A water-abrasive suspension cutting facility (1) includes a high-pressure source (3) for providing (301) water at a high pressure, a high-pressure conduit (5) which is connected to the high pressure source (3), a pressure tank (11) for providing (303) an abrasive agent suspension (13) which is at a high pressure, a lock chamber (21) which is designed to temporarily be at a high pressure and temporarily at a low pressure and a refilling valve (19) for refilling (311) the pressure tank (11) from the lock chamber (21). A delivery aid (45) is fluid-connected to the pressure tank (11) at the suction side in a manner such that given high pressure in the lock chamber (21), the delivery aid is cable of sucking an abrasive agent suspension out of the lock chamber (21) through the refilling valve (19) into the pressure tank (11).

A water-abrasive suspension cutting facility (1) includes a high-pressure source (3) for providing (301) water at a high pressure, a high-pressure conduit (5) which is connected to the high pressure source (3), a pressure tank (11) for providing (303) an abrasive agent suspension (13) which is at a high pressure, a lock chamber (21) which is designed to temporarily be at a high pressure and temporarily at a low pressure and a refilling valve (19) for refilling (311) the pressure tank (11) from the lock chamber (21). A delivery aid (45) is fluid-connected to the pressure tank (11) at the suction side in a manner such that given high pressure in the lock chamber (21), the delivery aid is cable of sucking an abrasive agent suspension out of the lock chamber (21) through the refilling valve (19) into the pressure tank (11).

The present invention is a centrifugal projector (1) for projecting projection material (2) toward a processing target, comprising a side plate (11), a plurality of blades (3) attached to the side plate, a rotary shaft (14) for rotating the side plate and the blades, and an introducing part (32) for introducing the projection material between the blades; wherein the blades (3) includes a projection surface (3a) for projecting the projection material, and the projection surface (3a) has a first part (3b) being a radial inner part of the blade and a second part (3c) being a radial outer part of the blade; the first part (3b) is formed to be pitched so that a radial outer side (3e) of the first part is positioned to a rear in the rotational direction (R1) compared to a radial inner side (3f) of the first part, and the second part (3c) of the blade is formed to be positioned to a front in the rotational direction (R1) of an imaginary line (L1) which extends the first part (3b) of the blade toward a radial outer side of the projector.

The present invention is a centrifugal projector (1) for projecting projection material (2) toward a processing target, comprising a side plate (11), a plurality of blades (3) attached to the side plate, a rotary shaft (14) for rotating the side plate and the blades, and an introducing part (32) for introducing the projection material between the blades; wherein the blades (3) includes a projection surface (3a) for projecting the projection material, and the projection surface (3a) has a first part (3b) being a radial inner part of the blade and a second part (3c) being a radial outer part of the blade; the first part (3b) is formed to be pitched so that a radial outer side (3e) of the first part is positioned to a rear in the rotational direction (R1) compared to a radial inner side (3f) of the first part, and the second part (3c) of the blade is formed to be positioned to a front in the rotational direction (R1) of an imaginary line (L1) which extends the first part (3b) of the blade toward a radial outer side of the projector.

A shot blasting machine includes a shot processing assembly, at least one impeller assembly, a collecting assembly, and a lifting assembly. The at least one impeller assembly includes a pair of rotary plates, a plurality of impeller blades, a plurality of connecting rods, and a protective case body. Each of the rotary plates has a central hole, a plurality of impeller blade grooves, and a plurality of limiting recesses. Each of the plurality of impeller blade grooves has a groove bottom part that is adjacent to the central hole and a groove top part that is adjacent to a circumference of each of the pair of rotary plates. Each of the plurality of impeller blades including a vane part and a pair of blade side parts that are connected to two sides of the vane part, and each of the blade side part has a limiting protrusion.

An impeller structure including two rotating discs, connecting components, and high-speed blades is provided. Each rotating discs includes a hole, locking holes, and snap-in slots. The snap-in slot includes an outer slot and a limit slot. The connecting component connected to the rotating discs through the locking holes. The high-speed blade includes a body and protrusions. The body includes two lateral walls. The high-speed blades are disposed between the rotating discs. Under high-speed rotation, the high-speed blade moves toward an outer edge of the rotating disc due to a centrifugal force. The lateral wall of the body is snapped into the snap-in slot and tightly fitted in the outer slot. The protrusion is snapped into the limit slot and restricts displacement of the protrusion. The impeller structure is easy to disassemble and assemble, and can withstand high rotating speeds. Also provided is a projection equipment with the impeller structure.

The centrifugal projector (1) of the present invention has: a side plate (11), a plurality of blades (3) attached to the side plate (11), a control cage (41-45) disposed on a radial inner side of the side plate for releasing the projection material between blades from an opening portion (41a-45e), a distributor (22), disposed on a radial inner side of the control cage, for mixing and supplying the projection material to the control cage, and a rotary shaft (14) for rotating the side plate, blades and distributor; wherein the blades are formed to be pitched so that a radial outer side (3c) thereof is positioned to a rear in the rotational direction (R1) compared to a radial inner side (3b) thereof; the control cage (41-45) has a plurality of opening windows (41a-45e), or a single opening window in which a portion or all of a plurality of opening windows are respectively overlapped and integrated into a single piece.

The centrifugal projector (1) of the present invention has: a side plate (11), a plurality of blades (3) attached to the side plate (11), a control cage (41-45) disposed on a radial inner side of the side plate for releasing the projection material between blades from an opening portion (41a-45e), a distributor (22), disposed on a radial inner side of the control cage, for mixing and supplying the projection material to the control cage, and a rotary shaft (14) for rotating the side plate, blades and distributor; wherein the blades are formed to be pitched so that a radial outer side (3c) thereof is positioned to a rear in the rotational direction (R1) compared to a radial inner side (3b) thereof; the control cage (41-45) has a plurality of opening windows (41a-45e), or a single opening window in which a portion or all of a plurality of opening windows are respectively overlapped and integrated into a single piece.

A shot processing device according to an aspect includes: a guide portion provided in a conveyance direction of a workpiece; a rotation mechanism which includes a first endless belt providing a placement surface having the workpiece placed thereon and a first drive unit driving the first endless belt so that the placement surface moves in a direction opposite to the conveyance direction; a conveyance mechanism which pushes the workpiece toward the conveyance direction so that the workpiece on the placement surface rolls and moves in the conveyance direction along the guide portion; and at least one projector which projects shot media to the workpiece rolling and moving on the placement surface.

A method of altering an additively manufactured part can include orienting a surface of the additively manufactured part toward a rotational center that may be independent of a rotational axis defined by the additively manufactured part, flowing an abrasive media past the surface, rotating the additively manufacturing part about the rotational center; urging abrasive particles in the abrasive media past the surface abrasive media to impinge the surface with centrifugal force generated by the rotating, and improving surface finish of the surface.