Disclosure of Invention
In order to solve the problems, the invention provides a circular saw blade with a textured matrix filled with damping material and a preparation method thereof. The diameter of the circular saw blade matrix is D, the micro-textures which are densely distributed are respectively processed between 0.25-0.75D on the two sides of the matrix, and damping materials such as rubber, polyurethane and the like are filled in the micro-textures and on the surface of the textured area.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect of the present invention, there is provided a textured matrix-filled damping material circular saw blade comprising:
a circular saw blade base;
the two sides of the circular saw blade matrix are provided with micro textures;
damping materials are filled in the micro-textures and on the surface of the textured area;
wherein, the diameter of the circular saw blade matrix is D, and a micro texture is arranged between 0.25D and 0.75D on the two sides of the matrix;
the microtexture is shown as a radial or circumferential microtexture.
The invention reduces sawing noise, reduces saw tooth abrasion, improves the quality of the processed surface and prolongs the service life of the saw blade on the basis of not reducing the rigidity of the saw blade and not affecting the service life of the saw blade.
In a second aspect of the present invention, there is provided a method of preparing a textured matrix filled damping material circular saw blade comprising:
The method comprises the steps of processing densely distributed micro textures on a saw blade matrix, wherein the micro texture areas are between 0.25D and 0.75D on two sides of the saw blade matrix, the micro texture intervals are 100-500 mu m, the depth is 10-50 mu m, the width is 30-100 mu m, and the interval angle is 1-5 degrees;
Spraying a liquid damping material on the micro-texture area of the saw blade matrix to fill the damping material in the micro-texture and form a damping material coating with the thickness of 1-100 mu m on the surface of the textured matrix;
And (3) placing the sprayed circular saw blade in a baking oven for baking and drying, and cooling to room temperature after baking is finished to obtain the finished product.
In a third aspect, the invention provides the use of the textured matrix filled damping material circular saw blade described above in the machining and manufacturing of circular saw blades.
The beneficial effects of the invention are that
(1) The invention creatively provides the micro-texture matrix filled damping material circular saw blade, solves the problems of slotting and aperture rigidity reduction of the saw blade, insufficient noise reduction effect of the slot and aperture filled damping material and the like, and can effectively reduce vibration and noise of the circular saw blade, increase the rigidity of the saw blade, reduce abrasion of saw teeth, prolong the service life of the saw blade and improve the quality of a processed surface.
(2) The preparation method is simple, has strong practicability and is easy to popularize.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic view of a circular saw blade with a textured substrate filled with damping material according to the present invention.
FIG. 2 is a schematic view of a circular saw blade with radial micro-texture filled damping material according to example 2 of the present invention.
FIG. 3 is a schematic view of a circular saw blade with a circumferentially micro-textured filled damping material according to example 3 of the present invention.
Fig. 4 shows four saw blade models in the experimental example of the present invention.
FIG. 5 is a schematic representation of stiffness and buckling characterization analysis.
Fig. 6 shows four blade stiffness and buckling characteristics for the experimental example of the present invention.
FIG. 7 is a schematic diagram of a different blade transient response analysis.
Fig. 8 shows transient vibration responses of four saw blades a in an experimental example of the present invention.
Fig. 9 is a transient vibration response of a substrate micro-textured filled rubber coated saw blade according to example 2 of the present invention.
FIG. 10 is a schematic representation of hammering noise and noise response time for a substrate microtextured filled rubber coated saw blade according to example 2 of the present invention.
The legend marks respectively indicate the meanings of a mounting hole 1, a micro-texture area inner diameter 3, a matrix 4, a micro-texture area outer diameter 5, saw teeth 6, a round hole micro-texture 7, a damping material 8, a radial micro-texture 9 and a circumferential micro-texture 10.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
A textured matrix filled damping material circular saw blade comprising:
a circular saw blade base;
the two sides of the circular saw blade matrix are provided with micro textures;
damping materials are filled in the micro-textures and on the surface of the textured area;
wherein, the diameter of the circular saw blade matrix is D, and a micro texture is arranged between 0.25D and 0.75D on the two sides of the matrix;
the microtexture is shown as a radial or circumferential microtexture.
In some embodiments, the damping material is rubber or polyurethane.
In some embodiments, the shape of the micro-texture further comprises circular holes.
A preparation method of a circular saw blade with a textured matrix filled with damping material comprises the following steps:
The method comprises the steps of processing densely distributed micro textures on a saw blade matrix, wherein the micro texture areas are between 0.25D and 0.75D on two sides of the saw blade matrix, the micro texture intervals are 100-500 mu m, the depth is 10-50 mu m, the width is 30-100 mu m, and the interval angle is 1-5 degrees;
Spraying a liquid damping material on the micro-texture area of the saw blade matrix to fill the damping material in the micro-texture and form a damping material coating with the thickness of 1-100 mu m on the surface of the textured matrix;
And (3) placing the sprayed circular saw blade in a baking oven for baking and drying, and cooling to room temperature after baking is finished to obtain the finished product.
In some embodiments, the spray pressure is 0.2-0.35Mpa.
In some embodiments, the spray distance is 30-60cm.
In some embodiments, the baking temperature is 40-80 ℃.
In some embodiments, the baking time is 2-5 hours.
More specifically, the invention provides a circular saw blade with a textured matrix filled with damping materials, wherein the two sides of the saw blade matrix are respectively provided with densely distributed micro textures, and the damping materials such as rubber, polyurethane and the like are filled in the micro textures and on the surface of the textured area.
The preparation method of the circular saw blade with the textured matrix filled with the damping material comprises the following steps:
(1) The laser processing technology or the mechanical micro-processing technology is adopted to process the densely distributed micro-textures on the saw blade matrix, the shapes of the micro-textures comprise round holes, radial micro-textures, annular micro-textures and the like, the micro-texture area is between 0.25D and 0.75D of the saw blade, the micro-textures are spaced at intervals of 100-500 mu m, the depth is 10-50 mu m, the width is 30-100 mu m, and the spacing angle is 1-5 degrees.
(2) Spraying damping materials such as liquid rubber, polyurethane and the like on the micro-texture area of the saw blade matrix by adopting a spraying technology, so that the damping materials are filled in the micro-texture and a damping material coating with the thickness of 1-100 mu m is formed on the surface of the textured matrix, wherein the spraying pressure is 0.2-0.35MPa, and the spraying distance is 30-60cm.
(3) And (3) placing the sprayed circular saw blade in a baking oven for baking and drying, wherein the baking temperature is 40-80 ℃, the baking time is 2-5h, and cooling to room temperature along with the oven after baking.
The invention will now be described in further detail with reference to the following specific examples, which should be construed as illustrative rather than limiting.
Example 1:
a circular saw blade with a textured matrix filled with damping materials is characterized in that the saw blade matrix 3 is made of high-speed steel, round hole micro-textures are respectively processed in micro-texture areas 4 on two sides of the saw blade matrix 3, and damping materials 8 are filled in the round hole micro-textures 7 and the micro-texture areas 4. The preparation method comprises the following steps:
1. The laser processing technology is adopted to process the densely distributed circular hole micro-textures 7 between 0.25D and 0.75D of the saw blade, the depth of the micro-textures is 50 mu m, the width is 30 mu m, the radial distance is 100 mu m, and the interval angle is 2 degrees.
2. And spraying a liquid rubber damping material 8 on the saw blade micro-texture area 4 and the round hole micro-texture 7 by adopting a spraying technology, so that the damping material is filled in the round hole micro-texture 7, and the rubber damping material 8 with the thickness of 100 mu m is formed on the surface of the texture area 4, wherein the spraying pressure is 0.35MPa, and the spraying distance is 40cm.
3. And (3) placing the sprayed circular saw blade in a baking oven for baking and drying, wherein the baking temperature is 60 ℃, the baking time is 4 hours, and cooling to room temperature along with the oven after baking.
Example 2:
A textured matrix filled damping material circular saw blade as described in example 1, except that the saw blade matrix 3 material was SKS51 steel, prepared as follows:
1. Machining radial micro-texture 9 with depth of 20 μm, width of 50 μm and spacing angle of 1.5 deg. between 0.3-0.6D of saw blade by mechanical micro-machining technique
2. And spraying a liquid polyurethane damping material 8 on the curve micro-texture 9 and the textured area 4 to form a polyurethane damping material layer with the thickness of 50 mu m on the surface, wherein the spraying pressure is 0.2MPa, and the spraying distance is 50cm.
3. The baking temperature was 80℃and the baking time was 2 hours.
Example 3:
a textured matrix filled damping material circular saw blade as in example 1, except that the saw blade matrix 3 material was nickel-based alloy steel, the method of preparation was as follows:
1. The densely distributed annular micro-texture 10 is processed between 0.4D and 0.65D of the saw blade, the depth of the micro-texture is 40 mu m, the width is 80 mu m, and the interval is 200 mu m.
2. And spraying liquid polyurethane damping material 8 on the linear micro-texture 10 and the textured area 4, wherein the spraying pressure is 0.3MPa, the spraying distance is 30cm, and the thickness of the damping material 8 is 70 mu m.
3. The baking temperature was 40 ℃ and the baking time was 5h.
Experimental example
Four saw blades (fig. 4) of grooving, perforating, radial texture (example 2) and circumferential texture (example 3) were analyzed for stiffness, buckling characteristics, transient vibration characteristics by abaqus simulation software, and the influence of the teeth on the blade performance was ignored here, and the blade model was set to be disc-shaped. The saw blade material is SKS51 steel, the density is 7850kg/m 3, the elastic modulus is 2.1X10 11 Pa, the Poisson ratio is 0.27, and the damping ratio is 0.2%.
Fig. 5 is a schematic diagram of analysis of stiffness and buckling characteristics of a saw blade, and simulation results of analysis of stiffness and buckling characteristics of four saw blades based on the method shown in fig. 5 are shown in fig. 6. It is seen that the stiffness and buckling characteristics of the base micro-textured saw blade are significantly improved compared to the slotted, perforated saw blade (fig. 6).
FIG. 7 is a graph showing transient vibration response analysis of different saw blades, wherein excitation force with the duration of 0.0001s and the magnitude of 10N is applied at the point A of the edge of the saw blade, and vibration displacement response of the point A is compared and analyzed. Based on the method shown in fig. 7, the transient response analysis results are shown in fig. 8, the vibration response time of the circular (example 3) and radial (example 2) micro-texture saw blade is obviously shortened compared with that of the slotting and hole saw blade, and the micro-texture reduces the vibration of the saw blade. In addition, the transient vibration response of the substrate micro-texture filled rubber coated saw blade of example 2 was analyzed, and the vibration response time was further shortened as shown in fig. 9.
According to the analysis, the rigidity and buckling characteristic values of the micro-texture saw blade of the matrix are higher than those of the slotting and perforating saw blade, the vibration response time is shorter than that of the slotting and perforating saw blade, and the transient vibration response time is further shortened after the rubber damping coating is filled on the micro-texture surface of the matrix.
To further investigate the vibration noise of the base micro-textured filled damping coated saw blade, the hammering noise of the saw blade was analyzed using the hammering method, and the results showed that the noise response time of the base micro-textured saw blade of example 2 was reduced compared to a conventional saw blade, and the vibration noise response time of the saw blade was greatly shortened after filling the textured surface with the damping coating (fig. 10).
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.