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Post by ET on May 17, 2019 21:36:08 GMT -5
As I have been away for awhile I was wondering if there has been any advancement with the knurling operation?
Ed
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Post by ET on May 18, 2019 17:40:11 GMT -5
Okay no response so I take it no real advancement has been made. Time to take a more serious look at a design I've come up with. This requires a weld of knurling wheel to crankshaft. I believe if carefully done by a small fillet weld and focusing the heat away from the knurling teeth this should work. Now the first question is what type of knurl would be the best choice?
1) Straight
2) Angled knurl LH or RH
3) Diamond
Any suggestions?
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Post by 10ga on May 19, 2019 19:52:26 GMT -5
diamond
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Post by ET on May 19, 2019 20:01:52 GMT -5
Thanks for your response. You don't have to answer this question but if you do have a reason for this choice I would enjoy hearing it. Ed |
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Post by ET on May 19, 2019 21:54:50 GMT -5
 Just thought I would share what design I'm looking at. This assembly will be housed in a channel. |
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Post by jims on May 20, 2019 7:03:03 GMT -5
A nice easily usable knurling tool would be an asset. Hope it works out.
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Post by ET on May 20, 2019 9:18:19 GMT -5
A nice easily usable knurling tool would be an asset. Hope it works out. Thanks Jim. I have a good level of confidence that it will work. Just how good remains to be seen. This project will also be a test of my remaining mental and physical abilities because I'm not a spring chicken anymore, chuckle. Good thing is that this test is not regulated with a time limit. Ed |
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Post by Dunthat on May 20, 2019 12:11:38 GMT -5
Ed...
Check out the knurling tools on Amazon....I bought a dual wheel model from them...Plenty of different ones to choose from.
Zen
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Post by ET on May 20, 2019 13:28:43 GMT -5
Ed... Check out the knurling tools on Amazon....I bought a dual wheel model from them...Plenty of different ones to choose from. Zen Hey Zen, thanks for chiming in. This knurling tool is for bullets for my ML. Like to get away from the file method. Haven't seen anything on Amazon that is useable but some components I seek I have found at a reasonable price. The main item I need to find now is the channel that will house the crankshaft in the upper section and the support rolls in the below section. Then just need to hinge the 2-pieces of channel together. Then for the finishing touch a depth stop for downward travel to eliminate or minimize the use of a sizing die afterwards. Ed |
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Post by rvaughan on May 20, 2019 15:01:56 GMT -5
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Post by ET on May 20, 2019 16:41:44 GMT -5
Interesting concept. If I interpret this right it would require good hand strength. That I'm starting to lose some with the beginning of arthritis. Aging is not kind to the body and in my case leverage of the tool would be helpful. Thanks for contributing with your response. |
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Post by rvaughan on May 20, 2019 18:56:08 GMT -5
Understood. Your concept is way more interesting. Good luck.
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Post by peteo on May 20, 2019 20:10:31 GMT -5
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Post by ET on May 20, 2019 20:22:16 GMT -5
Understood. Your concept is way more interesting. Good luck. Thanks for the good luck. I wouldn't say my concept is more interesting but definitely more complicated to reach a desired result. If I get the end result I want to achieve then it will be worth the effort. If not then lesson learned. Ed |
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Post by ET on May 20, 2019 20:41:54 GMT -5
Thanks for the info. I even forgot about that old thread. Ed |
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Post by goblism on May 22, 2019 22:55:30 GMT -5
I have an "ultimate cannelure tool" that has a kneeling adapter. This is what I plan to use if I need to knurl bullets.  |
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Post by ET on May 28, 2019 13:54:04 GMT -5
Okay I decided to tackle this project for a knurling tool to simplify the knurling process. Picture is just to share my progress at this point. I Thank God for allowing me to have the ability to still do something like this. Everything has been done with a drill press, hacksaw and 10/32 tap. There is still a lot to do but I am pleased with this start. Not looking for compliments or recognition. Just sharing with this board. Also there will be a change in the knurling pattern. Because this project is coming along so well I decided to go with the diagonal pattern requiring 2-knurling wheels (20 TPI}. Will post update when I have something more significant to offer.  |
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Post by dannoboone on May 28, 2019 14:19:44 GMT -5
Velly interesting.....please keep us posted.
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Post by jims on May 28, 2019 21:34:15 GMT -5
Keep posting.
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Post by ET on May 29, 2019 20:35:27 GMT -5
The only update I can post for the moment is a minor advancement. The hinge pin and 2-lower 1/4" shafts are now done. I have a mini-lathe that hasn't been used for some years and now brought out of retirement, chuckle. Still need to do the crank shaft as well as machine a roller for one of the lower shafts. Once more progress has been made I'll post another picture. So far no screw-ups or hiccups. I'm really pleased with the results as this project progresses.
Ed
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Post by ET on May 31, 2019 18:24:50 GMT -5
OK a little update on progress  . Ignore the extra rollers as they were needed for depth stop measurement.  Everything coming together nicely but need to stop for a bit as I need to catchup on chores and a few obligation for gardening. |
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Post by jims on May 31, 2019 19:35:02 GMT -5
I appreciate the photos and write up. Quite interested in how it knurls.
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Post by ET on May 31, 2019 21:16:13 GMT -5
I appreciate the photos and write up. Quite interested in how it knurls. I'm really confident it will knurl. What I want too see is how fine an adjustment I can make with the adapted 10/32 screw. Time will reveal all, chuckle. |
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Post by ET on Jun 2, 2019 19:15:25 GMT -5
Just a note for those that are following this there will be a component change as I feel I see a weakness that needs to be addressed. The two lower shaft pins will be replaced with bolts that can be tightened to prevent movement. If shaft pins can rotate then there would be quick wear on the holes in the aluminum channel. Also I need to acquire some knurling wheels hopefully this coming week. This has been a fun project testing my abilities and workmanship. Will start a new thread for final results and observations when project completed.
Ed
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Post by jims on Jun 2, 2019 20:44:01 GMT -5
I await seeing the final fixture and the knurled bullets it produces. Often changes need to be made along the way until one gets it just where he wants it.
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Post by ET on Jun 2, 2019 21:55:06 GMT -5
I await seeing the final fixture and the knurled bullets it produces. Often changes need to be made along the way until one gets it just where he wants it. Jim You are absolutely right about changes needed to be made to produce desired results. In a way this tool will be a sort of prototype to try. I've studied this countless times looking for any weakness or flaws. One area of concern is when the upper knurling wheel gets weld to the crankshaft assembly is affecting the shaft straightness. I've an approach that should minimize distortion and instruct a welder how I would prefer it done. Because I don't have TIG equipment some of the boys at a job site have already offered to help me out. Also the crank handle will be bent at the site because I don't have a torch. Other than replacing the 2-lower shafts everything else is now done. Yeah I'm also starting to get anxious to get this completed and see the results, chuckle. Ed |
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Post by dannoboone on Jun 3, 2019 9:57:55 GMT -5
If shaft pins can rotate then there would be quick wear on the holes in the aluminum channel. Ed Bushings? Years ago I made a contraption of 3/8" steel. Although knurling is still even, wear in the holes is beginning to show. I'm thinking of drilling out the holes and installing bushings. |
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Post by ET on Jun 3, 2019 10:55:06 GMT -5
If shaft pins can rotate then there would be quick wear on the holes in the aluminum channel. Ed Bushings? Years ago I made a contraption of 3/8" steel. Although knurling is still even, wear in the holes is beginning to show. I'm thinking of drilling out the holes and installing bushings. Thanks for that tip mention. Will keep an eye on the crankshaft wear. Hopefully using bearing grease periodically will slow down wear for some time. Ed |
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Post by ET on Jun 4, 2019 21:45:34 GMT -5
Okay, knurling wheels have been ordered. Now it's the waiting game, chuckle.
Ed
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Post by ET on Jun 5, 2019 16:50:13 GMT -5
OK I'm at a stand still for the moment but have a few pictures before completion. Not sure of length of delay as the boys that were going bend the shaft and weld the knurling wheel are now on strike, nuts. Hope you enjoy what you see that has developed. Also for now I'll be looking around for flanged bearing sleeves just in case. I believe dannoboone made a good point about certain wear to consider. No major modification will be needed to install them. So I'm on hold for a bit, chuckle.   Ed |
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