Workpiece maximal permissible weight in relation to clamping diameter Dc and gravity center length Lgc, for lathe models 1H65, RT117, RT817
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Workpiece maximal permissible weight, kg (pounds) |
The values in the table have been calculated for machining a cylindrical piece clamped in direct jaws (Fig. 1) of a standard Ryazan chuck delivered with the lathe, with nominal rated clamping force 694 daN. Machining a flange-type piece (Fig. 2) reduces the maximal permissible weight by half. Machining a cylindrical piece clamped in reverse jaws (Fig. 3) reduces the maximal permissible weight by 5 times the table value. |
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2.0 |
192 (423.29) |
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1.8 |
210 (462,97) |
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1.6 |
231 (509,27) |
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1.4 |
267 (588,63) |
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1.2 |
302 (665,80) |
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1.0 |
347 (765,00) |
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0.8 |
433 (954,60) |
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0.6 |
578 (1 274,27) |
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0.4 |
771 (1 699,76) |
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0.25 |
867 (1 911,41) |
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0.2 |
867 (1 911,41) |
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0.125 |
867 (1 911,41) |
Workpiece maximal permissible weight in relation to cylindrical workpiece diameter D (mm) and gravity center length Lgc (mm), for lathe models 1M63H and 16K40
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Nominal rated clamping force, kg |
Gravity center length Lgc, mm |
Machined piece diameter, mm |
Maximal workpiece permissible weight, kg (pounds) |
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652 |
219 |
400 |
430 (947,99) |
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310 |
210 |
169 (372,58) |
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|
1459 |
20 |
7 (15,43) |
Maximal permissible cutting force in relation to workpiece diameter D (mm), overall workpiece length L (mm) and clamping diameter Dc, for machining the piece on air on lathe models 1M63H and 16K40
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Workpiece diameter D, mm |
Overall workpiece length L, mm |
Maximal permissible cutting force Fc, kg (pounds) |
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0.6 |
0.2 |
4000 |
800 |
724 (1 596,14) |
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0.4 |
1600 |
543 (1 197,11) |
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0.6 |
2400 |
466 (1 027,35) |
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0.8 |
3200 |
384 (846,57) |
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1 |
4000 |
326 (718,71) |
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0.6 |
0.2 |
2100 |
420 |
724 (1 596,14) |
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0.4 |
840 |
543 (1 197,11) |
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0.6 |
1260 |
466 (1 027,35) |
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0.8 |
1680 |
384 (846,57) |
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1 |
2100 |
326 (718,71) |
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0.6 |
0.2 |
200 |
40 |
724 (1 596,14) |
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0.4 |
80 |
543 (1 197,11) |
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0.6 |
120 |
466 (1 027,35) |
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0.8 |
160 |
384 (846,57) |
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1 |
200 |
326 (718,71) |
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1 |
0.2 |
4000 |
800 |
815 (1 796,77) |
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0.4 |
1600 |
652 (1 437,41) |
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0.6 |
2400 |
582 (1 283,09) |
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0.8 |
3200 |
408 (899,48) |
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1 |
4000 |
326 (718,71) |
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1 |
0.2 |
2100 |
420 |
815 (1 796,77) |
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0.4 |
840 |
652 (1 437,41) |
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0.6 |
1260 |
582 (1 283,09) |
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0.8 |
1680 |
408 (899,48) |
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1 |
2100 |
326 (718,71) |
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1 |
0.2 |
200 |
40 |
815 (1 796,77) |
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0.4 |
80 |
652 (1 437,41) |
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0.6 |
120 |
582 (1 283,09) |
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0.8 |
160 |
408 (899,48) |
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1 |
200 |
326 (718,71) |
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1.4 |
0.2 |
4000 |
800 |
815 (1 796,77) |
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0.4 |
1600 |
724 (1 596,14) |
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0.6 |
2400 |
502 (1 106,72) |
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0.8 |
3200 |
408 (899,48) |
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|
1 |
4000 |
326 (718,71) |
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1.4 |
0.2 |
2100 |
420 |
815 (1 796,77) |
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0.4 |
840 |
724 (1 596,14) |
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0.6 |
1260 |
502 (1 106,72) |
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0.8 |
1680 |
408 (899,48) |
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1 |
2100 |
326 (718,71) |
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1.4 |
0.2 |
200 |
40 |
815 (1 796,77) |
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0.4 |
80 |
724 (1 596,14) |
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0.6 |
120 |
502 (1 106,72) |
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0.8 |
160 |
408 (899,48) |
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1 |
200 |
326 (718,71) |
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0.6 |
For machining pieces backed up with tailstock center |
528 (1 164,04) |
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1 |
880 (1 940,07) |
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1.4 |
1232 (2 716,09) |
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Calculations compiled from different sources by G. S. Djavakhov, Doctor in Mechanics, ERESPO-IMPEX LTD.