PORTABLE BRINELL TESTING APPARATUS

摘要

A portable Brinell testing apparatus that meets the ASTM E10 standard. Prior art attempts do not work because as the force is applied, the indenter travels into the material causing the springs to extend; therefore, lowering the load applied. The invention uses a constant force spring connected to a lever arm which is pivoted on a fulcrum. The mechanical advantage of the mechanism is able to provide a force of up to 3000 kg with a constant force spring that can be activated by the operator.

主权项

1. A Brinell testing apparatus for measuring the hardness of a test material positioned in said apparatus between an indenter in a holder and an elevated screw assembly such that said apparatus comprises:
a lever arm in communication with the indenter in the holder wherein said lever arm has a fulcrum at one end and wherein said lever arm has an eccentric cam at the other end such that the mechanical advantage of said lever arm is able to achieve a force of up to 3000 kg such that the mechanical advantage of said lever arm is able to achieve a force of up to 3000 kg by rotating said eccentric cam; constant force spring attached to the end of said lever arm adjacent to said eccentric cam such that force being applied to the indenter remains constant despite the movement of the indenter into the test material during the required time period of the test.