Clamping means for a holder for a cutting tool

• US 5,079,979 A
• Filed: 09/05/1990
• Issued: 01/14/1992
• Est. Priority Date: 09/08/1989
• Status: Expired due to Term

• Current Assignee: Iscar Limited (Berkshire Hathaway Incorporated)
• Original Assignee: Iscar Limited (Berkshire Hathaway Incorporated)
• Inventors: Pano, Joseph
• Primary Examiner(s): Paumen, Gary F.
• Assistant Examiner(s): DAULTON, JULIE
• Application Number:
  US07/578,065
• Time in Patent Office: 496 Days
• Field of Search: 82/157, 82/158, 82/160, 82/99.1, 29/50, 29/52, 408/714, 407/101-105, 407/107-110, 407/50, 407/46, 407/91, 407/117, 407/8, 407/9, 407/10
• US Class Current: 82/158
• CPC Class Codes: B23B 29/043 with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts B23B29/14 takes precedence
• CPC Class Codes: Y10T 407/225 Resiliently biased tool clamping jaw
• CPC Class Codes: Y10T 407/2288 Integral with holder
• CPC Class Codes: Y10T 407/25 including cut off tool
• CPC Class Codes: Y10T 82/2585 Tool rest

Abstract

An elongated tool block for use in metal grooving, parting, turning or boring operations and being of the kind consisting of two component blocks which, when screw coupled together, also clamp a holder blade thereto, one of the blocks being formed with an elongated edge surface serving to delimit an outer longitudinal boundary of a holder blade retaining groove, and having an end portion and an intermediate portion; a relatively resilient coupling portion of this one block serving to couple the end and intermediate portions together; there being furthermore provided first screw coupling means for screw coupling the component blocks together at the intermediate portion and second screw coupling means for screw coupling the component blocks together at the end portion.

Claims

1. An elongated tool block comprising a first, major component block having, adjacent a base region thereof, an integrally formed first longitudinally directed insert holder blade retaining element;

and a second, discrete minor component block comprising a second longitudinally directed insert holder blade retaining element;

said insert holder blade retaining elements having formed therein a pair of longitudinally directed grooves adapted to receive opposite longitudinal edges of an insert holder blade; and

screw coupling means for screw coupling the first and second component blocks together and thereby clamp the insert holder blade to the tool block;

wherein

said second component block is formed with an elongated edge surface serving to delimit an outer longitudinal boundary of the groove of the second component block and has an end portion and an intermediate portion coupled by a relatively resilient coupling portion which resiliently couples said end and intermediate portions thereof;

said screw coupling means includes first means for screw coupling the component blocks together at the intermediate portion and second means for screw coupling the component blocks together at the end portion.

2. A tool block according to claim 1, wherein an intermediate extend of the edge surface of said end portion is inset with respect to the remaining portions of the edge surface of the end portion and the intermediate portion with said resilient coupling portion being seated adjacent said inset intermediate extent.

3. A tool block according to claim 1 or 2, wherein said relatively resilient coupling portion is located between a longitudinal surface of the second component block and a transversely directed slit formed in the second component block.

4. A tool block according to claim 3, wherein the second component block is formed with a pair of end portions and one intermediate portion with two relatively resilient coupling portions serving respectively to couple the end portions to the intermediate portion.