FIELD: oil and gas industry.
SUBSTANCE: invention can be used in the oil-field industry. The unit for moulding of the tool for well drilling contains the mould 210 and the insert 224 connected to the mould. The mould includes the internal surface 212 forming the cavity 214 of the mould, and one or several elements 222 for formation of the lateral recesses in a casting corresponding to tool nozzles. The element 222 has a top edge. The insert 224 has the top section 225, the bottom section 227 and the bottom edge 229 connecting to the upper edge 213 of the element 222. The section of bottom edge which connects to the top edge section, is interconnected with it by the shape that provides positioning of the workpiece in the cavity with high precision.
EFFECT: positioning of a workpiece in a cavity with high precision.
24 cl, 8 dwg
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