Guide screw of long and thin ball assists the application of the system that prop up

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  • source:ZIEG CNC Machining
As the rapid development of machine tool industry, machine tool of figuration nicety numerical control emerges in endlessly, guide screw of high speed ball regards numerical control as the main drive disk assembly of the machine tool, the problem that solves urgently is worth us to be discussed deep. In recent years, of machine tool of figuration nicety numerical control emerge in endlessly your industry is fixed eyes upon, and the main drive disk assembly that guide screw of high speed ball regards numerical control as the machine tool, undeniable still a few problems need to solve: Installation linearity problem (deflection problem) , the problem of moment of inertia of filament bar, athletic noise problem. Increase guide screw diameter to reach increase the tightens force to be able to solve guide screw admittedly beforehand deflection problem when assembling and the vibratile problem that produce in locomotive process, but what bring subsequently is, increase guide screw diameter to make the moment of inertia of guide screw greatens quickly necessarily, as a result cannot match with drive electric machinery and reducer photograph; Increase assemble tighten force to will reduce guide screw again beforehand deputy reach guide screw the two service life that carry accurate bearing, and athletic noise also increases subsequently, its motion precision also will be affected badly. To solve above problem, the ball guide screw that group of Hangzhou machine tool studied to develop system of Wu Yi of fluid of Electromechanical of a collect the dual flexible and auxiliary system that prop up. This system basically is used at long and thin guide screw online prop up, use spring flexible fast drive sustains the hydraulic pressure that prop up move downward, the form that adopts in order to make the nut of reciprocate successful. Its function is to reduce long and thin guide screw dormant or the deflection when motion, in order to assure the dynamic precision when status of machine tool job, also reduced athletic noise at the same time, improve the service life of guide screw. And, the dual flexible and auxiliary system that prop up has this ball guide screw electric malfunction calls the police and machinery protects hydraulic pressure function and sex of better on the safe side, assure to prop up have longer service life. Can say, the research and development of this technology made up for international already the blemish of congener structure, also fill home is blank. Guide screw assists brief introduction of structure of function of the system that prop up to pursue the 1 exterior that shows afore-mentioned guide screw to assist gripper unit, the functional structure general picture of this system refers to a graph 2. Graph the ball guide screw that 1 guide screw assists gripper unit to become to grow 7 meters passes two upright bearing fixed, the biggest deflection when its are dormant already was 50mm, and the deflection when fast whirligig is bigger. Accordingly, we will give guide screw to increase to assist each in the buy of two end position of nut prop up, dormant when prop up guide screw deflection to be the position of 0, guide screw of the ball when the job realizes nut edge guide screw to make fast move back and forth move point-blank through drive of servo electric machinery. When nut moves to be close to the position that prop up, its are whole the component that prop up must move downward quickly, wait for let nut the after immediateness that safety passes bounces prop up guide screw, make its hold 0 deflection position in athletic process. Auxiliary prop up moving downward is through hydraulic pressure system oil of pressure of device general hydraulic pressure connects hydraulic pressure oil pocket, force piston lever to drive prop up move downward quickly, in order to assure nut pass smoothly, wait for nut to pass after supporting spring will be propped up automatically namely slow bounce up, in order to make sure guide screw does not suffer concussion by flexible hold in the palm. When the design, the matchs time and hydraulic pressure signal that reachs according to nut reciprocate speed nut moves is collected will control prop up a fast fluctuation to move. Malfunction protector action nots allow this assists small gaze prop up a systematic design to have malfunction protector, when occurrence breakdown of switch of electric equipment induction or hydraulic pressure relay or malfunction, whole prop up cannot control its to be down motion through hydraulic pressure. Can be in through installation right now nut the guide plate of two side (if graph 2) uses mechanical means to force to prop up move downward, guide plate passes bottom oblique plane and prop up a photograph of two side pulley to press, force to prop up thereby move downward. Wait for nut through after, whole prop up support up along cant of guide plate bottom by bedspring again case, finish with mechanical means namely prop up a fluctuation to move, assure nut safety is passed. Graph 2 guide screw assist diagram of structure of function of the system that prop up by the working status at nut of this machine tool it is uninterrupted reciprocate, and athletic speed fast, guide plate and guide plate are propped up annulus may produce very big wallop. To reduce impact, reach in slideway prop up on special design has amortize to contact a structure, but nevertheless, if use mechanical guide plate often,next fashion that control can be affected support a service life that reachs spring. Accordingly, cycle unit still installed oil pressure monitoring and relay malfunction alarm signal, get pertinent information in time at handlers, convenient maintenance. In assisting the design process that supports a system, the architect is mature its performance characteristics and service life, than if bedspring design service life is amounted to fully 1, 000, 000. And, pass the mathematical calculation of pair of force that prop up, made sure filar lever motion is reached dormant the deflection when is close to Wu Ling deflection, prop up a contact with filar lever to use scroll contact, assisted the choiceness design that supports a system to assure effectively to contact amortize, the concussion phenomenon when avoiding to contact is injured to what kinematic pair place causes. One character without exception, all choiceness designs assured the dynamic precision that filar lever moves, reduced attrition, reducing athletic noise effectively while still improved service life. The sealed structure in this system is used small from answer reach reliable and sealed, although be used for a long time after still can keep good and sealed. The ball guide screw of body of Wu Yi of fluid of this collect Electromechanical the dual auxiliary system that prop up is mature function and sex of use on the safe side, its good performance characteristics was shown in application, achieved design intent. At present this system already was in user place to be run normally along with the machine tool, feedback without any breakdown, further evidence its security and dependability. CNC Milling CNC Machining