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Measuring method for in-site measurement of free-form curved surface based on machining machine tool

A technology of in-situ measurement and measurement method, which is applied in the direction of metal processing machinery parts, metal processing equipment, measurement/indicating equipment, etc., can solve the problems of time-consuming and low efficiency, improve measurement efficiency, measure flexibly, and avoid data processing and the effect of the error analysis

Inactive Publication Date: 2011-04-06
TIANJIN UNIV
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Problems solved by technology

In addition, it is also a difficult problem to obtain the surface shape error by comparing the measurement data with the design data. Due to the huge amount of data, there will be time-consuming and low-efficiency problems in the data comparison and adjustment.

Method used

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  • Measuring method for in-site measurement of free-form curved surface based on machining machine tool
  • Measuring method for in-site measurement of free-form curved surface based on machining machine tool
  • Measuring method for in-site measurement of free-form curved surface based on machining machine tool

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Embodiment Construction

[0022] figure 1 System schematic diagram of the present invention. The measuring head 3 adopts an air-floating probe measuring system, and is installed on the ultra-precision machining lathe together with the machining tool. After position alignment, the coordinates of the measurement control point of the probe 3 and the Y coordinate of the tool machining control point are consistent, and the X-axis deviation between the two is a definite amount. During the process of measuring the surface of the workpiece to be processed, the probe 3 is simulated as the machining tool 2, and the measurement path is designed in a design method similar to the machining path. When the probe 3 moves according to the set ideal measurement path, the probe is controlled to move at the ideal coordinate point (X, C, Z). During the measurement process, due to the use of an air-floating probe, it is driven by the measurement air pressure. The stylus will keep moving forward in the measuring direction ...

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Abstract

The invention belongs to the field of a mechanical machining and detecting technique, relating to a measuring method for the in-site measurement of a free-form curved surface based on a machining machine tool, which comprises the following steps: (1) a measuring head and the cutter bracket of a machining cutter are arranged on the machining machine tool, and the position alignment of a measuring control point to a cutter control point is carried out; (2) the design of a machining route is carried out, and a workpiece is machined; (3) the measuring head is simulated into the machining cutter, and the measuring route is designed according to the designed machining route; (4) the point-to-point control measurement is carried out according to the measuring route; and (5) the surface shape error data of the measuring head measured in the position of the measuring control point is collected in real time, and the obtainment of the surface shape error data on the surface of the integral workpiece is realized by obtaining the surface shape error data of the measuring point. The measuring method has the advantages that the surface shape error data can be directly obtained and the later data treatment and the error analysis of the mass measuring data can be avoided by adopting the measuring method; and the measuring efficiency can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing and detection, and relates to an in-situ measurement method of a free-form surface. Background technique [0002] With the rapid development of aviation, aerospace, communication and other industries, free-form surface parts are more and more widely used in modern industry. high demands. In machining, in order to improve the surface shape accuracy of the processed workpiece, it is generally necessary to use measurement technology to perform cyclic correction of surface shape errors. At present, most of the workpiece measurement adopts the offline method, because the workpiece to be measured needs to be removed from the machine tool, and the free-form surface has the characteristics of non-rotational symmetry, irregular shape, irregular structure, etc., it is difficult to determine the positioning datum to achieve reinstallation Accurate reset and machining accuracy are difficult to...

Claims

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Application Information

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IPC IPC(8): B23Q17/20
Inventor 房丰洲张效栋卢永斌
Owner TIANJIN UNIV
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