https://cdn.mtdcnc.global/cnc/wp-content/uploads/2021/07/08122715/Two-of-the-FANUC-5-axis-machining-centres-at-RG-Precision-640x360.jpg
    Machining

    Compact 5-axis proves a hit

    • By MTDCNC
    • July 13, 2021
    • 3 minute read

    From its humble beginnings in 1974 with a small manual lathe, R&G Precision Engineering Ltd has evolved beyond comprehension with the Wellingborough based company now having a plant list that includes EDM wire and spark erosion, ultrasonic cleaning, grinding and finishing and of course multi-axis machining. MTD travelled to the Northamptonshire manufacturer to take a look at their latest acquisition.

    In the machining department, R&G Precision has a variety of machine tools on-site that include multi-pallet Matsuura and Brother machining centres, HAAS machining centres and a complete suite of FANUC Robodrill machines. Recently adding its sixth 5-axis FANUC Robodrill machine, a D21MiB5, Philip Barish of R&G Precision Engineering says: “The FANUC machines have been a popular choice because of their versatility. We can do full 5-axis, which means we can do virtually any part in a single hit. There may be some jobs that require two operations, but they can be done in the same machine.”

    With many machine shops investing in large work envelope 5-axis machining centres, MTDCNC asked why R&G Precision opted for the compact FANUC Robodrill. Philip continues: “Because the machine is 5-axis, everything is contained in a small area anyway. Assuming that the component is not much larger than 200mm in diameter, the FANUC Robodrill will fit everything you need. We are not talking about using three vices in a row, you don’t need that. Everything is compacted into a localised machining area.”

    With a table size of 650 by 400mm and travel of 500 by 400 by 330mm in the X, Y and Z-axes, the compact workhorse demonstrates rapid rates of 54m/min with spindle speeds of 10,000 to 24,000rpm, depending upon the model selected. Providing a compact yet spacious work envelope, the Robodrill provides a maximum table load of 300kg with a maximum tool diameter of 80mm in the BBT30 taper spindle that is supplied tools from the 21 position ATC.

    Despite being a compact machining centre, the FANUC Robodrill D21MiB5 demonstrates impressive rigidity characteristics. Highlighting this, Philip says: “We are machining one set of components from 304 stainless steel round bar. The first interim operation essentially rough machines the part with trochoidal milling, which means there is no heavy loading on the cutters. This transfers to the machine not being overworked by using a dynamic cutting operation that completes the part in just 40 minutes.”

    “By using trochoidal milling, we can really up the ante on our machining speeds and feeds. We only have to pull back slightly on the speeds and feeds if we’re doing something like deep hole drilling. The FANUC machines are capable of doing the most difficult jobs. On another FANUC machine, we are machining complex brass components all day long.”

    Highlighting the performance and reliability of the FANUC machines, Philip concludes: “In all the years that I have been using the machines, they have never missed a beat. For anyone thinking about purchasing a large machining centre for machining exotic materials, they probably need to change their thinking. The way we machine things isn’t the same as how we machined parts 10 years ago – and that is where the FANUC Robodrill comes into its own in my opinion.”

    https://cdn.mtdcnc.global/cnc/wp-content/uploads/2021/07/08122715/Two-of-the-FANUC-5-axis-machining-centres-at-RG-Precision-640x360.jpg

    Compact 5-axis proves a hit

    From its humble beginnings in 1974 with a small manual lathe, R&G Precision Engineering Ltd has evolved beyond comprehension with the Wellingborough based company now having a plant list that includes EDM wire and spark erosion, ultrasonic cleaning, grinding and finishing and of course multi-axis machining. MTD travelled to the Northamptonshire manufacturer to take a look at their latest acquisition.

    In the machining department, R&G Precision has a variety of machine tools on-site that include multi-pallet Matsuura and Brother machining centres, HAAS machining centres and a complete suite of FANUC Robodrill machines. Recently adding its sixth 5-axis FANUC Robodrill machine, a D21MiB5, Philip Barish of R&G Precision Engineering says: “The FANUC machines have been a popular choice because of their versatility. We can do full 5-axis, which means we can do virtually any part in a single hit. There may be some jobs that require two operations, but they can be done in the same machine.”

    With many machine shops investing in large work envelope 5-axis machining centres, MTDCNC asked why R&G Precision opted for the compact FANUC Robodrill. Philip continues: “Because the machine is 5-axis, everything is contained in a small area anyway. Assuming that the component is not much larger than 200mm in diameter, the FANUC Robodrill will fit everything you need. We are not talking about using three vices in a row, you don’t need that. Everything is compacted into a localised machining area.”

    With a table size of 650 by 400mm and travel of 500 by 400 by 330mm in the X, Y and Z-axes, the compact workhorse demonstrates rapid rates of 54m/min with spindle speeds of 10,000 to 24,000rpm, depending upon the model selected. Providing a compact yet spacious work envelope, the Robodrill provides a maximum table load of 300kg with a maximum tool diameter of 80mm in the BBT30 taper spindle that is supplied tools from the 21 position ATC.

    Despite being a compact machining centre, the FANUC Robodrill D21MiB5 demonstrates impressive rigidity characteristics. Highlighting this, Philip says: “We are machining one set of components from 304 stainless steel round bar. The first interim operation essentially rough machines the part with trochoidal milling, which means there is no heavy loading on the cutters. This transfers to the machine not being overworked by using a dynamic cutting operation that completes the part in just 40 minutes.”

    “By using trochoidal milling, we can really up the ante on our machining speeds and feeds. We only have to pull back slightly on the speeds and feeds if we’re doing something like deep hole drilling. The FANUC machines are capable of doing the most difficult jobs. On another FANUC machine, we are machining complex brass components all day long.”

    Highlighting the performance and reliability of the FANUC machines, Philip concludes: “In all the years that I have been using the machines, they have never missed a beat. For anyone thinking about purchasing a large machining centre for machining exotic materials, they probably need to change their thinking. The way we machine things isn’t the same as how we machined parts 10 years ago – and that is where the FANUC Robodrill comes into its own in my opinion.”