Re: [PSES] Reduce Speed of Moving Part to Reduce Risk

2024-01-29 Thread sgbrody
That standard is ISO 15066 which is Collaborative Robots.  After measuring force and then determining the surface areas of the part contacting whatever, you can determine the pressure.This standard provides tables for allowable forces and pressures - both are needed - to determine if the robot

Re: [PSES] Reduce Speed of Moving Part to Reduce Risk

2024-01-29 Thread Douglas Powell
All valid points; however, I was taking my information from the established ISO/IEC standards for machinery, with which I am familiar. I do recall another standrd some years ago, mentioning contact surface area when I was looking into finger crush as well as sharp edges. And the original question

Re: [PSES] Reduce Speed of Moving Part to Reduce Risk

2024-01-29 Thread Richard Nute
Hi Doug and Brian: I thought I would offer my (radical) point of view on the issue of “speed of moving parts.” Consider moving aluminum foil and moving aluminum block, both at the same speed. The aluminum foil has very little mass, while the aluminum block has relatively high mass.