CNC Prototype Machining: How to Improve the Quality of CNC Prototype Machining Parts?

In the process of CNC prototype machining parts proofing, the needs of many customers require the prototype model to have high quality, and the machining accuracy directly affects the quality of CNC prototype machining parts. Let's discuss the matters needing attention in each process in order to achieve the goal of improving the quality of CNC prototype machining parts.

Choose the right CNC machining tool

1. The rational use and selection of tools will be an important factor affecting the quality of CNC machining. In high-speed machining, coated cemented carbide will replace most of the sharp steel tools, including simple tools such as reamers, ball nose tools, and boring tools, and will be applied to most of the conventional CNC machining fields.

2. Usually, in rough machining, we will use large-diameter tools for CNC machining. In order to save costs and reduce the difficulty of tool manufacturing, we will use machine-clamped carbide inserts to make rough machining chip removal as much as possible.

3. In semi-finishing, high-speed and high-feed insert cutters are used to make the semi-finishing process quicker; in finishing, try to use high-precision round-head mirror inserts and carbide toolholders to ensure that the tool and toolholders are This will save the expensive cost of selecting integral alloy tools while maintaining the machining accuracy of CNC prototype machining parts.

4. In the CNC prototype machining, we also need to pay attention to the inner contour fillet radius on the finishing parts must be greater than or equal to the radius of the tool, and the tool with a radius smaller than the corner radius at the corner is selected by circular interpolation or oblique line interpolation. The CNC machining is carried out in the way of compensation, which can avoid the overcut phenomenon caused by linear interpolation and ensure the quality of mold finishing.

Design a reasonable process plan for CNC prototype machining parts

1. In high-speed and high-precision machining, the importance of CNC process design has been raised to a higher position. The whole process of CNC machining must be controlled. Any mistakes will have a serious impact on the quality of the mold, so the process plan will have a significant impact on the quality of the mold. The quality of CNC prototype machining parts plays a decisive role. The CNC machining process design can be considered to be controlled by the state of a systematic process plan from the blank to the part machining.

2. A reasonable process plan is difficult in the entire design process, and it can only be obtained after continuous practice summarization and modification. In the design process, there is a large amount of information to be considered, and the relationship between the information is extremely complicated. The actual work experience of the programmer is guaranteed. Therefore, the design quality of the process plan mainly depends on the experience and level of the technicians.

Scientific management and maintenance

The positioning accuracy of CNC machine tools is an important accuracy that is different from ordinary machine tools. It has an important impact on the cutting accuracy of the machine tool together with the geometric accuracy of the machine tool, especially the hole spacing error in pore machining. A CNC machine tool can judge its machining accuracy from the positioning accuracy it can achieve, so the detection and compensation of the positioning accuracy of the CNC machine tool is a necessary way to ensure the machining quality. In addition, the reverse deviation will increase with the gradual increase of the clearance of the kinematic pair caused by wear, so it is necessary to periodically measure and compensate the reverse deviation of each coordinate axis of the machine tool.

The use of advanced CNC prototype machining equipment

In CNC machining, the machining accuracy of the mold is related to the equipment, and the more advanced machining equipment can achieve, the higher the machining accuracy is. So choosing more advanced CNC prototyping equipment is the most straightforward way. In order to meet the needs of customers for higher CNC machining accuracy, the prototype model of the prototype can be replaced with more advanced CNC prototype machining equipment, and the highest accuracy of 0.02mm can be achieved on the hardware.

To improve the quality of CNC prototyping parts, each of the above suggestions can be done to achieve the best quality of CNC prototyping parts and meet the needs of customers, which is the goal that every CNC prototyping parts factory needs to achieve. The quality of CNC prototyping is directly related to CNC machining accuracy, but not only depends on CNC machining accuracy, but also on many other factors.

VMT is mainly engaged in customized precision CNC machining parts, metal and plastic prototype processing, and its business covers 62 countries around the world, covering military, medical, semiconductor, automotive and other fields. 40+ materials and 15+ surface finish options with free service design, project reviews and DFM analysis. To ensure the quality of parts, we passed the ISO9001 quality system and SGS on-site factory audit in 2015. No matter how complex your part structure is, or your product encounters technical problems, we can provide you with professional service! Save 15% of time cost and communication cost for you!

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