1, briefly explain the following the step motor in the application of wire-cut edm machine. Wire-cut edm machine is mainly composed of coordinate workbench, high speed wire agencies, bed, working liquid system, pulse power supply and controller and other components. The X, Y coordinate workbench is used to hold double coverlet machining, the X axis and Y axis feed signal issued by the controller to control two stepper motor, running a predetermined trajectory. 2. 1. 1 high-speed high-speed wire institutions walk silk machine is mainly composed of storage on the tube assembly, down plate, gears, screw pair, such as pieces of reversing device and insulation parts. High speed wire agencies are used to drive the movement of the wire electrode in a certain velocity, and the wire electrode neatly around the store on the drum. 2. 1. 2 the movement of the wire electrode system wire frame idler pulley mechanism and silking formed the movement of the wire electrode system. Wire rack is the main function of the wire electrode according to the given linear velocity movement, to support effect to the wire electrode, the working parts of wire electrode and workers do a plane geometric Angle. Wheel in wire frame, the end of the cantilever wire frame through the idler pulley support effect to the wire electrode. Wire frame according to the function can be divided into fixed, lift and offset type three types; According to the structure can be divided into cantilever and gantry. 2. 1. 3 working liquid circulation and filtration system in the process of working fluid system used in wire cutting processing, supply a working medium insulation quality working liquid, with wire electrode and workpiece cooling, exclude electric corrosion product, etc. , so as to ensure continue to spark discharge. General wedm working liquid system includes: job tank, pump, flow control valves, liquid inlet pipe, the liquid pipe and filter, etc. The working fluid to clean degree of processing stability plays an important role. 2. 1. 4 wedm pulse power wedm pulse power supply usually also called high frequency power supply, is the main component of CNC wire-cut edm machine is one of the main factors influencing the wire-cutting processing technology index. Wire cutting pulse power line pulse power supply is the basic component of the pulse generator, drive, power amplifier and dc power of four parts. 2. 2 coordinate workbench coordinate workbench is mainly composed of dragging plate, guide rail, screw motion pair, gear or worm gear pair of four parts. 1. Drag plate drag board main drag in by dragging plate, plate, drag on the board, and a table of four parts. In general, drag plate connected to the fixed bed; Plate above the dragging plate movement the direction for the coordinate Y direction; Drag on the board above the dragging plate, movement direction for coordinates X direction; Connected to drag plate on the table by the insulator. Among them, on, dragging plate at one end in the form of cantilever, in place to drag the motor. 2. Guide rail longitudinal and transverse coordinate workbench is dragging plate along the rail reciprocating movement. Therefore, on the precision of the slideway, stiffness and wear resistance have higher requirements. In addition, the guide should be flexible, smooth dragging plate movement. Wedm often choose rolling guide. Because can reduce frictional resistance between the guide rail rolling guide, facilitate workbench to realize accurate and moving trace, and lubrication method is simple. Defect is not easy to keep oil film between contact surfaces, poor ability to resist vibration. Rolling guide with ball guide rail, roller guide rail and the roller guide and so on several forms. 3. Lead screw transmission vice screw transmission is the role of vice motor rotation movement into linear displacement movement dragging plate. To make a screw pair drive precision lead screw and nut should be accurate, should guarantee the accuracy at level 6 or above level 6 precision. 4. Gears between step motor and ball screw transmission is usually adopts gear pair. Because of the backlash, clearance between shaft and bearing, and the influence of the elastic deformation of transmission chain, when the stepper motor spindle driving gear change on the transmission direction, drive will appear empty. In order to reduce and eliminate gear drive idle, shall adopt the following measures: (1)Adopt gear reducer series of less as far as possible, and strive to reduce the error of the gear transmission accuracy from the structure. (2)Adopts gear pair center distance adjustable structure, through changing the fixed position of stepper motor. (3)The passive gear or the wheel along the axial profile control interface is divided into the form of double. The assembly shall ensure that two gear profile. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone:
