Transportable strip mill roller profile measuring unit - held on roller and having driven fast-return carriage with sensor withdrawn on return

摘要

The mechanism measures the profile over the full length of a roller of a hot strip mill immediately after withdrawing the roller pair of a set to determine roller wear and thermal deformation (prior to re-grinding). The reference points used are two pairs of adjustable hard steel balls which are positioned on the respective ends of the roller (where wear is min.) by electromagnets to hold a support structure of paralle tubes and C-shaped coupling plates. This structure carries two adjustable rails (rods) for a carriage with inductive sensor pin which is drawn along the roller at uniform speed (2.5 m/min.) by a driven endless tooth belt against a spring motor and then uncoupled from the belt to return at accelerated speed whilst the pin is simultaneously withdrawn from the roller surface. Used for, measuring wear and deformation of strip mill roller whilst still hot after withdrawing roller pair from roller set. The mechanism is transportable and uses the same measuring method as the roller grinding machine with equal accuracy (+/- 0.01 mm.) at the same speed (full roller length of e.g. 2.5 m. in 1 min.) to record a trace on an identical tape. SuccessiVe recordings are rapidly and easily obtd. before the roller has cooled down too much and the measurements are little or not affected by heat radiation (the rollers may be at up to 170 deg. centigrade).