齿面加工精度基本上取决于机床的啮合参数,如刀具与工件的轴间距a_c和轴间角∑_c。这些参数确定了机床啮合线的理论正确位置,因而用来评定传动质量。通常,依螺旋副刀具产生的两个无隙啮合渐开线齿轮来研究机床的啮合。因为这种齿轮啮合基本上是变位啮合(传动中假定的齿轮啮合特性或刀具的重磨)、刀具几何参数的实际值不同于名义值,所以必须确定参数a_c和∑_c的需要值. 采用试切法,在每次调整几何尺寸参数后切削齿轮,这种生产情况增加了准备——结束时间,降低了机械加工生产率。在机床中装入数控系统,使齿轮啮合角、 Tooth surface machining accuracy basically depends on the engagement of the machine parameters, such as tool and workpiece axis spacing a_c and axis angle Σ_c. These parameters determine the theoretical correct position of the machine line of engagement and are therefore used to assess the drive’s mass. Normally, the meshing of the machine tool is studied with two meshless meshing involute gears generated by a helical sub-cutter. Because this gear meshing is essentially a variable meshing (assumed gear meshing behavior in the transmission or tool regrinding), the actual value of the tool geometry is different from the nominal value, so the values ​​of the parameters a_c and Σ_c must be determined. Trimming method, cutting the gear after each adjustment of the geometry parameters, this production increased the preparation - the end of time, reducing the machining productivity. In the machine into the CNC system, the gear meshing angle,