CLAMPING HOLDER FOR A CUTTING TOOL

• US 3,811,162 A
• Filed: 03/14/1972
• Issued: 05/21/1974
• Est. Priority Date: 03/16/1971
• Status: Expired due to Term

• Current Assignee: Otto Bay
• Original Assignee: Otto Bay
• Inventors: Bay, Otto
• Primary Examiner(s): Juhasz, Andrew R.
• Assistant Examiner(s): Briggs, W. R.
• Application Number:
  US05/234,569
• Time in Patent Office: 798 Days
• Field of Search: 82/36,37 85/74,75 287/20.3,52.06 29/96
• US Class Current: 407/108
• CPC Class Codes: B23B 29/04 Tool holders for a single cutting tool
• CPC Class Codes: Y10T 407/2256 including wedge clamp element
• CPC Class Codes: Y10T 407/2284 Wedge clamp element

Abstract

A clamping holder comprising an elongated groove of dove-tailed cross-section for lengthwise accommodation of the square steel bar of a cutting tool to be clamped therein, and comprising a wedge-like liner of U-shaped cross-section placed with transversal play in the groove and adapted to embrace the tool bar on three longitudinal sides and pressing screws screwed in the liner for engaging the middle side among the embraced sides of the tool bar and urging the latter with its opposite longitudinal side into clamping engagement with the base surface of the groove, whereby the wedge-like flanks of the liner are adapted to press upon the two other longitudinal sides of the tool bar.

Claims

1. A clamping holder for a cutting tool, comprising a holder body provided with an elongated groove of dovetailed crosssection for lengthwise accommodation of the square steel bar of the cutting tool to be clamped therein, a wedge-like liner of Ushaped cross-section placed with transversal play in said groove and adapted to embrace the tool bar on three longitudinal sides, said liner having two flanks with an outer wedge surface on opposite sides longitudinally to said groove and a middle wall connecting said flanks and being located near the longitudinal opening of said groove, one of said flanks of said liner formed with a recess therein, a securing pin screwed into said holder body adjacent to said flank and projecting into said recess for securing said liner against lengthwise displacement in said groove of said holder body and pressing screws screwed through said middle wall for engaging the middle of the embraced sides of the tool bar and for urging the latter with its opposite side into clamping engagement with the base surface of said groove, whereby said flanks of said liner are under wedge action by said holder body and thus adapted to press upon the two other longitudinal sides of the tool bar.