Precision CNC Machined, High-Strength DT4 Titanium Alloy Components
Core Definition
This process describes a precision processing solution for specific components in the medical industry. The object is a shaft sleeve part made of DT4 pure titanium with an external dimension of Φ25×65mm, which needs to be fully processed on a CNC lathe and a CNC machining center. The core lies in achieving strict form and position tolerances (0.02-0.04mm) and ultra-precise surface roughness of the end face (Ra0.2), which falls within the typical category of high-precision and high-surface-quality medical device manufacturing.
ManufacturingObjects
This component is a key load-bearing or connecting part in medical equipment or implantable devices, and is typically used in imaging equipment, surgical instruments or orthopedic guiding devices. DT4 industrial pure titanium was selected due to its excellent biocompatibility, corrosion resistance and moderate strength. However, its poor thermal conductivity and tendency to stick to tools pose special challenges to the processing technology. During assembly, parts must ensure extremely high fit stability and motion accuracy. Therefore, the form and position tolerances and surface finish are directly related to the reliability and service life of the equipment.
Core features and requirements
The core feature of processing is the equal emphasis on "precision" and "surface integrity". The positional tolerance of 0.02-0.04mm covers coaxiality, cylindricity, end face runout, etc., and is required to be completed in one clamping or high-precision reference conversion. The surface finish of Ra0.2 on the end face should avoid any microscopic vibration marks or material tearing. In addition, the medical industry has mandatory requirements for the cleanliness and contamination of parts. The processing must strictly prevent contamination by foreign materials such as copper and lead, and control burrs and microscopic residual stresses.
Key processes and technologies
To achieve the goal, the process chain requires multi-stage collaboration:
Clamping and reference strategy: Use precision hydraulic fixtures or heat shrink tool holders, combined with the one-time forming capability of the turning and milling compound center, to reduce repeated positioning errors. After rough machining, stress relief heat treatment is required to stabilize the internal structure of the material.
Tools and cutting parameters: Select extremely fine-grained cemented carbide or PCD tools, and optimize the rake Angle to reduce titanium alloy adhesion. A fine cutting mode with high speed, small depth of cut and micro-feed is adopted, supplemented by high-pressure directional coolant (such as liquid nitrogen or special water-based coolant) to control the cutting heat.
Superfinishing technology: The end face Ra0.2 needs to be achieved through the "turning instead of grinding" process, that is, using diamond tools for mirror turning, combined with the axial accuracy compensation function of the machine tool spindle. After fine processing, ultrasonic cleaning and passivation treatment under argon protection are required to ensure the surface is pure.
Full-process monitoring: The online measurement system provides real-time feedback on key dimensions, the three-coordinate measuring instrument ultimately conducts full inspection of form and position tolerances, and the white light interferometer is used for quantitative verification of surface roughness.
Conclusion
In conclusion, the processing of this medical component is a high integration of material properties, machine tool performance and process technology. Through the flexible manufacturing of turning and milling compound machining centers, special cutting solutions for titanium alloys, and ultra-precision surface generation technology, the unification of micron-level geometric accuracy and sub-micron-level surface quality has been achieved under the strict control of pollution. This process paradigm not only ensures the service performance of medical components but also reflects the core value of high-end manufacturing in the field of life sciences.
Precision CNC Machined, High-Strength DT4 Titanium Alloy Components
Core Definition
This process describes a precision processing solution for specific components in the medical industry. The object is a shaft sleeve part made of DT4 pure titanium with an external dimension of Φ25×65mm, which needs to be fully processed on a CNC lathe and a CNC machining center. The core lies in achieving strict form and position tolerances (0.02-0.04mm) and ultra-precise surface roughness of the end face (Ra0.2), which falls within the typical category of high-precision and high-surface-quality medical device manufacturing.
ManufacturingObjects
This component is a key load-bearing or connecting part in medical equipment or implantable devices, and is typically used in imaging equipment, surgical instruments or orthopedic guiding devices. DT4 industrial pure titanium was selected due to its excellent biocompatibility, corrosion resistance and moderate strength. However, its poor thermal conductivity and tendency to stick to tools pose special challenges to the processing technology. During assembly, parts must ensure extremely high fit stability and motion accuracy. Therefore, the form and position tolerances and surface finish are directly related to the reliability and service life of the equipment.
Core features and requirements
The core feature of processing is the equal emphasis on "precision" and "surface integrity". The positional tolerance of 0.02-0.04mm covers coaxiality, cylindricity, end face runout, etc., and is required to be completed in one clamping or high-precision reference conversion. The surface finish of Ra0.2 on the end face should avoid any microscopic vibration marks or material tearing. In addition, the medical industry has mandatory requirements for the cleanliness and contamination of parts. The processing must strictly prevent contamination by foreign materials such as copper and lead, and control burrs and microscopic residual stresses.
Key processes and technologies
To achieve the goal, the process chain requires multi-stage collaboration:
Clamping and reference strategy: Use precision hydraulic fixtures or heat shrink tool holders, combined with the one-time forming capability of the turning and milling compound center, to reduce repeated positioning errors. After rough machining, stress relief heat treatment is required to stabilize the internal structure of the material.
Tools and cutting parameters: Select extremely fine-grained cemented carbide or PCD tools, and optimize the rake Angle to reduce titanium alloy adhesion. A fine cutting mode with high speed, small depth of cut and micro-feed is adopted, supplemented by high-pressure directional coolant (such as liquid nitrogen or special water-based coolant) to control the cutting heat.
Superfinishing technology: The end face Ra0.2 needs to be achieved through the "turning instead of grinding" process, that is, using diamond tools for mirror turning, combined with the axial accuracy compensation function of the machine tool spindle. After fine processing, ultrasonic cleaning and passivation treatment under argon protection are required to ensure the surface is pure.
Full-process monitoring: The online measurement system provides real-time feedback on key dimensions, the three-coordinate measuring instrument ultimately conducts full inspection of form and position tolerances, and the white light interferometer is used for quantitative verification of surface roughness.
Conclusion
In conclusion, the processing of this medical component is a high integration of material properties, machine tool performance and process technology. Through the flexible manufacturing of turning and milling compound machining centers, special cutting solutions for titanium alloys, and ultra-precision surface generation technology, the unification of micron-level geometric accuracy and sub-micron-level surface quality has been achieved under the strict control of pollution. This process paradigm not only ensures the service performance of medical components but also reflects the core value of high-end manufacturing in the field of life sciences.
