SU1685627A1 - Drill for circular drilling of holes with complex surface - Google Patents

Abstract

The invention relates to metal cutting and can be used for machining holes with a complex surface. The aim of the invention is to expand the technological capabilities of the drill. It consists of a body 1 i forming part 2 with longitudinal slots and cutting elements 3 central pin 4 installed in the inner cavity of the body 1 spring-loaded 5 and fixed in the body 1 by a nut 6 axis 7 rigidly connected with pin 4, with interchangeable gulikovy lugs 8 mounted on it, taken out of body 1 and having the possibility of movement in the longitudinal grooves 9 of the body 1 of drills i The pin 4 is equipped with a replaceable formio & vgulkz 10 fixed on Tzom |; n 1i Coy outer surface of the sleeve 10 exists VCHLCHMODRYST Lug members 12 of the drill body 1 yl 4

Description

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The invention relates to metal cutting and can be used for machining holes with a complex surface.

The aim of the invention is to expand the technological capabilities of the drill.

Fig. 1 shows the proposed drill bit for drilling holes with a complex surface in Fig. 2-4;

A drill for circular drilling of holes with a complex surface consists of a housing 1 with a shaping part 2 with longitudinal slits and roaring elements 3, a central pin 4 installed in the inner cavity of the housing 1, spring-loaded 5 and tn1-replenished in the housing 1 1 7 which are rigidly connected with pin 4 with y-1

On it, replaceable pmmoi, with lugs 3 placed behind housing 1 / interchangeable longitudinal slots 9 of housing 1 overhang Rolling diameter of roller lugs Pro surface of the machined part was equal to the diameter of the profile pi / point of the replenished item On pin 4 A replaceable forming sleeve 10 was fixed on it with a nut 1 1 The outermost of the tulk 10 interactions from i rn ″ and the string elements 12 of the housing 1 sched. i game elements 12 VEPPNRNN E wedge protrusions with hole m / pi: HVHO th p ofil set of mold Yu w e /.o sleeves are manufactured with a profile sosln n g

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The drill works as follows. A shaping sleeve 10 is mounted on the central pin 4 and the profile corresponds to the profile of the hole to be machined and is fastened to the pin with a nut 11. In the initial position of the drill, the central pin 4 with the nut 6 is pressed against the support surface 13 of the drill case 1

The drill is fixed in the spindle of the stanke. When machining the hole in the part 14, all parts of the drill perform translational (axial) movement from the machine spindles and rotational movement around the axis. When this cutting elements 3 to contact the roller stops 8 with the surface of the part 14 process the cylindrical surface of the hole. Upon contact of the roller stops 8 with the surface of the part 14, the central pin 4 stops axial movement due to its rigid connection with the axis 7 of the roller stops 8, while rotating with the drill body 1. The drill body 1 continues axial movement, while the wedge lugs 12 come into contact with the shaping sleeve 10, slides along its surface and elastically deform the shaping part 2 of the drill, at the end of which the cutting elements 3 are installed. the elements 3 together with the drill body 1 form the hole profile of the part 14 corresponding to the profile of the shaping sleeve 10

When reverse axially feeding the drill body 1, the central pin 4 does not have reverse axial movement due to the spring 5 holding the roller stops 8, axis 7

which are rigidly connected with the central pin 4, in contact with the outer surface of the part 14. In this case, the wedge lugs 12 slide along the surface of the forming sleeve 10, and due to the elastic deformation the forming part 2 returns to its original position. The motion path of the cutting elements 3 of the drill repeats the profile of the machined hole of the part 14.

Reconfiguration to different sizes from the surface of the part 14 to the profile bore is provided by installing roller stops 8 of the appropriate diameter.

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Claims (1)

Invention Formula Drill for circular drilling of holes with a complex surface consisting of hollow bodies with longitudinal slots and unclenching the body forming part, characterized in that, in order to expand technological capabilities, it is provided with a spring-loaded central pin installed in the drill’s inner cavity, with a forming sleeve and the roller stops behind the body, which are rigidly connected to pin, and the axis of rotation roller lugs located in the same plastic with two opposite cutting elements and mounted for movement in two opposite grooves made in the body, while the unclamping elements of the drill are made on the inner surface of the body in the form of wedge lugs that can be in contact with the forming sleeve. W