当不具备渐开线检查仪时,可在“万工显”上用改制的灵敏杠杆,通过测量齿廓诸点的基圆展开长度ρ_x与理论值之差而测出齿轮渐开线的误差。这种方法符合渐开线形成原理,可测模数不小于1、外径不大于100毫米的圆柱正齿轮和斜齿轮以及齿轮刀具的渐开线,测量数据稳定可靠。今介绍如下。 When do not have involute tester, can be used in the “million workers significant” restructuring of the sensitive lever, by measuring the profile of the basic circle of the basic circle expansion length ρ_x and the theoretical difference between the measured gear involute error . This method accords with the involute formation principle, the measurable modulus is not less than 1, the outer diameter is not greater than 100 mm cylindrical spur and helical gears and involute gear tools, the measurement data is stable and reliable. Now introduce as follows.