RU2278004C1 - Cutting tool - Google Patents

Abstract

FIELD: metal working processes and equipment, built-up cutting tools.

SUBSTANCE: tool includes body with seat. Cutting tip is arranged in said seat on movable or rotary member with pin. Cutting tip is mounted with use of recess or dent of said member and respectively with use of dent or recess of tool body, both (dent and recess) are inclined relative to supporting wall of body or they are arranged eccentrically relative to it. In order to lower labor consumption at using cutting tool, elastic member is placed in gap between end of movable or rotary member and end of body seat and (or) in gap between dent or recess of said member and respectively recess or dent of tool body.

EFFECT: lowered labor consumption at operation of cutting tool.

3 cl, 1 dwg

Description

The invention relates to cutting tools for primarily metal working.

Known cutting tools for AS USSR No. 776764 and 1013114, MKI V 23 V 27/16, comprising a housing in the socket of which a cutting insert is located on a movable or rotary element with a pin, which are fixed with a groove or protrusion on these elements and, accordingly, a protrusion or groove on the housing located under angle or eccentric support wall of the housing.

The disadvantage of these tools is the impossibility in some cases to reduce the complexity of their operation.

The objective of the invention is the elimination of this disadvantage, i.e. reducing the complexity of their operation.

To solve the problem:

- in the gap between the end face of the movable or rotary element and the end face of the housing socket or in the gap between the protrusion or groove of these elements and the housing is an elastic element;

- the elastic element is located in both the first and second gaps.

This design of the cutting tool reduces the complexity of operation by eliminating the loss of tool parts from the housing socket after expanding the cutting plate, which (parts) are held in the housing socket by additional friction forces as a result of the impact of the elastic (elastic) element (s).

The invention is illustrated in figure 1, a, b, c, which depicts one of the varieties of the cutting tool developed design.

Figure 1, a shows a cutting tool, a plan view after clamping the cutting insert, figure 1, b shows a section of this tool and figure 1, c shows one of the options for the elastic element, a plan view.

The presented cutting tool (cutter) consists of a body, in the socket of which there is a cutting plate on a movable element with a pin, fixed with a groove on the movable element and a protrusion on the body, located at an angle φ to the supporting wall of the body.

In the gap between the highlander of the movable element and the highlander of the housing socket, an elastic element of thickness h _{t is located} (Fig. 1, b, c).

In addition, in the gap of this tool between the protrusion of the housing and the groove of the movable element is also located an elastic element of thickness h _t2 .

The elastic elements, both the first and second, are made curved in the middle part and rectilinear from the middle (of the same shape, plan view, FIG. 1, c). In addition, they are equipped with two protrusions at the ends, so that the elastic elements can be reliably fixed to the housing or the movable element, and accordingly, the possibility of their displacement during operation relative to the parts on which they are fixed is excluded. In the general case, the cutting tool may have not two, like the one given, but one of the elastic elements (if its rigidity is sufficient).

Everything said above about the tool shown in FIG. 1 is also valid for all any other designs of cutting tools with movable and rotary elements. In the latter case, i.e. for tools with rotary elements, elastic elements can be made arc between the protrusions from the edges, and with radii at the edges equal to the same radii (i.e. extreme) of the protrusion or groove of the housing or rotary element.

In the General case, the elastic elements can be made of various shapes, including corrugated (wave) and from a non-linear wire (not shown in figure 1).

To provide additional ability to control the friction forces between the moving parts of the tool next to the elastic elements can be placed one or more flat gaskets, and between the protrusions at the edges.

The width of the elastic element of the first h _y , the thickness h _t , the gap h _z (before installation in the socket) Fig. 1, c. The same holds true for the second elastic element with a thickness h _t2 (Fig. 1, b).

After installing the elastic elements, they are straightened, creating the necessary frictional force in the details of the housing socket.

The clamping of the cutting insert on the housing is carried out by applying a force P _s . In this case, all parts in the socket are jammed.

The expansion of the cutting insert is carried out by the force P _r .

The tool moves during operation in the feed direction S.

Claims (3)

1. A cutting tool comprising a housing, in the socket of which there is a cutting insert on a movable or pivoting element with a pin, secured with a groove or protrusion on this element and, accordingly, a protrusion or groove on the housing, angled or eccentric to the supporting wall of the housing, the gap between the end of the movable or rotary element and the end of the housing socket and / or in the gap between the protrusion or groove of this element and, accordingly, the groove or protrusion of the housing is an elastic element. 2. The cutting tool according to claim 1, characterized in that it is equipped with gaskets, including flat ones, located in the gap or gaps next to the elastic elements. 3. The cutting tool according to claim 1, characterized in that the elastic element is made curved rectilinear, or arc, or corrugated, or from a non-linear wire.