Numerical Control Vehicle Processing Technology Analysis

Engineers primarily integrate computer technology, advanced mechanical technology, and automatic control technology into traditional machine tool processing.

This integration creates new types of CNC turning technology.

Operators primarily process parts by rotating a cylindrical blank according to pre-programmed procedures and part-specific programs.

At the same time, they feed the tool along the axial direction.

The tool cuts the material to produce parts that meet the requirements specified in the part drawings.

CNC turning offers high levels of automation and precision.

Manufacturers widely adopt it in the industry because scientifically sound and high-quality programming significantly enhances production efficiency and quality.

It also reduces labor and time costs and improves both economic and management efficiency.

Advantages of CNC turning processing technology

• High accuracy

Programmers mainly control the specifications of parts produced by CNC turning through programs compiled before processing.

Accurate program settings and stable machine operation ensure that the CNC system produces parts reliably.

This process is not limited by the subjective technical level of manual cutting operations.

The parts have low error rates and high precision.

• High efficiency

Computer programs mainly control CNC turning.

This control allows it to outperform traditional turning by enabling faster part interchangeability and smoother processing procedures.

This approach saves time, eliminates the need for workers to hand over and adjust settings, and results in high processing efficiency.

• High degree of automation

The CNC lathe automatically performs the machining process of parts.

Relevant staff members only need to load and unload equipment or raw materials, replace tools, and monitor the program and equipment operation during the process.

They also conduct supervision and inspections.

Manufacturers continue to update and upgrade CNC machining equipment.

As a result, they constantly raise the corresponding operational technical requirements.

Therefore, staff members responsible for this process need to continuously engage in professional skill learning and training.

• Highly adaptable

A computer numerical control system mainly controls CNC lathes.

Operators can adjust the machining process, part specifications, or parameters by modifying the relevant programming in the CNC system.

Compared to traditional lathe machining, CNC lathe machining is more adaptable and has a wider range of machining capabilities.

Factors Affecting the Precision of CNC Turning Processes and Existing Issues

• Influencing factors

Software foundations and hardware equipment primarily influence the precision of CNC turning processes.

Software foundations refer to the programming level within the CNC system of the lathe that meets the production requirements and processes of the part.

They also include the parameters set according to the design drawings of the part.

Hardware equipment primarily refers to mechanical equipment controlled by the CNC system that meets production precision requirements.

It is important to note that the raw materials used in processing can also have a certain impact on the precision of CNC turning processes.

During CNC turning operations, relevant staff must monitor and promptly inspect all production stages to minimize the adverse effects of unfavorable factors on process precision.

This helps optimize product quality, strengthen quality control capabilities, enhance the company’s market competitiveness, and drive business development.

• Issues

After processing, shaft products have a taper

CNC turning-machined parts are not entirely free of errors.

Previous quality research and analysis of CNC lathe-machined shaft products have shown that many shaft products exhibit a certain degree of taper after machining.

Enterprises must invest a significant amount of time in screening product specifications during the quality control process.

This investment increases production and management costs.

The primary cause of this issue is a slight misalignment of the product spindle position in the CNC lathe.

This misalignment causes parts to be inaccurately positioned for processing.

Secondly, prolonged use of the CNC lathe without timely maintenance causes the guideways to wear, which affects the precision of part processing.

Finally, the chuck in CNC lathes remains under high pressure during prolonged operation.

If operators do not inspect or replace it in a timely manner, its performance will decline.

This decline ultimately causes the finished product quality to deviate from the expected results.

Errors exist in the processing of threaded parts

If operators do not strictly follow the operating procedures when installing threaded parts, they may misalign the cutting tool’s actual installation position from the designed processing position.

This misalignment causes the produced parts to deviate from the actual requirements.

Operators manually assemble and connect certain components of the CNC lathe and its related equipment.

If operators do not assemble and install these components according to relevant specifications, the CNC system’s control sensitivity over the lathe’s related equipment decreases.

This decrease prevents fully leveraging processing programming and ultimately affects the CNC lathe’s precision.

There are significant errors in the cutting tool processing parameters

Tool processing parameters may exhibit significant errors during actual machining operations, which can adversely affect the quality of the final product.

Relevant mechanical equipment requires a certain amount of time to receive and execute instructions issued by the CNC system.

During this time, tool compensation is performed.

Some operators may accidentally press the measurement button after entering compensation values, causing the tool position to shift.

This shift alters the tool parameters and can negatively impact the final product quality.

Additionally, CNC programs have an absolute influence on tool cutting parameters.

If the data for relevant parameters in the program is inaccurate, it affects the overall operation of the CNC machining process.

It also impacts the quality of the finished product.

Strategies for Deeply Optimizing CNC Turning Process Technology

• Analyze part drawings and scientifically plan the machining process

Before performing CNC turning operations, it is essential to conduct a scientific analysis of the corresponding part drawings.

First, it is necessary to verify the accuracy of the part contour design, the precision of the dimensional markings, and the clarity of the drawing.

Second, technicians must analyze the material properties, dimensional tolerances, and surface roughness of the raw material to be machined.

Technicians should select appropriate tools, cutting parameters, and tool feed paths based on the analysis results.

Technicians must analyze the shape and position tolerances in the part drawings.

Based on the analysis results, they determine the corresponding machining benchmarks and clamping methods.

Throughout the entire CNC turning process production, scientific and reasonable planning can enhance process accuracy.

Technicians can align the machining process with real production needs by comprehensively analyzing the entire process and integrating it with actual conditions and production requirements.

This alignment minimizes the risk of producing non-conforming products due to CNC turning processes that fail to meet requirements.

When selecting CNC turning processes, it is essential to conduct a comprehensive analysis and scientific planning.

This ensures choosing the most suitable machining method that aligns with production requirements.

• Standardize work clamping methods

Standardizing workpiece clamping methods helps to standardize the position of the CNC lathe and the movement trajectory of the workpiece.

Operators should strictly follow operational procedures and guidelines when performing clamping tasks, and regularly inspect equipment during operations to ensure proper tightening.

This helps avoid deviations in processed parts caused by loosening of equipment components.

Additionally, when tightening relevant equipment components, operators should consider their structural design and performance to select appropriate tightening methods.

This prevents processing delays and ensures final product quality by avoiding mismatches between tightening methods and equipment components.

• Select the appropriate tool

Some parts require highly precise machining, which in turn demands higher standards for cutting tools.

Therefore, cutting tools used for precision parts should retain their edge sharpness and rigidity.

Typically, cutting tools are made from high-strength aluminum alloy of the 2A12 grade, which offers superior performance.

Technicians should set the cutting edge length at an angle of 90° to 93° and adjust the front and rear angles as needed based on specific operational requirements.

It is important to avoid having the tool’s finishing edge be too long, with a finishing edge length of less than 0.3 mm being optimal.

When selecting tools, it is necessary to thoroughly evaluate objective factors such as material, rigidity, and wear resistance.

It is also important to consider whether the tool can fully utilize its cutting performance under various environmental and production requirements.

Technicians should determine the appropriate tool after comprehensive evaluation and comparison.

• Improve the processing route

Select the optimal processing route

When selecting a CNC turning processing route, it is necessary to compare the design schemes of the corresponding routes.

Then, select the route with the simplest numerical calculation, the shortest processing path, and the most accurate positioning.

This reduces idle time and the workload of CNC program programming, saves time costs, and improves the processing efficiency of CNC turning parts.

Clear and detailed route

The point-to-point control system for CNC turning focuses primarily on positioning accuracy, so the cutting path should meet the requirement of the shortest idle travel.

Technicians should pay close attention to the axial track distance of the tool while defining the detailed machining path.

This distance is primarily influenced by the depth of the part’s hole.

Contour machining route

Operators should set the tool’s entry and exit points along the extended lines of the part’s curves when performing turning operations on external contours.

This minimizes the risk of scratches on the part’s surface and ensures smooth external contours.

When performing turning operations on the internal contours of parts, the normal line of the part’s contour should be used as the basis for setting the tool’s entry and exit points.

Operators should ensure the turning operations on the part’s contour are completed as smoothly as possible to avoid component imbalance caused by pauses.

• Strictly control CNC system programming and related processing parameters

Strict control of CNC system programming

The core of CNC turning lies in the control of the machining lathe by the CNC system, and the core of the CNC system lies in the programming of the computer system.

To ensure the advantages of CNC lathes and the quality of machined products, relevant personnel must strictly control the programming of the CNC lathe control system.

They must also standardize the tool’s operating path and ensure that product specifications meet requirements.

Technicians must thoroughly analyze the product before programming to clarify the requirements of the part design drawings and ensure the system programming is scientific and reasonable.

Technicians should actively utilize advanced information technology to simulate tool feed paths, select the optimal path, and incorporate it into the program.

Programmers must incorporate the characteristics of the processing material, tool performance, and specific processing requirements into the programs.

This allows them to design a suitable operating scheme, optimize processing accuracy, and enhance product quality.

Strict control of processing parameters

In the practical application of CNC turning processes, clearly defining cutting parameters is critical to ensuring the quality of the finished product.

Cases where improper or incorrect setting of cutting parameters leads to CNC machining errors, thereby affecting the final product quality, are not uncommon.

Relevant operators primarily cause such issues by failing to set optimal cutting parameters according to established standards and processing methods.

They also overlook actual conditions like tool feed rates.

Therefore, operators must master the correct setting of cutting parameters during actual CNC turning production, including spindle speed, tool feed rate, and depth of cut.

• Optimizing the overall design process for CNC turning

In the design of CNC turning processes, the principle of rigidity must be strictly adhered to.

This ensures that stress deformation during CNC turning is uniformly distributed to the stress transmission points.

As a result, it prevents the formation of parts with poor rigidity and avoids deformation of the local structure of the CNC lathe.

When designing the layout of the CNC lathe, appropriately lowering its structural center of gravity can enhance the vibration modal frequency.

This improvement helps increase processing accuracy.

While ensuring that the CNC lathe structure meets rigidity requirements, the use of upper-layer structural materials can be appropriately optimized.

This optimization lowers the CNC lathe’s center of gravity without affecting its functionality.

• Timely repair and maintenance of equipment

During the CNC lathe production process, wear and tear on equipment is inevitable.

If timely maintenance and inspections are not conducted, equipment malfunctions may occur during operation.

These malfunctions can affect production quality, cause part errors, and, in severe cases, even result in equipment scrappage.

In addition to daily production operations, relevant operators must pay attention to the operational status of the equipment during CNC lathe processing.

They should identify issues and report them promptly.

Manufacturing companies should intensify equipment maintenance and inspection efforts, conducting pre-operation checks and adjustments on relevant equipment.

Any identified issues should be addressed promptly.

During equipment operation, it is necessary to collect feedback from employees.

Then, conduct comprehensive analysis and evaluation of the relevant information to assess whether the equipment’s operational status meets production requirements.

After the CNC turning machine ceases operation, operators should promptly clean the surface of dust and debris.

They should also replace or repair worn or abnormal components, apply lubricating oil to relevant parts, and clear blocked oil lines to ensure the equipment remains in optimal operational condition at all times.

• Upgrade and optimize the servo control system

In CNC servo control program programming, it is advisable to use fully closed-loop control mode as much as possible.

Minimizing the use of semi-closed-loop or open-loop control modes helps further enhance the machining accuracy of CNC turning processes.

For the worktable of a CNC lathe, appropriately adding sensor components can help monitor the operational status of related equipment in real time.

Additionally, it can monitor displacement parameters that occur during part processing.

By comparing the monitored values with pre-set values, operators can take effective corrective measures.

These measures optimize the control precision of the CNC lathe’s computer system and improve the quality of processed parts.

Conclusion

As the manufacturing industry continues to develop, people’s demands for product quality are becoming increasingly stringent.

We can elevate the overall production capabilities of the manufacturing sector by deeply optimizing and continuously exploring more advanced processing and production technologies.

We also enhance the technical standards of CNC turning processes.

This also contributes to the healthy and orderly development of the market economy.