A high-speed, high-precision electric spindle based on a pulsating heat pipe cooling structure
A technology of pulsating heat pipes and cooling structures, applied in metal processing equipment, maintenance and safety accessories, metal processing machinery parts, etc., can solve the problems of increased cooling costs, reduced system reliability, restrictions on popularization and application, etc., to reduce thermal deformation , High heat dissipation heat flux density, high heat dissipation efficiency
Active Publication Date: 2019-07-23
XI AN JIAOTONG UNIV
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Problems solved by technology
However, the problem of "high-pressure dynamic sealing" is involved in the implementation process. With the increase of the speed, the cooling cost increases sharply, and the system reliability also decreases sharply, which seriously restricts the popularization and application of this method.
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Embodiment Construction
[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0017] refer to figure 1 , a high-speed, high-precision electric spindle based on a pulsating heat pipe cooling structure, including an electric spindle core 13, the front end of the electric spindle core 13 is fixed on the front bearing assembly 1, the rear end is fixed on the rear bearing assembly 5, and the front bearing Component 1 is connected to the front end of the motorized spindle housing 2, the interior of the motorized spindle housing 2 is connected to the motorized spindle stator 3 and the rear bearing assembly 5, the rear end of the motorized spindle housing 2 is connected to the rear cover 6 of the cooling chamber, the rear bearing assembly 5 and the cooling chamber A cooling chamber 9 is formed between the rear covers 6, and the tail end of the electric spindle core 13 extends into the cooling chamber 9, and the cooling chamber 9 is a closed sp...
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A high-speed and high-precision electric spindle based on a pulsating heat pipe cooling structure, comprising an electric spindle shaft core, the front end of the electric spindle shaft core is fixed on the front bearing assembly, the rear end is fixed on the rear bearing assembly, the front bearing assembly and the electric spindle The front end of the housing is connected, the interior of the motor spindle housing is connected to the motor spindle stator and the rear bearing assembly, the rear end of the motor spindle housing is connected to the rear cover of the cooling chamber, the rear bearing assembly and the rear cover of the cooling chamber constitute the cooling chamber, and the The tail end goes deep into the cooling chamber, the serpentine pulsating heat pipe fixing channel is machined on the shaft core of the electric spindle, the closed pulsating heat pipe is fixed in the fixing groove of the serpentine pulsating heat pipe, and the electric spindle shaft core sleeve is sleeved on the shaft core of the electric spindle It adopts the phase change process of the working medium in the closed pulsating heat pipe to realize the efficient heat dissipation of the rotor part of the electric spindle and the front bearing assembly and the rear bearing assembly, which controls the temperature of the shaft core and reduces the thermal deformation of the electric spindle parts. , so as to improve the machining accuracy of the machine tool.
Description
technical field [0001] The invention relates to the technical field of high-speed, high-precision electric spindle cooling, in particular to a high-speed, high-precision electric spindle based on a pulsating heat pipe cooling structure. Background technique [0002] High-speed, high-precision electric spindle is the core component of precision and ultra-precision machining machine tools. Due to the limitations of structural factors such as built-in electric spindle motors and closed casings currently used, the heat generated by the motor and front and rear bearings cannot be exported in a timely and effective manner. As a result, a complex temperature field is formed inside the electric spindle, causing thermal deformation of each component, resulting in changes in its size and relative position between components, which in turn affects the machining accuracy of precision and ultra-precision machining tools. According to statistics, in precision machining, machining errors c...
Claims
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IPC IPC(8): B23Q11/12B23B19/02
CPCB23Q1/70B23Q11/127
Inventor 高建民李法敬史晓军唐瑞徐亮李云龙
Owner XI AN JIAOTONG UNIV