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Some people thought the import numerical control
equipment is easy to use not not well repairs, this mainly is to its
characteristic knew insufficient creates. Wants Uygur to fix the
import numerical control equipment, should first know its
characteristic, launches the service mentality in view of these
characteristics, to is accurate, fast the diagnosis has a benefit.
First, surely do not have blindly to blindly believe in the
import numerical control equipment the quality
The import numerical control equipment mostly is now the
most front science and technology application product, but because the
factory hastily starts, does not have the enough effectiveness for a
period of time test, unavoidably has the design, the manufacture not
not perfectly place. Cylinder hole buys into which from German
GEHRING Corporation 珩磨 machine, uses the advanced numerical
control hydraulic pressure servo technology, has solved well to the
net grain angle, the depth, the cylinder hole diameter and the column
closed-loop control. This company is enjoys a good reputation
the world the well-known company, it newly opened sends out the laser
珩磨 technology is running quickly the automotive factory
experiment, it is reported is extremely successful. But is the
equipment which this kind of well-known company produces, after uses
for more than a year, frequently has the movement sudden stop, the
equipment which is bewildered stops and so on the breakdown.
After sometimes restarts restores normally, sometimes must many
times only then be repeatedly normal, sometimes continuously period of
time do not have the question, sometimes actually continuously has the
problem. Reports to the police the information to demonstrate
"SYSTEM COMMUNICATION" the system communication breakdown.
This kind of phenomenon general name does "软故?. At
first the suspicion is the electrical network noise, the harmonic
interference is the result of, then has carried on the examination to
the electrical network quality. The examination reports the
demonstration that, the electrical network overtone exceeds the
allowed figure, suggested filters. In the ordinary
circumstances, the electrical network overtone quality mostly exceeds
the allowed figure. The electrical network disturbance merely is
the external factor, the system overall resistance to interference is
the internal cause. The import numerical control equipment
mostly has the simple electrical network noise to filter the
technology, after uses for more than a year only then to have the
problem, explained the system is can resist the external interference.
Now, either was the external interference 变强, either was the
system resistance to interference changes the difference. Other
import numerical control equipment can the normal operation look from
the factory that, very is possible is the system question. When
module carries on the experiment to GEH the A25 discovered, this
module when opening machine correspondence has the barrier, the
on-line speed is slow, the resistance to interference changes the
difference, only is neglected by the main engine. After replaces
a new module, the equipment movement is stable, the breakdown
vanishes.
Original this wraps the CNC-GOP system is GEHRING Corporation
and SIEMENS Corporation cooperates the development patent product,
special-purpose function strong, the control convenient, the
performance is stable. Because is the new development system,
has not passed through the enough effectiveness for a period of time
test, the antijamming, the stability is bad. Actually, some many
occupies the equipment manufacture technology front factory all to
have the similar problem. Therefore, cannot worship blindly west
high-tech, must see even if is the advanced technology also or in the
development, or has the possibility to have the flaw. More is
the advanced technology more possibly has the flaw. When service
import numerical control equipment, both must acknowledge its
technical 先进? and must realistically see its insufficiency.
Second, must have analysis reading to report to the police the
information
The import equipment numerical control systems control
partial designs is rigorous, looked resembles minimum exceptionally
also can take in reports to the police the clause, and has the
possibility to let the machine stop. In the actual repair import
numerical control equipment process, reading reports to the police the
information is seeks the fast repair most to be basic also is the most
convenient method. But is not each information is all credible,
each information all may bring uses. Many reports to the police
in the information in the name, some many possibly to services
uselessly is even possible the misleading function, must be good at
from these information discarding the pross and select the essential,
going to the vacation to save really.
For example, German SCHAUDT Corporation produces the numerical
control cam grinder, is rubs truncates the cam peach CBN grinder.
Each time as soon as opening machine, can appear a big pile to
report to the police. Actually all was just opening machine,
some many preparations condition temporarily also not satisfiedly
created, did not have any practical significance.
Once, the engine bed had reported to the police demonstrates
"Filter of oil dirty" the static pressure system filter internal
organs. This equipment main axle 滑台 uses the static pressure
fluctuation guide rail. Dismantles the clean the filter, after
but installs or reports to the police; Also brings a new filter
to install, reports to the police or cannot eliminate. Carefully
examined PLC reports to the police the code, is searching this
breakdown along the code to report to the police the condition not to
work for the static pressure fluctuation guide rail pressure
transmitter. This breakdown design explanation is: When
this pressure transmitter does not induce to the pressure then
understood for was the filter stops up. But through the careful
inspection, the filter is good, exactly is the pressure transmitter
has the question, should send out the signal but not to send out the
signal.
Reports to the police information assigning, is the designer
obtains based on the PC simulation, is not his many years line
maintenance experience realized, often is according to the
conventional logic design, has a designer person to the analogue
result understanding factor. But the breakdown occurrence often
is unexpectedly, or must infers, the judgement according to the
breakdown phenomenon and the stochastic material. Provides to
the machine reports to the police the information, the correct manner
is: Cannot not believe, but cannot all believe. Cuts do
not have to readily believe reports to the police the information, do
not have to fall the vacation to report to the police the information
trap.
Third, just starts the use when the engine bed must finish the
complete backup
The import numerical control equipment mostly has
applied the modern micro electron numerical control technology and
carries on the management with PC machine, should say with PC machine
management CNC-PLC and the OP system, to the engine bed
serviceability, the maintainability could have the very big
enhancement. But if has forgotten the prompt backup, once the
engine bed has the procedure or the parameter loses, can bring the
trouble. In each kind of computer virus rampant situation,
carries on the backup to the PC system to have the necessity in
particular.
After a vacation, an import numerical control equipment opening
machine appears the OP kneading board signal light to glitter reports
to the police. After the inspection, the confirmation was
SIEMENS system interior CNC, the PLC parameter completely loses.
Carries on the procedure to restore the work immediately, after
will import when in the material will bring data and so on compact
disc, floppy disk will lose the system, the machine still could not
revolve. The original these materials mostly are the factory
when leaving the plant does the backup, after the process tries to
move the debugging and the scene revolution, the subprogram, specially
is the overwhelming majority parameter all has the very big revision.
The SIEMENS system according to the security in Europe standard
request, finished in particular after the procedure, but also must
carry on the user agreement the signature. If on hand does not
have the newest backup, to restores the system not to be familiar, can
be extremely passive.
After how can avoid losing the procedure passively to occur?
Is must make the worst situation - to have the preparation which
the hard disk damages. After the hard disk damage, all
diligently all are unable to carry on. Certainly, remanufactures
the new system hard disk also is possible, but in import numerical
control equipment mostly hard disk all right and wrong sign.
Some can use the notebook hard disk substitution, but this kind
attempts the successful assurance is not very big. Specially to
the automobile manufacture enterprise, requests the equipment to
repair as far as possible in the short time, is impossible to produce
the too much time to make the hard disk to restore the work.
In order to deal with the system program which possibly occurs
suddenly to lose, the effective method has the following several
kinds:
(1) the hard disk D plate makes the complete backup to PC
machine, must want the sign note clear filename, the product range,
the parameter type, the date and so on important marking. This
is most basic also is the most convenient backup method, once the
machine program or the parameter has the loss to be possible to carry
on immediately restores the work. The shortcoming is once PC
machine oneself appears the breakdown to be unable to carry on the
procedure to restore the work.
(2) in the PC machine D plate, makes the GHOST backup for the
system plate C plate. This is copes with the PC system failure
(destroys including virus) the simple highly effective method,
sometimes possesses 杀 the method all not to have reto give system
plate C plate GHOST to restore time comes effectively. GHOST
selects V 7.50 editions to move the effect under DOS to be better.
(3) backup engraves PC the hard disk content GHOST records the
compact disc. This method safe is reliable, is machine outside
the backup document good method.
(4) duplicates the hard disk. This is safest, the reliable
method. Buys together with the PC machine completely consistent
new hard disk, after duplicates properly preserves, once breaks down
PC hard disk, exchanges immediately the backup hard disk. The
merit is fast reliable, the shortcoming is the cost is high.
Fourth, comprehensive system consideration, science reserve
spare parts
In order to guarantee import numerical control equipment
in production normal operation, advocated oneself begins to repair
already the component which damages. But the numerical control
component general technology content is high, mostly has the
intellectual property rights protection, is unable easily to repair,
must stockpile the essential spare parts. The spare parts margin
size and the variety choice, always is has the dispute the topic, the
reserve takes the fund quantity too much oversized, forms the waste;
The reserve too are few, also cannot meet the production needs.
The import numerical control equipment spare parts reserve, may
according to following several factors to determine that,
(1) the margin generally does not break through purchases when
the equipment price 5%, certainly this is 参? is concrete also
should look at this equipment other factor situations.
(2) refers to the import numerical control equipment machine,
the electricity complex coefficient. The complex coefficient
big, the corresponding margin may slightly big, otherwise, may be
slightly small.
(3) as far as possible when purchase elects to subscribe the
identical factory the numerical control system, like this may the
enormous frugal spare parts expense.
(4) imports the software and hardware situation which the
numerical control equipment constitutes to have the difference.
To belongs to some to produce the product which the factory
voluntarily develops, should act according to supplies goods the
situation as far as possible full quantity reserve. Because
these spare parts usually supply goods the channel narrowly, the
purchase cycle is long, is "the monopoly product", it is necessary "to
forewarned is forearmed".
(5) carries on the reserve according to the market supplies
situation. Like product and so on popular goods SIEMENS, FANUC,
the market source of goods compares the foot, may act according to its
purchase date of delivery right amount reserve. The short-term
may purchase, may postpone the purchase long, the date of delivery,
but suitably purchases.
(6) acts according to produces the output definite spare parts
margin. The spare parts reserve, said is "the insurance
investment" which does not sever for the safeguard regular production
carries on, output bigger, "throws the insured value" to be bigger,
this conforms to the economic law. Two classes produce should
the margin which produces the single class be bigger than, otherwise,
then may consider suitably reduces.
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