DES-300/400 Series All-Electric Servo Turret Punch Press

1. Using a servo motor as the punching power source delivers high precision, high efficiency, low noise and energy saving. It can perform cutting, forming, rolling ribs, marking and many other processes.

2. No hydraulic pipe joints, which reduces oil leakage, aging and other problems and results in low maintenance cost.

3. Mechanical transmission, electrical and pneumatic components all adopt imported brands.

4. A powerful CNC system with a friendly interface, easy to learn and use, automatic nesting and automatic tool addition.

5. Multi-axis coordinated control.

6. Intelligent quiet punching.

Product Advantages

The Bed

The frame is welded from steel plate and stress-relieved by integral tempering to remove internal stress. It is machined in one clamping on a large CNC boring and milling machining center.

Wide Bed Design

The wide bed design gives a high-rigidity, heavy closed frame with better lateral stiffness and strength for excellent stability.

The Turret

The thick turret adopts a bushed (inlaid) structure that extends die life, provides good guidance and maintains high accuracy.

The Ball Screw

A large-lead ball screw with double linear guideways delivers fast traverse, high positioning accuracy and low noise.

The Table

The electrically lifting table makes die change and routine maintenance easy and convenient.

The Clamps

High-performance fully automatic floating clamps keep the workpiece flat and distortion-free during processing. The slide connects to the clamp through a dovetail groove, allowing easy movement with high precision.

The Clamp Slide

The clamp slide is made of high-strength ductile iron, quenched and tempered, with a black-oxide finish that gives it a brown, rust-resistant surface. Internal stress is removed and a scale is fitted for accurate clamp positioning.

Centralized Lubrication

A centralized grease automatic lubrication system is controlled by the CNC, which supplies lubricant at set intervals and quantities. The system warns when the grease reservoir is low.

Safety Device – Die-in-Place Detection

A die-installed detection rod checks that each tool is correctly seated. If a die is not properly in place, the system alerts the operator, avoiding damage to the die and other components.

Safety Device – Plate Deformation Anti-collision

Plate-deformation detection rods are mounted on both sides of the turret. If a sheet deforms beyond a safe limit, it contacts the rods and the machine stops, preventing collisions and protecting both equipment and workpieces.

Working Table

The high-density brush and universal-ball composite table keeps the sheet moving smoothly with low noise while reducing scratches on the workpiece surface.

Turret Tooling

Using internationally standard 85-series thick-turret dies, the tooling offers good guidance, high surface hardness and strong wear resistance, supporting punching, flanging, rolling and other processes.

Calculation of Punch Tonnage

The punching force required can be calculated from the punching shape and sheet thickness. The following is the calculation for a punch with a flat (non-inclined) edge.

· Punching force (kN) = punch perimeter (mm) × sheet thickness (mm) × shear strength of material (kN/mm²)

· Punch perimeter: the sum of the lengths of every side of the shape.

· Sheet thickness: the thickness of the sheet to be punched through.

· Shear strength of material: a physical property determined by the material.

Example: punching a φ25 hole in a 2 mm thick cold-rolled plate, the punching force is calculated as follows