About how to choose the tolerances of the gear shaft, the bearing and the bearing seat, the inner diameter of the bearing is 40, and the outer diameter is 50. (used in the continuous mechanical mechanism of a plurality of presses, the gear drives the rack to move up and down)Second, the gear shaft and rack (rack is a circular bar material slotted, diameter 40, length 385) material is? Just to meet the use of performance, hardness requirements? Bearing seat material? Gear excircle diameter 38.5, length 34, 20 teeth.Third, bearing thickness of 12, then, bearing seat hole length, size generally take?Another question is, how do I determine the distance between the rack sections, the distance between each alveolus, and the size of a tooth slot?I hope you can help me
To give you some advice:1. I'm not sure I can help you2., you also need to provide body diagram, the speed of lifting, transmission power, professional engineers will be able to help you better.
I really don't understand what you're saying, but I hope you'll add more of your industry. They should understand
1. bearing housing, bearing hole, Phi 50H7 (+0.025, 0)2. gear shaft bearing, shaft diameter, Phi 40k6 (+0.018, +0.002)3. gear shaft and rack are 45#, or 40Cr, quenching and tempering treatment, hardness HRC28 ~ 32.4., bearing seat material, 45#, Q235, will do.5. "bearing thickness of 12, then the bearing seat bore length size" - Size 11 can be.6. according to your gear parameter, the modulus is 1.75. The distance between the teeth of each rack is 5.498,"The size of a slot" - isosceles trapezoid, vertex angle of 40 degrees, groove depth 3.94, big mouth width of 4.02, and the bottom width of about 1.15.
