Hi,
i am an engineering student from germany and i would like to get your opinion about my scraping project. I am fairly new to the topic of scraping but i read and watched alot about it. Last year i managed to scrape my lathe slides with (in my opinion) good results. Now i am planning to rescrape my newly aquired milling machine: an Aciera F3 from 1964. A fairly small machine
(X 300mm/12inch; Y 135mm/5 inch; Z 250mm/10 inch).
I am confident about getting a dovetail way straight and fitting the gib correctly but i wonder how to align everything to be perpendicular in the end (with few tools and without tipping the machine over).
I only have a surface plate, straight edge and a master square which i am currently scraping in.
My plan is the following:
1. Scraping the Z-Axis straight. As i can´t tip the machine i have to scrape it in place. Therfore i don´t want to have to align it to anything to make the job as easy as possible.
my biggest concern is twist between the two flats and how to measure it. My rather crude idea was to make an indicator base that registers in the dovetail and rides along the axis while pressing it onto the way.
This is far from ideal but i don´t see any other way. Maybe you have a better idea.
2. Scraping the matching Z- Slide which also connects to the X-Axis. This should be fairly simple. perpendicularity between x and z lies in this part. Should be easily measured with the master square on the surface plate.
3. scraping the X-Axis. Should also be easy as i can measure on the surface plate.
4. Now assamble z and x again and scrape/adjust the mounting flange of the table to be parallel to X and perpendicular to Z, by placing the Square on the table and traversing Z with an indicator running on the square.
5. Scraping the machine side of the Y- axis flat and parallel. My surface plate is rather small (400x600mm; 16x24 inch) so maybe i can place that onto the ways upside down ? If not doing a similar thing as in 1. with the indicator base to measure twist.
A king way like thing won´t work as i don´t have a reliable reference nor a precision level (?). Perpendicularity to Z and X again by measuring against the square on the table.
6. Matching the Y slide while checking it on the surface plate for perpendicularity of the spindle by spinning an indicator in the spindle:
7.????
8. Profit . Or at least a reasonably straight and perpendicular machine.
So what do you think about this plan? Realistic or not? I am glad for any advice or critizism.
(if any more pictures are needed just say so, i could only upload 5 here (without uploading them elsewhere))
i am an engineering student from germany and i would like to get your opinion about my scraping project. I am fairly new to the topic of scraping but i read and watched alot about it. Last year i managed to scrape my lathe slides with (in my opinion) good results. Now i am planning to rescrape my newly aquired milling machine: an Aciera F3 from 1964. A fairly small machine
(X 300mm/12inch; Y 135mm/5 inch; Z 250mm/10 inch).
I am confident about getting a dovetail way straight and fitting the gib correctly but i wonder how to align everything to be perpendicular in the end (with few tools and without tipping the machine over).
I only have a surface plate, straight edge and a master square which i am currently scraping in.
My plan is the following:
1. Scraping the Z-Axis straight. As i can´t tip the machine i have to scrape it in place. Therfore i don´t want to have to align it to anything to make the job as easy as possible.
my biggest concern is twist between the two flats and how to measure it. My rather crude idea was to make an indicator base that registers in the dovetail and rides along the axis while pressing it onto the way.
This is far from ideal but i don´t see any other way. Maybe you have a better idea.
2. Scraping the matching Z- Slide which also connects to the X-Axis. This should be fairly simple. perpendicularity between x and z lies in this part. Should be easily measured with the master square on the surface plate.
3. scraping the X-Axis. Should also be easy as i can measure on the surface plate.
4. Now assamble z and x again and scrape/adjust the mounting flange of the table to be parallel to X and perpendicular to Z, by placing the Square on the table and traversing Z with an indicator running on the square.
5. Scraping the machine side of the Y- axis flat and parallel. My surface plate is rather small (400x600mm; 16x24 inch) so maybe i can place that onto the ways upside down ? If not doing a similar thing as in 1. with the indicator base to measure twist.
A king way like thing won´t work as i don´t have a reliable reference nor a precision level (?). Perpendicularity to Z and X again by measuring against the square on the table.
6. Matching the Y slide while checking it on the surface plate for perpendicularity of the spindle by spinning an indicator in the spindle:
7.????
8. Profit . Or at least a reasonably straight and perpendicular machine.
So what do you think about this plan? Realistic or not? I am glad for any advice or critizism.
(if any more pictures are needed just say so, i could only upload 5 here (without uploading them elsewhere))