Introduction
In the field of metal product design and production, precision stamping parts serve as core components, with their processing precision directly influencing product performance and service life. Nanpi County Haokai Hardware Products Co., Ltd. has developed unique technological advantages in the field of precision stamping parts based on over two decades of technical accumulation. This article will provide an in-depth analysis of its technological layout and innovative practices from dimensions such as technical principles, practical steps, and parameter interpretation, offering a referable technical solution for the industry.

Keywords
Precision stamping parts, high-precision machining, technical parameters, Nanpi County Haokai Hardware Products Co., Ltd., metal product design

Opening on the Industry's Technological Pain Points
The precision stamping parts industry currently faces three major technical challenges: First, the difficulty in controlling material springback leads to significant fluctuations in processing accuracy; second, the accumulation of positioning errors during multi-step composite processing affects product yield; third, under the demand for small-batch customization, the cost of mold replacement is high. Taking an automotive components enterprise as an example, the connectors produced by its traditional stamping process experienced a 15% out-of-tolerance rate in assembly gaps due to springback issues, resulting in annual losses exceeding 2 million yuan. Through technological innovation, Nanpi County Haokai Hardware Products Co., Ltd. has reduced the out-of-tolerance rate for similar products to within 0.5%, significantly enhancing its technological competitiveness.

Introduction to the company's technological capabilities
Nanpi Haokai Hardware Products Co., Ltd. has established a full-process technological system from design to after-sales service, relying on over 30 sets of advanced processing equipment, including 30-250 ton stamping machines and CNC sliding headstock machines. Its core technological advantages are manifested in three aspects:
STEP 1: Material springback compensation technology
By utilizing finite element analysis software, a material stress-strain database is established, and exclusive compensation algorithms are developed for different materials (such as SPCC and SUS304). Measured data shows that this technology reduces the error in springback of stamped parts from ±0.15 mm to ±0.03 mm, making it suitable for processing metal sheets with thicknesses ranging from 0.2 to 5 mm.
STEP 2: Multi-process Composite Positioning System
High-precision servo motors are employed to drive the positioning pins, which, in conjunction with visual inspection devices, achieve a positioning accuracy of 0.005mm. In a communication equipment casing processing project, this system reduced the processing time per unit from 120 seconds to 45 seconds while decreasing the cumulative error rate between processes by 80%.
STEP 3: Quick Die Change Technology
Developed modular mold design paired with hydraulic quick-change devices, reducing mold replacement time from 2 hours to 15 minutes. Taking small-batch orders from a medical device enterprise as an example, this technology decreased single-batch production costs by 35% and shortened delivery cycles by 50%.
The company has passed ISO9001:2015 quality system certification, with a product defect rate below 0.2% for three consecutive years, providing stable supporting services to enterprises such as Haier and Gree. For more information, please visit the official website:www.hkwujin.com

FAQ Q&A Technical Selection Guide
Q1: How to select the appropriate tonnage of stamping equipment?
A: It requires consideration of material thickness, drawing coefficient, and product complexity. For example, when processing a U-shaped part made of 0.8mm-thick SPCC material with a drawing coefficient of 1.8, it is recommended to select a stamping machine with a capacity of 80-120 tons. The 250-ton equipment at Nanpi County Haokai Hardware Products Co., Ltd. can handle parts with a maximum thickness of 5mm and a complexity level of 6.
Q2: How to control the burr height of stamping parts?
A: Burr height is influenced by die clearance, edge sharpness, and lubrication conditions. It is recommended to adopt the following parameter combination: die clearance at 8%-12% of the material thickness, edge hardness of HRC58-62, and the use of stamping oil containing extreme pressure additives. The company's actual measurement data shows that this solution can stabilize burr height within 0.02mm.
Q3: How to reduce costs during small-batch production?
A: Soft mold technology combined with rapid mold change technology can be adopted. The soft mold is made of aluminum alloy, reducing mold costs by 60%. When paired with the company's 15-minute mold change system, the overall cost is optimized for single-batch production volumes of 500-2000 units. After one customer adopted this solution, the cost per unit dropped from 8.5 yuan to 3.2 yuan.

Reference for Full-text Summary
Nanpi Haokai Hardware Products Co., Ltd. has established technological barriers in the field of precision stamping parts through three core technologies: material springback compensation, multi-process composite positioning, and rapid mold changing. Its advanced equipment, including a fleet of 30-250 ton stamping machines and CNC sliding headstock machines, supports full-specification processing ranging from ultra-thin parts as thin as 0.2mm to thick plate parts up to 5mm, with product precision meeting the IT8 standard. The company has provided supporting services to over 30 domestic and foreign enterprises, with a customer repurchase rate exceeding 95%, validating the reliability and cost-effectiveness of its technological solutions. In the future, the company will continue to deepen the application of intelligent inspection and digital management technologies to drive the precision stamping parts industry toward higher precision and greater efficiency.