What spare parts are needed for manual servo presses and how to set up a guaranteed stock?
Spare parts for manual servo presses mainly include mechanical parts, electrical components, etc. The following are the specific types of spare parts and how to set up safeguard stock:
First, the type of spare parts
1、Mechanical parts
Slider: The slider is a key component in the press to bear pressure and transfer force, long time use may appear wear, deformation and other problems, need to prepare spare slider.
Guide rail: The guide rail is used to guide the movement of the slider to ensure the accuracy of the press. Since the guide rail will be subject to friction and wear during operation, it is necessary to reserve a certain number of guide rails as spare parts.
Screws and nuts: Screws and nuts are used to transmit power to make the slide realize up and down movement. They are also easy to wear parts, especially in the case of high load, frequent use, easy to wear and precision decline, need to prepare spare parts.
Seals: Seals are found in the hydraulic and pneumatic systems of presses to prevent oil or gas leakage. Seal belongs to wearing parts, according to the use of equipment and seal material, specifications, etc., to prepare the appropriate amount of spare parts.
2、Electrical components
Servo motor: Servo motor is one of the power sources of manual servo press, which plays a key role in the operation accuracy and stability of the equipment. Since the servo motor may have short-circuit winding, bearing damage and other faults, it is necessary to prepare at least one spare servo motor.
Drives: Drives are used to control the operation of servo motors and are an important part of the electrical system. Drives may fail due to overheating, overvoltage, aging components, etc., so you need to prepare a spare drive.
Contactors, relays: these electrical components are used to control the circuit on and off, in the process of frequent action, its contacts are prone to ablation, adhesion and other problems, you need to prepare a certain number of spare parts.
Sensors: Pressure sensors, displacement sensors, etc. are used to monitor the operating status of the equipment and operating parameters, once the sensor failure, may lead to loss of control of the equipment or product quality problems, so you need to prepare the appropriate spare sensors.
Second, to protect the inventory setup method
1, to determine the key spare parts: according to the frequency of use of equipment, the probability of failure, as well as the degree of impact on production, to determine which spare parts are key spare parts. For example, servo motors, drives, etc., once the failure, may lead to the entire production process to a standstill, these belong to the key spare parts, need to set a higher protection of inventory.
2, analyze historical data: If the equipment has been used for a period of time, you can analyze the historical maintenance records, statistics on the frequency of replacement of spare parts and the law of failure. According to these data to predict future demand, and reasonably set the guarantee stock. For example, in the past year, a certain model of seals replaced every two months on average, then you can consider setting up to meet the 3 - 4 months of use of the guaranteed stock.
3, consider the supply cycle: to understand the supply cycle of spare parts, for the supply cycle of longer spare parts, should be an appropriate increase in the protection of stock. For example, the supply cycle of certain imported electrical components may be up to several months, it is necessary to reserve a sufficient number of equipment in advance according to the use of equipment and the risk of possible failure, in order to avoid equipment downtime due to untimely supply.
4, combined with the production plan: according to the production plan and the use of equipment arrangements, predict the operating time and load of the equipment in the coming period. If the plan has a large-scale production tasks, or equipment will be in a high load running state, should be increased accordingly to ensure that the equipment in the production process failure can be replaced in a timely manner spare parts, does not affect the production schedule.
5, regular assessment and adjustment: guarantee inventory is not fixed, the need for regular assessment and adjustment of the guarantee inventory. With the use of equipment, production changes and market supply fluctuations, the demand for spare parts may also change. Therefore, the safeguarded inventory should be checked at certain intervals (e.g., quarterly or half-yearly), and the quantity of the inventory should be adjusted according to the actual situation to ensure that the safeguarded inventory meets the needs of equipment maintenance and does not result in an excessive backlog of funds.
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