The contouring system is used on lathes, milling machines, grinders, welding machinery, and machining centers.
轮廓式系统常用于车床铣床磨床焊接设备和加工中心。
Movement along the path, or interpolation, occurs incrementally, by one of several basic methods. In all interpolations, the path controlled is that of the center of rotation of the tool. Compensation for different tools, different diameter tools, or tool wear during machining, can be made in the NC program.
沿着路径的运动或以增量差补是几个基本方式的一个在所有的差补中要控制刀具的回转中心定位补偿可以以不同直径及刀具磨损在数控程序中进行改写。
There are a number of interpolation schemes that have been developed to deal with the various problems that are encountered in generating a smooth continuous path with a contouring-type NC system. They include:
有一些已形成差补方案来处理数控系统中连续路径和加工系统产生的问题包括
Linear interpolation
线性差补
Circular interpolation
圆弧差补
Helical interpolation
螺旋线差补
Parabolic interpolation
抛物线差补
Cubic interpolation
立体差补
Each of these interpolation procedures permits the programmer (or operator) to generate machine instructions for linear or curvilinear paths, using a relatively few input parameters. The interpolation module in the MCU performs the calculations and directs the tool along the path.
每一种差补程序都允许程序源产生加工指令适用于相对少的输入参数的直线或曲线路径。储存在数控单元中的模块预算指引工具沿计算出的路径运动
Linear interpolation is the most basic and is used when a straight-line path is to be generated in continuous-path NC.
线性差补是最基本的差补方法用于连续路径的数控系统中。
Two-axis and three-axis linear interpolation routines are sometimes distinguished in practice, but conceptually they are the same. The programmer is required to specify the beginning point and end point of the straight line, and the feed rate that is to be followed along the straight line.
两轴和三轴线性差补路线在实际中有时会分辨出的但在概念上他们是一样的程序源要明确指 定直线的起点和缺点及沿直线的进给率。
The interpolator computes the feed rates for each of the two (or three) axis in order to achieve the specified feed rate.
差补需计算两轴或三轴的进给速率以达到设定的进给速度。