Industrial machine tool air source pressure requirements

The air source pressure requirements for industrial machine tools vary depending on the machine tool type, processing technology and working environment, but its core standards and influencing factors have clear rules. The following is an analysis from three aspects: pressure range, differences in equipment demand and key influencing factors:

1. Conventional pressure range

The air supply pressure of industrial machine tools is usually set at 0.5~0.8 MPa (5~8 kg force/square centimeter)This range can meet the pneumatic operation needs of most machine tools such as cooling, cleaning, and driving. Specific settings need to combine the following factors:

2. Differences in demand for different machine tool types

1. CNC lathe/machining center
   Pressure requirements are usually 0.6~0.8 MPa, used for tool replacement, workpiece clamping and cooling blowing. Some highly rigid processing scenarios may require pressure increase to 1.0 MPa。
2. pneumatic press
   The clutch air pressure needs to be ≥0.5 MPa, and the balance cylinder air pressure is adjusted according to the weight of the mold, usually ≤0.4 MPa to avoid impact overload.
3. Precision grinding machine/EDM machine
   Need to stabilize low pressure 0.4~0.5 MPaPrevent high-pressure air flow from interfering with processing accuracy.

3. Key influencing factors

1. Processing technology characteristics
   • material hardness: When processing cemented carbide or titanium alloy, you need to increase the air pressure to 0.8~1.0 MPa To enhance cutting force.
   • cooling requirements: Deep hole processing requires high-pressure air flow (≥0.7 MPa) to effectively remove chips.
2. Equipment structure limitations
   • cylinder diameter: Cylinder diameters>50mm require a pressure of ≥0.6 MPa to ensure response speed.
   • pipeline loss: For every 10 meters increase between the air compressor and the machine tool, the pressure needs to be compensated 0.05~0.1 MPa。
3. environmental adaptability
   • Effect of altitude: For every 1000 meters increase in altitude, the air density drops by about 10%, and the output pressure of the air compressor needs to be increased accordingly.
   • temperature fluctuations: High temperature environment (>35℃) needs to be increased 0.1~0.2 MPa To compensate for gas expansion.

4. Industry practice suggestions

1. Selection stage：
   Mark the pressure according to the machine tool manual 1.2 times Select an air compressor. For example, machine tools marked with 0.6 MPa should select an air compressor with an output pressure ≥0.72 MPa.
2. installation and commissioning：
   • using Main pipe above φ25mm + circular branch Layout to reduce pressure losses.
   • Install machine inlet pressure regulating valveAchieve precise control at the end.
3. maintenance strategy：
   • Check the air source pressure gauge every day and find that the deviation exceeds ±0.05 MPa Calibration required.
   • Pipe joints are tested quarterly, and the leakage rate is greater than 5%, and seals need to be replaced.

typical cases: An automobile parts processing factory uses a CNC lathe to process high-strength steel. When the initial air pressure is set to 0.6 MPa, the tool wears too fast. After analysis, after increasing the air pressure to 0.8 MPa, the cutting force increased by 30%, and the tool life was extended to 1.5 times.

conclusion: The air source pressure of industrial machine tools needs to be dynamically adjusted according to process requirements. Through precise selection, optimized pipeline layout and regular maintenance, dual optimization of efficiency and cost can be achieved.