SU1122491A1 - Device for honing tapered holes - Google Patents

Abstract

DEVICE FOR HONINGING CONIC HOLES, comprising a housing in which grooves are made at an acute angle to its axis, in which spring-loaded pads with spherical supports on the ends are mounted with the possibility of reciprocating motion, bearing abrasive sticks on the ends, with the possibility of relative rotation , a roller and a kinematically connected spring-loaded rod, the conic surface of which is installed with the possibility of contact with the spherical supports of the pads, and the return mechanism but translational movement, characterized in that, in order to improve the quality of the surface to be treated by providing a constant displacement of the trajectory of the honing bars, the reciprocating movement mechanism is fulfilled in the form of a gear ring, which is in engagement with two bevel gears ak (with a number of teeth, and cams rigidly connected to bevel gears and installed with the possibility of contact with the roller.

Description

11 The invention relates to mastic construction and is intended for the final processing of conical holes. A device for honing a ha of tapered holes is known, comprising a housing with grooves located at an acute angle to the housing axis, in which spring-loaded pads with abrasive bars and spherical supports on the ends are installed with the possibility of reciprocating movement, and the base placed on the housing with the possibility of relative rotation , roller with kinematically connected spring loaded rod, the conic surface of which is installed with the possibility of contact with the spherical supports of the pads, and mechanical a reciprocating movement 11. A disadvantage of the known device is that it does not provide high quality processing due to the absence of a displacement of the trajectory of the abrasive bars along the surface to be treated, since it is known that in order to obtain a qualitative surface the kinematics The machine used ensured the non-repeatability of the trail of finishing movements. The purpose of the invention is to improve the quality of the abated surface. by providing a constant displacement of the trajectory of the honing stones on the treated surface. This goal is achieved in that the device for honing tapering holes, comprising a housing in which grooves are made at an acute angle to its axis, in which the sub-sleeves are installed with the possibility of reciprocating translation7 Kine blocks with abrasive bars and spherical supports on the ends, the base placed on the housing with the possibility of relative rotation of the roller and a kinematically connected spring loaded brush, the conical surface of which is installed with the possibility of contact with spherical supports block and the mechanism of reciprocating movement, the latter is made in the form of an ego on the basis of the gear ring. in engagement with two knitting gears with an infinite number of teeth, and cams rigidly connected with bevel gears and installed with the possibility of contact with the roller. In FIG. 1 shows the described device, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section b-B in FIG. one; in fig. 4 is a view of B in FIG. 2. The device includes a housing 1, in which a stem 3 is pressed with a spring 2, with a conical surface in contact with the spherical supports 4 of the shoe 5. The pads 5 with abrasive sticks 6 mounted on them placed in inclined slots of the housing 1 whose angle of inclination is equal to the angle of the cone of the conical the holes of the part 7, and pressed by the springs 8. The sleeve 9 with the roller 10 fixed on it is mounted for axial movement on the housing 1 and connected with fingers 11 to the rod 3. To the housing 1 is attached {a lid 12 in which the mouth Two axles 13 are provided with bevel gears 14 on them that have a non-multiple number of teeth. A cam 15 is rigidly attached to each conical bristle 14 in contact with the roller 10. A gear rim 16 of the base 17 mounted on the housing 1 is attached to the bevel gear 14. A handle 18 is attached to the base 17. The device operates as follows. Detail 7 set coaxially with the housing 1, When entering the housing 1 into the inlet of the rod 7 pads 5 under the action of springs 8 are drawn closer to the center of the stop into the conical surface of the rod 3, which takes up its lower position under the action of spring 2, limited by the position of the roller 10 on the surface of the cams 15 When the housing 1 rotates, the bevel gears 14, rotating together with the cone 1 and wrapping around the stationary gear rim 16 of the base 17 held by the handle 18 (using any known methods), are rotated by rotation, the cam 15. , rolling on the surface of the rotating cams 15, causes the rod 3 to reciprocate in the housing 1, while the block 31

ki 5 s abra: and in mm 1 with bars 6, in the slots 1 of the housing 1, reciprocated under the action of the springs S on the one side and the conical surface of the rod 3 the other. Thus, the amount of movement of the abrasive bars along the generatrix of the conical surface is determined by the value of the vertical movement of the roller 10 in contact with. the surface of the cams 15, driven in rotation by conical testers on 14.A. since the number of teeth of the bevel gears is excellent and not repeated, during the working cycle

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the same combination of cam positions does not repeat, i.e. the magnitude of the vertical movement of the roller, 5 the amount of movement of the abrasive bars along the generatrix of the conical surface and associated with these movements of the trajectories of the abrasive bars along the treated surface are constantly changing.

Thus, the proposed device allows improving the quality of the inner conical surface to be machined by providing a constant displacement of the honing bar trajectory along the surface being treated.

Phie.1

Fig.2Fig., 5

Bifd B (plunged)

Claims (1)

A device for honing conical openings, comprising a housing in which grooves are made at an acute angle to its axis, in which spring-loaded pads with spherical supports at the ends supporting abrasive bars are mounted with the possibility of reciprocal movement, the base placed on the housing with the possibility of relative rotation, a roller and kinematically connected spring-loaded rod, the conical surface of which is installed with the possibility of contact with the spherical supports of the pads, and a reciprocating mechanism reciprocating movement, characterized in that, in order to improve the quality of the surface to be treated by ensuring a constant displacement of the trajectory of the honing bars, the reciprocating movement mechanism is made in the form of a gear ring mounted on the basis of a gear ring meshing with two bevel gears with a multiple of teeth, and cams rigidly connected to bevel gears and mounted with the possibility of contact with the roller. SU.,. 1122491 1 122491