LPKF ProtoMat 93s Manual
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This provides the following benefits:
1. The depth limiter rides on the surface of the material. The working depth limiter
follows warped PCBs.
2. The material is held down within certain limits by the working depth limiter.
The head is lowered with a solenoid and raised with a spring.
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The LPKF ProtoMat 93s working depth limiter
1. Holding plate
2. Knurled nut used to set milling depth
3. Holding block for working depth limiter
4. Suction nozzle
5. Tool fixture ( collet for manual clamping)
6. Scanning ring in the working depth limiter
Milling depth is set by adjusting the knurled nut (2) on the working depth limiter.
When the wheel is turned clockwise, the milling depth is increased, while it is
reduced when turned counterclockwise. The milling depth is altered by about 4 µm
(0.0008 inch) per step. Turning the knurled knob in counter-clockwise direction is
difficult when the head is lowered.
