Abstract: The machine includes a rotational mounting bracket, upon which an agricultural disc is supported and held. A hold-down plate that can rotate freely is arranged above the mounting bracket. A linear actuator displaces the hold-down plate vertically in a downwards direction to press the agricultural disc. A laser measurement device is coupled to a linear guide where the hold-down plate forms part of a rotational head-piece fixed to a rod of the linear actuator. A method includes determining a central reference height on a model disc, determining the height of points in the periphery of the disc to be measured, calculating the average of the measured heights and comparing with the central reference height to determine whether the disc is valid or not.

Abstract: The machine is used to automatically measure both the twist and concavity of agricultural discs with a high level of precision. Currently, in order to calculate such measurements, dial indicators are used to investigate whether twist and concavity variables are within pre-established tolerances. This conventional methodology is slow and imprecise. In order to measure twist and concavity according to the invention, the agricultural disc is rotated and data is recorded along the periphery of the disc using a laser measurement device, by means of which a previously recorded central reference point is also determined, by comparing the resulting values in terms of height.