Work Turn Transfer Unit

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SpecificationPurpose, action(purpose)The work flowing on the conveyor is rotated 90 degrees and transferred to the next processAt this time, the chuck mechanism rotates 180 degrees and transfers without changing the direction in which the work flows relative to the transfer direction.(action)Chuck lowering→work gripping→chuck up→90 degree feed rotation・180 degree chuck rotation→chuck lowering→work opening→chuck upTarget workShape: Connector / Size: W40×D30×H26 / Weight: 0.1 gCharacteristicOperating specifications and dimensionsTransfer angle: 90 degreesRotation angle: 180 degreesLifting cylinder stroke: 10mmClamp stroke: 3mm on one sideExternal dimensions: W136 (before rotation) xD403xH398Basis for selection of major partsTiming pulley ratio is set to 2:1Reduce the inertia force, such as reducing the weight of parts in the swinging part.The gripping force of the air chuck should be selected in consideration of the friction coefficient and the weight of the workpiece.Design pointMain parts calculation processSince the moment of inertia applied to the pulse motor is important, the motor selection calculation is recorded.Travel time of 90 degrees t0: 0.5secAcceleration time t1: 0.1secMoment of inertia of swinging product: JL=4.16×10⁻² ㎏・㎡Operating angle: θ = 90°, pulse motor minimum step angle: θs = 0.072°Number of operation pulses: A=θ/θs=1250 pulsesOperation pulse speed: ｆ2 = A/ (t0-t1) = 3125HzOperation speed: NM=θs/360×p2×60=37.5r/minMoment of inertia of the selected motor rotor: J0 = 1.1×10⁻⁴Motor gear ratio: i = 1/10Acceleration torque calculation: Ta = (J0・i²+JL)/9.55×NM/t1 = 2.065N・mRequired torque calculation: TM = Ta x safety factor = 4.13N·m　 (here, the safety factor is 2)Motor selected from the motor torque characteristic table is OKConfirmation of inertia ratio: OK because JL/(J0×i²) = 3.78 ≦ 10　Structural fabrication and design pointsFix the timing pulley in the center of rotationThe chuck at the rotating tip should allow ascending and rotating.If it is an original facility, a cover is required for safety and anti-vibration measures.Examples of units of the same function (purpose/process)