Composite intelligent deep hole processing shock absorber and optimal auxiliary support position self-moving control method

A composite, shock absorber technology, applied in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., can solve problems such as unsatisfactory vibration damping effect, and achieve the effect of compact structure, fast response, and good vibration damping effect.

Active Publication Date: 2018-08-31
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of manually moving the auxiliary support position blindly based on experience and the unsatisfactory damping effect in the current deep hole processing process, the present invention provides a composite intelligent deep hole processing shock absorber and an optimal auxiliary support position self-moving Control Method

Method used

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  • Composite intelligent deep hole processing shock absorber and optimal auxiliary support position self-moving control method
  • Composite intelligent deep hole processing shock absorber and optimal auxiliary support position self-moving control method
  • Composite intelligent deep hole processing shock absorber and optimal auxiliary support position self-moving control method

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Embodiment

[0057] Experimental parameters: tool diameter is 18.91, drill pipe length is 1800, inner diameter is 11.5 and outer diameter is 17, Young's modulus E is 2.06*10 11 pa, processing alloy steel material, its density is 7.87*10 3 , processing depth 200, cutting fluid density 866kg / m 3 .

[0058] Solve the above equation to determine the position of the first auxiliary support , when the drilling depth ;Pick , to obtain the first five natural frequencies of the drill pipe, respectively 39.538, 103.718, 200.477, 329.390, 490.571; take , to obtain the first five natural frequencies of the drill pipe, respectively 39.261, 103.362, 200.016, 328.823, 482.325; Each value unit The natural frequency of the drill pipe at the node, while the cutting parameters such as the length and speed of the drill pipe remain unchanged during the machining process, compared with the natural frequency at each node, the optimal When , its natural frequency is 35.318, 98.630, 189.329, 318.469, 4...

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Abstract

The invention belongs to the technical field of mechanical design and manufacture, and aiming at solving the technical problems that in the present course of deep hole machining, an auxiliary supporting position is manually and blindly shifted by experience and the effect of vibration absorption is not ideal, the invention provides a combined type intelligent vibration absorber for deep hole machining and an automatic shifting control method for optimal auxiliary supporting positions. The combined type intelligent vibration absorber for deep hole machining comprises a magnetorheological fluid damper, a mechanical damping system and an automatic shift control system, wherein the magnetorheological fluid damper comprises a magnetorheological fluid cavity and a vibration absorption disk; the vibration absorption disk is installed in the magnetorheological fluid cavity; a supporting clapboard groove is arranged outside the magnetorheological fluid cavity; a hot-wire coil is wound around the supporting clapboard groove; and the magnetorheological fluid damper and mechanical damping system are installed on the automatic shift control system. The combined type intelligent vibration absorber has a unique structure and is of an important meaning for effectively inhibiting vibration of a deep hole drill rod, improving the deep hole machining accuracy and realizing intelligent digital control of a high-grade deep hole machining tool.

Description

technical field [0001] The invention belongs to the technical field of mechanical design and manufacturing, and in particular relates to a composite intelligent deep hole machining shock absorber and a method for controlling self-movement of an optimal auxiliary support position. Background technique [0002] Deep hole processing is an important branch of the equipment manufacturing industry, which is widely used in military industry, aviation, aerospace, high-speed rail, machine tools, engines, automobiles, energy mining and other fields. Due to the special functions of deep hole parts, deep hole parts often become the key parts that determine product quality and efficiency. In particular, modern mechanical products have higher and higher requirements on function and structure, and deep hole processing is constantly developing towards high precision, high efficiency, and intelligence. The uniqueness has resulted in the inherent disadvantages of poor rigidity system, diffic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B41/02B23Q11/00
CPCB23B41/02B23Q11/0032
Inventor 张煌沈兴全李耀明翟宁
Owner ZHONGBEI UNIV
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