Sintokogio, Ltd.

Masato Umeoka

Hiroaki Suzuki

Takuya Koyama

Hideaki Kaga

Shoichi Yamamoto

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

Centrifugal projector and blade

The centrifugal projector () of the present invention has: a side plate (), a plurality of blades () attached to the side plate (), a control cage (-) disposed on a radial inner side of the side plate for releasing the projection material between blades from an opening portion (-), a distributor (), 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 () for rotating the side plate, blades and distributor; wherein the blades are formed to be pitched so that a radial outer side () thereof is positioned to a rear in the rotational direction (R) compared to a radial inner side () thereof; the control cage (-) has a plurality of opening windows (-), 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.

Centrifugal projector

The present invention is a side plate unit () used in a centrifugal projector () which projects projection material () toward a processing target by rotating a plurality of blades (), and the side plate unit () being provided to attach the plurality of blades thereto, the side plate unit () comprising: a pair of side plates (); and a joining member () for joining the pairs of side plates; wherein guide channel portions () are respectively formed on mutually opposing surfaces of the pair of side plates (); and the side plate guide channel portions () are formed to be pitched so that the radial outer side thereof is positioned to a rear in the rotational direction (R) compared to the radial inner side thereof.

Side plate unit and centrifugal projector

The purpose of the present invention is to provide a shot processing device and a projector such that the projection amount of a projection material can be minimized. The present invention provides a shot processing device equipped with a centrifugal projector for projecting a projection material onto a workpiece and a support mechanism for supporting the workpiece at a processing position where surface processing by the projector can be carried out, wherein the projector is equipped with: a cylindrical control cage which the projection material is supplied into and which has an opening formed on a side wall as a projection material discharge port; and an impeller that has a plurality of blades, which are arranged outside of the control cage and extend outward in the radial direction of the control cage, and rotates about the central axis of the control cage, wherein each blade has, disposed on a front-side surface in the rotation direction, a rearward inclined section inclining toward the rear-side in the rotation direction.

Shot processing apparatus and projector

The purpose of the present invention is to provide a shot peening apparatus for which size increase is limited by projecting a shot material evenly on a workpiece using a single projector. The present invention provides a shot peening apparatus equipped with a workpiece-conveying mechanism for conveying a workpiece and a projector for projecting a shot material at the workpiece. The workpiece-conveying mechanism is equipped with: a pair of rollers, which extend in the workpiece conveyance direction, on which the workpieces are loaded, and which are rotated centered on the longitudinal axis line; an endless chain; and conveyance members for pressing and conveying workpieces in the conveyance direction. The projector is a centrifugal projector and is equipped with: a control cage into which the shot material is supplied and in which a first opening and a second opening are formed; and a bladed wheel, which is provided with multiple blades having a backward-sloping section that slopes toward the back in the rotation direction and which rotates centered on the central axis line of the control cage. The first opening and the second opening of the control cage are separated from each other in the circumferential direction of the control cage and are disposed offset from each other in the direction of the central axis line of the control cage.

Shot processing apparatus

The purpose of the present invention is to provide a drum-type shot peening device capable of shortening processing time. This shot peening device comprises: a bottomed, cylindrical drum having one end thereof open; and a projector provided on the open side of the drum and which projects projection material on to a workpiece inserted inside the drum. The projector comprises: a cylindrical control gauge having an opening window that is formed in the side wall thereof and serves as a discharge port for the projection material, said opening window having a rectangular shape having two sides thereof parallel to the center axis of the control gauge having the projection material supplied therein; and an impeller comprising a plurality of blades arranged on the outside of the control gauge so as to extend in the radial outside direction of the control gauge, said impeller rotating around the center axis of the control gauge and having a backward-tilting section that is tilted towards the rear side in the blade rotation direction and is provided on the surface on the front side in the rotation direction.

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Toyokawa, Japan

Masato Umeoka