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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.

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In my head these are cut or shear lines between alternating teeth/tabs. Short ones ben up slightly and the long ones bed down slightly. However there is no side view to confirm this. The material is 0.8 mm thick. The title according to google translate is "Locking Plate" in english.

When I leave the lines open like in the drawing I windup with just a solid piece. The extended lines disappear.

enter image description here

Would it be a reasonable assumption to make a 0.1 slice where those lines go in and then partially bend the teeth/tab alternating up and down?

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  • $\begingroup$ According to the draiwng, I would think so, but where did the 3D model come from? $\endgroup$
    – DKNguyen
    Commented Nov 8, 2021 at 22:27
  • $\begingroup$ @DKNguyen I drew the 3D model. demonstrating what I had attempted so far and that leaving the lines open just made for a solid piece. I do not think my 3D model as it stands currently is correct. I just wanted to check my thoughts before proceeding $\endgroup$
    – Forward Ed
    Commented Nov 8, 2021 at 22:37
  • $\begingroup$ they look like cut lines, but as to bending upwards who can say? $\endgroup$
    – Tiger Guy
    Commented Nov 8, 2021 at 22:38
  • $\begingroup$ I suppose one could also twist tabs, but then why have short and long? $\endgroup$
    – Forward Ed
    Commented Nov 8, 2021 at 22:39
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    $\begingroup$ @DKNguyen As I make my way through the drawing set I will see if I spot the assembly drawing and if so I will update this question $\endgroup$
    – Forward Ed
    Commented Nov 8, 2021 at 22:50

1 Answer 1

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As commented, that could be the part as cut in this process step only. In a subsequent operation it could have tabs bent or they might be bent when the part is pressed into an assembly - a one-way operation that would make it difficult to remove the part.

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  • $\begingroup$ I agree they are likely shear lines, and the bending has not yet happened $\endgroup$
    – Jonathan R Swift
    Commented Nov 9, 2021 at 9:50

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