Instrumental node for cutting off the desired contour of the cylindrical heads of rod parts on the cold machines

 

(57) Abstract:

The invention relates to the processing of metals by pressure, namely the cold instrument, and can be used in the manufacture of core products with different shapes of heads on cold machines. Instrumental node contains the punch cut with an axial hole and tile installed in contact with one of its ends with an end face of the punch. Tile has a coaxial hole punch hole and a recess located on the end face, remote from the punch. In deepening tiles placed the ring damper, interacting with the ejector. The ejector is made in the form of a rod with a pressed on one end of the sleeve and placed in the holes in the tile and punch. The damper consists of a stepped ring located in a recess in the tile, focusing his end of the larger outer diameter in the bottom of the grooves of the tiles, and additional rings. The latter abuts against the end face of the larger diameter of the stepped ring from its smaller diameter. The outer surface of the smaller diameter of the stepped ring and the inner surface of the additional ring formed free cavity. Depressiva is the result of the decreasing complexity of manufacturing instrumental node. 1 Il.

The invention relates to the processing of metals by pressure, namely the cold instrument, and can be used in the manufacture of rod parts with different shapes of heads on cold machines.

Famous instrumental node for cutting off the desired contour of the cylindrical heads of rod parts for cold vending machines with a punch cutting with an axial hole tile mounted in contact with one of its ends with an end face of the punch and made coaxially with the hole punch hole and a recess located on the edge of the tile that is remote from the plug, the o-ring damper placed in the above-mentioned recess tiles, and the ejector in the form of a rod with a head mounted in the holes in the tiles and punch interoperable head damper (Forging and stamping. The Handbook. Cold forging, so 3, Ed. by G. A. Navrotsky. - M.: Mashinostroenie, 1987, S. 53, 56, Fig. 18).

In the known instrumental node ejector rod ends often due to the fact that the damper is made in the form of washers, absorbs the kinetic energy of the ejector, is not able to increase Nar essential features is instrumental node for cutting off the desired contour of the cylindrical heads of rod parts produced on the cold heading machines, contains the punch cut with an axial hole tile mounted in contact with one of its ends with an end face of the punch and made coaxially with the hole punch hole and a recess located on the edge of the tile that is remote from the plug, the o-ring damper open cavity, placed in said recess tiles, and the ejector in the form of a rod with a pressed on one end of the sleeve, while the free space of the damper facing the ejector sleeve and the latter is installed in the holes in the tiles and punch interoperable sleeve with damper (EN 2101120 C1, 10.01.1998, B 21 J 5/12).

In the known instrumental node damper absorbs kinetic energy, but ethnologist in manufacturing, because has a deep narrow cavity, which requires a special tool, which greatly increases the complexity of manufacturing instrumental node.

The invention solves the problem of reducing the complexity of manufacturing instrumental node by creating technology in the manufacture of the damper, while preserving its ability well to absorb the kinetic energy of the ejector.

The problem is solved, however, cold machines, contains the punch cut with an axial hole tile mounted in contact with one of its ends with an end face of the punch and made coaxially with the hole punch hole and a recess located on the edge of the tile that is remote from the plug, the o-ring damper open cavity, placed in said recess tiles, and the ejector in the form of a rod with a pressed on one end of the sleeve, while the free space of the damper facing the ejector sleeve and the latter is installed in the holes in the tiles and punch interoperable sleeve with damper according to the invention the ring damper is made in the form of stepped rings, the established focusing their edge, located by a larger outer diameter, in the bottom of the grooves of the tiles, and additional rings placed with a focus in the end of larger diameter of the stepped ring from its smaller outer diameter, free cavity formed by the outer surface of the smaller diameter of the stepped ring and the inner surface of the additional ring and pressed sleeve mounted for engagement with the end face of the stepped ring from its smaller Naim diameter additional rings, makes it easy to absorb the kinetic energy of the ejector through the available degrees of freedom of the smaller outer diameter of the damper, and a stepped portion of the damper is easy to perform conventional lathe cutter, i.e. the design of the damper is adaptable to production.

The drawing shows the instrumental node for cutting off the desired contour of the cylindrical heads of rod parts on the cold machines.

Instrumental node for cutting off the desired contour of the cylindrical heads of rod parts on the cold machines contains the punch cut 1 with an axial hole, tile 2, installed in contact with one of its ends with an end face of the punch 1 and is made coaxially with the hole punch hole and a recess located on the edge of the tile 2, remote from the punch 1, the o-ring damper 3 and the ejector in the form of a rod 4 with a pressed on one end of the sleeve 5 mounted in the holes in the tiles 2 and punch 1 interoperable sleeve 5 with damper 3.

The damper 3 is made in the form of stepped rings, the entire damper 3 is placed in a hollow tile 2 so that its end face side polysegmental outer diameter rests against additional ring 6, inserted into the recess of the tiles 2, however, the smaller outer diameter of the damper 3 and the inner diameter of the additional ring 6 formed free cavity 7 facing the sleeve 5 of the ejector. The ejector sleeve 5 is installed with the possibility of interaction with the end face of the damper 3 by its smaller outer diameter.

Instrumental node works as follows.

When working stroke of the ejector his sleeve 5 hits on the working end of the smaller outer diameter of the damper 3, that is, decreasing the length and increasing the diameter at the same time, fills part of the free cavity 7 formed by the smaller outer diameter of the damper 3 and the inner diameter of the additional ring 6 mounted in a recess in the tile 2. Then under the action of the elastic properties of the damper 3, the ejector sleeve 5 together with the rod 4 is moved to the initial position, and the damper 3 returns to its original position.

The proposed instrumental node has a simple structure and low complexity of manufacturing.

The use of this tool node prevents premature damage to the ejector for cold-formed machine for MF the Institute.

Instrumental node for cutting off the desired contour of the cylindrical heads of rod parts for cold vending machines with punch cut with an axial hole tile mounted in contact with one of its ends with an end face of the punch and made coaxially with the hole punch hole and a recess located on the edge of the tile that is remote from the plug, the o-ring damper open cavity, placed in said recess tiles, and the ejector in the form of a rod with a pressed on one end of the sleeve, with free cavity damper converts to a sleeve ejector, and the latter is installed in the holes in the tiles and punch interoperable sleeve with damper, characterized in that the annular damper made in the form of a stepped ring set with an emphasis his butt, located by a larger outer diameter, in the bottom of the grooves of the tiles, and additional rings placed with a focus in the end of larger diameter of the stepped ring from its smaller outer diameter, free cavity formed by the outer surface of the smaller diameter of the stepped ring and the inner surface facilities is and by its smaller outer diameter.

 

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