Part-to-part consistency key to shop's success

Author Kip Hanson
Published
April 04, 2018 - 05:00pm

Dan Olsen never intended to open a machine shop. Not after completing his undergraduate degree in mechanical engineering. Not after he graduated from Northeastern University with an MBA in 2008. Not even when he sold aftermarket marine components—zinc anodes, primarily—something he’d been doing throughout college.

But when prompted by requests from customers for products that their existing manufacturing supply chains were not producing, Olsen made the leap into manufacturing. “I thought, ‘This is ridiculous. Being first to market with these replacement parts is of strategic importance to a company’s success. I can make these parts myself,’” he said. 

Mach Machine Inc., Hudson, Mass., had humble beginnings. Anyone who’s tried to open a machine shop knows that it requires plenty of capital investment. In Olsen’s case, however, he started with a laptop, a 1991 Hamill CNC milling machine—which, at the time, already was considered antiquated—and $10,000 from his savings. He taught himself to develop, read and write G code; machine parts; and build fixtures. “I probably wouldn’t have bought that machine if I’d known any better,” he said. “But it got us off the ground.”



Dan Olsen, president of Mach Machine, started the shop in 2011 with one machine. Mach Machine was one of the first manufacturers in Massachusetts to receive ISO 9001:2015 certification.  Image courtesy of Mach Machine.


His initial goal was to support his marine business. However, it wasn’t long before his customers, including friends, began asking him to make parts for them. That was when Olsen realized he could make a go of it as a manufacturer, and he knew exactly which direction to take. The year was 2011.

“The vision for the business was repeat production work,” Olsen said. “Today, the majority of our business comes from blanket purchase orders, many of them dock-to-stock agreements. It’s that need to deliver high-quality products on a predictable basis that led us to our current equipment mix.”

The shop’s most recent machine tool acquisition was an Okuma MB-5000H horizontal machining center with a 12-pallet flexible manufacturing system (FMS), a surprising sight for a machine shop barely 7 years old. Together with a mix of Haas vertical machining centers, Okuma mill-turn lathes, TIG and MIG welders and a Sodick wire EDM, there’s little that Mach Machine can’t make.

It’s admittedly an eclectic mix but one that Olsen and his team of 12 keep running 24 hours a day, 6 days a week. Mach Machine serves a range of industries, including optics, medical, defense and aerospace. Olsen said each machine serves a purpose, adding that he’s noticed a big improvement to the bottom line since acquiring the FMS last year. It runs nonstop.

 “We’re actually about to add another pallet system and probably a second horizontal,” Olsen said. “It’s truly become the heart of our business.”

Olsen said the FMS stabilizes Mach’s ability to ship on time, as well as ensure part quality, consistency and a steady cash flow. He added that there’s no setup time. Now when a customer calls to see if there’s any way the shop can rush an order by the next week, Olsen can tell the customer that it will receive parts the next day and the balance the following week.

“Between tool life management, tool breakage detection, redundant tooling and all of the capabilities advanced manufacturing provides,” Olsen said, “we keep the spindle turning. We have a lot of confidence that we can make even the toughest of parts successfully and unattended. The FMS was a great investment.” 

Olsen has also invested in augmenting his other machine tools. Each CNC lathe is equipped with a bar loader and parts conveyors. When he realized how much time he was losing on his verticals, Olsen designed and built his own vacuum-powered, quick-change pallet system. “It was easily taking us several hours to set up a job, even on repeat work,” he explained. “Now, we literally just change the program, drop the fixture plate in and push ‘cycle start.’ That worked out really well for us.”

The result is that Mach Machine often enjoys 90 percent spindle utilization, especially on the HMC. Olsen’s focus on repeat work means he can run 50 pieces as efficiently as he can run 1,000—without sacrificing parts or wasting time on setup.

“Our mantra is this: Whether it’s the first piece, the 10th or the 10,000th, they need to be exactly the same,” Olsen said. “I don’t want any deviation from lot to lot.” 

He pointed out that the horizontal has helped in that respect. It made his company competitive on price, and the failure rate has dropped to nearly zero. In addition, he doesn’t have nonconforming parts, and there’s no longer a need for setup pieces, scrap allowance or any of the other waste of traditional manufacturing.

“We spend time learning our customers’ parts, optimizing the machining process, reducing cycle times by utilizing advanced tooling technology and being highly aggressive with pricing,” he said. “That’s how we make money.”

For more information about Mach Machine Inc., call (978) 274-5700 or visit www.machmachine.com.

Related Glossary Terms

  • centers

    centers

    Cone-shaped pins that support a workpiece by one or two ends during machining. The centers fit into holes drilled in the workpiece ends. Centers that turn with the workpiece are called “live” centers; those that do not are called “dead” centers.

  • computer numerical control ( CNC)

    computer numerical control ( CNC)

    Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.

  • electrical-discharge machining ( EDM)

    electrical-discharge machining ( EDM)

    Process that vaporizes conductive materials by controlled application of pulsed electrical current that flows between a workpiece and electrode (tool) in a dielectric fluid. Permits machining shapes to tight accuracies without the internal stresses conventional machining often generates. Useful in diemaking.

  • fixture

    fixture

    Device, often made in-house, that holds a specific workpiece. See jig; modular fixturing.

  • flexible manufacturing system ( FMS)

    flexible manufacturing system ( FMS)

    Automated manufacturing system designed to machine a variety of similar parts. System is designed to minimize production changeover time. Computers link machine tools with the workhandling system and peripherals. Also associated with machine tools grouped in cells for efficient production. See cell manufacturing.

  • flexible manufacturing system ( FMS)2

    flexible manufacturing system ( FMS)

    Automated manufacturing system designed to machine a variety of similar parts. System is designed to minimize production changeover time. Computers link machine tools with the workhandling system and peripherals. Also associated with machine tools grouped in cells for efficient production. See cell manufacturing.

  • gang cutting ( milling)

    gang cutting ( milling)

    Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.

  • lathe

    lathe

    Turning machine capable of sawing, milling, grinding, gear-cutting, drilling, reaming, boring, threading, facing, chamfering, grooving, knurling, spinning, parting, necking, taper-cutting, and cam- and eccentric-cutting, as well as step- and straight-turning. Comes in a variety of forms, ranging from manual to semiautomatic to fully automatic, with major types being engine lathes, turning and contouring lathes, turret lathes and numerical-control lathes. The engine lathe consists of a headstock and spindle, tailstock, bed, carriage (complete with apron) and cross slides. Features include gear- (speed) and feed-selector levers, toolpost, compound rest, lead screw and reversing lead screw, threading dial and rapid-traverse lever. Special lathe types include through-the-spindle, camshaft and crankshaft, brake drum and rotor, spinning and gun-barrel machines. Toolroom and bench lathes are used for precision work; the former for tool-and-die work and similar tasks, the latter for small workpieces (instruments, watches), normally without a power feed. Models are typically designated according to their “swing,” or the largest-diameter workpiece that can be rotated; bed length, or the distance between centers; and horsepower generated. See turning machine.

  • machining center

    machining center

    CNC machine tool capable of drilling, reaming, tapping, milling and boring. Normally comes with an automatic toolchanger. See automatic toolchanger.

  • milling

    milling

    Machining operation in which metal or other material is removed by applying power to a rotating cutter. In vertical milling, the cutting tool is mounted vertically on the spindle. In horizontal milling, the cutting tool is mounted horizontally, either directly on the spindle or on an arbor. Horizontal milling is further broken down into conventional milling, where the cutter rotates opposite the direction of feed, or “up” into the workpiece; and climb milling, where the cutter rotates in the direction of feed, or “down” into the workpiece. Milling operations include plane or surface milling, endmilling, facemilling, angle milling, form milling and profiling.

  • turning

    turning

    Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.

  • wire EDM

    wire EDM

    Process similar to ram electrical-discharge machining except a small-diameter copper or brass wire is used as a traveling electrode. Usually used in conjunction with a CNC and only works when a part is to be cut completely through. A common analogy is wire electrical-discharge machining is like an ultraprecise, electrical, contour-sawing operation.

Author

Contributing Editor
520-548-7328

Kip Hanson is a contributing editor for Cutting Tool Engineering magazine. Contact him by phone at (520) 548-7328 or via e-mail at kip@kahmco.net.