RU2285590C2 - Cutting tool - Google Patents

Abstract

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

SUBSTANCE: cutting tool includes body in seat of which cutting tip is fastened on movable or rotary member provided with pin. Cutting tip is secured by its supporting surfaces to said members and in seat of tool body. Supporting surfaces of cutting tip are inclined or eccentrically arranged relative to supporting wall of tool body. Supporting surfaces of movable or rotary member and of body are formed on riffles. In order to improve working accuracy, cutting tool is provided with elastic member used for forcing movable member to base of body seat before fastening cutting tip.

EFFECT: improved working accuracy.

9 cl, 2 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 there is a cutting plate on a movable or pivoting element with a pin, fixed with support surfaces on these elements and the housing socket located at an angle or eccentrically supporting wall corps.

The disadvantage of these tools is the impossibility in some cases to ensure high precision manufacturing of tool parts.

The objective of the invention is the elimination of this disadvantage, i.e. ensuring high precision manufacturing of tool parts.

To achieve the solution of the task:

- the supporting surfaces of the movable or rotary element and the housing are located on the corrugations;

- corrugations are made rectilinear or arc;

- corrugations are located on the side of the base of the movable or rotary element and the housing socket;

- corrugations are located on top of the movable or rotary element and below the cantilever part of the housing;

- corrugations are made along the entire or not across the entire width of the base of the movable or rotary element and the base of the housing socket;

- corrugations are made along the entire or not the entire width of the bottom of the cantilever part of the housing and not across the entire width of the top of the movable or rotary element;

- corrugations are made in cross section triangular, rectangular or trapezoidal resistant or not resistant;

- corrugations are made not persistent, and in the nest there is an elastic element on top;

- the housing is equipped with an additional supporting wall removable or permanent.

This design of the cutting tool provides high precision manufacturing of parts due to the possibility of grinding their base / main / surfaces.

The invention is illustrated in figure 1, a-e, as well as figure 2, a, b, which depict several varieties of the cutting tool developed design.

Figure 1, a shows a plan view of a cutting tool with a movable element, figure 1, b, c, d shows sections of this tool and figure 1, e, f shows sections / profiles / corrugations / of this and others / tool / tov /.

Figure 2, a shows a plan view of a cutting tool with a rotary element, and figure 2, b shows a section of it.

The cutting tools of Fig. 1 are provided with rectilinear corrugations / with supporting surfaces transmitting a power load /, located at an angle φ to the supporting wall of the housing / in contact with the side surface - the face of the cutting insert /.

The cutting tool of figure 2 is equipped with arc corrugations P ₁ and P _{2 of} radius R ₁ and R ₂ and a center at the point O _p located eccentrically arc supporting wall of the body with a radius of R _c and a center at the point About _{with /} fig.2, a /.

The corrugations can be located on the side of the base of the movable or rotary elements and the base of the housing socket / Fig. 1, b, g, as well as Fig. 2, b /.

The corrugations can also be located on top of the movable / 1, in / or rotary / not shown / elements and below the cantilever part of their housing.

The corrugations are made over the entire / Fig. 1, b, g / and not over the entire / Fig. 2, b / width of the base of the movable or rotary elements and the base of the housing socket.

The corrugations can also be performed along the entire or not all / Fig. 1, in / width of the bottom of the cantilever part of the body and not across the entire width of the top of the movable or rotary elements.

In the corrugation section, they can be triangular (Fig. 1, b, c, d, e, and also Fig. 2, b), rectangular (Fig. 1, e) or trapezoidal (not shown).

The corrugations can be made persistent, i.e. having supporting surfaces / on one of their sides /, located perpendicular to the base of the housing socket / base of the plate / / Fig. 1, b, e, and also Fig. 2, b /.

The corrugations can be performed without shock, i.e. such, in which the supporting / working / surfaces are located at an acute angle to the base of the housing socket - the base of the cutting insert / Fig. 1, c, d, d /.

The cutting tool / Fig. 1, a, c / due to the above-mentioned features provides the clamping of the movable / rotary / element to the base / flat / housing socket.

The cutting tool / Fig. 1, a, g /, in turn, due to the above-mentioned features, as well as the fact that in the socket of its body there is an elastic element on top that presses the movable element to the base of the housing socket until it clamps, and then moves up cantilever part, compresses the elastic element and, accordingly, compresses the cutting insert to the movable / rotary / element. Here, after the nip between the surfaces of the corrugations appear gaps _of h.

The tool body may be provided with an additional support wall in contact after clamping with another / second / side face / surface / cutting insert / not shown /. An additional supporting wall can be either permanent or removable. This ensures high precision machining in all cases of cutting.

The clamping of the cutting insert is carried out using the force P _s . In this case, the movable element is shifted to the right / Fig. 1, a /, and the rotary element is rotated counterclockwise, the center O _{p /} Fig. 2, a /, and all parts are jammed in the housing socket.

The expansion of the cutting insert is carried out using the force P _p . The cutting tools move when working in the feed direction S.

Everything said above about cutting tools / 1 and 2 / equally applies to all other designs with movable and rotary elements, including supporting elements / see, for example, A. with. USSR No. 1177065, No. 1013114 and many others.

The number of corrugations in the housing socket, as well as on a movable or rotary element, may be 2-10 or more.

The centers of the arc corrugations are aligned, i.e. are at one point O _{p /} Fig. 2, a /.

The elastic element in the socket of the tool body / Fig. 1, a, g / may have a U-shape to fix it on the body and to exclude displacement along the groove during clamping and unclenching of the plate. It / elastic element / may have an elastic part of various shapes, including corrugated, of curved wire, etc.

In the General case, the elastic element can be mounted in the groove of the movable or rotary element and be made arc, if the groove in which it is located, arc.

Claims (9)

1. A cutting tool comprising a housing, in the socket of which on a movable or rotary element with a pin there is a cutting insert fixed in the housing socket using the supporting surfaces of these elements located at an angle or eccentrically supporting the housing wall, while the supporting surfaces of the movable or rotary element and the housing are located on the corrugations, characterized in that it is equipped with an elastic element designed to clamp the movable element to the base of the housing socket before fixing the cutting area Muds. 2. The cutting tool according to claim 1, characterized in that the corrugations are made rectilinear or arc. 3. The cutting tool according to claim 1, characterized in that the corrugations are located on the side of the base of the movable or rotary element and the housing socket. 4. The cutting tool according to claim 1, characterized in that the corrugations are made along the whole or not the entire width of the base of the movable or rotary element and the base of the housing socket. 5. The cutting tool according to claim 1, characterized in that the corrugations are located on top of the movable or rotary element and below the cantilever part of the housing. 6. The cutting tool according to claim 1, characterized in that the corrugations are made along the entire or not all width of the bottom of the cantilever part of the body and not across the entire width of the top of the movable or rotary element. 7. The cutting tool according to claim 1, characterized in that the corrugations are made in cross section triangular, or rectangular, or trapezoidal resistant or non-resistant. 8. The cutting tool according to claim 1, characterized in that the housing is equipped with an additional supporting wall removable or permanent. 9. The cutting tool according to claim 1, characterized in that the centers of the arc corrugations are aligned.

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