# US 11,897,044 B2 · Cutting machine

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- Number: US 11,897,044 B2
- Document ID: US11897044B2
- Status: Granted
- Kind: B2
- Application number: 17/504,704
- Filed: 2021-10-19
- Published: 2022-06-09
- Granted: 2024-02-13
- Earliest claimed: 2020-12-08
- Assignees: Makita Corporation
- Applicants: Makita Corporation
- Inventors: Yukinori Suzuki; Toshiyuki Kani
- Web page: https://patentgrep.com/patent/US11897044B2

## CPC

- B23D 45/044: {the saw blade being adjustable according to angle of cut (B23D45/025 takes precedence)}
- B23D 45/048: {the saw blade being adjustable according to angle of cut}
- B27B 5/24: the saw blade being adjustable according to depth or angle of cut
- B27B 5/29: Details; Component parts; Accessories
- B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q)
- B27B: SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G3/08; sawing apparatus specially adapted for felling trees A01G23/091; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D51/00; machine tool frames, beds, pillars or like members, in general B23Q1/01)

## Abstract

A fine adjuster for finely adjusting the lateral tilt position of a cutting machine body has improved operability. A cutting machine includes a table, a cutting machine body, a tilting member supporting the cutting machine body in a manner laterally tiltable relative to the table, a tilting locking member, and a lever member to adjust the tilt position of the cutting machine body. The lever member includes a fulcrum coupled to the table in a manner rotatable about an axis, a load point coupled to the tilting member, and an effort point extending from the fulcrum and located at a distance from the fulcrum greater than a distance between the fulcrum and the load point.

## Claims

### Claim 1

A cutting machine, comprising:
a table on which a workpiece is placeable;
a cutting machine body vertically movable relative to the table, the cutting machine body capable of holding a blade;
a tilting body supporting the cutting machine body in a manner laterally tiltable relative to the table;
a tilting lock configured to lock the cutting machine body at a tilt position;
a lever member operable to adjust the tilt position of the cutting machine body in an unlocked state of the tilting lock, the lever member including
a fulcrum directly or indirectly coupled to the table in a manner rotatable about an axis,
a load point portion coupled to the tilting body, and
an effort point portion extending from the fulcrum and located at a distance from the fulcrum greater than a distance between the fulcrum and the load point portion; and
a tilting mount tiltably supporting the tilting body; and
an auxiliary member between the lever member and the tilting mount, the auxiliary member including an auxiliary fulcrum, an auxiliary load point portion, and an auxiliary effort point portion,
wherein one of the auxiliary fulcrum or the auxiliary load point portion is coupled to the tilting mount and another of the auxiliary fulcrum or the auxiliary load point portion is coupled to the lever member, and
wherein a distance between the auxiliary effort point portion and the auxiliary fulcrum is greater than a distance between the auxiliary load point portion and the auxiliary fulcrum.

### Claim 2 (depends on 1)

The cutting machine according to claim 1, wherein
the lever member includes
the fulcrum in a middle area of the lever member in a longitudinal direction,
the load point portion at a first end of the lever member in the longitudinal direction, and
the effort point portion at a second end of the lever member in the longitudinal direction, with the fulcrum between the load point portion and the effort point portion.

### Claim 3 (depends on 2)

The cutting machine according to claim 2, wherein
the effort point portion protrudes laterally from the fulcrum farther than a side of the tilting body and is vertically tiltable.

### Claim 4 (depends on 2)

The cutting machine according to claim 2, wherein
the tilting body has a relief, and
the fulcrum is coupled to the table through the relief.

### Claim 5 (depends on 1)

The cutting machine according to claim 1, wherein
the effort point portion protrudes laterally from the fulcrum farther than a side of the tilting body and is vertically tiltable.

### Claim 6 (depends on 5)

The cutting machine according to claim 5, wherein
the tilting body has a relief, and
the fulcrum is coupled to the table through the relief.

### Claim 7 (depends on 1)

The cutting machine according to claim 1, wherein
the auxiliary fulcrum is coupled to the tilting mount, and
the auxiliary load point portion is coupled to the effort point portion in the lever member.

### Claim 8 (depends on 7)

The cutting machine according to claim 7, wherein
the tilting body and the auxiliary member are located frontward from the lever member in a direction of a tilting axis of the tilting body.

### Claim 9 (depends on 7)

The cutting machine according to claim 7, wherein
the fulcrum and the auxiliary fulcrum each include a rotation axis, and the rotation axis of the fulcrum and the rotation axis of the auxiliary fulcrum are parallel to each other.

### Claim 10 (depends on 7)

The cutting machine according to claim 7, wherein
the tilting body has a relief, and
the fulcrum is coupled to the table through the relief.

### Claim 11 (depends on 1)

The cutting machine according to claim 1, wherein
the tilting body and the auxiliary member are located frontward from the lever member in a direction of a tilting axis of the tilting body.

### Claim 12 (depends on 11)

The cutting machine according to claim 11, wherein
the fulcrum and the auxiliary fulcrum each include a rotation axis, and the rotation axis of the fulcrum and the rotation axis of the auxiliary fulcrum are parallel to each other.

### Claim 13 (depends on 1)

The cutting machine according to claim 1, wherein
the fulcrum and the auxiliary fulcrum each include a rotation axis, and the rotation axis of the fulcrum and the rotation axis of the auxiliary fulcrum are parallel to each other.

### Claim 14 (depends on 1)

The cutting machine according to claim 1, wherein
the tilting body has a relief, and
the fulcrum is coupled to the table through the relief.

### Claim 15 (depends on 14)

The cutting machine according to claim 14, wherein
the relief includes an elongated slot along an arc having a center aligned with a tilting axis of the tilting body.

### Claim 16

A cutting machine, comprising:
a table on which a workpiece is placeable;
a cutting machine body vertically movable relative to the table, the cutting machine body capable of holding a blade;
a tilting body supporting the cutting machine body in a manner laterally tiltable relative to the table;
a tilting lock configured to lock the cutting machine body at a tilt position;
a lever member operable to adjust the tilt position of the cutting machine body in an unlocked state of the tilting lock, the lever member including
a fulcrum coupled to the table in a manner rotatable about an axis,
a load point portion coupled to the tilting body, and
an arm extending from the fulcrum;
a tilting mount tiltably supporting the tilting body; and
an auxiliary member between the lever member and the tilting mount, the auxiliary member including an auxiliary fulcrum, an auxiliary load point portion, and an auxiliary effort point portion,
wherein one of the auxiliary fulcrum or the auxiliary load point portion is coupled to the tilting mount and another of the auxiliary fulcrum or the auxiliary load point portion is coupled to the lever member, and
wherein a distance between the auxiliary effort point portion and the auxiliary fulcrum is greater than a distance between the auxiliary load point portion and the auxiliary fulcrum.
