CN212761509U - Bimetal grinding band saw blade - Google Patents

Abstract

The utility model discloses a bimetal mill way area saw blade, including the saw blade body, and set up multiunit sawtooth group on the saw blade body, every group sawtooth is organized including at least one first sawtooth, the tip width of first sawtooth is greater than the width of saw blade body on saw blade thickness direction, the tip of first sawtooth are equipped with the chamfer in width to both sides, just at least one side of first sawtooth is the inclined plane of acute angle. The saw blade saw cuts the face and is polished smooth and level, and the kerf is less and advance high, but the greatly reduced saw cuts the surplus, and saw blade prong wearing and tearing are slow, long service life.

Description

Bimetal grinding band saw blade

Technical Field

The utility model relates to a band saw blade especially relates to a bimetal grinds way band saw blade.

Background

When the saw blade is produced, in order to improve the cutting capability of the saw blade and prevent the saw from being clamped, the width of the cutting edge of the saw blade is larger than that of the back part of the saw blade.

Currently, there are two ways to achieve a blade edge that is wider than the back of the blade. One is a shunt (also called a split tooth), that is, one or more fixed teeth are usually arranged in one group of teeth during the shunt, and other teeth have a little inclination relative to the fixed teeth and are staggered left and right; the other type is a grinding path, namely the cutting edge of the saw blade is wider than the back of the saw blade after being ground, and the saw path is formed by grinding. The saw path is the measurement value of the widest position of the blade edge of the saw blade, namely the width of a gap cut when the workpiece is sawn.

As shown in fig. 1-4, the saw blade body 101 and the saw teeth 102 are made of different metal materials, and when grinding teeth, no matter whether equal teeth (equal ABCDE value) or variable teeth (unequal ABCDE value), a group of pitches F includes a plurality of teeth (including a fixed tooth 104 and a plurality of sub-teeth 105) with different grinding manners. The teeth with the chamfer 103 on the back corner surface of the tooth material are distributed in one group of teeth, the shape is like the tooth material in a G view, and the shape is like the tooth material in an H view, but the side corner surfaces of the two tooth materials in the grinding form are both ground to be flat with the strap. The final group of tooth forms also consists of tooth materials of GH two different tooth grinding modes, the number of the tooth forms is different according to different cutting requirements, for example, 1G form 4H forms form one group of teeth or 1G form 2H forms one group of teeth, and the like. When teeth are divided, as shown in a view I, the teeth with chamfers are used as fixed teeth, the teeth without chamfers are used as divided teeth, and the teeth are divided according to the distribution of tooth materials of different tooth grinding modes, such as 1 division by 4 or 1 division by 2. The existing bimetallic band saw blades are formed by cyclically arranging a considerable number of such forms of teeth at once.

In the prior art, a patent application with publication number CN 110480095a provides a band saw blade, which includes a saw blade body and saw teeth, wherein the saw teeth are repeatedly arranged according to a plurality of main cycles, the main cycles follow the arrangement rule of a plurality of tooth division sub-cycles, each tooth division sub-cycle includes N +1 teeth, the nth tooth is a tooth division type, and the N +1 is a non-tooth division type; in addition, patent application publication No. CN 110202209a also provides a band saw blade, which also adopts a branched saw tooth structure.

The main drawbacks of the above band saw blade are:

(1) the saw gap for sawing is large, and the material waste is relatively serious;

(2) when the band saw blade is used for sawing, the tooth tips separated by teeth are easy to wear, so that the service life is short, and the teeth are easy to break or collapse due to workpiece collision in the sawing process;

(3) such band saw blades have poor cutting efficiency.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a bimetal grinds way area saw blade.

The specific technical scheme of the application is as follows:

a bimetal grinding band saw blade comprises a saw blade body and a plurality of groups of saw tooth groups arranged on the saw blade body,

each group of saw teeth comprises at least one first saw tooth, the width of the edge end of each first saw tooth is larger than the width of the saw blade body in the thickness direction of the saw blade, chamfers are arranged on the two sides of the edge end of each first saw tooth in the width direction, and at least one side surface of each first saw tooth is an acute inclined surface.

The same saw tooth group is provided with three, four or more than four saw teeth with different shapes, wherein at least one first saw tooth of the tooth shape adopts a grinding path, the saw cutting surface of the saw blade is smooth and flat, the saw gap is smaller and higher, and the saw cutting allowance can be greatly reduced.

Preferably, each group of saw teeth comprises at least three first saw teeth, and the chamfer angle on two sides of the edge end of each first saw tooth is different in size.

In another aspect, the saw tooth group may be formed by a plurality of first saw teeth, but the chamfer angle on both sides of the edge end of each first saw tooth is different in size.

Preferably, each group of saw teeth also comprises at least one second saw tooth, and the edge width of the second saw tooth is larger than the width of the saw blade body in the thickness direction of the saw blade; in the height direction of the saw blade, two side surfaces of the second saw teeth are respectively provided with M degrees and N degrees of front side angles relative to the saw blade body.

In another scheme, each group of saw tooth group consists of first saw teeth and second saw teeth, the number of each type of saw teeth can be specifically set according to needs, chamfers are arranged on two sides of the edge end of the first saw teeth, chamfers are not arranged on two sides of the edge end of the second saw teeth, the second saw teeth protrude relative to the saw blade body, and M degrees and N degrees of forward inclination are formed between the protruding side face and the saw blade body (saw band).

Preferably, the two side surfaces of the second saw tooth have rear side angles of Q DEG and P DEG with respect to the saw blade body in the length direction of the saw blade.

Preferably, the values of M and N are not more than 10, and the values are the same or different; the values of Q and P are not more than 5 and are the same or different.

Preferably, each group of saw teeth further comprises at least one third saw tooth, the width of the edge end of each third saw tooth is larger than the width of the saw blade body in the thickness direction of the saw blade, a chamfer is arranged on one side of the edge end of each third saw tooth in the width direction, and at least one side surface of each third saw tooth is an acute-angled inclined surface.

In another scheme, each group of sawtooth groups consists of a first sawtooth, a second sawtooth and a third sawtooth, namely, the sawtooth comprises three types of sawtooth; wherein, the edge end side of the third sawtooth is provided with a chamfer which can be one or more.

Preferably, each group of saw teeth comprises at least two third saw teeth, the chamfer is arranged on the same side of each third saw tooth, and the chamfer on each third saw tooth has different size.

Preferably, each group of saw teeth comprises at least two third saw teeth, chamfers are respectively arranged on two sides of the two third saw teeth, and the chamfers are the same or different in size.

Preferably, one side surface of the first sawtooth in the thickness direction of the saw blade is an acute inclined plane, and the other side surface of the first sawtooth is a plane which is flush with the saw blade body or higher than the saw blade body.

Preferably, the material of the sawtooth group is high-speed tool steel, alloy steel or powder steel.

Compared with the prior art, the method has the following beneficial effects:

1. the saw section of the grinding saw blade is smooth, clean and flat, the saw gap is small, the precision is high, and the saw cutting allowance can be greatly reduced;

2. when the saw blade is used for sawing, the force shared by each tooth is more uniform, and the whole resistance is smaller, so that the sawing speed can be 2-8 times faster than that of a common saw blade according to different sawing materials;

3. the saw teeth also adopt a chamfer form, so that the tooth tips of the saw blade are less prone to tooth breakage when a workpiece is replaced or carried normally;

4. the saw blade teeth wear slowly and have long service life.

Drawings

FIG. 1 is a partial view of a conventional bi-metal band saw blade;

FIG. 2 is a top view of the conventional bimetallic band saw blade of FIG. 1;

FIG. 3 is a cross-sectional view of the prior art bi-metal band saw blade G-G of FIG. 1;

FIG. 4 is a cross-sectional view of the conventional bi-metal band saw blade H-H of FIG. 1;

FIG. 5 is a partial view of the bimetallic band saw blade of the present embodiment;

FIG. 6 is a top view of the bimetallic band saw blade of the present embodiment;

FIG. 7 is a cross-sectional view of the bi-metal band saw blade H-H of FIG. 5;

FIG. 8 is a cross-sectional view of the bi-metal band saw blade G-G of FIG. 5;

FIG. 9 is a cross-sectional view of the bi-metal band saw blade I-I of FIG. 5;

FIG. 10 is a cross-sectional view of the bimetallic band saw blade J-J of FIG. 5;

FIG. 11 is a cross-sectional view of the bi-metal band saw blade K-K of FIG. 5;

FIG. 12 is a cross-sectional view of the bi-metal band saw blade L-L of FIG. 5;

FIG. 13 shows a saw tooth set structure in which one of the saw tooth sides is planar.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the present invention is not limited to the specific embodiments disclosed below. The terms "upper", "lower", "left" and "right" used herein are defined with reference to the accompanying drawings, and it is to be understood that the above-described terms do not limit the scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 5-12, a bi-metal road milling band saw blade includes a blade body 100, and a plurality of sets of teeth 200 disposed on the blade body.

Each group of saw tooth group 200 comprises at least one first saw tooth 201, the width of the edge end of the first saw tooth 201 is greater than the width of the saw blade body 100 in the thickness direction of the saw blade, chamfers 103 are arranged on the two sides of the edge end of the first saw tooth 201 in the width direction, and at least one side surface of the first saw tooth 201 is an acute-angled inclined surface.

The first saw tooth 201 has a structure as shown in fig. 6, and a top view of the saw band is shown in fig. 12, and chamfers 103 are formed on both sides of the tip of the first saw tooth 201 having a trapezoidal structure. Two sides of the trapezoid are inclined planes respectively, and the angle of each inclined plane is smaller than 90 degrees.

In this embodiment, the same saw tooth group has three, four or more saw teeth with different shapes, wherein at least one of the first saw teeth 201 with the tooth shape is polished, the saw cutting surface of the saw blade is smooth, the saw gap is small and the saw height is high, and the saw cutting allowance can be greatly reduced.

In another embodiment, each group of teeth includes at least three first teeth 201, and the chamfer on both sides of the edge end of each first tooth 201 has different size.

The saw teeth in the embodiment are all composed of the first saw teeth 201, but the chamfers 103 on two sides of the edge end of each first saw tooth are different in size, so that the force shared by each tooth is uniform through setting different chamfers, and the setting that the saw street width is T is met.

In another embodiment, each set of teeth 200 further includes at least one second tooth 202, and the width of the edge of the second tooth 202 is greater than the width of the saw blade body 100 in the thickness direction of the saw blade; the two sides 204 of the second tooth 100 are at respective front angles of M ° and N ° with respect to the blade body 100 in the height direction of the blade.

The structure of the second saw tooth 202 is shown in fig. 7, the top view on the saw band is shown in fig. 11, the second saw tooth 202 is of a standard trapezoidal structure, and the width of the edge end at the top is equal to the width T of the saw path; the protruding heights of the two sides of the blade end relative to the saw blade body 100 are respectively R and S, and the numerical values of R and S can be the same or different.

In the embodiment, each group of saw teeth consists of a first saw tooth 201 and a second saw tooth 202, the number of each saw tooth can be specifically set according to needs, for example, one second saw tooth 202 and a plurality of first saw teeth 201, and the chamfer angle on each first saw tooth 201 is different. The two sides of the edge end of the first sawtooth 201 are provided with chamfers, the two sides of the edge end of the second sawtooth 202 are not provided with chamfers and protrude relative to the saw blade body, forward inclination of M degrees and forward inclination of N degrees are respectively formed between the protruded side face and the saw blade body (saw band), furthermore, the numerical values of M and N are not more than 10, the numerical values are the same or different, and the M and the N in the preferred embodiment are both 6 degrees.

As shown in FIG. 11, the two sides of the second tooth 202 are angled back relative to the body of the blade by Q and P, respectively, in the length direction of the blade, Q and P having a value not exceeding 5 and being of the same or different size, with Q and P in the preferred embodiment being 2-3.

In another embodiment, each group of saw teeth 200 further includes at least one third saw tooth 203, the width of the edge of the third saw tooth 203 is greater than the width of the saw blade body 100 in the thickness direction of the saw blade, the edge of the third saw tooth 203 is provided with a chamfer 103 on one side in the width direction, and at least one side surface of the third saw tooth is an acute-angled bevel.

The third serration 203 has two structures, one of which is a left-side chamfer of the edge end and the other of which is a right-side chamfer of the edge end, as shown in fig. 9 and 10. In the same sawtooth group, a plurality of third sawteeth 203 can be left-side chamfers or right-side chamfers, and the chamfers can be the same or different in size; alternatively, there are a plurality of third serrations 203 having both left and right chamfers within the same set of serrations.

In another embodiment, each set of teeth 200 includes at least two third teeth 203, the chamfer 103 is disposed on the same side of each third tooth, and the chamfer on each third tooth is different in size. Or each group of saw tooth group 200 comprises at least two third saw teeth 203, and chamfers are respectively arranged on two sides of the two third saw teeth 203 and have the same or different sizes.

In another embodiment, one side of the first tooth 201 in the thickness direction of the saw blade is a bevel with an acute angle, and the other side 204 is a plane flush with or higher than the body of the saw blade. This plane may also be present at the sides of the second 202 and third 203 serrations.

In this embodiment, the material of the saw tooth group is high speed tool steel, alloy steel or powder steel.

As shown in fig. 5-13, the saw blade of this embodiment, whether it has equal teeth (equal ABCDE value) or varying teeth (unequal ABCDE value), includes a plurality of teeth with different grinding patterns in a set of pitches F. The tooth tips with different grinding modes mainly have the following forms: firstly, the tooth form of the second saw 202 is as shown in fig. 8, two sides of the tooth material are not ground flat with the back material, and form certain angles of M ° and N ° with the back material, which are called front side angles, and the angles can be the same or different, so that a total saw path T is formed, and saw paths R and S are respectively formed by two sides and the back material; viewing this gear from another angle, as shown in fig. 11, the angles Q ° and P ° formed by the gear and the back material are called the back side angle. The second saw tooth 202 is shown in fig. 7 and 12, and is in the form of a tooth material (a first saw tooth 201 structure) of the first gear, chamfers 103 are added on two sides, and the chamfers on the two sides can be the same or different. The tooth material of # three and # four (i.e., the third saw-tooth 203) is in the form of the tooth material of # three, as shown in fig. 9 and 10, and a chamfer 103 is added on one side. The final set of tooth shapes is formed by combining the above four forms of tooth materials: one group of tooth shapes can be completely composed of a No. two tooth material (second saw teeth 202), and three or four teeth formed by different chamfer angles are in a group of tooth shapes; or the first tooth and the second tooth are mixed and arranged to form a group of tooth shapes; or a group of tooth shapes formed by unequal number of tooth materials in all forms; in combination of the above forms, the height of the tooth tip can be distributed according to actual conditions. The tooth-type band saw blade formed by circularly and sequentially arranging the tooth shapes in the form is the road grinding band saw blade.

The above description is only exemplary of the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the present invention.

Claims (10)

1. The utility model provides a bimetal mill way area saw blade, includes the saw blade body, and sets up multiunit sawtooth group on the saw blade body, its characterized in that:

each group of saw teeth comprises at least one first saw tooth, the width of the edge end of each first saw tooth is larger than the width of the saw blade body in the thickness direction of the saw blade, chamfers are arranged on the two sides of the edge end of each first saw tooth in the width direction, and at least one side surface of each first saw tooth is an acute inclined surface.

2. The bi-metal road band saw blade of claim 1, wherein each set of teeth includes at least three first teeth, each first tooth having a chamfer of different size on either side of the cutting edge.

3. The bi-metal road-milling band saw blade of claim 1, wherein each set of teeth further includes at least one second tooth, said second tooth having a tip width greater than a width of said blade body in the thickness direction of the blade; in the height direction of the saw blade, two side surfaces of the second saw teeth are respectively provided with M degrees and N degrees of front side angles relative to the saw blade body.

4. A bi-metal road band saw blade as defined in claim 3, wherein said second teeth have respective sides that are angled rearwardly of the blade body by an angle of Q ° and P °, respectively, in the lengthwise direction of the blade.

5. The bi-metal road band saw blade of claim 4, wherein said M and N have values not exceeding 10, and are the same or different in size; the values of Q and P are not more than 5 and are the same or different.

6. A bi-metal road milling band saw blade as defined in claim 1, wherein each set of teeth further includes at least one third tooth, said third tooth having a tip width greater than a width of said blade body in a thickness direction of said blade, said tip of said third tooth having a chamfer on a side in the width direction, and at least one side of said third tooth having an acute angled face.

7. The bi-metal road band saw blade of claim 6, wherein each set of teeth includes at least two third teeth, the chamfer being disposed on the same side of each third tooth, and the chamfer on each third tooth being of a different size.

8. The bi-metal road band saw blade of claim 6, wherein each set of teeth includes at least two third teeth, and chamfers are provided on both sides of the two third teeth, respectively, the chamfers being the same or different in size.

9. The bi-metal road band saw blade of claim 1, wherein said first tooth has a side surface inclined at an acute angle in the thickness direction of the blade and the other side surface flush with or higher than the plane of the blade body.

10. The bi-metal road band saw blade of claim 1, wherein said set of teeth is made of high speed tool steel, alloy steel or powder steel.

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