Development of positioner applied in surfacing

ZHANG Jian-xin， ZHANG Guo-sheng， LIU Jun-ying， JIANG Bo-ping
（Tianjin Research Institute of Construction Machinery， Tianjin 300409， China）

Abstract： Aiming at surfacing process for construction machinery disk type part，a new positioner was developed. The workpiece clamping， tilting and rotating were realized through the structure and transmission designing of the positioner. On the basis of frequency control， some functions such as infinitely variable speeds control，start，stop，status display and protection for positioner spindle were realized automatically. Applying electric control technique， two kinds of control modes were realized. The independent control mode and online control mode can be switched and interlocked. This positioner has been applied successfully in the project of "key technology and equipment for construction machinery parts remanufacturing" in Tianjin research institute of construction machinery. The results indicate that the application of this positioner may increase the automaticity and productivity effect remarkably.
Key words： surfacing； positioner； construction machinery； remanufacturing； inverter； electric control； online control