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Professional processing methods for five-axis branded products
Release date:
2021-08-13
Professional machining of five-axis branded products can be categorized into point-contact, surface-contact, and line-contact types. Among these, the point-contact method is particularly widespread. It refers to a machining process that relies on point contact for shaping—for example, spherical grinding with wheel dressing or spherical finishing using cutting tools. The key feature of this point-contact approach is its spherical geometry, where the surface normal vector points uniformly throughout three-dimensional space.
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The processing methods for professional five-axis branded products can be categorized into point-contact, surface-contact, and line-contact types. Among these, the point-contact method is widely used. It refers to a machining approach where the tool makes contact at a single point during the process—for example, spherical grinding with a ball-end mill or spherical finishing using a ball-nose cutter.
A key feature of this point-contact method is that the spherical surface normal vector points uniformly in all directions in space, allowing the tool to adapt effectively to curved surfaces during machining. Compared to surface-contact and line-contact methods, point-contact machining is simpler to program and requires less computational effort. Additionally, as long as the tool radius is smaller than the curvature radius of the workpiece surface, interference can be easily avoided.
While the point-contact method excels in its versatility, enabling it to handle any type of curved surface, it has a significant drawback: the cutting speed at the point of contact approaches zero, leading to poorer cutting conditions. As a result, both machining efficiency and precision are relatively low.
Next, let’s delve into how the surface-contact and line-contact methods are implemented in the processing of professional five-axis branded products.
So-called surface-contact machining refers to a professional five-axis process that uses surface contact for shaping, such as end-face grinding. This method boasts higher cutting speeds and relatively large feed rates, making it highly efficient while maintaining good precision. However, its effectiveness can often be influenced by the specific shaping technique and the exact geometry of the cutting tool. As a result, it’s commonly employed for machining moderately convex surfaces—particularly those with flatter, less complex curvatures. Meanwhile, line-contact machining is an area of ongoing research; this approach involves using linear contact during the machining process, techniques like conical or cylindrical grinding, or even abrasive belt finishing.
This machining method is characterized by: higher cutting speeds at the tool-workpiece interface, which enables superior machining accuracy. Additionally, since it relies on line-contact forming, it delivers enhanced processing efficiency—and has now evolved to include research on line-contact machining of arbitrary curved surfaces.
The use of 5-axis linkage machine tools among professional five-axis brands makes workpiece clamping significantly easier. During machining, there’s no need for specialized fixtures, which reduces fixture costs and eliminates the hassle of multiple setups, ultimately enhancing mold-making precision. Adopting 5-axis technology for mold production also allows manufacturers to minimize the number of fixtures required. Additionally, since 5-axis machines eliminate the need for many specialized cutting tools during the process, tooling costs are further lowered. By leveraging 5-axis linkage machine tools, mold manufacturing can be completed swiftly, ensuring faster delivery times while maintaining superior mold-quality standards. This approach not only simplifies the entire mold-making process but also makes it far more convenient to modify molds as needed.
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