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The Basic Type E Station is the largest standard tooling assembly in the thick turret system, capable of punching diameters and diagonals up to 4.500" (114.3mm). Designed for maximum scale and material removal, the "Original" or "Standard" E station is a massive, fully guided unit that prioritizes structural mass and stripping power over modern adjustment features.
1. Heavyweight Assembly Components
The E station is a significant mechanical assembly, often weighing over 10kg (22 lbs). Its construction includes:
*The Punch Head (Driver): A wide, flat steel plate that serves as the impact point for the machine's hammer. In the Original configuration, this is a "non-adjustable" fixed head.
*Dual-Column or High-Tension Disc Springs: Because an E-station punch has a massive surface area, the suction (frictional grip) created between the punch and the sheet is extreme. The assembly uses a heavy stack of Belleville disc washers to generate several tons of stripping force, ensuring the punch successfully retracts from the material.
*Precision Guided Body: The guide is a large-diameter cylinder that provides 360-degree support to the punch body. This guidance is critical for maintaining concentricity; even a tiny amount of "cocking" or tilt in a 4.5" tool can cause the punch to collide with the die.
2. Manual Length Adjustment
Like other "Original Style" tools, the E station requires manual maintenance after sharpening:
*Shim-Based Compensation: There is no "click" ring. When the punch face is ground down, the overall height of the tool is restored by adding large-ring shims behind the punch tail.
*Fixed Shut-Height: The assembly must be manually verified with a height gauge after shimming to ensure it meets the machine's required shut-height, preventing the ram from "bottoming out" or failing to complete the cut.
3. Keying and Tool Orientation
*External Keying: The guide body usually features a single large key or keyway to lock the orientation within the turret (typically at 0°).
*Internal Punch Orientation: For shapes (like a 4.5" large rectangle or a custom perimeter tool), the punch body is keyed internally to the guide. In the Original style, this keying is often fixed, meaning the tool is dedicated to one specific angle relative to the sheet.
4. Summary of Application
The Original E Station is primarily used for large-window punching, perimeter blanking, and heavy-duty slitting. Its "Original" design is favored for its sheer durability; when punching at the maximum capacity of a 30-ton or 50-ton press, the solid, shimmed-head design provides the most rigid transfer of force, minimizing the mechanical vibration that can fatigue complex adjustable-style tools.
E station Product Structure Diagram
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*Max.force Tonnage:16 Tonne *Max.sheet thicknesss 6.35mmMS, 3.0mm SS *Min. Dia/Width: AL 0.75xT,MS 1.0xT. SS 2.0xT *PU ejector for size >6mm |
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