impact engraver

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09 Oct 2022 01:14 #253788 by vre
impact engraver was created by vre
Hello.
I want to build an impact raster engraver.
X-Y axis are with belt transmision and Z with small ballscrew trivial kinematics.
Z axis is only for correcting height anomalies in engraving material.
The impact hammer is done by a small stepper motor that has coupled a small arm
that has attached a small diamond needle at the end.
For example when load an one bit dithered bmp image file and set engraving speed for example 100mm/s the motion must be constant speed inside engraving area (acceleration-deceration must done outside engraving area) and synchronized with needle impacts.
How this can be done with mesa card?

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09 Oct 2022 01:31 #253791 by tommylight
Replied by tommylight on topic impact engraver
Impact is way to slow, and it is not that simple, the impact stepper also needs speed control that has to be dependent on the depth of the picture.
I made them with a DC motor and spindle and another DC motor for pressure, lately i use small digital 3 phase motors for pressure and DC motor for spindle.
Have a look:
forum.linuxcnc.org/10-advanced-configura...-superimposing-a-pic
forum.linuxcnc.org/show-your-stuff/46752...ver-etcher-scratcher

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09 Oct 2022 07:31 #253803 by vre
Replied by vre on topic impact engraver
Is not too slow and gives far better quality than rotating diamond bit method

Something new about integration in linuxcnc of datapainter mesa firmware ?

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22 Oct 2022 11:02 #254746 by andypugh
Replied by andypugh on topic impact engraver
This does sound like a job for the datapainter. I don't know if anyone has made that work with the LinuxCNC drivers yet?

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26 Oct 2022 16:21 #255104 by vre
Replied by vre on topic impact engraver
yes datapainter.. any info about that ?

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