Hi, anyone knows about/uses clevis joints on their deltas? Weiss uses them on some delta robots. And so do some of the Chinese delta pick and place robot manufacturers. Cost of a custom solution aside what's the downside of these? https://reprap.org/forum/read.php?178,893694,893694#msg-893694 Sun, 08 Mar 2026 19:38:28 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?178,893694,893718#msg-893718 https://reprap.org/forum/read.php?178,893694,893718#msg-893718 Anon1337 Delta Machines Tue, 31 Oct 2023 14:03:39 -0400 https://reprap.org/forum/read.php?178,893694,893716#msg-893716 https://reprap.org/forum/read.php?178,893694,893716#msg-893716 There are a lot of variation in construction, some with a hole in the bearing, some with a stud sticking out. I like the plastic rod end bearings from IGUS as they have a long service life with minimal maintenance.

Mike]]> leadinglights Delta Machines Tue, 31 Oct 2023 11:13:22 -0400 https://reprap.org/forum/read.php?178,893694,893711#msg-893711 https://reprap.org/forum/read.php?178,893694,893711#msg-893711
And the joints on the Tractus3D printers? How are these called? The ones with the stud mated to the rod end.
Are these custom made?]]> Anon1337 Delta Machines Tue, 31 Oct 2023 07:06:31 -0400 https://reprap.org/forum/read.php?178,893694,893695#msg-893695 https://reprap.org/forum/read.php?178,893694,893695#msg-893695 Gimbal joints were used on the earliest Delta printer such as the Rostock, but were rapidly replaced by ball joints of various sorts - including the magnetic joints common now.
I think that gimbal joints have more play and some geometric errors that ball joints do not have, but are preferred in things where the acceleration can be quite large. In a 3D printer, most of the movements are during printing and the speed and acceleration are constrained by how fast plastic can be laid down. Conversely, in a pick-and-place machine, most of the time is spent moving from the supply of parts to the destination so higher speeds and accelerations are desirable.
Video of a Rostock from 10 years ago with the "Spicer joints" clearly visible [www.youtube.com]]]> leadinglights Delta Machines Fri, 27 Oct 2023 13:51:31 -0400 https://reprap.org/forum/read.php?178,893694,893694#msg-893694 https://reprap.org/forum/read.php?178,893694,893694#msg-893694 anyone knows about/uses clevis joints on their deltas? Weiss uses them on some delta robots. And so do some of the Chinese delta pick and place robot manufacturers. Cost of a custom solution aside what's the downside of these?]]> Anon1337 Delta Machines Fri, 27 Oct 2023 11:42:27 -0400