Looking for help with a Weco 2D CNC90

[Brilletje]

Can anybody please explain to me how to adjust the lens size on the weco 2D CNC90? We have recently purchased this machine second hand and it did not come with a manual. Most lenses come out a little bit to big so i suppose i need to run another finish cycle and correct the size. Without manual it is not clear how to do that.
I hope anybody can give me some advice.

[Jacqui]

Contact Wecoman http://www.optiboard.com/forums/member.php/7745-Wecoman he is in The Netherlands.

[MikeAurelius]

I've got the how-to written down at work. I'll post more tomorrow. This will work for the ZET series as well.

[Brilletje]

I've got the how-to written down at work. I'll post more tomorrow. This will work for the ZET series as well.

Thanks! It would be great if you could post the how-to!


I'll also contact Wecoman to see if i can get the manual for this device.

[MikeAurelius]

If you just need to take the lens size down a small amount, the keypad number 3 will reduce the size by 0.1 mm; to go up, the keypad number 1 will increase the size by 0.1 mm.

When you have a traced pattern (personally, I always enter in the A box size in the tracer for reference), once you've keyed in the pattern number, if you press keypad C, this will clear the size and allow you to direct enter a new size. I would use caution doing this, but it does work.

To change the reference size of the lens, you need to alter the cell data in the firmware that is used when the machine starts up.

The edging wheels are numbered like this:
1. Rough (glass)
2. Rough (plastic)
3. Free float
4. Controlled bevel (ZET 90)
5. Flat Bevel

To change the reference size of a specific wheel:

Press the # key.
Press the 2 key.
Press the key number of the wheel you want to change.
Press ENTER.

Mark down the displayed number. This number is the amount of edging wheel head movement from the starting position.

If the edged lens is too large, increase the number.
If the edged lens is too small, decrease the number.

Press the C key.
Enter a new number including the decimal.
Press ENTER.

Press # to exit modification.

I suggest you enter the same number set for positions 3 and 4.

Using dummy lenses, start with the roughing wheel. Use job 0, which should be a 40 mm round pattern. Start the job as normal, except with the BREAK button enabled.

After the roughing cycle is complete and the machine has paused, press the STOP button and remove the roughed lens. With a caliper, measure the diameter of the lens. For "free float or controlled bevel", the lens should have a diameter of 41.5 mm. For "flat" bevel, it should have a diameter of 42 mm.

Make your adjustments per above and rough edge a new lens. Adjust until you achieve the required size. Once you have the roughed lens set properly, then allow the lens to run through the finished edging cycle. Make any adjustments to sizing as required.

I've found through trial and error to set your finish size about 0.3 mm oversize to allow for any frame variations.

Finally, trace a test metal frame and run a dummy lens through. Use a c-sizer to verify sizing and make any further adustments as necessary, remembering that 1 mm of C size equals .3 mm of A box size.

That should do it, hope this helps!!

[Brilletje]

Hi Mike,

Thank you very much for the How-To. Everything is set-up the way it should now!
I think there might be a lot of people that will have great benefit from this how-to.

If you weren't on (almost) the otherside of the world i'd come buy you a beer :-)

[MikeAurelius]

Thanks! Yeah, it's a bit far to come for a beer LOL!