Vibration self-suppressed intelligent boring bar component based on magnetorheological fluid
A magneto-rheological fluid and boring bar technology, which is applied to boring bars, boring machine/drilling machine parts, automatic control devices, etc., can solve the problems of narrow applicable temperature range, high working voltage, and the influence of impurities, so as to ensure the processing quality , prolong life, reduce noise effect
Inactive Publication Date: 2007-12-19
ZHEJIANG UNIV
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The vibration suppression method of the boring bar in literature [6] belongs to the semi-active vibration reduction method, which mainly improves the response of the system by changing the dynamic characteristic parameters such as the stiffness or damping of the vibration reduction equipment, and its vibration reduction effect is better than that of the passive vibration reduction method. Compared with the active vibration reduction method, it has the advantages of low energy consumption and high reliability. Therefore, semi-active vibration reduction is an ideal vibration suppression method for boring bars. However, due to the use of electrorheological materials in literature [6], it will It brings a series of problems: ①The working voltage is high, and thousands of volts of high voltage (2KV~5KV) need to be loaded during the working process; ②The applicable temperature range is narrow, generally 10℃~70℃; Susceptible to impurities in manufacture and use
However, according to a large number of retrieved documents, there is no research report on the use of magnetorheological fluid materials for boring bar vibration suppression at home and abroad.
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[0018] As shown in Fig. 1, Fig. 2 and Fig. 3, the present invention includes a boring bar 2, an acceleration sensor 3, a boring bar component clamping part 4, a boring bar overhanging part 5, a sealing ring 6, a coil housing 7, and an excitation coil 8. Magnetorheological fluid 9, support sleeve 10, end cap 11. The boring bar of the clamping part 4 of the boring bar member is equipped with a coil housing 7 wound with an excitation coil 8; a magneto-rheological fluid 9 is installed in the cavity formed between the cylindrical hole in the coil housing 7 and the boring bar 2, Both ends of the cavity are sealed with sealing rings 6; a support sleeve 10 is installed outside the coil housing 7, and an end cover 11 is installed on the front end of the support sleeve 10; the above structure constitutes a magneto-rheological vibration suppression actuator 1; An acceleration sensor 3 is installed on the front end of the extension part 5, the acceleration sensor 3 is connected to the cha...
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The present invention discloses one kind of automatic vibration inhibiting intelligent boring bar membrane based on magnetic rheologic liquid. The boring bar is provided with a magnetic rheologic vibration inhibiting executor, an acceleration sensor connected to the charge amplifier in the control system, and an exciting coil connected to the power amplifier in the control system. The present invention proposes one new boring flutter inhibiting method integrating sin sensing, amending, analysis and treating and feedback control for automatic vibration inhibiting intelligent boring bar membrane. The magnetic rheologic liquid with the characteristic of being capable of converting between liquid state and solid state fast is used in the dynamic boring bar regulating process, and the magnetic field strength on the magnetic rheologic liquid is regulated to change the dynamic characteristic of the boring bar timely, so as to keep away from the flutter frequency and inhibit flutter effectively.
Description
technical field [0001] The invention relates to the technical field of machinery, in particular to a self-suppressing vibration intelligent boring bar component based on magneto-rheological fluid. Background technique [0002] Precision holes in mechanical products, such as cylinder bores of engines, are often the most critical parts in mechanical systems, because they are difficult to process and the processing quality is difficult to guarantee, which has always been a difficult point in mechanical processing. How to improve the processing quality and efficiency of precision holes has become one of the important issues to be solved urgently in the machinery manufacturing industry. Fine boring is an important method of precision hole machining. However, the chatter that occurs during the fine boring process is often the main cause of low precision hole machining, poor surface quality and low machining efficiency. In addition, chatter will accelerate the wear of the tool sys...
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IPC IPC(8): B23B29/02B23B47/26B23Q11/00B23Q15/007
Inventor 梅德庆孔天荣李欣
Owner ZHEJIANG UNIV