Diversity of Machining Methods for CNC Prototype Models

With the gradual growth of the prototyping industry, the manufacturing process is also increasingly updated, with 3D printing and silicone molds. But cnc machining is still the most common way to produce parts. There are several common methods for CNC Machining of prototype models:

 

1.Turning

     Turning simply involves firmly clamping the part on a rotating plate or mandrel. When the part rotates, the cutting tool rests against it in a fixing device mounted on a moving slide. The slider can be moved up and down along the length of the part, and closer or farther away from the centerline. This simple operation is ideal for quickly removing large amounts of material. In addition, the drill bit installed on the tailstock of the lathe can drill precise holes; the lathe is used to form a concentric shape on the periphery of the circular part; the grooves, ring grooves, step shoulders, internal and external threads, cylindrical Body and shaft-many round or circular features.

 

2. Milling

     Milling is fundamentally different in that the partremains stationary and the cutting tool rotates on a spindle. The partis usually held horizontally in a machine vise and mounted on a table that moves in the X and Y directions. The spindle can hold various tools and move in X, Y and Z axes. Milling cutters are used to make squares / flats, notches, chamfers, channels, profiles, keyways and other features that depend on precise cutting angles. As with all metalworking operations, cutting fluids are used to cool partand cutting tools, to lubricate, and to flush away metal particles or chips.

 

3. Grinding

     Grinding to produce very flat surfaces on metal parts is important for many applications, and the best way to make this precise surface is to use a grinder. The grinder is a rotating disc covered with abrasive grit with a specific roughness. The part is mounted on a workbench and moves back and forth laterally on a sliding table below the grinding wheel, or sometimes remains stable as the grinding wheel moves. Depending on the material being ground, different types of abrasives are used. Thermal and mechanical stresses in the grinding process can adversely affect the part, so care must be taken to control tool speed and temperature.

 

4. EDM

     Solid EDM is used to make dimples, holes, and square features inside hardened tool steel, and it is difficult, if not impossible, to make it any other way. It is commonly used in plastic injection and pressure die casting molds, and rarely in the finished part itself. EDM is also used to make textured surfaces or recessed (recessed) letters and logos on molds.

 

5. Wire cutting

     Wire cutting uses copper wire as a conductor of high voltage charge. Since the conductor is stably corroded during the cutting process, new wires are supplied from the spool. This technique needs to be passed and cannot be used for blind holes. Wire cutting is used on thick, hardened tool steel to make round or semi-circular features, which will be very difficult to make with conventional cutting tools.

 

    Through the use of the above-mentioned several manufacturing methods of the prototype model, the quality of CNC products processed by many prototype processing factories has been rapidly improved, and has spread to the world.

 

In recent years, our company has paid attention to the improvement of CNC Machining processing technology, constantly improving and improving, thus winning the recognition of customers around the world. I believe you will be one of the next customers who trust us, contact us at [email protected] today!

Author: Chris Na