CN1153320A - Method and apparatus for engraving using magnetostrictive actuator - Google Patents
Method and apparatus for engraving using magnetostrictive actuator Download PDFInfo
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- CN1153320A CN1153320A CN95120373A CN95120373A CN1153320A CN 1153320 A CN1153320 A CN 1153320A CN 95120373 A CN95120373 A CN 95120373A CN 95120373 A CN95120373 A CN 95120373A CN 1153320 A CN1153320 A CN 1153320A
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Abstract
An engraving head apparatus and method for engrving a gravure cylinder. The engraving head apparatus including a magnetostrictive actuator formed from TERFENOL-D which elongatably drives a diamond-tipped stylus arm in a reciprocal manner in response to a varying magnetic field created by a bias coil and a drive coil. The bias coil establishes a DC biasing magnetic field which causes an initial expansion of the actuator to approximately one-half the total linear expansion limit of the actuator. The drive coil is concentrically interposed between the actuator and the bias coil and modulates the magnetic field intensity established by the bias coil to cause additional expansion and contraction of the actuator about the initial expansion point.
Description
The present invention relates to a kind of platemaking machine, particularly in laminator the one making sheet headstock is arranged, it comprises a magnetic deformation actuator, in order to according to field drives cutting tool or contact pilotage.
Some film mechanical machines in past comprise head at one or more quarter, carve head and have a contact pilotage of making of diamond, and this contact pilotage is installed on the arm that stretches out from the actuator shaft of twisting vibration.One sine wave exciting signal is added on a pair of reverse electromagnet, and actuator shaft is rotated with the maximum frequency between 3-5KHz, rotates the radian maximum and is about 0.25 °.When twisting vibration, brake axle drives the copper coatings that diamond stylus entered or stretched out the photogravure cylinder, thereby forms or dig out aperture on the face of cylinder.The length of photogravure cylinder is about 6 inches-15 feet, and diameter is the 4-26 inch.Generally, on the photogravure cylinder, have 20 per square inch, 000-50,000 aperture.
When quarter of the present invention, head was worked under the frequency of about 3.2KHz, can carve 3200 holes p.s. on the surface of photogravure cylinder.Therefore, carve the required time of cylinder and general approximately wanted more than one hour.This, operating frequency of head was subjected to being used to activating the restriction of weight of the magnetic material of contact pilotage again at quarter.In U.S. Pat 3,964,382 and U.S 4,357,633 in, to existing type quarter head and the example of contact pilotage driver description is all arranged.
What therefore, we needed is to carve head can to carve the higher frequency work of frequency of head than the present invention, be beneficial to thus to reduce and carve the time that the photogravure cylinder is required when diamond stylus be moved into or shift out the copper coatings of photogravure cylinder.
So, fundamental purpose of the present invention be to provide a kind of a certain be convenient to reduce cut blocks for printing can make diamond stylus move into or shift out the head at quarter of the cylindrical surface of photogravure cylinder under the frequency of required time.
Second purpose of the present invention provides a kind of magnetostriction element that has, so that at the head at quarter of the frequency lower swing contact pilotage that exceeds 5KHz even 10KHz.
Thereby providing a kind of the utilization, the 3rd purpose of the present invention can be compressed the magnetostriction element with many strain curve features or the head at quarter of actuator.
The 4th purpose of the present invention is to provide a kind of easy relatively in design, the method and apparatus of lower cost in the manufacturing.
According to one aspect of the present invention, the laminator that being used to of being provided carved the gravure cylinder has the face of cutting blocks for printing.This platemaking machine comprises a making sheet fuselage, a headstock and a tailstock that is slidably disposed on the fuselage, and wherein, the headstock and tailstock cooperatively interact and the photogravure cylinder rotatably are supported on the plate-making position of platemaking machine; Also comprise a head at quarter that is placed in the plate-making position on the fuselage, make and carve head and on plate-making face, make a plate.Carve head and comprise a shell, one is used for the engraving contact pilotage scribed on the cylinder of the plate-making position of being fixed in platemaking machine, a magnetostriction element that is positioned at shell and operatively is coupled with the contact pilotage of cutting blocks for printing, and an excitation magnetostriction element is so that the stylus vibration of cutting blocks for printing, thereby cuts out the driver of the pattern site that designs on cylinder surface.
According to another aspect of the present invention, platemaking machine also comprises the contact pilotage driver that is used to drive contact pilotage, this driver comprises the magnetostriction element and the driver that is used to encourage magnetostriction element that are coupled with contact pilotage again, it makes stylus vibration, to cut out the designed with patterns site on the cylinder surface that is fixed in platemaking machine plate-making position.
Also have on the one hand, the present invention proposes a kind of method that is used on the cylinder that is fixed in platemaking machine rotatably, scribing predetermined pattern.This method may further comprise the steps, though the coupling of contact pilotage and magnetostriction element, make contact pilotage by with the approximation relation location of cylinder, make the cylinder rotation, and excitation magnetostriction element makes the contact pilotage swing, thereby cut out the site of predetermined pattern on cylinder.
In addition, the invention allows for a kind of head at quarter that is used for engraver.This, head comprised a shell at quarter, one is used for the contact pilotage scribed on the cylinder of the plate-making position of being fixed in platemaking machine, a magnetostriction element that is positioned at shell and uses with the contact pilotage coupling, and one be used to encourage magnetostriction element causing the contact pilotage swing of cutting blocks for printing, thereby scribe the driver of predetermined pattern on the surface of cylinder.
On the other hand, the present invention also provides a kind of method of making a plate of being used on the photogravure cylinder.Its step comprises, the photogravure cylinder rotatably is fixed on the plate-making position of platemaking machine, contact pilotage is located by the relation that the making sheet face with the photogravure cylinder is similar to, contact pilotage is connected with magnetostriction element, and the excitation magnetostriction element makes it scribe the pattern site that designs on the photogravure cylinder surface with the vibration contact pilotage when cylinder rotates.
Above-mentioned purpose of the present invention and advantage will be better understood from the following description to embodiment, accompanying drawing and appended claim.
Fig. 1 is the skeleton view of the adoptable typical gravure plate-making machine of the present invention;
Fig. 2 is that the present invention makes a plate and carves the skeleton view of head;
Fig. 3 is that the present invention makes a plate and carves the exploded view of head;
Fig. 4 is the side view that head is carved in plate-making shown in Figure 2;
Fig. 5 is that the sectional view of head along Fig. 2 center line 5-5 carved in plate-making;
Fig. 6 is that the longitdinal cross-section diagram of head along Fig. 2 center line 6-6 carved in plate-making;
Fig. 7 a-7d is the partial sectional view of the magnetic deformation actuator of working in alternating magnetic field;
Fig. 8 is the length of expression magnetic deformation actuator or the curve map of strain magnetic field intensity;
Fig. 9 is the length of the magnetic deformation actuator under the various force value of expression or the curve map of strain magnetic field intensity;
Figure 10 is a block scheme of typically carving head drive circuit;
Figure 11 is the AC component signal, and DC component signal and being used to encourages the synoptic diagram of the drive signal of magnetostriction element.
What Fig. 1 represented is the typical plate making machinery or the platemaking machine 10 of for example photogravure platemaking machine.Platemaking machine 10 can have one around slidably Safety shell structure, for convenience of explanation, not shown in the drawings.Platemaking machine 10 comprises a framework or fuselage 12.The position of cutting blocks for printing on the fuselage includes the headstock 14 and the tailstock 16 settled slidably, and they are supporting cylinder 24 jointly.The length of cylinder 24 and diameter all can change.The headstock 14 and tailstock 16 comprise drivable back shaft 14a and 16a respectively, and they are back-up roller 24 rotatably, and cylinder 24 and drum driven motor (not shown) are coupled.
A Programmable Logic Controller 38 is being controlled the running of platemaking machine 10, and is controlling and carving 30 and be used for the operation of the CD-ROM drive motor (not shown) of the headstock 14, tailstock 16, cylinder 24 and support 32.Carving head driving loop 34 can be combined into one with controller 38, also can separate as shown in Figure 1.The U.S. Patent application series U.S.08/022.127 that the embodiment of controller submitted on February 25th, 1993, the United States Patent (USP) 5 of now having authorized, 424, disclosure was arranged in 845, this patented claim transfers the assignee of present patent application, therefore, the content and the file as a comparison that contain above-mentioned patent in the present patent application file.
Described among Fig. 2-6 quarter of the present invention 30 more detailedly.Carve 30 and comprise a shell 39 (Fig. 6), shell 39 has a longitudinal axis 42 (as Fig. 6) and a housing 40, an end wall body 44 that is fixed in an end 40a place of housing 40, a supporting roll cylindrical shell 46 that is fixed in the other end 40b place of housing 40, and one be fixed on the supporting roll cylindrical shell 46, away from the contact pilotage arm body 48 of housing 40.
Referring to Fig. 5, housing 40 comprises an inner passage or cavity 50 especially, and a detent or magnetostriction element 52 are housed in it.In this embodiment, detent 52 is set at the center of housing 40 usually and extends along the longitudinal axis 42 of housing 40.Detent 52 is generally cylindrical, and is made by the magnetic control prepared material, and the magnetostriction expansion coefficient is at least 500ppm.A kind of suitable magnetostriction materials are the incorgruous compensator alloy Tb of a kind of magnetic
xDY
1-xFe
2, commercial general designation TERFENOL-D
TM, it comprises element terbium (Tb), dysprosium (Dy) and iron (Fe).Terbium and dysprosium all are the lanthanide series of high-magnetostriction.TERFENOL-D
TMCan be 306 South 16th Street from the address, Ames, the Etrema manufacturing company of Iowa 50010 buys.
In the present embodiment, actuator 52 is by the normally elongated TERFENOL-D of seven longitudinal extensions
TMThin slice is made.Every thickness is about 0.070 inch, and they stack together to form the cylindrical rod that diameter is about 0.5 inch, is about 3 inches, and its viewgraph of cross-section as shown in Figure 5.Actuator 52 has one to be about the basic frequency of 4KHz and the third harmonic that frequency is about 12KHz.In an illustrated embodiment, third harmonic is the frequency of operation at the following quarter that also will describe 30.Best, the length of actuator 52 is equal to or less than about 6 inches, and diameter is equal to or less than 1 inch.Actuator 52 can be made with the actuator (as octagon, hexagon, rectangle etc.) of the difformity and the size of different-thickness, diameter, shape and/or length.
The Magnetostrictive Properties of actuator 52 should be like this, and when adding magnetic field, the little magnetic domain in actuator 52 is rotated, and aims at the magnetic field that is applied, and this causes internal strain in actuator 52.This internal strain will cause actuator 52 along the magnetic direction per inch that is applied 0.001 inch stretching, extension to be arranged approximately.Length as shown in Figure 8 or strain-magnetic field intensity curve.Strain S equals Δ L/L, and L is the length of detent herein, and magnetic field intensity H equals nI, herein I be by the n circle around the electric current of coil, loop length is Lc, n=N/Lc.Notice that when the FR that applies, interior magnetic domain is also with conversion direction, but still consistent with outer magnetic field direction, also causes the increase of detent 52 length, shown in curve among Fig. 8.When electric current when both direction all increases, magnetic field intensity increases, the length of actuator 52 is increased to saturation value, no longer is stretched, because interior magnetic domain must match with surrounding magnetic field.
As shown in the figure, the drive coil 54 (Fig. 3) that vertically distributes is operationally around actuator 52 location.Vertically the bias winding 56 that distributes is arranged around drive coil 54, and separates radially outwardly with coil 54.Drive coil 54 and bias winding 56 serve as the driver of detent 52 jointly, but will be appreciated that, if desired, single coil also can be as the driver of magnetostriction element 52, bias winding 56 is used for setting up the Dc bias field Ho (Fig. 8) around actuator 52, makes actuator 52 be biased into biased active length Lbias (shown in Fig. 7 c and 8) from original reduction length Lc (shown in Fig. 7 b and 8).In this embodiment, length L bias approximately is half of the lineal measure that always can uphold of actuator 52.Perhaps available permanent magnet (not shown) is set up Dc bias field Ho, to substitute bias winding 56.
After actuator 52 biased coil 56 biasings reach active length Lbias, the synthetic drive signal 116 (Figure 11) that hereinafter also will describe is added on the drive coil 54 magnetic field intensity that modulation bias winding 56 produces.In this, when forward current was flowed through drive coil 54, consequent magnetic field added the magnetic field H 1 that Dc bias produces, and made actuator 52 obtain in addition extending, and length is (shown in Fig. 7 d and 8) from Lbias to Lin.When inverse current is flowed through drive coil 54, the magnetic field H that is produced by Dc bias will be offset in the magnetic field of electric current generation thus
2(Fig. 8), make the length of actuator 52 be retracted to Lout, the length of a clean actuator 52 (shown in Fig. 7 e and 8) from Lbias or Lin.What therefore, set up an axial location is the vibration of Lin to Lout with respect to length L bias oscillating region.
In described embodiment, the bias winding 56 of about 7 amperes electric current by approximately being wound with 300 circles provides 2100AT (ampere-circle) to produce the Dc bias field, makes the initial stretching, extension of detent 52 beginnings, about 50 microns, reaches active length Lbias.Then, He Cheng drive signal 116 causes that detent 52 alternately stretches and shrink about 25 microns from active length Lbias, reaches Lin and lout respectively.Wherein, clean working range is about 50 microns.
The steel lamination 55 (Fig. 6) of several pieces longitudinal extensions is stacked and placed on the bias winding 56.Lamination 55 is convenient to reduce the flow of the eddy current in the steel shell 40, and the flux loop that produces when electric current is flowed through drive coil and bias winding 54,56 is provided.The guard ring 58 of a pair of vertical separation is placed between the inner radial surface of steel lamination 55 and housing 40.
A refrigerant inlet 60 and a refrigerant outlet 62 that extends through housing 40 makes liquid refrigerant be arrived cavity 50 by pumping.More particularly, refrigerating fluid flows between actuator 52 and drive coil 54 and between drive coil 54 and the bias winding 56 to alleviate in the work because viscous flow and eddy current and the heating that produces in actuator 52.Guard circle 58 can prevent that cold-producing medium from flowing through in housing 40 and bias winding 56, require minimum heat dissipation at there.The refrigerant that refrigerant is preferably silica-based with non-conductive performance.
The present invention also comprises compression set or compressor reducer, with axial compressing detent 52.In this, with the traditional method of supporting roll cylindrical shell 46 usefulness, as screw, bolt or analog are fixed on the housing 40.Supporting roll cylindrical shell 46 comprises a center cavity 64, and it is connected with cavity 50.The piston rod of one longitudinal extension or axle 66 center and are general and actuator 52 is coaxial, make its axially driving actuator 52.Piston rod 66 have one in aggregates and with its binding at the piston 68 of 64 li axially-movables of center cavity.Loop seal or O shape ring 70 are looped around around the piston rod 68, with inner radial wall 72 Elastic Contact that form cavity 64.Second loop seal or O shape ring 82 be looped around piston rod 66 around and with inwall 84 Elastic Contact that form center pit 78, with confining pressure chamber 74 effectively, and chamber 74 is limited by piston 68 and inwall 72.76 extend through supporting roll cylindrical shells 46 are gone into/exported to a pressure, with provide from the source of supply (not shown) the liquid of a large amount of pressurizations or preferably the medium of gaseous state to chamber 74.
Notice the traditional method of contact pilotage arm 48 usefulness, as screw, bolt or analog are fixed on the supporting roll cylindrical shell 46.Piston rod 66 vertically passes center pit 78, is threadedly engaged with the cantilever 80 that extends transverse to piston rod 66.
When chamber 74 was pressurized, piston 68 produced and keeps the pressure to actuator 52.This is beneficial to and prevents that actuator 52 from working in stress state.This also can make the user select the best or the desirable working curve of actuator 52.For undesirable pressure, suitable tension force can cause that actuator 52 is along the fracture of its length direction at the node place.Avoid the possibility that ruptures in order to be beneficial to, by modulated gaseous medium that will about 500psi, put into 74 li in chamber as air, make detent 52 be in pressured state, and this can make piston 68 that about 375 pounds pressure is applied on the actuator 52 (to suppose that piston area is about 0.75 square inch).Therefore actuator 52 (a) is retracted to pressure-bearing length L c (shown in Fig. 7 b and 8) as Fig. 7 from the static length L of no-bias.
About the working curve of the actuator 52 of selecting the best or hope, the gang that provides among Fig. 9 or many length or strain-magnetic field intensity working curve are about the situation of actuator 52 under various force value.Curve (g) illustrates is the actuator operating characteristic during a special pressure on imposing on actuator 52.The operating characteristic of the detent 52 of curve (a) representative when little pressure imposes on actuator 52.It should be noted that when pressure when curve (a) increases to curve (g), working range (illustrating with double-head arrow A among Fig. 9) becomes and can be said to be linear.This makes can select a hope or best linear work curve, with at desirable linear working range control actuator 52.
In described embodiment, can utilize the expansion that makes actuator 52 to over big amplifier or multiplying arrangement.A suitable amplifier can comprise cantilever or amplifier arm 80 (Fig. 6), its an end 80a be fixed in rigidly one usually with the tangent plane of axle 42 on directed base plate 86 (as Fig. 6).Base plate 86 comprises the first and second bendable spring plate bodys 88 and 90, and they are parallel with the longitudinal axis 42 respectively.Spring plate body 88 and 90 bendings make cantilever 80 rotate around base plate 86 along the direction (Fig. 6) of double-head arrow B, stop relative motion or " recoil " between the end 80a of base plate 86 and cantilever 80 simultaneously.Just, an end 80a of base plate 86 and cantilever 80 forms the support of a rigidity, does not move along the direction of double-head arrow C shown in Figure 6.
Contact pilotage arm 92 utilizes traditional stationary installation to be fixed on the cantilever 80, and adamas icking tool or cutting stylus 95 are supported by the round end 92 of contact pilotage arm 92.Though do not have diagram, can contain many open-works on the contact pilotage arm 92 to alleviate the weight of contact pilotage arm 92.These holes also help to improve the oscillation frequency of contact pilotage arm 92, make it surpass to carve a frequency of operation of 30, to prevent the phase mutual interference in the work.In addition, cantilever 80 and contact pilotage arm 92 can connect to complete " one a " structure, and it is fixed in rotationally on the base plate 86 and in identical or similar mode and supports cutting stylus 95.Guide plate 81 is fixed on the contact pilotage arm main body 48, is in accurate position as can be known with respect to vibration contact pilotage 95.When guide plate 81 contact cylinders 24, cutting stylus 95 from the position oscillation of cutting blocks for printing that just contacts cylinder 24 to shrink the position of returning from cylinder 24.
It should be understood that piston rod 66, cantilever 80 and contact pilotage arm 92 are common constitutes mechanical amplifier, so that the magnification ratio or the gain of about 2: 1 or 3: 1 to be provided.Therefore, if actuator 52 at L
1And L
2Between have in 20 microns the length one two to do intervally, then mechanical amplifier will make diamond stylus 95 towards the copper coatings 28 of cylinder 24 one 60 microns displacement be arranged, to implement engraving as described below.
Perhaps, amplifieroperation can be undertaken by other device.For example amplifier or multiplying arrangement can comprise an amplifier hydraulic pressure or pneumatic, and this class A amplifier A comprises a chamber of containing two barrier films of separating (not shown), form a liquid and inject groove or bubble between two barrier films.The enlargement factor of amplifier is relevant with the different ratios of diaphragm diameter.For reaching the purpose of amplification, large diameter barrier film can abut against actuator 52 or place barrier film and actuator 52 between compression set on, and the barrier film of minor diameter can directly drive contact pilotage 95 or nestle up contact pilotage arm 92.In operation, the small axially-movable of actuator 52 relative major diameter barrier films will cause the bigger axially-movable of less barrier film thereby the axially-movable of having amplified contact pilotage.
Notice the traditional method of end wall 44 usefulness, as screw, bolt or other similar method are fixed on the housing 40.Set screw 94 is by being positioned at the screwed hole of centre on the end wall 44, and axially rests on the actuator 52.End wall 44 and set screw 94 constitute the entity of a rigidity at work, are connected an end of actuator 52.In addition, screw 94 can be used for the axial location of control actuator 52, more particularly, when carving 30 when being placed on the support 32, is used to regulate the radial distance that diamond stylus 95 is separated with cylinder 24.Set nut 96 is fixed to set screw on the end wall 44.
Figure 10 has described the block scheme that head at quarter shown in Figure 1 drives loop 34.Loop 34 comprises a bias winding loop 34a and a drive coil loop 34b.For bias winding loop 34a, big telefault 102 is connected, the influence of the mutual inductance effect between resistance drive coil 54 and the bias winding 56 with direct supply 104 and bias winding 56.Mutual inductance effect meeting produces harmful induction current in the 34a of bias winding loop, make if not invalid driving loop 34b to become invalid loop.Drive coil 54 is positioned in the bias winding 56, and makes and make it less than bias winding 56, makes the mutual inductance of drive coil 54 reduce to minimum thus.
For drive coil loop 34b, DC vision signal or picture signal 10 (Figure 10 and 11) that representative desires to be engraved in the image on the cylinder 24 are added on one or more rejection filters 108 and 110.Rejection filter 108,110 stop fundamental frequency and/or other high-frequency signal, and the signal of these frequencies (is a housing 40 in the middle of can being braked device 52 an introduction assembly at various quarters, end wall 44, compression barrel 46 and contact pilotage arm body 48, piston rod 66, cantilever 80, contact pilotage arms 92 etc.), the vibration of response is done in these unit responses with the actuator 52 of its third harmonic frequencies work.United States Patent (USP) U.S.4 has disclosed the technology that quarter, an assembly carried out damping that the response detent is vibrated in 450,486, and this technology is at this file and constitute the part of this instructions as a comparison.
After regulating by wave filter 108 and 110, the DC vision signal is added on voltage-current amplifier 112, have the synthetic drive signal 116 of AC and DC composition with 114 one of the common generation of constant frequency ac input signal.Ac input signal 114 with exchange the loop (not shown) of vision signal 106 in controller 38 in produce.
Be in operation, controller 38 guiding carves 30, impels diamond stylus arm 92 to contact with cylinder 24, carves pattern or a series of controlled aperture of the degree of depth that is positioned at the surround orbit (not shown) on the cylinder copper coatings 28 of setting.The linear movement of support 32 produces the circular orbit of a series of axial separation, the image that the aperture representative in it is carved into.
The AC compounent 114 of drive signal 116 causes contact pilotage arm 92, and especially contact pilotage 95 is done sinusoidal vibration with respect to cylinder 24 under the frequency of operation of about 10-15KHz.Regulate the rotational speed of drum driven motor 26 so that in each revolution of cylinder 24, produce the track of cutting blocks for printing that the odd number wavelength is arranged.
Referring to Figure 11, the direct current video component 106 of synthetic drive signal 116 utilizes many discrete DC voltage level to come to provide signal to the action of contact pilotage 95.For example, direct current video component 106 comprises the video level 122 of white video level 118, one black video level 120 and a high brightness.When white video level 118 was rendered as combination drive signal 116, actuator 52 is retracted to length L out and diamond stylus 95 disengages with cylinder surface 28, shown in stylus position 124.
When direct current video component 106 when white video level 118 changes to black video level 120, actuator 52 is expanded reaches length L in and diamond stylus 95 moves on to the place of locating that contacts with cylinder surface 28 shown in stylus position 126.When the direct current video component was converted to high brightness video level 122, actuator expanded a certain length reach between Lin and the Lout, and diamond stylus 95 is in the vibration of stylus position 128 places, contacted with the facet of cylinder 24 or broke away from.This vibration causes platemaking machine 10 to cut out predefined pattern then again.
Though the present invention, is to be understood that the present invention by above-mentioned preferred embodiment is described and not only is confined to the device of these forms, can change without departing from the scope of the invention, scope of invention is existing the qualification in appended claims.
For example, change is introduced bias current by the bias winding 56 that separates, replace with magnet or by the Dc bias electric current is added to make on the drive coil 54 bias current by with the series inductance of combination drive signal 116 parallel placements on, combination drive signal 116 is added on the drive coil 54 by series capacitance.Described coil can be used for passing a year bias current, DC current and the video signal that comes from signal circuit.
In addition, the belluille packing ring also can be used to provide the linearity pressurization of actuator 52, to replace gas or liquid supporting roll cylindrical shell 46.
Moreover, in order to increase the oscillation frequency of carving a shell 39, to surpass the operating frequency of actuator 52, the rigidity of shell 39 can by the welding or with housing 40, end wall 44, supporting roll cylindrical shell 46 and contact pilotage arm body 48 closely are fixed together, and method that need not be traditional, connecting as above-mentioned screw, bolt or other similar fixing means increases.In addition, oscillation frequency also can improve by the part or all of complete shell that forms the above-mentioned parts 40,44,46,48 of packing into.
For some type of the operation of cutting blocks for printing, actuator 52 has enough elongations, directly to be driven contact pilotage 95 and not utilized amplifier by actuator.Therefore, contact pilotage 95 can be located substantially on the line with actuator 52.
In addition, actuator 52 can be with respect to big rigidity or fixing object work, and need not work with respect to shell 39 and especially end wall 44.
Claims (61)
1. platemaking machine that is used to scribe gravure cylinder with the face of cutting blocks for printing, it comprises: a plate-making fuselage;
Device is at a described engraver headstock and tailstock on one's body, and the described headstock and tailstock are supported on described gravure cylinder rotation the position of scribing of above-mentioned platemaking machine jointly;
One is placed in the head at quarter that is positioned on the described described fuselage of scribing the position, makes this head can scribe the above-mentioned face of scribing at quarter;
Described quarter, head comprised: a shell;
The contact pilotage of scribing that is used to scribe the cylinder that is positioned at above-mentioned platemaking machine plate-making position;
A magnetostriction element that is positioned at housing and is coupled with the above-mentioned contact pilotage of cutting blocks for printing; With
One is used to encourage described magnetostriction element, causes the contact vibration, to carve the driver of the aperture that is predetermined pattern in described cylinder facet.
2. platemaking machine according to claim 1, it is characterized in that, described magnetostriction element comprises many strain curves, and described platemaking machine comprises that also one is used to compress the compressor reducer of described magnetostriction element, to obtain a curve in the described strain curve at least.
3. platemaking machine according to claim 1 is characterized in that the magnetostriction coefficient of described magnetostriction element is at least 500p.p.m.
4. platemaking machine according to claim 1 is characterized in that described magnetostriction element comprises Tb
xDY
1-xFe
2
5. platemaking machine according to claim 1 is characterized in that, described driver comprises the coil that at least one and described magnetostriction element operatively are associated.
6. platemaking machine according to claim 5 is characterized in that described magnetostriction element has many stress curves, and above-mentioned head at quarter also comprises one and is used to compress above-mentioned magnetostriction element to produce the compressor reducer of at least one above-mentioned stress curve.
7. platemaking machine according to claim 6 is characterized in that described magnetostriction element comprises Tb
xDY
1-xFe
2
8. platemaking machine according to claim 1 is characterized in that the xsect of described magnetostriction element is cylindrical usually.
9. platemaking machine according to claim 1 is characterized in that, described magnetostriction element normally elongated with columniform, its length is less than 6 inches, diameter is less than 1 inch.
10. platemaking machine according to claim 1 is characterized in that, it also comprises an amplifier between above-mentioned contact pilotage and magnetostriction element, stretches with the expansion of amplifying magnetostriction element.
11. platemaking machine according to claim 10 is characterized in that, described amplifier is stretched the expansion of magnetostriction element with 2: 1 ratio and is amplified.
12. platemaking machine according to claim 10 is characterized in that, described amplifier comprises an amplifier arm that is coupled with described magnetostriction element and contact pilotage.
13. platemaking machine according to claim 1 is characterized in that, described magnetostriction element in fact with above-mentioned contact pilotage linearly shape arrange.
14. a contact pilotage driver that is used to drive contact pilotage in platemaking machine, it comprises a magnetostriction element that is coupled with contact pilotage; One is used to encourage described magnetostriction element with the initiation stylus vibration, thereby carves the driver of the aperture that is predetermined pattern on the cylinder of the plate-making position that is positioned at described platemaking machine.
15. contact pilotage driver according to claim 14, it is characterized in that, described magnetostriction element has many strain curves, and above-mentioned contact pilotage driver comprises that also is used to compress a described magnetostriction element, so that it produces the compressor reducer of an above-mentioned strain curve at least.
16. contact pilotage driver according to claim 14 is characterized in that the magnetostriction coefficient of described magnetostriction element is at least 500p.p.m.
17. contact pilotage driver according to claim 14 is characterized in that described magnetostriction element comprises Tb
xDY
1-xFe
2
18. contact pilotage driver according to claim 14 is characterized in that, comprise at least in the described driver one with the operatively related coil of above-mentioned magnetostriction element.
19. contact pilotage driver according to claim 18, it is characterized in that, described magnetostriction element comprises many strain curves, and above-mentioned contact pilotage driver comprises that also is used to compress a described magnetostriction element, makes it produce the compressor reducer of an above-mentioned strain curve at least.
20. contact pilotage driver according to claim 19 is characterized in that, contains Tb in the above-mentioned magnetostriction element
xDY
1-xFe
2
21. want 14 to ask described contact pilotage driver according to right, it is characterized in that the xsect of described magnetostriction element is cylindrical usually.
22. contact pilotage driver according to claim 14 is characterized in that, described magnetostriction element normally elongated with columniform, its length is no more than 6 inches, diameter is no more than 1 inch.
23. contact pilotage driver according to claim 14 is characterized in that, also comprises an amplifier, it is positioned between above-mentioned contact pilotage and the magnetostriction element, to amplify the extension of magnetostriction element.
24. contact pilotage driver according to claim 23 is characterized in that, described amplifier amplified above-mentioned elongation with 2: 1 ratio.
25. contact pilotage driver according to claim 23 is characterized in that, described amplifier comprise one with the amplifier arm of described magnetostriction element and contact pilotage coupling.
26. contact pilotage driver according to claim 14 is characterized in that, described magnetostriction element is a straight line with above-mentioned contact pilotage in fact and distributes.
27. a method that is used for scribing the aperture of predetermined pattern on the cylinder that is fixed in rotatably on the platemaking machine, its step comprises: make the coupling of a contact pilotage and a magnetostriction element; Make contact pilotage concern setting with what become to be similar to cylinder; Rotate described cylinder and the above-mentioned magnetostriction element of excitation, make described contact pilotage swing, on cylinder, to scribe the aperture that is predetermined pattern.
28. method according to claim 27 is characterized in that, the step of described excitation also comprises makes at least one coil location around described magnetostriction element; Encourage an aforementioned at least coil.
29. method according to claim 27 is characterized in that, described magnetostriction element has many strain curves; Said method comprises that also the compression magnetostriction element is to produce in the above-mentioned strain curve.
30. method according to claim 27 is characterized in that, described method also comprises described magnetostriction element is biased into bias state.
31. method according to claim 30 is characterized in that, described method comprises that also excitation is in the described magnetostriction element of bias state, with the vibration contact pilotage.
32. method according to claim 27 is characterized in that, described method also comprises amplifies predetermined extension degree with the extension of described magnetostriction element.
33. method according to claim 32 is characterized in that, described predetermined extension ratio is 2: 1.
34. method according to claim 27 is characterized in that, this method also comprises described contact pilotage is placed the place that becomes a line with a magnetostriction element.
35. method according to claim 27 is characterized in that, this method also comprises the magnetostriction element that adopts magnetostriction coefficient to be roughly 500p.p.m at least.
36. method according to claim 35 is characterized in that, described magnetostriction element includes Tb
xDY
1-xFe
2
37. method according to claim 27 is characterized in that, described magnetostriction element includes Tb
xDY
1-xFe
2
38. a head at quarter that is used for platemaking machine, it comprises a shell; One is used for the contact pilotage of cutting blocks for printing of cutting blocks for printing on the cylinder of the plate-making position of being fixed in described platemaking machine; A magnetostriction element that is positioned at shell and operatively is coupled with above-mentioned contact pilotage; One is used to encourage above-mentioned magnetostriction element, causing the cutting stylus vibration, thereby scribes the driver of the aperture that is predetermined pattern at above-mentioned cylinder surface.
39., it is characterized in that described magnetostriction element has many strain curves according to claim 38 head at described quarter; Comprise that also one is used for compressing described magnetostriction element so that it produces one compressor reducer of above-mentioned strain curve at least.
40., it is characterized in that the magnetostriction coefficient of above-mentioned magnetostriction element is at least at 500p.p.m according to claim 38 head at described quarter.
41. according to claim 38 head at described quarter, it is characterized in that, contain Tb in the above-mentioned magnetostriction element
xDY
1-xFe
2
42., it is characterized in that above-mentioned driver comprises a coil of operatively uniting with above-mentioned magnetostriction element at least according to claim 38 head at described quarter.
43. according to claim 42 head at described quarter, it is characterized in that described magnetostriction element has many strain curves, this, head comprised that also is used to compress a described magnetostriction element at quarter, so that it produces one compressor reducer in the above-mentioned strain curve at least.
44. according to claim 43 head at described quarter, it is characterized in that, contain Tb in the described magnetostriction element
xDY
1-xF
2
45., it is characterized in that the xsect of described magnetostriction element is cylindrical usually according to claim 38 head at described quarter.
46. according to claim 38 head at described quarter, it is characterized in that, described magnetostriction element normally elongated and cylindrical, its length is no more than 6 inches, diameter is no more than 1 inch.
47., comprise that also being used between above-mentioned contact pilotage and magnetostriction element amplifies the amplifier of the elongation of magnetostriction element according to claim 38 head at described quarter.
48., it is characterized in that it is 2: 1 that described amplifier amplifies the ratio of upholding according to claim 47 head at described quarter.
49., it is characterized in that described amplifier comprises an amplifier arm that is coupled with above-mentioned magnetostriction element and contact pilotage according to claim 48 head at described quarter.
50., it is characterized in that described magnetostriction element is positioned on the straight line with contact pilotage in fact according to claim 38 head at described quarter.
51. a method that is used to scribe the photogravure cylinder, it comprises: the plate-making position that the photogravure cylinder is installed on rotatably platemaking machine; Contact pilotage is positioned the roughly corresponding position, surface of cutting blocks for printing with the photogravure cylinder; With contact pilotage and magnetostriction element coupling; Encourage described magnetostriction element,, its predetermined pattern is engraved on the cylinder surface with vibration contact pilotage when cylinder rotates.
52., it is characterized in that the step of described excitation comprises at least one coil location around above-mentioned magnetostriction element according to the described method of claim 51; Encourage at least one above-mentioned coil.
53., it is characterized in that above-mentioned magnetostriction element has many strain curves according to the described method of claim 51, its step also comprises the compression magnetostriction element, makes it obtain in the above-mentioned strain curve one.
54., it is characterized in that this method also comprises described magnetostriction element is biased into bias state according to the described method of claim 51.
55., it is characterized in that this method also comprises the above-mentioned magnetostriction element that is in bias state of excitation, makes stylus vibration according to the described method of claim 54.
56., it is characterized in that this method also comprises amplifies predetermined amplification quantity with the extension of above-mentioned magnetostriction element according to the described method of claim 51.
57., it is characterized in that described amplification quantity is 2: 1 according to the described method of claim 56.
58., it is characterized in that this method also comprises described contact pilotage and magnetostriction element put and fixes on the same line according to the described method of claim 51.
59., it is characterized in that this method also comprises utilizes a magnetostriction coefficient to be at least about the magnetostriction element of 500p.p.m according to the described method of claim 51.
60. according to the described method of claim 59, it is characterized in that, contain Tb in the described magnetostriction element
xDY
1-xFe
2
61. according to the described method of claim 51, it is characterized in that, contain Tb in the described magnetostriction element
xDY
1-xFe
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95120373A CN1153320A (en) | 1994-11-04 | 1995-11-03 | Method and apparatus for engraving using magnetostrictive actuator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US334740 | 1994-11-04 | ||
| US433083 | 1995-05-03 | ||
| CN95120373A CN1153320A (en) | 1994-11-04 | 1995-11-03 | Method and apparatus for engraving using magnetostrictive actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1153320A true CN1153320A (en) | 1997-07-02 |
Family
ID=5082285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95120373A Pending CN1153320A (en) | 1994-11-04 | 1995-11-03 | Method and apparatus for engraving using magnetostrictive actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1153320A (en) |
-
1995
- 1995-11-03 CN CN95120373A patent/CN1153320A/en active Pending
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