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CMT Introduces Slide-A-Mark Double Acting Impact Markers

Columbia Slide-A Mark impact marker is shown, left, with stamp and retainer mounted in the special molded sound material, right, behind the sheet metal to be marked.

New Columbia 871 Slide-A-Mark impact marker is shown with optional floating stamp head.

"Columbia Marking Tools, Inc. (CMT) developed double-acting air-operated impact markers suited for applying impact marks in a variety of materials, particularly sheet metal parts," said a CMT spokesperson. "This type of marking typically marks such things as date and shift codes, QC marks, part numbers, traceability marks, company logos, lot numbers, trademarks and even some staking operations.

"In many sheet metal applications, impact marking is the ideal process of choice. However, users are always looking for methods of quieting down the noise from the hitting action. Recently, CMT developed a concept where the stamp holder is mounted stationary on the opposite side of the part in a special molded sound suppressor material which is slightly raised above the stamps. The impact marker utilizes a floating holder anvil adaptor attached to the end of the marker. As the marker pre-loads the part before firing its internal hammer, the sheet metal is pressed into the molded sound material, which reduces a portion of the transmitted sonic noise/vibration. Application has shown that the stamps and retainer last longer, can still be easily changed and the concept accommodates those situations where there is not enough room to mount the marker in the desired area.

"The impact marker units utilize a two-stage impact marking sequence where the marker telescopes out to pre-load the stamp or staking tool against the workpiece and then the cylinder fires an internal hammer generating a consistent impact force which is varied by controlling the actuation air pressure. With a floating holder adapter, slight 'Not Square' part issues can be accommodated. Each model is offered with optional retracted or dual position sensors for return and advanced position of the cylinder stroke to augment their application with automation. By simply loosening a mini dovetail clamp, the advance position sensor can be adjusted to one inch. Strokes can range from 2-1/2 to 12 inches while the marking pressure remains the same anywhere within the stroke. Slide-A-Marks are powered by factory air and controlled by a standard 4-way air valve with a regulator to vary the marking force. It is recommended the shop air supply should be a 1/2-inch air line with a maximum pressure of 100 PSI."

For more information contact:

Columbia Marking Tools, Inc.

27430 Luckino Drive

Chesterfield Township, MI 48047



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