MPCNC PRIMO Inductive Switch Mount/Support (auto squaring)

STANDARD PRIMO and ALU PROFILE FRAME 30x30

I have designed a support for using inductive switches with the MPCNC PRIMO.

These parts can be used for the standard PRIMO with legs (pipes 25mm) but also Alu-Profiles (Frame) 30x30mm.

The support was designed with the following requirements:

• The inductive switches will be used instead of the end stoppers
• … but mostly these switches will be used for auto-squaring
• I wanted to design a support/mount that can be used for start/end so that every truck needs only 1 switch.

Here is Version 1.0 of the Inductive Switch Support including a couple of parts. The mount is designed for 12mm inductive switches. In my case I am using NPN NO (normally open): LJ12 A3-4-Z/BX - 6V - 36V DC.

In addition to the printed parts I have used “rivet nuts” to get high quality threads within the parts.

The rivet nuts will be implemented in the parts using a soldering iron. Heating it up you can melt-in the nut and you will get a nice and strong connection with the thread and the 3D-part. You need to use M5 rivet nuts. I used aluminium nuts with a height: 13mm / diameter: 6,9mm / head diameter: 9,8mm / M5 thread.

The mount for the switch will be attached in the middle of the truck in a way that the switch will be placed under the truck. On a 15x15mm Aluminium “rail” a mount and a sliding carriage (adjustable in height and moving direction of the truck) will be installed with the possibility to use a screw (metal) for the inductive signal. On the Alu-rail you can install 2 mounts/sliding carriages for start/end signal using only 1 inductive switch per truck.

• sliding carriage has 1 nut for the “signal screw” and a slot to fix it at the rail mount (adjustable)
• rail mount has 2 nuts, 1 to fix the sliding carriage, 1 (bottom) to fix the mount with the Alu rail
• for my Alu-Profil Frame I have also created some holder to fix the Alu-rail at the 30x30 Frame at the ends

The parts are designed in a way that they are usable for both pipes (X-direction and Y-direction) even if the y-axis is mounted “over” the x-axis. The slider is long enough to support it.

Update 2020-11-16:

Added an inductive switch mount for z-axis.

Print Settings

Printer Brand:

Prusa

Printer:

Rafts:

No

Supports:

Resolution:

0.3

Infill:

Filament: no matter PLA, PETG, ASA, CPE every color you like

Notes:

Category: Machine Tools