A Measuring Method for the Spatial Error of the Full Stroke of a Machine Tool
A technology of spatial error and measurement method, applied in measurement devices, instruments, optical devices, etc., can solve the problems of ineffective compensation, errors, and large amount of interpolation calculation, and achieve fast measurement, small calculation amount, and high precision. Effect
Active Publication Date: 2017-08-25
HUBEI UNIV OF ARTS & SCI +2
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Although this document can calculate the error compensation value of the spatial position of the machine tool through theoretical methods, due to the different structures of the machine tool, the measurement of the positive and negative directions of each error item often leads to errors if there is a little carelessness, especially the above method , due to the large amount of interpolation calculations during the operation of the machine tool, it is often impossible to implement effective compensation in time through the CNC system
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and 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. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0041] The invention provides a method for measuring the spatial error of the full stroke of a machine tool, comprising the following steps:
[0042] (1) According to the travel of X, Y, Z axes of the machine tool and the requirements of measurement data points (generally, the number of measurement points for a single feed axis is more than 10), determine the measurement distance ΔL, and determi...
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The invention discloses a measurement method for machine tool total travel space errors. The measurement method comprises the following steps of (1) determining a measurement gap [delta]L according to the each axis travel of a machine tool and requirements of each axis measurement data point, determining the space measurement point number of the machine tool according to [delta]L, and planning a measurement path; (2) installing each component of the machine tool and carrying out beam focusing, then running the machine tool to the coordinates zero of X, Y, Z axes; (3) measuring the error of all points on the planes in the total travel space of the machine tool in the order of measurement of the line, surface and space according to the planned measurement path; and (4) solving the error of any point in the total travel space of the machine tool according to the error of the measured point in the total travel space of the machine tool. The method can realize the measurement of the error of the total travel space of the machine tool through one-step installation and beam focusing, the measurement is quick, the error value is applied to the real-time compensation of the numerical control system, and the method has the advantages of small computation and high precision.
Description
technical field [0001] The invention belongs to the technical field of machine tool space error measurement, and more specifically relates to a method for measuring the full stroke space error of a machine tool. Background technique [0002] At present, mastering the measurement method of the machine tool error and the solution process of the compensation value is the prerequisite for improving the accuracy of the machine tool. For an ordinary three-axis vertical machine tool, the 6D laser interferometer produced by API can be used to easily measure its geometry. error. However, the existing measurement methods are all measured in a single-axis independent manner, that is, the geometric errors of the X, Y, and Z axes are independently measured first, without considering the influence of other axes on the measurement axis. Therefore, this measurement The method actually reflects the accuracy of the three feed axes, but not the accuracy of the machine tool space, especially t...
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IPC IPC(8): G01B11/00
CPCG01B11/002
Inventor 陈国华向华陈吉红刘克非汪云童光庆刘宏伟
Owner HUBEI UNIV OF ARTS & SCI