The drilling table was assembled from two parts.
The table top itself is a GG25 plate from the steel trade. The column mount is made of S355J2+N.
First the table was machined with 0.5mm machining allowance on the top of the table and on the circumference. The column mount was turned and pressed into the table top with a 16mm shoulder with Loctite.
The column mount was then clamped in a 20mm collet on the lathe and the table was turned to its final dimensions on the face and circumference. Then the clamping slots were machined.




I would like to say something else about the small drill chuck of the drilling unit.
It is from Chinese production of "Sanou". It has a short taper J0 (Jacobs taper 0) and clamps up to 4mm.
With a 4mm drill the performance of the machine is really reached, if not already exceeded.
The table top itself is a GG25 plate from the steel trade. The column mount is made of S355J2+N.
First the table was machined with 0.5mm machining allowance on the top of the table and on the circumference. The column mount was turned and pressed into the table top with a 16mm shoulder with Loctite.
The column mount was then clamped in a 20mm collet on the lathe and the table was turned to its final dimensions on the face and circumference. Then the clamping slots were machined.
I would like to say something else about the small drill chuck of the drilling unit.
It is from Chinese production of "Sanou". It has a short taper J0 (Jacobs taper 0) and clamps up to 4mm.
With a 4mm drill the performance of the machine is really reached, if not already exceeded.
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