Double Head Tapping Machine | Handle End Threads
A double-head tapping machine cuts internal threads into both ends of bent aluminum handle rings in one setup - load the part, both heads tap at once.
Key Specifications
- Materials
- Bent aluminum handle rings, drilled ends
Key Features
- Taps both handle ends simultaneously with twin spindles
- One load - no re-fixturing between the two threads
- Chucked taps produce clean internal threads in aluminum
- Vise-style holders locate each ring for repeat tapping
How Are Both Ends of a Handle Ring Tapped in One Setup?
Short answer: With twin tapping spindles that thread both ends at once. This video shows a double-head tapping machine cutting internal threads into the drilled ends of bent aluminum handle rings - the operator loads one part into the holders, both chucked taps run together, and the finished close-ups show clean, ready-to-fasten threads on both ends.
What the Video Demonstrates
| Stage | Equipment | Result |
|---|---|---|
| Load | Manual placement into end holders | Both drilled holes aligned to taps |
| Tap | Twin powered spindle heads | Two internal threads cut simultaneously |
| Unload | Part lifted off the holders | No re-fixturing between ends |
| Check | Thread close-ups in hand | Clean, complete threads shown |
Key Applications
- Pull handle rings needing screwed mounting ends
- Aluminum hardware with internal threads in tube ends
- High-count tapping of identical paired holes
- Finishing step after handle bending operations
Twin-Head Tapping vs. Single-Spindle Re-Tapping
| Criterion | Single spindle | Twin-head machine (as shown) |
|---|---|---|
| Setups per part | Two, re-load each end | One load, both ends at once |
| Cycle time | Doubled | Halved |
| Thread alignment | Depends on re-fixturing | Fixed in one placement |
| Operator work | Repeat clamping | Load, run, unload |
FAQ
What parts are threaded in this video? Bent rectangular aluminum handle rings - the drilled holes at both open ends receive internal threads.
Do both heads tap at the same time? Yes - the twin spindle heads run together so both handle ends are threaded in a single cycle.
Can the machine handle other thread sizes? Taps and holders are changed to match your hole diameter, thread pitch and part shape on request.