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Wear Resistant 60Class Bevel Gear Wheel High Precision Stable

Categories Steel Gear Wheel
Brand Name: LBS
Model Number: According to drawings or sample
Certification: ccs
Place of Origin: Shijiazhuang Hebei China
MOQ: 1 Piece
Price: USD, EUR, RMB / Negotiable
Payment Terms: L/C, T/T, Western Union
Supply Ability: 1000 Pieces Per Month
Delivery Time: General order 15-30 days
Packaging Details: Export standard wooden case
Product Name: Alloy Steel Stable Gear Wheel
Material: Metal Alloy Steel
rocessing Type: Quenching
Heat Treatment: Surface Carburizing
Forging Heat-treatment: Normalizing Treatment
Accuracy Class: 60Class
Surface State: Grinding
Warranty: 13 Months
Supply abilitty: 2600sets /per month
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Wear Resistant 60Class Bevel Gear Wheel High Precision Stable

Wear-Resistant Stable Precision Alloy Steel Bevel Gear Wheel


Overview

ModelAlloy Steel Stable Gear Wheel
TypeRound/Worm gear/bevel/Non-round /Rac Plastic stainless steel
Tooth shapespur/bevel/curve/double gear
Production type

Casting/cutting/rolling/sintered gear

Wrappedwooden box

Application scope

textile, agriculture, mining, food, oil and other transmission machinery
Hardnesshardening
MOQ

≥100 pieces


product introduce

NameWear-Resistant Stable Precision Alloy Steel Bevel Gear Wheel
Machining module0.2-10
Materials:stee45#l, 40CR, Easy car iron (1214#), brass, tin bronze, POM(Sisteel), PVD, PVDFl, imported nylon, stainless steel 303#, stainless steel 304#, aluminum 606#, aluminum 6063#

Surface treatment: blackening,

high frequency, carburizing and quenching, surface nitriding, etc

Processing equipment:CNC lathes, automatic lathes, general lathes, hobbing machine, gear shaper, gear milling machine, shaving machine, milling machine, grinding machine, wire cutting, etc
Processing technologyhobbing, gear, shaving, milling teeth

The basic introduction of gears

Gear; A mechanical component with teeth on the rim that can continuously engage to transfer motion and power is a mechanical component with teeth that can mesh with each other. The diameter of the big gear is twice that of the small one. If the big gear does not move, how many times does the pinion revolve around the big one? Conversely, if the pinion does not move, how many times does the big pinion revolve around the pinion? The big gear does not move, the small gear along the big gear revolution one week, the small gear rotation one week; When the pinion does not move, the big gear rotates once around the pinion, and the big gear rotates once and a half, i.e., once at 240°, once and a half at 360°, two times at 480°, and three times at 720°.

Gear is a mechanical part with teeth that can mesh with each other. It is widely used in mechanical transmission and the whole mechanical field. Modern gear technology has reached: gear modulus 0.004 ~ 100 mm; Gear diameter from 1 mm to 150 meters; Transmission power up to 100,000 kilowatts; Speed up to hundreds of thousands of RPM; The highest circumferential speed is 300 m/s.


Structure classification

Generally there are tooth, tooth groove, end face, surface, tooth top circle, tooth root circle, base circle, indexing circle.

tooth

The tooth, referred to as tooth, is each convex part on the gear used for meshing. These convex parts are generally arranged radially, and the teeth on the matching gear are in contact with each other, so that the gear can keep meshing operation.

The cogging

Is the space between two adjacent teeth on a gear; The end face is a plane perpendicular to the axis of a cylindrical gear or worm.

End face

Is the plane at each end of the gear.

Method of surface

Refers to the plane perpendicular to the tooth line.

Addendum circle

The circle at the top of the tooth.

Dedendum circle

It's the circle at the bottom of the trough.

Base circle

The generating line that forms the involute as a pure rolling circle.

Dividing the circle

It is a reference circle for calculating the gear geometry in the end face

Role of gears

Gear is a mechanical part with teeth that can mesh with each other. The application of gear in transmission appeared very early. At the end of the 19th century, the development of the principle of tooth cutting method and the use of this principle of tooth cutting special machine tools and tools have appeared, with the development of production, the smoothness of gear operation by attention. The role of gear is to transfer the rotation of one shaft to another shaft, but also to achieve deceleration, increase, change and reverse action.


The main parameters

The number of teeth Z

Closed gear transmission generally has a high speed. In order to improve the smoothness of transmission and reduce the impact vibration, it is better to have more teeth. The number of teeth of pinion is z1=20~40. Open-type (semi-open-type) gear transmission, because the tooth is mainly wear failure, in order to make the gear is not too small, so the pinion should not choose too many teeth, generally desirable Z1 =17~20.

Spiral Angle

Beta & gt; 0 is left-handed;

Beta & lt; 0 for a right-handed

pitch

Pn = PTCOS β(subscripts n and t denote normal and end face marks respectively)

The modulus

Modulus refers to the ratio of the pitch p between the same tooth profile of two adjacent wheels and PI (m= P/PI), in millimeter. Modulus is one of the most basic parameters of modular gear. The modulus of spur, helical and bevel gears can be referred to the standard modulus series table (GB/T 1357-1987).

Mn = mtcos beta

M = p/PI

The circumference of the gear indexing circle is πd=z P

Module m is a basic parameter that determines the gear size. If the modulus of a gear with the same number of teeth is large, its size is also large.

Pressure Angle

Alpha rb = rcos alpha = 1/2 mzcos alpha

At the tangent point P of two gears' pitch circles, the acute Angle between the common normal of the two tooth profile curves (i.e. the force direction of tooth profile) and the common tangent of the two pitch circles (i.e. the instantaneous motion direction at point P) is called the pressure Angle, also known as the engagement Angle. For a single gear, it is the tooth Angle. The pressure Angle of standard gear is generally 20 ". In some cases, α=14.5°, 15°, 22.50° and 25° are also used.

Measure the diameter of a circle

d=m*z

Center distance

a=1/2*m(z1+z2)

Correct engagement condition

M1 = m2, alpha 1 = alpha 2, beta 1 = beta 2

To avoid root cutting, z1≥17 should be taken for the standard ruler cylindrical gear with α=20o. Z2 = u · z1.

Top height coefficient and top clearance coefficient

- a and C * * h

When two gears engage, the top of one gear always enters the root of the other gear. In order to prevent thermal expansion and storage of lubricating oil space, the root is required to be higher than the top of the tooth. The top height coefficient and top clearance coefficient are introduced.

Normal tooth: H * A =1; C*=0.25 short tooth: h*a =0.8; C * = 0.3


Classification is introduced

Gears can be classified according to tooth shape, gear shape, tooth line shape, tooth surface and manufacturing method.

Gear tooth profile includes tooth profile curve, pressure Angle, tooth height and displacement. Involute gears are relatively easy to manufacture, so in modern gears, involute gears account for the absolute majority, while cycloid gears and arc gears are rarely used.

In the aspect of pressure Angle, the bearing capacity of gear with small pressure Angle is small. While high pressure Angle gear, although the bearing capacity is higher, but in the case of the same transmission torque bearing load increases, so it is only used in special circumstances. The tooth height of the gear has been standardized, and the standard tooth height is generally used. The advantages of gear shift are more, has been throughout all kinds of mechanical equipment.

In addition, gear can also be divided into cylindrical gear, bevel gear, non-circular gear, rack, worm and worm gear according to its shape; According to the shape of tooth line is divided into spur gear, helical gear, herringbone gear, curve gear; According to the tooth surface is divided into outer gear, inner gear; According to the manufacturing method, it can be divided into casting gear, cutting gear, rolling gear, sintering gear and so on.

Gear manufacturing materials and heat treatment process have great influence on the bearing capacity, size and weight of gear. Before the 1950s, gears used carbon steel, alloy steel was used in the 1960s, and surface hardened steel was used in the 1970s. According to hardness, tooth surface can be divided into soft tooth surface and hard tooth surface.

Soft tooth surface gear bearing capacity is low, but relatively easy to manufacture, good running, more used for transmission size and weight without strict restrictions, as well as small production of general machinery. Because the load of small gear is heavier, the hardness of small gear tooth surface is generally higher than that of big gear in order to make the working life of big and small gear roughly equal.

Hard surface gear bearing capacity is high, it is in the gear after cutting, and then quenching, surface quenching or carburizing quenching treatment, in order to improve hardness. But in the heat treatment, the gear will inevitably produce deformation, so after the heat treatment must be grinding, grinding or fine cutting, in order to eliminate the error caused by deformation, improve the precision of gear.








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