Testing device and manufacturing method for radial stiffness of scroll plate spring of linear compressor

Abstract

The invention discloses a linear compressor scroll plate spring radial stiffness testing device and a manufacturing method thereof. The testing device is formed by an upper lug, a positioning pin, a cover plate, a base, a fixed screw, a fixed nut, a lower lug, an inner washer, an outer washer, an inner gasket and an outer gasket. The inner edge and the outer edge of a scroll plate spring are respectively fixed through the testing device of the invention, thus the stress directions of the inner edge and the outer edge are strict radial directions and are completely overlapped, the stress bias and bending deformation generated in a scroll plate spring radial stiffness test is eliminated to the maximum so as to accurately measure the displacement of the plate spring under radial stress and the corresponding intensity value and changing trend, the comparison and reference of accurate measured data are provided for the design and manufacture of the scroll plate spring, and the device has positive effect for the optimal design of the scroll plate spring and the development of a linear compressor.

Description

technical field [0001] The invention relates to a detection technology of a plate spring in a linear compressor, in particular to a testing device and a manufacturing method for radial stiffness of a scroll plate spring of a linear compressor. Background technique [0002] Linear compressor (or linear compressor) is a kind of reciprocating piston compressor, and it is also an innovative reciprocating piston compressor. It uses a linear motor to drive the piston to make a reciprocating linear motion in the cylinder, which theoretically completely eliminates the radial force on the piston, thus eliminating the mechanical wear between the piston and the cylinder wall and the resulting useless work, working life and The energy conversion efficiency has been greatly improved, so it has very important applications in special fields such as aviation, aerospace, and military that require long life, high reliability, and high efficiency. For example, most of the two most widely used...

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Problems solved by technology

Therefore, in practice, the test device used for measuring the radial stiffness of the spiral leaf spring is very strict. It needs to fix the inner and outer edges of the leaf spring, and can strictly control the force direction on a straight line; especially difficult Yes, the two directions of force are the radial direction of the spiral leaf spring, and the spiral leaf spring is generally a thin sheet with a thickness of less than 1.0mm, which adds many difficulties to the measurement of radial stiffness

Since the development of long-life Oxford-type linear compressors is still in its infancy in China, there are not many special testing devices for the radial stiffness of its scroll plate springs.

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