Ultra-high speed machining and ultra precise machining in the future the two themes of the machine tool industry development, the traditional machine tool feed drive system is 'a rotary motor + ball screw'. This kind of drive system involving in the middle of the components, more exercise of inertia is big, and ball screw itself all have physical limitations, so the linear velocity, acceleration and location accuracy is limited, can't meet the needs of the ultra high speed, high precision machining. The requirement for high CNC machine adopt linear motor, it directly produce linear motion, the structure is simple, moving inertia small, the system has high rigidity, good fast response characteristics, high speed it can achieve precise positioning, generate thrust, especially movement velocity and acceleration is higher than the number of times the ball screw, work schedule can be infinite, less maintenance, long service life. As a linear motor manufacturer's, linear motor are analyzed based on the past experience to overcome common problems. 1)Thermal insulation and heat dissipation problem of permanent magnet linear motor is running, because the copper loss and iron loss, the coil will be fever, bring some negative effects: (1)To old loss or damage caused by coil insulation, make inconvenience, into a larger current coil which does not produce more thrust. (2)The temperature will change the working point of permanent magnet. (3)If heat transfer to the machine table or guide rail, produce hot deformation will affect the machining accuracy, so the linear motor must be cool, for magnetic steel is highest do not exceed 70 ℃ temperature, coil temperature does not exceed 130 ℃. For moving coil (动圈式)And general moving magnet linear motor for cooling coil parts; But under the request of ultra-precision moving magnet linear motor, should adopt double water, however, with the temperature sensor monitoring system. U linear motor due to the structure, general need not cooling measures. 2)Magnetic isolation and protection problems of machine tool cutting fluid corrosion machine, iron filings, trap dust pollution, even blocking the air gap, so must be closed motor. Permanent magnetic steel has strong attraction to the ferromagnetic material, to be on the safe side should be magnetic separation, can adopt the stainless steel cover closed. Both ends of linear motor to have buffer protection device (冲击-吸收)And electronic limit switch, prevent the child out of control after the collision. To protect cables to add drag chain, the output signal lines need to add the shield. 3)Linear guide rail for load bearing, to adapt to high speed movement and ensure accuracy, select guide to consider travel size, mechanical properties, precision and speed, capacity, etc. Linear motor manufacturing process with the demand of the market innovation, dongguan industrial automation technology co. , LTD, the CCTL linear motor base width of 135 mm, 170 mm and 230 mm three types, the current is applied to study on/positioning detection, laser (Laser cutting/laser marking, laser engraving/laser drilling, etc. )Precision assembly, precision machine tools, semiconductor manufacturing equipment, positioning detection, electronic production equipment, and 3 d printing equipment, etc. Can be single shaft or any combination used, on-demand customization. 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:
