A method for predicting the critical temperature load on the outer edge of a woodworking circular saw blade

A woodworking circular saw and critical temperature technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of circular saw blade resonance instability, etc., to increase critical temperature load, improve service life, and calculation efficiency high effect

Active Publication Date: 2019-02-19
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Abstract
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Problems solved by technology

[0005] However, domestic and foreign academic literature and patent materials do not record how to obtain the critical temperature load that causes the resonance instability of the circular saw blade. Therefore, the patent of the present invention proposes a method for predicting the critical temperature load on the outer edge of the woodworking circular saw blade. , it can not only provide important technical guidance for the structural design of circular saw blades, but also provide technical guidance for the use and maintenance of circular saw blades during sawing

Method used

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  • A method for predicting the critical temperature load on the outer edge of a woodworking circular saw blade
  • A method for predicting the critical temperature load on the outer edge of a woodworking circular saw blade
  • A method for predicting the critical temperature load on the outer edge of a woodworking circular saw blade

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Embodiment

[0065] Take a woodworking circular saw blade with an outer edge diameter of 355mm, a flange diameter of 120mm, and a thickness of 2.2mm as an example. The base steel of the circular saw blade is 75Cr1, the elastic modulus is 210GPa, Poisson’s ratio is 0.3, and the density is 7.8g / cm3.

[0066] Import the design drawings of circular saw blades into ABAQUS or other finite element software, or perform geometric modeling on circular saw blades directly through ABAQUS or other finite element software, such as figure 1 shown.

[0067] figure 1 Among them, 1 is the outer edge of the circular saw blade flange, and a fixed constraint is imposed on the outer edge of the circular saw blade flange.

[0068] The working speed of the circular saw blade is 3000 rpm, so its rotational frequency is 50 Hz, and a rotating centrifugal force is applied to the base of the circular saw blade.

[0069] The temperature in the circumferential direction of the circular saw blade is uniformly distribut...

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Abstract

The invention discloses a method for predicting the critical temperature load on the outer edge of a woodworking circular saw blade. Firstly, the circular saw blade drawings designed by CAD software or other mechanical parts are imported into ABAQUS or other finite element software. Then the temperature load and centrifugal force load are applied to the base of the circular saw blade, and the stress field generated in the circular saw blade is obtained by using the static implicit solution module. At last, by mean of that vibration mode solving module, the natural frequency of circular saw blade under the combined action of temperature load and centrifugal force load is obtained, the temperature load is adjusted, the calculated natural frequencies change accordingly, When the circular sawblade approaches the resonance instability state, the applied temperature load is the critical temperature load. This method has high calculation efficiency, can provide important technical guidance for the structure design of the circular saw blade, and provide technical guidance for the use and maintenance of the circular saw blade in sawing.

Description

technical field [0001] The invention relates to the technical field of woodworking equipment, in particular to a method for predicting the critical temperature load on the outer edge of a woodworking circular saw blade. Background technique [0002] Woodworking circular saw blade is a basic tool for wood processing. It has the advantages of high efficiency, simple use, convenient maintenance, and convenient movement. It accounts for 30% to 40% of all wood production equipment, reducing its thickness and increasing its stability. Recognized at home and abroad as the most effective way to improve wood utilization. [0003] During the sawing process of the woodworking circular saw blade, the outer edge will inevitably have a temperature rise, and the heat will gradually conduct to the flange of the circular saw blade, forming a temperature gradient along the radial direction of the circular saw blade. When the temperature of the outer edge of the circular saw blade rises When ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23Y02P90/30
Inventor 李博张占宽
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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