We had a contract to make a gantry scanner table for 4k$ 1mx1m. and this was the result

[D.A.(Tony)Stewart]

We had a contract to make a gantry scanner table for 4k$ 1mx1m. and this was result

https://www.icloud.com/sharedalbum/#B0CGWZuqDGoOuWp;975D7E0E-199E-4B14-9890-74AE7C34B905

 

[c_mitra]

Re: We had a contract to make a gantry scanner table for 4k$ 1mx1m. and this was resu

What the contract said? Did you provide a detailed specification?

(Perhaps the contract went to a lawyer!)- no offence meant.

 

[D.A.(Tony)Stewart]

Re: We had a contract to make a gantry scanner table for 4k$ 1mx1m. and this was resu

We spoke with client, wrote up specs, provide 3D CAD model of conceptual design , then got PO.

1mm accuracy over 1000 mm square table for magnetometer scanning. With 1/4 step I get 0.25mm resolution and about 600mm/s speed and 1/16 step is of course smoother and lower.

I can print out a laser ruler on client's plywood base and adjustable Z axis legs will be included.

For fun I printed a 350pix JPG image onto a wood box, which with only 1W laser toy takes a couple hrs.

 

[D.A.(Tony)Stewart]

gantry scanner table on UNO from PC control

Update with https://www.youtube.com/attribution...=/watch?v=-jNNagHl26o&feature=em-upload_owner.
Added Arduino card with CNC 4axis Shield
Upgraded software with GRBL Panel
Created XY spiral test pattern in Excel with Gcode and read by GRBL Panel
It works perfect as expected.

Final Assy is incomplete needing Arduino case, legs corner braces and cable straps ready for laser, magnetometer or plotter use.

 

[c_mitra]

Re: We had a contract to make a gantry scanner table for 4k$ 1mx1m. and this was resu

Update with https://www.youtube.com/attribution...=/watch?v=-jNNagHl26o&feature=em-upload_owner...

The noise is crying out for attention.

 

[D.A.(Tony)Stewart]

Re: We had a contract to make a gantry scanner table for 4k$ 1mx1m. and this was resu

Yes that was intentional. With interpolated smooth 0.1mm resolution in continuous motion it is almost silent , but this was a series of big jogs and the 1.2m X axis has a natural resonance that can be tightened from bearing tension and disappears by eliminating macro steps into small smooth velocity control which are only sub sonic spectrum. In laser print mode all you hear is the quiet step rate of the motor.

Back when Maxtor made the first high speed disk drive I had SN 7 and all production units had an R2D2 calibration sound to measure servo gain. By comparison it was much louder. During cal. This is SN 1 and it's 1st test, so yes now I can optimize it.

- - - Updated - - -

https://m.youtube.com/watch?feature=em-upload_owner&v=I7DCYEM3dW8

Square corner test. Rubber edges making annoying sound. Gear centred but dome nylon guides must be tilted