Research on the Key Technologies of a New CNC Turret Vertical Drilling and Milling Machine

Abstract

The key technologies and design methods of a new CNC turret vertical drilling and milling machine, which functions between ordinary CNC drilling machine and vertical machining center, are studied in the paper to solve the problems such as high cost, low accuracy and efficiency and labor intensive in machining small-size, porous and multi-process parts with conventional machines. On the basis of analysis of features and requirements of the machine, a proper turret c enter is selected and overall structure of the machine determined. With three-dimensional modeling and assembly, the longitudinal and lateral feed transmission mechanism are designed to re alize the machine's three-axis feed by combining the cross sliding table and the turret center's own Z-axis feed mechanism. The tool changing process of the original tool changing trigger mechanism and its problems are analyzed and a new tool changing trigger mechanism and its control are de veloped in detail, which can reduce tool changing time and increase machining efficiency effectively. The machine developed in the paper fills the market gaps between ordinary CNC dr illing machine and vertical machining center, and practical application proves that it meets the machining requirements and has a good market prospect.