| Production of quality products must rely on sophisticated machines and tools, while maintaining the accuracy of machines and tools requires regular maintenance. Good maintenance plan can extend the life of machine tool and reduce the chance of maintenance.Our company has accumulated some experience in the maintenance of the presses during these thirty years, and we share the following: 1) Daily check points: | Project | Check points | | 1 | work environment | – Keep the machine clean and tidy | | 2 | Lubrication oil level gauge inspection | – Each lubrication point should be in the lower limit of the oil level | | 3 | Compressed air system inspection | – Use sound to determine whether the joints or parts are leaking
– Check the piping、contact、The clutch and the balance cylinder leak gas | | 4 | Whether the pressure gauge needle is in range | – Adjust pressure gauges properly，The pointer is detached from the red area | | 5 | Filter | – Drain the water from filter memory before operation | | 6 | Air cylinder | – Open the drain valve of the gas cylinder before operation and drain the internal water | | 7 | Brake clutch and solenoid valve | – The operation of an inch and the exhaust condition of the solenoid valve are used to identify the abnormality | | 8 | Check the rotation of flywheel after starting of motor | – Pay attention to start, acceleration, vibration and whether there is any noise, such as when the rotary resistance is large, the belt will vibrate | | 9 | Full operation inspection | – Inch move, safe stroke, continuous foot inspection |
2) Weekly check points: | Project | Check points | | 1 | Air filter | – Disassemble the filter to clean the metal mesh，In case of the metal mesh, the pressure cannot rise | | 2 | Electrical component inspection | – Whether the terminals will be loose or oil, dust and other adhesion, contact condition of contact shall be examined | | 3 | Confirm whether the electrical wiring is abnormal | – Check that the electrical wiring is broken、break line、The connection is loose and so on，Must be checked | | 4 | Parts cleaning | – oil leak、dust、To remove debris, etc，Also check for damage |
3) Monthly check points: | Project | Check points | 1 | The travel determination of clutch and brake | – dry type clutch、The travel of the brake should be within 1.5-2.0mm
– wet clutch and brake travel should be within 1.5-5.0mm | 2 | V belt for main motor | – V – type belt with hand pressure check pull, to sink about 1/2 “the arc state is ideal | 3 | Balance cylinder inner condition check | – Open the balance cylinder to check the lubricating oil condition | 4 | Stop at the dead end | There are several reasons for the stop position- Stop position must be fixed, but the CAM switch position should be adjusted when it is not fit
- Stop position is not necessarily, but the wrong range is not long please adjust the departure, the brake stroke
- Stop location is not always necessary, but please adjust the CAM when the error range is too much
| 5 | Look out for site lubrication | – Use the manual pump to pull down a few times，In case of oil loss, the heat loss of copper and head guide plate is caused。 | 6 | Pay attention to changes in air pressure | – Always pay attention to the pressure gauge and avoid the pressure outside the specified range to prevent damage | 7 | Comprehensive inspection of cleaning, cleaning and punching of various parts | – The residual air in the gas should be excreted and all parts removed |
4) Annual check points: | Project | Check points | | 1 | Accuracy checking | - Compliance with relevant levels of tolerance
- Please refer to the precision table for tolerance
| | 2 | Disassembly of clutch and brake | - Dry type to make the consumption of the film test, the cylinder inner U ring has been damaged by the friction, the spring cylinder internal friction inspection, bad time should be repaired or updated
- The wet travel should be replaced for the disc and friction plate at 5mm
| | 3 | Solenoid valve inspection | – Check whether the action is in good condition, the coil is not burned, the spring is abnormal, bad time should be repaired or updated | | 4 | Screw inspection | – Check whether the screw is tight | | 5 | Electrical connection check | – Check whether the relay contact is worn and the wiring is loose |
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