Ordinal of CNC Machining Cheng accuses example of process designing of program of lathe finish machining

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Example of process designing of program of finish machining of lathe of numerical control of CNC Machining program is about to be on lathe of some numerical control have precision work, program of staff precision work. 1) basis design requirement, certain technology program reachs cutter track line to press first advocate hind second treatment principle, decide its take cutter track line. Above all of cutting spare parts outside outline, direction is machine from right towards the left, specific line is: Pour wine cup first (1×45° ) the effective way φ47 of → cutting whorl.

φ62→ of cutting of → of part of 8→ cutting taper pours wine cup (1×45° ) φ80 of cutting of → of part of circular arc of cutting of → cutting φ80→ , again grooving, final turning whorl. 2) choose cutting tool and draw a cutting tool to decorate a graph to ask to need to choose 3 cutting tool according to treatment. A knife is outside round lathe tool, 2 knives are the grooving knife of 3 ㎜, 3 knives are whorl lathe tool. Cutting tool decorates a graph to see a picture 1 (B) . To pair of Dao Yi are being used when the knife, it is with 1 fiducial. Photograph of 3 knives point of a knife is in to point of a knife of a knife Z to slant measure 15 ㎜, undertake compensating by the program of 3 knives, its compensate a value to be inputted through Control Panel handiwork, in order to maintain the accord of position of point of a knife. 3) workpiece coordinate department decides by workpiece design dimension distributinging circumstance decides workpiece coordinate is origin O is taken in the end panel inside workpiece (be like graphic representation) place, coordinate was cutting tool at 0 o'clock (200, 350) 4) affirmatory cutting dosage cutting dosage should reach the element such as the machine tool to consider integratedly according to material of workpiece material, hardness, cutting tool, decide by experience commonly. This exemple dosage of cutting of each cutting tool if the circumstance expresses 1 to show a list 1 cutting dosage is expressed 5) this system can use process designing of staff precision work absolute value and increment size mix process designing, absolute value uses address of X, Z, increment size uses address of U, W, use decimally process designing. O0020N01 G50 X200.

0Z350.

0; (workpiece coordinate fastens set) N02 S630 T0101 M03; (with a knife, main shaft is turning) N03 G00 X41.

8Z292.

0M08; N04 G01 X47.

8Z289.

0F0.

15; (pour 1×45° wine cup) N05 W-59.

0; (car φ47.

The circle outside 8 ㎜) N06 X50.

0; (retreat a knife) N07 X62.

0W-60.

0; (turning taper part) N08 Z155.

0; (the circle outside car φ62mm) N09 X78.

0; (retreat a knife) N10 X80.

0W-1.

0; (pour wine cup) N11 W-19.

0; (the circle outside car φ80mm) N12 G02 U0.

0W-60.

0I63.

25K-30.

0; (turning circular arc) N13 G01 Z65.

0; (the circle outside car φ80mm) N14 X90.

0M09; N15 G00 X200.

0Z350.

0M05 T0100; (retreat a knife) N16 X51.

0Z230.

0S315 T0202 M03; (change 2 knives, start of fast approach grooving) N17 G01 X45.

0F0.

16M08; (grooving) N18 G04 X5.

0; (delay time) N19 G00 X51.

0M09; (retreat a knife) N20 X200.

0Z350.

0M05 T0200; (retreat a knife) N21 G00 X52.

0Z296.

0S200 T0303 M03; (change 3 knives, start of whorl of fast approach car) N22 G92 X47.

2Z231.

5F1.

5M08; (car whorl circulates, circulate 4 times) N23 X46.

6; N24 X46.

2; N25 X45.

8; N26 G00 X200.

0Z350.

0T0300; (retreat to start) N27 M30; (the program stops and return) CNC Milling