CN103273195A - Micro-blanking automation device and method of sheet metal under indirect impact of laser - Google Patents
Micro-blanking automation device and method of sheet metal under indirect impact of laser Download PDFInfo
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Abstract
The invention discloses a micro-blanking automation device and method of a sheet metal under indirect impact of laser. The micro-blanking automation device comprises a laser generating system, an automatic forming system and a control system, wherein the laser generating system is composed of a laser controller, a laser emitter and an optical fiber, the automatic forming device is composed of an end cap, a focusing lens cone, a machine body, a micro-blanking worktable, a three-coordinator moving chuck, a base, a varying magnetic field device, a rotary table multi-position device, a restraint layer-fly piece integrated piece, a restraint layer-fly piece integrated piece storage bin and a recovery device. According to the micro-blanking automation device and method of the sheet metal under the indirect impact of the laser, pulse laser is used as a forming power source, energy conversion between optical energy and mechanical energy is conducted through a restraint layer-fly piece integrated piece device, and therefore automation of the micro-blanking technology that the sheet metal is loaded through a fly piece driven by the pulse laser is achieved. The automatic forming system is relatively independent, the machining precision is free from external interference, and personal errors are avoided. Both laser circuits and the micro-blanking worktable are stored inside the machine body so that safety of experimental operation is improved.
Description
Technical field
The present invention relates to a kind of laser indirect and impact little stamping-out automation equipment and the method thereof of sheet metal down, belong to the advanced shaping field of machine-building and automation manufacture field, refer to MEMS (MEMS) part processing technical field especially.
Background technology
Along with making rapid progress of modern science and technology, also along with market keeping on improving to the sci-tech product requirement, such as fields such as Aero-Space, precision instrument, biologic medicals, the application of micro element is healed and is become extensive, demand to the miniature parts of various materials is all increasing, thereby has promoted the exploration new to the processing technology of micro element again.
Nowadays micromachining technology and the technology towards MEMS is to grow up on the basis of integrated circuit, mainly depend on Micrometer-Nanometer Processing Technologies such as LIGA, etching, little milling, fine electric spark, be subject to processing that efficient is low, cost is high and the restriction of problem such as contaminated environment, can not form large batch of automated production.Therefore, new little forming technology of attaching most importance to the micro-mould forming technique has obtained paying close attention to.
Make the method for micro mechanical structure as publication number for the silicon-based substrate of utilizing that the patent of CN 101583559A provides, can process the MEMS micro element that is applied in the semiconductor technology, but this processing method still is the application of integrated circuit technique, be confined to silicon on the part material, can not diversity select rapidoprint, micro element that especially can not processing metal; Publication number is that the patent of CN 2589139Y proposes a kind of fine electric spark lathe, can be used for processing micro element, but employed electrode shape need be determined according to institute's processing parts shape in this processing method, need to consume serious wear in special processing and the process, mismachining tolerance strengthens gradually; Can find also that in the patent of publication number CN 101108433A spark machined generally need be equipped with special separately electrode for different parts.In addition, main proposition is the preparation of little milling cutter in this patent, also reflects that from an angle the difficult and cost of little Milling Process cutter manufacturing is higher.Compare a kind of brand-new technology with method with above all processing technologys---the little forming technique of Laser Driven film flying then has very big advantage, and precision is higher, with low cost, be easy to realize mass and automated production.The advantage of the little forming technique of Laser Driven film flying can embody in patent of the present invention fully.
The little shaping of Laser Driven film flying is the little metallic element forming technique of a kind of novel MEMS, namely the mode that loads by the Laser Driven film flying replaces laser directly to impact, utilize Laser Driven film flying high-speed motion, laser energy is converted into the kinetic energy of film flying, the film flying of high-speed motion is as the carrier of laser energy, fly and bump with workpiece material behind the segment distance, produce high-pressure shocking wave at the collision interface, impacting with high pressure wave direction material internal is propagated, make material in minisize mould, produce ultrafast plastic deformation, thereby realize the Accurate Shaping of workpiece in micro-mould.The Chinese patent of application number 201010505869.3 has been introduced and has been used the technical process that the little forming technique of Laser Driven film flying is carried out little metal device stamping-out, utilizes the method for this patent to carry out the mass stamping-out in pulsatile once laser, easily and effectively.But the laser indirect that the device of using the little stamping-out technology of Laser Driven film flying at present can not be continuous impacts the little stamping-out of sheet metal down, it produces the just shaping of a plurality of dies under pulsatile once impacts in batches, it is not truly rapidly, continuously mass production, again because in these apparatus and method after a laser impact forming, workpiece and anchor clamps etc. need clamping again, will certainly influence machining accuracy owing to manually-operated brings human error thus.And also there is certain potential safety hazard in open laser optical path.
Summary of the invention
At the problems referred to above that exist in little forming technique in the prior art, the process equipment that namely is applied to little punching process is simple and crude relatively, also simple relatively present situation of preparation method, the invention provides a kind of new automatic production device and method, realize that pulse laser drives the automated production that film flying loads little blanking part of thin plate, enhances productivity and crudy.
Technical scheme of the present invention is:
Laser indirect impacts little stamping-out automation equipment of sheet metal down, comprises generating device of laser, automatic forming device and control device; Described generating device of laser is made up of laser controller, generating laser and optical fiber; Described automatic forming device moves chuck, base, varying magnetic field device, rotating disk multistation device, integrated of restraint layer-film flying, restraint layer-film flying integrated warehouse, retracting device by end cap, focusing drawtube, body, little stamping-out workbench, three-dimensional and forms; Described control device is made up of computer, laser controller, three-dimensional mobile platform controller and stepper motor driver;
Described control device is coordinated control generating device of laser and each module of automatic forming device; Described laser controller is connected with nano laser with computer respectively; Described optical fiber connects the generating laser of laser generating system and the end cap of automatic forming system respectively; In the automatic forming internal system, the fixedly connected focusing drawtube of end cap; The fixedly connected body of focusing drawtube; The fixedly connected base of body; Accept little stamping-out workbench on the described base, also connect the varying magnetic field device below the base; Described three-dimensional moves chuck and connects firmly the three-dimensional mobile platform by optical axis, and platform is connected with three-dimensional mobile platform controller; Described rotating disk multistation device transmits integrated of restraint layer-film flying by rotating disk between integrated warehouse of restraint layer-film flying, retracting device and little stamping-out workbench, and the power transmission shaft of rotating disk multistation device is driven the connection stepper motor driver by stepper motor; Described computer is connected with laser controller, stepper motor driver, three-dimensional mobile platform controller and varying magnetic field device respectively.
Further, integrated device of described restraint layer-film flying is made up of chase, restraint layer and film flying three parts; Film flying is fitted in the centre position of restraint layer, and restraint layer embeds among the chase, and restraint layer is not fitted the one side of film flying towards chase, and restraint layer embeds the degree of depth of chase less than the thickness of restraint layer.
Further, described varying magnetic field device is made up of coil, bracing frame, current controller and power interface; Computer connects current controller, break-make and the power of control electric current, thus make coil produce controllable magnetic field; The chase that magnetic field acts on integrated of restraint layer-film flying produces the magnetic force be directed downwards, and described magnetic force serves as the pressure-pad-force in little punching process that laser indirect impacts sheet metal down.
Further, described little stamping-out workbench by mould cushion block, little blanking die, fly die cavity, elastomer and fly the die cavity guide rail to form; The mould cushion block is fixedly mounted on base central authorities; Little blanking die is fixedly mounted on mould cushion block central authorities; Fly the utilization of die cavity guide rail and be installed on mould cushion block one side, elastomer is housed on it and flies die cavity; An end that flies die cavity has draw-in groove, is installed among the guide rail; Elastomer is installed in the bottom that flies to fly in the die cavity guide rail die cavity draw-in groove.
Further, the thickness of described mould cushion block is 1 ㎜-10 ㎜, and single use or a plurality of stack are used together; Fly die cavity thickness and determine according to required technological parameter, fly die cavity and have rigidity; Flying the die cavity lumen pore can be rectangle or circle.
Further, described little blanking die is of a size of 20 ㎜ * 30 ㎜ * 10 ㎜, is down " recessed " word shape, and the upper face center position is useful on little feature structure of shaping, namely utilizes picosecond laser to process little punching and blanking die hole; Be processed with two screwed holes on the mould upper surface diagonal, little blanking die is fastened on the mould cushion block; The shape in die hole determines that according to the part shape that will process the aperture is up-narrow and down-wide, and the length in die hole is shorter; Little blanking die groove sectional dimension is 7 ㎜ * 10 ㎜.
Laser indirect impacts the little blanking method of automation of sheet metal down, specifically comprises the steps:
A, with optical fiber laser is imported the automatic forming system from generating laser;
B, utilize focusing drawtube to regulate the technological parameter defocusing amount;
C, the saving of integrated warehouse device of restraint layer-film flying have integrated of tens of restraint layer-film flyings; In each work step, rotating disk multistation device takes out a restraint layer-film flying integrated slice from restraint layer-film flying integrated warehouse device at first station, second station is integrated deposit of restraint layer-film flying station, and the 3rd station is also with integrated upper position that is delivered to little stamping-out workbench of a restraint layer-film flying simultaneously; After little stamping-out process of finishing a following sheet metal of laser indirect impact, rotating disk rotates under the driving of stepper motor, change integrated of a new restraint layer-film flying, integrated of restraint layer-film flying that while the 4th station will have been used is sent in integrated retracting device of restraint layer-film flying, so finishes the four stations transmission of integrated of restraint layer-film flying;
D, when integrated of the restraint layer-film flying that upgrades is positioned at the 3rd station of rotating disk multistation device, computer control varying magnetic field device produces magnetic field, chase to integrated of restraint layer-film flying partly produces magnetic field suction, thereby make integrated of restraint layer-film flying compress downwards, the pressure-pad-force in the little punching process of sheet metal under the laser indirect impact namely is provided;
E, laser project the centre position of integrated of restraint layer-film flying by focusing drawtube, finish laser indirect then and impact little punching process process of sheet metal down.
F, finish after stamping-out, computer control varying magnetic field device is closed the magnetic field effect, thus the unloading pressure-pad-force; Rotating disk multistation device turns to next station; Three-dimensional moves the chuck clamping and plate workpiece realization feeding; Whole automation process is coordinated control by computer, enters next little stamping-out cycle thus.
The invention has the beneficial effects as follows:
The present invention adopts pulse laser as the shaping power source, the energy that is carried out luminous energy and mechanical energy by integrated device of restraint layer-film flying transforms, and adopt a series of reliable methods to realize that pulse laser drives the automation that film flying loads little punching process of thin plate, can carry out high efficiency, the production in enormous quantities of the little blanking part of metal thus; The automatic forming system is relatively independent, and machining accuracy is not subjected to external disturbance, and overall process coordinates to have avoided human error by control system; Laser optical path and little stamping-out workbench all are accommodated within the body, have promoted the security of experimental implementation.
Description of drawings
Fig. 1 is that laser indirect of the present invention impacts the structural representation of little stamping-out automation equipment of sheet metal down;
Fig. 2 is the structural representation of integrated of restraint layer-film flying;
Fig. 3 is integrated cross-sectional view along A-A line among Fig. 2 of restraint layer-film flying;
Fig. 4 is the structural representation of rotating disk multistation device;
Fig. 5 is the plane structure chart of varying magnetic field device;
Fig. 6 is the structural representation of little stamping-out workbench;
Fig. 7 is little blanking die cross-sectional view;
Fig. 8 is the three-dimensional structure diagram of little blanking die;
Fig. 9 is little blanking part schematic diagram.
Among the figure: 1, varying magnetic field device; 2, base; 3, three-dimensional moves chuck; 4, little stamping-out workbench; 5, body; 6, focusing drawtube; 7, end cap; 8, optical fiber; 9, generating laser; 10, laser controller; 11, computer; 12, stepper motor driver; 13, three-dimensional mobile platform controller; 14, integrated warehouse device of restraint layer-film flying; 15, restraint layer-film flying is integrated; 16, integrated retracting device of restraint layer-film flying; 17, rotating disk multistation device; 18, optical axis; 19, chase; 20, restraint layer; 21, film flying; 22, coil; 23, bracing frame; 24, current controller; 25, power interface; 26, mould cushion block; 27, little blanking die; 28, fly die cavity; 29, elastomer; 30, fly the die cavity guide rail; 31, first station; 32, second station; 33, the 3rd station; 34, the 4th station.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
The structure of little stamping-out automation equipment of sheet metal comprised generating device of laser, automatic forming device and control device as shown in Figure 1 under laser indirect of the present invention impacted.
Generating device of laser is made up of laser controller 10, generating laser 9 and optical fiber 8; Automatic forming device moves chuck 3, base 2, varying magnetic field device 1, rotating disk multistation device 17, integrated 15 of restraint layer-film flying, integrated warehouse 14 of restraint layer-film flying, retracting device 16 by end cap 7, focusing drawtube 6, body 5, little stamping-out workbench 4, three-dimensional and forms; Control device is made up of computer 11, laser controller 10, three-dimensional mobile platform controller 13 and stepper motor driver 12.
Control device is coordinated control laser generating system and each module of automatic forming system; Described laser controller 10 is connected with nano laser 9 with computer 11 respectively; Described optical fiber 8 connects the generating laser 9 of laser generating system and the end cap 7 of automatic forming system respectively; In automatic forming device inside, end cap 7 connects the built-in lens of focusing drawtube 6(), use the straight pin location between the end face; Focusing drawtube 6 connects body 5 again, utilizes the guide pin bushing location between focusing drawtube and casing; Body 5 connects base 2, and contact-making surface utilizes the straight pin location; Accept little stamping-out workbench on the described base 2, also connect varying magnetic field device 1 below the base 2; Described three-dimensional moves chuck 3 and connects firmly the three-dimensional mobile platform by optical axis 18, and platform is connected with three-dimensional mobile platform controller 13, thereby realizes the feeding of workpiece; The structure of rotating disk multistation device 17 as shown in Figure 4, between integrated warehouse 14 of restraint layer-film flying, retracting device 16 and little stamping-out workbench 4, transmit restraint layer-film flying integrated 15 by rotating disk, and the power transmission shaft of rotating disk multistation device 17 is driven by stepper motor, connects stepper motor driver 12.Described computer 11 is connected with laser controller 10, stepper motor driver 12, three-dimensional mobile platform controller 13 and varying magnetic field device 1 respectively, thereby control is coordinated in the automation that has realized Laser emission, restraint layer-film flying integrated transmission, workpiece feeding and magnetic force pressure-pad-force.
For generation of the structure of the integrated device of restraint layer-film flying of pressure-pad-force (cooperate with varying magnetic field device) as shown in Figures 2 and 3, formed by chase 19, K9 glass restraint layer 21 and film flying 20 3 parts.Film flying 20 is fitted in the centre position of K9 glass restraint layer 21, K9 glass restraint layer 21 embeds among the chase 19, K9 glass restraint layer 21 is not fitted the one side of film flying 20 towards chase, and the degree of depth that K9 glass restraint layer 21 embeds chases 19 is 1 millimeter, less than the thickness of K9 glass restraint layer 21.
Realize for generation of controllable magnetic field pressure-pad-force control (integrated of fiting constraint layer-film flying) varying magnetic field device 1 structure as shown in Figure 5, formed by coil 22, bracing frame 23, current controller 24 and power interface 25.Computer 11 connects current controller 21, break-make and the power of control electric current, thus make coil produce controllable magnetic field.The chase 19 that magnetic field acts on integrated 15 of restraint layer-film flying produces the magnetic force that is directed downwards, and this magnetic force serves as the pressure-pad-force in little punching process that laser indirect impacts sheet metal down, has finally realized the automation control to pressure-pad-force.
Be used for the processing metal thin plate little stamping-out workbench 4 structure as shown in Figure 6, by mould cushion block 26, little blanking die 27, fly die cavity 28, elastomer 29 and fly die cavity guide rail 30 to form.Mould cushion block 26 is installed in base 2 central authorities, utilizes bolt connection, taper bolt location; Little blanking die 27 is installed in mould cushion block 26 central authorities, with the fastening relative position of dog screw; Fly die cavity guide rail 30 and utilize screw to be installed on mould cushion block 26 1 sides, elastomer 29 is housed on it and flies die cavity 28; Fly an end of die cavity 28 band draw-in grooves, be installed among the guide rail; Elastomer 29 is installed in the bottom that flies to fly in the die cavity guide rail 30 die cavity 28 draw-in grooves.In whole device, connect the surface and all have very high flatness, wherein on mould cushion block 26 specifications different thickness can be arranged, be specially between 1 ㎜-10 ㎜, can a plurality of stacks use together, the lower surface that grinds, polishes the mould cushion block can be finely tuned the levelness of workbench.The dimensions of little blanking die 27 is: 20 ㎜ * 30 ㎜ * 10 ㎜, upper face center is processed with micrometer-class, is used for being shaped.Fly die cavity 28 thickness and determine according to required technological parameter, about general 0.1 ㎜, fly die cavity and need have certain rigidity.Flying the die cavity lumen pore can be rectangle or circle, is of a size of about diameter 3.5 ㎜.Load in the process of pressure-pad-force at magnetic force, integrated 15 of restraint layer-film flying is subjected to Magnetic force tracting downward, will fly die cavity 28, Work-sheet pressing successively on little blanking die 27.After the laser pulse, magnetic force unloading, elastomer 29 impels and flies die cavity 28 and integrated 15 of restraint layer-film flying upwards replied, workpiece three-dimensional move chuck 3 advance under feeding again, prepare next forming period.
The structure of little blanking die 27 as shown in Figure 7 and Figure 8, it is of a size of 20 ㎜ * 30 ㎜ * 10 ㎜, is down " recessed " word shape, the upper face center position is useful on little feature (micron order) of shaping: utilize picosecond laser to process little punching and blanking die hole; In addition, be processed with two screwed holes on the mould upper surface diagonal, by dog screw little blanking die 27 be fastened on the mould cushion block 26.The shape in die hole determines that according to the part shape that will process the aperture is up-narrow and down-wide, and the length in die hole lacks (about 3 ㎜), is convenient to collect blanking.Little blanking die 27 groove sectional dimensions are 7 ㎜ * 10 ㎜, in the stamping-out process, can insert collection blankings (micron order) such as paper groove.Workpiece structure behind little stamping-out as shown in Figure 9.
Laser indirect of the present invention impacts the little blanking method of automation of sheet metal down, specifically comprises the steps:
A. with optical fiber 8 laser is imported the automatic forming system from generating laser 9.
B. utilize the built-in lens of focusing drawtube 6() adjusting technological parameter defocusing amount.
C. integrated warehouse device 14 savings of restraint layer-film flying have integrated 15 of tens of restraint layer-film flying; In each work step, rotating disk multistation device 17 takes out a restraint layer-film flying integrated slice 15 from restraint layer-film flying integrated warehouse device 14 at first station 31, and the 3rd station 33 is also with integrated 15 upper position that is delivered to little stamping-out workbench 4 of a restraint layer-film flying simultaneously.After little stamping-out process of finishing a following sheet metal of laser indirect impact, rotating disk is 17 rotations under the driving of stepper motor, change integrated 15 of a new restraint layer-film flying, simultaneously integrated 15 of restraint layer-film flying will having used of the 4th station 34 sent in integrated retracting device 16 of restraint layer-film flying, so finishes the four stations transmission of integrated 15 of restraint layer-film flying.Wherein first station 31, second station 32, the 3rd station 33, the 4th station 34 are four stations of this device, respectively the operating position of integrated warehouse device of corresponding restraint layer-film flying, deposit station, little stamping-out workbench, integrated retracting device of restraint layer-film flying.
D. when integrated 15 of the restraint layer-film flying that upgrades is positioned at the 3rd station 33 of rotating disk multistation device 17 (on little stamping-out workbench), computer 11 control varying magnetic field devices 1 produce magnetic field, chase to integrated 15 of restraint layer-film flying partly produces magnetic field suction, thereby make integrated 15 of restraint layer-film flying compress downwards, the pressure-pad-force in the little punching process of sheet metal under the laser indirect impact namely is provided.
E. laser is by the built-in lens of focusing drawtube 6() project the centre position of integrated 15 of restraint layer-film flying, finish laser indirect then and impact little punching process process of sheet metal down.Finish after stamping-out, computer 11 control varying magnetic field devices 1 are closed the magnetic field effect, thus the unloading pressure-pad-force; Rotating disk multistation device 17 turns to next station; Three-dimensional moves chuck 3 clampings and plate workpiece realization feeding.Whole automation process is coordinated control by computer 11, enters next little stamping-out cycle thus.
In this device, computer 11 belongs to the man-machine interaction window, whole production processing all control requirement is also preserved in the middle of importing computer by the operator, computer 11 has connected laser controller 10, three-dimensional mobile platform controller 13, stepper motor driver 12 and varying magnetic field device 1 again respectively, has formed the control system of this device.Wherein 9 pairs of laser parameters of laser controller 10 control generating lasers are adjusted; The movement of three-dimensional mobile platform controller 13 control Workpiece clamping heads 3, thereby the feeding of realization plate workpiece; Stepper motor in integrated warehouse device 14 of stepper motor driver 12 difference connection constraints layer-film flyings, integrated retracting device 16 of restraint layer-film flying and the rotating disk multistation device 17 drives corresponding component and realizes automation; Varying magnetic field device 1 directly is connected with computer 11, by the break-make of computer 11 control electromagnet coil currents, thereby realizes producing magnetic field and the control of removing magnetic field.
At first, according to production requirement little stamping-out workbench is installed, little stamping-out workbench uses different moulds according to the difference of selected little punching process, and frame is adorned flight cavity on mould.The plate Workpiece clamping head 3 that connects firmly on the three-dimensional mobile platform clamps workpiece, and finishes the plate feeding before the laser-impact each time;
Then, integrated 15 of restraint layer-film flying by rotating disk multistation device 17 at integrated warehouse device 14 of restraint layer-film flying, transmit between 16 3 parts of integrated retracting device of little stamping-out workbench 4 and restraint layer-film flying, rotating disk multistation device has four stations, integrated warehouse device of restraint layer-film flying, integrated retracting device of little stamping-out workbench and restraint layer-film flying impacts the position that is in a station constantly respectively at pulse laser, and integrated of the restraint layer-film flying on it is finished respectively and is got sheet, the process of conversion laser energy and recovery, the another one station is between integrated warehouse device of restraint layer-film flying and the little stamping-out workbench station, and integrated of restraint layer-film flying will be at next process-cycle transfer stamping-out operating position in a subtle way on it.
Simultaneously, produce magnetic field by 1 control of varying magnetic field device, magnetic field produces downward graviational interaction to the integrated chase 19 of restraint layer-film flying, thereby compresses integrated of restraint layer-film flying, flight cavity, plate workpiece and little blanking die successively, also namely loads pressure-pad-force.
Again, laser is introduced the automation formation system by optical fiber from laser generator 9.Laser is injected by top end cap 7 in the automation formation system, project the middle position of integrated 15 of restraint layer _ film flying on little stamping-out workbench after focusing on through the lens of focusing drawtube 6, just K9 glass restraint layer 21 centre position of the film flying side of not fitting;
At last, pulse laser impacts film flying, and energy transforms, and film flying bump sheet metal is finished the once-forming process with little blanking die.
After the pulsatile once laser-impact, the varying magnetic field device is removed the magnetic field effect, also just pressure-pad-force is unloaded; Rotating disk multistation device rotates and replaces integrated of restraint layer-film flying then, and the plate chuck that connects the three-dimensional mobile platform moves finishes the plate feeding, and system enters the state in the next pulse laser-impact cycle of awaiting orders.
The present invention has realized that first laser indirect impacts the automation of the little punching process of sheet metal down, proposed to utilize magnetic force as the pressure-pad-force of restraint layer in the little punching process of sheet metal under the laser indirect impact, realized that by the control to electromagnet the pressure-pad-force automation loads and unloading; In addition, laser optical path and little stamping-out workbench all are accommodated within the body, not only promote the security of experimental implementation but also made light path in the technology the assembly precision of positivity by formation system itself determined, avoided being subjected to the interference of external factor, and made repetitive operation fast accurate simultaneously.This device is made up of laser generating system, automatic forming system and control system three parts.Laser generating system output pulse laser, and through optical fiber coupling input automatic forming system, scioptics focus on little stamping-out workbench then; Thereby accurately regulate the position realization of lens vertical direction to the control of defocusing amount by focusing drawtube; Clamp the feeding of workpiece band realization workpiece by the clamping device that connects firmly on the three-dimensional mobile platform; Realized the replacement of integrated of restraint layer-film flying by rotating disk multistation device and integrated warehouse of restraint layer-film flying, retracting device; , by the generation of varying magnetic field device controlling magnetic field whether magnetic field produces pressure-pad-force to the sucking action of integrated chase of restraint layer-film flying.Coordinated the action of the variation in rotation, magnetic field of driving, the rotating disk multistation device of emission, the three-dimensional mobile platform of control impuls laser and integrated warehouse of restraint layer-film flying, retracting device in the whole process by computer.This device can be used for quick, the mass production of little blanking part.
The above only is preferred embodiment of the present invention, not in order to limit the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. laser indirect impacts little stamping-out automation equipment of sheet metal down, it is characterized in that: comprise generating device of laser, automatic forming device and control device; Described generating device of laser is made up of laser controller (10), generating laser (9) and optical fiber (8); Described automatic forming device moves chuck (3), base (2), varying magnetic field device (1), rotating disk multistation device (17), restraint layer-film flying integrated (15), integrated warehouse of restraint layer-film flying (14), retracting device (16) by end cap (7), focusing drawtube (6), body (5), little stamping-out workbench (4), three-dimensional and forms; Described control device is made up of computer (11), laser controller (10), three-dimensional mobile platform controller (13) and stepper motor driver (12);
Described control device is coordinated control generating device of laser and each module of automatic forming device; Described laser controller (10) is connected with nano laser (9) with computer (11) respectively; Described optical fiber (8) connects the generating laser (9) of laser generating system and the end cap (7) of automatic forming system respectively; In the automatic forming internal system, the fixedly connected focusing drawtube of end cap (7) (6); The fixedly connected body of focusing drawtube (6) (5); The fixedly connected base of body (5) (2); Accept little stamping-out workbench on the described base (2), also connect varying magnetic field device (1) below the base (2); Described three-dimensional moves chuck (3) and connects firmly the three-dimensional mobile platform by optical axis (18), and platform is connected with three-dimensional mobile platform controller (13); Described rotating disk multistation device (17) transmits integrated of restraint layer-film flying (15) by rotating disk between integrated warehouse of restraint layer-film flying (14), retracting device (16) and little stamping-out workbench (4), and the power transmission shaft of rotating disk multistation device (17) is driven by stepper motor, connects stepper motor driver (12); Described computer (11) is connected with laser controller (10), stepper motor driver (12), three-dimensional mobile platform controller (13) and varying magnetic field device (1) respectively.
2. laser indirect according to claim 1 impacts little stamping-out automation equipment of sheet metal down, and it is characterized in that: integrated device of described restraint layer-film flying is made up of chase (19), restraint layer (21) and film flying (20) three parts; Film flying (20) is fitted in the centre position of restraint layer (21), restraint layer (21) embeds among the chase (19), restraint layer (21) is not fitted the one side of film flying (20) towards chase, and restraint layer (21) embeds the degree of depth of chase (19) less than the thickness of restraint layer (21).
3. laser indirect according to claim 1 impacts little stamping-out automation equipment of sheet metal down, and it is characterized in that: described varying magnetic field device (1) is made up of coil (22), bracing frame (23), current controller (24) and power interface (25); Computer (11) connects current controller (21), break-make and the power of control electric current, thus make coil produce controllable magnetic field; The chase (19) that magnetic field acts on restraint layer-film flying integrated (15) produces the magnetic force be directed downwards, and described magnetic force serves as the pressure-pad-force in little punching process that laser indirect impacts sheet metal down.
4. laser indirect according to claim 1 impacts little stamping-out automation equipment of sheet metal down, it is characterized in that: described little stamping-out workbench (4) by mould cushion block (26), little blanking die (27), fly die cavity (28), elastomer (29) and fly die cavity guide rail (30) to form; Mould cushion block (26) is fixedly mounted on base (2) central authorities; Little blanking die (27) is fixedly mounted on mould cushion block (26) central authorities; Fly die cavity guide rail (30) and be installed on mould cushion block (26) one sides, elastomer (29) is housed on it and flies die cavity (28); An end that flies die cavity (28) has draw-in groove, is installed among the guide rail; Elastomer (29) is installed in the bottom that flies to fly in the die cavity guide rail (30) die cavity (28) draw-in groove.
5. laser indirect according to claim 4 impacts little stamping-out automation equipment of sheet metal down, and it is characterized in that: the thickness of described mould cushion block (26) is 1 ㎜-10 ㎜, and single use or a plurality of stack are used together; Fly die cavity (28) thickness and determine according to required technological parameter, fly die cavity and have rigidity; Flying the die cavity lumen pore can be rectangle or circle.
6. impact little stamping-out automation equipment of sheet metal down according to claim 4 or 5 described laser indirects, it is characterized in that: described little blanking die (27) is of a size of 20 ㎜ * 30 ㎜ * 10 ㎜, be down " recessed " word shape, the upper face center position is useful on little feature structure of shaping, namely utilizes picosecond laser to process little punching and blanking die hole; Be processed with two screwed holes on the mould upper surface diagonal, little blanking die (25) is fastened on the mould cushion block (24); The shape in die hole determines that according to the part shape that will process the aperture is up-narrow and down-wide, and the length in die hole is shorter; Little blanking die (27) groove sectional dimension is 7 ㎜ * 10 ㎜.
7. laser indirect impacts the little blanking method of automation of sheet metal down, specifically comprises the steps:
A, usefulness optical fiber (8) import the automatic forming system with laser from generating laser (9);
B, utilize focusing drawtube (6) to regulate the technological parameter defocusing amount;
C, integrated warehouse device of restraint layer-film flying (14) saving have integrated of tens of restraint layer-film flyings (15); In each work step, rotating disk multistation device (17) takes out integrated of a restraint layer-film flying (15) at first station (31) the integrated warehouse device (14) from restraint layer-film flying, second station (32) is integrated of restraint layer-film flying deposit station, and the 3rd station (33) also is delivered to a restraint layer-film flying integrated (15) upper position of little stamping-out workbench (4) simultaneously; After little stamping-out process of finishing a following sheet metal of laser indirect impact, rotating disk is (17) rotation under the driving of stepper motor, change new integrated of a restraint layer-film flying (15), restraint layer-film flying integrated (15) that while the 4th station (34) will have been used is sent in the integrated retracting device of restraint layer-film flying (16), so finishes the four stations transmission of restraint layer-film flying integrated (15);
D, when the restraint layer-film flying integrated (15) that upgrades is positioned at the 3rd station (33) of rotating disk multistation device (17), computer (11) control varying magnetic field device (1) produces magnetic field, chase to restraint layer-film flying integrated (15) partly produces magnetic field suction, thereby make restraint layer-film flying integrated (15) compress downwards, the pressure-pad-force in the little punching process of sheet metal under the laser indirect impact namely is provided;
E, laser project the centre position of restraint layer-film flying integrated (15) by focusing drawtube (6), finish laser indirect then and impact little punching process process of sheet metal down;
F, finish after stamping-out, computer (11) control varying magnetic field device (1) is closed the magnetic field effect, thus the unloading pressure-pad-force; Rotating disk multistation device (17) turns to next station; Three-dimensional moves chuck (3) clamping and plate workpiece realization feeding; Whole automation process is coordinated control by computer (11), enters next little stamping-out cycle thus.
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