*The basic frame consists of gear case and cardan joint. The hole-distance is easy to control and will not be affected by the gears. The
set up time is thus saved and it is mostly free of dead angles. It is very suitable for working of round holes. The gear, bearing, output
shaft and cardan joint are all intensified, so it is good at machining hard parts such as steel parts. To ensure the lifetime of the cardan
joint, the moving range should be confined within 15 degrees, which means within a distance of 30mm to the vertical status.
(We will design the structure of gear case, that is, the position of the boring hole as much as possible according to the coordinate of