Bevel-helical speed reducer B4 d B Article No overview Selection and ordering da B4SV-28-C

Flender/Flender Gear Units/Bevel-helical speed reducer B4

sverse backlashxsm1xsmnjet2Rm2cosm2 4mmnRe2(2. ...mean normal backlashxsm1xsmnjmn1 4mmncosn(2. ...mean transverse backlashxsm1xsmnjmt2cosm2 4mmn(2. Mean normal circular tooth thickness, pinionsmn1:5mmn2mmnxsm1xhm1tann (2. Wheel thickness modication coefcient, calculated using: ...outer normal backlashxsm2xsmnjen1 4mmncosnRm2cosm2 Re2cose2(2. ...outer transverse backlashxsm2xsmnjet2Rm2cosm2 4mmnRe2(2. ...mean normal backlashxsm2xsmnjmn1 4mmncosn(2. ...mean transverse backlashxsm2xsmnjmt2cosm2 4mmn(2. Mean normal circular tooth thickness, wheelsmn2:5mmn2mmnxsm2xhm1tann (2. Mean transverse circular tooth thicknesssmt1:2smn1:2=cosm1:2 (2. Mean normal diameterdmn1:2dm1:2 1sin2m1:2cos2n cos1:2(2. Mean normal chordal tooth thicknesssmnc1 :2dmn1:2sinsmn1:2=dmn1:2 (2. Mean chordal addendumhamc1 :2ham1:2:5dmn1:2cos1:2cossmn1:2 dmn1:2/C1/C1 /C2/C2(2.Table 2.1 Calculation of tooth depth Designation Formula No. Outer addendum hae1,2ham1,2be1,2tana1,2 (2. Outer dedendum hfe1,2hfm1,2be1,2tanf1,2 (2. Outer tooth depth he1,2hae1,2hfe1,2 (2. Inner addendum hai1,2ham1,2bi1,2tana1,2 (2. Inner dedendum hfi1,2hfm1,2bi1,2tanf1,2 (2. Inner tooth depth hi1,2hai1,2hfi1,2 (2.2.3 Bevel Gear Geometry Calculation 4 2.3.4 Undercut Check Depending on the chosen prole parameters, undercut may occur on bevel gears as it occurs on cylindrical gears. The following section provides formulae to checkwhether undercut will occur on the teeth and, if so, what areas along the face widthare endangered. In principle, the pinion is most at risk. Absence of undercut mayhere become the decisive criterion in the choice of an adequate prole shift (seeSect. 3., especially on bevel gears with uniform tooth depth. Since prole shifts on bevel pinions and wheels usually mean that their sum is zero, 1xhm2xhm1, the check for the absence of undercutting on the pinion (see Table 2. must always be followed by an undercut check o