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Thread: Ratchet Cog's

  1. #1
    Join Date
    Jun 2007
    Location
    Ipswich QLD
    Age
    64
    Posts
    1,750

    Default Ratchet Cog's

    Got asked by Sue's friend to replace 2 poorly made ratchet cogs off a table loom these had been made from old chopping board material one had lost 3 teeth.



    20191207_103131.jpg

    Got some 6061 bar stock

    20200116_115704.jpg

    Drew up new cogs with 18 teeth machine blanks to size. Each cog had a slight .5mm rise to keep the cog away from the frame of the loom so it will not ware or rub against.

    20200120_101839.jpg


    Made an arbour to mount the 2 cogs on simultaneously cutting each in opposite directions when mounted, the flat faces together. Using 60^ cutter at depth of 3mm x 10mm into the quadrant to form the ratchet.
    Not bad for my first milling job, just need to double check everything in future is tight before & during.

    20200204_122747[1].jpg20200204_163124.jpg20200212_105431.jpg20200213_101331.jpg20200214_120003.jpg

  2. #2
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    67
    Posts
    4,347

    Default

    Great work Ray. Only problem is that the part is so strong, what will she break next.
    Kryn
    To grow old is mandatory, growing up is optional.

  3. #3
    Join Date
    Jun 2007
    Location
    Ipswich QLD
    Age
    64
    Posts
    1,750

    Default

    Quote Originally Posted by KBs PensNmore View Post
    Great work Ray. Only problem is that the part is so strong, what will she break next.
    Kryn
    Kryn she had not used it at all it was a recent acquisition and being an 8 shaft well worth the trouble to have a new one made. Besides the lady looks after me with sales to the spinners group and sometimes brings or send cakes home with Sue This job was $$ tho no cakes.

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