80% of the time during a machining cycle, all the aspects [spindles and turret doing turning, milling drilling and tapping] of the machine are working,” said Carter. For propeller assembly hubs, Hartzell’s recently acquired
Quick Turn Nexus 400-II turning center provides much needed positioning accuracy, speed and power to improve output. The machine performs rough boring, turning and facing operations, as well as hard turning after a heat-treating process. The steel hubs, on which propellers are mounted, are challenging. Certain angle locations must be held in rela- tion to other part features, and the sequence of operations must be completed in a specific order—three prior to heat treating, then afterwards four finishing ones. Continuous improvement is critical to Hartzell’s part processing operations. As part of that strategy, the shop is currently incorporating the MTConnect common protocol to monitor machine uptime and cell output. In fact, the shop’s newer Mazaks came from the factory already equipped with
Composite blade shanks used to require multiple machine processing, but are now done complete in Hartzell’s Mazak In- tegrex i-200ST. Blade shanks are stainless steel castings; some are aluminum and titanium. The part goes from a raw casting weight of 14 lb (6.35 kg) to one weighing 5 lb (2.7 kg).
the capability (as is the case with all Mazaks). And with its older equipment, Hartzell has completed retrofitting them for the protocol as well.
“Consider a three-machine cell, and the question arises of whether or not to add a fourth machine,” said Barhorst. “In
In aerospace. Part — aircraft engine component Tool— MTSH HARDCUT Mini Mill-Thread Material— Inconel Result— Went from three holes per part to 122 without breakage or rework.
In energy. Part— oil field pump component Material— 4140 steel Tool— H63-9 Spiral Mill-Thread nine flute shell mill
Result— 75% savings in cycle time.
In medical. Part— dental implant Material— Ti6AL4V ELI Tool— SRW Thread Whirling tools
For TREME results
www.carmexusa.com •
sales@carmexusa.com in your thread cutting applications,
contact us today. 888-628-5030
Result— Obtained high precision thread and finish in targeted cycle time.
In fluid power. Part— pump component Material— 300 Series stainless steel Tool— CMT –Vertical Mill-Thread Result— 3x tool life with 66% reduction in cycle time vs. single point insert.
March 2014 |
ManufacturingEngineeringMedia.com 51
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148