catalogo tecnico technical catalogue - Romani Components
catalogo tecnico technical catalogue - Romani Components
catalogo tecnico technical catalogue - Romani Components
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• Para la carga máxima:<br />
• For the maximun load:<br />
T E =T Lmax + T pr = 47,4 Nm + 0,6 Nm = 48 Nm (57)<br />
d 2 = D pw - D w = 42,1 - 6,35 = 35,75 mm<br />
I p = 160363 mm 4 (54)<br />
• La deformación angular:<br />
• Angular deformation:<br />
48 Nm ⋅10 2 ⋅1900 mm<br />
θ =<br />
8,1 10 4 N/mm 2 ⋅160363 mm 4 = 7 · 10−4 rad<br />
·<br />
(53)<br />
• Retraso en el movimiento axial:<br />
• Axial lagging:<br />
∆l θ =P h·θ/2π=10 ·7· 10 -4 /2π = 0,001 mm = 1 µm<br />
(55)<br />
• Para la carga media:<br />
• For the mean load:<br />
T E = T Lm + T pr = 27 Nm + 0,6 Nm = 27,6 Nm<br />
(57)<br />
θ =<br />
27,6Nm ⋅10 2 ⋅1900 mm<br />
8,1 10 4 N/mm 2 ⋅160363 mm 4 = 4,04·10 −4 rad<br />
(53)<br />
∆l θ =P h · θ/2π=10 ·4,04 ·10 -4 /2π = 0,6425 µm<br />
(55)<br />
Si se calcula la deformación debido a la<br />
carga axial, se puede observar que es mucho<br />
mayor.<br />
A much higher value is obtained for the<br />
calculated deformation due to axial load.<br />
∆l s =F m / R s = 13510/491 = 27,5 µm<br />
• La rigidez del husillo a bolas teniendo en cuenta<br />
la deformación debida a la torsión.<br />
• Rigidity of ball screw if provision is made for<br />
torsion deformation:<br />
∆l s = 27,5 + 0,6425 = 28,1425 µm<br />
R s = 480,05 N/µm<br />
Rtot = 271,9 N/µm<br />
El error cometido al no tener en cuenta<br />
la deformación debida a la torsión es sólo del<br />
1%.<br />
If no provision were made for torsiondeformation,<br />
the resultant error would be 1%<br />
only.<br />
65