CN104084640A - Circular saw blade capable of reducing vibration and noise - Google Patents

Abstract

The invention discloses a circular saw blade capable of reducing vibration and noise. The circular saw blade capable of reducing vibration and noise can substantially reduce vibration and noise and improve working efficiency and the working environment. The circular saw blade capable of reducing vibration and noise comprises a saw blade base body, a tooth ring, streamline-shaped grooves, rectangular grooves, composite damping materials, mounting holes and a shaft hole. The saw blade base body comprises two circular steel plates, and the composite damping materials are clamped between the two circular steel plates. The tooth ring is welded to the edges of the two circular steel plates. The tooth ring is of a ring shape, and the cross section of the tooth ring is of a T shape. The circumference of the tooth ring is provided with the rectangular grooves with the same number as the streamline-shaped grooves. The positions of the streamline-shaped grooves and the positions of the rectangular grooves are staggered. Saw teeth are machined on the tooth ring. On the basis of ensuring the bearing capacity, the circular saw blade has the advantages of reducing vibration and noise; noise experiments show that the total sound pressure level of the noise of the circular saw blade capable of reducing vibration and noise is 20 dB or so lower than that of a common circular saw blade on the same working condition, so that the purpose of improving the environment is achieved.

Description

A vibration-reducing and noise-reducing circular saw blade

technical field

The invention relates to a tool for cutting metal and non-metal materials, in particular to a circular saw blade with vibration and noise reduction.

Background technique

In wood industry, metallurgy, marble, concrete and other raw material cutting industries, circular saw blades are widely used because of their good cutting performance and high processing efficiency. The metallurgical circular saw blade will rotate at high speed under the action of working conditions, and the vibration it receives is relatively large, and because of its large area and poor rigidity, the excited vibration is very easy to radiate relatively large noise. The higher the rotation speed of the circular saw blade, the more intense the excitation of the circular saw blade during sawing, the greater the relative vibration noise, and the more serious the noise pollution generated. Reducing the vibration of the circular saw blade itself is a main research direction of the noise reduction technology of the circular saw blade. This is because most of the noise of the saw blade comes from the noise radiated from the saw surface when the circular saw blade vibrates. In addition, the vibration of the circular saw blade will expand the saw road and seriously affect the quality of the saw piece. To study the vibration and noise reduction technology of circular saw blades, it is necessary to analyze its own vibration form and find circular saw blades with good vibration characteristics and low noise radiation. At present, extensive theoretical and experimental research work has been carried out on the vibration and noise of circular saw blades, and circular saw blades with slotted holes, laminated damping circular saw blades and other circular saw blades with low noise radiation have been developed successively. Since the vibration and noise of circular saw blades are complex and involve multi-disciplinary comprehensive knowledge, most researchers rely on the experience obtained under specific experimental conditions.

Consult the published patent documents, patent publication (announcement) number: CN202963632U, which discloses a vibration-reducing circular saw blade, and CN201175794Y discloses a noise-reducing circular saw blade, which realizes Vibration reduction and noise reduction; Patent Publication (Notice) No.: CN1233202A discloses a circular saw blade with pits, which realizes vibration reduction by processing three weeks of pits on the base of the sawtooth root. The saw blades disclosed above all have certain vibration and noise reduction effects. However, due to the small space of the groove, the vibration-damping material filled in the groove is limited, and the range of reducing vibration and noise is limited. The vibration and noise of circular saw blades are related to many factors, further in-depth theoretical and practical research is needed to introduce circular saw blades that can reduce vibration and noise to achieve the best effect.

Contents of the invention

The invention provides a vibration-reduction and noise-reduction circular saw blade, which can significantly reduce vibration and noise, improve work efficiency and improve the work environment.

A vibration-reducing and noise-reducing circular saw blade provided by the present invention includes: a saw blade base (1), a ring gear (2), a streamlined groove (3), a rectangular groove (4), a composite damping material (5), an installation hole (6) and shaft hole (7), the saw blade base (1) is two circular steel plates, and the composite damping material (5) is sandwiched between the two circular steel plates, forming a "sandwich" structure, in the "sandwich On the circular surface of the structure, there are odd-numbered streamlined slots (3) penetrating, and an axis hole (7) is opened in the center of the circular surface of the "sandwich" structure, and the axis hole is surrounded by mounting holes (6). A ring gear (2) is welded to the edge of the circular steel plate. The ring gear (2) is annular and has a T-shaped cross-section. On the circumference of the ring gear (2), there are the same number of rectangular slots as the streamlined grooves (3). The positions of the slot (4), the streamlined slot (3) and the rectangular slot (4) are mutually staggered, and sawtooth is processed on the ring gear (3).

The composite damping material (5) is made of a steel wire mesh (8) and silicon rubber (9) composite material, the steel wire mesh (8) is a skeleton arranged in a rhombus shape, and the silicon rubber (9) is filled therein.

The streamlined grooves (3) and rectangular grooves (4) are evenly distributed on the saw blade base (1), and the number thereof is 5, 7 or 9.

Compared with the circular saw blades of the same kind, the present invention has beneficial effects as follows: the present invention has the effect of reducing vibration and noise on the basis of satisfying the bearing capacity, and the noise experiment shows that the circular saw blades with vibration and noise reduction can be used in the same work The total sound pressure level of the noise under the condition is about 20dB lower than that of ordinary circular saw blades, which achieves the purpose of improving the environment.

Description of drawings

Fig. 1 is a structural schematic diagram of a vibration-reducing and noise-reducing circular saw blade.

Fig. 2 is a schematic diagram of a saw blade base of a circular saw blade with vibration and noise reduction.

Fig. 3 is a structural schematic diagram of a ring gear of a circular saw blade with vibration and noise reduction.

Fig. 4 is a structural schematic diagram of a composite damping material for a circular saw blade with vibration and noise reduction.

Numbers in the figure: 1. Saw blade base; 2. Ring gear; 3. Streamlined groove; 4. Rectangular groove; 5. Composite damping material; 6. Mounting hole; 7. Shaft hole; 8. Steel wire mesh; 9. Silicone Rubber.

Detailed ways

As shown in Figure 1, Figure 2 and Figure 3, a circular saw blade with vibration reduction and noise reduction consists of a saw blade base 1, a ring gear 2, a streamlined groove 3, a rectangular groove 4, a composite damping material 5, a mounting hole 6 and The shaft hole 7 is formed, and the saw blade substrate 1 is two circular steel plates made of 8CrV high-quality tool steel. Elastic modulus E = 206GPa, Poisson's ratio γ = 0.3, density ρ = 7800kg/m ³ , and the clamp diameter ratio of the circular saw blade is 0.3-0.6. Composite damping material 5 is sandwiched between two circular steel plates to form a "sandwich" structure. The thickness of the composite damping material 5 is less than or equal to 0.3t mm. The composite damping material 5 is made of steel wire mesh 8 and filled silicon rubber 9. The steel wire mesh 8 is the skeleton, and the steel wire mesh 8 is braided by steel wires with a diameter of 0.3 to 1 mm. , forming a rhombus or rectangular mesh, filled with silicone rubber 9, and cut into a round cake shape with a diameter of 0.94D. The shape is shown in Figure 4. Nine streamlined grooves 3 penetrated on the circular surface of the "sandwich" structure, the width of the streamlined grooves is 0.5-1mm, and the two ends of the grooves are inclined at a central angle of 20°, and are evenly distributed on the saw blade base 1, Open the shaft hole 7 in the center of the circular surface of the "sandwich" structure, and the shaft hole is surrounded by mounting holes 6. The diameter of the shaft hole 7 is 0.1D, the diameter of the mounting hole 6 is 0.02D, and the diameter of the positioning circle of the mounting hole 6 is 0.3D. . A ring gear 2 is welded on the edge of two circular steel plates, the material of the ring gear 2 is 8CrV high-quality tool steel, the thickness is t, the inner diameter of the ring gear 2 is 0.94D, the outer diameter is D, the ring gear 2 is annular, and the cross-sectional shape is T-shaped, 9 rectangular slots 4 are opened on the circumference of the ring gear 2, including 3 radial short slots and 6 radial long slots. The slot length of the radial short slots is 0.008-0.033D, and the radial long slot The length of the groove is 0.016～0.04D, which is evenly distributed on the saw blade base 1, and is evenly staggered with the streamline groove 3. The sawtooth is processed on the ring gear 3. After the sawtooth is formed, the sawtooth is tempered to achieve the required toughness and hardness. .

Claims (3)

1. a vibration and noise reducing saw blade, it is characterized in that this saw blade comprises: saw bit matrix (1), gear ring (2), streamlined groove (3), rectangular channel (4), composite damping material (5), installing hole (6) and axis hole (7), described saw bit matrix (1) is two circular steel plates, two circular steel plate therebetween composite damping materials (5), form " sandwich " structure, on the circular surface of " sandwich " structure, open the odd number streamlined groove (3) penetrating, open axis hole (7) at the center of the circular surface of " sandwich " structure, axis hole is around installing hole (6), at a gear ring of edge joint weld (2) of two circular steel plates, gear ring (2) ringwise, section configuration is T-shaped, on the circumference of gear ring (2), open the rectangular channel (4) with the same quantity of streamlined groove (3), streamlined groove (3) staggers mutually with the position of rectangular channel (4), the upper processing of gear ring (3) sawtooth.

2. a kind of vibration and noise reducing saw blade according to claim 1, it is characterized in that said composite damping material (5) is made up of steel wire (8) and silicon rubber (9) composite, steel wire (8) is skeleton, be arranged to diamond-mesh, silicon rubber (9) is filled in net.

3. a kind of vibration and noise reducing saw blade according to claim 1, is characterized in that said streamlined groove (3) and rectangular channel (4) are evenly distributed on saw bit matrix (1) upper, and its quantity is 5 or 7 or 9.