CN103464995B - The sunk screw processing method of cold-heading alloy former - Google Patents

The sunk screw processing method of cold-heading alloy former Download PDF

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CN103464995B
CN103464995B CN201310424715.5A CN201310424715A CN103464995B CN 103464995 B CN103464995 B CN 103464995B CN 201310424715 A CN201310424715 A CN 201310424715A CN 103464995 B CN103464995 B CN 103464995B
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alloy
fuse
angle
alloy fuse
ectosome
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CN103464995A (en
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张筠
魏凤瑞
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Shenyang Aircraft Industry Group Co Ltd
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Shenyang Aircraft Industry Group Co Ltd
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Abstract

The invention provides a kind of processing method of sunk screw cold-heading alloy former, alloy fuse, middle cover, ectosome three be assembled into by hot pressing as a whole, and with the use of a series of grinding rod in process, make the processing finally achieving alloy former; This process is embodied in and first adopts ringfeder thick folding gold fuse endoporus, then play rod by angle and slightly beat alloy fuse angle type face, finally grind out profile, alloy fuse endoporus with band-guided angle grinding rod and hole grinding rod, this processing method effectively ensure that dimensional accuracy and the photometric requirement of sunk screw cold-heading alloy former, and yield rate is high.

Description

The sunk screw processing method of cold-heading alloy former
Technical field
The present invention relates to a kind of processing method of sunk screw cold-heading alloy former, belong to mechanical processing technique field.
Background technology
In the past few years, both at home and abroad for improving former life-span and quality, large quantifier elimination and experiment work are carried out, from simple overall former to the prestressing force of complexity, from carbon tool steel former to alloy tool steel former, and carbide alloy cold heading die definitely improves product quality and brings important change to field of machining.Carbide alloy cold heading die withstand shocks or thump wear-resisting condition of work under, its general character is that requirement carbide alloy has good toughness, fracture toughness, fatigue strength and good wearability.Therefore the processing of carbide alloy cold heading die is a difficult problem always, and especially processing has the sunk screw cold-heading alloy former of angle [alpha] °, and because its profile has angle [alpha] ° countersunk head, therefore general processing method is difficult to meet the various requirements such as Product Precision.
Summary of the invention
The object of this invention is to provide a kind of processing method being applicable to be processed with the sunk screw cold-heading alloy former of angle [alpha] °.
Technical scheme of the present invention: the processing method of sunk screw cold-heading alloy former, alloy fuse, middle cover, ectosome three are assembled into as a whole by hot pressing, concrete processing method comprises following concrete steps:
(1) first process alloy fuse, its processing method comprises following:
(1) preparation of material: the alloy fuse getting two end band central small hole, require that material is intact, flawless, without sand holes;
(2) pincers worker operation: by two top central small hole propping up alloy fuse two ends, decontamination;
(3) electrolytic mill operation: top, the dead man carried with electrolytic grinder and clip clamping, then pushes up cylindrical grinding and sees light;
(4) line cutting process: with cylindrical centering, line cut hole d stays 0.08-0.10mm, and the circularity of retaining hole and cylindricity are between 0.02-0.03mm;
(5) pincers worker operation: stay 0.04mm with the thick porting d of ringfeder, ensure that cylindricity is between 0-0.02mm, ringfeder is enclosed within the barred body of band tapering in use, described ringfeder adopts HT25-47, its excircle dimension 0.04-0.06mm less of the nominal dimension of hole d, its length is 1/3rd of hole d length, and the amount ratio of ringfeder is 1:(3-6);
(6) electrolytic mill operation: the clip clamping carried with electrolytic grinder, mill D2 and caudal horn, ensure that the axiality at D2 and caudal horn and d center, hole is between 0-0.025mm;
(7) electrolytic mill operation: the two ends of break-in gold fuse, ensure that the depth of parallelism is between 0-0.02mm, and the perpendicularity of hole d is between 0-0.03mm;
(8) turner operation: car α angle;
(9) pincers worker operation: adopt upsetting to make the vertical machine of angle profile, angle is made excellent clamping on this vertical machine, adopt clamping with three-jaw chuck alloy fuse and fix on the table, angle plays rod when contact alloy fuse, both make pivotal abrasive action, make again the rectilinear motion that alloy fuse is beaten in rhythmical upsetting; Described angle plays rod, and its angle is 1/2nd of required grinding angle tolerance, its excircle dimension 0.3mm larger than the angle profile D size of hole d, and angle breaks material selection 45 steel of rod, and amount ratio is 1:3;
(10) pincers worker operation: adopt abradant vertical machine, by angle grinding rod clamping on this vertical machine, hand-held alloy fuse, angle grinding rod is at the contact grinding alloy core period of the day from 11 p.m. to 1 a.m, and guarantee and d center, hole are beated between 0-0.05mm; Described angle grinding rod, its angle is 1/2nd of required grinding angle tolerance, its excircle dimension 0.3mm larger than the angle profile D size of hole d, and the material selection HT25-47 of angle grinding rod.;
(11) electrolytic mill operation: the fixture clamping alloy fuse carried with electrolytic grinder, continue the two ends of break-in gold fuse, and ensure that the depth of parallelism of alloy fuse both ends of the surface is between 0-0.02mm, and the perpendicularity in hole remains between 0-0.03mm, control D and L1 size;
(12) pincers worker operation: with hole grinding rod lappingout endoporus to requiring;
(13) pincers worker operation: 1/2 and the caudal horn of slightly beating R with oilstone;
(2) cover in processing, and alloy fuse and middle cover are assembled into as a whole, concrete processing method comprises following:
(1) preparation of material: shearing blanking, require that material is intact, flawless, without sand holes;
(2) turner operation: the clamping with three-jaw chuck carried with lathe, turning D1 stays the surplus of 0.3-0.4mm, and endoporus D2 joins the surplus staying 0.4-0.5mm by alloy fuse, length direction stays 1-2mm surplus;
(3) heat treatment step: quench tempering HRC53-58;
(4) blast operation;
(5) plain grinding operation: overlap with in Flat pliers clamping, grinds one end datum level;
(6) endoporus grinder sequence: the datum level ground with plain grinding is benchmark, middle cover and alloy fuse match grinding endoporus D2 pay in pairs;
(7) pincers worker operation: in be enclosed within preheating in 450 DEG C of salt stoves and be incubated 30 minutes, then take out and assemble with alloy fuse, while ram compression alloy fuse make middle cover and alloy fuse end face;
(8) the unnecessary part in end is overlapped in after turner operation: Che Quzhong overlaps and presses core with alloy fuse;
(9) outer grinder sequence: with the hole d of alloy fuse for benchmark, cylindrical grinding D1 and caudal horn;
(10) plain grinding operation: with the cylindrical ground for benchmark, the two ends overlapped in mill, ensure to keep flushing and reaching required precision with alloy fuse;
(11) pincers worker operation: beat rounded tail angle with oilstone;
(3) finally carry out the processing of ectosome and ectosome and middle cover, alloy fuse are assembled into an entirety, concrete grammar comprises following:
(1) preparation of material: sawing, require that material is intact, flawless, without sand holes;
(2) turner operation: rough turn cylindrical D0 and endoporus D1, respectively stay 1.5-2mm surplus, length L stays 4-5mm surplus, and length L1 is to size, and all the other are not processed;
(3) heat treatment step: modified HRC37-41 is carried out to ectosome;
(4) blast operation;
(5) turner operation: finish turning endoporus D1 and length L1, D1 and middle cover external diameter are joined car and stayed 0.09-0.11mm surplus, the mouth end in hole and tail end ensure that perpendicularity perpendicular to hole is between 0-0.015mm, and all the other are car not;
(6) plain grinding operation: the mouth end of upper Flat pliers mill ectosome and tail end, ensure that the depth of parallelism of mouth end and tail end is between 0-0.015mm;
(7) pincers worker operation: ectosome is placed in 450 DEG C of salt stoves and is incubated, takes out bottom rear ram compression alloy fuse and middle cover to ectosome for 30 minutes;
(8) car: the fixture carried with lathe is with center, hole for benchmark drill reaming d stays the 0.01-0.04 amount of grinding, and car ectosome cylindrical is to requiring, ensure that the axiality at cylindrical and center, hole is between 0-0.05mm, car ectosome both ends of the surface stay mill amount 0.2-0.3mm simultaneously;
(9) clamp: with hole grinding rod lappingout endoporus d to requiring, marking;
(10) clamp: essence throws the angle profile of alloy fuse, i.e. α angle profile place, ensure and d center, hole beat between 0-0.05mm;
(11) flat: plain grinding ectosome tail end ensures to hold row level with both hands with mouth, and ensures that the perpendicularity at tail end and d center, hole is between 0-0.03, keeps length direction L to dimensional requirement;
(12) clamp: grind R to requiring with oilstone;
(13) clamp: the notch line drawing R1 place, this place's notch is draw-in groove, is connected, thus realizes the processing of cold-heading when applying this former in the future by this draw-in groove with corresponding utensil;
(14) dig: adjustable cast iron planes R1 notch is to size.
Beneficial effect of the present invention: three parts, by processing alloy fuse, middle cover, ectosome three part respectively, are then assembled into as a whole, and with the use of a series of grinding rod in process, make the processing finally achieving alloy former by the present invention; This process is embodied in and first adopts ringfeder thick folding gold fuse endoporus, then play rod by angle and slightly beat alloy fuse angle type face, finally grind out profile, alloy fuse endoporus with band-guided angle grinding rod and hole grinding rod, this processing method effectively ensure that dimensional accuracy and the photometric requirement of sunk screw cold-heading alloy former, and yield rate is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of sunk screw cold-heading alloy former.
Fig. 2 is alloy fuse schematic diagram.
Fig. 3 is middle cover schematic diagram.
Fig. 4 is that middle cover and alloy fuse assemble rear section schematic diagram.
Fig. 5 is ectosome schematic diagram.
Fig. 6 is ringfeder schematic diagram.
Fig. 7 is the schematic diagram of the barred body of band tapering.
Fig. 8 is the schematic diagram that angle plays rod.
Fig. 9 is the schematic diagram of angle grinding rod.
Figure 10 is the schematic diagram of corner apertures grinding rod.
Detailed description of the invention
A kind of sunk screw cold-heading alloy former, as shown in Figure 1, alloy fuse, middle cover, ectosome three are assembled into as a whole by hot pressing, concrete processing method comprises following concrete steps:
(1) first process alloy fuse, as shown in Figure 2, its processing method comprises following:
(1) preparation of material: the alloy fuse getting two end band central small hole, require that material is intact, flawless, without sand holes;
(2) pincers worker operation: by two top central small hole propping up alloy fuse two ends, decontamination;
(3) electrolytic mill operation: top, the dead man carried with electrolytic grinder and clip clamping, then pushes up cylindrical grinding and sees light;
(4) line cutting process: with cylindrical centering, line cut hole d stays 0.08-0.10mm, and the circularity of retaining hole and cylindricity are between 0.02-0.03mm;
(5) pincers worker operation: stay 0.04mm with the thick porting d of ringfeder, ensure that cylindricity is between 0-0.02mm, ringfeder is enclosed within the barred body of band tapering in use, described ringfeder adopts HT25-47, its excircle dimension 0.04-0.06mm less of the nominal dimension of hole d, its length is 1/3rd of hole d length, and the amount ratio of ringfeder is 1:(3-6), as shown in Figure 6 and Figure 7;
(6) electrolytic mill operation: the clip clamping carried with electrolytic grinder, mill D2 and 5 ° caudal horn, ensures that the axiality at D2 and 5 ° caudal horn and d center, hole is between 0-0.025mm;
(7) electrolytic mill operation: the two ends of break-in gold fuse, ensure that the depth of parallelism is between 0-0.02mm, and the perpendicularity of hole d is between 0-0.03mm;
(8) turner operation: car α angle;
(9) pincers worker operation: adopt upsetting to make the vertical machine of angle profile, angle is made excellent clamping on this vertical machine, adopt clamping with three-jaw chuck alloy fuse and fix on the table, angle plays rod when contact alloy fuse, both make pivotal abrasive action, make again the rectilinear motion that alloy fuse is beaten in rhythmical upsetting; Described angle plays rod, and its angle is 1/2nd of required grinding angle tolerance, its excircle dimension 0.3mm larger than the angle profile D size of hole d, and angle breaks material selection 45 steel of rod, and amount ratio is 1:3, as shown in Figure 8;
(10) pincers worker operation: adopt abradant vertical machine, by angle grinding rod clamping on this vertical machine, hand-held alloy fuse, angle grinding rod is at the contact grinding alloy core period of the day from 11 p.m. to 1 a.m, and guarantee and d center, hole are beated between 0-0.05mm; Described angle grinding rod, its angle is 1/2nd of required grinding angle tolerance, its excircle dimension 0.3mm larger than the angle profile D size of hole d, and the material selection HT25-47 of angle grinding rod, as shown in Figure 9;
(11) electrolytic mill operation: the fixture clamping alloy fuse carried with electrolytic grinder, continue the two ends of break-in gold fuse, and ensure that the depth of parallelism of alloy fuse both ends of the surface is between 0-0.02mm, and the perpendicularity in hole remains between 0-0.03mm, control D and L1 size;
(12) pincers worker operation: with hole grinding rod lappingout endoporus to requiring;
(13) pincers worker operation: the 1/2 and 5 ° of caudal horn slightly beating R with oilstone;
(2) cover in processing, as shown in Figure 3 and Figure 4 and be assembled into as a whole by alloy fuse and middle cover, concrete processing method comprises following:
(1) preparation of material: shearing blanking, require that material is intact, flawless, without sand holes;
(2) turner operation: the clamping with three-jaw chuck carried with lathe, turning D1 stays the surplus of 0.3-0.4mm, and endoporus D2 joins the surplus staying 0.4-0.5mm by alloy fuse, length direction stays 1-2mm surplus;
(3) heat treatment step: quench tempering HRC53-58;
(4) blast operation;
(5) plain grinding operation: overlap with in Flat pliers clamping, grinds one end datum level;
(6) endoporus grinder sequence: the datum level ground with plain grinding is benchmark, middle cover and alloy fuse match grinding endoporus D2 pay in pairs;
(7) pincers worker operation: in be enclosed within preheating in 450 DEG C of salt stoves and be incubated 30 minutes, then take out and assemble with alloy fuse, while ram compression alloy fuse make middle cover and alloy fuse end face;
(8) the unnecessary part in end is overlapped in after turner operation: Che Quzhong overlaps and presses core with alloy fuse;
(9) outer grinder sequence: with the hole d of alloy fuse for benchmark, cylindrical grinding D1 and 5 ° caudal horn;
(10) plain grinding operation: with the cylindrical ground for benchmark, the two ends overlapped in mill, ensure to keep flushing and reaching required precision with alloy fuse;
(11) pincers worker operation: beat circle 5 ° of caudal horns with oilstone;
(3) finally carry out the processing of ectosome, as shown in Figure 5, and ectosome and middle cover, alloy fuse are assembled into an entirety, concrete grammar comprises following:
(1) preparation of material: sawing, require that material is intact, flawless, without sand holes;
(2) turner operation: rough turn cylindrical D0 and endoporus D1, respectively stay 1.5-2mm surplus, length L stays 4-5mm surplus, and length L1 is to size, and all the other are not processed;
(3) heat treatment step: modified HRC37-41 is carried out to ectosome;
(4) blast operation;
(5) turner operation: finish turning endoporus D1 and length L1, D1 and middle cover external diameter are joined car and stayed 0.09-0.11mm surplus, the mouth end in hole and tail end ensure that perpendicularity perpendicular to hole is between 0-0.015mm, and all the other are car not;
(6) plain grinding operation: the mouth end of upper Flat pliers mill ectosome and tail end, ensure that the depth of parallelism of mouth end and tail end is between 0-0.015mm;
(7) pincers worker operation: ectosome is placed in 450 DEG C of salt stoves and is incubated, takes out bottom rear ram compression alloy fuse and middle cover to ectosome for 30 minutes;
(8) car: the fixture carried with lathe is with center, hole for benchmark drill reaming d stays the 0.01-0.04 amount of grinding, and car ectosome cylindrical is to requiring, ensure that the axiality at cylindrical and center, hole is between 0-0.05mm, car ectosome both ends of the surface stay mill amount 0.2-0.3mm simultaneously;
(9) clamp: with hole grinding rod lappingout endoporus d to requiring, marking, as shown in Figure 10;
(10) clamp: essence throws the angle profile of alloy fuse, i.e. α angle profile place, ensure and d center, hole beat between 0-0.05mm;
(11) flat: plain grinding ectosome tail end ensures to hold row level with both hands with mouth, and ensures that the perpendicularity at tail end and d center, hole is between 0-0.03, keeps length direction L to dimensional requirement;
(12) clamp: grind R to requiring with oilstone;
(13) clamp: the notch line drawing R1 place, this place's notch is draw-in groove, is connected, thus realizes the processing of cold-heading when applying this former in the future by this draw-in groove with corresponding utensil;
(14) dig: adjustable cast iron planes R1 notch is to size.

Claims (5)

1. the sunk screw processing method of cold-heading alloy former, is characterized in that, alloy fuse, middle cover, ectosome three are assembled into as a whole by hot pressing, concrete processing method comprises following concrete steps:
(1) first alloy fuse is processed, wherein D 21for alloy fuse outside diameter, d is alloy fuse diameter of bore size, α is the angle of alloy fuse opening, D is the opening diameter size of α angle at alloy fuse end face, L1 is the length dimension of alloy fuse, R is the fillet size at alloy fuse endoporus d and α angle faces cusp place, and its processing method comprises following:
(1) preparation of material: the alloy fuse getting two end band central small hole, require that material is intact, flawless, without sand holes;
(2) pincers worker operation: by two top central small hole propping up alloy fuse two ends, decontamination;
(3) electrolytic mill operation: top, the dead man carried with electrolytic grinder and clip clamping, then pushes up cylindrical grinding and sees light;
(4) line cutting process: with cylindrical centering, line suits golden fuse diameter of bore d and stays 0.08-0.10mm, and the circularity of retaining hole and cylindricity are between 0.02-0.03mm;
(5) pincers worker operation: stay 0.04mm with ringfeder thick lapping-in gold fuse diameter of bore d, ensure that cylindricity is between 0-0.02mm;
(6) electrolytic mill operation: the clip clamping carried with electrolytic grinder, break-in gold fuse outside diameter D 21and caudal horn, ensure D 21and the axiality at caudal horn and alloy fuse diameter of bore d center is between 0-0.025mm;
(7) electrolytic mill operation: the two ends of break-in gold fuse, ensure that the depth of parallelism is between 0-0.02mm, and the perpendicularity of alloy fuse diameter of bore d is between 0-0.03mm;
(8) turner operation: the angle [alpha] of car alloy fuse termination openings;
(9) pincers worker operation: adopt upsetting to make the vertical machine of angle profile, angle is made excellent clamping on this vertical machine, adopt clamping with three-jaw chuck alloy fuse and fix on the table, angle plays rod when contact alloy fuse, both make pivotal abrasive action, make again the rectilinear motion that alloy fuse is beaten in rhythmical upsetting;
(10) pincers worker operation: adopt abradant vertical machine, by angle grinding rod clamping on this vertical machine, hand-held alloy fuse, angle grinding rod is at the contact grinding alloy core period of the day from 11 p.m. to 1 a.m, and guarantee and alloy fuse diameter of bore d center are beated between 0-0.05mm;
(11) electrolytic mill operation: the fixture clamping alloy fuse carried with electrolytic grinder, continue the two ends of break-in gold fuse, and ensure that the depth of parallelism of alloy fuse both ends of the surface is between 0-0.02mm, and the perpendicularity in hole remains between 0-0.03mm, the opening diameter D of control α angle at alloy fuse end face and the length dimension L1 of alloy fuse;
(12) pincers worker operation: with hole grinding rod lappingout endoporus to requiring;
(13) pincers worker operation: 1/2 and the caudal horn of slightly beating R with oilstone;
(2) cover in processing, and alloy fuse and middle cover are assembled into as a whole, wherein D 22for the diameter of bore size of middle cover, D 11for the outside diameter size of middle cover, the length dimension of middle cover is consistent with the length dimension of alloy fuse and be all L1, and concrete processing method comprises following:
(1) preparation of material: shearing blanking, require that material is intact, flawless, without sand holes;
(2) turner operation: the clamping with three-jaw chuck carried with lathe, turning diameter dimension D 11stay the surplus of 0.3-0.4mm, diameter of bore dimension D 22join the surplus staying 0.4-0.5mm by alloy fuse, length direction stays 1-2mm surplus;
(3) heat treatment step: quench tempering HRC53-58;
(4) blast operation;
(5) plain grinding operation: overlap with in Flat pliers clamping, grinds one end datum level;
(6) endoporus grinder sequence: the datum level ground with plain grinding is benchmark, middle cover and alloy fuse match grinding diameter of bore dimension D 22paired payment;
(7) pincers worker operation: in be enclosed within preheating in 450 DEG C of salt stoves and be incubated 30 minutes, then take out and assemble with alloy fuse, while ram compression alloy fuse make middle cover and alloy fuse end face;
(8) the unnecessary part in end is overlapped in after turner operation: Che Quzhong overlaps and presses core with alloy fuse;
(9) outer grinder sequence: with alloy fuse diameter of bore d for benchmark, cylindrical grinding diameter dimension D 11and caudal horn;
(10) plain grinding operation: with the cylindrical ground for benchmark, the two ends overlapped in mill, ensure to keep flushing and reaching required precision with alloy fuse;
(11) pincers worker operation: beat rounded tail angle with oilstone;
(3) finally carry out the processing of ectosome and ectosome and middle cover, alloy fuse are assembled into entirety, wherein a D 0for the outside diameter size of ectosome, D 12for the diameter of bore size of ectosome, the length dimension of the length dimension of shoulder hole and alloy fuse and middle cover is all consistent and be all L1, L is the overall length dimension of ectosome, the size of a concave arc profile on R1 outer sleeve body, uropore diameter dimension and alloy fuse diameter of bore consistent size and be all d, concrete grammar comprises following:
(1) preparation of material: sawing, require that material is intact, flawless, without sand holes;
(2) turner operation: the outside diameter dimension D 0 of rough turn ectosome and the diameter of bore dimension D of ectosome 12, respectively stay 1.5-2mm surplus, the total length L of ectosome stays 4-5mm surplus, and the length L1 of shoulder hole is to size, and all the other are not processed;
(3) heat treatment step: modified HRC37-41 is carried out to ectosome;
(4) blast operation;
(5) turner operation: the diameter of bore dimension D of finish turning ectosome 12with the length L1 of shoulder hole, D 12with middle cover outer diameter D 11join car and stay 0.09-0.11mm surplus, the mouth end in hole and tail end ensure that perpendicularity perpendicular to hole is between 0-0.015mm, and all the other are car not;
(6) plain grinding operation: the mouth end of upper Flat pliers mill ectosome and tail end, ensure that the depth of parallelism of mouth end and tail end is between 0-0.015mm;
(7) pincers worker operation: ectosome is placed in 450 DEG C of salt stoves and is incubated, takes out bottom rear ram compression alloy fuse and middle cover to ectosome for 30 minutes;
(8) car: the fixture carried with lathe with center, hole for the drill and ream uropore diameter dimension d of ectosome of benchmark stays the 0.01-0.04 amount of grinding, car ectosome cylindrical is to requiring, ensure that the axiality at cylindrical and center, hole is between 0-0.05mm, car ectosome both ends of the surface stay mill amount 0.2-0.3mm simultaneously;
(9) clamp: with the uropore diameter dimension d of hole grinding rod lappingout ectosome to requiring, marking;
(10) clamp: essence throws the angle profile of alloy fuse, i.e. α angle profile place, ensure and ectosome uropore diameter dimension d center beat between 0-0.05mm;
(11) flat: plain grinding ectosome tail end ensures to hold row level with both hands with mouth, and ensures that the perpendicularity at tail end and d center, hole is between 0-0.03, keeps length direction L to dimensional requirement;
(12) clamp: with the fillet R at the golden fuse endoporus d of oilstone lapping-in and α angle faces cusp place to requiring;
(13) clamp: the notch line drawing the size R1 place of a concave arc profile on outer sleeve body;
(14) dig: adjustable cast iron planes R1 notch is to size.
2. the sunk screw as claimed in claim 1 processing method of cold-heading alloy former, is characterized in that the ringfeder adopted in described alloy fuse process is enclosed within the barred body of band tapering in use.
3. the sunk screw as claimed in claim 1 or 2 processing method of cold-heading alloy former, it is characterized in that: described ringfeder adopts HT25-47, its excircle dimension 0.04-0.06mm less of the nominal dimension of hole d, its length is 1/3rd of hole d length, and the amount ratio of ringfeder is 1:(3-6).
4. the sunk screw as claimed in claim 1 processing method of cold-heading alloy former, it is characterized in that the angle adopted in described alloy fuse process plays rod, its angle is 1/2nd of required grinding angle tolerance, its excircle dimension 0.3mm larger than the angle profile D size of hole d, and angle breaks material selection 45 steel of rod, amount ratio is 1:3.
5. the sunk screw as claimed in claim 1 processing method of cold-heading alloy former, it is characterized in that the angle grinding rod adopted in described alloy fuse process, its angle is 1/2nd of required grinding angle tolerance, its excircle dimension 0.3mm larger than the angle profile D size of hole d, and the material selection HT25-47 of angle grinding rod.
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CN202263880U (en) * 2011-10-24 2012-06-06 陕西天达航空标准件有限公司 Cold upsetting combined female die for machining blind rivet mandrel by upsetting-extruding method
CN103273416A (en) * 2013-06-14 2013-09-04 沈阳飞机工业(集团)有限公司 Grinding rods of cold heading steel cavity dies for earring type bolts and application thereof

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CN1915654A (en) * 2006-09-01 2007-02-21 苏州江钻新锐硬质合金有限公司 Standing mold pressing die for bars in hard alloy, and manufacturing method
CN101332486A (en) * 2007-06-29 2008-12-31 鸿富锦精密工业(深圳)有限公司 Combined mould
CN202263880U (en) * 2011-10-24 2012-06-06 陕西天达航空标准件有限公司 Cold upsetting combined female die for machining blind rivet mandrel by upsetting-extruding method
CN103273416A (en) * 2013-06-14 2013-09-04 沈阳飞机工业(集团)有限公司 Grinding rods of cold heading steel cavity dies for earring type bolts and application thereof

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