SU891220A1 - Method of dimension adjusting of two cutting tools - Google Patents

Description

I

The invention relates to machine building, to methods of dimensional tool setting.

There is a method of dimensional podnalatski with thin boring step holes, providing separate tsalnadku two incisors.

The disadvantage of this method lies in the fact that for separate adjustment of douh incisors and deformation of the mandrel in the nth planes, the presence of two independent adaptment actuators is required.

The purpose of the invention is to simplify the adjustments due to the deformation from a single drive.

This goal is achieved by the fact that the mandrel is deformed in the plane forming with the planes, passing through the tips of the incisors, sharp central angles, the values of which are chosen depending on the ratio of the cutting paths of the incisors.

The specified location of the plane of deformation of the mandrel provides

dimensional adjustment of two cutters from one drive, with each cutter being given a radial displacement proportional to the amount of wear of the cutter when machining the part.

FIG. Figure 1 shows the processing scheme of a stepped hole with a boring mandrel, (the plane passing through the axis of the mandrel and the pusher of the subdaloki drive is conventionally aligned with the plane passing through the axis of the mandrel and the top of one of the incisors); in fig. 2 and 3 are diagrams illustrating the dimensional adjustment of the incisors for possible variants of the angular location of the plane of deformation of the boring mandrel.

Claims (1)

The incisors 1 and 2 are mounted in the case body 3 at a distance of 2-1 and 6 (1, respectively, from the cross section in which the case is acted upon by a follower actuator pusher 4 (not shown), the axis of the pusher being displaced from the axis of the mandrel. The cutter 1 is intended for machining in part 5 steps with diameter D-1 and length L / i, and cutter 2 for machining steps with aHaf4er-rom Dijji with a length of 6g Cutter ii bore-curved cutter 1 with a square, the value of which was chosen from the condition of minimal deformation mandrels - under the action of cutting forces when cutting incisor cutter a short step for selecting a dimensional setting (the third cutter. The reforming plane of the boring bar (passing through the axis of the mandrel and the pusher 4) is arranged so that it forms, with the planes passing through the tops of the cutters 1 and 2, the sharp central angles of the blade. gots. This is the deformation of the boring mandrel (yud action drive podnalashsi n: i-voag to ugshscheniyu radial flights of both incisors relative to the axis of rotation of the mandrel | as illustrated by the diagrams shown here. in figs 2 and 3, here b are b planes and - 01 planes passing through the axis of rotation of the mandrel and the tips of the incisors 1 and 2, respectively; c s is the onpaBKN deformation plane; the angle between the incisors 1 and the angles between the incisors 1 and 2 and the incisors 1 and 2, respectively, passing through the axis of the mandrel and golkat 4 of the subplaring drive; cut out cutters 1 and 2, respectively, relative to the axis of rotation of the mandrel when the drive position is pushed, the drive fed OK;, and О Rk - then jKOs after moving the tusher by the amount of adjusting. When deforming the mandrel shown in FIG. 1, condition e-1 b is fulfilled where ( L, I, and, the movement of the incisors I and 2, respectively, in a direction parallel to the c-Cj plane during subsetting. The corresponding ratio of the increments of the incisors of the incisors 1 and 2 relative to the axis of rotation of the mandrel (Fig. 3) depends on the angular position of the plane c - c (on both figures Neither angles Γy and magnitudes. и and you are the same.) The graphic construction can be in the early horizontal position of the plane with the deformation of the mandrel {angles 41, and i, at which the condition d-1 - p - Lh i JPQ and zr | 2 cutting the cutters 1 and 2, respectively, when machining a part; 13 1, DQ and L, diameters and lengths of the stepped hole being machined. This causes the cutting tool to radially move each cutter when the mandrel is deformed under the effect of the retraining drive . Condition (I) can be ensured by positioning the plane sec from between the incisors, as shown in FIG. 2 (for example, PRP LpJs or on the side of the cutter 1, as shown in FIG. 3, (for example, priori), the Technician’s — the economic advantages of the new method are to provide two dimensional cutters of two cutters installed on the boring bar at the same time drive, which makes it possible to significantly simplify the mechanism of the sub-wedges of the Sh1 tool for one-sided machining of stepped holes on finishing boring machines and increasing the accuracy and surface quality of machined holes, firstly, due to the possibility of installing at the optimum angle to each other; secondly, the ad account for ensuring that the incisive movements of the o6eiix incisors is proportional to their wear. Formula of the invention The method of dimensional adjustment of two incisors installed in the boring bar at an angle to each other, in the plane, perpendjul relative to the axis of the machined holes, which consists in the elastic deformation of the bore mandrel, characterized in that, in order to simplify the additional adjustment due to the deformation from a single drive, the mandrel is deformed in the plane forming the plane Sharp central angles passing through the tips of the incisors, the values of which are chosen depending on the ratio of the cutting paths of the incisors. Sources of information taken into account in the examination of I, USSR Author's Certificate No. 343776 Cl. On 23 May 25/06, 1972. p  ; " Figg