The ABC of numerical control process designing

3 are reached 2.

4 detailed introduction is made in the section. 3. The coordinate of the craft line with numeric computation the geometrical dimension of part drawing, firm ground and set is, computational spare parts the contrail that thick, finish machining moves, get knife digit is occupied. Simpler to appearance spare parts (be like by the part that forms with circular arc point-blank) outline treatment, the coordinate of the node of element of the centre of a circle of the start that wants computation to give geometrical element, terminal, circular arc, two geometry or point of tangency is worth, if numerical control device does not have cutting tool to compensate a function, calculate even the value of athletic contrail coordinate of cutting tool center. More complex to appearance part (be like the part that forms by the curve that be not a circle, curved surface) , need uses straight line segment or circular arc paragraph approach, according to machining the requirement of precision computation gives node coordinate to be worth, this kind of numeric computation wants to be finished with the computer commonly. About numeric calculative content, we will introduce in detail in the 3rd chapter. 4. Write machine program single foundation to machine compensation of number of dosage of course, cutting, cutting tool, cutting tool, machine tool contrail of auxiliary movement and cutting tool motion, the program that writes spare parts treatment according to the format of the instruction code that numerical control system uses and block is only, and school nucleus the content of two afore-mentioned measure, correct among them error. 5. The content record on the program sheet with good the work out medium of the control that make is controlling medium to go up, regard the input of numerical control device as information. The handiwork that adopts a program is inputted or communication is transmitted send numerical control the system. 6. Course desired result tries the control medium with cut written program sheet and preparation good with first, must mix through desired result try cut ability to be used formally. The method of desired result is the content that gets on control medium directly in inputting numerical control system, make a machine tool airborne turn, the athletic contrail with checking a machine tool is correct. On the numerical control machine tool that CRT graph shows, the method that uses simulation cutting tool and workpiece cutting process undertakes examining more convenient, but these methods can examine only sport is true, cannot examine to be machined the treatment precision of the spare parts. Accordingly, first when should have a part try cut. When discovery has machining error, analyse the account that the error produces, find out problem place, try to amend, till achieve the requirement of part drawing paper. General component is the process designing of methodological numerical control of process designing of two numerical control manual process designing and automatic process designing two kinds. 1. Process designing of handiwork of manual process designing is from the analysis process of part drawing appearance, certain treatment, numerical value is calculated, write medium of the sheet of spare parts machine program, control that make to arrive course desired result is to be finished artificially. It asks process designing personnel wants to be familiar with numerical control instruction and process designing regulation not only, and have knowledge of CNC Machining technology and numeric computation capacity even. Simple to processing form, computation measures small, block to count not much part, it is easier to use manual process designing, and economy, seasonable. Accordingly, in choosing a treatment or be being machined with the outline that circular arc comprises point-blank, manual process designing still applies extensively. To the part with complex form, have the curve that be not a circle, list curve and the part that curved surface forms especially, have certain difficulty with manual process designing, the probability that make mistake increases, cannot write a program even sometimes, must use the program of methodological work out of automatic process designing. 2. Automatic process designing is automatic process designing is benefit with the computer special software weaves CNC Machining program. Process designing personnel needs the requirement according to part drawing appearance only, language of use numerical control, undertake by the computer numeric computation and postposition are handled automatically, write a sheet of spare parts machine program, machine program sends numerical control the machine tool through the means of direct communication, direct machine tool works. Automatic process designing makes a few computation trival, manual process designing difficulty or cannot make up the order that give to be able to be finished smoothly. Brief summary: The ABC of characteristic of the treatment principle of machine tool of the generation that this chapter basically told about numerical control equipment and development, numerical control, CNC Machining and application and numerical control process designing. Requirement reader understands the process of generation of numerical control equipment and development, the basic function of the composition of numerical control machine tool and each part, the treatment characteristic of numerical control machine tool. Master the main content of numerical control process designing and measure, can choose appropriate treatment method according to spare parts appearance and manufacturing cycle. CNC Milling CNC Machining