Spin indexer. Any idea how to use them?

[383 240z]

http://www.ebay.com/itm/160678271455?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

I got one of these yesterday for WAY CHEAP. After I paid for it, I realized I have no idea how to use it. Anybody have a good link?? Keith

 

[Murphy'sSidekic]

You use it on a milling machine. Lock it down to the table, and use the right 5C collet to hold your part or round stock. If the part is long, you use the "tailstock" piece of the fixture as well to help support the length. Then you go about your machining on one surface, index the jig, and machine that surface and so on. It's good for placing holes or flats or keyways or any other feature on a circumferential pattern. Keep in mind that since it is only a 5C jig, the max clamping size is fairly small.

 

[383 240z]

Thanks Murph, I understand the basic concept I'm more concerned with the indexing part of this. How to determine what hole is what degree ect. I have 5C collets up to 1.125" in 1/16th increments, and this is the only fixture that I have that uses them. Keith

 

[Alan Douglas]

Depending on the manufacturer, there should be a spring-loaded pin or lever that releases the collet so it is free to rotate, or locks it in one of six or 12 or more positions.

 

[larry_g]

http://www.toolsandgarages.com/index.php?topic=206.0

Look at link above. You use this like any vernier with the major increments, 10*, and then the vernier holes, 1-9, to get the minor increment.

on edit http://www.neme-s.org/Shaper Books/Odds and ends/Spin Indexer Instructions Phase II.pdf

The above is the instructions for a Phase 2 unit, which will apply to most indexers of this style.

lg
no neat sig line

 

[Kevin54]

You can use the spin indexer to set your degrees. Say for instance, you want to drill holes around the circumference of a piece of round stock. You find the center of the stock, start out at zero on the plate with all of the holes, then rotate the part and lock it in with the spring loaded pin. You can also use it in a surface grinder to grind the O.D. of a piece of round stock. Normally the spring loaded locking pin will have a neutral position that leaves the pin in the up position, then you can continuously crank the handle, hence turning your surface grinder into an O.D. grinder. It does take some indicating in though to get things square to your magnetic chuck on your grinder, or square to the table in a mill. It's not the best way to grind the O.D. of something, but it's a hell of a lot cheaper than buying an O.D. grinder.

BTW....if you got it for $69 or less than what's posted, you got a hell of a deal.