Operation Steps of Cnc Milling Machine

Milling machine manufacturer to share with you: Milling machine is a versatile machine tool, on the milling machine can be processed plane (horizontal plane, vertical plane), groove (key slot, T-slot, dovetail slot, etc.), tooth Parts (gears, spline shafts, sprockets), spiral surfaces (threads, spiral grooves) and various curved surfaces. CNC milling machine is an automatic processing equipment developed on the basis of general milling machines. The processing technology of the two is basically the same and the structure is similar. CNC milling machines are divided into two categories: without tool magazine and with tool magazine. The CNC milling machine with tool magazine is also called machining center. Now let's take a look at the programming examples and operations of CNC milling machines and their precautions.

Cnc Milling Machine

1. General steps of CNC milling machine operation

(1) Before writing or programming, you should first prepare the machining program of the workpiece. If the machining program of the workpiece is long and complicated, it is better not to program on the machine tool, but to use a programming machine or computer to avoid the occupation of the machine , For short programs should also be written on the program sheet.

(2) Generally, the machine tool is turned on before the system is turned on. In some designs, the two are interlocked, and the machine tool cannot display information on the CRT without power.

(3) Reference point return For machine tools with incremental control systems (using incremental position detection elements), this must be performed first

(4) Adjust the processing program. According to the storage medium (paper tape or tape, disk) of the program, you can use a tape reader, a cassette tape drive, a programming machine, or serial communication input. If you enter the program, if the program is very simple and only one is processed, there is no need to save the program. MDI can be used to input people piece by piece and process piece by piece. In addition, the workpiece origin, tool parameters, offsets, and various compensation amounts used in the program must also be entered before processing.

(5) Editing the program If the input program needs to be modified, it needs to be edited. At this time, set the mode selection switch to the edit position and use the edit key to add, delete, and change. For the editing method, see the corresponding manual.

(6) The machine tool is locked and running the program This step is to check the program. If there is an error, you need to edit it again.

(7) Use manual incremental movement for workpiece loading and tool setting, continuous movement or handwheel to move the machine. Align the starting point to the beginning of the program and benchmark the tool.

(8) Coordinate feed is started for continuous processing. Generally, the program is stored in the memory. This method has a lower failure rate than processing on a paper tape. The feed rate during processing can be adjusted with the feed override switch. During processing, you can press the feed hold button to pause the feed motion, observe the processing status or perform manual measurement. Press the cycle start button again to resume processing. To ensure that the program is correct, it should be reviewed again before processing. When milling, for a flat curve workpiece, a pencil can be used instead of a tool to outline the workpiece on the paper, which is more intuitive. If the system has a tool path simulation function, it can be used to check the correctness of the program.

(9) Operation display Use each screen of the CRT to display the position of the table or tool, the program, and the status of the machine tool, so that the operator can monitor the processing situation.

(10) After outputting the program, if it is necessary to save the program, it can be left in the CNC's memory. If the program is too long, the program in the memory can be output to an external device (such as a puncher). Tapes, disks, etc.).

(11) Shut down the machine first and then the system.