【摘要】 用于石油套管固井作业的某环状工件，其周向孔加工存在孔位误差大、螺纹精度低、自动化水平不足等问题，严重限制生产效率。针对上述问题，提出一款环状工件钻攻一体机。以全规格适配、多工艺一体为目标，对环状工件钻攻一体机的总体布局进行规划，以确定机床的机械结构以及控制系统方案。依据机械结构方案设计钻攻装置和回转分度装置，并完成进给电机、主轴电机和分度电机的计算选型。基于控制系统方案搭建机床控制系统架构，在WPL Soft环境下编写PLC钻攻程序和分度程序，并利用DOP Soft完成人机界面设计。成品测试结果表明，钻攻一体机实现了一次夹装加工完成钻孔、攻丝两步工序，相较于现行生产工艺，简化了生产流程，降低了人力和时间成本，提升了孔位精度和加工效率。更多还原

【Abstract】 There are some problems in the circumferential hole machining of a annular workpiece used in oil casing cementing operation, such as large hole position error, low thread accuracy, insufficient automation level and so on, which seriously limit the production efficiency. In view of the above problems, a annular workpiece drilling and tapping machine was proposed. With the goal of full specification adaptation and multiprocess integration, the overall layout of the annular workpiece drilling and tapping machine was planned to determine the mechanical structure of the machine tool and the control system scheme.According to the mechanical structure scheme, the drilling and tapping device and rotary indexing device were designed, and the calculation and selection of feed motor, spindle motor and indexing motor were completed. Based on the control system scheme, the machine tool control system architecture was built, the PLC drilling program and indexing program were written in the WPL environment, and the human machine interface design was completed by using DOP soft. The finished product test results show that the drilling and tapping integrated machine can complete the two steps of drilling and tapping in one clamping process. Compared with the current production process, the production process is simplified, the labor and time cost is reduced, and the hole location accuracy and processing efficiency are improved.更多还原