摆锤式试验机的改制普遍采用加游码和更换摆铊的办法。采用游码法,配件可批量生产,且不需调整游码质量,特别适用于计量部门对大批试验机的改制。用更换摆铊的方法改制时,要计算摆锤质量;游码法改制时,除应计算游码质量外,还要计算游码在摆杆上的位置。为此,本文就这两种改制方法的计算公式给予了推导和讨 Pendulum test machine commonly used to increase the system of change and put pendulum thallium method. The use of yan code method, parts can be mass-produced, and without adjusting the quality of yards, especially for the measurement department of a large number of testing machine restructuring. To replace the pendulum thallium method of restructuring, to calculate the quality of the pendulum; Tour code reform, in addition to should calculate the quality of the tour code, but also to calculate the position of the tour code on the pendulum. For this reason, this article gives the derivation and discussion of the calculation formulas of these two reforming methods