Ring-shaped band saw blade manufacturing method and manufacturing apparatus

Patent metadata

Field	Value
Publication number	US-11607739-B2
Application number	US-201916972720-A
Country	US
Kind code	B2
Filing date	Jun 3, 2019
Priority date	Jun 8, 2018
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

A ring forming step includes welding opposite ends of a band saw blade including a body part having a band shape, and a tooth part including a plurality of teeth formed on one side part of the body part, to form a ring shape. A polishing step includes polishing an inner surface, an outer surface, and an end face on a side opposite to the tooth part in the ring-shaped band saw blade subjected to the ring formation. A tip tooth tip forming step includes positioning, after the polishing step, the ring-shaped band saw blade subjected to the ring formation by use of one of the inner surface and the outer surface, and the end face as references, joining a cutting tip to tooth tips of the plurality of teeth by welding, and polishing the joined cutting tip to form a tooth tip shape.

First claim

The invention claimed is:

1. A manufacturing method of a ring-shaped band saw blade, the manufacturing method comprising:
a ring forming step of welding opposite ends of a band saw blade including a body part having a band shape, and a tooth part including a plurality of teeth formed on one side part of the body part, to form a ring shape;
a polishing step of polishing an inner surface, an outer surface, and an end face of the body part on a side opposite to the tooth part in the ring-shaped band saw blade to form positional references; and
a tip tooth tip forming step of positioning, after the polishing step, the ring-shaped band saw blade by use of one of the positional references, joining a cutting tip to one or more respective tooth tips of the plurality of teeth by welding, and polishing the joined cutting tip to form a tooth tip shape.

2. The manufacturing method of the ring-shaped band saw blade according to claim 1 , wherein in the polishing step, round grindstones are rotated and urged to polish the inner surface and the outer surface, respectively, while rotatory moving of the ring-shaped band saw blade is performed.

3. The manufacturing method of the ring-shaped band saw blade according to claim 2 , wherein the rotatory moving of the body part of the ring-shaped band saw blade is performed in a rear side to a front side direction, and wherein a grindstone that polishes the end face is disposed on one of the front side and the rear side of the round grindstones,
wherein a rotation axis of the round grindstones is inclined toward the one of the front side and the rear side and is positioned in a center of the body part in a width direction of the body part, and
a rotating direction of the round grindstones is set so that the round grindstones rotate in a polishing direction from the tooth part toward the end face in the width direction of the body part.

Assignees

• Amada Co Ltd
• Amada Machinery Co Ltd

Inventors

• Maeda Kensaku

Classifications

• B24B7/12

  for grinding travelling elongated stock, e.g. strip-shaped work · CPC title

• B23K2101/20

  Tools · CPC title

• B24B3/36

  of cutting blades (B24B3/58 takes precedence) · CPC title

• B23K11/087

  for rectilinear seams · CPC title

• B23K11/16

  taking account of the properties of the material to be welded · CPC title