“两点等弧法求渐开线代用圆弧”(下称等弧法,见本刊1982年第10期),具有计算简便、所得结果较准确等优点。但是,由于计算程序还是较长,在渐开线成形磨削加工前的工艺计算中,仍感费时。本文介绍一种用BASIC语言编制的程序,利用“等弧法”的计算公式,由AppleⅡ微型计算机,在2～3分钟内计算出渐开线代用圆弧半径(R)、中心坐标(T,N)及其代圆误差(DP)。由于BASIC语言所具有的通用性,该程序可以原封不动地(或稍加修改)用于其它型号的袖珍机或微型机。一、程序编制简介 “Two arcs and other methods for involute involute arc” (hereinafter referred to as arc method, see the publication of 1982 No. 10), with the calculation is simple, the results obtained more accurate and so on. However, since the calculation procedure is still long, it still takes time in the process calculation before the involute forming grinding. This article describes a program written in BASIC language, using the “equal arc method” formula, by Apple Ⅱ microcomputer, in 2 to 3 minutes to calculate the involute substitution arc radius (R), the center coordinates (T, N) and its rounding error (DP). Due to the versatility of the BASIC language, the program can be used intact (or slightly modified) for other models of pocket PCs or minicomputers. First, the introduction of programming