SU1217588A1 - Twist drill with internal passages for cutting fluid supply - Google Patents

Description

one

The invention relates to metalworking and can be used in tool manufacturing in the manufacture of drills with internal channels for coolant. The purpose of the invention is to expand the technological capabilities of using drills with internal coolant channels by supplying coolant from both the shank side and through the lateral cylindrical surface of the drill.

FIG. 1 shows a distribution sleeve, FIG. 2 - drill, longitudinal section in FIG. 3 shows section A-A in FIG. 2; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a section BB in FIG. 1 (turned). The distribution sleeve 1 is mounted on the cylindrical part of the drill 2 and provided with a side opening 3 for supplying coolant through the cartridge 4 (shown in phantom lines), a blind radial hole 5 connected to the inner spiral channels 6. A groove 7 connects the central hole in the shank 8 and the radial hole 9 with a radial hole 5 of the drill and internal channels 6. The protrusion of the V-ring O enters the first locking groove 1I on the drill and in this position175882

SRI of coolant through the cartridge gets only into the internal channels 6, and the radial hole 9 in the shank is blocked by a cylindrical section 12

5 bushings and drills (Fig. 1). In the second position of the distribution sleeve, the radial hole 9 connected to the central hole 8 in the shank is connected through the slot 7 of the sleeve to the radial hole 5 and the internal channels 6, and the side hole 3 is blocked by a cylindrical section 13 of the distribution sleeve (Fig. 2).

15 The drill works as follows.

The drill works like a normal drill with internal coolant channels and can be used

20 iJa vertical drilling machine with coolant through the side surface and on a turret lathe with coolant through the shank.

25 The proposed drill reduces the stock of drills in stock by about 30% by using the same drill design as with coolant through the side.

30 surface (rotating drills) and through the shank (fixed drills).

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Claims (1)

SPIRAL DRILL WITH INTERNAL CHANNELS FOR THE SUPPLY OF SOZH, containing a working part with internal spiral channels connected by a radial hole to the outer cylindrical surface of the drill, and a shank with a central hole, characterized in that, in order to expand technological capabilities, it is equipped with a distribution sleeve made with a through side hole, undercut in the form of a segment on the inner surface and locking tabs on the end surface, and on the end surface of the shank Facing the working part of the tool are formed corresponding latching grooves arranged perpendicular to each other, wherein on the cylindrical surface of the drill sleeve in the junction location area formed radial opening facing into the central hole of the shank.