Parting blade for turning purposes

• US 20060257217A1
• Filed: 05/01/2006
• Published: 11/16/2006
• Est. Priority Date: 05/02/2005
• Status: Active Grant

• Current Assignee: Sandvik Intellectual Property AB (Sandvik AB)
• Original Assignee: Sandvik Intellectual Property AB (Sandvik AB)
• Inventors: Berminge, Erik
• Granted Patent: US 7,419,337 B2
• Time in Patent Office: Days
• US Class Current: 407/117
• CPC Class Codes: B23B 2205/02 Fixation using an elastically deformable clamping member
• CPC Class Codes: B23B 27/04 Cutting-off tools B23B27/08 takes precedence ; toolholders for cutting-off inserts B23B29/043
• CPC Class Codes: B23B 27/08 Cutting tools with blade- or disc-like main parts with disc-like main parts B23B27/083
• 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 407/227 with separate means to fasten tool seat to holder
• CPC Class Codes: Y10T 407/2282 including tool holding clamp and clamp actuator
• CPC Class Codes: Y10T 407/25 including cut off tool

Abstract

A parting blade having a flat, elongate body, which is delimited by two opposite side surfaces and has two opposite longitudinal edges which are mutually parallel and present chamfered surfaces for wedging the body in a holder, and which includes at least one insert seat formed adjacent to an end, the position of which seat in relation to a longitudinal edge determines the tip height of a turning insert mounted in the insert seat. An attachment part is formed on one of the side surfaces of the blade body. The attachment part is shorter and thinner than the proper blade body and has two opposite longitudinal edges which are mutually parallel and present chamfered surfaces for wedging the attachment part in another holder. In this way, the parting blade can be formed for robust, wide turning inserts and in spite of this be mounted in holders intended for considerably thinner parting blades.

Claims

1. A parting blade, comprising:

a flat, elongate body, including two opposite side surfaces, two opposite ends and two opposite, longitudinal edges which are mutually parallel and present chamfered surfaces for wedging the body in a holder;

an insert seat formed adjacent to one of the two opposite ends, the position of which seat in relation to a longitudinal edge determines the tip height of a turning insert mounted in the insert seat, the insert seat including an attachment part projecting from one side of the blade body, which attachment part is shorter and thinner than the body, said insert seat including two opposite longitudinal edges, which are mutually parallel and present chamfered surfaces for wedging the attachment part in another holder.

2. The parting blade according to claim 1, wherein the chamfered surfaces of the two longitudinal edges of the blade body converge towards one of the side surfaces of the blade body, the attachment part being located along said side surface and has, its chamfered surfaces, converging toward the blade body.

3. The parting blade according to claim 1, wherein a flat waist piece is formed between the attachment part and the blade body, which waist piece is thinner than the attachment part.

4. The parting blade according to claim 2, wherein a flat waist piece is formed between the attachment part and the blade body, which waist piece is thinner than the attachment part.