Digital CD synchronization with the development of information society, optical disc storage capacity, density, transmission speed, improving production speed will be endless. DD motor in the application of DVDR manufacturing equipment, make the disc production cycle reduced to 4. 5 seconds, each device can produce 500000 pieces per month, greatly improving the production efficiency, to win the market competitiveness. Disk manufacturing production in a large number of replication, 'polymerization carbonate material' is often used as a material, and CD in a way that is injection molding production. Feature is transparency, volume stability, impact resistance and does not contain magazine. By mold injection molding machine, temperature and the disc arm, etc. The role of the DD motor is in transmission function of the complete transmission disc arm. Usually the transmission distance is 180 degrees or 90 degrees. The shorter the delivery time, in the embodiment of the production efficiency is increased Numbers of the CD production per unit time. So why choose DD motor as the CD in CD manufacturing equipment transfer arm drive mechanism? 1. DD motor clearance error is eliminated, the transmission system of the ordinary because of the speed reducer, couplings, gears, belts or screw the intermediate links, such as clearance error is inevitable, especially for long time operation caused by mechanical wear and tear is unable to compensate. DD motor can be a very good solution to solve the above problem, as a result of the DD direct drive installation, error is reduced to a minimum; And its characteristics of stepping error can also be modified at any time, to achieve the ideal control precision. 2. High resolution and high positioning accuracy. CCTL DD motor matching encoder resolution is very high, resolution for 6-1048572 P/rev, 209715 electric control precision, has more than ordinary stepper control precision of one order of magnitude. Due to the production of precision, the final accuracy control generally can be plus or minus 2. 5Arc sec; 3. High rigidity, compact structure, high efficiency. DD motor with strong rigidity, and the load combination is very hard, higher request for the drive. Adopt NSK bearings, does not produce dust or oil, bearing is completely closed, do not need lubricating oil. Motor hollow unique design not only reduce its moment of inertia, also provide customers with more installations. After the combination of mechanical structure is more compact, the highest efficiency is the other way around. 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: