60. Gas spring 2009/4/22
The Z axis head unit's weight is around 80Kgs, so the response of the
moving manual up-dowu handle when the head is moved up and down is different.
Therefore, to cancel the weight of the head, the gas spring was installed.
The gas pressure of the gas spring is about 35Kg by one.
The weight of the head unit of about 70Kg has been counterbalanced by installing
one gas spring right and left side respectively.
As a result, upper and lower weight almost becomes the same even when turning
with the manual handle, and the effect the same as the expectation has