Shot processing apparatus

Patent metadata

Field	Value
Publication number	US-2016354897-A1
Application number	US-201615142823-A
Country	US
Kind code	A1
Filing date	Apr 29, 2016
Priority date	Jul 22, 2014
Publication date	Dec 8, 2016
Grant date	—

Abstract

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.

First claim

What is claimed is:

1 . A shot processing apparatus comprising:
a cylindrical drum opening at one end and having a bottom at the other end; and a centrifugal projector, placed at the opening side of the drum, for projecting projection material onto a workpiece loaded into the drum; wherein the projector comprises:
a cylindrical control cage into which projection material is supplied, on the side wall of which an opening window is formed to serve as a discharge opening for the projection material and the opening window has a rectangular shape including two side parallel to the center axis line of the control cage;
and a blade wheel,
wherein the blade wheel includes:
at least one side plate;
a plurality of blades attached to the side plate so as to extend radially outwardly of the control cage outside of the control cage;
a rotary axis for rotating the side plate and the plurality of blades; and
an introducing part for introducing the projection material between the plurality of blades;
wherein the blade includes a projection surface for projecting the projection material, and the projection surface has a first part being a radially inner part of the blade and a second part being a radially outer part of the blade; the first part of the blade is formed so as to be inclined such that a radially outer side of the first part is rearwardly positioned in a rotational direction compared to a radially inner side of the first part, and the second part of the blade is formed to be positioned frontwardly of an imaginary line in the rotational direction, which imaginary line is defined by extending the first part of the blade in the radially outward direction, wherein the blade has a blade projection portion on which the projection surface for projecting the projection material is formed, and an attachment portion being formed thicker than the blade projection portion at both edge portions of the blade projection portion and integrally formed with the blade projection portion; wherein the attachment portion is formed in a straight shape at least in a plane perpendicular to the rotary shaft direction of the blade in its outer part and has a locking portion formed such that a plane perpendicular to the direction of the rotary shaft in the radial inner part thereof is formed so as to project from the straight shape; a side plate unit for attaching the plurality of blades thereto; wherein the side plate unit includes a pair of side plates having at least the one side plate, and a connecting member for connecting the pair of side plates; guide channel portions are respectively formed on mutually opposing surfaces of the pair of the side plates in the side plate unit; and the side plate guide channel portions are formed to be inclined such that the radial outer side thereof is positioned rearwardly of the radial inner side thereof in the rotational direction; wherein the side plate unit is attached to the rotary shaft by a bolt, and a recessed portion for attaching the bolt is provided in the guide channel portion of the side plate of the side plate unit.

2 . A shot processing apparatus of claim 1 wherein the radial length of the first part is set to be longer than the radial length of the second part.

3 . A shot processing apparatus of claim 1 , further comprising:
a cabinet for housing the drum and comprising a infeed/outfeed port through which workpieces are loaded and unloaded, which is closed by an infeed/outfeed door; wherein the projector is attached to the cabinet; and the shot processing apparatus further comprises a positioning machine for selectively disposing the drum at a workpiece loading position at which the workpieces are loaded; a shot processing position at which the drum opening and the projector oppose one another, and a workpiece discharge position at which the workpieces are discharged.

4 . A shot processing apparatus of claim 1 further comprising:
a drum lid for closing off the opening on the drum where the projector is installed;
a movement mechanism for selectively disposing the drum lid at the closing position at which the drum opening is closed off, and a retracted position not interfering with the workpiece loading means which introduces workpieces through the drum opening into the drum; and
a rotating mechanism for selectively disposing the drum at the workpiece introducing and shot processing position where the workpiece is loaded and the drum opening and the projection machine oppose one another, and at the workpiece discharge position where workpieces can be discharged from the drum.

Assignees

• Sintokogio Ltd

Inventors

• Kaga Hideaki
• Suzuki Hiroaki
• Yamamoto Shoichi
• UMEOKA Masato
• Koyama Takuya

Classifications

• B24C5/06

  Impeller wheels; Rotor blades therefor · CPC title

• B24C3/30 Primary

  Apparatus using impellers · CPC title

• B24C3/26

  the work being supported by barrel cages, i.e. tumblers; Gimbal mountings therefor · CPC title

• B24B31/023

  with tiltable axis · CPC title