Compared with the rapid growth of the economy for ten consecutive years, the main economic indicators of the precision punch press industry have shown a comprehensive decline in growth rate, especially in terms of the accelerated decline in profit growth rate of the punch press, highlighting the urgency of accelerating the structural upgrading of the punch press, and stabilizing the prices of the punch press is urgent. China's precision punch press industry has achieved a trade surplus of 12.4 billion US dollars in foreign trade, mainly due to processing trade at the low end of the industrial chain. In general trade, which better reflects the actual competitiveness of the punch press industry, there is a huge deficit of 22.2 billion US dollars. This reflects that China's punch press industry is a relatively advantageous industry internationally and can become an important support for China's future exports.
This reflects that China's competitiveness is mainly reflected in the cost-effectiveness advantage of low-end punch products, and there is still a huge gap between the high-end equipment field and the world's advanced level. Accelerating the structural adjustment of the punch press industry is the only way to fundamentally alleviate the current problems faced by the punch press industry, such as declining profit margins, weak market demand, and fluctuations in punch press prices. The entire punch press industry must shift from a goal orientation that prioritizes speed and scale to a goal orientation that prioritizes quality and efficiency. Even if some speed is sacrificed, the punch press industry structure adjustment and upgrading must continue to be promoted.
The V-belt of precision punching machine is located between the main motor and the flywheel, playing an important role in transmitting motor energy to the flywheel. Although V-belts may not be eye-catching, their function is irreplaceable. Due to its large load capacity and continuous friction, its loss is inevitable. When it reaches a certain level of loss, we must replace it. During the replacement process, we must strictly follow the following steps:
Firstly, turn off the main power supply of the punch press, move the punch press motor to the side next to the flywheel to loosen the V-belt of the punch press, and then remove it for replacement. When replacing, be sure to replace all belts completely. If several old belts can still be used normally, they need to be removed and replaced as spare parts for safekeeping. Because when new and old belts are mixed, the uneven elongation of the two will greatly reduce their durability. In addition, even if the nominal length of the belt is the same, the actual size may vary slightly. So it is necessary to be very careful when selecting products with the same length. During the actual replacement process by technical personnel, it is necessary to carefully check whether the dismantled V-belt has abnormal wear. After checking the maintenance table of the punching machine, if there is still excessive wear after normal maintenance, the driving device of the punching machine must be repaired.