SUBCONTRACTING DEEP HOLE DRILLING < Experience makes the difference
Accredited to the AS9100 aerospace quality standard and an SC21 Bronze level award company since August 2010, Hone-All Precision reports that aerospace continues to be a growth area for the
Leighton Buzzard-based subcontractor. “It is a highly competitive market sector but our experience as a tier two supplier in other equally demanding industries such as oil and gas and motorsport
has proved invaluable,” says director Andrea Rodney. The company’s most recent
investment has been in two Sunnen horizontal tube honing machines, ideally suited to tube honing applications requiring high stock removal rates on
Subcon Drilling Limited Subcontract Capacity
Gun Drilling 3-40mm diameter holes up to 5000mm deep. Tolerance - diameter 0.05mm accuracy. Honing 3-70mm diameter holes up to 1000mm deep. Tolerance - diameter 0.01mm accuracy Superfinishing – full capability. CNC Turning, CNC Machining.
Standards/Approvals
ISO 9001:2000, Approved Messier-Dowty Supplier, Martin Baker, Cosworth, Claverham.
Factory & Employees Purpose built 20,000 Sq feet factory.
F1, Medical, Oil & Gas, Aerospace, General Engineering. Sectors Supplied
Company contact details
Subcon Drilling, Unit 6 Heron Business Park, Eastman Way, Hemel Hempstead. HP2 7FW. Tel: 01442 205960 Web:
www.subcondrilling.co.uk Contact: Dean Edwards:
dean@subcondrilling.co.uk
Southern Gundrilling Services Ltd Subcontract Capacity
Gun Drilling from 3mm Dia to 40mm Dia up to a maximum of 3m in length
Deep Hole Drilling to a maximum of 40.00mm Dia to lengths of 750mm
Capability drilled cylindrical PCD components are the norm for SGS Ltd
Honing from 1.5mm Dia to 300mm Dia in length up to 2m in length
Materials ferrous, nonferrous, plastics, in fact the whole spectrum
Standard/Approvals ISO 9001:2001
Sectors Supplied
Aerospace – Defence, Medical, Oil-Gas, Food-Packaging, Motor Sport, Toolmaking-Plastic Mould, Hydraulic
Company Contact Details Southern Gundrilling Services Ltd Old Brickyard Road, Sandleheath Industrial Estate Sandleheath, Fordingbridge, Hants SP6 1PA Contact Tony Harris Tel: 01425 655001 Fax: 01425 655722 Email:
enquiries@drillandhone.com Web:
www.drillandhone.com
56 Production Engineering Solutions • January 2012
larger diameter components. However, although specialising in deep hole boring, deep hole drilling/gun drilling and honing, Hone- All Precision has invested in the complete spectrum of precision machining. “This takes in everything,” says managing director, Colin Rodney, “from sourcing raw materials right the way through to fully machined components.” It is Hone-All Precision’s
experience of producing high length-to-diameter ratio holes, often in difficult to machine materials such as Inconel and Hastelloy, while guaranteeing excellent surface finish and straightness characteristics, that continues to be the key to progress. In terms of hole drilling this equates to a surface finish of 0.8µm/32CLA and a total run out (TIR) of 0.025mm/25.4mm, while the typical surface finish for honing is 0.05µm. Components requiring
deep hole drilling up to 20mm diameter include con rods, drive shafts, steering columns, electronic housings, injection mould tools, prosthetics, rotors, actuators and landing gear. For holes greater than 20mm diameter the alternative is deep hole boring. A particular example of Hone-All Precision’s expertise is its capability in terms of gun
drilling deep holes in different positions and at different angles in a single set-up. This avoids the introduction of cumulative dimensional errors through multiple machine set- ups as well as eliminating the risk of drill breakage resulting from the drill ‘catching’ at a point of intersection between holes. “This is where we save our customers both time and money,” says Mrs Rodney, “and where experience gained over more than three decades really does make a difference. “In fact, it was experience
that counted recently when an in-house candidate with several years’ service in the deep hole boring section asked to be considered on equal terms for the position of quality engineer/inspector. This role has been created in response to the increasing complexity of machined components and the resulting need for additional capability in our QC department. Having outperformed several external applicants with his in-depth knowledge of engineering he has now started in his new role, reflecting our ongoing commitment to training and career progression from within.”
> HONE-ALL
PRECISION
www.hone-all.co.uk
www.pesmag.com Visit our website
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