CN102189390A - Method for producing scrape cutter blade - Google Patents
Method for producing scrape cutter blade Download PDFInfo
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- CN102189390A CN102189390A CN 201110089792 CN201110089792A CN102189390A CN 102189390 A CN102189390 A CN 102189390A CN 201110089792 CN201110089792 CN 201110089792 CN 201110089792 A CN201110089792 A CN 201110089792A CN 102189390 A CN102189390 A CN 102189390A
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Abstract
The invention discloses a method for producing a scrape cutter blade and belongs to the field of cutter manufacturing. The method comprises the following steps of: selecting H13 steel, cutting blank which has a shape of a parallel hexahedron, forging and performing heat treatment to ensure that the hardness HRC of a workpiece reaches 52 to 55, processing the top, the sides and the bottom of the workpiece by using a lathe and a milling machine to ensure that the external diameter of the workpiece is equal to the sum of the external diameter of a finished product and 25+/-2mm, drilling the center of the workpiece, remaining the excess amount and grinding, performing forward and reverse bidirectional accurate grinding on the working edge surface by using an arc grinding wheel, performing accurate grinding on the central hole of the blade to reach the size and the surface roughness which are required by a drawing, and finally inspecting and putting in storage. The produced scrape cutter blade reduces the blade load in the process of cutting, the impact load of the cutter edge, avoids the phenomena of blockage, blade bending, tipping and chipping and the phenomenon that the hardness of the blade is reduced so that the blade is worn too quickly, and has a good using effect.
Description
Technical field
The invention belongs to cutter and make manufacture field, particularly a kind of production method of scrap cutter blade.
Background technology
Scrap cutter is the nucleus equipment of Medium and Heavy Plate Rolling Production line, can substitute rolling-cut double side shear in the Heavy Plate Production line.For the Heavy Plate Production line of middle-size and small-size iron and steel enterprise, use scrap cutter to can be enterprise and bring considerable economic.Scrap cutter is positioned at circle shear in the Heavy Plate Production line after, be used to shear the slitter edge that circle shear is cut, help slitter edge and collect and reclaim.
The scrap cutter blade is the core of scrap cutter, and it can finish the shearing work of steel plate.Shear blade is installed on the cutterhead, and cutterhead is loaded on the cutter axis, and cutter axis is driven by shaft coupling by main driven by motor reductor, thereby realizes the rotational shear action of cutterhead.Scrap cutter has some common problems in actual use, and topmost problem is that the cutting edge life-span is shorter, and its main cause is the crudy of scrap cutter.Must in time obtain behind the cutting edge tipping changing, otherwise " glutinous cutter " occur, can only shut down processing this moment.Frequent shutdown has a strong impact on rhythm of production.From the cutting edge material object of pulling down, the cutting edge localized delamination is main phenomenon.Causing the main cause that the cutting edge cutting edge peels off is that early fatigue causes.Cause the short principal element of scrap cutter blade life, except the selection of cutting edge self with shear the mechanical property of material, also have the processing technology of scrap cutter blade.In a word, existing scrap cutter blade shear produce in poor reliability and service life short, poor to the restriction ability of processing work when shearing, clogging appears in scrap cutter easily in shear history.
The patent No. is that 98219098.0 Chinese patent " scrap cutter " discloses a kind of scrap cutter, it has blade, voussoir, rotary drum and power transmission shaft, on two power transmission shafts that be arranged in parallel a rotary drum is installed respectively, blade is installed in the axial groove that the rotary drum circumferential surface offers, fix by voussoir, one steel spring plate that is the arc surface projection respectively is installed between the two adjacent blades on the rotary drum, and its height of projection is higher than blade blade place circumference height.Though this patent has solved the clogging that occurs easily in the shear history to a certain extent, effect is also not obvious.Simultaneously application number is the production technology of 201010196263.6 the unexposed blade of Chinese patent " cambered blade ", especially in heat treatment and grinding technique, fail to set forth crucial technical essential, and these critical processes are to improve the scrap cutter result of use and the conclusive technology in life-span; Simultaneously on to the H13 Heat-Treatment of Steel, 550 ℃ of temper annealings are mostly adopted in market, and toughness is relatively poor, causes the cutter workpiece to descend service life.
Summary of the invention
Technical problem solved by the invention is to provide a kind of production method of simple scrap cutter blade, the blade that utilizes this method to produce strengthens service life greatly, and obstruction, the blade that can effectively solve appearance aborning lost, tipping falls the piece phenomenon.
The technical solution that realizes the object of the invention is: a kind of production method of scrap cutter blade may further comprise the steps:
Step 1, material are chosen, and choose H13(4Cr5MoSiV1) steel are as raw material;
Step 2, blanking are cut the above-mentioned material steel of choosing, and cut out the blank of parallel hexahedron from steel;
Step 3, the blank of well cutting is carried out conducting forging processing, to pulling out behind the blank elder generation jumping-up, three upset three pulls out forging ratio 〉=2.5;
Step 4, the material that forges is heat-treated;
Step 5, end face, side and the bottom surface of using lathe and milling machine processing work make workpiece external diameter=finished product external diameter+25 ± 2mm;
Step 6, drill through the hole, use bore mode to hole the made allowance grinding in workpiece centre;
Step 7, grinding utilize the positive and negative two-way correct grinding work edge face of arc wheel, blade facets are ground to size and the surface roughness that needs; The central through hole correct grinding of blade makes it meet the requirements of size and surface roughness;
Step 8, carry out subsequent treatment, antirust oil is cleaned, is coated with to the blade after the grinding, finish the processing of blade.
The present invention compared with prior art, its remarkable advantage is: the needs that can satisfy medium and small cutter manufacturing enterprise production plurality of specifications product; Effectively improve the reliability and the service life of the processing of scrap cutter blade.The scrap cutter blade that utilizes the inventive method to produce lowers shearing force in shear history, reduce the impact load of cutting edge, can not occur stopping up, blade is lost, tipping falls the piece phenomenon, blade also do not occur and reduces the rapid wear phenomenon because of hardness.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is the production method flow chart of scrap cutter blade of the present invention.
Fig. 2 is the vertical view of the scrap cutter blade of use the present invention production.
Fig. 3 is A-A profile among the scrap cutter blade Fig. 2 that uses the present invention's production.
Fig. 4 is B-B profile among the scrap cutter blade Fig. 2 that uses the present invention's production.
The specific embodiment
In conjunction with Fig. 1, the production method of a kind of scrap cutter blade of the present invention may further comprise the steps:
Step 1, material are chosen, and choose H13(4Cr5MoSiV1) steel are as raw material;
Step 2, blanking are cut the above-mentioned material steel of choosing, and cut out the blank of parallel hexahedron from steel;
Step 3, the blank of well cutting is carried out conducting forging processing, to pulling out behind the blank elder generation jumping-up, three upset three pulls out forging ratio 〉=2.5; During conducting forging processing, initial forging temperature is 1119 ℃, and final forging temperature is 850 ℃; Advance the stove preheating during 500 ℃ ± 20 ℃ of blanks, heat up after 3 hours, be warmed up to 850 ℃, be incubated 10 minutes, guarantee evenly to grill thoroughly, be heated to 1119 ℃ then, be incubated the 60min forging of coming out of the stove with 49 ℃ firing rate per hour;
Step 4, the material that forges is heat-treated; Adopt 980-1020 ℃ of hardening heat, oil cooling afterwards, 260 ± 10 ℃ of tempering two to three times, oil cooling once more, hardness HRC=52-55;
Step 5, end face, side and the bottom surface of using lathe and milling machine processing work make workpiece external diameter=finished product external diameter+25 ± 2mm;
Step 6, drill through the hole, use bore mode to hole the made allowance grinding in workpiece centre;
Step 7, grinding utilize the positive and negative two-way correct grinding work edge face of arc wheel, blade facets are ground to size and the surface roughness that needs; The central through hole correct grinding of blade makes it meet the requirements of size and surface roughness; Described arc wheel is to be 2011200723657 dresser finishing by application number.Blade facets surface roughness after the grinding is preferably 1.6, and the central through hole surface roughness of blade is preferably 6.4;
Step 8, carry out subsequent treatment, antirust oil is cleaned, is coated with to the blade after the grinding, finish the processing of blade.
The present invention passes through cutter material H13 steel, 270 ± 10 ℃ of tempering two to three times, oil cooling, reach the hardness of cutter requirement, improved the toughness of workpiece simultaneously, blade is not prone to lose, tipping falls the piece phenomenon, do not occur blade yet and reduce the rapid wear phenomenon because of hardness, request for utilization simultaneously number is the radian wheel grinding processing blade that 2011200723657 dresser is repaired, and has improved the precision of blade, makes and is not prone to the obstruction situation in the work.
In conjunction with Fig. 2, Fig. 3, Fig. 4, use the present invention to produce the scrap cutter blade, the integral body of blade 1 is hexahedron, bottom surface 3 is a parallelogram, four sides are vertical with the bottom surface, the three-dimensional circular arc of end face 2 for raising up, the center of end face has through hole 4, and screw rod passes this through hole blade is fixed on the tool rest.The last aperture of end face central through hole 4 is greater than following aperture.The arc radius R of end face 2 is 3700mm.The angle of adjacent two the side elongated surfaces of blade is 75 °.Side 5 is a parallelogram, and the surface roughness on blade work surface is 1.6, and other faces are 6.4.
Below in conjunction with embodiment the present invention is done further detailed description:
Embodiment 1
When producing the scrap cutter blade, at first choose H13(4Cr5MoSiV1) steel are as raw material; Afterwards the above-mentioned material steel of choosing are cut, from steel, cut out the blank of parallel hexahedron; Then forge, initial forging temperature is 1119 ℃, and final forging temperature is 850 ℃; Advance the stove preheating during 500 ℃ of blanks, heat up after 3 hours, be warmed up to 850 ℃, be incubated 10 minutes, guarantee evenly to grill thoroughly, be heated to 1119 ℃ then, be incubated the 60min forging of coming out of the stove with 49 ℃ firing rate per hour.Then the material that forges is heat-treated; Adopt 1000 ℃ of hardening heats, oil cooling afterwards, 260 ℃ of tempering secondaries, oil cooling once more, hardness HRC=53.Use end face, side and the bottom surface of lathe and milling machine processing work at last, make workpiece external diameter=finished product external diameter+25 ± 2mm; Use bore mode to hole the made allowance grinding in workpiece centre; Grinding, the blade facets surface roughness after the grinding is 1.6, the central through hole surface roughness of blade is 6.4.Antirust oil is cleaned, is coated with to blade after the grinding, finish the processing of blade.
In conjunction with Fig. 2, Fig. 3, the blade of making is whole to be hexahedron, working face is three-dimensional circular arc, arc radius R is 3700mm, the side, two ends is a parallelogram, and the side, two ends is 15 ° with the axial angle α that tool rest is installed, and the bottom of blade is the plane, the center of blade has through hole, is connected with tool rest by screw rod.
When utilizing the scrap cutter blade of above-mentioned production that the 3mm steel plate is sheared, blade is installed on the tool rest by screw rod, when tool rest rotates, the each point of blade work face contacts with steel plate gradually, shear, the blade of scrap cutter carries out one and cuts off and finish shearing work gradually, and appearance is stopped up in the work, blade is lost, tipping falls the piece phenomenon, blade also do not occur and reduce the rapid wear phenomenon because of hardness, result of use is fine.
Embodiment 2
When producing the scrap cutter blade, at first choose H13(4Cr5MoSiV1) steel are as raw material; Afterwards the above-mentioned material steel of choosing are cut, from steel, cut out the blank of parallel hexahedron; Then forge, initial forging temperature is 1119 ℃, and final forging temperature is 850 ℃; Advance the stove preheating during 520 ℃ of blanks, heat up after 3 hours, be warmed up to 850 ℃, be incubated 10 minutes, guarantee evenly to grill thoroughly, be heated to 1119 ℃ then, be incubated the 60min forging of coming out of the stove with 49 ℃ firing rate per hour.Then the material that forges is heat-treated; Adopt 980 ℃ of hardening heats, oil cooling afterwards, 255 ℃ of tempering secondaries, oil cooling once more, hardness HRC=54.Use end face, side and the bottom surface of lathe and milling machine processing work at last, make workpiece external diameter=finished product external diameter+25 ± 2mm; Use bore mode to hole the made allowance grinding in workpiece centre; Grinding, the blade facets surface roughness after the grinding is 1.6, the central through hole surface roughness of blade is 6.4.Antirust oil is cleaned, is coated with to blade after the grinding, finish the processing of blade.
When utilizing the blade of above-mentioned production that the 9mm steel plate is sheared, blade is installed on the tool rest by screw rod, when tool rest rotates, the each point of blade work face contacts with steel plate gradually, shear, the blade of scrap cutter carries out one and cuts off and finish shearing work gradually, and appearance is stopped up in the work, blade is lost, tipping falls the piece phenomenon, blade also do not occur and reduce the rapid wear phenomenon because of hardness, result of use is fine.
Embodiment 3
When producing the scrap cutter blade, at first choose H13(4Cr5MoSiV1) steel are as raw material; Afterwards the above-mentioned material steel of choosing are cut, from steel, cut out the blank of parallel hexahedron; Then forge, initial forging temperature is 1119 ℃, and final forging temperature is 850 ℃; Advance the stove preheating during 499 ℃ of blanks, heat up after 3 hours, be warmed up to 850 ℃, be incubated 10 minutes, guarantee evenly to grill thoroughly, be heated to 1119 ℃ then, be incubated the 60min forging of coming out of the stove with 49 ℃ firing rate per hour.Then the material that forges is heat-treated; Adopt 980 ℃ of hardening heats, oil cooling afterwards, 265 ℃ of tempering three times, oil cooling once more, hardness HRC=55.Use end face, side and the bottom surface of lathe and milling machine processing work at last, make workpiece external diameter=finished product external diameter+25 ± 2mm; Use bore mode to hole the made allowance grinding in workpiece centre; Grinding, the blade facets surface roughness after the grinding is 1.6, the central through hole surface roughness of blade is 6.4.Antirust oil is cleaned, is coated with to blade after the grinding, finish the processing of blade.
When utilizing the blade of above-mentioned production that the 14mm steel plate is sheared, blade is installed on the tool rest by screw rod, when tool rest rotates, the each point of blade work face contacts with steel plate gradually, shear, the blade of scrap cutter carries out one and cuts off and finish shearing work gradually, and appearance is stopped up in the work, blade is lost, tipping falls the piece phenomenon, blade also do not occur and reduce the rapid wear phenomenon because of hardness, result of use is obvious.
By the foregoing description as can be known, the present invention can satisfy the needs of medium-sized and small enterprises production plurality of specifications product, and effectively lower shearing force by the production method of design scrap cutter blade, reduce the impact load of cutting edge, the reliability and the service life of improving the scrap cutter blade greatly.
Claims (4)
1. the production method of a scrap cutter blade is characterized in that, may further comprise the steps:
Step 1, material are chosen, and choose the H13 steel as raw material;
Step 2, blanking are cut the above-mentioned material steel of choosing, and cut out the blank of parallel hexahedron from steel;
Step 3, the blank of well cutting is carried out conducting forging processing, to pulling out behind the blank elder generation jumping-up, three upset three pulls out forging ratio 〉=2.5;
Step 4, the material that forges is heat-treated;
Step 5, end face, side and the bottom surface of using lathe and milling machine processing work make workpiece external diameter=finished product external diameter+25 ± 2mm;
Step 6, drill through the hole, use bore mode to hole the made allowance grinding in workpiece centre;
Step 7, grinding utilize the positive and negative two-way correct grinding work edge face of arc wheel, blade facets are ground to size and the surface roughness that needs; The central through hole correct grinding of blade makes it meet the requirements of size and surface roughness;
Step 8, carry out subsequent treatment, antirust oil is cleaned, is coated with to the blade after the grinding, finish the processing of blade.
2. the production method of scrap cutter blade according to claim 1 is characterized in that, when the blank of step 3 pair well cutting carried out conducting forging processing, initial forging temperature was 1119 ℃, and final forging temperature is 850 ℃; Advance the stove preheating during 500 ℃ ± 20 ℃ of blanks, heat up after 3 hours, be warmed up to 850 ℃, be incubated 10 minutes, guarantee evenly to grill thoroughly, be heated to 1119 ℃ then, be incubated the 60min forging of coming out of the stove with 49 ℃ firing rate per hour.
3. the production method of scrap cutter blade according to claim 1 is characterized in that, when the step 4 pair material that forging is good is heat-treated, adopt 980-1020 ℃ of hardening heat, oil cooling afterwards, 260 ± 10 ℃ of tempering two to three times, oil cooling once more, hardness HRC=52-55.
4. the production method of scrap cutter blade according to claim 1 is characterized in that, the blade facets surface roughness after step 7 grinding is 1.6, and the central through hole surface roughness of blade is 6.4.
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| CN 201110089792 CN102189390B (en) | 2011-04-12 | 2011-04-12 | Method for producing scrape cutter blade |
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| CN 201110089792 CN102189390B (en) | 2011-04-12 | 2011-04-12 | Method for producing scrape cutter blade |
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| CN102189390B CN102189390B (en) | 2013-04-10 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489965A (en) * | 2011-12-15 | 2012-06-13 | 昆山恒源机械制造有限公司 | Machining method for plate-covering machine for VVT (variable valve timing) system of automobile engine |
| CN103433551A (en) * | 2013-09-04 | 2013-12-11 | 马鞍山市恒利达机械刀片有限公司 | Swinging type concave-convex shear blade and manufacturing method thereof |
| CN103624813A (en) * | 2013-11-22 | 2014-03-12 | 福建大吉刀剪五金有限公司 | Common scissors and manufacturing method thereof |
| CN105014338A (en) * | 2015-08-14 | 2015-11-04 | 安徽省凌锋冶金机械有限公司 | Edge cutting shear blade combination |
| CN105127704A (en) * | 2015-09-21 | 2015-12-09 | 安庆创跃电器有限公司 | Technology for polishing cutting edge of trimming blade |
| CN105127705A (en) * | 2015-09-21 | 2015-12-09 | 安庆创跃电器有限公司 | Trimming blade forging technology |
| CN106271492A (en) * | 2016-08-31 | 2017-01-04 | 马鞍山市恒泰重工机械有限公司 | A kind of broken limit cutter machining method of curved edge |
| CN106271491A (en) * | 2016-08-31 | 2017-01-04 | 马鞍山市恒泰重工机械有限公司 | A kind of scrap cutter processing method |
| CN106825738A (en) * | 2016-11-10 | 2017-06-13 | 内蒙古包钢钢联股份有限公司 | A kind of double-sided shear blades replacing options |
| CN107838955A (en) * | 2017-10-19 | 2018-03-27 | 福建大吉刀剪五金有限公司 | A kind of yarn is cut and its manufacture method |
| CN109318330A (en) * | 2017-07-20 | 2019-02-12 | 安徽省凌锋冶金机械有限公司 | The blade and its processing method of chipper composite blade |
| CN110181241A (en) * | 2019-06-25 | 2019-08-30 | 李坚 | A kind of blade production technology |
| CN110373609A (en) * | 2019-08-16 | 2019-10-25 | 阳信东泰精密金属有限公司 | A technique for producing the tool part blank of shearing thin-walled steel plate with casting method |
| CN110561060A (en) * | 2019-10-11 | 2019-12-13 | 安徽省凌锋冶金机械有限公司 | method for processing edge surface of scrap shear |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102489965A (en) * | 2011-12-15 | 2012-06-13 | 昆山恒源机械制造有限公司 | Machining method for plate-covering machine for VVT (variable valve timing) system of automobile engine |
| CN103433551A (en) * | 2013-09-04 | 2013-12-11 | 马鞍山市恒利达机械刀片有限公司 | Swinging type concave-convex shear blade and manufacturing method thereof |
| CN103433551B (en) * | 2013-09-04 | 2015-09-09 | 马鞍山市恒利达机械刀片有限公司 | The manufacture method of the concavo-convex shear blade of a kind of pendulum-type |
| CN103624813A (en) * | 2013-11-22 | 2014-03-12 | 福建大吉刀剪五金有限公司 | Common scissors and manufacturing method thereof |
| CN105014338A (en) * | 2015-08-14 | 2015-11-04 | 安徽省凌锋冶金机械有限公司 | Edge cutting shear blade combination |
| CN105127704A (en) * | 2015-09-21 | 2015-12-09 | 安庆创跃电器有限公司 | Technology for polishing cutting edge of trimming blade |
| CN105127705A (en) * | 2015-09-21 | 2015-12-09 | 安庆创跃电器有限公司 | Trimming blade forging technology |
| CN106271491A (en) * | 2016-08-31 | 2017-01-04 | 马鞍山市恒泰重工机械有限公司 | A kind of scrap cutter processing method |
| CN106271492A (en) * | 2016-08-31 | 2017-01-04 | 马鞍山市恒泰重工机械有限公司 | A kind of broken limit cutter machining method of curved edge |
| CN106271491B (en) * | 2016-08-31 | 2018-07-17 | 马鞍山市恒泰重工机械有限公司 | A kind of scrap cutter processing method |
| CN106271492B (en) * | 2016-08-31 | 2018-11-06 | 马鞍山市恒泰重工机械有限公司 | A kind of broken side cutter machining method of curved edge |
| CN106825738A (en) * | 2016-11-10 | 2017-06-13 | 内蒙古包钢钢联股份有限公司 | A kind of double-sided shear blades replacing options |
| CN109318330A (en) * | 2017-07-20 | 2019-02-12 | 安徽省凌锋冶金机械有限公司 | The blade and its processing method of chipper composite blade |
| CN107838955A (en) * | 2017-10-19 | 2018-03-27 | 福建大吉刀剪五金有限公司 | A kind of yarn is cut and its manufacture method |
| CN110181241A (en) * | 2019-06-25 | 2019-08-30 | 李坚 | A kind of blade production technology |
| CN110373609A (en) * | 2019-08-16 | 2019-10-25 | 阳信东泰精密金属有限公司 | A technique for producing the tool part blank of shearing thin-walled steel plate with casting method |
| CN110373609B (en) * | 2019-08-16 | 2021-03-09 | 阳信东泰精密金属有限公司 | Casting method of tool part blank for producing shearing thin-wall steel plate |
| CN110561060A (en) * | 2019-10-11 | 2019-12-13 | 安徽省凌锋冶金机械有限公司 | method for processing edge surface of scrap shear |
| CN110561060B (en) * | 2019-10-11 | 2020-07-17 | 安徽省凌锋冶金机械有限公司 | Method for processing edge surface of scrap shear |
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| CN102189390B (en) | 2013-04-10 |
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