A compression and rebound testing device for shrapnel

Abstract

This utility model discloses a compression and rebound testing device for spring sheets. The device includes a support platform, a support column, a pressure device, a fixing device, and a measuring scale. The support platform serves as a base, and its surface is provided with a measuring area for placing the spring sheet. The support column is adjustablely mounted on the support platform through multiple mounting holes. The pressure device is mounted on the support column, and its lower end is provided with a vertically movable downward pressure head that can apply pressure to the spring sheet. The fixing device includes a fixed end, a slidably disposed moving end, and a rotary lock for clamping the spring sheet. The measuring scale is located near the fixed end, and its measuring direction is consistent with the movement direction of the downward pressure head. This device can realize rapid clamping, precise pressure application, and high-precision measurement of spring sheet rebound. It has the advantages of stable structure, flexible adjustment, and precise control, and is suitable for testing the compression and rebound performance of various spring sheet products.

Description

Technical Field

[0001] This utility model belongs to the field of experimental machinery technology, specifically relating to a compression and rebound testing device for a spring sheet. Background Technology

[0002] As a key elastic component in mechanical, electronic, and precision instrument fields, the performance of springs directly depends on the fatigue resistance of the material and the springback stability of the structure. In actual working conditions, springs are often under cyclic stress. After repeated compression and rebound, they are prone to failure phenomena such as plastic deformation, stress relaxation, and elastic modulus decay, which seriously affect the life and reliability of the whole machine. Therefore, high-precision and high-efficiency pressure rebound testing devices are of great engineering significance for the quality control, life prediction, and structural optimization of springs. High-quality testing equipment should be able to simulate real load conditions, realize controllable loading and unloading cycles, and accurately capture the deformation recovery behavior of springs under dynamic pressure, thereby providing data support for material selection, heat treatment process formulation, and reliability design.

[0003] Currently, common spring pressure testing devices have some shortcomings in terms of structural design, control accuracy, and functional integration. For example, most devices adopt a fixed clamping structure, which is difficult to adapt to springs with different curvatures and sizes. The clamping process is cumbersome and can easily lead to specimen eccentricity or slippage, introducing additional bending moments and affecting measurement accuracy. In addition, the loading part mostly relies on simple mechanical drive or manual control, making it difficult to achieve precise closed-loop control of load and displacement, and unable to reproduce the low-speed constant pressure or high-frequency cyclic loading conditions in actual working conditions.

[0004] Measurement systems typically employ mechanical scales or independent sensors, which suffer from problems such as large parallax errors, low sampling frequencies, and data asynchrony. They lack the ability to acquire and analyze key features such as rebound curves and hysteresis characteristics in real time. Furthermore, their overall architecture lacks rigidity and has poor anti-interference capabilities. In particular, they are susceptible to vibration or temperature drift during long-term cyclic testing, leading to data drift and severely affecting the repeatability and comparability of the tests.

[0005] In summary, there is an urgent need for a spring pressure rebound testing device with a high-rigidity structure, multi-axis adjustment capability, precision power control, and integrated measurement system to overcome the shortcomings of existing technologies. Utility Model Content

[0006] Based on some deficiencies of the prior art mentioned in the background and technology, this utility model proposes a compression and rebound testing device for a spring sheet, aiming to overcome the shortcomings of the prior art.

[0007] Through structural innovation and system integration, this device enables rapid adjustment of the spring clip clamping, precise control of pressure loading, and high-precision measurement of springback, significantly improving testing efficiency and data reliability. The following will introduce this device in detail.

[0008] A compression and rebound testing device for a spring sheet, the device comprising core components such as a support platform, a support column, a pressure device, a fixing device, and a measuring scale.

[0009] The support platform serves as the foundation of the entire machine. Its surface is equipped with a measurement area for stable placement of the spring sheet, and the bottom is provided with anti-slip pads or mounting holes to enhance the overall stability of the equipment during the testing process.

[0010] The support column can be adjusted and mounted on the support platform through multiple mounting holes. The installation position of the pressure device can be flexibly adjusted according to the height of the spring sheet to meet the testing requirements of different sample sizes.

[0011] The pressure device uses a pneumatic or electric pressure cylinder as a power source and achieves precise stroke and speed control of the lower pressure head through program control. It can simulate various working conditions such as constant pressure, step loading or cyclic compression, effectively improving the working condition coverage and data consistency of the test. Its lower pressure head can move vertically to the measurement area to apply controllable pressure to the spring sheet, ensuring that the load direction is consistent with the rebound measurement axis and reducing the measurement error caused by off-center loading.

[0012] The fixing device consists of a fixed end, a movable end, and a rotary lock, which will be described in detail below.

[0013] The fixed end is located on the side of the support platform near the support column, and the moving end slides smoothly through the bottom slider and the slide rail on the support platform. The clamping distance between the moving end and the fixed end can be quickly adjusted to accommodate spring pieces of different lengths.

[0014] The rotary lock uses a knob-type locking mechanism, which can lock the position of the moving end by rotating it to tighten it. It is easy to operate and the clamping is reliable.

[0015] The opposing surfaces of the fixed end and the moving end are provided with anti-slip textures or elastic pads to further enhance the anti-slip and protection effect on the spring sheet and prevent the sample from shifting or being damaged during the test.

[0016] The measuring ruler is set at or near the fixed end, and its measuring direction is consistent with the movement direction of the pressing head. It can be a high-precision ruler or a digital display measuring instrument, which can monitor and record the displacement changes of the spring in real time during the compression and rebound process, effectively avoiding parallax error and data delay, and providing accurate and stable rebound data output.

[0017] Beneficial effects:

[0018] In summary, the compression and rebound testing device for spring fragments provided by this utility model has the advantages of strong structural rigidity, flexible adjustment, precise control and accurate measurement. This device can effectively improve testing standards, testing efficiency and data quality, and provide reliable support for the quality control, performance evaluation and process optimization of spring fragment products. It has significant practicality and promotional value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a compression and rebound testing device for a spring sheet;

[0020] Figure 2 This is a schematic diagram of the support platform and support column of a compression and rebound testing device for a spring sheet;

[0021] Figure 3 This is a schematic diagram of the pressure device in a compression and rebound testing apparatus for a spring sheet.

[0022] Figure 4 This is a schematic diagram of the fixing device for a compression and rebound testing device for a spring sheet;

[0023] Figure 5 This is a side view of a compression and rebound testing device for a spring sheet;

[0024] Figure 6 This is a schematic diagram of the downward pressing section of the indenter of a compression and rebound testing device for a spring sheet;

[0025] Figure 7 This is a schematic diagram of the lower pressure head rising in a compression and rebound testing device for a spring sheet;

[0026] In the diagram, 1. support platform, 2. support column, 3. pressure device, 301. lower pressure head, 4. fixing device, 401. fixed end, 402. moving end, 403. rotary lock, 5. measuring ruler, 6. spring. Detailed Implementation

[0027] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0028] 1. Support platform, 2. Support column, 3. Pressure device, 301. Lower pressure head, 4. Fixing device, 401. Fixed end, 402. Moving end, 403. Rotary lock, 5. Measuring ruler, 6. Spring.

[0029] like Figure 1 As shown, the compression and rebound testing device for a spring sheet of this utility model mainly includes a support platform 1, a support column 2, a pressure device 3, a fixing device 4, and a measuring ruler 5.

[0030] like Figure 2As shown, the support platform 1 serves as the installation base and test platform for the entire device. Its surface is provided with a measurement area for placing the spring 6. This area is usually ground or marked to improve the placement accuracy. Anti-slip pads or mounting holes can be provided at the bottom of the support platform 1 to enhance the stability of the device during the test and avoid displacement caused by external forces or vibrations.

[0031] The support column 2 is vertically installed on the support platform 1. Multiple sets of mounting holes, preferably bolt holes, are provided on the column body. The pressure device 3 is installed on the mounting holes by bolt connection. The initial height of the pressure device 3 can be flexibly adjusted according to the testing requirements of different springs 6.

[0032] like Figure 3 As shown, the pressure device 3 is installed on the mounting hole of the support column 2. It can use a pneumatic pressure cylinder or an electric pressure cylinder as a power source. Its lower end is connected to a vertically movable pressure head 301. The pressure head 301 achieves precise stroke and speed adjustment through program control. It can simulate various actual working conditions such as pressure holding and cyclic loading. The movement path of the pressure head 301 is perpendicular to the surface of the support platform 1 to ensure that the load applied to the spring 6 is in the same direction and avoids off-center loading.

[0033] like Figure 4 As shown, the fixing device 4 is used to clamp the spring piece 6 to prevent it from moving or shifting during the test. The fixing device 4 includes a fixed end 401, a movable end 402 and a rotary lock 403. The fixed end 401 is fixedly installed on the support platform 1 and close to the support column 2. The movable end 402 slides smoothly through a slider at its bottom and a slide rail on the support platform 1, thereby adjusting the clamping distance between it and the fixed end 401. The rotary lock 403 is located on the side of the movable end 402 and generally adopts a knob-type locking mechanism. After tightening, it can firmly lock the position of the movable end 402. Anti-slip textures or elastic pads can be added to the opposite surfaces of the fixed end 401 and the movable end 402 to enhance the fixing effect of the spring piece 6 and prevent surface damage.

[0034] like Figure 5 As shown, the measuring ruler 5 is set on or near the fixed end 401, and its measuring direction is consistent with the movement direction of the pressing head 301. The measuring ruler 5 can be a mechanical high-precision ruler or an electronic digital display measuring instrument, used to monitor and record the displacement changes of the spring 6 in the compression and rebound process in real time, so as to ensure the accuracy and synchronization of the data.

[0035] like Figure 6 , 7As shown, in the actual test process, the spring piece 6 is first placed on the measuring area of ​​the support platform 1, the moving end 402 is adjusted to clamp the spring piece 6 together with the fixed end 401, and locked by the turnlock 403. Then, the installation position of the pressure device 3 on the support column 2 is adjusted according to the height of the spring piece 6, the pressure device 3 is started, the lower pressure head 301 presses down according to the set program and applies load to the spring piece 6. During the compression and rebound process, the deformation of the spring piece 6 is read or recorded in real time by the measuring ruler 5, thereby evaluating its rebound performance.

[0036] This utility model has a reasonable structure, high rigidity, convenient adjustment, and high measurement accuracy, and is suitable for testing the compression and rebound performance of various types of spring products.

[0037] Implementation example:

[0038] The following specific usage example further illustrates the implementation of this utility model.

[0039] Suppose we need to test the rebound performance of a metal shrapnel. The shrapnel is 60 mm long, 15 mm wide, and has an initial height of 10 mm.

[0040] First, place the support platform 1 on a stable workbench and ensure it does not move by using the bottom anti-slip pad. Place the spring piece 6 at the center of the measuring area on the surface of the support platform 1, loosen the rotary lock 403, and push the moving end 402 to slide along the slide rail so that the fixed end 401 and the moving end 402 clamp the two ends of the spring piece 6. Then tighten the rotary lock 403 to lock the position of the moving end 402. The anti-slip texture on the fixing device 4 can effectively prevent the spring piece from sliding.

[0041] Based on the initial height of the spring 6, select a suitable mounting hole on the support column 2, and install and fix the pressure device 3 with bolts. In this example, an electric pressure cylinder is selected as the pressure device 3, and the downward stroke of the pressure head 301 is set to 5 mm, the downward speed is 1 mm per second, and the holding time is 3 seconds through an external control program.

[0042] When the pressure device 3 is activated, the pressure head 301 begins to move downwards, contacts the spring 6 and continues to press down to the predetermined stroke. At this time, the spring 6 is compressed. The measuring scale 5 monitors and records the compression displacement in real time. After the holding time is reached, the pressure head 301 returns to the initial position at the speed set by the program. The spring 6 begins to rebound. The measuring scale 5 continuously monitors the displacement change during the rebound process until the spring 6 returns to stability.

[0043] By measuring the maximum compression displacement and the final rebound displacement data read by ruler 5, the rebound rate of the spring can be calculated and its elastic performance can be evaluated. The entire test process is simple to operate and the data is accurate and reliable, demonstrating the practical effectiveness of this utility model.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compression and rebound testing device for a spring sheet, characterized in that, include: Support platform, support column, pressure device, fixing device and measuring scale: The support platform serves as a base, and its surface is provided with a measuring area for placing spring clips; The support column is adjustablely mounted on the support platform, and the support column is provided with multiple mounting holes for adjusting the height; The pressure device is installed on the mounting hole of the support column, and its lower end is provided with a vertically movable pressure head. The pressure head can move downward to the measuring area and apply pressure to the spring sheet. The fixing device includes a fixed end, a movable end, and a rotary lock. The fixed end is fixedly mounted on the support platform and adjacent to the support column. The movable end is slidably mounted on the support platform to adjust the distance between it and the fixed end. The rotary lock is located on the side of the movable end and is rotated to lock the position of the movable end. The measuring ruler is set on or near the fixed end, and its measuring direction is parallel to the movement direction of the pressing head.

2. The compression and rebound testing device for a spring sheet according to claim 1, characterized in that, The pressure device is a pneumatic or electric pressure cylinder, and its lower pressure head is controlled by a program to control the lower pressure stroke and speed.

3. The compression and rebound testing device for a spring sheet according to claim 1, characterized in that, The mobile terminal has a slider at its bottom and a slide rail on the support platform that matches the slider. The mobile terminal slides back and forth through the cooperation of the slider and the slide rail.

4. The compression and rebound testing device for a spring sheet according to claim 1, characterized in that, The aforementioned rotary lock is a knob-type locking mechanism, which fixes the moving end to the support platform by tightening.

5. The compression and rebound testing device for a spring sheet according to claim 1, characterized in that, The measuring ruler is a high-precision scale ruler or a digital display measuring instrument, and its scale direction is consistent with the spring return direction.

6. The compression and rebound testing device for a spring sheet according to claim 1, characterized in that, The fixed end and the movable end are provided with anti-slip textures or elastic pads on their opposite surfaces to enhance the fixing effect on the spring sheet.

7. A compression and rebound testing device for a spring sheet according to any one of claims 1 or 2, characterized in that, The mounting holes on the support column are bolt holes, and the pressure device is adjusted by bolts engaging with the bolt holes.

8. The compression and rebound testing device for a spring sheet according to claim 1, characterized in that, The bottom of the support platform is equipped with anti-slip pads or mounting holes to enhance overall stability.

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