12-Month Servo Punch Press Whole-Line Transformation Case of Auto Tier 1 Supplier X Precision Stamping Factory

Case Overview Source: On-Site Production Tracking Data of X Factory (January 2025 – January 2026), Third-Party Industrial Equipment Testing Report, Enterprise Financial Operation Ledger

X Precision Stamping Factory is a Tier 1 auto parts supplier located in Jiangsu, China, specializing in the mass production of new energy vehicle DP980 high-strength steel structural parts and aluminum alloy battery shell stamping components. Before the comprehensive equipment transformation project launched in January 2025, the factory’s 3 main stamping production lines were all equipped with 8 sets of traditional 110-ton mechanical punch presses, with a daily production capacity of about 18,000 stamped parts and a two-shift 16-hour continuous operation mode every day.

The factory faced six prominent production and operation pain points caused by mechanical punch presses for a long time:

1. High scrap rate of high-strength steel parts: The fixed impact stroke of mechanical equipment led to frequent cracking and wrinkling of DP980 steel structural parts, with a scrap rate as high as 3.7%, resulting in a large amount of raw material waste and loss.
2. Excessive electricity cost: The flywheel kept running all day, the monthly average electricity bill of 8 mechanical punch presses reached USD 14,800, accounting for 19% of the factory’s total production cost.
3. Short die service life and frequent mold maintenance: The average service life of each set of forming dies was only about 120,000 strokes, and the maintenance department needed to spend 12–16 hours per week to repair and grind the dies, occupying a large amount of production time.
4. Low product qualification rate for precision aluminum battery shells: The repeated positioning accuracy of ±0.1mm of mechanical equipment could not meet the dimensional tolerance requirement of ±0.03mm for battery shells, and the customer’s incoming inspection pass rate was only 89.2%.
5. High equipment failure rate and unstable delivery cycle: The clutch and brake components of mechanical punch presses were easy to wear and break down, with an average of 3–4 unplanned shutdown failures per week, often delaying the delivery cycle of auto OEM orders.
6. Failed to pass the green supplier audit of head new energy vehicle OEMs: The OEM’s supplier access standards required the use of low-energy servo stamping equipment and complete carbon emission test data, and the factory’s all-mechanical equipment layout led to two consecutive supplier audit failures, facing the risk of being eliminated from the OEM’s qualified supplier list.

In January 2025, the factory launched a full-line servo punch press transformation project with a total investment of USD 286,000. The core transformation measures are divided into six modules:

1. Equipment replacement: Eliminate all 8 old 110-ton mechanical punch presses, and purchase 8 sets of domestic independent R&D 110-ton servo electric punch presses with full closed-loop control systems.
2. Production line layout re-planning: Reconstruct the stamping workshop streamline layout according to the flexible production characteristics of servo equipment, match automatic servo feeding machines and waste centralized recycling devices for each servo punch, realize one-way flow of raw materials to finished products.
3. Personnel skill training: Cooperate with servo equipment manufacturers to carry out 4 batches of special training for production operators, mold maintenance technicians and quality inspectors, covering servo program editing, slider curve optimization, precision calibration and fault self-diagnosis operation skills.
4. Standardized production SOP formulation: Compile exclusive stamping process operation manuals for new energy high-strength steel and aluminum alloy products, formulate targeted servo slider speed, pressure holding time and stroke parameter standards for each part model.
5. Establish real-time energy consumption and quality data monitoring system: Connect all servo punch presses to the factory’s MES production execution system, realize real-time collection of equipment power consumption, stamping stroke, dimensional detection data and automatic abnormal alarm.
6. Complete third-party energy consumption and precision testing: Entrust a national authorized industrial equipment testing institution to conduct continuous 72-hour full-load performance testing of all servo equipment, generate standardized energy-saving and precision test reports for OEM supplier audit submission.

The following table compares all core production, quality, cost and business indicators of X Factory before transformation (December 2024, mechanical punch production mode) and 12 months after transformation (December 2025, full servo punch production mode), all data sourced from the factory’s official production and financial ledgers:

After 12 months of stable operation of the full servo production line, X Factory has achieved multi-dimensional core harvests in production efficiency, product quality, operation cost and market business:

1. Significant reduction of comprehensive production costs: The factory saves an average of USD 8,740 in electricity bills every month, coupled with the sharp drop in mold maintenance and product rework loss costs, the total annual direct cost savings reach USD 186,240, and the full equipment transformation investment of USD 286,000 can be fully recovered within 14 months, with excellent economic return benefits.
2. Greatly improved production capacity and order delivery stability: The daily output of qualified finished parts increased by 41.1%, the unplanned equipment shutdown times dropped by nearly 90%, the factory completely eliminated the risk of OEM order delivery delay, and obtained the OEM’s 3-year exclusive stamping part supply framework agreement with an annual order amount of USD 4.2 million.
3. Stable promotion of product yield and customer satisfaction: The scrap rate of core high-strength steel structural parts was cut by more than 60%, the incoming inspection pass rate of aluminum alloy battery shells increased to 98.7%, and the OEM issued zero quality complaints to the factory in the whole 12 months after transformation.
4. Successfully passed strict green low-carbon supplier audit: The standardized third-party energy-saving test report and servo equipment carbon emission data provided complete audit supporting materials for the factory, completely solving the core risk of being eliminated from the head new energy OEM qualified supplier list.

In the next 12 months, X Factory plans to carry out secondary intelligent upgrading on the basis of existing servo punch production lines: add AI intelligent material thickness detection modules to each servo equipment, realize automatic real-time adjustment of servo stamping pressure according to material fluctuation; further connect the MES system with the factory’s ERP financial system, realize automatic statistics of single product energy consumption, material loss and production profit data, and build a full intelligent closed-loop production management system.

The 12-month whole-line servo punch transformation practice of X Precision Stamping Factory fully verifies that servo-driven punch press equipment is not only a technical upgrading of stamping production equipment, but also a core strategic transformation that can bring substantial cost reduction, efficiency improvement and market business expansion benefits to stamping processing enterprises. For mid-to-high-end stamping factories serving new energy vehicles, electronics, medical treatment and other emerging high-value manufacturing industries, comprehensive servo equipment transformation has become an inevitable choice to enhance core market competitiveness and avoid being eliminated by downstream high-end supplier audit thresholds.