Tag Archives: right angle precision planetary gearbox

China factory ZD Right Angle 142mm ZBR Series Precision Helical Gear Planetary Gearbox helical angle gearbox

Product Description

Right Angle 142mm ZBR Series Precision Helical Gear Planetary Gearbox 

Product Description

 

The high-precision planetary gearbox adopts helical gear design, and is used in various control transmission fields with servo motors, such as precision machine tools, laser cutting equipment, battery processing equipment, etc. It has the advantages of input and output integrated structure, large torque and high precision. The backlash of the ZBR series is less than 6 arc.min and the reduction ratio covers 3~20.

The Product Advantages of Planetary Gearbox:
1.Flexible structure design, in line with various working conditions.
2.Ring gear processing technology: Using internal gear slotting machine and hobbing machine; the precision of ring gear after processing can reach GB7.
3.Hardened gear secondary scraping technology: secondary high-speed dry cutting of gear eliminates gear deformation caused by heat treatment. Gear accuracy can reach GB6.
4.Reliable backlash testing.

Product Parameters

 

SPECIFICATIONS STAGE RATIO 060ZBR   090ZBR   115ZBR   142ZBR 180ZBR
RATED OUTPUT TORQUE N.M 1 3 36   90   195   342 588
4 48   120   260   520 1040
5 60   150   325   650 1200
6 55   150   310   600 1100
7 50   140   300   550 1100
8 45   120   260   500 1000
9 40   100   230   450 900
10 40   100   230   450 900
14 42   140   300   550 1100
20 40   100   230   450 900
Scram Torque N.m 1 3-200 3  times  of  rated  torque
Rated speed rpm 1 3-200 5000   4000   4000   3000 3000
Max speed rpm 1 3-200 10000   8000   8000   6000 6000
Backlash P0 arcmin 1 3-20   ≤2   ≤2   ≤2 ≤2
Backlash P1 arcmin 1 3-20 ≤4   ≤4   ≤4   ≤4 ≤4
Backlash P2 arcmin 1 3-20 ≤6   ≤6   ≤6   ≤6 ≤6
Torsional Rigidity N.M/arcmin 1 3-200 7   14   25   50 145
Allow radial N 1 3-200 1530   3250   6700   9400 14500
Allow axial N 1 3-200 630 1300 3000 4000 6200
Life hr 1 3-200 20000
Efficiency η % 1 3-20 ≥95%
Weight kg 1 3-20 2.1   6.4   13   24.5 51
Temperature ºC 1 3-200 -10ºC~+90ºC
Lubrication   1 3-200 SYNTHETIC LUBRICATING GREASE
Protection grade 1 3-200 IP 65
Assembly       Easy  and  simple
Noise( L=1M) dB(A) 1 3-200 ≤63   ≤65   ≤68   ≤70 ≤72

Outline Drawing:

 

Product type D1 D2 D3h6 D4g6 D5 D6 D7 L1 L2 L3 L4 L5 L6 L7
142ZBR 165 11 40 130 75 M16×2P 185 142 97 15 3 63 5 12
L8 L9 C14 C24 C34 C44 C54G6 C64 C74 C84 C94 C104 B1h9 H1
333 36 165 M10X1.5P ≤38 60 130 6 142 22.5 235.5 15 12 43

Parts: 

Compact output shaft mechanism

It adopts the design of output shaft integrated system, compact structure, high rigidity, and it can withstand large impact. Place the input coupling and the sun gear at the center of the output shaft to improve the concentricity of the components, thereby effectively controlling the gear clearance and improving the backlash of the whole gearbox.

 

Ring gear structure

The integral structure of the ring gear and the output flange improves its rigidity and reduces misassembly.

Bevel gear type

The allowable output torque is 30% higher than that of spur gears. Strict control of the gears ensures high-precision running backlash.
 

 

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Company Profile

 

FAQ

Q: What’re your main products?
A: We currently produce Brushed Dc Motors, Brushed Dc Gear Motors, Planetary Dc Gear Motors, Brushless Dc Motors, Stepper motors, Ac Motors and High Precision Planetary Gear Box etc. You can check the specifications for above motors on our website and you can email us to recommend needed motors per your specification too.

Q: How to select a suitable motor?
A:If you have motor pictures or drawings to show us, or you have detailed specs like voltage, speed, torque, motor size, working mode of the motor, needed lifetime and noise level etc, please do not hesitate to let us know, then we can recommend suitable motor per your request accordingly.

Q: Do you have a customized service for your standard motors?
A: Yes, we can customize per your request for the voltage, speed, torque and shaft size/shape. If you need additional wires/cables soldered on the terminal or need to add connectors, or capacitors or EMC we can make it too.

Q: Do you have an individual design service for motors?
A: Yes, we would like to design motors individually for our customers, but it may need some mold developing cost and design charge. 

Q: What’s your lead time?
A: Generally speaking, our regular standard product will need 15-30days, a bit longer for customized products. But we are very flexible on the lead time, it will depend on the specific orders.

Please contact us if you have detailed requests, thank you !

Application: Motor, Machinery, Agricultural Machinery, servo motor gearbox
Function: Speed Changing, Speed Reduction
Layout: Right Angel
Hardness: Hardened Tooth Surface
Installation: all directions
Step: Double-Step
Samples:
US$ 910/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

helical gearbox

How to Choose a Helical Gearbox

Choosing the best helical gearbox is dependent on the type of application you want to use the gear for. You will need to consider the contact ratios and the total of profile shifts required.

Spur gears are more efficient than helical gears

Compared to helical gears, spur gears have straight teeth that are parallel to the axis of the gear. Because they are more efficient, spur gears are often used in low speed applications. However, helical gears are better for low-noise and high-speed applications. Despite their advantages, spur gears are also used in some devices.
Spur gears are not as resilient as other gears. They are less efficient at transmitting power over long distances, and they generate too much noise at high speeds. They also impose a radial load on bearings. They also produce significant vibration that can limit the maximum speed of operation.
Helical gears are better at transferring loads. They are used in a number of applications, including car transmissions, elevators, and conveyors. Helical gears also generate large amounts of thrust. They are also quieter than spur gears.
Unlike spur gears, helical gears use bearings to support their thrust load. They also have more teeth, so they can handle more load than spur gears. They can also be used in non-parallel shafts.
Helical gears are generally used in high-speed mechanical systems. They also have less wear on individual teeth and are quieter running than spur gears.
Helical gears are a refinement of spur gears. They are also used in the printing industry, elevators, and gearboxes for automobiles. They are often used in conjunction with a worm gear to distribute load. They have a higher speed capacity, but they are not as efficient as spur gears. They are used in some high-speed mechanical systems because they generate less noise and vibration.
Spur gears are commonly used in low-speed applications, like rack and pinion setups. Their design makes them more efficient at transmitting power, but they are less resilient than helical gears.
Design space is limited based on a required center distance, target gear ratio, and sum of profile shifts
Using statistically derived parameters, the authors performed a multi-objective optimization of the profile shift of two external cylindrical gears. The main objective of this study was to maximize efficiency and minimize the amount of power lost in the optimized space.
To do this, the authors used a multi-objective optimization algorithm that included all aspects of the optimal profile shift. The algorithm evaluates objective function over a series of generations to determine the best solution.
The multi-objective optimization algorithm was based on a verified optimization algorithm. This algorithm combines analytical pressure loads estimation with an effective method for calculating the deformations of the gear case. Using the aforementioned formulae, the authors were able to identify a feasible solution. The numerical calculations also showed that the corresponding specific sliding coefficients were perfectly balanced.
To identify the most efficient method for determining the profile shift, the authors selected the most efficient method based on the objectives of efficiency and mass. The efficiency objective was considered to be the largest given the small size of the resulting optimization space. This objective is useful in reducing wear failures.
helical gearbox
The largest thermal treatment of a cylindrical gear is case hardening. The ISO/TR 4467:1982 standard provides a practical guide for gears. The largest radii of the pinion and wheel are rb1 and rb2. The ratio of tooth width to base circle diameter of the pinion is normally set to less than 1.
Sliding velocity increases as the distance from the pitch point increases in the line of action
Deflections of the involute profile of a helical gear occur due to the load on the teeth. However, the optimum pressure angle for the gear is not known.
The correct pressure angle for a helical gear cannot be calculated without a surface model. Assuming the pressure is uniform over the profile, a pressure angle of 20deg would be a good bet. However, this would require a mathematical model that can be derived from the Archard wear equation.
In general, the pressure angle will be influenced by the diameter, as well as the gear mesh geometry. It is important to know the actual angle of a helical gear since this will affect the curvature of the profile, the normal force, and the radial force.
The best way to measure the pressure angle is to consider the theoretical pitch diameter. If the pitch diameter is small, then the actual angle will be smaller. This will cause a gap between the flanks. However, it can also cause the gear to deform, leading to unexpected working behavior.
One interesting tangent is the pitch plane, an imaginary plane tangent to the pitch surfaces. The pitch plane is the plane perpendicular to the axial plane of the gear cross section. It is usually used as a reference point to calculate the transverse pressure angle.
The working pressure angle is the angle of the pressure line of the gear mesh. This angle is the same as the reference pressure angle, but the length of the contact line is reduced.
The best way to calculate the working pressure angle is to use the pressure line of the gear mesh. This will give a more accurate value. The actual angle of the pressure line is also related to the transmission ratio. This ratio is usually given as the nominal ratio of angular velocities. The actual velocities will fluctuate about this ratio.

Undercut of a helical gear tooth root

Having an undercut at the pinion root can affect the distribution of load along the line of contact of helical gears. This can result in higher than nominal loads on some teeth and amplitude modulated noise.
The tooth root is affected by a number of factors, including the shape of the tooth cutting tool. The cutting tool must be designed to avoid an undercut without reducing the number of teeth. This is achieved by a process called profile shifting.
Profile shift occurs when the cutting tool changes depth, thereby preventing an undercut. It is often used in the manufacturing process to achieve a greater overlap ratio. The higher the overlap ratio, the less variation there is between the contact lines. This reduces the dynamic tooth loads and reduces noise.
The profile shift is most often associated with the cutting tool tip. This is the point where the involute profile exits the gear, before the tip begins to taper. The involute profile can be defined for every transverse section of the gear face width. The boundary point is a point of tangency between the involute and root profiles.
The involute of a circle is a common way to define a gear-tooth profile. The involute is the path traced by the point on the line when rolling on a circle. It is a useful feature for cylindrical involute gears.
The helix angle is also important to the helical gear. It allows for greater contact capacity and increases the bending capacity of the gear. It must be included in specifications for helical teeth. The angle must be measurable and include the (+-) sign.
The bending strength of a tooth depends on the shape of the root. A large undercut reduces the strength of the tooth.helical gearbox

Contact ratios

Whether a helical gearbox is dynamic or steady-state, the contact ratio is a key factor. The total contact ratio defines the average number of teeth in contact in the plane of action. It is calculated by multiplying the transverse contact ratio with the overlap ratio. The overlap ratio is always non-zero.
The total contact ratio must be 1.0 or greater for a constant speed rotation on the driven side. Gears with a low total contact ratio are known to slow down rotation of the driven gear. The total contact ratio is influenced by the length of the contact line. A high contact ratio is a good choice for dynamic loading.
A low contact ratio results in a greater amount of profile shift and a larger amount of noise. If the contact ratio is too high, it may cause excessive EAP sliding velocity and cause scuffing. In addition, an uneven load share results in amplitude modulated vibrations.
A helical gear is a pair of slim spur gears. The gears are layered in a plane that runs parallel to the face width of the gear teeth. Each gear tooth makes contact with the flank of the next gear tooth. The helical gear tooth flank is a 3-dimensional surface that is a tangent to the base circles of the gears.
The tooth shape of the helical gear tooth is also a key factor in the contact ratio. The tooth form is designed to be in relation to the work piece, tooling, dedendum coefficients, tooth forces, and tooth bending stiffness. A gear tooth form must also relate to tooth surface kinematics and microgeometry modifications.
The active profile is a region of the involute profile between the start and end points. A tooth profile that satisfies the basic law of gear-tooth action is often called a conjugate profile.
China factory ZD Right Angle 142mm ZBR Series Precision Helical Gear Planetary Gearbox   helical angle gearboxChina factory ZD Right Angle 142mm ZBR Series Precision Helical Gear Planetary Gearbox   helical angle gearbox
editor by CX 2023-05-30