Brandenberger
Hot Rolled
- Joined
- Sep 19, 2017
Hi,
I have a surface grinder will roller-ways (brown and sharpe 510). The rollers
run in a flat way (front) and a inverted v-way (rear).
The table was scored by incorrect installation of the rollers in the v-way; the rollers didn't roll, but rather the table slid over the rollers. Since the rollers were hardened, the table lost that battle.
The scoring is about .005" deep. It doesn't affect the whole of the V-way, think of how a cylinder running parallel to an inverted V-way and it'll be clear that it would score a channel on each side.
This picture shows the underside of the table, with the rollers and cages in their approximate position. At the bottom left in the v-way channel you can see the score line.
I called around some grinding shops and the one I found that had a machine that could grind a 30" long table said the job would cost more than the grinder is worth.
Are there techniques for doing this by hand? Scraping would not seem to be appropriate, given the current surface (where undamaged) is smooth and intended for very high precision rollers (.750" to .000050" tolerance) to run in them.
I took a glance in the Connelly book but didn't see anything about such surfaces.
Obviously keeping the height of the inverted v-way relative to the flat way is pretty important.
At the extreme ends of travel I seem to have untouched surfaces which can probably be trusted to show the original relationships between the V and the flat ways.
Phil
I have a surface grinder will roller-ways (brown and sharpe 510). The rollers
run in a flat way (front) and a inverted v-way (rear).
The table was scored by incorrect installation of the rollers in the v-way; the rollers didn't roll, but rather the table slid over the rollers. Since the rollers were hardened, the table lost that battle.
The scoring is about .005" deep. It doesn't affect the whole of the V-way, think of how a cylinder running parallel to an inverted V-way and it'll be clear that it would score a channel on each side.
This picture shows the underside of the table, with the rollers and cages in their approximate position. At the bottom left in the v-way channel you can see the score line.
I called around some grinding shops and the one I found that had a machine that could grind a 30" long table said the job would cost more than the grinder is worth.
Are there techniques for doing this by hand? Scraping would not seem to be appropriate, given the current surface (where undamaged) is smooth and intended for very high precision rollers (.750" to .000050" tolerance) to run in them.
I took a glance in the Connelly book but didn't see anything about such surfaces.
Obviously keeping the height of the inverted v-way relative to the flat way is pretty important.
At the extreme ends of travel I seem to have untouched surfaces which can probably be trusted to show the original relationships between the V and the flat ways.
Phil