Interval adaptive planning method for five-axis machining feed speed

A feed rate, self-adaptive technology, used in instruments, digital control, control/regulation systems, etc., can solve problems such as difficulty in application, affecting the stability of feed motion, and heavy computational burden, achieving high computational efficiency.

Active Publication Date: 2020-04-10
HARBIN ENG UNIV
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Problems solved by technology

However, the above method is mainly suitable for conventional spline curve paths with short lengths. For paths with large lengths, iterative planning on the overall path is bound to be difficult to apply due to the large computational burden. If the entire long spline If the curved path is planned in sections, the speed needs to be reduced to zero at the transition position, which will affect the stability of the feed motion

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  • Interval adaptive planning method for five-axis machining feed speed
  • Interval adaptive planning method for five-axis machining feed speed
  • Interval adaptive planning method for five-axis machining feed speed

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] The purpose of the present invention is to overcome the defects of the prior art, and to invent an interval self-adaptive planning method for five-axis machining feed rate. The method applies a forward-looking window to cut off the influence of the curve shape outside the window on the feed rate planning of the current position, based on The differential principle plans the feed rate profile that satisfies the constraints of the axis driving capability area by area, and realizes the efficient generation of the feed rate of the five-axis long spline curve path. The technical solution of the present invention is an interval self-adaptive planning method for five-axis machining feed rate, which is characterized in that the method is based on the differential principle, determines the allowable motion parameters of the current interval, and calculates the drop rate und...

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Abstract

The invention belongs to the technical field of robots and high-grade numerical control machine tools, and particularly relates to an interval adaptive planning method for five-axis machining feed speed. Based on application of a look-ahead window, the influence of the out-of-window curve morphology on the current interval feed speed planning is cut off; allowable feed parameters of a current interval and a look-ahead interval are calculated based on a differential principle; and the feed speed profile of the current interval is planned according to the allowable feed parameters of the previous interval, the current interval and the look-ahead interval, so that regional look-ahead planning of the overall feed speed of the long spline curve path is achieved. The calculation efficiency is high, and the machine tool performance can be fully utilized on the premise that feed shaft driving capacity constraints are met.

Description

technical field [0001] The invention belongs to the technical field of robots and high-end numerically controlled machine tools, and in particular relates to an interval self-adaptive planning method for five-axis machining feed speed. Background technique [0002] For the high-end five-axis linkage CNC system, spline curve interpolation is a necessary advanced interpolation function, and in order to realize spline curve interpolation processing, reasonable planning of the feed speed of the curve path is the basis and premise . If the feed speed is too high, it will cause one or more of the five feed axes to exceed the driving capability range, which will induce machining vibration. If the feed speed is too low, it will inevitably affect the processing efficiency. Therefore, how to meet the requirements of the feed axis Under the constraints of driving ability, planning the feed rate of five-axis CNC machining that fully utilizes the performance of machine tools has become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/416
CPCG05B19/4163G05B2219/36521
Inventor 宋得宁钟宇光
Owner HARBIN ENG UNIV
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