摘 要

从研究重型燃气轮机叶轮专用铣床着手，借鉴国内外先进经验，设计了一台用于板材及多种工件加工的重型燃气轮机叶轮专用铣床，满足了生产和设计的要求。整个重型燃气轮机叶轮专用钻铣床-铣床主要包括横纵向进给机构、立柱、横梁、底座、工作台等主要组部件。其中所有进给机构均采用滚珠丝杠进行传动，并由伺服电机进行驱动。主轴箱安装在龙门架上，运用类比法自行设计了滚珠丝杠螺母副的制动装置。

全面阐述了重型燃气轮机叶轮专用铣床的结构原理，设计特点，论述了采用伺服电机和滚珠丝杠螺母副的优点。详细介绍了重型燃气轮机叶轮专用铣床的结构设计及校核，并进行了分析。另外汇总了有关技术参数。

其中着重介绍了滚珠丝杠的原理及选用原则，系统地对滚珠丝杠生产、应用等环节进行了介绍。包括种类选择、参数选择、精度选择、循环方式选择、与主机匹配的原则以及厂家的选择等。

关键词  铣床    数控   伺服电机   滚珠丝杠

Abstract

Starting from the research on the special milling machine for heavy-duty gas turbine impeller and drawing lessons from the advanced experience at home and abroad, a special milling machine for heavy-duty gas turbine impeller for plate and various workpieces is designed to meet the requirements of production and design. The whole heavy-duty gas turbine impeller special drilling and milling machine-milling machine mainly includes transverse and longitudinal feed mechanism, column, beam, base, worktable and other main components. All feed mechanisms are driven by ball screw and driven by servo motor. The main shaft box is installed on the gantry frame, and the brake device of the ball screw nut pair is designed by analogy method.

The structure principle and design characteristics of special milling machine for heavy gas turbine impeller are described in detail, and the advantages of servo motor and ball screw nut pair are discussed. The structure design and checking of special milling machine for heavy-duty gas turbine impeller are introduced in detail and analyzed. In addition, the relevant technical parameters are summarized.

The principle and selection principle of ball screw are introduced, and the production and application of ball screw are introduced systematically. Including category selection, parameter selection, precision selection, loop mode selection, matching principle with host, and manufacturer selection.

Keywords milling machine CNC servo ball screw