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I want to an anotation line with 2 arrows as described in picture.
May anyone help me, thank you
Categories: Drawings and Detailing
Holding down the ctr key while using the command you can add more than one arrow
I still can't do exactly what is described in picture, when I hold down ctrl , it just create another coppy of line, not line with 2 arrow and 2 text
mark the annotation
Holding down the ctr key
drag n drop the green point at the arrow
You can use the "Multi-jog leader" (insert annotations). Click starting point, move curser to where you want to end it and double click to stop the command.
Edit:... I see that you are using 2008.. So I'm only assuming that the multi-jog leader command is available to you.
The circled arrows in your image are from a symbol not a leader.
Place your note with no leader and select "Add Symbol" from the property manager:
More Symbols > Geometric tolerancing. Select the "Between" symbol:
Thank @Logan Pegler, do you know the meaning of that line and P1, P2, P3, P4 in my drawing?
Tran Van Quang wrote:...do you know the meaning of that line and P1, P2, P3, P4 in my drawing?
Tran Van Quang wrote:
...do you know the meaning of that line and P1, P2, P3, P4 in my drawing?
Those mark locations on the part. The PROFILE OF A SURFACE applies between points P1 & P4
But there are 4 point P1,P2,P3, P4. Why are only P1 and P4 indicated?
Tran Van Quang wrote:But there are 4 point P1,P2,P3, P4. Why are only P1 and P4 indicated?
Tran, your picture is only a small [portion of the part drawing...
In that small picture I see P3 is also defined.
I assume there are other geometric dimensions that reference all 4 points and that P2 is defined somewhere.
If not, then the drawing is over defined by virtue of P3 and P3 can be safely ignored.
Tran, you really need to get a fundamental understanding of Geometric Dimentioning and Tolerancing before proceeding very much further. There are some great links above. Study them and find a human that understands GD&T and ask them in person to explain a bit further. It is very hard to teach GD&T from a keyboard.
One thing which doesn't make sense to me that it's a "profile of surface", why it's ref. to points?
please see below image for ref - the top surface of the part is 0.2 to datum A and B
Not sure what standard this dwg was used for but seems to me that from P1 to P4
However, this is a profile of surface GDT, so it should ref. to surface, not poitns, see my other response
Here a shot from my GDT book
Sorry, I misunderstood your original message, I believe the double-arrow between P1 and P2 was inserted from a block
Christian, his was a correct callout based on ASME Y14.5M as long as the location of the points is defined by either basic dimensions or geometry. The points are referencing a specific area that is to be controlled.
Although it is also acceptable to use the double arrow symbol as he is doing.
The tangent of 2 arcs is commonly used as a defined point.
It usually isn't critical to get the points defined to a perfectly defined level. The intent is to apply the PROFILE OF A SURFACE to a region of the part.
It's not in the ASME standard, but a modicum of common sense is required.
Agreed if you can define 2 pointed as showing in your image
However, his is more like round shape and how to determine from 2 points as the below image
and here is how I clearly selected the surfaces
1-AG4JLT wrote: The tangent of 2 arcs is commonly used as a defined point.It usually isn't critical to get the points defined to a perfectly defined level. The intent is to apply the PROFILE OF A SURFACE to a region of the part. It's not in the ASME standard, but a modicum of common sense is required.
it's just a note !!!
I think I'd better stop making assumption until I can see the whole dwg
I have seen both of these ways before:
PROFILE OF A SURFACE or PROFILE OF A LINE is defined via BASIC dimensions.
The BASIC dimensions defines "perfect profile" of a shape.
A computer (a CMM) is generally used to take points of an actual part and the software compares the actual shape to the "perfect profile" shape with a band around the "perfect profile".
The band can be unilaterally placed or offset favoring one side or the other.
The shape you show can be easily check in a CMM with Renishaw probe or a laser probe. However, you don't show the BASIC dimensions that will define the "perfect profile"
the top view clearly shows the geometry of the part.
Please see the below image - without the top view, how to define 2 points from the front view?
Again, it's not right/wrong here. It's just to make sure it's totally clear to those who read the dwg and make/inspect the part
Here's a example of a part we make with several profile call-outs...
Notice that all of the geometry governed by profile call-outs are BASIC.
Here's another example (from real world parts)...
Here's one that is specified unilaterally...
it's very helpful !!!
Which device do you use to check your profile tolerance in real as well as other tolerance. May you tell me your experience to choose value for profile tolerance too.
Tran Van Quang wrote:Which device do you use to check your profile tolerance in real as well as other tolerance...
Which device do you use to check your profile tolerance in real as well as other tolerance...
Video Measurement Systems
we use optical equipment to capture the object and compare it with the actual 3D model (SW) for the first article report. The tolerance can be varied depend on the features - For housing (industrial Design), the tolerance can open up to .2. however, it's more tighter for fitting
Christian Chu wrote:we use optical equipment to capture the object and compare it with the actual 3D model (SW) for the first article report.
Christian Chu wrote:
we use optical equipment to capture the object and compare it with the actual 3D model (SW) for the first article report.
Problem is, optical can only get you PROFILE OF A LINE
To do PROFILE OF A SURFACE you will need a Renishaw probe or similar.
We have similar equipment (make by S-T) as shown in your image and, yes, to check the surface profile for fitting - we don't have any vision system and depend much on our vendors as they have state of the art CMM equipments
Do you apply the datum reference in your drawing when you checking the profile tolerance with that machine
Tran Van Quang wrote:Do you apply the datum reference in your drawing when you checking the profile tolerance with that machine
Yes. The software package that accompanies the CMM does the heavy lifting. Operator will create a "program" for each part he will inspect. He tells the machine which edges are the datum edges and what the basic sizes are then picks-up (using Renishaw probe) the surfaces. Computer outputs a report on whether part is in tolerance or not.
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