With the gradual growth of the handicraft industry, the manufacturing process is also increasingly updated, including 3D printing and silicone replica. But CNC machining is still a common way to produce parts. At present, there are several common methods for CNC machining of hand board model
Turning simply involves clamping the workpiece firmly to a rotating plate or spindle. When the workpiece rotates, the cutting tool is fixed against it in a fixed device installed on the moving sliding part. The slider can move up and down along the length of the workpiece, and closer to or away from the centerline. This simple operation is ideal for rapid removal of large amounts of material. In addition, a drill bit mounted on the tailstock of a lathe can drill precise holes; a lathe is used to form concentric shapes on the periphery of circular parts; and a lathe is used to make grooves, ring grooves, step shoulders, internal and external threads, cylinders and shafts - many circular or circular features.
Milling is fundamentally different from milling in that the workpiece remains stationary and the cutting tool rotates on the spindle. The workpiece is usually held horizontally in the vice of the machine, mounted on a table moving in the X and Y directions. The spindle can hold all kinds of tools and move on the X, y and Z axes. Milling cutters are used to make squares / planes, notches, chamfers, channels, profiles, keyways and other features that depend on the precise cutting angle. As in all metalworking operations, the cutting fluid is used to cool the workpiece and cutting tools, to lubricate, and to wash away metal particles or chips.
Grinding is important for many applications to produce very flat surfaces on metal parts, and the way to produce such accurate surfaces is by using a grinder. The grinder is a rotating disc covered with abrasive grains with a specific roughness. The workpiece is mounted on the worktable and moves horizontally back and forth on the sliding table under the grinding wheel, or sometimes remains stable when the grinding wheel moves. Depending on the material being ground, different types of abrasives are used. The thermal and mechanical stresses in the grinding process may adversely affect the workpiece, so the tool speed and temperature must be carefully controlled.
Solid EDM is used to make pits, holes and square features inside hardened tool steel, and it is difficult, if not impossible, to make any other way. It is usually used in plastic injection and pressure casting mold, rarely used in the finished product itself. EDM is also used to make textured surfaces or depressed (depressed) letters and marks on molds.
5. Wire cutting
Wire cutting uses copper wire as a conductor of high voltage charges. As the conductor is steadily corroded during the cutting process, new wire is supplied from the spool. This technique needs to pass through and cannot be used for blind holes. Wire cutting is used on thick, hardened tool steel to produce circular or semicircular features, which will be very difficult to manufacture with conventional cutting tools.
6. Optical grinding
Optical grinding we only discuss metal processing, but CNC processing is also used to make special optics for glass or plastic. Optical devices require very fine surfaces with very tight tolerances, so special grinding equipment is used to rotate the grinding wheel relative to the surface when rotating on multiple axes.
Through the use of the above several manufacturing methods of handboard model, the quality of CNC products processed by many handboard processing plants has been rapidly improved, thus moving to the world.