Spring tension testing machine

1、 Basic concepts and principles:

Resolution:GTH-500Spring tension testing machineThe minimum indication difference that the indicator device can effectively distinguish.

Remaining height: The height of an object after the spring deforms under external force, represented by H.

Spring free length (height): The length value of a spring when both ends are stretched or compressed without any external force applied.

Deformation amount: The relative displacement of a spring along the direction of the load, the height of its deformation (free height residual height), represented by Δ H.

Spring stiffness: The load or torque required to deform a spring per unit length (keratin), expressed in N/mm as K=(F2-F1)/(H2-H1).

Average stiffness: The average value of the segmented stiffness of a spring.

The spring tension and compression testing machine introduced below is made in accordance with the technical requirements specified in the Chinese mechanical industry standard JB/T 7796 "Spring Tension and Compression Testing Machine" and JIS B7738-2001 "Compression and Tension Coil Spring Testing Machine", and calibrated according to JJF1134-2005 "Calibration Specification for Special Working Force Measuring Machines".

2、 Introduction to mechanical structure and control program:

The host part draws on the design concepts and appearance structure of domestic and foreign manufacturers, while strictly following the industry standards and specifications of the Ministry of Machinery. The overall structure and stiffness of the machine are designed and manufactured strictly according to the requirements of spring testing, with the characteristics of beautiful appearance, high stiffness, reasonable structure, convenient testing, and easy maintenance; Unlike ordinary electronic tensile testing machines from domestic manufacturers, the entire machine uses three columns with high-precision ball screws, and the pressure plate and tension hook are also separately designed and specially treated (with HRC hardness of over 50), making its processing accuracy, strength, and overall rigidity much higher than electronic tensile testing machine models.

Control program: The control unit of this machine is a micro operating system independently developed by our company. Its design and development concept refers to the same controller in the market, drawing on the strengths of others. The main control chip adopts Atmel microprocessor imported from the United States, and the analog-to-digital conversion chip is AD chip produced by international IC manufacturer ADI. Combined with our company's mature control method, the accuracy, practicality, convenience, stability, and automation level of the whole machine are at the industry level. The control display screen adopts a 7.0-inch industrial grade comprehensive touch screen, which has the characteristics of long lifespan, stable performance, wide viewing angle, and high resolution.

GTH-500Spring tension testing machineEnvironment and working conditions:

a) Room temperature within the range of 10 ℃ -35 ℃; Relative humidity not exceeding 80%;

c) In a clean environment without vibration, corrosive media, and strong electromagnetic interference around;

d) The fluctuation range of the power supply voltage should be within ± 10% of the rated voltage;

e) Install correctly on a solid foundation.

3、 Main technical parameters

4、 Quality Assurance

The equipment warranty period is one year from the date of delivery. During the warranty period, the supplier shall provide timely and free maintenance services for various non-human faults of the equipment, and after-sales maintenance shall be responded to by phone within 4 hours. Timely and free replacement of various parts damaged by non-human factors; For various types of parts damage caused by human factors, only cost fees will be charged. If the equipment malfunctions during use outside the warranty period, the supplier shall provide timely service to the purchaser, actively assist the purchaser in completing repair tasks, and provide lifelong maintenance.