precision stamping parts

What Are Precision Stamping Parts?

Precision stamping is a high-precision and efficient stamping processing technology. It can produce stamping parts with high dimensional accuracy, good surface quality, and complex shapes by optimizing mold design, stamping process, and stamping machine performance.

Precision stamping refers to strictly controlling mold accuracy, stamping process parameters, and stamping machine performance during the stamping process.
so that stamping parts’ dimensions, shape, and surface quality achieve a high level of accuracy.

It is an advanced manufacturing technology widely used in the automobile, electronic, aerospace industries, etc.

The precision stamping parts’ dimensional accuracy can reach a higher tolerance level, usually between IT6 and IT9. For example, some tolerances can be controlled at ±0.05mm or even higher precision.

The tolerance grades are usually classified according to national standards (such as GB/T 1804) or industry standards. The tolerance grades specified by the national standard range from IT01 to IT18. The smaller number means higher precision. For example, IT7~IT8 is the general punching medium precision, and IT6~IT7 is the higher precision.

Specific tolerance range: For different dimension precision stamping parts, the tolerance value is different. For example, according to the GB/T 13914-2002 standard, the flat and formed dimensional tolerances are divided in detail according to the basic dimension and material thickness.

For smaller dimensions (such as 0~1mm), the tolerance value grade ST1 may be only 0.008mm, while for larger dimensions (such as 160~400mm), the tolerance value grade ST11 may reach 0.2mm.

Precision Stamping VS General Stamping

Features	Precision stamping	General stamping
Precision	High dimensional accuracy, usually IT6~IT9	The dimensional accuracy is low, usually above IT10
Surface quality	Good quality surface, no obvious defects	The surface may have defects, such as burrs and scratches
Production efficiency	High efficiency production, suitable for large scale production	The efficiency production average
Mold requirements	High accuracy mold requirements, high manufacturing cost	The mold accuracy requirements are relatively low
Stamping machine requirements	High accuracy stamping machine, high-precision positioning, and control required	The stamping machine accuracy requirements are relatively low

Precision Stamping Parts Working Principle

The precision stamping production basic principle is same as general stamping. which uses stamping machine pressure to stamp, bend, stretch, and other processes on metal sheets through the mold.

However, precision stamping has been optimized in the following steps:

Mold design and manufacturing: Precision stamping molds use high-precision processing technology, such as electrospark machining, precision grinding, etc.
Ensure the mold’s dimensional shape, edge, guide, and assembly accuracy. The mold directly affects dimensions accuracy.

Stamping process optimization: Precision stamping reduces deformation and error during the stamping process, we optimized process parameters, such as blanking gap, blanking speed, and blanking force. For example, precision blanking technology can effectively reduce blanking burrs and dimensional deviations.

Improved stamping machine accuracy: Precision stamping machine usually has a high-precision positioning system, a stable transmission system, and an advanced control system. These devices can ensure repeatability and consistency, thereby improving the precision stamping parts dimensions accuracy.

Practical case

We are a precision stamping parts manufacturer, our precision stamping machine can process parts’ tolerance with 0.01mm accuracy. The punching speed is 500-1000 times per minute. This precision stamping machine and process technology can meet the precision stamping parts production needs.
In short, the precision tolerance of stamping parts is an important indicator to measure processing quality. By optimizing mold design and manufacturing, strictly controlling material quality, using advanced stamping processes and machines, and adding subsequent finishing processes, high-precision stamping parts production can be achieved.