working taper of wire EDM machine
Wire Electrical Discharge Machining (EDM) is a highly precise and efficient method used in various industries for cutting and shaping hard materials. One important aspect of wire edm machines that needs to be understood is the concept of working taper. Working taper refers to the slight angle or taper that is formed on the sides of a cut made by the wire in the material being machined.
The working taper is an inherent characteristic of the wire EDM process and is caused by several factors. One of the main factors is the natural vibration of the wire as it moves through the material. This vibration causes the wire to oscillate slightly, resulting in a taper on the cut. Another factor is the spark erosion process itself, which causes the wire to wear down and become thinner as it cuts through the material. This thinning of the wire also contributes to the formation of the taper.
| Type | X,Y axis travel | U,V axis travel | Taper/height |
| DK7735 | 350×450mm | 60×60mm | ±3°/100mm |
| DK7740 | 400×500mm | 60×60mm | ±3°/100mm |
| DK7745 | 450×550mm | 80×80mm | ±6°/100mm |
| DK7750 | 500×630mm | 100×100mm | ±15°/100mm |
| DK7763 | 630×800mm | 100×100mm | ±30°/100mm |
| DK7780 | 800×1000mm | 100×100mm | ±30°/100mm |
| DK77100 | 1000×1200mm | 150×150mm | ±30°/100mm |
| DK77120 | 1200×1500mm | 150×150mm | ±40°/100mm |
The working taper in wire EDM machines is typically measured in degrees per unit of thickness. For example, a taper of 1 degree per 1 mm means that for every 1 mm of material thickness, the cut will have a taper of 1 degree. The taper angle can vary depending on various factors such as the material being machined, the wire diameter, the cutting speed, and the flushing conditions.It is important to understand the working taper in wire EDM machines because it can have an impact on the accuracy and precision of the machined parts. The taper can cause deviations from the desired dimensions and geometries, especially in parts with tight tolerances. Therefore, it is crucial to take the working taper into account when designing and manufacturing parts using wire EDM..
In some cases, it may be necessary to perform secondary operations such as grinding or milling to remove the taper and achieve the desired dimensions and surface finish. This adds additional time and cost to the manufacturing process. Therefore, it is important to carefully consider the design and machining requirements to minimize the need for secondary operations.In conclusion, understanding the working taper in wire EDM machines is essential for achieving accurate and precise machined parts. The working taper is caused by factors such as wire vibration and wear, and it can have an impact on the dimensional accuracy and surface finish of the parts.