数控机床刀具补偿中的信息分析

文章从刀具补偿中的信息出发,主要阐述了当前数控机床刀具补偿过程中应该注意的事项,针对加工中心、数控铣床刀具补偿的指令进行了详细的介绍.     

刀具补偿功能在数控加工中的应用

刀具补偿是数控加工中经常遇到的问题,该文首先从刀具补偿指令入手,就刀具半径补偿和刀具长度补偿在数控车削加工、数控铣削加工和加工中心加工中的应用进行了阐述。     

巧用FANUC系统的刀具半径补偿功能

介绍了对刀尖补偿功能的作用、原理和使用方法 ,以车轮轮缘踏面的加工程序为例 ,说明刀具半径补偿功能的具体应用     

巧用FANUC系统的刀具半径补偿功能

介绍了对刀尖补偿功能的作用、原理和使用方法,以车轮轮缘踏面的加工程序为例,说明刀具半径补偿功能的具体应用。     

Pro/ENGINEER NC加工中的刀具半径补偿

一、引言 在轮廓加工时,刀具中心运动轨迹与所需加工零件的实际轮廓的偏移量称为刀具半径补偿.刀具半径补偿在NC加工有着非常重要的作用,根据刀具补偿指令,数控加工机床可进行刀具半径尺寸补偿.特别是在手工编程时,刀具半径补偿尤为重要.     

立式数控铣削刀具半径补偿功能的运用

在数控铣床零件加工过程中,由于刀具的磨损、现场实际刀具尺寸与编程时规定的刀具尺寸不一致和更换刀具等原因,都会直接影响最终加工尺寸,造成加工误差.为了最大限度地减少因刀具尺寸变化等原因造成的误差,目前数控铣床通常都具有刀具半径补偿功能,根据输入的修正补偿量和程序自动地加工出优质零件,否则,很难保订加工精度.同时,使用刀具半径补偿,实现了根据零件轮廓直接编程的巨变,大大简化了编程工作量.冈此,理解刀具半径补偿并能正确灵活地使用刀具补偿功能,将起到事半功倍的效果,将刀具补偿和变量编柞结合使用,还可实现一些复杂曲面的加工,在数控切削加工中有较强的实用价值.     

对数控铣削加工中刀具补偿的探讨

合理设置刀具半径补偿值,灵活应用刀具半径补偿功能,对简化数控铣削编程有着非常重要的意义。文章分析常用的刀具半径补偿方式,以FANUCOi系统为例,探讨C刀具半径补偿。     

计算机数控的半径补偿

刀具半径补偿的主要目的是将轮廓轨迹转化为刀具中心轨迹。在计算机数控中常用的刀具半径补偿是采用直线过渡方式。本文主要叙述了四种不同情况时的补偿算法,即直线-直线,直线-圆弧,圆弧一直线,圆弧-圆弧。最后述及了刀具半径补偿程序编制中的一些问题。例如比例因子的引入,运算精度的提高及实时性。     

刀具半径补偿常见错误及问题分析

数控加工具有加工精度高、效率高和质量稳定等特点,而合理掌握刀具补偿方法,灵活应用刀具补偿功能,合理设置刀具半径补偿值,是保证精度和质量稳定的重要因素.但是在数控编程加工编程的过程中,还经常出现一些刀具半径补偿功能应用上的错误,因此,有必要对数控加工的刀具半径补偿方法进行探讨.     

刀具半径补偿在CNC编程中的错误及正确应用

在CNC编程中,合理地引入刀具半径补偿,可以使刀具轮廓轨迹的处理变得更简单.但是,由于使用刀具半径补偿要遵循很多相应法则,因此造成些编程员刻意避开使用刀具半径补偿.本文将从以下几个方面对刀具半径补偿在实际应用中出现的错误加以分析,并给出一些有益的建议,希望能够为读者提供解决此类问题的一些基本方法和思路.     

自动化车床管理的仿真及优化设计

该文通过对自动化车床100次刀具故障的记录进行数理统计分析,研究了自动化车床连续加工单一零件时刀具的检测及更换模型。首先利用概率大样本场合的D检验方法证明了刀具的故障发生规律服从正态分布,继而求出系统工序的寿命分布函数,列出以零件单位期望损失为目标,关于检测间隔和刀具定期更换间隔为变量的优化模型,最后利用计算机进行列举比较求解,从而得出取得最大经济效益的系统工序的最优检测间隔以及最优刀具更换策略。     

Using spreadsheet to teach on-line statistical process control

This paper gives the design considerations for on-line statistical process control (SPC) using spreadsheet software. The system combines a data acquisition system, data translation board, spreadsheet package, and a microcomputer. The objective of this paper is to demonstrate, by means of examples, how a microcomputer spreadsheet software and a data translation board can be used to teach on-line SPC as an alternative to the expensive commercial SPC software. Moreover, in the training and education environment, computer simulated data can be used for different case studies. Experience in using this approach to teach on-line SPC will be described.     

8031单片机在自动剪板机上的应用

介绍了自动剪板机系统的结构组成和工作原理，叙述了8031单片微机实现其生产过程控制的硬件与软件的设计方法。     

Implementation of a fast programmable edge detection preprocessor

The initial preprocessor stage of a symbolic Image Classification Computer has been designed in low power Schottky TTL. Image data from a camera is processed by a set of programmable, but identical boards controlled by a single MC68000 16-bit microcomputer. The programmable edge detector board may process data rates of up to 10 MHz, and is designed specifically for integration into a single VLSI design. Applications are presented for the Sobel and Kirsch operators.     

32位微机实验系统的设计与开发

为了利用现有的微机原理实验箱进行32位微机原理实验教学,该文介绍了一种32位微机原理实验系统的设计方法,该方法通过微机系统内部PCI总线扩展出低速ISA总线接口信号,从而将微机系统内的部分资源引出并利用,对实验箱上的模块进行操作并进行实验。利用该实验系统可全面支持＂微机原理与应用＂及＂微机接口技术＂的各项实验内容。     

国际象棋电子棋盘设计

介绍了以STC89系列单片机为核心,利用轻触开关设计电子棋盘的方法,给出了棋子种类识别、棋子定位方法和相应的程序流程图。开发电子棋盘具有价格低廉、简洁易用的特点。     

CH340T模块的程序下载电路故障及解决方法

本文根据经典的CH340T模块下载电路,设计制作了基于STC89 C52单片机的最小系统板.针对该板无法下栽程序的问题,提出了一种增加稳压电容的解决方案.经实验验证,本方案能够有效地解决该问题.     

汽车驾驶模拟器仪表驱动系统的设计与实现

介绍了汽车驾驶模拟器仪表驱动系统的设计方案和实现方法,水温表和油量表采用仪表驱动引脚与地之间串接电阻的方法进行驱动,时速表和发动机转速表采用单片机输出频率信号驱动,在时速表和发动机转速表驱动的算法实现中采用了最小二乘法进行线性关系拟合。采用该方案设计的驱动系统具有较好的可靠性和实用性,有一定的参考价值。     

Micro-machining processes for microsystem technology

By means of experiments it could determined that micro-machining processes as grinding, drilling and milling are a good addition to the established production technologies in micro technology. To machine hard and brittle materials grinding with diamond tools is well suitable, but the kinematics of the grinding process, as well as the process strategy has a significant influence on the machined surface quality and the chipping of the edges. The study of micro-machining processes showed, that micro cutting processes are not just a miniaturisation of the conventional cutting technology. The reduced tool stiffness of micro drills caused by the changes of geometry requires an adjustment of the complete drilling processes. Sharp cutting edges are an essential requirement for the fabrication of very small structures. So, using single edged micro milling cutters made of diamond significant smaller structures could be made compared to using conventional milling cutters made of tungsten carbide. Furthermore, acoustic emission sensors proved to be suitable for detecting the tool position after a change of the tool with a high accuracy.     

A sensor fusion and support vector machine based approach for recognition of complex machining conditions

During the machining process of thin-walled parts, machine tool wear and work-piece deformation always co-exist, which make the recognition of machining conditions very difficult. Existing machining condition monitoring approaches usually consider only one single condition, i.e., either tool wear or work-piece deformation. In order to close this gap, a machining condition recognition approach based on multi-sensor fusion and support vector machine (SVM) is proposed. A dynamometer sensor and an acceleration sensor are used to collect cutting force signals and vibration signals respectively. Wavelet decomposition is utilized as a signal processing method for the extraction of signal characteristics including means and variances of a certain degree of the decomposed signals. SVM is used as a condition recognition method by using the means and variances of signals as well as cutting parameters as the input vector. Information fusion theory at the feature level is adopted to assist the machining condition recognition. Experiments are designed to demonstrate and validate the feasibility of the proposed approach. A condition recognition accuracy of about 90 % has been achieved during the experiments.