How to determine if a punching machine needs major repairs?

In the metal processing industry, punching machines are one of the core equipment, and their operating status directly affects production efficiency and product quality. However, as the usage time increases, the punching machine may experience various performance degradation and malfunction issues, at which point it is necessary to consider whether to carry out major repairs. So, how to accurately determine whether the punching machine needs major repairs? This article will provide you with a detailed interpretation of key indicators and offer practical guidance.

1. Equipment performance degradation

Reduced processing accuracy: If the size or shape error of the workpiece processed by the punch exceeds the allowable range, it may be caused by mold wear, excessive clearance between guide components, or decreased accuracy of the transmission system. All of these require major repairs to restore the machining accuracy of the equipment.

Reduced production efficiency: The running speed of equipment slows down or frequent malfunctions and shutdowns may be caused by motor, transmission system, or control system failures. Major repairs can help diagnose and fix these issues, improving the efficiency of punching machine production.

2. Abnormal sounds and vibrations

Abnormal sound: The punching machine produces abnormal sounds during operation, such as metal impact sound, friction sound, etc., which may be caused by bearing damage, gear wear, or loose transmission components. These abnormal sounds are warning signals for major repairs.

Obvious vibration: Obvious vibration occurs during the stamping process, which may be caused by insufficient rigidity of the body, uneven workbench, or improper installation of the mold. Punching machine overhaul can help adjust equipment status and reduce vibration.

3. Oil leakage and poor lubrication

Oil leakage phenomenon: The lubrication system or transmission system of the punching machine may experience oil leakage, which may be caused by aging seals, broken oil pipes, or damaged oil seals. Oil leakage not only leads to poor lubrication, but may also cause equipment failure. Overhaul can replace damaged seals and oil pipes, and restore the lubrication system of the equipment.

Poor lubrication: Insufficient lubrication of sliding and transmission components can lead to increased wear and temperature rise of the punching machine. Overhaul can inspect and replace lubricating oil, clean the lubrication system, and ensure that the equipment is well lubricated.

4. Wear and damage of components

Mold wear: The mold will gradually wear out during use, leading to a decrease in machining accuracy and workpiece quality. The overhaul of the punching machine can replace worn molds and restore the processing capacity of the equipment.

Damage to transmission components: The transmission components of the punching machine, such as gears, bearings, chains, etc., may be damaged during use, causing the equipment to malfunction. Overhaul can replace damaged transmission components and repair the transmission system of the equipment.

5. Decreased security performance

Failure of safety protection devices: The safety protection devices of the punching machine, such as photoelectric protection and emergency stop button, may fail during use, posing a safety risk to the operator. Overhaul can inspect and repair safety protection devices to ensure the safety of equipment.
Loose equipment structure: The structure of the punching equipment, such as the body, worktable, slider, etc., may become loose during use, leading to equipment instability and decreased machining accuracy. Overhaul can tighten loose components and restore equipment stability.
In summary, when the punching machine experiences issues such as decreased equipment performance, abnormal sound and vibration, oil leakage and poor lubrication, component wear and damage, and decreased safety performance, major repairs may need to be considered. Major repairs can help restore the performance, accuracy, and safety of equipment, improve production efficiency, and enhance product quality. However, the specific need for major repairs still needs to be judged based on the actual situation and consulted with professional maintenance personnel.