---
publication_id: "OT-2026-000002294"
title: "Clamp for retaining a piece to be worked and method for working a piece"
published_at: "2026-09-15T19:12:03.165827Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000002294"
categories:
  - "tools-tooling/clamping-tools"
keywords:
  - "b25b1/2457"
  - "b25b5/163"
  - "b25b5/163"
  - "b23q3/066"
  - "b25b1/103"
  - "b25b5/02"
---

# Clamp for retaining a piece to be worked and method for working a piece

## Abstract

Clamp ( 1 ) for retaining piece ( 100 ) to be worked, comprising a support body ( 2 ) and two jaws ( 3 ), at least one of which is movably connected to the support body ( 2 ) along a movement direction (X). Each jaw ( 3 ) carries at least one insert ( 5 ), provided with a retention portion ( 6 ) configured to be inserted into a corresponding counter-shaped first milled groove ( 101 ) made on a side ( 102 ) of the workpiece ( 100 ). The retention portion ( 6 ) of each insert ( 5 ) has, on a first reference plane (P 1 ), a section with a first external profile ( 7 ) extending along a circular arc. The retention portion ( 6 ) of each insert ( 5 ) has, on a second reference plane (P 2 ) transverse to the first one, a section with a tapered second external profile ( 8 ), narrowing towards an end ( 36 ) sharing at least one point with the first external profile ( 7 ).