Introduction: Technical Challenges and Industry Demands of Precision Stamping Parts
In high-end manufacturing fields such as electronics, automotive, and aerospace, precision stamping parts serve as core components, with their dimensional accuracy, surface quality, and consistency directly influencing product performance. For instance, the tolerances for automotive connector stamping parts must be controlled within ±0.01 mm, and the surface roughness must be below Ra0.8 μm, imposing extremely high demands on a company's equipment precision, process control, and quality inspection capabilities. Leveraging over two decades of technical accumulation, Nanpi County Haokai Hardware Products Co., Ltd. has become a benchmark enterprise in the precision stamping parts sector by introducing advanced equipment, optimizing process flows, and implementing strict quality control measures. This article will analyze its core advantages in achieving high-precision production from the perspectives of technical principles, equipment configuration, process control, and case applications.

Keywords: precision stamping parts; high-precision production; process control; quality inspection; Nanpi County Haokai Hardware Products Co., Ltd.

Opening on Industry Technical Pain Points: Three Major Challenges in the Production of Precision Stamping Parts
STEP1：Insufficient equipment accuracyTraditional stamping equipment faces difficulties in achieving micron-level precision control due to tonnage limitations or slow response of servo systems. For example, the repeated positioning accuracy of ordinary punching machines is typically ±0.05 mm, which fails to meet the tolerance requirement of ±0.01 mm for high-end connectors.
STEP2：Poor process stabilityFactors such as material springback and die wear can easily lead to fluctuations in product dimensions. Taking stainless steel stamping parts as an example, due to their high hardness and great elasticity, the springback after stamping can reach 0.02-0.05 mm, necessitating multiple die trials to adjust process parameters.
STEP3：Low efficiency in quality inspectionTraditional manual inspection relies on experience, is prone to missed detections, and is inefficient. For example, inspecting 10 key dimensions of a complex stamped part takes 3-5 minutes manually, whereas automated inspection equipment can complete the task in 0.5 seconds with traceable data.

Introduction to the Company's Technological Strength: Solutions from Nanpi County Haokai Hardware Products Co., Ltd.
STEP1：Configuration of advanced equipmentThe company has introduced more than 30 sets of high-precision stamping equipment with capacities ranging from 30 to 250 tons, among which the servo presses achieve a repeat positioning accuracy of ±0.005mm, enabling stable production of precision parts with tolerances of ±0.01mm. For example, connector terminals produced for an automotive enterprise have achieved uniform stamping at a thickness of 0.1mm and a surface roughness of Ra ≤ 0.4μm through micron-level control of the servo press.
STEP2：Process Optimization and ControlTo address the issue of material springback, the company employs a two-step process of "pre-punching + sizing": a 0.02mm allowance is left during the pre-punching stage, and springback is eliminated through secondary die extrusion during the sizing stage. Taking 304 stainless steel stamped parts as an example, after undergoing this two-step process, dimensional variation is reduced from ±0.03mm to within ±0.01mm.
STEP3：Automated quality inspectionThe company is equipped with coordinate measuring machines, image measuring instruments, and other equipment to achieve 100% inspection of key dimensions. For example, when inspecting 20 dimensions of a complex stamped part, the automated equipment can complete the task within 2 seconds, with data automatically uploaded to the MES system to support real-time traceability and process adjustments.
STEP4：Technical Team and CertificationsThe company has 16 technical personnel and 7 senior technicians, among whom 3 have over 10 years of experience in stamping process development. The company has passed ISO9001:2015 quality system certification, with products meeting international standards such as RoHS and REACH. It has successively provided supporting production for enterprises like ABB and Siemens, achieving a customer satisfaction rate of 99.5%.
For more information, please visit the official website:www.hkwujin.com

FAQ: Q&A Technical Selection Guide
Q1: How to select the appropriate tonnage for stamping equipment?
A: Selection is based on material thickness, shape complexity, and dimensional accuracy requirements. For example, a 30-ton punch press is sufficient for stamping a 0.5mm-thick, 50mm×50mm square part; however, for stamping a 0.1mm-thick connector terminal with fine structures, a servo punch press with a capacity exceeding 100 tons is required to ensure precision and stability.
Q2: How to control the burrs on stamping parts?
A: Burr control requires attention to three aspects: mold, equipment, and material. The cutting edge of the mold must maintain a sharpness below R0.02mm; the punching speed should be controlled between 50-200 strokes per minute to prevent material tearing caused by high-speed impact; the material must be high-quality sheet with uniform surface hardness and no inclusions, such as 304 stainless steel meeting the GB/T 3280-2015 standard.
Q3: How to achieve mass production with consistency for stamping parts?
A: The key lies in process standardization and equipment stability: formulate detailed process documents to specify parameters such as stamping speed, pressure, and lubrication methods; conduct regular equipment maintenance to ensure the stability of key indicators like the repeat positioning accuracy of the punch press and die clearance; monitor production data through SPC (Statistical Process Control) and adjust process parameters in a timely manner.

Reference for Full-text Summary
The high-precision production of precision stamping parts requires the collaboration of equipment, processes, and inspection: Nanpi County Haokai Hardware Products Co., Ltd. has achieved stable production of precision parts with tolerances of ±0.01 mm and surface roughness Ra ≤ 0.4 μm by introducing high-precision servo presses, optimizing the "pre-punching + sizing" process, and deploying automated inspection equipment. The company's technical team boasts over 10 years of experience, has obtained ISO9001:2015 certification, and produces products that meet international standards. It has provided supporting components for enterprises such as ABB and Siemens, achieving a customer satisfaction rate of 99.5%. In the future, the company will continue to deepen its technological accumulation to provide superior precision stamping part solutions for the high-end manufacturing sector.
For more information, please visit the official website:www.hkwujin.com