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  1. #31
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    Oct 2016
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    Melbourne
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    I machine off the old spur gear and press fit the new gear on and put some tacks welds on as well. I have a question for you guys out there about the mill head. Some photos for you to look at please let me know if you know what i can do or have any suggestions.

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  2. #32
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    Oct 2016
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    Melbourne
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    Pick up the feed motor armature today all good and bolted the motor onto the feed gearbox, also got the ram on, feels so much better than before nice and smooth and clean up the worm gear.

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  3. #33
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    Oct 2016
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    Melbourne
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    Started work on the mill head today. I'm replacing all the tapped bearings and maybe the bearing on the hand wheel, also put the mill head back onto the ram as not to damage the paint work and it was easier this way. It's looking like a milling machine now.

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  4. #34
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    Oct 2016
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    Melbourne
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    Been cleaning up the gears for the mill head and replace the bearings. Now have a problem with the spindle and shaft gear, as you can see there is quite a bit of damage to the teeth so off to ronson gears and find out if i can get new gears and then get them machine and i think the teeth may need to be hardened??


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  5. #35
    Join Date
    Aug 2008
    Location
    near Rockhampton
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    5,665

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    I think you might need to prepare for sticker shock when you get the price to make new ones. The part with the gear on it is repairable. I saw Phil get a spindle nose rebuilt that had been chewed to bits, it was an amazing job that was done. Probably TIG welded I would guess.

    The bottom part does not look too hard to make in the home shop.
    Gold, the colour of choice for the discerning person.

  6. #36
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    Oct 2016
    Location
    Melbourne
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    Yeah i know what you mean, my thinking is to see if i can buy these gears and take it to my local machine shop to have the teeth milled out. The part with the gear is on looks like it has bee tig welded on bit hard to see in the photos.
    Quote Originally Posted by .RC. View Post
    I think you might need to prepare for sticker shock when you get the price to make new ones. The part with the gear on it is repairable. I saw Phil get a spindle nose rebuilt that had been chewed to bits, it was an amazing job that was done. Probably TIG welded I would guess.

    The bottom part does not look too hard to make in the home shop.

  7. #37
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    Aug 2008
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    near Rockhampton
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    The top part could be supposed to be soft as it might be a consumable part.

    I suspect most of the problem is from operators changing speeds when the machine is still running and grating that dog clutch.
    Gold, the colour of choice for the discerning person.

  8. #38
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    Oct 2016
    Location
    Melbourne
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    Yes will see if i can file it, i think that is how you can tell if it is hardenede? Ah is this what it is called dog clutch, i'm not to good with my temology with milling machine parts but i am learning . The previous owner said he could not run the mill in reverse as it will pop the fuse, but it's making sense now as i turn the top gear in reverse it push the bottom gear out, this is why he mark a x on the control switch. I think he did not won't to make repairs on the mill

  9. #39
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    Oct 2016
    Location
    Melbourne
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    I finish off cleaning and inspecting the mill head parts and have found another problem to fix, as i was removing the shaft from the clock spring housing the second piece broke off so now will need to modified the housing. The clock springs that are available are not for this type of spring housing which uses a pin. A photo here of what i want to do with the housing.

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  10. #40
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    Oct 2016
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    Melbourne
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    Got some more work done on the mill, clean up the table no damage on the half nut . The small scissor lift comes in handy when you have tight spots to lift heavy items.

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  11. #41
    Join Date
    Aug 2015
    Location
    Melbourne, Australia
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    406

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    Mark, awesome job. That is a lot of work. That mill looks a hefty bit of kit. Must weight 1500kg?

  12. #42
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    Oct 2016
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    Melbourne
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    Quote Originally Posted by StrayAlien View Post
    Mark, awesome job. That is a lot of work. That mill looks a hefty bit of kit. Must weight 1500kg?
    Thanks Greg, I just about pulled everything apart and clean and check for damage and repaint. Yeah about 1400kg Nice and heavy, the table is bloody heavy no way too men can lift it i think maybe 4 men The Okuma lathe that i also done a clean and repair comes in at 1800kg the heavy the machine the better, as i found out with the lathe when machining up some 4140 and some harden steel the lathe had no problem with that material, will see how i go with inconel.
    I just read through your grinder project well done you have put a lot of work on it. I like how you went about machining up the gears, i may have to machine up a gear for the mill.

  13. #43
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    Aug 2015
    Location
    Melbourne, Australia
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    406

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    Hey Mark,

    Sorry for late reply - dunno how but I missed this reply. Apols.

    Thanks re grinder project. There will be more on that soon. That old girl will live again for sure.

    Re the gears. It took a lot longer to prepare for gear cutting than it did actually cutting them. I have more gears to cut soon but I am considering this approach:

    https://www.youtube.com/watch?v=bQXW5DP4ZSc

    Keep at it there - you're making good progress, and keep the pics coming. )

    Greg.

  14. #44
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    Oct 2016
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    Melbourne
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    Quote Originally Posted by StrayAlien View Post
    Hey Mark,

    Sorry for late reply - dunno how but I missed this reply. Apols.

    Thanks re grinder project. There will be more on that soon. That old girl will live again for sure.

    Re the gears. It took a lot longer to prepare for gear cutting than it did actually cutting them. I have more gears to cut soon but I am considering this approach:

    https://www.youtube.com/watch?v=bQXW5DP4ZSc

    Keep at it there - you're making good progress, and keep the pics coming. )

    Greg.
    G'day Greg,
    no worries, yes there is a lot to set up for gear cutting. Interesting video. I have decided to make a new dog clutch gear for the mill, so my plan is to finish off the mill i can still use it as it is to machine parts but that gear will have to be replace soon. Looks like i have to spend over $100 just for a Gear Tooth Pitch Gauge I don't think i have a choice, i can't keep taking the top part off the mill head to check the gear with the original dog clutch gear. I will start a new thread in the metalwork projects soon. Will have some update photos very soon.

    Cheers,
    Mark.

  15. #45
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    Oct 2016
    Location
    Melbourne
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    Work has slowed down a bit on the mill as this part of the project is time consuming. Had to make up some shims for the DRO system as i have painted all the small brackets and spacer plates that hold the DRO rails. Purchase a bracket for the DRO box and have started collecting tooling for the mill, a couple of chinese arbors and a large chinese mill vice. LOL i pulled it apart and stated to clean it and found some lumps of casting sand under the vice that had been painted over with black paint Still a bit more work to be done.

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