加工中心毕业论文加工中心智能换刀系统设计_毕业设计论文.doc

东华理工大学长江学院 毕 业 设 计 题 目 加工中心智能换刀系统设计 专 业： 自动化 系 别： 机械与电子工程系 摘 要 关键词：? 加工中心 ATC?刀库?PLC?自动选刀?液压传动 Abstract With the development of NC, the automatic tool changer system is More and more important in the modern advanced manufacture, because the ATC can shorten the cycle time of product manufacturing, improve the precision of product machining. The latest requirements of machine tool user comprise of diversification of control object,complexity of process, flexible of application and high reliability. The function of tool magazine is that stores the tool and moves the tool which will be used in the next manufacturing process to the right changeover position and robot will finish the change over tool When the tool magazines capacity is so big and the distance of tool position is more far away the principal axis, there need the tool exchanging unit to implement the changeover work between the principal axis and tool magazine. The framework of this function include the robot, tools rotation station and changeover robot.PLC control the use of hydraulic transmission, made hydraulic transmission to more stable and accurate. this design topic is based on the PLC machining center tool change control system design. Through the analysis of the knife of the automatic tool changing process, so that the cutter in machining center can be matched with the tool changing manipulator needs -- in NC program under the control of flexible implementation tool changing process every time new knife only needs to input the corresponding tool change signal can be. The analysis and control on the basis of the requirements, designs the corresponding control procedure. The control program includes: establish the library image, recording request tool number, the rotation of the turntable direction judgment and to determine the turntable is reversed, to send pulses to control the cutter disc to rotate in place, lights an