LM Guide THK - Industrial Technologies

Индастриал Технолоджис www.industrial‐technologies.com.ua +38 044 498 21 94Point of SelectionCalculating the Applied Load• Applied Load EquationThe load applied to the LM Guide varies with the external force, such as the position of the gravitycenter of an object, thrust position, inertia generated from acceleration/deceleration during start orstop, and cutting force.In selecting an LM Guide, it is necessary to obtain the value of the applied load while taking intoaccount these conditions.Calculate the load applied to the LM Guide in each of the examples 1 to 10 shown below.m : Mass (kg)l n : Distance (mm)Fn : External force (N)Pn : Applied load (radial/reverse radial direction) (N)PnT : Applied load (lateral directions) (N)g : Gravitational acceleration (m/s 2 )(g =9.8m/s 2 )V : Speed (m/s)tn : Time constant (s)α n : Acceleration (m/s 2 )α[Example]ConditionApplied Load Equation1Horizontal mount(with the block traveling)Uniform motion or dwelll 3l 2P4mgP1P3Horizontal mount, overhung(with the block traveling)Uniform motion or dwellP3P2l 0l 1l 1P1 =P2 =P3 =P4 =P1 =mg4mg4mg4mg4mg4+––++mg•l 22•l 0mg•l 22•l 0mg•l 22•l 0mg•l 22•l 0mg•l 22•l 0––+++mg•l 32•l 1mg•l 32•l 1mg•l 32•l 1mg•l 32•l 1mg•l 32•l 1LM GuideIndustrial Technologies2P4l 3P1P2l 0P2 =P3 =mg4mg4mg•l 22•l 0mg•l 22•l 0mg•l 32•l 1mg•l 32•l 1mg l 2mg mg•l 2 mg•l 3P4 = + –4 2•l 0 2•l 1––+–Note) Load is positive in the direction of the arrow.A1-65