Measurement error analysis and solutions of universal testing machine

The commonly used test instruments in work can be said to be very accurate, but likeUniversal testing machineSuch precision equipment will inevitably lead to test errors. Jinan Hengsi Shanda Instrument Co., Ltd. conducted a detailed analysis and solution to this point.

1, force gauge part

When the dynamometer part is not installed horizontally, friction will occur between the swing shaft bearings, which will generally become a negative difference. The above two errors have a relatively large impact on small load measurements and a relatively small impact on large load measurements.

2, First of all, the host part

existUniversal testing machineWhen the main unit is not installed horizontally, friction will be caused by friction between the working piston and the working cylinder wall of the hydraulic universal testing machine, thereby generating errors. Generally, it is positive and as[2]The increase in load causes the error gradually smaller.

Solution:

1, First check whether the test machine is installed horizontally, and level the frame-type horizontal ruler in two directions where the outer rings of the working cylinder (or column) are perpendicular to each other.

2, adjust the front and back levels of the dynamometer on the front and back of the swing rod, align the edge of the swing rod with the inner line, and adjust the left and right levels of the body with a horizontal ruler against the side of the swing rod.

MoreUniversal testing machineAll information is available in Jinan Hengsi Shanda Instrument Email Company