SU623618A1 - Tool for expansion of annular blanks by rolling - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to the rolling of rings and may find wide application in the engineering industry. A tool for rolling ring blanks is known, which contains inner and outer rolls forming a closed caliber, with special gaps between them to remove the excess metal during rolling 1. This tool allows you to get a ring of a given size, both in width and in inner and outer diameters, but it does not provide high accuracy of the ring geometry, for example: face burrs with equal edges are formed during the rolling process, and chamfers and fillets are undecorated. This happens because the gap formed by the mutual arrangement of the rolls changes during the process of rolling and is found from the ends formed by the tool of the caliber. By the end of the rolling process, the resistance to the flow of metal to hard-to-reach places of gauge (facets, roundings) becomes greater than the intended gap formed at this point. This causes a premature exit from the gauge of the metal and the failure of the specified chamfers or fillets. A known tool for rolling ring blanks, comprising an inner and outer rolls, forming a closed caliber, one of the rolls having a shaped surface, and the other a cavity for exiting the excess c1j. A disadvantage of the known construction is its complexity and low accuracy of the obtained products. The aim of the invention is to increase productivity. To achieve the goal, one of the rolls is made with a collar, and the other with an annular groove. as an annular groove. FIG. 1 shows a tool for rolling rings with a profiled surface of internal diameter when the cavity is formed by an annular groove of the corresponding rolls.

2 is

by

. , -; ; and a FIG. 3, y, M; ih g npis rolling

;. i; pC- ab (;; choae: hpost O in the world; -K1u, ;; al K5T | -.: where the cavity is and is formed: zap ..: g b ;;;; uvl c JOIen im sossvpyh chgi: gay t-H--. stray from rolls; pa ;; pch 1 -; .. same, according to BEiyTpesHciMy dia

 -. g; y

{Uu: T ;;: vr .-, j.-Г for rolling KOLCZES 3u, o: ic n-; k; 1g is in the outer i) ZPLok 1 and the inner race. iViiioa BajiOK 2 “And in FIG“ 3) 1 utr-nb: gy roll roll 2

s linked1: x parts 2 °

n

,, with and 1

4 - naru; -: ny

p; lk 1 and 2 obrz.zuyut closed kagg-b-:; erg.1 Irulyugg y when rolling the profile 1: -;:. a 3. In the ib-skos. and sig.-z rtrki ring 3 g. ozlo - : a; -soltsev groove 4 1 1; cc) C 1 (phi;. i. 2 and 4) expired with;: olm. Canag 5, and roll 2 gkkj C / ih ;;: C OyVlTOM b,

I- ;; l ;;. (.;:: Wasps: gi s; 1mg, 1s of the ring 3

; j spear groove 4 for

; metal. Pa fig, Z.-Z ;; i-v-; Tc; z.pnet by itself; do w in ialh:;. from the side of nenpoffiwjni / and the pk er ring. Pa oaz., 3, ate npoj.O-iKa oboazozan;

: ast: -m roll, help, -. also; from the storox nepril-grove; -; Wow jTiaia Miiipa colia.

;; ore, h ria; : e.lo; .- work (f; 5g. 3 and 4j ocyiuecTi;. ;;: n; With a pier of shirKRiT, pore,. right-handedness and with parts of the line that (2- and l and). iiocjifi Etogs1 PK relative polokapel

 ir, syrueg; ::

remains so.1. DS1

OKONPNI TlpO

Essa rolling. fig, 1 2) ring.

With jiaCoTe n.jjTOuca iHiri

: ATS pr; 1 manufacturing

.) cream works; : i.e. icsgrum (lira. f-pfi i'm giving cnshl valcon 1 1-1,., t-rings 3 gradually; / m: L: and 7c and m €; tall fits band tifiKpjroio caliber, formoobraek, kolmda k image; zausege: E: fC: us Jii-OiK f a.

Dimensions ring.-iof; ; Uodochki 1 lodb: ragots such way, that, in; iepiiUK, catgigl for; Syl l her after the sail of difficult to reach, sections 1; al1- sc, clearly SSsrml xaiaie elemlemm sult.a. like chamfers, fillets, so that 1. This gap has absorbed the whole (Oig-iz izllshek IietalJJa blanks.

The location of the annular groove; i to the PLANE of the symmetry of the ring of the ring of goodness-teo-io said the distribution of; 5 J, 1-jal; a in caliber when rolling.

The burr thus obtained and the profilation of the diameter of the ring, interferes with its Ds LH of the trasiiiiOfriipoBicc and can be removed on oGpGiifioM or pierced stamps with the same gauge. This allows you to maintain a complete a.E-iomatism of the manufacturing process: use of highly advanced equipment.

Formula v; i acquiring

H: -; stru1,: ect for rolling the ring. v-v blanks f containing internal -.1 g: py} xny rolls, forming a closed. ::;: .-: alibr, with one of the rolls;: there is a profiled surface, and the other is a cavity for the release of excess metal, which distinguishes, in order to improve the accuracy of the products, one of the rolls is made with burto.m, and the other - from the ring plate, with it5, when rolling the collar, without opening into the annular groove aah; that the caliber does not protrude beyond the groove, and that the cavity for injecting excess metal is made in one of the rolls as an annular

TRETS.

Sources of information taken into account during the examination:

1.Volume shmpmpovka. Seminar materials, N., 1973, p. 62-65, My house ITP them, F. Dzerzhinsky.

2. US patent 3992929 cl. 72-105 23 L1 L6.

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