Product Description
1, With more than 20 years experiences in aluminum casting;
2, Have 4 casting processes to fit different casting needs;
3, Nearby sea port and air port;
4, Passed ISO9001:2008/Rosh/SGS
5, Control whole process from casting, machining to finishing, which enable us offering our customers both good quality and shorter delivery time.
6, With samples and order: we can offer dimension report, chemical composition and mechanical properties
7, Control material with spectral and thermal analysis equipment (density and processing)
8, Spectral analysis of raw material and melting alloy liquid before casting.
| Material | -- Sand Casting&Gravity Die Casting&Low Pressure Die Casting: A356/A357/A319/A413/ZL101/ZL102/ZL104/ZL107/LM6//LM/20/LM25/EN AC-42100/EN AC-42200/EN AC-43000/EN AC-43200/EN AC-43300/EN AC-43400/EN AC-44200/EN AC-44300/EN AC-46000/EN AC-46200 -- High Pressure Die Casting: |
| Processes | -- Aluminum Sand Casting -- Gravity Die Casting -- High Pressure Die Casting -- Low Pressure Die Casting -- CNC Machining -- Quick Prototyping -- Finishing Services |
| Casting Facilities | -- 2 green sand casting lines, 4 resin sand castings lines -- 14 sets of gravity die casting machines -- 10 sets of high pressure die casting machines ranging 125T/180T/250T/280T/500T/800T/1250T/1650T -- 4 sets of low pressure die casting machines range from 500KG to 800KG |
| Machining Facilities | -- 3 sets of vertical CNC milling machines -- 11 sets of horizontal CNC milling machines (4 of which are 4-axis) -- 8 sets of CNC lathes -- 8 sets of drilling machines -- 8 sets of tapping machines -- 2 sets of shot blasting machine -- 4 sets of punching machines |
| Surface Treatment | -- Zinc/Brass/Chrome/Nickel Plating, Polishing, Mirror Polishing, Painting, Powder Coating, E-coating, Anodizing, Pad printing, Silk Screening |
| Inspection Facilities | -- Spectrograph, CMM, Resin Sand Analysis Device, X-Ray Detection Eqipment, Leak Test Equipment, Hardness Test Device, Meallography Analysis Device, Salt Spray Test Chamber, etc. |
| Standard | -- ASTM, DIN,JIS, EN, ISO, GB |
| Software | -- Pro/E,UG, Solidworks, Auto CAD |
1, Are you factory or trading company?
We are a 20-year-experienced aluminum casting company/manufacturer dedicated to manufacture various cast aluminum products and supply our client one-stop service from aluminum casting to finishing. Normally, it's a symbol of trading company that always advertise they can supply all kinds of metal castings. Unlike trading companies, we are a professional aluminum foundry and we only manufacture and supply cast aluminum related products and services. If you need products beyond cast aluminum products, we are pleased to introduce some reliable manufacturers for free.
2, How to get quotation from you?
Our quotation is based on 3d models or detailed 2d drawings from clients. Samples are also acceptable to calculate price. We welcome 3d models in native UG (.prt), Pro/E (.prt), Solidworks (.sldprt) format. 3d files in other common format as .igs, .stp, .x_t, .x_b, .sat are also acceptable.
3, How long do we have to wait until getting your pricing?
Our quotation will be ready within 48 hours after receiving client's inquiry. For urgent case, the time can be shortened to few hours.
4, How about your lead time?
The lead time depends on the aluminum casting process:
-Aluminum sand casting: mold takes 1-2 weeks, samples will be ready within 1 week after mold, and mass production takes 3-8 weeks after sample approval by client;
-Gravity die casting: mold takes 2-3 weeks, samples will be ready within 1 week after mold, and mass production takes 3-8 weeks after sample approval by client;
-Low pressure die casting: mold takes 4-6 weeks, samples will be ready within 1 week after mold, and mass production takes 3-8 weeks after sample approval by client;
-High pressure die casting: mold takes 4-8 weeks, samples will be ready within 1 week after mold, and mass production takes 3-8 weeks after sample approval by client;
5, Can you produce based on samples?
Yes, we can. Our powerful reverse engineering capability enable us manufacture products exactly according to samples provided by clients.
6, What is your sample policy?
Sample will be free if the value within 20USD, but our client has to pay the freight cost. We will charge sample cost if the value beyond 20USD.
7, Can you provide samples on your web?
Sorry, we can't. We are OEM cast aluminum products manufacturer. The designing and drawings of our products belong to our clients. We sign NDA with all of our clients. As a professional aluminum foundry, we won't leak any sensitive information of our clients to any third party.
8, Can we use your existing tooling?
Sorry, we can't. The tooling property belongs to our client who paid, and our client can take the mold away any time they want. We have no right to use our client's mold for any third party without permission.
How to Choose the Right Worm Shaft
You might be curious to know how to choose the right Worm Shaft. In this article, you will learn about worm modules with the same pitch diameter, Double-thread worm gears, and Self-locking worm drive. Once you have chosen the proper Worm Shaft, you will find it easier to use the equipment in your home. There are many advantages to selecting the right Worm Shaft. Read on to learn more.
Concave shape
The concave shape of a worm's shaft is an important characteristic for the design of a worm gearing. Worm gearings can be found in a wide range of shapes, and the basic profile parameters are available in professional and firm literature. These parameters are used in geometry calculations, and a selection of the right worm gearing for a particular application can be based on these requirements.
The thread profile of a worm is defined by the tangent to the axis of its main cylinder. The teeth are shaped in a straight line with a slightly concave shape along the sides. It resembles a helical gear, and the profile of the worm itself is straight. This type of gearing is often used when the number of teeth is greater than a certain limit.
The geometry of a worm gear depends on the type and manufacturer. In the earliest days, worms were made similar to simple screw threads, and could be chased on a lathe. During this time, the worm was often made with straight-sided tools to produce threads in the acme plane. Later, grinding techniques improved the thread finish and reduced distortions resulting from hardening.
When a worm gearing has multiple teeth, the pitch angle is a key parameter. A greater pitch angle increases efficiency. If you want to increase the pitch angle without increasing the number of teeth, you can replace a worm pair with a different number of thread starts. The helix angle must increase while the center distance remains constant. A higher pitch angle, however, is almost never used for power transmissions.
The minimum number of gear teeth depends on the angle of pressure at zero gearing correction. The diameter of the worm is d1, and is based on a known module value, mx or mn. Generally, larger values of m are assigned to larger modules. And a smaller number of teeth is called a low pitch angle. In case of a low pitch angle, spiral gearing is used. The pitch angle of the worm gear is smaller than 10 degrees.
Multiple-thread worms
Multi-thread worms can be divided into sets of one, two, or 4 threads. The ratio is determined by the number of threads on each set and the number of teeth on the apparatus. The most common worm thread counts are 1,2,4, and 6. To find out how many threads you have, count the start and end of each thread and divide by two. Using this method, you will get the correct thread count every time.
The tangent plane of a worm's pitch profile changes as the worm moves lengthwise along the thread. The lead angle is greatest at the throat, and decreases on both sides. The curvature radius r" varies proportionally with the worm's radius, or pitch angle at the considered point. Hence, the worm leads angle, r, is increased with decreased inclination and decreases with increasing inclination.
Multi-thread worms are characterized by a constant leverage between the gear surface and the worm threads. The ratio of worm-tooth surfaces to the worm's length varies, which enables the wormgear to be adjusted in the same direction. To optimize the gear contact between the worm and gear, the tangent relationship between the 2 surfaces is optimal.
The efficiency of worm gear drives is largely dependent on the helix angle of the worm. Multiple thread worms can improve the efficiency of the worm gear drive by as much as 25 to 50% compared to single-thread worms. Worm gears are made of bronze, which reduces friction and heat on the worm's teeth. A specialized machine can cut the worm gears for maximum efficiency.
Double-thread worm gears
In many different applications, worm gears are used to drive a worm wheel. These gears are unique in that the worm cannot be reversed by the power applied to the worm wheel. Because of their self-locking properties, they can be used to prevent reversing motion, although this is not a dependable function. Applications for worm gears include hoisting equipment, elevators, chain blocks, fishing reels, and automotive power steering. Because of their compact size, these gears are often used in applications with limited space.
Worm sets typically exhibit more wear than other types of gears, and this means that they require more limited contact patterns in new parts. Worm wheel teeth are concave, making it difficult to measure tooth thickness with pins, balls, and gear tooth calipers. To measure tooth thickness, however, you can measure backlash, a measurement of the spacing between teeth in a gear. Backlash can vary from 1 worm gear to another, so it is important to check the backlash at several points. If the backlash is different in 2 places, this indicates that the teeth may have different spacing.
Single-thread worm gears provide high speed reduction but lower efficiency. A multi-thread worm gear can provide high efficiency and high speed, but this comes with a trade-off in terms of horsepower. However, there are many other applications for worm gears. In addition to heavy-duty applications, they are often used in light-duty gearboxes for a variety of functions. When used in conjunction with double-thread worms, they allow for a substantial speed reduction in 1 step.
Stainless-steel worm gears can be used in damp environments. The worm gear is not susceptible to rust and is ideal for wet and damp environments. The worm wheel's smooth surfaces make cleaning them easy. However, they do require lubricants. The most common lubricant for worm gears is mineral oil. This lubricant is designed to protect the worm drive.
Self-locking worm drive
A self-locking worm drive prevents the platform from moving backward when the motor stops. A dynamic self-locking worm drive is also possible but does not include a holding brake. This type of self-locking worm drive is not susceptible to vibrations, but may rattle if released. In addition, it may require an additional brake to keep the platform from moving. A positive brake may be necessary for safety.
A self-locking worm drive does not allow for the interchangeability of the driven and driving gears. This is unlike spur gear trains that allow both to interchange positions. In a self-locking worm drive, the driving gear is always engaged and the driven gear remains stationary. The drive mechanism locks automatically when the worm is operated in the wrong manner. Several sources of information on self-locking worm gears include the Machinery's Handbook.
A self-locking worm drive is not difficult to build and has a great mechanical advantage. In fact, the output of a self-locking worm drive cannot be backdriven by the input shaft. DIYers can build a self-locking worm drive by modifying threaded rods and off-the-shelf gears. However, it is easier to make a ratchet and pawl mechanism, and is significantly less expensive. However, it is important to understand that you can only drive 1 worm at a time.
Another advantage of a self-locking worm drive is the fact that it is not possible to interchange the input and output shafts. This is a major benefit of using such a mechanism, as you can achieve high gear reduction without increasing the size of the gear box. If you're thinking about buying a self-locking worm gear for a specific application, consider the following tips to make the right choice.
An enveloping worm gear set is best for applications requiring high accuracy and efficiency, and minimum backlash. Its teeth are shaped differently, and the worm's threads are modified to increase surface contact. They are more expensive to manufacture than their single-start counterparts, but this type is best for applications where accuracy is crucial. The worm drive is also a great option for heavy trucks because of their large size and high-torque capacity.
