▲ 3 r/robotics
Dyno for robotic actuators?
Can anyone recommend a dynamometer for testing rotary actuators? There are some thrust stands out there for drone motors (Tyto robotics), but the next step up is dyno's for big, industrial motors. Outside of attaching a weight to an arm to get the stall torque, anything else I could use?
u/Cha-ching-dynasty — 1 month ago
▲ 17 r/robotics
Robotic Actuator Comparison Almanac
Spec the right actuator without clicking through 20 Chinese websites. This is V1 - what else would make this more useful? Other brands or specs you'd add?
u/Cha-ching-dynasty — 2 months ago
▲ 104 r/diyelectronics
DIY Stator Laminations
I've been making some heavy-lift drone motors and wanted to try custom stator geometries. I couldn't find anywhere to get less than X,000 lbs of silicon steel in the States, and the quotes I got for prototype laminations were crazy - like $500-$1,200 per stator.
I ended up buying big batches of 0.2 and 0.35mm silicon steel and have gotten the laser cutting down pretty good (holding ~ .2mm tol, no visible HAZ). The epoxy bonding has been tougher though. We've been testing several fixturing and clamping methods but aren't completey satisfied yet.
I threw together pages on my website, Pendulum Robotics, to lob off small qty silicon steel sheets and lams to anyone looking to DIY/prototype a motor, actuator, transformer, etc.
u/Cha-ching-dynasty — 3 months ago
▲ 1 r/Machinists
LA Build-a-Shop
We make small motors and electronic assemblies in the Los Angeles area and are bringing our machining in house. Looking to start small and buy used if it makes sense. Will contract (~$50/hour) with an experienced machinist who can help us buy the right CNC tools and get them set up (then potentially hire you on to run the shop, if all goes well). Big stuff needed is a mill, lathe, fiber laser -- possibly a mill turn. Mostly al6061 and some steel.
Or if anyone has a reputable source for buying tools in the area, please share.
u/Cha-ching-dynasty — 5 months ago