SU1368096A1 - Tool unit to the die for machining sheet material - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used for lubrication in dies when processing sheet material. The purpose of the invention is to reduce the consumption of lubricant and the expansion of technological capabilities. The stamp can be set to. high-speed equipment due to the inertia of the lubricant supply. When the protrusion 14 interacts with the material being processed, the spool 13, moving upwards, closes the opening 10 of the membrane 9, the compartment has a volume of lubricant between it and the spool 13. With the latter moving further, the membrane 9 deforms and compresses the specified amount of lubricant, which when the holes are aligned 16 and 18 are fed under pressure to the lubrication zone. 3 il. and S with | p "g /

Description

The invention relates to the processing of metals by pressure and can be used for lubrication in dies when processing sheet material.

The purpose of the invention is to reduce the consumption of lubricant and expand the technological capabilities of the tool assembly to the die for processing sheet material.

FIG. 1 shows a tool assembly for a die for processing sheet material J in FIG. 2, the same at the time the spool separates a dose of lubricant; in fig 3

the same, after the completion of the delivery of a dose of lubricant.

The tool assembly contains a plate 1 with a punch 2 installed therein. A plate 4 with a cavity 5 is attached to the plate 1 by means of bolts 3 to accommodate a lubricant. Compressed air exerts pressure on the lubricant through a nozzle 6 located in chamber 7 of chamber 7. In punch 2 there is a through axial bore 8, in the upper part of which there is an elastic membrane 9 with an axial bore 10, bp1; and c in support ring 11 fixed by retaining ring 12. The lower part of the membrane 9 is made conical or close to it. In the lower part of the hole 8 of the punch is mounted with the possibility of axial movement of the spool 13 with the protrusion 14, In the spool 13 there are intersecting holes 15 and 16, necessary for supplying the lubricant to the lubrication zone through the annular groove 17 and through radial holes 18, made in the walls of the punch 2, the holes of the spacing are laid from the end of the protrusion 14 at a distance equal to the distance from the KOJjb groove, 17 to the end of the punch 2,

Tool node to the stamp works as follows.

Before starting iI work, the lubricant under the action of compressed air (or by gravity) from chamber 4 enters through the hole in the ring 12 and the hole 10 in the membrane 9 through the gap S into the cavity. When the punch 2 moves with the plate 1 down and the protrusion 14 interacts with the material being processed (not shown), the spool 13, moving up, overlaps the opening 10 of the membrane 9 (FIG. 2) from below, thus forming

a closed compression chamber K ,, whose height h is equal to the height h of the not yet recessed part of the protrusion 14, and the volume of the compression chamber K corresponds to the volume of lubricant required for this stamping process.

Upon further movement of the spool 13, the lubricant is compressed. The radial holes 16 are aligned with the ring groove 17, and as the radial holes move through the ring groove (respectively, h ,,), the process is going on.

supply of lubricant to the metal processing area under pressure. When fully engaging the protrusion 14, the supply of lubricant is stopped (FIG. 3) -

After the punching operation is performed under the action of elastic compressive forces of the elastic membrane 9 and the pressure of the lubricant, the spool 13 returns to its original position. At the same time, at the moment of depressing the spool 13 by the membrane 9 in the forming chamber, a discharge is created, under the action of which the lubricant remaining in the openings 15–16 and 18 and in the groove 17 is held or sucked back into the chamber –– membrane 9, the radial holes 16 pass through the annular groove 17, which completely eliminates the loss of lubricant. When the spool 13 returns to its initial position under the action of the membrane 9 by means of the protrusion 14, the part is removed or removed from the punch 2. Thereafter, the punching cycle is repeated.

Claims (1)

Invention Formula Tooling punch for sheet material processing containing a lubricant chamber and a punch with an axial bore, an annular groove and through-holes in the walls communicating with the lubricant bladder by means of a spool that is axially displaced in the axial punch hole, characterized by that. what with the purpose reducing the consumption of lubricant 1 material and expanding technological capabilities; the punch is provided with a fixedly mounted-in the upper part of the axial, opening with an elastic membrane. and the part of the membrane on the side of the spool is conical in shape with the ability to interact with the end surface of the spool, while the ash tray is made with a diametrical opening and channels connecting the diametrical opening with the peripheral part of the end surface of the spool facing the diaphragm . FIG. 2 eleven Fi5.3