WO2015169143A1

WO2015169143A1 - Saw blade

Info

Publication number: WO2015169143A1
Application number: PCT/CN2015/076574
Authority: WO
Inventors: 登利⋅皮特; 舒招强
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2014-05-09
Filing date: 2015-04-14
Publication date: 2015-11-12
Also published as: CN105081463B; CN105081463A

Abstract

A saw blade (3) comprises a main body (5) and an extension portion (7) extending outwards in a radial direction of the main body (5). The main body (5) has a first and a second arc-shaped segment (9, 11) and a first connecting segment (13). The first and the second arc-shaped segment (9, 11) protrude outwards and are connected with the extension portion (7), and the first connecting segment (13) is used for connecting the first and the second arc-shaped segment (9, 11). At least one of the first and the second arc-shaped segment (9, 11) is provided with lateral saw teeth. The extension portion (7) has a first lateral side (15) connected with the first arc-shaped segment (9), a second lateral side (17) connected with the second arc-shaped segment (11), and a second connecting segment (19) that connects the first and the second lateral side (15, 17). The second connecting segment (19) is provided with positive saw teeth. The width of the extension portion (7) is smaller than that of the main body (5). Therefore, the saw teeth on the extension portion (7) can be used for making short but deep cuts by sawing, and the saw teeth on the main body (5) can be used for making long cuts by sawing, so that one saw blade can be used for different sawing tasks, the cost for manufacturing different saw blades is avoided, the trouble for replacing saw blades is avoided, and the working efficiency of an operator is improved.

Description

Saw blade

Technical field

The present invention relates to a saw blade, and more particularly to a saw blade for use on a hand-held swing power tool.

Background technique

The oscillating machine is a hand-held oscillating power tool commonly used in the industry. Its working principle is that the output shaft oscillates around the axis. Therefore, when the user installs different working heads on the output shaft, a variety of different operating functions can be realized. Common working heads include saw blades, sanding discs, scrapers, etc., which can be used for sawing, cutting, grinding, scraping, etc.

The saw blade is commonly used as a working head for swinging machines, including straight saw blades and circular saw blades. Straight saw blades are often used to saw short and deep seams, and circular saw blades are used to saw long seams. However, how to use as few saw blades as possible to meet more work needs is the trend of the development of oscillating saw blades. The existing saw blade can not meet the different needs of the user at the same time, and requires the user to be equipped with different saw blades, and is constantly replaced during the use process, which increases the cost of the user and reduces the work efficiency of the user.

Summary of the invention

The technical problem to be solved by the present invention is to provide a saw blade that can improve work efficiency.

The technical solution of the present invention is: a saw blade comprising a main body; an extending portion extending radially outward from the main body; the main body having an outwardly convex first and second arc segments connected to the extending portion; a first connecting segment of the first and second arc segments; wherein at least one of the first and second arc segments is provided with side serrations; the extension portion has the first arc segment a first side of the connection; a second side connected to the second arc segment; a second connecting section connecting the first and second sides; the second connecting section is provided with a positive sawtooth The extension has a width that is less than a width of the body.

The invention has the beneficial effects that the saw blade is provided with an extension, and the saw teeth are arranged on the extension portion, so that the saw blade can be used for sawing short and deep slits, and the main body provided with saw teeth can be sawed and cut long. Such a saw blade can perform different sawing work, thereby eliminating the cost of manufacturing different saw blades, and avoiding the trouble of replacing the saw blade and improving the operator's work efficiency.

Preferably, at least one of the first and second sides is provided with a serration.

Preferably, the second connecting section is a straight line and is perpendicular to the extending direction of the extending portion.

Preferably, the first and second sides are straight lines.

Preferably, at least one of the first and second sides is perpendicular to the second connecting segment.

Preferably, the first and second sides are respectively located on the saw blade by a straight edge and a circular arc center It is composed of a circular arc side.

Preferably, the straight edge is perpendicular to the second connecting segment.

Preferably, the second connecting segment may also be an arc, and the radius of the arc is greater than the radius of the arc of the first and second arc segments.

Preferably, the first and second sides are symmetrically disposed.

Preferably, the first and second arc segments have the same arc center.

Preferably, the first and second arc segments are symmetrically arranged.

Preferably, the first connecting section comprises a straight side parallel to the second connecting section.

Preferably, the saw blade is axisymmetric. In this way, the extension is located in the middle, and when the long slit is sawed, since there is an extension in the front in the sawing direction, all have better guiding properties and are not easy to saw.

Preferably, the positive serrations are different from the tooth shapes of the side serrations. Preferably, the positive serrations are subjected to a tooth separation treatment. The toothed saw blade has better sawing efficiency and better chip removal performance. Preferably, the splitting mode is that the serrations are alternately divided into two sides.

Another technical problem to be solved by the present invention is to provide a convenient and efficient method for using a saw blade.

The technical solution of the present invention to solve the above technical problem is: a method for using a saw blade as described above, the method comprising the following steps:

a) the positive sawtooth cuts down into the workpiece;

b) rotating the saw blade to a certain angle until the side sawtooth cuts into the workpiece;

c) Push the saw blade to cut the workpiece along the plane of the saw blade.

The beneficial effects of the invention are as follows: firstly, the positive saw teeth on the extension of the saw blade can be quickly cut in the middle position of the workpiece, and since the positive saw teeth are located at the front end of the extended portion of the saw blade, the cutting efficiency is high and the positioning is accurate. It is especially suitable for slotting in the middle part of the workpiece. When the extension is cut into a certain position, the saw blade is rotated to cut the side sawtooth into the workpiece. At this time, the saw blade can be pushed forward to cut the long groove in the middle of the workpiece. When the saw blade has a large contact area with the workpiece, the sawing efficiency at this time is high, the vibration is small, and it is not easy to cut.

DRAWINGS

The same numbers and symbols in the drawings and the description are used to represent the same or equivalent elements.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of the saw blade of the present invention mounted on an oscillating machine.

Figure 2 is a bottom plan view of the saw blade of the present invention.

among them:

1. Swing machine 3. Saw blade 5. Main body 6. Mounting department

7. Extension 9. First arc segment 11. Second arc segment 13. First connecting segment

15. First side 17. Second side 19. Second connecting section 21. Straight side

23. Arc edge

detailed description

Specific embodiments of the invention are as follows:

Referring to Figure 1, a saw blade 3 suitable for use in an oscillating machine 1 has a body 5, a mounting portion 6 and an extension 7 extending radially outwardly from the body. The saw blade 3 is coupled to the oscillating machine via the mounting portion 6. 1. The width of the extension 7 is smaller than the width of the body 5.

Referring to FIG. 2, the main body 5 includes a first arc segment 9, an outer arc segment 11, and a first connecting segment 13 connecting the first and second arc segments. The first arc segment 9 and the second arc segment 11 are connected to the extension portion 7. Moreover, at least one of the first arc segment 9 and the second arc segment 11 is provided with side serrations. In this embodiment, the first arc segment 9 and the second arc segment 11 are each provided with serrations. Preferably, the first arc segment 9 and the second arc segment 11 have the same arc center and are symmetrically arranged. Of course, it is also possible to have different arc centers.

The extension 7 comprises a first side edge 15, a second side edge 17, and a second connecting section 19 connecting the first and second side edges. The first side 15 is connected to the first arc segment 9 and the second side 17 is connected to the second arc segment 11. Preferably, the first side 15 and the second side 17 are symmetrical to each other.

Preferably, at least one of the first side edge 15 and the second side edge 17 is provided with serrations. In the embodiment, the first side edge and the second side edge 17 are provided with serrations.

The second connecting section 19 is provided with positive serrations. Preferably, the positive serrations and the side serrations have different tooth profiles. In the present embodiment, the serrations on the second connecting section 19 are subjected to a toothed process. The toothed saw blade has better sawing efficiency and better chip removal performance. Preferably, the tooth splitting mode is that the serrations are alternately divided into two sides.

In this way, the saw blade is provided with an extension, and the serration is provided on the extension so that the saw blade can be used for sawing short and deep slits, while the body provided with serration can be sawed by long slits, so that the same saw blade Different sawing operations can be completed, thereby eliminating the cost of manufacturing different saw blades, and avoiding the trouble of replacing the saw blade and improving the operator's work efficiency.

In the present embodiment, the second connecting section 19 is a straight line and is perpendicular to the extending direction of the extending portion 7. Preferably, the first connecting section 13 comprises a straight side parallel to the second connecting section 19. In the present embodiment, the first side edge 15 and the second side edge 17 are each formed by a straight edge 21 and a circular arc edge 23 whose arc center is outside the saw blade. Preferably, the straight edge 21 is perpendicular to the second connecting section 19. Of course, the first side The 15 and second side edges 17 can also be straight lines. Preferably, at least one of the first side 15 and the second side 17 is perpendicular to the second connecting section 19. Of course, the second connecting section 19 may also be an arc, and the arc radius is larger than the arc radius of the first arc segment 9 and the second arc segment 11.

Preferably, the saw blade 3 is axisymmetric. Thus, the extending portion 7 is located in the middle, and when the long slit is sawed, since the extending portion 7 is present in front of the sawing direction, it has better guiding property and is less likely to be sawn.

A method of using a saw blade 3, the method of using the saw blade 3 will now be described in detail, and the method includes the following steps:

a) the positive sawtooth cuts down into the workpiece;

c) Push the saw blade to cut the workpiece along the plane of the saw blade.

Firstly, the positive serrations on the extension of the saw blade can be quickly cut in the middle position of the workpiece. Since the positive serrations are located at the front end of the extension of the saw blade, the cutting efficiency is high and the positioning is accurate, which is particularly suitable for opening in the middle of the workpiece. Slot, when the extension is cut into a certain position, the saw blade is rotated to cut the side serration into the workpiece. At this time, the saw blade can be pushed forward to cut the long groove in the middle of the workpiece, and the contact area between the saw blade and the workpiece at this time Large, so the sawing efficiency is high at this time, the vibration is small and it is not easy to cut.

The saw blade of the present invention is not limited to the above embodiments, and the structures based on the inventive concept are all within the scope of the present invention.

Claims

A saw blade, characterized in that: the saw blade comprises a main body; an extending portion extending radially outward from the main body, the main body having an outwardly convex first and second arc segments connected to the extending portion; Connecting a first connecting segment of the first and second arc segments, wherein at least one of the first and second arc segments is provided with side serrations, and the extending portion has the first arc a first side of the segment connection; a second side connected to the second arc segment; a second connecting segment connecting the first and second sides, and the second connecting segment is provided with a positive saw tooth The width of the extension is less than the width of the body.
The saw blade according to claim 1, wherein at least one of said first and second side edges is provided with serrations.
A saw blade according to claim 1, wherein said second connecting section is straight and perpendicular to the direction in which said extension extends.
The saw blade according to claim 1, wherein the second connecting section is an arc and the radius of the arc is larger than the radius of the arc of the first and second arc segments.
The saw blade according to claim 3, wherein said first and second side edges are straight lines.
A saw blade according to claim 5, wherein at least one of said first and second sides is perpendicular to said second connecting section.
A saw blade according to claim 3, wherein said first and second side edges are each formed by a straight edge and a circular arc edge having a center of the arc outside the saw blade.
A saw blade according to claim 7, wherein said straight edge is perpendicular to said second connecting section.
The saw blade according to claim 1, wherein said first and second side edges are symmetrically disposed.
The saw blade according to claim 1, wherein said first and second arc segments have the same arc center.
The saw blade according to claim 1, wherein said first and second arc segments are symmetrically disposed.
The saw blade according to claim 3, wherein said first connecting section comprises a straight side disposed in parallel with said second connecting section.
The saw blade of claim 1 wherein said saw blade is axisymmetric.
A saw blade according to claim 1, wherein said positive serrations are different from the tooth profiles of said side serrations.
A saw blade according to claim 1 wherein said positive serrations are subjected to a toothed treatment.
A saw blade according to claim 14, wherein said tooth splitting means that the serrations are alternately divided into two sides.
A method of using a saw blade according to any of claims 1-16, characterized in that the method comprises the steps of:

a) the positive sawtooth cuts down into the workpiece;

b) rotating the saw blade to a certain angle until the side sawtooth cuts into the workpiece;

c) Push the saw blade to cut the workpiece along the plane of the saw blade.