Rigibore’s Precision Vision Decision

Rigibore is a renowned manufacturer of precision boring bars and advanced boring systems, that uses sophisticated in-house software to design and manufacture special tooling solutions that are specific to customers’ applications.

Extensive experience in the specialist area of boring tool technologies and boring strategies has enabled Rigibore to become a world leader in the design and manufacture of highly productive boring tools. The company’s expertise and growing global reach was recognized by the award of the Queen’s Award for Enterprise in International Trade in 2013.

In addition to other demanding sectors, Rigibore boring bars are used throughout the world within the automotive, aerospace, marine, agricultural and heavy plant manufacturing industries. As well as being a trusted supplier to many major international manufacturers, Rigibore also works closely with a number of leading international machine tool builders.

The efficiency and accuracy of Rigibore products, such as the company’s Smartbore and ActiveEdge products, is largely due to their high precision,Rigibore’s use of advanced manufacturing techniques and the company’s strict quality culture.

Rigibore’s Smartbore system is designed to enable an operator to quickly and easily make manual, micron-accurate adjustments to the cutting edges of a fine boring tool while it is located in the machine spindle. The Smartbore design needs no clamping or unclamping in adjustment, eliminating vibrations that can occur whilst in operation.

Another of Rigibore’s flagship products is ActiveEdge- an automatically compensating boring solution. This innovative system uses wireless technology to hold a close tolerance bored diameter without the need for operator intervention.

The ActiveEdge system can be partnered with a gauging or probing device, allowing CNC programs to monitor bore sizes and adjust accordingly as part of a closed loop manufacturing process.

To ensure that Rigibore remains at the forefront of its chosen field, the company pursues a Continuous Improvement Program (CIP) across all of its activities.

As well as further improving Rigibore’s already high quality standards, a major aim of the company’s CIPis to increase levels of efficiency in order to ensure that its products remain commercially competitive. A recent review of avital, time consuming inspection tasks identified it as an area where both precision standards could be improved and major time savings could be achieved.

Greg Cocks, Rigibore Engineering Director explains. “To confirm the accuracy of the pockets in our holders that house our customers’ carbide inserts, our quality staff would load an insert into each individual holder’s pocket, then make the relevant measurements. Although this 100% inspection technique guaranteed the required pocket accuracy, it was extremely laborious for the operators concerned and also very time consuming.”

“Having searched for an answer to speeding-up this important task and a solution to making further accuracy gains, our local Mitutoyo Sales Engineer suggested the use of a high-precision, high-speed CNC vision measuring system. Mindful of the large volumes of carbide insert holders we produce and our demanding accuracy specifications, a demonstration of the suggested Mitutoyo,Quick Vision Elf Pro model, measuring our parts, was organised.”

“As the machine proved ideal and given the urgency of our requirement, it was quickly purchased and installed. Our quality staff now simply load multiple holders on to the Quick Vision Elf Pro’s bed, recall the relevant part program and instigate a rapid, fully automatic CNC measuring routine. As the complex geometry and dimensions of each pocket is now measured with a greater degree of precision and detail, we are able to guarantee the accuracy of the fit without the need to pre-load carbide inserts.”

“The speed, accuracy and repeatabilityof our new Mitutoyo CNC vision measuring system means that we have achieved and surpassed all of the aims of theCIP project’s original remit. We have slashing our measuring times and improved our accuracy capability. Also, as the inspection of our holders’ pockets take place so soon after their production, we are now able to provide rapid feed-back to production related to any component parameters that are drifting from their nominal conditions.”

Mitutoyo offers a wide range of high-quality 3D CNC Vision Measuring Systems, from lightweight, space-saving design that offer a very high performance/cost ratio, through to a machine that measures work-pieces while they are moving by using a high-intensity-LED stroboscopic image-capturing technique.

The Mitutoyo Quick Vision Elf Pro, as used by Rigibore, is an advanced 3D CNC Vision Measuring System with a measuring rangeof X 250, Y 200 mm and Z 200 mm. The Quick Vision Elf Pro has a resolution of 0.1 µm and provides accuracy in the 2.3µm class, when measuring up to 100mm.

In addition to its impressive accuracy specification the Quick Vision Elf Pro is regarded as a highly efficient, time saving 3D CNC Vision Measuring System due to its impressive X/Y/Z axes drive speed of 200 mm/s.

Programmable ring lighting provides flexibility in lighting direction, angle and intensity regardless of the inclination of the work-piece surface. This feature enables maximum surface contrast to be achieved, and by extension best imaging resolution and accuracy to be realized.

Fine control of obliquity and direction provides optimal illumination for measurement. Obliquity can be arbitrarily set in the range from 30° to 80°. This type of illumination is most effective for enhancing the edge of inclined surfaces or very small steps. Illumination can be controlled independently in every direction, back and forth, right and left.

The Mitutoyo Quick Vision Elf Pro’s programmable Power Turret (PPT) offers a three tube lens selection to provide three magnifications with the same objective lens. Replacement of objective lenses allows a wide magnification range to support a wide variety of measurements.

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