CN105014338B - A kind of end trimming shears blade unit - Google Patents

A kind of end trimming shears blade unit Download PDF

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Publication number
CN105014338B
CN105014338B CN201510502299.5A CN201510502299A CN105014338B CN 105014338 B CN105014338 B CN 105014338B CN 201510502299 A CN201510502299 A CN 201510502299A CN 105014338 B CN105014338 B CN 105014338B
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rough forging
blade
forging
thickness
processing
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CN105014338A (en
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刘道豹
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ANHUI LINGFENG METALLURGICAL MACHINERY Co Ltd
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ANHUI LINGFENG METALLURGICAL MACHINERY Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/40Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D35/00Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D35/00Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • B23D35/001Tools for shearing machines or shearing devices; Holders or chucks for shearing tools cutting members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/46Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of disc blades
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/14Anti-slip materials; Abrasives

Abstract

The invention discloses a kind of end trimming shears blade unit, belong to mechanical bit processing technique field.The end trimming shears blade unit of the present invention, including disc shear blade thereby and scrap cutter blade, wherein, disc shear blade thereby is used to shear sheet material, and scrap cutter blade is used to crush the leftover pieces that sheet material is shear off by disc shear blade thereby;Disc shear blade thereby is a disk, and the center of the disk is provided with through hole, and the angle that the side surface circumference of disc shear blade thereby is provided between V-groove, the hypotenuse of V-groove two is 1 °~1 ° 48 ';Wherein, the manufacture method of disc shear blade thereby comprises the following steps:Step 1: forging;Step 2: annealing;Step 3: roughing;Step 4: quenching;Step 5: tempering;Step 6: finishing.Using technical scheme, the flatness of disc shear blade thereby can reach 0.0005mm, and thickness deviation reaches ± 0.0005mm.

Description

A kind of end trimming shears blade unit
Technical field
The present invention relates to mechanical bit processing technique field, more specifically to a kind of end trimming shears blade unit.
Background technology
End trimming shears blade unit includes disc shear blade thereby and scrap cutter blade, and disc shear blade thereby and scrap cutter blade are used jointly In the processing of iron and steel sheet and plate, after shaping, its corner is uneven shape to sheet material, during sheet material fortune work(, passes through disk Shear blade is sheared to sheet material, is removed its uneven corner, is reached satisfactory specification, then sheet material Roll bending is molded, and the leftover pieces shear off by disc shear blade thereby, then broken by scrap cutter blade, the leftover pieces after crushing Recycling is seen off by belt conveyer.
Disc shear blade thereby has pole to the wearability and impact resistance of blade selection in itself, Technology for Heating Processing and blade High requirement.At present, cutter manufacturing enterprise mostly from a kind of alloy tool steel as production disc shear blade thereby raw material, its Component is by weight percentage:C:1.45~1.70%;Si:≤ 0.40%;Mn:≤ 0.40%;S:≤ 0.030%;P:≤ 0.030%;Cr:11.00~12.50%;Ni:Allow residual content≤0.25%;Cu:Allow residual content≤0.30%;V: 0.15~0.30%;Mo:0.40~0.60%, remaining is Fe.Its production stage is:(1) forge;(2) anneal;(3) Vehicle Processing Shaping, and stay allowance for finish;(4) quench;(5) it is tempered;(6) finished by the technical requirements on drawing, blade choosing Though material and processing technology can meet the shearing of common metal sheet material to a certain extent, when user proposes to the precision of blade During high request, it is difficult to be reached by disclosed processing method in the prior art.In particular for shearing the circle shear of aimplant-lunber Blade, the requirement of its thickness deviation is in ± 0.001mm, for the disc shear blade thereby for some advanced equipments of high grade and precision sheet materials, it is desirable to more Plus it is harsh, the control of its planarity requirements is in 0.0005mm, and the requirement of its thickness deviation is in ± 0.0005mm, and this is of the prior art Common machining techniques are much unapproachable.
By patent retrieval, the technical scheme for being related to attrition process is disclosed, such as:Chinese Patent Application No. 2009100564395, the applying date is:On August 14th, 2009, invention and created name is:Shredder blade sharpness grinding composition, Abrasive sheet, grinding bag and the related manufacturing process being produced from it, this application case disclose a kind of shredder blade sharpness grinding group Compound, is made up of the additive of 51~65%w/w grounds travel, 5~35%w/w sticky fat agent and 3~30%w/w, described Sticky fat agent is selected from the one or more of white oil, animal oil, vegetable oil and stearin candle, and the additive is selected from antirusting powder, wear-resistant The one or more of powder, powder for antistatic and anti-oxidant powder, the grounds travel is natural diamond powder grounds travel or natural micron stone English powder grinding and polishing powder, the mesh number of the grounds travel is 260 mesh, and hardness is 7.This application case can carry out preferable to kneader bar Grinding, it is and easy to use, but the abrasive composition of this application case can not meet planarity requirements control in 0.0005mm, it is thick Spend high-precision disc shear blade thereby process of the deviation requirement in ± 0.0005mm.
The content of the invention
1. the invention technical problem to be solved
It is a primary object of the present invention to overcome the flatness of disc shear blade thereby, thickness in existing end trimming shears blade unit inclined Difference is difficult to the requirement for meeting some advanced equipments of high grade and precision sheet shearings there is provided a kind of end trimming shears blade unit, using the present invention's Technical scheme, the flatness of disc shear blade thereby can reach 0.0005mm, and thickness deviation reaches ± 0.0005mm.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is:
The end trimming shears blade unit of the present invention, including disc shear blade thereby and scrap cutter blade, wherein, disc shear blade thereby is used for Sheet material is sheared, scrap cutter blade is used to crush the leftover pieces that sheet material is shear off by disc shear blade thereby;Institute Disc shear blade thereby is stated for a disk, the center of the disk is provided with through hole, and the side surface circumference of disc shear blade thereby is provided with V-type Groove;Wherein, the manufacture method of disc shear blade thereby comprises the following steps:
Step 1: forging;
Step 2: annealing;
Step 3: roughing;
Step 4: quenching;
Step 5: tempering;
Step 6: finishing.
Further improved as the end trimming shears blade unit of the present invention, the angle between the hypotenuse of V-groove two is 1 °~1 ° 48 '.
Further improved as the end trimming shears blade unit of the present invention, the outside diameter of the disc shear blade thereby is 430mm, through-hole diameter is 215mm, and thickness is 40mm.
The manufacture method of the disc shear blade thereby of the present invention, comprises the following steps:
Step 1: forging
Disc shear blade thereby is made using blank, and the component of the blank is by weight percentage:C:1.10~1.21%, V: 0.45~0.67%, W:0.51~0.67%, Ti:0.43~0.55%, Zr:0.33~0.41%, Nb:0.23~0.35%, Cr:8.9~11.74%, Mo:0.75~0.86%, remaining is Fe;
Above-mentioned blank is processed as disc first, it is finally bad to hair to carry out then in the bad center holes drilled through of hair Forging processing, obtain forging hair it is bad, its forging ratio be 6.7~7.5;
Step 2: annealing
After step one conducting forging processing, rough forging is made annealing treatment, is specially:Rough forging is first loaded into heat Treatment furnace, 850~870 DEG C are warming up to 15 DEG C/min heating rate, are incubated 2~3 hours, then even by 22~24 hours Speed is cooled to 390~400 DEG C, air cooling of finally coming out of the stove;
Step 3: roughing
After step 2 makes annealing treatment, rough forging is made to the workpiece for leaving allowance for finish, is specially:
Periphery, through-hole face and the upper and lower end face of rough forging are processed, the surplus for making rough forging periphery is 1.5mm, The surplus of through-hole face is 1.5mm, and thickness surplus is 1.6mm;
Step 4: quenching
After step 3 roughing processing, Quenching Treatment is carried out to rough forging, its step is:
1. inside heating furnace, is warming up to 600~700 DEG C, rough forging is then put into inside heating furnace;
2. inside heating furnace, is warming up to 1100~1150 DEG C with 30 DEG C/min heating rate, 2~3 hours are incubated, so Rough forging is taken out from inside heating furnace afterwards;
3. rough forging, is put into salt bath furnace 25~30min of inside holding, then rough forging is taken out and places into oil quenching pond It is interior, when rough forging is cooled to 100~120 DEG C, take out rough forging;
4. rough forging, is put into inside heating furnace, inside heating furnace is warming up to 550 with 5 DEG C/min heating rate ~600 DEG C, 2 hours are incubated, rough forging is taken out and carries out air cooling;
Step 5: tempering
After step 4 Quenching Treatment, temper is carried out to rough forging, its step is:
1. after rough forging, is placed in into the insulation of 540~550 DEG C of inside heating furnace 3~4 hours, air cooling of coming out of the stove;
2. after rough forging, is placed in into the insulation of 550~560 DEG C of inside heating furnace 3~4 hours, air cooling of coming out of the stove;
3. after rough forging, is placed in into the insulation of 560~570 DEG C of inside heating furnace 3~4 hours, air cooling of coming out of the stove;
Step 6: finishing
After step 5 temper, finishing processing is carried out to rough forging, its step is:
1., the periphery and through-hole face of processing rough forging, the outside diameter for making rough forging is 430mm, through-hole diameter For 215mm;
2., by rough forging on vertical grinder, the forging hair that thickness is 40.11mm is obtained after vertical grinder processing Base;
3. thickness, is subjected to first time fine grinding for 40.11mm rough forging, obtaining thickness after the processing of first time fine grinding is 40.7mm rough forging;
4., thickness is mounted on vertical grinder again for 40.7mm rough forging, thickness is obtained after vertical grinder processing For 40.4mm rough forging;
5. thickness, is carried out into second for 40.4mm rough forging to refine, obtaining thickness after second of fine grinding processing is 40.2mm rough forging;
6. thickness, is subjected to third time fine grinding for 40.2mm rough forging, obtaining thickness after the processing of third time fine grinding is 40.1mm rough forging;
7. thickness, is subjected to the 4th fine grinding for 40.1mm rough forging, obtaining thickness after the 4th fine grinding processing is 40.005mm rough forging;
8. thickness, is subjected to the 5th fine grinding for 40.005mm rough forging, plane is obtained after the 5th fine grinding processing Degree reaches 0.0005mm, and thickness deviation reaches ± 0.0005mm disc shear blade thereby finished product.
Further improved as the manufacture method of disc shear blade thereby of the present invention, in step 6, the 5th fine grinding Step is as follows:
A, preparation blade fixing tool:Blade fixing tool is to offer to enclose on disc-shaped structure, the blade fixing tool Around equally distributed 18 blade mounting holes in its center, blade mounting holes are circular cavernous structure, the center of circle of the blade mounting holes Circle center distance with blade fixing tool is 700mm;
B, blade fixing tool of the rough forging installed in step A for being 40.005mm by thickness after the 4th fine grinding processing On, and will be equipped with the blade fixing tool of rough forging and be put on grinder, while adding abrasive, the grinder is flat for fine grinding Surface grinding;
Start grinder after the completion of C, step B, the lap speed for controlling grinder is 5~7r/min, the pressure of abrasive disk Control exert oneself for 400~450N;Grinding stops grinding after 2 minutes, and the rough forging turn-over in blade fixing tool continues to grind Mill stops grinding after 2 minutes, rough forging then is moved into next blade according to clockwise or counterclockwise pacifies Fill in hole, repeat above-mentioned turn-over, moving operation;Wherein, rough forging is placed 5 minutes after often grinding 2 minutes, then carried out next Secondary grinding;The total time-consuming of the 5th fine grinding of rough forging is 4~5 hours.
Further improved as the manufacture method of the disc shear blade thereby of the present invention, in the 5th fine grinding of step 6, Step B abrasive is made up of alumina powder, green silicon carbide powder, machine oil and kerosene, and the preparation process of the abrasive is as follows:
A, weigh alumina powder and machine oil, wherein the mass ratio of alumina powder and machine oil is 2~2.5:1, will be above-mentioned Alumina powder and machine oil stirring are mixed 25~30 minutes;
B, weigh green silicon carbide powder and kerosene, wherein the mass ratio of green silicon carbide powder and kerosene is 3~3.5:1, will Above-mentioned green silicon carbide powder and kerosene stirring mixing 25~30 minutes;
C, the mixing by green silicon carbide powder and kerosene in the mixture and step b of alumina powder in step a and machine oil Thing stirring mixing 30~35 minutes, produces abrasive.
Further improved as the manufacture method of the disc shear blade thereby of the present invention, in step one, hair bad forging process In heating-up temperature be:1100~1200 DEG C.
Further improved as the manufacture method of disc shear blade thereby of the present invention, in step 5, heat is 3. walked by the After processing, the hardness of rough forging is HRC 61~62.
Further improved as the manufacture method of the disc shear blade thereby of the present invention, aluminum oxide in step B abrasive The particle diameter of micro mist is 50~100 μm, and the particle diameter of green silicon carbide powder is 10~15 μm.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, with following remarkable result:
(1), the present invention in, rough forging carry out the 5th time fine grinding when, using by rough forging in certain direction multiple The mode that blade mounting holes lubrication groove stream is ground, can overcome the small difference that grinding effect is present at abrasive disk diverse location It is different, considerably improve the flatness and thickness deviation of disc shear blade thereby finished product, the disc shear blade thereby manufactured using this method, it is put down Face degree can reach 0.0005mm, and thickness deviation reaches ± 0.0005mm, meet the need of some advanced equipments of high grade and precision sheet shearings Ask, this is that Common machining techniques of the prior art are much difficult to expect also unapproachable.
(2), in the present invention, rationally coordinated by the particle diameter to alumina powder in abrasive and green silicon carbide powder Set, while alumina powder, green silicon carbide powder, machine oil and kerosene in abrasive are mixed with step according to a certain percentage, Abrasive finished product is finally made, the abrasive finished product prepared using the above method is conducive to milli machine to be ground, grinding efficiency Height, can significantly improve the flatness of disc shear blade thereby finished surface, reach the flatness of disc shear blade thereby finished product 0.0005mm, this is that Common machining techniques of the prior art are much unapproachable.
Brief description of the drawings
Fig. 1 is the overlooking the structure diagram of disc shear blade thereby in end trimming shears blade unit of the invention;
Fig. 2 be Fig. 1 in along A-A to cross-sectional view.
Label declaration in schematic diagram:1st, V-groove.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1 and Fig. 2, the end trimming shears blade unit of the present embodiment, including disc shear blade thereby and scrap cutter blade, its In, disc shear blade thereby is used to shear sheet material, and scrap cutter blade is used for what sheet material was shear off by disc shear blade thereby Leftover pieces are crushed;Disc shear blade thereby is a disk, and the outside diameter of the disk is that 430mm, thickness are 40mm, the disk Center is provided with through hole, and through-hole diameter is 215mm;The side surface circumference of disc shear blade thereby is provided with V-groove 1,1 liang of the V-groove Angle between hypotenuse is that the angle in 1 °~1 ° 48 ', the present embodiment between 1 liang of hypotenuse of V-groove takes 1 °.
V-groove 1 is set on the side surface circumference of disc shear blade thereby, and the V-groove 1 makes the shear surface of disc shear blade thereby be cut with waiting The contact angle cut between steel plate is changed into acute angle from right angle, improves the shear effect of disc shear blade thereby shear surface, and prevents thin Small offcut of steel plate is clipped on shear surface, reduces the abrasion of shear surface, extends the service life of disc shear blade thereby;Need Illustrate, applicant contrasts by many experiments and found, it is most that the angle between 1 liang of hypotenuse of V-groove, which is set to 1 °~1 ° 48 ', Good angular range value, angle setting is excessive easily to make occur burr on the steel plate after shearing, and angle sets too small it cannot be guaranteed that cutting The good shear effect of tangent plane.
The manufacture method of the disc shear blade thereby of the present embodiment, comprises the following steps:
Step 1: forging
Disc shear blade thereby is made using blank, and the component of the blank is by weight percentage:C:1.10%, V: 0.45%, W:0.51%, Ti:0.43%, Zr:0.33%, Nb:0.23%, Cr:8.9%, Mo:0.75%, remaining is Fe;
Applicant summarizes by many experiments and found, the blank manufactured using above-mentioned percentage by weight, is difficult in processing Internal stress is produced, overall deformation quantity is smaller, and the improvement of flatness and thickness deviation for disc shear blade thereby finished product is provided effectively Ensure.
Above-mentioned blank is processed as disc first, it is finally bad to hair to carry out then in the bad center holes drilled through of hair Forging processing, obtains that forging hair is bad, and its forging ratio is 6.7, and the heating-up temperature in forging process is:1100℃;
Step 2: annealing
After step one conducting forging processing, rough forging is made annealing treatment, is specially:Rough forging is first loaded into heat Treatment furnace, 850 DEG C are warming up to 15 DEG C/min heating rate, are incubated 2 hours, then by being at the uniform velocity cooled to 390 within 22 hours DEG C, air cooling of finally coming out of the stove;
Step 3: roughing
After step 2 makes annealing treatment, rough forging is made to the workpiece for leaving allowance for finish, is specially:
Periphery, through-hole face and the upper and lower end face of rough forging are processed, the surplus for making rough forging periphery is 1.5mm, The surplus of through-hole face is 1.5mm, and thickness surplus is 1.6mm;
Step 4: quenching
After step 3 roughing processing, Quenching Treatment is carried out to rough forging, its step is:
1. inside heating furnace, is warming up to 600 DEG C DEG C, rough forging is then put into inside heating furnace;
2. inside heating furnace, is warming up to 1100 DEG C with 30 DEG C/min heating rate, 2 hours are incubated, then will forging Blank takes out from inside heating furnace;
3. rough forging, is put into salt bath furnace inside holding 25min, then rough forging is taken out and placed into oil quenching pond, When rough forging is cooled to 100 DEG C, rough forging is taken out;
4. rough forging, is put into inside heating furnace, inside heating furnace is warming up to 550 with 5 DEG C/min heating rate DEG C, 2 hours are incubated, rough forging is taken out and carries out air cooling;
Step 5: tempering
After step 4 Quenching Treatment, temper is carried out to rough forging, its step is:
1. after rough forging, is placed in into the insulation of 540 DEG C of inside heating furnace 3 hours, air cooling of coming out of the stove;
2. after rough forging, is placed in into the insulation of 550 DEG C of inside heating furnace 3 hours, air cooling of coming out of the stove;
3. after rough forging, is placed in into the insulation of 560 DEG C of inside heating furnace 3 hours, air cooling of coming out of the stove obtains hardness for HRC 61.8 rough forging, improves the hardness of disc shear blade thereby finished product so that disc shear blade thereby finished product compressive yield strength is kept Between 2600~3000MPa, possess good anti-pressure ability, add the service life of disc shear blade thereby, meet certain High requirement of a little advanced equipments of high grade and precision sheet materials to shearing quality.
Rough forging is carried out after temper, the inner carbon content of material is less, and in the distribution of fine particle shape, its net The rank of shape carbide is less than 2 grades, then imports cryogenic refrigerator environment (i.e.:Subzero 60 DEG C~subzero 80 DEG C), continue 2 hours deeply Cold treatment, makes retained austenite in material structure completely to martensite transfor mation, effectively remove various in material heat treatment Stress, so as to be effectively improved the anti-yield strength and impact flexibility of disc shear blade thereby finished product.
Step 6: finishing
After step 5 temper, finishing processing is carried out to rough forging, its step is:
1., the periphery and through-hole face of processing rough forging, the outside diameter for making rough forging is 430mm, through-hole diameter For 215mm;
2., by rough forging on vertical grinder, the forging hair that thickness is 40.11mm is obtained after vertical grinder processing Base;
3. thickness, is subjected to first time fine grinding for 40.11mm rough forging, obtaining thickness after the processing of first time fine grinding is 40.7mm rough forging;
4., thickness is mounted on vertical grinder again for 40.7mm rough forging, thickness is obtained after vertical grinder processing For 40.4mm rough forging;
5. thickness, is carried out into second for 40.4mm rough forging to refine, obtaining thickness after second of fine grinding processing is 40.2mm rough forging;
6. thickness, is subjected to third time fine grinding for 40.2mm rough forging, obtaining thickness after the processing of third time fine grinding is 40.1mm rough forging;
7. thickness, is subjected to the 4th fine grinding for 40.1mm rough forging, obtaining thickness after the 4th fine grinding processing is 40.005mm rough forging;
8. thickness, is subjected to the 5th fine grinding for 40.005mm rough forging.
Rough forging finishing passes of the prior art include up to three times and refined, and the rough forging in the present embodiment Altogether by the processing of vertical grinder twice and five fine grindings processing, since second of milled processed, each milled processed is ground Mill amount is within 0.04mm, and the more last reduction 0.01mm of amount of grinding of milled processed every time, it has been found that using this The lapping mode that milled processed+amount of grinding of multiple small amount of grinding successively decreases, can effectively improve disc shear blade thereby finished product Flatness and thickness deviation.
Wherein, the step of the 5th fine grinding is as follows:
A, preparation blade fixing tool:Blade fixing tool is to offer to enclose on disc-shaped structure, the blade fixing tool Around equally distributed 18 blade mounting holes in its center, blade mounting holes are circular cavernous structure, the center of circle of the blade mounting holes Circle center distance with blade fixing tool is 700mm;
B, blade fixing tool of the rough forging installed in step A for being 40.005mm by thickness after the 4th fine grinding processing On, and will be equipped with the blade fixing tool of rough forging and be put on grinder, while adding abrasive, the grinder is flat for fine grinding Surface grinding;Wherein, above-mentioned abrasive is made up of alumina powder, green silicon carbide powder, machine oil and kerosene, wherein, abrasive The particle diameter of middle alumina powder is 50 μm, and the particle diameter of green silicon carbide powder is 10 μm;The preparation process of the abrasive is as follows:
A, weigh alumina powder and machine oil, wherein the mass ratio of alumina powder and machine oil is 2:1, by above-mentioned aluminum oxide Micro mist and machine oil stirring are mixed 25 minutes;
B, weigh green silicon carbide powder and kerosene, wherein the mass ratio of green silicon carbide powder and kerosene is 3:1, will be above-mentioned green Silicon carbide micro-powder and kerosene stirring are mixed 25 minutes;
C, the mixing by green silicon carbide powder and kerosene in the mixture and step b of alumina powder in step a and machine oil Thing stirring mixing 30 minutes, produces abrasive.
Abrasive is the main material that grinding step is used, reasonable of the performance of abrasive and other process conditions Match somebody with somebody, the processing efficiency and surface planarity for grinding part are all had a major impact, if the micro mist particle diameter in abrasive is larger, though So mechanical grinding is conducive to act on, but because effective area is small, grinding efficiency is not high, and to grinding the flatness of piece surface Have a negative impact, if the micro mist particle diameter in abrasive on the contrary is smaller, though the flatness of grinding piece surface can be improved, It is but to be unfavorable for milli machine ablation;In the present embodiment, the particle diameter of alumina powder is 50 μm, green carbonization in abrasive The particle diameter of silicon powder is 10 μm, while by alumina powder, green silicon carbide powder, machine oil and kerosene in abrasive according to certain ratio Example and step mixing, are finally made abrasive finished product, applicant summarizes by a large amount of field experiments and found, using above method system Standby abrasive finished product, is conducive to milli machine to be ground, and grinding efficiency is high, can significantly improve disc shear blade thereby finished surface Flatness, makes the flatness of disc shear blade thereby finished product reach 0.0005mm, this be Common machining techniques of the prior art much It is unapproachable.
Start grinder after the completion of C, step B, the lap speed for controlling grinder is 5r/min, the depressing force of abrasive disk Control as 400N;Grinding stops grinding after 2 minutes, by the rough forging turn-over in blade fixing tool, continues after grinding 2 minutes Stop grinding, be then moved to rough forging in next blade mounting holes according to clockwise direction, repeat above-mentioned turn-over, shifting Dynamic operation;Wherein, rough forging is placed 5 minutes after often grinding 2 minutes, then ground next time;Rough forging the 5th time The total time-consuming of fine grinding is 4.5 hours, and flatness is obtained after the processing of the 5th fine grinding and reaches 0.0005mm, thickness deviation reaches ± 0.0005mm disc shear blade thereby finished product.
In step C, after rough forging is ground in a blade mounting holes, it is moved to according still further to clockwise direction next In blade mounting holes, applicant creatively has found by live many experiments, using it is this by rough forging in certain direction The mode being ground in multiple blade mounting holes lubrication groove streams, can overcome that grinding effect at abrasive disk diverse location is present is micro- Small difference, exactly overcomes the above-mentioned fine difference ignored in existing Common machining techniques, just considerably improves disc shear blade thereby The flatness and thickness deviation of finished product, the disc shear blade thereby manufactured using this method, its flatness can reach 0.0005mm, thick Degree deviation reaches ± 0.0005mm, meets the demand of some advanced equipments of high grade and precision sheet shearings, and this is of the prior art common Process technology is much difficult to expect also unapproachable;Meanwhile, the above-mentioned mode being ground in turn and lap speed, grinding The parameter coordinations such as depressing force, milling time, the blade mounting holes quantity of disk are carried out, and form a specific 5th fine grinding step Suddenly, the key point of the 5th precision grinding step exactly present invention.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, and its difference is:The side surface circumference of disc shear blade thereby is provided with V Angle between type groove 1,1 liang of hypotenuse of the V-groove is 1 ° 48 ';
The manufacture method of the disc shear blade thereby of the present embodiment, comprises the following steps:
Step 1: forging
Disc shear blade thereby is made using blank, and the component of the blank is by weight percentage:C:1.21%, V: 0.67%, W:0.67%, Ti:0.55%, Zr:0.41%, Nb:0.35%, Cr:11.74%, Mo:0.86%, remaining is Fe;
Above-mentioned blank is processed as disc first, it is finally bad to hair to carry out then in the bad center holes drilled through of hair Forging processing, obtains that forging hair is bad, and its forging ratio is 7.5, and the heating-up temperature in forging process is:1200℃;
Step 2: annealing
After step one conducting forging processing, rough forging is made annealing treatment, is specially:Rough forging is first loaded into heat Treatment furnace, 870 DEG C are warming up to 15 DEG C/min heating rate, are incubated 3 hours, then by being at the uniform velocity cooled to 400 within 24 hours DEG C, air cooling of finally coming out of the stove;
Step 3: roughing
After step 2 makes annealing treatment, rough forging is made to the workpiece for leaving allowance for finish, is specially:
Periphery, through-hole face and the upper and lower end face of rough forging are processed, the surplus for making rough forging periphery is 1.5mm, The surplus of through-hole face is 1.5mm, and thickness surplus is 1.6mm;
Step 4: quenching
After step 3 roughing processing, Quenching Treatment is carried out to rough forging, its step is:
1. inside heating furnace, is warming up to 700 DEG C, rough forging is then put into inside heating furnace;
2. inside heating furnace, is warming up to 1150 DEG C with 30 DEG C/min heating rate, 3 hours are incubated, then will forging Blank takes out from inside heating furnace;
3. rough forging, is put into salt bath furnace inside holding 30min, then rough forging is taken out and placed into oil quenching pond, When rough forging is cooled to 120 DEG C, rough forging is taken out;
4. rough forging, is put into inside heating furnace, inside heating furnace is warming up to 600 with 5 DEG C/min heating rate DEG C, 2 hours are incubated, rough forging is taken out and carries out air cooling;
Step 5: tempering
After step 4 Quenching Treatment, temper is carried out to rough forging, its step is:
1. after rough forging, is placed in into the insulation of 550 DEG C of inside heating furnace 4 hours, air cooling of coming out of the stove;
2. after rough forging, is placed in into the insulation of 560 DEG C of inside heating furnace 4 hours, air cooling of coming out of the stove;
3. after rough forging, is placed in into the insulation of 570 DEG C of inside heating furnace 4 hours, air cooling of coming out of the stove obtains hardness for HRC 61.1 rough forging;
Step 6: finishing
After step 5 temper, finishing processing is carried out to rough forging, its step is:
1., the periphery and through-hole face of processing rough forging, the outside diameter for making rough forging is 430mm, through-hole diameter For 215mm;
2., by rough forging on vertical grinder, the forging hair that thickness is 40.11mm is obtained after vertical grinder processing Base;
3. thickness, is subjected to first time fine grinding for 40.11mm rough forging, obtaining thickness after the processing of first time fine grinding is 40.7mm rough forging;
4., thickness is mounted on vertical grinder again for 40.7mm rough forging, thickness is obtained after vertical grinder processing For 40.4mm rough forging;
5. thickness, is carried out into second for 40.4mm rough forging to refine, obtaining thickness after second of fine grinding processing is 40.2mm rough forging;
6. thickness, is subjected to third time fine grinding for 40.2mm rough forging, obtaining thickness after the processing of third time fine grinding is 40.1mm rough forging;
7. thickness, is subjected to the 4th fine grinding for 40.1mm rough forging, obtaining thickness after the 4th fine grinding processing is 40.005mm rough forging;
8., by thickness for 40.005mm rough forging carry out the 5th time fine grinding, wherein, the 5th time fine grinding the step of such as Under:
A, preparation blade fixing tool:Blade fixing tool is to offer to enclose on disc-shaped structure, the blade fixing tool Around equally distributed 18 blade mounting holes in its center, blade mounting holes are circular cavernous structure, the center of circle of the blade mounting holes Circle center distance with blade fixing tool is 700mm;
B, blade fixing tool of the rough forging installed in step A for being 40.005mm by thickness after the 4th fine grinding processing On, and will be equipped with the blade fixing tool of rough forging and be put on grinder, while adding abrasive, the grinder is flat for fine grinding Surface grinding;Wherein, above-mentioned abrasive is made up of alumina powder, green silicon carbide powder, machine oil and kerosene, wherein, abrasive The particle diameter of middle alumina powder is 100 μm, and the particle diameter of green silicon carbide powder is 15 μm;The preparation process of the abrasive is as follows:
A, weigh alumina powder and machine oil, wherein the mass ratio of alumina powder and machine oil is 2.5:1, by above-mentioned oxidation Aluminium micro mist and machine oil stirring are mixed 30 minutes;
B, weigh green silicon carbide powder and kerosene, wherein the mass ratio of green silicon carbide powder and kerosene is 3.5:1, will be above-mentioned Green silicon carbide powder and kerosene stirring are mixed 30 minutes;
C, the mixing by green silicon carbide powder and kerosene in the mixture and step b of alumina powder in step a and machine oil Thing stirring mixing 35 minutes, produces abrasive.
Start grinder after the completion of C, step B, the lap speed for controlling grinder is 7r/min, the depressing force of abrasive disk Control as 450N;Grinding stops grinding after 2 minutes, by the rough forging turn-over in blade fixing tool, continues after grinding 2 minutes Stop grinding, be then moved to rough forging in next blade mounting holes according to counter clockwise direction, repeat above-mentioned turn-over, shifting Dynamic operation;Wherein, rough forging is placed 5 minutes after often grinding 2 minutes, then ground next time;Rough forging the 5th time The total time-consuming of fine grinding is 4 hours, and flatness is obtained after the processing of the 5th fine grinding and reaches 0.0005mm, thickness deviation reaches ± 0.0005mm disc shear blade thereby finished product.
Embodiment 3
The present embodiment is substantially the same manner as Example 1, and its difference is:The side surface circumference of disc shear blade thereby is provided with V Angle between type groove 1,1 liang of hypotenuse of the V-groove is 1 ° 21 ';
The manufacture method of the disc shear blade thereby of the present embodiment, comprises the following steps:
Step 1: forging
Disc shear blade thereby is made using blank, and the component of the blank is by weight percentage:C:1.06%, V: 0.56%, W:0.59%, Ti:0.46%, Zr:0.37%, Nb:0.29%, Cr:10.4%, Mo:0.81%, remaining is Fe;
Above-mentioned blank is processed as disc first, it is finally bad to hair to carry out then in the bad center holes drilled through of hair Forging processing, obtains that forging hair is bad, and its forging ratio is 7, and the heating-up temperature in forging process is:1150℃;
Step 2: annealing
After step one conducting forging processing, rough forging is made annealing treatment, is specially:Rough forging is first loaded into heat Treatment furnace, 860 DEG C are warming up to 15 DEG C/min heating rate, are incubated 2.5 hours, then by being at the uniform velocity cooled within 23 hours 395 DEG C, air cooling of finally coming out of the stove;
Step 3: roughing
After step 2 makes annealing treatment, rough forging is made to the workpiece for leaving allowance for finish, is specially:
Periphery, through-hole face and the upper and lower end face of rough forging are processed, the surplus for making rough forging periphery is 1.5mm, The surplus of through-hole face is 1.5mm, and thickness surplus is 1.6mm;
Step 4: quenching
After step 3 roughing processing, Quenching Treatment is carried out to rough forging, its step is:
1. inside heating furnace, is warming up to 650 DEG C, rough forging is then put into inside heating furnace;
2. inside heating furnace, is warming up to 1125 DEG C with 30 DEG C/min heating rate, 2.5 hours are incubated, then will forging Blank is made to take out from inside heating furnace;
3. rough forging, is put into salt bath furnace inside holding 27min, then rough forging is taken out and placed into oil quenching pond, When rough forging is cooled to 110 DEG C, rough forging is taken out;
4. rough forging, is put into inside heating furnace, inside heating furnace is warming up to 570 with 5 DEG C/min heating rate DEG C, 2 hours are incubated, rough forging is taken out and carries out air cooling;
Step 5: tempering
After step 4 Quenching Treatment, temper is carried out to rough forging, its step is:
1. after rough forging, is placed in into the insulation of 545 DEG C of inside heating furnace 3.5 hours, air cooling of coming out of the stove;
2. after rough forging, is placed in into the insulation of 555 DEG C of inside heating furnace 3.5 hours, air cooling of coming out of the stove;
3. after rough forging, is placed in into the insulation of 565 DEG C of inside heating furnace 3.5 hours, air cooling of coming out of the stove, obtaining hardness is HRC61.47 rough forging;
Step 6: finishing
After step 5 temper, finishing processing is carried out to rough forging, its step is:
1., the periphery and through-hole face of processing rough forging, the outside diameter for making rough forging is 430mm, through-hole diameter For 215mm;
2., by rough forging on vertical grinder, the forging hair that thickness is 40.11mm is obtained after vertical grinder processing Base;
3. thickness, is subjected to first time fine grinding for 40.11mm rough forging, obtaining thickness after the processing of first time fine grinding is 40.7mm rough forging;
4., thickness is mounted on vertical grinder again for 40.7mm rough forging, thickness is obtained after vertical grinder processing For 40.4mm rough forging;
5. thickness, is carried out into second for 40.4mm rough forging to refine, obtaining thickness after second of fine grinding processing is 40.2mm rough forging;
6. thickness, is subjected to third time fine grinding for 40.2mm rough forging, obtaining thickness after the processing of third time fine grinding is 40.1mm rough forging;
7. thickness, is subjected to the 4th fine grinding for 40.1mm rough forging, obtaining thickness after the 4th fine grinding processing is 40.005mm rough forging;
8., by thickness for 40.005mm rough forging carry out the 5th time fine grinding, wherein, the 5th time fine grinding the step of such as Under:
A, preparation blade fixing tool:Blade fixing tool is to offer to enclose on disc-shaped structure, the blade fixing tool Around equally distributed 18 blade mounting holes in its center, blade mounting holes are circular cavernous structure, the center of circle of the blade mounting holes Circle center distance with blade fixing tool is 700mm;
B, blade fixing tool of the rough forging installed in step A for being 40.005mm by thickness after the 4th fine grinding processing On, and will be equipped with the blade fixing tool of rough forging and be put on grinder, while adding abrasive, the grinder is flat for fine grinding Surface grinding;Wherein, above-mentioned abrasive is made up of alumina powder, green silicon carbide powder, machine oil and kerosene, wherein, abrasive The particle diameter of middle alumina powder is 75 μm, and the particle diameter of green silicon carbide powder is 13 μm;The preparation process of the abrasive is as follows:
A, weigh alumina powder and machine oil, wherein the mass ratio of alumina powder and machine oil is 2.2:1, by above-mentioned oxidation Aluminium micro mist and machine oil stirring are mixed 27 minutes;
B, weigh green silicon carbide powder and kerosene, wherein the mass ratio of green silicon carbide powder and kerosene is 3.3:1, will be above-mentioned Green silicon carbide powder and kerosene stirring are mixed 27 minutes;
C, the mixing by green silicon carbide powder and kerosene in the mixture and step b of alumina powder in step a and machine oil Thing stirring mixing 32 minutes, produces abrasive.
Start grinder after the completion of C, step B, the lap speed for controlling grinder is 6r/min, the depressing force of abrasive disk Control as 425N;Grinding stops grinding after 2 minutes, by the rough forging turn-over in blade fixing tool, continues after grinding 2 minutes Stop grinding, be then moved to rough forging in next blade mounting holes according to clockwise or counterclockwise, weight Multiple above-mentioned turn-over, moving operation;Wherein, rough forging is placed 5 minutes after often grinding 2 minutes, then ground next time;Forging The total time-consuming for making the 5th fine grinding of blank is 4.9 hours, and obtaining flatness after the 5th fine grinding processing reaches 0.0005mm, thickness Deviation reaches ± 0.0005mm disc shear blade thereby finished product.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative Similar frame mode and embodiment, all should belong to protection scope of the present invention.

Claims (3)

1. a kind of end trimming shears blade unit, it is characterised in that:Including disc shear blade thereby and scrap cutter blade, wherein, disc scissors Piece is used to shear sheet material, and scrap cutter blade is used to break the leftover pieces that sheet material is shear off by disc shear blade thereby It is broken;The disc shear blade thereby is a disk, and the center of the disk is provided with through hole, and the side surface circumference of disc shear blade thereby is provided with V-groove (1);Wherein, the manufacture method of disc shear blade thereby comprises the following steps:
Step 1: forging
Disc shear blade thereby is made using blank, and the component of the blank is by weight percentage:C:1.10~1.21%, V:0.45 ~0.67%, W:0.51~0.67%, Ti:0.43~0.55%, Zr:0.33~0.41%, Nb:0.23~0.35%, Cr: 8.9~11.74%, Mo:0.75~0.86%, remaining is Fe;
Above-mentioned blank is processed as disc first, then in the bad center holes drilled through of hair, finally hair bad progress forged Processing, obtain forging hair it is bad, its forging ratio be 6.7~7.5;
Step 2: annealing
After step one conducting forging processing, rough forging is made annealing treatment, is specially:First rough forging is loaded and is heat-treated Stove, 850~870 DEG C are warming up to 15 DEG C/min heating rate, are incubated 2~3 hours, then at the uniform velocity cold by 22~24 hours But to 390~400 DEG C, air cooling of finally coming out of the stove;
Step 3: roughing
After step 2 makes annealing treatment, rough forging is made to the workpiece for leaving allowance for finish, is specially:
Periphery, through-hole face and the upper and lower end face of rough forging are processed, the surplus for making rough forging periphery is 1.5mm, through hole The surplus in face is 1.5mm, and thickness surplus is 1.6mm;
Step 4: quenching
After step 3 roughing processing, Quenching Treatment is carried out to rough forging, its step is:
1. inside heating furnace, is warming up to 600~700 DEG C, rough forging is then put into inside heating furnace;
2. inside heating furnace, is warming up to 1100~1150 DEG C with 30 DEG C/min heating rate, 2~3 hours are incubated, then will Rough forging takes out from inside heating furnace;
3. rough forging, is put into salt bath furnace 25~30min of inside holding, then rough forging is taken out and placed into oil quenching pond, When rough forging is cooled to 100~120 DEG C, rough forging is taken out;
4. rough forging, is put into inside heating furnace, inside heating furnace is warming up to 550~600 with 5 DEG C/min heating rate DEG C, 2 hours are incubated, rough forging is taken out and carries out air cooling;
Step 5: tempering
After step 4 Quenching Treatment, temper is carried out to rough forging, its step is:
1. after rough forging, is placed in into the insulation of 540~550 DEG C of inside heating furnace 3~4 hours, air cooling of coming out of the stove;
2. after rough forging, is placed in into the insulation of 550~560 DEG C of inside heating furnace 3~4 hours, air cooling of coming out of the stove;
3. after rough forging, is placed in into the insulation of 560~570 DEG C of inside heating furnace 3~4 hours, air cooling of coming out of the stove;
Step 6: finishing
After step 5 temper, finishing processing is carried out to rough forging, its step is:
1., the periphery and through-hole face of processing rough forging, the outside diameter for making rough forging is that 430mm, through-hole diameter are 215mm;
2., by rough forging on vertical grinder, the rough forging that thickness is 40.11mm is obtained after vertical grinder processing;
3. thickness, is subjected to first time fine grinding for 40.11mm rough forging, obtaining thickness after the processing of first time fine grinding is 40.7mm rough forging;
4. thickness, is obtained into thickness on vertical grinder, after vertical grinder processing again for 40.7mm rough forging is 40.4mm rough forging;
5. thickness, is carried out into second for 40.4mm rough forging to refine, obtaining thickness after second of fine grinding processing is 40.2mm rough forging;
6. thickness, is subjected to third time fine grinding for 40.2mm rough forging, obtaining thickness after the processing of third time fine grinding is 40.1mm rough forging;
7. thickness, is subjected to the 4th fine grinding for 40.1mm rough forging, obtaining thickness after the 4th fine grinding processing is 40.005mm rough forging;
8. thickness, is subjected to the 5th fine grinding for 40.005mm rough forging, obtaining flatness after the 5th fine grinding processing reaches To 0.0005mm, thickness deviation reaches ± 0.0005mm disc shear blade thereby finished product.
2. end trimming shears blade unit according to claim 1, it is characterised in that:Folder between the hypotenuse of V-groove (1) two Angle is 1 °~1 ° 48 ';
In step 6, the 5th time as follows the step of fine grinding:
A, preparation blade fixing tool:Blade fixing tool is to be offered on disc-shaped structure, the blade fixing tool around it Equally distributed 18 blade mounting holes in center, blade mounting holes are circular cavernous structure, the center of circle of the blade mounting holes and knife The circle center distance of piece fixing tool is 700mm;
B, the rough forging for being 40.005mm by thickness after the 4th fine grinding processing are arranged on step A blade fixing tool, And will be equipped with the blade fixing tool of rough forging and be put on grinder, while adding abrasive, the grinder is finished plane Grinder;
Start grinder after the completion of C, step B, the lap speed for controlling grinder is 5~7r/min, the depressing force of abrasive disk Control as 400~450N;Grinding stops grinding after 2 minutes, by the rough forging turn-over in blade fixing tool, continues to grind 2 Stop grinding after minute, rough forging is then moved to next blade mounting holes according to clockwise or counterclockwise It is interior, repeat above-mentioned turn-over, moving operation;Wherein, rough forging is placed 5 minutes after often grinding 2 minutes, then ground next time Mill;The total time-consuming of the 5th fine grinding of rough forging is 4~5 hours.
3. end trimming shears blade unit according to claim 1, it is characterised in that:The outside diameter of the disc shear blade thereby is 430mm, through-hole diameter is 215mm, and thickness is 40mm;
In 5th fine grinding of step 6, step B abrasive is by alumina powder, green silicon carbide powder, machine oil and kerosene group Into the preparation process of the abrasive is as follows:
A, weigh alumina powder and machine oil, wherein the mass ratio of alumina powder and machine oil is 2~2.5:1, by above-mentioned oxidation Aluminium micro mist and machine oil stirring are mixed 25~30 minutes;
B, weigh green silicon carbide powder and kerosene, wherein the mass ratio of green silicon carbide powder and kerosene is 3~3.5:1, will be above-mentioned Green silicon carbide powder and kerosene stirring are mixed 25~30 minutes;
C, the mixture of green silicon carbide powder and kerosene in the mixture and step b of alumina powder in step a and machine oil stirred Mix mixing 30~35 minutes, produce abrasive.
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