1、Each program should be strictly confirmed whether the tool is consistent with the program before machining.
2、When loading the tool, make sure the length of the tool and the selected head are suitable.
3、Do not open the door during the machine operation to avoid flying knives or flying loose workpieces.
4、If the tool is found during machining, the operator must stop immediately, such as pressing the "emergency stop" button or "reset button" button or setting the "feed speed" to zero.
5. In the same workpiece, the same area of the workpiece must be maintained to ensure the accuracy of the CNC machining center operation rules when the tool is connected.
6. If you find too much machining margin during machining, you must use "Single Segment" or "Pause" to clear the X, Y and Z values, then mill manually, then swing back to. Zero" to let it run on its own.
7、During the operation, the operator must not leave the machine or check the running status of the machine regularly. If you need to leave in the middle, you must designate the relevant personnel to check.
CNC precision machining.
8、Before light knife spraying, the machine should be cleaned of aluminum slag to prevent the aluminum slag from absorbing oil.
9、Rough machining as much as possible with air blowing, light knife program in the spraying of oil.
10、After the workpiece is off the machine, it should be cleaned and deburred in time.
11、At the end of the shift, the operator must be timely and accurate handover to ensure that subsequent processing can be carried out normally.
12、Before shutting down the machine, make sure the tool magazine is in the original position, XYZ axis stop at the center position, and then turn off the power and main power on the machine operation panel.
13、In case of thunderstorm, the power must be turned off immediately and stop working.
Precision parts machining methods are characterized by extremely fine control of the amount of surface material removed or added. However, to obtain the precision of precision parts processing, it still relies on precision processing equipment and precise constraint systems, and is mediated by ultra-precision masks.
For example, for ultra-large-scale integrated circuit plate making, the photoresist on the mask (see Lithography) is exposed by electron beam, so that the atoms of the photoresist are directly polymerized (or decomposed) by electron impact, and then the polymerized or unpolymerized parts are dissolved with developer to form the mask. Electron beam exposure plate making requires ultra-precision processing equipment with a table positioning accuracy of ±0.01μm.
Ultra-precision parts cutting
There are mainly ultra-precision turning, mirror grinding and grinding. Micro-turning is performed on an ultra-precision lathe with finely polished single crystal diamond turning tools. The cutting thickness is only about 1 micron. It is commonly used for machining spherical, aspheric and flat mirrors of non-ferrous materials with high precision and appearance. Components. For example, an aspheric mirror with a diameter of 800mm used for machining nuclear fusion devices has a maximum accuracy of 0.1μm and an appearance roughness of 0.05μm.
Special machining of ultra-precision parts
Ultra-precision parts are processed with nanometer accuracy, and even if atomic units (atomic lattice spacing of 0.1-0.2 nm) are targeted, they cannot be adapted to ultra-precision parts cutting methods and require the use of special precision parts processing methods, i.e., the application of chemistry.
Energy, electrochemical, thermal or electrical energy, so that the energy exceeds the inter-atomic bonding energy, thus eliminating adhesion, bonding or lattice deformation between certain external parts of the workpiece for the purpose of ultra-precision machining . These processes include mechanochemical polishing, ion sputtering and ion implantation, electron beam exposure, laser beam processing, metal evaporation, and molecular beam epitaxy.
