CN215199076U

CN215199076U - Adjusting device for crankshaft correction die of press

Info

Publication number: CN215199076U
Application number: CN202121318672.9U
Authority: CN
Inventors: 韩晓光; 侯东波; 许斌; 杜超; 吴丽萍; 李春阳
Original assignee: Liaoning 518 Internal Combustion Engine Fittings Co ltd
Current assignee: Liaoning 518 Internal Combustion Engine Fittings Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-12-17
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses an adjusting device of a crankshaft correcting die of a press machine, wherein one side of the mounting surfaces of a correcting upper die and a correcting lower die is provided with a first inclined surface, and the other side is provided with a straight surface; the upper die base and the lower die base are both provided with grooves, the pressing block is arranged in the grooves, one end of the special-shaped wedge block is pressed on the pressing block, and the other end of the special-shaped wedge block is pressed on the first inclined plane; the pressing plate is pressed on the straight surface and fixed through bolts. The pressing block is provided with a spherical groove, one end of the special-shaped wedge block is a spherical surface, and the spherical surface is embedded into the spherical groove; the other end of the special-shaped wedge block is provided with a second inclined surface, and the second inclined surface is abutted to the first inclined surface. The utility model has the advantages that: the symmetrical profile of the transverse cavity of the crankshaft correction die is ensured, and the complete contact between the shaft neck of the crankshaft hot forging piece and the profile of the crank arm cavity is realized after the upper die and the lower die are completely closed, so that the hot forging piece is ensured to reset and shape in the cavity, and the straightness of the forged piece meets the subsequent processing requirements.

Description

Adjusting device for crankshaft correction die of press

Technical Field

The utility model relates to the field of machinary, specifically a mould, more specifically say a correction mould and application method.

Background

The large hot die forging press production line with higher automation degree is very suitable for producing crankshaft forgings with smaller machining allowance, smaller die forging inclination and higher dimensional accuracy due to higher guide accuracy and the ejection mechanism. The influence of the straightness of the crankshaft forge piece on the initial balance of a crankshaft finished product is large, so that hot shaping is carried out in a correction procedure after die forging forming, an oil press is generally adopted as correction equipment from the perspective of environmental protection and energy conservation, and a correction die used for shaping needs to be transversely installed on a correction die holder which is fixed on a working table top. The installation of the correction die needs to consider longitudinal and transverse fixation, and because the profile of a cavity of the correction die is relative to the hot forging piece, a gap is reserved in the longitudinal direction and no gap is reserved in the transverse direction, the upper and lower correction dies need to be installed in an aligned and matched mode, the symmetry of the profile of the cavity of the correction die, particularly the profile of a shaft neck is ensured, so that a high-temperature forging blank is placed into the cavity to reset and reshape along with the closing of the cavity of the correction die, and the straightness of a crankshaft is ensured to reach the index specified by the drawing of the forging piece. The traditional correction die adopts a positioning key and a groove for longitudinal positioning in a die holder, a wedge block and a bolt for fixing transverse positioning, the side wall of the die holder is directly extruded by the wedge block, the stability and the durability are poor, and fatigue cracks are generated on the side wall of the die holder and cannot be used finally along with the increase of the using time; meanwhile, there is a problem that the mold cannot be adjusted in the lateral direction.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide an adjusting device of a crankshaft correction die of a press machine, which comprises an upper die base, a lower die base and a correction upper die, wherein the correction upper die is arranged in the upper die base, and the correction lower die is arranged in the lower die base; the method is characterized in that: a first inclined plane is arranged on one side of the mounting surfaces of the correcting upper die and the correcting lower die, and a straight plane is arranged on the other side of the mounting surfaces of the correcting upper die and the correcting lower die;

the upper die base and the lower die base are both provided with grooves, the pressing block is arranged in the grooves, one end of the special-shaped wedge block is pressed on the pressing block, and the other end of the special-shaped wedge block is pressed on the first inclined plane; the pressing plate is pressed on the straight surface and fixed through bolts.

The pressing block is provided with a spherical groove, one end of the special-shaped wedge block is a spherical surface, and the spherical surface is embedded into the spherical groove; the other end of the special-shaped wedge block is provided with a second inclined surface, and the second inclined surface is abutted to the first inclined surface.

The pressing block is fixed at the bottom of the groove through a screw.

The upper die base and the lower die base are both provided with bosses, and nuts are fixed at the lower ends of the bosses.

The utility model has the advantages that:

the self-locking adjusting structure fixed by the correcting die is adopted, the transverse cavity profile symmetry of the crankshaft correcting die is ensured, and the complete contact of the shaft neck of the crankshaft hot forging piece and the profile of the crank arm cavity is realized after the upper and lower correcting dies are completely closed, so that the resetting and shaping of the hot forging piece in the cavity are ensured, and the straightness after forging and the like meet the subsequent processing requirements.

Through the self-locking and adjusting structure, the problem of forge piece interference caused by asymmetry of the corrected mould cavity profile is avoided, and the stability of efficient correction is ensured; the service life of the correction die holder is prolonged through the self-locking and adjusting structure; through auto-lock, adjustment structure, the dislocation of quick adjustment correction mould shortens mould adjustment man-hour, improves production efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an upper calibration mold and a lower calibration mold;

FIG. 3 is a schematic structural diagram of a briquette;

fig. 4 is a structural schematic diagram of the profiled wedge.

Detailed Description

The present invention is specifically described below with reference to the accompanying drawings, and as shown in the drawings, the present invention comprises an upper die base 6, a lower die base 10, and a correction upper die 5 arranged in the upper die base 6, and a correction lower die 4 arranged in the lower die base 10; a first inclined plane is arranged on one side of the mounting surfaces (the left side and the right side of the upper correcting die and the lower correcting die in fig. 2) of the upper correcting die 5 and the lower correcting die 4, wherein the first inclined plane is respectively an inclined plane 51 on the upper correcting die and an inclined plane 41 on the lower correcting die, and the straight plane is arranged on the other side of the mounting surfaces and is respectively a straight plane 52 on the upper correcting die and a straight plane 42 on the lower correcting die;

the upper die base and the lower die base are both provided with grooves 12, the pressing block 2 is arranged in the grooves 12, one end of the special-shaped wedge block 3 is pressed on the pressing block 2, the other end of the special-shaped wedge block is pressed on the first inclined plane, and the special-shaped wedge block 3 is fixed on the upper die base and the lower die base through T-shaped bolts 1; the pressing plate 8 is pressed on the straight surface and fixed through bolts.

The pressing block 2 is provided with a spherical groove 21, one end of the special-shaped wedge block 3 is a spherical surface 31, and the spherical surface 31 is embedded into the spherical groove 21; the other end of the profiled wedge is provided with a second inclined surface 32 which abuts against an inclined surface 51 on the upper correcting die and an inclined surface 41 on the lower correcting die. Because the pressing block 2 is arranged, the spherical groove 21 of the pressing block 2 corresponds to the spherical surface 31 of the special-shaped wedge block, when the second inclined surface is pressed against the inclined surface 51 on the upper correcting die and the inclined surface 41 on the lower correcting die, the position change of the second inclined surface 32 can be adapted through the rotation of the spherical surface 31 in the spherical groove 21, so that the transverse position of the lower die holder relative to the upper die holder is ensured to be unchanged, a self-locking structure of the transverse position is formed (namely the relative transverse position of the upper die holder and the lower die holder cannot be changed), and the upper die holder and the lower die holder are pressed by the rotation of the special-shaped wedge block 3, so that the fatigue crack of the upper die holder and the lower die holder caused by the extrusion due to the similar wedge block structure cannot be caused.

The pressing block 2 is fixed at the bottom of the groove 12 through a screw.

The upper die base and the lower die base are both provided with bosses 11, nuts 9 are fixed at the lower ends of the bosses, and the pressing plate 8 is arranged on the bosses 11 and the upper parts of the straight surfaces in a cross mode.

The utility model discloses a use method is: after the positions of the upper die holder and the lower die holder are fixed, the relative transverse positions of the upper die holder and the lower die holder are not changed any more, and then the position of the upper die is fixedly corrected; and then, the position of the lower correcting die relative to the upper correcting die is adjusted by adjusting the T-shaped bolt 1 by taking the position of the upper correcting die as a reference, and the lower correcting die is aligned according to the reference surface, so that the position of the lower die holder is not required to be changed in the adjusting process.

Claims

1. An adjusting device of a crankshaft correcting die of a press comprises an upper die holder, a lower die holder, a correcting upper die arranged in the upper die holder, and a correcting lower die arranged in the lower die holder; the method is characterized in that: a first inclined plane is arranged on one side of the mounting surfaces of the correcting upper die and the correcting lower die, and a straight plane is arranged on the other side of the mounting surfaces of the correcting upper die and the correcting lower die;

the upper die base and the lower die base are both provided with grooves, the pressing block is arranged in the grooves, one end of the special-shaped wedge block is pressed on the pressing block, and the other end of the special-shaped wedge block is pressed on the first inclined plane; the pressing plate is pressed on the straight surface and is fixed on the upper die base and the lower die base through bolts;

2. The adjustment device for the calibration jig of the press crankshaft as set forth in claim 1, wherein: the pressing block is fixed at the bottom of the groove through a screw.

3. The adjustment device for the calibration jig of the press crankshaft as set forth in claim 1, wherein: the upper die base and the lower die base are both provided with bosses, nuts are fixed at the lower ends of the bosses, and the pressing plate cross arm is arranged on the bosses and the upper parts of the straight surfaces.