CN102837130A

CN102837130A - Weakened laser machining equipment

Info

Publication number: CN102837130A
Application number: CN201110172564XA
Authority: CN
Inventors: 郭荣
Original assignee: TAIHANG CHANGQING AUTOMOTIVE SAFETY EQUIPMENT CO Ltd
Current assignee: TAIHANG CHANGQING AUTOMOTIVE SAFETY EQUIPMENT CO Ltd
Priority date: 2011-06-24
Filing date: 2011-06-24
Publication date: 2012-12-26

Abstract

The invention discloses weakened laser machining equipment which can carry out precise machining on a thin-shell-shaped material. The weakened laser machining equipment comprises a worktable (1) and a three-dimensional movement mechanism arranged on the worktable (1), is characterized in that the three-dimensional movement mechanism is provided with a cutting laser cutter (2) and a measuring device (3); an NC (Numerical Control) processing system (4) and a laser control device (5) are connected with the cutting laser cutter (2) and the measuring device (3) through a communication cable; and a movable operation panel (6) is connected with the driving servo motor of the three-dimensional movement mechanism through a cable. With the adoption of the weakened laser machining equipment, in the machining process of the thin-shell-shaped work piece, deformation is not generated, the work piece is simple to position and the machining precision is high; and the weakened laser machining equipment can perform non-penetrability machining on the work piece with any curve surface in any shape.

Description

The reduction laser process equipment

Technical field:

The present invention relates to a kind of mechanical precise machining equipment, specifically be meant the equipment that utilizes laser the material of required processing to be carried out accurate non-penetration type processing as cutting tool.

Background technology:

Laser is as generally being used as cutting equipment, and the for example cutting of sheet material or on workpiece, hole etc. all is to do the penetrability cutting generally speaking, for example sheet material is cut off or gets out a through hole etc. fully.But in the actual mechanical processing process, often there is the non-cutting that runs through, for example groove of processing on sheet material; Processing a straight-line groove at sheet metal realizes relatively easily; Only need the reciprocating motion of general metal cutter to get final product, but when relative rigidity was not the groove of very high material (like plastics etc.) Surface Machining curve or arbitrary shape, general metal cutter just can't be realized; Particularly the groove of processing arbitrary shape is very difficult on the material with larger area shell shape; In actual industrial, truly have such requirement, for example the inboard of the panel of automotive interior just need process the groove of a closed, in the groove of closed, air bag is housed; When bump took place, the expansive force of air bag tears groove or weak structure makes air bag effusion protection passenger.The panel of above-mentioned automotive interior is exactly shelly, has the large tracts of land flexible material of flexibility, and conventional machining process is difficult to process the consistent groove of the degree of depth, and existing processing method is to utilize the high accuracy mechanical hand to process; A manipulator retainer panel; The cutter counter plate of another manipulator is processed, and the defective of its existence is not only apparatus expensive, and operation is complicated and make processing charges high; And cutter direct contact surface plate can apply certain function power to shell shape panel; Cause the part of panel that little distortion is arranged, and then influence machining accuracy, the Precision Machining problem that therefore solves shell shape material is a problem that urgency is to be solved.

Summary of the invention:

Goal of the invention of the present invention is to disclose a kind ofly can carry out precision machined reduction laser process equipment to shell shape material.

Realize that technical solution of the present invention is following: comprise the three-dimensional motion mechanism that workbench, workbench are provided with; Key is that three-dimensional motion mechanism is provided with cutting laser knife and measurement mechanism; The NC treatment system is connected through communication cable with measurement mechanism with the cutting laser knife with laser control apparatus, and the move operation panel is connected with the driving servomotor of three-dimensional motion mechanism through cable.

Described measurement mechanism is a laser three-dimensional surveying instrument.

Described measurement mechanism is the probe-type measurement mechanism, but it has the needle probes of a upper and lower displacement, and needle probes connects a pressure sensor.

Described measurement mechanism is a ultrasonic wave or soft X-ray sending and receiving apparatus.

Described three-dimensional motion mechanism is a frame structure, and in the motion of workbench surface, X's Y moves on the crossbeam of driven by servomotor moving mass at framework, cutting laser knife and the measurement mechanism of Z on the driven by servomotor moving mass to servo-motor driven framework.

The present invention makes full use of the control technology of prior art and the platform of existing process equipment, integrated control technology, measuring technique and three-dimensional motion mechanism and design the present invention.The principle of the invention is simple; Form one through integrated technology and in to shell shape workpiece process, do not produce distortion, workpiece location simply; Machining accuracy is high; Key is to carry out the non-penetrability processing of arbitrary shape to the workpiece of arbitrary surface, has solved many defectives that prior art exists, for having the new process equipment of practical use.

Description of drawings:

Fig. 1 is the structural representation of the embodiment of the invention.

The specific embodiment:

See also Fig. 1, specific embodiment of the present invention is following: comprise workbench 1, workbench 1 is common stage body with a plane; Its surface has many dovetail grooves, so that the installation of fixture is set, for example general set bolt; Bolt one end places in the dovetail groove; Be placed on the pressing plate or the briquetting of arbitrary shape on the bolt, on pressing plate or the briquetting nut arranged, a plurality of set bolts can be pressed a workpiece to put and are positioned at the workbench surface; Through set bolt moving on dovetail groove, be convenient to press the workpiece of putting different sizes or arbitrary shape; On workbench 1 or the three-dimensional motion mechanism that is provided with of an end; This three-dimensional motion mechanism is provided with cutting laser knife 2 and measurement mechanism 3; NC treatment system 4 is connected with measurement mechanism 3 with cutting laser knife 2 through communication cable with laser control apparatus 5; The communication of realization data double-way, move operation panel 6 is connected with the driving servomotor of three-dimensional motion mechanism through cable; In an embodiment of the present invention, in service at equipment, at first workpiece to be processed is fixed on the surface of workbench 1; Because fixture applies certain pressure to workpiece; Small or the local deformation of workpiece be can cause,, the normal data of input in advance and the shape of cutting to be processed pressed through move operation panel 6 control three-dimensional motion mechanisms simultaneously with the standard size of former workpiece and the NC treatment system 4 of cutting profile to be processed input; Utilize the software control of having deposited on three-dimensional motion mechanism, to draw the path of cutting to be processed and import laser control apparatus 5; Measurement mechanism 3 carries out the path scanning of practical work piece by the instruction performing a programme of laser control apparatus 5 then, and read-out path point cloud is measured the three-dimensional data that is cut the path really of practical work piece (on workbench 1, fixing); And measured data fed back to NC treatment system 4; NC treatment system 4 compares the data of actual measurement and the normal data of former input, draws the three-dimensional deviation on the cutting path, and should the three-dimensional deviation import laser control apparatus 5; Under the instruction of laser control apparatus 5; Three-dimensional motion mechanism motion time cutting laser knife 2 accurately cuts on the practical work piece surface, the control laser intensity, then can be on the practical work piece surface (although part or whole small deformation are arranged) cut out the groove even the through slot of the arbitrary shape of desired depth; For example in the exploitation experimentation, utilize the present invention that the tear line of the air bag on the integral plastics panel of automotive trim is processed, above-mentioned panel surface long-pending very big (for auto vendor provides) and complex-shaped; This tear line can reliably be overflowed when collision appears in automobile for guaranteeing air bag at the inner surface of panel, and the working depth of the tear line on the panel and shape (being cutting path) must be very accurate; If tear line (i.e. the groove of the closed after the processing) is deep mixed; Understand the forfeiture that influence the effusion of air bag and make the effect of air bag, show that through actual experiment the present invention processes above-mentioned tear line has very remarkable advantages; The first is not high to the positioning requirements of workpiece to be processed; As long as be fixed on workbench 1 surface, above-mentioned integral panels has the local compression distortion also can obtain final disposable correction in the three-dimensional actual measurement path deviation in process, and this has greatly made things convenient for process; Avoided using expensive manipulator to process (to avoid the stress deformation of position fixing process); Greatly improved operating efficiency, it is two because existing control technology is very ripe, and the measurement mechanism 3, NC treatment system 4 and the cutting laser knife 2 that use like the present invention all are prior arts; But constitute the very high laser process equipment of a machining accuracy through technology of the present invention integrated (software that comprises use); It three is that equipment input of the present invention greatly reduces, and has wide range of applications when guaranteeing machining accuracy and working (machining) efficiency; Need only adjust the intensity of cutting laser knife 2, just can carry out the cutting processing of the various degree of depth and shape the workpiece of various materials.

The horn of plenty actual scope of application of the present invention; Above-mentioned measurement mechanism 3 can use the Laser Scanning for Thickness Measurement appearance, utilizes continuous laser can obtain the data of three-dimensional cutting path of the practical work piece of workbench 1, also can use the impulse type generating laser to obtain precise time measured data at interval certainly; But because of laser can only straightline propagation; Vertical or when being basically perpendicular to laser optical path, certainty of measurement can be guaranteed when workpiece surface to be measured, if but the pathway surfaces to be measured or to be processed of workpiece when having the part to be not orthogonal to laser optical path; Can increase measure error, then measurement mechanism 3 is the probe-type measurement mechanism; Measurement mechanism 3 is the probe-type measurement mechanism; But it has the needle probes of a upper and lower displacement; The upper and lower displacement amount of needle probes is transferred to NC treatment system 4 after being write down by the probe-type measurement mechanism; And needle probes connects a pressure sensor, and the preset pressure sensor passes the threshold value of the force value come in NC treatment system 4, and the force value that provides when pressure sensor is greater than said threshold value; Then need stop to measure, can avoid probe that workpiece is applied excessive pressure like this and make the surface of the work distortion cause producing new measure error; Described measurement mechanism 3 can also be a ultrasonic wave or soft X-ray sending and receiving apparatus; Then the surfaces externally and internally of workpiece to be processed being made perspectivity measures; Obtain the measured data on more accurate two surfaces; Through the software for calculation in the adjustment NC treatment system 4, then can give laser control apparatus 5 more detailed complicated data, and the cutting speed of service of further control cutting laser knife 2; The thickness of the bottom of the groove after can making workpiece to be processed by laser ablation is more consistent on whole groove, for example can further improve the uniformity of the tear line bottom thickness on the above-mentioned car panel and makes the use of air bag more reliable.

Described three-dimensional motion mechanism can be a frame structure; Y drives framework 8 at workbench 1 apparent motion to servomotor 7; X moves on the crossbeam 11 of servomotor 9 drive movement pieces 10 at framework 8; The cutting laser knife 2 of Z on servomotor 12 drive movement pieces 10 and measurement mechanism 3 motions; Through above-mentioned three-dimensional motion frame structure, can guarantee to cut laser knife 2 and measurement mechanism 3 operation translation with accurately, can not produce new distortion because of the deadweight of cutting laser knife 2 and measurement mechanism 3 and not cause increasing measure error.The present invention is simple in structure; But technological integrated effect is splendid; Solved the technical barrier of the non-penetrability processing of flexible material workpiece, even workpiece has new distortion inaccuracy in the location or in fixing, the present invention also can guarantee the significantly raising of working (machining) efficiency and guarantee machining accuracy.

Claims

1. reduction laser process equipment; Comprise the three-dimensional motion mechanism that workbench (1), workbench (1) are provided with; It is characterized in that three-dimensional motion mechanism is provided with cutting laser knife (2) and measurement mechanism (3); NC treatment system (4) is connected through communication cable with measurement mechanism (3) with cutting laser knife (2) with laser control apparatus (5), and move operation panel (6) is connected with the driving servomotor of three-dimensional motion mechanism through cable.

2. by the described reduction laser process equipment of claim 1, it is characterized in that described measurement mechanism (3) is a laser three-dimensional surveying instrument.

3. by the described reduction laser process equipment of claim 1, it is characterized in that described measurement mechanism (3) is the probe-type measurement mechanism, but it has the needle probes of a upper and lower displacement, needle probes connects a pressure sensor.

4. by the described reduction laser process equipment of claim 1, it is characterized in that described measurement mechanism (3) is a ultrasonic wave or soft X-ray sending and receiving apparatus.

5. by claim 1 or 2 or 3 or 4 described reduction laser process equipments; It is characterized in that described three-dimensional motion mechanism is a frame structure; Y drives framework (8) at workbench (1) apparent motion to servomotor (7); X goes up motion, cutting laser knife (2) and the measurement mechanism (3) of Z on servomotor (12) drive movement piece (10) to servomotor (9) drive movement piece (10) at the crossbeam (11) of framework (8).