SU715304A1 - Honing head - Google Patents

Description

(54) HONING HEAD

one . The invention relates to the field of mechanical engineering and can be used for roughing and finishing holes. . The honing head is known, the housing in which is installed with the possibility of interaction with two groups of pads with honing bars an expanding rod, while the pads of one of the groups are equipped with a compensating device 1.. The disadvantage of the well-known head is that at the time of operation of the head of the diamond block, the nBpli bars are in the expanded state by the size of the hole in which they are laid, and the reduction in the measured diameter by bars in the process is impossible. for a small angle of the expanding cone. Therefore, with significant initial geometric errors of the machined: holes (taper, ovality, etc.), the tool moves from a zone of a larger diameter of the hole to a zone to a smaller diameter without changing its size in diameter. As a result, the specific pressure of the beam increases. on the machined surface, which leads to the scuffing of the machined surface, intensive wear of the honing stones, and also the wedging of the head in the hole. The aim of the invention is to increase the durability of the honing stones and the quality of the surface to be treated. For this, the compensating device is made in the form of an adjustable gland that is installed with the possibility of interaction with an expanding rod, longitudinal and transverse columns and spheres, the longitudinal columns being bevelled on one side and transverse on both sides. FIG. 1 shows the proposed head; in fig. 2 shows a section A-A in FIG. The honing head consists of body 1, in the grooves of which pads 2 and 3 are placed, bearing on themselves diamond bars 4, an expanding cone 5, placed in the central hole of the body. The block 3 consists of supporting transverse columns 6, balls 7, longitudinal columns 8, central ball 9, rusk 10 and spring 11, which is held and adjusted by screw 12. Before starting work, block 3 is compressed and Spring 11 is tared (adjusted) with screw 12 somewhat greater than the maximum allowable pressure on the surface of the diamond bar at. normal operation of the instrument with a given required specific pressure, which provides all the dependent requirements of the technological process, the honing head works as follows. After inserting the head into the machined hole, the heads of the latter are reported in a vertical and reciprocating motion, respectively, around and along the axis of the machined hole from the machine spindles. Then, the machine unlocks the system, and the cone 5, moving into the hole in the axial downward direction, expands the pads 2 and 3 in the radial direction against the surface to be treated, thereby creating a specific pressure on it.

Since the pads 2 and 3 with diamond bars 4 perform rotational and reciprocating motion, respectively, around and along the axis of the hole being machined, with significant initial geometric errors of the hole being machined (taper, ovality, etc.) in areas of small diameter increases specific pressure of a certain size.

When the force perceived by the surface of the diamond bar exceeds the elastic force of the spring 11, the supporting transverse columns 6 put pressure on the balls 7, and they in turn on the longitudinal columns 8, which push the ball 9 and the cracker 10 into the hole, overcoming the elastic force of the spring 11. At the same time, the supporting transverse columns b are recessed into the body of the pad 3, the height of the pads is reduced.

A honing head comprising a housing in which is installed with the possibility of interaction with two

groups of blocks with honing bars expanding rod, while the pads of one of the groups are equipped with a compensating device, with tl ich, and with the fact that, in order to increase the stability of honing

bars, compensating arrangement. The device is made in the form of adjustable gland pressure stop, which is installed with the ability to interact with expansion rod, longitudinal and transverse

columns and balls, and the longitudinal columns are made with a bevel on one side, and transverse - on both sides.

Sources of information taken into account in the examination

i- USSR Copyright Certificate No. 343833, cl. In 24 VZZZ / 02, 1970. ki with respect to the axis of the cone 5, the diameter of the head is thereby reduced, thereby stopping the growth of excessive pressure of the bars on the surface to be treated. After the tool passes an unfavorable area of the treated surface, spring 11 pushes the Ball 9, which expands the longitudinal columns 8, and they in turn, through the balls 7, push the supporting transverse columns b out of the casing 3 holes, and the latter takes its original position (height) about the axis cone 5, after which the head continues to operate under normal conditions. The design of the proposed honing head enhances the durability of the honing stones, since cases of tool jamming and scoring on the surface to be treated when working with the proposed head are excluded.

Phage.

D- / 4

Claims (1)

Claim A honing head comprising a housing in which the expandable rod is installed with the possibility of interaction with two groups of pads with honing bars, while the pads of one of the groups are equipped with a compensating device, so that in order to To increase the durability of the honing bars, the compensating device is made in the form of an adjustable adjustable stop, mounted with the possibility of interaction with the expanding rod, longitudinal and transverse columns and balls, and the longitudinal columns are made with om the one hand, and the cross - on both sides,