SU1235740A1 - Device for fixing blanks of superhard materials in case of mechanical working - Google Patents

Description

The invention relates to the machining of hard and brittle materials, namely, devices for securing superhard material blanks during machining.

The purpose of the invention is to improve the accuracy and reliability of fixing blanks.

FIG. 1 shows a device, a longitudinal section; in fig. 2 - the same horizontal cut.

A device for securing superhard material blanks during machining contains a box-shaped body I, a plate 2 with through holes 3-8 installed in the body 1, a heater 9 located under the body 1, and a fixing alloy 10 embedded in the bottom of the body 1.

On the body 1, a punch 11 with an elastic element 12 is mounted for vertical movement. The material of the element 12 is hard rubber or a synthetic elastomer.

In the bottom of the housing 1 there are interconnected channels 13-17, located under the openings 3-8 of the plate 2, and an opening 18 for communicating the channels with the atmosphere.

The height of the walls of the housing 1 exceeds the thickness of the plate 2. Along the contour of the walls of the housing 1, a wedge-shaped juice 19 is made to ensure the tightness of the housing.

Fusible materials are chosen as the fixing alloy, the melting point of which is lower than the heat resistance of the material of the elastic material of the element 12 of the punch 11.

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The device works as follows.

In the holes 3-8 plate 2 set the workpiece 20-25 superhard materials. A heater 9 is turned on to melt the locking alloy 10.

Vertical movement of the punch 11 with the elastic element 12 is fixed billet 20-25. Upon further movement of the punch 11, the wedge-shaped ska 19 is pressed into the elastic element 12, in this case the housing 1 is sealed and an overpressure is created on the fixing liquid alloy 10, which is injected into the gaps (3 mm) between the blanks 20-25 and the holes 3- 8, as well as communicating between the channels 13-17 and the opening 18.

The locking alloy 10 provides the same pressure on each billet. When cooling the blanks and the alloy under pressure fixing alloy

10 becomes solid and fixes blanks 20-25. Remove the punch

11 with an elastic element 12, and the body 1 with blanks is supplied for machining, for example grinding.

After processing, the workpiece 20-25 is removed after heating the housing 1 to the melting temperature of the fixing alloy 10.

The proposed device provides reliable attachment of the workpieces and good heat removal from the grinding zone, which reduces the likelihood of thermal deformations of the workpieces and improves the processing performance.

Figg

SoSiteIl. V. Xo. ionoii

Editor N. BobkovaTehred I. VeresKorrektor M.Maksimnshinshynets

Order 2971/15 Circulation 555Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

DEVICE FOR FASTENING WORKS OF SUPER-SOLID MA- MECHANICAL PROCESSING TERIALS, comprising a box-shaped body, a plate with through holes installed in the body, a heater located under the body, and a fixing alloy cast on the bottom of the body, characterized in that, with the aim of increasing the accuracy and reliability of fastening the workpieces, it is equipped with a punch with an elastic element mounted with the possibility of vertical movement relative to the housing, in the bottom of which there are made interconnected channels located under the holes of the plate, and an opening for bscheniya channels with the atmosphere, wherein the shell wall height greater than the thickness of the plate. FIG. /