When it comes to machining and metalworking, cutting tools are the workhorse of this profession. From tiny medical equipment to heavy industrial machines, these tools are used to give shape and finish.
Like any other tool, these cutting tools also lose their performance over time due to wear, heat, and other factors. This is why it is very important to find and implement strategies that extend the cutting tool’s life and performance.
We are going to go through five proven techniques in the article below that you may use to improve the life of your cutting tools. Implementing these techniques will help reduce costs incurred in replacing tools, eliminate downtime periods, and ensure uniform quality throughout production runs.
Proper tool selection and application
The first step to prolonging the life of a cutting tool is choosing the right one for the job and using it properly. Various cutting tools, such as pipe taps, taper taps, spiral point taps, etc, are made for specific materials, operations, and conditions, so using an incorrect tool can cause premature wear, chipping, or even tool failure.
Always adhere to the manufacturer’s recommendations regarding appropriate tool material, geometry, and coating for your application. For example, in case of harder or more abrasive materials, you may need to consider tools made of harder substrates such as tungsten carbide or ceramic.
Moreover, it is vital that you comply with recommended cutting parameters such as speeds, feeds, and depths of cut. This might generate excessive heat which is beyond what a tool can sustain, resulting in accelerated wear or even crushing breakdown.
Good coolant and lubrication
Cutting processes produce a lot of heat as well as friction that can increase tool wear and reduce performance. It is important to have good coolant and lubrication systems in place to aid in heat dissipation, decrease friction, as well as wash out chips and other dirt.
There are different ways for supplying coolant based on the specific application: flood coolant, mist coolant, or through-tool coolant systems. Make sure that the flow rate and pressure are suitable for your operation and that the cutting zone is properly reached by the coolant.
Additionally, you should consider using certain types of cutting fluids or lubricants that are made especially for your specific application. In contrast with traditional coolants such fluids provide an improved chip evacuation system and better lubrication as well as expand tools’ lifetime.
Stiff and steady fixturing
Cutting tool life and performance suffer from vibration and chatter. Very slight vibrations can cause tool wear ahead of time, resulting in a bad surface finish and even distorting the workpiece or machine tool.
To minimize vibration and ensure a stable setup, it’s important to:
- Use rigid machine tools that are kept in good working order
- Properly clamp and support the workpiece
- Optimize tool holders and spindle connections
- Try using damped tool holders or other types of damping systems
- Precisely balance rotating tools as well as workpieces
Further, consider the rigidity of fixturing and work holding setups on reducing deflection while machining (and thus improving the overall machining stability).
Tool condition monitoring and preventive maintenance
Making your tools in good shape through proactive monitoring of their conditions as well as preventive maintenance can contribute much to enhancing the life span and efficiency of cutting tools. By regularly watching for changes in the wear rate of a tool, you can take necessary steps before it fails.
Modern tool condition monitoring systems apply different sensors and techniques that measure signals, such as cutting forces, vibration, acoustic emissions, and power consumption. These tools are able to give you signals on when the tool is about to reach its end-of-life enabling you to plan for changes in the process so that unexpected downtime is avoided.
Advanced equipment management and storage
Proper tool management and storage can make a tremendous impact on the life and performance of cutting tools. Insufficient inventory management, storage, and handling practices can lead to pollution and damage to tools, as well as improper choice of tools that affect their durability and performance.
Incorporate strong systems for managing tools that keep track of usage, maintenance, replacement timetables, etc. Properly storing the tools in cabinets meant for them or even using climatic storage solutions will help avert corrosion, damage, and contamination.
Conclusion
The combination of these five methodologies can substantially lengthen the lifespan and enhance the performance of cutting tools, thereby reducing costs, boosting productivity, and ensuring uniformity in part quality.
