CN104175005A - Thin plate retaining device - Google Patents

Thin plate retaining device Download PDF

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Publication number
CN104175005A
CN104175005A CN201310203228.6A CN201310203228A CN104175005A CN 104175005 A CN104175005 A CN 104175005A CN 201310203228 A CN201310203228 A CN 201310203228A CN 104175005 A CN104175005 A CN 104175005A
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CN
China
Prior art keywords
mentioned
parts
thin plate
frame material
holding device
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Granted
Application number
CN201310203228.6A
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Chinese (zh)
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CN104175005B (en
Inventor
藤泽佳生
古田泰之
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Sumitomo Heavy Industries Ltd
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Nippon Vehicle Manufacturing K K
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Application filed by Nippon Vehicle Manufacturing K K filed Critical Nippon Vehicle Manufacturing K K
Priority to CN201310203228.6A priority Critical patent/CN104175005B/en
Publication of CN104175005A publication Critical patent/CN104175005A/en
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Publication of CN104175005B publication Critical patent/CN104175005B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0408—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work for planar work

Abstract

The invention provides a thin plate retaining device capable of arranging a thin plate on an XY platform in an opening mode by simple and convenient operation in a laser machine. A first frame material (21) and a second frame material (22) are fixedly arranged on the XY platform (11), and are spaced from each other by a given distance. A first part (130) is arranged between the first frame material (21) and the second frame material (22), and one end of a thin plate (W) is clamped by the first part (130). A second part (140) is formed by relatively moving from a direction away from the first part (130), and is arranged between the first frame material (21) and the second frame material (22) along the second frame material (22), and the other end of the thin plate (W) is clamped by the second part (22). The ends of multiple connecting rods (L) which are formed in a swinging way are connected with the corresponding multiple parts of the second part (22), and the other ends of the connecting rods (L) are connected with a cylinder (160). The thin plate (W) can be arranged on the XY platform (11) by the simple and convenient operation that force is applied to the second frame material (22) by the second part (140).

Description

Thin plate holding device
Technical field
The present invention relates to the thin plate holding device in a kind of laser machine of processing becoming the thin plate irradiation laser of machined object.
Background technology
When the machined object being formed by metal thin plate is carried out to microfabrication, use laser machine.Laser machine is, on the XY platform moving, establishes thin plate at the direction plane of the optical axis along perpendicular to laser, by XY platform, thin plate moved to XY direction, and cuts off thin plate by irradiate the laser of optically focused from processing head.High accuracy/high-quality cut off thin plate in the situation that, make the focal point of the laser on thin plate as much as possible little, focal position can not changed, and sprays assist gas to thin plate (processing department).By spraying assist gas, the fused mass dispersing from the cut-off parts of thin plate in the time of can blowing Laser Processing off etc. to thin plate.
But, exist because the injection of assist gas is pressed and produces local deflection (wrinkle) and the problem of the focal point change of laser on thin plate.In order to address this problem, it is effective to overcome the injection pressure of assist gas that thin plate tensioning is held in to XY platform.
But, exist the tension force that is difficult for the injection that overcomes assist gas being pressed to put on the problem that thin plate is held in XY platform by thin plate on one side, needs proficiency on one side.
Summary of the invention
The present invention proposes in order to solve the above problems, and its object is to provide a kind of thin plate holding device, can thin plate be opened and is located on XY platform with easy operation.
In order to realize this object, the thin plate holding device of recording according to technical scheme 1, is the thin plate holding device in laser machine, and this laser machine possesses: processing head, irradiates laser and sprays assist gas to the thin plate that becomes machined object; And XY platform, planar movement on the direction of the optical axis of the laser perpendicular to irradiating from this processing head is installed with across both opposed the 1st frame material of set a distance and the 2nd frame material on XY platform.Between the 1st frame material and the 2nd frame material, be equipped with the 1st parts, by one end of the 1st parts clamping thin plate.Can form with relatively moving and have the 2nd parts in the direction of leaving from the 1st parts, the 2nd parts be provided between the 1st frame material and the 2nd frame material along the 2nd frame material.The other end by the 2nd parts clamping thin plate.
One end of a plurality of connecting rods that can swingingly form in the face intersecting with optical axis links with a plurality of positions of the 2nd parts, the other end of these connecting rods and tension-applying mechanism link.This tension-applying mechanism to the 2nd parts to the 2nd frame material application of force, thereby two ends are applied to tension force by the thin plate of the 1st parts and the 2nd parts clamping, so have, can thin plate be opened with easy operation to the effect of being located at XY platform.
The thin plate holding device of recording according to technical scheme 2, is the thin plate holding device in laser machine, and this laser machine possesses: processing head, irradiates laser and sprays assist gas to the thin plate that becomes machined object; And XY platform, planar movement on the direction of the optical axis of the laser perpendicular to irradiating from this processing head is installed with across both opposed the 1st frame material of set a distance and the 2nd frame material on XY platform.Between the 1st frame material and the 2nd frame material, be equipped with the 1st parts, by one end of the 1st parts clamping thin plate.Can form with relatively moving and have the 2nd parts in the direction of leaving from the 1st parts, the 2nd parts be provided between the 1st frame material and the 2nd frame material along the 2nd frame material.The other end by the 2nd parts clamping thin plate.
One end of thread-like member and the 2nd parts link, and the other end and the 1st parts link.This thread-like member is wound in the wheel that can be rotated earth's axis Zhi Yu 1 parts, so can make the 1st parts and the 2nd parts relatively move in the centre position of the 1st frame material and the 2nd frame material.By tension-applying mechanism to the 2nd parts to the 2nd frame material application of force, thereby two ends are applied to tension force by the thin plate of the 1st parts and the 2nd parts clamping, therefore have and can thin plate be opened with easy operation to the effect of being located at XY platform.
The thin plate holding device of recording according to technical scheme 3, is the thin plate holding device in laser machine, and this laser machine possesses: processing head, irradiates laser and sprays assist gas to the thin plate that becomes machined object; And XY platform, planar movement on the direction of the optical axis of the laser perpendicular to irradiating from this processing head is installed with across both opposed the 1st frame material of set a distance and the 2nd frame material on XY platform.Between the 1st frame material and the 2nd frame material, be equipped with the 1st parts, by one end of the 1st parts clamping thin plate.Can form with relatively moving and have the 2nd parts in the direction of leaving from the 1st parts, the 2nd parts be provided between the 1st frame material and the 2nd frame material along the 2nd frame material.The other end by the 2nd parts clamping thin plate.
Between the 2nd parts and the 1st parts, be equipped with cramp bar, utilize these cramp bar supporting two ends by the lower surface of the thin plate of the 1st parts and the clamping of the 2nd parts, so can suppress the thin plate deflection downwards due to deadweight.Utilize tension-applying mechanism to the 2nd parts to the 2nd frame material application of force, thereby two ends are applied to tension force by the thin plate of the 1st parts and the 2nd parts clamping, therefore have and can thin plate be opened with easy operation to the effect of being located at XY platform.
The thin plate holding device of recording according to technical scheme 4, except any one effect realizing of technical scheme 1 to 3, can also carry out Laser Processing to the thin plate of the deformation rate strain with set, has the effect of the machining accuracy that can improve thin plate.
That is,, if the thin plate tensioning after Laser Processing being tensioned during Laser Processing is decontroled, return to the state before tensioning.If thin plate is with set deformation rate strain owing to applying tension force, the correction size that is multiplied by deformation rate by based target size is carried out Laser Processing, can be decontroled and thin plate after elastic recovery carries out the processing according to target size tensioning.
At this, holding device is, two ends are fixed in the 3rd frame material of the 1st frame material and the 2nd frame material across both set a distance was opposed, the fixing two ends of cross member on the 3rd frame material.This cross member and the 1st parts are arranged side by side, and cross member and the 1st parts are fastened by secure component.Thus, after the two ends of thin plate being held on to the 1st parts and the 2nd parts, if the 2nd parts are relatively moved to the direction of leaving from the 1st parts, the two ends of thin plate are applied to tension force, can make with set deformation rate thin plate strain, and by its tensioning.Its result, can prevent the thin plate distortion ground strain after tensioning, can make it with set deformation rate strain, the correction size that is therefore multiplied by deformation rate by based target size is carried out Laser Processing, can carry out the processing according to target size on by the thin plate after decontroling in tensioning.The effect thus, with the machining accuracy that can improve thin plate.
The thin plate holding device of recording according to technical scheme 5, secure component and tension-applying mechanism are equipped on a plurality of positions of the 1st parts and the 2nd parts and set as following position: a plurality of straight line parallels of the coupling position in the restraint location in the 1st parts of connection secure component and the 2nd parts of tension-applying mechanism.Thus, if thin plate is applied to tension force by tension-applying mechanism, can be along the parallel direction that connects secure component and tension-applying mechanism to thin plate active force.Its result, except the effect of technical scheme 4, also has the effect that can improve machining accuracy.
The thin plate holding device of recording according to technical scheme 6, cross member is arranged side by side the side of leaving from the 2nd parts at the 1st parts in the 1st parts and the residing plane of the 2nd parts, therefore with respect to the direction of the power acting on when making thin plate tensioning, can make the rigidity of the 1st parts and cross member increase.
And, consistent by the direction of power and the axis of secure component that make to act on when making thin plate tensioning, can prevent secure component effect bending stress to make the rigidity of the 1st parts and cross member to increase.These result, can suppress the distortion of the 1st parts and cross member, can by even tension put on thin plate.Its result, except the effect of technical scheme 5, also has the effect that can improve machining accuracy.
The thin plate holding device of recording according to technical scheme 7 loads thin plate on the loading surface of the 1st parts and the 2nd parts portion.By the thin plate that the vertical wall portion restriction that is located at the 1st frame material side and the 2nd frame material side is loaded on loading surface respectively, move.In state the 2nd parts relatively move to the direction of leaving from the 1st parts, distance between the bottom of wall portion is set greatlyr than the maximum of the dimensional tolerance of thin plate, therefore even if the size of thin plate, to the change of maximum side in the scope of tolerance, also can prevent that the end and the wall portion that are loaded in the thin plate on loading surface from touching.Thus, can between the 1st clamping part and the 2nd clamping part, not produce lax mode on thin plate, clamp thin plate, by making thin plate tensioning, can stably apply sufficient tension force to thin plate.Thus, any one the effect except technical scheme 1 to 3, also has the effect that can improve machining accuracy.
The thin plate holding device of recording according to technical scheme 8, is connected with the upper end of the wall portion of the 1st parts and the 2nd parts the epimere portion of setting and loading surface form step-like, distolateral this epimere portion that is equipped on of force application part.Along the opposed pressing component of length direction of loading surface, be biased the up application of force and separate set interval with loading surface of parts, therefore thin plate can be inserted to this gap.
And one distolateral what set force application part in forming step-like epimere portion with loading surface by wall portion, while therefore inserting thin plate between loading surface and pressing component, thin plate is hindered and can not reach force application part by wall portion.The end that thus, can prevent force application part and thin plate is touched and is damaged.And, the securing member declining by making pressing component overcome the active force of force application part, the press surface of pressing component is pressed to the thin plate that is loaded into loading surface, therefore can keep thin plate.
And the press surface of pressing component forms longer than the width of the thin plate in the direction of the direction that relatively moves perpendicular to the 2nd parts, therefore the enough independent pressing components of energy are pressed the width integral body of thin plate.Its result, except the effect of technical scheme 7, also has that the elastic deformation amount who prevents thin plate in the whole length direction of pressing component produces deviation and the effect that can improve machining accuracy.
The thin plate holding device of recording according to technical scheme 9, the upper side of wall portion is outstanding to the direction of processing head with respect to lower side respectively, so insert the top of the thin plate between loading surface and press surface, contact and take in loading surface with wall portion, can prevent from crossing the situation of wall portion.Thus, except the effect of technical scheme 8, also have and can prevent that the thin plate of being clamped by loading surface and press surface from locating crooked effect in wall portion.
The thin plate holding device of recording according to technical scheme 10, overcome the active force based on tension-applying mechanism, by mobile restriction mechanics limit the 2nd parts, with respect to the relatively moving of the 1st parts, therefore can limit the elongation of thin plate being implemented to cut off the thin plate in the process of processing.
That is,, during Laser Processing, along with thin plate is implemented to cut off processing, the sectional area of thin plate diminishes.If the active force based on tension-applying mechanism is fixed, the sectional area along with thin plate diminishes, and stress increases, and at the elongation without the situation lower thin sheet of mobile restriction mechanism, increases.So, the machining accuracy of thin plate reduces.
On the other hand, by utilizing mobile restriction mechanics limit the 2nd parts with respect to the relatively moving of the 1st parts, even thin plate is implemented to cut off processing and the sectional area of thin plate diminishes, also can tensioning keep thin plate and limit the elongation of thin plate.Thus, any one the effect except technical scheme 1 to 3, also has the effect that can improve machining accuracy.
Accompanying drawing explanation
Fig. 1 is the front view of the laser machine in the 1st embodiment.
Fig. 2 is the top view of thin plate holding device.
Fig. 3 is the top view of the thin plate holding device in the 2nd embodiment.
Fig. 4 is the local amplification plan view of holding device.
Fig. 5 is the profile of holding device of the V-V line of Fig. 4.
Fig. 6 (a) is the profile of holding device of the VI-VI line of Fig. 4, (b) is the local amplification profile of accepting parts and pressing component.
Fig. 7 (a) is the profile of holding device of the VIIa-VIIa line of Fig. 4, is (b) pressing component when securing member is decontroled and the profile of accepting parts.
Fig. 8 is the top view of the thin plate holding device of the 3rd embodiment.
Fig. 9 is the profile of holding device of the IX-IX line of Fig. 8.
Figure 10 be the holding device seen from the arrow directions X of Fig. 8 want portion's side view.
The specific embodiment
Referring to accompanying drawing, preferred forms of the present invention is described.Fig. 1 is the front view of the laser machine 1 of the 1st embodiment of the present invention.As shown in Figure 1, laser machine 1 is configured to mainly to be possessed: processing head 4, irradiates laser and sprays assist gas to the thin plate W that becomes machined object; Holding device 10, keeps by the thin plate W of this processing head 4 irradiation laser.Irradiate the processing head 4 of laser via moving horizontally parts 3 hanging settings and arm 2.Move horizontally parts 3 and be configured to and can utilize Y-axis drive unit 3a and move along Y-direction with respect to arm 2, on the other hand, processing head 4 is configured to and can utilizes X-axis drive unit 4a and move along directions X with respect to moving horizontally parts 3.Processing head 4 is driven and move up in XY side with respect to arm 2 by X-axis drive unit 3a and Y-axis drive unit 4a.
Processing head 4 is to import laser by the optical fiber 6 being connected with laser oscillator 5.By condenser 7, by laser focusing, from 9 couples of thin plate W of nozzle of lower end, irradiate.Assist gas is supplied to processing head 4 from supply passageway 9a, from nozzle 9 to thin plate W, sprays.On processing head 4, be equipped with the protective cover 8 for the expulsion pressure protection condenser 7 from assist gas.Because the nozzle 9 of the lower end from processing head 4 irradiates laser and sprays assist gas to thin plate W, so blow off from disperse fused mass etc. of the cut-off parts of thin plate W can be by Laser Processing time.
The holding device 10 of maintenance thin plate W is fixedly arranged on and is installed to be the XY platform 11 that can move along XY direction with respect to platform (not shown).In the inner side of holding device 10, be equipped with machine table 12 with the opposed position of processing head 4.Machine table 12 is from below support sheet W and is used to form and will be attracted to the parts of the path of suction device (not shown) together with fused mass of assist gas and thin plate W etc.The upper surface of machine table 12 is set as the height that can slide with the lower surface that is held in the thin plate W of holding device 10.By being held by machine table 12 supportings the thin plate W that device 10 tensionings keep, can prevent that thin plate W is because of the expulsion pressure deflection downwards of assist gas.
The XY platform 11 that is installed with holding device 10 is the devices for the holding device 10 that moves up in XY side, is equipped with Y-axis drive unit 11a and X-axis drive unit 11b.By utilizing control device 13 to drive, control Y-axis drive unit 3a, 11a and X-axis drive unit 4a, 11b, processing head 4 and holding device 10(XY platform 11) cut-out data based on having preset move up in XY side.Thus, can the cut-out data based on having preset carry out the cut-out processing of thin plate W in control device 13.
The holding device 10 of thin plate W then, is described with reference to Fig. 2.Fig. 2 is the top view of the holding device 10 of thin plate W.In addition, Fig. 2 has omitted the diagram of the XY platform 11 that is installed with framework 20.As shown in Figure 2, holding device 10 possesses framework 20.Framework 20 is the parts that can be fixedly arranged on removably XY platform 11, by the 1st frame material 21 and the 2nd frame material 22 and keep the 3rd frame material 23 at the interval of the 1st frame material 21 and the 2nd frame material 22 to form the picture frame shape of overlooking rectangle.Medial surface along continuous straight runs at the 3rd frame material 23 is formed with guiding element 24.Guiding element 24 is the positions for making the 1st parts 30 and the 2nd parts 40 slide along the 3rd frame material 23.
The 1st parts 30 and the 2nd parts 40 are for clamping the parts at the two ends of thin plate W, are provided in substantially in parallel respectively the inner side of framework 20 with the 1st frame material 21 and the 2nd frame material 22.Support unit the 31, the 41st, alongst loads the parts of the end of thin plate W, and slide unit 31a, the 41a chimeric with the guiding element 24 of the 3rd frame material 23 are installed at the two ends of support unit 31,41.On the upper surface of support unit 31,41, possess for from upper surface, press thin plate W end pressing component 32,42 and make this pressing component 32,42 to the mobile and securing member 33,43 of clamping thin plate W of support unit 31,41 sides (below).By operation securing member 33,43, can make pressing component 32,42 move up and down.By pressing component 32,42 is moved downwards, can clamp thin plate W, by being moved upward, pressing component 32,42 decontrols.
The both end sides of the 1st parts 30 and the 2nd parts 40 is linked by the thread-like member such as cable wire, chain 51.One end is limited to the thread-like member 51 of the 2nd parts 40 extends and arranges towards the 1st frame material 21, is wound on the wheel 50 that can rotate earth's axis Zhi Yu 1 frame material 21, and the other end and the 1st parts 30 lock.Thus, if a side of the 1st parts 30 or the 2nd parts 40 is slided, the opposing party of the 1st parts 30 or the 2nd parts 40 slides linkedly by thread-like member 51.Can realize the 1st parts 30 and the 2nd parts 40, be positioned at respectively the mode of state of the length direction substantial middle of the 3rd frame material 23 with the 1st frame material 21 and the approaching state of the 2nd frame material 22 and the 1st parts 30 and the 2nd parts 40, the length of setting thread-like member 51 and slide unit 31a, 41a, with respect to the chimeric position of guiding element 24, therefore can remain on thin plate W the substantial middle of framework 20 by the 1st parts 30 and the 2nd parts 40.
On the 2nd parts 40, be equipped with: tension-applying mechanism 60, applies tension force to the thin plate W by the 1st parts 30 and the 2nd parts 40 clampings; And mobile restriction mechanism 70,2nd parts 40 of restriction based on this tension-applying mechanism 60 are to the movement of the 2nd frame material 22 sides.Tension-applying mechanism 60 possesses: fastener 61, is limited to the 2nd parts 40; Threaded rod 62, this fastener 61 is fixed in one end, another distolateral perforation is arranged at the 2nd frame material 22; And force section 63, by being combined with these threaded rod 62 screw threads, press the outside end face of the 2nd frame material 22, to the 2nd frame material 22 sides to fastener 61 and the 2nd parts 40 application of forces.The symmetrical position of imaginary line (not shown) in the width with respect to by framework 20 (Fig. 2 above-below direction) central authorities is respectively equipped with a tension-applying mechanism 60.
Mobile restriction mechanism 70 possesses: pushing portion 71, pushing the 2nd parts 40; Threaded rod 72, this pushing portion 71 is fixed in one end, and another distolateral perforation is arranged at the 2nd frame material 22; And fixed part 73, thereby the inner side end butt of being combined with these threaded rod 72 screw threads with the 2nd frame material 22 is fixed the interval of the 2nd parts 40 and the 2nd frame material 22.
The using method of the holding device 10 forming as described above then, is described.Thin plate W is used the big or small thin plate that is cut in advance necessary minimum.Thin plate W can carry out to the installation of framework 20 under the state that framework 20 is installed on to XY platform 11.In addition, because framework 20 can dismounting with respect to XY platform 11, therefore also can from XY platform 11 pull down framework 20 and in its elsewhere (so long as flat face, everywhere can) thin plate W is installed to framework 20.And, if prepare a plurality of frameworks 20, can under the state that has unloaded framework 20 from XY platform 11, open respectively in advance and establish thin plate W.If a plurality of frameworks 20 are opened and are established thin plate W in advance, can be fixedly arranged on the framework 20 of XY platform 11 and each framework 20 is carried out to the Laser Processing of thin plate W by replacing.
For thin plate W is installed to framework 20, first, rotation force section 63 and fixed part 73 and the part that unscrews becomes the state that the 2nd parts 40 can relatively move with respect to the 1st parts 30.Then, the 1st parts 30 and the 2nd parts 40 are moved accordingly with the length (Fig. 2 left and right directions size) of thin plate W.Operation securing member 33,43, to form gap at support unit 31,41 and 32,42 of pressing components, then by the gap of a distolateral insertion support unit 31 of thin plate W and pressing component 32, then operate securing member 33, with support unit 31 and pressing component 32 clamping thin plate W.Then, by another distolateral insertion support unit 41 of thin plate W and the gap of pressing component 42, then operate securing member 43, with support unit 41 and pressing component 42 clamping thin plate W.
Then, operation (rotation) force section 63, furthers fastener 61 to the 2nd frame material 22.Thus, the 2nd parts 40 are furthered to the 2nd frame material 22 sides, by the 1st parts 30 and the 2nd parts 40 tensionings, keep thin plate W.Then, operate fixed part 73, make the outside end face butt of pushing portion 71 and the 2nd parts 40, fix the interval of the 2nd parts 40 and the 2nd frame material 22.After this, carry out laser cutting processing.After laser cutting process finishing, operation force section 63, removes the tensioning of thin plate W, then operates securing member 33,43, removes the state by support unit 31,41 and pressing component 32,42 clamping thin plate W, unloads the thin plate W after process finishing.
According to the holding device 10 of the thin plate W forming as described above, the 1st parts 30 and the 2nd parts 40 are linked by the thread-like member 51 that is wound on axle and is supported on the wheel 50 of the 1st frame material 21, if so make the 2nd parts 40 towards the 2nd frame material 22 side shiftings, the 1st parts 30 are to the 1st frame material 21 side shiftings linkedly therewith, and the interval of the 1st parts 30 and the 2nd parts 40 broadens.And if make the 2nd parts 40 to the 1st frame material 21 side shiftings, the 1st parts 30 are to the 2nd frame material 22 side shiftings linkedly therewith, the interval of the 1st parts 30 and the 2nd parts 40 narrows down.Thus, can make the 1st parts 30 and the 2nd parts 40 relatively move in the centre position of the 1st frame material 21 and the 2nd frame material 22, can in the substantial middle of framework 20, keep thin plate W by holding device 10.Its result, if be set as processing head 4(with reference to Fig. 1) optical axis be positioned at the center of framework W, can be positioned at the focal point of laser thin plate W(material) the mode of approximate centre keep thin plate W.Therefore, be easy to implement Laser Processing centered by the central portion of thin plate W.
And, tension-applying mechanism 60 is equipped on the symmetrical position of imaginary line (not shown) with respect to width (Fig. 2 above-below direction) central authorities by framework 20, so as long as keep thin plate W at length direction (Fig. 2 above-below direction) center of the 1st parts 30 and the 2nd parts 40, just can roughly apply equably tension force on the width of thin plate W.
And, by 60 couples of thin plate W of tension-applying mechanism, applying under the state of fixing tension force, along with implementing laser cutting processing, the sectional area of thin plate W diminishes, and it is large that stress becomes, so the elongation (elastic deformation amount) of work in-process thin plate W becomes large.Now, corresponding to the elongation of thin plate W, with at control device 13(with reference to Fig. 1) in the cut-out data that preset produce poor, machining accuracy reduction.On the other hand, holding device 10 possesses mobile restriction mechanism 70, so can limit the extension of the thin plate W in processing.The elastic deformation amount that thus, can prevent work in-process thin plate W changes and machining accuracy reduces.
And, when applying fixing tension force by 60 couples of thin plate W of tension-applying mechanism, produce extension on thin plate W in Laser Processing, likely also thread-like member 51 is applied to tensile force.If to thread-like member 51 draw apply the state continuance of the power of stretching must be long, exist thread-like member 51 to extend or deteriorated danger.On the other hand, holding device 10 possesses mobile restriction mechanism 70, therefore can suppress the tensile force in Laser Processing, thread-like member 51 being applied.Its result, can suppress thread-like member 51 extensions or deteriorated.
Then, with reference to Fig. 3, the 2nd embodiment is described.In the 1st embodiment, illustrated that the 1st parts 30 and the 2nd parts 40 can be by thread-like member 51 mobile holding devices 10 linkedly reciprocally.On the other hand, in the 2nd embodiment, illustrate that the 1st parts 130 and the 2nd parts 140 can distinguish mobile independently holding device 110.In addition, replace the holding device 10 in the 1st embodiment, in laser machine 1, set holding device 110.And, in the 2nd embodiment, for the part identical with the 1st embodiment, marked identical symbol and omitted the following description.Fig. 3 is the top view of the holding device 110 of the thin plate W in the 2nd embodiment.
The 1st parts 130 of holding device 110 and the 2nd parts 140 possess respectively the support unit 131,141 setting abreast with the 1st frame material 21 and the 2nd frame material 22.Support unit 131,141 inner sides along the 1st frame material 21 are erected at 23 of the 3rd frame materials, fastened fixing by fastening bolt 131a with respect to these the 3rd frame materials 23.In addition, on the 3rd frame material 23, along its length direction (Fig. 3 left and right directions), every set interval, be formed with fastener hole (not shown), support unit 131 is fixed on the big or small position corresponding to thin plate W.Inner side along the 2nd frame material 22 arranges support unit 141, and its length direction both ends (Fig. 3 above-below direction end) forwards, backwards left and right directions (Fig. 3 is direction up and down) is held in the guide surface (not shown) of guiding element 24 slidably.
The 1st parts 130 and the 2nd parts 140 possess: elongated tabular accept parts 132,142(with reference to Fig. 4), along the edge of the upper surface of support unit 131,141, set; Pressing component 133,143, is provided in the top of accepting parts 132,142; And securing member 134,144, this pressing component 133,143 is applied to pressing force.On support unit 131,141, on the symmetrical position of the imaginary line (not shown) of width (Fig. 3 above-below direction) central authorities with respect to by framework 20, be equipped with respectively four securing members 134,144.
And, on the side of the 2nd frame material 22 sides of support unit 141, via connecting rod L, link with the pressure cylinder 160 that is installed on the 2nd frame material 22.And support unit 141 and the 2nd frame material 22 link by connecting member 170.In addition, near the position the 3rd frame material 23, in the symmetrical position of imaginary line (not shown) of width (Fig. 3 above-below direction) central authorities with respect to by framework 20, is respectively equipped with a pressure cylinder 160.Specific pressure cylinder 160 be positioned at the width inner side of framework 20 position, in the position with respect to imaginary line symmetry, be respectively equipped with a connecting member 170.
Then, with reference to Fig. 4, near the detailed formation that support unit 141 is is described.Fig. 4 is the local amplification plan view of holding device 110.As shown in Figure 4, pressure cylinder 160 is installed on the 2nd frame material 22 with bar 161 towards the state of support unit 141 sides, and on the top of bar 161, swingingly pin is combined with the distolateral of connecting rod L.On the other hand, another the distolateral swingingly pin at connecting rod L is combined with the fastening support component 162 that is fixed on the side of support unit 141.
Thus, make pressure cylinder 160 action and while shrinking drive rod 161, support unit 141 is furthered to pressure cylinder 160 sides (Fig. 4 right side) via connecting rod L by this convergent force, to thin plate, W applies tension force.Thus, can be by thin plate W to make the state of its tensioning be held in framework 20(with reference to Fig. 3).And, now, the length direction both ends of support unit 141 can be held in the guide surface of guiding element 24 slidably towards direction all around, and support unit 141 via two connecting rod L(with reference to Fig. 3) link with pressure cylinder 160, therefore, even with lax a little state splint fixation W, support unit 141 also tilts in the horizontal direction by connecting rod L and is furthered to the 2nd frame material 22.Thus, can make thin plate W tensioning equably.
In addition, pressure cylinder 160 is the pneumatic cylinders that utilize air pressure telescopic drive bar 161, is configured to the reciprocating pressure cylinder that utilizes air pressure and drive and shrink the twocouese action driving in the elongation of bar 161.Thus, by the driving pressure (atmosphere release) of release pressure cylinder 160, can remove the driving force applying to support unit 141 from pressure cylinder 160.
Connecting member 170 is parts of connection support part part 141 and the 2nd frame material 22, and can slide with the bottom surface of these stop components 171 and the upper surface of matrix part 172 by the fastened side that is fixed on support unit 141 of fastening bolt (not shown) and to the flat matrix part 172 of the bottom surface butt of the outstanding flat stop component 171 of the 2nd frame material 22.
Stop component 171 and matrix part 172 form reciprocally parallel tabular surface of upper surface and bottom surface, and these upper surfaces and bottom surface set in the mode parallel with the flexible direction of pressure cylinder 160.Thus, at support unit 141, be accompanied by the flexible of pressure cylinder 160 and during parallel, the upper surface of the bottom surface of stop component 171 and matrix part 172 can slide.
On stop component 171, in thickness of slab direction, be formed through with pressure cylinder 160 in the flexible direction of bar 161 extend abreast overlooking as oblong slotted hole 171a of setting, on matrix part 172, in position corresponding to slotted hole 171a with stop component 171, in thickness of slab direction, be formed through the axle inserting hole (not shown) of overlooking as circular.And on the 2nd frame material 22, position corresponding to axle inserting hole with matrix part 172 is formed through and overlooks as circular through hole (not shown) in thickness of slab direction.Handle portion 173 is threaded with the top of fastener shaft parts 174, these fastener shaft parts 174 are inserted through respectively these slotted holes 171a, through hole (Fig. 4 paper vertical direction), be not threaded revolvably have the clamp nut portion (not shown) of double nut function in lower end.
Thus, by making handle portion 173 rotations, can make handle portion 173 for 174 precessions of fastener shaft parts and between clamp nut portion (the 2nd frame material 22) and handle portion 173, clamp to keep stop component 171 and matrix part 172(below, this state be called to " tightening state "), can pass through connecting member 170 support unit 141 and the 2nd frame material 22 is fastening.; in the cut-out of carrying out thin plate W, add man-hour; convergent force by pressure cylinder 160 is near towards the 2nd frame material 22 laybacks by support unit 141; after the state of the tensioning applying based on tension force that forms thin plate W; operation by handle portion 173 makes connecting member 170 become tightening state, by connecting member 170 connection support part parts 141 and the 2nd frame material 22.Its result, can limit the elongation of thin plate W being implemented to cut off the thin plate W in the process of processing.
Returning to Fig. 3 describes.In machine table 12, be equipped with the distance detection device 180 of the distance that detects machine table 12 and the 1st parts 130.Distance detection device 180 be for detection of until the distance of the 1st parts 130 and export this testing result to control device 13(with reference to Fig. 1) device, the output loop (not shown) that possesses range sensor (not shown) and the testing result of this range sensor is processed and exported to control device 13.Range sensor is following sensor: from inner light source (LED or laser diode), to the 1st parts 130, irradiate light, and by the light receiving element with inner (not shown) thus receive by the reverberation detection distance of the 1st parts 130 reflections.
Cramp bar 181 and the 1st parts 130 and the 2nd parts 140 substantially in parallel, be reciprocally provided in to devices spaced apart the inner side of framework 20.Cramp bar 181 is the parts that support the thin plate W being kept by the 1st parts 130 and the 2nd parts 140, and the lower surface butt of the upper end of cramp bar 181 and thin plate W, is supported on set height and position by thin plate W.At the two ends of cramp bar 181, set up slide unit 182.Slide unit 182 engages with the medial surface of the 3rd frame material 23, thereby cramp bar 181 can move along the 3rd frame material 23.Slide unit 182 use elastomeric elements (spring) 183 reciprocally link, and also use respectively elastomeric element (spring) 184 to link between the 1st frame material 21 and the 2nd frame material 22 and slide unit 182.
In addition,, at the specified location of the cramp bar 181 between machine table 12 and the 1st parts 130, cut and be formed with the cut-away 181a that the light for making to irradiate to the 1st parts 130 from distance detection device 180 passes through.By be formed with cut-away 181a on cramp bar 181, can realize the supporting based on distance detection distance detection device 180 and the 1st parts 130 and the thin plate W based on cramp bar 181 simultaneously.
If keep thin plate W by the 1st parts 130 and the 2nd parts 140, this thin plate W is by two cramp bars 181 and machine table 12 supporting lower surfaces.Thus, by cramp bar 181, can make between the 1st parts 130 and the 2nd parts 140 and machine table 12 deflection based on deadweight of the thin plate W that produces further reduce, can by thin plate W general planar be installed on framework 20.Its result, even if the tension force being applied by 160 couples of thin plate W of pressure cylinder is smaller, also can prevent that thin plate W is to optical axis direction downside (Fig. 3 paper the is inboard) deflection of laser.If can reduce the tension force that thin plate W is applied, can reduce the elastic deformation amount that thin plate W keeps based on tensioning, and can adopt the pressure cylinder 160 that tensile force is little.
In addition, at laser cutting, add man-hour, framework 20 with based on control device 13(with reference to Fig. 1) the movement of XY platform 11 of cut-out information together with move.Now, if cramp bar 181 contacts with machine table 12, cramp bar 181 moves by slide unit 182.And if framework 20 moves round about, cramp bar 181 returns to original position by elastomeric element 183,184.Therefore, cramp bar 181 can not become the obstruction of Laser Processing.
In the present embodiment, the situation that consists of elastomeric element 183,184 has been described, but might not be defined in this spring, can certainly form elastomeric element 183,184 with rubber etc.And, the situation that slide unit 182 links with elastomeric element 183 has each other been described, but also slide unit 182 can have been linked with rigid bodies such as connecting rods each other, will between the 1st frame material 21 and the 2nd frame material 22 and slide unit 182, with Compress Spring, link.And, by setting up buffer, can suppress the vibration of the cramp bar 181 that elastomeric element 183,184 causes.
Then,, with reference to Fig. 5 to Fig. 7, the detailed formation of holding device 110 is described.Fig. 5 is holding device 110(the 2nd parts 140 of the V-V line of Fig. 3) profile.In addition, in the formation of these explanation the 2nd parts 140 and the 1st parts 130 that description thereof is omitted similarly forms.
As shown in Figure 5, the 2nd parts 140 are configured to be possessed: accept parts 142, in inner side, (Fig. 5 left side) forms the loading surface 142a that loads thin plate W; The 142b of wall portion, vertical this rear end side of accepting the loading surface 142a of parts 142 (Fig. 5 right side) that is located at; Distolateral being fixed on of force application part 145, is connected with the upper end of the 142b of this wall portion and forms the step-like 142c of epimere portion with loading surface 142a; And pressing component 143, another of fixing (butt) this force application part 145 is distolateral and by the application of force upwards, and separates set compartment of terrain, opposite along the length direction (Fig. 5 paper vertical direction) of loading surface 142a with loading surface 142a.
Accept parts 142 and by bolt etc., be fixed near the edge, inner side (Fig. 5 left side) of the upper surface of support unit 141, loading surface 142a forms longlyer than the width of thin plate W (Fig. 3 above-below direction) in the whole length direction of accepting parts 142.On loading surface 142a, in whole length direction, to become the mode of male and fomale(M&F), be formed with slot part 142a1.At the medial end of loading surface 142a, in whole length direction, up protrude and be provided with the protuberance 142d that forms ridge shape.
The 142b of wall portion is accepting the whole length direction of parts 142 (Fig. 5 paper vertical direction) neutrality and is being located at the rear end side (Fig. 5 right side) of loading surface 142a, form top than bottom (Fig. 5 downside) to the inside (Fig. 5 left side) outstanding.Therefore because the top of the 142b of wall portion is more outstanding than bottom, while inserting thin plate W between loading surface 142a and the press surface 143a of pressing component 143, can prevent that the top of the thin plate W that is inserted into from crossing the 142b of wall portion.In addition, if thin plate W crosses the 142b of wall portion, by pressing component 143 when accepting parts 142 and press, the top of thin plate W is at the 142b of wall portion and the 142c of epimere portion place warpage.Laser Processing to thin plate W, sometimes from a surface irradiation laser of thin plate W and after cutting off, upset thin plate W and establish word etc. with laser incising at opposing face, if the top bending of thin plate W, the clamping of the thin plate W after upset becomes difficult, therefore need to prevent this situation.
The 142c of epimere portion is connected and forms step-like position with loading surface 142a with the upper end of the 142b of wall portion, near the two places two ends of accepting parts 142 (Fig. 3 above-below direction), have been formed through through hole 142e from upper surface to the bottom surface of accepting parts 142 of the 142c of epimere portion.Force application part 145 is formed by collapse coil spring, from a distolateral insertion through hole 142e and compressed between the upper surface of support unit 141 and the lower surface of pressing component 143.Because being incorporated in by the 142b of wall portion, force application part 145 forms in the step-like 142c of epimere portion with loading surface 142a, therefore when accepting while inserting thin plate W between parts 142 and pressing component 143, thin plate W is by the 142b of wall portion obstruction and can not arrive force application part 145.The end that thus, can prevent force application part 145 and thin plate W is touched and is damaged.
Pressing component 143 is formed with the groove 143b that takes in the 142c of epimere portion that accepts parts 142 in whole length direction.On pressing component 143, form groove 143b, the 142c of epimere portion that accepts parts 142 is incorporated in this.Therefore, can prevent pressing component 143 moves in width (Fig. 5 left and right directions) meta offset with respect to accepting parts 142.And, the bottom surface butt of the other end of force application part 145 and groove 143b, the application of force thereby force application part 145 compressed pressing component 143 quilts between support unit 141 and pressing component 143 make progress.In this wise, pressing component 143 by the application of force that makes progress, therefore can set in advance gap by force application part 145 between loading surface 142a and press surface 143a.When keeping thin plate W with holding device 110, first, thin plate W is inserted to this gap, therefore can easily operate.
Than groove 143b (Fig. 5 left side) in the inner part, in whole length direction, form press surface 143a.Press surface 143a is accepted the position that the loading surface 142a of parts 142 presses, and in whole length direction, to become the mode of male and fomale(M&F), is formed with slot part 143a1.Owing to being formed with slot part 143a1,142a1 on press surface 143a and loading surface 142a, therefore can increase these faces and thin plate W frictional resistance when clamping thin plate W.Its result, is suppressed at and shrinks driving pressure cylinder 160(with reference to Fig. 3 and Fig. 4) and while making thin plate W tensioning, the thin plate W of tensioning slippage between press surface 143a and loading surface 142a.
The length of the length direction of press surface 143a forms than the width of the thin plate W in the direction of the direction that relatively moves (Fig. 3 left and right directions) perpendicular to support unit 141 long (with reference to Fig. 3 and Fig. 4).Thus, can on thin plate W, not producing warpage is clamped in the press surface 143a of pressing component 143 and is accepted between the loading surface 142a of parts 142.Its result, can prevent that the elastic deformation amount of thin plate W in accepting the whole length direction of parts 142 from producing inequality, can improve machining accuracy.
The length of the width of press surface 143a forms littlely than the length of the width of loading surface 142a.Thus, on the loading surface 142a that is accepting parts 142, load after thin plate W, if the press surface 143a of pressing component 143 is pressed to thin plate W, as shown in Figure 5, thin plate W protrudes with the inner side to loading surface 142a the protuberance 142d arranging and contacts, and from protuberance 142d to press surface 143a, tilts.Thus, at driving pressure cylinder 160(with reference to Fig. 3 and Fig. 4) and while making thin plate W tensioning, the component of the power of this tensioning acts on press surface 143a and loading surface 142a.Its result, can further increase frictional resistance, and the thin plate W that therefore can suppress tensioning slides and departs between press surface 143a and loading surface 142a.
Limiting unit 146 is upwards parts of the amount of movement upward of the pressing component 143 of the application of force of restriction quilt, is provided near two places of two ends (Fig. 3 above-below direction) of pressing component 143.In the present embodiment, limiting unit 146 is formed by the bolt that possesses axial region 146a and head 146b, in the through hole that is formed through the thickness direction (Fig. 5 above-below direction) in pressing component 143, insert the axis 146a of portion, the bottom of this axial region 146a with accept parts 142 and be threaded.The external diameter of head 146b is set to such an extent that than axial region 146a, to insert the internal diameter of through hole of logical pressing component 143 large, from the upper surface of support unit 141, is set to the height of the upper surface institute butt of the pressing component 143 being biased to the height of the lower surface of head 146b.Its result, by the upper surface of pressing component 143 and the lower surface butt of head 146b, the movement of the further upward direction of the pressing component 143 that restriction is biased.
The securing member of the 2nd parts 140 then, is described with reference to Fig. 6.Fig. 6 (a) is holding device 110(the 2nd parts 140 of the VI-VI line of Fig. 4) profile, Fig. 6 (b) is the local amplification profile of accepting parts 142 and pressing component 143.In addition,, in Fig. 6 (a), omitted the diagram of a part for the record of the support component 162 that can see on the right side of support unit 141 and the length direction of handle 144e.
As shown in Figure 6 (a), the 2nd parts 140 possess near the edge, outside (Fig. 6 (a) right side) at the upper surface of support unit 141 by fixing securing members 144 such as bolts.In securing member 144, to being formed at the press body 144a pressing on the top of the press surface 143a of pressing component 143, be installed on connecting rod 144b, this connecting rod 144b links by pin 144d and the bracket 144c that is fixed on the upper surface of support unit 141.And handle 144e links by pin 144f and connecting rod 144b, and link by pin 144h and bracket 144c via connecting rod 144g.
Because securing member 144 forms as described above, so if depression of handle 144e, as shown in Figure 6 (a), press body 144a presses pressing component 143, and the thin plate W inserting between loading surface 142a and press surface 143a is held.And if, handle 144e is being lifted upward, and connecting rod 144b is to turn clockwise in Fig. 6 (a), and press body 144a is moved upward, therefore pressing component 143 because of based on force application part 145(with reference to Fig. 5) active force rise, in loading surface 142a and press surface 143a, form gap.Its result, in order to make thin plate W be clamped between loading surface 142a and press surface 143a, can insert thin plate W betwixt.
At this, in order to clamp thin plate W accepting between parts 142 and pressing component 143, first, the 2nd parts 140 to from the 1st parts 130(with reference to Fig. 3) under state the direction left relatively moves (pressure cylinder 160 is extended and make the approaching state of distance of the 2nd parts 140 and the 1st parts 130), between loading surface 142a and press surface 143a, insert thin plate W.Now, the distance D (with reference to Fig. 6 (b)) of the bottom of the bottom of the vertical wall portion (not shown) of accepting parts 132 that is located at the 1st parts 130 and the vertical 142b of wall portion that accepts parts 142 that is located at the 2nd parts 140 is set greatlyr than the maximum of the size of thin plate W (length) tolerance.Therefore,, even if the size of thin plate W changes to maximum side in the scope of tolerance (± 3mm left and right), also can prevent from touching at the end and the 142b of wall portion that accept the thin plate W inserting between parts 142 and pressing component 143.
Thus, can between the 1st parts 130 and the 2nd parts 140, not produce and loosely clamp thin plate W, can to thin plate W, stably apply sufficient tension force by making thin plate W tensioning.Thus, can prevent that elastic deformation amount is because tension force that thin plate W is applied is along with each thin plate W changes.Thus, can improve the machining accuracy by laser.
Then, with reference to Fig. 7 (a), light beam irradiates portion 180 is described.Fig. 7 (a) is holding device 110(the 2nd parts 140 of the VIIa-VIIa line of Fig. 4) profile.As shown in Figure 7 (a), the 2nd parts 140, accepting the accepting on parts 142 and pressing component 143 of the upper and lower overlapping position of the loading surface 142a of parts 142 and the press surface 143a of pressing component 143, are formed through the open-work 140a, the 140b that are communicated with up and down.
Open-work 140a, 140b are formed at respectively the position in the gripper edge boundary line from the side away from the 142b of wall portion (Fig. 7 left side) of accepting parts 142 and pressing component 143.If gripper edge boundary line means the end of the thin plate W inserting and surpasses gripper edge boundary line and in the 142b of wall portion side, also can clamp the line on the border of thin plate W between loading surface 142a and press surface 143a when making thin plate W tensioning.On the other hand, if the end of the thin plate W inserting does not surpass gripper edge boundary line, the area of the thin plate W even being clamped by loading surface 142a and press surface 143a narrows down, the problem of thin plate W from departing between loading surface 142a and press surface 143a when making thin plate W tensioning likely.
In the present embodiment, in being formed at the open-work 140a that accepts parts 142a, take in the light beam irradiates portion 180 towards the opposing party's open-work 140b illumination beam, in being formed at the open-work 140b of pressing component 143, take in the light receiver 181 receiving to the light beam of open-work 140b incident.Light receiver 181 via cable C by beam detection have or not input and output loop (not shown), control device 13(is processed and exported to output loop with reference to Fig. 1 by this testing result).In control device 13, when light receiver 181 detects light beam, the area that is judged as the thin plate W being clamped by loading surface 142a and press surface 143a is narrow, is created in the danger of thin plate W from departing between loading surface 142a and press surface 143a while making thin plate W tensioning.In order to prevent this problem, carry out the report to operator based on warning tones etc., make the action of laser machine 1 become holding state.
On the other hand, when light receiver 181 does not detect light beam, the thin plate W that is judged as insertion surpasses gripper edge boundary line (position of open-work 140a, 140b), therefore makes pressure cylinder 160(with reference to Fig. 3) drive and make thin plate W tensioning, continue Laser Processing.In the size of thin plate W in short-term, clamping and tensioning based on accepting the thin plate W of the loading surface 142a of parts 142 and the press surface 143a of pressing component 143 become insufficient, sometimes produce the bad or machining accuracy that thin plate W departs from and reduce.But because laser machine 1 possesses light beam irradiates portion 180, whether the size that can differentiate thin plate W before Laser Processing is short, the size that therefore can prevent from not noticing thin plate W is short and process the reduction of the bad and machining accuracy causing.
Then, with reference to Fig. 7 (b), pressing component 143 be described and accept the shape of parts 142.Fig. 7 (b) is with reference to Fig. 6 (a) by securing member 144() pressing component 143 while decontroling and accept the profile of parts 142.As shown in Figure 7 (b) shows, the press surface 143a of pressing component 143 is configured to and to the direction that relatively moves along with along the 2nd parts 140 (Fig. 3 left and right directions) from the 142b of wall portion, leaves the direction inclination approaching with the loading surface 142a that accepts parts 142.
Thus, if use securing member 144(with reference to Fig. 6 (a) after thin plate W being loaded on loading surface 142a) pressing component 143 is declined, first the inner side of press surface 143b (Fig. 7 (b) left side) contacts with thin plate W, along with the decline of pressing component 143, the contact area of press surface 143a and thin plate W little by little broadens.Therefore,, if the outside of press surface 143a (Fig. 7 (b) right side) compared, inner side is oppressed thin plate W strongly.Make pressure cylinder 160(with reference to Fig. 3) to shrink and the 2nd parts 140 and the 1st parts 130 are left, the power that inside edge of press surface 143a is absorbed in thin plate W works, pushing thin plate W.Its result, can prevent that the thin plate W of tensioning from, accepting slip between parts 142 and pressing component 143, can not lose and apply tensile force thin plate W, can under in check state, make thin plate W strain.Its result, can improve machining accuracy.
In addition, in the 2nd embodiment, illustrated in being formed at the open-work 140b of pressing component 143, take in light receiver 181, control device 13 according to from be equipped on the light beam irradiates portion 180 of accepting parts 142 incident light have or not the situation that makes laser machine 1 action, but might not be defined in this, can certainly on pressing component 143, set light beam irradiates portion 180, and on parts 142, set light receiver 181 accepting.
And light receiver 181 is not essential, sometimes in being formed at the open-work 140b of pressing component 143, do not take in light receiver 181 yet.Now, the light beam of people's visual confirmation that can be by operation laser machine 1 by open-work 140b judges having or not of thin plate W.Although operator can visual confirmation during light beam by open-work 140b (size of thin plate W in short-term) having carried out the operation of clamping thin plate W, thereby ending the operation of laser machine 1, operator can prevent in advance bad generation.
And, holding device 110 has illustrated that support unit 141 is with respect to the situation of support unit 131 planar movements, the 2nd parts 140 apply the situation of tension force to thin plate W with respect to the 1st fixing parts 130 planar movement, but might not be defined in this, can be also that the 1st parts 130 and the 2nd parts 140 both sides move and to applying tension force at maintained thin plate W.Also obtain in this case same effect.
And, the press surface 143a situation that (Fig. 7 (b) left side) tilts to the inside of pressing component 143 has been described, but might not be defined in this, can certainly be that the loading surface 142a that accepts parts 142 tilts to the inside.In this case, also can be with the inner side (processing head 4 sides) of loading surface 142a and press surface 143a by thin plate W pushing effectively clamping.
And, the situation that forms force application part 145 with collapse coil spring has been described, but might not be defined in this, also can adopt other force application part.As other force application part, can exemplify out elastomer such as leaf spring, disc spring, synthetic resin system and rubber system etc.
Then, with reference to Fig. 8, the 3rd embodiment is described.In the 2nd embodiment, illustrated via connecting rod L and with pressure cylinder 160, the 2nd parts 140 have been furthered to and thin plate W is applied tension force and makes the thin plate W situation of strain equably to the 2nd frame material 22.In the 3rd embodiment, illustrate in order to make thin plate W strain and be arranged side by side the situation of cross member 238 with the support unit 231 of the 1st parts 230 more equably.In addition, for the part identical with the 2nd embodiment, mark identical symbol and omit the following description.Fig. 8 is the top view of the holding device 210 of the thin plate W in the 3rd embodiment.
Holding device 210 is configured to mainly to be possessed: the support unit 231, cross member 238(the 1st parts 230 that set abreast with the 1st frame material 21) and the 2nd parts 240; And the securing member 134,144 that is equipped on respectively the upper surface of support unit 231,141, be the two ends of clamping thin plate W and keep the device of thin plate W.
Support unit 231 sets along the inner side of the 1st frame material 21, at two ends, by the fastening moving-member 237 that is fixed with of fastening bolt (not shown), via moving-member 237, is erected between the 3rd frame material 23.Moving-member 237 is the parts that are equipped on the upper surface of the 3rd frame material 23, being configured to can be mobile along the guiding groove (not shown) being formed on the length direction (Fig. 8 left and right directions) of the 3rd frame material 23, and be configured to can be fastening fixing in the position arbitrarily of the 3rd frame material 23 by rotary handle 237a.
And, support unit 231 is, two positions in the symmetrical position of the imaginary line (not shown) of length direction (Fig. 8 above-below direction) central authorities with respect to by the 1st frame material 21 and the 2nd frame material 22, are formed with the through hole 231a that the side of side to the 1 frame material 21 sides (Fig. 8 left side) from the 2nd frame material 22 sides (Fig. 8 right side) of support unit 231 connects.
Cross member 238 is erected between the 3rd frame material 23 along support unit 231, the side of fastening the 1st frame material 21 sides that are fixed on moving-member 237 of fastening bolt 240 for two ends (Fig. 8 left side).Cross member 238 is, from the side of side to the 1 frame material 21 sides (Fig. 8 left side) of support unit 231 sides (Fig. 8 right side) of cross member 238, is formed through and is formed through the through hole 238c being communicated with in the through hole 231a of support unit 231.Support unit 231 and cross member 238 are fastening fixing by inserting the secure component 239 leading in through hole 231a, 238c.
Secure component 239 sets as following position: connect restraint location (A shown in Fig. 8) in the support unit 231 of secure component 239, pressure cylinder 160(support component 162(with reference to Fig. 4)) support unit 141 in the straight line C(imaginary line of two of coupling position (B shown in Fig. 8)) parallel.
Thus, make pressure cylinder 160(with reference to Fig. 4) action and while shrinking drive rod 161, support unit 141 is furthered to the 2nd frame material 22 sides (Fig. 4 right side) via connecting rod L by this convergent force, to thin plate, W applies tension force.Because support unit 141 links via two connecting rod L and pressure cylinder 160, even therefore splint fixation W under lax a little state, also make support unit 141 utilize the guiding element 24 at two ends to slide and tilt in the horizontal direction, can make roughly tensioning equably of thin plate W.
At this, at support unit 231, via moving-member 237, two ends are fixed in the situation (situation that does not possess cross member 238) on the 3rd frame material 23, if shrink driving pressure cylinder 160, make the 2nd parts 240 move and thin plate W is applied to tension force, thin plate W is acted on to tensile force on the connection end (moving-member 237) of support unit 231 and the incline direction of pressure cylinder 160.Thus, especially, thin plate W along near the distortion ground strain edge of the 3rd frame material 23.Under the state that thin plate W has been applied to tension force, implement Laser Processing, after Laser Processing, tensioning is decontroled, so thin plate W returns to the state before tensioning.If thin plate W is with set deformation rate strain equably owing to applying tension force, the correction size that is multiplied by deformation rate by based target size is carried out Laser Processing, can be decontroled and carry out the processing according to target size on thin plate W after elastic recovery in tensioning.
On the other hand, owing to connecting on the end (moving-member 237) of support unit 231 and the incline direction of pressure cylinder 160 and acting on tensile force at thin plate W, near the distortion ground strain edge of thin plate W, so near deformation rate edge becomes irregular, is therefore difficult to calculate correct correction size.Thus, can not implement according to the processing of target size thin plate W, near the machining accuracy machining accuracy of thin plate W, particularly edge reduces sometimes.
But, in holding device 210, with support unit 231(the 1st parts 230) and the 3rd frame material 23 is fixed at two ends via moving-member 237 for the cross member 238 that is arranged side by side, and be anchored on support unit 231 by secure component 239.Therefore, if shrink driving pressure cylinder 160, the 2nd parts 240 are moved, can to the thin plate W being kept by the 1st parts 230 and the 2nd parts 240, from both sides, (Fig. 8 left and right sides) edge applies tension force.Thus, can prevent thin plate W distortion ground strain.Its result, can correctly obtain the deformation rate of thin plate W and calculate correct correction size the integral body of thin plate W.Thus, can implement can improve the machining accuracy of thin plate W according to the Laser Processing of target size to thin plate W.
And, set for connect restraint location (A shown in Fig. 8) in the support unit 231 of secure component 239 with pressure cylinder 160(support component 162(with reference to Fig. 4)) support unit 141 in the straight line C(imaginary line of two of coupling position (B shown in Fig. 8)) parallel position, if therefore shrink driving pressure cylinder 160, thin plate W is applied to tension force, to thin plate W active force in the parallel direction that connects secure component 239 and pressure cylinder 160.Its result, compares with restraint location A and the nonparallel situation of coupling position B, can further improve the machining accuracy of thin plate W.
And, cross member 238 is arranged side by side in the 1st parts 230 and the residing plane of the 2nd parts 240 leaves side (the 1st frame material 21 sides) at the 1st parts 230 from the 2nd parts 240, therefore the situation that is arranged side by side cross member 238 with bottom surface side (Fig. 8 paper is inboard) at the 1st parts 230 is compared, the direction of the power acting on when making thin plate W tensioning, can increase the rigidity of the 1st parts 230.Thus, also suppress the distortion of the 1st parts 230, therefore can apply equably tension force to thin plate W, can further improve machining accuracy.
The detailed formation of cross member 238 then, is described with reference to Fig. 9.Fig. 9 is holding device 210(the 1st parts 230 of the IX-IX line of Fig. 8) profile.As shown in Figure 9, cross member 238 by the cross section with web 238a and edge of a wing 238b roughly the angle steel of L shape form.Web 238a is positioned at the 1st frame material 21(of support unit 231 with reference to Fig. 8) side of side, edge of a wing 238b is positioned at the bottom surface of support unit 231.On web 238a, be formed with through hole 238c and insert and be connected with secure component 239, quilt the fastening support unit 231 that is fixed on.Because cross member 238 has web 238a and edge of a wing 238b, therefore can increase the cross section secondary moment of torsion of cross member 238, can improve bending rigidity, and make cross member 238 weight savings.
That is, be configured to following direction: with respect to pressure cylinder 160(with reference to Fig. 8) flexible direction (Fig. 9 left and right directions), therefore the plane plane perpendicular, edge of a wing 238b of web 238a is in parallel, can improve the bending rigidity of cross member 238.Thus, can make fasteningly fixed the 1st parts 230 of cross member 238 and then made holding device 210 weight savings, therefore can make the XY platform 11(of planar movement with reference to Fig. 1) mobile device (not shown) miniaturization, and can suppress the energy that drives this mobile device required, can improve energy efficiency.And, owing to being positioned at the mode of the bottom surface of support unit 231 with edge of a wing 238b, set cross member 238, therefore can make cross member 238 along side and the bottom surface of support unit 231, can reduce the space that cross member 238 and support unit 231 occupy.
And, secure component 239 not and edge of a wing 238b between fastening support unit 231, and and web 238a between fastening support unit 231, thereby the axis of secure component 239 is configured in the direction vertical with the length direction (Fig. 9 paper vertical direction) of support unit 231.Its result, the direction (Fig. 9 left and right directions) of power acting in the time of can order thin plate W tensioning and the direction of the axis of secure component 239 are consistent.Thus, can prevent from acting on bending stress on secure component 239, can increase the rigidity of the 1st parts 230.Therefore, can occasionally suppress the 1st parts 230 distortion, can apply equably tension force to thin plate W, can improve machining accuracy.
Then, with reference to Figure 10, illustrate that the fastening cross member 238(that is fixed with is with reference to Fig. 8) moving-member 237.Figure 10 is the side view of wanting portion of the holding device 210 seen from the arrow directions X of Fig. 8.In addition,, in Figure 10, omitted the diagram of length direction and the diagram of cross member 238 of support unit 231.
As shown in figure 10, at the 1st frame material 21(of moving-member 237 of upper surface that is equipped on the 3rd frame material 23 with reference to Fig. 8) the side 237b of side is upper, boring has and is being formed with the 237c of hole portion of ridge interior week.At cross member 238(with reference to Fig. 8) upper form the through hole corresponding with the 237c of these hole portions, utilize fastening bolt 240(with reference to Fig. 8) thus fastening fixing is fixed on moving-member 237 by cross member 238.In addition, because cross member 238 has edge of a wing 238b(along the bottom surface of support unit 231 with reference to Fig. 9), therefore, with edge of a wing 238b, do not become to the mode of the fixing obstruction of moving-member 237, on the 237b of the side of moving-member 237, arrange and take in the recess of edge of a wing 238b, or partly remove edge of a wing 238b at moving-member 237 places.
The end of the face side of moving-member 237 (Figure 10 right side) forms has the step-like of vertical plane 237d, 237f and horizontal plane 237e, 237g.On the other hand, the end of support unit 231 also forms and has the step-like of vertical plane 231b, the 231d corresponding with the shape of the end of moving-member 237 and horizontal plane 231c, 231e.By horizontal plane 231c, the 231e of end of support unit 231 and horizontal plane 237e, the 237g butt of the end of moving-member 237, the two ends of support unit 231 are loaded in moving-member 237.Support unit 231 loads in moving-member 237 by the fastening fixing and two ends of secure component 239 and cross member 238 in this wise, therefore can at above-below direction (Figure 10 above-below direction), not rock and stably be fixed on cross member 238.
And, because vertical plane 231b, the 231d of the end of support unit 231 do not connect airtight and are formed with gap with vertical plane 237d, the 237f of the end of moving-member 237, therefore can prevent that support unit 231 is moved parts 237 restrictions, can prevent from shrinking driving pressure cylinder 160(with reference to Fig. 8) time thin plate W is being connected to the end (moving-member 237) of support unit 231 and the incline direction active force of pressure cylinder 160.Thus, can prevent thin plate W along near the distortion ground strain edge of the 3rd frame material 23.
Above, based on embodiment, the present invention has been described, but the present invention is not limited to above-mentioned embodiment, can easily infers and can in the scope that does not depart from aim of the present invention, carry out various improvement distortion.For example, the numerical value exemplifying out in the above-described embodiment (such as quantity of each formation etc.) is only an example, can certainly adopt other numerical value.
In the 3rd embodiment, illustrated and on support unit 231, be equipped with two secure components 239, on the corresponding position of the 2nd parts 240, be equipped with the situation (secure component 239 and the same number of situation of pressure cylinder 160) of two pressure cylinders 160, but might not be defined in this, can be also other mode.As other mode, for example can be in the situation that being equipped with plural a plurality of secure component 239, on the consistent position of the imaginary line (not shown) of the width with by framework 20 (Fig. 8 above-below direction) central authorities, set a pressure cylinder 160, or make secure component 239 different with the number of pressure cylinder 160, with respect to the imaginary line symmetry shape of the width central authorities by framework 20 set a plurality of pressure cylinders 160.In these cases, also can prevent that the two ends of support unit 231 from, by the 3rd frame material 23 restrictions, preventing thin plate W distortion and being out of shape.
In the 3rd embodiment, the fixing web 238a of cross member 238 has been described in the side of support unit 231, along the bottom surface of support unit 231, has set the situation of edge of a wing 238b, but might not be defined in this, also can be in the side of support unit 231 the fixing web 238a of cross member 238, edge of a wing 238b is stretched out to the 1st frame material 21 sides (Fig. 8 left side).Thus, the bottom surface of designing support unit 231 without considering to be equipped with this situation of edge of a wing 238b.Its result, can improve the free degree of the design of support unit 231, and, without the relation due to moving-member 237, remove partly the needs of edge of a wing 238b etc., it is easy that the installation of cross member 238 also becomes.
In the 3rd embodiment, the situation that cross member 238 is formed by the angle steel of cross section L-type shape has been described, but might not be defined in this, can certainly adopt other cross member.As other cross member, can exemplify out the various shaped steel such as the parts of solid flat column or hollow square tube type or H shaped steel, I shaped steel, U-steel, Z-shape steel etc. with web and the edge of a wing.And, be also not limited to shaped steel, can certainly adopt and with iron plate or steel plate etc., by bending process or welding etc., be formed with the parts of the edge of a wing and web.
In the 3rd embodiment, illustrated that cross member 238 is fixed on the situation of the 3rd frame material 23 via moving-member 237, but might not be defined in this, can certainly use fastening bolt etc. directly the 3rd frame material 23 to be fixed on in the two ends of cross member 238.
In the 3rd embodiment, the situation that is formed secure component 239 by bolt and nut has been described, but might not be defined in this, can certainly use the bolt of restraint parts etc. and other the secure component beyond nut.
In the 3rd embodiment, illustrated that the end of moving-member 237 and the end of support unit 231 possess the situation that forms step-like vertical plane 237d, 237f, 231b, 231d and horizontal plane 237e, 237g, 231c, 231e, but might not be defined in this, can certainly make vertical plane and vertical plane for the face with respect to horizontal direction and vertical inclination.As long as with respect to horizontal load, support unit 231 can not be moved parts 237 restrictions, just obtains the effect/effect same with above-mentioned embodiment.
And, a part for the formation that each above-mentioned embodiment also can have other embodiment respectively or a plurality of fractional additional in this embodiment or with the part of the formation of this embodiment or a plurality of part exchanges etc., thereby by this embodiment distortion and form.
For example, can certainly be substituted in the tension-applying mechanism 60 illustrating in the 1st embodiment and be arranged on the pressure cylinder 160 that illustrates in the 2nd embodiment and the 3rd embodiment, replace mobile restriction mechanism 70 and be arranged on the connecting member 170 that illustrates in the 2nd embodiment and the 3rd embodiment etc.And, the 1st parts 30 that illustrate can certainly be arranged side by side and fastening fixing in the 3rd embodiment in the cross member illustrating 238 grades and the 1st embodiment.
Description of reference numerals:
1 ... laser machine
4 ... processing head
10,110,210 ... holding device
11 ... XY platform
21 ... the 1st frame material
22 ... the 2nd frame material
23 ... the 3rd frame material
30,130,230 ... the 1st parts
32,42,133,143 ... pressing component
33,43,134,144 ... securing member
40,140 ... the 2nd parts
50 ... wheel
51 ... thread-like member
60 ... tension-applying mechanism
160 ... pressure cylinder (tension force actuation gear)
70 ... mobile restriction mechanism
170 ... connecting member (mobile restriction mechanism)
142a ... loading surface
142b ... wall portion
142c ... epimere portion
143a ... press surface
145 ... force application part
181 ... cramp bar
238 ... cross member
239 ... secure component
L ... connecting rod
O ... optical axis
W ... thin plate.

Claims (10)

1. a thin plate holding device, is the thin plate holding device in laser machine, and this laser machine possesses: processing head, irradiates laser and sprays assist gas to the thin plate that becomes machined object; And XY platform, planar movement on the direction of the optical axis of the laser perpendicular to irradiating from this processing head,
It is characterized in that possessing:
The 1st frame material and the 2nd frame material, be fixedly arranged on above-mentioned XY platform and across both set a distance was opposed;
The 1st parts, are provided between the 1st frame material and the 2nd frame material, and clamp one end of above-mentioned thin plate;
The 2nd parts, are configured to and can relatively move to the direction of leaving from the 1st parts, and are provided between above-mentioned the 1st frame material and above-mentioned the 2nd frame material along above-mentioned the 2nd frame material, clamp above-mentioned thin plate and other end one end opposition side;
A plurality of connecting rods, a plurality of positions of one end and the 2nd parts link, and form and can in the face intersecting with above-mentioned optical axis, swing;
Tension-applying mechanism, links with the other end of these connecting rods, and above-mentioned the 2nd parts, to above-mentioned the 2nd frame material application of force, are applied to tension force to two ends by the above-mentioned thin plate of above-mentioned the 1st parts and above-mentioned the 2nd parts clamping.
2. a thin plate holding device, is the thin plate holding device in laser machine, and this laser machine possesses: processing head, irradiates laser and sprays assist gas to the thin plate that becomes machined object; And XY platform, planar movement on the direction of the optical axis of the laser perpendicular to irradiating from this processing head,
It is characterized in that possessing:
The 1st frame material and the 2nd frame material, be fixedly arranged on above-mentioned XY platform and across both set a distance was opposed;
The 1st parts, are provided between the 1st frame material and the 2nd frame material, and clamp one end of above-mentioned thin plate;
The 2nd parts, are configured to and can relatively move to the direction of leaving from the 1st parts, and are provided between above-mentioned the 1st frame material and above-mentioned the 2nd frame material along above-mentioned the 2nd frame material, clamp above-mentioned thin plate and other end one end opposition side;
Thread-like member, one end and the 2nd parts link and the other end and above-mentioned the 1st parts link;
Wheel, is wound with this thread-like member, and can by axle, be propped up in above-mentioned the 1st parts rotatably;
Tension-applying mechanism, to the 2nd frame material application of force, is applied tension force to two ends by the above-mentioned thin plate of above-mentioned the 1st parts and above-mentioned the 2nd parts clamping to above-mentioned the 2nd parts.
3. a thin plate holding device, is the thin plate holding device in laser machine, and this laser machine possesses: processing head, irradiates laser and sprays assist gas to the thin plate that becomes machined object; And XY platform, planar movement on the direction of the optical axis of the laser perpendicular to irradiating from this processing head,
It is characterized in that possessing:
The 1st frame material and the 2nd frame material, be fixedly arranged on above-mentioned XY platform and across both set a distance was opposed;
The 1st parts, are provided between the 1st frame material and the 2nd frame material, and clamp one end of above-mentioned thin plate;
The 2nd parts, are configured to and can relatively move to the direction of leaving from the 1st parts, and are provided between above-mentioned the 1st frame material and above-mentioned the 2nd frame material along above-mentioned the 2nd frame material, clamp above-mentioned thin plate and other end one end opposition side;
Cramp bar, is provided between the 2nd parts and above-mentioned the 1st parts, and supporting two ends are by the lower surface of the above-mentioned thin plate of above-mentioned the 1st parts and above-mentioned the 2nd parts clamping;
Tension-applying mechanism, to above-mentioned the 2nd frame material application of force, is applied tension force to two ends by the above-mentioned thin plate of above-mentioned the 1st parts and above-mentioned the 2nd parts clamping to above-mentioned the 2nd parts.
4. the thin plate holding device as described in any one of claims 1 to 3, is characterized in that possessing:
The 3rd frame material, two ends are fixed in above-mentioned the 1st frame material and above-mentioned the 2nd frame material, across both set a distance was opposed;
Cross member, two ends are fixed in the 3rd frame material, and are arranged side by side with above-mentioned the 1st parts;
Secure component, fastening this cross member and above-mentioned the 1st parts.
5. thin plate holding device as claimed in claim 4, is characterized in that,
Above-mentioned secure component and mentioned strain applying mechanism are provided in a plurality of positions of above-mentioned the 1st parts and above-mentioned the 2nd parts, and,
Above-mentioned secure component and mentioned strain applying mechanism set as following position: a plurality of straight line parallels that connect the coupling position in above-mentioned the 2nd parts of restraint location in above-mentioned the 1st parts of above-mentioned secure component and mentioned strain applying mechanism.
6. thin plate holding device as claimed in claim 5, is characterized in that possessing:
Above-mentioned cross member is arranged side by side the side of leaving from above-mentioned the 2nd parts at above-mentioned the 1st parts in above-mentioned the 1st parts and the residing plane of above-mentioned the 2nd parts, and above-mentioned secure component sets as its axis is along above-mentioned straight line.
7. the thin plate holding device as described in any one of claims 1 to 3, is characterized in that,
Above-mentioned the 1st parts and above-mentioned the 2nd parts possess: loading surface, loads above-mentioned thin plate; Wall portion, founds respectively above-mentioned the 1st frame material side and above-mentioned the 2nd frame material side that is located at these loading surfaces,
Distance between the bottom of these wall portions is set as, under the state above-mentioned the 2nd parts relatively move to the direction of leaving from above-mentioned the 1st parts, larger than the maximum of the dimensional tolerance of above-mentioned thin plate.
8. thin plate holding device as claimed in claim 7, is characterized in that,
Above-mentioned the 1st parts and above-mentioned the 2nd parts possess:
Force application part, a distolateral epimere portion that is equipped on, described epimere portion be connected with the upper end of above-mentioned wall portion arrange and with above-mentioned loading surface form step-like,
Pressing component, by this force application part application of force that makes progress, and separate set interval with above-mentioned loading surface and opposed along the length direction of above-mentioned loading surface, and have press surface, described press surface forms longly than the width of the above-mentioned thin plate in the direction of the direction that relatively moves perpendicular to above-mentioned the 2nd parts;
Securing member, makes this pressing component overcome the active force of above-mentioned force application part and declines, and press surface is pressed to the above-mentioned thin plate that is loaded into above-mentioned loading surface.
9. thin plate holding device as claimed in claim 8, is characterized in that,
The upper side of above-mentioned wall portion is outstanding to the direction of above-mentioned processing head respectively with respect to lower side.
10. the thin plate holding device as described in any one of claims 1 to 3, is characterized in that, possesses mobile restriction mechanism, and the active force that it overcomes based on mentioned strain applying mechanism limits above-mentioned the 2nd parts relatively moving with respect to above-mentioned the 1st parts.
CN201310203228.6A 2013-05-28 2013-05-28 Thin plate holding meanss Active CN104175005B (en)

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CN104816096A (en) * 2015-04-29 2015-08-05 苏州市华宁机械制造有限公司 Thin plate laser cutting forming device
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CN202607099U (en) * 2012-01-19 2012-12-19 昆山思拓机器有限公司 Fixing device used for large-format sheets for laser precision cutting
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CN111761288A (en) * 2020-08-07 2020-10-13 珠海格力智能装备有限公司 Welding positioning auxiliary device
CN114101991A (en) * 2021-12-31 2022-03-01 芜湖创挚汽车科技有限公司 Be used for auto-parts welding position alignment structure

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