Helping you #Make Sense of Sensors
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MINIATURE INDUCTIVE SENSORS Being Swiss places an expectation on Contrinex for an expertise in miniaturisation and so it is perhaps no surprise that Contrinex excels in this arena, with for example the world’s smallest inductive sensor. CLICK HERE to view this product family on Contrinex’s website, or call us to help guide you through selection, or answer your questions. Below are links to additional information and an application story.
High-speed machining centres often feature automatic tool-changers that help maximise productivity. A Swiss drive-motor manufacturer uses sensor technology to detect the position of a machine’s main spindle before initiating the tool-change sequence. Contrinex miniature inductive sensors detect the position of a slotted centring-disc mounted on the motor shaft with exceptional repeatability and positional accuracy better than 0.01 mm. CUSTOMER APPLICATION Modern machining centres execute multiple metal-cutting operations at a single station, often deploying a separate tool for each operation. Time spent changing tools is non-productive, reducing efficiency and machine utilization. Automating tool-changes keeps lost time to a minimum but requires highly accurate positional measurement of the main spindle to prevent damage occurring. After completion of an operation, the main spindle of the machine comes to rest. Only after it reaches the null position – the point at which the tool disengages completely – is the tool-change sequence initiated. Reliable detection of the null position requires exceptional accuracy and repeatability in sensing the position of a shaft previously rotating at up to 14,000rpm. A miniature sensor, capable of withstanding mechanical shock, high levels of vibration and an oily environment, must detect the position of a slotted centring-disc mounted on the drive-motor shaft. The required angular resolution translates to a positional accuracy of better than 0.01mm.
Customer Solution Contrinex inductive sensors are designed for exceptional long-term reliability and repeatability in demanding environments, and lightweight sensors from the Miniature range are ideal for this application. Constructed from V2A/AISI 303 stainless steel with PPE sensing faces and hermetically sealed cable entries, these embeddable M5-diameter sensors take up minimal space. The centring disc is mounted in a rotary-encoder housing fitted to the drive-motor shaft. The 25mm-long sensor is embedded directly in the wall of the housing and the sensing distance of 0.8mm eliminates any risk of accidental collision with the disc. The sensors are configured with an industry-standard PNP normally-open interface, connected to the customer’s control system via a flexible, oil-resistant PUR sheathed cable. Vacuum-encapsulated electronics ensure excellent resistance to shock and vibration, and no additional electrical or mechanical protection is required. Fit-and-forget operation keeps maintenance requirements to a minimum, overcoming the mechanical fragility of alternative optical- sensing encoder technology. The sensor detects the position of the centring disc, reliably and repeatably, with an accuracy better than the required 0.01mm. Contrinex Miniature inductive sensors provide a highly effective and affordable solution.
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CUSTOMER VALUES • Highly accurate, repeatable sensing performance in demanding conditions • Embeddable miniature sensor with minimal effect on machine dynamics • Fit-and-forget operation with excellent resistance to shock and vibration • Affordable, highly reliable solution
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PRODUCT ADVANTAGES • Lightweight, hermetically sealed miniature sensors • V2A/AISI 303 stainless-steel construction with vacuum-encapsulated electronics • Best-in-class 0.8mm sensing distance
APPLICATION - HIGH-SPEED SPINDLE MONITORING
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Helping you #MakeSenseofSensors
MINIATURE INDUCTIVE SENSORS Being Swiss places an expectation on Contrinex for an expertise in miniaturisation and so it is perhaps no surprise that Contrinex excels in this arena, with for example the world’s smallest inductive sensor. CLICK HERE to view this product family on Contrinex’s website, or call us to help guide you through selection, or answer your questions. Below are links to additional information and an application story.
FIND OUT MORE - HERE ARE SOME SUGGESTIONS:
AUTOMOTIVE APPS BROCHURES VIDEOS
APPLICATION - HIGH-SPEED SPINDLE MONITORING
High-speed machining centres often feature automatic tool- changers that help maximise productivity. A Swiss drive- motor manufacturer uses sensor technology to detect the position of a machine’s main spindle before initiating the tool-change sequence. Contrinex miniature inductive sensors detect the position of a slotted centring-disc mounted on the motor shaft with exceptional repeatability and positional accuracy better than 0.01 mm. CUSTOMER APPLICATION Modern machining centres execute multiple metal-cutting operations at a single station, often deploying a separate tool for each operation. Time spent changing tools is non- productive, reducing efficiency and machine utilization. Automating tool-changes keeps lost time to a minimum but requires highly accurate positional measurement of the main spindle to prevent damage occurring. After completion of an operation, the main spindle of the machine comes to rest. Only after it reaches the null position – the point at which the tool disengages completely – is the tool-change sequence initiated. Reliable detection of the null position requires exceptional accuracy and repeatability in sensing the position of a shaft previously rotating at up to 14,000rpm. A miniature sensor, capable of withstanding mechanical shock, high levels of vibration and an oily environment, must detect the position of a slotted centring-disc mounted on the drive-motor shaft. The required angular resolution translates to a positional accuracy of better than 0.01mm. Sensors fitted to the hoist carriage detect the ends of the structure, cutting power to the drive-motors and preventing the carriage from travelling beyond allowable limits. Mechanical play in the drive system results in the carriage drifting laterally as it travels along the crane structure. The 15mm sensing range of a competitor’s sensors were inadequate; occasionally causing sensors to collide with the crane’s structure, causing damage and interrupting operation. Better inductive sensors with increased sensing range are needed to prevent collisions.
Customer Solution Contrinex inductive sensors are designed for exceptional long-term reliability and repeatability in demanding environments, and lightweight sensors from the Miniature range are ideal for this application. Constructed from V2A/AISI 303 stainless steel with PPE sensing faces and hermetically sealed cable entries, these embeddable M5- diameter sensors take up minimal space. The centring disc is mounted in a rotary-encoder housing fitted to the drive-motor shaft. The 25mm-long sensor is embedded directly in the wall of the housing and the sensing distance of 0.8mm eliminates any risk of accidental collision with the disc. The sensors are configured with an industry-standard PNP normally-open interface, connected to the customer’s control system via a flexible, oil-resistant PUR sheathed cable. Vacuum-encapsulated electronics ensure excellent resistance to shock and vibration, and no additional electrical or mechanical protection is required. Fit-and- forget operation keeps maintenance requirements to a minimum, overcoming the mechanical fragility of alternative optical-sensing encoder technology. The sensor detects the position of the centring disc, reliably and repeatably, with an accuracy better than the required 0.01mm. Contrinex Miniature inductive sensors provide a highly effective and affordable solution.
+ CUSTOMER VALUES • Highly accurate, repeatable sensing performance in demanding conditions • Embeddable miniature sensor with minimal effect on machine dynamics • Fit-and-forget operation with excellent resistance to shock and vibration • Affordable, highly reliable solution PRODUCT ADVANTAGES • Lightweight, hermetically sealed miniature sensors • V2A/AISI 303 stainless-steel construction with vacuum-encapsulated electronics • Best-in-class 0.8mm sensing distance +