摘要:
A machine for centrifugally shooting abrasives that shoots the abrasives by rotation of an impeller is provided. In the machine, the impeller comprises a pair of disc-shaped side plates that face each other at a predetermined distance and a plurality of blades disposed between the side plates in the radial direction of the side plates. The impeller is mounted on a hub that is fitted into an output shaft of an electric motor. The impeller is covered by a cover. The side liner and blades of the machine can be easily replaced. A side liner 3 that is U-shaped with the longer side facing downward is detachably attached to the inner side of the cover 2. The upper part of the side liner is divisible into two parts. The side liner protects the side wall of the cover 2 from the abrasives that are shot from the impeller. The side liner has a U-shaped cross section. The impeller 1 is fixed to the hub 4 by screwing a bolt 15 on the hub 4 from the inner sides of the side plates 11. The diameter of the impeller 1 is limited to be 200 mm at maximum.
摘要:
A machine for centrifugally shooting abrasives that shoots the abrasives by rotation of an impeller is provided. In the machine, the impeller comprises a pair of disc-shaped side plates that face each other at a predetermined distance and a plurality of blades disposed between the side plates in the radial direction of the side plates. The impeller is mounted on a hub that is fitted into an output shaft of an electric motor. The impeller is covered by a cover. The side liner and blades of the machine can be easily replaced. A side liner 3 that is U-shaped with the longer side facing downward is detachably attached to the inner side of the cover 2. The upper part of the side liner is divisible into two parts. The side liner protects the side wall of the cover 2 from the abrasives that are shot from the impeller. The side liner has a U-shaped cross section. The impeller 1 is fixed to the hub 4 by screwing a bolt 15 on the hub 4 from the inner sides of the side plates 11. The diameter of the impeller 1 is limited to be 200 mm at maximum.
摘要:
A control-cage that can concentrate the distribution of shot-blasting media, a centrifugal shot-blasting device using this control-cage, and a centrifugal shot-blasting device for throwing abrasive grains, are provided.This control-cage is used for a centrifugal shot-blasting device that rotates an impeller having a plurality of blades at high speed, and that throws shot-blasting media at an object to be processed through the opening of the control-cage by means of the blades. The control-cage is cylindrically shaped and is placed inside the impeller. The opening of the control-cage is made by cutting out the cylindrical part of it in parallel with its central axis. Also, the opening has a quadrangular shape, and has lateral walls located upstream and downstream of the direction of the rotation of the impeller. The upstream wall is made so that the angle between a plane containing the axis and the plane containing both the axis and the inner edge of the upstream wall is larger than the angle between the plane containing the axis and the plane containing both the axis and the outer edge of the upstream wall when they are measured in the direction opposite to the direction of the rotation of the impeller.
摘要:
A centrifugal projecting machine having a house, a driving device disposed at a first side of the housing with a flange, an impeller having a plurality of blades, wherein the impeller is connected to a driving shaft of the driving device with a hub, a distributor disposed in an inner cylindrical space of the impeller so that it is concentrically arranged in relation to the driving shaft, wherein the distributor has slit-like openings that are circumferentially disposed with substantially equal clearances, a control cage having an opening around a distal end for dispersing shot, wherein a proximal end surface of the control cage is connected to the second side of the housing, opposite its first side, around an opening for an intake disposed at its second side, wherein he control cage is disposed with a clearance between inner ends of the blades and an outer surface of the distributor and extends over the length of the impeller, and a nozzle connected to the second side of the housing to supply the opening for an intake with shot, wherein a supporting member is disposed at the side of the impeller to support the rotating impeller, or a rotating member for sealing is disposed between the proximal end of the distributor and the distal end of the control cage, or a bearing is disposed at the clearance between the inner periphery of the flange and an outer periphery of a hub together with damping members.
摘要:
A centrifugally projecting machine that has an improved life of its driving motor by having a reduced rotational vibration caused by a dynamic imbalance of an impeller, and that reduces maintenance by avoiding usage of liners, the machine comprising: a housing, a driving means disposed at the first side of the housing by means of a flange, an impeller having a plurality of blades, wherein the impeller is connected to a driving shaft of the driving means by means of a hub, a distributor disposed in the inner cylindrical space of the impeller so that it is concentrically arranged in relation to the driving shaft, wherein the distributor has slit-like openings that are circumferentially disposed with substantially equal clearances, a control cage having an opening around its distal end for dispersing shot, wherein the proximal end surface of the control cage is connected to the second side of the housing, opposite its first side, around an opening for an intake disposed at its second side, wherein the control cage is disposed at the clearance between the inner ends of the blades and the outer surface of the distributor and extends over the length of the impeller, and a nozzle connected to the second side of the housing to supply the opening for an intake with shot, (1) wherein a supporting member is disposed at the side of the impeller to support the rotating impeller, (2) wherein a rotating member for sealing is disposed between the proximal end of the distributor and the distal end of the control cage, and (3) wherein a bearing is disposed at the clearance between the inner periphery of the flange and an outer periphery of a hub together with damping members.
摘要:
A method and a device for easily setting a processing condition from a dent rate of a product by giving an arbitrary dent producing condition and a shotblast processing condition in a shotblasting process. The method calculates a processing time, a projection amount and a projection material speed for enabling a target dent rate to be set, from the number of dents in a predetermined dent unit area and time. The method comprises the steps of: calculating a dent unit area from a projection material hardness, a projection material particle size, a projection material speed and the hardness of a processed product; calculating the number of dents required to attain a predetermined target dent rate; and calculating a processing time from the number of dents, a projection amount, a projection material density and the projection material particle size.
摘要:
A method of eliminating information on the projection states of projection elements (P) by using an analysis model in which discharged projection elements (P) repeatedly collided with rotation blades (13) in a projection machine having rotating blades (13). The method comprises the step of determining initial conditions including information on the size and rotation of blades (13), discharging information on the projection elements (P), and information on projection elements with respect to the blades (13) the step of storing the initial conditions, a computing step of computing the position of each projection element (P), and its velocity and direction after collision with a blade (13) based on the initial conditions, and the step of estimating information on projection state based on computation results.
摘要:
A method and a device for easily setting a processing condition from a dent rate of a product by giving an arbitrary dent producing condition and a shotblast processing condition in a shotblasting process. The method calculates a processing time, a projection amount and a projection material speed for enabling a target dent rate to be set, from the number of dents in a predetermined dent unit area and time. The method comprises the steps of: calculating a dent unit area from a projection material hardness, a projection material particle size, a projection material speed and the hardness of a processed product; calculating the number of dents required to attain a predetermined target dent rate; and calculating a processing time from the number of dents, a projection amount, a projection material density and the projection material particle size.
摘要:
A method of estimating information on the projection states of projection elements (P) by using an analysis model in which discharged projection elements (P) repeatedly collided with rotation blades (13) in a projection machine having rotating blades (13). The method includes the steps of determining initial conditions including information on the size and rotation of blades (13), discharging information on the projection elements(P), and information on projection elements with respect to the blades (13) the step of storing the initial conditions, a computing step of computing the position of each projection element (P), and its velocity and direction after collision with a blade(13) based on the initial conditions, and the step of estimating information on projection state based on computation results.
摘要:
A method and a device for easily setting a processing condition from a dent rate of a product by giving an arbitrary dent producing condition and a shotblast processing condition in a shotblasting process. The method calculates a processing time, a projection amount and a projection material speed for enabling a target dent rate to be set, from the number of dents in a predetermined dent unit area and time. The method comprises the steps of: calculating a dent unit area from a projection material hardness, a projection material particle size, a projection material speed and the hardness of a processed product; calculating the number of dents required to attain a predetermined target dent rate; and calculating a processing time from the number of dents, a projection amount, a projection material density and the projection material particle size.