Specialists in Engineering Metrology

We offer a comprehensive and Independent on-site service for the Calibration and assessment of machine tools. Our highly skilled calibration engineers can perform error assessment and where appropriate apply software error compensation to machine tools. Customers from small Tool Makers to large scale Aerospace and Automotive manufacturers appreciate our commitment to quality and our continued endeavour to offer our best service at competitive cost, together with willingness and flexibility in accommodating their needs, even outside normal working hours thereby alleviating lost production. We cover the whole of the UK, EU and other countries by special request, where we work alongside our customers’ maintenance staff. Our considerable experience in the calibration and compensation fields enables us to offer, not only the basic requirements for reliable production, but also in-depth assessment of all aspects of machine tool and CMM performance. The combination of experience, extensive range of equipment and unique software, enable us to carry on where others leave off.

Complete Measurement Service - We can measure linear and rotary positioning (e.g. rotary tables, tilt heads) as well as straightness, squareness and angular motion (roll, pitch, yaw) of linear axes. All equipment used is calibrated and traceable to National Standard, C.D. Measurements are UKAS accredited for Linear distance and Angular measurements as well as Rotary measurement including indexing tables.

Minimum Down Time - In most cases the linear positioning accuracy of a basic three axis-machining centre can be checked, software pitch error compensation applied and calibrated in a single shift, using laser interferometers. Five axis machines can usually be completed in two shifts using interferomtery for linear axes and collimators and polygons for the rotary axis. Our right first time error compensation is achieved by the application of our proprietary 'Calsure' software and hardware systems which require a minimum of human intervention reducing the chances of human error. These benefits can also be applied to rotary axes, such as indexing tables and five axis heads, which can be assessed error compensated and calibrated using polygon and laser collimator interfaced directly to our proprietary software. Pointing lasers can be used to align or check the alignment of machines, machine foundations and a like.

Sub-Micron Uncertainty - Our best measurement capability of 0.15µm + 0.5µm/m for lengths up to 4m and 1.9µm/m for axes up to 80m is the best available in the UK.

Linear axes before compensation

Linear axes after compensation

Reports and Certification - measurement results can be assessed to a wide variety of national and international standards such as ISO 230, JIS, VDI3441 with Reports and Certification supplied in either hardcopy or electronically in PDF format. Our UKAS accreditation for linear and rotary measurements gives our customers internationally recognised certificates of calibration. These reports will fit into ISO 9000 quality systems and give customers piece of mind that your machines can perform as required and can be vital for obtaining work with large multinational companies.

Ball Bar - Contouring Assessment - Using our patented 'Contisure' Ball Bar system we can assess machine profiling performance at circular radii from 0.1mm up to 1000mm. Ball Bar tests can provide conditioning monitoring of machine tools, which is vital for reliable production. The Contouring check not only assess the ability of a machine tool to perform Circular Interpolation but also can be used for quick diagnostic checks of machines. Results can be assessed and presented to ISO 230-4 with diagnostic information also being supplied. The Contisure software and hardware is also available for purchase, to allow our customers to check there own machines on a regular basis.

Flatness Assessment - Application of our 'Surfsure' Flatness calibration software flatness of surface tables machine beds and ways can be assessed. Flatness can be assessed to the Union Jack or Grid methods with results assessed to BS 817, ISO 8512-2 or DIN 876.

Volumetric Error Mapping - Error Mapping for Machine Tools and CMMs can be performed using our 'VEA' software. Basic errors such as Positioning, Straightness, Squareness, Roll, Pitch, and Yaw can be combined to predict the error of a machine at any point as well as Direct measurements of Machine diagonals as specified in ISO 230-6.

Safe Working - As part of our commitment to safe working all our on-site engineers have an up to date CCNSG safety passport. The Client Contractor National Safety Group (CCNSG) training courses cover a wide range of industrial and construction site safety issues, procedures and practices. These safety courses along with extensive industrial experience enable our engineers to implement safe systems of work on your site while performing machine tool calibrations.  

Document		Notes
UKAS Schedule		Description of UKAS accreditations and associated uncertainty of measurement. (PDF Format 20 Kb.)
UKAS Don't Risk it		Introductory guide to explain how risk can be minimised by using UKAS accredited laboratory for calibration and testing. (PDF Format 1.3 Mb.)
Onsite Services Brochure		Introduction to our onsite Machine Tool and CMM calibration services. (PDF Format 437 Kb.)

	An Unzip program and Adobe AcrobatV5 or higher  are required to view C D Measurements electronic certificates. Click on the icons for links to the free download sites

C. D. Measurements Ltd., Chomlea House, Hadfield Road, Hadfield, Glossop, SK13 2ER, U.K.

Tel. 01457 852929 Fax. 01457 860619

Email : calibration@cdmeasurements.com

All Trade Marks Acknowledged