Pipe thread measuring method using three-dimensional measuring device
Through the three-dimensional measurement device in the thread detection of oil pipe fittings, the cylindrical coordinate system and rotary coordinate system technology is used to solve the problems of cumbersome detection and low accuracy in the existing technology, and fast and accurate thread detection is achieved, suitable for negative angle threads.
CN115127489BActive Publication Date: 2025-01-07BAOSHAN IRON & STEEL CO LTD
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Patent Information
- Application Number
- CN202110323734.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-03-26
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2041-03-26
Smart Images
Figure CN115127489B_ABST
Abstract
The present invention discloses a pipe thread measurement method implemented by a three-dimensional measuring device. The method includes: the three-dimensional measuring device measures three points on the reference end face of the pipe, determines the thread reference plane based on the three points measured, and constructs a first cylindrical coordinate system with the thread reference plane; measures the pipe thread based on the first cylindrical coordinate system to obtain the axis of the pipe thread; constructs a second cylindrical coordinate system with the thread reference plane and the axis of the pipe thread; measures the pipe thread based on the second cylindrical coordinate system to determine the thread reference deviation angle; rotates the second cylindrical coordinate system around the Z axis by the thread reference deviation angle to obtain the thread measurement reference coordinate system; and measures the pipe thread based on the thread measurement reference coordinate system. The pipe thread measurement method of the present invention can realize automatic, rapid and accurate measurement of pipe threads using a three-dimensional measuring device, and can measure threads with negative angles on the thread bearing surface.
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