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SMAC makes Moving Coil electric actuators. These products are the fastest actuators in the world. Cycle life is well beyond 100M. They have the ability to softly land on surfaces and then apply a programmed specific force. SMAC’s new LDL series of linear actuators has a list price of around $300 making them the first real electric actuator alternative to air cylinders. This price is based on SMAC’s contstent cost down program featuring pointed coils, in-house manufactured encoders, and laser cut parts. SMAC invented the Linear Rotary actuator 25 years ago. These are widely used in Electronic Pick and Place, Quality Thread Check, Bottle Capping, and beginning to find wide use in Automatic Screw Driving and SMART Drilling and Tapping. Interestingly a number of companies are making an effort to copy SMAC - but are not able to match technology or price. SMAC also has stepped up its efforts in inspection by launching the MLA series - a direct challenge to old tech LVDT devices.

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Machine Tool Machine Tool


SMAC Measurement Tool Replaces Height Gauges

POSTED 07/15/2020

SMAC Moving Coil Actuators has released details on their upcoming Measurement Tool available in Q3, 2020.

The SMAC Measurement Tool addresses the limitations of using a traditional Height Gauge commonly use in shop floor part measurement. These height gauges typically have numerous drawbacks such as manually zeroing or adjusting a dial indicator by moving it up or down with one hand while struggling to hold the part with the other hand. This dial indicator has a spring-loaded measuring tip that must be tapped slightly in order to get a “good reading” and the reading is only to 2 decimal points (metric) resolution, requiring measuring finesse by the inspector/machinist. Further, using a traditional Height Gauge, parts must all be measured top down. Sometimes it may be easier to measure part features horizontally. This means a certain level of skill is required in order to correctly use a traditional height gauge. More complex and costly digital height gauges have entered the market improving measurability with additional features making measurement easier but only increasing the need for more technical competency to operate. In these cases equipment alone can exceed $5,000-$10,000 in initial cost.

By contrast, the SMAC Measurement Tool has a direct drive linear motor which has no backlash to effect measurement accuracy and repeatability. SMAC’s exclusive “Soft-Land” technology means that the measuring actuator can move slowly - gently bump (gram level forces) into the surface to be measured - stop and even apply a desired push or settling force to be used during measurement. In terms of measuring uncertainty, while contact measurement using indicators or mechanical measuring probes is considered more accurate than non-contact types, with the SMAC Measurement Tool there is no manual operation involved to dial this in; thus removing all human error. The SMAC Measurement Tool uses a built-in encoder with a 1 micron resolution. This translates to 3 decimal point measurement resolution (mm). Further, the device can measure both in vertical or horizontal orientations from respective datums. Measurement data can be automatically uploaded to data collection devices via standard serial communication. Machine operators can be quickly taught to make measurements in the Inch or Metric using a simple human machine interface (HMI) - no high degree of technical expertise is required.

SMAC 100% inspects critical tolerance parts relative to a flat datum surface. With the Measurement Tool's Scan mode, the operator can measure and verify flatness, concentricity, and roundness. The SMAC Measurement Tool’s simplicity, ease of use, and data feedback capability enables machine operators with minimal training to handle many required measurement tasks.

The SMAC Measurement Tool is a competitively priced improvement in machine shop measuring technology. The complete kit includes an LCA25 SMAC Actuator with 100mm, measuring range with 1um encoder, controller, power supply, measurement probe, storage case, operation manual, and HMI Display. The system operates on safe 48 volts DC. Price for the complete kit is under $2,000.

SMAC Moving Coil Actuators offer true “mechatronic solutions.” By that they mean their actuators have unique capabilities such as programmable and controllable position, velocity, and force, high accelerations, cycle life well over 100M, and a patent-pending “Soft-Land” capability. The Soft-Land capability is particularly useful when performing fragile part assembly, measurement, moving objects, etc. Real time feedback of these motion attributes enables proof that the work is done (i.e., direct quality feedback).