How to calculate the axial force and radial force

1.

1. The calculation of the circumferential force of the belt pulley

first use the conversion ratio of the belt pulley speed and the belt pulley diameter, speed ratio = output speed: input speed = pitch circle diameter of the load belt pulley: pitch circle diameter of the motor belt pulley. The circular force and the reference force are the same, diameter - 2H = pitch circle diameter, h is the groove depth on the reference line, different types of V-belt h are different, yzab CDE, the circular force on the reference line are h = 1.62 2.753.54.88.19.6 respectively

2. Calculation of belt pulley radial force:

the radial force is the theoretical force of belt pulley pitch line position, which is generally expressed by PD, and the outer circle is generally expressed by OD. The conversion formula of pitch circle and outer circle is different for different groove types. Generally, it is easy to measure the outer circle of pulley, and calculate pitch circle according to the formula. SPZ:OD=PD+4; SPA:OD=PD+5.5; SPB:OD=PD+7; SPC:OD=PD+9.6

The axial force of the pulley is set as D1, N1 for the diameter and speed of the motor pulley (driving pulley) and D2, N2 for the diameter and speed of the driven pulley; That is, D2 = D1 * (N1 / N2). The minimum outer diameter of pulley a or spa is 80mm, SPZ belt, and the small pulley is not less than 63mm

extended data:

the recommended degree of pulley groove angle for different types of pulleys in different diameter ranges

1. The recommended degree of pulley groove angle for O-type pulleys is 34 degrees when the pulley diameter ranges from 50 mm to 71 mm; 36 degrees in the range of 71mm to 90mm, & gt; It is 38 degrees at 90mm

2. The diameter of A-type pulley is 34 degrees when the pulley diameter ranges from 71mm to 100mm, and 36 degrees when the pulley diameter ranges from 100mm to 125mm& gt; 38 degrees at 125 mm; When the diameter of B-type pulley ranges from 125mm to 160mm, it is 34 degrees; 36 degrees at 160 MM-200 mm, & gt; When 200 mm, it is 38 degrees

3. C-type pulley is 34 degrees when the pulley diameter ranges from 200 mm to 250 mm and 36 degrees when the pulley diameter ranges from 250 mm to 315 mm; 38 degrees at 315 mm

When the diameter of D-type pulley is 355mm-450mm, it is 36 degrees; At 450 mm, it is 38 degrees; E type is 36 degrees from 500mm to 630mm; It is 38 degrees when 630mm

2. It has been installed many times, but it has never been calculated. The torque transmitted by the motor through the tail shaft should be determined according to the actual size of the motor encoder. This is not determined by the motor, but by the size of the encoder.

3. If only the axial force inside the bearing is considered, there are: FA1 & gt; Fa2

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4. Single row angular contact ball bearings can only bear axial load in one direction, which will cause additional axial force when bearing radial load. And it can only limit the axial displacement of shaft or shell in one direction. The contact angle of angular contact ball bearing is 40 degrees, so it can bear large axial load
see: Calculation of axial force of angular contact radial bearing
link: https://wenku..com/view/88fa9332ee06eff9aef80747.html

5.

The radial direction is the force in the direction of the diameter of the bearing, and the axial direction is the force in the direction of the shaft of the bearing

The results show that the end bearing can bear larger axial force. The bearing types in accordance with the bearing capacity of axial load from small to large are: cylindrical roller bearing & lt; Ball bearing & lt; Tapered roller bearing & lt; Face bearing

The axial load of the bearing refers to the load generated in the axial direction of the bearing. Generally speaking, it is the force that will push the bearing inner ring out of the outer ring

Axial load is widely used in all kinds of structural vibration. It not only has important research value in theory, but also has a wide range of engineering background

For example, in the flight process of rocket missile, there is a large axial compression load, which has different degrees of influence on the lateral vibration characteristics of the missile

extended data:

the three basic parameters often used in the design of rolling bearings are:

1, the basic rated dynamic load Cr (radial) or Ca (axial) which meets the requirements of certain fatigue life

The basic rated static strength c0r (radial) or c0a (axial) meeting certain static strength requirements and the limit speed N0 controlling bearing wear are

2

in order to limit the excessive contact stress and permanent deformation of rolling bearing under static load, static load calculation is needed

The basic formula is: C0 ≥ C0 '= s0p0, where C0 - Basic rated static load, N; C0 '- calculated rated static load, N; P0 - equivalent static load, N; S0 - safety factor

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