Suitable Batch Quantities for CNC turning

What is a suitable batch quantity for our machine shop?
Typical batch quantities in our machine shop are 100, 200, 300, 500, 1000,1500, 2000, 3000, 4000, 5000.
We do not normally find that we manufacture in quantities above those shown because CNC machine tools are not cost effective in this range.

What is the smallest quantity we will manufacture?
We often manufacture quantities from 50 upwards although we will manufacture smaller batches under the following circumstances. We are prepared to supply in quantities as low as 10 off if the requirement is part of an annual call off where the setting up cost can be amortised over the total batch and order cover is given for the complete batch.

Typical Lead Time

What is a typical lead time from receipt of order to delivery?
We normally quote 3-4 weeks but this can be increased if our machine shop is busy, but not normally longer than 5-6 weeks. Also if a quicker delivery was required we would endeavour to meet that requirement or at least offer our best possible date.

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Typical Materials

What materials do we have most experience in machining?
We are most proficient in the turning of the following materials:

Delivery to Schedule Requirements

How do we perform as a company?
D.R.N.Engineering has an excellent reputation for delivery goods on time in accordance with order requirements. It is company policy to only quote achievable delivery dates to ensure that our customers come back to us time and time again. Some of our customers have been with us since we started 22 years ago.

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Quality Approvals

What Quality Approvals do we have?
We are 1S09001 approved and are audited regularly by BSI to ensure that we are keeping our production control systems and documentation up to date. We are also willing to incorporate any special requirements that you may have such as SPC inspection on critical dimensions. You are welcome to visit our factory and to see for yourself the excellent system that we operate.

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What Are The Limitations Of Our CNC Machine Shop

What range of Turned Components can we accommodate on our CNC Lathes?
The Star CNC Sliding Head machines we operate are ideal for small diameter components from 3mm diameter up to 2Omm diameter. We also have facilities on these machines to turn complicated components using the Sub-Spindle and Driven Tooling which can drill and tap cross-holes while the job is still in situ on the lathe and therefore achieve a time cycle saving which is passed on to the customer. All these lathes are fitted with Magazine bar loading capability which gives us the added advantage of being able to run these machines unmanned over night.

The Miyano range of Lathes, our most extensive type of machine, offer a wide range of choice to accommodate many different components to ensure we get the right machine for each job and thereby give the most cost effective price to the customer. In this range we again have the Driven Tooling and Sub-Spindle capability offering the same advantages as described in the previous paragraph, however this machine is different because it can accommodate up to 34mm diameter.
Another type of Miyano machine offers a twin turret capability which means that any component with a hole in it can be manufactured faster on this machine by over lapping the drilling and outside turning cycles which represents a time cycle saving.  The maximum diameter we can machine in this particular type of CNC lathe is 48mm diameter for components manufactured from bar. We also have the option to use a chuck on this machine and therefore turn components from 48mm up to 200 mm diameter. All these lathes are fitted with Magazine bar loading capability which gives us the added advantage of being able to run these machines unmanned overnight.

The Hitachi-Seiki CNC lathe can accommodate the largest bar diameter of 65mm through the spindle and also has a magazine bar loader as described in previous paragraphs. This machine is also ideal for turning larger diameter work in the chuck up to 2OOmm diameter and at optimum speeds and feeds.

Our milling and drilling capability from our Miyano TSV's and Kitamura are solely used to complete second operation work on the turned components we manufacture on the lathes. We have two CNC dividing-heads on two of the machines which means we can drill & tap or mill on the periphery of a component. Sometimes it is more cost effective to carry out the second operation work on the mills when compared to completing the machining on a Sub-Spindle lathe.

Finally we would welcome you to come and visit our factory and to see for yourself the extensive range of  CNC turned components we can manufacture in our CNC facility.

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D.R.N. ENGINEERING LTD.
Trojan Court, Laporte Way, Luton, Bedfordshire. LU4 8RN England
Tel: 01582 451111,  Fax: 01582 418544, 
email: sales@drn.co.uk