-
Welcome back Guest! Did you know you can mentor other members here at H-M? If not, please check out our Relaunch of Hobby Machinist Mentoring Program!
Tool and cutter grinder build
- Thread starter Mark_f
- Start date
- Joined
- Aug 31, 2013
- Messages
- 321
Mark
Take it easy my friend and try not to push too hard, we want to have you around to keep us all stimulated with ideas. The grinder has taken on a great look and almost ready to do anything you wish. Now rest up for the next bit of work.
Be well my friend
Nelson Collar
Take it easy my friend and try not to push too hard, we want to have you around to keep us all stimulated with ideas. The grinder has taken on a great look and almost ready to do anything you wish. Now rest up for the next bit of work.
Be well my friend
Nelson Collar
- Joined
- Jul 23, 2014
- Messages
- 347
Mark, I really admire your work on this machine. Absolutely going in my file of someday I would like to be able to do work to this level. 
I worked on my micrometer stylus today. Machined the body and adjustment nut.
The threads are 5/8-40. This gives the adjustment .025" per turn of the dial. I would say these threads are a class 3C fit. There is No detectable play and they turn smooth and free. Each division on the dial is .001" and the distance between marks is close to .100". This will make fine adjustment easy. I checked the accuracy using feeler gauges and it is right on. Now the hard part is done, I will cut to length And finish the unit. This will be for adjusting the height of the stylus for grinding end mill flutes. This height needs to be accurate and adjustments are very small, so this will make it very easy.
The threads are 5/8-40. This gives the adjustment .025" per turn of the dial. I would say these threads are a class 3C fit. There is No detectable play and they turn smooth and free. Each division on the dial is .001" and the distance between marks is close to .100". This will make fine adjustment easy. I checked the accuracy using feeler gauges and it is right on. Now the hard part is done, I will cut to length And finish the unit. This will be for adjusting the height of the stylus for grinding end mill flutes. This height needs to be accurate and adjustments are very small, so this will make it very easy.
- Joined
- Aug 31, 2013
- Messages
- 321
Mark
Looking nice but I'm kind of confused. I guess my first question should be, where does this micrometer go? I looked at the plans for the Bonelle and can not find it but when in the state of confusion we overlook things. Hope you are feeling better.
Nelson Collar
Looking nice but I'm kind of confused. I guess my first question should be, where does this micrometer go? I looked at the plans for the Bonelle and can not find it but when in the state of confusion we overlook things. Hope you are feeling better.
Nelson Collar
Gunrunner you need to order a set of these for the Z axis hand crank. Bill did you just spit coffee on your monitor? :rofl:
View attachment 253356
View attachment 253356
Last edited:
Gunrunner you need to order a set of these for the Z axis hand crank. Bill did you just spit coffee on your monitor? :rofl:
View attachment 253356
View attachment 253356
I finished the micrometer adjustable tool rest for the T&C grinder today.
The bottom thumb screw holds the stylus in the micrometer. The stylus which is tapered and about .050" at the top is small enough to sit under a 3/16" end mill easily. I really don't care about sharpening anything smaller than that. Once the stylus is set at the height for the flute level , the bottom thumb screw is tightened . Then the stylus will be lowered by a distance ranging from .004" to .030" depending on cutter diameter and grinding wheel diameter. These values are on a chart. This adjustment can easily be made by turning the micrometer knob and the setting is locked by the tip thumbscrew. Each division on the micrometer dial is .001". It is easy to set within .0005" .
I found some photos of a vernier adjustment Cuttermaster once supplied for the sideways adjustment of the tool rest. That is next on my list.
The bottom thumb screw holds the stylus in the micrometer. The stylus which is tapered and about .050" at the top is small enough to sit under a 3/16" end mill easily. I really don't care about sharpening anything smaller than that. Once the stylus is set at the height for the flute level , the bottom thumb screw is tightened . Then the stylus will be lowered by a distance ranging from .004" to .030" depending on cutter diameter and grinding wheel diameter. These values are on a chart. This adjustment can easily be made by turning the micrometer knob and the setting is locked by the tip thumbscrew. Each division on the micrometer dial is .001". It is easy to set within .0005" .
I found some photos of a vernier adjustment Cuttermaster once supplied for the sideways adjustment of the tool rest. That is next on my list.
