Sectors 101

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Now that I got a working lever, I need a way to lock it into any position I want.This is the beginning of a sector.  Essentially a round gear sorta thingy that a pawl fits into.I don't have a large rotary table for my mill, so I had to get a little weirdThe innitial radius is found by drilling a hole, and using a ruler as a tram.  The hole comes into play later in the machining processThe circle is cut proud, and ground back to the true radius, then the hole is enlarged to fit a 3/8 studThe stud is mounted on the milling table, trued, and the rest beginsMeasurements around the perimiter of the circle are done with a divider, and marked in pencil.  Not rocket science.Then the milling begins. Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:More milling picsFinal step tomorrow.I promise it will make senseSouthern Engineerin' at it's best Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:Dang Sam, you put some work into that puppy!!!  Great mind you got there.
Reply:I get it makes alot of sence to me we have this on some old equipment at work.Millermatic DVIMillermatic 251Older buzz box Cheap 120 welder
Reply:like the detentes on an old harrow or if you can go far enough back in your memory the horse drawn hay rakes had a similar setup. Of course tey were never this heavy but they weren't holding up what you got there Samm. Nice work by the way.
Reply:Finished the machining today, now it's time to mount it on the frame.Didn't get done, because I decided to spend the day off.  Too late to get a crop in now anyhow.  Ground dried up, and is hard as iron.  Maybe Winter Wheat in the early fall sometime at the end of augustPlate cut away from arc, and ready to install.Supper's callin' , and I'm listenin'I hope everyone had a good Memorial Day Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:CRAP..................Showed my tool of choice for inside grinding, but didn't show the results  If your careful, you can get a nice finish on a circleGonna burn my meat.  Later Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:You Da Man, Samm. 9-11-2001......We Will Never ForgetRetired desk jockey. Hobby weldor with a little training. Craftsman O/A---Flat, Vert, Ovhd, Horz. Miller Syncrowave 250