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Benefits
Features
Specifications
Timing Cam Accessories
Benefits

Cam indexing units are designed to perform one output index with a partial rotation of the input shaft. The partial rotation of the cam with the output turret rotating is referred as the index period. Rotation of the input shaft without the output turret rotation is referred as the dwell period. The ratio between the index and dwell periods is usually related to time. Index verses dwell periods can vary but the most common for continuous duty cycles are 1:3 ratio or one part index to 3 parts dwell periods. This is typically used for continuous duty cycles when the index drive runs nonstop and the output turret needs to supply a long time for process work.

Indexing units that are driven by machinery may need to match velocity with other equipment. Custom index periods are available to synchronize motions of the equipment to avoid crashing into the rotating dial. Cycle on demand applications do not require long dwell times because the index drive motor is turned off to supply the dwell period time. If the index period is long, the motor drive torque requirement is less. For this reason, it is typical for Sankyo to use a 3:1 ratio or 270° index period with a 90° dwell period with cycle on demand applications.

Timing sensor packages are used to notify the machine controller to stop the index drive motor when the indexing dial is in the correct position. The timing cam(s) are mounted on the index input shaft to interface with a sensor switch. When the sensor detects the notched edge in the timing cam, a signal is sent to the motor controller device.

Timing Sensors - Accessories - Sankyo Automation (The Global Standard in CAM Indexing)
Timing Sensors - Accessories - Sankyo Automation (The Global Standard in CAM Indexing)
Timing Sensors - Accessories - Sankyo Automation (The Global Standard in CAM Indexing)
Photo Eye Type Sensor (IP50 or NEMA-5)

Features

Two types of sensors are offered, our standard is the photo eye type which sends a beam between two plastic posts. The timing cam's solid section acts as a shutter to break the beam and the open section allows the beam to continue. The other sensor type is a proximity switch that detects a lobe on the timing cam with impedance. Multiple timing cams can be mounted on the shaft for dwell detect or interlocking handlers before they interface with the rotating dial. Advanced timing signals can start peripheral equipment to optimize machine cycle times by compensating for electronic response times or motion lag.

Environmental compatibility should be considered when selecting the sensor type. Our standard photo eye sensors are IP50 rated (dust protection, no liquids). Most proximity sensors are IP67 rated (total dust protection with liquid immersion to 1-meter). However, alkaline (soapy water) coolants commonly used for machining and taping processes have a PH10 causing corrosion. Explosion proof sensors are also available.

Timing Sensors - Accessories - Sankyo America (The Global Standard in CAM Indexing)
Timing Sensors - Accessories - Sankyo America (The Global Standard in CAM Indexing)
Timing Sensors - Accessories - Sankyo America (The Global Standard in CAM Indexing)
Proximity Type Sensor (IP67, NEMA-6 or 6P)

Specifications

Due to the vast amount of combinations regarding power, voltage, ratio types and dimensional sizes, we prefer not to list all the configurations. Please Contact Sankyo Sales for more information about your specific application. We can provide 2D or 3D solid model drawings, user manuals and electrical specifications to assist your control panel layout design.


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