Assembly diagrams – how are they done?

Advert

Assembly diagrams – how are they done?

Home Forums CAD – Technical drawing & design Assembly diagrams – how are they done?

Viewing 22 posts - 1 through 22 (of 22 total)
  • Author
    Posts
  • #657822
    Robin Graham
    Participant
      @robingraham42208

      I'd like to make a picture of something I've made along the lines of the assembly diagrams we see in machine tool manuals. For example, a lathe apron:

      apron.jpg

      My thing is much simpler but my question is: how are these diagrams produced? The above looks like pure draughtmanship to me. But maybe there are computationally assisted ways for the artistically challenged.

      Robin.

      Advert
      #21435
      Robin Graham
      Participant
        @robingraham42208
        #657823
        Ady1
        Participant
          @ady1

          Alibre calls it BOM – Bill of materials

          The more advanced versions have it

          #657826
          Michael Gilligan
          Participant
            @michaelgilligan61133
            Posted by Robin Graham on 24/08/2023 23:43:58:

            .

            […]

            My thing is much simpler but my question is: how are these diagrams produced? The above looks like pure draughtmanship to me. But maybe there are computationally assisted ways for the artistically challenged.

            Robin.

            .

            Way back in the mid 1980s I did some, a little simpler than that one, using Autocad 2.5 [or was it 2.6 ?] for DOS

            … all done on the isometric grid, it was slow but quite satisfying work.

            MichaelG.

            #657837
            JasonB
            Moderator
              @jasonb

              Many CAD packages allow you to "expload" an assembly which moves the components apart in a similar way. Alibre pro & Expert actually call it Expload and you can also get a BOM (Bill of Materials) which would be a list of all the parts in the exploaded view.

              Alternatively you could just assemble them with suitable offsets

              Pencil and paper way is to draw each part a set distance from the others, the skill is in the layout.

              #657840
              Gary Wooding
              Participant
                @garywooding25363

                Fusion 360 has such a facility, it's called an Exploded View, which is part of the Animation facility.

                #657847
                David Jupp
                Participant
                  @davidjupp51506

                  Just to expand a little on what has already been mentioned. In 3D CAD, the Exploded View is created and edited in the 3D Assembly workspace. Explosion directions are typically set by the assembly constraints that hold parts together. There may well be an 'Auto-Explode' option, the resulting view can be refined/adjusted manually.

                  Once the Exploded View is to your liking, it can be added into a 2D drawing. Callout numbers can be added based upon a Bill of Materials (generated automatically from the Assembly).

                  Some systems allow the explosion to be split into steps, and exported to an animated PDF 'manual' – think of a 'workshop manual' with animated 3D colour images showing assembly or dis-assembly steps. Instructions and animated images are stepped through under control of whoever is viewing the PDF.

                  #657849
                  Mick B1
                  Participant
                    @mickb1

                    Bills Of Materials predate CAD by a decade or so. They were used from the mid-1970s as the structural elements of Materials Requirements Planning (MRP) systems, later Manufacturing Resource Planning (MRP II) systems. These latter would include Bills Of Resource with routing details for capacity planning.

                    Full explsions would be represented by Indented Bills, opening up each in-house-made component or subassembly progressively until the lowest-level bought-in raw materials or piece-parts were reached.

                    In 35 years working on these systems, I never saw a comprehensively good one – though I was involved in some useful improvements to a couple of 'em.

                    smiley

                    #657867
                    Circlip
                    Participant
                      @circlip

                      We ad it tough, isometric drawing templates and cut and paste (Scissors and glue), oh how the compuwter has made everyone an instant draughty.

                      Regards Ian.

                      #657894
                      Robert Atkinson 2
                      Participant
                        @robertatkinson2

                        You thought twice before putting Rotring to film. It's not a click of the undo button to change once the ink is down.

                        #657896
                        HOWARDT
                        Participant
                          @howardt

                          Place I worked at in the eighties had tracers specifically employed to create exploded views for technical manuals as well as images for advertising. They were the first to be made redundant when the decline took hold, then draughtsmen were expected to do something similar. Eventually 3D cad systems enabled it to be almost automatic, but it still takes some thought and skill to get the right look and pairing of parts. While the cad systems I worked with would separate parts you had to move them manually to the side as needed. To me if you can read a drawing an exploded view is unnecessary it is most useful for the spare part suppliers who you wouldn’t expect to be able to read a drawing.

                          #657912
                          Michael Gilligan
                          Participant
                            @michaelgilligan61133

                            Those here who use an iPad might be impressed by this free App from Engino

                            **LINK**

                            https://apps.apple.com/gb/app/engino-kidcad-3d-viewer/id962175208

                            They produce educational construction kits [ snap-together plastic mostly ], and that App provides step-by step assembly instructions animated in 3D

                            MichaelG.

                            #658657
                            Ady1
                            Participant
                              @ady1

                              I had a squirrel with Alibre Atom and it's a bit fiddly but you can use the basic drawing function for a viewing angle, the notes bit for numbering and lines, then save as a PDF

                              Then use a PDF editor to put in the key list

                              alibre atom bom1.jpg

                              #658743
                              Gary Wooding
                              Participant
                                @garywooding25363

                                ***THIS*** video shows how simple it is to create an exploded, annotated, view in Fusion 360. Even the free version can do it.

                                #658794
                                Robin Graham
                                Participant
                                  @robingraham42208

                                  Thanks for replies and apologies for not acknowledging sooner – I got a bit sidetracked.

                                  I should have said that I have only Linux machines. I was enthused by the video Gary Wooding linked to and went so far as to find a series of intelligible Fusion tutorial videos only to discover that Fusion isn't available for Unix. D'oh! Same for Alibre Atom and the majority of 3D CAD stuff out there it seems.

                                  I did see a comment on a 'best 10 CAD programs for Linux' article claiming that Fusion can be used under WINE but from my experiences with WINE I doubt it.

                                  I have FreeCAD but don't get on with it.

                                  I'll probably end up doing it by hand or not at all.

                                  My Rotrings dried up years ago – as a schoolboy I would submit homework written with a Rotring at perhaps 3pt just to annoy the 'masters'. They couldn't do me for it, nothing in the rules! Nowadays I like Pigma Micron fineliners – lovely pens.

                                  Robin.

                                  #658809
                                  Gary Wooding
                                  Participant
                                    @garywooding25363
                                    Posted by Robin Graham on 01/09/2023 22:25:40:

                                    I did see a comment on a 'best 10 CAD programs for Linux' article claiming that Fusion can be used under WINE but from my experiences with WINE I doubt it.

                                    Why not try it? Fusion is free to download and try. If you decide that you like it, the restrictions in the free hobbyist version are unlikely to cause you problems.

                                    #658812
                                    SillyOldDuffer
                                    Moderator
                                      @sillyoldduffer

                                      Posted by Robin Graham on 01/09/2023 22:25:40:.

                                      I did see a comment on a 'best 10 CAD programs for Linux' article claiming that Fusion can be used under WINE but from my experiences with WINE I doubt it.

                                      I have FreeCAD but don't get on with it.

                                      Though I love it dearly FreeCAD doesn't have the features needed for exploded diagrams yet. Not recommended for this purpose.

                                      Fusion running under Wine looks good though. This project is actively supporting it. Lots of ifs and buts though.

                                      The main reason I still have Windows is to run CAD. Like it or loath it, commercial software is almost always written for Windows, then Apple, and just maybe Linux as an afterthought. It's easier to install on Windows and more likely to work.

                                      Wine is good provided the Windows application is a little old fashioned, but not if the code pulls tricks or uses new features.

                                      Dave

                                      #658825
                                      Ady1
                                      Participant
                                        @ady1

                                        I only use old Windows stuff, and ONLY the Pro versions

                                        Win7 64bit and 8.1 64 bit run most stuff fine and the "update" process can be disabled

                                        Never used an antivirus either, in 20+ years

                                        You can download the software anywhere, the bit you must get a hold of is the key

                                        Nowadays I would just get an old laptop with it preloaded from the bay etc

                                        Edited By Ady1 on 02/09/2023 11:22:54

                                        #658888
                                        Robin Graham
                                        Participant
                                          @robingraham42208

                                          Thanks for further replies.

                                          Posted by SillyOldDuffer on 02/09/2023 09:09:53:

                                          Fusion running under Wine looks good though. This project is actively supporting it. Lots of ifs and buts though.

                                          The main reason I still have Windows is to run CAD. Like it or loath it, commercial software is almost always written for Windows, then Apple, and just maybe Linux as an afterthought. It's easier to install on Windows and more likely to work.

                                          Wine is good provided the Windows application is a little old fashioned, but not if the code pulls tricks or uses new features.

                                          Dave

                                          I had a look at project on GitHub and it seems that although possible it's not trivial to get Fusion working under Wine. Lots of ifs and buts indeed!

                                          I can (astonishingly) get a refurbished second hand Win 10 machine for £68. 4-core i5, 3.1GHz, 8GB RAM which seems to fulfil the system requirements for Fusion.

                                          I've struggled with CAD for years (on and off, mostly off) and always given up – it's easier to draw by hand. I lit on these tutorials for Fusion and they seem to make sense to me. I don't know if it's the logic of the program itself or the way the guy explains it, but I have new hope.

                                          Robin.

                                          #658915
                                          Pete White
                                          Participant
                                            @petewhite15172
                                            Posted by Robin Graham on 01/09/2023 22:25:40:

                                            I should have said that I have only Linux machines.

                                            I did see a comment on a 'best 10 CAD programs for Linux' article claiming that Fusion can be used under WINE but from my experiences with WINE I doubt it.

                                            I have FreeCAD but don't get on with it.

                                            Robin.

                                             

                                            I have been there smiley.

                                            Have you tried Onshape? Free for us if non profit, web based but not a problem for me, works quick on my simple efforts, not sure about complex ones. Does it for me

                                            Just looked it has an explode feature?

                                            Pete

                                            Edited By Pete White on 03/09/2023 12:17:33

                                            #658965
                                            Robin Graham
                                            Participant
                                              @robingraham42208
                                              Posted by Pete White on 03/09/2023 12:15:10:

                                              Posted by Robin Graham on 01/09/2023 22:25:40:

                                              I should have said that I have only Linux machines.

                                              I did see a comment on a 'best 10 CAD programs for Linux' article claiming that Fusion can be used under WINE but from my experiences with WINE I doubt it.

                                              I have FreeCAD but don't get on with it.

                                              Robin.

                                              I have been there smiley.

                                              Have you tried Onshape? Free for us if non profit, web based but not a problem for me, works quick on my simple efforts, not sure about complex ones. Does it for me

                                              Just looked it has an explode feature?

                                              Pete

                                              Edited By Pete White on 03/09/2023 12:17:33

                                              Thanks Pete. I've signed up and have started working through their tutorials. Could be ideal!

                                              Robin.

                                              #659809
                                              Nigel Graham 2
                                              Participant
                                                @nigelgraham2

                                                Just to clarify the term:

                                                Its is an "Exploded View" [or "~ Diagram"], sometimes "Assembly Drawing" (not to be confused with "General Assembly" and always has been, irrespective of draughting method.

                                                It's not specific to any one make of CAD, nor indeed to CAD generally, though individual makes might have their own versions for the tool name.

                                              Viewing 22 posts - 1 through 22 (of 22 total)
                                              • Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

                                              Advert

                                              Latest Replies

                                              Viewing 25 topics - 1 through 25 (of 25 total)
                                              Viewing 25 topics - 1 through 25 (of 25 total)

                                              View full reply list.

                                              Advert

                                              Newsletter Sign-up