-
ProductResearch and development of automation control systems and industrial automation customization, precision sheet metal manufacturing, automotive parts, chassis cabinets, mechanical equipment, and various metal products
-
About UsThe company possesses a complete industrial service chain, equipped with a professional marketing team, experienced technical engineers, an innovative R&D center, a precision production workshop, and an efficient after-sales service system.
-
BlogThe company possesses a complete industrial service chain, equipped with a professional marketing team, experienced technical engineers, an innovative R&D center, a precision production workshop, and an efficient after-sales service system.
What are the accuracy requirements for sheet metal parts in precision sheet metal processing?
Published on:
2025-04-22
In precision sheet metal processing, the accuracy requirements for sheet metal parts cover four core dimensions: dimensional accuracy, shape accuracy, positional accuracy, and surface accuracy. The specific standards and technical implementation methods are as follows:
In precision sheet metal processing, the accuracy requirements for sheet metal parts cover four core dimensions: dimensional accuracy, shape accuracy, positional accuracy, and surface accuracy. The specific standards and technical implementation methods are as follows:
1. Dimensional Accuracy: Tolerance range strictly controlled within ±0.1mm
Basic Tolerance Requirements
The dimensional tolerances for precision sheet metal processing generally follow IT6-IT7 standards (such as GB/T 1804-m), with core dimensional tolerances controlled within ±0.05mm to ±0.1mm. For example:
1. Laser cutting accuracy can reach ±0.03mm (when using high-precision equipment);
2. CNC punching accuracy is about ±0.05mm;
3. Bending dimensional tolerance must be strictly controlled within ±0.1mm, which is much higher than the ±0.2-0.3mm standard for ordinary sheet metal processing.
Industry Differentiated Standards
1. Aerospace field: The tolerance range for aircraft landing gear sheet metal parts is usually within ±0.05mm, requiring structural stability under extreme environments;
2. Medical equipment field: The dimensional tolerance of surgical instrument casings must be controlled within ±0.02mm to ensure seamless integration with precision instruments;
3. Semiconductor equipment field: The flatness error of wafer transfer boxes must be ≤0.01mm to avoid micron-level particle contamination.
2. Shape Accuracy: Minimization of straightness, roundness, and flatness errors
Straightness and Flatness
1. Straightness error must be ≤0.05mm/100mm (e.g., edges of electronic device base plates);
2. Flatness error must be ≤0.1mm/100mm (e.g., surface of mobile phone middle frame), with high-end products even requiring Ra0.4μm surface roughness.
Roundness and Bending Accuracy
1. Roundness error must be ≤0.05mm (e.g., sealing surface of hydraulic valves);
2. Bending angle error must be controlled within ±0.1° (e.g., bending radius R20mm±0.5mm at the edge of stainless steel water tanks).
Keywords:
Recommended
We focus on providing customers with one-stop customized sheet metal processing solutions, controlling the entire process from design and development to production and delivery to ensure your personalized needs are met.
Products Center
Contact Us
Address: No. 123-3, Songjiang Road, Tianshan International Innovation Industrial Park, Shijiazhuang Economic and Technological Development Zone, Hebei Province