基于单片机的CH3240-MC液压比例转塔车床数控改造

针对CH3240-MC液压转塔车床,研制了基于单片机、LCD液晶显示器、中文显示、G代码编程的数控系统。对该机床进行了数控改造,使停止运行的机床重新投入生产,为机床改遣提供了参考。     

微小车床对刀间隙检测技术

本文设计了一种应用于微小车床对刀的二维对刀间隙检测装置,采用正交方式布置构建光学图像测量系统,建立了基于图像处理技术的微小车床对刀间隙检测系统;利用标准量块对光学系统进行精确标定,并应用于微小车床进行微小对刀间隙的测量.将对刀间隙光学检测系统安装在自研的微小车床上,通过车床微动平台施加微小位移进行系统验证.实验结果表明:该检测装置能够快速有效地进行微小车床对刀间隙识别与检测,系统检测精度达±15μm.实验同时验证了对刀间隙检测算法的正确性,可用于微小车床的精密对刀.     

废旧车床改装为可组合式实验装置的设计研究

将废旧的普通卧式车床改装为可组合式实验装置很有经济价值,将车床按用途或性能划分为若干机床模块,通过改变或替换某些模块使之成为加工某工序的专用机床。这些模块能够组合成一系列不同功能的专用机床,成了零件加工的可组合式实验装置。文中重点介绍了某工序的改装组合过程。     

能加工特长齿条的数控车床

针对齿条的特点,给出了在数控车床上进行加工的方法。分析了加工的切削运动,给出了刀具运动轨迹曲线以及对通用数控车床的改造设计。     

Non-circular cutting with a lathe using a three-stage intelligent controller

In this paper, a three-stage intelligent controller (TSIC) for non-circular cutting with a lathe (NCL) is developed. In the first stage, an effective neural network is used to learn the dynamics of the voice coil servomotor system. Then a modified zero-phase tracking control (MZPTC) based on the learned model is designed to obtain an acceptable tracking result. Because MZPTC is a type of feedforward control, its performance cannot be ensured as the system is subjected to external load or the aging of system components. In the second stage, an adaptation in control input generated by a fuzzy sliding-mode control is then synthesized with the previous MZPTC to ameliorate control performance. The third stage is to use a forecast compensate control to compensate the cutting error caused by the variant cutting depth (or cutting force). The experimental results of NCL using TSIC, including tracking accuracy (i.e. profile error of finished workpiece) and smoothness of control input (i.e. surface roughness of finished workpiece), are much improved.     

钻具车修中心架和作业线装置的研制

通过对钻具螺纹车修减振中心架与作业线装置的研制．解决了钻具螺纹车修过程中，因钻具振动造成的车床损坏和车修质量问题。实现了钻具上下车床的半自动化．提高了工作效率，减轻了劳动强度，保证了钻具螺纹的车修质量。     

类复向量矩阵在转位车刀几何角度计算中的应用

采用类复向量矩阵计算可转位车刀的几何角度，使坐标变换次数和被变换的向量的数目明显减少，计算过程简单、方便。     

Equivalent fatigue load in machine-tool probabilistic reliability. Part II: Calculation methodology and practical applications

This paper deals with the calculation and practical application of equivalent fatigue load in probabilistic reliability. To illustrate the physical meaning and practical use of the theoretical formulae derived in Part 1 of this paper, Part II considers the design example of a multicut semi-automatic lathe. It analyses the power and torque characteristics and special statistical law of load and speed change for the lathe. Equivalent fatigue loads with specified reliability for the important driving elements of the lathe under various working conditions are found on the basis of calculating the reliability factor, the power utilization and the speed change factor. Use of the equivalent fatigue load determined in the paper to design the lathe elements would enable it to obtain the expected reliability.     

PCBN刀具在微凸桶形滚轮加工中的应用

通过精密微凸桶形滚轮的加工难点的分析,指出应用PCBN刀具实现"以车代磨"的可行性。通过制定合理的加工工艺、设计专用工装、选择合适的刀具及几何参数、优化切削参数,解决了微凸桶形滚轮精密加工的难题,实际加工结果表明,该工艺方案可行,具有一定的推广价值。     

基于单工位超长大直径铝棒车床的设计

本文介绍了一种能加工超长大直径铝棒的车床,设计加工铝棒长度6000mm,直径168mm,且可调整用来加工直径100mm～168mm之间任意尺寸的铝棒。该机床主切削速度为316000mm/min,进给速度最大为900mm/min,且变频可调。