case analysis

1、 A Sino foreign joint venture automobile engine manufacturer has used several British engines LANDIS

       Production of camshaft grinder. The grinder is equipped with a dynamic and static piezoelectric spindle, and the spindle is a synchronous motor spindle with various sensors such as an online dynamic balancing system. In the past, the customer had the British manufacturer repair the damaged spindle. When the British come to repair, the cost is high (about 1 million yuan) and the time is long. The customer also found several repair companies in China, some of which can repair the movement。
      Later, the customer contacted our company through a friend's introduction. Our company specially organizes expert teams to the customer's site for many times to analyze the customer's equipment and communicate with the customer according to the customer's specific conditions. Finally, through unremitting efforts, we successfully repaired the damaged spindle system. According to the customer's feedback, the processing quality after maintenance is the same as that of imports. At present, the spindle has been running for many years and is in good condition!
          
          

2、A customer in Changzhou has several Cincinnati 5-axis machining centers

      It is equipped with WEISS electric spindle. The electric spindle is equipped with hydraulic automatic tool change, permanent magnet synchronous motor and encoder. The customer was unable to change the tool on the machine tool at that time, and suspected that there was a problem with the encoder. The customer contacted many related manufacturers, including machine tool agents and spindle manufacturers. After knowing the specific situation, they said they couldn't repair it. The main reason is that the machine tool is too old, and the supporting electric spindle and encoder have stopped production. In particular, the encoder is not only out of production, but also has no substitute. Therefore, the manufacturer recommended that the customer replace the motorized spindle. However, the replacement of the motorized spindle requires about 400000 yuan and takes a long time. Later guests。
          
          

3、Maintenance of ultra-high speed internal grinding chip spindle

      Many customers in several industries in China use ultra-high speed internal grinder equipped with imported ultra-high speed motorized spindle, and the spindle speed is between 100000 and 120000/rpm. Due to the abrasive chips, the product processing accuracy is required to be very high, so the spindle accuracy and vibration value are also required to be high. Before, many customers needed to repair similar spindles. Generally, they returned to the original factory in Europe for repair, which was costly and took a long time. Some customers have also tried to find other repair points in China, but the repair quality is not ideal: the vibration value can not be controlled at high speed, which can not meet customers' processing needs. Moreover, the speed is too high, and the bearing is easy to be damaged. We communicated and studied with Renaud of Switzerland, and also made in-depth discussions with many users, analyzing the processing technology and on-site environment of customers. The maintenance process and testing equipment of this spindle have been specially improved. By September 2022, we had repaired nearly 20 similar super high speed motorized spindles for different customers. The customer reported that the processing quality and service life basically reached the level of original factory maintenance in Euro, while the maintenance cycle and cost were greatly saved.