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Detection device of large-scale section-bar three-dimensional bending component and detection method thereof

A technology of detection device and detection method, applied in the direction of measurement device, mechanical counter/curvature measurement, instrument, etc., can solve the problems of high cost, large floor space, large number of inspection tools, etc., to achieve convenient detection, reduce manufacturing cost and The effect of space occupation

Active Publication Date: 2017-02-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this detection method requires a set of inspection tools for each part. The number of inspection tools is high, the cost is high, and the floor area is large. It is not suitable for the inspection and measurement of multiple varieties and small batches of parts.

Method used

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  • Detection device of large-scale section-bar three-dimensional bending component and detection method thereof
  • Detection device of large-scale section-bar three-dimensional bending component and detection method thereof
  • Detection device of large-scale section-bar three-dimensional bending component and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A detection device for three-dimensional bending parts of large profiles is composed of a detection workbench 1 , 15 height brackets 5 , 27 detection templates 11 and three positioning support templates 9 . The bracket 5 is fixed on the detection workbench 1 , and the detection template 11 and the positioning support template 9 are respectively positioned and installed on the bracket 5 through two equidistant holes on the column. The upper surface of the detection table 1 is a reference plane in the height direction, and the detection table 1 is machined with a hole array of 120 positioning holes with a spacing of 100mm×100mm along the X coordinate direction and the Y coordinate direction.

[0055] The bracket 5 is composed of a base and a column, the column is square, and there are 5 positioning holes equidistantly arranged along the height direction, and the hole spacing is 100mm. The distance between the two positioning holes is 50mm; there are two positioning holes ...

Embodiment 2

[0057] The detection of the workpiece should first determine the positioning datum of the workpiece 10 to be inspected. The positioning datum should ensure that the workpiece 10 is accurately positioned on the detection device and is easy to measure, and the workpiece 10 should be placed on the detection device stably and reliably. Since the three-dimensional bending part of the profile belongs to the elongated bending part, the workpiece 10 is generally formed by drawing, bending and twisting, and there is generally neither a plane nor a straight line thereon. Therefore, we choose the cross-sectional profile of the three-dimensional mathematical model of the workpiece as the positioning reference of the detection device. Since the workpiece is generally arc-shaped, in order to ensure the stability of the workpiece, at least three cross-sectional profiles should be selected as the positioning reference.

[0058] A three-dimensional mathematical model of a three-dimensional ben...

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Abstract

The invention belongs to the mechanical engineering technology field and relates to a detection device of a large-scale section-bar three-dimensional bending component and a detection method thereof. The device is formed by a detection work bench, at least one support, at least one detection sample plate and at least three positioning support sample plates. The support is fixed to the detection work bench. The detection sample plate and the positioning support sample plates are installed on the support respectively. In the invention, through measuring a gap value between a contour of the three-dimensional bending component located on the detection device and the detection sample plate on the detection device, a contour error value of a workpiece is determined, and a point coordinate value of a three-dimensional bending control curve of the workpiece at a detection sample plate cross section can be measured. The detection device constructs a positioning reference of the large-scale section-bar three-dimensional bending component and a cross section contour detection reference. Because the support can be arranged arbitrarily on the detection work bench, the device can adapt to detection and measurement of various kinds of section-bar bending components. The device belongs to a flexible detection device.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and relates to a detection device and a detection method for a three-dimensional bending part of a large profile, which is suitable for on-site rapid detection of the contour of a workpiece in the manufacturing process of the three-dimensional bending part of a large profile. Background technique [0002] For the three-dimensional bending and forming workpieces of large profiles, the contour of the workpiece is a must-check item. There are two main detection methods. One is the measurement method using general measuring equipment. The commonly used measuring equipment includes three-coordinate measuring machine inspection and laser scanning measuring machine. Etc.; the other is a common method of measuring with integral inspection tools with other tools. [0003] Among the commonly used measuring equipment, large-scale coordinate measuring machines are expensive, occupy a large are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/20G01B21/20
CPCG01B5/20G01B21/20
Inventor 李义梁策赵继宋相军
Owner JILIN UNIV
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