The meeting opened with a video of the 2017 FirstRobotics team challenge. This is a follow up on the excellent presentation made by 4039.com team last month. As with past years, they have 6 weeks to design, prototype and develop a robot along with related marketing materials and strategies to win the competition.
Up next were several presentations by members:
A discussion of hand sharpening end mills. Generally you can carefully hand grind the ends. Alternatively you can round off the tips as these are the part that usually get dulled. Handgrinding the helix/sides is not practical by hand.
A novel lathe threading tool holder was shown, this automatically lifts the tool when you reverse the machine to back the tool up to start position. Only a light pressure is needed to raise the tool lending its use even with fine threads.
This is a small milling/drilling spindle that fits into the spindle of a milling machine. Drive is by flex shaft. The collet is by Dremel.
Work continues on a radial aircraft engine. A cutter was made to cut the splines on propeller shaft.
A member enhanced his Atlas lathe by fitting a digital caliper as carriage travel indicator.
An interesting end mill sharpening holder was displayed. The spindle rides on 2 sets of 3 hardened steel pegs to reduce friction. We couldn’t figure out which brand.