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How to improve the efficiency of Precision CNC Machined Parts?

Dec. 09, 2019

Everyone knows that during CNC processing, dynamic processing technology can be used to improve processing efficiency. So in the more time-consuming the finishing process is there any way to improve the efficiency of Precision CNC Machined Parts?

    Precision CNC Machined Parts

Precision CNC Machined Parts

The purpose of finishing is to ensure the final dimensional accuracy and surface quality of the workpiece. To improve the efficiency of finishing, we need to consider both the quality of the finished surface and the finishing time. As a Precision Machined Components Manufacturers, let's first analyze the surface quality of the finishing process, which depends largely on the height of the residual ridges left after processing.

What is the residual ridge height?

The height of the residual ridge refers to the maximum height of the raised a portion of the residual material after the tool passes through two adjacent tool paths during processing.

How to reduce residual ridge height?

One feasible method is to reduce the step over and reduce the distance between adjacent tool paths. But this means increasing the number and density of tool passes per unit area and increasing the time for finishing. Therefore, in 3D surface finishing, everyone will feel that there is a dilemma between "surface quality" and "machining time".

Better surface quality = longer processing time.

Another possible method is to use larger tools. Because of the larger the tool radius, the greater the arc at the contact point when in contact with the material. At the same toolpath density, the height of the residual ridge obtained is about small.

Two tools of different sizes, using the same step distance, the height of the residual ridges are compared.

Use a larger arc tool to reduce the residual ridge height.

Use a large radius tool or a small radius tool?

Using a large radius tool can reduce the residual ridge height and achieve better surface quality. However, new problems have emerged: many workpieces need to be machined where the clearance is narrow and cannot be machined with large radius tools.

Is there a way to integrate the advantages of both and avoid the disadvantages of both?

A careful analysis of the formation process of the height of the residual ridge can be found that the height of the residual ridge is actually related to the radius of the arc of the contact point of the tool and the material, and has little to do with the radius of the tool itself. If you only increase the radius of the radian of the effective machining part of the tool and keep the size of the tool body radius unchanged, it may be possible to achieve the two goals of improving surface quality and shortening the finishing time.

In fact, tool manufacturers have started research in this area, and have launched a variety of large-radius arc tools suitable for different processing scenarios.

Can I start machining with the tool?

As mentioned earlier, changing the shape of the tool, increasing the arc of the contact point between the tool and the material during processing, and reducing the height of the residual ridge left by the finishing process, can greatly reduce the number and density of tool paths in the finishing area. Greatly reduced processing time and improved production efficiency.

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