機(jī)械專業(yè)畢業(yè)設(shè)計(jì)---英文翻譯原文(文件)
【正文】 With MDI mode, a part program block can be made to control its operation. Detailed procedure is as follows. First, press the key “manual data input” on the machine control panel, choose MDI operation mode , press “inset” and “delete MDI program soft key” , then input different kinds of programs. With this procedure, all the function operations can be performed. Second, with the MDI state, SIEMENS provides a special function— “turning milling”. If the correlated to be ready for stock machining. Program input Operating procedures are as follows: (1)Press the key “program operating area”, open program supervisor register. All the part programs or the circle catalog which are stored in the machine are displayed in the superisory windows in the form of list. (2)In the program catalog, use a cursor movement key to select a part program, after pressing the menu soft key “open”, “copy”, “delete”, the corresponding program operation can be carried out. New program input procedure is as follows. In the program supervisory window, after pressing the key “New program”, a dialogue frame can be seen, then input a new main program and subprogram file. The main program file MPF can be automatically entered and the subprogram file SPF must be inputted with the file name. After inputting these files, press the key “confirming” to receive input. After the new program file is formed and the edit window is seen, the new program can be made. Tool pensation In the programming the received tool motion path involves the motion path of the tool center. When programmig for the workpiece profile and external shape, the different programs will be written out because of the different diameter and length of the used tools. If only these mands above are used, it may be troublesome and plex. Therefore, it is not advisable. These problems can be solved by the tool pensation function. When programming with this function, the program can be made according to the part size in the operation drawing, no need to consider about the certain size of the tool. As long as the correlated pensation mand is added to the program and the correlated data about the tool size is input into the page table “tool parameter set ” which is a machining center system, then when the program is executing the mand, the motion path of the tool center will automatically get corrected according to the given data to ensure that even if using the tools with different specifications , the workpiece with the same size precision can be machined. 1) Zero point offset. Socalled “zero point offset” means the offset value of the part program origin with respect to the machine origin on the X,Y and Zaxes coordinate after a part is mounted to the machine table. When programming parts, it is very important to choose a program origin correctly according to the marked base size on the part. After finishing programming the part and the workpiece will be mounted to an appropriate position of the worktable, the machine is first controlled to zero the X, Y and Zaxes, then the worktable is operated manually to coincide the position of the tool on the X, Y and Zaxes, and coordinate with the pragram origin position of the workpiece and record the three coordinate values. The procedure “zero offset” is se
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