{"id":6159,"date":"2021-05-03T08:11:34","date_gmt":"2021-05-03T08:11:34","guid":{"rendered":"https:\/\/www.acrn.fr\/product\/torque-measurement"},"modified":"2026-04-22T16:11:46","modified_gmt":"2026-04-22T14:11:46","slug":"torque-controller-under-screwdriver","status":"publish","type":"product","link":"https:\/\/www.acrn.fr\/en\/product\/torque-controller-under-screwdriver\/","title":{"rendered":"Torque controller under screwdriver"},"content":{"rendered":"

The torque controller for screwdrivers is a measurement system designed to be positioned directly beneath the industrial screwdriver, between the screwdriver tool and the product being assembled. It measures in real time the actual static torque transmitted to the workpiece, regardless of the screwdriver\u2019s own readings\u2014which can vary due to tool wear or load fluctuations.<\/p>\n

Unlike torque meters, which measure the torque required to unscrew a cap after tightening, the screwdriver-mounted torque controller measures torque at the exact moment of tightening, under actual production conditions. This is the most reliable method for calibrating a screwdriver, detecting torque drift, and validating a screwdriving process in accordance with quality requirements.<\/p>\n

The ACRN system consists of a rugged, self-stabilizing static torque sensor (with a range of 0.5 to 25 N\u00b7m), a standard \u00bc-inch female square drive, and an XA-m readout console with a digital display, memory, and data output.<\/p>\n

Why measure torque directly at the screwdriver?<\/span><\/strong><\/h2>\n

In an industrial capping process, the screwdriver displays a target torque value.<\/p>\n

However, this pair is not always the one that is actually transmitted to the plug. Friction losses within the tool, wear on the bits, variations in product viscosity, or the geometry of the cap can cause significant discrepancies between the displayed torque and the actual torque. These discrepancies often go unnoticed until they lead to problems on the production floor: leaks, caps that won’t open, and non-conformities during outgoing quality control.<\/p>\n

The ACRN screwdriver torque controller eliminates this uncertainty by measuring torque directly at the tool-workpiece interface, with an accuracy of 0.1% of full scale and a sampling rate of 5,000 Hz. This temporal resolution makes it possible to capture dynamic torque spikes that are invisible to the naked eye, which are often the cause of screw-driving defects on high-speed lines.<\/p>\n

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System description<\/strong><\/h3>\n

Measurement console XA-m<\/p>\n

Embedded sensor with a capacity from 0.5 to 25 N.m<\/p>\n

Upper standard drive with female<\/p>\n

Base with hole drilling<\/p>\n

Central body of the sensor casing<\/p>\n

Dimensions for female square:<\/strong><\/p>\n

\"floor<\/p><\/div>\n

\"torquemeasurementpng\"<\/div>
<\/div>\n

 <\/p>\n

Possible adaptations for the top drive of the srewing machine:<\/strong><\/p>\n

-Other dimension of squares<\/p>\n

-End caps<\/p>\n

-Dummy caps<\/p><\/div>\n

\"square\"square<\/div>
<\/div>\n

 <\/p>\n

Possible adaptations fot the plinth:<\/strong><\/p>\n

Customized base for adaptation of buckets or specific dimensions.<\/p><\/div>\n

\"Torque<\/div>
<\/div>\n
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Applications and Industries<\/strong><\/span><\/h2>\n

The torque controller for screwdrivers is used in all industrial sectors where automatic or semi-automatic screwdrivers are used for capping, screwing, or assembly operations:<\/p>\n

Cosmetics and Fragrances<\/strong><\/span><\/h3>\n

Qualification of capping machines on packaging lines for perfumes, creams, and skincare products. Checking the tightening torque ensures that the bottle is sealed and that the torque specifications defined in the technical specifications are met.<\/p>\n

Pharmaceutical<\/strong><\/span><\/h3>\n

Verification of the torque applied to child-resistant caps, syrup bottles, and primary packaging. Measurement traceability is compatible with GMP requirements and quality document management systems.<\/p>\n

Agri-food<\/strong><\/span><\/h3>\n

Inspection of capping machines on filling lines for jars, bottles, and food containers. Insufficient torque can lead to leaks or contamination; excessive torque can damage the cap or make it difficult to open.<\/p>\n

Automotive and Assembly<\/strong><\/span><\/h3>\n

Verification of the repeatability of pneumatic or electric screwdrivers on assembly lines, either as a supplement to or in place of periodic checks using a torque wrench.<\/p>\n

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Options and accessories<\/strong><\/span><\/h2>\n\n\n\n\n\n\n\n
Printer<\/td>\n<\/tr>\n
Extended wires<\/td>\n<\/tr>\n
Additional sensors<\/td>\n<\/tr>\n
Dummy caps<\/td>\n<\/tr>\n
Drive adapters<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Also worth checking out :<\/strong><\/span><\/p>\n