Metal linear expansion coefficient measuring device based on Michelson interference method

A measuring device and metal wire technology, applied in the fields of electronics, machinery, and physics, can solve the problems of being greatly affected by the outside world and inconvenient operation, and achieve the effects of convenient operation, compensation of heat loss, and convenient automatic measurement

Inactive Publication Date: 2015-01-21
董赫
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The heating methods of various methods are resistance wire contact heating, and there are more or less defects such as inconvenient operation and great influence from the outside world.

Method used

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  • Metal linear expansion coefficient measuring device based on Michelson interference method

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Embodiment Construction

[0006] The invention consists of a Michelson interferometer platform (1) a heating tank (2) a metal rod (3) a displacement quartz rod (4) a fixed quartz rod (5) a fixed terminal (6) a rod loading platform in the groove (7) a heating wire (8) ) Temperature controller (9) Temperature sensor (10) Interferometer moving mirror (11) Interferometer light screen (12) He-Ne laser (13) Heating wire power supply (14) Resistance knob (15) Methyl silicone oil (16) . Together they form a heating and control system, and an optical system. Turn on the temperature controller (8) and the power supply of the heating wire (13), the tiny length change of the metal rod (2) after being heated is transferred to the moving mirror (10) of the interferometer through the displacement of the quartz rod (3), and then by the interference principle The halo is displayed on the interferometer light screen (11), and the length change is reflected in the form of indentation and emergence of the halo. The inden...

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Abstract

The invention is a metal linear expansion coefficient measuring device, and relates to the optical, electronic and physical fields. A Michelson interferometer platform (1), a heating groove (2), a metal rod (3), a displacement quartz rod (4), a fixed quartz rod (5), a fixed terminal (6), a groove internal rod loading table (7), a heating wire (8), a temperature controller (9), a temperature sensor (10), an interferometer movable mirror (11), an interferometer optical screen (12), an He-Ne laser (13), a heating wire power supply (14), a resistance rotary knob (15) and a methyl silicone oil (16) mainly together form a heating control system and an optical system. With utilization of an optical interference method, the precision for measurement of metal length changes is greatly improved. With integrative optimization of other key components, the safety and reliability of the device are improved, the operation is simpler, and the measurement is faster. The device is applicable to metal linear expansion coefficient measurement and slight length change measurement.

Description

technical field [0001] The invention relates to the fields of machinery, electronics, physics and the like. In particular, the application of optical principles to improve accuracy when measuring. Background technique [0002] Traditional methods for measuring the linear expansion coefficient of metals include optical lever method, laser lever method, and spiral micrometry. Various methods all use resistance wire contact heating in the heating mode, and there are more or less defects such as inconvenient operation and great influence from the outside world. This device is based on the Michelson interference principle to measure the metal linear expansion coefficient. By making a reasonable heating device and using an oil bath non-contact electric heating method, the oil bath can make the heat evenly and continuously transferred to the metal rod, avoiding the metal rod In the case that temperature unevenness affects measurement accuracy, the use of 12V DC heating wire power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/16G01B11/16
Inventor 董赫邓孟莹李佳祎
Owner 董赫
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