In modern manufacturing, CNC machining centers play a vital role in parts processing. However, due to a variety of factors such as material, process and other factors, machining accuracy is often difficult to meet the requirements. Therefore, to improve the machining accuracy of CNC machining centers has become the focus of attention of every manufacturing enterprise. So, how to improve the machining accuracy of CNC machining centers?

1.Optimize programming

　　Programming is the basis of CNC machining centers, which determines the accuracy and efficiency of the machining process. Optimized programming can improve machining accuracy, including the following aspects:

　　1. Select the appropriate cutting path: the cutting path is an important factor affecting machining accuracy, should try to use the shortest path to reduce tool vibration and thermal deformation.

　　2. Determine the appropriate cutting parameters: cutting parameters include cutting speed, feed rate, back draft, etc., should be selected according to the nature of the material, tool type and machine performance and other factors.

　　3. Reasonable allocation of machining allowance: machining allowance is an important factor affecting the machining accuracy, should be reasonable allocation of machining allowance, to avoid errors caused by too large or too small an allowance.

2. The selection of suitable tools

　　Tooling is an important tool for CNC machining centers, the selection of appropriate tooling can improve machining accuracy, including the following aspects:

　　1. According to the nature of the material and processing requirements to choose the right type of tool: for example, for carbide and other high hardness materials, should choose carbide tools; for titanium alloy and other high-strength materials, should choose ceramic tools.

　　2. According to the characteristics of the machine tool and processing requirements to select the appropriate tool size and accuracy: tool size and accuracy will affect the machining accuracy, should be selected to match the machine tool.

　　3. According to the processing conditions to choose the appropriate tool materials and coatings: for example, for high-temperature processing of materials, should choose high-temperature resistant tool materials and coatings.

3. Accurate workpiece positioning

　　Workpiece positioning is a key link in the CNC machining center, accurate workpiece positioning can improve machining accuracy, including the following aspects:

　　1. Using high-precision fixtures and support structures: high-precision fixtures and support structures can ensure the stability and accuracy of the workpiece.

　　2. Adopting high-precision measuring equipment such as laser interferometer for workpiece positioning measurement: these equipment can accurately measure the position and shape of the workpiece and provide accurate data for workpiece positioning.

　　3. Adopt adaptive control technology for workpiece positioning adjustment: adaptive control technology can automatically adjust the position and attitude of the workpiece according to the feedback information in the machining process to improve the machining accuracy.

4. Temperature control

　　Temperature is one of the important factors of CNC machining centers, temperature control can improve machining accuracy, including the following aspects:

　　1. Temperature control of the machine tool itself: the use of chillers, heaters and other equipment to control the temperature of the machine tool to maintain the stability and accuracy of the machine tool.

　　2. Temperature control of the cutting fluid: the cutting fluid will emit heat during the machining process, refrigeration equipment should be used to control the temperature of the cutting fluid to avoid errors caused by temperature changes.

　　3. Temperature control of the workpiece and cutting tool: for example, the use of coolant to cool the tool to avoid errors caused by high temperature.

5. Repetitive machining

　　Repetitive machining is one of the advantages of CNC machining centers, repetitive machining can improve machining accuracy, including the following aspects:

　　1. Using the same programming and cutting parameters: the same programming and cutting parameters can ensure the repeatability of each processing, improve machining accuracy.

　　2. Adopting high-precision control system and servo system: high-precision control system and servo system can ensure the repeatability of each movement and improve the machining accuracy.

　　3. Adopt machine vision and other technologies for workpiece identification and positioning: machine vision and other technologies can automatically identify the position and shape of the workpiece to ensure the repeatability of each machining.

6. Error compensation

　　Error compensation is one of the important technologies of CNC machining center, error compensation can improve machining accuracy, including the following aspects:

　　1. The use of backlash compensation: backlash refers to the machine tool movement axis in reverse motion of the gap that exists, the use of backlash compensation can eliminate the gap on the impact of machining accuracy.

　　2. The use of thermal error compensation: thermal error is due to the machine tool axis of motion in the process of movement generated by the uneven distribution of heat caused by the error, the use of thermal error compensation can eliminate the impact of thermal error on machining accuracy.

 

In conclusion, maintaining and improving the machining precision of CNC lathes is a continuous process that requires regular monitoring, accurate measurement, and timely compensation of factors such as reverse backlash and positioning accuracy. At Bomei Precision Machining, we are committed to leveraging the latest technologies and industry - best practices to ensure that our CNC lathe operations deliver the highest levels of precision, meeting and exceeding the expectations of our customers in various industries. Whether it's precision - engineered components for the automation, automotive, sport or engineering technology industries, our focus on precision machining ensures that every product leaving our facility is of the highest quality.