noob Assembly alignment question

chenken_lupi

Hello,

I'm trying to align 4 cylinder sleeves into a 75 degree V.  Do I need to create the block, or can I locate these in "free space"

LuPi

andrew_troup

@chenken_lupi : 

If you sketch two lines at 75 degrees on a construction plane, you can use those lines to create two planes with that included angle

Then you can sketch two vertical lines on each plane to represent the axes of your cylinders, and these can be used to position mate connectors, with the help of this info:
https://cad.onshape.com/help/Content/web-help/mateconnector.htm

Do come back to seek further clarification if any of this is insufficiently detailed for your needs

r_paul

@chenken_lupi 

This example might help;
https://cad.onshape.com/documents/a17f30f08c0b4c999648e45f/w/db94b0713bb74e659651cc6f/e/9b12b456ff4c48a6ad5416c1

r_paul

chenken_lupi  If you create an Plane>Offset the distance you require between cylinder banks you will be able to, using the new Plane, create a new Sketch and project your existing (cylinder centre) lines into the new sketch.  Then use a similar system to that which you have already done to assemble/place your Cylinder sleeves.
An alternative method may be to place one cylinder sleeve, use the Pattern>Rectangular command to place the second cylinder and then Mirror those two about a Mid-Plane (running parallel to the crank axis) to give a V4 combination.

_Ðave_

chenken_lupi I think I have the same problem, which is I cannot figure out how to get an assembly out of one document and into another, I don't think that it is possible yet. Maybe someone can confirm this or show us where we are stumbling.

r_paul

@chenken_lupi Dave_Petit
Guys, I may stand corrected in that you may not take an 'assembly tab' into another document.  However if you have all your parts in one 'part studio' or single parts in their own 'part studio(s)' they can be taken into another document.
With (open) two separate documents.  In the one you want to transfer from; right click in the 'part studio' tab and select 'copy to clipboard'.  Then switch to the other document and select the '+' sign in the bottom left of screen and select the 'paste tab' option.  That will 'paste' your components into their new file and you can then 'insert' those into an 'assembly tab' and constrain as required.

_Ðave_

Thanks Paul for verifying. That is what i have been doing, was hoping that I was missing something. Guess we'll just have to wait on Onshape and see what they come up with. In the meantime well have to carry on.

andrew_troup

@chenken_lupi : 

If you sketch two lines at 75 degrees on a construction plane, you can use those lines to create two planes with that included angle

Then you can sketch two vertical lines on each plane to represent the axes of your cylinders, and these can be used to position mate connectors, with the help of this info:
https://cad.onshape.com/help/Content/web-help/mateconnector.htm

Do come back to seek further clarification if any of this is insufficiently detailed for your needs

r_paul

@chenken_lupi 

This example might help;
https://cad.onshape.com/documents/a17f30f08c0b4c999648e45f/w/db94b0713bb74e659651cc6f/e/9b12b456ff4c48a6ad5416c1

chenken_lupi

Okay, I had to add a disk to get the part to show up in the list, and with a pair of mates on the line ends in their proper position.  As a side-note I found the masturbate function so I'll never get too bored here anymore.
Another question, I had not much difficulty with the lines, but could only draw on one of the three planes...  Is there a way to move the face of say front, so I can get my second pair of cylinders???

r_paul

chenken_lupi  If you create an Plane>Offset the distance you require between cylinder banks you will be able to, using the new Plane, create a new Sketch and project your existing (cylinder centre) lines into the new sketch.  Then use a similar system to that which you have already done to assemble/place your Cylinder sleeves.
An alternative method may be to place one cylinder sleeve, use the Pattern>Rectangular command to place the second cylinder and then Mirror those two about a Mid-Plane (running parallel to the crank axis) to give a V4 combination.

rbaek

chenken_lupi said:

Hello,

I'm trying to align 4 cylinder sleeves into a 75 degree V.  Do I need to create the block, or can I locate these in "free space"

LuPi

For assembly alignment, you can simply create a mate connector on the face of it and toggle the move checkbox, which will allow you to rotate the mate connector at any angle you please. You can then mate your parts together.

chenken_lupi

Thx,

I now have the cylinder sleeves in their proper position.  However, my Crank and Cylinder arrangement are now in different work-spaces.  I copied the documents, but don't know how to combine the documents, or import export assemblies & parts...

Cylinder Mate, and many parts are currently public

r_paul

@chenken_lupi 
You will use the insert command, assembly constraints and an assembly tab(s) to combine your components into sub and full assemblies. Your on the right track already with your crank.
It might be a little easier (for others to help) if you view some of the videos and tutorials, on assemblies, available. They are quite good, short and succinct.
The link below might be a good place to start
https://www.onshape.com/videos/tutorial-intro-assemblies-and-subassemblies

_Ðave_

chenken_lupi I think I have the same problem, which is I cannot figure out how to get an assembly out of one document and into another, I don't think that it is possible yet. Maybe someone can confirm this or show us where we are stumbling.

r_paul

@chenken_lupi Dave_Petit
Guys, I may stand corrected in that you may not take an 'assembly tab' into another document.  However if you have all your parts in one 'part studio' or single parts in their own 'part studio(s)' they can be taken into another document.
With (open) two separate documents.  In the one you want to transfer from; right click in the 'part studio' tab and select 'copy to clipboard'.  Then switch to the other document and select the '+' sign in the bottom left of screen and select the 'paste tab' option.  That will 'paste' your components into their new file and you can then 'insert' those into an 'assembly tab' and constrain as required.

_Ðave_

Thanks Paul for verifying. That is what i have been doing, was hoping that I was missing something. Guess we'll just have to wait on Onshape and see what they come up with. In the meantime well have to carry on.

chenken_lupi

I just remade all my parts...

By the way, I'm generally F'd up getting it all together it's just a pile of randomly mated circular based objects...