---
publication_id: "OT-2026-000001238"
title: "Robot control device and plasma cutting method"
published_at: "2026-09-15T19:04:22.334149Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000001238"
categories:
  - "robotics-automation/robot-architectures"
keywords:
  - "b25j9/163"
  - "b25j9/163"
  - "b25j9/1664"
  - "b25j9/1664"
  - "b23k10/00"
  - "b23k10/00"
---

# Robot control device and plasma cutting method

## Abstract

Provided are a robot control device and a plasma cutting method that are capable of appropriately cutting a workpiece at the cutting position on the cutting surface of the workpiece while keeping a constant distance between the tip of a torch and the surface of the workpiece. A robot control device includes: a robot control unit that controls an operation of a plasma cutting robot according to a teaching program; a distance calculation unit that calculates a distance between a torch and a cutting position on a cutting target; a posture calculation unit that calculates a posture of the torch relative to a cutting surface that contains the cutting position on the cutting target; and a correction unit that corrects at least a position of the torch in an adaptive direction orthogonal to the cutting surface on a basis of the distance calculated by the distance calculation unit and the posture calculated by the posture calculation unit, to keep a cutting distance for plasma-cutting the cutting target. The robot control unit controls the operation of the plasma cutting robot with at least the position of the torch corrected by the correction unit.