模具设计与制造专业英语 黄义俊_ 电子教案统一模板(模具)Unit8.pptVIP

Unit 8 Main Specification of CNC Machining Centers 8.1 Lesson 19 Specification for CNC Horizontal Machining Center Here is a typical instance of main specification of CNC horizontal machining centers shown as Table 8-1. Table 8-1 Specification for Model HTM-50H CNC horizontal machining center 8.2 Lesson 20 Specification for CNC Vertical Machining Center Here is a typical instance of main specification of gantry-type CNC vertical machining centers shown as Table 8-2. Table 8-2 Specification for Model HTM-850G gantry-type CNC vertical machining center 8.3 Reading Materials 19 Specification for CNC Turing-milling Machining Center Here is a typical instance of main specification of CNC turning-milling machining centers shown as Table 8-3. Table 8-3 Specification for Series F CNC turning-milling machining center 8.4 Reading Materials 20 Structure Feature of CNC Turing-milling Machining Center There are many structure features of CNC turning-milling machining center as below: 1. The main parts like bed, headstock, carriage, saddle, tailstock are all made of cast-iron with high intensity to provide superior stability and vibration dampening characteristics. 2. Slant bed and slide guide-way to obtain high rigidity to be suitable for heavy-duty turning, easy for chip conveying, lower thermal distortion, which can improve the machining accuracy. 3. X and Z axis of lathe choose hardened rectangle moving guide-way which makes the lathe have strong stability. It can be used for large range maching, both rough machining and finish machining. 4. The moving parts of X/Z axis driven by digital AC servo motor and ball screw. 5. Spindle driven by large power AC motor which can be changed speed continuously. 6. The feedback of location-ring has stationed encoder, and servo system has high rigidity and positioning accuracy. 7. Lubrication device