Robobot hardware
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* M6 bolt, length 40mm? | * M6 bolt, length 40mm? | ||
| − | Most screws for metal have | + | Most screws for metal have a Umbraco (Allan) type drive. |
== Screw drive type== | == Screw drive type== | ||
Revision as of 15:41, 30 October 2023
Back to Robobot B
Contents |
Hardware
Mounting holes
The hardware is 3D-printed plastic (except for the electronics and screws)
All 3D printed parts have holes for mounting additional parts. These holes have:
- Individual hole distance of 1cm.
- Hole diameter of 2.5mm, intended for 3mm plastic screws.
- Plastic thickness is 6mm in most cases.
Screws for plastic (PT-screws)
Mounting items on the 3D printed plastic should use plastic screws.
Plastic screws:
- Cut into the plastic with a sharp thread.
- Gets locked in the plastic and will not shake loose.
PT-screw selection:
- Pan-head 3mm diameter and length:
- 6mm, 10, 14mm, 18mm
- Countersunk 3mm
- 10mm, 14mm
Screws for metal
Mounting of motors and other metal parts should use screws for metal.
Metal screw selection:
- M3 pan head
- M3 countersunk (for e.g. motor mount)
- M6 bolt, length 40mm?
Most screws for metal have a Umbraco (Allan) type drive.
Screw drive type
We could unfortunately not standardize on one type of screw drive type
Drive types used:
- Umbraco or Allan-type: plane hexagonal drive and tool (mostly 2, 2.5, 3, 4mm)
- Cross PH (Philips type) is not used much (size PH0, PH1, PH2).
- Cross PZ (Pozidrive) is the most common for cross-drive (size PZ0, PZ1, PZ2).
- 6-lobe or (Tork) (size T10, T15, T20)
