of four hinge-rods is connected with the end of bridge type flexible hinge the 4th, the folder of the first axle bar and the second direction
Angle is more than 45 degree.According to the architectural feature of fast tool servo knife rest, bridge type flexible hinge first end or the end of bridge type flexible hinge second
Movement in a first direction, will drive the movement in a second direction of the end of bridge type flexible hinge the 4th.Put according to lever displacement
Big principle, when the angle of first axle bar and second direction is more than 45 degree, the end of bridge type flexible hinge the 4th is in a second direction
Amount of movement be more than bridge type flexible hinge first end or the end of bridge type flexible hinge second amount of movement in a first direction.In this way,
Second piezoelectric ceramics realizes displacement equations by fast tool servo knife rest, so that a kind of fast tool servo device tool of above-mentioned two-axle interlocking
There is the kinetic characteristic of the big stroke of high frequency.
Wherein in one embodiment, have first between the side of second piezoelectric ceramics and first drive rod
Gap, has the second gap between the side of second piezoelectric ceramics and second drive rod.Due to the second piezoelectric ceramics
And first have the first gap between drive rod, so when the second piezoelectric ceramics is with the generation relative motion of the first drive rod, second
Piezoelectric ceramics and the first drive rod will not produce interference, both be easy to the installation of the second piezoelectric ceramics, turn avoid the second piezoelectricity pottery
Porcelain rubs in high frequency motion process with the first drive rod.Similarly, the installation of the second piezoelectric ceramics had both been easy in the second gap, and
The second piezoelectric ceramics is avoided to be rubbed with the second drive rod in high frequency motion process.
Wherein in one embodiment, first piezoelectric ceramics is coaxially disposed with second piezoelectric ceramics.In this way, by
In the second piezoelectric ceramics it is symmetrically distributed in the middle of fast tool servo knife rest by the first drive rod and the second drive rod, in the first pressure
Under the driving of electroceramics, with fast tool servo knife rest mass motion, therefore the second piezoelectric ceramics is solely subjected to axial force, is not subject to radially
Power, is conducive to improving the life-span of the second piezoelectric ceramics.
Wherein in one embodiment, one end of second piezoelectric ceramics is provided with pressure sensor, and the pressure is passed
The end contact of sensor and second piezoelectric ceramics.Pressure sensor is used to measure the dynamic stress feelings of the second piezoelectric ceramics
Condition, is converted by D/A, facilitates staff to realize error analysis and benefit to a kind of fast tool servo device of above-mentioned two-axle interlocking
Repay.Staff can also know the stressing conditions of the second piezoelectric ceramics by pressure sensor, and for researching and analysing or adjusting
The voltage applied on second piezoelectric ceramics.
Wherein in one embodiment, the other end of second piezoelectric ceramics is connected to described fast by the first fastener
Knife servo saddle.In this way, the second piezoelectric ceramics obtains pretightning force by the first fastener, it is to avoid the second piezoelectric ceramics is being moved through
Fallen off in journey, and can real-time regulation bridge type flexible hinge rigidity.
Wherein in one embodiment, the second direction is vertical with the first direction.In this way, cutter is in a first direction
On motion do not interfere with cutter motion in a second direction.In the first piezoelectric ceramics and the independent action of the second piezoelectric ceramics
Under, cutter is linked in the first direction and a second direction, and a kind of fast tool servo device of above-mentioned two-axle interlocking is realized in 2 freedom
High-frequency reciprocating motion on degree.
Brief description of the drawings
Fig. 1 is the schematic diagram of the fast tool servo device of two-axle interlocking in the embodiment of the present invention；
Fig. 2 is the explosive view of the fast tool servo device of two-axle interlocking in the embodiment of the present invention；
Fig. 3 is the sectional view in Fig. 1 along line A-A.
100th, framework, 110, first direction, 120, second direction, the 130, second fastener, 200, detachable flexible connection
Part, the 210, first flexible hinge, 300, fast tool servo knife rest, the 310, second flexible hinge, 320, bridge type flexible hinge, 321, bridge
Formula flexible hinge first end, 322, the end of bridge type flexible hinge second, 323, the end of bridge type flexible hinge the 3rd, 324, bridge type flexible hinge
The end of chain the 4th, 325, first axle bar, 326, second hinge bar, 327, third hinge bar, the 328, the 4th hinge-rod, 400, first
Piezoelectric ceramics, the 500, second piezoelectric ceramics, the 501, first gap, the 502, second gap, the 503, first fastener, 600, cutter peace
Piece installing, 700, cutter, the 810, first drive rod, the 811, first gib head, the 820, second drive rod, the 821, second gib head, 830, pressure
Force snesor, the 841, the 3rd fastener, the 842, the 4th fastener, the 843, the 5th fastener, 844, L plates, the 845, the 6th fastener.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give better embodiment of the invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described implementation method.On the contrary, the purpose for providing these implementation methods is to make to understand more the disclosure
Plus it is thorough comprehensive.
It should be noted that when element is referred to as " being installed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Conversely, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertical ", " level ", "left", "right" and similar statement are
For illustrative purposes.Heretofore described " first ", " second ", " the 3rd ", " the 4th ", " the 5th " and " the 6th " do not represent tool
The quantity and order of body, are only used for the differentiation of title.
As depicted in figs. 1 and 2, a kind of fast tool servo device of two-axle interlocking, including framework 100, detachable is flexibly connected
Part 200, fast tool servo knife rest 300, the first piezoelectric ceramics 400, the second piezoelectric ceramics 500 and tool mount 600.Detachable is soft
Property connector 200 one end connection framework 100, the other end connection fast tool servo knife rest 300 of detachable flexible connecting member 200.
First piezoelectric ceramics 400 drives fast tool servo knife rest 300 110 to move back and forth in the first direction.Tool mount 600 is installed on soon
Knife servo saddle 300.Second piezoelectric ceramics 500 drives tool mount 600 120 to move back and forth in a second direction.
A kind of fast tool servo device of above-mentioned two-axle interlocking, tool mount 600 is used to install cutter 700.Cutting tool installation manner
Part 600 can be Cutting tool installation manner plate, Cutting tool installation manner block or cutter mounting frame.Cutter 700 is chosen as diamond cutter.Framework 100 is consolidated
Dingan County is loaded on ground, marble countertop or other hard firm surfaces.First piezoelectric ceramics 400 drives fast tool servo knife rest
300 110 move back and forth in the first direction, so as to drive the cutter 700 being installed on fast tool servo knife rest 300 in the first direction
110 move back and forth.Second piezoelectric ceramics 500 drives tool mount 600 120 to move back and forth in a second direction, so as to drive peace
120 moved back and forth in a second direction loaded on the cutter 700 on tool mount 600.In the first piezoelectric ceramics 400 and the second piezoelectricity
Ceramics 500 effect respectively under, cutter 700 can in a first direction 110 and second direction 120 on move back and forth, the phase of cutter 700
Can realize moving or swinging along the high-frequency reciprocating of two kinematic axis simultaneously for workpiece such that it is able to realize two dimension processing.Light
Learning free form surface has micro-nano array structure.Piezoelectric ceramics FTS has the spy that response frequency is high, acceleration is high and positioning precision is high
Point, flexure hinge mechanism has without friction and the characteristics of displacement resolution high.Therefore, the fast tool servo of above-mentioned a kind of two-axle interlocking
Device disclosure satisfy that high frequency sound, high acceleration and high-precision processing request, can process the optics with micro-nano array structure
Free form surface.
Specifically, as shown in figure 1, detachable flexible connecting member 200 includes more than a pair the first flexible hinges 210.First
The detachably connected framework 100 in one end of flexible hinge 210, the detachably connected sharp knife of the other end of the first flexible hinge 210
Servo saddle 300.The first flexible hinge of each pair 210 is correspondingly arranged in the both sides of fast tool servo knife rest 300 respectively.Fast tool servo knife
Frame 300 is detachably connected by the first flexible hinge 210 with framework 100.The both sides uniform force of fast tool servo knife rest 300, has
Stably and reliably 110 moved back and forth in the first direction beneficial to fast tool servo knife rest 300.Additionally, the two ends of the first flexible hinge 210
It is detachably connected with framework 100 and fast tool servo knife rest 300 respectively, so that the first flexible hinge 210 can be by dismounting and change
First flexible hinge 210 of different-thickness.In this way, staff is changed by changing the first flexible hinge 210 of different-thickness
The rigidity of the intrinsic frequency of the first flexible hinge 210 and the first flexible hinge 210.
Specifically, as shown in figure 1, the first flexible hinge 210 is chosen as semicircle angle-style flexible hinge.Semicircle angle-style flexible hinge
One end of chain is installed on framework 100 by the second fastener 130.Second fastener 130 can select hexagonal socket head cap screw.
Specifically, as shown in figure 1, the setting direction of the first piezoelectric ceramics 400 is parallel with first direction 110.First piezoelectricity
The setting direction of ceramics 400 is the length direction of the first piezoelectric ceramics 400 or the installation direction of the first piezoelectric ceramics 400.First
One end of piezoelectric ceramics 400 is connected with framework 100, and the other end of the first piezoelectric ceramics 400 is connected with fast tool servo knife rest 300.
Under voltage effect, the length increase or diminution of the first piezoelectric ceramics 400, so as to promote fast tool servo knife rest 300 along first party
Moved back and forth to 110.
It is appreciated that the setting direction of the first piezoelectric ceramics be also chosen as it is parallel with second direction.First piezoelectric ceramics is pacified
Two ends loaded on fast tool servo knife rest.The other two ends of fast tool servo knife rest are connected with framework and fast tool servo knife rest respectively.Such as
This, under driving voltage effect, the length of the first piezoelectric ceramics increases or reduces the first piezoelectric ceramics in a second direction, drives fast
The two ends movement of knife servo saddle, and then drive the other two ends of fast tool servo knife rest to move in a first direction, so as to realize
Cutter is moved back and forth in the first direction.
On the basis of previous embodiment, as depicted in figs. 1 and 2, fast tool servo knife rest 300 is provided with the second flexible hinge
310 and bridge type flexible hinge 320.Bridge type flexible hinge 320 110 is provided with the He of bridge type flexible hinge first end 321 in the first direction
The second end of bridge type flexible hinge 322 being oppositely arranged with bridge type flexible hinge first end 321.Bridge type flexible hinge 320 is along second
Direction 120 is provided with the end 323 of bridge type flexible hinge the 3rd and the bridge type flexible hinge being oppositely arranged with the end 323 of bridge type flexible hinge the 3rd
The end 324 of chain the 4th.The end 323 of bridge type flexible hinge the 3rd is fixedly installed on the side of fast tool servo knife rest 300.Second flexible hinge
310 one end is connected with the opposite side of fast tool servo knife rest 300, the other end and the bridge type flexible hinge of the second flexible hinge 310
4th end 324 connects.Tool mount 600 is installed on the end 324 of bridge type flexible hinge the 4th.Specifically, tool mount 600 leads to
Cross the 5th fastener 843 and be installed to the end 324 of bridge type flexible hinge the 4th.
As shown in Figure 1 to Figure 3, a kind of fast tool servo device of above-mentioned two-axle interlocking also includes the first drive rod 810 and the
Two drive rods 820.One end of first drive rod 810 is installed on bridge type flexible hinge first end 321.First drive rod 810 it is another
One end is provided with the first gib head 811.First gib head 811 is connected with one end of the second piezoelectric ceramics 500.Specifically, the first gib head 811
It is connected with one end of the second piezoelectric ceramics 500 by the 6th fastener 845.It is soft that one end of second drive rod 820 is installed on bridge-type
Property the second end of hinge 322.The other end of the second drive rod 820 is provided with the second gib head 821.Second gib head 821 and the second piezoelectricity are made pottery
The other end connection of porcelain 500.
When the second piezoelectric ceramics 500 extends, because the first gib head 811 and the second gib head 821 are symmetrically distributed in sharp knife and watch
Take on knife rest 300, so 500 active forces by first direction 110 of the second piezoelectric ceramics, without being made by second direction 120
Firmly, it is to avoid the coupled motions of motion process.Second piezoelectric ceramics 500 voltage effect under, the length of the second piezoelectric ceramics 500
Degree increase, so that the second piezoelectric ceramics 500 applies the first pulling force, the second piezoelectricity by 811 pairs of the first drive rods 810 of the first gib head
Ceramics 500 apply the second pulling force by 821 pairs of the second drive rods 820 of the second gib head.The direction of the first pulling force is from bridge type flexible
Hinge first end 321 points to the second end of bridge type flexible hinge 322.The direction of the second pulling force is from the end of bridge type flexible hinge second
322 point to bridge type flexible hinge first end 321.Therefore, bridge type flexible hinge first end 321 and the end of bridge type flexible hinge second
322 move toward one anothers, so that the end 323 of bridge type flexible hinge the 3rd and the end 324 of bridge type flexible hinge the 4th are located remotely from each other, drive
Tool mount 600 120 does feed motion in a second direction.
In this way, the second piezoelectric ceramics 500 is under voltage effect, the length increase or diminution of the second piezoelectric ceramics 500, so that
The end 324 of bridge type flexible hinge the 4th is promoted 120 to move back and forth in a second direction such that it is able to realize cutter 700 in a second direction
120 move reciprocatingly.Wherein, fast tool servo knife rest 300 is formed in one.
Specifically, as shown in Fig. 2 the first drive rod 810 is installed to bridge type flexible hinge first by the 3rd fastener 841
End 321.Second drive rod 820 is installed to the second end of bridge type flexible hinge 322 by the 4th fastener 842.3rd fastener 841
And/or the 4th fastener 842 be chosen as hexagonal socket head cap screw.First drive rod 810 and the second drive rod 820 are oppositely arranged.First drives
Lever 810 is installed to bridge type flexible hinge 320 from the top of the second piezoelectric ceramics 500.Second drive rod 820 is made pottery from the second piezoelectricity
The bottom of porcelain 500 is installed to bridge type flexible hinge 320.
Specifically, as depicted in figs. 1 and 2, fast tool servo knife rest 320 also the first axle bar 325 including equal length, the
Two hinge bar 326, the hinge-rod 328 of third hinge bar 327 and the 4th.One end of first axle bar 325 and bridge type flexible hinge the
One end 321 connects, and the other end of first axle bar 325 is connected with the end 323 of bridge type flexible hinge the 3rd.Second hinge bar 326
One end is connected with bridge type flexible hinge first end 321, the other end and the end 324 of bridge type flexible hinge the 4th of second hinge bar 326
Connection.One end of third hinge bar 327 is connected with the second end of bridge type flexible hinge 322, the other end and bridge of third hinge bar 327
The end 323 of formula flexible hinge the 3rd connects.One end of 4th hinge-rod 328 is connected with the second end of bridge type flexible hinge 322, the 4th hinge
The other end of chain bar 328 is connected with the end 324 of bridge type flexible hinge the 4th.First axle bar 325 is big with the angle of second direction 120
In 45 degree.
Due to first axle bar 325, second hinge bar 326, third hinge bar 327 and the equal length of the 4th hinge-rod 328,
So bridge type flexible hinge 320 has symmetrical structure, displacement contingency can be eliminated, it is to avoid the second piezoelectric ceramics 500 is to cutter
700 produce the displacement on first direction 110.
According to the architectural feature of bridge type flexible hinge 320, bridge type flexible hinge first end 321 or bridge type flexible hinge second
The movement in a first direction on 110 of end 322, will drive movement of the end 324 of bridge type flexible hinge the 4th in second direction 120.
According to lever displacement equations principle, when the angle of first axle bar 325 and second direction 120 is more than 45 degree, bridge type flexible hinge
Amount of movement of the end 324 of chain the 4th in second direction 120 is more than bridge type flexible hinge first end 321 or bridge type flexible hinge second
The amount of movement in a first direction on 110 of end 322.Such as, when the angle of first axle bar 325 and second direction 120 is 72 degree,
The displacement at the end 324 of bridge type flexible hinge the 4th is 6.16 times of the displacement of bridge type flexible hinge first end 321.Such as
This, the second piezoelectric ceramics 500 realizes displacement equations by bridge type flexible hinge 320, and high frequency big displacement is done so as to meet cutter 700
Motion.
On the basis of previous embodiment, as shown in figure 3, the side of the second piezoelectric ceramics 500 and the first drive rod 810 it
Between have the first gap 501.There is the second gap 502 between the side of the second piezoelectric ceramics 500 and the second drive rod 820.By
There is the first gap 501 between the second piezoelectric ceramics 500 and the first drive rod 810, so the second piezoelectric ceramics 500 and first
When drive rod 810 occurs relative motion, the second piezoelectric ceramics 500 and the first drive rod 810 will not produce interference, both be easy to second
The installation of piezoelectric ceramics 500, turn avoid the second piezoelectric ceramics 500 and is rubbed with the first drive rod 810 in high frequency motion process
Wipe.Similarly, the installation of the second piezoelectric ceramics 500 is easy in the second gap 502, turn avoid the second piezoelectric ceramics 500 and is transported in high frequency
Dynamic process rubs with the second drive rod 820.
Specifically, as shown in Figures 2 and 3, one end of the second piezoelectric ceramics 500 is provided with pressure sensor 830.Pressure is passed
The end contact of the piezoelectric ceramics 500 of sensor 830 and second.Pressure sensor 830 is used to measure the dynamic of the second piezoelectric ceramics 500
Stressing conditions, are converted by D/A, facilitate staff to realize error analysis to a kind of fast tool servo device of above-mentioned two-axle interlocking
And compensation.Staff can also know the stressing conditions of the second piezoelectric ceramics 500 by pressure sensor 830, and for studying
The voltage applied on the second piezoelectric ceramics 500 of analysis or adjustment.
Further, as shown in Figures 2 and 3, the other end of the second piezoelectric ceramics 500 is connected by the first fastener 503
To fast tool servo knife rest 300.In this way, the second piezoelectric ceramics 500 obtains pretightning force by the first fastener 503, it is to avoid the second pressure
Electroceramics 500 falls off in motion process.Additionally, staff is by turning the first fastener 503 such that it is able to change
The pretightning force of the second piezoelectric ceramics 500, pretightning force is further converted to the resistance voltage of the second piezoelectric ceramics 500, realizes second
The gapless motion of piezoelectric ceramics 500.
On the basis of previous embodiment, as shown in figure 1, the first piezoelectric ceramics 400 is coaxial with the second piezoelectric ceramics 500 setting
Put.Because the second piezoelectric ceramics 500 is to be symmetrically distributed in fast tool servo knife by the first drive rod 810 and the second drive rod 820
In the middle of frame 300, under the driving of the first piezoelectric ceramics 400, with the mass motion of fast tool servo knife rest 300, therefore the second piezoelectricity is made pottery
Porcelain 500 is solely subjected to axial force, is not subject to radial load, is conducive to improving the life-span of the second piezoelectric ceramics 500.
In another embodiment of the present invention, the first piezoelectric ceramics 400 can be mutual with the central shaft of the second piezoelectric ceramics 500
Vertically.Such as, the first piezoelectric ceramics 400 110 sets (referring to Fig. 1) in the first direction.And the second piezoelectric ceramics 500 is along second
Direction 120 is set.Specifically, the one end of the second piezoelectric ceramics 500 is connected with fast tool servo knife rest 300, and the second piezoelectric ceramics 500 is another
One end is provided with motion block.Motion block is installed on fast tool servo knife rest 300 by flexible hinge.Tool mount 600 is installed on dynamic
On block.In this way, cutter 700 is under the effect respectively of the first piezoelectric ceramics 400 and the second piezoelectric ceramics 500, cutter 700 also can
In the first direction 110 and second direction 120 independently move reciprocatingly.
Specifically, first direction 110 and second direction 120 are vertical, and motion of the cutter 700 in a first direction on 110 will not
Influence motion of the cutter in second direction 120, cutter 700 independently can do past in first direction 110 and second direction 120
Multiple motion.
Specifically, as shown in figure 1, the first flexible hinge 210 is fillet type flexible hinge.Fillet type flexible hinge or right angle
Type flexible hinge is smaller than the rigidity of hyperbolic-type flexible hinge or parabolic type flexible hinge, flexibility big and is answered with stronger
Change ability.Therefore, the characteristics of a kind of fast tool servo device of above-mentioned two-axle interlocking has high frequency sound.Similarly, bridge type flexible hinge
320 can select perpendicular type bridge type flexible hinge.
Specifically, as shown in Fig. 2 a kind of fast tool servo device of above-mentioned two-axle interlocking also includes L plates 844.L plates 844
Transverse end surface is installed on fast tool servo knife rest 300.The inwall of vertical of L plates 844 is provided with light hole.Light hole is used to measure cutter
700 movement.Specifically, the motor message that laser passes through thang-kng hole measurement cutter 700.A kind of sharp knife of above-mentioned two-axle interlocking is watched
Clothes put the motor message according to cutter 700, obtain work pieces process feedback, and then control the first piezoelectric ceramics 400 or the second pressure
The applied voltage of electroceramics 500, to improve machining accuracy.
Traditional one-dimensional fast tool servo device can only do the at the uniform velocity feed motion of one degree of freedom.A kind of above-mentioned two-axle interlocking
Fast tool servo device moved by two frees degree, can reach advantages below：First, realize point of a knife point with the change of curved surface
And change, passively calculated according to knife tool arc position during processing, and compensate the mismachining tolerance of cutter；Second, above-mentioned one kind
Dynamic and static rigidity of the fast tool servo device of two-axle interlocking in a first direction or in second direction is by mechanical structure and makees device
Output ensure that increases second direction is the active direction of motion, can closed-loop control second direction in process position
Move, equivalent to the active stiffness that increased in second direction；3rd, a kind of fast tool servo device of above-mentioned two-axle interlocking can be with
Lathe is engaged, lathe X to Z-direction on do the high frequency motion consistent with the working frequency of lathe, make it possible to basis
Knife tool arc radius actively changes actual cut point, obtains high-precision free form surface micro-structural.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. the fast tool servo device of a kind of two-axle interlocking, it is characterised in that watched including framework, detachable flexible connecting member, sharp knife
Take knife rest, the first piezoelectric ceramics, the second piezoelectric ceramics and tool mount, one end connection institute of the detachable flexible connecting member
Framework is stated, the other end of the detachable flexible connecting member connects the fast tool servo knife rest, first Piezoelectric Ceramic
The fast tool servo knife rest is moved back and forth in the first direction, and the tool mount is installed on the fast tool servo knife rest, described
Tool mount described in second Piezoelectric Ceramic is moved back and forth in a second direction.
2. the fast tool servo device of two-axle interlocking according to claim 1, it is characterised in that the detachable flexible connection
Part includes more than a pair the first flexible hinges, the detachably connected framework in one end of first flexible hinge, described the
The detachably connected fast tool servo knife rest of the other end of one flexible hinge, the first flexible hinge described in each pair corresponds to set respectively
It is placed in the both sides of the fast tool servo knife rest.
3. the fast tool servo device of two-axle interlocking according to claim 1, it is characterised in that first piezoelectric ceramics
Setting direction is parallel with the first direction, and one end of first piezoelectric ceramics is connected with the framework, first piezoelectricity
The other end of ceramics is connected with the fast tool servo knife rest.
4. the fast tool servo device of two-axle interlocking according to claim 1, it is characterised in that the fast tool servo knife rest sets
There are bridge type flexible hinge and the second flexible hinge, the bridge type flexible hinge is provided with bridge type flexible hinge along the first direction
One end and the end of bridge type flexible hinge second being oppositely arranged with the bridge type flexible hinge first end, the bridge type flexible hinge edge
The second direction is provided with the end of bridge type flexible hinge the 3rd and soft with the bridge-type that the end of bridge type flexible hinge the 3rd is oppositely arranged
The property end of hinge the 4th, the end of bridge type flexible hinge the 3rd is fixedly installed on the side of the fast tool servo knife rest, described second
One end of flexible hinge is connected with the opposite side of the fast tool servo knife rest, the other end and the bridge of second flexible hinge
The end of formula flexible hinge the 4th connects, and the tool mount is installed on the end of bridge type flexible hinge the 4th；
Also include the first drive rod and the second drive rod, one end of first drive rod is installed on the bridge type flexible hinge the
One end, the other end of first drive rod is provided with the first gib head, one end of first gib head and second piezoelectric ceramics
Connection, one end of second drive rod is installed on the end of bridge type flexible hinge second, the other end of second drive rod
The second gib head is provided with, second gib head is connected with the other end of second piezoelectric ceramics.
5. the fast tool servo device of two-axle interlocking according to claim 4, it is characterised in that the bridge type flexible hinge is also
First axle bar, second hinge bar, third hinge bar and the 4th hinge-rod including equal length, the one of the first axle bar
End is connected with the bridge type flexible hinge first end, the other end of the first axle bar and the end of bridge type flexible hinge the 3rd
Connection, one end of the second hinge bar is connected with the bridge type flexible hinge first end, the other end of the second hinge bar
It is connected with the end of bridge type flexible hinge the 4th, one end of the third hinge bar connects with the end of bridge type flexible hinge second
Connect, the other end of the third hinge bar and the bridge type flexible hinge three-terminal link, one end of the 4th hinge-rod with
The end of bridge type flexible hinge second connection, the other end of the 4th hinge-rod connects with the end of bridge type flexible hinge the 4th
Connect, the first axle bar is more than 45 degree with the angle of the second direction.
6. the fast tool servo device of two-axle interlocking according to claim 4, it is characterised in that second piezoelectric ceramics
Between side and first drive rod have the first gap, the side of second piezoelectric ceramics and second drive rod it
Between have the second gap.
7. the fast tool servo device of two-axle interlocking according to claim 4, it is characterised in that first piezoelectric ceramics with
Second piezoelectric ceramics is coaxially disposed.
8. the fast tool servo device of two-axle interlocking according to claim 4, it is characterised in that second piezoelectric ceramics
One end is provided with pressure sensor, the end contact of the pressure sensor and second piezoelectric ceramics.
9. the fast tool servo device of two-axle interlocking according to claim 8, it is characterised in that second piezoelectric ceramics
The other end is connected to the fast tool servo knife rest by the first fastener.
10. the fast tool servo device of the two-axle interlocking according to claim 1~9 any one, it is characterised in that described
Two directions are vertical with the first direction.
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| CN110548908A (en) * | 2019-10-14 | 2019-12-10 | 吉林大学 | gantry type coarse-fine composite five-axis precision machine tool and machining method |
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