The difference in stiffness between testing machines

What are the main reasons for the difference in stiffness between testing machines?

1. Is the structural design of the testing machine reasonable? The commonly used B-type testing machine with two columns and two screws cannot catch up with the D-type testing machine with four columns and two screws.

2. Will the use of labor and materials be too economical? If the column is too thin or the upper and lower beams of the testing machine are too thin, it will affect the rigidity of the testing machine.

If the materials used are too poor, choosing low specification and inferior steel will also cause the stiffness of the testing machine to be too poor.

4. The materials that need to be tempered due to labor shortage are not tempered; The material that needs to be quenched will also result in different stiffness if not quenched;

The main purpose of the Li Ling testing machine is to resolutely eliminate the four aspects that may lead to poor stiffness, such as the use of labor and materials, and to choose the best from the best, without stealing work or reducing materials, to ensure the high stiffness of the testing machine host