SU1252174A1 - Arrangement for shaping grinding wheels - Google Patents

Description

The invention relates to the manufacture of an abrasive tool and metal processing industry and can be used, for example, in the manufacture of grinding wheels with a diameter of 50-100 mm with a height of 20-150 mm.

A device for pressing powdery materials, p, consisting of a cylindrical Mgr, press plate, installed with the possibility of translational movement relative to the matrix of a vibrator and driving a rotation of the pressing plate, which is made in the form of a j spiral.

This device allows to obtain products with increased density when pressing a homogeneous powder. In the case of pressing a grinding mixture containing components with different specific weights, the mixture separates by fractdies on a vibrating plate, as a result of which the structure of the grinding wheel is disrupted which is unacceptable

The closest technical

The essence and the achieved result to the invention is a device for forming a mold containing molds; on the rotating table, a mixture hopper, a regulating gate with a pressing plate and a vibrator for imparting vibrations to the punch Zj.

A disadvantage of the known device is the impossibility of regulating the 1-g of uniform feed of the mixture to be pressed under the pressure plate, especially when forming small circles of small size, which leads to:

The aim of the inventions: is the improvement of the quality of products and the expansion of technological capabilities;: mill: si ki.

Delivered is achieved by the fact that in the installation of pre-shaping KCI-efovalnyh circles, containing a frame with a rotary table on which the mold S is fixed, a working argan, an exciter for the forming body and an ejector of the molded products, the working body BbinojraeH in the form d: vuh puaisonov, imec cich in the transverse section of the semicircle., and at least kgre, one of the punches has a cut

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20

25

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height and forms with the second channel for feeding the molding mixture, while the exciter with its movable part is connected to one of the punches, and the casing is f. second punch.

FIG. presented installation, general view; in fig. 2 - attachment of the working organ nibrovozbitel; Fig, 3 - the working body, the cross section.

YcTaiiOBKa. For forming the grinding wheels contains a frame 1 with a frame installed on it and directed to the qimi columns 2, which serve to guide the movement of the cross bar 3. On the frame 1 there is a rotation of the table 4 with a fixed mold 5 on it. The table rotates The drive 6, and for ejection of the formed blanks, a hydraulic cylinder 7 is mounted, pivotally connected to the pusher 8 connected to the lower molding plate of the mold 5. The working body is made in the form of two p- / Anson 9 and 10, having in cross-section a semicole ca, and the punch 10 has a cut P in height, which forms a channel 12 for the passage of the op sym of the mixture under the punch 9. The lower part 3 of the working organ is out; full of removable, while pressing the top of the punch 9 is bevelled with respect to the surface of the molding - pickty mold 5 at an angle of 2-3 from the entry side of the forged mixture. On the traverse 3, the installation is as follows: a vibration exciter 4 with springs IS, the movable part of which is connected to the gun 9 by means of frame 16. The housing of exciter 14 by means of frame 17 is connected to the punch of S. Poins-1Sh 9 and 10 installed with a gap, weaving contact, In channel 2, an IS receiving funnel is installed, which is attached to the punch 9 so 5 to prevent contact with the punch 10, Traverse 3 is connected by cables 19 to the counterweight 20, and cables 19 are thrown over blocks 2. - installed on pai-ie 22. For padding, the traverse 3 is still hydrolyzed. p 2 3. By receiving funnel 5 August summed hopper 24. Dp ate otfor- McsBaHHbsx circles is provided a removable kick 25. Predpagaemak structure kreplenik vibrovozbudit & n I4 and ny ang.onoz 9 and 10 permits an increase in

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frequency of impacts of the system on the compacted layer of the molding mixture twice.

Installation for forming grinding wheels works as follows.

Depending on the desired characteristic of the molded product, the weight of the counterweight is set, with the aim of providing the static pressure of the crosspiece 3 on the compacted mixture in the range of 0.01-0.05 MPa. The hydraulic cylinder 23 of the yoke 3 is lowered to the lower position until the lower surface of the punches 9 and 10 touches the molding plate of the mold 5. The drive 6 rotates the table 4. The vibratory exciter 14 turns on. The hopper 24 and the receiving funnel 18 receive a mold, which The channel 12 between the punches 9 and iO is fed by an even layer under the punch 9 and the process of forming the grinding wheel begins with the mass compacted by asynchronous blows to it with both punch

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As the height of the formable circle grows, the movable yoke 3 rises, and the punches compact the subsequent layers of the formable article. When the desired height of the product is reached, the mixture is stopped, and the vibrating punches 9 and 10 nurture the surface of the product in a rotating mold 5 for a certain time. With the end of the nursing time, the exciter 14 and the table rotation drive B 4 turn off. Traverse 3 hydraulic cylinder -, the rum 23 rises to the upper position, and the billet of the hydraulic cylinder jpoM 7 is pushed out of the mold 5. The circle billet by the rotary puller 25 is removed from the molding speci-foop plate JI 5. The traverse 3 is lowered to the lower position and the cycle f rmovani repeated.

The present invention will be able to find the widest application in the production of grinding wheels and other products of round formulas of bulk mixtures with obtaining improved physical and mechanical characteristics.

Fig.Z

Editor V.Ivanova

Compiled by E. Selivanov Tehred M. Khodanych

Order 4575/19 Circulation 555 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader L. Pilipenko

Claims (1)

INSTALLATION FOR FORMING GRINDING CIRCLES, containing a bed with a rotating foot, on which a mold, a working body, a vibration exciter of the working body, a hopper for the molding mixture and an ejector of molded products, characterized in that, in order to improve the quality of products and expanding the technological capabilities of the installation, the working body is made in the form of two punches having a half-ring in cross section, and at least one of the punches has a height cut and forms a channel for chi moldable mixture, wherein the vibration exciter its movable part is connected with one of the punches and the housing - with another punch.