Questions tagged [technical-drawing]
Technical drawing, drafting or drawing, is the act and discipline of composing drawings that visually communicate how something functions or is constructed.
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Steel beam size
I'm a customer not an engineer!
I had 2 sets of drawings for a project to put in bi fold doors.
The original drawing had a beam of 230mm and then the engineer sent a revision with a beam 260mm.
The ...
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How do I interpret a fillet indication on a technical drawing
I'm reproducing in Fusion 360 an object based on a technical drawing, but I have trouble understanding what this means:
When I read the Wikipedia article on Engineering drawing, abbreviations and ...
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Meaning of a symbol for a hole specification in a drawing
A very simple question, so sorry for this, but I have searched many online docs and cannot find a simple answer. I have a hole specification of 3.4 + 0.13 (picture attached).
What does the +0.13 mean?
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Drafting techniques for various views [closed]
I was looking at this previous question and I got bored and started drawing it up just for something to do.
The image in the question shows a nice front view and an elevation/section as shown below.
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Convert .dxf file to .svg
I'm an software dev and my job is to convert a .dxf file into a .svg file
My code actually works, but there are some issues with the dimensions or something similar. Unfortunately, i have no ...
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Coplanarity Profile Callout Confusion
From Krulikowski (1997), the callout for several coplanar surfaces using the Profile symbol is done by using two surfaces to establish datum plane A-B and then tolerancing the remaining coplanar ...
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Do drawing dimensions have to start from datum?
When specifying the depth of a cut, should the dimension start from the datum surface or from the surface where the cut will be made? In the example below, a cut of 5mm is made from the surface ...
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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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Autodesk Inventor Make Holes on Different Edges Based on One Line
I need to invent a construction based on standard square tubes with holes placed in certain distance from each other and from ends of the tubes:
I also need to imagine the tube with holes as a ...
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In freecad, how do you copy a sketch geometry from one plane to another?
I'm using FreeCAD, and I would like to copy all the geometry in a 2D sketch to another plane. So you have a 2D drawing on XY, and you want the same geometry to be copied to XZ. I can't seem to find an ...
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What is an acceptable tolerance for a non-engineering dimension
I have part that I'm dimensioning and setting tolerances on. Some of the dimensions/features have engineering requirements (e.g. press fit) and I have the tolerances set correctly (e.g. H7).
But I ...
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Please check the front,top and left hand side view of my figure
Below is the link what I have tried
Please check if it is correct or not?
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buying a mounted bearing determining radial vs axial load it can bear
Can anyone tell if these bearings load ratings are for a radial load or an axial load ?
Bearing designed for an axial load is (sometimes?) called a "thrust bearing".
Based on its mounting, I guess ...
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What does "h2" mean on technical drawing?
I have a technical drawing, but I can't understand the "h2". The "h2" points to a hole, and I don't understand it. Can you please give me an answer? Thanks!
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How to model Motor Windings in Solidworks?
I want to model a DC motor in order to eventually do some simulations (temperature/cooling related) and I'm wondering what is the best way to model the motor windings?
I've seen a few video's on how ...
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Differentiating between Two Orthographic Projections
I came across the infamous control handle assembly in two different books, referencing the views differently. One of the had it like the following photo
The other book labelled the side view in this ...
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Autocad start drawing away from the Z=0 (non-coplanar)
I'm having an issue when I draw some elements. They are been drawn away from the Z=0, is causing to be non-coplanar with other elements. So, I cannot make fillets or can find crossing points. I don't ...
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Why is the left-side view called like that?
The top view looks at the top of the objet from the top of the object, the front view looks at the front of the objet from the front of the object. All seems logical.
So why does the left-side view ...
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How do split drawings from this without losing their dimension Autocad
I have a dxf file converted to dwg (unit: millimeters). There are 6 different drawings in the same file, How do I split those to different sheet. I wanted to take their consumption, as they are going ...
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Is is possible to form a 3D object from the front, side, top views with a triangle, a square and a circle respectively?
A friend of mine asked me this question, but I don't know if it is possible or not. If it is possible, please show me how to construct it. If it is not possible, please prove it. Thanks.
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Strange CAD excercises
a long time back at school, I had a difficult excercise which was named X, Y and Z bodies.
They were drawings where both the front view and the top view were fully given. We had to find the view from ...
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Projection of a given view to produce another views
First as a beginner in Technical drawing, I'm required to project two other views from the given views. In the first image the original object was not given and I'm required to produce the third view. ...
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What does "do not scale drawing" in a drawing sheet mean?
I opened a new sheet in Solidworks drawing, in the title block, there was a field written "Do not scale drawing". What does that mean?
There is a scale already being chosen over there. It was just a ...
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P&ID Symbol Identification Question
Does anyone know what these three symbols are? I am working to identify them but they do not seem to appear in the site: https://www.edrawsoft.com/pid-legend.php
Does anyone know a better reference ...
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Engineering Drawing-Projection of intersection curve of two standing cones
I have this projection of two intersecting cones, and I am asked to draw the intersection curve of the two cones on the projection. What is the right way to do it?
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Drawing in orthograhphic
I need to draw this in orthograhpic views. I'm a bit confused about the weight of lines I should use to draw. Like ,for the pat (I pointed the arrow at) you can see it's sticking out a bit, would I ...
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Technical Drawing: Labelling a component that's not part of my design but integral to my system
I am creating a technical drawing of a system I created. Let's call my system, system X. System X is a mounting mechanism for already invented system Y. System Y is customizable, however, system X is ...
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Help interpreting dimensions from this drawing
Why there are different dimensions for the same measurements on this drawing?
For example 0.127mils and 0.097 mils pin to pin. Or highlighted 405 and 385 mils.
I can't find anything on the datasheet ...
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How to calculate the dimensions of an ellipse in a multi-view projection
The following image is an example that will help to demonstrate what i am saying and this below is a blender image version of an object with a slant surface at the top.
to draw the multi view ...
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What does P0.35 stand for in a Tech drawing for a Bolt
Got a Tech Drawing today with measurements and all that. I understand everything except for one part where they've specified a bolt with M4 P=0.35. The M part I get but what does the P specify?
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What standards apply when specifying coating/painting in a mechanical part drawing?
I have produced a part drawing which calls up a machined mark on a flat surface, and the supplier has manufactured the part with this surface painted. I haven't added a note to the drawing that says ...
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How to communicate to keep original dimensions of a part in a technical drawing?
Example: let's say that I have a rectangular part that I would like machined. I'd like to cut it to change the length, but the width and thickness are fine as is. The width and thickness are not nice ...
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What do the short parallel lines mean in a symmetrical value?
I was wondering if the short parallel lines at the ends mean anything?
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Is the diameter before knurling assumed to be the same as diameter after knurling?
If the diameter before knurling is 80. Is the knurled diameter also 80?
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How are NPT hole features defined?
I'll be the first to admit that I have always been somewhat confused by best-practice dimensioning standards surrounding pipe threads. While there is a decent amount of literature available online, (...
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Technical Drawing Content
When producing a set of engineering drawings for products we tend to specify the materials used for the part in the notes. For example if it's a moulded part we'd specify PA6 GF20 and then the ...
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Find correct dimensions from mechanical drawing
I'm designing an electrical component into a CAD from the manufacturer drawing. The version I'm interested to is the code 106166-1 (6 positions, last entry in the table).
I'm not sure to understand ...
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Can you help interpret hand-drawn technical drawing?
I can't seem to figure out the proper left view for the following image, and the full and half sectional cutout for the left and front projection.
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Understanding hole specifications
I am trying to interpret the hole specifications in the attached diagram. What does each component mean? I understand what 'Thru All' means, does 4x mean 4 holes? What is the diameter of the hole? is ...
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What does C20019 IN PAIRS AT 900 MAX CTS WITH 2 ROWS OF BRIDGING AT 1/3 POINTS mean in a technical drawing?
Specifically, does in pairs mean that there are 2 C20019 members per indicated line on a technical drawing?
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2PL / 3PL annotation on arc in technical drawing
I found a technical drawing of a popular guitar shape online and I'm having trouble to understand a certain annotation on some arcs in the drawing. It basically says stuff like "0.43R 2PL" or "3PL" (...
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Go-to resource for open hardware engineering resources? [closed]
If you would search for open source software projects, you'd probably run into GitHub and BitBucket.
Is there a similar site/community around open hardware to share and version CAD files, curcuits, ...
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Rule of Tens/Ten to 1 Rule in Measurement and Inspection
I'm trying to clarify my understanding about the requirements [read: best practices] for measurement resolution and measurement confidence.
The "Rule of 10s" is a commonly tossed around guideline ...
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Document Feathering Tolerance on Drawing
I am recreating an engineering drawing package from old quotes for a large assembly. In the quote they say "All length edges not to exceed 1/32" deep feathering". For some context this is for a bunch ...
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AutoCAD 2019: How do I Find the Perfect Angles to Match Line Endpoints
I'm trying to match up two lines on a drawing I am doing, without changing the length of either line. There is a perfect set of angles to do so- I just don't know what it each. Is there a built in ...
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What is the minor diameter of a thread in terms of its nominal diameter and pitch?
I'm trying to find the formula for calculating the tensile stress area of a bolt. According to page 1528 of The Machinery's Handbook (29th Ed.), that formula is given as
$$
A_S=\frac{\pi}{4}\left(\...
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How to number section and detail view for a same drawing
For a given 2D print, is it recommended to number section views and details views with the same alphabetical list, i.e. Section views A,B and C followed by detail views D, E and F,
or go with ...
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Please Help me Read this Engineering Drawing
I am trying to CAD up a drawing for a plate for this motor to mount to. I figured it would be easy since they provided an mechanical drawing, but I have never seen one like this before. Can you please ...
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Solidworks - Projected Curve is incomplete
-- This issue might be due to a bug in SolidWorks 2014 SP2 --
I'm trying to route a water hose from one location to another without passing through a keepout area (the red box shown).
I am simply ...
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In the image below,only 4 quadrants are mentioned but my intuition says there should be 8, please clarify me?
I am learning engineering drawing and confused on this.
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