Motor Cnc
Vertical Machining Centre Evolution by Alanis Smithy
Long gone are the days of winding the handles on a BRJ Milling Machine and praying that the finishing cut was 1mm and not 10mm – I’m sure many of you reading this will recall that quivering experience! Now with the introduction into the market-place of the Vertical Machining Centre (VMC), a lot of the skill and possibly the ‘art’ too have disappeared.
Interestingly the VMC is the best selling Machine Tool around the world; it’s certainly come a long way in just 25 years. 2010 sales figures suggest there were over 10k Machining Centre purchases in the UK alone: equating to almost one per machine shop.
Casting my mind back to the 1980s, I can well remember when the cycle time (complete process time) of a mould tool 500mm x 500mm would have been 2 days. Now step forward to 2010 and on a high speed VMC you would reasonably expect to see a finished part within 2 hours: that’s a staggering 90% cycle time reduction in 30 years. This simple logistic graphically highlights how impossible it would be in the modern day to compete using machinery from way-back-when. It’s highly likely that this fact alone explains the incredible volume of VMC sales.
Another topic that warrants detailed consideration is, when considering the purchase of a Machining Centre in 2011 – which machine tool is the best buy? With the explosion of Milling Machining Centre sales over the last couple of decades, dozens of manufacturers have turned their hand to designing their own product with the intention of capitalising on the booming market. To date there are over 200 brands of VMC available throughout the manufacturing world, making the decision process somewhat convoluted and often very difficult for engineers in the UK. Whilst we’re not about to tell engineers which device to invest their money in, we’re more than happy to comment on some of the differentiators that ought to be evaluated.
One of the major differences in Machining Centre specification is obviously in their build quality. Some Machine Tools have a cast foundation whilst others are simply fabricated. Fabrications are made which can often lead to potential areas of weakness, whereas castings are cast and are one piece, providing a more stable machining environment.
A second key differentiator is in the spindle speed. Machining Centres can be equipped with integrated spindle motors delivering speeds of up to 40k rpm. Alternatively, some machine types are built with belt-driven spindles that do not deliver the same machining results as an integrated type.
Tool-changing capacity is a third focal point. Machining Centres can be manufactured with tool-changers offering from 10 pocket-stations up to 200 pocket-stations. A pocket is effectively a tool station and holds one tool-holder. One of the major benefits of buying a Machining Centre or a Milling Machine with a greater number of tool-pockets is a reduction in the necessity for manual intervention on the machine. If you can position all the tools you need for all your component parts in the machine, the time consuming job of entering the machine to change or add tools is eradicated.
Finally two other important considerations are the control and the size (capacity). The control drives the machine; it’s the brain and its computer will determine how quickly and accurately the machine will cut. In today’s market most manufacturers add either their own control system or a hybrid such as a Fanuc or Heidenhain. It’s crucial to make sure any Machining Centre purchase has a control with sufficient power and capability to machine your parts. You can often test this with the manufacturer before buying – by requesting a cutting trial.
Then there’s the size; Machining Centres are now available with 500mm X axis travels, right up to 10 metres. Machine size is normally at the top of any list of specifications. Let’s face it, there’s little point in buying a machine with a 10 metre travel when your core parts are no bigger than your fingernail.
But posing the above questions to potential suppliers will certainly help with the decision making process. By filtering out many of the solutions that just aren’t right for you at an early stage, it’ll help you to focus on the ones that are right for your needs. All-in-all it’s never easy when you’re charged with potentially investing tens of thousands of pounds of company money in improving your CNC Milling capacity, especially as this market is ever-changing and more brands become available at potentially better prices. What you can be sure of, however, is that all Machining Centres will improve your manufacturing throughput.
About the Author
In summary, buying a Machining Centre in the 21st century is no longer a nice-to-have that puts your business ahead of your competition: it’s a must-have in any machine shop that wants to be competitive. Milling as we knew it has evolved into CNC Milling; it’s fast and furious and great for metal removal and accurate component manufacture. Cycle times that used to be 30 minutes are now often less than 5 minutes and still reducing thanks to the technology and the users. Let’s not take anything away from the engineers who programme Machining Centres; they’re the guinea pigs who often develop their own programming techniques that manufacturers then incorporate into new models. It’s a manufacturing collective ‘the machining centre evolution’.
3 & 4 axis Hobby CNC Stepper Motor Driver Boards
|
|
Porter-Cable 7310 5.6 Amp 3/4-Horsepower Laminate Trim Router $164.00 The perfect tool for most trimming, edge-forming, and hinge-routing jobs, the Porter-Cable Trim Router is ideal for professionals. Comfortable to handle and easy to hold with just one hand, this router gives you the control and precision you need to make quick, accurate cuts.7310 Trim RouterAt a Glance:Durable trim router with heavy-duty 5.6 amp motorMicro-set adjustment knob for quick and easy de… |
|
|
Proxxon 38481 IB/E Professional Rotary Tool $120.25 Featuring a variable-speed motor and a stabilizing, ball-bearing assembly, the Proxxon IB/E Professional Rotary Tool is ideal for a wide range of hobbies and professional projects. Lightweight, quiet, and capable of high torque even at low speeds, this well-balanced rotary tool includes 34 accessories that can be used for grinding, polishing, engraving, and more. The IB/E ProfessionalRotary Tool O… |
|
|
DEWALT DW660SK 5-Amp 30,000 RPM Rotary Cut-Out Tool with 1/8-Inch and 1/4-Inch Collets, Side Handle, and Circle Cutter $89.11 In recent years, rotary cutout tools have soared in popularity, due mainly to a series of television infomercials promoting one brand. Though it doesn’t receive the TV airplay of its main competitor, this DeWalt model uses a durable 5 amp motor–the most powerful motor yet in a cutout tool–making it a great tool for professional drywallers, electricians, and carpenters. To help battle dust infilt… |
|
|
10mm CNC Motorcycle Mirror Riser Extender – Black – Right Hand Bolt and Mirror Mount Honda CBR 600 900 929 954 1000 RR, Kawasaki Ninja ZXR, Suzuki GSXR 600 750 1000 Bandit SV650, Yamaha R6 R1 $7.95 1 Motorcycle Mirror Riser RH Threads, RH Bolt We combine shipping for you if you need more than one Riser Note: Some Motorcycles have Standard Right Hand Threads (RH) Some have Reverse Left Hand Threads (LH), Some have one RH and one LH Threaded Mirror. This Riser has RH Threads (Standard) & RH Bolt (Standard) For other Risers see my Amazon Fits Motorcycles with 10mm Mirrors Fits most Cruisers an… |
|
|
PowerBass 3XL-101D 1500 Watt 10 Inch High Performance 1 Ohm Car Subwoofer $119.88 This is a PowerBass 3XL-101D high-performance 1500 watt 10 inch car audio subwoofer. Featuring a dual 1-ohm, 3″ inch voice-coil this class “D” professional subwoofer can pound out an amazing 1500 watts total power (750 watts RMS). Also featured, are large pro-lock terminals. These terminals enable you to wire this powerful sub with large gauge cables into a 1-ohm load. The non-pressed raw pulp con… |
|
|
Durable CNC Aluminum Handle Bar Handlebar Hand Grips For Honda CBR 600 F3 F4i 600RR 929 954 1000 RR 1000RR Shadow 600 750 1100 VTX 1300 1800 Goldwing Gold Wing GL 1200 1500 1800 $17.99 This listing is for Brand New Motorcylce ATV Hand Grips!Package includes one couple of Handlebar grips with Heavy duty brushed aluminum ends and bar end capsSize: left(bar side) hole: 22mm (7/8″); right(throttle side) hole:25mm (1″) Overall Length: 14.3cm (5 5/8″)Color: Silver-BlackMade of Durable PVC Gel rubber & CNC machined AluminumNon slip design, provides smooth throttle tuning and better con… |
|
|
E-Toysworld Z008 4-Ch Mini Infrared Rc Heli With Gyro $24.75 Great new RC mini Heli. Very stable bar and Gyroscope, fun color and good battery life makes this a ‘just right’ RC Heli…. |
|
|
New!! 2.4Ghz Dynam E-Razor 250 Pro Ready-to-Fly w/ CNC Upgraded Rotor Head, Brushless Motor+ESC, LiPo Battery … |
|
|
Steel Frame 3-Channel RTF Radio Controlled RC Helicopter $16.39 Amazing Technology in the palm of your hand!!! Phantom 6010 mini RC helicopter equipped with Aluminum Frame and a great detail canopy. Features & Specifications It is a Serious Toy for Adults and Kids. This palm size RC Toy Helicopter comes with light weight Aluminum Frame and a Great detail canopy with LED Lighting, it doesn’t look like a toy, but a very serious Helicopter. Specification: – Main … |
|
|
Seeing more for CNC multi-spindles: motor technology, machine design and software possibilities all improve the economies of these sophisticated … An article from: Modern Machine Shop $9.95 This digital document is an article from Modern Machine Shop, published by Thomson Gale on December 1, 2006. The length of the article is 1284 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.Citation DetailsTitle: Seeing… |