Device and method for measuring thermal characteristics of electric spindle with hollow cooling structure under internal cooling condition
A technology of cooling structure and measuring device, which is applied in the field of mechanical processing, can solve the problems of immature and unsuitable devices or methods, and achieve the effects of high-speed long-term measurement, convenient debugging and good reusability
Active Publication Date: 2020-05-05
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
Because when the cutting work is carried out under the internal cooling condition, the cutting fluid is sprayed everywhere, and the working space of the machine tool is filled with liquid, so the traditional method of using the contact trigger sensor measurement under the external cooling condition is not applicable. It is currently used to measure the hollow The device or method of thermal characteristics of the cooling structure electric spindle under the condition of internal cooling is not yet mature
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[0030] Such as figure 1 with figure 2 As shown, it is a measuring device for measuring the thermal characteristics of the electric spindle with a hollow cooling structure under the internal cooling condition and its specific application scenarios related to this embodiment, which includes: used to measure the hydraulic circuit of the spindle broaching mechanism Anti-interference wireless temperature sensor for outlet temperature 1. Anti-interference wireless temperature sensor for measuring the outlet temperature of the external cooling circuit at the spindle end 2. Anti-interference wireless temperature sensor for measuring the inlet temperature of the internal cooling circuit at the spindle end 3. Used to measure the spindle end Anti-interference wireless temperature sensor for front bearing temperature 4, anti-interference wired temperature sensor for measuring indoor ambient temperature 5, anti-interference wired temperature sensor for measuring hydraulic station surface ...
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The invention discloses a device and a method for measuring thermal characteristics of a hollow cooling structure motorized spindle under an internal cooling working condition. The device comprises ananti-interference wireless temperature sensor, an anti-interference wired temperature sensor, a displacement sensor, a temperature monitoring module, a numerical control machining center, a thermal characteristic measuring workpiece, a three-coordinate measuring machine and a data processing module. According to the invention, six cold and heat sources influencing the thermal characteristics of aspindle are analyzed, pre-temperature optimization point distribution is implemented, in the cutting experiment, the actual working condition of a machine tool on an industrial site is simulated through spindle idling and tool changing simulation operation, then, a special workpiece is designed to be used for circularly and repeatedly cutting, then the workpiece is moved into the three-coordinatemeasuring machine to measure cutting plane characteristic data, the cutting plane characteristic is fitted, the height difference of the cutting plane is calculated, and the thermal characteristics of the spindle is fitted, so that the water cooling condition of an outer water jacket and the heating condition of a spindle broach mechanism are integrated under the internal cooling working condition, and the thermal characteristics of the spindle is conveniently and universally obtained.
Description
technical field [0001] The present invention relates to a technology in the field of mechanical processing, in particular to a thermal characteristic measurement device and method for measuring an electric spindle with a hollow cooling structure under internal cooling conditions. Background technique [0002] The electric spindle unit is the core component of the CNC machine tool. Its performance determines the machining accuracy and production efficiency of the entire machine tool to a large extent. Studying its thermal characteristics is very important to improve the machining accuracy of the machine tool. Today, electric spindles with hollow cooling structures are gradually being used in the field of machining, and measuring their thermal elongation under internal cooling conditions is a current industrial technical problem. Because when the cutting work is carried out under the internal cooling condition, the cutting fluid is sprayed everywhere, and the working space of ...
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IPC IPC(8): G01N25/20
Inventor 杜正春朱梦瑞邓铭姚晓栋葛广言李慧敏杨建国
Owner SHANGHAI JIAOTONG UNIV