Hi all been busy this summer - back for a while,-
Wowwee. Test run yesterday of the Stevo Eee-lec-tronik hobber. Quick run down on what this is. Simply put it's a stepper driven dividing head that reads the impulses from an arbor driven shaft encoder vis a 'black box' [ nothing to do with Niomie Campbell ] Using this idea does away with a complex gear train between the arbor and the dividing head making setup times quicker. Managed to get the stepper driven head mounted on the horizontal mill table in between customers calling and ringing up and generally being a pain. Finished tidying the wiring for the driver box and connected this to the head and the arbor driven encoder. Found some scrap brass blanks and a decent 12 DP gear hob so I turned three blanks up all the same. Fitted the blanks to the stepper head and set the table over by 3 degrees 20 minutes which is the lead angle of the hob. Set the depth, wound clear and started this up, amazing to see it start cutting and all the while you are expecting this to run all the teeth off. First one off had wavy teeth because I'd forgotten to tighten the blank up. I won't mention what happened to the second one After all this is ONLY a test run, isn't it ? Turned all three blanks down to get rid of the mistakes and restarted using fewer teeth No problems this time. I've put some pics on my web space, 10 in all Just keep changing the last number from indexer1 thru to indexer10
This pic is 4 Myford 21T metric gears that took 8 minutes to cut the 4 gears.
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