Circular saw blade with cutting notches arranged in staggered mode

Abstract

The utility model provides a circular saw blade with cutting notches arranged in a staggered mode, which comprises a saw blade body, a plurality of cutting notches and a plurality of cutting notches, the plurality of first blades are fixedly arranged in the assembling groove of the saw blade body, and a first cutting notch is concavely formed in the first cutting edge of each first cutting part; the plurality of second blades are fixedly arranged in the assembling groove of the saw blade body, a second cutting notch is concavely formed in the second cutting edge of each second cutting part, the cutting edge of the cutting part of each blade is provided with the cutting notch, and the cutting notches between the adjacent blades are arranged in a staggered mode. When the circular saw blade is used for cutting a metal workpiece, the width of scrap iron cut from the metal workpiece is smaller than the width of a cutting groove formed by cutting, so that the scrap iron can be easily discharged out of the cutting groove.

Description

Technical Field

[0001] The utility model relates to a circular saw blade, in particular to a circular saw blade with staggered cutting notches. Background Art

[0002] In the field of metal processing, cutting is a common and important technology with various methods. Among them, circular saw blades are a widely used cutting tool. Multiple blades are installed on the saw blade body, which can efficiently perform cutting operations such as cutting or grooving on metal workpieces.

[0003] However, when a circular saw blade cuts a metal workpiece at high speed, the width of the iron chips cut from the metal workpiece will match the length of the cutting edge of the circular saw blade, and the cutting groove formed on the metal workpiece will also be of the same width. These iron chips are tightly curled into a solid ball in the cutting groove. Since the circular saw blade is a tool for deep cutting, the deeper the cutting, the longer the iron chips with the same width as the cutting groove width stay in the cutting groove, and they will squeeze each other in the cutting groove. This will make chip removal difficult, which in turn affects the cutting ability and service life of the circular saw blade. Utility Model Content

[0004] The utility model provides a circular saw blade with staggered cutting notches, the main purpose of which is to improve the cutting ability and service life of the circular saw blade.

[0005] To achieve the aforementioned objectives, the utility model provides a circular saw blade with staggered cutting notches, comprising: a saw blade body having an axial direction and a plurality of assembly grooves surrounding the axial direction; a plurality of first blades fixedly arranged in the assembly groove of the saw blade body and each having a first cutting portion, the first cutting portion having a first cutting edge arranged along the axial direction, the first cutting edge having a first cutting notch recessed therein; and a plurality of second blades fixedly arranged in the assembly groove of the saw blade body and arranged at intervals from each of the first blades, each having a second cutting portion, the second cutting portion having a second cutting edge arranged along the axial direction, the second cutting edge having a second cutting notch recessed therein, and the second cutting notches are staggered with the first cutting notches.

[0006] The utility model has the advantages that the cutting edge of the cutting portion of each blade is provided with cutting notches, and the cutting notches between adjacent blades are designed to be arranged in a staggered manner, so that when the circular saw blade performs cutting processing on a metal workpiece, the width of the iron chips cut off the metal workpiece will be smaller than the width of the cutting groove formed by the cutting, so that the iron chips can be easily discharged from the cutting groove, and it is avoided that the iron chips are squeezed and retained in the cutting groove, which affects the cutting ability and service life of the circular saw blade.

[0007] Preferably, the assembly groove of the saw blade body has first positioning structures arranged face to face, and the first blade and the second blade both have second positioning structures arranged oppositely, and each of the second positioning structures is respectively positioned relative to each of the first positioning structures.

[0008] Preferably, the first cutting portion also has a first left side surface perpendicular to the axial direction and a first right side surface opposite to the first left side surface, and the first cutting notch is closer to the first left side surface; the second cutting portion also has a second left side surface perpendicular to the axial direction and in the same side plane as the first left side surface and a second right side surface opposite to the second left side surface, and the second cutting notch is closer to the second right side surface.

[0009] Preferably, the first cutting edge is divided into a first left edge segment and a first right edge segment with the first cutting notch as the boundary; the second cutting edge is divided into a second left edge segment and a second right edge segment with the second cutting notch as the boundary, and the cutting range of the second left edge segment covers the first cutting notch, and the second cutting notch is covered by the cutting range of the first right edge segment.

[0010] Preferably, each of the first blades has two first cutting portions, and the two first cutting portions are respectively arranged at two ends of the first blade.

[0011] Preferably, each of the second blades has two second cutting portions, and the two second cutting portions are respectively arranged at two ends of the second blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the first embodiment of the utility model, showing the state in which the saw blade body, the first blade and the second blade are combined.

[0013] Figure 2 It is a partial enlarged view of the first embodiment of the utility model.

[0014] Figure 3A It is a three-dimensional diagram of the first embodiment of the utility model, showing the state of the first blade.

[0015] Figure 3B It is a partial side view of the first embodiment of the utility model, showing the partial state of the first blade.

[0016] Figure 4A It is a three-dimensional diagram of the first embodiment of the utility model, showing the state of the second blade.

[0017] Figure 4B It is a partial side view of the first embodiment of the utility model, showing the partial state of the second blade.

[0018] Figure 5 It is a combined cross-sectional view of the first embodiment of the utility model.

[0019] Figure 6 It is a side view of the second embodiment of the utility model, showing the state of the first blade.

[0020] Figure 7 It is a side view of the second embodiment of the utility model, showing the state of the second blade.

[0021] In the figure: 10, saw blade body; 11, axial direction; 12, group groove; 121, first positioning structure; 20, first blade; 21, first cutting portion; 211, first cutting edge; 2111, first left blade segment; 2112, first right blade segment; 212, first cutting notch; 213, first left side; 214, first right side; 22, second positioning structure; 30, second blade; 31, second cutting portion; 311, second cutting edge; 3111, second left blade segment; 3112, second right blade segment; 312, second cutting notch; 313, second left side; 314, second right side; 32, second positioning structure. DETAILED DESCRIPTION

[0022] See also Figures 1 to 4B As shown, the first embodiment of the utility model provides a circular saw blade with staggered cutting notches, which is suitable for cutting a metal workpiece (not shown in the figure). The circular saw blade with staggered cutting notches is mainly composed of a saw blade body 10, a plurality of first blades 20 and a plurality of second blades 30, wherein:

[0023] The saw blade body 10 has an axial direction 11 and a plurality of assembly grooves 12 surrounding the axial direction 11 . In this embodiment, the saw blade body 10 is circular, and each of the assembly grooves 12 is arranged at the periphery of the saw blade body 10 .

[0024] Each of the first blades 20 is fixedly mounted in the assembly groove 12 of the saw blade body 10, and each has a first cutting portion 21, the first cutting portion 21 has a first cutting edge 211 arranged along the axial direction 11, and the first cutting edge 211 is concavely provided with a first cutting notch 212; Figure 3A and Figure 3BAs a basis for defining the direction, the first cutting portion 21 also has a first left side surface 213 perpendicular to the axial direction 11 and a first right side surface 214 opposite to the first left side surface 213, and the first cutting notch 212 is closer to the first left side surface 213; in addition, the first cutting edge 211 is divided into a first left edge section 2111 and a first right edge section 2112 with the first cutting notch 212 as the boundary, and the length L1 of the first right edge section 2112 is longer than the length L2 of the first left edge section 2111. Since the first cutting edge 211 is recessed with the first cutting notch 212, the sum of the lengths L2 and L1 of the first left edge section 2111 and the first right edge section 2112 is less than the thickness D1 of the first cutting portion 21, and the thickness D1 of the first cutting portion 21 refers to the shortest distance between the first left side surface 213 and the first right side surface 214.

[0025] Each of the second blades 30 is fixedly mounted in the assembly groove 12 of the saw blade body 10 and is arranged at intervals with each of the first blades 20, and each has a second cutting portion 31, the second cutting portion 31 has a second cutting edge 311 arranged along the axial direction 11, the second cutting edge 311 is recessed with a second cutting notch 312, and the second cutting notch 312 is staggered with the first cutting notch 212. In this embodiment, Figure 4A and Figure 4B As a basis for defining the direction, the second cutting portion 31 also has a second left side surface 313 which is perpendicular to the axial direction 11 and is in the same side plane as the first left side surface 213, and a second right side surface 314 which is opposite to the second left side surface 313 and is in the same side plane as the first right side surface 214, and the second cutting notch 312 is closer to the second right side surface 314; in addition, the second cutting edge 311 is divided into a second left edge section 3111 and a second right edge section 3112 with the second cutting notch 312 as the boundary, and the length L3 of the second left edge section 3111 is longer than the length L4 of the second right edge section 3112, and at the same time, the cutting range of the second left edge section 3111 covers the first cutting notch 212, and the second cutting notch 312 is covered by the cutting range of the first right edge section 2112. Since the second cutting edge 311 is recessed with a second cutting notch 312, the sum of the lengths L3 and L4 of the second left edge segment 3111 and the second right edge segment 3112 is smaller than the thickness D2 of the second cutting portion 21, and the thickness D2 of the second cutting portion 31 refers to the shortest distance between the second left side 213 and the second right side 214.

[0026] The above is the description of the main components of the first embodiment of the utility model. The operation mode and function of the utility model are described as follows:

[0027] The width of the cutting groove of the metal workpiece will be equal to the thickness of the cutting portion: since the first cutting notch 212 is recessed downward within the length range of the first cutting edge 211, and the second cutting notch 312 is recessed downward within the length range of the second cutting edge 311, and the cutting range of the second left edge section 3111 covers the first cutting notch 212, and the cutting range of the first right edge section 2112 covers the second cutting notch 312, therefore, when the circular saw blade performs a cutting operation on the metal workpiece, the first cutting edge 211 and the second cutting edge 311 will cut the metal workpiece in sequence, and the second left edge section 3111 will cut the uncut portion of the first cutting notch 212, and the first right edge section 2112 will cut the uncut portion of the second cutting notch 312, accordingly, the cutting groove generated by the circular saw blade cutting the metal workpiece will have a width equal to the thickness D1 of the first cutting portion 21 of the first blade 20 and the thickness D2 of the second cutting portion 31 of the second blade 30.

[0028] The width of the iron chips of the metal workpiece will be smaller than the width of the cutting groove: by designing that the first cutting notch 212 is recessed downward on the first cutting edge 211, the integrity of the first cutting edge 211 is destroyed and it is divided into a first left edge section 2111 and a first right edge section 2112, and by designing that the second cutting notch 312 is recessed downward on the second cutting edge 311, the integrity of the second cutting edge 311 is destroyed and it is divided into a second left edge section 3111 and a second right edge section 3112. Therefore, the width of the iron chips cut from the metal workpiece by the first left edge section 2111, the first right edge section 2112, the second left edge section 3111 and the second right edge section 3112 will be smaller than the thickness D1 and D2 of the first cutting portion 21 and the second cutting portion 31, and it can be seen from the above description that the width of the iron chips is therefore smaller than the width of the cutting groove of the metal workpiece, thereby allowing the iron chips to be easily discharged from the cutting groove.

[0029] Accordingly, the cutting edge of the cutting portion of each blade is provided with a cutting notch and the cutting notches between adjacent blades are designed to be arranged in a staggered manner, so that when the circular saw blade cuts a metal workpiece, the width of the iron chips cut off the metal workpiece will be smaller than the width of the cutting groove formed by the cutting, so that the iron chips can be easily discharged from the cutting groove, avoiding the iron chips from squeezing and remaining in the cutting groove, which would affect the cutting ability and service life of the circular saw blade.

[0030] It is worth noting that, see Figures 3A to 5 As shown, the assembly groove 12 of the saw blade body 10 has first positioning structures 121 arranged face to face, each of the first positioning structures 121 is convex, and the cross section of each of the first positioning structures 121 is roughly conical, but not limited to this, and can also be concave.

[0031] The first blade 20 and the second blade 30 both have second positioning structures 22 and 32 that are arranged in opposite directions. Each of the second positioning structures 22 and 32 is concave, but is not limited to this, and can also be convex. Each of the second positioning structures 22 and 32 is respectively positioned relative to each of the first positioning structures 121.

[0032] See also Figure 6 and Figure 7 As shown, the second embodiment of the utility model provides a circular saw blade with staggered cutting notches, which is different from the first embodiment in that:

[0033] Each of the first blades 20 has two first cutting portions 21, and the two first cutting portions 21 are respectively disposed at two ends of the first blade 20. Each of the second blades 30 has two second cutting portions 31, and the two second cutting portions 31 are respectively disposed at two ends of the second blade 30.

[0034] Accordingly, when the first cutting portion 21 of the first blade 20 or the second cutting portion 31 of the second blade 30 on the saw blade body 10 is damaged or needs maintenance, the first blade 20 or the second blade 30 can be turned and placed, and the other undamaged first cutting portion 21 or the second cutting portion 31 can be used to continue the cutting operation, greatly reducing the waiting time for maintenance or replacement of the circular saw blade.

Claims

1. A circular saw blade having staggered cutting notches, characterized in that: include: A saw blade body having an axial direction and a plurality of grooves arranged around the axial direction; A plurality of first blades are fixedly mounted in the assembly groove of the saw blade body and each has a first cutting portion, wherein the first cutting portion has a first cutting edge arranged along the axial direction, and the first cutting edge is concavely provided with a first cutting notch; and A plurality of second blades are fixedly arranged in the assembly groove of the saw blade body and are arranged at intervals with each of the first blades, and each has a second cutting portion, the second cutting portion has a second cutting edge arranged along the axial direction, the second cutting edge is recessed with a second cutting notch, and the second cutting notch is staggered with the first cutting notch.

2. A circular saw blade with staggered cutting notches as claimed in claim 1, characterized in that: The assembly groove of the saw blade body has first positioning structures arranged face to face, and the first blade and the second blade both have second positioning structures arranged opposite to each other, and each of the second positioning structures is respectively positioned with each of the first positioning structures.

3. A circular saw blade with staggered cutting notches as claimed in claim 1, characterized in that: The first cutting portion also has a first left side surface perpendicular to the axial direction and a first right side surface opposite to the first left side surface, and the first cutting notch is closer to the first left side surface; the second cutting portion also has a second left side surface perpendicular to the axial direction and in the same side plane as the first left side surface, and a second right side surface opposite to the second left side surface, and the second cutting notch is closer to the second right side surface.

4. A circular saw blade with staggered cutting notches as claimed in claim 1, characterized in that: The first cutting edge is divided into a first left edge segment and a first right edge segment by the first cutting notch; the second cutting edge is divided into a second left edge segment and a second right edge segment by the second cutting notch, and the cutting range of the second left edge segment covers the first cutting notch, and the second cutting notch is covered by the cutting range of the first right edge segment.

5. A circular saw blade with staggered cutting notches as claimed in claim 1, characterized in that: Each of the first blades has two first cutting portions, and the two first cutting portions are respectively arranged at two ends of the first blade.

6. A circular saw blade with staggered cutting notches as claimed in claim 1, characterized in that: Each of the second blades has two second cutting portions, and the two second cutting portions are respectively arranged at two ends of the second blade.

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