机床

In this chapter the author expounded the origin of the concept of Free-form generators, pointed out that it is the certain result of the development of synchronous multi-axis CNC technology, explained the basic principle of the machining of extended epicycloid bevel gears on Free-form generators and the methods for both hardware and software implementation.

论文第2章是全文的基础，在这一章中，作者论述了Free-form型机床概念的由来，指出它是多轴联动数控技术发展的必然结果；阐述了Free-form型机床加工延伸外摆线锥齿轮的基本原理及其软硬件实现方式；将机床控制系统分解为包含两根虚拟主轴的有两组独立联动的八轴八联动系统；建立了Free－form型机床的数学模型；推导了展成运动速度、加速度及高阶加速度的表达式，为后续的理论分析奠定了基础。

With a view to lessen this effect and by referring to the wear pattern,the methods of design and computation of the guideway are thoroughly studied.

本文通过机床导轨的磨损试验，研究机床导轨的磨损规律，研究导轨磨损后所引起的刀架或工作台横向偏移和偏转，研究导轨磨损后对机床加工精度的影响；并从导轨磨损后使其尽可能不影响机床加工精度的观点出发，研究导轨按磨损规律的设计与计算。

Taken the three dimensional shining metal combination machine tool as an object of study in the paper,the main structure and motion form have been discussed and the work process and control requirement of machine tool have been analyzed,the movement cycle diagram of machine tool and the motion table of hydraulic pressure component have been given.Then the control system design based on PLC has been proposed,the I/O address table has been listed and the hardware and software of the control system has been de...

文章以三面铣组合机床为研究对象，通过对主要结构和运动形式的探究以及对机床的工作过程和控制要求分析，给出了机床动作循环图、液压元件动作表；并采用PLC控制系统的设计方法，列出了I/O地址分配表，进行了软硬件设计，绘制了 PLC的外部接线图和单循环自动工作流程图及其说明；实验运行结果表明，将PLC技术应用于三面铣组合机床具有整体技术及经济效益。

Those problems include inverse position analysis of the machine, inverse and direct position analysis of the parallel locking mechanism, relationships of velocity and acceleration between cutter and actuators, Jacobian matrix of the machine, forward position computation of the machine, the links'velocity and acceleration of the driving chains, the links'velocity and acceleration of the locking mechanism, kinematics simulation of the machine, and so on. The Jacobian method presented in the thesis to calculate the direct position of the machine is of high efficient.

其中包括机床的位置逆解分析，平行机构的位置逆解分析，机床刀具与各主动关节之间的速度和加速度映射关系的求解，并联机床雅可比矩阵的计算，并联机床的位置正解计算，支链构件的速度和加速度计算，平行机构各构件的速度和加速度计算以及机床各运动学指标的仿真计算等。

The tongs all passes in the machine the gearing on the bed what tongs the gearing on realizes with superficial contact in the cowgirl on the bed in machine or matches.when the tongs installs in the machine bed work on the stage,the center of gravity of the tongs should be as far as possible low,center of gravity the more high an accepts should the dint is more big,the tongs bottom four directions should bulge,make its contact good,or the bottom establishes four a feets.when the tongs installs on the machine bed principal axis,the tongs install the to should have the enough match accuracy with principal axis cowgirl surface,and guarantee the gearing the stability dependable.

夹具体在机床上的安装都是通过夹具体上的安装基面与机床上的相应表面的接触或配合实现的。当物流设备需要的公司体在机床工作台上安装时，夹具的服装厂应尽量低，重心越高则支承面应力越大，夹具底面四边应凸出，使其接触良好，或底部设置四个支脚。当夹具体在机床主轴上安装时，夹具安装基面与主轴相应表面应有足够的配合精度，并保证安装稳定可靠。

The deformation of the slideway will reduce the precision of the installation of the machine tool,and will cause the change of the beeline and angular magnitude which can reduce the manufacturing precision of the machine tool.

机床床身导轨热变形后会破坏机床安装调试的精度，引起部件移动的直线度和角度变化而降低机床的加工精度；通过几种运用不同的方法建立导轨热变形的数学模型，能够为数控机床的编程带来方便，保证和提高工件的加工质量。

According to the request of construction features, processing spot, size precision, surface roughness and productivity that diesel engine air cylinder, sets the machine tool for single location horizontal type modular machine tool. Considered to the factor of the size precision, surface roughness, scrap removes and productivity and so on of the work piece, selects the Hard alloy not grind type surface milling cutter.

根据柴油机气缸体的结构特点、加工部位、尺寸精度、表面粗糙度及生产率等要求，确定该机床为单工位卧式组合机床；考虑工件尺寸精度，表面粗糙度，切屑的排除及生产率等因素，选用硬质合金不重磨式面铣刀；根据工件的尺寸、特点及其材料选择切削用量；然后，再经过切削用量来确定组合机床的通用部件；最后进行组合机床的总体设计。

The machine constructure is optimized and the stability is enhanced, so the service life of the machine is increased.

机床严格遵循机床设计流程，优化提升了床体的结构，增加了机床床身的稳定性，从结构上提高了机床的使用寿命。

Has become a specialist and one of the worldwide leading manufacturers of gear hobbing and worm milling machines, thread milling and thread whirling machines, honing machines for heads and inserts as well as machines to produce dental burs with more than 40 years experience in the development of machine tools and special machines.

瑞士莫尼埃查纳有限公司现已成为世界领先的齿轮切削机床、蜗杆螺纹内旋风和外旋风铣削机床、人工髋关节内外球面珩磨机床、牙科车针机床制造商之一，拥有40余年特种机床设计与制造的经验。

In order to implement GM effectively,a product design main-line and life cycle main-line based GM operation model for machine tool industry was presented oriented to the product life cycle.

为了在机床行业有效实施绿色制造，面向机床产品生命周期建立了一种基于产品设计主线和生命周期主线的机床行业绿色制造运行模式，并对其中的机床绿色设计、绿色生产、废旧机床再制造等进行了论述。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了