一.为什么方槽孔加内角孔
如下图,客户来的方槽或Slot槽有内角尺寸要求,通常直接钻一个Slot槽孔内角是不能满足客户要求的,这时我们做CAM的需采用小钻刀进行处理.加内角孔或内角槽的方式进行处理了.
二.为什么不建议直接在4个角加内角孔
Slot槽4个角采用加内角孔的方式处理,这样会导致如下图效果,凸起.
三.方槽加内角槽孔方式(里面加4条槽)
1.常规槽宽则计算方式:
内角槽孔宽度：(W-0.1mm)/2
如：2.0X5.0mm槽宽,内角要求最大r0.5mm 那么内角槽宽为(2-0.1)/2 =0.95mm
2.特殊情况内角槽宽(不能满足内角尺寸要求):
如：2.0X3.0mm，内角要求最大r0.4mm，如按上面常规计算内角槽宽(1-0.1)/2=0.95mm
选用0.95mm钻刀,无法满足r0.4mm内角尺寸要求,这时需选用0.8mm钻刀
3.特殊情况槽宽(无槽刀):
如：1.0X3.0mm，内角要求最大r0.3mm，如按上面常规计算内角槽宽(1-0.1)/2=0.45mm
实际没有0.45mm槽刀，那这种情况，需选0.6mm槽刀,存在短槽孔时,钻刀需减速慢钻
此计算未考虑补偿,如真实计算需将钻孔补偿考虑进来.
四.C#简易代码实现:
1.方槽加内角槽孔代码
#region 方槽 加内角孔 gLayer glayer = g.getFEATURES($"{ "drl"}", g.STEP, g.JOB, "mm", true); foreach (var item in glayer.Llist) { List glList = calc2.l_InnerLine(item); addCOM.line(glList); } #endregion 2.计算函数
////// 将线段转为内切边的4条线段 /// /// /// 4个SLOT槽宽 当为0时，自动计算SLOT槽宽 /// 单边预大值 ///public List l_InnerLine(gL l, double SlotWidth = 0, double UpVal = 0) { List lineList = new List (); double width = l.width * 0.001; if (SlotWidth < 0.001) { SlotWidth = ((width + UpVal * 2) - 0.1)*0.5; SlotWidth = ((int)(Math.Floor((SlotWidth * 1000) / 50)) * 50) * 0.001; ; } double val = (width - SlotWidth)* 0.5 + UpVal ; double ang_direction = p_ang(l); double length = width + UpVal * 2 - SlotWidth; gL gL1 = p_val_angL(l.pe, val, ang_direction, length); gL1.width = SlotWidth * 1000; gL gL2 = p_val_angL(l.ps, val, p_ang_invert(ang_direction), length); gL2.width = SlotWidth * 1000; lineList.Add(gL1); lineList.Add(gL2); lineList.Add(new gL(gL1.ps, gL2.pe, gL1.width)); lineList.Add(new gL(gL1.pe, gL2.ps, gL1.width)); return lineList; } /// /// 求方位角 /// /// ///public double p_ang(gL l)//求方位角 { return p_ang(l.ps, l.pe); } /// /// //求增量T 线L坐标 /// /// /// /// /// ///public gL p_val_angL(gPoint ps, double val, double ang_direction, double length = 2) { gPoint pe = p_val_ang(ps, val, ang_direction); gL tempL; tempL.ps = p_val_ang(pe, length * 0.5, ang_direction + 90); tempL.pe = p_val_ang(pe, length * 0.5, ang_direction - 90); tempL.negative = false; tempL.attribut = ""; tempL.symbols = ""; tempL.width = 121; return tempL; } /// /// 求反方位角 /// /// ///public double p_ang_invert(double ang_direction)//求反方位角 { if (ang_direction >= 180) return ang_direction - 180; else return ang_direction + 180; } /// /// 求增量坐标 /// /// 起点 /// 增量值 /// 角度 ///public gPoint p_val_ang(gPoint ps, double val, double ang_direction) { gPoint pe; pe.x = ps.x + val * Math.Cos(ang_direction * Math.PI / 180); pe.y = ps.y + val * Math.Sin(ang_direction * Math.PI / 180); return pe; }
3.Point,PAD;Line数据结构
////// Line 数据类型 /// public struct gL { public gL(double ps_x, double ps_y, double pe_x, double pe_y, double width_) { this.ps = new gPoint(ps_x, ps_y); this.pe = new gPoint(pe_x, pe_y); this.negative = false; this.symbols = "r"; this.attribut = string.Empty; this.width = width_; } public gL(gPoint ps_, gPoint pe_, double width_) { this.ps = ps_; this.pe = pe_; this.negative = false; this.symbols = "r"; this.attribut = string.Empty; this.width = width_; } public gL(gPoint ps_, gPoint pe_, string symbols_, double width_) { this.ps = ps_; this.pe = pe_; this.negative = false; this.symbols = symbols_; this.attribut = string.Empty; this.width = width_; } public gPoint ps; public gPoint pe; public bool negative;//polarity-- positive negative public string symbols; public string attribut; public double width; public static gL operator +(gL l1, gPoint move_p) { l1.ps += move_p; l1.pe += move_p; return l1; } public static gL operator +(gL l1, gP move_p) { l1.ps += move_p.p; l1.pe += move_p.p; return l1; } public static gL operator -(gL l1, gPoint move_p) { l1.ps -= move_p; l1.pe -= move_p; return l1; } public static gL operator -(gL l1, gP move_p) { l1.ps -= move_p.p; l1.pe -= move_p.p; return l1; } } ////// PAD 数据类型 /// public struct gP { public gP(double x_val, double y_val, double width_) { this.p = new gPoint(x_val, y_val); this.negative = false; this.angle = 0; this.mirror = false; this.symbols = "r"; this.attribut = string.Empty; this.width = width_; } public gPoint p; public bool negative;//polarity-- positive negative public double angle; public bool mirror; public string symbols; public string attribut; public double width; public static gP operator +(gP p1, gP p2) { p1.p += p2.p; return p1; } public static gP operator -(gP p1, gP p2) { p1.p -= p2.p; return p1; } } ////// 点 数据类型 (XY) /// public struct gPoint { public gPoint(gPoint p_) { this.x = p_.x; this.y = p_.y; } public gPoint(double x_val, double y_val) { this.x = x_val; this.y = y_val; } public double x; public double y; public static gPoint operator +(gPoint p1, gPoint p2) { p1.x += p2.x; p1.y += p2.y; return p1; } public static gPoint operator -(gPoint p1, gPoint p2) { p1.x -= p2.x; p1.y -= p2.y; return p1; } }
五.实现效果
