CN111922203B - Stamping die structure for offsetting profile wave height points near ridge lines of stamping parts - Google Patents
Stamping die structure for offsetting profile wave height points near ridge lines of stamping parts Download PDFInfo
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- CN111922203B CN111922203B CN202010640392.3A CN202010640392A CN111922203B CN 111922203 B CN111922203 B CN 111922203B CN 202010640392 A CN202010640392 A CN 202010640392A CN 111922203 B CN111922203 B CN 111922203B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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Abstract
本发明涉及一种抵消冲压件棱线附近型面波浪高点的冲压模具结构；包括模具上模压料型面、模具下模凸模型面、下模型面调整块；下模凸模型面上设置下模型面调整块，在上模压料型面中对应下模型面调整块型面位置设置模具上模压料型面的空开型面，且反成型圆角型面同时空开，使得有冲压件棱线附近型面波浪高点的冲压件投入模具后，冲压件自动落入下模凸模型面理论位置A，通过上下模合模，实现对冲压件棱线外侧平面的下表面向上顶的工作过程；本发明有利于减少调试修改工作量，避免补焊修改引起的模具型面数据不合格，解决了冲压件棱线附近型面由于拉延成型聚料产生波浪、经过修边波浪分散、整形二次聚料恶化、产生的冲压件棱线附近型面波浪高点问题。
The invention relates to a stamping die structure for offsetting the high point of the profile surface near the edge line of the stamping part; it comprises an upper die pressing material profile, a die lower die convex model surface, and a lower model surface adjusting block; a lower die convex model surface is provided with a lower die The model surface adjustment block is set in the upper molding material surface corresponding to the lower model surface adjustment block surface position to set the open surface of the upper molding material surface of the mold, and the reverse molding fillet surface is opened at the same time, so that there are edges of the stamping parts. After the stamping part with the wave high point of the profile near the line is put into the mold, the stamping part automatically falls into the theoretical position A of the convex model surface of the lower die. The invention is beneficial to reduce the workload of debugging and modification, avoid unqualified mold profile data caused by repair welding modification, and solve the problem that the profile near the ridgeline of the stamping part produces waves due to the stretched polymer, and the waves are dispersed and shaped after trimming. Deterioration of secondary aggregates, resulting in the problem of wave high points near the ridgeline of stamping parts.
Description
Technical Field
The invention belongs to the technical field of stamping, and particularly relates to a stamping die structure with an adjustable profile height, in particular to a stamping die profile structure without repair welding adjustment.
Background
In the automobile stamping production process, in a single-variety stamping part full-sequence die, the wave of the surface near the ridge line cannot be optimized after the die without working procedure work near the ridge line is discharged, as shown in figure 1, the area marked by the moulding surface square frame of the lower die male die of the die 01 in the figure is the wave area of the moulding surface near the ridge line of the corresponding stamping part in the die, as shown in figure 2, the area marked by the moulding surface square frame of the upper die pressing part of the die 02 in the figure is the outer side plane of the ridge line in the pressing moulding surface of the upper die, as shown in figure 3, the area marked by the square frame 3 in the figure is the shape-conforming area of the pressing moulding surface of the upper die, as shown in figure 4, after the stamping part with wave high points on the moulding surface near the ridge line is put into the die without working procedure work, the stamping part automatically falls into the theoretical position of the moulding surface of the lower die male die without working procedure work, the position marked by figure 4 is the integral structure of the moulding surface of the outer side plane of the ridge line in the lower die, and the position marked by R2 in the figure is the arc-shaped root-shaped surface of the lower die, and is the product design size, the position marked with @ 1 in the drawing is the product design angle of the lower die male die molded surface, the lowest point of the vertical direction of the symbolic molded surface of the upper die pressing molded surface at the position marked with Z1 in the drawing is H0, the position marked with R1 in the drawing is the position marked with C0 of the fillet vertex of the fillet circular arc molded surface of the reverse molding of the upper die pressing molded surface, the position marked with 5 in the drawing is a region without process deformation of a finished process piece, and the position marked with 6 in the drawing is a position close to the ridge line of the stamping piece, so that the wave height point of the molded surface cannot be optimized, the surface quality of the stamping piece is influenced, and unnecessary repair and waste products are caused. The position of the surface wave high point near the ridge line of the stamping part is mainly concentrated at the position near the ridge line, and the main reason of the generation is the material gathering trend which cannot be eliminated in the drawing and forming process of the plate, the stress release occurs on the surface near the ridge line in the trimming process of the flange edge, so that the surface wave near the ridge line generates diffusion deterioration, the secondary material gathering change occurs on the surface near the ridge line in the shaping process of the ridge line shaping work, so that the surface wave near the ridge line generates the wave high point of the secondary material gathering, no work content exists in the area near the ridge line in the process without work, so that the surface wave high point near the ridge line does not generate change, and the surface wave high point of the surface wave near the ridge line remains on the surface of the stamping part.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a stamping die structure for offsetting the wave height points of the profile near the ridge line of the stamping part.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme, which is described in the following with reference to the attached drawings:
a stamping die structure for offsetting the wave height points of a profile near a ridge line of a stamping part comprises an upper die pressing profile 02 of a die, a lower die male die profile 01 of the die and a lower die profile adjusting block 03;
the lower die convex die surface 01 is provided with a lower die surface adjusting block 03, an open molding surface 04 of an upper die pressing molding surface of the die is arranged in the upper die pressing molding surface 02 corresponding to the molding surface of the lower die surface adjusting block 03, and the reverse molding fillet molding surface is opened at the same time and at the same time, so that a stamped part with a molding surface wave height point near a stamped part ridge is automatically dropped into a theoretical position A of the lower die convex die surface after being thrown into the die, and the working process of upward jacking the lower surface of the outer side plane of the stamped part ridge is realized through die assembly of the upper die and the lower die.
Further, the lower die profile adjusting block 03 is vertically arranged and fixed on an installation base surface 9 on the outer side of a ridge line 01 of the lower die male die profile of the die through an installation screw 7 and an installation pin 8;
The upper surface of the lower die profile adjusting block 03 is a standard die profile M finished by numerical control machining, namely the surface close to the outer side plane of the ridge of the stamping part is a working surface of the lower die profile adjusting block and comprises an upper surface plane Z3 of the lower die profile adjusting block and a lower die profile adjusting block arc profile R4.
Further, a width B1 of a pressing space open-type surface of a corresponding area of a plane outside a stamping part ridge line in the upper die pressing profile 02 is determined according to a profile width outside the stamping part ridge line, and a length L1 of the pressing space open-type surface between a horizontal left transition joint 10 of the upper die pressing profile hollow open-type surface and a horizontal right transition joint 11 of the upper die pressing profile hollow open-type surface is L2+20mm, wherein: l2 is the length of the lower die profile adjustment block in the horizontal direction.
Further, a lower die profile adjusting block arc-shaped profile R4 is arranged on the profile of the lower die profile adjusting block 03 and used for limiting the fillet of the root of the reversely-formed ridge of the stamping part; the upper surface plane Z3 of the lower die profile adjusting block and the arc profile R4 of the lower die profile adjusting block are of an integrated profile vertical direction adjustable structure;
after a stamping part with wave high points on the profile near the ridge is put into a die without working procedure work, the stamping part automatically falls into the lower die male die profile theoretical position A, the upper surface plane Z3 of the lower die profile adjusting block is attached to the lower surface plane of the profile on the outer side of the ridge of the stamping part, the upper surface of the arc-shaped profile R4 of the lower die profile adjusting block is attached to the lower surface of the reverse-forming fillet profile on the outer side of the ridge of the stamping part, and the blank opening profile 04 of the upper die pressing profile of the die is arranged in the upper die pressing profile 02 of the die corresponding to the profile position of the 03 of the lower die profile adjusting block.
Further, the horizontal left side installation fit clearance X1 of the lower die profile adjusting block is 0.1mm, the horizontal right side installation fit clearance X2 of the lower die profile adjusting block is 0.1mm, and the horizontal front side installation fit clearance X3 of the lower die profile adjusting block is 0.1 mm.
Further, the length L2 of the lower die profile adjusting block in the horizontal direction is determined according to the wave height point range;
the width B2 of the lower die profile adjusting block along the horizontal direction is determined according to the profile width outside the ridge line of the stamping part;
the height H2 of the left end of the lower die profile adjusting block along the vertical direction and the height H3 of the right end of the lower die profile adjusting block along the vertical direction are determined according to the effective vertical height of the lower die male die profile.
Further, the thickness T of the adjusting pad under the lower die profile adjusting block of the adjusting pad 12 under the lower die profile adjusting block can be increased or decreased under the lower die profile adjusting block 03;
the upper surface plane Z3 of the lower die profile adjusting block is the designed size of a stamping part product;
the upper surface plane angle 2 of the lower die profile adjusting block is a design angle of a stamping part product;
the size of the arc-shaped surface R4 of the lower die profile adjusting block is the designed size of a stamping product.
Further, the height H1 of the vertical direction of the blank open plane at the position of the plane open plane Z2 in the upper die blank molding surface is H0-3T, and H0 is indicated as the position of the lowest point of the vertical direction of the upper die blank conformal molding surface.
Further, the position of a back-forming open fillet vertex C in the upper die pressing profile at the position of an R3 back-forming open fillet surface in the upper die pressing profile is C0-3T, and C0 represents the position of the back-forming fillet vertex of the upper die pressing profile; t represents the thickness of the adjusting pad under the lower die profile adjusting block.
Furthermore, the thickness T of the adjusting pad under the lower die profile adjusting block is 0.1mm +0.2mm +0.2mm of the combined size of the split gaskets.
A stamping die structure for offsetting the wave height point of a profile near a ridge line of a stamping part comprises an upper die pressing profile without working procedure work, a lower die male die profile without working procedure work and a lower die profile adjusting block;
as shown in fig. 5 and 6, a lower die profile adjusting block labeled 03 in the vertical drawing is fixed on a mounting base surface labeled 9 in the drawing on the outer side of a ridge line of a lower die male die of a 01 non-working die labeled in the drawing by using a mounting bolt labeled 7 in the drawing and a mounting pin labeled 8 in the drawing by using a mounting fit clearance labeled X1/X2/X3 in the drawing, and the upper surface of the lower die profile adjusting block labeled 03 in the drawing, namely the surface close to the outer side plane of the ridge line of a stamping part is a working surface of the lower die profile adjusting block;
as shown in fig. 7, a square box 04 in the drawing is an empty open profile of an upper die pressing profile of the die, a pressing empty open profile width B1 of a region corresponding to a plane outside a ridge line of a stamping part in the upper die pressing profile is indicated by 10 and 11 in the drawing as a horizontal left-side transition joint of the upper die pressing hollow open profile and a horizontal right-side transition joint of the upper die pressing hollow open profile, and a pressing empty open profile length L1 is L2+20 mm;
As shown in fig. 8, H1, marked at the position Z2 in the figure, is the size of the open of the upper die pressing profile, that is, the height H1 of the vertical direction of the pressing open profile at the position Z2 of the middle plane open profile of the upper die pressing profile;
an arc-shaped surface used for limiting the fillet at the root part of a reversely-formed ridge of a stamping part is arranged on the molded surface of the molded surface adjusting block of the lower die, the molded surface of the molded surface adjusting block of the lower die and the arc-shaped surface of the molded surface adjusting block of the lower die are of an integrated vertical direction adjustable structure of the molded surface, an adjusting pad can be added or removed under the molded surface adjusting block of the lower die, after the stamping part with a wave high point on the molded surface near the ridge is put into a die without working procedure, the stamping part automatically falls into the theoretical position of the molded surface of the lower die male die without working procedure, the upper surface plane of the molded surface adjusting block of the lower die is attached to the lower surface of the molded surface of the outer side of the ridge of the stamping part, the upper surface of the arc-shaped surface adjusting block of the lower die is attached to the lower surface of the molded surface of the stamping part, an open molded surface is arranged in the molded surface of the upper die without working procedure corresponding to the molded surface of the molded surface adjusting block of the lower die, and the reversely-formed fillet surface is also open;
as shown in fig. 5 and 6, the horizontal left mounting fit clearance X1, the horizontal right mounting fit clearance X2 and the horizontal front mounting fit clearance X3 of the lower die profile adjusting block are respectively 0.1mm, 0.1mm and 0.1mm, respectively;
As shown in fig. 9, the thickness T of the adjusting pad under the lower die profile adjusting block marked 12 in the drawing is the adjusting pad thickness under the lower die profile adjusting block, and is the split gasket combined size 0.1mm +0.2mm +0.2mm, the upper surface plane Z3 of the lower die profile adjusting block is the design size of the stamped part product, the upper surface plane angle 2 of the lower die profile adjusting block is the stamped part product design angle, the size of the circular arc profile R4 of the lower die profile adjusting block is the stamped part product design size, the height H1 in the vertical direction of the stamped part open-type surface at the position of the plane open-type surface Z2 in the upper die stamped part profile is H0-3T, the position C of the vertex of the reverse-forming open-type angle in the upper die stamped part at the position of the reverse-forming open-type surface R3 in the upper die stamped part profile is C0-3T, and the wave state near the ridge line profile marked 13 in the upper and lower die after the upper and lower dies are closed.
As shown in FIG. 10, the length L2 of the lower die profile adjusting block along the horizontal direction is determined according to the wave height point range, the height H2/H3 of the left end and the right end of the lower die profile adjusting block along the vertical direction is determined according to the effective vertical height of the lower die male die profile, and as shown in FIG. 11, the width B2 of the lower die profile adjusting block along the horizontal direction is determined according to the profile width outside the ridge line of the stamping part.
Compared with the prior art, the invention has the beneficial effects that:
in order to optimize the state of the wave high point of the profile near the ridge line of the stamping part, as shown in fig. 9, the invention provides that a lower die profile adjusting block 03 is arranged on the integral profile 01 of the lower die male die of the die without working procedure, an open profile 04 of an upper die pressing profile is arranged in the upper die pressing profile 02 of the die without working procedure corresponding to the profile position of the adjusting block of the lower die profile, and a reverse-forming fillet profile is opened at the same time and space, so that after the stamping part with the wave high point on the profile near the ridge line is put into the die without working procedure, the stamping part automatically falls into the profile A position of the lower die male die without working procedure, and the working process of pushing up the lower surface of the outer side plane of the ridge line of the stamping part is realized through closing the upper die and the lower die, so that the stress of plastic deformation of the inner profile after the forming of the stamping part is released, the wave high point of the profile near the ridge line of the stamping part is counteracted, and the problem that the wave high point of the profile near the ridge line of the stamping part is generated due to drawing and forming material gathering is solved, The problems of dispersion of trimming waves and secondary material gathering deterioration of the trimming waves and serious profile wave height points near the ridge lines of the produced stamping parts are solved.
The lower die profile adjusting block is a split compensation structure in the structural design of the die, and has the following advantages compared with an integral uncompensated structure in the structural design of the die:
In the structural design of the die, the profile of the split compensation structure of the lower die profile adjusting block does not need to be subjected to compensatory repair welding modification, as shown in fig. 10 and 11, the profile of the lower die profile adjusting block is a schematic diagram of the lower die profile adjusting block in the invention, and the profile marked M in the diagram is a standard profile of the die after numerical control processing is finished.
The invention is not only beneficial to reducing the workload of debugging and modification, but also can avoid unqualified data of the die profile caused by repair welding and modification, and mainly solves the problems that the profile near the ridge line of the stamping part generates waves due to drawing and forming aggregate, the waves are dispersed through trimming waves, the secondary aggregate of shaping is deteriorated, and the generated wave height point of the profile near the ridge line of the stamping part is generated. The invention can be applied to the positions of the molded surfaces near any ridge in the dies with different shapes of stamping parts, and can carry out standardized management at the initial stage of die structure design, thereby reducing the cost of compensation modification investment at the die debugging stage.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic top view of a prior art original lower die punch profile;
FIG. 2 is a schematic bottom view of a prior art original molded material loading profile;
FIG. 3 is a schematic elevational side view of an original upper mold swage profile in the prior art;
FIG. 4 is a schematic cross-sectional view of a prior art primary mold operation;
FIG. 5 is a schematic top view of a lower mold punch profile with a lower mold profile adjustment block according to the present invention;
FIG. 6 is a schematic side view of a lower die male die profile with a lower die profile adjustment block according to the present invention;
FIG. 7 is a schematic bottom view of an upper die swage profile with an upper die swage profile open according to the present invention;
FIG. 8 is a schematic side view of an upper die swage profile with an upper die swage profile open in the invention;
FIG. 9 is a schematic cross-sectional view of the operation of the mold with the lower mold surface adjustment block and the upper mold swage surface open according to the present invention;
FIG. 10 is a schematic side view of a lower die profile adjustment block of the present invention;
FIG. 11 is a schematic top view of a lower die profile adjustment block of the present invention;
in the figure:
1. the method comprises the following steps of (1) forming a corrugated area of a profile near a ridge line of a stamping part, (2) forming a plane outside the ridge line in a pressing profile, 3) forming a shape-conforming area of a pressing profile of an upper die, 4) forming an integral structure of the profile outside the ridge line in a male die profile of a lower die, 5) finishing a process part without a process deformation area, and 6) forming a corrugated height point of the profile near the ridge line of the stamping part;
7. Mounting screws, 8 mounting pins, 9 mounting base planes, 10 horizontal left-side transition joints of a hollow open profile of an upper die pressing profile, 11 horizontal right-side transition joints of the hollow open profile of the upper die pressing profile, 12 adjusting pads under lower die profile adjusting blocks, 13 gentle wave states of the profiles near ridge lines of stamping parts;
01. the method comprises the following steps of (1) forming a lower die male die profile of a die, 02, forming an upper die pressing profile of the die, 03, forming a lower die profile adjusting block, 04, and forming an open profile of the upper die pressing profile of the die;
A. the method comprises the following steps of (1) obtaining a lower die male die profile theoretical position, Z1. a conformal profile of an upper die pressing profile, R1 an arc profile of a fillet formed by the upper die pressing profile in a reverse forming mode, R2 a lower die profile in a reverse forming mode, and angle 1 an angle of the lower die male die profile;
H0. the lowest point position of the vertical direction of the square molded surface of the upper die pressing material, and the vertex position of the reverse molding fillet of the square molded surface of the C0. upper die pressing material;
x1. fitting clearance is arranged on the left side of the lower die profile adjusting block in the horizontal direction, X2. fitting clearance is arranged on the right side of the lower die profile adjusting block in the horizontal direction, and X3. fitting clearance is arranged on the front side of the lower die profile adjusting block in the horizontal direction;
B1. the width of the pressing and air-open molding surface, H1, the height of the pressing and air-open molding surface in the vertical direction, and L1, the length of the pressing and air-open molding surface;
Z2. forming a middle plane open surface of the upper die pressing molded surface, R3 forming a fillet open surface in the upper die pressing molded surface, and C forming a vertex of the fillet in the upper die pressing molded surface;
z3., the upper surface plane of the lower die profile adjusting block, R4, the arc profile of the lower die profile adjusting block, angle 2, the upper surface plane angle of the lower die profile adjusting block, and T, the thickness of the adjusting pad below the lower die profile adjusting block;
m, numerically controlling the processed standard molded surface of the die;
H2. the height of the left end of the lower die profile adjusting block in the vertical direction, the height of the right end of the H3. lower die profile adjusting block in the vertical direction, L2 the length of the lower die profile adjusting block in the horizontal direction, and B2 the width of the lower die profile adjusting block in the horizontal direction.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
the invention provides a stamping die structure for offsetting a profile wave height point near a ridge line of a stamping part, which comprises an open profile in a die upper die pressing profile 02 without working procedure work, a die lower die male die profile 01 without working procedure work and a lower die profile adjusting block 03;
the vertically arranged lower die profile adjusting block 03 is fixed on an installation base surface marked with 9 in a figure at the outer side of a ridge line of a male die profile 01 of a lower die of the die through an installation screw 7 and an installation pin 8, the upper surface M of the lower die profile adjusting block 03 is a standard die profile finished by numerical control machining, namely the surface close to the outer side plane of the ridge line of a stamping part is a working surface of the lower die profile adjusting block and comprises a plane profile Z3 and an arc profile R4;
The lower die profile adjusting block arc-shaped surface R4 used for limiting the fillet of the root part of the ridge line of the stamping part is arranged on the profile of the lower die profile adjusting block, the upper surface plane Z3 of the lower die profile adjusting block and the lower die profile adjusting block arc-shaped surface R4 form an integral vertical direction adjustable structure of the profile, the thickness of the adjusting pad can be increased and decreased under the lower die profile adjusting block, after the stamping part with the wave height point on the profile near the ridge line is put into a die without working procedure, the stamping part automatically falls into the lower die male die profile theoretical position A without working procedure, the upper surface plane Z3 of the lower die profile adjusting block is attached to the lower surface plane of the profile outside the ridge line of the stamping part, the upper surface of the lower die profile adjusting block arc-shaped surface R4 is attached to the lower surface of the fillet of the outer side of the ridge line of the stamping part, an open profile is arranged in the upper die pressing profile 02 of the die without working procedure corresponding to the profile adjusting block 03 profile of the lower die, namely an open molding surface 04 of the material pressing molding surface of the upper die of the die;
as shown in fig. 5 and 6, the horizontal left mounting fit clearance X1, the horizontal right mounting fit clearance X2 and the horizontal front mounting fit clearance X3 of the lower die profile adjusting block are respectively 0.1mm, 0.1mm and 0.1mm, respectively;
As shown in fig. 9, the length L2 of the lower die profile adjusting block in the horizontal direction is determined according to the wave height range, the width B2 of the lower die profile adjusting block in the horizontal direction is determined according to the profile width outside the ridge line of the stamping part, and the height H2/H3 of the left and right ends of the lower die profile adjusting block in the vertical direction is determined according to the effective vertical height of the lower die male die profile, the upper surface plane Z3 of the lower die profile adjusting block is the design size of the stamping part product, the upper surface plane angle ≤ 2 of the lower die profile adjusting block is the design angle of the stamping part product, and the size of the arc profile R4 of the lower die profile adjusting block is the design size of the stamping part product;
the thickness of the adjusting pad can be increased or decreased under the lower die profile adjusting block and is 0.1mm +0.2mm +0.2mm of the combined size of the split gaskets, the height H1 in the vertical direction of a pressing open profile at the position of a plane open profile Z2 in the upper die pressing profile is H0-3T, the fillet vertex position C at the position of a reverse forming fillet open profile R3 in the upper die pressing profile is C0-3T, the pressing open profile width B1 in the corresponding area of the plane at the outer side of a stamping part ridge line in the upper die pressing profile is determined according to the profile width at the outer side of the stamping part ridge line, and the length L1 of the pressing open profile between the horizontal transition nodes of the pressing open profile left and right is L2+20 mm.
The lower die profile adjusting block 03 with the vertically arranged lower die is of a vertical direction adjustable structure, the thickness of an adjusting pad can be increased and decreased under the lower die profile adjusting block 03, the empty open profile arranged in the die pressing profile 01 corresponding to the profile position of the lower die profile adjusting block 03 is a part of the whole pressing profile, on one hand, the thickness of the adjusting pad under the lower die profile adjusting block 03 with the vertically adjustable lower die profile adjusting block 03 is adjusted according to the angle change of the profile outside the ridge line of the stamping part, so that the height calculation and adjustment of the lower die profile adjusting block 03 in the vertical direction are facilitated, on the other hand, the empty open profile 04 of the die pressing profile on the die is integrated with the die pressing profile 02, and accurate profile matching between the empty open profile 04 of the die pressing profile and the lower die profile adjusting block 03 can be guaranteed.
As shown in fig. 5 and 6, the fitting clearance X1 for the left side of the lower die profile adjusting block in the horizontal direction is 0.1mm, the fitting clearance X2 for the right side of the lower die profile adjusting block in the horizontal direction is 0.1mm, and the fitting clearance X3 for the front side of the lower die profile adjusting block in the horizontal direction is 0.1mm, as shown in fig. 7 and 8, a box 04 in the figure is a blank open profile of a region corresponding to a stamping part ridge line outer side plane in the upper die blank profile 02, the width of the blank open profile is determined according to the profile width of the stamping part ridge line outer side, and the length L1 of the blank open profile 04 of the upper die blank open profile between the stamping part left and right transition nodes in the horizontal direction of the blank open profiles marked 10 and marked 11 in the figure is L2+20 mm;
As shown in fig. 9, the height H1 in the vertical direction of the pressing open face at the position marked with Z2 in the drawing is H0-3T, the fillet vertex position C at the position of the reverse molding fillet open face R3 in the pressing profile of the upper die is C0-3T, the thickness of the adjusting pad under the lower die profile adjusting block 03 marked with 12 in the drawing is the combined size of the split gaskets 0.1mm +0.2mm +0.2mm, the upper surface plane Z3 of the lower die profile adjusting block 03 is the design size of a stamped part product, the angle 2 is the design angle of the stamped part product, and the size of the arc-shaped face R4 of the lower die profile adjusting block is the design size of the stamped part product;
as shown in fig. 10, the length L2 of the lower die profile adjustment block in the horizontal direction is determined according to the wave height point range, and the height of the lower die profile adjustment block in the vertical direction is determined according to the effective vertical height of the lower die male die profile;
as shown in FIG. 11, the width B2 of the lower die profile adjustment block in the horizontal direction is determined by the profile width outside the ridge of the stamping.
As shown in fig. 5 and 6, the lower mold punch profile adjusting block 03 is assembled on the assembling machine base surface 9 of the mold lower mold punch profile 01 according to the assembling fit clearance X1/X2/X3 through the assembling screws 7 and the assembling pins 8.
As shown in fig. 7 and 8, the width B1 of the blank pressing open surface of the upper die pressing surface 04, the length L1 of the blank pressing open surface, and the height H1 of the blank pressing open surface in the vertical direction all cover the outer area of the ridge line corresponding to the wave near the ridge line of the stamping part.
As shown in fig. 9, the upper surface plane of the lower die profile adjusting block 03 and the arc profile are an integral profile, and the position of the upper surface of the lower die profile adjusting block 03 is adjusted by adjusting the thickness of the adjusting pad and increasing or decreasing the combined gasket, so that the working process of pushing the lower surface of the outer side plane of the ridge line of the stamping part upwards is realized. Therefore, stress of elastic deformation of the inner profile after the stamping part is formed is released, and the wave height point of the profile near the crest line of the stamping part is offset. Thereby ensuring the compensation process to be smoothly carried out.
The thickness of the adjusting pad under the lower die profile adjusting block 03 is a split gasket combination, and the gaskets can be increased or decreased at any time according to the change of stamping parts. The molded surface of the upper surface of the lower die molded surface adjusting block 03 is a standard molded surface M of the die which is finished by numerical control processing, so that the stress in the process of releasing the stress can be ensured to be uniform and reasonable.
According to the invention, the profile of the split compensation structure of the lower die profile adjusting block does not need to be subjected to compensatory repair welding modification, the profile is a standard product profile finished by numerical control machining, and whether the profile state after repair welding modification meets the numerical control profile state of the die or not does not need to be considered. The working process that the lower surface of the plane outside the ridge line of the stamping part is uniformly jacked upwards is achieved, the stress of elastic deformation of the inner profile of the stamping part after the stamping part is molded is uniformly released, and the phenomenon that the wave height points of the profile close to the ridge line of the stamping part are remained is offset. The problem of near the profile of stamping workpiece crest line because drawing shaping gathers the material and produces the wave, through the dispersion of deburring wave, the shaping secondary gathers the material and worsens, the profile wave height point near the stamping workpiece crest line that produces is serious is solved. The method is applied to a top cover outer plate mold at present, and the wave high point near a skylight opening of the top cover outer plate and close to the ridge line area of an outer side product is eliminated through a lower mold profile adjusting block split compensation structure.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims. And those not described in detail in this specification are well within the skill of those in the art.
Claims (9)
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| CN202010640392.3A CN111922203B (en) | 2020-07-06 | 2020-07-06 | Stamping die structure for offsetting profile wave height points near ridge lines of stamping parts |
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