Material: A356 casting aluminum alloy;
Process: turning, drilling, reaming, tapping
Customer: China Huaneng Group Co., Ltd.
Lead Time: 8 days

Product parts following figure:


Manufacturing process: Coarse and fine turning with No.1 external turning tool, Cut off the use of No. 4 cutting knife; The tool change point is set at X50, Z100. Please prepare the machining program according to the GSK-980T system requirements.

Programming settings
O 1002 ；		Description:
N10	G50 X50 Z100 ；	Positioning the workpiece coordinate system with tool change points
N20	M3  S560 ；	Spindle start
N30	T0101 ；	Change No. 1 knife
N40	G0 X25 Z2 ；	Rapidly move to the starting point of processing
N50	G71 U0.8 R0.5 ；	Perform a cylindrical roughing cycle
N60	G71 P70 Q140 U0.5 W0.2 F100 ；	Residual capacity X0.5 Z0.2, feed rate  100 mm/min
N70	G0 X4.307 ；	Contouring start line
N80	G1 Z0 F30 ；	Finishing feed rate  30
N90	G3 X8.268 Z-1.722 R2 ；
N100	G1 X12 Z-15 ；
N110	W-5 ；
N120	X14 ；
N130	G2 X23.5 Z-30 R15 ；
N140	Z-45 ；	Contour processing end line
N150	G70 P70 Q140 ；	Finishing cycle execution
N160	G0 X50 Z100 ；	Return tool point
N170	T0404 ；	Change No. 4 cutting knife
N180	G0 X26 Z-36 ；	Locating slot starting point
N190	G1 X18 F10 ；	Grooving
N200	G4 X4 ；	Groove bottom pause for 4 seconds
N210	G0 X26 ；
N220	Z-40.1 ；	Positioning cutting start point, leaving 0.1mm margin
N230	G1 X12 F15 ；
N240	G0 X20 ；
N250	Z-39 ；	Retract to chamfer starting point
N260	G1 X16 Z-40 F10 ；	Turning end chamfer
N270	X0 F10 ；	Cut off, feed rate  10mm/min
N280	G0 X50 Z100 ；
N290	M5 ；	Replace tool point, stop spindle
N300	T0100 ；	Change back to the benchmark knife
N310	M30 ；	End procedure

Turning Notes:
1) To ensure the rigidity of turning when casting aluminum alloy, Generally, the larger diameter part should be turning first, and the smaller diameter part should be turning later.
 2) When grooving the shaft workpiece, It should be done before the finisher to prevent the workpiece from being deformed.
3) When fine turning a threaded shaft, In general, the non-threaded part should be finished after threading.
4) before drilling, the end face of the workpiece should be turned flat. Drill the center hole first if necessary.
5) When drilling deep holes, usually the first drill guide bore..
6) When turning (Φ10-Φ20) mm holes, the diameter of the tool shank should be 0.6-0.7 times the diameter of the machined hole; When machining a hole with a diameter larger than Φ20mm, the cutter bar with a clamping head should generally be used.
7) When turning a multi-start thread or multi-start worm, make a trial cut after adjusting the exchange gear.
8) When using the automatic lathe, adjust the relative position of the tool and the workpiece according to the adjustment card of the machine tool. After the adjustment, it is necessary to carry out the trial turning. After the first piece is qualified, it can be processed; During the machining process, the wear of the tool and the workpiece size and surface roughness are always taken care of.
9) in the vertical lathe, turning time, When the knife holder is adjusted, do not move the beam.
10) When the relevant surface of the workpiece has positional tolerances, the turning is done in a single clamping as much as possible.
11) When turning a spur gear tooth blank, the hole and reference end face must be machined in one clamping. If necessary, the marking line should be drawn near the end of the gear indexing circle.