YANGLI Advanced Metal Forming:
Mastering the Physics of Metal Flow
Link Motion. Four-Point Stability. Extra-Wide Beds. Engineered for complex deep drawing.
When Tonnage Isn't Enough. Precision in Motion.
In high-end deep drawing, the challenge isn't just applying force—it's managing velocity. As the authorized partner for Yangli Group in South India, GMT Engineers provides the specialized platforms required for complex automotive body panels and large-format appliance stamping.
By utilizing Yangli's world-class link-motion technology, we help Tier-1 manufacturers move beyond the limitations of standard crank presses to achieve controlled metal flow that behaves exactly as your simulations predicted.
Why Link Motion Beats the Crank
"Why can't I just slow down my standard press for deep drawing?"
In a traditional Crank Motion, the slide speed follows a fixed sine wave. If you want to slow down the draw, you have to slow down the entire cycle, killing your productivity.
The Link Motion Advantage:
The Result: High-Precision Drawing with High-Speed Productivity. GMT customers report a significant reduction in scrap rates on complex parts when switching from conventional crank to LS4 link motion.
The YANGLI LS4 Series: The Multi-Link "Unicorn" of Deep Drawing
The Yangli LS4 Series is specifically engineered for large-scale, complex forming. By utilizing Yangli's sophisticated multi-link drive mechanism, the LS4 optimizes the "time-under-tonnage" to ensure perfect material distribution.
Yangli's Optimized Drawing Velocity
The link motion allows the slide to approach the work quickly, slow down significantly during the actual draw, and then return at high speed.
Reduced Springback & Tearing
By maintaining a constant, slower velocity during the forming phase—a hallmark of Yangli's precision engineering—the material flows into die cavities naturally, drastically reducing internal stresses.
Closed-Type Four-Point Stability
The LS4 features a massive, stress-relieved frame manufactured in Yangli's state-of-the-art production facilities. This ensures that even on extra-wide beds, slide tilt is virtually eliminated.
Engineered for Scale: Extra Wide Beds & Shut Heights
Standard machines often force engineers to compromise on die design due to space constraints. GMT eliminates these bottlenecks by offering highly customizable geometric configurations for the infrastructure and automotive sectors.
Extra Wide Beds
Designed to accommodate multi-stage progressive dies or massive single-stage drawing tools without sacrificing structural rigidity.
Extra Shut Height
Provides the vertical clearance required for deep-form parts and heavy-duty die sets, allowing for more versatile tool integration.
Foundational Precision
Like all YANGLI presses, these frames are double-annealed and machined on PAMA/OKUMA CNC floor borers to ensure that "extra wide" doesn't mean "less accurate".
Frequently Asked Questions
01What is the primary benefit of a 'Four-Point' press like the LS4?
A four-point press distributes the tonnage across four separate connections on the slide. This is critical for extra-wide parts or off-center loads, as it prevents "slide tipping." It ensures the punch enters the die perfectly parallel, even if the drawing force is concentrated on one side of the bed.
02Can the LS4 Series be integrated into automated transfer lines?
Absolutely. The LS4 is designed as a foundational unit for high-volume automation. It features integrated synchronization controls for 3-axis transfer systems and robotic de-stackers, making it the centerpiece of modern manufacturing cells.
03Does GMT provide die-design consultation for the LS4?
While we are machine experts, we work closely with your die-makers during the quotation stage. By analyzing your STEP/IGES drawings, we ensure the shut height, stroke, and link-motion curve are perfectly matched to your most challenging component.
Take Command of the Flow.
Don't let legacy crank motion limit your design possibilities.