Research And Development Of BD2510CNC Gantry-moving Type Three-dimensional Drilling Machine

Domestic three-dimensional drilling machine’s capacity is small, processing efficiency islow, and intelligence compared with the foreign products has a large gap, so it can’t meet thehigh speed development of numerical control processing industry needs. Developed the newthree-dimensional drilling machine that not only with good dynamic and static characteristicbut also has processing capacity, and formed real competition with imported products are theurgent needs of the current CNC steel structure processing equipment industry. In view ofcurrent shortage of the great section steel processing equipment, the BD2510typegantry-moving type three-dimensional drilling machine was designed and developed in thispaper that according to the Shandong province innovative project——“Research anddevelopment of the great section steel high-speed numerical control drilling equipment”.Furthermore the dynamic and static analysis and structural optimization of the lathe bed basewas processed by using the finite element analysis software ANSYS. Mainly as follows:1. Firstly the whole structure was studied. According to the main functions of themachine, mechanical system and control system were designed and the general layout wasdetermined.2. The main mechanical components such as lathe bed, longmen frame and power unitwere designed. The three-dimensional entity modeling were founded using three-dimensionalentity modeling software Pro/E. Calculation and selection of main transmission, servo driveand longmen super-modulus gear transmission were performed.3. The lathe bed was the foundation part of three-dimensional drilling machine, and itsstructure had exerted significant influence to the quality of the machine performance. Carryon a finite element analysis for the lathe bed base, in order to ensure a rational structure andoptimizing. Finite element analysis software used the ANSYS which was at present moregeneral. ANSYS was used to make bed the base static analysis and modal analysis andforecast stress and deformation in the work process of the machine. The static deformationquantity and the first five order natural frequency and vibration mode of lathe bed base were got in ANSYS and according to the mode to find out the weak links of the lathe bed. The lathebed structure was put forward three improvement schemes according to the results of frontanalysis and its structure was improved design. The best improvement plan was determinedand it was provided a reference for the future of machines improvement or serialization ofproducts.4. Aiming at processing characteristics of gantry-moving type three-dimensional drillingmachine, a control system was designed and developed based on PLC. According to theprocessing task requirement for machine, the main principle of the control system wasanalyzed and the hardware structure and software process were designed in the paper. Theinformation communication mode between PLC and the orientation module were established,and the connections of orientation module and servo system were found. The hardware designof servo-system was made based on high-performance CPU, orientation module and I/Omodule. The movement synchronization of gantry was detected, and motion control ofgantry-moving and power unit was implemented. The experimental result proves that thecontrol system is running reasonable and reliable.