Design and Manufacturing with Solid Works

Design and Manufacturing with Solid Works http://projectlab.engphys.ubc.ca/enph253/labslectures/ May 11, 2012    Measuring and Layout Intro to S...
Author: Alison Henry
1 downloads 0 Views 1MB Size
Design and Manufacturing with Solid Works http://projectlab.engphys.ubc.ca/enph253/labslectures/

May 11, 2012

  

Measuring and Layout Intro to Solid Works Giving Solid Works software to you

Reading Technical Drawings: Quick Intro Good drawings tell you everything: • • • • •

Basic info Looks Size Material Name Number needed

• • • • • • •

Details Tolerances Who drew it Context of the part Symmetries Repetitions Threads ….

Look for: Overall Dimensions, Scale, Symmetries, Units, 3D views such as isometric or perspectiveprojection, find hidden features and cavities, features such as threads or surface finishes,

Technical Drawings • a way to communicate what needs to be done • try to have everything relevant while not overloading the drawing with information • tolerances/ references/ allowances • naming: choose names that make sense • include: scales, materials, features • sometimes, context of the part is helpful to know • metric or imperial dimensions? (Go metric if you can)

Measuring Tools: Electronic Digital Calipers

inside

depth

outside pro: easy switching between metric and imperial system con: not necessarily more precise than analog calipers photo: mcmaster.com

Layout Tools

inside and outside calipers

scribes

dividers

rulers squares leveling tools

Layout Tools

marking, using a divider

Layout “Tools” marking, using a .... “Sharpie”

or a scribe Mechanical pencils are also very good for this!

Scribe vs. “Sharp”-ie

Old way: Make Drawing. Use drawing to operate machines to make part.

New way: Make 3D part using software. Feed into CNC machine that makes it.

Getting started: Setting up your workspace - Choose “ISO” and “mm, gram, second” if it asks you Default menu visible after choosing “new part” - “Command Manager”

Recommended menus: - “sketch” - “features” - “tools” - “reference geometry” - “sheet metal”

To pick your personal menus and set up your workspace, right-click on the empty useless space in your windows-window (E.U.W.W.S.) up on top of the screen that every windows user is endowed with regardless whether they want it or not.

Setting up your workspace - there are more buttons than you think! - drag and drop to make your very personal menus. - activate SW Simulation: “tools”…”add-ins”…and check both “activate” and “start-up” buttons to make sure it always starts • SW needs lots of resources. Free some on your computer by going to “system” ….”advanced”…..”performance”…..”adjust for best performance” • Run “msconfig” and do a selective startup, getting rid of lots of junk your machine might be running in the background. (keep your virus scanner) • Restart often. Windows likes that.

Solids: Extrusions are not all the same - Boss-Extrude? - Sheet Metal? Looks like an extrusion, kind of.

• Sheet metal can be bend, the other can’t • Boss-Extrudes can have lots of copied and patterned features, sheet metal parts will give you error messages Why sheet metal? • Can be saved as “DXF” files (=Drawing Exchange Format) for Omax • Will flatten bends automatically when saved as DXF

Making Parts: - blue lines: bad  - black lines: good  (defined vs. under defined) - use relations and auxiliary lines to define lines and drawing features

When making more parts by using ‘save as copy, beware:

There is a button that you have you check to make sure the part you are making the copy from won’t be replaced in your assembly by the new part that you are making from an old one.

Solids: Extrusions are not all the same - Name parts for what exactly they are - Keep old files to make sure you can revert to older versions if things don’t work When exporting DXF files: - Name DXF files that are destined for waterjet or laser cutting as follows: “ 3x steel 0_7mm leg”

= telling that you want 3 pieces, from steel sheet metal that is 0.7mm thick, and in the context of what you are doing this is a robot’s leg.

It’s also a good idea to know the overall dimensions of your part, and/or to mention that in an email if someone else will cut it for you. Like:

“ 3x steel 0_7mm leg” …..part is 400mm long and 50mm wide

Other good systems to keep track of what you are doing are folders named for years, months, and dates of when things were made. Companies will ‘freeze’ designs at certain times to make sure earlier products can be reliably repaired and maintained.

Assemblies - always assemble things the same way you would in reality. - align bolts concentrically to holes, giving rotational freedom - use advanced alignments and mates to define limits of motion, angular limits, gear ratios and more. - see the tree to the left for information about parts being fully fixed or not - tree can be partially undone by dragging the below line upwards

Don’t put assemblies together and leave parts hang in mid-air. You might think everything fits and works just fine, but in fact it does not.

Simulation……..

We really hope you free’d up some system resources earlier.

Solid Works tutorials can be found here:

Library!