Kirk Wallace wrote: > I am planning to make an encoder for my tool changer: > > http://www.wallacecompany.com/machine_shop/Shizuoka/00030-1a.jpg > http://www.wallacecompany.com/machine_shop/Shizuoka/Tool_Changer_Encoder-1a.png > > I was going to drill holes into a disk with a binary bit pattern and > clock bit. It's not very elegant and larger than I like. Does anyone > know of an existing (inexpensive) absolute encoder that would work? >
You may want to change that to Grey code encoder. http://www.mcmanis.com/chuck/robotics/projects/encoders/enc_gray.htm where only one bit changes at a time. This of course makes it difficult to use a drilling method. this seems to be the cheapest part but it only has 50k life cycle. http://parts.digikey.com/1/parts/957638-rotary-encoder-4-bit-grey-code-288t232r162a1.html here's one homemade encoder: http://www.qsl.net/oe5jfl/encoder.htm > (By the way, here is an interesting variation of my changer. > http://www.youtube.com/watch?v=JjBjR2Z3fqk > I don't know if it's better to have an arm or move the whole carousel? > > I've also noticed that the taper on NMBT40 is the same as CAT40, so if I > could come up with a stud puller in place of my power draw bar, I could > use the more common CAT holders. Just a thought.) > ------------ > Kirk > http://www.wallacecompany.com/machine_shop/ -- Rafael ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
