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Frame Lock Template

Discussion in 'Design' started by Chris Roy, Feb 3, 2016.

  1. Chris Roy

    Chris Roy Active Member

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    Was messing around in Draftsight and drew this up. Anyone here ever make a frame lock? Any feedback is welcome.
    [​IMG]
     
  2. John Noon

    John Noon Well-Known Member

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    Set your background to black so the colours stand out a little more and there is less strain on your eyes when drawing.
    For the knife just wondering how it locks
     
  3. Chris Roy

    Chris Roy Active Member

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    When you draw in draftsight it has a black background and changes to white when you export. Might be a way to keep it black but I just started messing with the program not that long ago. As for locking the red line is the lock bar cut out which locks the blade open. I didn't put the detent in as I'd probably have to be tweaked once opened and closed a few times to get the exact spot.
     
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  4. Mythtaken

    Mythtaken Staff Member CKM Staff

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    The design looks good. I would extend the flat on the blade tang down so it covers the whole area of the lock, and I would lengthen the top of the blade tang so it was just longer than the bottom for an extra secure lock.

    I didn't notice any markings for a detent.(Oops. Never mind)
     
  5. Chris Roy

    Chris Roy Active Member

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    ya ill mess around with it. I'm sure there will be alot of prototypes lol thanks myth
     
  6. tamil

    tamil New Member

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    hello everyone!!! I would like to share some things with you guys I like to design knives and in my firm, after each design, I have to do a small power point on that design, I was searching for PPT templates for that power point related to knife stuff and finally I found one which is very relevant one I thought you guys might need it so check it out https://www.templatemonster.com/free-powerpoint-templates/
     
  7. ToddR

    ToddR Putterer, Tinkerer, Waster of Time Staff Member

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    Sorry for the noob question but, is the lock part of the but piece? (is the red piece part of one of the yellow pieces?) And do you just put a bend in it to give it spring? Just curious.

    If you havent' guessed, I've not done a locking knife yet. I've done a couple of friction folders but I don't know that I'd trust them for heavy work. I would trust this more. I have to admit, I have a phobia about folding knives. Too many cheap folders maybe, I dunno. I've cut myself a few times and twice really badly. At least half those times weren't my fault (honest - cross my heart). I "may" trust a good solid locking mechanism if I over engineered the crap out of it. The most reliable lock I've seen so far is on the Opinel. The piece that turns around so the blade can't close into the slot.

    Thanks Chris.
     
  8. Mythtaken

    Mythtaken Staff Member CKM Staff

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    The red part is where the liner (or frame) is cut. The lower part in the picture is bent so that it lines up with the back piece of the blade tang. It gets heat treated to be springy (or it's made of Ti and is naturally springy). When the blade is fully open, it snaps into position against the tang. To close the blade, you only have to push the side of the spring to move it past the tang.

    If it's made correctly and fits nice and tight, it is very secure. You'd have to put enough pressure on the blade to accordion the locking part.
     
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  9. ToddR

    ToddR Putterer, Tinkerer, Waster of Time Staff Member

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    Ahhhhhhhhhhh..... (the sound of epiphany) now "liner lock" or "frame lock" makes sense. I was thinking that the liner is attached to the end piece too. Now that I see it in my head, it wouldn't have to be. Cool. Well that does seem pretty safe. Now that I'm writing this, it may have been one of those other kinds of locking blades that slipped and nearly lopped my finger off.
     
  10. Mythtaken

    Mythtaken Staff Member CKM Staff

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    The end piece (yellow in the pic) is just a spacer. You can use standoffs in it's place to reduce a bit of weight.

    As for safety, any of the locking types can fail if it isn't made right. Frame locks can fail if there's some play in the blade when its open, as can a lock back. Even your Opinel can fail if the locking ferrule is loose enough to move on its own.
     

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