A bend pipe shape detection system and detection method thereof

A detection system and detection method technology, applied in the field of pipe bending, can solve the problems of long time consumption, high cost, large equipment investment, etc., and achieve the effect of eliminating the superposition of detection errors, avoiding the superposition of errors, and improving detection accuracy

Active Publication Date: 2016-08-10
NINGBO TRIZ AUTOMATIC EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this detection method cannot directly perform real-time detection on the pipe bending device. In the process of unloading and clamping the pipe fittings to the three-coordinate measuring instrument, it is easy to cause secondary errors. At the same time, this detection method is costly and time-consuming.
In order to solve this problem, technicians have developed a tube shape measurement system. The system obtains the tube shape data of bent pipe fittings in real time by scanning to obtain springback data for correction. However, the equipment used in this system has a large investment and the working data is not Intuitive, not suitable for batch inspection, only suitable for random inspection and trial production of products, so it is still inconvenient to use

Method used

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  • A bend pipe shape detection system and detection method thereof
  • A bend pipe shape detection system and detection method thereof
  • A bend pipe shape detection system and detection method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1~5As shown, a bend pipe shape detection system includes a numerically controlled pipe bender 1, a pipe shape detection device and a control system (not shown) for processing detection information. In this embodiment, the pipe shape detection device is a measuring distance A sensor 11, such as a laser ranging sensor, is installed on the CNC pipe bender 1 on the same plane as the processed pipe fitting 8 on the CNC pipe bender 1, and the output of the sensor 11 is connected to the detection information. Processing the input of the control system, the springback angle of the pipe 8 is calculated using geometrical principles. The CNC pipe bending machine 1 includes a frame 12 and a machine head 10. The frame 12 is provided with a feeding trolley 2 for fixing and pushing the pipe fittings 8. The machine head 10 is provided with a main mechanism for clamping the pipe fittings 8 in cooperation with the pipe bending die 7. The clamp 4 and the auxiliary clamp 6...

Embodiment 2

[0044] Such as Figure 1~3 As shown, different from Embodiment 1, the pipe shape detection device in Embodiment 2 includes an auxiliary clamp 6 and a second servo motor 5 used to control the action of the auxiliary clamp 6, that is, directly uses the auxiliary clamp 1 of the CNC pipe bender 1. The clip 6 and the second servo motor 5 are used as a sensor for measuring distance to detect the rebound distance of the pipe fitting 8, the output of the second servo motor 5 is connected to the input of the control system for processing the detection information, and the output of the control system is connected with the control system simultaneously. The input of the second servo motor 5 is connected, and the detection information is fed back to control the action of the auxiliary clamp 6 through the second servo motor 5. The principle is: the auxiliary clamp 6 of the CNC pipe bending machine 1 is controlled by the second servo motor 5. The auxiliary push clamp arm moves up, and once...

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Abstract

The invention relates to a curved pipe shape detection system and a detection method. The curved vascular detection system comprises a numerical control pipe-bending machine, a pipe shape detection apparatus and a control system used for processing the detection information, the pipe shape detection apparatus used for measuring the rebound distance of the pipe is arranged on the numerical control pipe-bending machine, and is positioned at same plane with a processing pipe fitting of the numerical control pipe-bending machine; the pipe shape detection apparatus is connected to the control system, and a rebound angle of the pipe fitting can be calculated by using a geometry principle. According to the invention, the rebound distance of the pipe fitting can be measured according to the distance change between the pipe shape detection apparatus and the pipe fitting before and after rebound, so that a rebound value of the pipe fitting can be rapidly calculated. In the invention, the curved pipe shape detection system enables on-line direct detection on the numerical control pipe-bending machine, secondary error due to multitime clamping can be avoided, the detection system and detection method are convenient and fast, and the detection system is suitable for batch detection, error overlaying between multiple bends of the pipe fittings can be avoided, and detection precision can be enhanced.

Description

technical field [0001] The invention relates to the field of pipe bending processing, in particular to a pipe shape detection system and a detection method thereof. Background technique [0002] Pipe fittings are widely used in various industrial fields such as shipbuilding, automobiles, and aviation. Many of them are pipe fittings with curved shapes. Since the bending process of the pipe belongs to elastic-plastic bending, the springback phenomenon will inevitably occur after the bending unloading. Specifically, the springback phenomenon refers to the deformation of the pipe during the bending process, which is subjected to external force and is bent into an angle. When a bend After the processing is completed, the external force is removed, and the bent pipe part returns to its original shape, resulting in the actual bending angle of the pipe being less than the predetermined bending angle, and the length of the straight section of the pipe will be larger than the required...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C51/00B21D7/12
CPCB21C51/00B21D7/12
Inventor 陆志伟
Owner NINGBO TRIZ AUTOMATIC EQUIP
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