Brush unit, a device for brush-polishing that uses the brush unit, a system for brush-polishing, and a method for brush-polishing

Patent metadata

Field	Value
Publication number	US-9597766-B2
Application number	US-201414763224-A
Country	US
Kind code	B2
Filing date	Jan 20, 2014
Priority date	Feb 5, 2013
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

The purpose of the present invention is to provide a device for brush-polishing by means of a polishing brush that rotates and revolves as in a planetary motion, wherein the conditions to polish can be easily set in accordance with the properties of the workpiece and the purposes to polish. A brush unit has a polishing brush that rotates and revolves. The brush unit includes a mechanism for driving the rotation that rotates the polishing brush and the mechanism for driving the revolution that revolves it. By adjusting the speed of the rotation by the mechanism for driving the rotation the capabilities to polish the workpiece are enhanced. By adjusting the speed of the revolution by the mechanism for driving the revolution the entire workpiece is uniformly polished.

First claim

The invention claimed is:

1. A brush unit to polish a surface of a workpiece to be polished by means of a polishing brush that rotates and revolves in a planetary motion comprising: a polishing brush, wherein tips of a plurality of bristles are exposed from a bottom of the polishing brush;
a rotating unit having
a mechanism for rotation having a rotating shaft that is connected to the polishing brush at one end, a sliding shaft, through which the rotating shaft is inserted so that the rotating shaft can be rotated, and a holder for rotation, through which the sliding shaft is slidably inserted,
a mechanism for driving the rotation that generates a force for the rotating for rotating the polishing brush about the rotating shaft,
a mechanism for transmitting the force for the rotation that transmits the force for the rotating to the rotating shaft, and a mechanism for vertically moving that moves the polishing brush toward the surface of the workpiece to be polished by means of the sliding shaft;

a revolving unit that is combined with the rotating unit, the revolving unit having
a mechanism for a revolution that rotates so as to revolve the polishing brush,
a mechanism for driving the revolution that generates a force for the revolution to revolve the polishing brush, and
a mechanism for transmitting the force for the revolution that transmits the force for the revolution to the mechanism for driving the revolution,
wherein the rotating unit further comprises a mechanism for adjusting brush feed that can adjust the brush feed to force the polishing brush against the workpiece,
wherein the revolving unit comprises
a disc-shaped revolving plate that is located at an outer side of the center of the brush unit, wherein the revolving olate engages the mechanism for rotation to allow the mechanism for rotation to swing, and
a mechanism for controlling an angle to swing that controls the angle that the mechanism for rotation swings.

2. A brush unit to polish a surface of a workpiece to be polished by means of a polishing brush that rotates and revolves in a planetary motion comprising:
a polishing brush, wherein tips of a plurality of bristles are exposed from a bottom of the polishing brush;
a rotating unit having
a mechanism for rotation having a rotating shaft that is connected to the polishing brush at one end, a sliding shaft, through which the rotating shaft is inserted so that the rotating shaft can be rotated, and a holder for rotation, through which the sliding shaft is slidably inserted,
a mechanism for driving the rotation that generates a force for the rotating for rotating the polishing brush about the rotating shaft,
a mechanism for transmitting the force for the rotation that transmits the force for the rotating to the rotating shaft, and a mechanism for vertically moving that moves the polishing brush toward the surface of the workpiece to be polished by means of the sliding shaft;

a revolving unit that is combined with the rotating unit, the revolving unit having
a mechanism for a revolution that rotates so as to revolve the polishing brush,
a mechanism for driving the revolution that generates a force for the revolution to revolve the polishing brush, and
a mechanism for transmitting the force for the revolution that transmits the force for the revolution to the mechanism for driving the revolution,
wherein the rotating unit comprises a plurality of the polishing brushes that are fixed to respective secondary rotating shafts at their ends, the other ends of the secondary rotating shafts being combined with a secondary mechanism for transmitting the force for the rotation that transmits the force for the rotating from the end of the rotating shaft, wherein a plurality of polishing brushes are connected to the rotating shaft,
wherein the holder for rotation is held by the mechanism for the revolution so that the axial center of the mechanism for the revolution is consistent with the axial center of the rotating shaft.

3. The brush unit of claim 1 , wherein the polishing brush is a segmented brush that holds a plurality of polishing tools by a tool for fixing the bristles, the polishing tools being made by bundling up a plurality of bristles and fixing one end of the bundle to the polishing tool for fixing the bristles.

4. The brush unit of claim 1 , wherein the bristles are made of a monofilament that is made from a nylon resin that includes abrasive grains having grain sizes of F54 to F240 or #240 to #1000.

5. A device for brush-polishing that comprises the brush unit of claim 1 and a mechanism for transporting the workpiece that transports the workpiece under the polishing brush, wherein the mechanism for transporting the workpiece is a turntable that has areas for placing the workpiece and intermittently and horizontally turns to transport the workpiece to the position under the polishing brush.

6. A device for brush-polishing that comprises the brush unit of claim 1 and a mechanism for transporting the workpiece that transports the workpiece under the polishing brush, wherein the mechanism for transporting the workpiece is a conveyor belt that continuously and linearly transports the workpiece under the polishing brush.

7. A system for brush-polishing that polishes both a first surface, and a second surface that is opposite the first surface, of a workpiece, the system comprising: a first device for brush-polishing that polishes the first surface, which device is defined in claim 6 ; a second device for brush-polishing that polishes the second surface, which device is defined in claim 6 ; and an intermediate mechanism for transporting the workpiece that transports the workpiece from the first device for brush-polishing to the second device for brush-polishing; wherein the system further comprises a mechanism for turning over the workpiece at the end of the mechanism for transporting the workpiece in a direction that the workpiece is transported.

8. A system for brush-polishing that polishes both a first surface, and a second surface that is opposite the first surface, of a workpiece, the system comprising: a first brush unit that polishes the first surface, which unit is defined in claim 1 ; a second brush unit that polishes the second surface, which unit is defined in claim 1 ; a mechanism for transporting the workpiece that has the areas for placing the workpiece and intermittently turns to transport the workpiece under the polishing brush; and a mechanism for turning over the workpiece, which mechanism is located between the first brush unit and the second brush unit on the path of the workpiece.

9. A method for brush-polishing that uses the brush unit of claim the method comprising the steps of: rotating the polishing brush; revolving the polishing brush; polishing a surface of a workpiece to be polished by contacting the polishing brush that rotates and revolves with the workpiece; and separately adjusting a speed of the rotation and a speed of the revolution of the polishing brush.

10. The brush unit of claim 2 , wherein the polishing brush is a segmented brush that holds a plurality of polishing tools by a tool for fixing the bristles, the polishing tools being made by bundling up a plurality of bristles and fixing one end of the bundle to the polishing tool for fixing the bristles.

11. The brush unit of claim 2 , wherein the bristles are made of a monofilament that is made from a nylon resin that includes abrasive grains having grain sizes of F54 to F240 or #240 to #1000.

12. A device for brush-polishing that comprises the brush unit of claim 2 and a mechanism for transporting the workpiece that transports the workpiece under the polishi

Assignees

• Sintokogio Ltd

Inventors

• Hayashi Tsuguhito
• Hiratsuka Youichiro
• Tanahashi Shigeru

Classifications

• B24B41/005

  Feeding or manipulating devices specially adapted to grinding machines (feeding, loading or unloading work specially adapted to lapping machines B24B37/345) · CPC title

• B24B9/002

  for travelling workpieces · CPC title

• B24B27/0069

  with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means (see also B24B27/0023, B24B7/16) · CPC title

• B24B27/0023 Primary

  grinding machines with a plurality of working posts · CPC title

• B24B9/00

  Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor (B24B21/00 takes precedence; for sharpening cutting edges on tools B24B3/00; removing burrs by loose abrasive material B24B31/00) · CPC title