Robobot hardware: Difference between revisions
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* Plastic thickness is 6mm in most cases. | * Plastic thickness is 6mm in most cases. | ||
== | ==Screws for plastic (PT-screws)== | ||
Mounting items on the 3D printed plastic should use plastic screws. | Mounting items on the 3D printed plastic should use plastic screws. | ||
| Line 22: | Line 22: | ||
* Gets locked in the plastic and will not shake loose. | * Gets locked in the plastic and will not shake loose. | ||
PT-screw selection: | |||
* Pan-head 3mm diameter and length: | * Pan-head 3mm diameter and length: | ||
** 6mm, 10, 14mm, 18mm | ** 6mm, 10, 14mm, 18mm | ||
* Countersunk 3mm | * Countersunk 3mm | ||
** 10mm, 14mm | ** 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 the Umbraco or Allan-type drive | |||
== Screw drive type== | |||
We could unfortunately not standardize on one type of screw drive type | |||
Drive types | |||
* Umbraco or Allan-type: plane hexagonal drive and tool (mostly 2, 2.5, 3, 4mm) | |||
* Cross PH (Philips type) is not used much. | |||
* Cross PZ (Pozidrive) is most common for cross-drive. | |||
* 6-lobe or (Tork) | |||
Revision as of 12:02, 22 October 2023
Back to Robobot B
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 the Umbraco or Allan-type drive
Screw drive type
We could unfortunately not standardize on one type of screw drive type
Drive types
- Umbraco or Allan-type: plane hexagonal drive and tool (mostly 2, 2.5, 3, 4mm)
- Cross PH (Philips type) is not used much.
- Cross PZ (Pozidrive) is most common for cross-drive.
- 6-lobe or (Tork)
