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Measurement point creating method based on on-line measurement technology

A measurement technology and measurement point technology, which is applied in the field of online measurement of mechanical processing, can solve problems such as the inability to create measurement points in batches at one time, the inability to perform compensation and measurement paths, and the inability to create measurement points uniformly, so as to reduce manual participation and use The effect of wide range and shortening the time of point layout

Active Publication Date: 2016-12-07
西安精雕软件科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole process needs to input the coordinates and directions of measurement points one by one, which is cumbersome and error-prone; only simple graphics are supported, and measurement points cannot be created for space curves and surfaces; measurement points cannot be created uniformly; measurement points cannot be created in batches at one time; Perform compensation and measurement path optimization

Method used

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  • Measurement point creating method based on on-line measurement technology
  • Measurement point creating method based on on-line measurement technology
  • Measurement point creating method based on on-line measurement technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Create measurement points based on location points: This method has two creation methods, which can generate measurement points by inputting coordinates of points or existing points.

[0048] 1). Create measurement points by inputting points

[0049] The measurement point can be any point in space, and the measurement point that meets the requirements can be achieved by modifying the coordinates and detection direction of the space point.

[0050] 2). Create measurement points by existing points

[0051] see figure 1 As shown, the existing position points are needed in the figure, and the appropriate measurement points are created on the basis of this point.

[0052] Creating a measurement point through existing location points is divided into the following steps:

[0053] A1. Select a spatial location point to obtain the spatial location point information;

[0054] A2. Select the surface to be detected to obtain the basic information of the surface;

[0055] A3. U...

Embodiment 2

[0059] Create measurement points based on curve: This method is to create measurement points on the curve, which can be divided into single point creation and multi-point creation.

[0060] 1).Create a measurement point with a single point on the curve

[0061] see figure 2 As shown, by picking the position of the curve and the point to be created, the coordinates and direction of the point can be calculated, and the measurement point on the curve that meets the requirements can be created, specifically:

[0062] B1. Select the curve to be detected, obtain the curve information, and calculate the curve parameter domain information;

[0063] The calculation of the parameter domain is to obtain the parameter domain information by converting the curve into a parameter equation representation;

[0064] B2. Using the parameter field information obtained in step B1, calculate the position point on the current curve as the position information of the measurement point;

[0065] C...

Embodiment 3

[0078] Create measurement points based on a surface

[0079] see Figure 4 As shown, this method creates measurement points on the surface by picking the surface, which is divided into single point creation and multi-point creation.

[0080] 1). Manually create measurement points on the surface

[0081] By picking the position of the surface and the point to be created, the coordinates and directions of the point can be calculated, and the measurement point on the surface that meets the requirements can be created.

[0082] Project the current position point onto the surface and convert it into a position point on the surface; calculate the tangent plane of the surface through this point, and use the vector passing through this point and perpendicular to the tangent plane as the normal vector of the surface at this point.

[0083] 2) Automatically create measurement points on the surface

[0084] The user selects the corresponding detection area by picking the surface, and ...

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Abstract

The invention discloses a measurement point creating method based on on-line measurement technology. The method comprises following steps: obtaining point, line or surface information on a to-be-machined model to obtain curve parameter field information; obtaining position information and detection direction of measuring points according to parameter field information and curve normal direction so that the multiple measurement points are created; and generating a measurement path during an on-line measuring system and compensating the path and optimizing. The measurement point creating method based on on-line measurement technology has following beneficial effects: working load is reduced; working efficiency is raised; a usage range is wide; the method supports a plurality of types and different kinds of models to create measuring points; participation of people is minimized and error rate is lowered.

Description

【Technical field】 [0001] The invention belongs to the technical field of on-line measurement of mechanical processing, and in particular relates to a method for creating measurement points based on the on-line measurement technology. 【Background technique】 [0002] In product processing, due to problems such as workpiece deformation, secondary clamping, and origin error, there will be situations where the theoretical workpiece model is seriously inconsistent with the actual workpiece model, resulting in low product yield, high processing costs, and heavy labor burden. [0003] On-line measurement technology is a technology that realizes automatic detection of workpiece processing quality on the machining center. Using this technology, it can be used for part alignment, workpiece contour, deformation compensation of curved surface, on-machine inspection of the processing process, etc., to improve processing efficiency and reduce Accumulation of small errors improves processin...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/367
Inventor 王浏宁赵丹阳
Owner 西安精雕软件科技有限公司
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