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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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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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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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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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 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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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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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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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 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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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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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 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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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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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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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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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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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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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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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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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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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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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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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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what does four 8-32 holes on a 50mm bolt circle mean in this diagram? This drawing is for an ampflow E30-400-24 dc motor
the link to the website is here:https://www.ampflow.com/motors/highPerformance/threeInch/
that drawing I think is the front of the motor, the shaft is in the center, the 4 holes around it are ...
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How are 2D views from a 3D CAD Model stored in STEP-File with Boundary Representation generate for engineers to define details? And why?
I am new in this topic and need some help. There are 3D CAD models (stored as STEP Files with the boundary representation) and some engineers need 2D views of these models for further processing. With ...
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Airfoil engineering drawing
In an engineering drawing how would you dimension the cross-section of an aircraft's airfoil? Obviously, you would have to include the chord length, leading and trailing edge radius, and wingspan. But ...
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Are these section views correct Autodesk inventor
So I used AutoDesk inventor and created this machine part for the purpose of exercise , But it is preferred to not to hatch ribs in my course so is there a way to make it look like image (5 and 6) ?
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Autodesk inventor create rib feature failed
It's been kind of painful to create a rib I'm new to inventor while I was trying to create a rib symmetric about the YZ Plane this error keeps popping up
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How to draw hidden rib in Autodesk Inventor
I drew the outer hollowed body and the cylinder on 2 separate parts but I can't figure out how to draw this rib so that it is passes through the centre of the cylinder, a video of a similar example ...
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Should a stiffener be hatched
In my course it's preferred not to hatch ribs and webs so should I consider a stiffener like them and not hatch it or is it different and why ?
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How to visualize isometric parallel projection?
I read the definition of Isometric Projection from this pdf that Projection plane intersects each
coordinate axis in which the object is defined (principal axes)
at the same distant from the origin.
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What are these hidden lines tangent to the circle?
I don't understand what the hidden lines are nor the fillets tangent to the center line of the circles if someone can help with the 3d isometric that would help a lot.
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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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What software is used to create the graphics for stuctural analysis textbooks?
I want to create some 2D and 3D drawings of simple trusses and frames. and I was wondering, what is the software used to create the graphics seen in structural analysis textbooks (example: R.C ...
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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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Is there sufficient information to complete the bottom end?
BACKGROUND
Fresh of the heels of figuring out my "kinky" issues in this question I thought I was fully prepared to deal with the following drawing titled COILED PIPE 2. The drawing seemed ...
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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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Part drawing information vs Assembly drawing
With my progress through various drawings, I finally came across an assembly drawing with parts I have actually drawn up that caught my eye. The first part drawing as shown below is a simple sheet ...
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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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Are these cut lines?
In the following drawing I am looking at the lined that come in on either side of the teeth/tabs that are spaced 9 mm apart and extend 6 mm into the material.
In my head these are cut or shear lines ...
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