What is the width of the bevel gear and the length of the wheel?
(3) axial circumferential positioning;Bevel gear circumferential positioning by a flat key connection by "mechanical design" (Eighth Edition)Check key cross section keyway, use keyway milling cutter to process 50mmIf the gear matches the shaft properly, the gear wheel hub shall be matched with the shaft; the roller and the shaft shall be positioned at the circumferential direction, and the dimension tolerance of the shaft shall be determined at K6(4) determine the shaft fillet, chamfer size, take the shaft end chamfer.
4 、 shaft structure design(1) draw up the assembly of shaft parts(2) determine the diameter of each section of the shaft according to the axial positioning requirement1) meet the axial location of the half coupling 1-2 shaft right shoulder was so 2-3 segment.2) the preliminary selection of roller bearing bearing with radial force and axial force the choice of single row tapered roller bearings according to work requirements and according to the "mechanical design (Mechanical Design) course design" table 15-7 initial selection of 0 basic level clearance group standard precision single row tapered rolling bearing 30306 its sizeBearings are used axial shoulder for axial positioning by the "mechanical design (mechanical design basis) curriculum design" table 15-7, check type 30306 bearing positioning shaft shoulder height3) take the gear shaft 6-7 diameter, so that the sleeve by pressing bearingsThe 5-6 paragraph should be slightly shorter than the bearing width4) bearing end cover total width 20mm, according to bearing end cover assembly and easy to add lubricating oil bearing
3. Preliminary determination of shaft diameterThe first preliminary estimate the diameter of the shaft axis selection of 45 steel materials (conditioning) according to the "mechanical design (Eighth Edition)" table 15-3 input shaft diameter of installing the coupling for the selected shaft diameter and the diameter of the coupling aperture is required to adapt with the selection of coupling modelThe coupling calculation of torque check "mechanical design (Eighth Edition)" table 14-1 due to the torque change so take itCheck the "mechanical design (mechanical design basis) curriculum design" table 17-4 selected HL1 type elastic column pin coupling, its nominal torque of 160000 and a half of the coupling aperture, so take half of the coupling, semi coupling and shaft with the hub hole 38mm
Input shaft design1, seek input shaft power, speed, torque2. Apply the gear forceCircular radius of bevel gear at high speedCircumferential force, radial force and axial force
