The working principle of the vacuum suction table on an engraving machine involves using a vacuum pump to extract air from inside the table surface, creating negative pressure, which then adsorbs the workpiece onto the table surface. The structure of the vacuum suction table mainly includes a square base groove, a square top plate, soft rubber, a sealed space, air-permeable holes, and suction tubes. During operation, the workpiece is first placed on the table surface, followed by suction through the suction tubes. The generated negative pressure enters each area, causing the air-permeable holes within those areas to create suction force. A layer of soft rubber is attached to the top plate of the table, ensuring that when the workpiece is adsorbed, it is well-sealed and less prone to leakage, thus securely holding the workpiece. This design accommodates workpieces of different sizes, and the adsorption surface uses a soft rubber microporous structure, making it less likely to leak and achieving maximum suction force. Additionally, the vacuum suction table offers advantages such as simple structure, low cost, and high processing efficiency.