Product Description
High Precision Agricultural Plastic Products Manufacturing Service ABS Plastic Injection Molding CNC Machining Parts
Product Information
Product Information:
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| 1 | Business Type: | Custom CNC Milling Service (3-axis, 4-axis, 5-axis) Custom CNC Turning Services EDM Wire-EDM |
| 2 | Standard: | JIS, ANSI |
| 3 | Products Range: | Automobile parts,wind power generation equipment accessories,wind power generation equipment accessories, ER fluid, medical apparatus and instruments, standardization of custom, moto parts, machinery parts, lighting components, hardware accessories, electric motor products, etc |
| Agricultural machinery, electrical appliances, furniture hardware | ||
| 4 | Materials: | 1.Stainless Steel: SS201, SS303, SS304, SS316 etc. |
| 2.Carbon Steel: AISI 1045, 9SMnPb28 etc | ||
| 3.Brass: C36000 (C26800), C37700 (HPb59), C38500(HPb58), C27200(CuZn37), C28000(CuZn40) etc. | ||
| 4.Bronze:C51000, C52100, C54400, etc. | ||
| 5.Iron:Grey iron and ductile iron | ||
| 6.Aluminum:6061, 6063,7075,5052 etc. | ||
| 7.Magnesium Alloy: AZ31, AZ61, AZ91 | ||
| 8.Plastic: PEEK, POM, NYLON, ABS…etc | ||
| 9.Titanium: TC4 | ||
| 5 | Machining: | Turning, Milling, Drilling, Grinding, Cleaning, |
| 6 | Main equipments | CNC lathe, CNC milling, Stamping machine, |
| Automatic  lathe,  Grinder,  Tapping | ||
| Drilling  machine…etc | ||
| 7 | Measuring & Testing  equipments | CMM, Profile Projector, Rockwell Hardness Tester, CZPT Hardness Tester, Roughness Tester, Micrometers, height gauge, Calipers… etc. |
| 8 | Accuracy: | Accuracy Of Machining:+/-0.005mm |
| Accuracy Of Grinding:+/-0.005mm | ||
| Surface Roughness:Ra0.8 | ||
| Parallelism:+/-0.005mm | ||
| Verticality:+/-0.005mm | ||
| Concentricity:0.003mm | ||
| 9 | Surface Treatment:  | Polishing, Deburring, Chrome Plating, Ni Plated, Zinc plated, Silver platinng |
| Anodizing various colors, Carburizing Nitriding, Heat Treatment, etc… | ||
| 10 | MOQ | 1 ~10000pcs. |
| 11 | DRW Format: | DWG, PDF, IGS, STEP, SLDPRT, SLDDRW, PRT, DRW, DXF, X_T, etc… |
| 12 | QC System: | 100% Inspection before shipment |
| 13 | Certificate | ISO9001: 2015, SGS Factory Audit |
| 14 | Payment Term: | 30% T/T + 70% T/T, Western Union, PayPal, L/C |
| 15 | Trade Terms: | FOB, CIF, L/C |
| 16 | Lead time: | 7~45 days after confirming |
| 17 | Sample Lead Time:Â | 3-7 Working Days |
| 18 | Transport Package:Â | Foam/wooden box, Anti-rust paper, Small box and carton, Pallets… etc. |
| 19 | Origin:Â | China |
| 20 | Our Advantages: | Reliable Quality |
| Competitive Price | ||
| High precision, high quality, high accurancy | ||
| Continuous Improvement | ||
| Defect-Free Products | ||
| On-Time Delivery | ||
| Customer Satisfaction | ||
| Excellent After-Sales Service |
Production Process
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Company Profile
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JieChen Precision Manufacturing Co., Ltd is a professional precision machining parts manufacturer. We specialize in precision machining parts processing, precision tooling, jig & fixture, automation equipment design and manufacturing.
Since its establishment in 2012, the company has been developing at a high speed. Now with big space workshop and many advanced production equipments and precision measure equipments.
Customers distributes to Europe and the United States, Japan, Germany, England and the mainland international well-known enterprises, the company has been focusing on human resources development and training, provide the broad development space for the employees.
Products covered the defense, aerospace, electronics, medical, semi-conductor, automation and other industries. With parts variety, high precision, large, medium batch processing parts, product precision reached 0.002 mm, in compliance with ISO, ASME, DIN, JIS quality systems.
JieChen Precision – Your Right Choice!
Quality Control Standards
 To consistently exceed customer expectations, qua lity control and assurance is achieved through
 Comprehensive written procedures and policies
 Fully equipped inspection department
 Detailed records of incoming raw materia
 Consistent calibration and labeling of inspection tools
 Analysis of root cause of non-conformances.
 Staff members being strongly encouraged to sugqest improvements in methods, materials and suppliers
Certifications
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Application instructions
Packaging & Shipping
FAQ
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Q: Are you trading company or manufacturer ?
A: We are direct factory with experienced engineers and employees as well as well-organized workshop.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes,  the sample fee depends on the product geometry, and the fee will be returned to your bulk order.
Q: How long can I get the sample?
A: Depends on your part geometry, normally within 3-7 days.
Q: How long is your delivery time?
A: Sample 3-7days; Mass production order 7-45 days depends on quantity and part complexity.
Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance ,balance before shippment.
Q: What’s kinds of information you need for a quote?
A: Kindly please provide the product 2D drawing with PDF or DWG format and 3D drawings  with STEP or IGS or X_T format, and other requirements like: surface treatment, quantity…etc.
Q: What is your standard PO procurement process flow?
A: Prototyping —-> FA approval —-> Quality Control Plan —> Manufacturing Process Instruction —> Batch Production —> Inspection —> Shipping
Q:Â What shall we do if we do not have drawings?
A. Please send your sample to our factory, then we can copy or provide you better solutions. Please send us pictures or drafts with dimensions (Length, Height, Width), CAD or 3D file will be made for you if placed order.
Q:Â Will my drawings be safe after sending to you?
A: Yes, we can sign the NDA before got your drawing and will not release to the third party without your permission
Q: Is it possible to know how are my products going on without visiting your company?
A: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which
show the machining progress
Q: How to enjoy the OEM services?
A: Usually, base on your design drawings or original samples, we give some technical proposals and a quotation
to you, after your agreement, we produce for you.
If you have another question, pls feel free to contact usÂ
Ball Screws – Dimensions, Applications, and Benefits
Ball screws are popular, lightweight, precision mechanical components. They are commonly used in machinery, gears, and knurled objects. These screw-like parts can be easily maintained and lubricated using oil. This article discusses their dimensions, applications, and benefits. The following sections provide additional information to help you select the right ball screw for your needs. We’ll discuss some of the important characteristics of ball screws and what makes them so useful.
Preloading
A key problem with nut-to-ball screw backlash is the ability of the nut to move freely on the threads of the ball screw. To solve this problem, a patented solution was developed. The patent, 4,557,156, describes an innovative method for preloading ball screws and nuts. By applying a preloading nut, the threads of the ball screw are prevented from moving back and forth with the nut.
A mechanical design that involves axial play involves a lot of mass, inertia, and complexity. These characteristics lead to wear and rust problems. Preloading ball screws using a dynamic system reduces mechanical complexity by allowing preload to be adjusted while the mechanism is running. This also reduces the number of mechanical parts and simplifies manufacturing. Thus, the preloading method of the present invention is advantageous.
The servo motors used in the system monitor the output torque and adjust the power to 1 motor in a dynamic way, thus creating a torque differential between the balls. This torque differential in turn creates a preload force between the ball nuts. The servo motors’ output torque is controlled in this manner, and the machine’s backlash clearance can be precisely controlled. Hence, the machine can perform multiple tasks with increased precision.
Several prior art methods for preloading ball screws are described in detail in FIG. 3. The helical thread grooves of the ball screw 26 and the nut 24 define a pathway for roller balls to travel along. The stylized broken line indicates the general position of the axis of the ball roller screw 26. The corresponding ball screws are used in a number of applications. This technique may be used to manufacture custom-sized screws.
Lubrication
Ball screws are mechanical elements that roll balls through a groove. Improper lubrication can reduce the life of these screw elements. Improper lubrication can lead to shaft damage, malfunction, and decreased performance. This article discusses the importance of proper lubrication and how to do it. You can learn how to properly lubricate ball screws in the following paragraphs. Here are some tips to ensure long-term performance and safety of ball screws.
The first thing you should do is determine the type of lubricant you’ll be using. Oils are preferred because they tend to remain inside the ball nut, and grease can build up in it. Oils also tend to have better anti-corrosion properties than grease. However, grease is more likely to be clogged with debris than oils. So, before you choose the lubricant that’s right for your screw, make sure you wash it off.
The oil used in ball screw lubrication must be applied at a controlled rate. It can prevent metal-on-metal contact and clean out contaminants as it passes through the ball nut. However, oil as a lubricant is expensive and can contaminate the process if it mixes with the cutting fluid. Grease, on the other hand, is inexpensive, requires fewer applications, and does not contaminate process fluids.
If you use a synthetic oil for lubrication, make sure to choose a viscosity that is appropriate for the operating temperature. Oil viscosity can increase the temperature of the ball screw assembly, and excessive oil can reduce its life. A correct amount of oil will reduce the temperature of the ball screw assembly, while too little will increase friction and wear. Use the following guidelines to determine the right amount of oil for your screw.
Dimensions
Dimensions of ball screws are a very important aspect to consider when determining the best type for your application. Technical acceptance conditions for ball screws specify the allowed deviations during acceptance tests. The tolerance class can also change, depending on the needs of a specific application. The following table lists the most important tolerance values for the full range of screw lengths. This table is a helpful guide when looking for a specific screw. The table below lists the dimensions of common ball screws.
The axial load applied to a ball screw is 0.5 x Fpr / 2Fpr. The minimum screw diameter is known as the root diameter. The axial load causes the screw shaft to deform in a certain way (DL1 and DL2). The elastic deflection induced by the load on a ball screw is called its rigidity. This rigidity is important for calculating sizing parameters for a ball screw.
The preload value of the ball screw affects the dynamic load capacity. A preload of 10 percent is considered adequate, while a value greater than this may compromise the screw’s durability. In general, a high preload value will result in a lower dynamic load capacity and greater wear. However, the preload value must be calculated with the relevant screw parameters. This is because a high preload value reduces the screw’s durability.
To ensure that your screw meets the specified parameters, the dynamic load capacity must be calculated. This is the amount of force a ball screw will withstand under a specified load. This calculation also includes strength checks. If you are using a ball screw for applications that need extra strength, it may require a safety factor. For example, if the screw is used for double-axial mounting, then the outer ball nut must be inserted into the nut, causing a secondary load.
Applications
The present invention provides a simple, yet highly effective way to mount a ball screw. Its absence of insert slots or through holes makes it simpler to assemble and provides a more uniform nut. The lack of mechanical features also reduces heat treatment issues, and the nut’s hardness can be uniformly hardened. As a result, the screw’s overall performance is improved. Here are some examples of applications for ball screws.
Preloading is the process of applying force to a ball screw. This increases the rigidity of the screw assembly and eliminates backlash, which is lost motion caused by clearance between the nut and ball. Backlash disrupts repeatability and accuracy. Spacer preloading involves inserting force between 2 ball nuts and transmitting it through the grooves. This method is ideal when preloading is needed in large quantities. In addition to increasing rigidity, preloading can improve accuracy.
Ball screws require careful care in their working surfaces to prevent contamination. Rubber or leather bellows can be used to protect their surfaces, while positive air pressure can be applied to the screw. Preloading eliminates backlash, a common problem among screw assemblies. In addition to the numerous applications for ball screws, they are also critical to computer-controlled motion-control systems and wire bonding. And there are many more examples. So what are the benefits of using these devices?
The spring preloading system uses a spring in between 2 ball nuts, applying tensional forces to the ball nuts. This spring creates grooves in the nut’s middle, which facilitates recirculation of the balls. The spring preloading mechanism is more compact than the double nut mechanism, but the lengthening of the lead reduces the ball screw’s load capacity. Its compact design makes it ideal for small clearance assemblies.
Maintenance
In addition to performing maintenance tasks yourself, the manufacturer of ball screws should offer reverse engineering services that will enable them to identify specific problems. The process of reverse engineering allows ball screw manufacturers to develop new ball screws and parts. In the event that a ball screw is beyond repair, a manufacturer can often save a significant amount of money by repairing it instead of replacing it. In addition to repairing a ball screw, the manufacturer should also offer free evaluation services for the component. Reconditioning and replacement involve the use of new parts, while reloading and replacement replace the screw.
Performing routine maintenance checks on ball screw assemblies is essential for maintaining optimal performance and extending their service life. Overtime, excessive wear can lead to a variety of problems, including backlash, vibration, and ball bearing noise. In addition, the increased friction increases the required torque for turning a screw, causing system failure and significant downtime. To ensure that a ball screw is fully functional, it must be checked for wear and maintain the proper lubrication system.
Discoloration or pitting on a ball screw indicates that it is in need of repair. The same is true if there are chatter marks in the ball groove. Oftentimes, a ball screw needs a new lubrication seal or wipers. Additionally, it may be missing or over-wearing, which could result in permanent failure. Finally, excessive power draw could be a sign of improper lubrication or improper installation.
Proper maintenance is essential for any machine tool. When performed properly, machine tools can last decades with continuous use. Proper care and maintenance is essential to ensure long life and optimal performance. In addition to improving machine tool uptime, proper maintenance affects the accuracy and repeatability of the end product. Therefore, premium machine tool manufacturers focus on the performance and durability of ball screws. They develop innovative designs and lubricants to optimize the lifespan of their products.
