CNC Jig Borer
The CNC jig boring machine completes drilling, enlarging, boring, reaming, milling and tapping in a single setup. It is especially effective for machining precision holes in engine casings, where accuracy and repeatability are critical.
It handles difficult materials such as nickel-based superalloys, titanium alloys, stainless steel, aluminum–magnesium alloys, alloy steels and tool steels.
Typical applications include semi-finishing and finishing of high-precision hole systems in aero-engine casings, discs and rings.
Equipped with X, Y and Z axes. Optional CNC rotary table (C-axis) or CNC cradle table (A/C-axis) is available, enabling full five-axis machining.
All servo motors, ball screw nuts and spindle bearings are cooled by a constant-temperature system to remove heat generated during high-speed operation. This improves accuracy retention over long machining cycles.
| Worktable | ||
| Worktable size (mm) | 1200×1600 | |
| Worktable type | T-slot | |
| T-slot size | 7-22H12 | |
| Max. worktable load capacity (kg) | 3000 | |
| Max. Workpiece Diameter height (mm) | 1000 | |
| Axes Travel | ||
| X-axis travel (mm) | 1600 | |
| Y-axis travel (mm) | 1200 | |
| Z-axis travel (mm) | 1000 | |
| C-axis rotation range (°) | n×360 | |
| Distance from table surface to spindle nose (mm) | 350–1350 | |
| Spindle | ||
| Spindle taper | HSK-A100 | |
| Spindle speed range (r/min) | 20–10000 | |
| Speed selection | Fully programmable | |
| Spindle motor power S1/S6 (kW) | 50/70 | |
| Spindle motor torque S1/S6 (N.m) | 400/560 | |
| Tool Magazine | ||
| Number of tools | 40 | |
| Tool interface type | HSK-A100 | |
| Rated tool clamping force (kN) | 60 | |
| Max. tool diameter (mm) | Ø125 (with adjacent tools) | |
| Ø250 (without adjacent tools) | ||
| Max. tool length (mm) | 500 | |
| Max. tool weight (kg) | 25 | |
| Tool change time, tool-to-tool (s) | 4 | |
| Tool change time, cut-to-cut (s) | 10 | |
| Tool selection mode | Random bidirectional | |
| Drive & Feed | ||
| Feed speed range (X/Y/Z) (m/min) | 0–10 | |
| Rapid traverse (X/Y/Z) (m/min) | 20 | |
| Position feedback (X/Y/Z) | Linear scale | |
| Machine Accuracy (GB/T17421) | ||
| Positioning accuracy (X/Y/Z) (mm) | 0.004 | |
| Repeatability (X/Y/Z) (mm) | 0.002 | |
| Standards & Compliance | ||
| GB/T 14660.1-2023: CNC vertical jig boring machine – Part 1: Accuracy testing GB/T 17421.1-2023: Machine tool test code – Part 1: Geometric accuracy under no-load or quasi-static conditions GB/T 17421.2-2023: Machine tool test code – Part 2: Determination of positioning accuracy and repeatability of numerically controlled axes | ||
| Working Environment | ||
| Total power (kVA) | 150 | |
| Power supply | 380V±10%/50Hz±1Hz/3-phase AC | |
What types of parts are suitable for machining on the TK42120 CNC jig borer?
The TK42120 is designed for high-precision hole-system machining. It is suitable for mould components, precision fixtures, aerospace parts and other workpieces that require accurate drilling, reaming, tapping and fine milling in a single setup.
What is the positioning accuracy of the TK42120?
The positioning accuracy of the X, Y and Z axes is 0.004 mm.
How can machining accuracy be maintained on the TK42120?
Accuracy can be ensured by:
- regularly checking and calibrating geometric accuracy, including guideway straightness, squareness and spindle concentricity
- monitoring tool condition to ensure sharpness and replacing worn tools in time
- setting appropriate cutting parameters such as speed and feed
- ensuring the workpiece is clamped firmly and correctly positioned