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Making normal cuts in sheet metal

From: Sheet Metal Design with SolidWorks

Video: Making normal cuts in sheet metal

There are 2 methods to make sheet metal parts. Option 1 is to add in all the features, in a flat pattern and then fold up the part. Option 2 would be to add secondary operations to cut holes or cut across a part. Secondary operations add significant cost and are generally not as desirable. If you want to make a cut into sheet metal that will flatten correctly, you need to choose the normal cut option. Let's take a look at some examples. In this part here, we've already got a couple bends in this part and it's folded up. If I click on this top surface here, start a sketch and come over here to the line command and click on space bar so I'm looking normal to it.

Making normal cuts in sheet metal

There are 2 methods to make sheet metal parts. Option 1 is to add in all the features, in a flat pattern and then fold up the part. Option 2 would be to add secondary operations to cut holes or cut across a part. Secondary operations add significant cost and are generally not as desirable. If you want to make a cut into sheet metal that will flatten correctly, you need to choose the normal cut option. Let's take a look at some examples. In this part here, we've already got a couple bends in this part and it's folded up. If I click on this top surface here, start a sketch and come over here to the line command and click on space bar so I'm looking normal to it.

And we go ahead and draw a line from this point here to this edge here and down across this edge and back out. Then I'm going to go ahead and add a dimension from those 2 lines, of 30 degrees. Click OK. And I've got a fully defined sketch. Now what I want to do is, I want to cut that across my part here. So I'm going to go up to Features and go to Extruded Cut, and I want to say Through All. And it cuts across the part. Now if I leave normal cut off, what it does when I click on the feature, it cuts across the part and it looks really nice, however in reality, in sheet metal if it starts with a flat pattern we can't make a cut like this. It actually causes errors for us, so if I click on the flat pattern I'll show you what I'm talking about.

Unsupress, and actually you see that it actually tries to do this little angle cut here because it's not in a flat state so you have to actually machine that in there, or you have to cut this later on. On a saw. So if I suppress that I can come back go back to the feature and click on normal cut. And that little option there will change it, so that it actually dips in around those corners and actually deforms that material around the corner. Now from the side it looks exactly the same. But, as I look at it at an angle, I can see that both of the corners, kind of flex around where the bend region is. Normal cuts are really what will happen automatically, when you cut a part in its flat state, and then form it up.

At the end of the day, normal cuts are the way to go, because, there's no extra tooling, and the parts will be clean and easy to form.

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This video is part of

Image for Sheet Metal Design with SolidWorks
Sheet Metal Design with SolidWorks

53 video lessons · 3023 viewers

Gabriel Corbett
Author

 
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  1. 2m 9s
    1. Welcome
      1m 13s
    2. Using the exercise files
      56s
  2. 10m 0s
    1. Looking at sheet metal tools
      1m 35s
    2. Using and customizing the Ribbon
      2m 42s
    3. Understanding sheet metal
      5m 43s
  3. 40m 24s
    1. Creating a base feature
      5m 37s
    2. Looking at the Flange tool
      5m 12s
    3. Creating tabs
      5m 3s
    4. Making an edge flange
      5m 33s
    5. Using the Edit Flange Profile tool
      3m 12s
    6. Using the miter flange
      4m 21s
    7. Making a swept flange
      2m 59s
    8. Using the Jog feature
      5m 20s
    9. Making hems
      3m 7s
  4. 16m 6s
    1. Unfolding and folding parts
      2m 58s
    2. Making normal cuts in sheet metal
      2m 8s
    3. Adding cuts across bends
      4m 0s
    4. Making closed corners
      3m 17s
    5. Adding welded corners
      2m 18s
    6. Making a cross break
      1m 25s
  5. 20m 3s
    1. Using the Convert to Sheet Metal command
      5m 6s
    2. Adding sketched bends
      2m 31s
    3. Importing geometry
      5m 7s
    4. Looking at the rip feature
      3m 29s
    5. Creating a lofted bend
      3m 50s
  6. 17m 40s
    1. Building a chassis
      6m 9s
    2. Using the pattern tools
      3m 22s
    3. Using mirror symmetry
      2m 1s
    4. Using the split feature
      3m 7s
    5. Exporting individual parts
      3m 1s
  7. 15m 41s
    1. Using forming tools
      2m 56s
    2. Modifying a forming tool
      1m 44s
    3. Creating a custom forming tool
      3m 35s
    4. Forming across a bend
      7m 26s
  8. 18m 55s
    1. Basic assembly techniques
      5m 1s
    2. Adding cuts in context
      4m 57s
    3. Creating parts in the assembly
      5m 46s
    4. Using patterns and mirrors
      3m 11s
  9. 19m 28s
    1. Using ordinate dimensions
      4m 13s
    2. Looking at sheet options
      3m 24s
    3. Creating flat patterns
      2m 56s
    4. Saving to DXF or DWG
      3m 29s
    5. Automation with SolidWorks Task Scheduler
      2m 44s
    6. Prepping for manufacturing
      2m 42s
  10. 1m 26s
    1. Next steps
      1m 26s
  11. 14m 12s
    1. Laser cutting
      1m 53s
    2. Shear
      46s
    3. Break forming
      3m 39s
    4. Turret punch press
      3m 14s
    5. Welding
      1m 2s
    6. Deburring
      1m 48s
    7. Hardware
      1m 8s
    8. Computer numerical control (CNC)
      42s

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