System and method for measuring centre position and exradius of ring by utilizing snubber rolls

A technology of the radius of the outer circle and the position of the center of the circle, which is applied in the field of metal pressure forming and can solve the problem of inaccurate diameter of the ring

Inactive Publication Date: 2012-06-27
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the measured ring diameter is inaccurate

Method used

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  • System and method for measuring centre position and exradius of ring by utilizing snubber rolls
  • System and method for measuring centre position and exradius of ring by utilizing snubber rolls
  • System and method for measuring centre position and exradius of ring by utilizing snubber rolls

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Embodiment Construction

[0072] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0073] figure 2 Among them, the equipment connection diagram of the measurement system of the present invention includes: it is symmetrically provided with a holding roller I3 and a holding roller II9 on one side of the ring 1, and the two holding rollers are in contact with the outer wall of the ring 1.

[0074] The two holding rollers are respectively connected to the corresponding oil cylinder I5 and oil cylinder II7 through their respective holding arms I4 and holding arms II8. The inner wall of the ring 1 is provided with a core roller 2 in contact, and the outer wall is in contact with the main roller 6.

[0075] figure 1 In , the stroke s of the two cylinders at any time is measured by the built-in displacement sensors of the two cylinders 1 ,s 2 , the structural size of each component is a fixed value, the calculation diagram is as follows fi...

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Abstract

The invention discloses a system and a method for measuring the centre position and the exradius of a ring by utilizing snubber rolls. The system for measuring the centre position and the exradius of the ring by utilizing the snubber rolls comprises the ring. One side of the ring is symmetrically provided with a snubber roll I and a snubber roll II which are contacted with the outer wall of the ring; the two snubber rolls are respectively connected with corresponding oil cylinder II and oil cylinder II through respective snubber arm I and snubber arm II; corresponding displacement sensors arerespectively arranged in the two oil cylinders; the inner wall of the ring is provided with core rolls contacted with each other; and the outer wall of the ring is contacted with a main roll. According to the method for measuring the centre position and the exradius of the ring by utilizing the snubber rolls, a mathematical relation between the centre position and the exradius of the ring and thestrokes of the two oil cylinders is derived through establishing a system of rectangular coordinates. The strokes of the two oil cylinders, which are measured by the displacement sensors arranged in the oil cylinders, are substituted into calculation software, and thus, the numerical values of the instant centre position and the exradius of the ring can be obtained, and simultaneously, whether the ring deviates or not and the offset when the ring deviates can be discovered according to the centre position, and the out of roundness of the external diameter of ring can also be detected. By applying the method, a measuring roll system of a traditional ring rolling machine can be removed, the method is easy to implement, the cost is reduced, and the precision is higher.

Description

technical field [0001] The invention relates to a system and method for measuring the position of the center of a ring and the radius of the outer circle of the ring by using a holding roller, and belongs to the field of metal pressure forming. Background technique [0002] The radial-axial ring rolling machine is the key equipment for producing large-scale high-quality seamless ring parts such as wind power tower connection flanges, rocket launcher connection flanges, large slewing bearings for ground launches, nuclear island evaporators, and nuclear reactor vessels. During the ring rolling process, the measurement of the instantaneous ring diameter plays an important role in the final dimensional accuracy of the ring. Existing ring rolling machines usually measure the outer diameter of rings through measuring rollers, and the center of the measuring rollers is located on the line connecting the main roller and the core roller. When the center of the ring is located on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/00G01B21/10
Inventor 赵东徐增海王强蔡冬梅何芳谈玉龙
Owner UNIV OF JINAN
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