Universal Swivel Milling Angle Heads (BOD YW Series)

Universal Swivel Milling Angle Heads (BOD YW Series)

Welcome to the BOD YW Series, featuring our heavy-duty, adjustable universal swivel milling angle heads engineered to perform multi-angle machining on BT40 and BT50 vertical machining centers (VMC), horizontal machining centers (HMC), and gantry mills. Designed by Beijing BOD Technology Co., Ltd., this series includes the heavy-duty DK90-BT50 YW & WXER Series (comprising DK90-BT50-YW16, DK90-BT50-YW20, and DK90-BT50-WXER32) and the DK90-BT40 YW16 model. Unlike standard fixed 90° angle heads, the YW Series features a calibrated, swiveling spindle housing that allows operators to adjust and lock the cutting spindle at custom angles. This flexibility enables compound-angled drilling, sloped surface milling, and side tapping without manually repositioning or refixturing large, heavy workpieces on 3-axis and 4-axis machine tools.

Calibrated Swivel Angle Mechanism for Reduced Setup Times

The primary engineering benefit of the BOD YW Series is its adjustable swiveling housing. The integrated, graduated scale allows operators to rotate and lock the output spindle at any intermediate angle. This adjustment enables standard vertical or horizontal mills to machine complex angled pockets, sloped chamfers, and compound-angle holes. By executing these features in a single setup, workshops can eliminate secondary workholding fixtures, minimize positioning errors caused by multiple manual clampings, and reduce non-productive setup times.

Symmetrical QT500-7 Ductile Iron Casing Built for High Cutting Torque

Adjustable swivel joints are naturally subjected to complex axial and radial cutting forces. To counteract deflection and absorb cutting vibrations, BOD YW series angle heads are manufactured with heavy-duty structural components:

  • Monoblock Casings: Cast from high-grade QT500-7 Ductile Cast Iron.

  • Stress Relief: The housings are subjected to artificial aging and cryogenic stress-relief treatments to stabilize the metallurgical structure.

  • Torque Support: This robust casing design ensures the unit remains highly rigid under heavy cutting loads, supporting a maximum output cutting torque of up to 65.0 Nm on BT50 series models.

Gleason Precision Ground Gearing and Stable Bearing Configurations

To maintain precise rotational accuracy when operating at tilted angles, the internal drive system is built to tight mechanical tolerances:

  • Gleason Spiral Bevel Gears: Made of 20CrMnTi Alloy Steel, carburized and quenched to a surface hardness of HRC 58-62, and ground to ISO Grade 4 precision. Transmission backlash is limited to ≤ 15 arcmin, and full-load noise is kept to ≤ 70 dB.

  • Clamping Versatility: Spindles accept standard ER collets up to ER32 (such as on the WXER32 model), allowing clamping capacities up to Ø20.0 mm.

  • P4 Spindle Bearings: Supported by high-precision, preloaded P4 class angular contact bearings, the spindle assembly minimizes tool runout and maintains alignment under heavy radial and axial side-milling forces.

FAQ

Frequently Asked Questions

Common questions about our products and services.

A: Fixed 90° angle heads hold the output spindle at a permanent, unchangeable 90-degree angle relative to the machine spindle, restricting operations to standard lateral machining. Universal swivel angle heads (YW & WXER series) feature an adjustable, swiveling housing. This design allows operators to rotate and lock the output spindle at any desired angle, making them suitable for machining sloped surfaces, angled pockets, and compound-angled holes.
A: The DK90-BT50 YW & WXER series is designed for heavy-duty BT50 spindle interfaces. The series comprises the DK90-BT50-YW16, DK90-BT50-YW20, and DK90-BT50-WXER32 models. It can transmit cutting torque up to 65.0 Nm and accepts ER collets up to ER32, allowing it to clamp cutting tools with diameters up to Ø20.0 mm.
A: Alignment and stability are maintained through a combination of a rigid, stress-relieved QT500-7 ductile iron casing and preloaded P4 class high-precision angular contact bearings. The swiveling joint features a secure locking flange to prevent rotation during cutting. Additionally, the internal drive uses ground Gleason spiral bevel gears (HRC 58-62, ISO Grade 4 precision) to ensure stable torque transfer and low backlash (≤ 15 arcmin) under heavy axial and radial loads.