H-Type Hydraulic Hand Operated Press Machine is a manually operated press that uses hydraulic force to perform various pressing, bending, punching, and straightening operations. Unlike its motorized counterparts, this machine is powered by a hand-operated hydraulic pump, making it ideal for smaller-scale or low-volume applications where precise control and force are needed without the complexity of electrical systems. Here’s a detailed description:

Key Features:

1. H-Frame Design:

   • The machine has a robust H-shaped frame, providing excellent structural integrity and stability.
   • The frame is typically constructed from heavy-duty steel to handle the force applied during pressing operations without deforming.
   • The open frame allows easy access from the front and sides, making loading and unloading of materials convenient.

2. Hand Operated Hydraulic System:

   • Manual Pump: The hydraulic system is powered by a hand-operated pump. By pumping the handle, hydraulic fluid is pressurized, which moves the piston in the hydraulic cylinder.
   • Hydraulic Cylinder: The hydraulic cylinder provides the necessary pressure to move the ram, exerting force on the workpiece.
   • Pressure Gauge: Many hand-operated presses come with a pressure gauge to help the operator monitor the applied force.

3. Ram/Platen:

   • The ram (also known as the plunger) is the part that moves up and down under the influence of hydraulic pressure. It applies force onto the material positioned on the platen or table below.
   • The ram stroke is controlled manually, with an adjustable stroke length depending on the task at hand.

4. Bed Height Adjustability:

   • The bed height (or working surface) is often adjustable to accommodate different sizes of workpieces, allowing flexibility in various applications. This adjustment is usually done manually by loosening bolts and repositioning the bed.

5. Control and Safety:

   • As it is manually operated, the user has direct control over the press’s speed and pressure, ensuring precise operations.
   • Safety features may include overload protection to prevent the press from applying too much force and damaging the machine or the workpiece.

Applications:

1. Bending:

   • Used for manually bending sheet metal or small metal bars into specific shapes.

2. Punching:

   • This press can be used for punching holes or patterns into metal or plastic sheets by applying concentrated pressure with a die set.

3. Press Fitting:

   • Press fitting of bearings, bushes, and other components into assemblies is a common use. The manual control allows precise alignment and insertion.

4. Straightening:

   • This press is ideal for straightening bent or deformed metal parts, particularly in workshops where precise, low-volume work is required.

5. Small-Scale Forming:

   • It can be used for small metal forming tasks, such as creating small stamped parts or shallow forms.

Advantages:

• Cost-Effective: Being hand-operated, these machines are less expensive than their motorized or automated counterparts.
• Simple Operation: Since it doesn’t require any power source other than manual effort, it is easy to operate and maintain.
• Portability: Lighter in weight compared to motorized hydraulic presses, making them suitable for small workshops or mobile operations.
• Precision Control: The operator has full control over the speed and pressure applied, which is useful for delicate or precise operations.
• Low Maintenance: Fewer moving parts and no electrical components make this press easy to maintain and repair.

Technical Specifications (Example):

• Capacity: Typically ranges from 5 ton to 150 tons, depending on the model.
• Ram Stroke: Adjustable stroke length, usually between 100 mm and 500 mm.
• Bed Width: The table size can vary but is often around 500 mm x 300 mm or larger.
• Weight: Depending on the size, these machines can weigh between 50 kg to over 500 kg.
• Frame Construction: Heavy-duty steel frame for durability.

Common Industries:

• Workshops and Small Fabrication Units: For tasks like press fitting, bending, and small-scale forming.
• Automotive Repair: Used in garages for straightening and press fitting components.
• Metalworking: Ideal for small-scale metal forming, stamping, and bending tasks.
• Agricultural Equipment Repair: Handy for on-site repairs, such as straightening metal components.