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Chapter 1 I-40 Description of the calculation modules 3.30 W13 Buckling You use this function to calculate the buckling load of shafts and supports. All peripheral conditions, bearings and effective axial forces (point or line loads) are taken into account in the calculations. It outputs the safety for a number of buckling situations, however, only the first one is usually relevant. You must input the loads for this calculation.
Chapter 1 I-41 Description of the calculation modules 4 Machine elements - M module 4.1 M01a Cylindrical interference fit Cylindrical interference fits influenced by centrifugal force Loading in circumferential and axial directions Calculating the maximum torque for a non-slipping fit. If slip occurs in the fit, micro gliding will cause corrosion due to friction. The calculation includes the entirety of the DIN 7190 standard (elastics) with longitudinal, radial and oil interference fits This module also calculates the safety of the interference fit against gliding and the safety of the shaft material and the hub are to fracture and yielding. The tolerance system in accordance with DIN 7151 (e.g. with diameter input 60 H7/f6), has been implemented to make it easier to input data. 4.2 M01b Conical interference fit Conical interference fit connection: Calculation and design of a conical interference fit connection for transferring torque in an elastic operating state. Conical interference fits are normally joined axially with a screw or by pressing them together. Calculation method as specified by F. G. Kollman for connections with the same Young's modulus and with a solid inner part. The permitted area of the set angle is determined (for the upper installation). The displacement and pretension force for joints and in operation under maximum torque is also calculated. Sizings: Permitted angle of taper (for self locking) Length of interference fit for transmitting the maximum torque Maximum transmissible torque 4.3 M01x Additional function for a press fit Extension of the interference fit calculation: The calculation also takes into account the effect of the centrifugal force on the expansion of the interference fit and on the stress in the shaft and hub. You can either enter the tolerance manually, or use an automatic option to calculate the tolerance pairing based on the required safety against gliding and the
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