Algorithm of processing of postposition of machine tool of 5 axes numerical control studies double revolving stage

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Numerical control process designing is one of segment that beneficial result can produce apparently most in CAD/CAM system. To complex form spare parts, numerical control process designing uses system of automatic process designing normally, realizing design, treatment automation, improve treatment precision and treatment quality, shorten the respect such as product development cycle is producing main effect. Postposition handles one of crucial technologies that are technology of numerical control process designing, regard CAD/CAM as system and ligament of mechanical production connective. The moving dependability that postposition handles the treatment quality that affects the use effect of automatic process designing, part directly and machine tool. Abroad handles a technology to consider to take seriously very to postposition, manufacturer of each CAD/CAM software considered to develop respective general postposition processing system; Home handled theory and technology to also have thorough research to postposition, obtained certain research positive result. But, the user of system of a lot of CAD/CAM is at present right of software using basically is CAD module, fast to CAM model application efficiency is not tall, among them a crucial reason is software deploys general postposition to handle only and the characteristic of numerical control machine tool with specific without the basis user has 2 necessary development, the code that generates from this still needs to be done artificially revise in great quantities, affected the applied result of CAM module badly. The coordinate changeover that studies specific structure machine tool is to develop this kinds of machine tool a crucial technology that program of special postposition processing must solve. In labor double revolving stage 5 number of axle accuse machine tool coordinate is the article reach kinematic foundation to go up, derivation gives postposition of this kinds of machine tool to handle corner computation formula, coordinate to change computational formula, development goes UCP600 special postposition of machine tool of 5 axes numerical control handles an order, machine the complex part such as a style of inertial platform stage, the method that proved the article puts forward is feasible. One, when postposition handles the action of the program to undertake process designing with CAD/CAM software, all inspect workpiece to be not moved by the regulation, and by cutting tool campaign completes treatment action, course processing is attainable a neuter knife that is not aimed at particular machine tool file. In much axis treatment, the knife that CAD/CAM software generates value of coordinate of cutting tool reference point and cutter shaft vector are included in the file. On actual machine tool, implementation means of motion each different, some motion come true by workbench, some motion come true by cutting tool. In 3 straight bobbin (below circumstance of linkage of X, Y, Z) , process designing member needing to care commonly is workbench motion or cutting tool motion, the coordinate department that because machine tool manufacturer all presses international standard,will define a machine tool and its movement way. The rotor of much axis linkage moves, include cutting tool to swing, workbench circumgyrate, the computation that this asks aftertreatment program undertakes differring in the light of different situation the knife changeover of coordinate of contrail of the cutting tool in the file is machine tool coordinate and corresponding circumgyrate angle, through code changeover changes them into the numerical control program that assigns numerical control machine tool to be able to be carried out. 2, type of double revolving stage the machine tool of machine tool of 5 axes numerical control is kinematic the machine tool that seek solution is kinematic seek solution, the X of 3 mobile coordinate after basically including axis of rotation to rotational goniometer calculates and pass roll, Y, Z is worth seek solution. To the numerical control machine tool that different type exercise concerns, the kinematic algorithm that seek solution is different. Below with formula of more complex double revolving stage 5 number of axle charge a machine tool (graph 1) is exemple will discuss postposition to handle coordinate method of calculation of changeover and circumgyrate angle. The athletic coordinate of machine tool of 5 axes numerical control includes type of double revolving stage X of 3 mobile coordinate, Y, Z and A of 2 rotational coordinate, C, rotor of A, C is handed in at a bit. If the graph is shown 2 times, CAM machines coordinate department to be OmXYZ, the machine tool machines coordinate department to be OrXYZ, workbench C rotor and Z axis direction are consistent, workbench A rotor and X axis direction are consistent, orXYZ coordinate fastens origin to be set on node of rotor of A, C. The direction of the Z axis of OmXYZ of department of CAM treatment coordinate and OrXYZ of department of coordinate of machine tool treatment is consistent, the others 2 axes are mutual and parallel, the computational workbench that OmOr=d workpiece can circle coordinate to fasten corner of A 1 of X axis roll, A, C (workpiece) opposite cutting tool is rotational, its corner is square with the clockwise to. Circle A of cutter shaft vector the axis to arrange hour hand to turn C horn arrives on plane, circle cutter shaft vector Xc axis to arrange hour hand to turn A horn arrives to agree with Zc coordinate direction again, like the graph 2 are shown (such, roll can assure. Completed the transition of cutter shaft vector so, namely the roll of cutting tool photograph to workpiece or swing. To type of double revolving stage 5 number of axle charge a machine tool, to realize above changeover, the movement of workbench circles C rotor to arrange part of hour hand rotational C for workbench, workbench A rotor arranges part of A of hour hand roll. 2, the computation of X of coordinate of machine tool motion, Y, Z begs cutting tool reference point classics workbench (workpiece) coordinate is machined to fasten OrXYZ in the machine tool after roll medium positional coordinate, namely the athletic coordinate X of the machine tool, Y, Z. (1) machines CAM coordinate to fasten OmXYZ translation to the machine tool to machine coordinate to fasten OrXYZ, commutation matrix is (vector of 2) cutter shaft circles Z axis to rotate C horn, commutation matrix is (vector of 3) cutter shaft circles X axis to rotate A horn, commutation matrix is criterion type (6) develops the machine tool that can get 5 coordinate to machine athletic coordinate is cutting tool the coordinate that machines coordinate department at the machine tool relatively, is not the coordinate that cutting tool photograph machines coordinate to fasten to CAM, this also is this pace calculative basis. Usually, because CAM machines coordinate to fasten can relatively conveniently shift and setting, to reduce parameter setting and computation go to the lavatory, CAM treatment coordinate fastens OmXYZ and coordinate of machine tool treatment is OrXYZ setting fasten for same coordinate, omOr=d=0 namely. From this, type (7) can simplify for type (8) , i.e. 3, 5 number of axle of setting of department of CAM treatment coordinate and UCP600 charge a machine tool program of special postposition processing comes true 1, department of CAM treatment coordinate installs Dao Weiwen generate relative to CAM coordinate origin and reference axis. The origin that CAM treatment coordinate fastens is the program on the machine tool at 0 o'clock (nod) to the knife, the direction of 3 axes that CAM treatment coordinate fastens is the direction of course of machine tool knife, when the direction that machines coordinate department in affirmatory CAM so and origin position, the real need that ought to machine from the spot sets out, facilitating outfit places the position that assures semifinished product to go up in the machine tool, search to be being mixed treatment. To much axis (4 axes or 5 axes) linkage treatment, as a result of Dao Weiwen data need handles a program to undertake coordinate is changed through postposition, the setting that CAM treatment coordinate fastens needs to reflect information of machine tool share and data. Changeover of coordinate of postposition processing data machines coordinate to fasten coordinate origin and reference axis to undertake around the machine tool, to double revolving stage 5 axes machining center, the machine tool machines coordinate to fasten origin to be set in the node of runner shaft of A, C coming back only, ability realizes the validity of the machine program after data coordinate is changed. To assure to machine coordinate with the machine tool the faculty agrees, origin of coordinate of department of CAM treatment coordinate wants a setting to rotate in edge C axis, be apart from workbench end panel to slant to next runner shaft coming back buy value is in (1) seeing a picture. 2, 5 number of axle of UCP600 charge a machine tool machine tool of 5 axes numerical control belongs to the implementation UCP600 of program of special postposition processing double revolving stage 5 axes machining center, configured Heidenhain430 to control a system. The basis explains executive principle, postposition handles a program to use object-oriented methodological development, use formula (1) , (2) , (8) undertakes coordinate changes partial programming; According to the machine tool control system asks to undertake code changes partial programming. If the graph is shown 3 times,postposition handles flow, the program reads in Dao Weiwen medium data, through coordinate changeover and code changeover, in outputting numerical control program corresponding file. 4, epilogue the double revolving stage with complex to athletic form article machine tool of 5 axes numerical control is kinematic begged solution to undertake relatively detailed discuss, derivation gives postposition of this kinds of machine tool to handle corner computation of computational formula and coordinate changeover is formulary. And realized 5 number of axle of UCP600 charge a machine tool special postposition handles an order. The application that processes the complex part such as style of inertial platform stage on this equipment makes clear, the numerical control program that the program of special postposition processing that the article develops creates can satisfy 5 number of axle of UCP600 to accuse the need that the machine tool machines. 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