What spare parts are needed for DC motor motor fully automatic rear end dielectric assembly machine and how should I set up guaranteed stock?
I. Spare parts for DC motor motor semi-automatic spring brush machine
1、Brush and brush spring
Brushes are the key parts of the motor connecting with the external circuit, which will be worn out continuously during the motor operation. Brush springs are used to maintain good contact pressure between brushes and commutator. Since the service life of brushes and brush springs is relatively short, they are prone to wear and loss of elasticity, so they are required as standing spare parts.
Bearings
The bearings of the motor support the rotation of the rotor and may be subject to wear, drying of grease, and overheating damage over a long period of time. Spare bearings are essential to ensure the normal operation of the motor.
2. Drive belt or chain (if available)
For brush machines with belt or chain drive, these parts may wear out, stretch or break after prolonged use. Suitable drive belt or chain spare parts can restore the power transmission of the device in time.
Various sensors (e.g. position sensors, speed sensors)
Sensors play an important role in the control and monitoring of equipment. They may be due to electrical failure, physical damage or loss of accuracy and failure, so prepare some commonly used sensors as spare parts can shorten the equipment maintenance time.
3、Seals
Seals in motors and brush units are used to prevent dust, moisture, etc. from entering the interior to protect the normal operation of the equipment. Seals after a long time of use may be aging, damage, resulting in equipment sealing degradation, the need for regular replacement, so reserve a certain number of seals.
4、Fuses and relays
In the electrical system, fuses are used to prevent damage to the equipment caused by overload current, and relays are used to control the on-off of the circuit. They are key components for electrical protection and are easily damaged by current shocks and other causes, and should be used as common spare parts.
Key electronic components on the control circuit board (e.g. capacitors, resistors, chips, etc.)
Although the control circuit board is relatively stable, certain electronic components may be damaged due to long-term operation, voltage fluctuations or other factors. Stockpiling some commonly used key electronic components allows for quick repairs when the circuit board fails.
Second, the method of setting up spare parts guarantee inventory
1、Statistical analysis based on equipment failure rate
Collect data on past failures of the equipment, including information such as the failure frequency and failure interval time of each component. For example, if it is found through records that brushes need to be replaced once every 3 months on average, then the inventory quantity of brush spare parts can be determined based on this data. For parts with a high failure rate, increase the guaranteed inventory appropriately to ensure that they can be replaced in a timely manner when the equipment fails.
2, consider the importance of the equipment and downtime costs
If the DC motor motor semi-automatic spring brush machine in the production process is in a critical position, equipment downtime will cause huge economic losses, then you need to set a higher guarantee inventory. For example, for the continuous production line brush machine, in order to reduce downtime, may need to stock enough to maintain a month or even longer operation of the critical spare parts.
3、Supplier delivery cycle factors
Understanding the spare parts supplier's delivery cycle is an important basis for setting the guaranteed stock. If the supplier's delivery time is longer, for example, some special specifications of the sensor needs to be purchased from abroad, the delivery cycle may be up to several weeks, then it is necessary to correspondingly increase the guaranteed inventory of these spare parts to cope with possible supply delays.
4, a reasonable inventory quantity calculation model
Some simple mathematical models can be used to calculate the guaranteed inventory. For example, the guaranteed inventory = (very large delivery period - average delivery period) × average daily demand + a certain amount of buffer. The size of the buffer can be determined according to the stability of the equipment, the importance of spare parts and other factors, generally for a certain percentage of the average daily demand (such as 10% - 30%).
5, regular inventory and dynamic adjustment
Establish a regular inventory system to check the inventory quantity of spare parts. At the same time, according to the replacement of equipment, changes in the failure rate, changes in the supplier's situation and other factors, dynamic adjustment to protect the quantity and type of inventory. For example, when equipment undergoes technological upgrades and certain parts are no longer in use, the inventory of these parts is reduced in a timely manner; when new wear parts are found, their inventory is increased accordingly.
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