摘  要

从研究铣床着手，借鉴国内外先进经验，设计了一台XK5036数控立式铣床，满足了生产和设计的要求。XK5036数控立式铣床整个铣床主要包括横纵向进给机构、垂直进给机构、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。全面阐述了数控铣床的结构原理，设计特点，论述了采用伺服电机和滚珠丝杠螺母副的优点。详细介绍了数控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XK5036横向进给传动机构设计着重介绍了横向进给机构，横向进给机构主要通过滚珠丝杠执行完成的，重点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

Started from the study of milling machine, referring to the domestic and foreign advanced experience, to design a XK5036 CNC vertical milling machine, to meet the requirements of production and design. XK5036 CNC vertical milling machine milling machine mainly comprises the entire transverse and longitudinal feed mechanism, a vertical feed mechanism, column, beam, a base, etc. the main component of working table. All of which feed mechanism adopts the ball screw drive, and is driven by servo motor. The spindle box is arranged on the door frame, by using the method of analogy to design their own ball screw nut pair of braking device. Comprehensively expounds the structure principle, CNC milling machine design features, discusses the advantages of using a servo motor and a ball screw nut pair. Introduces the structure design and verification of CNC milling machine, and analyses the. In addition, a summary of the relevant technical parameters.
The design of XK5036 transverse feed transmission mechanism introduced emphatically the transverse feed mechanism, a transverse feed mechanism mainly through ball screw has finished executing, emphatically introduces the principle and the selection principle of ball lead screw, ball screw system on the production and application of such links are introduced. Including the principles and manufacturers selection, parameter selection, selection accuracy, cycle mode choice, and matching host selection.
 
Key Words:  milling machine, Numerical control, Step-by-step, serve motor, Ball bearing guide screw nut
 目  录