Linear flying shears are used in a variety of applications ranging from cutting material on the fly, filling bottles as they are fed on a conveyor, to forming soft material in a mold while being transferred along the process. This particular overview describes the flying shear (cutting) application, but can be used for any process that requires speed matching to a given axis. Linear flying shear applications can be used to solve both random in-feed and constant feed applications. This application controls the linear axis of the saw to ensure accurate cutting as well as a digital output for providing management of the cutting mechanism.
Application Challenges
- Multiple Cut Modes
Controller must be able to accurately cut product for cut-to-length as well as cut-to-registration on the registration mark of the material.
- Matching Conveyor Speed
As product is being cut, speed matching is critical to prevent product damage and yield smooth, straight cuts.
- Increased throughput
Higher productivity should result from the addition of this motion control solution due to higher speeds and lower downtime
- Smooth Motion
The solution must yield smooth motion to reduce machine wear produced by jerky accelerations, resulting in increased machine life and lower maintenance (more uptime).
Applicable Products
| Servo and Motion Products | Features | Benefits |
| Pre-developed Linear Flying Shear Solution Package available to be customized to a specific machine | Reduced development time with increased success using proven robustness |
| Electronic camming with shifting for registration adjustment | Accurately align knife to registration mark for uneven product cycles and develop smooth cam profiles to eliminate jerky motion |
| Electronic camming with cam shifting for registration adjustment | Accurately align knife to registration marks for uneven product cycles and develop smooth cam profiles to eliminate jerky motion |
| Up to four axes of control | Provide feeder control in addition to shear axis |
| Ethernet based controller | Easily add Ethernet I/O and other Ethernet devices for enhanced integration |
Application Details
A solution package template was created for the MP2300, and example code generated for the SMC product family. With these resources, implementation of a Linear Flying Shear machine is made simple. The machine is controlled using a DI (Digital Input), a DO (Digital Output), and an HMI (Human Machine Interface).
The shear accelerates and synchronizes to cut point on the product based on the encoder signal that measures the feed length of the product. After the cut is completed, the shear returns to the home position.
Two cut modes can be implemented, cut-to-length and cut-to-registration. The operator can select the mode in the HMI. Cut-to-length cuts the product regularly based upon a set cut length. Cut-to-registration uses the registration mark as the cut point. In both modes, the controller utilizes electronic an electronic cam profile to ramp up to speed and speed match the material by utilizing a 1:1 cam profile in the cut region. The electronic cam profile creates a smooth acceleration in order to minimize jerk, reducing wear and tear on the machine in order to increase uptime.
Incorporating the Yaskawa line of amplifiers and servomotors introduces the highest quality servo equipment in the industry to increase performance and reduce downtime. In addition, Yaskawa motion controllers can be integrated into larger control systems using Yaskawa machine controllers as well as a variety of communication capabilities, to provide ultimate connectivity and complete Yaskawa solutions.
Additional Information
The pdf contains the same information as the web, but in some cases may contain more and should be used if a printed version is required.
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