Questions tagged [drafting]
Questions about tools and techniques for technical drawing. If your problem is mainly with a particular software package, consider using a tag for that software package instead.
89 questions
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What is the shape of the material between the 5" diameter plate and the vertical cylinder
I am tinkering with this 1944 Axle drawing for a spitfire. I have drawn up all of the part with the exception of the connection area between the vertical cylinder and the 5" diameter disc.
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Interpretation of tolerances for a microchip's leads (position and profile)
In this diagram, taken from a JEDEC microchip drawing (https://www.jedec.org/standards-documents/docs/ms-012f - requires free registration). It is drawn per ASME Y14.5M-1994.
[
With datum C being the ...
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Constraining Part in assembly by reference point
For starters I now have access to Inventor Professional 2023 and I am no longer restricted to Inventor Lite.
I am playing with inventor assemblies to see what I can get it to do for modelling bridge ...
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how to interpret ISO2768-mK angular tolerance
How to apply tolerance for angle based on ISO-2768-mK? Cause I am confused about the statement "Permissible deviations in degrees and minutes for ranges in nominal lengths". Lets say I have ...
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What reference lines can be trusted and what points are being dimensioned
Based on the dimensions for the fold lines of the part above, the part is not square in the corners. It is my understanding that the short sides are actually at an angle other than 90 to the long ...
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Is a geometric straight tolerance allowed on threaded bolts?
A custom bolt-like part needs to be particularly straight. Can a geometric straightness tolerance be added on the threaded part of the bolt or can it only be added before threading? The example can be ...
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How to place a chamfer on the end of an angle cut pipe
Background
The part above is from 1944 V2 plans which I am using as real world practice examples to teach myself 3D modeling using Inventor LT 2021. Therefore there is no original designer/engineer ...
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Thread indicator and modelling
In my on going series of teaching myself to model machine parts in Inventor, I keep stumbling across the following scenario for both external and internal threads. My reference drawing are from the ...
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Replicate loft-based object to value-driven object
I've made the following oddity in Solidworks:
All the dimensions are known except for the top part. This is probably because this was done using the Lofted Boss/Base feature. The Loft profile goes (...
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Help with engineering graphics
Please redirect me if this is the wrong place to post this, however I've been having issues with something for engineering graphics classes and need some help
I'm supposed to draw two intersecting ...
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How to visualize angle of projection in Oblique Parallel Projection?
We know that in Oblique Parallel Projection Point $(x,y,z)$ is projected to position $(x_p,y_p)$ on the view plane.Projector (oblique) from $(x,y,z)$ to $(x_p,y_p)$ makes an angle $\alpha$
with the ...
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Best Practice for Tracking Vendor Firmware Rev
My employer has had me create a model of a vendor product (using OnShape) and make a simple drawing with some overall dimensions that we can hand to customers. However, they want to include the ...
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391
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Coiling and bending pipe in 3D model
BACKGROUND: I had previously dealt with 2 pipe coils with oddly bend ends. for the most part I was able to use the coil tool and was able to line up a bunch of 2D sketches to complete the odd end ...
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What is the best way to handle the hole pattern in this drawing
Apparently I am on a roll of more questions than not today.
In the following drawing, there is a pattern (partial?) of 2.7 mm holes. The word in German pointed at them according to google translates ...
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Loft not quite making the cut
I am working in Inventor LT 2021 which means I do not have access to the sheet metal tool. Which would have been great as the example I am working on is sheet metal. The example drawing I am working ...
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Concentric Circles & Section/Breakout Confusion
This is part of my on going saga of drafting question with respect to the V2 drawings I am using for practice while learning inventor.
The following drawing is titled "Partition" (...
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Interpreting drawing annotations
The other day I was looking for example drawings to follow that would be used in a real world context as opposed to basic exercise books and I stumbled across a museum archive of the V2 rocket design. ...
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Interpretation of dimensions
Continuing through my practice examples I came across the following diagram and I have a question on how to interpret the depth of the part.
I have the part drawn up in inventor, but when I went to ...
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Why is locating a feature using directly toleranced dimensions not recommended?
Reading through ASME Y14-5 I noticed a Note in para 2.6 "NOTE: When basic dimensions are used, there is no accumulation of tolerances. A geometric tolerance is required to create the tolerance ...
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Does ASME follow the ANSI standard, the ISO standard, or neither (both work)?
I was looking through AMSE Y14-5 and noticed that they tend to use diameter symbols in their drawings, which is indicative of an ISO standard.
However, I always thought that ASME Y14-5, being American,...
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What's the difference between a dowel pin symbol on a hole, and just a regular hole?
I noticed that sometimes I would see holes labelled like this:
but most of the times, they would be drawn "normally", like this:
Why would someone use a dowel pin symbol if a regular hole ...
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Applying ISO fits to radial bearings
Do you need to take the bearing size tolerance into account when creating the tolerances for the mating hole/shaft when using ISO 286 tolerances?
For example, a 125 mm OD bearing with a desired H7 ...
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How to draw an arc through 2 known points and tangent to a line
I am using AutoCAD and I was trying to figure out how to draw a circular arc through 2 known point and tangent to a line.
When I look at the circle tools I see the following options:
When I look at ...
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Where can I find technical drawings for computer parts?
I want to 3d print a custom computer case, I have the skillset to do so, however, I do not know where to find the technical drawings required. I need drawings for a 280mm Radiator, an ITX Motherboard, ...
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Dimensioning holes through a hollow shaft
I have three types of holes in a hollow shaft that are perpendicular to the shaft. The first type of hole go only through to the centerline. The second type go all the way through (i.e. out the other ...
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