CN109500219A - A kind of hole class blanking die and hole class blanking method - Google Patents
A kind of hole class blanking die and hole class blanking method Download PDFInfo
- Publication number
- CN109500219A CN109500219A CN201811553033.3A CN201811553033A CN109500219A CN 109500219 A CN109500219 A CN 109500219A CN 201811553033 A CN201811553033 A CN 201811553033A CN 109500219 A CN109500219 A CN 109500219A
- Authority
- CN
- China
- Prior art keywords
- hole
- punching
- extruded segment
- extruded
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004080 punching Methods 0.000 claims abstract description 105
- 239000000463 material Substances 0.000 claims description 47
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000011799 hole material Substances 0.000 description 110
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a kind of hole class blanking die and hole class blanking methods, including upper die and lower die；Upper mold includes upper die holder, the piercing punch being fixedly connected with upper die holder, moves down and moves up jointly with upper die holder；The head of the piercing punch is the punching edge of a knife, and the rear portion for being punched the edge of a knife is provided at least one section of extruded segment, and for carrying out extruding refine to the hole inner wall being punched out by the punching edge of a knife, the diameter of extruded segment is greater than the diameter d1 of the punching edge of a knife；Lower die includes: lower die holder, the punching concave die being fixedly connected with lower die holder, and it is the die hole of d7 that punching concave die, which has diameter, also, the diameter d7 of die hole is greater than the diameter of extruded segment.The head of piercing punch of the invention is punched the edge of a knife in addition to setting, extruded segment is also set up at the rear portion of the punching edge of a knife, extruded segment is at least provided with one section, using extruded segment, successively device to hole inner wall carries out extruding refine, the shear fracture for the hole inner wall being once punched is modified, to increase the accounting of the euphotic belt of the hole inner wall after punching.
Description
Technical field
The present invention relates to a kind of hole class blanking die and hole class blanking methods, belong to stamping technology field.
Background technique
In the prior art, the pressurized vessel in automobile safety air bag gas generator, can be by primary when being punched circular hole
Punching and multiple punching are processed, but both processing methods all existing defects, specific manifestation are as follows:
1. the section of blanking part is divided into four regions when using a punch press process forming parts, it may be assumed that fillet band a, light
Bright band b, fracture belt c and tetra- part burr d composition.Fig. 1 shows the structure in aforementioned four region.Euphotic belt is plate class part
It is mainly used for being attached the position of installation with other components after punching, thickness usually requires to account for the 70% of plate overall thickness
More than.The ratio that the thickness of euphotic belt accounts for plate thickness directly affects the service life of manufactured plate class part.Plate simultaneously
Thickness, intensity, plasticity, the toughness of the bright tape thickness and plate that class part processes itself etc. are related, at the same also with rushed
The degree of wear in gap and die point between the punch and matrix of sanction is related.Traditional primary punching increases the side of euphotic belt
Method are as follows: reduce the gap of punching punch and matrix.Reduce blade clearance, euphotic belt extends, and plate increases the extruding force of piercing punch
Greatly, the service life of piercing punch working portion abrasion aggravation, piercing punch reduces, meanwhile, blade clearance is small, secondary cut occurs
It splits, generates the second euphotic belt, influence product quality.
2. more than punching is then to complete to be punched by opening thick, refine (or multiple refine) to plate class part punching.It is more
Secondary punching process mostly uses progressive die, moreover, repeatedly punching mold clearance between matrix and punch is required it is high, compared with a punching process at
Type increased costs；Repeatedly punching is that the benchmark of satisfaction punching proposes higher standard to positioning simultaneously, realizes bright tape thickness
Account for that plate overall thickness ratio is bigger, and the requirement on machining accuracy of mold is higher；Furthermore repeatedly blanking operation is cumbersome extends production
Process time.
Therefore people prefer to that the narrow inner wall for causing hole of euphotic belt brought by once punching can be solved simultaneously using one kind
The feature side-wall contact area of matched installation is small to be caused to install unstable problem, and repeatedly brought by punching to mould
Has the problem of machining accuracy improves, cumbersome extension produces and processes time and increased costs.
Summary of the invention
The technical problems to be solved by the present invention are: overcome the deficiencies of the prior art and provide a kind of hole class blanking die and
Hole class blanking method, to increase the accounting for the euphotic belt being once punched.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of hole class blanking die, including upper mold and under
Mould；The upper mold is suitable for carrying out punching shaping to plate class part；The lower die be suitable for support plate class part, and with it is described on
The complete setting of mould.
Further, the upper mold includes: upper die holder, the piercing punch being fixedly connected with upper die holder, with upper die holder it is common under
It moves and moves up；The head of the piercing punch is the punching edge of a knife, and the rear portion for being punched the edge of a knife is provided at least one section of extruded segment, is used for
Extruding refine is carried out to the hole inner wall being punched out by the punching edge of a knife, the diameter of extruded segment is greater than the diameter d1 of the punching edge of a knife.
Further, the lower die includes: lower die holder, the punching concave die being fixedly connected with lower die holder, and punching concave die has straight
Diameter is the die hole of d7, also, the diameter d7 of die hole is greater than the diameter of extruded segment.
Further, the rear portion for the edge of a knife being punched on the piercing punch is provided with three sections of extruded segments, is followed successively by from front to back straight
The third extruded segment that the first extruded segment that diameter is d2, the second extruded segment that diameter is d3, diameter are d4, also, d1 < d2 < d3 <
d4<d7。
Further, be punched edge of a knife setting coaxial with three sections of extruded segments, and be punched the edge of a knife excircle and three sections squeeze
The excircle of section is located on the same inverted conical face, and the cone angle in the inverted conical face is 60 °~80 °.
Further, the rear portion of third extruded segment is additionally provided with the chip removal resigning section that diameter is d5 on the piercing punch, and
And d5 < d1 < d2 < d3 < d4 < d7.
Further, it is punched between the edge of a knife and the first extruded segment and is equipped with chip removal between two adjacent extruded segments and allow
Position slot, chip removal recessing groove are the recess being arranged between the punching edge of a knife and the first extruded segment or adjacent two extruded segments
Region, also, the volume of chip removal recessing groove is 1.5 times of corresponding extruded segment extrded material volume.
Further, the upper mold further includes stripper and force application part, and the through-hole of perforation is provided on the stripper, described
Piercing punch passes through the through-hole of stripper, and stripper is connected on upper die holder by the force application part, force section
Part is scalable, and force application part is used to for stripper to be pressed on the part to punching.
Further, the upper mold further includes upper padding plate and upper mounted plate, and the piercing punch is fixed on upper mounted plate, on
Fixed plate is connect by upper padding plate with upper die holder；The rear portion of the chip removal resigning section of the piercing punch is the main body that diameter is d6
Section, also, d5 < d1 < d2 < d3 < d4 < d6 < d7.
Further, the lower die further includes lower bolster, and punching concave die is connect by lower bolster with lower die holder, and lower bolster is under
The through-hole coaxial with the die hole in punching concave die is provided on die holder.
The present invention also provides a kind of hole class blanking methods, which comprises the steps of:
Part to be processed is placed on specified position to be processed by step S1；
Step S2, upper die holder move down under the drive of the upper table of lathe, and piercing punch is driven integrally to move down, benefit
Parts to be processed is punched with the punching edge of a knife on the head of piercing punch, it is thick to complete opening for hole；
Step S3, upper die holder continue to move down, and the extruded segment on piercing punch head successively extruded hole inner wall makes the material of hole inner wall
Expect to extend to disconnected column layer region；
Step S4, piercing punch enter in the die hole of punching concave die engaged therewith, until whole extruded segment completions pair
The extruding of hole inner wall, then upper die holder is moved up with the upper table of lathe, is driven piercing punch integrally to move up, is utilized again
The reverse movement device to hole inner wall of extruded segment carries out reverse extrusion, until entire piercing punch exits part.
Further, telescopic force application part and stripper are installed on upper die holder, permission punching convex is provided on stripper
The through-hole for the perforation that mould passes freely through, in step s 2, during piercing punch integrally moves down, stripper first touches to be added
The part of work is pressed on stripper on part to be processed, piercing punch passes through by force application part to the thrust of stripper
After through-hole on stripper, part is punched by being punched the edge of a knife.
Further, the rear portion for the edge of a knife being punched on piercing punch is provided with three sections of extruded segments, and being followed successively by diameter from front to back is
The third extruded segment that the second extruded segment that the first extruded segment of d2, diameter are d3, diameter are d4, the diameter for being punched the edge of a knife are
D1, the diameter of the die hole of punching concave die are d7, also, d1 < d2 < d3 < d4 < d7；Step S3 includes the following steps: again
Step T1, upper die holder continue to move down, and the first extruded segment squeezes the material of the hole inner wall after punching, make in hole
Material on wall extends under the extruding of the first extruded segment to fracture layer region；
Step T2, the second extruded segment squeeze the material for the hole inner wall that refine is squeezed through the first extruded segment, make hole
Material on inner wall extends under the extruding of the second extruded segment to fracture layer region；
Step T3, third extruded segment squeeze the material for the hole inner wall that refine is squeezed through the second extruded segment, make hole
Material on inner wall extends under the extruding of third extruded segment to fracture layer region.
Further, it is punched between the edge of a knife and the first extruded segment and is equipped with chip removal between two adjacent extruded segments and allow
Position slot, the material on the inner wall of hole extends under the extruding of each section of extruded segment to fracture layer region, and enters chip removal recessing groove.
After above-mentioned technical proposal, the invention has the following advantages:
1) head of piercing punch of the invention also sets up extruding at the rear portion of the punching edge of a knife in addition to the setting punching edge of a knife
Section, extruded segment is at least provided with one section, and using extruded segment, successively device to hole inner wall carries out extruding refine, to the hole inner wall being once punched
Shear fracture be modified, with increase punching after hole inner wall euphotic belt accounting.It is gone out using blanking die of the invention
Hole can achieve the effect that secondary punching substantially, and euphotic belt accounting can reach 80% or more, increase the quantity of extruded segment, may be used also
Suitably to increase euphotic belt accounting, increase the feature side-wall contact area of the matched installation of the inner wall in hole, makes installation more
It is firm, avoid secondary punching bring mold machining accuracy raising, cumbersome extension production and processing time and increased costs
The problem of.
2) it is punched between the edge of a knife and the first extruded segment and is equipped with chip removal recessing groove between two adjacent extruded segments,
Chip removal recessing groove is the sunk area being arranged between the punching edge of a knife and the first extruded segment or adjacent two extruded segments,
Also, the volume of chip removal recessing groove is 1.5 times of corresponding extruded segment extrded material volume, guarantees the material on the hole wall being extruded
Material is able to enter chip removal recessing groove after extrusion.The volume later period due to being extruded material also needs to be extruded, excess stock
Discharge, no pollution to the environment.
3) it is punched hole Nell wall using blanking die of the invention, the burr of stamping can be effectively reduced, make it in group
The remaining parts of air-bag module, which can avoid burr, when dress influences to be installed in place, and guarantees the quality of air bag, increases it
The stability of work.The outer end of multiple extruded segments of piercing punch preferably uses rounded structure, when carrying out refine to hole wall,
Stamping rushes when acting on the extruding force on piercing punch and can be shared and reached in multiple extruded segments, and then reducing punching
Abrasion of the hole wall to piercing punch is cut out, die life is extended.
Detailed description of the invention
Fig. 1 is the schematic diagram of the structure of the inner wall of the punching after being once punched in the prior art；
Fig. 2 is the overall structure diagram of hole class blanking die of the invention；
Fig. 3 is state diagram when hole class blanking die of the invention is punched part；
Fig. 4 is the main view of piercing punch of the invention；
Fig. 5 is the partial structurtes enlarged drawing on the head of piercing punch of the invention；
Fig. 6 is state diagram when the first extruded segment device to hole inner wall of the invention squeezes refine；
Fig. 7 is the portion the M partial enlarged view of Fig. 6；
Fig. 8 is state diagram when the second extruded segment device to hole inner wall of the invention squeezes refine；
Fig. 9 is the portion the N partial enlarged view of Fig. 8；
Figure 10 is state diagram when third extruded segment device to hole inner wall of the invention squeezes refine；
Figure 11 is the portion the Q partial enlarged view of Figure 10；
Figure 12 is three sections of extruded segment device to hole inner wall state diagrams after extruding of the invention；
Figure 13 is the portion the R partial enlarged view of Figure 12.
Specific embodiment
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail.
Unless not defining, the technical term or scientific term used herein, which is should be in fields of the present invention, to be had
The ordinary meaning that the personage of general technical ability is understood." first " used in the invention patent specification and claims,
" second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish different compositions
Part.Equally, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates that there are at least one.
As shown in Fig. 2 to Figure 13, a kind of hole class blanking die, including upper die and lower die.
The upper mold includes upper die holder 1, and the piercing punch 10 being fixedly connected with upper die holder 1, and piercing punch 10 is with upper
Die holder 10 is moved down and is moved up jointly.The head of the piercing punch 10 is the punching edge of a knife 101, the rear portion setting of the punching edge of a knife 101
There is at least one section of extruded segment, the diameter of extruded segment is greater than the diameter d1 of the punching edge of a knife, and extruded segment to by the punching edge of a knife 101 for rushing
The hole inner wall determined carries out extruding refine.
The lower die includes:
Lower die holder 8,
The punching concave die 6 being fixedly connected with lower die holder 8, it is the die hole 61 of d7 that punching concave die 6, which has diameter, also, recessed
The diameter d7 of die hole 61 is greater than the diameter of extruded segment.
The head of piercing punch 10 of the invention is punched the edge of a knife 101 in addition to setting, also sets up at the rear portion of the punching edge of a knife 101
Extruded segment, extruded segment is at least provided with one section, and using extruded segment, successively device to hole inner wall carries out extruding refine, to the hole being once punched
The shear fracture of inner wall is modified, to increase the accounting of the euphotic belt of the hole inner wall after punching.It is rushed using blanking die of the invention
Hole out can achieve the effect that secondary punching substantially, and euphotic belt accounting can reach 80% or more, increase the quantity of extruded segment,
Euphotic belt accounting can also suitably be increased, avoid secondary punching bring mold machining accuracy raising, cumbersome extension life
The problem of producing process time and increased costs.
The present embodiment 1, for three sections of extruded segments are arranged, the diameter of three sections of extruded segments is according to the side from head to tail portion
To being gradually increased, so that successively device to hole inner wall carries out extruding refine using this three sections of extruded segments.Specifically, such as Fig. 4, Fig. 5,
On piercing punch 10 be punched the edge of a knife 101 rear portion be provided with three sections of extruded segments, be followed successively by from front to back diameter be d2 first squeeze
Press the third extruded segment 104 that section 102, the second extruded segment 103 that diameter is d3, diameter are d4, also, d1 < d2 < d3 < d4 < d7.
It is punched the setting coaxial with three sections of extruded segments of the edge of a knife 101, and is punched the excircle and three sections of extruded segments of the edge of a knife 101
Excircle be located on the same inverted conical face, the cone angle in the inverted conical face is 60 °~80 °.The selection of cone angle degree with
It is extruded on the basis of the volume of material.It is d5's that the rear portion of third extruded segment 104, which is additionally provided with diameter, on the piercing punch 10
The diameter of chip removal resigning section 105, and d5 < d1 < d2 < d3 < d4 < d7, chip removal resigning section 105 is minimum, reserves for the discharge of iron filings
Space guarantees that the volume at chip removal resigning section is greater than and is extruded 1.5 times of material volume.It is punched the edge of a knife 101 and the first extruded segment
Chip removal recessing groove is equipped between 102 and between two adjacent extruded segments, chip removal recessing groove is setting in the punching edge of a knife
101 and first between extruded segment 102 or sunk area between adjacent two extruded segments, also, the body of chip removal recessing groove
Product is 1.5 times of corresponding extruded segment extrded material volume.
The punching face that Fig. 6, Fig. 7 show the first extruded segment device to hole inner wall carries out the case where squeezing refine for the first time.To zero
Part carries out in blanking process, after first edge of a knife (diameter d1) of piercing punch breaks through material, the first pressed end of piercing punch
(diameter d2) is contacted with the a-quadrant of plate class part, the first pressed end of first edge of a knife of piercing punch and piercing punch it
Between form chip removal recessing groove, i.e. B area in Fig. 7, the volume of B area is set greater than 1.5 times of the volume of a-quadrant, guarantees A
The material in region enters B area under the extruding of the first pressed end of piercing punch.If the volume of B area is too small, a-quadrant
Material is extruded extend downwardly during can increase extruding force to piercing punch 10, cause the first extruded segment of piercing punch
Abrasion aggravation, shortens the service life of piercing punch.
The punching face that Fig. 8, Fig. 9 show the second extruded segment device to hole inner wall carries out the case where second of extruding refine.Punching
Punch-pin 10 moves downward, and (diameter is the second extruded segment (diameter d3) of piercing punch with the first extruded segment for being punched punch-pin
D2 the region the C contact of the plate class part after) squeezing, squeezes the region C, is also formed between the first extruded segment and the second extruded segment
Chip removal recessing groove, the i.e. region D in Fig. 9, the second extruded segment squeeze the material at the region C in Fig. 9, the volume setting in the region D
It is 1.5 times of the volume greater than the region C, guarantees that the material in the region C enters the area D under the extruding of the second extruded segment of piercing punch
Domain.If the volume in the region D is too small, the material in the region C is extruded extend downwardly during can increase extruding to piercing punch
Power causes the abrasion aggravation of the second pressed end of piercing punch, shortens the service life of piercing punch.
The punching face that Figure 10, Figure 11 show third extruded segment device to hole inner wall carries out the case where third time squeezes refine.Punching
Hole punch-pin 10 moves downward, the third extruded segment (diameter d4) of piercing punch and the second extruded segment (diameter for being punched punch-pin
The region the E contact of plate class part after squeezing for d3), the second extruded segment of piercing punch 10 and the third of piercing punch are squeezed
It presses and forms chip removal recessing groove between section, is i.e. the region F in Figure 11, third extruded segment squeezes the material at the region E in Figure 11, F
The volume in region is set greater than 1.5 times of the volume in the region E, guarantees the material in the region E in piercing punch third extruded segment
It squeezes lower into the region F.If the volume in the region F is too small, the material in the region E is extruded extend downwardly during can increase and liquidate
The extruding force of hole punch-pin causes the abrasion aggravation of piercing punch third pressed end, shortens the service life of piercing punch.
In order to ensure piercing punch 10 is during processing part, part can be positioned, and the upper mold is also wrapped
Including stripper 5 and force application part 4, in the present embodiment, force application part is spring part, the through-hole of perforation is provided on the stripper 5,
The piercing punch 10 passes through the through-hole of stripper 5.One end of spring part is connected on upper die holder 1, spring part it is another
End is connected on stripper 5, and spring part is scalable, and stripper 5 is by the elastic compression of spring part on the part 9 to punching.
When work, stripper 5 moves down jointly with upper die holder 1, until stripper 5 touches part 9, upper die holder 1 continues downwards
Mobile, at this point, stripper 5 is pressed on part 9, elastic force is put aside in spring part compression, and stripper 5 is under the elastic force effect of spring part
It is pressed on part 9.Upper die holder continues to move down, and the through-hole that piercing punch 10 passes through stripper 5 is punched part.
Upper mold further includes upper padding plate 2 and upper mounted plate 3, and the piercing punch 10 is fixed on upper mounted plate 3, upper mounted plate
3 are connect by upper padding plate 2 with upper die holder 1；The rear portion of the chip removal resigning section 105 of the piercing punch 10 is the main body that diameter is d6
Section 106, also, d5 < d1 < d2 < d3 < d4 < d6 < d7.
The lower die further includes lower bolster 7, and punching concave die 6 is connect by lower bolster 7 with lower die holder 8, lower bolster 7 and lower die
The through-hole coaxial with the die hole 61 in punching concave die 6 is provided on seat 8.
Working principle of the present invention is as follows:
Upper die holder 1 moves down under the drive of the upper table of lathe, drives piercing punch 10, spring part and stripper
5 move down jointly, and stripper 5 first touches part 9 to be processed, and the stopping of stripper 5 moves down, and compression spring member passes through spring part
Elastic force be pressed on stripper 5 on part 9.After passing through the through-hole on stripper 5 in 10 folding process of piercing punch, touch
Part 9 is punched part 9 by the punching edge of a knife 101 of piercing punch 10.After punching, each of punching 101 rear portion of the edge of a knife is squeezed
Section is pressed also to enter in punching hole.
Upper die holder 1 continues to move down, and the material of the hole inner wall after the first 102 pairs of extruded segment punching squeezes, and makes hole inner wall
On material under the extruding of the first extruded segment 102 to fracture layer region extend；103 pairs of subsequent second extruded segment squeeze through first
The material that section 102 squeezes the hole inner wall of refine is squeezed again, makes the material on the inner wall of hole in the second extruded segment 103
Extend under extruding to fracture layer region；The material of 104 pairs of hole inner walls through the extruding refine of the second extruded segment 103 of third extruded segment
Continue to squeeze, extends the material on the inner wall of hole under the extruding of third extruded segment 104 to fracture layer region, make euphotic belt
Extend.The extruding of device to hole inner wall is completed to whole extruded segments, upper die holder 1 moves up, and drive piercing punch 10 is whole to move up, then
The secondary reverse movement device to hole inner wall using extruded segment carries out reverse extrusion, improves the straightness of inner hole wall, until entire punching convex
Mould 10 exits part 9.Upper die holder continues to move up, and spring part resets, and stripper 5 is driven to disengage from part 9, discharges part 9.
Hole class blanking die of the invention, using material volume invariance principle in the punching edge of a knife that piercing punch 10 has been determined
101 diameter d1 and the diameter (being d2, d3, d4 in this implementation column 1) of each extruded segment, using multiple extruded segments to be processed zero
Hole inner wall after the punching of part carries out refine step by step, and the ratio for making punching hole wall light strip length account for stamping overall thickness obtains
Increase, bright strip length up to material thickness 80%~90%.
It is punched hole Nell wall using blanking die of the invention, the burr of stamping can be effectively reduced.Piercing punch
The outer end of multiple extruded segments preferably uses rounded structure, when carrying out refine to hole wall, acts on the extruding on piercing punch
Power, which can be shared, to be reached in multiple extruded segments, so when reducing punching stamping punching hole wall to the mill of piercing punch
Damage, extends die life.Blanking die of the invention has the advantages of primary punching, multiple tracks refine, that is, is punched and more
Road refine only needs to carry out a blanking movement and achieves that, plate thickness ratio shared by the hole wall euphotic belt being more once punched
Height, simple compared with the hole location mould structure being repeatedly punched, hole location punching is accurate.
Blanking die of the invention can be applied in the production of the punching on air bag part.On air bag part
Punching is mainly used for installing the ignition cap of air bag device, and ignition cap is igniting blasting sodium azide (NaN3) and potassium nitrate
(KNO3) reacting generates the main device of nitrogen.The euphotic belt of elongated pore makes the inner wall in hole and the side of ignition cap installation position
Wall contact area increases, and keeps ignition cap installation more firm, reduces the risk that ignition cap falls off from air-bag module, guarantees
The normal use of air bag, and then guarantee passenger in the personal safety in emergency circumstances of burst.
Embodiment 2:
On the basis of embodiment 1, a kind of hole class blanking method, includes the following steps:
Part 9 to be processed is placed on specified position to be processed by step S1；
Step S2, upper die holder 1 move down under the drive of the upper table of lathe, drive under 10 entirety of piercing punch
It moves, parts to be processed 9 is punched using the punching edge of a knife 101 on the head of piercing punch 10, it is thick to complete opening for hole；
Step S3, upper die holder 1 continue to move down, and the extruded segment on 10 head of piercing punch successively extruded hole inner wall makes hole inner wall
Material extend to disconnected column layer region；
Step S4, piercing punch 10 enter in the die hole 61 of punching concave die 6 engaged therewith, until whole extruded segments are complete
The extruding of hole pairs inner wall, then upper die holder 1 is moved up with the upper table of lathe, drives piercing punch 10 is whole to move up,
Reverse extrusion is carried out using the reverse movement device to hole inner wall of extruded segment again, until entire piercing punch 10 exits part.
Using this blanking method, the hole gone out, inner wall has euphotic belt accounting height, the few advantage of burr.Pass through extruded segment
Device to hole inner wall carries out extruding refine, meanwhile, piercing punch is carried out when exiting part 9 by inner wall of the extruded segment to punching hole
Reversed refine, to realize in the case where meeting punching hole wall euphotic belt and accounting for the whole maximum situation of stamping thickness ratio, inner hole wall
Straightness requires also to be improved.
Telescopic force application part 4 and stripper 5 are installed, being provided on stripper 5 allows piercing punch certainly on upper die holder 1
Through-hole by the perforation passed through, in step s 2, during 10 entirety of piercing punch moves down, stripper 5 first touches to be added
The part 9 of work is pressed on stripper 5 on part 9 to be processed, punching convex by force application part 4 to the thrust of stripper 5
After mould 10 passes through the through-hole on stripper 5, part 9 is punched by being punched the edge of a knife 101.
The rear portion that the edge of a knife 101 is punched on piercing punch 10 is provided with three sections of extruded segments, and being followed successively by diameter from front to back is d2
The first extruded segment 102, the second extruded segment 103 that diameter is d3, diameter be d4 third extruded segment 104, the punching edge of a knife 101
Diameter is d1, and the diameter of the die hole 61 of punching concave die 6 is d7, also, d1 < d2 < d3 < d4 < d7；Step S3 includes walking as follows again
It is rapid:
Step T1, upper die holder 1 continue to move down, and the material of the hole inner wall after the first 102 pairs of extruded segment punching squeezes, and make
Material on the inner wall of hole extends under the extruding of the first extruded segment 102 to fracture layer region；
The material of step T2, the hole inner wall that the second 103 pairs of extruded segment squeezes refine through the first extruded segment 102 squeeze
Pressure extends the material on the inner wall of hole under the extruding of the second extruded segment 103 to fracture layer region；
The material of step T3,104 pairs of hole inner walls that refine is squeezed through the second extruded segment 103 of third extruded segment squeeze
Pressure extends the material on the inner wall of hole under the extruding of third extruded segment 104 to fracture layer region.
Chip removal resigning is equipped between the punching edge of a knife 101 and the first extruded segment 102 and between two adjacent extruded segments
Slot, the material on the inner wall of hole extends under the extruding of each section of extruded segment to fracture layer region, and enters chip removal recessing groove.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effects carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this
Invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair
Within bright protection scope.
Claims (14)
1. a kind of hole class blanking die, it is characterised in that:
Including upper mold (100) and lower die (200)；
The upper mold (100) is suitable for carrying out punching shaping to plate class part；
The lower die (200) be suitable for support plate class part, and with the upper mold (100) complete setting.
2. class blanking die in hole according to claim 1, it is characterised in that:
The upper mold (100) includes:
Upper die holder (1),
The piercing punch (10) being fixedly connected with upper die holder (1), moves down and moves up jointly with upper die holder (10)；The piercing punch
(10) head is the punching edge of a knife (101), and the rear portion of the punching edge of a knife (101) is provided at least one section of extruded segment, for by rushing
The hole inner wall that cutter edge (101) is punched out carries out extruding refine, and the diameter of extruded segment is greater than the diameter d1 of the punching edge of a knife.
3. class blanking die in hole according to claim 2, it is characterised in that:
The lower die (200) includes:
Lower die holder (8),
The punching concave die (6) being fixedly connected with lower die holder (8), it is the die hole (61) of d7 that punching concave die (6), which has diameter, and
And the diameter d7 of die hole (61) is greater than the diameter of extruded segment.
4. class blanking die in hole according to claim 3, it is characterised in that: be punched the edge of a knife on the piercing punch (10)
(101) rear portion is provided with three sections of extruded segments, and being followed successively by diameter from front to back is the first extruded segment (102) of d2, diameter d3
The second extruded segment (103), the third extruded segment (104) that diameter is d4, also, d1 < d2 < d3 < d4 < d7.
5. class blanking die in hole according to claim 4, it is characterised in that: the punching edge of a knife (101) is total with three sections of extruded segments
Axis setting, and it is punched the excircle of the edge of a knife (101) and the excircle of three sections of extruded segments is located on the same inverted conical face,
The cone angle in the inverted conical face is 60 °~80 °.
6. class blanking die in hole according to claim 4, it is characterised in that: third extruded segment on the piercing punch (10)
(104) rear portion is additionally provided with the chip removal resigning section (105) that diameter is d5, and d5 < d1 < d2 < d3 < d4 < d7.
7. class blanking die in hole according to claim 4, it is characterised in that: the punching edge of a knife (101) and the first extruded segment
(102) chip removal recessing groove is equipped between and between two adjacent extruded segments, chip removal recessing groove is setting in the punching edge of a knife
(101) sunk area between two between the first extruded segment (102) or adjacent extruded segments, also, chip removal recessing groove
Volume be 1.5 times of corresponding extruded segment extrded material volume.
8. class blanking die in hole according to claim 2, it is characterised in that: the upper mold further includes stripper (5) and applies
Power component (4), the through-hole of perforation is provided on the stripper (5), and the piercing punch (10) passes through the described logical of stripper (5)
Hole, and stripper (5) is connected on upper die holder (1) by the force application part (4), and force application part (4) is scalable, force section
Part (4) is used to for stripper (5) to be pressed on the part (9) to punching.
9. class blanking die in hole according to claim 8, it is characterised in that: the upper mold further includes upper padding plate (2) and upper
Fixed plate (3), the piercing punch (10) are fixed on upper mounted plate (3), and upper mounted plate (3) passes through upper padding plate (2) and upper mold
Seat (1) connection；The rear portion of the chip removal resigning section (105) of the piercing punch (10) is the main paragraph (106) that diameter is d6, and
And d5 < d1 < d2 < d3 < d4 < d6 < d7.
10. class blanking die in hole according to claim 3, it is characterised in that: the lower die further includes lower bolster (7), punching
Hole cavity plate (6) is connect by lower bolster (7) with lower die holder (8), is provided on lower bolster (7) and lower die holder (8) recessed with punching
The coaxial through-hole of die hole (61) on mould (6).
11. a kind of hole class blanking method, which comprises the steps of:
Part (9) to be processed is placed on specified position to be processed by step S1；
Step S2, upper die holder (1) move down under the drive of the upper table of lathe, drive under piercing punch (10) entirety
It moves, parts to be processed (9) is punched using the punching edge of a knife (101) on the head of piercing punch (10), it is thick to complete opening for hole；
Step S3, upper die holder (1) continue to move down, and the extruded segment on piercing punch (10) head successively extruded hole inner wall makes hole inner wall
Material extend to disconnected column layer region；
Step S4, piercing punch (10) enter in the die hole (61) of punching concave die engaged therewith (6), until whole extruded segments
The extruding of device to hole inner wall is completed, then upper die holder (1) is moved up with the upper table of lathe, drives piercing punch (10) whole
It moves up, carries out reverse extrusion using the reverse movement device to hole inner wall of extruded segment again, until entire piercing punch (10) exit zero
Part.
12. class blanking method in hole according to claim 11, it is characterised in that: be equipped on upper die holder (1) telescopic
Force application part (4) and stripper (5) are provided with the through-hole for the perforation for allowing piercing punch to pass freely through on stripper (5), in step
In S2, during piercing punch (10) integrally moves down, stripper (5) first touches part to be processed (9), passes through force section
Part (4) is pressed on stripper (5) on part to be processed (9) thrust of stripper (5), and piercing punch (10) is passed through and unloaded
After through-hole on flitch (5), part (9) is punched by being punched the edge of a knife (101).
13. class blanking method in hole according to claim 12, it is characterised in that: piercing punch is punched the edge of a knife on (10)
(101) rear portion is provided with three sections of extruded segments, and being followed successively by diameter from front to back is the first extruded segment (102) of d2, diameter d3
The second extruded segment (103), diameter be d4 third extruded segment (104), punching the edge of a knife (101) diameter be d1, punching concave die
(6) diameter of die hole (61) is d7, also, d1 < d2 < d3 < d4 < d7；Step S3 includes the following steps: again
Step T1, upper die holder (1) continue to move down, and the first extruded segment (102) squeezes the material of the hole inner wall after punching, make
Material on the inner wall of hole extends under the extruding of the first extruded segment (102) to fracture layer region；
Step T2, the second extruded segment (103) squeeze the material for the hole inner wall that refine is squeezed through the first extruded segment (102)
Pressure extends the material on the inner wall of hole under the extruding of the second extruded segment (103) to fracture layer region；
Step T3, third extruded segment (104) squeeze the material for the hole inner wall that refine is squeezed through the second extruded segment (103)
Pressure extends the material on the inner wall of hole under the extruding of third extruded segment (104) to fracture layer region.
14. class blanking method in hole according to claim 13, it is characterised in that: the punching edge of a knife (101) and the first extruded segment
(102) it is equipped with chip removal recessing groove between and between two adjacent extruded segments, the material on the inner wall of hole is in each section of extruded segment
Extruding under, to fracture layer region extend, and enter chip removal recessing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553033.3A CN109500219A (en) | 2018-12-18 | 2018-12-18 | A kind of hole class blanking die and hole class blanking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553033.3A CN109500219A (en) | 2018-12-18 | 2018-12-18 | A kind of hole class blanking die and hole class blanking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109500219A true CN109500219A (en) | 2019-03-22 |
Family
ID=65753593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811553033.3A Pending CN109500219A (en) | 2018-12-18 | 2018-12-18 | A kind of hole class blanking die and hole class blanking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109500219A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151643A (en) * | 2020-01-17 | 2020-05-15 | 杭州丰衡机电有限公司 | Intelligent processing punching device for machine case |
| CN112775622A (en) * | 2020-12-24 | 2021-05-11 | 昆山施宝得精密模具有限公司 | High-precision processing technology for hole positions of porous plates |
| CN112935072A (en) * | 2021-02-02 | 2021-06-11 | 江苏通鼎宽带有限公司 | Numerical punching die for network cabinet, numerical punching machine tool and punching screen plate for network cabinet |
| CN114210869A (en) * | 2021-10-27 | 2022-03-22 | 山东金帝精密机械科技股份有限公司 | Production method and production device for stamping retainer of angular contact bearing |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273151A (en) * | 1999-05-07 | 2000-11-15 | 日高精机株式会社 | Metal film |
| EP1103317A2 (en) * | 1999-11-26 | 2001-05-30 | VAW Aluminium AG | Method and apparatus for punching aluminium sheet metal parts |
| CN1486803A (en) * | 2003-08-01 | 2004-04-07 | 东风汽车公司 | Metal plate punching and inner extruding reinforcing process |
| CN201287162Y (en) * | 2008-09-26 | 2009-08-12 | 安徽黄山恒久链传动有限公司 | Punching male die with punching and extruding function |
| CN101530879A (en) * | 2009-02-20 | 2009-09-16 | 苏州环球链传动有限公司 | Punch Head for hole punching |
| JP2009248162A (en) * | 2008-04-09 | 2009-10-29 | Nippon Steel Corp | Punching method and punching device |
| CN203541720U (en) * | 2013-11-07 | 2014-04-16 | 西仪集团有限责任公司 | Composite universal cutter for machining |
| CN104384601A (en) * | 2014-11-17 | 2015-03-04 | 江苏上汽汽车同步器厂 | Fixed-core spline broach with burnishing teeth |
| CN104384862A (en) * | 2014-11-14 | 2015-03-04 | 上海新闵（东台）重型锻造有限公司 | Deep hole punching method and deep hole punch head thereof for large forging |
| CN104492965A (en) * | 2014-12-23 | 2015-04-08 | 无锡微研有限公司 | Composite die structure with chamfering hole |
| CN204381531U (en) * | 2015-01-28 | 2015-06-10 | 电光防爆科技股份有限公司 | The shaping push broach of burnishing-in and burnishing-in shaped device |
| CN205587510U (en) * | 2016-04-18 | 2016-09-21 | 安徽亚联冲剪机床制造有限公司 | Shearing and punching machine's lower mould that punches a hole is united to hydraulic pressure |
| CN106734502A (en) * | 2016-11-25 | 2017-05-31 | 安特(苏州)精密机械有限公司 | A kind of bright high-accuracy circular port accessory punching process high |
| CN107538072A (en) * | 2016-06-27 | 2018-01-05 | 东风（十堰）精工齿轮有限公司 | A kind of active roller gear and rear side gear copper sleeve inner hole pressurizing unit |
| CN209680889U (en) * | 2018-12-18 | 2019-11-26 | 常州工利精机科技有限公司 | A kind of pressurized tank body opening class blanking die |
-
2018
- 2018-12-18 CN CN201811553033.3A patent/CN109500219A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273151A (en) * | 1999-05-07 | 2000-11-15 | 日高精机株式会社 | Metal film |
| EP1103317A2 (en) * | 1999-11-26 | 2001-05-30 | VAW Aluminium AG | Method and apparatus for punching aluminium sheet metal parts |
| CN1486803A (en) * | 2003-08-01 | 2004-04-07 | 东风汽车公司 | Metal plate punching and inner extruding reinforcing process |
| JP2009248162A (en) * | 2008-04-09 | 2009-10-29 | Nippon Steel Corp | Punching method and punching device |
| CN201287162Y (en) * | 2008-09-26 | 2009-08-12 | 安徽黄山恒久链传动有限公司 | Punching male die with punching and extruding function |
| CN101530879A (en) * | 2009-02-20 | 2009-09-16 | 苏州环球链传动有限公司 | Punch Head for hole punching |
| CN203541720U (en) * | 2013-11-07 | 2014-04-16 | 西仪集团有限责任公司 | Composite universal cutter for machining |
| CN104384862A (en) * | 2014-11-14 | 2015-03-04 | 上海新闵（东台）重型锻造有限公司 | Deep hole punching method and deep hole punch head thereof for large forging |
| CN104384601A (en) * | 2014-11-17 | 2015-03-04 | 江苏上汽汽车同步器厂 | Fixed-core spline broach with burnishing teeth |
| CN104492965A (en) * | 2014-12-23 | 2015-04-08 | 无锡微研有限公司 | Composite die structure with chamfering hole |
| CN204381531U (en) * | 2015-01-28 | 2015-06-10 | 电光防爆科技股份有限公司 | The shaping push broach of burnishing-in and burnishing-in shaped device |
| CN205587510U (en) * | 2016-04-18 | 2016-09-21 | 安徽亚联冲剪机床制造有限公司 | Shearing and punching machine's lower mould that punches a hole is united to hydraulic pressure |
| CN107538072A (en) * | 2016-06-27 | 2018-01-05 | 东风（十堰）精工齿轮有限公司 | A kind of active roller gear and rear side gear copper sleeve inner hole pressurizing unit |
| CN106734502A (en) * | 2016-11-25 | 2017-05-31 | 安特(苏州)精密机械有限公司 | A kind of bright high-accuracy circular port accessory punching process high |
| CN209680889U (en) * | 2018-12-18 | 2019-11-26 | 常州工利精机科技有限公司 | A kind of pressurized tank body opening class blanking die |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151643A (en) * | 2020-01-17 | 2020-05-15 | 杭州丰衡机电有限公司 | Intelligent processing punching device for machine case |
| CN111151643B (en) * | 2020-01-17 | 2021-07-23 | 杭州丰衡机电有限公司 | Intelligent processing punching device for machine case |
| CN112775622A (en) * | 2020-12-24 | 2021-05-11 | 昆山施宝得精密模具有限公司 | High-precision processing technology for hole positions of porous plates |
| CN112935072A (en) * | 2021-02-02 | 2021-06-11 | 江苏通鼎宽带有限公司 | Numerical punching die for network cabinet, numerical punching machine tool and punching screen plate for network cabinet |
| CN112935072B (en) * | 2021-02-02 | 2023-02-17 | 江苏通鼎宽带有限公司 | Numerical punching die for network cabinet, numerical punching machine tool and punching screen plate for network cabinet |
| CN114210869A (en) * | 2021-10-27 | 2022-03-22 | 山东金帝精密机械科技股份有限公司 | Production method and production device for stamping retainer of angular contact bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109500219A (en) | A kind of hole class blanking die and hole class blanking method | |
| CN209680889U (en) | A kind of pressurized tank body opening class blanking die | |
| CN101543866A (en) | Precise stamping machine | |
| CN103920808A (en) | Progressive-die forming die for automobile suspension control arm lower piece | |
| CN203764734U (en) | Fine-blanking extrusion die of star wheel of clutch | |
| CN106825194A (en) | Crowded formula is cut without gear ring fine device and method | |
| CN203565614U (en) | Stub bar punching structure of hardware stamping die | |
| CN102601217B (en) | Warm punching device of braking flat-hole pin | |
| CN202861176U (en) | Gasket stamping mould of compressor high-pressure cylinder | |
| CN109967612A (en) | A kind of car roof rear cross part stamping die | |
| CN202061989U (en) | Single-die double-piece forming die with carrier-free support | |
| CN104438949A (en) | Train damping bracket machining technology | |
| CN204412904U (en) | A kind of preformed drift of punching flanging bore on high-strength steel sheet | |
| CN103658382A (en) | Stretching-extruding-trimming composite die for shell | |
| CN105127227A (en) | Aluminum-alloy hot extrusion mold for solid sectional materials | |
| CN202779476U (en) | Punch forming die for steel plate gear ring of anti-lock braking system (ABS) of automobile | |
| CN204867170U (en) | Anticollision roof beam punching press waste material ejecting mechanism | |
| CN204657375U (en) | Cold extrusion combined die | |
| CN105149423A (en) | Orifice punching die of holder | |
| CN104690155B (en) | Segmentation cutting type drift and process for stamping thereof | |
| CN207043156U (en) | A kind of external splines forming die structure | |
| CN204974948U (en) | Holder is towards fenestra mould | |
| CN201455115U (en) | Combined die | |
| CN214391991U (en) | Convex hull forming mechanism | |
| CN204396686U (en) | A kind of Blanking mould of automobile exhaust system catalyst converter end cap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |