The numerical control of common lathe is transformed reach treatment process designing

The numerical control of bed of 1 general be open to traffic changes the numerical control that transforms design machine tool to transform, basically be the design that undertakes creativity to the structure of original machine tool, make the machine tool obtains better position finally. Numerical control lathe is the typical delegate of Electromechanical unifinication, its machinery structure has the place of a lot of likeness with common machine tool. However, contemporary numerical control machine tool is not simple will traditional machine tool is deployed go up numerical control system can, also not be to be on the foundation of traditional machine tool, ministry of play a game of chess tries to improve and become only (those suffer the condition such as capital to restrict, and will traditional machine tool changes his costume or dress of machine tool of proposal numerical control should fasten additionally by) . Traditional machine tool is existing a few weaknesses, if tigidity is insufficient, fight brace up sexual difference, heat is out of shape clearance exists to wait between the attrition block muscularity of big, slip face and transmission component, be competent hard numerical control machine tool is right the requirement such as quality of treatment precision, surface, productivity and service life. Modern numerical control technology, especially machining center, no matter be its bearing component, advocate the component structure such as transmission system, feed transmission system, cutting tool system, auxiliary function, still be integral layout, exterior modelling had produced very big change, had formed the distinctive and rigid structure of numerical control machine tool. Accordingly, in the process that we are having numerical control is transformed to general accuracy machine tool, should considering all sorts of circumstances to fall, make the each function index of general accuracy machine tool connects as far as possible with numerical control machine tool close. 2.

The choice of the function of lathe of 2 numerical control and precision is not all old machine tool can undertake numerical control transform, of the machine tool transform basically should have two requirements: The first, machine tool foundation must have enough tigidity. The 2nd, transformed expense wants appropriate, economy is good. Changing his costume or dress before lathe, want to make a decision to the function index of the machine tool. The diameter of the biggest circumgyrate that the lathe after changing one's costume or dress can process work and the biggest length, advocate electromotor power won't change commonly. The flatness that processes work, linearity, cylinder is spent and surface roughness still basically decide at machine tool itself original standard. The choice that basically has undermentioned function and precision needs to decide before change one's costume or dress. Limits of method of ① axis gearshift, progressional, rotate speed, power and whether to need numerical control apply the brake to jockey etc. ② feed moves: Feed speed: Z to (it is 8 ～ 400mm/min) normally; X to (it is 2 ～ 100 Mm/min) normally. Move quickly: Z to (it is normally 1.

2 ～ 4m/min) ; X to (it is normally 1.

2 ～ 3m/min) . Pulse equivalent: In 0.

025 ～ 0.

Choose inside 005mm, normally Z to for X to 2 times. Machine pitch limits: Include to be able to process pitch type (the) such as section of metric, imperial, modulus, diameter and awl whorl, general pitch is in 10mm less than is not inaccessible. Means of drive of ③ feed motion (choose a pace to enter) of electric machinery drive commonly. Whether does ④ need to change his costume or dress to athletic drive drive of ball guide screw. Whether does ⑤ tool carrier need to configure automatic dislocation tool carrier, if configuration needs certain class digit. Index of ⑥ other property chooses: Interpolation function: Lathe treatment needs to have mix point-blank function of circular arc interpolation. Cutting tool compensation and clearance compensate: To assure certain treatment precision, need to consider to install a knife to fill to compensate a function with clearance commonly. Show: Using a number to be in charge of still is liquid crystal or monitor shows, indication digit more or less to wait for a problem to want to machine a function to need actually to decide according to lathe, generally speaking, show simpler cost is lower, come true easily also. Diagnostic function: The program that inputs to prevent handlers is wrong with the wrong action that appears subsequently, necessary parts of an apparatus and software can be joined when numerical control transforms a system to design, make its can indicate a machine tool occurrence trouble or the part of functional invalidation, realize finite diagnostic function. Above is the index of a few current performance that the consideration needs when lathe numerical control is transformed, some lathe transform a basis to need to return a little can technical requirement, if turning is big what work below harsh environment is pitch whorl, dustproof high accuracy of interference, lathe tool is right the knife, this moment is due the special design of specific aim. 2.

3 lathe numerical control transforms plan to wait for content when the function of numerical control lathe and precision after basic make choice of, can transform program certainly according to this. At present machine tool numerical control transforms a technology to had matured with each passing day, special the convention that the machine tool numerical control that turn transforms the property that systematic place has and function to all can satisfy lathe commonly machines a requirement. Accordingly, more typical lathe numerical control transforms plan to be able to choose to be: Configure special lathe numerical control to transform a system, change the drive of slip guide screw that feed moves is drive of ball guide screw, use a pace to enter feed of electric machinery drive function of thread machining of implementation of generator of pulse of motion, configuration, configuration is automatic implementation of dislocation tool carrier is automatic the function that change a knife. At present numerical control of more typical economy special lathe transforms a system to have following and basic configuration and function: ① uses sheet piece personal computer is given priority to accuse CPU, have be compensated with process designing of circular arc interpolation, code, cutting tool point-blank and clearance compensation function, number is in charge of 2 coordinate to show at the same time, the control function such as control of automatic dislocation tool carrier, thread machining. ② deserves to the pace takes system of electric machinery drive, pulse equivalent or control precision are commonly: Z is 0.

01mm, x to for 0.

005mm(wants to cover) suitably with the guide screw of corresponding lead. Machine program relies on ③ mostly input of face plate key-press, code work out, drop report to protect memory memory automatically; Can undertake to the program the spot edits to revise and try moving operation. ④ has odd situation or continuous executive program, loop carries out position of program, mechanical maximum automatic spacing, exceed Cheng to call the police, and feed career program is stopped automatically wait for of all kinds number to control basic function. The 　 of treatment process designing of lathe of 3 numerical control 3.

Method of process designing of 1 method numerical control has manual process designing and automatic process designing two kinds. Manual process designing is to show from part drawing appearance analyses craft computation of processing, data, write program of program sheet, input to wait for each measure to basically have the process designing process that completes artificially to course desired result. It applies to the treatment that orders the part with a treatment or geometrical not quite complex form, and calculation is simpler, block is not much, the circumstance that process designing realizes easily. But complex to geometrical appearance part (especially the spare parts) that dimensional curved surface comprises, and geometrical element is not complex but need to weave the program measures very large part, because process designing chronometer considers numeric job quite trival, workload is big, make mistake easily, course desired result is more difficult also, finish hard with manual process designing, because this should use automatic process designing. Alleged and automatic process designing namely the much that to program works or entirely the computer is finished, can solve the treatment problem of complex part effectively, also be the development trend of future of numerical control process designing. In the meantime, also want to see manual process designing is the foundation of automatic process designing, a lot of core experience in automatic process designing originate manual process designing, both supplements each other. 3.

2 measure answer part drawing paper to analyse above all, machine process certainly, the treatment method that also decides a part namely (place the) such as location method like adoption labour clamping apparatus, outfit, machine a course (like feed course, right the knife dot, dot that change a knife) reach craft parameter (mix like speed of rotate speed of feed speed, main shaft, cutting the) such as cutting deepness. Should have numeric consideration next. System of majority numerical control contains knife filling function, the node that requires element of geometry of adjacent of computational outline photograph only (or point of tangency) coordinate value, reach the coordinate of the centre of a circle of the start terminus of each geometry element and circular arc is worth can. Finally, the value of coordinate of contrail of cutting tool motion that gives according to computation and affirmatory already treatment parameter reach auxiliary action, system of combinative numerical control sets use coordinate instruction code and block pattern, chase paragraph write sheet of spare parts machine program, in the memory that inputs CNC device. The product that with general accuracy machine tool treatment comes out lacks competition ability on international, home market, affect the product of an enterprise, market, beneficial result directly, affect a business live and develop, the numerical control that because this is necessary,improves a machine tool is changed rate. CNC Milling CNC Machining