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Which operations are not included in CNC machining centers？
What operations are not included in CNC machining centers?
Introduction:
CNC machining centers have revolutionized the manufacturing industry, offering precise and efficient methods of producing complex components. These machines are capable of performing a wide array of operations with the help of computer numerical control. However, there are certain operations that cannot be carried out by CNC machining centers. In this article, we will explore those operations in detail, highlighting the limitations of these advanced machines. Let's dive deeper into the world of CNC machining centers and understand the tasks they cannot accomplish.
1. Welding
Welding is a common metal fabrication technique used to join two or more pieces of metal together. Although CNC machining centers are widely praised for their versatility, welding is a process that cannot be performed by these machines. The primary reason for this limitation is the absence of the necessary equipment and mechanisms required for welding operations. Welding involves the fusion of metals, which requires intense heat and the presence of filler material. Similarly, other welding techniques such as TIG (Tungsten Inert Gas) welding, MIG (Metal Inert Gas) welding, and arc welding are also not feasible with CNC machining centers. Therefore, manufacturers still rely on skilled welders to perform welding operations separately.
2. Heat Treatment
Heat treatment is an essential process in the manufacturing industry that involves altering the properties of materials, particularly metals, through heating and cooling. This process can enhance the material's hardness, toughness, and strength, making it suitable for various applications. However, CNC machining centers are not equipped to handle heat treatment processes. The controlled heating and cooling required for heat treatment require specialized equipment such as furnaces, ovens, or induction heaters. These machines are specially designed to provide the precise temperature and environment necessary for heat treatment processes. As a result, heat treatment is typically performed in separate facilities.
3. Finishing Operations
While CNC machining centers are highly proficient in shaping raw materials into desired shapes, they do not excel at providing the final finishing touches to a product. Finishing operations, such as painting, sandblasting, and polishing, are often necessary to enhance the appearance, durability, and corrosion resistance of a component. These operations require specialized equipment and techniques that are distinct from CNC machining. Therefore, finishing is usually carried out as a secondary process after the machining center has completed its primary tasks. Skilled technicians and painters are employed to perform these finishing operations that further refine the product's aesthetic and functional qualities.
4. Assembly
Assembly refers to the process of putting together multiple components to create a finished product. Although the CNC machining center can produce individual parts with incredible accuracy, it is not designed for the assembly of these parts. Assembly usually involves intricate positioning, connecting, and fastening of parts using adhesives, screws, or other methods. This process requires manual dexterity, attention to detail, and an understanding of the product's design. As a result, skilled technicians commonly carry out the assembly of components, either by hand or using specialized assembly equipment. The use of automated assembly lines may have some degree of overlap with CNC machining centers, but it is ultimately a separate operation.
5. Quality Control and Inspection
Quality control and inspection are crucial stages in the manufacturing process to ensure that the final product meets the required specifications. While CNC machining centers can produce components with high precision, they are not capable of performing quality control and inspection tasks. These processes involve measuring and verifying dimensional accuracy, surface finish, material integrity, and other important factors. Dedicated inspection equipment such as coordinate measuring machines (CMMs), optical scanners, and other specialized tools are used to assess the quality of the finished components. Skilled quality control inspectors play a vital role in identifying any deviations from the desired standards and ensuring that the end product meets the specified requirements.
Conclusion:
CNC machining centers are undoubtedly remarkable machines that have transformed the manufacturing industry. They can carry out a wide range of operations with remarkable precision and efficiency. However, it is important to acknowledge their limitations. Operations such as welding, heat treatment, finishing, assembly, and quality control are crucial elements of the manufacturing process that still require manual intervention and specialized equipment. By understanding these limitations, manufacturers can effectively plan and allocate resources to optimize the production process and deliver high-quality products to their customers.
In summary, while CNC machining centers excel in machining raw materials into precise components, there are various operations that fall outside their capabilities. Welding, heat treatment, finishing, assembly, and quality control are among the operations that still demand the expertise of skilled technicians and specialized equipment. By recognizing these limitations, manufacturers can ensure they have a comprehensive understanding of the tasks that must be carried out separately from the CNC machining process. This knowledge enables efficient planning and ensures the production of superior quality products.
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I. Functional role
Slideways are the “track” between the guide rail and the moving parts. They convert the rotary (or linear) thrust of the servo motor into precise linear motion of the machine table, spindle box or turret, while withstanding cutting reaction forces, shocks and vibrations. Once the slideway fails, the positioning accuracy and surface quality of the whole machine will drop directly.
II. Common structure family
Linear ball slideway
Steel balls are in point contact with the raceway, low friction and fast response, suitable for high-speed and light-load Swiss-type lathes or vertical machining centers.
Linear roller slideway
Cylindrical rollers are in line contact with the raceway, high rigidity and large load capacity, the first choice for heavy-cutting equipment such as turn-mill centers and gantry five-face machines.
Dovetail slideway
Triangular interlocking surface, extremely strong lateral force resistance, often used in grinders or ultra-precision machining units that require micro-feed.
Hydrostatic/hydraulic slideway
Oil film supports moving parts, almost zero wear, used for mirror grinding or heavy-duty boring machines, but demanding on the oil supply system.
On September 3, 2025, China solemnly commemorated the victory in the War of Resistance Against Japanese Aggression and the World Anti-Fascist War. Behind the pageantry that displayed national strength and a commitment to peace, countless Chinese manufacturers are injecting their craftsmanship and cooperative spirit into the global economy. JSWAY CNC COMPANY is one of them, answering the call for peace and development in its own way.
For two decades JSWAY has focused on high-configuration, high-precision, high-speed CNC lathes and Swiss-type lathes. Products now reach more than thirty countries and regions, illustrating the principle of “peace through development, excellence through quality.”
True high-end manufacturing is not only technological breakthrough but also stability of quality. JSWAY’s plant houses about forty thousand square metres of floor space, producing Swiss-type lathes, turn-mill centres, gang-tool lathes and turret lathes. Critical components are machined on horizontal machining centres, gantry-type five-face machining centres and precision grinders, ensuring consistent accuracy.
An engineering data centre and joint laboratory use laser interferometers, eddy-current displacement testers, wireless rotary axis calibrators, high-precision digital temperature sensors and real-time machine-error compensation systems to upgrade products continuously.
Equipment is the foundation, quality is the lifeline
After hours of cleaning, the workshop sparkles: machines gleam, floors are spotless, tools are neatly arranged. This special deep-clean has swept away more than dust; it has set new standards and united everyone’s focus.
The blitz is not the end, but the beginning. JSWAY CNC is drafting new equipment-maintenance standards and will introduce a 7S management system—Sort, Set in order, Shine, Standardize, Sustain, Safety, Save—to elevate on-site management across the board.
At JSWAY CNC, equipment maintenance has transcended routine care to become an expression of culture and values. With reverence for equipment comes micron-level precision; with meticulous cleanliness comes competitive strength.
Hardware: every JTMX turn-mill center offers a high-resolution rotary axis and built-in polar interpolation.
Software: JS-CAM generates polar tool paths automatically and flags potential collisions; cloud post-processors support major control brands.
Service: every machine purchase includes hands-on polar programming training and lifetime remote support.
In short, polar coordinates turn rotational surfaces into a brief dialogue of radius and angle, letting turn-mill centers achieve complex shapes with shorter programs and fewer tool changes. Choose JSWAY CNC COMPANY and turn polar formulas into ready-to-use productivity.
Ball guideways use point contact between steel balls and raceways, delivering low friction and rapid response—ideal for light to medium loads at high speeds. Roller guideways rely on line contact between cylindrical rollers and raceways, significantly boosting load capacity and rigidity—perfect for heavy cutting or long-travel applications. In short: choose ball for speed and energy savings, choose roller for load and precision.
JSWAY turns both options into plug-and-play modules. Light-duty Swiss-type lathes and gang-tool lathes leave the factory with ball guideways for balanced cycle time and cost; heavy-duty turn-mill centers are upgraded to roller guideways to maintain micron accuracy under heavy cuts. Even better, the same slide can later be switched between ball and roller with a simple component swap—no downtime, no waste.
Tell JSWAY your workpiece weight and cycle-time targets, and we’ll provide free load calculations and guideway recommendations, letting “fast” and “strong” coexist on a single machine. Choose JSWAY for a solution you select once and trust for years.
A slant-bed—also called an inclined-bed or angled guideway—positions the machine ways at an angle to the horizontal. Instead of sliding flat, the carriage moves downward along the slope, using gravity to evacuate chips and lowering the machine’s center of gravity. This design gives Swiss-type lathes extra room for frequent tool changes and long-bar machining.
JSWAY slant-bed Swiss lathe highlights
• Factory-fitted pre-tensioned ball screws and large-diameter angular-contact bearings deliver micron-level positioning accuracy.
• Standard hollow hydraulic chuck and auto-bar-feed interface allow one-setup, non-stop machining of long bars.
• Optional JS-Edge temperature and vibration sensors stream data to the cloud; AI algorithms give early warnings.
• “Slant-bed retrofit kit” lets you convert existing flat-bed machines to JSWAY slant-bed modules, avoiding full-machine replacement costs.
One-sentence promise
Turn gravity into productivity—choose JSWAY slant-bed Swiss lathes and turn every long bar into higher profit.