How to program and process such parts?

The left parabolic equation is Z=-((x-1)^2)/40

1、 Part clamping

According to the analysis of the graph , First process the arc and internal thread hole from the right end to the right side of the workpiece , After machining the right end , Tighten the right end of the workpiece with the process head , Machining the arc at the left end of the workpiece 、 Long 16 The steps and grooves , This ensures coaxiality .

2、 Procedure reference ：

Right end

O0001; The program name

G97G99G40G21;

M03S800;

T0101; choice 1 Knife number

G00X80.Z2.; Tool stop safety point

G73U20W0R20; Rough turning cycle

G73P3Q4U0.5W0.F0.2; Finish turning allowance 0.5mm

N3G00X40.;

G01Z0.F0.1;

G03X56.W-54.4R35.F0.1; Counterclockwise circular interpolation

G01X56.F0.1;

W-16.F0.1;

N4G00X80.;

M03S1200; The spindle turns 1200r/min

G00G42X80.Z2.; Establish cutter compensation

G70P3Q4;

G00X100.Z100.; Back to the starting point

T0202; in 2 Knife number

G00X80.;

Z-66.4;

G01X48.F0.1;

G04U2;

G00X100.;

Z100.; Retract the knife

T0303; in 3 Knife number

G00X20.;

G71U-1.5R0.5; Rough turning cycle

G71P5Q6U0.5W0.F0.1;

N5G00X22.;

G01Z0.F0.1;

X20.W-1.F0.1;

W-32.F0.1;

N6G00X10.;

M03S1200; Spindle speed 1200r/min

G70P5Q6; finish machining

G00Z100.; Retract the knife

X100.;

T0404; in 4 Knife number

G00X10.; Stop cutting

Z-30.;

G01X24.F0.1;

G04U1;

G00X10.;

Z100.;

X100.;

T0505; in 5 Knife number

G00X22.Z6.;

G92X17.Z-28.F2.; Rough turning cycle thread turning

X17.5;

X18.;

X18.5;

X19.;

X19.5;

X20.;

G00X10.;

Z100.; Retract the knife

M05; The spindle stops

M30; Program end

Left side ：

O0002; The program name

G97G99G40G21;

M03S800; Spindle speed 800r/min

T0101; choice 1 Knife number

G00X100.Z100.; Starting point

X81.Z2.; Stop in a safe position

G71U1.5R0.5; Rough turning cycle

G71P1Q2U0.5W0.F0.2;

N1G00X48.;

G01Z-54.6F0.1;

X49.985;

G03X55.985W-3.R3.F0.1; Car arc

G01U1.W-1.F0.1;

N2G01X81.F0.3;

M03S1200; Spindle speed 1200r/min

G42G00X81.Z2.; Establish cutter compensation

G70P1Q2; Finishing car

G40X100.Z100.; Cancel the knife mending , Back to the starting point

M03S800; Spindle speed 800r/min

G00X49.Z2.; safer

#1=-54.6;

WHILE[#1LE0]DO1;

#2=SQRT[-#1/0.1];

G90X[2*#2+1]Z#1F0.2;

#1=#1+2;

END;

M98P10003;

M30; Program end

O0003; The program name

T0101; choice 1 Knife number

G00G42X49.Z2.; Safe location

X0.;

G03X0.Z0.R1.F0.1; Car arc

#1=0;

WHILE[#1GE-54.6]DO1;

#2=SQRT[-#1/0.1];

G01X[2*#2+1]Z#1F0.1;

#1=#1-0.1;

END1;

G01X60.F0.1;

M99; The subroutine ends

G00G40X100.Z100.; Cancel the knife mending , Back to the starting point