The structural characteristic of machining center has those

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Machining center: Be those who contain knife library and the automation of a kind of height that trade knife unit automatically is muti_function numerical control machine tool. Be in Chinese Hong Kong, taiwan and Guangdong generation also have a lot of people to call it computer gong. After workpiece holds clip via on machining center, the number controls a system to be able to control a machine tool to press different process, choose automatically and change cutting tool, rotate speed of main shaft of automatic change machine tool, feed and cutting tool assist function relative to the athletic contrail etc of workpiece, the ordinal workpiece that finish the treatment of foreword of the multitask on a few faces. And have a variety of changing knife or the function that pick a knife, make produce efficiency to rise greatly thereby. Small today what is making up the structural characteristic that introduces machining center for everybody. 1.

) the stiffness of the machine tool is tall, fight brace up the gender is good. To satisfy machining center tall automation, high rate, high accuracy, Gao Ke relies on sexual requirement, the static stiffness of machining center, damp that uses stiffness and rigid structure system is compared prep above general accuracy machine tool (the machine tool of static stiffness; that the machine tool lays the stiffness of an expression to call a machine tool in static strength effect uses next place to behave in dynamic master piece. 2) .

The transmission construction of system of the machine tool is simple, deliver precision tall, rate is rapid. Machining center gearing basically has 3 kinds, namely deputy; of ball guide screw is static press worm - cochlea mother; adds load double gear beforehand - rack. They by servo electric machinery direct drive, leave out gear drive, deliver precision tall, rate is rapid. Average rate can amount to 15m/min, highest can amount to 100m/min; 3) .

Main shaft construction of system is simple, without system of gear case gearshift (special also withhold 1 ～ only 2 class positive drive) . Main shaft power is great, timing range is wide, and but stepless speed regulation. At present the main shaft drive of 95% above uses machining center servo of communication main shaft, speed but from infinitely variable speeds of 10 ～ 20000r/min. The power of servo electric machinery of drive main shaft is general very big, the 1 ～ that is general accuracy machine tool 2 times, because use system of communication servo main shaft, although power of main shaft electromotor is big, but output power and the power that consume actually keep synchronous, nonexistent old horse hauls a car the circumstance of the sort of wasteful electric power, its work efficiency is accordingly highest, look from energy-saving angle, machining center is energy-saving model equipment; 4) .

The slideway of machining center used wear-resisting caustic material and new structure, can long-term maintenance the precision of slideway, below high speed heavy cut, make sure athletic component is not oscillatory, do not crawl the Gao Lingmin in reaching motion is spent when low speed feed. Slideway uses steel guide, quench hardness ≥ HRC, cooperate a face to use with slideway get together 4 fluorine ethylene sticks a layer. The advantage of such processing: A.

Small; B of coefficient of friction.

Wearability good; C.

Decrease brace up noise elimination; D.

Craft sex is good. The precision life of machining center is so taller than common machine tool 5) .

The setting has a knife library and the orgnaization that change a knife. This is the main distinction of machining center and CNC Milling and numerical control boring machine, make the function of machining center and the capability that automation machines stronger. The knife library capacity of machining center has a few less, amount to hundreds of more. These cutting tool are called automatically through changing knife orgnaization and change, also can undertake administrative; 6 to cutting tool life through controlling a system) .

Control system function is more complete. It not only can undertake controlling to the automatic treatment of cutting tool, still can undertake control and administrative to knife library, implementation cutting tool is exchanged automatically. Some machining center have many workbench, workbench can be exchanged automatically, not only can undertake be machininged automatically to a workpiece, and can undertake be machininged automatically to a batch of workpiece. Some of machining center of this kinds of many workbench is called flexible treatment is unit. Control systematic development as machining center, the rate that its intelligence changes is higher and higher, if FANUCl6 system can realize online and man-machine interaction, automatic process designing, move those who operate clavier to cooperate through chromatic monitor and hand, the input that still can implement a program, editor, revise, delete, have function of the tiring-room before downstage operation, tiring-room is editorial. In machining a process, can come true online detect, detect the error that give but self-correcting, make sure first treatment succeeds, can prevent the generation of reject thereby. CNC Milling CNC Machining