Hi all

I'm started to retrofit a 35 years old CNC 2A637F3 Horizontal Boring Machine made by Russia.

I try to post photos and videos from my inspections and corrections here.

For the beginning, there is a question that how to inspect flatness and straightness of Y axis guideway which is about 4 meters long and consisted of 4 sets of 110mm ways.

I tried dismantle the column from the base and lay it down on the ground, then by the aid of jack screws and precision level, I tried to level the guide ways horizontally at about 0.03mm/m

I have a granite 00 grade straight edge with the length of 500mm in my work shop.

Is it possible to inspect 4000mm length by dividing into more than 8 sections and check it with bluing the 500mm granite edge and rub it on the guideway along the total length? (for example 10 segments of 400mm with 100mm overlap to each other)

Any how the largest camel type straight edge available on DIN 876 with 0 grade is 3000mm which is 1 meter short for my application. So what is the practical solution for this issue ?

Thanks

I'm started to retrofit a 35 years old CNC 2A637F3 Horizontal Boring Machine made by Russia.

I try to post photos and videos from my inspections and corrections here.

For the beginning, there is a question that how to inspect flatness and straightness of Y axis guideway which is about 4 meters long and consisted of 4 sets of 110mm ways.

I tried dismantle the column from the base and lay it down on the ground, then by the aid of jack screws and precision level, I tried to level the guide ways horizontally at about 0.03mm/m

I have a granite 00 grade straight edge with the length of 500mm in my work shop.

Is it possible to inspect 4000mm length by dividing into more than 8 sections and check it with bluing the 500mm granite edge and rub it on the guideway along the total length? (for example 10 segments of 400mm with 100mm overlap to each other)

Any how the largest camel type straight edge available on DIN 876 with 0 grade is 3000mm which is 1 meter short for my application. So what is the practical solution for this issue ?

Thanks