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10 Tips to Prevent Your CNC Machine From Standing Idle

Gain extra spindle hours by automating pallet and product jobs.

10 Tips to Prevent Your CNC Machine From Standing Idle

While every situation is different, and different challenges play a role in every factory, here are some tips to prevent your CNC machine from standing idle. Article by BMO Automation.

10 Tips to Prevent Your CNC Machine From Standing Idle

With a servo controlled gripper, the operator no longer has to adjusts gripper fingers to the correct size.

A machine that is producing generates money. A machine that stands still costs money. In the machining sector, the full production capacity of CNC machines is often not used. Here are 10 tips to prevent your CNC machine from standing idle.

Tip 1: Standardise the raw material.

By standardizing the raw material, multiple product series can be made from the same format material. Simply put: mill more off. Changing products happens faster because the operator can use the same fixture. Resulting in less downtime.

Tip 2: Provide the CNC machine with a zero point clamping system.

With a zero point clamping system on the machining table, the operator can quickly change fixtures. Moreover, the advantage is that new fixtures can be prepared while the CNC machine is machining. With a zero point clamping system on the machining table you are also prepared for automated fixture changes.

Tip 3: Automate!

By providing a CNC machine with an automation solution, it will make more spindle hours. You can start automating at different levels. The easiest form is bar feed on a lathe. The next step is pallet and/or product loading.

Tip 4: Are you opting for single-batch or multi-batch automation?

What is single-batch automation? Automating of one product series. No continuous production but simply one unique product in one program loaded on the CNC machine through product loading. A higher level is multi-batch automation. Automating multiple product series in one continuous process. You combine the loading of products with the changing of a pallet with an automatic machine clamp or a clamped product on top. This makes 24/7 production of multiple product formats and product series possible. The biggest step towards less downtime is made with multi-batch automation. It is important that the machining table is equipped with the correct connections to control the machine clamps.

Tip 5: Choose one gripper that can handle it all.

The span on multiple product formats is great, but if the gripper cannot pick up all the sizes, the added value remains low. One solution is to use multiple grippers, but the changing will take time and the format range is often still limited and it comes at the expense of storage capacity. Another solution and a better one is the servo-controlled gripper that adjusts itself fully automatically to all possible product sizes. The setting time is 0 and the flexibility very high.

Tip 6: Continuous production of multiple product jobs.

All the previous tips are of little utility if only one CNC program can be produced with the automation software. Continuous production is necessary, otherwise the CNC machine will stop when the program comes to an end. Choose a software with which multiple different product series can be edited in a continuous process.

Tip 7: Focus on automating single pieces and small series.

On which products do you make the highest margins? Often these are single pieces and small series. By implementing all the previous tips, you have an automation that is fully set to this. With automation you can produce 24/7 and deliver faster due to a shorter product turnaround time. Selling ‘No’ because of a low capacity is something of the past. At least until your CNC machine makes 160 hours a week and you have to link a second CNC machine to the automation to meet the growing customer demand.

Tip 8: Make sure you have enough tools in your CNC machine.

A simple calculation. On average, a CNC machine has 60 tools of which 40 are standard. If you produce more than 5 different product series with 5 unique tools per series unmanned, you will already run into problems. A large tool stockroom is unnecessary luxury. Of course this can be taken into account by using the same tools as much as possible in the CNC programs during the preparation. But what happens when a miller breaks? Will you lose production and will the CNC machine stand still? Tip 9 offers a solution.

Tip 9: Manage the stand life of your tools.

The solution? Tool life management. The robot controls the total machining process but also calculates exactly which production per mill is feasible. Can the tools in the machine handle the numbers? What does the machine do if it breaks? The Tool Life Management module cleverly handles this and prevents the shutdown of your CNC machine.

Tip 10: Manage the automated process.

Continuous production and a maximum number of spindle hours are not simply achieved. Your operator has to become a process engineer. Does the coolant retain the correct values? Can the chip conveyor handle the quantity? Is the collection bin large enough? The total automated process must be optimized to avoid downtime.

These are just 10 tips to prevent your CNC machine from standing idle. Every situation is different, and different challenges play a role in every factory. Full use of production capacity involves attention, knowledge and experience. Be sufficiently informed and, above all, look carefully at your own process and the products that you produce.

 

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