Small Hole EDM Drill KD703A and KD703B
The machine characteristics:* Can drill deep hole with diameters 0.2mm ~ 3mm (the depth-diameter ratio is 300: 1)
* The speed of drilling hole is 30mm~60mm depth per minute (it is different for different material)
* Can drill wire-cut starting hole, filter hole, jet hole, gas hole, group holes and hole of super depth etc.
* Can drill small holes on the various conductive materials, even semiconductor material, especially stainless steel, chilled steel, copper, aluminum and hard alloy etc
* Can drill on oblique and curved surface directly
* Can easily erode the drill and screw tap etc which is broken in the workpiece and not destroy the screw thread of the holes
* The working water can be normal water or saponification fluid and no pollution is brought
* The operation is easy and convenient
* X, Y, Z axes have digital display devices
* Z axis has the function of setting depth
| Item | Unit | KD703A | KD703B |
| Electrode diameter | mm | ᶲ0.2 - ᶲ3.0 | ᶲ0.3 - ᶲ3.0 |
| Spindle head travel | mm | 280 | 280 |
| Z-Axis servo travel | mm | 380 | 380 |
| Z-Axis max. adjust speed | mm/min | 2200 | 800 |
| Speed of rotating head(C-Axis | RPM | 0-500 adjustable | 0-500 adjustable |
| Table Size | mm | 320 x 440 | 320 x 440 |
| XxY travel (Manual) | mm | 300 x 400 | 300 x 400 |
| The maximum distance between the guide and working table | mm | 320 | 320 |
| Working table high | mm | 920 | 920 |
| Max. Working current | A | 40 | 40 |
| Input Max. power | KW | 4.5 | 4.5 |
| Power supply input way | 380V/50Hz or 220V/60Hz | 380V/50Hz or 220V/60Hz | |
| Max load of working table | Kg | 300 | 300 |
| Number of DRO axis | X,Y,Z Three axis | X and Y Two axis | |
| Maximum pump pressure | MPA | 12 | 8 |
| Mainframe exterior size | (LxWxH)mm | 1000x1000x1900 | 1000x1000x1900 |
| Machine Weight | Kg | 850 | 800 |
The processing data in common use: This section is some technologic data according to technics experiments of normal prototype machines and technologic results. In particular process, Users can choose different parameter according to different orders to gain the process result which user wants. Conditions: Electrode: brass power net: 380AC
| parameters material | Ton(1) | Toff(2) | Ip(3) | Kc(12) | pressure(Mpa) | processing voltage(V) | Rotation | processing current(A) | |
| 0.3 | 45# | 2 | 1 | 2 | 0 | 05-Jun | 25 | Y | 3 |
| 0.3 | chilled steel | 2 | 1 | 2 | 0 | 05-Jun | 25 | Y | 3 |
| 0.3 | stainless steel | 2 | 2 | 2 | 0 | 05-Jun | 25 | Y | 3 |
| 0.5 | 45# | 3 | 2 | 3 | 0 | 6 | 25 | Y | 5 |
| 0.5 | chilled steel | 3 | 2 | 3 | 0 | 6 | 25 | Y | 5 |
| 0.5 | stainless steel | 3 | 2 | 2 | 0 | 6 | 25 | Y | 4 |
| 1 | 45# | 3 | 2 | 5 | - | 6 | 20 | Y | 12 |
| 1 | chilled steel | 3 | 2 | 6 | - | 6 | 20 | Y | 12 |
| 1 | stainless steel | 3 | 2 | 4 | - | 6 | 20 | Y | 10 |
| 2 | 45# | 04-Jun | 2 | 6 | = | 6 | 20 | Y | 18 |
| 2 | chilled steel | 04-Jun | 2 | 6 | = | 6 | 20 | Y | 18 |
| 2 | stainless steel | 5 | 2 | 6 | = | 6 | 20 | Y | 16 |
| 3 | 45# | 05-Jul | 2 | 8 | = | 6 | 20 | Y | 25 |
| 3 | chilled steel | 05-Jul | 2 | 8 | = | 6 | 20 | Y | 25 |
| 3 | stainless steel | 7 | 2 | 7 | = | 6 | 20 | Y | 23 |