SU1342619A1 - Arrangement for working holes in thin sheets - Google Patents

Abstract

The invention relates to metal working, in particular, to devices for processing holes in thin sheets. The aim of the invention is to increase the processing efficiency. The tool 3 after processing the hole 16 in the sheet 2 enters the hole 7 of the cup 5. Air blows through the channel 8 tool 3. Coolant lubricant (coolant) from the cavity 13 along the slit 12, directed from the bottom 6, falling on the tool 3, completes it cooling and cleaning. The size of the slit 12 is controlled by moving the tube 9 relative to the cup 5. During the return stroke, the compressed air blows off the excess coolant from the tool 3. 1 sludge. § (L SO (S 05

Description

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The invention relates to metal processing, namely, devices for machining holes in thin sheets,

The purpose of the invention is to increase the processing efficiency.

The drawing shows a general scheme of the device.

The device includes a support 1 for the sheets to be processed 2 and a tool head (not shown) with tool 3 coaxially mounted on both sides of it and a gland foot 4 and a coolant supply unit (LCL), made in the form of a cup 5, in the bottom 6 which has an axial hole 7 and radial channels 8 associated with the hole 7 and the compressed air supply system (not shown), and the pipe 9 with a conical end surface 10. In this case, the cup 5 surrounds the tube 9, on the bottom 6 of the cup 5 made the annular protrusion 11 of the triangular section, and between the surface 10 of the pipe 9 and the protrusion 11 is formed of an annular conical slit 12 width b with apex a directed in the direction opposite to the bottom 6 of the glass 5 to the side. The cavity 13 between the pipe 9 and the glass 5 is sealed by a seal 14 and is connected to a coolant supply system (not shown) through the pipe 15.

The device works as follows.

Tool 3 (tap, reamer, etc.) processes hole 16 in lifts 2. At that, sheet 2 is pressed to support 1 with legs 4. Falling into hole 7 of cup 5, tool 3 is blown with compressed air through channel 8,

Compiled by V. Rotnitska Editor E. Papp Tehred M. Khodanych Proofreader A. Tsko

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VNIIPI USSR State Committee

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

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

192

which cools tool 3 and blows off chips. The coolant from the cavity 13 through the slit 12 enters the pipe 9 by washing off the remaining chips from tool 3, cooling it and applying coolant to the tool to feed it to the cutting zone. Since the top and the slit 12 is directed from the bottom 6, the coolant can not get into the hole 7. During the reverse course of the tool 3 squeeze the air blows off excess coolant from it. The size of the slit 12 is governed by the axial movement of the pipe 9 relative to the glass 5.

Claims (1)

Invention Formula A device for processing holes in thin sheets containing a support for the sheet being processed and a tool head and a coolant supply unit (LCL) coaxially mounted on either side, characterized in that, in order to increase the processing efficiency, the coolant supply unit is designed as pipes with a conical end surface and a cup enclosing it, in the bottom of which there is an axial hole for the passage of the tool and radial channels associated with the aforementioned hole 1 and with the syst A compressed air supply is provided; an annular protrusion of triangular cross section is made on the inner surface of the glass bottom, and an annular conical slit is formed between the end surface of the pipe and the protrusion, the apex of which is directed opposite to the glass bottom.