LM Guide THK - Industrial Technologies

Индастриал Технолоджис www.industrial‐technologies.com.ua +38 044 498 21 94Example of Calculating the Average Load (1) - with Horizontal Mountand Acceleration/Deceleration Considered[Conditions]No.4No.3Vm/s[Load Applied to the LM Block]During uniform motionmgP1 = +4mgP2 = +4mgP3 = +4mgP4 = +4[Average load]Pm1 =Pm2 =Pm3 =Pm4 =3333t1 t2 t1S11l S1l S1l S1l S3(Pa13(Pa23(Pa33(Pa4S2l SS1Smmmm33•s1 + P1 •s2 + Pd1 •s3)33•s1 + P2 •s2 + Pd2 •s3)33•s1 + P3 •s2 + Pd3 •s3)33•s1 + P4 •s2 + Pd4 •s3)vα1 =(m/s 2 )t1No.1During accelerationPa1 = P1 +m•α1•l 22•l 0Pa2 = P2 –m•α1•l 22•l 0Pa3 = P3 –m•α1•l 22•l 0Pa4 = P4 +m•α1•l 22•l 0mgmgl 0No.2Ball screwNote) Pan and Pdn represent loads applied to each LM block.The suffix "n" indicates the block number in the diagramabove.l 1l 2During decelerationPd1 = P1 –m•α1•l 22•l 0Pd2 = P2 +m•α1•l 22•l 0Pd3 = P3 +m•α1•l 22•l 0Pd4 = P4 –m•α1•l 22•l 0Industrial TechnologiesA1-74