Bevel saws and methods of adjusting a fence of a bevel saw

Patent metadata

Field	Value
Publication number	US-2024091977-A1
Application number	US-202318466080-A
Country	US
Kind code	A1
Filing date	Sep 13, 2023
Priority date	Sep 15, 2022
Publication date	Mar 21, 2024
Grant date	—

Abstract

Bevel saws and methods of adjusting a fence of a bevel saw are disclosed herein. The bevel saws include a workpiece support that defines a workpiece support surface. The bevel saws also include a user-actuated assembly and an assembly attachment structure that operatively attaches the user-actuated assembly to the workpiece support. The assembly attachment structure includes a blade bevel angle adjustment mechanism configured to adjust a blade bevel angle of the bevel saw blade. The bevel saws also include a fence that defines a fence surface that extends away from the workpiece support surface. The fence includes a first fence region and a second fence region. The first fence region and the second fence region define a blade-receiving gap therebetween, and the fence further includes a gap adjustment mechanism configured to automatically adjust the blade-receiving gap based, at least in part, on the blade bevel angle.

First claim

1 . A bevel saw configured to form a bevel cut in a workpiece, the bevel saw comprising:
a workpiece support that defines a workpiece support surface configured to support a first side of the workpiece; a user-actuated assembly that includes a motor including a motor shaft configured to rotate about a shaft rotational axis and an arbor operatively attached to the motor shaft and configured to receive a bevel saw blade; an assembly attachment structure that operatively attaches the user-actuated assembly to the workpiece support and is configured to permit constrained motion of the user-actuated assembly relative to the workpiece support surface, wherein the assembly attachment structure includes a blade bevel angle adjustment mechanism configured to adjust a blade bevel angle of the bevel saw blade relative to the workpiece support surface; and a fence that defines a fence surface that extends away from the workpiece support surface and is configured to support a second side of the workpiece, wherein the fence includes a first fence region and a second fence region, wherein the first fence region and the second fence region define a blade-receiving gap therebetween, wherein the blade-receiving gap is configured to receive the bevel saw blade during operative use of the bevel saw to form the bevel cut in the workpiece, and further wherein the fence includes a gap adjustment mechanism configured to automatically adjust the blade-receiving gap based, at least in part, on the blade bevel angle.

2 . The bevel saw of claim 1 , wherein the gap adjustment mechanism is configured to adjust the blade-receiving gap within a bevel angle plane that extends at least one of parallel to the fence surface and perpendicular to the workpiece support surface, and/or
wherein the gap adjustment mechanism is configured to at least one of: (i) change a shape of the blade-receiving gap; and (ii) change a gap bevel angle of the blade-receiving gap.

3 . The bevel saw of claim 1 , wherein the gap adjustment mechanism includes a linkage that is operatively interconnected to the blade bevel angle adjustment mechanism, and further wherein, responsive to adjustment of the blade bevel angle via the blade bevel angle adjustment mechanism, the linkage is configured to apply a motive force that adjusts the blade-receiving gap to a corresponding gap bevel angle.

4 . The bevel saw of claim 3 , wherein the linkage is configured such that the gap adjustment mechanism automatically adjusts the blade-receiving gap responsive to adjustment of the blade bevel angle by the blade bevel angle adjustment mechanism.

5 . The bevel saw of claim 1 , wherein the gap adjustment mechanism includes an electric gap adjustment actuator configured to automatically adjust the blade-receiving gap based, at least in part, on the blade bevel angle.

6 . The bevel saw of claim 5 , wherein the gap adjustment mechanism further includes a blade bevel angle detector configured to detect the blade bevel angle and to generate a blade bevel angle output that is indicative of the blade bevel angle, and further wherein the electric gap adjustment actuator is configured to adjust the blade-receiving gap based, at least in part, on the blade bevel angle output, and/or
wherein the gap adjustment mechanism further includes a blade miter angle detector configured to detect a blade miter angle and to generate a blade miter angle output that is indicative of the blade miter angle, and further wherein the electric gap adjustment actuator is configured to adjust the blade-receiving gap based, at least in part, on the blade miter angle output, and/or wherein the gap adjustment mechanism further includes a blade distance sensor configured to detect a blade-fence distance between the bevel saw blade and the fence and to generate a blade distance output that is indicative of the distance between the bevel saw blade and the fence, and further wherein the electric gap adjustment actuator is configured to adjust the blade-receiving gap based, at least in part, on the distance between the bevel saw blade and the fence, and/or wherein the blade bevel angle adjustment mechanism includes at least one first fence region translational element, and further wherein the electric gap adjustment actuator is configured to operatively translate the at least one first fence region translational element relative to the workpiece support surface.

7 . The bevel saw of claim 1 , wherein the fence surface includes a first fence surface, which is defined by the first fence region, and a second fence surface, which is defined by the second fence region.

8 . The bevel saw of claim 7 , wherein the first fence region includes a plurality of first fence region translational elements configured to operatively translate, relative to the workpiece support surface and responsive to actuation of the blade bevel angle adjustment mechanism, to selectively adjust the blade-receiving gap.

9 . The bevel saw of claim 8 , wherein the second fence region includes a plurality of second fence region translational elements configured to operatively translate, relative to the workpiece support surface and responsive to actuation of the blade bevel angle adjustment mechanism, to selectively adjust the blade-receiving gap.

10 . The bevel saw of claim 9 , wherein a second translation axis of the plurality of second fence region translational elements of the second fence region is parallel to a first translation axis of the plurality of first fence region translational elements of the first fence region.

11 . The bevel saw of claim 9 , wherein the plurality of second fence region translational elements and the plurality of first fence region translational elements are arranged in corresponding translational element pairs, and further wherein the gap adjustment mechanism is configured to at least one of:
(i) translate each corresponding pair in the same direction; and (ii) translate each corresponding pair by at least substantially the same distance.

12 . The bevel saw of claim 9 , wherein the gap adjustment mechanism is configured to concurrently translate both the plurality of second fence region translational elements and the plurality of first fence region translational elements.

13 . The bevel saw of claim 12 , wherein the plurality of first fence region translational elements and the plurality of second fence region translational elements are translated
(i) in the same direction or in opposite directions; and/or (ii) by the same distance or by different distances.

14 . The bevel saw of claim 9 , wherein the plurality of second fence region translational elements and the plurality of first fence region translational elements are arranged in corresponding translational element pairs, and further wherein the gap adjustment mechanism is configured to at least one of:
(i) translate each corresponding pair in the same, or at least substantially the same, direction; and (ii) translate each corresponding pair by the same, or at least substantially the same, distance.

15 . The bevel saw of claim 7 , wherein the first fence region includes a first fence region rotary element configured to operatively rotate, relative to the workpiece support surface and responsive to actuation of the blade bevel angle adjustment mechanism, to selectively adjust the blade-receiving gap.

16 . The bevel saw of claim 15 , wherein the first fence region further includes a first fence region stationary element that is distal the blade-receiving gap relative to the first fence region rotary element, and/or
wherein the first fence reg

Assignees

• Festool Gmbh

Inventors

• Frank Josua
• Schock Christian
• Sdrzallek Andreas
• Brennenstuhl Felix
• Brehm Benjamin

Classifications

• B23D45/14

  for cutting otherwise than in a plane perpendicular to the axis of the stock, e.g. for making a mitred cut · CPC title

• B23D47/00 Primary

  Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts (constructional features of these parts per se B23Q; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title

• B27B27/10 Primary

  Devices for moving or adjusting the guide fences or stops · CPC title

• B27B5/24

  the saw blade being adjustable according to depth or angle of cut · CPC title

• B27B27/06

  arranged angularly with respect to the plane of the saw blade, e.g. for mitring {(devices for mitring wood B27G5/00)} · CPC title