nema 34 stepper motor is accurately measured. I started by accurately calculating the measurements I needed: the position of nema 34 stepper motor, the case and the nozzle. The nozzle in this position gave me a rough outline of the cold end, so it didn’t hit anything.The other features of the cold end and their location are unnecessary.
You don’t need to model the entire component — you just need to model the parts that affect the component being built. It looks like we have a nema 34 stepper motor bracket at the back.
Since all nema 34 stepper motors are built according to the standard, we can apply Rule 1 immediately. First of all, I chose the angle that was the easiest to measure.
According to Rule 1, I can assume that without rotation, the step mode and everything are completely square.Even though there are some unknown advantages of rotating stepping holes, CAD software hates this kind of thing very much.
If I find a hole offset, the rest can be determined. So I just measured the distance from the edge to the inside of the hole, and then added half the diameter of the hole. If math is difficult, I can do it with zero offset technique.
Finally, we must get the offset from nema 34 stepper motor axis to the center of the nozzle assembly, and the nozzle assembly slides into the cold end.