Patent ID: 9061396
Filing Date: 2015-06-23
Classification: B24C

Abstract:
1. A method of controlling or adjusting a surface treatment effected by abrasive blasting by means of abrasion agents or abrasives from a surface treatment device including an abrasive blasting wheel driven in rotation about an axis and emitting a jet of abrasion agents or abrasives, said abrasion blasting wheel including straight or curved blades, a support or casing on which the wheel is rotatably mounted, an abrasives distributor placed at the centre of the wheel and fastened to the wheel, and a control member that is not driven in rotation during rotation of the wheel, placed around the distributor, said control member having a slot or opening controlling the feeding of abrasives to the blades and controlling the exit of the jet of abrasives from the wheel after said abrasives have been moved along the blades by centrifugal force, said control member being mounted movably with respect to the support to allow adjustment of the position of the slot or opening of the control member relative to the support, to control the exit of the jet of abrasives, wherein a control device is used including at least one swing-arm mounted movably relative to a wall protected by a lining of a wheel casing or an abrasive blasting chamber, said wall and lining having a first face facing toward the jet of abrasives leaving the wheel and a second face opposite said first face, said second face facing toward an area protected from the abrasive blasting, said swing-arm being mounted movably relative to said first face between a first position for which the swing-arm is not situated in the jet of abrasives leaving the wheel and a second position in which the swing-arm or an element thereof is situated in part of the jet of abrasives leaving the wheel, said swing-arm being mounted rotatably relative to an axis substantially parallel to the rotation axis of the abrasive blasting wheel so that in the second position of the swing-arm the jet of abrasion agents or abrasives acting on the swing-arm or the element is able to generate a rotation torque; said method comprising at least the following steps: