BOYA fine blanking production division, the products are good stability and reliability, high degree of automation, high production efficiency, simple operation and ergonomic. For localization of high-end intelligent fine blanking equipment, raise the capacity of fine blanking production, After years of research and development, design and manufacturing, 320 tons, 630 tons, 700 tons of hydraulic fine blanking machines have been successful production and operation.

Types of Fine Blanking

Fine Blanking Line

Based on BOYA's excellent processing and manufacturing capacity and rich series of products, we have a complete set of fine blanking equipment for the fine blanking production line.



Fine Blanking Machine

BOYA series CNC hydraulic fine blanking machine developed by BOYA is high-end automation equipment with advanced technology, simple use, precision and independent intellectual property rights.

Read More



Blanking Machine Refabrication and Maintenance

BOYA not only provides a full set of fine blanking production line equipment but also our technical team to provide comprehensive technical support and training services.



What is Fine Blanking?

Precision blanking. Including strong blanking precision blanking, precision blanking to concave die and flat blanking precision blanking. Automotive precision punching parts production to strong blanking precision blanking. The geometric shape, dimensional tolerance, shape and position tolerance and shear surface quality of fine blanking parts are much higher than ordinary blanking parts, fine blanking process plays a great role in the field of automotive parts manufacturing.

Working Principle of Fine Blanking

Compared to normal blanking, fine blanking operation is more precious, product high precision requirements, no collapse Angle, no burr, the full bright belt is the difficulty of stamping process, the use of ordinary blanking process cannot avoid burr, collapse angle.

Fine blanking technology is a special method to solve this kind of product.

Fine Blanking Advantages

Fine blanking china is a kind of chipping-free processing technology, which is a precision blanking method developed from the general blanking technology. Fine blanking ensures that the punched surface of the punched part is free of cracks and tears over its entire material thickness. In addition, the tightest dimensional accuracy and flatness tolerances can be achieved. Fine blanking is able to obtain high quality fine blanked parts with higher dimensional accuracy, cleaner blanking surface, less warpage and better interchangeability than normal blanked parts in one punching stroke, and to achieve improved product quality at a lower cost.

Fine Blanking Process

There is a fundamental difference between the process characteristics of fine blanking and normal blanking. While normal blanking controls the tearing of the sheet during the blanking process, fine blanking does everything possible to inhibit the tearing of the sheet during the blanking process. Fine blanking design remains as one piece until the part is separated from the sheet, and the sheet metal is always in a plastic deformation process during fine blanking. To achieve this, the V-rim and counterpress are used to hold the sheet before punching to prevent the sheet from moving inside or outside during the punching process. In addition, together with the small gap between the convex and concave dies and the appropriate small rounded corners of the concave die, a three-way compressive stress state in the local area of the punching is formed during the punching process, thus ensuring the plastic deformation process of the punching. Moreover, the fine blanking material and lubrication state also have a great influence on the effect of fine blanking operation.