ISO 3002-1:1982 切削と研削の基本量—パート1：切削工具のアクティブ部分の形状—一般用語、参照システム、工具と作業角度、チップブレーカー | ページ 5

3.3.3.1

顔の輪郭(図 2d)

面 A _γと任意の平面との交差によって形成される曲線。通常、このプロファイルは刃先法線面 P _n (4.1.5) で定義および測定されます。他の平面で定義する場合は、これを明確に指定する必要があります。

3.3.3.2

側面プロファイル(図 2d)

フランク A _αと任意の平面との交差によって形成される曲線。通常、このプロファイルは刃先法線面 P _n (4.1.5) で定義および測定されます。他の平面で定義する場合は、これを明確に指定する必要があります。

3.1.1

work surface (figure 1)

The surface on the workpiece to be removed by machining.

3.1.2

machined surface (figure 1)

The desired surface produced by the action of the cutting tool.

3.1.3

transient surface (figure 1)

The part of the surface which is formed on the workpiece by the cutting edge (3.4.1) and removed during the following cutting stroke, during the following revolution of the tool or workpiece, or by the following cutting edge.

3.2.1

body (figures 3 to 5)

The part of the tool which holds the cutting blades or inserts, or on which are formed the cutting edges (3.4.1).

3.2.2

shank (figures 2a, 4 and 5)

The part of the tool by which it is held.

3.2.3

tool bore (figure 3)

That bore in a tool by which it can be located and fixed by a spindle, arbor or mandrel.

3.2.4

tool axis (figures 3, 4 and 5)

An imaginary straight line with defined geometrical relationships to the locating surfaces used for the manufacture and sharpening of the tool and for holding the tool in use. Generally, the tool axis is the centreline of the tool shank or bore; it is usually parallel or perpendicular to the locating surfaces, although it could be the centreline of a conical surface as in the case of a taper shank. When not obvious, the tool axis must be defined by the designer.

3.2.5

cutting part (figure 2a)

3.2.6

base (figures 2a, 12 and 18)

3.2.7

wedge (figures 3 and 7)

The portion of the cutting part enclosed between the face (3.3.1) and the flank (3.3.2). It can be associated with either the major or minor cutting edge (3.4.1).

3.3.1

face A _γ (figures 2a, 3, 4, 5 and 7)

The surface or surfaces over which the chip flows. When the face is composed of a number of surfaces inclined to one another, these are designated first face, second face, etc, starting from the cutting edge. These surfaces may be called lands and unless otherwise specified it is assumed that these are associated with the major cutting edge (3.4.1.1).

Where it is necessary to distinguish the faces associated with the major and minor cutting edges (3.4.1.1 and 3.4.1.2), that part of the face which intersects the flank (3.3.2) to form the major cutting edge is called the major face and that part of the face which intersects the flank to form the minor cutting edge is called the minor face, for example major first face, minor first face, etc.

3.3.1.1

reduced face (figure 2c)

A specially prepared surface or surfaces separated from the rest of the face by a step and designed in such a way that the chip contacts only the reduced face.

Note 1 to entry: A reduced face should not be confused with the land associated with a groove or step intended to induce chip breaking nor with multiple faces of the tool. The symbol has been adopted to designate the reduced face and to distinguish it from lands on the tool face which are designated by A _γ1, A _γ2, etc.

3.3.1.2

chip breaker (see clause 7)

A modification of the face A _γ , to control or break the chip, consisting of either an integral groove or an integral or attached obstruction.

3.3.2

flank A _α (figures 2a, 3, 4, 5 and 7)

The tool surface or surfaces over which the surface produced on the workpiece passes. When a flank is composed of a number of surfaces inclined to one another, these are designated first flank, second flank, etc., starting from the cutting edge. These surfaces may be called lands and unless otherwise specified it is assumed that these are associated with the major cutting edge (3.4.1.1).

Where it is necessary to distinguish the flanks associated with the major and minor cutting edges (3.4.1.1 and 3.4.1.2), that part of the flank which intersects the face to form the major cutting edge is called the major flank and that part of the flank which intersects the face to form the minor cutting edge is called the minor flank, for example major first flank, minor first flank, etc.

3.4.1

cutting edge

That edge of the face which is intended to perform cutting.

3.4.1.1

tool major cutting edge S (figures 2a, 3, 4, 5 and 7)

That entire part of the cutting edge which commences at the point where the tool cutting edge angle K_r is zero (5.1.1.1) and of which at least a portion is intended to produce the transient surface on the workpiece. In the case of tools having a sharp corner (3.4.2) at which the value of K_r may be considered to pass through zero, the major cutting edge commences at that corner. In the case of tools for which the value of K_r does not decrease to zero at any point on the cutting edge, the entire cutting edge is the tool major cutting edge as, for example, in the case of a slab milling cutter.

3.4.1.2

tool minor cutting edge S′ (figures 2a, 3, 4 and 5)

The remainder of the cutting edge, if any, and where present commences at the point on the cutting edge where K_r is zero (5.1.1.1) but extends from this point in a direction away from the tool major cutting edge. It is not intended to produce any of the transient surface on the workpiece. Some tools may have more than one tool minor cutting edge as, for example, in the case of a cutting-off tool.

3.4.1.3

working major cutting edge S_{e (figure 2b)}

That entire part of the cutting edge which commences at the point where the working cutting edge angle K_re is zero (5.2.1.1) and of which at least a portion produces the transient surface on the workpiece. In the case of tools having a sharp corner (3.4.2) at which the value of K_re may be considered to pass through zero, the working major cutting edge commences at that corner. In the case of tools for which the value of K_re does not decrease to zero at any point on the cutting edge, the entire cutting edge is the working major cutting edge as, for example, in the case of a slab milling cutter.

3.4.1.4

working minor cutting edge S_{e′ (figure 2b)}

The remainder of the cutting edge, if any, and where present commences at the point on the cutting edge where K_re is zero (5.2.1.1) but extends from this point in a direction away from the working major cutting edge. It does not produce any of the transient surface on the workpiece. Some tools may have more than one working minor cutting edge, as for example, in the case of a cutting-off tool.

Note 1 to entry: A distinction must be made between the tool major cutting edge and the working major cutting edge because the points at which K_r and K_re can be considered to be zero are not, in general, coincident.

3.4.1.5

active cutting edge (figure 2b)

That portion of the working cutting edge which is actually engaged in cutting at a particular instant generating both the transient and machined surfaces on the workpiece.

3.4.1.5.1

active major cutting edge S_a

The portion of the active cutting edge measured along the cutting edge from the point of intersection of the cutting edge and work surface to the point on the working cutting edge at which the working cutting edge angle K_re (5.2.1.1) may be considered to be zero.

3.4.1.5.2

active minor cutting edge S_a′

The portion of the active cutting edge measured along the cutting edge from the point at which the working cutting edge K_re (5.2.1.1) may be considered to be zero to the point of intersection of the working minor cutting edge and the machined surface.

3.4.2

corner (figures 2 to 6a)

The relatively small portion of the cutting edge at the junction of the major and minor cutting edges; it may be curved, straight or the actual intersection of these cutting edges.

3.4.2.1

rounded corner (figure 6a)

A corner having a curved cutting edge.

3.4.2.2

chamfered corner (figure 6a)

A corner having a straight cutting edge.

3.4.3

selected point on the cutting edge

A point selected on any part of the cutting edge in order to define, for example, the tool or working angles at that point (5). The selected point may be on the major cutting edge or on the minor cutting edge. When the selected point is so chosen as to be located on the minor cutting edge, the planes and angles associated with this point are so designated (4 and 5).

3.4.4

rounded cutting edge

A cutting edge which is formed by a rounded transition between the face, A _γ and the flank, A _α .

3.4.5

interrupted cutting edge (figure 6b)

A cutting edge having discontinuities of sufficient magnitude as to prevent chip formation from taking place at the locations where they occur. (Such discontinuities are often used to reduce the size of the individual chips produced by a tool such as a slab milling cutter.)

3.4.6

tool profile

3.5.1

corner radius r_ε(figure 6a)

The nominal radius of a rounded corner measured in the tool reference plane, P_r (4.1.1).

3.5.2

chamfered corner length b_ε (figure 6a)

The nominal length of a chamfered corner measured in the tool reference plane P_r (4.1.1).

3.5.3

land width b_γ and b_α (figure 7)

The width of a land on the major face is designated by b_γ and the width of a land on the minor face is designated by b_γ ′.

The width of a land on the major flank is designated by b_α and the width of a land on the minor flank is designated by b_α ′.

The identification number of the land together with the suffix used to identify the plane of measurement may be added if necessary, for example, b_γn2,b_αn1, b_αn2′.

3.5.4

rounded cutting edge radius r_n

The nominal radius of a rounded cutting edge measured in the cutting edge normal plane, P_n (4.1.5).

3.5.5

width of reduced face (figure 2c)

The width of a reduced face is designated by .

Note 1 to entry: The width of a reduced face should not be confused with the width of a land on the face. The symbol has been adopted to designate the width of a reduced face to distinguish it from the width of a land on the face which is designated by b_γ .

Figure 1 — Surfaces on the workpiece

Figure 2a — Cutting edges and surfaces on the cutting part of a turning tool

Figure 2b — Illustration of various terms relating to the tool and work piece

Figure 2c — Reduced face

Figure 2d — Profiles of the face and flank

Figure 3 — Cutting edges and surfaces on the cutting part of a shell end mill

Figure 4 — Cutting edges and surfaces on the cutting part of a single cutter with parallel shank

Figure 5 — Cutting edges and surfaces on the cutting part of a twist drill

Figure 6a — Corners viewed in the tool reference plane P_{r (4.2.1)}

Figure 6b — Interrupted cutting edge

Figure 7 — Wedge with lands