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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Is there a default circular blueprint cut depth?
I have a drawing that has a circular cut:
Nowhere it says how deep should the cut go into the material.
Is there a default way to obtain the depth that I'm not aware of?
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How do I perform a lead of helix cut?
In this old blueprint from 1944, it calls for a lead of helix, 1 turn in .2" on red arrow:
No other info is provided.
This is a top view of the part.
Here's ...
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Missing View and Isometric Projection
i'm having a hard time to project the missing top view and the isometric projection. My professor did not give me any information about what angle it is (like third angle or first angle), so I'm super ...
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Orthographic projection technical drawing
My professor asked me to make the orthographic projection of this object with the third angle rule, but the object has an oblique/slanted surface. Does it require an auxiliary view too?
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Auxiliary View to Isometric Projection (3D)
I'm having a hard time to visualize this Auxiliary View into Isometric Projection or the 3D version, my friend said that it shape like a hinge, but I stil could not visualize it, can anyone help me?
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Is there anything in BS 8888 regarding the scale of a section view?
If a section view isn't sufficient enough to show all details required, can it be at a larger scale than its parent view? Is there anything in BS 8888 regarding recommended scales in section views?
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Find dimension of surface arc in blueprint given instructions
I'm trying to find the dimension for the surface arc as shown here as L:
It doesn't provide the dimension directly, instead it says:
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What does this F symbol means in blueprints?
What does this F (similar to mathematical function symbol) means in blueprints?
Year of blueprint 40s.
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Circularity symbol with datum?
I am trying to interpret a technical drawing that has a datum attached to a circularity GD&T symbol.
This page says that Circularity never has a datum reference. But this is a technical drawing ...
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Missing View From Orthographic Third Angle
so the drawing is missing the right side view, but i'm having a hard time to visualize how it look, especially the 90° part
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What are the positions/diameter of the anti-rotation bumps on this mechanical drawing?
I am designing a front panel for an electronic device with PCB-mounted components on it. I need to provide precise CAD geometry for drill holes, etc. to the third party that will mill / manufacture ...
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Create a mechanism to support a speaker in the upper part of an enclosure
I am working on an electronics enclosure.
There will be two parts, the main enclosure and the lid that gets screwed.
In the upper lid, I want to have a support for a circular mini speaker.
The speaker ...
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Orthographic Projection to Isometric Projection
How to construct this orthographic projection into an isometric projection? I really don't get the picture on how this orthographic projection turn into isometric projection. There's also some missing ...
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Find height of cone point in blueprint
In this blueprint I was not able to find where the height of the point of the cone angle should be.
Here's the original blueprints:
http://library.centerofthewest.org/digital/collection/WRAC/id/398/...
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Drafting - Specifying multiple hole quantities
First post in this stack but curious on if there is a 'right' answer (within Australian or ISO standard) for how to quantify numerous holes of same size/properties on a drawing. In the past I've seen (...
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Getting a 3d object from connecting two parallel surfaces and then viewing the new side surface
I have two slightly different surfaces (circle with a part chopped off and a similar circle but with half of an ellipse in the chopped off part) and I want to connect them into a 3d object and then ...
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Trying to draw rib tangent to a circle AutoCad 3d modeling
I'm trying to draw a rib tangent to a circle but If some one can link a video or a tutorial on how to do that I'd be really thankful here's the drawing in 2d (the rib is highlighted with the red ...
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Tolerances in the manufacture of mechanical parts (plastic)
It is necessary to make an adapter ring for connecting the smartphone to the microscope eyepiece (turn from ABS on a lathe, or 3D printing). Microscope eyepiece diameter is 33mm.
What should be the ...
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Hydraulic circuit part question [Blanking Cartridge]
There is a part in this circuit called a "Blanking Cartridge". Its symbol looks identical to a standard capacitor in electrics. I have no idea what this part does. It is connected in ...
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Locating an angular surface using GD&T
I'm having doubts about how to dimension an angular surface using proper GD&T techniques. I want to achieve the 6 mm feature of size (FOS) at an angle of 89 deg. to Datum B to within an angularity ...
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How is the edge piece made?
Apparently the "CUP HOLDER" has a long history. The 1944 Spitfire cupholder above has me a tad confused about the manufacturing process. I am looking at the encased wired that is running ...
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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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Model partial length top side fillet
Originally I was wondering how topside edges/outside fillets were actually machined so I could understand what I am seeing in a drawing and how to properly model it.
I stumbled on this question before ...
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Mechanical Drawing Ventilation Abbreviations - Canada
I'm trying to figure out what the abbreviations are for exhaust fans in mechanical drawings. I've posted an example below, which is shown in the legend as Supply Air (SA), along with its size and ...
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BA Hole Designation
I a previous question I included a drawing for a strut. In this strut drawing it designates a 2 BA Hole in the bottom of the strut. I have seen this call out for many other parts that are part of ...
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surface roughness define how rough surface has to atleast be
Surface roughness standards generally say that the thing you specify is the maximum your willing to accept. But manufacturer could make a finer job if they wished.
I however have a situation where the ...
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How would this piece be manufactured
I've started tinkering with drawing parts from the blueprints for a Spitfire Mk V. I am looking at this drawing for a support strut and I am wondering how one might actually manufacture it. In other ...
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Can I omit the scale information in the technical drawing of a mildly complex mechanical part if I provide all of the necessary dimensions clearly?
and thanks in advance for taking the time to help me.
TL;DR: I work for a company where I need to make technical drawings—mostly using SolidWorks—of some mechanical components. Do I have to include ...
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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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What is causing the elliptical shape around the marked hole?
Background
So I am looking at this piece titled "Ring" and I cant figure out what I am missing in the drawing that cause the elliptical shape at the two hole entrances on the right side of ...
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What does this line with cross means in the blueprint?
In this blueprint, there's the line with a cross with diameter of .115 at the far right side.
What does this line means?
Does it means that the section with length ...
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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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Autocad Change Properties for All Object
Does anyone know how to change the Vertex X and Vertex Y value for all of the dots? Because some of the red dots has a different vertex X and Y value which also causes the shape to be slightly ...
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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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What is the relation between metric thread nut hexagon diameter and the major diameter
If we a M12 bolt what will the relation between the major diameter and the hexagon diameter be?
If we calculate it geometrically it should be $E(Hexagon\space diameter)=\sqrt{3}d(major \space diameter)...
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How to get angle of isometric drawing
My sincerest apology if this question does not fit the platform, I need urgent help, which is why am posting here for the first time.
I am very new to Isometric drawing. I am given one sample and ...
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What is the maximum width of this part?
I'm trying to create a PCB footprint for this part, but I'm not familiar enough with dimensioning to fully understand the diagram.
Usually dimensions like D and E are specified as minimum and maximum ...
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How to best set GD&T datums for two oddly shaped parts?
I am very new to GD&T and currently working one of my first drawings for two parts (see simplified drawing below). For accurate alignment during assembly each of the parts has two locating ...
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Find profile view when having frontal and top views
I need to find profile view of an drawing when I have frontal and top views.
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How to interpret general tolerances (e.g., ISO 2768)
I am quite new to mechanical engineering, but currently working on a project which I eventually want to sent to a CNC service for machining. Many services I found can manufacture to, e.g., ISO 2768-m ...
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Rocket Nose Cone Design ,Ogives,technical drawings are not understood
I'm trying to draw a rocket nose cone. Notice the red marked at the bottom left of technical drawing. I couldn't figure out what the diameters 26.870 AND 59.732 mean. I drew endless lines vertically ...
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Fin airfoil holder design and technical drawings not understood
I am trying to draw a fin for my final year project, but I could not fully understand the technical drawing explanations that I marked with red markings.
especially R1.281 DEFINES TANGENCY OF R1.312 ...
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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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What is the unidentified shape in the drawing
Woot! HTTP://www.DigiPeer.de is back up and running so I am back to practicing part drawing in Inventor LT 2021. I am looking at the following drawing titled "Pin" (according to some ...
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In which file format are technical drawings saved/stored? How can the data be exchanged between other software?
I just want to know how the information contained in technical drawings is stored? Is there a kind of major representation/file format such as the boundary representation? Is all the information ...
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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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Need help with Solidworks
Would I be allowed to ask which Solidworks feature I should use to make the recessed bit (circled in red) of the thing in the diagram below? Thanks.
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Should I use the rounded values given on technical drawings or work at the highest reasonable resolution?
In the image, the table of dimensions only gives a resolution of 1mm; in the actual creation of such a sign, would these approximate values be used or their true values (within reason)?
For example, R ...
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Projecting side surface from a 3D object made by lofting in autocad into 2D
i have made a 3d object by lofting two circles in autocad:
Now I want to project the newly made side surface (without the two original circles) into 2D so I can make it with sheet metal. By ...
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