DE1777226A1 - Method and device for fine machining, in particular for tumbling workpieces - Google Patents

Description

PATENT Attorney * ί AUG. 1970 Dipl.-Ing. E. F. EITNER "" ^ oo.

8OOO Munich 90 1777226

tohlotthauaritraSaS Tel. (0811) 602321

P 17 77 22Ö 8-14

Do Hoc ic ley Chemical Co. Lud., Hückley Hill, Birming-II on 18 (County of Warwlok)

Method and device for fine machining, in particular for tumbling workpieces

The invention relates to a process xu «fine machining, inube: ionderü turn drums of workstUoken, in which the WerkitUoko in a« revolving, in the fol- ι, νuuvη aiii Troranel called iiehülter with or ohηυ addition "von Uchloll" bxw. Po11ermanten or the like, in order to become ^ ewttlxi. Feraor looks at the firing on a device in order to carry out the process.

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When drumming, the objects that are deburred, polished, ground or otherwise Catfish are to be surface treated, usually together with an abrasive or polishing agent of coarse or fine grains are placed in a hollow container, which can be used as a drum or as a Roll or Soheuerfaß is called. The work Pieces and the processing agent are usually poured into the drum through an opening, which then attached to the drum by means of a Lid is closed. The drum is then set in rotating and / or oscillating motion, about a relative displacement between the workpieces and the processing means, if such is provided, to produce, whereby the workpieces are ground, polished, deburred or in a sonatige manner * be subjected to a surface treatment.

The invention is based on the object of creating a method and a device which are more economical. In particular, faster implementation of the tromae treatment

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This object is achieved according to the invention in that the drum rotates around two at the same time intersecting axes is rotated, the speed of rotation of the drum around one of the two Axes is much greater than the speed of rotation of the drum around the other of the two axes.

In order to carry out this procedure, inventor ™

According to the invention, a drum is advantageously provided which is carried by a drum holder and rotated about the two axes by means of gear drives. According to In a particularly expedient embodiment of the invention, the drum is partially used as the drum holder uses a comprehensive bracket which is rotatable about an axis, which is that about which the troarael is rotated with the greater speed of rotation.

Further advantageous features of the invention are given in the following description with reference to the drawing explained in more detail. In the drawing, the invention is illustrated in one embodiment, for example.

Fig. 1 leigt partly in section, partly in side view a drum device according to the invention,

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Fig. 2 shows a schematic side view of the drum device according to Fi ^. 1 together with a drive device and a device for further processing of the workpieces after drum treatment.

As can be seen from Fig. 1, the device has a drum 10 for receiving the to be treated Work pieces. This drum 10 is in the form of a hollow, spherical metal container, which with each other diametrically opposite pins 11 and 12 is provided. The pins 11 and 12 are rotatable in Bearings I3 and 14 supported by a yoke-shaped Bracket 15 can be worn. In the wall of the drum 10 a round opening is provided, which access granted to the interior of the drum. A tightly closing cover 16 works with this opening together, which is in its closed position by suitable screw caps or clamps on the drum 10 can be attached and its inner surface has a part-spherical shape, so that it is a continuation the spherical inner wall of the drum 10 forms.

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The outer surface of the bracket 15 is attached to the lower part of a bracket shaft 17. The 3U ^ eI λ-j has two spigot legs 18 and 1 ^, which bend them from the shaft If exactly outwards and downwards and on their our lands the bearings Xj and 14 door carry the xroiiiin pegs 11 and 12. The liügelwelle 1 / is carried with its vertical axis in the upper and our La ^ e xn 2υ and 21, the inside A

v) n a ji-ii \ i: o ^, on üuouell, i {ahmen od.dtil. 22 held v / ground. At its upper end there is the BU- _tj elwelli. 17 a nexxacheibe 2j, over which the DU- ^ e! Shaft 17 is driven by a belt drive 24 by a llauptrnotor 2 ^ (Fig. 2).

On do.ii eLji'iii Zapi'en 12 of the drum! Zapfen 11 unu 12 d <ii "drum 10 1st between the drum Vj unu" α · - · in U; nao / marten IiU ₄ ^ eIsehunkel ^ j dea BU- ^ cIm 1 ^ ui; i Κοκ υ Ix-ad 2f) attached, which miu another iio .-. eirad 2 / in Kingriff, which is on the an WHU ... n ·. · i-.Li. '. ii ' Ti'lebwuLlü 28 raised ii; t. The i'ri inwelle 2ci 7 »'t'luuft- Ln vertical-r JUchuung through; -n uU ^ .t L-i'-h'iriKul Ij and is l in the same in i.Oiil ^ iw · ... , in ler Ζ * - · 1ι: ηηυη _ο nlcnt closer (iai>', oute llLen La- . · i.ii df't;n:>ai' ίΛ 't.'i ^ .Oi't . Au l dom uiJiii't! « customers of this ιΐί, υ.ν lie, U i.ji. « in .j < inuahnrad 2 ⁽ J attached,

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which meshes with a further spur gear ~ j> Q , which is arranged concentrically to the Bütjelvielle I7 and attached to the stationary frame 22. When the bracket 15 is set in rotation by the drive motor 25, the spur gear 29 carried by the bracket VS at the upper end of the drive shaft 28 moves around the stationary spur gear 3> 0. As a result, the drive shaft 28 is set in rotation, which rotates the bevel gear 26 seated on the drum journal 12 via the bevel gear 2 ' . In this way, the drum 10 is set in rotation about the common axis of the journals 11 and 12. The transmission ratios of the bevel gears 26, 27 and the, spur gears 29 and j) 0 are chosen so that the speed of rotation of the drum 10 around the axis of the drum journals 11 and 12 is significantly lower than the speed of rotation of the bracket I5 about the axis of the bracket shaft I7.

Since the BUgel I5 is rotating at high speed rotates around the Aohse of the bow shaft I7, the workpieces contained in the drum 10 and processing means radially in Besufc on the temple shaft axle outwards against the inner surface of the

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Drum wall spun. Since now the drum in turn around the common axis of the pin 11 and 12 rotates, the workpieces and processing means thrown against the drum walls are continuous brought closer to the axis of the yoke shaft and then again under the action of centrifugal force thrown away from the yoke shaft axis. This creates a continuous back and forth movement of the workpieces and the grinding or polishing agent or other processing agent relative to one another generated, whereby an effective finishing such as deburring, polishing or the like. is achieved.

After the drum has been rotated around the two intersecting axes of rotation for a sufficient time is, the drum is brought to a standstill so that the lid 16 is directed downwards. Then f

the lid 16 is opened and the treated work pieces fall together with the processing means downwards onto a shaking or vibrating screen 51 arranged below the drum 10. Above the Vibrating screen 31 runs a pipe J2 through which by a pump 33 water is pushed through a number of holes in the pipe and hits the vibrating screen 31 in the form of water jets downwards. The effect of on the vibrating screen

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water jets impinging on it is such that, since the treated workpieces move from one end of the same to the other end as a result of the vibrating movements of the vibrating screen 5I, processing agents, chips and other processing residues are washed out through the vibrating screen and flushed into a collecting container ^ 4. The processed workpieces are conveyed on the vibrating screen 3I via an extension 35 of the same into a receptacle J> 6 .

Since the speed of rotation of the drum 10 around the vertical axis of the bracket shaft I7 is essential is larger than the previously known drum devices in which the workpieces in a Drum are circulated. And, according to the invention, a movement of the drum about two intersecting axes takes place, the processing of the workpieces is much faster than with the known Drum process, whereby a higher performance and a saving of working hours is achieved.

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Claims (4)

Patent claims: 1. A method for finishing, in particular for tumbling workpieces, in which the workpieces are stored in a rotating container called a drum with or without the addition of grinding or polishing agents or the like. are circulated, characterized in that da3 the drum is simultaneously rotated about two kreuiende ύ Acnsen, wherein the Umdrehungsgeschwindigiceit the drum about the one of the two axes wesentlicn _t horses than the Umdrenungsgesonwindigkeit the drum about the other of the two is Aohsen. 2. Vorriciitunü for the implementation of the method according to claim 1, characterized in that the drum (10) carried by a drum holder and means of toothed gears (26, 27; 2 $, j5ü) around the two - Acnaen is threatened. 3 «device after connection 2, marked daduroh, that the drum age consists of a bracket (16), which is rotatable about the axis of a shaft (17) «which Aühfje dlojonige iut, um dio the drum (10) rotated with the greater rotation speed will. - 10 - 1098U / Q868 4. Apparatus according to claim 2 or 3, characterized in that that the intermeshing gears (29, 30) of a gear train on the bracket (15) or on a fixed part (22) and the interlocking toothed or bevel gears (27, 26) of the other gear transmission are arranged on the bracket (15) or on the drum (10). 5. Device according to claim 4, characterized in that the toothed or bevel gears (29, 27) arranged on the bracket (I5 ) sit on a common shaft (28) which, during operation, causes a circular movement around the pivot of the bracket ( 15) . 101814/0888 BATH ORIGINAL Blank page