SU747606A1 - Method of producing toothed profiles by longitudinal rolling-on - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used in roller rolling splined shafts and gear wheels. The known method of longitudinal rolling of the splined shafts and gear wheels, carried out on the machines of the Swiss company Ernsi Sgob, in which three rolls with the knurled rollers mounted on them simultaneously process the workpiece rotating around its axis. The number of revolutions of the rolls and blanks is in a certain dependence on the number of rolled teeth. The disadvantages of this method include reducing the accuracy of the parts obtained by arranging the teeth on the workpiece by matching the rotation of the rolls and the workpiece without taking into account the magnitude of the inevitable backlashes and mixing the rotating rollers and rolls at moments deformation of the next section of the teeth. At the same time, there is a possible violation of the accuracy in the arrangement of the teeth in both length and radius. A method of manufacturing longitudinal knurled gear profiles is also known, in which the longitudinal knurling of gear profiles is carried out with the consecutive formation of cavities and teeth protrusions by the working surfaces of several pairs of deforming rollers pairwise diametrically arranged around the surface of the workpiece 2. The disadvantage of this method is a decrease in the accuracy of the mutual arrangement of the cavities and protrusions - in the radial section of the part due to uncontrolled mixing of individual rollers under the action of ochih efforts, as well as free play in the bearings and the slackness of all designs. The purpose of the invention is to increase the accuracy of the parts produced. The goal is achieved by the fact that the formation is carried out successively in several stages, in the first stage, cavities and projections of a full profile are molded with one pair of rollers on the board: they are filled with tyrehplaos, and during formation of the cavities and Eyst: Noah ps aer: other parts of a pair of rollers Produce baz krovash sh-workers and superstructures desforms of rollers on the rollers on the previous projections and projections and design, drawing 5, x5, the proposed method, on the back of 1 figure roller 2 EZLN t depressions and protrusions aubev full second. Deforms p} ao cie rollers 3 and 4 have a RRC of a shaped creek, some of which are cut by previously formed waves. to the dynes, subjecting them to elastic deformations and at the same time a guideline: / 1 do not stream their way along the previously formed depressions. The relative position of the hole does not have an effect on the displacement of the deformation. clutches 3 and 4 due to play in the bolster c. This means the elastic deformations of the adjacent parts, since the orientation is carried out directly on the previously formed cavities. On the workpiece 1, the depressions can be deformed in one PASS when the deforming rollers 2-5 are separated along the axis of the workpiece 1, or in several passes, while the mutual orientation of the deforming rollers can be performed only with calibrated deforming. In the manufacture of a shlied shaft with involute spitz according to the proposed method, the shaft has the following minimum parameters: the number of teeth is 2 18, the modulus is 2 mm, the angle of the initial contour. ra. 30 °, outer diameter of the shaft Jj 40 mm, offset of the initial contour X 1 mm. The remaining napaMSiTpbi are needed for calculating, a dividing circumference of cSn is 36 mm, a d main circumference of d ((ff, Cfd), and dividing the circumference of a dividing circumference x 6.28 mm, dx to 1 d of a circumference of cavities dg D 2,4gt1 35.2 mm, you’re a toothbrush h 2.4 mm, The number of streams per roll, deformation of the tooth and forming the tooth, is determined by using the IB condition of the absence of the interfering surface of the tooth and during rotation of the tooth. This condition is mathematically yuzhet be expressed as a requirement for the presence of a common normal at the end points of the volatile leg regions the number of teeth found and the rim of the O4 hollow, i.e., the adjacent teeth, o6pajiieH№ e to the fully tensioned teeth, can be deformed, i.e., tal, per step, .t , then cp / li - 3GO ° / 2 --- 20 ° 1Х) l, which determines the number of teeth in the half-space formed by one roller "- ,. 2arccos d, Vd about where / - O.L Tahim way, one roller can have 4 forms of a thin stream and form 3 teeth full and 4 watts: ag; The order of deformation is as follows: Initially. But deforming: with a roller four hollows completely, then two, the outermost streams of which enter; the extreme hollows previously deformed and elastically deforming them. set pojtttKH with respect to these previously deformed teeth, deform six new cadres, the third row of rollers enters the outermost straps of bites into the extreme deformations of mypods npeAbmjiaHMH trough rollers and deforms the top 6 of the depressions. The remaining two depressions are de: -shaped by a roller installed in the fourth row and based on the extreme previously formed depressions. Thus, yp deformations of the shaft according to the assumption that four rows of rollers are needed. As shown by the drawing and calculation of the bearings, max 4: al-roller diagonal is equal to 100 mm of mm. Each video has 4. The material of wave-steel X12.M steel, surface hardness of 58-63 HRC, Workers and runners are increased. in the special tool on the lathe. All the rollerblade cavities are made simultaneously by a wide circle, the surface of which is formed by a roller conical assembly, which simultaneously forms the entire padding of the dostng - is mutual accuracy; the arrangement of the streams on the cansdal from the rollers. The installation has a head that is a hollow cylindrical matrix - bavdaj with an outer diameter of 500 mm, a t-wall 85 isiM, diameter from & 330 mm and length of 6OO mm, in Marpmie there are cases under. Shu: Mon 1kov- slip rollers, the assembled surfaces of which, when assembled, are a cylinder that enters the matrix along a sliding surface. Collected tfE; The setting is set on a hydraulic force of 25 tons so that detal-al after rolling times; Still in the hole of the press.

On the installation, roll the wa8ts 2 gtart g; , details on 15 items, the first batch of g-a .. is traded by the proposed cfet.o, wto :: /; without the direction of the rollers on the rappea, -: Ps. to the trenches, for which there are two shots ;;;:; :: ;;.:. Forming pomiKOB for-e et ets t-dvgg :, supporting, get shlgle;,:. The shafts froze and were determined; The guards who were supposed to be. reduce the proposed way .- ps,.,

Wrongs of the width of the slots D V N ERRORS;

steps / it. After static processing, measurement of average nano values was obtained.

When knurling with overlapping and 5 0.08 mm, d1 0.1 mm.

When ngsatha is not blocked, the splines are formed (the splines form: the side: the stream of the rollers) l In 0.2 th. ut 0.3 mm.

Thus, as a result of the experiment, it was proved that the direction of the deforming roller on the previously cut-off troughs is essentially SEECONOMY: the accuracy of the manufactured part, which fl- es means the utility of the proposed-C p-paZ.

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LL GSE; tpZh1I Zubachytsts tsrofk-oL;: a: tkoy with a successor-i pgge:.: and protrusions of the 7C5brhp: the rest of the MP several;

; Y; 0 -:; KH TYPREOO-D TaMe1 ozh &y;:-,;.: Around the surface

l -; i: r and y and i so, t: .s; 1I TOHfrocTH oGpaeoiv.

zgnke pospedovaks; t;: g stages: ka first etat gp piggy ii full protrusions; v iB-ijOM: pojrtKOB on the first page:,:; Gyst - billet, and kr and: 2m; kg1: i Bstuyov ka ostal jcTii snroTOBKK by another pair of nsBOiHT- basing pa6o4iix with defornky fucs of ponsiKOB by / gagat :: protrusions and vadknam. t-ppkk information pinned

gfg ykspertize

.jGijrioe state and direction-1-twist: and techno GPU and equipment

: uKa7: :: i threads of T profiles,

180-7, s, 123.

ZBSKY MJ-L Rolling to the point HJ .e. teeth, Mashinostroi, -. (prototype).

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Claims (2)

A method of manufacturing gear profiles by longitudinal knurling with the consequent formation of cavities and protrusions of teeth by the working surfaces of several pairs of deforming rollers pairwise diametrically arranged around the surface of the workpiece, characterized in that, in order to increase the accuracy of processing, the formation is carried out sequentially in several stages: at the first the attack form hollows and protrusions of the full profile with one pair of rollers on the adjacent surface of the workpiece, and when forming hollows and protrusions the rest workpiece surface another pair of rollers produce basing the working surfaces of the deforming rollers on the previously formed depressions and projections. Sources of information taken into account during the examination 1. The current state and direction of improving technology and equipment for rolling threads and profiles *, Voronezh, 1967, p. 123. 2. Pisarevsky ML. Rolling precision threads of splines and teeth, 'Engineering *, 1973, p. 173 (prototype). • h