1、Chapter 4 CNC Machines Lesson 2 Types of CNC Machines,Lesson 2 Types of CNC Machines,New Words and Phrases face milling 铣端面 铣削 slot milling 铣槽 reaming n 铰孔 扩孔 boring n 钻孔 镗孔 counterboring n （用平底扩孔钻）扩孔 镗孔 facing n 端面车削 刮削 grooving n 切槽 开槽 knurling n 滚花 offshoot n 分支 grinding n 研磨 磨削 fashion 样子 方式 流行
2、式样,Lesson 2 Types of CNC Machines,infeasible a 不可实行的 constraint n 约束 强制 局促 fabrication n 制造 建造 metal fabrication 金属预制件 steel sheet 钢板 flame n 火焰 plasma n 等离子体 punching n 冲孔 back gage 反向定位装置 electrode n 电极 cavity n 空腔 空穴 wire EDM 电火花线切割加工,Lesson 2 Types of CNC Machines,lettering n 写（雕刻）上文字（字母） engrav
3、ing n 雕刻 蚀刻 waterjet n 喷水 射流 coil winder 卷线机 绕线机 punch-and-die 冲压 contour grinding 轮廓磨削 outside diameter 外径 internal diameter 内径 turret punch presses 转塔式六角孔冲床 EDM (electrical discharge machining) 电火花加工,Lesson 2 Types of CNC Machines,1 、Machining processes that have traditionally been done on convent
4、ional machine tools that are possible (and in some cases improved) with CNC machining centers include all kinds of milling (face milling, contour milling, slot milling, etc.), drilling, tapping, reaming, boring, and counterboring. In similar fashion, all kinds of turning operations like facing, bori
5、ng, turning, grooving, knurling, and threading are done on CNC turning centers. 与数控加工中心结合的普通机床（和改进过的普通机床），按照传统加工的加工过程包括：各种铣削（铣端面，铣轮廓，铣槽等等），钻削，攻丝，铰孔，镗孔和扩孔。以类似的方式，所有的车削操作都可以在数控车削中心完成，比如：面车削，钻孔，车削，切槽，滚花，和车螺纹。,Lesson 2 Types of CNC Machines,CNC has even opened up a new technology when it comes to grindi
6、ng. Contour grinding (grinding a contour in a similar fashion to turning), which was previously infeasible due to technology constraints is now possible (almost commonplace) with CNC grinders. 数控在磨削加工中开创了一个新的技术。轮廓磨削（用与削相类似的方式磨削轮廓），以前受技术限制的不可加工的轮廓磨削现在可以（几乎是司空见惯）数控磨床进行加工。,Lesson 2 Types of CNC Machine
7、s,In manufacturing terms, fabrication commonly refers to operations that are performed on relatively thin plates. Think of a metal filing cabinet. All of the primary components are made of steel sheets. These sheets are sheared to size, holes are punched in appropriate places, and the sheets are ben
8、t (formed) to their final shapes. 在制造业术语当中，fabrication通常是指在较薄的板材上进行的操作，例如金属卡片盒，所有的主要元件都是有钢板制造的。那些钢板按照尺寸剪切，在适当的位置冲孔，最后压弯成型。,Lesson 2 Types of CNC Machines,Again, operations commonly described as fabrication operations include shearing, flame or plasma cutting, punching, laser cutting, forming, and we
9、lding. Truly, CNC is heavily involved in almost every facet of fabrication. 通常被称为fabrication（制造）的操作包括了：剪切，火焰切割和等离子切割，冲孔，激光切割，成型和焊接。事实上，数控在很大程度上涉及到制造业的每一个方面。,Lesson 2 Types of CNC Machines,CNC back gages are commonly used with shearing machines to control the length of the plate being sheared. CNC la
10、sers and CNC plasma cutters are used to bring plates to their final shapes. CNC turret punch presses can hold a variety of punch-and-die combinations and punch holes in all shapes and sizes through plates. CNC press brakes are used to bend the plates into their final shapes. 数控反向定位装置通常被用在剪切机床上来控制被剪切
11、材料的长度。数控激光和等离子切割机一般是对材料切割成型。转塔式六角孔冲床具备各种类型的冲压成型功能并且进行各类形状和型号的冲孔。数控压弯机可以把材料压弯成型。,Lesson 2 Types of CNC Machines,Vertical EDM requires the use of an electrode (commonly machined on a CNC machining center) that is of the shape of the cavity to be machined into the workpiece. 电火花成型加工（通常在数控加工中心进行）需要将空腔状的
12、电极加工成为工件。 Wire EDM is commonly used to make punch and die combinations for dies sets used in the fabrication industry. EDM is one of the lesser known CNC operations because it is so closely related to making tooling used with other manufacturing processes. 电火花线切割加工通常是加工制造业当中使用的冲压成型的成套模具，电火花加工是一个鲜为人知
13、的数控操作，因为他和用在其它制造过程中的制造工艺非常相似。,Lesson 2 Types of CNC Machines,As in the metal removal industry, CNC machines are heavily used in woodworking shops. Operations include routing (similar to milling) and drilling. Many woodworking machining centers are available that can hold several tools and perform se
14、veral operations on the workpiece being machined. 跟金属切削工业中的情况类似，数控机床广泛使用在木料加工行业中，这些操作包括镂铣（类似与铣削加工）和钻削加工。许多木器加工中心都可在工件上使用不同刀具进行不同操作。,Lesson 2 Types of CNC Machines,Many forms of lettering and engraving systems use CNC technology. Waterjet machining uses a high pressure waterjet stream to cut through plates of material. CNC is even used in the manufacturing of many electrical components, for example, there are CNC coil winders, and CNC terminal location and soldering machines. 许多文字刻印和雕刻系统都使用数控技术。喷水射流器就是用高压水流来切割板材。数控技术甚至应用在许多电路元件中，例如：数控卷线机，数控终端检测和焊接机床。,
