CNC简介(中英文)

1、Introduction to CNC Process CNC制程简介,2,CCD Camera,CNC Plant CNC车间,CNC Machine Inside CNC机台内部,Grinding Tool 磨棒/砂轮,CNC Workflow,Remark: CNC step can be simplified, CNC tool can be changed based on different requirement and different plant 备注： 根据不同工厂以及不同要求，CNC步骤可以简化，工具可以更改,3,The following data is just a

2、n example, different machines have different settings. 以下数据仅为举例，不同机台参数设定均有差异 X/Y/Z Axis Position Accuracy(轴定位精度)： 5um X/Y/Z Axis Machining Area(轴工作行程)：400/400/160mm Spindle Speed(主轴转速)：100050000 rpm Feed Rate(切削进给速度)：0.2M/min， 6M/min(max) Tool Magazine(刀库容量)： 8,CNC Machine,Single Axis Type,Double Ax

3、es Type,4,CCD Camera,CNC Working Moment,CNC Inside Detail CNC内部细节,CNC Worktable is made of PTFE CNC工作台由聚四氟乙烯制成 CNC Worktable uses vacuum to fix Glass CNC工作台通过真空吸盘固定玻璃 CNC Machine with CCD camera is usually for glass after silk printing which requires high precision. 丝印或镀膜后要求加工精度较高的要选择带CCD系统的机床, 如果加工

4、的玻璃没有特殊要求，只要选择普通的机床就可以.,CNC Positioning Tool CNC靠角工具,CNC Worktable Detail CNC工作台细节,5,Lapping Liquid Function,Lapping liquid function: 研磨液作用 Cooling 冷却 Lubrication 润滑 Cleaning 清洁 Rust Prevention 防锈 Tool Protection 刀具保护,Silicate Film cause volume expansion,Micro-crack by mechanical grinding (机械研磨形成的微小

5、裂纹),Lapping liquid component: 研磨液组成 Surface Active Agent 表面活性剂 Lubricant 润滑剂 Foam Killer 消泡剂 Antirust 防锈剂 Germicide 杀菌剂,Chemical Function of Water in CNC (CNC研磨中水的化学作用),硅酸盐薄膜导致体积膨胀,6,Grinding Tool Introduction,The abrasive dust and fallen grinding material can cause scratch in glass surface 磨屑与脱落的磨料

6、可能造成玻璃表面刮伤,7,8,9,10,Grinding Tool Introduction,A: 300# Outline 粗修外形 B: 600# Outline 精修外形 C: 600# Chamfer 倒边,11,Grinding Took Introduction,1 inch,1 inch,Mesh Value 目数,Mesh Value Hole Size=15000, e.g. 1000# equals 15um hole size 目数孔径=15000, 1100目约等于13um的孔径 Mesh Value has American Standard and Japanese

7、 Standard 关于目数的定义，目前有美国标准和日本标准,Apertures Quantity （孔数）,12,Chamfer Making,Grinding Tool with special outline design is used to make chamfer on glass. 倒角使用异形磨头加工。 Chamfer thickness is usually 2030% of total glass thickness. 倒角的厚度通常为玻璃总厚度的2030%,0.2,0.2,1.0,13,Grinding Material Hardness Comparison,Using

8、 hard grinding material can enhance the grinding effectiveness, but grinding quality will be affected 采用较硬的研磨材料既可以提高研磨效率，但会影响研磨质量,14,Grinding Material Attach Method,15,16,Relationship between Grinding Material Size & Surface Quality,Using rougher ( e.g. 180M) grinding tool can save time and prolong

9、life time of tool, but grinding quality will be affected 采用较粗（如180M）的砂轮既可以节省开粗时间，提高磨头的使用寿命，但会影响研磨质量 Attach method of grinding material also affects the grinding quality 磨料的粘结方法也会影响研磨质量,钻石磨料,磨粒粒度,17,h,f,F,D,Relationship between Grinding Material Size & Surface Quality,18,Rough grinding material gener

10、ates deep dent and crack (粗磨料导致过深的凹陷和裂纹),4 PB Test Result decreases. Glass edge strength decreases. (四点弯曲实验数值下降，玻璃边缘强度下降),Decrease grinding material size step by step to minimize the edge crack. (逐级降低磨料的粒度，以使边缘裂纹尽量细微),Principle for Choosing Grinding Material Size,19,Important Settings for CNC,加工深度,进

11、给速度 Feed Rate,进刀方式,刀具几何形状及颗粒度,刀具转速Spindle Speed,退刀方式,加工余量,下刀方式,20,砂轮粒度对表面粗糙度影响： 当砂轮粒度愈高时，所得到之表面粗糙度相对较佳。 相同砂轮粒度，进给率变小时，所得到之表面粗糙度相对较佳。,21,进给率对表面粗糙度影响： 当进给速率愈慢时，所得到之表面粗糙度会愈好。 当使用的砂轮粒度较粗时，要得到较好的研磨表面粗糙度，可以选择较高磨削速度与较低的进给速率。,例如， 300M，直边的走刀速度可以设置为0.2m/min；尖角处可设置为0.5m/min. 600M， 进给速度可设置到0.85m/min,22,磨削速度对表面粗

12、糙度影响： 磨削速度固定时，进给速率愈快，离隙面表面粗糙度愈差。 砂轮粒度愈高时，磨削速度对于表面粗糙度影响相对减少。,23,Edge situation after different Process,L:110.46 W:60.46,L:110.06 W:60.06,L:110.02 W:60.02,L:110 W:60,After Cutting,After CNC,After Edge Polishing 1,After Edge Polishing 2,24,How to Make Hole and Slot,25,Drill Example,26,扫光毛刷 尼龙，白皮,Edge Polishing,方法 1:,方法 3:,玻璃 0.5-2.0MM,间隔垫片 0.4-1MM,27,Grinder is in best position,Grinder is high or glass is low,Grinder is low or glass is high,Improper Chamfer Situation,28,Un-Grinded Area 未磨区域,Edge Chipping Area 崩边区域,Uneven Edge 砂边区域