數(shù)控技術(shù)概述-wenkub
2023-01-20 01:54:48 本頁面
【正文】 path control to perform straight cut or contouring operations. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC Machine Tool Application NC grinding machine (數(shù)控磨床 ) It is intended for finishing treatment of workparts. The grinding machine includes cylindrical, surface, internal, spindle,thread ,gearand toolgrinding machines. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC Machine Tool Application Machine center (加工中心 ) It is defined as multifunction NC machines with automatic tool changer and tool has the ability to perform drilling, turning, reaming, boring, milling, contouring, and threading operations on a single machine. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC Machine Tool Application Machine center (加工中心 ) Machining centers are classified as either vertical or horizontal. Vertical machining centers continue to be widely accepted and used, primarily for flat parts and where threeaxis machining is required on the surface of a single part such as the mold and the die. Horizontal machining centers are particularly used for the large,boxy, and heavy parts. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC Machine Tool Application Machine center (加工中心 ) . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC NonMachine Tool Application Punch presses for sheet metal hole punching (數(shù)控沖床 ) The twoaxis NC operation is similar to that of a drill press except that holes are produced by punching rather than by drilling. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC NonMachine Tool Application Presses for sheet metal bending (數(shù)控折彎機 ) Instead of cutting sheet metal, these systems bend sheet metal according to programmed mands. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC NonMachine Tool Application Welding machine (數(shù)控焊接機 ) Both spot welding and continuous arc welding machines are available with automatic controls based on NC. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Application of CNC NonMachine Tool Application Thermal cutting machine (數(shù)控?zé)崆懈顧C ) Such as oxyfuel cutting(火焰切割 ),laser cutting(激光切割 ), and plasma arc cutting(等離子電弧切割 ). The stock is usually flat。 （連續(xù)控制或 輪廓 控制系統(tǒng)） . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Types of NC Motion Control System Pointtopoint control system Point –to point (positioning) control in NC It is also called Positioning control system, Which moves the worktable to a programmed location without regard to the path taken to get to the location. That is to say ,the path between points is of little concern and is not particularly controlled. The program consists of a series of point locations at which operations are performed. Such as drilling or punching a hole. . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Types of NC Motion Control System pointtopoint control system Many NC point –topoint systems contain a more plex MCU. IN these servos, positioning mands are evaluated simultaneously so that vector motion in two axes is possible. The movements between points can be done along straight or 450 vectors paths determined by the machine ways or slides. Such systems are some times called straightcut control system.（點位 /直線） . Chapter 1 INTRODUCTION TO NUMERICAL CONTROL Types of NC Motion Control System Contouring Control System It is also called continuous path control system, which manages the simultaneous motion (resultant motion)of the cutting tool in two, three, four, of five axes by interpolating(插補 )the proper path between prescribed points. It enables the cut
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