SU1703278A1 - Boring head - Google Patents

Abstract

The invention relates to metalworking and can be used in the processing of parts on machine tools mainly finishing and boring. The purpose of the invention is to improve the quality of the machined surface and the accuracy of machining a set of interconnected surfaces of a part consisting of two nominally coaxial holes and ends (ends) due to removal of the boring cutters from the machined surface and reduction of the end beats of the cut end (ends) relative to the common axis of two machined holes. For this, the boring head, comprising a housing with a central hole, carrying tool holders with boring and cutting cutters, and a stem mounted in the central hole of the housing with axial movement under the action of the actuator and interacting with the tool holders, are fitted with stops in the housing and on the stem flat surfaces made in the same axial plane and on the same side with respect to its axis, designed to interact with the stops and the cop surface 7, with respect to which the springs The tool holders with boring cutters are not, the flat surfaces are made opposite to the axis of the rod, the copier surfaces consist of two sections, the first of which are parallel to the axis of the rod, and the second oppositely opposite to it. while the tops of the boring incisors are located on one side relative to the axis of the head. The stem can be made of two parts, the first of which is designed to interact with tool holders with cutting tools, and the second with tool holders with boring tools, both of which are connected to each other by means of compression springs installed in a cavity made in the second part stem, (olive can be equipped with a sleeve installed between the compression springs. 2 Cp f-ly, 11 il. from VI o GJ Yu VJ 00

Description

The invention relates to metalworking and can be used in the processing of parts on machine tools mainly finishing and boring.

The purpose of the invention is to improve the quality of the processed surface and the accuracy of processing a set of interconnected surfaces of a part consisting of two nominally coaxial holes and an end face.

(ends), due to removal of the boring incisors from the machined surface and reduction of the end beats of the cut end (s) relative to the common axis of the two machined holes,

FIG. 1 shows a boring head; figure 2 - section aa in figure 1; on fig.Z - section BB in figure 1; Fig, 4 is a section bb In figure 2; figure 5 - section GGD fig.Z; on

FIG. 6 is a plot for DD in FIG. 5; figure 7 - section EG: fi /; on fig.Z cut WF in Fig.7; me fi-- .; - ralrez 11-I from fig.O; 10 is a variant of the first and second communications links .-- 1 L; J :; hh, on php.1; 1 - variant of execution of p ;;. t. ;; chpom go / yu and about trimming of the ends of width 1; d :: yr1: ch1N1.; mi roztsamch with the oceu method ;. ; iojU ii.

KorPu (.. HEADS (THREADS FROM LAST)

bonded iii. ib3; a and og. 16. sleeve 1a case; i ei.r boring tools

2 and 3, RLGSGOYANTS L: r- PZDU piPrG penny

into one of that g / r Op uppusn vorshinnmi which, H: iM. ;; jf; -HH- - i :, axis, is equal to

РЗССТОЯНИ .и., М.:, ... .prf. lHHMM notlfipCVIHUmi Sechonipmi g-o -; . about (faith un i d and daxb.

In OCH Hni r. I k.Gg ML SYA i LOCATED CUTTING it- OTr.i - - t n.; G. meGGYIEM IV

radial co, -,; fmg.1 and 8V In centrolny oi pgf p; sor.n, i, i 1 Thu Annshpen. Capability-by. G. ;. under impact; iip -ii / ij P :. hy () ipok 6, vyg10 / npnmm | , v; ;., LITP of which the prel.nosnpch from; . (lhr .: ... and mod.1 ist oftwil with mezhariz scrap GU u-uiii -i. ii-i teach the incisor i and G / l ni u. jr - / p yc.i anoioch cr (mixed ° pa (i; bi. ;; r-ztsoo 2 and. L p of which is at e t -) h 1 g. Of the main axis of the zone is scoop 1 by .V V. ... :: v, .i with vertices re.chtsoi 2 i} sts1r -; 7 irKOCHie / iiiiiO axes ka b Dbii iu / iri -; ii.i iM iri; Hj- yg, surfaces inclined K AXIS. GOKZ and / H.ES1KI 76 AND 86 WHICH Hlpr -vl;:;:,.,.

plots 7h and Gz s: I; LH o nl; / allelic lights of rod 6. and flat foot; |;; :: nose1 and 9 and 10, OPPOSITE MD; ,, Yun (ys: to its axis at an angle / (figure 5)

In perpenliku. mfmyh to the axis of the rod i.i nriri npis: formed by the walls of the grooves of the gips 1: imus 1 v1, the main segments of the KpU iiOK 11 and i /, the tool holders 3 m N. Cg / 1 “articulate 15 and 16, spec. about the tool holders 13, 14, through the - - - t of the irradiated springs 17 and Shpodo} 1L, the foxes come into contact with the sections 7l, 76. 8z, 8p of the grips of the surfaces. SCH ROWIGPO pal-dzm U. 16 in the openings of the rig: hz (::. 1Рр :: - Ч1е /. Е 13. 14 pushers are placed under the lateral spring .. adjustable with threaded itpo6o-: 21, they are used with flat surfaces: 1m, made on the second part of the so-called google 0, parallel to the inclined sections 76 and 85 of the copying fires. Pa.mtsm 1b, 16 and the plugs 21 are locked up 22 and 23 by means of prosthevok 24 nj c: - .n, c, mt splrga. thus, the reztselderzh 1 13, 14 is constantly resiliently pressed to the –m; to the g: op; -;: ryg-5 surfaces.

image backlash transmission copier tool holder.

 Ladles 2 and 3, adjusted to the size of the bore holes with ainta 25, through the pushers 26, fixed and adjusted in position by clamping screws 27, are installed in the tool holders 13, 14 next to the fingers 15. 1o. Setting the cutters 2, 3 is made in

0 working positions of toolholders 13, 11. i.e. cutter 2 is set to machining size ch, when finger 15 contacts with section 7fi of the copier surface, cutter 3 is sized to size d2 when finger 1 is in contact with section

5 86 copy surface, and di d2.

In the sleeve 1a of the housing 1, adjustable stops 28 and 29 are installed, which interact respectively with flat surfaces 9 and 10. Along the axis of the rod 6 on

0 the surface of its second part is made onioke 30, s; the side walls of which interact parallel to the plane of the correcting finger 31, installed in the case 1e i of the housing 1. The axis of the groove 30 lies

5 g-planes, passing in the middle of the width of the coping surfaces and cross-section of the rod 6. But the groove is opposite when it is flat and flat, 9, 10 surfaces. The axes of the lugs 28 and 29 are located in the continuum plane of the sleeve 1 of the housing 1, pass-through Through the axis of the central bore of the housing 1 under the stem G and the Maltz axis 31, which, together with the groove 30, determines the position of the stops 28, 29 in the plane extending in the middle of the width of the coping surfaces. The gaps between the walls of the groove 30 and the planes of the finger 31 are minimal, with the left (Fig. 6) wall of the GE groove strictly parallel to the axis of the rod.

The longitudinal opening of the sleeve 1A of the corus i is closed by the end cap 32.

Perpendicular to the axis of the body 1 of the flat guides formed by the groove walls of the bases 16 of the body 1 and

5 with a molded end of the sleeve 1a of the housing 1, a radial feed mechanism of the cutters 4 and 5 is included, including a slider 33 and a counterweight 34, the radial movement of which is limited by stops (not shown). In the axial bore of the base 1b of the housing 1

0, a first portion 35 of the stem G connected to a drive (not shown) is located. Oppositely directed helical strips made on parallel planes of the first part of the 35th stem 6 are in engagement with the slats 36 fixed on the grip 33 and the counterweight 34, in the grooves of which the prismatic rods 37 and 38 are installed, with holes under the scoring cutters 4 and 5. Cutters 4 and 5 are adjusted for size

lengthwise machining with screws 39 and fixed in the adjusted position by clamping screws 40, with the tip of the semi-finishing cutter 4 adjusted to the size of the machining taking into account the allowance for the finishing pass and located at a somewhat larger radius relative to the axis of the housing compared to the finishing cutter 5. Access the screws 39 are open constantly, to the screws 40 - in the extreme (maximum along the radius) position of the slider 33 and the counterweight 34 due to the cuts 41 on the flange of the sleeve 1a of the housing 1.

The head of the bolt 42 screwed into the first part 35 of the rod 6, through washers 43, interacts with compression springs 44 and 45 placed in the cavity of the second part of the rod 6 and adjustable by means of a nut 46. Between the washers there is a compensator for the difference in the lengths of displacements of the first and second parts of the rod b, made in the form of a sleeve 47, the length of which is calculated by the formula

Pk b + Snp Sm, where b is the height of the bolt head 42;

Snp is the length of movement of the first part 35 of the rod 6 between the stops;

Sui is the width of the displacement of the second part of the rod 6 which is adjusted by the stops 28 and 29.

The boring head works as follows.

Before starting the operation, the first part 35 of the rod 6 with the bolt 42 moves to the right, which is transmitted through the spring 45 to the second part of the rod 6 and through the sections 7a, 76, 8a, 86 of the coping surfaces and the fingers 15, 16 - tool holders 13, 14 with cutters 2 and 3. The movement of the tool holders 13, 14 stops at the first position (when the rod b stops on the stop 29) when the finger 15 contacts the inclined section 76 of the left-hand copy surface, and the finger 16-joint 8a of the right-hand copy surface.

At the same time, the first part 35 of the rod 6 by means of a helical transmission informs the slider 33 with the cutter 5 and the counterweight 34 with the cutter 4 a movement to the axis of the body 1, limited by the stop of the radial feed mechanism so that it ends some time after stopping the rod G on the stop 29. Continuing movement of the first part 35 of the rod 6 leads to additional compression of the spring 45 and does not affect the positioning accuracy of the toolholders with cutters 2 and 3.

In this position of the head elements, it is ready for the chisel to bore 3 holes d2 x b of the workpiece, which is currently outside the right

butt head. By feeding the part to the left or the head, the specified hole is bored to the right (the tip of the cutter 2 is located below the allowance left for the final boring of the hole di x Ei and does not touch it). The movable working body of the machine is stopped when the cutter 3 has left the bore hole, the cutter 2 is outside the left hole of the part, behind its right end, and the tip of the cutter 5 is at the same level as

0 trimmed butt, and in diameter, as the tip of the cutter 2.

The drive reversal informs the first part 35 of the rod 6 to move the oleo. When this occurs, the butt ends are trimmed with incisors 4 and 5 due to the displacement of the slide 33 and the counterweight 34 from the axis of the head to the periphery. At the same time, the chaff of the bolt 42 moves, the head of which passes to the touch with the left washer 43, the path defined by

0 sleeve 47.

Movement through the spring 4-1 and the nut 46 is transmitted to the second part of the rod 6 and further through the copier surfaces and fingers 15. The 16 tool holders 13. 14 with the slabs 2. 3.

5 When the stem 6 is stopped at the moment of contact of the stop 28 with a flat surface 9, the tool holders 13, 14 are in the 9th position: the finger 15 contacts the unit 7a with the left copier surface i..and pslets 1 b

0 - with the inclined section 8a of the przga of the copier surface, i.e. Vorshin-h reztsz goes to size di. The cutter 3, which has finished boring, slightly lowers the M-key surface dj.

5 Continuing after stopping the second part of the stem 6, undercutting the end face causes additional compression of the spring 44 and stops when the slider 33 and the counterweight 34 stop at the stop. First part 35

The rod 6 also stops, the radial feed mechanism is turned off.

At the end of the trimming of the butt end, from the supply of the movable working body of the machine and the opposite direction. Wherein

5, the cutter 3 is withdrawn from the bore hole without damaging its surface. Rez i 2 bores hole x x | i backwards whereby the surface of the hereditary also remains intact (per

0 cutter 3 is below the surface of this hole). After finishing 1 boring, the working body of the machine on an accelerated course retracts the part or the head to its original position.

5 The radial component of the force arising on the second part of the rod 6, when the flat surface 9 comes into contact with the abutment 28 (or the flat surface 10 with the abutment 29) presses the second part of the rod 6 against the top

; -

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-one . .. .-- ..; ... :: .. :::; g; / y ii. i lf t;: -....; in, -) - og in the end: .., ..; i.; i..in--; K: i torcings (: “.; G.”) and GC.

. . t g- R. GUNI11- / p ... | .j:: - :, 1:.). Move -. - i;, in lei to swarm iioo yu ,, ,,: “before the con-. : t; .connect; is . i focus 62.

:; ... ...; ,,. .j -.;. --oitaetszzue: -o.chiiii chisel: -i ... - ;. , ,,. (:;,. KOGD5 P, 3; m i; i KTHpVei С:; .-:. .I--: -:: - V40CTKOM O /:; fXOH COPIER

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, -: -: - n.; - o .. (feathering h v -;: uo 3 ne. how many.: /, oi oG; workingTg.P and; and mopsr / mosgi o i), a

   ,:, -: about contigggg i v l-v.Ti-fM 5Rj npa ..-.;. yy P1 1 Yu noEf: ri: .--. with gi f: ..--; i: i, an re ce- .. f.-iiii.nL.borocn i o.iCF: - -. ik - .. L.- i: i .ina cutter

...,: on cl; .j.

:. ..,.;: - -g. Ngoi.GmK p1egali or r.d): -o 1io-; | head: .-; 7 oProtnom. Poizpg 1.:-. p.tachia; - ..- gkmtspm 2 hole -; -, .-. h. i-surrender adv., jiO. When oGfi repts-h gyhod-t a. left I.JD.IV holes, p T.,.: AJ KAKIM from y-isiix (i this position is g (, yy / psinnliv-; .ch pc; ijdegzhetypyi and period 1 or 1; and , ". X., - ::.: I. :: r.;, I and an ice 54 to kongokt. - tloskosg 59 with;:; i ti-, -:,; :: J), ..; M 60 , after megs 01i. -dn1 "source: -, L.,. H m; -., .. o6r bo ---; 2nchu; o.e1 - / h-mi ... ..... ..... m .. Vr;.;:.;, to the mountain-, p .-; lp. calsna to about ...... |., - to the next ke., ..

.i bottom prize winner: h .-. cosiness pro. r -; /. ic,:; anaPKa 30 S1 Ug: DSiJ :( K. TSI PEL6TS

g.; x; -o zhhku sh-ok peo. :) sred; tveino 1:: .-. . : .., -,: ..;; -. m; r driven. i.;. j ..- i.-rv. done

a device that determines the angular position of the rod 54 (not shown). For the same reason, as well as due to the lack of need to ensure in this particular case a particularly high dimensional accuracy of the holes, the inclined planes 59 and 61 are made at an angle only to the axis of the rod 54.

The boring mandrel with di d2 is similarly performed and operated.

A combination of the forest part of the boring head according to FIG. 11 with the design of the main part of the stem, tool holders, etc. From the first example, and also vice versa, a combination of cutters for trimming the ends mounted on the slider and counterweight with a boring head for boring the holes di d2.

Similarly, the left-hand portion of the stem of FIG. 11 is made in cases where the tool holders, along with the boring cutters, carry cutters for trimming the inner ends of the bore holes.

In the drawings, the boring head is depicted in a horizontal position, but in reality it can be mounted on a spindle, arbitrarily located in space. Particularly expedient is the vertical installation of a head of considerable mass, of reduced rigidity, since, with a different arrangement of such a head, its deflection is affected by its own weight, which makes it difficult to achieve the objective of the invention. This phenomenon is characteristic of other well-known boring arbors without additional support for their end.

Claims (3)

1. A boring head, comprising a housing with a central bore, carrying tool holders with boring and cutting cutters, and a stem mounted in the central bore of the housing with the possibility of axial movement under the influence of the actuator and interaction with the tool holders, characterized in that, in order to improve the quality of the machined surface and the accuracy of processing the set of interrelated surfaces of the part consisting of two nominally coaxial holes and the end face (ends), due to drainage boring incisors from of the machined surface and reduction of the end beating of the cut end (s) relative to the common axis of the two holes to be machined, it is provided with stops installed in the housing, and the rod is made in one axial plane and on one side relative to its axis, flat surfaces designed to interact with the stops, and copying surfaces, about which the tool holders with boring cutters are spring-loaded, the flat surfaces being opposite to inclined to the axis of the rod, the copying surfaces consist of two sections, the first of which are parallel to the axis of the rod, and the second oppositely inclined to it, while the tops of the boring incisors are located on the same side relative to the axis of the head. 2. The head according to claim 1, characterized by in that the stem is made of two parts, the first of which is intended to interact with the tool holders with the cutting cutters, and the second with the tool holders with the boring cutters, both of which are interconnected by means of compression springs that are additionally inserted into the head and installed in the cavity made in the second part of the stock. 3. A head according to claim 2, characterized in that it is provided with a sleeve installed between the above compression springs.   , / W c T v. Us bb 18 R 36 75 15 18 17 ii7 43 2S 3 20 & 45 7a R wasps 8 / 2COZL ff-ff d-gpf  X X / //////////Л  L E-Ј 35 1S Fi g. 8 1 AND AND v Fig 9 35 W 46 ffif C5 FIG. w Work piece 57a 1557S f 2 56 16 585 58 a II Р.11.11