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leech10
Posts: 40
Registered: ‎01-24-2012
Message 11 of 44 (243 Views)

Re: Rounf extrusion

12-12-2012 10:33 AM in reply to: JDMather

Hi

 

 

Now looks better. 

Active Contributor
leech10
Posts: 40
Registered: ‎01-24-2012
Message 12 of 44 (230 Views)

Re: Rounf extrusion

12-12-2012 11:13 AM in reply to: leech10

Thnak you very much. I found what I was doing wrong. I did my valve now it is fully constrained. I know it was very simple and stupid, but I got it I have not noticed that I have to constrain this point on the spline:smileysad:. I will try to fix the rest of my parts now. If I need help( and for sure I need) I will ask more. 

 

Regards

 

*Expert Elite*
JDMather
Posts: 26,161
Registered: ‎04-20-2006
Message 13 of 44 (226 Views)

Re: Rounf extrusion

12-12-2012 11:29 AM in reply to: leech10

Another little tip - if you change this line to center line (upper right corner of screen) you can avoid calculations.

I always try to avoid calculations if the geometry will solve the problem.

 

Center line.png

 

I'm also going to nit-pick clearances between cylindrical shafts and the holes they are supposed to go into.

There must be clearance in the real world for the parts to move - might as well design them that way.

Please mark this response as "Accept as Solution" if it answers your question.
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Active Contributor
leech10
Posts: 40
Registered: ‎01-24-2012
Message 14 of 44 (217 Views)

Re: Rounf extrusion

12-12-2012 12:19 PM in reply to: JDMather

Could you please check this part. I drawn it once more 

Distinguished Mentor
john.retzlaff
Posts: 894
Registered: ‎11-03-2003
Message 15 of 44 (214 Views)

Re: Rounf extrusion

12-12-2012 12:32 PM in reply to: leech10

See attached for some ideas.

John Retzlaff
Active Contributor
leech10
Posts: 40
Registered: ‎01-24-2012
Message 16 of 44 (198 Views)

Re: Rounf extrusion

12-12-2012 03:23 PM in reply to: john.retzlaff

Thanks for help. Without it I would not finish it.

 

I will ask you about assembly after I finish parts tommorow. now I know how to do this. 

 

Regards

Active Contributor
leech10
Posts: 40
Registered: ‎01-24-2012
Message 17 of 44 (186 Views)

Re: Rounf extrusion

12-13-2012 03:13 AM in reply to: leech10

Hi

 

I am lost with dimensions again. I attached file where 2 dimansions are still needed but I dont know how to find them. I tried many but without success. Is there any easy way to determine which are missing

 

Also the one in the picture. 1 dimension is missing, but which one? I tried tangent constrain so it alligned inner circle to outer one but it is still missing constrain.

 

I have made it fully constrained but I had to add one vertical line, not only dimension. For me it looks strange but if it must be done this way I will leave it

 

 

regards

 

Distinguished Mentor
john.retzlaff
Posts: 894
Registered: ‎11-03-2003
Message 18 of 44 (170 Views)

Re: Rounf extrusion

12-13-2012 05:34 AM in reply to: leech10

See attached.

Do you really need to use splines?  Much simpler to us multiple radii.

Project the axis and use mirror constraints to make both sides the same.

Do this at the start of the sketch, It will be much easier to constrain.

Start with your functional elements, the diameter at the top and the radius at the bottom and get them constrained first.

Then build the outside around that.

John Retzlaff
Active Contributor
leech10
Posts: 40
Registered: ‎01-24-2012
Message 19 of 44 (132 Views)

HRe: Rounf extrusion

12-13-2012 01:17 PM in reply to: john.retzlaff

Hi

 

Finally I made sth like this. I put it into assembly, enabled contact set and constrained it. I dont know how to set the cylinder verticaly to ground,  and how to move the crank to move piston up and down. How do you set for example having rod placed exacly in the middle od the crank. Aso I dont know how to set crank to do rotating movement, not moving from left to right and up and down. 

 

 

 

regards

 

*Expert Elite*
JDMather
Posts: 26,161
Registered: ‎04-20-2006
Message 20 of 44 (129 Views)

Re: HRe: Rounf extrusion

12-13-2012 01:24 PM in reply to: leech10

I will try to show you how to do the assembly tomorrow if someone else doesn't jump in here.

 

I know you are following a tutorial, but I thought you might want to see an easier technique to model one of your parts.

Closely examine the sketch part and the solid part files attached.

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
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