jackow@pressmachine-world.com +86-13817590728 WORLD производитель и поставщик силовых прессов

How to do maintenance of power press machine ?

2021-05-20

How to do maintenance and inspection of a power press machine ？

Routine inspection
The machine inspection and maintenance are verimoatan forkeen is safety oeration ad rolonin is worin lie o te insecion and maintenance before oeration ust e cared outcarefully

ITEM	STANDRAND
pipelines	There are not leakages on air, lubrication and hydraulic pipelines
circuits	No damaged & well connected
Air pressure	The air pressure is about 0.5Mpa
Seeper	No water in pneumatic dual component filter relief valve and mist catcher
Oil	Enough oil in gear case, ball coupling between ram and link, hydraulic overload protection oil bath and lubrication pump
Flywheel direction	Start the main motor to find out if the flywheel run in accordance with the arrow marked there
Slide movement	INCHING
	SINGLE
	CONTINUAL
Emergency stop	Press the E-stop button then the slide and the main motor will stop immediately
Emergency stop	Press and hold the E-stop button. At the same time, do other action, the movement will not be fulfilled
Guide way	Five minutes later, the surface of the guide way will be fully lubricated and no thermal hazards
Opto-electronic	Stop immediately as shield the beam in operation
Opto-electronic	After opto-electronic emergency stop, the machine cannot be started without resetting the module first

CAUTION: If find out any circumstance do not conform to the standards, fix or report them timely

Periodical Inspection

Affer a perind of onertin sme errs may ocur such asprs ose it and less il f oina tentin hcondtoinst he ma make oerar inonvent en seriusl infuene the safety operation and machine life.

Inspection once every three months (500 hours)

ITEM	METHOD & TOOLS	STANDARD
ITEM	Before switch on the power
The screw and nuts	Use spanner to turn them	The screws and nuts of main parts are tightened (such as main motor base, the cover of the flywheel, guide way, worktable and balancing cylinder etc).
Lubrication system	Optical check the oil gage	Enough oil in lubrication pump and link ball coupling.Connectors are tightened and no leakage
Electrical system	Turn cam by hand	With proper looseness
	Optical checking then use ohmmeter to find out if they are well connectec	The connector and roller of cam are well connected
	Optical checking	The spring, bolt and pin on cam shaft are ok
	Optical checking	Thermal relay connectors are ok
	Optical checking	All switches and buttons are clean and tightened
	Turn with screwdriver	Terminals in electric cabinet are tightened
	Turn with screwdriver	The screws to fix electric cabinet are tenghened
The v-belts	Optical checking	No twisting, no damage and being properly tensioned
Aftier main motor is started
When starting	Optical checking and hearing	When starting the main motor, no racing, no abnormal noise
		When flywheel speeds up, no obvious vibration
		No abnormality with clutch -brake and dual valves
Electric system	Optical checking	No abnormality with switches and buttons
Driving &Operation	Optical checking	The hand of the crankshaft indicates the right angle
	Optical checking and hearing	No abnormal vibration and noise when starting the slide
	Optical checking	The slide stops at top dead position in single and continual operation
	Hand touching	No overheat in bearings and sliding part
	Optical checking	No abnormality in every slide stroke running
	Optical checking	Repeated operation of inching, single and continual stroke running are ok
Slide adjustment	Optical checking	The showing value is right the height of the shut mold
		The function of slide adjustment is ok
		The limit switch can really stipulate the upper and lower limits of the slide adjustment
		The function of air eiector is ok

Inspection once every 6 months (1,000 hours):

The items are the same as those of inspection of every 3 months. Replace qrease at the slide ball coupling after 6 months (or 1.000 hours) operation.

Inspection once every year:

The items that must be inspected once every year for the safety operation and long working life as follows:

ITEM	METHOD & TOOLS	STANDARD
THE BODY	Optical checking after removing the back cover	No split and other damage on the surface
THE BODY	Check the tightness of the screws and nuts by spanner	Be properly tightened
Driving system	Optical checking	No abnormality on the surface of the crankshaft and bearing: good grease filling condition
	Check axial and radial run-out of the flywheel and grease filling condition	No abnormality and filling properly
	Check tightness of cam shaft and driving gear pair	Properly tightened
	Check chain tightness	Properly tightened
	Check ram motion bearing and gear shaft	No abnormality or split
Slide driving	Check slide starting as ram adjustment within its rangeCheck start and stop of upper and lower limit switches of slide	Stop at upper and lower limits correctly
	Check piston rod and the appearance in balancing unit	No crack. damage or obvious air leakage
	Check if guide way clearance is proper	Proper clearance and flexible motion (refer to "ram and quide wav adiustment")
Air system	Check piston starting condition	No abnormal condition
	Stop main motor and check operation bv inching	No abnormal condition when starting air supply or exhaust
	Check muffler, pressure relay, oil mister, filter	No clogging or damage
	Air reservoir and pipe connector	No damage, crack or air leakage

6.1 Inspection once every 3 years:

ITEM	MOTHOD	STANDARD
Accuracy calibration	Calibrate machine accuracy as all clearance, parallelism, verticalityand flatness	Based on "JB1280-83 Gap Frame Presses Accuracy
Clutch-brake	Check wearing surfaces of friction disks and braking disks	Replace them if necessary
	Check if spring is deformed or broken	Replace it if necessary
	Check if seal ring is aged or air leaky	Replace it
slide	Check wearing degree of ball coupling and screw	Replace it
slide	Remove and clean seal rina. replace grease	Clean it
Slide guide way and balancing cylinder piston	Check wearing degree of ram quide way	Repair it
Slide guide way and balancing cylinder piston	Check wearing degree of balancing cylinder piston and piston rod	Repair or replace it
Sealed bearing	Check or replace with clean grease	Clean and renlace it
Cable, rubber tube	Check if metal hoses, cables or rubber tubes of motive parts are aged or damaged	Replace with new ones