购买立式膝铣刀前需要考虑的 9 件事

膝磨机是专为制造高端部件而设计的精密机床。购买这样的机器需要仔细考虑许多问题，包括购买哪种膝磨机，以及要寻找哪些零件和服务支持。

膝磨机如何工作？

膝式铣床是一种立式铣床，用于执行各种铣削工艺，例如切割、堆焊、开槽和钻孔。通常被称为立式膝铣刀，工件被夹在安装在膝关节上的工作台上，该工作台沿 X 轴和 Y 轴水平移动。套筒允许切削工具实现一定范围的 Z 轴运动。高转速铣刀旋转以对工件进行精确切割。

立式膝铣刀提供范围广泛的切割运动，能够在从个体拥有的机械车间到大型制造企业的各种机械车间工作。 CNC 膝铣刀不太常见，但提供了强大的控制系统并吸引了各种经验水平。

购买膝磨机时应该考虑什么？

费用

立式膝磨机本身通常是一笔巨大的投资。无论您是购买新机器还是二手机器，您都需要考虑其他成本。例如：

交通： 移动设备会产生运输费用。在购买立式膝磨机之前仔细考虑您的业务需求和增长是个好主意。运输整合和仓储服务等明智的采购决策有助于降低昂贵的差旅成本。

替换零件： 由于立式膝磨机经常在高速下长时间使用，因此磨损是该过程的一部分。

插件： 如果您购买的机器是裸机，则可能需要根据您要制造的产品安装一些附件。考虑配件和分期付款。

大小

如果空间对您来说是一个问题，并且您打算使用硬度较低的材料，那么购买占地面积紧凑的立式膝铣刀将适合较小的工作空间和机械车间。它也将更容易运输，最终节省额外成本。

Compact machines today offer a much smaller footprint with a great deal of accuracy and quality finish depending on the material you’re working with. It is important to think about your requirements from the machine in terms of what you plan to produce. Large size machines tend to offer more stability especially when machining hard materials such as steel. Better stability means the machine will not flex too much when applying the force required for the part. Using a smaller machine for complex materials can result in vibrations that reduce the accuracy and achievable tolerances.

Production volume

A commercial quality mill is often enough for low to medium production volume. Industrial-grade vertical knee mills are a better choice for mass production that involves hours of continuous complex machining.

Speed

A higher spindle speed adds cost and may not always deliver the best accuracy. Research and determine what the required speed range is for the parts you will machine and look for those speeds when shortlisting your options.

Tolerances

If you’re new to machining, you need to know about machine tolerances. Machine tolerance indicates the level of precision required to produce a part. A smaller or “tight” tolerance means you need more precision. On the other hand, a larger or “loose” tolerance signifies a lower precision requirement. Machines with tight tolerances are also more expensive because of the wear that occurs when a tool produces multiple versions of the same part. Understanding precision and tolerances will also give you more insight to the longevity of different machines.

Tooling and workpieces

When purchasing your vertical knee mill, make sure that the configuration and cost reflect all the tools and workpieces that you require such as vice, drill chucks, and more.

Materials

What materials are you machining on your vertical knee mill? Each material has its own unique characteristics, and therefore a different level of achievable tolerance. Hardness, abrasiveness, and heat stability are some of the characteristics that come with materials. Your choice of a knee mill should consider a machine that suits the materials you plan to work with.

Programming and control

For new machinists, the best choice is a vertical knee mill that offers easy-to-use controls. Conversational programming is a great start as it allows easy operation when generating programs on the machine’s control. Built-in data prompts guide operators who can select the right dynamics for the machine process.

A great example is the Smartcut EVS CNC Vertical Mill from Summit which features a Fagor 8055i MC control system with a powerful ISO G-code control and Icon programming. Complex machining tasks are easy to program with highly interactive graphics, making it a great fit for operators of any experience level!

Service and Support

When deciding on the right vertical knee mill machine, it’s important to consider the support you need to ensure sufficient maintenance. Just like any other machine, a vertical knee mill requires cleaning and regular maintenance for quality control. Here are some things to consider:

• Do you have access to quick service?
• Are there any technical service centers near your location?
• How much will you have to pay for repairs and spare parts?

Purchasing a knee mill from Summit Machine Tool ensures that your knee mill arrives fully assembled, fully calibrated, and with clear instructions for use. Additionally, our service department is here to help, so contact us if you run into any questions. Our speedy parts and service department ensures that spares are sent out as quickly as possible.

Conclusion

Before buying a knee mill, be sure to prepare and research. Your budget should reflect the quality, cost, features, specifications, tooling requirements, and longevity required of the vertical knee mill. If you’re not tech savvy or don’t have the expertise for installation, be sure to check for the price of having a professional installation done for you.

Summit Machine Tool offers complete solutions for high quality equipment, support, and parts and service to assist you with your vertical knee mill requirements.