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Thread: Sine Plate

  1. #1
    Supporting Member rossbotics's Avatar
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    Sine Plate

    The last post I submitted was a tool known as an Angle Dresser, an Angle Dresser is for shaping any angle on the side of a grinding wheel for grinding machines by means of a diamond nib, I had mentioned in that post that I was in the middle of making a new tool (I didn’t say what it was) and ran into a setup problem finishing that tool so it had to be put on the back burner until I made a tool to complete it with, and that’s why I had to make the Angle Dresser, (man that was a mouth full) Now that the Angle Dresser has been completed I can continue making the tool I was making before I made the Angle Dresser, I hope I made all that clear.

    Working with precision angles can be a little problematic to setup like anything else if you don’t have the right tools, without the right tools it takes longer and it probably didn’t come out as well as you wanted it to but you settled for it anyway, I have made quite a few angle plates for quick setups in the mill vice or for whatever reason, I wanted to make a tool that I could setup angles quickly and this is why the Sine Plate was designed and built.

    I have always used a Sine Bar, Tool Makers Vice, Dial Indicator, Gage Blocks and a Surface Plate to perform these setups making angle plates before which worked fine butwas a time consuming process, now I will be able to set the Sine Plate to any angle I want using the required amount of gage blocks then mount the tool makers vice on the Sine Plate and grind away, although a magnetic sine plate would have beennice.

    Sine plates are very simple in design yet a very high degree of precision has to be applied to the manufacturing process of this sort of tool to achieve precision end results, not just this Sine Plate was made that precisely but all the precision tools I make are checked from a Granite SurfacePlate using a Tenth Indicator, Gage Blocks and a Cylinder Square making sure everything to be flat, parallel and square within .0002” - .0003”

    The upper and lower plates of this tool were made from 3/4” 4140 pre hard steel, the rolls were made from 3/4” round 4140 TG&P pre-hardened steel, the locking strap was made from 1/4” thick 360 brass flat stock and the two side rails were made from 3/16” X 1” 4140 precision ground flat stock, all surfaces and edges were precision ground flat, parallel and square, the 90° V-Grooves that precisely locate the gage rolls were probably the most time consuming to grind, I made several trips back and forth from the surface grinder to the surface plate before I got the 5” center distance on the rolls perfect, I could only grind one side of the 90° v-groove at a time due to the width of my grinding wheel, a 1” wide wheel with a 45° dressed on both sides would have been the answer but I can only put a maximum 3/4" wide wheel on the machines spindle, always some little something isn’t there?

    All and all everything came out great, looks good and functions perfectly.
    This tool would be a challenge to make even for the experienced tool maker.


    Below are some photos of the machining and grinding processes of making this tool.
    As always thanks for looking
    And happy machining

    Doug

    Sine Plate-1.jpg

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    Sine Plate-14.jpg

    Sine Plate-15.jpg


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    Last edited by rossbotics; Sep 6, 2017 at 04:49 PM.
    Comments are always welcome
    Doug

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  2. The Following 13 Users Say Thank You to rossbotics For This Useful Post:

    almarghi (Jul 21, 2018), aphilipmarcou (Sep 8, 2017), emu roo (Sep 29, 2022), Frank S (Sep 7, 2017), high-side (Jun 4, 2020), Home-PC (Sep 29, 2022), jrouche (Sep 7, 2017), metric_taper (Sep 6, 2017), olderdan (Sep 7, 2017), Paul Jones (Sep 9, 2017), redearthbonsai (Jul 20, 2018), Seedtick (Sep 6, 2017), Toolmaker51 (Sep 8, 2017)

  3. #2
    Supporting Member ncollar's Avatar
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    Beautiful, no other word. You have a wonderful piece to enjoy.
    Nelson

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  4. The Following 2 Users Say Thank You to ncollar For This Useful Post:

    emu roo (Sep 29, 2022), rossbotics (Sep 7, 2017)

  5. #3

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    Great Project!

    I teach precision machining at a 9-12 career center. I would love to get the plans for the sine plate to use along with the pictures.

    Thanks

  6. #4
    Supporting Member olderdan's Avatar
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    I can see why you needed to make the angle dresser, we all know what its like to have to make something in order to make something, your mag chuck seems quite tall for your machine, the Eclipse ones that I am familiar with are about 2.5 inches tall.
    Sine tables looks deceptively simple but I appreciate the amount of work that went into it, chasing tenths takes a long time but you have made a great job of it as always.

  7. The Following User Says Thank You to olderdan For This Useful Post:

    emu roo (Sep 29, 2022)

  8. #5
    Supporting Member Frank S's Avatar
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    That sine plate is well worthy of its own special wood box great job, well done
    Never try to tell me it can't be done
    When I have to paint I use KBS products

  9. The Following User Says Thank You to Frank S For This Useful Post:

    emu roo (Sep 29, 2022)

  10. #6
    Supporting Member rossbotics's Avatar
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    Thanks Nelson
    Comments are always welcome
    Doug

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  11. #7
    Supporting Member rossbotics's Avatar
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    Thanks Frank
    I been thinking about making boxes for all my tools I've made, Going to take your advise and make some

    Doug
    Comments are always welcome
    Doug

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  12. #8
    Supporting Member rossbotics's Avatar
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    Thanks Dan
    That chuck on my grinder is as old as me and you put together LOL, It's a good old Walker and it still works perfect, I agree its a little tall but I have plenty of room, and like you said chasing tenths is very time consuming,

    Doug
    Comments are always welcome
    Doug

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  13. #9
    Supporting Member rossbotics's Avatar
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    Thanks vegerj
    where do you teach ? I'm going over the cad drawings to make sure everything is correct, there were a few changes made while building the Plate, but the plans will be available for download

    Doug
    Comments are always welcome
    Doug

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  14. #10

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    Thank Doug,

    I teach at Century Career Center in Logansport, Indiana.

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