RU2278767C1 - Die set for multiple-seat cutting of rolled piece - Google Patents

Abstract

FIELD: plastic working of metals, namely cutting rolled piece by means of shears by several blanks for one stroke.

SUBSTANCE: die set includes lower plate mounted on table of press and having lower cutters, clamp and stop; upper plate with upper cutters. Cutters are secured to plates by means of cutter holders. In order to clamp rolled piece, die set is provided with frame mounted in cutter holder of lower cutters with possibility of motion parallel to rolled piece axis and having cavity with inner inclined faces. Clamp has cavity and lateral protrusions in which supporting inclined faces are formed for engaging with inner inclined faces of frame cavity. Clamp is mounted with possibility of relative motion normal and parallel to direction of feeding rolled piece. First lower cutter at side of feeding rolled piece is mounted with possibility of translation motion normal to rolled piece axis in cavity of clamp and it has inclined face. First cutter is mounted with possibility of engaging of its end planes with cutter holder. Stop is mounted in frame.

EFFECT: lowered quantity of residues, reduced effort necessary for operation.

1 dwg

Description

The invention relates to the processing of metals by pressure and can be used for cutting rolled products into billets, in particular for multi-support cutting - cutting in one stroke with several knives into several billets [1].

A device for dividing rods into measuring billets is known, comprising a lower plate mounted on a press table with lower knives, a clamp and an emphasis, an upper plate connected with a press slider with upper knives, the last of which, installed on the supply side of the bar, has a height greater than the height of the other upper knives [2].

In the known device, the axial compression of the cut billets is provided as a result of preliminary cutting of the steel with an extreme knife with the formation of waste. In this case, an additional force is required for the transverse clamping of the rental.

The invention is directed to reducing waste and effort required to complete an operation.

This is achieved by the fact that the stamp contains a bottom plate mounted on the press table with lower knives, a clamp and an emphasis, an upper plate with upper knives, knives are fixed to the plates by means of knife holders, for clamping the rolled stamp is equipped with a frame mounted in the knife holder of the lower knives with the possibility of moving in parallel rolled axis and made with a cavity having internal inclined planes, the clamp is made with a cavity and side protrusions, on which are made supporting inclined planes in contact with the internal inclination the planes of the cavity of the frame, while the clamp has the possibility of relative movement perpendicularly and parallel to the direction of supply of the rental, the first of the lower knives on the supply side of the rental is installed with the possibility of translational movement perpendicular to the axis of the rental in the cavity of the clip and has an inclined contact plane with it, while the first the lower knife is installed with the possibility of contacting the end planes with the knife holder, and the emphasis is placed in the frame.

The drawing shows a stamp at the initial moment of the segments. The stamp contains a lower plate 1 mounted on the press table with guide columns (not shown), on which the upper plate 2 is connected and spring-loaded with the press slider connected to the press slider. The upper knives 3 are fixed to the upper plate by means of a knife holder, wedges and spacers the lower plate 1 by means of a knife holder 4, wedges and spacers fixed lower knives 5. The upper knives are located in the spaces between the lower knives. A frame 6 with a stop 7 is installed in the knife holder 4 with the possibility of translational movement in the supply direction of the rental 7. On the inner inclined planes of the frame with the possibility of relative translational movement in the plane perpendicular to the cut plane, a clamp 8 is installed, which contacts the frame 6 with the support inclined planes made on the side protrusions and lateral planes with a knife holder 4. In the press cavity 8, on the inclined plane, the first lower knife 9 from the supply side of the rental is installed with the possibility of ceiling elements translational movement in a plane perpendicular to the cutting plane, with the contacting face planes knife carrier 4 for relative translational movement parallel to the cutting plane.

At the beginning of the segments, the hire is fed into the openings of the knives and the clamp until it stops 7 and moves the frame 6 in the feed direction. The movement of the frame 6 leads to the movement of the clamp 8 in the direction of supply of the rental, which leads to the movement of the lower knife 9 perpendicular to the direction of supply to the stop in the rental, and perpendicular to the direction of supply of rolled to the stop in the rental. Then, the movement of the upper half of the stamp leads to the cutting of the workpieces by the upper knives 3 and lower knives 5 with a transverse clamp of rolling the lower knife 9 and the clamp 8 with a force proportional to the force of the cut perceived by the lower knife 9, and with axial support of the workpiece closest to the end of the rolled product, proportional to the force of the segments perceived by the lower knife 9. In this case, the efforts of the transverse clamp and axial support are not transmitted to the slider of the press.

At the end of the segments, the upper half of the stamp returns to its original position, the frame 6, the clamp 8 and the lower knife 9 under the action of return springs (not shown) also return to their original position, limited by stops (not shown).

Information sources

1.S.S.Solovtsov. Non-waste cutting of long products in stamps. - M.: Mechanical Engineering, 1985, p. 105.

2. SU 1424992 A1, B 23 D 23/00. Device for dividing rods into measured billets.

Claims (1)

A stamp for multi-support cutting of rolled products, comprising a lower plate mounted on the press table with lower knives, a clamp and an emphasis, an upper plate with upper knives, characterized in that the knives are fixed to the plates by means of knife holders; for clamping the rolled metal, the stamp is equipped with a frame installed in the knife holder of the lower knives with the possibility of moving parallel to the axis of the rental and made with a cavity having internal inclined planes, the clamp is made with a cavity and side protrusions on which the supporting inclined planes are made, con operating with internal inclined planes of the cavity of the frame, while the clamp has the possibility of relative movement perpendicularly and parallel to the direction of supply of the rental, the first of the lower knives on the supply side of the rental is installed with the possibility of translational movement perpendicular to the axis of the rental in the clamp cavity and has an inclined contact plane with it, this first lower knife is installed with the possibility of contacting the end planes with the knife holder, and the emphasis is placed in the frame.