CN217889414U - Friction block forging die - Google Patents

Abstract

The utility model provides a clutch blocks forges mould, include the lower bolster and be located the upper die plate directly over the lower bolster, the lower bolster upper surface interval is equipped with the preforging die cavity and forges the die cavity eventually about, preforging die cavity bottom is equipped with the arc constant head tank along length direction, forge the die cavity bottom surface eventually and be equipped with the friction surface that corresponds with two pits and a plurality of rectangular form arch of clutch blocks working face and forge concave-convex structure eventually, forge the die cavity outward flange outside at the end between lower bolster upper surface and the upper die plate lower surface and be equipped with deckle edge storehouse, through deckle edge bridge portion intercommunication between deckle edge storehouse and the forges the die cavity eventually. The utility model discloses to close forging die and finish forging die as an organic whole in advance, the preforging goes on simultaneously with the finish forging, has improved forging efficiency, and the blank has the location placing in the preforging die cavity after bending simultaneously, ensures that the preforging keeps even thickness, and the finish forging can guarantee to be full of to take shape, reduces the wearing and tearing of shaping power and reduction mould, prolongs the life of mould, reduction in production cost.

Description

Friction block forging die

Technical Field

The utility model belongs to the technical field of the automotive industry, concretely relates to clutch blocks forges mould.

Background

The friction block is also called steel backing, belongs to a part of a brake pad, and is used for an automobile disc brake. The friction block is of a flat plate structure, as shown in fig. 1 and 2, a main plane is basically rectangular, one long side is an outer convex arc-shaped side, the middle part of the other long side is a concave arc-shaped side, two bilaterally symmetrical pits 1 are designed on one side surface of the friction block, and a plurality of strip-shaped protrusions 2 are uniformly distributed in the pits 1. The friction block of this structure has the following problems during forging: because the thickness of the friction block forging piece is small, the conventional friction block forging die generally comprises a pre-forging die and a finish forging die, the pre-forging die and the finish forging die are respectively arranged on two hot forging presses, a positioning structure is not arranged in the pre-forging die, and a worker can shift frequently when placing a bent blank, so that the pre-forging piece is inconsistent, and the finish forging quality is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the weak point among the prior art, provide one kind can carry out simultaneously preforging and finish forging process, improve forging efficiency, guarantee the clutch blocks forging die of forging quality.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a rubbing block forges mould, include the lower bolster and be located the upper die plate directly over the lower bolster, the lower bolster upper surface interval about is equipped with the preforging die cavity and the die cavity of forging eventually, preforging die cavity bottom is equipped with the arc constant head tank along length direction, the die cavity bottom surface of forging eventually is equipped with two pits and the protruding friction surface that corresponds of a plurality of rectangular forms of rubbing block working face and forges concave-convex structure eventually, forge die cavity outward flange outside and be equipped with deckle edge storehouse at the end between lower bolster upper surface and the upper bolster lower surface, communicate through deckle edge bridge portion between deckle edge storehouse and the die cavity of forging eventually, the thickness and the width in deckle edge storehouse all are greater than deckle edge bridge portion's thickness and width.

The front sides of the upper surface of the lower template and the lower surface of the upper template are provided with a preforging jaw and a finish forging jaw, the rear end of the preforging jaw is connected with the front end of the preforging cavity, and the rear end of the finish forging jaw is communicated with the middle position of the front side of the rough edge bin.

Four vertical guide holes are formed in the position, on the rough edge bridge part, of the outer side of the friction surface finish forging concave-convex structure, of the lower template, the four vertical guide holes are arranged in a rectangular array, and each vertical guide hole is internally provided with an ejector rod.

The bottom profile of the cross section of the arc-shaped positioning groove is an arc line segment with the radius of 18mm, and the maximum depth of the arc-shaped positioning groove is 2mm.

The width of the rough edge bridge part is 8mm, and the thickness of the rough edge bridge part is 3mm; the width of deckle edge storehouse is 40mm, and the thickness is 10mm.

Adopt above-mentioned technical scheme, the utility model discloses forge the Q235 pole steel that the blank adopted phi 34mm, saw cut earlier, then heat the pole blank, the pole blank is bent by pressure after that, and the crooked radian of the blank after the bending keeps unanimous with the radian of the arc constant head tank of preforging the die cavity bottom. And (3) placing the bent blank into the pre-forging cavity, positioning the bent blank by the arc-shaped positioning groove to enable the blank placing position to be in the middle of the pre-forging cavity, and ensuring that the pre-forging part is uniformly filled with the pre-forging cavity after pre-forging. After the pre-forging, the pre-forging piece in the pre-forging cavity is clamped by a pre-forging jaw through a clamp and is immediately placed in a finish-forging cavity for a finish-forging process, after the finish-forging process is completed, an upper template is lifted upwards, four ejector rods jack up a friction block finish-forging piece upwards under the action of an air cylinder, burrs of the friction block finish-forging piece are clamped by the clamp through the finish-forging jaw, and the burrs are taken out from the cavity of a finish-forging lower die to complete the forging operation.

The utility model provides an cope match-plate pattern and lower bolster are all installed on 2500 tons of hot die forging presses, and the lower bolster installation is fixed on the workstation, and the slider bottom that reciprocates is fixed in the cope match-plate pattern installation. The pre-forging die comprises a pre-forging die cavity, a final forging die cavity, a lower template, a pre-forging die cavity, a final forging die cavity, a lower template and a lower template, wherein the pre-forging die cavity and the final forging die cavity are arranged in the pre-forging die cavity, the lower template is arranged in the final forging die cavity, and the pre-forging die cavity and the final forging die cavity are arranged in the lower template. In the finish forging process, unnecessary metal is passed through deckle edge bridge portion and is extruded to deckle edge storehouse in, deckle edge bridge portion width is reduced to 8mm by 15mm, has promoted the capacity in deckle edge storehouse like this, is guaranteeing that the final forging is full of under the circumstances of taking shape, can reduce final forming force and reduce the wearing and tearing of mould, prolongs the life of mould, reduction in production cost, with the overlap excision when the side cut process.

In the pre-forging and finish-forging processes, workers spray graphite emulsion to the pre-forging and finish-forging dies by using a spray gun, so that the temperature of the surfaces of the die cavities of the dies is reduced while the dies are lubricated.

To sum up, the utility model discloses to forge mould and finish forging mould in advance closes as an organic wholely, and the preforging goes on simultaneously with the finish forging, has improved forging efficiency, and the blank has the location placing in the preforging die cavity after bending simultaneously, ensures that the preforging keeps even thickness, and the finish forging can guarantee to be full of and take shape, reduces the wearing and tearing of forming force and reduction mould, the life of extension mould, reduction in production cost.

Drawings

FIG. 1 is a schematic front structural view of a friction block final forging;

FIG. 2 is a schematic view of the back structure of a friction block final forging;

fig. 3 is a schematic elevation structure of the present invention;

FIG. 4 is a top view of the lower platen of FIG. 3;

FIG. 5 is a cross-sectional view of the arcuate locating slot D-D of FIG. 4;

FIG. 6 is a schematic cross-sectional view at jaw B-B of FIG. 4;

figure 7 isbase:Sub>A schematic cross-sectional view of the flash cartridgebase:Sub>A-base:Sub>A of figure 4.

Detailed Description

As shown in fig. 3-7, the utility model discloses a clutch blocks forges mould, including lower bolster 4 and the cope match-plate pattern 3 that is located directly over the lower bolster 4, the interval is equipped with preforging die cavity 5 and finish forging die cavity 6 about the upper surface of lower bolster 4, preforging die cavity 5 bottom is equipped with arc positioning groove 7 along length direction, finish forging die cavity 6 bottom surface is equipped with the friction surface finish forging concave-convex structure 8 that corresponds with two pits 1 and a plurality of rectangular form arch 2 (shown in fig. 1) of clutch blocks working face, be equipped with deckle edge storehouse 9 at finish forging die cavity 6 outward flange outside between lower bolster 4 upper surface and the cope match-plate pattern 3 lower surface, communicate through deckle edge bridge portion 10 between deckle edge storehouse 9 and the finish forging die cavity 6, deckle edge storehouse 9's thickness and width all are greater than deckle edge bridge portion 10's thickness and width.

The front sides of the upper surface of the lower template 4 and the lower surface of the upper template 3 are provided with a preforging jaw 11 and a finish forging jaw 12, the rear end of the preforging jaw 11 is connected with the front end of the preforging cavity 5, and the rear end of the finish forging jaw 12 is communicated with the middle position of the front side of the burr bin 9.

Four vertical guide holes are formed in the lower template 4 at the positions of the rough edge bridge parts 10 on the outer side of the friction surface finish forging concave-convex structure 8, the four vertical guide holes are arranged in a rectangular array, and each vertical guide hole is internally provided with an ejector rod 13.

The bottom contour of the cross section of the arc-shaped positioning groove 7 is an arc line segment with the radius of 18mm, and the maximum depth of the arc-shaped positioning groove 7 is 2mm.

The width of the rough edge bridge part 10 is 8mm, and the thickness is 3mm; the width of the burr bin 9 is 40mm, and the thickness is 10mm.

The utility model discloses forge the Q235 pole steel that the blank adopted phi 34mm, saw cut earlier, then heat the pole blank, the pole blank is bent by pressure after that, and the crooked radian of the blank after bending keeps unanimous with the radian of the arc constant head tank 7 of 5 bottoms in the preforging die cavity. And (3) placing the bent blank into the pre-forging cavity 5, positioning the bent blank by the arc-shaped positioning groove 7 to enable the blank placing position to be positioned in the middle of the pre-forging cavity 5, and ensuring that the pre-forging piece is uniformly filled in the pre-forging cavity 5 after pre-forging. After the pre-forging, the pre-forging in the pre-forging cavity 5 is clamped by the pre-forging jaw 11 through a clamp and is immediately placed in the finish forging cavity 6 for the finish forging process, after the finish forging process is completed, the upper template 3 is lifted upwards, the four ejector rods 13 jack up the friction block finish forging upwards under the action of the air cylinder, burrs of the friction block finish forging are clamped by the finish forging jaw 12 through the clamp and are taken out from the cavity of the finish forging lower die, and the forging operation is completed.

The utility model provides an upper die plate 3 and lower bolster 4 all install on 2500 tons of hot die forging presses, and the installation of lower bolster 4 is fixed on the workstation, and the slider bottom that reciprocates is fixed in the installation of upper die plate 3. The blank after bending is placed in the pre-forging cavity 5, the pre-forging piece is placed in the finish forging cavity 6, the lower template 4 is forged and pressed downwards, and the pre-forging and finish forging processes can be carried out simultaneously, so that the forging efficiency is greatly improved. In the finish forging process, unnecessary metal is extruded to deckle edge storehouse 9 in through deckle edge bridge portion 10, and deckle edge bridge portion 10 width is reduced to 8mm by 15mm, has promoted deckle edge storehouse 9's capacity like this, is guaranteeing that the finish forging is full of under the circumstances of taking shape, can reduce final forming force and reduce the wearing and tearing of mould, the life of extension mould, reduction in production cost cuts off the overlap when the side cut process.

In the pre-forging and finish-forging processes, workers spray graphite emulsion to the pre-forging and finish-forging dies by using a spray gun, so that the temperature of the surfaces of the die cavities of the dies is reduced while the dies are lubricated.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

Claims (5)

1. The utility model provides a clutch blocks forges mould, includes the lower bolster and is located the cope match-plate pattern directly over the lower bolster, its characterized in that: the interval is equipped with the preforging die cavity and the die cavity of forging eventually about the lower bolster upper surface, preforging die cavity bottom is equipped with the arc constant head tank along length direction, the die cavity bottom surface of forging eventually is equipped with two pits and the protruding friction surface finish forging concave-convex structure that corresponds of a plurality of rectangular forms with the clutch blocks working face, be equipped with deckle edge storehouse at the die cavity outward flange outside of forging eventually between lower bolster upper surface and the cope match-plate pattern lower surface, deckle edge storehouse and finish forge through deckle edge bridge portion intercommunication between the die cavity, the thickness and the width in deckle edge storehouse all are greater than deckle edge bridge portion's thickness and width.

2. The die for forging the friction block as claimed in claim 1, wherein: the front sides of the upper surface of the lower template and the lower surface of the upper template are provided with a preforging jaw and a finish forging jaw, the rear end of the preforging jaw is connected with the front end of the preforging cavity, and the rear end of the finish forging jaw is communicated with the middle position of the front side of the rough edge bin.

3. The die for forging a friction block as recited in claim 1 or 2, wherein: four vertical guide holes are formed in the position, on the rough edge bridge part, of the outer side of the friction surface finish forging concave-convex structure, of the lower template, the four vertical guide holes are arranged in a rectangular array, and each vertical guide hole is internally provided with an ejector rod.

4. The die for forging a friction block as claimed in claim 1 or 2, wherein: the bottom profile of the cross section of the arc-shaped positioning groove is an arc line segment with the radius of 18mm, and the maximum depth of the arc-shaped positioning groove is 2mm.

5. The die for forging a friction block as recited in claim 1 or 2, wherein: the width of the rough edge bridge part is 8mm, and the thickness of the rough edge bridge part is 3mm; the width of deckle edge storehouse is 40mm, and the thickness is 10mm.

Images