OPEN POSSIBILITIES

03

Case studies of installing 5-axis machining centers and multitasking machines.

Nabeya Bi-tech Kaisha

Nabeya Bi-tech Kaisha

  • Employees: Approx 400
  • MU-4000V-L/MU-5000V-L

 

  •  
  •  

 

  •  
  •  

Here are case studies of customers who have installed 5-axis machining centers and multitasking machines.
Use these as case studies to assist in problem-solving

Nabeya Bi-tech Kaisha

The effort required for additional machining of pulley shaft holes has been dramatically reduced, boosting productivity

Please share why you decided to install a 5-axis machining center.

We manufacture power transmission pulleys (castings) used in blowers and commercial air conditioners. We also provide a “shaft hole additional machining service”, which is an additional service to machine shaft holes, screw holes, and keyways to the workpiece. Within a day, machining process is done and product is shipped out. For 30 years, we relied on three machine tools, including a lathe and an in-house-built special-purpose machine, to perform pilot hole drilling, turning, and screw tapping. However, the numerous processes and the need for skilled labor for tasks like diagonal hole machining made it challenging to reduce time. We concluded that investing in a 5-axis machining center was essential to boost productivity.

Nabeya Bi-tech Kaisha

Given these circumstances, what made you choose Okuma?

While comparing the performance and features of 5-axis machines on the websites of various machine tool manufacturers, my boss encouraged me to visit Okuma and see the machines in person. Therefore, we visited Okuma to thoroughly examine the machining precision, range, and cycle time, as well as operability and ease of use.
In addition to its high basic performance, what stood out to us was the excellent accessibility to the machine, which eliminates the need for climbing stairs. We were particularly concerned about other manufacturers' machines, which required workers to go up and down stairs during setup, creating additional strain for them. Another feature that caught our attention was the collision avoidance system. We were convinced that this feature would significantly reduce preparation time by eliminating the need for operators to perform interference checks on the actual machine. Additionally, we found it highly appealing that measurement results of machining accuracy, maintenance information, and operation manuals could be easily checked on the large operation screen.
Furthermore, since we plan to utilize the machining center not only for additional shaft hole machining but also for custom product manufacturing in the future, we determined that Okuma's 5-axis vertical machining center "MU-V" was the optimal choice. This decision was based on a comprehensive evaluation of machining quality, workability, cost, applicability, and other factors.

Nabeya Bi-tech Kaisha
Nabeya Bi-tech Kaisha
Nabeya Bi-tech Kaisha

Machining that previously required three machines is now completed by a single machine.
Machining time has been reduced to around 1/2 to 1/3, and machining productivity has approximately doubled.

Now that you have installed the MU-4000V-L and MU-5000V-L, how would you rate their productivity and ease of use?

The preparatory hole drilling, lathe machining, and drilling machine operations, which previously required three separate machines, can now be completed by a single MU-V machine. This has halved the machining time per piece from 15–20 minutes to 5–10 minutes. As a result, the daily production limit, which was previously capped at 35 pieces, has increased to approximately 60 pieces.
The improved accessibility of the machine has also reduced the operator's strain, making setup work much easier and more efficient.
In addition, the “3D Virtual Monitor” enables us to check for interference on a PC in advance, significantly reducing preparation time before actual machining. The operation screen of the “Collision Avoidance System” also allows us to check for interferences in advance, eliminating the risk of collisions. This has made first-part machining, which previously required a slower feed rate, much more efficient. Maintenance information is also accessible through the OSP, with maintenance and inspection schedules clearly visualized. This ensures proper machine maintenance, helping to prevent breakdowns and unexpected shutdowns.

Nabeya Bi-tech Kaisha

Thank you very much.