Anti-vibration method of band saw blade in band saw machine and anti-vibration arrangement

Patent metadata

Field	Value
Publication number	US-10363618-B2
Application number	US-201515315949-A
Country	US
Kind code	B2
Filing date	Jun 8, 2015
Priority date	Jun 19, 2014
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

An anti-vibration arrangement for a band saw blade in a band saw machine, which is constructed to cut a workpiece by shifting the endless band saw blade running in a circulating manner to a cutting direction, wherein nozzles are provided for injecting high-pressure cutting liquid toward each side face of the body of the band saw blade on the entering-side where the band saw blade enters into a cut groove of the workpiece formed by the band saw blade in the cutting process of the band saw machine.

First claim

The invention claimed is:

1. An anti-vibration method of a band saw blade in a band saw machine, which is configured to cut a workpiece by shifting an endless band saw blade running in a circulating manner to a cutting direction, the anti-vibration method comprising:
providing a blade guide that movably guides the band saw blade and mounting a pair of nozzles on the blade guide, the blade guide being slidable with respect to the workpiece so as to move the nozzles to a position proximate a cut groove of the workpiece and inject a jetted high-pressure liquid into the cut groove at the proximate position; and
injecting the jetted high-pressure liquid in a range of 1-10 mpa from the nozzles:
toward each side face of a body of the band saw blade upon an entering-side where the band saw blade enters into the cut groove of the workpiece formed by the band saw blade in a cutting process;
toward the bottom of gullets, which are defined by spaces between adjacent saw teeth of the body of the band saw blade; and
toward a nearby area of the body of the band saw blade;
suppressing vibration of the band saw blade,
wherein the jetted high-pressure liquid is injected within gaps between the side faces of the band saw blade and cut faces of the workpiece and is introduced into the cut groove of the workpiece during the cutting process,
the jetted high-pressure liquid hitting the side faces of the band saw blade to provide a collision force that sandwiches the band saw blade so as to suppress vibration of the band saw blade; and
wherein the nozzles are orientated in a plane that both extends in the cutting direction and also extends in a direction perpendicular to the side faces of the band saw blade, and
wherein entire outlet openings of the nozzles are positioned below a midpoint of a height of the band saw blade such that the jetted high-pressure liquid is concentrated at a lower end of the band saw blade, the height of the band saw blade being in a direction that is perpendicular to the plane in which the nozzles are oriented.

2. The anti-vibration method of the band saw blade in the band saw machine according to claim 1 , wherein the injecting of the jetted high-pressure liquid includes injecting the jetted high-pressure liquid toward each side face of the body of the band saw blade at least at an inclination angle in which the jetted high-pressure liquid has a collision pressure component in a direction perpendicular to the side faces of the body.

3. The anti-vibration method of the band saw blade in the band saw machine according to claim 1 , wherein the injecting of the jetted high-pressure liquid includes injecting the jetted high-pressure liquid toward each side face of the body of the band saw blade at least at an inclination angle in which the jetted high-pressure liquid has a pressure component in a running direction of the band saw blade.

4. The anti-vibration method of the band saw blade in the band saw machine according to claim 1 , wherein the injecting of the jetted high-pressure liquid includes injecting the jetted high-pressure liquid toward each side face of the body of the band saw blade at an inclination angle in which the jetted high-pressure liquid has collision pressure components in a direction perpendicular to the side faces of the body and in a running direction of the band saw blade.

5. The anti-vibration method of the band saw blade in the band saw machine according to claim 1 , wherein the jetted high-pressure liquid is a cutting oil.

6. The anti-vibration method of the band saw blade in the band saw machine according to claim 1 , wherein the injecting of the jetted high-pressure liquid includes increasing a pressure of the jetted high-pressure liquid within the cut groove due to circulation of the band saw blade such that side walls of the cut groove exert a reaction force on the side walls of the band saw blade, via the jetted high-pressure liquid, along an entire cutting length of the band saw blade.

7. An anti-vibration arrangement for a band saw blade in a band saw machine, which is configured to cut a workpiece by shifting an endless band saw blade running in a circulating manner to a cutting direction, the anti-vibration arrangement comprising:
a blade guide that movably guides the band saw blade;
nozzles mounted on the blade guide, wherein the blade guide is configured to slide with respect to the workpiece so as to move the nozzles to a position proximate a cut groove of the workpiece and inject a jetted high-pressure liquid into the cut groove at the proximate position; and
the nozzles injecting the jetted high-pressure liquid in a range 1-10 mpa:
toward each side face of a body of the band saw blade on an entering-side where the band saw blade enters into a cut groove of the workpiece provided by the band saw blade in a cutting process of the band saw machine;
toward the bottom of gullets, which are defined by spaces between adjacent saw teeth of the body of the band saw blade; and
toward a nearby area of the body of the band saw blade, wherein the anti-vibration arrangement is configured to suppress vibration of the band saw blade via injection of the jetted high-pressure liquid within gaps between the side faces of the band saw blade and cut faces of the workpiece and into the cut groove of the workpiece during the cutting process,
the jetted high-pressure liquid hitting the side faces of the band saw blade to provide a collision force that sandwiches the band saw blade so as to suppress vibration of the band saw blade; and wherein
the nozzles are orientated in a plane that both extends in the cutting direction and also extends in a direction perpendicular to the side faces of the band saw blade, and
wherein entire outlet openings of the nozzles are positioned below a midpoint of a height of the band saw blade such that the jetted high-pressure liquid is concentrated at a lower end of the band saw blade, the height of the band saw blade being in a direction that is perpendicular to the plane in which the nozzles are oriented.

8. The arrangement for the band saw blade in the band saw machine according to claim 7 , wherein the nozzles are arranged such that the jetted high-pressure liquid injects toward each side face of the body of the band saw blade at an inclination angle in which the jetted high-pressure liquid has collision pressure components in a direction perpendicular to the side faces of the body and along a running direction of the band saw blade.

9. The arrangement for the band saw blade in the band saw machine according to claim 7 , wherein
the blade guide is configured to movably support a cutting edge of the band saw blade, which is oriented to the workpiece at an entering-side and a leaving-side of the cut groove of the workpiece, and
the nozzles are disposed on the blade guide at the entering side.

10. The arrangement for the band saw blade in the band saw machine according to claim 7 , wherein the nozzles are configured to inject the jetted high-pressure liquid such that a pressure of the jetted high-pressure liquid increases within the cut groove due to circulation of the band saw blade and such that side walls of the cut groove exert a reaction force on the side walls of the band saw blade, via the jetted high-pressure liquid, along an entire cutting length of the band saw blade.

11. An anti-vibration method of a band saw blade in a band saw machine, which is configured to cut a workpiece by shifting an endless band saw blade running in a circulating manner to a cutting direction, the anti-vibration method comprising:
injecting a high-pressure liquid in a range of 1-10 mpa from a pair of nozzles:
toward each side face of a body of the ban

Assignees

• Amada Holdings Co Ltd
• Amada Machine Tools Co Ltd

Inventors

• Kitai Masataka

Classifications

• B27B13/16

  Accessories, e.g. for cooling the saw blade · CPC title

• B23D59/04 Primary

  Devices for lubricating or cooling straight or strap saw blades · CPC title

• B27B13/12

  Lubricating devices specially designed for band saw blades · CPC title

• B23D55/005

  Devices for damping vibrations · CPC title

• B23Q11/10

  Arrangements for cooling or lubricating tools or work · CPC title