The customer is a well-known domestic air conditioning refrigeration valve enterprise.The customer used to machine parts of refrigeration valves by sequential machining mode, one person operated two sets of equipment. After using the indexing chuck, the customer realized the operation of six equipments by one person, which not only greatly reduced the number of workers in the workshop, but also improved the precision of the valve body.(The requirements of relevant correlation accuracy of refrigeration valve body, such as concentricity, etc. is high.) At present, there are more than 50  chucks from our company on customer’s site .Customer began to use joint robots to load and unload products from last year. One robot controls three devices, and ultimately one person manages 12-20 devices.