3D Laser Scanning Services

NESTech offers a range of services to help customers make their design process cost-effective, and to reduce-to-market cycle time. State-of-the-art facilities and highly skilled and competent manpower is NESTech’s commitment to its clients. NESTech provides comprehensive services in Computer Aided Design ranging from legacy data migration to product design support.

Benefits from our services:

• An average cost savings of 60% to 70% versus the costs of performing data conversion in-house.
• Guaranteed data consistency and quality meets your specifications.
• Reusability in both upstream and downstream applications makes faster time-to-market and reduced costs.
• Increased time for your design team to focus on core design tasks.

Today the industry is demanding higher quality and increased productivity in shorter lead-times. To meet the challenges of their business environment, companies are looking for ways to make production more efficient and cost-effective. Quality management has become increasingly important with the globalization of the suppliers’ network.

3D laser scanning  or « digitizing » is  a technology that captures the geometry of existing physical objects  through the use  of digitizing machines or laser scanners. KREON's scanning technology is based on triangulation. The laser triangulation principle is based on the computing of the distance to the object by means of a directional laser source and a video camera. The laser source creates  a laser line on the object which is filmed by one or two cameras.

The speed and accuracy of KREON 3D scanners make them the ideal tool for scanning of complex parts of small or large diameter.

The scanners enable a considerable gain of time in many phases of the manufacturing process . First of all, up the line, they are the link between the manual design and the digital model.

During the adjustment of both parts and tools they consistently apply the modifications trade.

Finally, in Production, they enable to check the conformity of the part according to the digital model.

It is in response to that  industry need for high quality, cost-effective  measurement solutions  that KREON was created more than a decade ago. KREON TECHNOLOGIES offers complete solutions for quality control,  reverse engineering, and inspection using its patented technology in high speed , non contact 3D laser scanning systems.

Considerably accelerating product development, KREON solutions promote innovation, by increasing competitiveness through the  lowering of your manufacturing costs. They help decrease engineering costs and improve the product’s time to market

Reverse Engineering

NESTech provides integration and services in 3D digitizing technologies associated with laser scan. NESTech integrates the physical & digital world by providing world-class 3D laser scanning services for a variety of customers and industries. These services include:

• Reverse Engineering: create CAD legacy data from master parts
• Conversion of point cloud data (laser scan data) into fully parametric 3D CAD models
• Creation of production quality drawings from the 3D Models
• 3-D shape capture for Computer Aided Engineering Analysis
• Rapid Prototyping Input
• Class "A" Surface Creation
• IGES or STEP file repair - Surface stitching and repair

NESTech scanning solutions is highly effective at producing the dense, clean data from complex machined parts that is required for the reverse engineering of a CAD-compatible surface. NESTech can help get your quality program going with custom, reverse engineering services

We specialize in working with customers who are new to 3D laser scanning and may need extra guidance when applying this exciting new technology. The laser scanners are effective on a range of shapes & surface finishes -- complex parts, shiny and freshly machined parts, mixed surfaces, and contoured shapes.

We provide complete services under one roof apart from reverse engineering of the products,

• VALUE ENGINEERING: Existing products can be value engineered  for performance, looks and cost. NESTech combines its laser scanning, reverse engineering, CAD, CAM and CAE solutions to add value to the existing products of the customers. We can help in the  manufacturing of the component including jigs and fixture design or completely take care of manufacturing of the product.
• INSPECTION ANALYSIS OF REVERSE ENGINEERED PARTS: By super imposing the scan data of the part and the reversed engineered CAD model, we provide complete inspection analysis report of the CAD model which we generated.

COMPACT AND PORTABLE - ONSITE SERVICE

3D NON-CONTACT INSPECTION

NESTech provides development, integration, solutions and services in 3D digitizing technologies associated with laser scan. NESTech integrates the physical & digital world by providing world-class 3D laser scanning services for a variety of customers and industries. These services include:

• Quality Control Inspection of production parts
• First Article Inspection
• Tool and Die Verification
• Industrial Design: capture design studies into CAD database
• 3D Measurement

CAD TO PART COMPARISON

Using our state of the art non contact laser scanning technology and powerful software, production part's scan date (point cloud or polygon data) and existing CAD model are superimposed to find deviations of the produced part from the originally designed CAD model. This method is extremely fast and accurate method to inspect complex parts, during tool qualification stage. We also provide this inspection analysis report along with all our reverse engineering projects to the customer to aid them to quickly validate 3D models created by reverse engineering process.

TOOL AND DIE VERIFICATION

NESTech can provide  comprehensive analysis of feature locations and deviations from a CAD model on complex real world parts/tool/die.

3D MEASUREMENT

We can measure and validate 3D free form surfaces of complex parts, Assembly positions, welding fixtures, checking gauges, structural parts, dies, jigs by way of 3D measurement capability of system and deviation reports given immediately.

EXTREMELY FAST AND ACCURATE RESULTS

Modern manufacturing requires rapid measurement and analysis that can not be done with conventional systems. NESTech solutions and services can provide up to 90% reduction in inspection time and a ten-fold increase in accuracy over conventional techniques.

COMPACT AND PORTABLE - ONSITE SERVICE

Our laser scanning and 3D Inspection / measurement systems are compact and portable, it can be moved to your location to carry out the work.

Laser Scan Facilities

KREON ZEPHYR, the product of a know-how and technology developed through a 10 year experience in 3D non contact laser digitization.

Stemming from the latest technological evolutions in electronics and optics, KREON ZEPHYR is the most precise and fastest non contact laser sensor that can be found on the market.

User-friendly and efficient, this new multipurpose and time-saving laser sensor can be adapted to numerous stages of the manufacturing process.

With its non contact and fast acquiring particularities, by no means comparable to that of a touch probe, the KREON ZEPHYR is the answer to your needs in reverse engineering and inspection in workshop environment, research departments or metrology laboratories.

Fixed on a robotic arm, its handy-size and light-weight allow to digitize in record time all kinds of objects, colors and textures, even in the hardly reachable areas. Equipped with an elective triggering off touch probe, the transition from the (relevé dense) of the sensing point is done naturally and automatically.

Fixed on a three dimension automatic or manual machine, the KREON ZEPHYR becomes the ideal tool for the inspection of sheet steel, plastic or mechanical items. PH 10 compatible (Kreon has the Renishaw certification), it gets closer to traditional metrology while providing a richer extensive quantity of information and an unequalled measuring rapidity

KREON	KZ 50
Points per second	30 000
Minimum point spacing (mm)	0.06
Resolution of Sensor (mm)	0.01
Maximum power (mw)	5
Laser Class	Class II
Weight (g)	<400

CIMCORE 7 AXIS ARTICULATED ARM 3000i

CimCore’s Improved 3000i™ Series portable CMMs now incorporate features that improve operator ergonomics and system performance. The 1.2m 3000i will measure to ± .005 mm in the Single Point Sphere Test. This performance makes 3000i arms well suited for tight-tolerance work in the aerospace, automotive, off-road, agricultural equipment and similar industries. 3000i™ arms are available in 1.2-, 1.8-, 2.4-, 2.8-, 3.0-and 3.6 meter measuring envelopes.

3000i Series arms now ship with the NEW Battery Pack. The Battery Pack is ideal for powering the arm (between 6 and 8 hours under normal conditions) when AC power is not available.

3000i arms provide the following exclusive features and benefits:

• Intelligent quick-change probes that can be changed on-the-fly without tools or re-calibration - a major labor saving feature.
• Infinite rotation of the arm’s principle axis, which helps reach difficult details in the work piece.
• Removable counterbalance that reduces operator fatigue and allows one-handed operation.
• Carbon graphite arms - stronger than steel and dimensionally stable regardless of temperature. Under normal usage the arm tubes have a lifetime warranty.
• Quick-change clamping system that requires no tools and allows for a fast set-up.
• Compact and lightweight design allows the arm to be easily moved from job to job

Service Provided by our Group Company Techaero Components Pvt Ltd

CIMCORE	3000i
Measuring Envelop	2.4 m
Measuring Volume	7 m3
Single Point Sphere Test (A)	±0.015mm
Point Repeatability Test (B)	±00.022mm
Volumetric Length Accuracy (C)	±00.032mm
Arm Weight	7 kg

How do you get from the cameras video array to 3D XYZ world?

Video image: adjustable to keep only suitable data for electronic process: - Laser power (applies to line thickness), - Integration time of cameras (applies to pixels height). - Look Up Table (used as a threshold to eliminate background noise)	Kreon digitization : It is an electronic process, that extracts in real time a point for each video row. The result is a set of points in a system of coordinates (column, row), with subpixel resolution
Kreon camera calibration: Determines the relation between the cameras video array and a real world metric coordinate system (UV). Creating and applying the calibration formulas results in conversion of the sensors video output in to a row of points (sections) belonging to a 2D metric world.	Knowing the position of the scanner device (camera and laser) in relation to the object allows for locating the points of the laser line (section) in 3D space (XYZ). Sections can then be gathered over the entire surface of the object, constituting a points cloud, or more precisely a cloud of point sections.

Kreon's scanning technology is based on triangulation

The angle is selected so that there is sufficient relief and the hidden areas can be efficiently managed. At 0° the camera could not detect the relief, at 90° the relief would be optimum, but the slightest variation would prevent camera from detecting the laser trace.

The laser line belongs to a plane, and the video image is in 2D. Thanks to a "calibration" process, it is possible to translate from "row and column video image" information to "u,v" information that is in a system of 2D metric coordinates.

The dimensions of the captured area depend on geometrical and optical settings (zoom, focal length, etc...)`

How does it work? - STEP BY STEP EXPLAINED.

Source Object	The laser draws a red line on the part.	The video camera records are digitized in real time.
Resulting data is a 3D points set.	The system is moved all around the part. Result is well defined points.	Finally, gathered data from the surface delivers a 3D model.