Design And Implementation Of Flexible Tooling Control System

There are hundreds of special tooling for the internal pipeline processing of rocket engines.Ordinary special tooling can not meet the high-efficiency and highquality machining tasks of tooling.The use of flexible tooling greatly reduces manufacturing costs,increases production efficiency,and has high application value.This paper mainly takes the rocket engine tailor-welded pipeline tooling as the research object,studies the flexible tooling working mode and control system,completes the design and implementation of the flexible control system,and replaces the current special welding tooling with the digital flexible tooling system.The precise docking of the catheter itself before welding and the precise docking of the catheter product on the arrow body are achieved,while at the same time achieving efficient catheter production and catheter production.This paper focuses on the flexible tooling mechanical structure characteristics and system function requirements,and establishes the flexible tooling control system architecture of the above machine industrial computer and lower compute r PLC as the main control unit.The upper computer monitoring terminal communicate with the lower computer by the PROFINET bus TCP/IP protocol.The upper computer adopts VS2015 and SQL 2014 for software writing,mainly completes communication with the lower computer,different login mode settings,system zero point and transmission system parameter configuration,system fault alarm notification and real-time display,pipe space model generation and storage,etc.;The development of the control program of the lower computer is writing by using Botu software.the control program of the lower computer mainly realizes the switching of different working modes of the server system,the control of the input and output modules of the lower position sensor,the data communication with the upper computer and the sound and light alarm function when the system is faulty.The server system system acts as a power unit of the system to realize the positioning function of the supporting motion unit.Combined with the mechanical structure and working mode characteristics of the system,the system is analyzed by forward and inverse kinematics.According to the kinematics model,the method of improving the positioning accuracy is studied.The calibration experiment is carried out by using the FARO laser tracker,and the upper machine control system is adopted.The system error is compensated,and the calibration method is valid according to the test results after calibration.After testing by software and hardware system,the overall function of the system meets the technical requirements.The main sources of system error of pipe flange installation and V-groove installation are analyzed.We analysis Installation uncertainty for different installation method,and a solution is proposed to reduce system installation error.After the result analysis is compared with the technical function indicators,the system's various functional indicators are in line with the demand.