Page 108 - 20200313

G LOBAL OUTLOOK
環球瞭望（wàng） 雖（suī）然（rán）通常有時間為規則的改變做準備，但 was how his predecessor at Andretti had viewed
Charlie Mitchell 先生解釋說，其他的改變並不總 them: production equipment. Mr. Mitchell thought
是那麽容易預測（cè）的。有這麽多的團隊和他們需要 otherwise.
處理的問題，零部件優先順序可（kě）以（yǐ）在幾分鍾內（nèi）改
Reducing Setup Times for Faster Turnaround
變。在此之前，如果一個工程師提出（chū）緊急要求，
While some people see the Unilock system
那就是 “排隊”。但現在，有了 30 種工具庫和
as useful for cutting multiple parts on horizontal
Unilock 係統的結（jié）合（hé），Charlie Mitchell 先（xiān）生可以 machines, Mr. Mitchell saw their benefit for use
迅速適應不（bú）同的需求。
on his vertical five-axis machining centers. “I knew
you could utilize the Unilock pallets to really turn a
【英文如下】
shop into a fast-paced operation,” he says.
Charlie Mitchell, machinist for Andretti
Specifically, Mr. Mitchell saw an opportunity
Autosport, has described the race shop thus:
“It’s like a job shop—like a prototype shop—but to consolidate a time-consuming part of setup:
the handling of an array of fixtures like the vises,
faster.”
three-jaw chucks and 5C collets that had to be
Actual machining accounts for just a bolted on the tables of his five-axis DMG MORI
fraction of the time involved with a part moving DMU 50 and three-axis CMX 1100 V machines
from concept to reality. Design, engineering, with T slots, studs and nuts. This required fully
programming and setting up a job consume the disassembling multiple components from the
bulk of Mr. Mitchell’s workday. This does not table, including finding the right studs or nuts and
include the time it takes the design engineers to tramming the part before indicating it all back in
diagnose the need for a new part on a car after a the machine. The full process took a couple hours.
race weekend and prescribe a part for the fix or
Unilock’s clamping system uses spring
upgrade. By the time the job gets to him, time is pressure or manual actuation to clamp knobs in
already short.
fixed locationss for rapid unloading, loading and
Andretti Autosport encompasses multiple locating of fixtures and workpieces. Standard
drivers across five different racing platforms that knobs can be clamped and mounted in a blind
span the globe. Their races will not be delayed if locations hole from the bottom or fastened from
one of Mr. Mitchell’s parts is not ready. “Whether the top of a fixture.
the car is going up to North Carolina for a wind
“Because my fixtures are all bolted onto
tunnel test, or it’s going to Iowa for a road course the Unilock pallets, in less than five minutes I can
test, it costs hundreds of thousands of dollars to
send people there on the company plane. I can’t throw the air switch, pull a pallet off the machine,
drop another on, throw the switch again, and it’s
say, ‘I’m not going to get that part for you in
time.’ I have to hit that mark,” he says. When Mr. ready to go,” Mr. Mitchell explains. “I don't have
Mitchell started at Andretti in 2016, he discovered to bolt the fixture in. I don't have to indicate it in.
I've already done that when I set up each pallet.”
an opportunity that would make hitting that
turnaround mark easier. In fact, it was collecting Mr. Mitchell says that before the use of the
dust in the back of the shop: several zero-point pallets, it could take as many as eight hours to set
Unilock dual-receiver pallets from BIG KAISER. He up his five-axis machine with 10 tools to run 30
had used the system before at a medical device to 40 different processes on a part. Now, he says
company in a production environment; and that setup times are 70 to 80 percent shorter. ·90· 第02期 數控機床市場