Product Description

Product Description:

We updated it; LED recognizes hardware and software, making it very fast to program your information.
Now you can enter information via WiFi and USB, and you can choose any way you like.
Enter information via USB
1. Install the CD software on your computer.
2. Enter the setup password 168, enter the manually filled device type, smart setup serial number, and the height and width of the screen.
3. Input the contents, insert the USB flash drive into the computer, export the USB flash drive to confirm success. Unplug the USB disk, insert it into the USB interface of the display screen, wait 10 seconds and pull it out.
Input information through mobile WIFI
Support Andrews and iOS iPhone mobile phone system, mobile phone scan CD or manual and any QR code on the back of the display of downloaded software
1. Find WiFi through your phone and click the link to display the hot spot
2. Enter the password :88888888
3. Plan your message, click Send, and your message will now appear on the screen.
Other functions for your use only
Customizing your desired message and highlighting your personality is a powerful way to embed your brand in customers’ minds:
1. Display ability: all kinds of languages, characters, numbers and symbols. The font size of the text message can be adjusted, the scroll speed can be adjusted, and the brightness of the display can be adjusted.
Multiple languages are supported: English/Chinese (simple and traditional) Arabic/Hebrew/Russian/Spanish/German, French, Japanese, Portuguese, Thai and other world languages.
Function
49 display effect, multi-action display, including snow, spray, rotation, rolling, etc., you can choose different rolling action, such as flashing, static, left, right, etc.
SMS can be programmed, SMS can be fixed, mobile, SMS bright, fast, attractive advertising.
User-friendly programming software and manuals that support software upgrades for the entire life of the software.
Stored messages support multiple text displays
Support week, time display HH:MM:SS and countdown display :DDD:HH:MM:SS. It has the function of time memory.
Energy saving: energy saving and high efficiency, 4 level brightness adjustable
Working power supply :110-220V.
Work on computers, laptops, power supplies, sockets. USB cable and AC adapter included.
Best viewing distance :1-10 meters
Life: 100,000 hours
Warranty :2 years.
(including packing)
1 X Leader Signature
1 x USB interface
1 x metal chain
Plug the 1X directly into the power cord
1X CD, software and manuals
Packing mode: color box packing, separate custom white box packing.

Pre-sales service:
1. We have rich experience in LED display engineering at home and abroad, and provide customers
with on-site product installation, commissioning and maintenance services.
2. The company can train users according to the manual, the training content includes system use, system maintenance and equipment protection, pre-sales, after-sales, all for our customers.
After-sales service:
1. Service principle: respond in time, solve problems in the first time, and ensure use.
2. Service period: During the maintenance period of LED panel body, all maintenance fees are exempted; After the maintenance period, only the material fee is charged, not the labor fee.
3. Service scope: If users find any problems that can not be solved, please contact our company, we can respond within 24 hours.
4. In order to shorten the maintenance time, every order of the company will be equipped with: modules, power supply, chips and other spare parts.
The Company will be responsible for the equipment during normal use and storage.

Frequently Asked Questions:
1: Are you a trading company or a manufacturer?
We are a professional manufacturing and trading as 1 of the company has 10 years of history.
2. Is this product easy to install?
Yes, it has a locking system and it’s easy to install.
3. Can I customize the size of the LED screen wall?
Yes, we can customize it according to the size of your venue.
4. Do you have a minimum order limit for the LED screen wall?
The minimum order quantity for sample inspection is 1 PCS, but the customer needs to pay the sample fee and the express fee.
5. How about your delivery time?
Typically, it takes 5-7 days for samples and 15-25 working days for bulk orders
6. I don’t have a freight forwarder in China, how to transport the goods?
Don’t worry, you can entrust us to transport the goods for you through DHL, UPS, FedEx or TNT. Air and sea freight are also optional.
7. Do you provide warranty for the product?
Yes, it’s guaranteed for 2 years from the date of delivery.
8. What are your terms of payment?
T/T, L/C, Western Union,
9. How do I get technical support?
We often participate in exhibitions around the world every year, so if you need, we can visit you.
For more information, please contact us:
 

How to Calculate the Diameter of a Worm Gear

In this article, we will discuss the characteristics of the Duplex, Single-throated, and Undercut worm gears and the analysis of worm shaft deflection. Besides that, we will explore how the diameter of a worm gear is calculated. If you have any doubt about the function of a worm gear, you can refer to the table below. Also, keep in mind that a worm gear has several important parameters which determine its working.

Duplex worm gear

A duplex worm gear set is distinguished by its ability to maintain precise angles and high gear ratios. The backlash of the gearing can be readjusted several times. The axial position of the worm shaft can be determined by adjusting screws on the housing cover. This feature allows for low backlash engagement of the worm tooth pitch with the worm gear. This feature is especially beneficial when backlash is a critical factor when selecting gears.
The standard worm gear shaft requires less lubrication than its dual counterpart. Worm gears are difficult to lubricate because they are sliding rather than rotating. They also have fewer moving parts and fewer points of failure. The disadvantage of a worm gear is that you cannot reverse the direction of power due to friction between the worm and the wheel. Because of this, they are best used in machines that operate at low speeds.
Worm wheels have teeth that form a helix. This helix produces axial thrust forces, depending on the hand of the helix and the direction of rotation. To handle these forces, the worms should be mounted securely using dowel pins, step shafts, and dowel pins. To prevent the worm from shifting, the worm wheel axis must be aligned with the center of the worm wheel’s face width.
The backlash of the CZPT duplex worm gear is adjustable. By shifting the worm axially, the section of the worm with the desired tooth thickness is in contact with the wheel. As a result, the backlash is adjustable. Worm gears are an excellent choice for rotary tables, high-precision reversing applications, and ultra-low-backlash gearboxes. Axial shift backlash is a major advantage of duplex worm gears, and this feature translates into a simple and fast assembly process.
When choosing a gear set, the size and lubrication process will be crucial. If you’re not careful, you might end up with a damaged gear or 1 with improper backlash. Luckily, there are some simple ways to maintain the proper tooth contact and backlash of your worm gears, ensuring long-term reliability and performance. As with any gear set, proper lubrication will ensure your worm gears last for years to come.

Single-throated worm gear

Worm gears mesh by sliding and rolling motions, but sliding contact dominates at high reduction ratios. Worm gears’ efficiency is limited by the friction and heat generated during sliding, so lubrication is necessary to maintain optimal efficiency. The worm and gear are usually made of dissimilar metals, such as phosphor-bronze or hardened steel. MC nylon, a synthetic engineering plastic, is often used for the shaft.
Worm gears are highly efficient in transmission of power and are adaptable to various types of machinery and devices. Their low output speed and high torque make them a popular choice for power transmission. A single-throated worm gear is easy to assemble and lock. A double-throated worm gear requires 2 shafts, 1 for each worm gear. Both styles are efficient in high-torque applications.
Worm gears are widely used in power transmission applications because of their low speed and compact design. A numerical model was developed to calculate the quasi-static load sharing between gears and mating surfaces. The influence coefficient method allows fast computing of the deformation of the gear surface and local contact of the mating surfaces. The resultant analysis shows that a single-throated worm gear can reduce the amount of energy required to drive an electric motor.
In addition to the wear caused by friction, a worm wheel can experience additional wear. Because the worm wheel is softer than the worm, most of the wear occurs on the wheel. In fact, the number of teeth on a worm wheel should not match its thread count. A single-throated worm gear shaft can increase the efficiency of a machine by as much as 35%. In addition, it can lower the cost of running.
A worm gear is used when the diametrical pitch of the worm wheel and worm gear are the same. If the diametrical pitch of both gears is the same, the 2 worms will mesh properly. In addition, the worm wheel and worm will be attached to each other with a set screw. This screw is inserted into the hub and then secured with a locknut.

Undercut worm gear

Undercut worm gears have a cylindrical shaft, and their teeth are shaped in an evolution-like pattern. Worms are made of a hardened cemented metal, 16MnCr5. The number of gear teeth is determined by the pressure angle at the zero gearing correction. The teeth are convex in normal and centre-line sections. The diameter of the worm is determined by the worm’s tangential profile, d1. Undercut worm gears are used when the number of teeth in the cylinder is large, and when the shaft is rigid enough to resist excessive load.
The center-line distance of the worm gears is the distance from the worm centre to the outer diameter. This distance affects the worm’s deflection and its safety. Enter a specific value for the bearing distance. Then, the software proposes a range of suitable solutions based on the number of teeth and the module. The table of solutions contains various options, and the selected variant is transferred to the main calculation.
A pressure-angle-angle-compensated worm can be manufactured using single-pointed lathe tools or end mills. The worm’s diameter and depth are influenced by the cutter used. In addition, the diameter of the grinding wheel determines the profile of the worm. If the worm is cut too deep, it will result in undercutting. Despite the undercutting risk, the design of worm gearing is flexible and allows considerable freedom.
The reduction ratio of a worm gear is massive. With only a little effort, the worm gear can significantly reduce speed and torque. In contrast, conventional gear sets need to make multiple reductions to get the same reduction level. Worm gears also have several disadvantages. Worm gears can’t reverse the direction of power because the friction between the worm and the wheel makes this impossible. The worm gear can’t reverse the direction of power, but the worm moves from 1 direction to another.
The process of undercutting is closely related to the profile of the worm. The worm’s profile will vary depending on the worm diameter, lead angle, and grinding wheel diameter. The worm’s profile will change if the generating process has removed material from the tooth base. A small undercut reduces tooth strength and reduces contact. For smaller gears, a minimum of 14-1/2degPA gears should be used.

Analysis of worm shaft deflection

To analyze the worm shaft deflection, we first derived its maximum deflection value. The deflection is calculated using the Euler-Bernoulli method and Timoshenko shear deformation. Then, we calculated the moment of inertia and the area of the transverse section using CAD software. In our analysis, we used the results of the test to compare the resulting parameters with the theoretical ones.
We can use the resulting centre-line distance and worm gear tooth profiles to calculate the required worm deflection. Using these values, we can use the worm gear deflection analysis to ensure the correct bearing size and worm gear teeth. Once we have these values, we can transfer them to the main calculation. Then, we can calculate the worm deflection and its safety. Then, we enter the values into the appropriate tables, and the resulting solutions are automatically transferred into the main calculation. However, we have to keep in mind that the deflection value will not be considered safe if it is larger than the worm gear’s outer diameter.
We use a four-stage process for investigating worm shaft deflection. We first apply the finite element method to compute the deflection and compare the simulation results with the experimentally tested worm shafts. Finally, we perform parameter studies with 15 worm gear toothings without considering the shaft geometry. This step is the first of 4 stages of the investigation. Once we have calculated the deflection, we can use the simulation results to determine the parameters needed to optimize the design.
Using a calculation system to calculate worm shaft deflection, we can determine the efficiency of worm gears. There are several parameters to optimize gearing efficiency, including material and geometry, and lubricant. In addition, we can reduce the bearing losses, which are caused by bearing failures. We can also identify the supporting method for the worm shafts in the options menu. The theoretical section provides further information.