US 10,456,946 B2Granted

Cutting member of a saw chain, saw chain having a cutting member and files for filing a cutting tooth of a saw chain

AssigneeAndreas Stihl AG & Co. KG

InventorsThomas Lux, Friedrich Hollmeier

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Abstract

A cutting member of a saw chain has a cutting tooth and a cutting surface having at least one cutting edge. In a side view, looking in a sharpening direction, a first line connects an intersection between an upper edge of a roof section and the cutting surface to an intersection between an imaginary line, which extends parallel to the upper edge, and the cutting surface. A second line connects an intersection between the upper edge and an imaginary displacement of the cutting surface parallel to the contact surface at a position in which a tooth tip of the cutting tooth lies perpendicular to the running direction above a longitudinal center axis of the rearward bearing point, to a point of intersection between the imaginary line and the imaginary displacement of the cutting surface. The contact surface is aligned such that the first and second line extend in parallel.

Claims13

Dependent claims

A cutting member of a saw chain, the cutting member comprising:

a cutting tooth;
the cutting member defining a running direction and having a forward bearing point disposed at a forward position with respect to the running direction and a rearward bearing point disposed at a rearward position with respect to the running direction;
a sharpened cutting surface at which at least one cutting edge is formed;
a planar contact surface adjoining said cutting surface;
said cutting tooth having a roof section at which one of said at least one cutting edges is formed;
said roof section, when viewed in a side view of the cutting member with a viewing direction in a sharpening direction which runs parallel to said cutting surface and parallel to said contact surface, having a greatest thickness (i) measured perpendicular to the running direction;
said roof section having an upper edge;
the cutting member defining a first connecting line in said side view connecting a first point of intersection between said upper edge of said roof section and said cutting surface to a point of intersection between an imaginary line, which extends parallel to and at a distance (k) from said upper edge of said roof section, and said cutting surface;
said cutting tooth having a tooth tip;
the cutting member defining a second connecting line in said side view connecting a second point of intersection between said upper edge of said roof section and an imaginary displacement of said cutting surface parallel to said contact surface at a position in which said tooth tip lies perpendicular to the running direction above a longitudinal center axis of the rear bearing point, to a third point of intersection between said imaginary line and said imaginary displacement of said cutting surface;
and,
said contact surface being aligned such that said first connecting line and said second connecting line run parallel to each other.

9 more elements

A saw chain comprising:

a cutting member having a cutting tooth;
said cutting member defining a running direction and having a forward bearing point disposed at a forward position with respect to the running direction and a rearward bearing point disposed at a rearward position with respect to the running direction;
said cutting member having a sharpened cutting surface at which at least one cutting edge is formed;
said cutting member having a planar contact surface adjoining said cutting surface;
said cutting tooth having a roof section at which one of said at least one cutting edges is formed;
said roof section, when viewed in a side view of the cutting member with a viewing direction in a sharpening direction which runs parallel to said cutting surface and parallel to said contact surface, having a greatest thickness (i) measured perpendicular to the running direction;
said roof section having an upper edge;
said cutting member defining a first connecting line in said side view connecting a first point of intersection between said upper edge of said roof section and said cutting surface to a point of intersection between an imaginary line, which extends parallel to and at a distance (k) from said upper edge of said roof section, and said cutting surface;
said cutting tooth having a tooth tip;
said cutting member defining a second connecting line in said side view connecting a second point of intersection between said upper edge of said roof section and an imaginary displacement of said cutting surface parallel to said contact surface at a position in which said tooth tip lies perpendicular to the running direction above a longitudinal center axis of the rear bearing point, to a third point of intersection between said imaginary line and said imaginary displacement of said cutting surface;
said contact surface being aligned such that said first connecting line and said second connecting line run parallel to each other;
said forward bearing point and said rearward bearing point each defining a respective longitudinal center axis;
said longitudinal axis of said forward bearing point and said longitudinal axis of said rearward bearing point conjointly defining a bearing point plane;
said first connecting line and said bearing point plane conjointly defining an angle (ϵ) of less than 90° measured at a side facing away from said roof section;
a connecting member having an upper side and arranged adjacent to said cutting member;
said upper side of said connecting member and said bearing point plane defining a distance (f) between each other;
said contact surface and said bearing point plane defining a distance (g) between each other;
and,
said distance (f) being smaller than said distance (g).

16 more elements

Dependencies are inferred from the claim text.