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High-efficiency machining control method for deep hole in oil pump casing

A control method and oil pump technology, which is applied in the field of mechanical deep hole processing, can solve the problems of weak tool rigidity and low cutting efficiency, optimize the cutting process path, improve processing stability and workpiece surface quality, and perform efficient and stable deep hole processing Effect

Active Publication Date: 2019-02-22
HUNAN INST OF TECH
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Problems solved by technology

In deep hole machining, due to the limitation of the tool diameter and the requirements of the cantilever length of the deep hole tool, the rigidity of the tool is weak, and it is difficult to use it to achieve high material removal efficiency. In order to meet the processing requirements, in the traditional deep hole machining More processes are used in the process, and the cutting efficiency is lower

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  • High-efficiency machining control method for deep hole in oil pump casing
  • High-efficiency machining control method for deep hole in oil pump casing
  • High-efficiency machining control method for deep hole in oil pump casing

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0046] A high-efficiency machining control method for deep holes in the oil pump housing of the present invention comprises the following steps:

[0047] S1. According to the dynamic equation of the cutting processing system, calculate the modal transfer function H of the cutting processing system 1 (ω,n);

[0048] S2. According to the processing depth, set a row of points evenly spaced from the tip of the tool to the end of the tool bar, a total of k points, which are marked as: 1, 2, 3, ..., k, through the modal test, in order to obtain the The modal (transfer) function of the node, set to H 3i (ω1), i=1, 2, 3, ..., k;

[0049] S3, through the modal transfer function H of the cutting processing system 1 (ω, n) and the modal transfer function of each node of the tool to establish the cutting process transfer function Φ of different nodes of the t...

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Abstract

The invention discloses a high-efficiency machining control method for a deep hole in an oil pump casing. The method comprises the following steps: calculating a modal transfer function of a cutting processing system and acquiring the modal transfer function; according to a processing depth, arranging one row of points successively and uniformly at intervals from a cutter point to the tail of a cutter rod, carrying out modal testing, and acquiring modal transfer functions of all joints of the cutter successively; on the basis of the modal transfer function of the cutting processing system andthe modal transfer function of each joint of the cutter, establishing cutting processing transfer functions phi1i of different joints of the cutter, and carrying out Laplace transform on the phi1i toobtain phi1i(s); according to the phi1i(s), acquiring stable regions under different joints of the cutter during cutting processing based on a method of solving a stable region by a frequency domain;and according to the cutting parameters of the stable regions, carrying out high-efficiency stable processing on a workpiece. According to the design, preferable cutting parameters are obtained accurately based on the dynamic characteristics of the cutter and the workpiece and the cutting processing path is optimized, so that high-efficiency and stable deep hole processing is realized and the machining stability of the cutting process and the surface quality of the workpiece are improved.

Description

technical field [0001] The invention relates to a mechanical deep hole processing method, in particular to an efficient processing control method for deep holes in an oil pump casing. Background technique [0002] The internal structure of the oil pump housing is complex. Since the lubricating coolant circulates in the internal pipeline, the surface morphology and residual height of the internal deep holes have become an important factor restricting the improvement of energy efficiency. In deep hole machining, due to the limitation of the tool diameter and the requirements of the cantilever length of the deep hole tool, the rigidity of the tool is weak, and it is difficult to use it to achieve high material removal efficiency. In order to meet the processing requirements, in the traditional deep hole machining More processes are used in the process, and the cutting efficiency is lower. Contents of the invention [0003] The present invention aims to solve the above-mentio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/19
CPCG05B19/19G05B2219/35349
Inventor 刘安民周唯陈雪林
Owner HUNAN INST OF TECH
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