Shot peening device and shot peening method

Patent metadata

Field	Value
Publication number	US-9776301-B2
Application number	US-201214373460-A
Country	US
Kind code	B2
Filing date	Oct 31, 2012
Priority date	Feb 13, 2012
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A plurality of rotatable small table are disposed on a rotatable large table, and a workpiece is mounted on the small tables. Above a projection range in the large table, a pressing part is provided. The pressing part is elevated and lowered by an elevating/lowering mechanism between a withdrawn position spaced above the workpiece on the small table and a pressing position for pressing the workpiece on the small table from above. Also, the pressing part is rotationally driven coaxially with a rotary shaft of the small table and in the same rotating direction and at the same rotating speed as the small table, by a third drive mechanism.

First claim

The invention claimed is:

1. A shot processing device comprising:
a projector configured to project a projection material to a workpiece;
a rotatable first rotary table which is disposed at a position including a projection range where the projection material is projected by the projector and a non-projection range outside the projection range;
a first drive mechanism configured to rotationally drive the first rotary table;
a plurality of second rotary tables which are disposed on the first rotary table and include a rotary shaft parallel to a rotary shaft of the first rotary table to be rotatable, and on which the workpiece is mounted;
a second drive mechanism configured to rotationally drive the second rotary table;
a pressing part which is provided above the projection range on the first rotary table, and configured to move up and down between a withdrawn position spaced above the workpiece on the second rotary table and a pressing position for pressing the workpiece on the second rotary table from above;
an elevating/lowering mechanism configured to elevate and lower the pressing part;
a third drive mechanism configured to rotationally drive the pressing part coaxially with the rotary shaft of the second rotary table and in the same rotating direction and at the same rotating speed as the second rotary table;
a partition part provided on the first rotary table;
five processing chambers defined by the partition part and arranged in a circumferential direction of the first rotary table; and
a liner provided in each of five processing chambers,
wherein
the partition part includes a center wall and five partition walls,
the center wall constructs a pentagonal prism shaped in a cylinder, the pentagonal prism contains the rotary axis of the first rotary table, an axis of the pentagonal prism is coaxial with the rotation axis of the first rotary table,
each of the partition walls extends in the radial direction from a bus bar of the pentagonal prism to an edge of the first rotary table and includes a forked distal end,
each of the five processing chambers moves along the circumferential direction of the first rotary table in accordance with the rotation of the first rotary table, and sequentially changes into a carry-in chamber, a carry-in side seal chamber, a projection chamber, a carry-out side seal chamber, and a carry-out chamber,
the processing chamber that changed to the carry-in chamber and the processing chamber that changed to the carry-out chamber are adjoined,
the processing chamber that changed to the carry-in side seal chamber is placed between the processing chamber that changed to the carry-in chamber and the processing chamber that changed to the projection chamber,
the process chamber that changed to the carry-out side seal chamber is placed between the processing chamber that changed to the projection chamber and the processing chamber that changed to the carry-out chamber,
the liner includes a first shield and a second shield,
the first shield is provided between the side wall of the pentagonal prism and the second rotary table, and the first shield is parallel to the side wall of the pentagonal prism, and
the second shield is provided between the partition part and the second rotary table, and the second shield is parallel to the partition part.

2. The shot processing device according to claim 1 , wherein the elevating/lowering mechanism includes a servo cylinder.

3. The shot processing device according to claim 1 , wherein the third drive mechanism rotationally drives the pressing part continuously in states including the state where the workpiece is disposed in the projection range and the pressing part is lowered in a direction from the withdrawn position to the pressing position, the state where the workpiece is disposed in the; projection range and the pressing part is disposed at the pressing position, and the state where the workpiece is disposed in the projection range and the pressing part is elevated in a direction from the pressing position to the withdrawn position.

4. The shot processing device according to claim 1 , wherein
above the second rotary table, a pressing shaft to a lower end of which the pressing part is fixed and which constitutes a part of the elevating/lowering mechanism is disposed coaxially with the rotary shaft of the second rotary table, and
the pressing shaft is constituted by connecting a plurality of shafts in series and has a detachable distal end shaft for fixing the pressing part on a lower part of the pressing shaft.

5. The shot processing device according to claim 1 , wherein
the first drive mechanism includes an index device, the second drive mechanism includes a drive motor for the second drive mechanism, the third drive mechanism includes a drive motor for the third drive mechanism, and
the index device, the drive motor for the second drive mechanism, and the drive motor for the third drive mechanism are all disposed above a device ceiling part.

6. The shot processing device according to claim 1 , further including a blowing device configured to blow air to the workpiece in the processing chamber.

7. A shot processing method for the shot processing device according to the claim 1 , comprising:
a mounting step of mounting a workpiece on a second rotary table which is disposed on a rotatable first rotary table and includes a rotary shaft parallel to a rotary shaft of the first rotary table to be rotatable;
a rotating step of rotationally driving the first rotary table about the rotary shaft of the first rotary table and rotationally driving the second rotary table about the rotary shaft of the second rotary table at least in a projection range where a projection material is projected, after the mounting step;
a pressing step of pressing the workpiece from above after the rotating step, by a pressing part rotationally driven coaxially with the rotary shaft of the second rotary table and in the same rotating direction and at the same rotation speed as the second rotary table; and
a projecting step of projecting the projection material to the workpiece, after the pressing step.

8. The shot processing device according to claim 2 , wherein the third drive mechanism rotationally drives the pressing part continuously in states including the state where the workpiece is disposed in the projection range and the pressing part is lowered in a direction from the withdrawn position to the pressing position, the state where the workpiece is disposed in the projection range and the pressing part is disposed at the pressing position, and the state where the workpiece is disposed in the projection range and the pressing part is elevated in a direction from the pressing position to the withdrawn position.

9. The shot processing device according to claim 2 , wherein
above the second rotary table, a pressing shaft to a lower end of which the pressing part is fixed and which constitutes a part of the elevating/lowering mechanism is disposed coaxially with the rotary shaft of the second rotary table, and
the pressing shaft is constituted by connecting a plurality of shafts in series and has a detachable distal end shaft for fixing the pressing part on a lower part of the pressing shaft.

10. The shot processing device according to claim 3 , wherein
above the second rotary table, a pressing shaft to a lower end of which the pressing part is fixed and which constitutes a part of the elevating/lowering mechanism is disposed coaxially with the rotary shaft of the second rotary table, and
the pressing shaft is constituted by connecting a plurality of shafts in series and has a detachable distal end shaft for fixing the pressing part on a lower part

Assignees

• Sintokogio Ltd

Inventors

• Yamamoto Masatoshi

Classifications

• B24C3/24

  Apparatus using impellers · CPC title

• B21D31/06

  Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating, peen forming (forging hammers B21J7/00) · CPC title

• B24C9/00

  Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material · CPC title

• B24C1/00

  Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods · CPC title

• B24C3/08

  essentially adapted for abrasive blasting of travelling stock or travelling workpieces · CPC title