2 processing center usage Let's take the XH754 machining center as an example. The CNC system of the XH754 machining center is the 6 M system of FANU C of Japan. The main body of the hangar is produced by Qinghai No.1 Machine Tool Plant. Under the control of the numerical control system, the worktable can be moved in the X and Z directions, and the spindle is in the Y direction according to the coordinate amount set in the program, so that the tool on the spindle can be finished differently. The processing of the parts is controlled by the computer system. The X and Y directions can realize arc and linear interpolation, satisfying the processing of straight line and arc. For drilling, reaming, tapping and boring, there is a corresponding fixed cycle. , call freely in the program design. The indexing workbench is available in 360! Within the range, to 5! Rotate for the smallest unit to meet the machining of multiple sides of the workpiece. The magazine has a capacity of 30. When a tool needs to be changed, the spindle moves up to the second reference point in the Y direction, that is, the tool change point. Knock into the tool holder and grab the hand. The pneumatic broach mechanism in the spindle is loosened, the tool magazine is pushed out, and the tool in the spindle taper hole is pulled out. The tool magazine is then transferred to the lower tool to be selected, and the selected tool is inserted into the spindle taper hole, and the pneumatic pull in the spindle. The knife mechanism is then tightened. The spindle is then moved down to the part of the workpiece to be machined. The resolution of the detection system of the machining center is 0. 01mm, the repeating precision of each coordinate is within 0 01mm, and the positioning error of the indexing table is? 5, its spindle speed can be stepless speed regulation between 37. 5 5000rpm. The feed rate can be steplessly regulated between 1 4000 m/min. 3 knowledge structure of the overall layout of the machining center The decisive factors affecting the overall plan of the machining center in the model are the form and structure of the headstock, the workbench, the tool magazine, and the program system in the CNC box. The other functional components are based on the spatial position, manufacturing and ease of use, etc., so the design process Uncertainty. 4 P 7 pump body processing process on the XH754 machining center The P 7 pump is an advanced product introduced by the Austrian FM company. Advanced products must require advanced technology and equipment to match. After practice, the pump body of P 7 pump is processed by XH754 machining center, and the effect is better. The XH754 machining center has a concentrated process, simple operation, high processing precision and stable quality. It is undoubtedly an effective process measure for the pump body processing in the oil pump industry. However, the cost of the XH754 machining center is generally 10 20 times that of a normal machine tool. Therefore, the cost of the machining center machine unit is higher per unit time. How to solve this problem, that is, how to make use of the efficiency and economic benefits of the machining center. Generally speaking, the actual processing time of the machining center has a direct impact on its economic benefits. The higher the utilization rate, the lower the processing cost and the better the economic benefit. . If the P 7 pump body is processed by the traditional process, first, the accuracy is not enough; second, some parts are generally impossible to complete the machine tool; third, time-consuming and laborious; fourth, the production cycle is long. The XH754 machining center P 7 pump body is compared with the conventional process plus work. If we can solve the overall design of the XH754 machining center well, it will definitely play a very important role in improving work efficiency. Now we use the XH754 machining center toolbox overall design scheme to build a mathematical model using extenics to find the optimal design. 5 XH754 machining center tool magazine overall design The function module of the overall design of the XH 754 machining center is now taken as an example. Tool magazine design requirements: the magazine capacity is between 2 and 30; it is convenient to arrange the position of the tool magazine according to the overall layout requirements of the tool magazine; the structure is not complicated; the overall quality is light; the rotation is easy, the moment of inertia is moderate; Short; the magazine is used in machining centers. (Finish) Copper Pipe,Air Conditioning Copper Tubes,Straight Copper Pipe,Pancake Coil Copper Pipe Jiangsu Easy Snow International Trading Co.,Ltd , https://www.qbcoldroom.com
1 The overall design of the machining center is a global design problem, which has a great influence on the manufacture and use of the machining center. The current design is still based on the traditional method, that is, the designer first draws up several feasible solutions, then analyzes and compares, and selects a satisfactory solution for specific parts and parts design. However, the satisfaction of the design scheme is completely determined by the designer's subjective experience. It is unrealistic to construct an objective function that can be numerically calculated to make the design optimal. This paper uses the extension theory to study the application of the extension method to the layout design of the machining center of the oil pump nozzle.