Varinelli

Multi-Hole Tube Sheet Broaching Machine

High-Precision Internal Machining for Heat Exchanger Tube Support Plates

Our multi-hole broaching machines are specifically designed for heat exchanger tube support plate machining, enabling precise internal shaping of holes after drilling operations.

Engineered for the energy sector including nuclear, power generation, oil & gas, and petrochemical industries, this system delivers high accuracy and repeatability while significantly reducing machining steps thus increasing productivity.

Engineered for Tube Support Plate Finishing

Unlike drilling, which creates the hole, broaching is used to finish and shape the internal geometry of each hole
More precisely:

Remove material with a multi-tooth cutting tool (broach)
Achieve final tolerances and geometry
Ensure proper tube fit and alignment
Broaching completes in one pass what would normally require multiple machining operations.
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What is Broaching

Broaching is a machining process where a specialized tool with progressively larger cutting teeth is pulled through a hole to achieve the final shape and finish in one pass.
For tube support plates:

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Drilling

Creates rough holes
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Broaching

Finishes all holes to exact dimension
4-lobe or 3-lobe holes finished in one pass

High-Precision Multi-Hole Processing

This system allows:

  • Simultaneous or sequential broaching of multiple holes
  • Consistent internal geometry across thousands of holes
  • High repeatability for critical applications

Ideal for:

  • Tube support plates (TSP)
  • Baffle plates
  • Heat exchanger internal structures

 

Technical Specifications

  • Machine type: BVMVX 25 x 2000 x 500
  • Number of broaching stations: 6
  • Broaching area: Ø 5000 mm
  • Broaching speed: 0–12 m/min
  • Plate thickness capacity: up to 40 mm
  • CNC control: Siemens 840D

Structural Design & Key Features

Gantry Support for Broaching System

Robust gantry structure ensures stability during high-force broaching operations.

Multi-Axis Control

Advanced CNC control enables precise positioning and repeatable hole finishing across large plates.

Linear Guideways

Heavy-duty linear guide systems ensure smooth and accurate movement of broaching heads.

Tool Handling & Storage

Integrated tooling systems improve productivity and reduce setup time.

Efficient Coolant System

Optimized coolant delivery for improved tool life and cutting performance.

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Why Use Broaching After Drilling?

Compared to drilling alone:

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Creates complex non-circular shapes
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Achieves tighter tolerances
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Improves surface finish
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Ensures perfect tube fit
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Eliminates secondary machining steps
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Ideal for high-volume production
multi spindle drilling machine burlington

Integrated Production Line Capability

The broaching machine is typically integrated with:

Multi-spindle drilling machines
Plate buffing / deburring systems
Complete heat exchanger tube sheet production lines
This creates a fully optimized manufacturing workflow:

Drilling → Broaching → Finishing

Industry Applications

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Nuclear heat exchangers
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Power generation systems
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Oil & gas processing equipment
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Petrochemical plants
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Heavy industrial manufacturing

Related Solutions

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Multi-Spindle Tube Sheet Drilling Machines

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Plate Buffing and Polishing Systems
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Complete Tube Sheet Production Lines

Request Technical Consultation

Contact our team to discuss your production requirements and optimize your tube sheet manufacturing process.

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