CN105855354A - Chain wheel blanking forming method and device - Google Patents
Chain wheel blanking forming method and device Download PDFInfo
- Publication number
- CN105855354A CN105855354A CN201610323435.9A CN201610323435A CN105855354A CN 105855354 A CN105855354 A CN 105855354A CN 201610323435 A CN201610323435 A CN 201610323435A CN 105855354 A CN105855354 A CN 105855354A
- Authority
- CN
- China
- Prior art keywords
- die
- blanking
- blank
- punch
- tooth
- 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.)
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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
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- 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
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to the technical field of preparation of chain wheels, in particular to a chain wheel blanking forming method and device. Compared with extruding forming, the precision blanking method provided by the invention comprises the steps that a blank is pressed with a blank holder before blanking so as to prevent an inner metal plate and an outer metal plate from moving in the blanking process; and a three-way pressure stress state of a local blanking area is formed through cooperation with a small gap (the gap value is 0.5 mm) between a male die and a female die and conical protrusions on the upper surface of the female die, so that smooth plastic deformation during blanking is achieved. According to the chain wheel blanking forming method and device, the fine blanking time is 2-3 s, the machining time of chain wheels is shortened, and the method and device have the advantages that operation is easy and convenient, waste materials are fewer, vibration is small, and noise is low; and the problems of cost rising and long machining time caused by extrusion forming are avoided.
Description
Technical field
The present invention relates to sprocket wheel preparing technical field, refer in particular to a kind of sprocket wheel Blanking Shaping method and apparatus, sprocket wheel can be improved
Forming efficiency, saves material cost, improves the mechanical property of sprocket wheel.
Background technology
Sprocket wheel is widely used in drive system, and its gear-tooth strength and wear resistance seem particularly significant, and sprocket wheel generally passes through
Extruding forms the gear teeth, then improves hardness by heat treatment, and this manufacture method was both lost time, and increased again cost.
Compared with extrusion molding, patent of the present invention proposes fine blanking method, i.e. first pushes down hair before stamping-out with blank holder
Base, prevents inside and outside metal blank play in blanking process, then coordinates the small-gap suture (gap width is 0.5mm) of convex-concave intermode
And the pyramidal projections of die upper surface, form the three-dimensional compressive stress state of stamping-out regional area, it is ensured that the plasticity of stamping-out becomes
Shape realizes smoothly.Can produce strong plastic deformation in fine-edge blanking forming process, crystal grain is become elongated by compression, wherein
Crystal orientation result in and substantially hardening occurs on profile of tooth width, and the polishing machine of sprocket wheel is improved significantly.Low
Alloy carbon steel is adopted and is shaped the mechanical property that can reach to use the medium carbon alloy steel of extrusion molding in this way, not only saves
Cost, and shorten again the production time.
Summary of the invention
Patent of the present invention is for the long processing time existing for extrusion molding and relatively costly problem, it is proposed that a kind of employing
Fine processing sprocket wheel method.
The present invention uses mineral oil to be lubricant
The technological process of patent of the present invention: blanking → coating lubricating oil → fine → discharging → inspection.
The fine time of the present invention is 2-3s, shortens the time of sprocket wheel processing, has easy and simple to handle, and waste material is few, vibration
The advantages such as low, noise is little, it is to avoid the cost increase that extrusion molding is brought, and long processing time problem.
The mould structure used includes part of the upper die, part of the lower die, device for discharging and guider.
Described part of the upper die includes upper bolster, die shank, fixed plate, punch and blank holder.
Described part of the lower die includes die shoe, die block and profile of tooth die.
Described device for discharging includes ejector, push rod, backing plate and hydraulic plunger.
Described guider is made up of guide pillars and bushes, uses matched in clearance, guide pin bushing and upper bolster between guide pillars and bushes
Between use interference fit, between guide pillar and die shoe use interference fit.
Die shank is fixed in upper bolster inner chamber by fixed plate, and die shank lower end connects punch, and punch surrounding is provided with blank holder,
Blank holder is threaded connection with upper bolster.
Profile of tooth die is positioned on die shoe, and profile of tooth die surrounding is provided with die block, and die block is similarly positioned in down
On die holder.
Die shoe bottom-type intracavity is provided with backing plate, is provided with hydraulic plunger below backing plate, and the push rod above backing plate passes die shoe
It is connected with the ejector being positioned at profile of tooth die.
Described die is characterised by, die uses interference fit with die block, and the magnitude of interference is 0-0.2mm, recessed
Model cavity demoulding gradient is 4 °.
Described die is cylindrical, and thickness 5mm more than blank thickness to be pressed, body diameter is many compared with sprocket wheel maximum outside diameter
10mm, die inner surface is uniformly distributed with the inverted V-shaped tooth identical with sprocket teeth shape along the circumference, and die upper surface is circumferentially
Symmetrical pyramidal projections, projection thickness is 1.5mm, and cone angle is 30 °.
Described punch is cylindrical, and punch outer surface is uniformly distributed with the V-arrangement tooth identical with sprocket teeth shape along the circumference.
About described die block each one piece, being distributed in die both sides, circular arc radian is identical with blank, is fixed on lower mold
On seat.
Described blank holder outside dimension is identical with die, and inner surface is uniformly distributed with fall identical with sprocket teeth shape along the circumference
V-arrangement tooth, is threaded connection with upper bolster, and blank holder lower surface circumferentially symmetry is also distributed pyramidal projections, size with
Die upper surface projection is identical and position is corresponding.
Accompanying drawing explanation
Fig. 1 is fine process schematic.
Fig. 2 is blank schematic diagram.
Fig. 3 is sprocket component schematic diagram.
Fig. 4 is sprocket wheel essence blanking apparatus schematic diagram.
1-upper bolster；2-guide pin bushing；3-die shank；4-fixed plate；5-punch；6-blank holder；7-guide pillar；8-ejector；9-lower mold
Seat；10-push rod；11-backing plate；12-hydraulic plunger；13-die；14 die blocks.
Fig. 5 is cavity die structure schematic diagram.
Fig. 6 is punch structure schematic diagram.
Fig. 7 is die block structural representation.
Fig. 8 blank holder structural representation.
Detailed description of the invention
With embodiment, specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
(1) blank drawing of the present invention such as Fig. 2 such as shows, for cylinder, its diameter is equal to body diameter, and thickness is equal to chain
Wheel thickness, it is ensured that raw material is tried one's best little waste, the sprocket component after fine is cut out is as shown in Figure 3.
(2) fine sprocket wheel die assembly of the present invention is as shown in Figure 4, including upper bolster 1, guide pin bushing 2, die shank 3, fixes
Plate 4, punch 5, blank holder 6, guide pillar 7, ejector 8, die shoe 9, push rod 10, backing plate 11, hydraulic plunger 12,
Die 13, die block 14.
Cavity die structure schematic diagram is as it is shown in figure 5, cylinder, thickness 5mm more than blank, and body diameter relatively sprocket wheel is maximum
The many 10mm of external diameter, die inner surface is uniformly distributed with the inverted V-shaped tooth identical with sprocket teeth shape along the circumference, (such as Fig. 1
Shown in), before punch contacts with blank, it is pressed into blank, blank is played fixation.
(3) punch structure schematic diagram is as shown in Figure 6, and cylindrical, punch outer surface is uniformly distributed with along the circumference and sprocket teeth
The V-arrangement tooth that shape is identical.
Die 13 is fixed on die shoe 9 by bolt and die block 14.
Described guider is made up of guide pillar 7 and guide pin bushing 2, uses matched in clearance, lead between guide pillar 7 and guide pin bushing 2
Use interference fit between set 2 and upper bolster 1, between guide pillar 7 and die shoe 9, use interference fit.
Punch-die cutting edge radius is 0.5mm.
Owing to this blanking process time is short, temperature rises inconspicuous, Gu lubricant can be selected for mineral oil.
(4) implementation process is as follows:
1st step: pre-treatment
Product blank is processed into shown in Fig. 2, and after so can reducing processing, produced residue waste material, cost-effective as far as possible.
2nd step: coating lubricating oil
By coated with mineral oil on punch-die, owing to this process is short for process time, punch-die temperature rises inconspicuous, adopts
Lubricant effect can be reached with mineral oil, again can be cost-effective.
3rd step: stamping-out
Blank is fixed on die shoe 9 by die block 14, piercing punch 5 contact material in blanking process
Before, by pressure-pad-force, make blank holder that blank to be pressed on die upper surface, so that the side of blank holder pyramidal projections
Produce cross side pressure, to stop material to tear in shear zone and the horizontal mobility of metal；It is pressed into hair at blanking punch 5
While base, blank is compressed by the counter-pressure on ejector 8, and under impaction state, carries out stamping-out.
4th step: discharging
Under hydraulic plunger 12 acts on, ejector 8 is promoted to be ejected by the sprocket teeth after stamping-out, for follow-up punching work
Skill is prepared.
Claims (5)
1. a sprocket wheel Blanking Shaping device, including part of the upper die, part of the lower die, device for discharging and guiding dress
Put；Described part of the upper die includes upper bolster, die shank, fixed plate, punch and blank holder；Described part of the lower die
Including die shoe, die block and profile of tooth die；Described device for discharging include ejector, push rod, backing plate and
Hydraulic plunger；Described guider is made up of guide pillars and bushes, uses matched in clearance between guide pillars and bushes,
Use interference fit between guide pin bushing and upper bolster, between guide pillar and die shoe, use interference fit；Die shank is by fixing
Plate is fixed in upper bolster inner chamber, and die shank lower end connects punch, and punch surrounding is provided with blank holder, blank holder with
Upper bolster is threaded connection；Profile of tooth die is positioned on die shoe, and profile of tooth die surrounding is provided with die block,
Die block is similarly positioned on die shoe；Die shoe bottom-type intracavity is provided with backing plate, is provided with hydraulic pressure below backing plate
Plunger, the push rod above backing plate is connected through die shoe with the ejector being positioned at profile of tooth die, it is characterised in that:
Die uses interference fit with die block, and the magnitude of interference is 0-0.2mm, and concave die cavity demoulding gradient is 4 °；
Described die is cylindrical, and die inner surface is uniformly distributed with the inverted V-shaped identical with sprocket teeth shape along the circumference
Tooth, the most symmetrical pyramidal projections of die upper surface, projection thickness is 1.5mm, and cone angle is 30o；Institute
Stating punch is cylinder, and punch outer surface is uniformly distributed with the V-arrangement tooth identical with sprocket teeth shape along the circumference；
Described blank holder outside dimension is identical with die, and inner surface is uniformly distributed with along the circumference identical with sprocket teeth shape
Inverted V-shaped tooth, blank holder lower surface circumferentially symmetry is also distributed pyramidal projections, and size is dashed forward with die upper surface
Rise identical and position is corresponding.
2. a kind of sprocket wheel Blanking Shaping device as claimed in claim 1, it is characterised in that: described die is fixed
About plate each one piece, being distributed in die both sides, circular arc radian is identical with blank, is fixed on die shoe.
3. a kind of sprocket wheel Blanking Shaping device as claimed in claim 1, it is characterised in that: described die thickness
5mms more than blank thickness to be pressed, body diameter is compared with the many 10mm of sprocket wheel maximum outside diameter.
4. use the method that device as claimed in claim 1 carries out sprocket wheel Blanking Shaping, it is characterised in that: will
Coated with mineral oil is on punch-die, and blank is fixed on die shoe by die block, by pressure before stamping-out
Flange first pushes down blank, so that the side of blank holder pyramidal projections produces cross side pressure, prevents blanking process
Middle material tears and the horizontal mobility of metal in shear zone, while blanking punch press-in blank, and ejector
On counter-pressure blank is compressed, and under impaction state, carry out stamping-out；Coordinate convex-concave intermode small-gap suture with
And the pyramidal projections of die upper surface, form the three-dimensional compressive stress state of stamping-out regional area, it is ensured that moulding of stamping-out
Property deformation realize smoothly；Under hydraulic plunger effect, ejector is promoted to be ejected by the sprocket teeth after stamping-out, complete
Become Blanking Shaping.
5. method as claimed in claim 4, it is characterised in that: punch-die cutting edge radius is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323435.9A CN105855354A (en) | 2016-05-16 | 2016-05-16 | Chain wheel blanking forming method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323435.9A CN105855354A (en) | 2016-05-16 | 2016-05-16 | Chain wheel blanking forming method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105855354A true CN105855354A (en) | 2016-08-17 |
Family
ID=56634894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610323435.9A Pending CN105855354A (en) | 2016-05-16 | 2016-05-16 | Chain wheel blanking forming method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105855354A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894513A (en) * | 2019-03-22 | 2019-06-18 | 东莞市瑞辉机械制造有限公司 | A kind of cutter |
| CN111644506A (en) * | 2020-06-08 | 2020-09-11 | 武汉华夏精冲技术有限公司 | Female die assembly for punching thin annular tooth-shaped piece and preparation method thereof |
| CN114309238A (en) * | 2021-12-29 | 2022-04-12 | 安徽瑞荣汽车零部件有限公司 | Production process method for improving bright surface of steel back |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11207418A (en) * | 1998-01-22 | 1999-08-03 | Yukio Hirano | Press working free from burr |
| CN102039346A (en) * | 2010-10-20 | 2011-05-04 | 重庆理工大学 | Opposite teeth extruding type fine-blanking die and fine-blanking method adopting same |
| CN103567305A (en) * | 2013-11-22 | 2014-02-12 | 武汉理工大学 | Lubricating device of precisely-stamped die |
| CN103611774A (en) * | 2013-11-22 | 2014-03-05 | 武汉理工大学 | Ultrasonic-assisted fine blanking process and die |
| CN203764734U (en) * | 2014-03-28 | 2014-08-13 | 象山搏远智能科技有限公司 | Fine-blanking extrusion die of star wheel of clutch |
| CN105081105A (en) * | 2015-09-18 | 2015-11-25 | 无锡贺邦金属制品有限公司 | Fine blanking die device |
-
2016
- 2016-05-16 CN CN201610323435.9A patent/CN105855354A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11207418A (en) * | 1998-01-22 | 1999-08-03 | Yukio Hirano | Press working free from burr |
| CN102039346A (en) * | 2010-10-20 | 2011-05-04 | 重庆理工大学 | Opposite teeth extruding type fine-blanking die and fine-blanking method adopting same |
| CN103567305A (en) * | 2013-11-22 | 2014-02-12 | 武汉理工大学 | Lubricating device of precisely-stamped die |
| CN103611774A (en) * | 2013-11-22 | 2014-03-05 | 武汉理工大学 | Ultrasonic-assisted fine blanking process and die |
| CN203764734U (en) * | 2014-03-28 | 2014-08-13 | 象山搏远智能科技有限公司 | Fine-blanking extrusion die of star wheel of clutch |
| CN105081105A (en) * | 2015-09-18 | 2015-11-25 | 无锡贺邦金属制品有限公司 | Fine blanking die device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894513A (en) * | 2019-03-22 | 2019-06-18 | 东莞市瑞辉机械制造有限公司 | A kind of cutter |
| CN111644506A (en) * | 2020-06-08 | 2020-09-11 | 武汉华夏精冲技术有限公司 | Female die assembly for punching thin annular tooth-shaped piece and preparation method thereof |
| CN114309238A (en) * | 2021-12-29 | 2022-04-12 | 安徽瑞荣汽车零部件有限公司 | Production process method for improving bright surface of steel back |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160817 |
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| WD01 | Invention patent application deemed withdrawn after publication |