Can radial force only be calculated with driving wheel

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. Bending radius generally depends on the material, space, design capacity requirements and other factors, so it is considered in many aspects.

3.

The radius of pipe elbow is calculated as follows:

radius = perimeter ÷ two ÷ π 3.14)

based on: PI

PI is the ratio of circumference to diameter of a circle, usually in Greek letters π Read as P à i) Means, π Is a constant (approximately equal to 3.141592654), representing the ratio of circumference to diameter. It is an irrational number, that is, infinite non cyclic decimal. In daily life, 3.14 is usually used to represent PI for approximate calculation

extended data

formula related to circle:

1, circle area: s= π r²， S= π( d/2)² D is the diameter and R is the radius)

The area of semicircle: s semicircle= π r^2)/2 R is the radius)

3. Circle area: s big circle - s small circle= π( R ^ 2-r ^ 2) (R is the radius of large circle, R is the radius of small circle)

The circumference of the circle: C = 2 π R or C= π d D is the diameter and R is the radius)

5. Circumference of semicircle: D+ π d) / 2 or D+ π r D is the diameter and R is the radius)

6. Divide the area of the circle where the sector is located by 360 and multiply by the angle n of the center angle of the sector circle, as follows:

s = n / 360 ×π r²

S= π r² × L/2 π R = LR / 2 (L is arc length, R is sector radius)

4. You can refer to this, the principle is similar
in the screw drive of the left and right hand rule
the direction of movement of the nut or screw is related to the direction of rotation of the thread and the direction of rotation of the component
select which hand according to the thread direction
left hand for left-hand thread; Right hand thread with right hand
four fingers indicate the direction of rotation
the thumb indicates the moving direction of the rotating member
this method can also be used in reverse, by understanding the relative motion relationship between the nut and the screw, the thread direction can be deced
if it is a helical gear, it is necessary to judge the left and right rotation through the driving wheel, so as to determine whether it is a left hand or a right hand
four fingers indicate the steering direction of the driving wheel, and thumb indicates the axial force direction of the driving wheel
the reverse direction of thumb is the axial force direction of driven wheel< If it is a worm,
the worm is an active part, According to the worm,
four fingers indicate the direction of rotation of worm,
thumb indicates the direction of axial force of worm,
the opposite direction of thumb indicates the direction of circumferential force of worm,
the relationship between circumferential force of worm and axial force of worm is equal in magnitude and opposite in direction,
the relationship between circumferential force of worm and axial force of worm is equal in magnitude The relationship of opposite direction
the specific analysis of worm force
worm force
radial force needless to say
the direction of circumferential force on worm is opposite to its turning direction
the direction of axial force on worm is determined according to the left and right method
the force on turbine
radial force needless to say
the relationship between the circumferential force on worm and the axial force on worm is the size The relationship between equal direction and opposite direction
the axial force of worm gear and the circumferential force of worm are equal in magnitude and opposite in direction

5. The so-called shear force is: two parallel forces acting on the same object are very close (but not zero), equal in size and opposite in direction. For example, when scissors cut an object, the force on the object is shear force
an important role of shear wall in building is earthquake resistance
suppose that you have a wooden stick in your hand and you break it with force. If you break it, then the point at the breaking point is the stress point. The stress point is subject to greater shear force, and the direction of shear force is generally perpendicular to the wooden stick
it's like a pair of scissors cutting the stick in the middle, so it's called shear force. Shear force can be calculated by formula

radial force generally refers to the force acting on a cylindrical object, the direction of which passes through the center of the cross section of the object and is perpendicular to the axis of the object, or the force acting on a spherical object passing through the center of the ball, which is called radial force
simply speaking, it is the force acting on the diameter direction.
when the motor uses the pulley to output power, the motor shaft is only subjected to the radial force
when the bench drill is drilling, the drill pipe is only subjected to axial force
when turning, the spindle of lathe is mainly subjected to radial force and axial force

6. Concept:
generally, it refers to the force acting on a cylindrical object, the direction of which passes through the center of the cross section of the object and is perpendicular to the axis of the object, or the force acting on a spherical object passing through the center of the ball, which is called radial force. In short, it is the force acting on the diameter direction

for example:
when the motor uses pulley to output power, the motor shaft is only subjected to radial force
when the bench drill is drilling, the drill pipe is only subjected to axial force
when turning, the spindle of lathe is mainly subjected to radial force and axial force.

7.

1. Radial direction refers to the direction passing through the axis line in the radial plane. In bearing terminology, there are usually radial clearance, radial plane, etc. Along a straight line of diameter or radius, or perpendicular to the axis

2, the axial direction is usually for cylinder like objects, which is the direction of the central axis of rotation of the cylinder, that is, the common direction with the central axis“ "Radial" is perpendicular to "axial", that is, the radius or diameter direction of the cylinder end circle. The radial direction is perpendicular to the axial space. This concept is also used in analyzing the force or motion of objects in physics

< H2 > extended data:

distinguish between radial direction and axial direction

1. Radial direction is a straight line direction along diameter or radius or perpendicular to axis. In the surface, it usually refers to the direction of the straight line passing through a point in the tangent plane with a point as the center. In radio navigation or radio measurement, especially the direction of magnetic lines of force extending through a central point (line)

2. Generally speaking, the axial direction is the direction of the central axis of rotation of the cylinder, which is the common direction with the central axis“ "Radial" is perpendicular to "axial", that is, the radius or diameter direction of the cylinder end circle. The radial direction is perpendicular to the axial space. This concept is also used in analyzing the force or motion of objects in physics

radial stiffness:

radial stiffness is the force required for the radial unit deformation of the spindle or rigid parts such as bearings and lead screws. Stiffness refers to the ability of a material or structure to resist elastic deformation. It is the characterization of the difficulty of elastic deformation of material or structure. The stiffness of a material is usually measured by the molus of elasticity E. In the macro elastic range, stiffness is the proportional coefficient of the load and displacement of the part, that is, the force required to cause the unit displacement. Its reciprocal is called flexibility, which is the displacement caused by unit force. Stiffness can be divided into static stiffness and dynamic stiffness

radial load:

the direction parallel to the axis is called axial load; The direction perpendicular to the axis (the same as the diameter) is called radial direction. When the belt is pulled by the pulley of the motor, the motor is subjected to radial load. When the lathe is clamping the workpiece to drill a large hole, the lathe spindle is subjected to axial load

< H2 > reference: network axial Network Radial