---
publication_id: "OT-2026-000000567"
title: "Laser processing nozzle and laser processing machine"
published_at: "2026-09-15T19:03:05.310661Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000567"
categories:
  - "manufacturing-assembly-equipment/joining-and-welding"
keywords:
  - "b23k26/1462"
  - "b23k26/382"
---

# Laser processing nozzle and laser processing machine

## Abstract

An inner nozzle tip portion includes an inner nozzle opening configured to emit a laser beam and eject a first assist gas. An outer nozzle includes a stepped part provided at an outer nozzle tip portion and recessed inward from the outer nozzle tip portion, and an outer nozzle opening open to the stepped part to be a concentric circle with an inner nozzle opening, the outer nozzle opening being configured to eject a second assist gas. The stepped part includes a flat portion extending from a peripheral edge of the outer nozzle opening in a direction orthogonal to a direction of an axis, and the inner nozzle tip portion is located between the outer nozzle opening and the outer nozzle tip portion in the direction of the axis.