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Precision machining registration method based on double-reference constraint

A benchmark and registration technology, applied in the direction of instruments, computer control, simulators, etc., can solve the problem of losing the positional relationship of the cylindrical surface, etc., and achieve the effect of reducing time and improving position accuracy

Active Publication Date: 2020-02-28
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will cause the surface to be processed to be matched with the blank, but the finished surface loses its positional relationship with respect to the cylindrical surface datum

Method used

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  • Precision machining registration method based on double-reference constraint
  • Precision machining registration method based on double-reference constraint
  • Precision machining registration method based on double-reference constraint

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Embodiment Construction

[0029] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical The orientations or positional relationships indicated by "straight", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should ...

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Abstract

The invention discloses a precision machining registration method based on double-reference constraint. The method comprises the following steps of S1: obtaining a plane theoretical reference and a cylindrical theoretical reference respectively according to a plane and a cylindrical surface; S2: respectively detecting a surface to be processed, a plane and a cylindrical surface of a part to obtaina detection point for the surface to be processed, a plane detection point and a detection point for the cylindrical surface, respectively; S3: moving from the plane fitting reference / cylindrical surface fitting reference to the plane theoretical reference / cylindrical surface reference to obtain a first translation vector T1 and a first rotation matrix R1, and transforming the detection point ofthe surface to be processed according to the first translation vector T1 and the first rotation matrix R1; S4: establishing a local coordinate system according to the plane theoretical reference and the cylindrical theoretical reference, and establishing a registration model with two datum plane constraints in the local coordinate system; and S5: outputting a final calculation result. The invention is applied in the field of machining.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a finishing registration method based on double reference constraints. Background technique [0002] In the field of aviation manufacturing, there are high-demand assembly relationships among a large number of parts. For this type of parts, the positions of the mounting plane and the mounting hole (or mounting shaft) are extremely important, and other geometric features need to first ensure the positional relationship between the mounting plane and the mounting hole (or mounting shaft). The installation plane of such parts is usually perpendicular to the installation hole (or installation axis), and the preparation has been completed before the finishing of the key profile, and the surface to be finished has only a small amount of machining allowance. For example, in the blade finishing process of the overall blisk of an aero-engine, a datum plane and a datum hole ...

Claims

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Application Information

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IPC IPC(8): G05B19/402G05B19/401G05B19/408
CPCG05B19/401G05B19/402G05B19/4086
Inventor 朱燏肖世宏王文理
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST