Constrain Problem

[Anonymous]

Hi 

As you see sin the attached picture and as it is in the attached Assembly file, I encountered a problem to Align/Mate constrain the square Tube to the yellow Bracket. Would somebody, please , find what is my error?  I worked on it for about a week but no success.

Many thanks

atajabbas

[Anonymous]

Hi 

As you see sin the attached picture and as it is in the attached Assembly file, I encountered a problem to Align/Mate constrain the square Tube to the yellow Bracket. Would somebody, please , find what is my error?  I worked on it for about a week but no success.

Many thanks

atajabbas

[JDMather]

Center to center distance does not match.

I found numerous other issues as well with unconstrained sketches.

[JDMather]

Center to center distance does not match.

I found numerous other issues as well with unconstrained sketches.

[FINET_Laurent]

Maybe constraint the hole on one side,

Then constraint the other side with angles constraints.

Else change the part so the holes lines up perfectly. 🙂

Regards,

FINET  L.

[FINET_Laurent]

Maybe constraint the hole on one side,

Then constraint the other side with angles constraints.

Else change the part so the holes lines up perfectly. 🙂

Regards,

FINET  L.

[Anonymous]

I put the same distance on both, but still there is difference and I don't know where this come from

thank you Mr. Mather

ata

[Anonymous]

I put the same distance on both, but still there is difference and I don't know where this come from

thank you Mr. Mather

ata

[johnsonshiue]

Hi Aaron,

The distance between the two holes on the brackets is different than the hole span on the frame member. Use Measure tool and turn on all decimals to see the slight difference. How are the holes created?

Many thanks!

[johnsonshiue]

Hi Aaron,

The distance between the two holes on the brackets is different than the hole span on the frame member. Use Measure tool and turn on all decimals to see the slight difference. How are the holes created?

Many thanks!

[Anonymous]

I have deleted most  unnecessary parts to simplify the Assembly file.

As you see in the attached pic 3 and pic4 that the center distance is the same. This have happened when I removed the angle 0f 3 Deg. constrain. The deviation in distance happens when apply Angle constrain. Now surface mate has been done very good but, still needed the Align mate as seen in pic 1 and pic 2, but it is not working in the attached Assembly files. I'm unable to find the fault.

Thank you

atajabbas

[Anonymous]

I have deleted most  unnecessary parts to simplify the Assembly file.

As you see in the attached pic 3 and pic4 that the center distance is the same. This have happened when I removed the angle 0f 3 Deg. constrain. The deviation in distance happens when apply Angle constrain. Now surface mate has been done very good but, still needed the Align mate as seen in pic 1 and pic 2, but it is not working in the attached Assembly files. I'm unable to find the fault.

Thank you

atajabbas

[JDMather]

I still Measure a difference.
In your images - I do not see where you measured the second part?

[JDMather]

I still Measure a difference.
In your images - I do not see where you measured the second part?

[Anonymous]

Many thanks for your reply.

Please note the attached pic, the measure is with 6 places precision and  it is OK, while if you open the file of the square tube, the measure is as per the attached picture no.2 while in the Assembly , it gives error, so where is the fault? and how can I avoid such error?

Thankyou

Yours,

atajabbas

[Anonymous]

Many thanks for your reply.

Please note the attached pic, the measure is with 6 places precision and  it is OK, while if you open the file of the square tube, the measure is as per the attached picture no.2 while in the Assembly , it gives error, so where is the fault? and how can I avoid such error?

Thankyou

Yours,

atajabbas

[JDMather]

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@Anonymous wrote:

and how can I avoid such error?

---

How did you create the holes in the rectangular tube (there are no sketches with dimensions)?

[JDMather]

---

@Anonymous wrote:

and how can I avoid such error?

---

How did you create the holes in the rectangular tube (there are no sketches with dimensions)?

[JDMather · Accepted solution]

---

@Anonymous wrote:

Please note the attached pic, the measure is with 6 places precision

 Neither one of these pictures show a measurement Precision of 6 decimal places???

[JDMather · Accepted solution]

---

@Anonymous wrote:

Please note the attached pic, the measure is with 6 places precision

 Neither one of these pictures show a measurement Precision of 6 decimal places???

[johnsonshiue · Accepted solution]

Hi Aaron,

The hole span on the frame member is still off. It measures 52.250069213", while the brackets measure 52.25" precise.

Many thanks!

[johnsonshiue · Accepted solution]

Hi Aaron,

The hole span on the frame member is still off. It measures 52.250069213", while the brackets measure 52.25" precise.

Many thanks!

[Anonymous]

I sometimes wish when constraining there was an option to relax to a certain amount of decimal places. In this example it has no need to be that accurate. It shouldn't be a problem if parts are designed correctly but there are times when you import something that isn't very accurate and these kinds of things happen.

[Anonymous]

I sometimes wish when constraining there was an option to relax to a certain amount of decimal places. In this example it has no need to be that accurate. It shouldn't be a problem if parts are designed correctly but there are times when you import something that isn't very accurate and these kinds of things happen.

[JDMather]

@Anonymous 

There is a strategy that works, but I am hesitant to mention it as then the underlying explanation of why this distance is off would be missed.

[JDMather]

@Anonymous 

There is a strategy that works, but I am hesitant to mention it as then the underlying explanation of why this distance is off would be missed.

[Anonymous]

Hi sir,

As I'm thanking you so much for your efforts and reply's. I created the holes by Bolted Connection tool, but I have deleted them and I created new holes as per the new attached zip pack.

Indeed, I thought that the Measure tool will follow the settings of the document where I put the decimal places to 6 places and I didn't know that there are options for decimal places in the Measure. How ever I'm thanking you for you corrected me and accordingly I overcome the problem of the Align Constrain as you see in the attachments.

Still the main problem that the square tube and the Yellow Brackets should move in rotation an angle of 3 Deg, with respect to the long round tubes but it does not accept to rotate as you see in the attached picture.

Thank you,

atajabbas

[Anonymous]

Hi sir,

As I'm thanking you so much for your efforts and reply's. I created the holes by Bolted Connection tool, but I have deleted them and I created new holes as per the new attached zip pack.

Indeed, I thought that the Measure tool will follow the settings of the document where I put the decimal places to 6 places and I didn't know that there are options for decimal places in the Measure. How ever I'm thanking you for you corrected me and accordingly I overcome the problem of the Align Constrain as you see in the attachments.

Still the main problem that the square tube and the Yellow Brackets should move in rotation an angle of 3 Deg, with respect to the long round tubes but it does not accept to rotate as you see in the attached picture.

Thank you,

atajabbas

[Anonymous]

I think that there should be in the constrain tool to accept some miss alignment  and it should work for all types of constrains where this will give the designer some freedom in the work

[Anonymous]

I think that there should be in the constrain tool to accept some miss alignment  and it should work for all types of constrains where this will give the designer some freedom in the work

[Anonymous]

Hi Mr. Mather,

 I'm thanking you so much for your efforts and reply's. I created the holes by Bolted Connection tool, but I deleted them and I created new holes as per the new attached zip pack and thank you for your solution.

Indeed, I thought that the Measure tool will follow the Settings of the Document where I put the decimal precision to 6 places and I didn't know that there are options for decimal places in the Measure Tool.

However I'm thanking you for that you corrected me and accordingly I overcome the problem of the Align Constrain as you see in the attachments.

Still the main problem that the Square Tube and the Yellow Brackets should  rotation an angle of 3 Degs, with respect to the long round tube but it does not accept to do the rotation as you see in the attached picture.

Thank you,

atajabbas

[Anonymous]

Hi Mr. Mather,

 I'm thanking you so much for your efforts and reply's. I created the holes by Bolted Connection tool, but I deleted them and I created new holes as per the new attached zip pack and thank you for your solution.

Indeed, I thought that the Measure tool will follow the Settings of the Document where I put the decimal precision to 6 places and I didn't know that there are options for decimal places in the Measure Tool.

However I'm thanking you for that you corrected me and accordingly I overcome the problem of the Align Constrain as you see in the attachments.

Still the main problem that the Square Tube and the Yellow Brackets should  rotation an angle of 3 Degs, with respect to the long round tube but it does not accept to do the rotation as you see in the attached picture.

Thank you,

atajabbas

[j.palmeL29YX · Accepted solution]

If you want to rotate the brackets, the holes must be aligned (on a common axis). They do not, there is a distance of 0.5 in).

(You used two different brackets, "213-U Bracket 2" and "213-U Bracket 1.5". )

[j.palmeL29YX · Accepted solution]

If you want to rotate the brackets, the holes must be aligned (on a common axis). They do not, there is a distance of 0.5 in).

(You used two different brackets, "213-U Bracket 2" and "213-U Bracket 1.5". )

[Anonymous]

Thank you sir.

Yes, yes. it is wright the 2 brackets should be on the same axis to gate same rotation.

Thank you so much for your help.

atajabbas

[Anonymous]

Thank you sir.

Yes, yes. it is wright the 2 brackets should be on the same axis to gate same rotation.

Thank you so much for your help.

atajabbas

[johnsonshiue · Accepted solution]

Hi! Indeed, I don't understand how a rigid body is supposed to rotate around two different axes without deforming. There is a design flaw here. The rotation axes have to be colinear (aligned).

Many thanks!

[johnsonshiue · Accepted solution]

Hi! Indeed, I don't understand how a rigid body is supposed to rotate around two different axes without deforming. There is a design flaw here. The rotation axes have to be colinear (aligned).

Many thanks!

[Anonymous]

Yes sir, you are right

Many Thanks

[Anonymous]

Yes sir, you are right

Many Thanks