Tailstock Slider joint not driving when driven

[tyethgundry]

Hey, thanks for taking the time to read this. I've imported a step file for my rotary axis tool, and want to use it later as a fixture. So my plan was to add joints at each axis (done), setup some rigid groups for each component / rotary section, and a few joints.

I think I'm there, as the motion link works for the chuck jaws, rotary is fine, and the tailstock rotary and pin slider joints work, but the slider between the base plate component and tailstock doesn't react when driven. I guess I have my rigid groups wrong or something?

My inclination was to goto the tailstock and setup rigid joints between bolt + washer, washer and base/arch, etc, but I'd originally assumed I could just rigid group the lot instead.

Please help educate me as to where I've gone wrong in actions or assumptions!

https://a360.co/3K8ARmo

Thanks,

Tyeth.

[jhackney1972 · Accepted solution]

Your model has a lot of components which lack joints but I fixed the Tail Stock slider joint.  Basically the base was not defined in position so the Tail Stock did not have anything to work from.  I added a Slider Joint to the head stock as well.  The Joint is labeled.  Model is attached.

[tyethgundry]

Ah thanks John!

So how does one do a fixed / rigid joint from the base to the workspace/origin? I see there is now a "Pin" option set on the base plate component which appears initially to do it. 

When I then use this model in another design, joint connect the two, and then rotate the chuck joint, it rotates the whole 3-part component instead of the model in the new design. Like it's ignoring the pin of the base. Do I need to ground to parent or something? Probably I should start a new question. Thanks again for your help.