Deep Hole Drilling Applications
These example cases for deep hole drilling portray typical applications, processes, and tolerances achievable with proper tooling and equipment. Applications for deep hole drilling exist across nearly all manufacturing sectors, with new applications emerging regularly.
The high depth-to-diameter ratio holes in these applications show extreme tolerances of straightness, roundness, concentricity, surface finish, etc. Although these are not actual parts, these are typical of what UNISIG machines can achieve.
Submit your application for an engineering review. Applications exist beyond these examples.
Click on an image to view details.
Aircraft Landing Gear - Drill and contour landing gear actuating cylinders while holding an extreme straightness tolerance in high-strength alloys.
Operation: BTA solid drill, Bottom contour forming, Center pressure hole drill
Machine: B500
Oil Field Exploration - Drill holes at extreme depth-to-diameter ratios in long workpieces without sacrificing accuracy in roundness or wall thickness.
Operation: Pull boring with boring bar in tension, roller burnishing for surface conditioning
Machine: B600
Hydraulic Cylinder Inside Bore - Finish an existing bore to mirror-like surface finish requirements for superior hydraulic cylinders.
Operation: Combination skiving and roller burnishing in one pass after port is welded to part
Machine: S600
Heat Exchanger Tube Sheet - Thousands of accurate holes are achievable quickly and efficiently on a multi-spindle tube sheet drilling machine.
Operation: BTA Solid Drilling on multiple spindles; 2160 holes per part
Machine: USC-TS50
Fuel Rails for Diesel Engines - Drill holes at extreme depth-to-diameter ratios in long workpieces without sacrificing accuracy in roundness or wall thickness.
Operation: Gun drilling
Machine: UNI with Automation
Oil Field Downhole Exploration - Trepan holes at extreme depth-to-diameter ratios in long workpieces without sacrificing accuracy in roundness or wall thickness.
Operation: Trepanning from Solid; Reusable Core Remaining
Machine: B630
Fuel Injector Bodies - High precision, high volume parts require multiple holes at extreme tolerances, achieved by a 3-spindle gundrilling center with robotic and conveyer automation.
Operation: Three step gundrilling
Machine: UNI with Automation
Fluid Assembly Ends - A series of holes is drilled in a block of steel for hydraulic fraturing equipment. A heavy workpiece and strict tolerances require capable machines and tools.
Operation: BTA Solid Drilling
Machine: USC-100
