Precision Bore Honing Machines

In high volume applications, Engis precision bore honing systems are the unsurpassed solution for forward thinking manufacturers to:  

• Reduce labor costs through automated systems
• Lower cost per bore through long tool life
• Achieve predictable, consistent results (SPC values >2.0 Cpk)
• Improve bore quality
• Eliminate rejects/rework
• Require less frequent part inspection
• See shorter cycle times
• Realize higher production rates

Streamline Your High-Precision Tight Tolerance Hole Finishing with Engis Machines

The new Engis Hybrid solution streamlines workflow by integrating single-pass bore finishing with a multi-stroke honing process in a single machine, thereby reducing the number of steps required to achieve tight tolerances and high precision when finishing bored components.

The new technology allows users to achieve exceptional precision when finishing bore components.  It also produces sharper, burr-free corners on cross holes and metering edges within the part.  The Hybrid can easily be automated producing up to 120 parts/hour.

This single-step system, designed for high-volume production of hydraulic cartridge valves and servo valve bushings, can finish hundreds of thousands of bores annually - transforming rough bores into finished products more efficiently and with greater throughput.

Engis Hybrid Bore Honing Machine Benefits: 

• Full CNC controls
• Higher precision (bore size control within 1 micron)
• Sharper corners on cross-holes and metering edges
• Increased efficiency and production rates
• Less manual intervention
• Automatic gauging and size compensation of the roughing process
• Reduced floor space requirement
• Lower overall cost per piece

Small Production Machine (SPM)

The SPM series of machines is designed to meet the needs of job shops for small to medium size parts.   Available in 4, 6, 8 and 10 spindle models, these systems are primarily for bores up to 51mm (2”) diameter.

Features:

• Servo fed column design
• 457mm (18”) stroke
• Mitsubishi full CNC controls capable of supporting optional advanced features
• Class 7 duplex spindle bearings
• 1-1/16” diameter ASA spindles
• Pre-lubricated for life linear slides and ball screw
• Pneumatic counterbalance on head
• Electro-mechanical, cam-style precision indexer

Optional Configurations Include:

• Extended stroke lengths
• Higher horsepower motors (UM)
• Siemens, Allen-Bradley or Schneider electric controls packages

Large Production Machine (LPM)

The LPM series of machines is designed to meet the needs of job shops for medium to large size parts. Available in 4, 6 and 8 spindle models, these systems are primarily for bores up to 152mm (6”) diameter.

Features:

• Servo fed column design
• 635mm (25”) stroke
• Mitsubishi full CNC controls capable of supporting optional advanced features
• Class 7 duplex spindle bearings
• 1-3/8” diameter ASA spindles
• Pre-lubricated for life linear slides and ball screw
• Pneumatic counterbalance on head
• Electro-mechanical, cam-style precision indexer

3-Axis Flexible Performance Machine (FPM-3X)

Manufacturers of large hydraulic valve bodies face a challenge aligning and finishing bores once the bodies have been stacked. The FPM-3X enables bore finishing after stacking of the valves, improving overall cylindricity and roundness.

Features: 

• Linear bearing vertical slide with ball screw feed and 750mm (30”) stroke
• BT-40 style spindle with hydraulic drawbar arrangement
• X-Y axis linear bearing horizontal slide base
• 8 – 13 pocket automatic tool changer
• Wireless probe system for precise bore location

Customized Machine Designs

Not every bore finishing application fits neatly onto a standard machine platform. In those cases, our engineers will design a unique system around the application which will optimize the part geometry at minimal cycle times and costs. With over thirty years of application and manufacturing experience, you can have confidence that a custom solution from Engis® will put you ahead of your competition and on the cutting edge of your industry. We have a number of custom designed bore finishing solutions for the hydraulic, automotive, compressor and firearm markets in full production throughout the world.

Customized Machine Designs Examples from the Specialty Series:

• In-line transfer system
• Concentricity establishing model
• Automated pressing, polishing and bore finishing model
• Multi-column system for large parts including bore finishing, gauging, brushing, face deburring and marking
• Machines with special multi-spindle arrangements capable of simultaneously finishing multiple bores in a part

 Advanced Gauging Systems

• Computer aided gauging solutions with multiple graphical output formats
• Static and dynamic air gauging for precision bore geometry analysis
• Real-time data insures improved process control
• Complete statistical process control (SPC) and customized data reporting
• Report data to any or all of the following: machine, cell or customer’s network
• Industrial tool size reporting via custom routines

For lower volume applications, Engis multi-stroke honing systems provide maximum flexibility for change-overs along with advanced safety features.