Learn how to complete tandem press brake installation correctly with this practical guide. Discover the complete installation workflow, foundation preparation, machine leveling, assembly, alignment, and commissioning procedures for reliable long-term operation.

Introducción

Proper tandem press brake installation is the foundation of safe operation, high bending accuracy, and long-term machine reliability. Unlike a standard press brake, a tandem press brake consists of two synchronized machines working together as one system. Even small installation errors, such as an uneven foundation or inaccurate frame positioning, may affect synchronization performance and reduce bending accuracy.

A successful installation involves much more than assembling machine components. Foundation preparation, machine leveling, hydraulic assembly, tooling alignment, and final commissioning all contribute to the overall performance of the equipment. Following a standardized installation procedure not only shortens commissioning time but also helps prevent future maintenance issues.

This guide explains the complete tandem press brake installation process based on a typical installation workflow. Although the animation demonstrates the general procedure, the actual installation method may vary depending on the machine model, foundation conditions, and manufacturer requirements.

What Is Tandem Press Brake Installation?

Tandem press brake installation is the complete process of preparing the foundation, assembling two synchronized press brakes, and adjusting them to operate as a single machine.

Compared with installing a conventional press brake, tandem press brake installation requires much higher mechanical accuracy because both machines must maintain identical positioning and movement throughout every bending cycle. Proper installation ensures stable synchronization, consistent bending accuracy, and reliable long-term operation.

For this reason, every installation stage should be completed carefully before the machine enters production.

Before You Start

Before beginning tandem press brake installation, the installation site should be inspected carefully.

Verify that the foundation has been constructed according to the manufacturer’s drawings and has reached the required concrete strength. Prepare all necessary lifting equipment, leveling instruments, adjustment shims, anchor bolts, and installation tools before unpacking the machine.

Since tandem press brakes are large and heavy pieces of equipment, all lifting operations should be performed using appropriate lifting devices by qualified personnel. At the same time, inspect all delivered components to confirm that no damage occurred during transportation.

Proper preparation creates a solid foundation for the entire installation process and significantly improves installation efficiency.

Tandem Press Brake Installation Workflow

Stage 1: Foundation Preparation

A stable foundation is the starting point of successful tandem press brake installation.

Begin by excavating the foundation pit according to the installation drawing. After excavation, harden the bottom and surrounding floor surface before constructing the retaining walls. Build the reinforced concrete foundation using 20 mm diameter reinforcing bars while reserving sufficient space for secondary grouting after the machine has been positioned.

Once the reinforcement has been completed, install the formwork and pour C35-grade concrete. After the initial curing period, remove the formwork and continue curing the concrete daily until it reaches the specified strength. A properly cured foundation provides the structural stability required for long-term machine operation.

Stage 2: Frame Positioning and Leveling

After the concrete foundation has fully cured, place the heavy-duty leveling shims at the designated positions and carefully lower the machine frames onto them.

Using a precision level gauge, measure the level at the throat opening of each frame and continuously adjust the shims until both frames are level. During this stage, measure the distance between the machine frames and the surrounding foundation walls, pre-install the base pads, and adjust the positioning devices to ensure both machines are installed symmetrically.

Accurate leveling is one of the most important steps in tandem press brake installation because synchronization accuracy depends heavily on the mechanical alignment of both machines.

Stage 3: Machine Frame Assembly

With both machine frames correctly positioned, continue assembling the main mechanical structure.

Install the backgauge assembly and hydraulic oil tank before tightening the primary structural bolts. Next, install the upper and lower wedge blocks, followed by the workbench upright plate. The fastening bolts should be installed gradually rather than fully tightened immediately, allowing sufficient adjustment during subsequent assembly.

This staged tightening method helps maintain structural accuracy throughout the installation process and reduces the possibility of alignment errors.

Stage 4: Hydraulic System Installation

Once the machine frame has been assembled, install the hydraulic cylinders and tighten all mounting bolts securely.

Continue by installing the valve manifold and connecting all hydraulic pipelines according to the hydraulic schematic. Afterward, install the ram by connecting the lifting shaft to the hydraulic cylinders. The rear mounting bolts should be installed using the same procedure as the front mounting bolts to ensure balanced support across the entire ram.

Before proceeding, carefully inspect every hydraulic connection to ensure there are no loose fittings or installation errors.

Stage 5: Tooling Installation and Precision Alignment

After completing the main machine assembly, install the clamping plate, upper punch, crowning worktable, and lower die.

Place a precision level gauge at the center of the lower die to verify the levelness of the worktable. If adjustment is required, loosen the fastening bolts on both sides and gradually adjust the center adjustment screw until the die surface becomes level.

Next, lower the ram slowly without allowing the punch to contact the lower die. Check whether the centerlines of the upper punch and lower die are aligned. If necessary, loosen one clamping plate and adjust the opposite side until both centerlines coincide. Finally, apply slight pressure between the punch and die to complete the final alignment before tightening both clamping plates.

Proper tooling alignment directly affects bending accuracy and should always be completed before the machine enters operation.

Stage 6: Final Assembly and Operational Testing

Complete the remaining installation by mounting the protective covers, front support mechanism, and all remaining hydraulic and electrical pipelines.

Before secondary grouting, perform a complete operational test to verify synchronization performance, hydraulic operation, electrical functions, and machine movement. Only after confirming that the machine operates correctly should the reserved foundation holes be filled with concrete or grout.

After the secondary grouting has completely cured, tighten all foundation bolts according to the specified torque requirements. At this point, the tandem press brake installation is complete and the machine is ready for commissioning and trial bending.

Trial Verification

Before beginning production, perform a dry run followed by a trial bending test.

Verify that both machines move synchronously, the ram operates smoothly, and the upper and lower tooling remain correctly aligned throughout the bending cycle. Any abnormal movement, vibration, or synchronization deviation should be corrected before continuous production begins.

In practical applications, careful verification immediately after tandem press brake installation can significantly reduce future maintenance work and improve long-term production stability.

Notas importantes

Although the installation principles described in this guide apply to most tandem press brakes, actual installation procedures may vary according to the machine model, hydraulic configuration, foundation design, and manufacturer specifications.

The workflow presented in this guide and accompanying animation should therefore be regarded as a general technical reference. During actual tandem press brake installation, operators should always follow the equipment installation manual and consult the manufacturer’s technical support team whenever necessary.

Consejos de mantenimiento

Proper installation is only the first step toward reliable machine performance. Regular inspection after tandem press brake installation helps maintain synchronization accuracy and extends the service life of the equipment.

• Recheck all foundation and structural bolts after the initial commissioning period.
• Inspect hydraulic pipelines regularly for leaks or loose connections.
• Verify the levelness of both machine frames periodically, especially after long-term operation.
• Keep the guide rails, tooling, and moving components clean and properly lubricated.
• Perform synchronization checks before processing long workpieces to ensure both machines operate consistently.
• If the machine is relocated, repeat the complete tandem press brake installation and leveling procedure instead of simply repositioning the equipment.

Preventive maintenance helps minimize unexpected downtime and ensures stable bending accuracy throughout the machine’s operating life.

Preguntas frecuentes

1. Why is foundation preparation so important during tandem press brake installation?

The foundation supports the entire machine and directly affects leveling, frame stability, and synchronization accuracy. An uneven or insufficiently cured foundation may cause installation deviations that reduce bending precision and increase mechanical stress during operation.

2. How can I verify whether both machines are properly aligned?

After installation, check the frame levelness, the alignment of the upper punch and lower die, and the synchronization of both machines during a dry run. Trial bending with a long workpiece is also an effective way to confirm that both press brakes operate together correctly.

3. Is secondary grouting necessary?

Yes. Secondary grouting fills the reserved foundation gaps after the machine position has been confirmed. It improves overall structural rigidity, distributes the machine load more evenly, and helps maintain long-term installation stability.