SU1240507A1 - Assembled tool - Google Patents

Description

I1240507

The invention relates to the machining of metals, namely to the designs of metal-cutting tools.

The purpose of the invention is to increase the speed of fastening the cutting plates while maintaining the reliability of the fastening.

The goal is achieved so that when closed due to directional deformation; the protrusions move the cutting plates to both the abutment surfaces of the socket and the selection of gaps between them. 15

FIG. 1 shows a cutter assembly, side view; in FIG. 2, the same, front view (the clamping member is not immersed by a pressure screw); in fig. 3 - the same, top view; in fig. 4 - section A-A in FIG. 3. along the spring lugs (the clamping element is not immersed by the clamping screw); in fig. 5 is a view B in FIG. 2 (clamping element conventionally not shown) .25

The assembly tool consists of a body 1, in the slot of which, on a lining 2, there are mounted cutting plates (for example, 5 pieces) 3-7, fixed by a clamping element 8 and a screw 9. 30 The clamping part 10 of the clamping element 8 is made in the form of projections 11-15, bent along its lower part in the generic direction B (Fig. 2) and the angle and the transverse direction (Fig. 3 at the angle /. The protrusions are oriented all in one direction - towards the stable surfaces of surfaces 16 and 17 of the case 1, which accommodates the cutting plates.

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The surfaces 18-21,22 of the protrusions 11-TC are so defined that, in the absence of a load (from the clamping screw on the clamping element), the surfaces 18-22 are not distant from the front surfaces of the cutting plates 3-7 and are portions of one common curvilinear surface 23 with a small curvature radius The concavity of the curved surface 23 is directed opposite to the action of the screw 9.

In the clamping element 8, on the side of the opposite pressing part 10, in order to prevent it from turning during the assembly, the protrusion 24 is completed, the buried channel 25 of the housing 1.

The part of the clamping element 8 has a cylindrical protrusion 26, which is articulated with the cutter body through the socket 27, serves to prevent the clamping element from shifting at the moment of deformation of the protrusions 11-15 (under load from the screw 9). .

The tool is assembled as follows.

In the groove of the housing 1 are installed lining 2 and on top of it - cutting plates 3-7. A screw 9 is threaded through a hole in the clamping member 8 and screwed into the housing. The protrusion 24 of the clamping element is installed in the groove 25, the protrusion 26 in the slot 27 of the housing. Screwing in the screw 9 after the moment of contact of the extreme projections 11 and 15 with the front surfaces of the cutting plates 3 and 7 is accompanied by deformation of the projections 11 and 15 towards the stop surfaces 16 and 17 of the groove of the housing. The protrusion 11 tightly presses the cutting plate 3 against the stop surfaces 16 and 17. By force of this, the resulting force K, which is perpendicular to the axis of the protrusion 11, contributes to this.

The protrusion 15, acting on the front surface of the plate 7 and shifting it towards the erect surfaces 16 and 17, simultaneously using a component force adequate to the force

D tightly and unimpededly moves all the cutting inserts between them towards the thrust surface 16. This is the main function of the protrusion 15 in the controlled process of attaching the inserts. A force of Km is adequate to E and presses the cutting plate 7 against the thrust surface of the groove 17. When the remaining protrusions 12-14 touch the front surfaces of the cutting plates 4t6, the latter will already be tightly compressed between themselves in the direction of the thrust surface 16 and the component forces adequate force D, will only perform the hedging function of fastening, and the component forces adequate to force E will press the cutting plates against the abutment surface 17. Upon further action of the screw 9 on the clamping element

8, the cutting plates 3-7 will be pressed tightly against the support.

The loosening of the cutting plates occurs when turning the screw 9 in the reverse312405074

direction and in the sequence required for the deformation of the protrusion, inverse to the process of fastening. 11-15, they can be made prru- With the purpose of reducing the force of the screw 9, ginning.

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Compiled by V.Zolotov Editor M.Tovtin Tehred M.Morgental Proofreader M.Pojo

Order 3431/7 Circulation 1001Subscription

- VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. five

Claims (1)

ASSEMBLY TOOL, comprising a housing, in the socket of which cutting plates are mounted on the abutting surfaces, and a clamping element mated to the front surfaces of the cutting inserts through. the clamping surfaces of the protrusions by means of a screw, characterized in that, in order to increase the quick-change fastening of the cutting inserts, the protrusions are made inclined in the longitudinal and transverse directions towards the thrust surfaces of the socket, and their clamping surfaces are sections of a common curved surface with a concavity in the direction opposite to the force of the screw . (rig. 1