| The national standard is DK77**, D is the machine type code (electric machining machine) K is the machine tool code (CNC) 7 is the group code (EDM machine) 7 is the type code (reciprocating wire cutting machine)* * is the basic parameter code (workbench horizontal stroke)
Many companies now set their own models casually, subdividing small tapers (plus or minus 3°) and large tapers (plus or minus 30°). There are also two differences between servo and step. |
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