Machining Center Cutting Tools And Application Knowledge

Machining center cutting tools and application knowledge

The root cause of poor CNC machining accuracy is often not caused by the program, but by the "cutting corners" in the tool itself.

Tool geometric accuracy must meet standards

The cutting edge profile accuracy will have a direct impact on precision machining, causing the final surface quality to change. Once the grinding process is not accurate enough, radius deviation will exist, and the machining size will be out of control.

In the actual production process, a large number of manufacturers only focus on the tool coating and material, but completely ignore the geometric accuracy of the cutting edge. There is a situation where if the accuracy of the tool does not meet the corresponding standards, no matter how well the CAM path is set, it is impossible to process products that meet the qualified requirements.

Control radial runout error

The overhang length of the tool holder must be within the specified range, and the overhang length of the tool system must also be within the specified range. This is a prerequisite for ensuring the smooth operation of the spindle. Regarding radial runout error machining center cutting tools and application knowledge, separate inspections must be carried out at the tool holder and at the cutting edge.

Severe vibration of the spindle will be caused by excessive runout, which will accelerate tool wear and even cause tool breakage. Regular inspection of the coaxiality of the tool system is an effective means to reduce the scrap rate.

Choose the right cutting tool

The first thing to do is to analyze the workpiece material characteristics, which include key measurement criteria such as hardness, flexibility, heat conduction performance, etc. CNC milling tool path type , and then select the tool. Different types of materials have greatly different requirements for tool materials and coatings.

Secondly, it is necessary to take into account the requirements of the processed surface quality, the accuracy level, and the production cost budget. Under the premise of meeting the process requirements, only by selecting the most cost-effective tool solution can we create the greatest value for the enterprise.

High speed cutting parameter calculation

There are three important formulas, which belong to the category of high-speed cutting and are used to calculate cutting speed, feed , CNC milling tool path type , and material removal rate. Mastering these formulas is the basis for reasonably setting processing parameters.

Many programmers set parameters at will based on experience. As a result, either the efficiency is low or the tool life is short. The correct calculation method can more than double the processing efficiency and significantly extend the service life of the tool.

Analysis of key processing parameters

The cutting speed Vc of the recommended value provided by the tool supplier is the most core parameter. It can also refer to experimental data, or based on the accumulation of self-built databases. The Vc value will have a direct impact on surface finish and tool life.

Deff CNC milling tool path type , which is the effective tool diameter, and fz, which is the feed per edge, are also of importance that cannot be ignored. ap, which is the axial feed amount, and ae, which is the radial feed amount, need to be comprehensively determined based on the spindle rigidity, tool strength and material properties, and cannot be set arbitrarily.

S136 Material Cutting Test

This test uses a tool with a diameter of 10mm, six edges, and is coated with TiAlN coating to verify the cutting ability of S136 mold steel. The data obtained from the test can provide a reference for processing similar materials.

After actual testing, it has been verified that it is necessary to accurately set parameters, select precise tools, and continuously adjust and optimize parameters during different working conditions to successfully find a most suitable processing plan. The true meaning of this conclusion is the importance of parameter setting and tool selection.

In the actual machining process, have you ever encountered the problem of too much tool vibration, causing the tool to vibrate? You are welcome to leave a text about your experience and solutions. If you think it is useful, please like it and forward it to more practitioners in the same field!