Cutting tool design 刀具的设计

发布日期:[09-10-22 20:44:21] 浏览人次:[]

linear or rotary tool travel. The composition and geometry of the workpiece to a great extent determines the workholder requirements. Workholder selection also depends upon forces produced by the tool on the workpiece. Tool guidance may be incorporated into the workholding function.

工件的物理结构对加工方式的选择,刀具的组成和形状,材料的去除率影响很大。工件需要的形状影响着加工方式的选择,及刀具是直线运动或旋转运动。工件的组成和形状在很大程度上决定了工件夹具的需求。工件家具的选择也取决于刀具在工件上产生的压力。刀具的导向可以与工件的夹具功能合二为一。

Successful design of tools for the material removal processes requires, above all, a complete understanding of cutting tool function and geometry. This knowledge will enable the designer to specify the correct tool for a given task. The tool, in turn, will govern the selection of toolholding and guidance methods. Tool forces govern selection of the workholding device. Although the process involves interaction of the five elements, everything begins with and is based on what happens at the point of contact between the workpiece and cutting tool.

为材料的去除工艺而成功设计的刀具,首先需求的是对工具功能和形状的彻底了解。这个理解将使设计者为指定的工作定出正确的刀具。而这个刀具,也将决定刀具的夹具和导向方法的选择。刀具的压力决定了工件夹具的选择。虽然这个工艺与5个因素有关,但所有的都开始于,也建立在工件和刀具之间的接触点上所发生的情况。

The primary method of imparting form and dimension to a workpiece is the removal of material by the use of edged cutting tools. An oversize mass is literally carved to its intended shape. The removal of material from a workpiece is termed generation of form by machining, or simply machining.

对一个工件最基本的说明其形式和尺寸的方法就是告知通过刀刃对材料的除去量。一个超大型的体积可以被准确的加工为它需要的形状。从工件上切除材料被称为机加工成型阶段,或者简称为加工。

Form and dimension may also be achieved by a number of alternative processes such as hot or cold extrusion, sand casting, die casting, and precision casting. Sheet metal can be formed or drawn by the application of pressure. In addition to machining, metal removal can be accomplished by chemical or electrical methods. A great variety of workpiece may be produced without resorting to a machining operation. Economic considerations, however, usually dictate form generation by machining either as the complete process or in conjunction with another process.

形式和尺寸也可以通过其它一些可选工艺来达到,比如热挤出或冷挤出加工,沙模铸造,拉模铸造,或精密铸造。薄的金属可以通过使用压力来成形或拉长。除了机加工以外,金属的去除还可以通过化学或者电学的方法来达到。很多种类的工件可能不用选择机加工操作就可以做出来。然而从经济上考虑,通常指定为机加工形式,或着机加工作为最后的工序,或者与其它工艺结合使用。

Cutting tools are designed with sharp edges to minimize rubbing contact between the tool and workpiece. Variations in the shapes of the cutting tool influence tool life, surface finish of the workpiece, and the amount of force required to s

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本文关键字:Cutting tool  design  刀具  设计
本文所属专题:机床刀具 英文文献翻译 
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