CN102756247A - Once fine blanking forming method for thick plate disc - Google Patents
Once fine blanking forming method for thick plate disc Download PDFInfo
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- CN102756247A CN102756247A CN2012102666520A CN201210266652A CN102756247A CN 102756247 A CN102756247 A CN 102756247A CN 2012102666520 A CN2012102666520 A CN 2012102666520A CN 201210266652 A CN201210266652 A CN 201210266652A CN 102756247 A CN102756247 A CN 102756247A
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Abstract
The invention provides a once fine blanking forming method for a thick plate disc. The method comprises the following steps of: 1) preparation of equipment, raw materials and upper and lower once fine blanking forming dies; and 2) once fine blanking forming. The step 2) comprises the following steps that: 1, the upper and lower once fine blanking forming dies are arranged on an upper tabletop and a lower tabletop of a fine blanking machine respectively, and when a fine blanking mold is at an opening position, a bar stock is fed to a fine blanking station; (2) the fine blanking machine is started, and a lower workbench of the fine blanking machine moves upwards to apply blanking force FS to a female die, a round hole male die and an irregularly-shaped hole male die, apply blank holding force FR to a dowel bar, a round knock-out pin and an irregularly-shaped knock-out pin and apply back pressure FG to the knock-out pins; and 3, a lower workbench of the fine blanking machine moves downwards, a pressure plate withdraws the cut bar stock from a punch die under the action of the blank holding force FR, and a pushing plate ejects a thick plate disc part from the female die under the action of the back pressure FG to obtain the formed thick plate disc part. The method is applied to batch production, and has the characteristics of operational simplicity, high efficiency, cost saving and stable quality.
Description
Technical field
The present invention relates to the part processing field, be specifically related to fine-punching formation method of a kind of slab disk.
Background technology
Disk is a kind of flower-shaped metallic part in the extensive use scaffold.This part material is SS400 or other mild steel, and hot rolling or cold rolling steel plate, part thickness are 8-12mm, and the hole partition is thin, be about material thick 60%.This part is had relatively high expectations to cross section quality, euphotic belt>75%, and irregularly-shaped hole and outline do not allow and tear, and non-perpendicularity and flatness also have higher requirement.Therefore such part needs the cross section quality of strict control part aborning, guarantees flatness and non-perpendicularity.Because the developing rapidly of building trade, the demand of disk is big, in addition, and in national defense industry and automobile and other industries, like various weaponrys such as tank, panzer, fighter plane, aerospace industry also can be used the structural member of similar disc thickness and shape in addition.Therefore need a kind of steady quality, cost is low, efficient is high, satisfy the manufacturing process of producing in batches.
Traditional slab processing method has:
1, casting.Defective common during casting has: pore, scab, burning into sand, sand holes, buckle, cold shut, misrun etc., and defective causes element precision poor easily, and weak strength is in the instability of quality down in enormous quantities.
2, machined.Though machining can obtain the better products quality, its cost is too high, and production efficiency is low under producing in enormous quantities.
3, line cutting.Though the line cutting can obtain cross section quality and performance preferably, production efficiency is low.
4, Pu Chong.General punch die tool gap is big, cannot say for sure to demonstrate,prove the requirement of section euphotic belt, and is uniaxial pressure, and product plane degree and non-perpendicularity also are difficult to guarantee.
5, earlier in advance towards semi-finished product, the multiple operation associated methods of precision form again.Blanking pressure and mould strength increase with stamping-out part thickness of slab; Fine-punching formation of thick-plate parts has higher requirement to smart impact machine gross pressure and mould strength; Therefore adopt the substep manufacturing process more, generally adopt elder generation in advance towards semi-finished product, again precision form; This method guarantees product quality, but multiple operation stamping-out shaping production cost is high.
Summary of the invention
The technical problem that the present invention will solve is: provide a kind of slab disk a fine-punching formation method, can be used in production in enormous quantities.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be: fine-punching formation method of a kind of slab disk, and it is characterized in that: it may further comprise the steps:
1) preparation:
The preparation of equipment: prepare hydraulic pendulum plate shears, the smart impact machine of fully automatic hydraulic, abrasive belt surface grinder; Wherein hydraulic pendulum plate shears cut the material precision≤± 0.5mm, the smart impact machine gross pressure＞5000KN of fully automatic hydraulic;
Raw-material preparation: prepare the desired cold rolling or hot rolled steel plate of slab disk part; Steel plate thickness is identical with slab disk part thickness; Steel plate is handled through spheroidizing, and the back backgauge size and the cutting edge gap of adjustment hydraulic pendulum plate shears compress plate; Plate is cut into billot, cut the material precision≤± 0.5mm;
The preparation of a upper and lower mould of fine-punching formation:
The preparation of a, a fine-punching formation counterdie: the die cavity of die is identical with the outline of slab disk part, the outline of die and die frame interference fits, and die is provided with oil groove and tapped through hole; The end surface shape of push pedal is identical with slab disk part bottom surface; Push pedal outline and die matched in clearance; Monolateral fit clearance 3-5 μ m, push pedal endoporus and irregularly-shaped hole and circular hole punch, irregularly-shaped hole punch matched in clearance, monolateral fit clearance 3-5 μ m; Push pedal is provided with screwed hole, and push pedal adopts screw to be connected with the ejector hanging platform;
The preparation of b, a fine-punching formation patrix: the lower surface shape of punch-die is identical with slab disk part end face, and punch-die be provided with slab disk part on identical circular hole and irregularly-shaped hole; The outline of punch-die is that benchmark event cooperates with the die, and the circular hole of punch-die and irregularly-shaped hole and circle are made bar, abnormity is beaten the bar matched in clearance, and the upper surface of punch-die is provided with screwed hole; Punch-die cooperates with platen gap, monolateral fit clearance 3-5 μ m;
2) fine-punching formation:
1. the upper and lower mould of fine-punching formation is installed in respectively on the upper and lower table top of smart impact machine, fine blanking die is delivered to billot smart in station when the enable possition;
2. start smart impact machine, the lower table of smart impact machine moves upward, and die, circular hole punch, irregularly-shaped hole punch are applied blanking pressure F
S, transmission rod, circle are made bar, special-shaped made bar and apply pressure-pad-force F
R, the air exercise bar applies counter-pressure F
G, transmission rod with beat on bar is evenly distributed on upper and lower mould of fine-punching formation along circumference respectively; At blanking pressure F
SWith pressure-pad-force F
REffect under, the pressing plate of the die frame of fine blanking die, die, push pedal, circular hole punch, irregularly-shaped hole punch and fine blanking die, punch-die, circle are made bar, special-shaped made bar billot is compressed simultaneously; The lower table of smart impact machine continues to move upward blanking pressure F
SGreater than pressure-pad-force F
R, counter-pressure F
GBe set at less than pressure-pad-force F
R, billot is sheared beginning; Circular hole punch, irregularly-shaped hole punch also get into punch-die when punch-die gets into die, and pressing plate is made bar with circle simultaneously, abnormity is made bar at pressure-pad-force F
RProtection down on move, push pedal is at counter-pressure F
GProtection under move down, the billot after the shearing tightly wraps on the punch-die, slab disk part is set in the die;
3. the lower table of smart impact machine moves downward, at pressure-pad-force F
REffect under, the billot after pressing plate will be sheared is backed off from punch-die, at counter-pressure F
GEffect under, push pedal ejects slab disk part from die, the slab disk part after obtaining being shaped.
Press such scheme, in the raw material set-up procedure, steel plate is handled through spheroidizing, the carbide spheroidization grade of acquisition reach in the JB/T 5074-2007 standard more than 6 grades, and case hardness is lower than HB150 after the steel plate spheroidizing, evenly the steel plate original structure.
Press such scheme, billot width=slab disk part maximum gauge+2.2* material that plate is cut into is thick.
Press such scheme, the oil groove width that is provided with in the described die is 2mm, and the degree of depth is 1mm, and oil groove is arranged on feed direction on one side, and with concave die cavity 8mm at interval, outline is identical with the outline of slab disk part.
Press such scheme, the outline of said punch-die is that benchmark event cooperates with the die, cooperates monolateral gap to get the thick 5-5.5 of billot ‰; The circular hole of punch-die and irregularly-shaped hole and circle are made bar, abnormity is beaten the bar matched in clearance, cooperate monolateral gap to get 0.06-0.1mm.
Press such scheme, described die, punch-die, circular hole punch, irregularly-shaped hole punch are selected the V4E material for use, are heat-treated to HRC61-63, and degaussing is handled and surface plating TiCN.
Beneficial effect of the present invention is:
1, the steel plate spheroidizing is handled and has been reduced hardness, thereby has reduced the blanking pressure of part fine-punching formation, is convenient to fine-punching formation one time; One time the fine-punching formation mould is selected suitable gap, guarantees the dimensional accuracy and the cross section quality of formation of parts.
2, the punch in the mould, punch-die, die are selected suitable material, heat treatment and process for treating surface for use, compare with traditional materials such as Cr12MoV, improve mould strength and life-span greatly.
3, be provided with oil groove in the die, the essence that not only stores on the mould is dashed oil, saves resource, and plays lubrication to being about to the smart billot part stamping-out zone that dashes, and improves material shear surface quality.
4, this method is applicable to production in enormous quantities, have simple to operate, efficient is high, practice thrift cost, stay-in-grade characteristics.
Description of drawings
Fig. 1 is the structural representation of slab disk commonly used;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is a slab disk forming technology flow chart;
Fig. 4 is a fine-punching formation mode structure of a slab disk sketch map;
Fig. 5 is the structural representation of die;
Fig. 6 is the structural representation of punch-die;
Fig. 7 is the B-B cutaway view of Fig. 6;
Fig. 8 is the structural representation of push pedal;
Among the figure: 1. slab disk part, 1-1. irregularly-shaped hole, 1-2. circular hole, 2. billot; 3. die frame, 4. die, 4-1. oil groove, 4-2. tapped through hole; 5. push pedal, 6. the irregularly-shaped hole punch, 7. make bar, 8. circular hole punch, 9. ejector hanging platform, 10. transmission rod; 11. circle is made bar, 12. abnormity are made bar, 13. punch-dies, 14. pressing plates.
The specific embodiment
Fig. 1 is the structural representation of slab disk commonly used, and Fig. 2 is the A-A cutaway view of Fig. 1, is provided with circular hole 1-2 in the middle of the slab disk part 1, is provided with symmetrical irregularly-shaped hole 1-1 around circular hole 1-2, and the bottom surface of slab disk part 1 is identical with the end face shape.Wherein the material of disk 1 is SS400, and thickness is 9mm, external diameter 123.5mm, and the hole partition is material thick 60%.Part is had relatively high expectations to cross section quality, euphotic belt>75%, and irregularly-shaped hole and outline do not allow and tear non-perpendicularity 0.025mm, flatness 0.3mm.
Fig. 3 is a slab disk forming technology flow chart, and it may further comprise the steps:
1) preparation:
The preparation of equipment: prepare hydraulic pendulum plate shears, the smart impact machine of fully automatic hydraulic, abrasive belt surface grinder; Wherein hydraulic pendulum plate shears cut the material precision≤± 0.5mm (present embodiment for ± 0.5mm), the smart impact machine gross pressure＞5000KN (present embodiment is 6300KN) of fully automatic hydraulic.
Raw-material preparation: prepare the desired cold rolling or hot rolled steel plate of slab disk part, steel plate thickness is identical with slab disk part thickness.Steel plate is handled through spheroidizing; The carbide spheroidization grade that obtains reach in the JB/T 5074-2007 standard more than 6 grades; And case hardness is lower than HB150 (present embodiment carbide spheroidization class 6 level, case hardness is lower than HB120) after the steel plate spheroidizing, evenly the steel plate original structure.The back backgauge size and the cutting edge gap of adjustment hydraulic pendulum plate shears; Compress plate, plate is cut into billot (like 2 among Fig. 4), billot width=slab disk part maximum gauge+2.2* material is thick; Cut the material precision≤± 0.5mm (the thick 9mm of present embodiment cut deal disk part; Disk maximum gauge 123.5mm, the billot width is 143.5mm, cuts material precision ± 0.5mm).
The preparation of a upper and lower mould of fine-punching formation, as shown in Figure 4:
The preparation of a, a fine-punching formation counterdie: the die cavity of die 4 is identical, as shown in Figure 5 with the outline of slab disk part 1, the outline of die 4 and die frame 5 interference fits, fit clearance H7n6; Die 4 is provided with oil groove 4-1 and tapped through hole 4-2 (present embodiment is the 4-M12 tapped through hole); Oil groove 4-1 width is 2mm, and the degree of depth is 1mm, and oil groove is arranged on feed direction on one side; With concave die cavity interval 8mm, outline is identical with the outline of slab disk part; The end surface shape of push pedal 5 is identical with slab disk part 1 bottom surface; As shown in Figure 8, push pedal 5 outlines and die 4 matched in clearance, monolateral fit clearance 3-5 μ m; Push pedal 5 endoporus and irregularly-shaped hole and circular hole punch 8, irregularly-shaped hole punch 6 matched in clearance; Monolateral fit clearance 3-5 μ m, push pedal 5 is provided with screwed hole (present embodiment is 4-M4 and 2-M5 screwed hole), and push pedal 5 adopts screw to be connected with ejector hanging platform 9;
The preparation of b, a fine-punching formation patrix: the lower surface shape of punch-die 13 is identical, as shown in Figure 6 with slab disk part 1 end face, and Fig. 7 is the B-B cutaway view of Fig. 6, punch-die 13 be provided with slab disk part 1 on identical circular hole and irregularly-shaped hole; The outline of punch-die 13 is that benchmark event cooperates with die 4, cooperate monolateral gap get the thick 5-5.5 of billot ‰ (present embodiment for material thick 5.5 ‰); The circular hole of punch-die 13 and irregularly-shaped hole and circle are made bar 11, abnormity is beaten bar 12 matched in clearance, cooperate monolateral gap to get 0.06-0.1mm; The upper surface of punch-die 13 is provided with screwed hole (present embodiment is 4-M16 and 4-M8 screwed hole).Punch-die cooperates with platen gap, monolateral fit clearance 3-5 μ m.
Described die, punch-die, circular hole punch, irregularly-shaped hole punch are selected the V4E material for use, are heat-treated to HRC61-63, and degaussing is handled and surface plating TiCN.
2) fine-punching formation:
1. the upper and lower mould of fine-punching formation is installed in respectively on the upper and lower table top of smart impact machine, fine blanking die is delivered to billot smart in station when the enable possition;
2. start smart impact machine, the lower table of smart impact machine moves upward, and die 4, circular hole punch 8, irregularly-shaped hole punch 6 are applied blanking pressure F
S, transmission rod 10, circle are made bar 11, special-shaped made bar 12 and apply pressure-pad-force F
R, air exercise bar 7 applies counter-pressure F
G, transmission rod 10 with beat on bar 7 is evenly distributed on upper and lower mould of fine-punching formation along circumference respectively, general number is that 3-9 is individual; At blanking pressure F
SWith pressure-pad-force F
REffect under, the pressing plate 14 of the die frame 3 of fine blanking die, die 4, push pedal 5, circular hole punch 8, irregularly-shaped hole punch 6 and fine blanking die, punch-die 13, circle are made bar 11, are special-shapedly made bar 12 billot 2 is compressed simultaneously; The lower table of smart impact machine continues to move upward blanking pressure F
SGreater than pressure-pad-force F
R, counter-pressure F
GBe set at less than pressure-pad-force F
R, billot 2 is sheared beginning; Circular hole punch 8, irregularly-shaped hole punch 6 also get into punch-die 13 when punch-die 13 gets into die 4, and pressing plate 14 and circle are made bar 11, special-shapedly made bar 12 at pressure-pad-force F simultaneously
RProtection down on move, push pedal 5 is at counter-pressure F
GProtection under move down, the billot 2 after the shearing tightly wraps on the punch-die 13, slab disk part 1 is set in the die 4;
3. the lower table of smart impact machine moves downward, at pressure-pad-force F
REffect under, the billot after pressing plate will be sheared is backed off from punch-die, at counter-pressure F
GEffect under, push pedal ejects slab disk part from die, the slab disk part after obtaining being shaped.
Slab disk part 1 euphotic belt after the shaping reaches 95%, and near 100%, irregularly-shaped hole and outline do not have to be torn, and non-perpendicularity and flatness have all reached the specification requirement of part.With traditional manufacturing process contrast, the present invention has opened up slab disk part fine-punching formation approach.
Claims (6)
1. fine-punching formation method of a slab disk, it is characterized in that: it may further comprise the steps:
1) preparation:
The preparation of equipment: prepare hydraulic pendulum plate shears, the smart impact machine of fully automatic hydraulic, abrasive belt surface grinder; Wherein hydraulic pendulum plate shears cut the material precision≤± 0.5mm, the smart impact machine gross pressure＞5000KN of fully automatic hydraulic;
Raw-material preparation: prepare the desired cold rolling or hot rolled steel plate of slab disk part; Steel plate thickness is identical with slab disk part thickness; Steel plate is handled through spheroidizing, and the back backgauge size and the cutting edge gap of adjustment hydraulic pendulum plate shears compress plate; Plate is cut into billot, cut the material precision≤± 0.5mm;
The preparation of a upper and lower mould of fine-punching formation:
The preparation of a, a fine-punching formation counterdie: the die cavity of die is identical with the outline of slab disk part, the outline of die and die frame interference fits, and die is provided with oil groove and tapped through hole; The end surface shape of push pedal is identical with slab disk part bottom surface; Push pedal outline and die matched in clearance; Monolateral fit clearance 3-5 μ m, push pedal endoporus and irregularly-shaped hole and circular hole punch, irregularly-shaped hole punch matched in clearance, monolateral fit clearance 3-5 μ m; Push pedal is provided with screwed hole, and push pedal adopts screw to be connected with the ejector hanging platform;
The preparation of b, a fine-punching formation patrix: the lower surface shape of punch-die is identical with slab disk part end face, and punch-die be provided with slab disk part on identical circular hole and irregularly-shaped hole; The outline of punch-die is that benchmark event cooperates with the die, and the circular hole of punch-die and irregularly-shaped hole and circle are made bar, abnormity is beaten the bar matched in clearance, and the upper surface of punch-die is provided with screwed hole, and punch-die cooperates with platen gap, monolateral fit clearance 3-5 μ m;
2) fine-punching formation:
1. the upper and lower mould of fine-punching formation is installed in respectively on the upper and lower table top of smart impact machine, fine blanking die is delivered to billot smart in station when the enable possition;
2. start smart impact machine, the lower table of smart impact machine moves upward, and die, circular hole punch, irregularly-shaped hole punch are applied blanking pressure F
s, transmission rod, circle are made bar, special-shaped made bar and apply pressure-pad-force F
R, the air exercise bar applies counter-pressure F
G, transmission rod with beat on bar is evenly distributed on upper and lower mould of fine-punching formation along circumference respectively; At blanking pressure F
SWith pressure-pad-force F
REffect under, the pressing plate of the die frame of fine blanking die, die, push pedal, circular hole punch, irregularly-shaped hole punch and fine blanking die, punch-die, circle are made bar, special-shaped made bar billot is compressed simultaneously; The lower table of smart impact machine continues to move upward blanking pressure F
SGreater than pressure-pad-force F
R, counter-pressure F
GBe set at less than pressure-pad-force F
R, billot is sheared beginning; Circular hole punch, irregularly-shaped hole punch also get into punch-die when punch-die gets into die, and pressing plate is made bar with circle simultaneously, abnormity is made bar at pressure-pad-force F
RProtection down on move, push pedal is at counter-pressure F
GProtection under move down, the billot after the shearing tightly wraps on the punch-die, slab disk part is set in the die;
3. the lower table of smart impact machine moves downward, at pressure-pad-force F
REffect under, the billot after pressing plate will be sheared is backed off from punch-die, at counter-pressure F
GEffect under, push pedal ejects slab disk part from die, the slab disk part after obtaining being shaped.
2. fine-punching formation method of a kind of slab disk according to claim 1; It is characterized in that: in the raw material set-up procedure; Steel plate is handled through spheroidizing; The carbide spheroidization grade that obtains reach in the JB/T 5074-2007 standard more than 6 grades, and case hardness is lower than HB150 after the steel plate spheroidizing, evenly the steel plate original structure.
3. fine-punching formation method of a kind of slab disk according to claim 1 is characterized in that: billot width=slab disk part maximum gauge+2.2* material that plate is cut into is thick.
4. fine-punching formation method of a kind of slab disk according to claim 1; It is characterized in that: the oil groove width that is provided with in the described die is 2mm; The degree of depth is 1mm; And oil groove is arranged on feed direction on one side, and with concave die cavity interval 8mm, outline is identical with the outline of slab disk part.
5. fine-punching formation method of a kind of slab disk according to claim 1 is characterized in that: the outline of said punch-die is that benchmark event cooperates with the die, cooperates monolateral gap to get the thick 5-5.5 of billot ‰; The circular hole of punch-die and irregularly-shaped hole and circle are made bar, abnormity is beaten the bar matched in clearance, cooperate monolateral gap to get 0.06-0.1mm.
6. fine-punching formation method of a kind of slab disk according to claim 1, it is characterized in that: described die, punch-die, circular hole punch, irregularly-shaped hole punch are selected the V4E material for use, are heat-treated to HRC61-63, and degaussing is handled and surface plating TiCN.
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| CN103691798A (en) * | 2013-12-13 | 2014-04-02 | 武汉华夏精冲技术有限公司 | Fine blanking molding method for reducing collapsed corner of fine-blanking piece |
| CN105014305A (en) * | 2014-04-21 | 2015-11-04 | 哈尔滨飞机工业集团有限责任公司 | Method for shaping annular thin plate with bending edge |
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| CN105014305A (en) * | 2014-04-21 | 2015-11-04 | 哈尔滨飞机工业集团有限责任公司 | Method for shaping annular thin plate with bending edge |
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| CN102756247B (en) | 2015-08-12 |
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Denomination of invention: A one-time fine blanking forming method for thick plate disc Effective date of registration: 20220629 Granted publication date: 20150812 Pledgee: Bank of China Limited Wuhan Qingshan sub branch Pledgor: WUHAN HUAXIA FINE-BLANKING TECHNOLOGY CO.,LTD. Registration number: Y2022420000207 |