Ball screws are used to realize the transmission and positioning of mechanical motion, and the selection of their materials will directly affect their performance and life. The most commonly used ball screw materials include the following: 1. High carbon chromium steel: High carbon chromium steel has excellent hardness and strength and can withstand high loads and high-speed movements. This material is commonly used for the balls and raceways of ball screws. 2. Stainless steel: Stainless steel has good corrosion resistance and is suitable for applications in humid environments or in contact with corrosive media. Stainless steel ball screws are commonly used in areas such as food processing, medical equipment and semiconductor manufacturing. When selecting ball screw materials, you need to consider the requirements of your specific application, including factors such as load, speed, accuracy, and operating environment. Ball screws made of different materials will have their own advantages and limitations in different application scenarios, and they need to be selected according to specific circumstances. In addition, manufacturers and suppliers often provide recommendations and suggestions for different application needs. Customized ball screws, look for Nanjing Shuntai, professional technology and enthusiastic after-sales attitude to give customers a perfect shopping experience. Please contact us if you have any needs.

The ball screw is a mechanical transmission device widely used in many industrial and engineering fields. It consists of a screw and a nut. The screw is inlaid with balls. The use of the ball screw is similar to that of a traditional screw screw. However, due to the low friction characteristics and high efficiency of the balls, the ball screw has better performance than the traditional screw screw. performance. The main uses of ball screws include the following aspects: 1. Machine tools: Ball screws are often used in CNC machine tools, cutting machine tools and other automated mechanical equipment to achieve precise positioning and control of workpieces during processing. It can provide high-precision, high-speed and high-rigidity rotation, allowing the machine tool to perform processing operations quickly and accurately. 2. Robots: Ball screws are also widely used in industrial robots and other automation equipment to control the movement and position of robots to achieve precise positioning and motion control. Ball screws can provide high speed, high precision and high load capacity, allowing robots to complete complex tasks. 3. Aerospace: In the field of aerospace, ball screws are widely used in steering gear systems, servo mechanisms and control systems of aircraft and spacecraft to realize the movement of the rudder surface and the control of aviation equipment. Ball screws can provide high-precision, high-efficiency and high-reliability control, meeting the requirements for precision control in the aerospace field. 4. Medical equipment: In the field of medical equipment, ball screws are widely used in imaging equipment, surgical robots and other medical equipment to achieve precise position control and motion control. Ball screws provide high-precision, high-speed, and high-reliability motion control that are important for diagnostic and therapeutic operations. All in all, ball screws play an important role in many industrial and engineering fields to achieve precise positioning, motion control and position adjustment, and have the characteristics of high precision, high efficiency and high reliability.

Lubricant for ball screws is an important choice. Ball screws require proper lubrication during use to ensure their normal operation and longevity. Grease is a semi-solid lubricant made from a mixture of base oil and additives. Its high viscosity and adhesive properties allow it to adhere to the surface of the ball screw and provide long-lasting lubrication and protection. In comparison, lubricants are usually thin and do not adhere well to the ball screw. Selecting the appropriate grease requires consideration of a variety of factors, including operating ambient temperature, ball screw operating speed, load, and manufacturer's recommendations. Common grease types include general purpose grease, high temperature grease, low temperature grease and high speed grease. It is generally recommended to select a grease specifically designed for ball screws and perform regular lubrication and replacement in accordance with the manufacturer's requirements. For the best grease selection for a specific application, it is best to consult the equipment manufacturer or a professional engineer. They can provide advice on the operating conditions of the ball screw and the most suitable type of grease to ensure its proper operation and longevity. Proper selection and maintenance of grease is important to the reliability and life of your ball screw.

To adjust the axial clearance of a ball screw assembly, follow these general steps: 1. Determine the desired axial clearance: Before making any adjustments, it's important to know the recommended or desired axial clearance for your specific application. This information can typically be found in the manufacturer's documentation or technical specifications. 2. Prepare for adjustment: Make sure the ball screw assembly is in a position that allows access to the adjustment mechanism. This may involve disengaging the motor or any other components connected to the ball screw. 3. Locate the adjustment mechanism: Identify the specific mechanism used to adjust the axial clearance. This can vary depending on the design and manufacturer of the ball screw assembly. It could be an adjustment nut or a set of shims, for example. 4. Loosen retaining components: If there are any retaining components, such as lock nuts or set screws, that hold the adjustment mechanism in place, loosen them to allow for adjustment. Take care not to disassemble the ball screw assembly completely or damage any components. 5. Adjust the axial clearance: Use the appropriate tool or method to make the necessary adjustment. For an adjustment nut, you may need a wrench or spanner. For shims, you may need to add or remove them to achieve the desired clearance. Consult the manufacturer's documentation or guidelines for specific instructions on how to adjust the axial clearance for your particular ball screw assembly. 6. Verify clearance and reassemble: After making the adjustment, check the axial clearance with a suitable measurement tool, such as a dial indicator, to ensure it meets the desired specifications. Once the clearance is confirmed, reassemble any retaining components or fasteners that were loosened earlier, making sure everything is secure. 7. Test and evaluate: After the adjustment and reassembly, test the ball screw assembly to ensure its performance meets the intended requirements. Monitor its operation and functioning to confirm that the axial clearance adjustment has been successful. Note that these steps provide a general overview of the adjustment process. It's crucial to consult the specific instructions provided by the manufacturer of your ball screw assembly for accurate and detailed guidance on adjusting the axial clearance.

This article details the core role, technology selection, key parameters, installation and maintenance, and common problems of ball screws in welding robots, providing precise information tailored to the specific needs of welding conditions. I. Core Functions and Applications In welding robots, the ball screw is the core actuator of the linear motion chain, primarily used for: Parameters Recommended values ​​for welding robots Selection Guide Accuracy level C3-C5 Repeatability directly determines weld offset; C3 grade ground lead screws can achieve ±0.01mm positioning accuracy; C5 grade lead screws are available for heavy-duty spot welding applications. Preload level Intermediate preloading (P2-P3) Eliminate backlash, improve rigidity, and suppress positioning errors caused by welding vibration; avoid excessive preload leading to temperature rise and reduced service life. Lead and Diameter Small lead (5-10mm) is used for high-precision fine-tuning; large lead (16-25mm) is used for high-speed displacement. The smaller the lead, the higher the positioning accuracy; the larger the diameter, the stronger the load-bearing and impact resistance. II. Installation and Protection Points Installation Standards: Use a two-end fixed or one-end fixed and one-end supported installation method to ensure the parallelism between the screw and the guide rail is ≤0.02mm/1000mm; avoid misalignment that could cause the screw to bear additional bending moment and accelerate wear. Spatting Prevention and Cooling: Install a slag baffle/protective cover (stainless steel) to cover the screw and nut, preventing direct contact with welding slag; for the screw near the welding torch, a cooling jacket can be installed to control the screw temperature ≤80℃, preventing thermal deformation from affecting accuracy. Electromagnetic Interference Prevention: When connecting the screw to the servo motor, use shielded cables to avoid electromagnetic interference from welding current that could cause servo system jitter. III. Maintenance and Care Standards Regular Lubrication: Check the grease level daily before starting the machine; replenish high-temperature grease weekly; clean the lead screw surface and replace the grease monthly (in dusty/splattered conditions, shorten this to every two weeks). Sealing Inspection: Check the dust cover and scraper ring weekly for damage. If welding slag is present, clean it promptly to prevent seal failure. Accuracy Testing: Check the lead screw's backlash and positioning accuracy monthly. If the backlash > 0.02mm, readjust the preload or replace the lead screw. Emergency Handling: If the lead screw jams, stop the machine immediately, clean the welding slag, and check the nut and lead screw for damage. Forced operation is strictly prohibited.

In the non-standard automation and logistics conveying industry, engineers frequently use the term "C7." As a "perennial" in precision transmission, C7-grade ball screws almost dominate the general conveying and positioning market. But have you ever wondered: Is the precision of C7 sufficient? When is it necessary to upgrade to C5? Today, we'll dissect the "truth about the cost-effectiveness" of C7 screws. I. A "Visualized" Definition of Precision: What exactly is the concept of C7? First, we need to clarify the precision standard of C7. According to ISO and JIS standards, the precision level is mainly determined by the "cumulative lead error within a 300mm stroke": C7 grade: 0.05mm (50 micrometers) C5 grade: 0.018mm (18 micrometers) Visual comparison: 50 micrometers is approximately the diameter of a human hair. For most ordinary packaging machines, palletizers, or conveyor line translation mechanisms, this error is almost negligible compared to the tolerances of mechanical assembly. Therefore, C7 can be considered the "gold standard" for ordinary conveying equipment. II. Why is C7 the "optimal solution" in terms of cost-effectiveness? In engineering design, "good enough" is the highest level of wisdom. The popularity of C7 lead screws stems from their manufacturing process—cold rolling. Cost Advantage: Cold rolling, achieved through die extrusion, boasts extremely high production efficiency, and its price is typically only 1/3 or even lower than that of ground grade (C5 and above). Mechanical Performance: The rolling process is equivalent to cold work hardening of the material; the fibrous structure on the lead screw surface is not severed, resulting in very robust wear resistance in certain heavy-duty conveying scenarios. Delivery Cycle: C7 lead screws typically have a large inventory, supporting rapid cutting and processing, making them ideal for non-standard automated equipment with tight project cycles. III. Caution: C7 May Not Be Sufficient in These Scenarios While C7 offers balanced performance, please choose carefully if your conveying equipment involves the following three characteristics: 1. The "snowball effect" of ultra-long strokes Although the error is only 0.05mm per 300mm, if your conveying stroke is as long as 2 meters or even 3 meters, and there is no secondary positioning at the end, the cumulative error may reach more than 0.3mm. 2. Extreme requirements for "quietness" and "smoothness" Because the surface roughness of cold rolling is not as good as that of ground grade, the vibration and noise of C7 lead screws will be slightly greater during high-speed operation. If used in a laboratory environment or on high-precision testing equipment, it is recommended to upgrade to C5 ground grade. 3. Extremely high-frequency reciprocating motion C7 lead screws are usually paired with clearance nuts or slightly preloaded nuts. If you require extremely high reversing accuracy (backlash approaching zero), the raceway consistency of C7 may not be able to support long-term "zero-backlash" operation, easily leading to localized overheating. Instead of pursuing excessive precision, it is better to focus on dust prevention and lubrication solutions for the lead screw, as well as the parallel installation of the support base. These details have a far greater impact on the lifespan of the equipment than a precision difference of 0.03mm.