PRODUCTS & SOLUTIONS

JNP Co., Ltd

Precision Tool Machining JNP Co., Ltd

Diamond Segment Laser Welding & Inspection Automation Line Diamond Segment Laser Welding & Inspection Automation Line

Line Overview

An integrated automation line that aligns and tack-welds diamond segments onto the shank (circular tool body), performs main welding with a fiber laser, inspects the weld strength by torque, and then connects transfer and final grinding of the finished shank. A central 6-axis collaborative robot handles the workpiece between each process to achieve unmanned continuous production.

Overall Process Flow

Process flow diagram of the diamond segment laser welding & inspection automation line

▲ Alignment / Tack-welding → Laser main welding → Torque inspection → Transfer / Final grinding (handled by a central 6-axis collaborative robot)

Process Details

STEP 01 · LOADING

Diamond Segment Alignment & Tack Welding

Diamond segments are aligned in the correct positions around the outer edge of the shank disc, and tack welding is performed in preparation for the subsequent main welding. Alignment precision is a critical upstream step that determines the final tool quality.

Diamond segment alignment & tack-welding process

STEP 02 · WELDING

Fiber Laser Main Welding

The tack-welded segments and shank are firmly joined by fiber laser main welding. Localized heat input minimizes distortion, and a uniform weld bead ensures joint strength.

Fiber laser main welding process

STEP 03 · INSPECTION

Weld Strength Torque Inspection

Torsion (torque) is applied to the welded segments to test joint strength and judge pass/fail. Full or sample inspection guarantees line quality in real time.

Weld strength torque inspection process

STEP 04 · UNLOADING

Transfer & Final Grinding

Shanks that pass inspection are transferred to the next process, and the finished parts are completed by final grinding. The detailed structure of the final grinding process can be found on a separate automation page.

Transfer & final grinding process

View Shank Grinding Automation →

Benefits

  • Fully unmanned, continuous automation across alignment, welding, inspection, and grinding
  • Collaborative-robot handling between processes ensures cell flexibility and safety
  • Localized laser welding minimizes distortion and uniformizes joint quality
  • Built-in torque inspection guarantees quality in real time within the line
  • Eliminates human variation to stabilize diamond tool quality

Applications

  • Manufacturing of diamond segment tools (cutting discs / segments)
  • Precision cutting-tool lines requiring segment-to-shank joining
  • Post-process automation for diamond cutting / grinding tools
  • Diamond tool production lines (segment / tip joining)
  • Manufacturing of hard tools requiring high-reliability joint quality