CN102756247B - A kind of thick plate disc fine-punching formation method - Google Patents
A kind of thick plate disc fine-punching formation method Download PDFInfo
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Abstract
The invention provides thick plate disc fine-punching formation method, comprise step: the 1) preparation of equipment, raw material and a upper and lower mould of fine-punching formation; 2) fine-punching formation: be 1. arranged on the upper and lower table top of smart impact machine respectively by a upper and lower mould of fine-punching formation, billot, when enable possition, is delivered to essence and rushed station by fine blanking die; 2. start smart impact machine, the lower table of smart impact machine moves upward, and applies blanking pressure F to die, circular hole punch, irregularly-shaped hole punch
s, to transmission rod, circle makes bar, special-shaped bar of beating applies pressure-pad-force F
r, air exercise bar applies counter-pressure F
g; 3. the lower table of smart impact machine moves downward, at pressure-pad-force F
reffect under, pressing plate by shear after billot back off from punch-die, at counter-pressure F
geffect under, thick plate disc part ejects by push pedal from die, obtain be shaped after thick plate disc part.The method be applicable to produce in enormous quantities, have simple to operate, efficiency is high, cost-saving, stay-in-grade feature.
Description
Technical field
The present invention relates to part manufacture field, be specifically related to a kind of thick plate disc fine-punching formation method.
Background technology
Disk is a kind of flower-shaped metallic part in extensive use scaffold.This part material is SS400 or other mild steel, hot rolling or cold rolling steel plate, and part thickness is 8-12mm, and hole partition is thin, is about material thick 60%.This part requires higher to cross section quality, euphotic belt >75%, and irregularly-shaped hole and outline have not allowed to tear, and non-perpendicularity and flatness also have higher requirement.Therefore such part needs the cross section quality strictly controlling part aborning, ensures flatness and non-perpendicularity.Due to developing rapidly of building trade, the demand of disk is large, in addition, in national defense industry and automobile and other industries, as various weaponry as tank, panzer, fighter plane, in addition aerospace industry also can use the structural member of similar disc thickness and shape.Therefore need that a kind of steady quality, cost are low, efficiency is high, meet the manufacturing process of batch production.
Traditional slab processing method has:
1, cast.Defect common during casting has: pore, scab, burning into sand, sand holes, buckle, cold shut, misrun etc., and defect easily causes element precision poor, and intensity is weak, unstable in lower quality in enormous quantities.
2, machined.Although machining can obtain good product quality, its cost is too high, and under production in enormous quantities, production efficiency is low.
3, Linear cut.Though Linear cut can obtain good cross section quality and performance, production efficiency is low.
4, Pu Chong.General stamping die gap is large, and be difficult to ensure the requirement of card section euphotic belt, and be uniaxial pressure, product plane degree and non-perpendicularity are also difficult to ensure.
5, first semi-finished product are rushed in advance, then the multiple operation associated methods of precision form.Blanking pressure and mould strength increase with stamping thickness of slab and increase, thick-plate parts fine-punching formation has higher requirement to smart impact machine gross pressure and mould strength, therefore many employing substep manufacturing process, general employing first rushes semi-finished product in advance, precision form again, the method ensures product quality, but multiple operation Blanking Shaping production cost is high.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of thick plate disc a fine-punching formation method, can be used in producing in enormous quantities.
The present invention for solving the problems of the technologies described above taked technical scheme is: a kind of thick plate disc fine-punching formation method, is characterized in that: it comprises the following steps:
1) preparation:
The preparation of equipment: prepare hydraulic pendulum plate shears, fully automatic hydraulic essence impact machine, abrasive belt surface grinder; Wherein hydraulic pendulum plate shears cut material precision≤0.5mm, fully automatic hydraulic essence impact machine gross pressure > 5000KN;
Raw-material preparation: prepare the cold rolling or hot rolled steel plate required by thick plate disc part, steel plate thickness is identical with thick plate disc part thickness, steel plate is through spheroidizing process, the back material stopping size of adjustment hydraulic pendulum plate shears and cutting edge radius, compress plate, be billot by plate cutting, cut 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 thick plate disc part, the outline of die and die frame interference fits, die is provided with oil groove and tapped through hole; The end surface shape of push pedal is identical with thick plate disc part bottom surface, push pedal outline and die matched in clearance, monolateral fit clearance 3-5 μm, push pedal endoporus and irregularly-shaped hole and circular hole punch, irregularly-shaped hole punch matched in clearance, monolateral fit clearance 3-5 μm, push pedal is provided with screwed hole, and push pedal and ejector hanging platform adopt screw to be connected;
The preparation of b, a fine-punching formation patrix: the lower surface shape of punch-die is identical with thick plate disc part end face, and punch-die is provided with the circular hole identical with on thick plate disc part and irregularly-shaped hole; The outline of punch-die is that benchmark event coordinates with die, and the circular hole of punch-die and irregularly-shaped hole and circle are made bar, special-shapedly beaten bar matched in clearance, and the upper surface of punch-die is provided with screwed hole; Punch-die coordinates with platen gap, monolateral fit clearance 3-5 μm;
2) fine-punching formation:
1. be arranged on the upper and lower table top of smart impact machine respectively by a upper and lower mould of fine-punching formation, billot, when enable possition, is delivered to essence and is rushed station by fine blanking die;
2. start smart impact machine, the lower table of smart impact machine moves upward, and applies blanking pressure F to die, circular hole punch, irregularly-shaped hole punch
s, to transmission rod, circle makes bar, special-shaped bar of beating applies pressure-pad-force F
r, air exercise bar applies counter-pressure F
g, transmission rod and make bar and be circumferentially evenly distributed on a upper and lower mould of fine-punching formation 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, are special-shapedly made bar and compressed by billot simultaneously; The lower table of essence impact machine continues to move upward, blanking pressure F
sbe greater than pressure-pad-force F
r, counter-pressure F
gbe set smaller than pressure-pad-force F
r, billot is sheared and is started; While punch-die enters die, circular hole punch, irregularly-shaped hole punch also enter punch-die, and pressing plate and circle make bar simultaneously, abnormity makes bar at pressure-pad-force F
rprotection under on move, push pedal is at counter-pressure F
gprotection under move down, the billot after shearing tightly wraps on punch-die, and thick plate disc part is set in die;
3. the lower table of smart impact machine moves downward, at pressure-pad-force F
reffect under, pressing plate by shear after billot back off from punch-die, at counter-pressure F
geffect under, thick plate disc part ejects by push pedal from die, obtain be shaped after thick plate disc part.
By such scheme, in raw material set-up procedure, steel plate is through spheroidizing process, and the carbide spheroidization grade of acquisition reaches more than 6 grades in JB/T 5074-2007 standard, and steel plate spheroidizing rear surface hardness is lower than HB150, uniform steel sheet original structure.
By such scheme, the billot width=thick plate disc part maximum gauge+2.2* become by plate cutting expects thick.
By such scheme, the oil groove width arranged in described die is 2mm, and the degree of depth is 1mm, and oil groove is arranged on feed direction, and concave die cavity interval 8mm, and outline is identical with the outline of thick plate disc part.
By such scheme, the outline of described punch-die is that benchmark event coordinates with die, coordinates 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, are special-shapedly beaten bar matched in clearance, coordinate monolateral gap to get 0.06-0.1mm.
By such scheme, V4E material selected by described die, punch-die, circular hole punch, irregularly-shaped hole punch, is heat-treated to HRC61-63, and degaussing process and plated surface TiCN.
Beneficial effect of the present invention is:
1, the process of steel plate spheroidizing reduces hardness, thus reduces the blanking pressure of part fine-punching formation, is convenient to a fine-punching formation; One time fine-punching formation mould selects suitable gap, ensures dimensional accuracy and the cross section quality of formation of parts.
2, the punch in mould, punch-die, die select suitable material, heat treatment and process for treating surface, compared with the material such as traditional Cr12MoV, greatly improve mould strength and life-span.
3, be provided with oil groove in die, not only store the essence punching oil on mould, saving resource, and lubrication is played to the billot part blanking area being about to essence punching, improve material shear surface quality.
4, the method be applicable to produce in enormous quantities, have simple to operate, efficiency is high, cost-saving, stay-in-grade feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional thick plate disc;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is thick plate disc forming technology flow chart;
Fig. 4 is thick plate disc fine-punching formation mode structure schematic diagram;
Fig. 5 is the structural representation of die;
Fig. 6 is the structural representation of punch-die;
Fig. 7 is the B-B sectional view of Fig. 6;
Fig. 8 is the structural representation of push pedal;
In figure: 1. thick plate disc 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. irregularly-shaped hole punch, 7. make bar, 8. circular hole punch, 9. ejector hanging platform, 10. transmission rod, 11. circles make bar, 12. abnormity make bar, 13. punch-dies, 14. pressing plates.
Detailed description of the invention
Fig. 1 is the structural representation of conventional thick plate disc, and Fig. 2 is the A-A sectional view of Fig. 1, is provided with circular hole 1-2 in the middle of thick plate disc part 1, and be provided with symmetrical irregularly-shaped hole 1-1 around circular hole 1-2, the bottom surface of thick plate disc part 1 is identical with top surface shape.Wherein the material of disk 1 is SS400, and thickness is 9mm, external diameter 123.5mm, and hole partition is material thick 60%.Part requires higher to cross section quality, euphotic belt >75%, and irregularly-shaped hole and outline have not allowed to tear, non-perpendicularity 0.025mm, flatness 0.3mm.
Fig. 3 is thick plate disc forming technology flow chart, and it comprises the following steps:
1) preparation:
The preparation of equipment: prepare hydraulic pendulum plate shears, fully automatic hydraulic essence impact machine, abrasive belt surface grinder; Wherein hydraulic pendulum plate shears cut material precision≤0.5mm (the present embodiment is 0.5mm), fully automatic hydraulic essence impact machine gross pressure > 5000KN (the present embodiment is 6300KN).
Raw-material preparation: prepare the cold rolling or hot rolled steel plate required by thick plate disc part, steel plate thickness is identical with thick plate disc part thickness.Steel plate is through spheroidizing process, the carbide spheroidization grade obtained reaches more than 6 grades in JB/T 5074-2007 standard, and steel plate spheroidizing rear surface hardness is lower than HB150 (the present embodiment carbide spheroidization class 6 level, case hardness is lower than HB120), uniform steel sheet original structure.The back material stopping size of adjustment hydraulic pendulum plate shears and cutting edge radius, compress plate, it is billot (as 2 in Fig. 4) by plate cutting, billot width=thick plate disc part maximum gauge+2.2* expects thick, cut material precision≤0.5mm (thick 9mm of the present embodiment cut deal disc parts, disk maximum gauge 123.5mm, 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 with the outline of thick plate disc part 1, as shown in Figure 5, 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 (the present embodiment is 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, and concave die cavity interval 8mm, outline is identical with the outline of thick plate disc part; The end surface shape of push pedal 5 is identical with thick plate disc part 1 bottom surface, as shown in Figure 8, push pedal 5 outline and die 4 matched in clearance, monolateral fit clearance 3-5 μm, 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 μm, push pedal 5 is provided with screwed hole (the 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 with thick plate disc part 1 end face, as shown in Figure 6, Fig. 7 is the B-B sectional view of Fig. 6, and punch-die 13 is provided with the circular hole identical with on thick plate disc part 1 and irregularly-shaped hole; The outline of punch-die 13 coordinates for benchmark event with die 4, coordinate monolateral gap get the thick 5-5.5 of billot ‰ (the present embodiment be material thick 5.5 ‰); The circular hole of punch-die 13 and irregularly-shaped hole and circle are made bar 11, are special-shapedly beaten bar 12 matched in clearance, coordinate monolateral gap to get 0.06-0.1mm; The upper surface of punch-die 13 is provided with screwed hole (the present embodiment is 4-M16 and 4-M8 screwed hole).Punch-die coordinates with platen gap, monolateral fit clearance 3-5 μm.
V4E material selected by described die, punch-die, circular hole punch, irregularly-shaped hole punch, is heat-treated to HRC61-63, and degaussing process and plated surface TiCN.
2) fine-punching formation:
1. be arranged on the upper and lower table top of smart impact machine respectively by a upper and lower mould of fine-punching formation, billot, when enable possition, is delivered to essence and is rushed station by fine blanking die;
2. start smart impact machine, the lower table of smart impact machine moves upward, and applies blanking pressure F to die 4, circular hole punch 8, irregularly-shaped hole punch 6
s, to transmission rod 10, circle makes bar 11, abnormity is made bar 12 and applied pressure-pad-force F
r, air exercise bar 7 applies counter-pressure F
g, transmission rod 10 and make bar 7 and be circumferentially evenly distributed on a upper and lower mould of fine-punching formation 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 and compressed by billot 2 simultaneously; The lower table of essence impact machine continues to move upward, blanking pressure F
sbe greater than pressure-pad-force F
r, counter-pressure F
gbe set smaller than pressure-pad-force F
r, billot 2 is sheared and is started; While punch-die 13 enters die 4, circular hole punch 8, irregularly-shaped hole punch 6 also enter punch-die 13, and pressing plate 14 and circle make bar 11 simultaneously, abnormity makes bar 12 at pressure-pad-force F
rprotection under on move, push pedal 5 is at counter-pressure F
gprotection under move down, the billot 2 after shearing tightly wraps on punch-die 13, and thick plate disc part 1 is set in die 4;
3. the lower table of smart impact machine moves downward, at pressure-pad-force F
reffect under, pressing plate by shear after billot back off from punch-die, at counter-pressure F
geffect under, thick plate disc part ejects by push pedal from die, obtain be shaped after thick plate disc part.
Thick plate disc part 1 euphotic belt after shaping reaches 95%, and close to 100%, irregularly-shaped hole and outline are without tearing, and non-perpendicularity and flatness all reach the technical requirement of part.Contrast with traditional forming methods, the present invention has opened up thick plate disc part fine-punching formation approach.
Claims (6)
1. thick plate disc fine-punching formation method, is characterized in that: it comprises the following steps:
1) preparation:
The preparation of equipment: prepare hydraulic pendulum plate shears, fully automatic hydraulic essence impact machine, abrasive belt surface grinder; Wherein hydraulic pendulum plate shears cut material precision≤0.5mm, fully automatic hydraulic essence impact machine gross pressure > 5000KN;
Raw-material preparation: prepare the cold rolling or hot rolled steel plate required by thick plate disc part, steel plate thickness is identical with thick plate disc part thickness, steel plate is through spheroidizing process, the back material stopping size of adjustment hydraulic pendulum plate shears and cutting edge radius, compress plate, be billot by plate cutting, cut 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 thick plate disc part, the outline of die and die frame interference fits, die is provided with oil groove and tapped through hole; The end surface shape of push pedal is identical with thick plate disc part bottom surface, push pedal outline and die matched in clearance, monolateral fit clearance 3-5 μm, push pedal endoporus and irregularly-shaped hole and circular hole punch, irregularly-shaped hole punch matched in clearance, monolateral fit clearance 3-5 μm, push pedal is provided with screwed hole, and push pedal and ejector hanging platform adopt screw to be connected;
The preparation of b, a fine-punching formation patrix: the lower surface shape of punch-die is identical with thick plate disc part end face, and punch-die is provided with the circular hole identical with on thick plate disc part and irregularly-shaped hole; The outline of punch-die is that benchmark event coordinates with die, and the circular hole of punch-die and irregularly-shaped hole and circle are made bar, special-shapedly beaten bar matched in clearance, and the upper surface of punch-die is provided with screwed hole, and punch-die coordinates with platen gap, monolateral fit clearance 3-5 μm;
2) fine-punching formation:
1. be arranged on the upper and lower table top of smart impact machine respectively by a upper and lower mould of fine-punching formation, billot, when enable possition, is delivered to essence and is rushed station by fine blanking die;
2. start smart impact machine, the lower table of smart impact machine moves upward, and applies blanking pressure F to die, circular hole punch, irregularly-shaped hole punch
s, to transmission rod, circle makes bar, special-shaped bar of beating applies pressure-pad-force F
r, air exercise bar applies counter-pressure F
g, transmission rod and make bar and be circumferentially evenly distributed on a upper and lower mould of fine-punching formation 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, are special-shapedly made bar and compressed by billot simultaneously; The lower table of essence impact machine continues to move upward, blanking pressure F
sbe greater than pressure-pad-force F
r, counter-pressure F
gbe set smaller than pressure-pad-force F
r, billot is sheared and is started; While punch-die enters die, circular hole punch, irregularly-shaped hole punch also enter punch-die, and pressing plate and circle make bar simultaneously, abnormity makes bar at pressure-pad-force F
rprotection under on move, push pedal is at counter-pressure F
gprotection under move down, the billot after shearing tightly wraps on punch-die, and thick plate disc part is set in die;
3. the lower table of smart impact machine moves downward, at pressure-pad-force F
reffect under, pressing plate by shear after billot back off from punch-die, at counter-pressure F
geffect under, thick plate disc part ejects by push pedal from die, obtain be shaped after thick plate disc part.
2. a kind of thick plate disc according to claim 1 fine-punching formation method, it is characterized in that: in raw material set-up procedure, steel plate is through spheroidizing process, the carbide spheroidization grade obtained reaches more than 6 grades in JB/T 5074-2007 standard, and steel plate spheroidizing rear surface hardness is lower than HB150, uniform steel sheet original structure.
3. a kind of thick plate disc according to claim 1 fine-punching formation method, is characterized in that: the billot width=thick plate disc part maximum gauge+2.2* become by plate cutting expects thick.
4. a kind of thick plate disc according to claim 1 fine-punching formation method, it is characterized in that: the oil groove width arranged in described die is 2mm, the degree of depth is 1mm, and oil groove is arranged on feed direction on one side, and concave die cavity interval 8mm, outline is identical with the outline of thick plate disc part.
5. a kind of thick plate disc according to claim 1 fine-punching formation method, is characterized in that: the outline of described punch-die is that benchmark event coordinates with die, coordinates 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, are special-shapedly beaten bar matched in clearance, coordinate monolateral gap to get 0.06-0.1mm.
6. a kind of thick plate disc according to claim 1 fine-punching formation method, is characterized in that: V4E material selected by described die, punch-die, circular hole punch, irregularly-shaped hole punch, is heat-treated to HRC61-63, and degaussing process and plated surface TiCN.
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| CN103691798B (en) * | 2013-12-13 | 2015-11-18 | 武汉华夏精冲技术有限公司 | A kind ofly reduce smart stamping and to collapse the fine-punching formation method at angle |
| 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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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 |