SU1253744A2 - Arrangement for deep drilling - Google Patents

Description

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112

This invention relates to metalworking and can be used for drilling deep holes.

The aim of the invention is to increase productivity by creating a pulsating flow of cutting fluid (LCL) and an oscillating tool feed.

FIG. 1 is a schematic of the tTBaJ device in FIG. 2 shows section A-A in FIG.

The device contains a drilling head 1 with a cutting blade 2 with a diameter d, a stem 3 with a channel 4 for draining coolant and chips, covering the stem 3 a sleeve 5 with grooves 6 on its outer surface 7 and an oil receiver 8. On-body 3 is fixedly connected with a stem 3 washer 9 with grooves 10, similar to grooves 6, placed at an angle to the axis of the a-q device. The diameter d of the cutting blade 2 and the head 1 is equal to the diameter dj of the washer 9 n of the surface 7 of the sleeve 5, 1 that ensures the free rotation of the sleeve 5 in the cavity 11 of the workpiece 12.

3

The device works as follows.

Coolant when drilling comes from the oil receiver 8 in the cavity 11 and along the grooves 6 and 10 to the cutting blade 2, from which coolant with chips is discharged through channel 4.

Simultaneously with this coolant, the flow through the grooves 6 of the sleeve 5 rotates it relative to the stem 3. At this time, the grooves 10 overlap. The overlap of the grooves 10 provides a pulsation of coolant in the cutting zone and a change in axial force on the cutting blade 2, which speeds up the drilling and facilitates the drilling and removal of chips.

The application of the proposed device allows to increase the productivity of drilling due to grinding - chips with a pulse effect on the workpiece of the tool and the flow of coolant to the chips, its easy removal and acceleration of the cutting process.

AND

Editor T. Parfenova

Compiled by V. Rotnitska

Tehred M. Khodanich Proofreader M. Samborska

Order 4666/16 Circulation 1001

VNIIPI USSR State Committee

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

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

2

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Claims (1)

DEVICE FOR DEEP DRILLING by ed. No. 496106, characterized by the fact that, in order to increase productivity, it is equipped with a sleeve covering the stem with inclined grooves located on its outer surface and similar grooves on the ste-D fucking washer, while the outer diameters of the sleeve, washer, and tool heads are equal. Figure 1 SU <„> 1253744 A 2