Light spring washer elasticity test device

Abstract

The utility model belongs to the technical field of acceptance test of metal fasteners, and relates to an elasticity test device for a light spring washer. Comprising an upper through hole pressing block, flat washers, a base and a stand column, the base is cylindrical, a threaded hole is formed in the circle center of the base, the threaded end of the stand column is in threaded connection with the threaded hole, the flat washers penetrate through the stand column, and the upper through hole pressing block penetrates through the stand column and is pressed on the flat washers. Pressure is applied to the upper through hole pressing block through a testing machine, the springback height of the sample spring washer is measured after the pressure is released, and the purpose of detecting the elastic performance of the sample spring washer is achieved. And the upper through hole pressing block with a general specification is adopted, so that repeated operation is reduced, the test efficiency is greatly improved, the test time is shortened, and the device has a relatively high application value.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal fastener acceptance test technical field, a kind of light spring washer elastic test device. BACKGROUND

[0002] According to GJB5861-2006 "Stainless Steel Spring Washer General Specification" and GJB5862.2-2006 "Stainless Steel Spring Washer Part 2: Light Spring Washer", light spring washer of nominal diameter d=3, d=4, d=5, d=6, d=8 and other specifications needs to be detected for elasticity and toughness performance. The existing test tooling has the following problems: 1. The existing tooling structure is complex, and assembly is complex; 2. Only one sample can be detected for performance in each test process; 3. The existing tooling has certain safety hazards during handling and use. INVENTION CONTENTS

[0003] 1. Technical problem solved

[0004] In the existing light spring washer elastic test, the tooling fixture has certain replacement difficulty and maintenance difficulty. In the test, due to the multiple specifications and large number of sample pieces, the original tooling fixture has multiple types, and the replacement of tooling fixture is cumbersome, and there is certain safety risk in the replacement process, which affects the efficiency of related tests. The tooling fixture does not need to replace the base, reduces the safety risk, uses two specifications of universal pressure blocks, reduces the replacement frequency, increases the gasket, can detect five samples at the same time, improves the test production efficiency, reduces the handling frequency and reduces the safety risk.

[0005] 2. Technical scheme

[0006] To solve the above technical problems, the utility model is realized by the following technical scheme: a light spring washer elastic test device, comprising an upper through-hole pressure block 1, a flat washer 2, a base 3, a stand 4, the base 3 is cylindrical, a threaded hole is arranged at the center, the threaded end of the stand 4 is screwed with the threaded hole, the flat washer 2 passes through the stand 4, the upper through-hole pressure block 1 passes through the stand 4 and is pressed on the flat washer 2, during test, the sample spring washer 5 is arranged between two flat washers 2, the upper through-hole pressure block 1 is pressed by the testing machine, and the rebound height of the sample spring washer 5 is measured after releasing the pressure, to achieve the detection purpose of the elastic performance of the sample spring washer 5.

[0007] Further, the upper through-hole pressure block 1 is made of 30CrMnSiNi2A material. Because 30CrMnSiNi2A has high strength and low brittleness, it can ensure the stability and consistency of the test process when the test load is applied.

[0008] Further, the number of flat washers 2 should be consistent with the number of sample spring washers 5.

[0009] Further, the flat washer 2 is of cylindrical structure.

[0010] Further, the diameter of the flat washer 2 should be greater than the diameter of the sample spring washer 5, to ensure that it can completely cover the sample spring washer 5 under pressure.

[0011] Further, the base 3 is made of 30CrMnSiNi2A material.

[0012] Further, the column 4 is made of 30CrMnSiNi2A material.

[0013] Further, the upper through-hole pressing block 1 and the column 4 are clearance fit.

[0014] Technical effects

[0015] The utility model provides a light spring washer elasticity test device, has increased different specifications' detachable column, avoided the problem that test needs frequently changes, carries the tool fixture, ensured the safety of test personnel in the test process, has adopted the upper through -hole pressing block of general specification, reduced the repeated operation, improved test efficiency greatly, shortened test time, has greater application value, the fixture base does not need to change, can play certain protection test personnel's function, improved safety, only needs to change corresponding column according to test piece specification in whole test, can realize quick replacement dismounting, and because uses the upper general pressing block, reduced the frequency of changing test pressing block according to sample specification, saved time, improved test production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is light spring washer elasticity test device structure schematic view;

[0017] Figure 2 It is threaded base schematic view;

[0018] Figure 3 It is detachable column;

[0019] Figure 4 It is test process schematic view.

[0020] 1 - upper through -hole pressing block, 2 - flat washer, 3 - base, 4 - column, 5 - sample spring washer DETAILED DESCRIPTION

[0021] Before the test, according to the sample specification, the corresponding specification of 4-dismountable column and 3-threaded base are selected to be screwed into connection, after the connection, 5-sample spring washer and 2-flat washer are sequentially threaded into 4-column, finally 1-upper through-hole pressing block is threaded through 4-dismountable column and is pressed tightly on the top 2-flat washer. Finally, the whole is placed into the test machine platform for testing.

[0022] The elastic test method is: after the spring washer is continuously loaded three times according to the specified test load, the free height is measured. Before the test, according to the sample specification, the corresponding 4-dismountable column is selected to be connected with 3-threaded base. Further, 5-sample spring washer and 2-flat washer are threaded into 4-dismountable column in sequence, further, 2-flat washer is used to separate each sample, further, 1-upper through-hole pressing block is sleeved into 4-dismountable column and is placed on the uppermost 2-flat washer, further, the spring washer elastic performance test is carried out.

Claims

1. A light spring washer elasticity testing device, characterized in that, Including upper through-hole pressing block (1), flat washer (2), base (3), column (4), the base (3) is cylindrical, the center is provided with threaded hole, the threaded end of the column (4) is screwed with the threaded hole, the flat washer (2) passes through the column (4), the upper through-hole pressing block (1) passes through column (4) and is pressed on the flat washer (2), when testing, sample spring washer (5) is arranged between two flat washers (2), the pressure is applied to the upper through-hole pressing block (1) by testing machine, the rebound height of sample spring washer (5) is measured after releasing pressure, reaches the detection purpose of the elastic performance of sample spring washer (5).

2. The apparatus of claim 1, wherein, The upper through-hole pressing block (1) is made of 30CrMnSiNi2A material.

3. The apparatus of claim 2, wherein, The number of the flat washer (2) should be consistent with the number of the sample spring washer (5) to be tested.

4. The apparatus of claim 3, wherein, The flat washer (2) is cylindrical structure, and the diameter of the flat washer (2) should be greater than the diameter of the sample spring washer (5), so that the sample spring washer (5) can be completely covered when pressing.

5. The apparatus of claim 4, wherein, The base (3) is made of 30CrMnSiNi2A material.

6. The apparatus of claim 5, wherein, The column (4) is made of 30CrMnSiNi2A material.

7. The apparatus of claim 6, wherein, The upper through-hole pressing block (1) and the column (4) are gap fit.

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