An Embedded Error Software Compensation Method Applicable to Hybrid CNC Machine Tool
A numerical control machine tool and software compensation technology, which is applied in general control systems, program control, computer control, etc., can solve the problems that the compensation accuracy cannot achieve the expected effect, the error source is complicated, and the error parameters cannot be reflected, etc., and the error measurement is convenient , improve efficiency and reduce time-consuming effects
Active Publication Date: 2020-12-08
TIANJIN UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the complex composition of error sources in actual situations, the tool space pose error will be affected by various machine tool errors at the same time, and the established error mapping model often needs to be simplified and cannot reflect all error parameters. Therefore, in some cases, the compensation accuracy cannot achieve the expected effect
[0005] Although it is difficult to completely separate all error sources, the error at the end of the tool caused by the machine tool error can be detected, and there is continuity and correlation between the tool pose error
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0035] Before introducing specific embodiments, a hybrid numerical control machine tool is first briefly introduced. Such as figure 1 As shown, the parallel motion module of the hybrid CNC machine tool is A3 parallel head, which can provide translation along the Z axis and rotation around the X and Y axes. The rotation angles are A and B respectively, and the Z axis stroke is 200mm, A / B The angular range is ±40 degrees; the slide table motion module is an X / Y moving platform, which can provide translation along the X and Y axes, and the X-axis stroke is 1000mm, and the Y-axis stroke is 500mm. Here the input codes of the control system are x, y, z, α, β (x, y, z represent the positio...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an embedded error software compensation method applicable to a serial-parallel numerically-controlled machine tool. The embedded error software compensation method comprises the following steps: mapping an error source influencing a motion of the serial-parallel numerically-controlled machine tool into a pose error of a tail end of a cutter, building a prediction model forthe pose error of the cutter by virtue of a measured value of an error at a sample point, and calculating a pose error of the cutter at any position in a work space of the machine tool according to the prediction model without acquiring an error compensation value of the tail end of the cutter by adopting an error mapping model, so that time consumed by tedious calculation in a CPU of a controlleris shortened, a real-time error compensator can be designed in a numerical control system on the basis of the principle, and error compensation effect is improved.
Description
technical field [0001] The invention relates to the field of hybrid numerical control machine tools, in particular to an error compensation method for hybrid numerical control machine tools. Background technique [0002] The hybrid CNC machine tool meets the needs of multi-axis machining by combining 2 or 3 degrees of freedom parallel modules and 2 degrees of freedom serial modules. It has a large working space, good dynamic and static performance, high mechanical rigidity, and strong reconfigurability And other advantages, can meet the processing needs of large structural parts. In foreign countries, this kind of hybrid CNC machine tool is usually used in the aerospace field. [0003] The main factor that restricts the machining accuracy of CNC machine tools is the dynamic and static errors of the machine tool, which will cause the actual pose of the tool to deviate from the ideal pose, so the pose accuracy of the tool must be improved. There are two ways to solve this pr...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/35408
Inventor 倪雁冰范贺鹏陈俊杰周海洋贾石磊
Owner TIANJIN UNIV