CN104525722B - A kind of measuring method in drawing die gap - Google Patents

A kind of measuring method in drawing die gap Download PDF

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Publication number
CN104525722B
CN104525722B CN201410726932.4A CN201410726932A CN104525722B CN 104525722 B CN104525722 B CN 104525722B CN 201410726932 A CN201410726932 A CN 201410726932A CN 104525722 B CN104525722 B CN 104525722B
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China
Prior art keywords
thickness
drawing die
plate
flexible wire
compacting
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CN104525722A (en
Inventor
刘磊
王双明
杨春炎
黄绍基
袁会
廖阳
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LIUZHOU FUZHEN CAR BODY INDUSTRY Co Ltd
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LIUZHOU FUZHEN CAR BODY INDUSTRY Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/20Making tools by operations not covered by a single other subclass

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

The present invention discloses the measuring method in a kind of drawing die gap, comprise the following steps: A, have on the plate of pre-molding the position of sidewall be uniformly arranged measurement point and dig a hole, plate is positioned in the lower mold of drawing die, and Flexible wire is placed at the place of digging a hole, and the thickness of Flexible wire is more than the thickness of plate, suppress, measure Flexible wire compacting after thickness, this thickness deducts panel thickness, if its numerical value be on the occasion of, and within the 10% of panel thickness, then this sidewall point position of drawing die is arranged rationally;B, at punch top surface plane, uniformly stick the thin plate of fritter, described lamella thickness and the consistency of thickness of plate, Flexible wire is placed on thin plate limit, the thickness of this Flexible wire is more than gauge of sheet, suppressing, measure the thickness after Flexible wire compacting, this thickness deducts gauge of sheet, if its numerical range panel thickness ± 10% within, then this planar point position of drawing die is arranged rationally.This method is simple to operate, and efficiency is high, and accuracy rate is high.

Description

A kind of measuring method in drawing die gap
Technical field
The present invention relates to Stamping Die Technology field, be specifically related to the measuring method in a kind of drawing die gap.
Background technology
Drawing (also known as drawing) be utilize drawing die under the pressure effect of forcing press, by plate blank or hollow process part processing The processing method making open hollow part.It is one of punching press basic working procedure, is widely used in automobile, electronics, article of everyday use, instrument In the production of the various industrial department such as table, aerospace, it is possible not only to process rotating body parts, also can process box-like zero Part and other complex-shaped thin-walled parts.Drawing can be divided into not ironing and ironing.After the former draw forming zero Part, the wall thickness of its each several part is basically unchanged compared with the blank before drawing;Part after the latter's draw forming, its wall thickness and drawing Before blank compared the most thinning, this thinning be product requirement, the feature that part presents base thickness, wall is thin.In reality In production, applying more is not ironing.The mould that drawing is used is drawing die.Drawing die structure is relatively simple, Comparing with blanking die, working portion has bigger fillet, and surface quality requirements is high, and clearance between matrix and punch is slightly larger than sheet thickness.Draw Occur during prolonging that quality problems are mainly the drawing crack of the wrinkling of flange deformation region and barrel force transmission region.Ledge zone is wrinkling be due to Circumferential compressive force causes plate to lose stable and produce bending;The drawing crack of force transmission region is to cause owing to tension exceedes tensile strength Plate ruptures.Meanwhile, drawing deformed area plate has thickened, and force transmission region plate is the most thinning.These phenomenons show, in drawing During, the stress in blank Nei Ge district, strain regime are different, thus produced problem is the most different.The stress in each district of blank Being highly non-uniform with strain, even if being also so in flange deformation region, the closer to outer rim, deformation extent is the biggest, and plate increases Thickness is the most.Drawn component bottom wall thickness is the most thinning, and wall portion is thinning seriously with fillet the tangent, and oral area is the thickest.Owing to blank is each Place's deformation extent is different, and work-hardening capacity is the most different, shows as drawn component each several part hardness different, closer to oral area, firmly Spend the biggest.
The designing quality of drawing die directly affects the quality of product, also affects the service life of drawing die.Meanwhile, drawing die Life-span is low, poor performance, can affect again qualification rate and the cost of punching press parts of punching press parts in turn.The convex-concave of Drawing Die The determination of die clearance and structure design, be to ensure that the important step of the Practical Performance of drawing die.
In order to preferably solve the problems referred to above, it is necessary to research drawing process in blank Nei Ge district thicken thinning degree, To measure the gap of drawing die, thus drawing die is adjusted and improves.
Summary of the invention
It is an object of the invention to provide the measuring method in a kind of drawing die gap, this method is simple to operate, and efficiency is high, accurate Really rate is high, may determine that top, to position, calculates amount of interference by Flexible wire measurement, and then can be by compensating drawing die It is adjusted and improves.The method of the present invention is especially suitable for the clearance measurement of drawing die.
For achieving the above object, technical scheme is as follows:
The measuring method in the drawing die gap of the present invention, comprises the following steps:
A, first it is pre-pressed into a block-type plate, plate has the position of sidewall be uniformly arranged measurement point, measure a some position Putting and dig a hole, be then positioned in the lower mold of drawing die by plate, place Flexible wire at the place of digging a hole, the thickness of this Flexible wire is big In the thickness of plate, suppressing, then measure the thickness after the compacting of Flexible wire, this thickness deducts the thickness of plate, as Really its numerical value be on the occasion of, and within the 10% of panel thickness, then this side point position of drawing die arranges rationally, otherwise this point Drawing die side arranges defective;
B, on the mild position of punch upper surface Curvature varying, uniformly stick the thin plate of fritter, described lamella thickness with The consistency of thickness of plate, places Flexible wire on thin plate limit, and the thickness of this Flexible wire is more than gauge of sheet, presses System, then measures the thickness after the compacting of Flexible wire, and this thickness deducts gauge of sheet, if its numerical range is thick at thin plate Degree ± 10% within, then this planar point position of drawing die arranges rationally, and otherwise this drawing die plane arranges defective.
Described Flexible wire is electric fuse, nickel wire or filamentary silver.
Described sidewall is fluted in part or the fillet position of bossing and sidewall position.
The measuring method in drawing die gap of the present invention, by utilizing the soft easily deformable character of soft metal silk quality, during measurement Can obtain the gap parameter between drawing die accurately, and for the different sidewall of test request and the mild portion of Curvature varying Position, is provided with different method of testings.Use and dig a hole on plate, the mode that Flexible wire directly contacts with punch is placed, Then suppress, it is thus achieved that sidewall position upper and lower mould gap accurately, and measured;Use on punch, increase sheet metal, so After on thin plate limit, Flexible wire is set, then suppress, it is thus achieved that upper and lower mould gap, Curvature varying mild position accurately, then add To measure.Eventually pass and contrast with theoretical value, it is thus achieved that the parameter that on drawing die, each test point is the most qualified, it is considered to whether to drawing Prolong mould and carry out the process such as further polishing, ensure drawing die precision, improve the stability of drawing die.Disclosure is particularly well suited to The clearance measurement of drawing die, it is possible to the wrinkling and sidewall effectively solving the flange deformation region that drawing die occurs in drawing process passes The quality problems such as the drawing crack in power district, improve punching press parts quality and qualification rate, meet the needs of batch production, have good Economic benefit.The measuring method in the drawing die gap of the present invention, simple to operate, efficiency is high, and accuracy rate is high, and low cost has The highest practical value.
Detailed description of the invention
Below by specific embodiment, the present invention is described in detail.
Embodiment 1
Actual test is exemplified below:
A, being first pre-pressed into a block-type plate, sheet thickness is 0.8mm, has the position of sidewall to be uniformly arranged survey on plate Amount point, digs a hole measuring some position, is then positioned in the lower mold of drawing die by plate, places electric fuse, this guarantor at the place of digging a hole The thickness of danger silk, more than the thickness of plate, is suppressed, and the thickness recording the electric fuse after one of them compacting is 1.3mm, should The thickness of the electric fuse after place's compacting deducts the thickness of plate at this and obtains 0.5mm, and at this 62.5% of panel thickness, this point draws Prolong mould sidewall spacers defective;The thickness recording the electric fuse after one of them compacting is 0.82mm, the insurance after suppressing at this The thickness of silk deducts the thickness of plate at this and obtains 0.02mm, and at this 2.5% of panel thickness, this drawing die sidewall spacers is closed Lattice;
B, on the mild position of punch upper surface Curvature varying, uniformly stick the thin plate of fritter, described lamella thickness with The consistency of thickness of plate, sheet thickness is 0.8mm, places electric fuse on thin plate limit, and the thickness of this electric fuse is more than thin plate Thickness, suppresses, and the thickness recording the electric fuse after one of them compacting is 1.04mm, and the thickness of the electric fuse after compacting subtracts Going gauge of sheet at this to obtain 0.24mm, at this 30% of lamella thickness, this drawing die gap is defective;Record wherein one The thickness of the electric fuse after individual compacting is 0.92mm, and the thickness of the electric fuse after compacting deducts gauge of sheet at this and obtains 0.12mm, at this 15% of lamella thickness, this drawing die gap is defective.
Embodiment 2
Actual test is exemplified below:
A, being first pre-pressed into a block-type plate, panel thickness is 0.9mm, has the position of sidewall to be uniformly arranged survey on plate Amount point, digs a hole measuring some position, is then positioned in the lower mold of drawing die by plate, places filamentary silver, this filamentary silver at the place of digging a hole Thickness more than the thickness of plate, suppress, the thickness recording the filamentary silver after one of them compacting is 0.94mm, after compacting The thickness of filamentary silver deducts the thickness of plate and obtains 0.04mm, and for the 4.44% of panel thickness, this drawing die sidewall spacers is qualified;Survey The thickness obtaining the electric fuse after suppressing at one of them thickness is 0.92mm, and the thickness of the electric fuse after suppressing at this deducts plate at this The thickness of part obtains 0.02cm, and at this 2.22% of panel thickness, this drawing die sidewall spacers is qualified;
B, uniformly sticking the thin plate of fritter on the mild position of punch upper surface Curvature varying, described panel thickness is 0.9mm, places filamentary silver on thin plate limit, and the thickness of this filamentary silver is more than gauge of sheet, suppresses, and records one of them compacting After the thickness of filamentary silver be 0.75mm, the thickness of the filamentary silver after compacting deducts gauge of sheet and obtains-0.15mm, for lamella thickness -16.7%, this drawing die gap is defective;The thickness recording the electric fuse after one of them compacting is 0.86mm, after compacting The thickness of electric fuse deduct gauge of sheet at this and obtain-0.04cm, at this-the 4.44% of lamella thickness, this drawing die is put down Gap, face is qualified.
Embodiment 3
Actual test is exemplified below:
A, being first pre-pressed into a block-type plate, panel thickness is 0.7mm, has the position of sidewall to be uniformly arranged survey on plate Amount point, digs a hole measuring some position, is then positioned in the lower mold of drawing die by plate, places nickel wire, this nickel wire at the place of digging a hole Thickness more than the thickness of plate, suppress, the thickness recording the nickel wire after one of them compacting is 0.83mm, after compacting The thickness of nickel wire deducts the thickness of plate at this and obtains 0.13mm, at this 18.6% of panel thickness, and this drawing die sidewall spacers Defective;The thickness recording the electric fuse after one of them compacting is 0.78mm, and the thickness of the electric fuse after suppressing at this deducts At this, the thickness of plate obtains 0.08mm, and at this 11.4% of panel thickness, this drawing die sidewall spacers is defective;
B, on the mild position of punch upper surface Curvature varying, uniformly stick the thin plate of fritter, described lamella thickness with The consistency of thickness of plate, panel thickness is 0.7mm, places nickel wire on thin plate limit, and the thickness of this nickel wire is more than gauge of sheet, Suppressing, the thickness recording the nickel wire after one of them compacting is 0.75mm, and the thickness of the nickel wire after compacting deducts thin plate Thickness obtains 0.05mm, and for the 7.14% of lamella thickness, this drawing die plane clearance is qualified;Record after suppressing at one of them thickness The thickness of electric fuse be 0.76mm, the thickness of the electric fuse after compacting deducts gauge of sheet at this and obtains 0.06mm, at this The 8.6% of lamella thickness, this drawing die plane clearance is qualified.
Although, use general explanation, detailed description of the invention, the present invention is described in detail, but On the basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Cause This, modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.

Claims (2)

1. the measuring method in a drawing die gap, it is characterised in that comprise the following steps:
A, first it is pre-pressed into one block of plate, plate has the position of sidewall be uniformly arranged measurement point, dig a hole measuring a some position, Then being positioned in the lower mold of drawing die by plate, place Flexible wire at the place of digging a hole, the thickness of this Flexible wire is more than plate Thickness, suppress, then measure the thickness after the compacting of Flexible wire, this thickness deducts the thickness of plate, if its number Value be on the occasion of, and within the 10% of panel thickness, then this measurement point position of drawing die arranges rationally, otherwise this measurement point position The drawing die sidewall putting correspondence arranges defective;
B, on the mild position of punch upper surface Curvature varying, uniformly stick the thin plate of fritter, described lamella thickness and plate Consistency of thickness, on thin plate limit place Flexible wire, the thickness of this Flexible wire be more than gauge of sheet, suppress, so Thickness after the compacting of rear measurement Flexible wire, this thickness deducts gauge of sheet, if its numerical range is at lamella thickness Within ± 10%, then this position of drawing die arranges rationally, and otherwise this position of drawing die arranges defective.
The measuring method in drawing die gap the most according to claim 1, it is characterised in that: described Flexible wire is insurance Silk, nickel wire or filamentary silver.
CN201410726932.4A 2014-12-04 2014-12-04 A kind of measuring method in drawing die gap Active CN104525722B (en)

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Publication number Priority date Publication date Assignee Title
CN105115464B (en) * 2015-08-25 2018-01-30 兰州兰石集团有限公司 Plate-type heat exchanger slab mould gap measuring method
JP6723634B2 (en) 2016-01-20 2020-07-15 三菱重工業株式会社 Gap measuring device and gap measuring method
CN109248939B (en) * 2018-10-29 2020-03-10 上汽大众汽车有限公司 Method for measuring die closing allowance of stamping die

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JPH04253530A (en) * 1991-01-31 1992-09-09 Nissan Motor Co Ltd Production of drawing die
DE4343336B4 (en) * 1993-12-18 2007-06-21 Dieffenbacher Gmbh + Co. Kg Hydraulic thermoforming device
DE10300630B4 (en) * 2003-01-10 2005-03-24 Daimlerchrysler Ag Molding facility
CN100470195C (en) * 2005-10-20 2009-03-18 株式会社高桥型精 Board for measuring parallelism between surfaces of upper and lower surface plates, system for measuring parallelism between surfaces of upper and lower surface plates, and method for adjusting distan
CN202278101U (en) * 2011-11-03 2012-06-20 黄石市科捷机电设备制造厂 S-shaped flanging die for thin plates of power distribution cabinets
CN103994726B (en) * 2014-04-30 2016-11-16 南京航空航天大学 Fit between a kind of sheet metal component and mould the detection method in gap

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