Industry Information

Understanding: What are the factors that need to be updated in the processing of automotive parts?

The main difficulties in processing medical parts and accessories are as follows
1、 Difficult to machine titanium alloy materials
90% of medical parts and accessories are supported by Ti6AI-4V titanium alloy, which is lightweight, high-strength, and highly biocompatible. Titanium alloy 6Al-4V has become the most commonly used material for medical implant devices.
Titanium alloy has the characteristic of work hardening; During the machining process, the cutting force is relatively large, resulting in thin chips and forming relatively small contact areas on the tool; In addition, the high cutting force during the machining process, combined with the frictional force during chip flow, will comprehensively lead to excessive local cutting heat of the tool. However, titanium alloy has poor thermal conductivity, which prevents cutting heat from being quickly transmitted.
2、 Reliable and compact machine tool fixtures
Medical parts and accessories equipment need to be able to process small and complex parts made of difficult to process materials with high precision requirements, such as replacing parts for processing bones and joints, which are quite complex; Due to the poor cutting performance of the processed material, the blank is usually made of bar material – which means a large amount of metal needs to be removed.
Medical parts and accessories require high requirements for workpiece materials, processing accuracy, and surface smoothness, which requires high reliability of the processing system; Thus, there are extremely high requirements for machine tools, fixtures, cutting tools, CAM software, etc.
3、 Stable and efficient cutting tools
1. The requirements for machine tools are relatively high; Advanced medical device processing equipment such as Swiss automatic lathes, multi spindle machine tools, and rotary workbenches are completely different from commonly seen machining centers and lathes, with very small dimensions and compact structures; To meet this requirement, the structure of the cutting tool also needs to have a special design, requiring the size of the cutting tool to be very small, while also ensuring the rigidity of the cutting tool.
2. High requirements for processing efficiency; For medical devices, the most important thing is processing efficiency, which means the processing pace. It is required to be able to replace the blades in the shortest possible time.
3. From the perspective of the workpiece itself, there are significant differences from other mechanical components; The first requirement for medical devices implanted into the human body is to have excellent smoothness, high accuracy, and no deviation. This requires the design of the blade structure and blade coating to meet high processing requirements.