CN104015018A - Method for manufacturing cutter shafts of longitudinally-shearing disc scissors - Google Patents
Method for manufacturing cutter shafts of longitudinally-shearing disc scissors Download PDFInfo
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- CN104015018A CN104015018A CN201410153111.6A CN201410153111A CN104015018A CN 104015018 A CN104015018 A CN 104015018A CN 201410153111 A CN201410153111 A CN 201410153111A CN 104015018 A CN104015018 A CN 104015018A
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Abstract
The invention provides a method for manufacturing cutter shafts of longitudinally-shearing disc scissors. The method includes the steps of material selection, rough machining, thermal treatment, center hole lapping, external circle accurate grinding, polishing and combination of a reasonable thermal treatment procedure (quenching and tempering, high-temperature tempering, low-temperature tempering and oil boiling), surface nitrogen treatment, a three-time center hole lapping and grinding technology (rough grinding, semi-accurate grinding, rounding, accurate grinding and fine grinding) and a grinding and polishing technology, so that the longitudinally-shearing disc scissors is in a high accuracy state in the process of production, a machining and manufacturing technical method without deformation and abrasion is conducted, through technological innovation of a measurement method and bold development of a measurement instrument in the manufacturing process, the high-accuracy cutter shafts of the longitudinally-shearing disc scissors are measured through a pneumatic measurement instrument according to the comparative measurement method, and the error of the two cutter shafts with the diameter absolute error within 0.002 mm is measured. By the adoption of the high-accuracy cutter shafts manufactured through the method and the technological process, key indexes such as the diameter tolerance and the roundness of the cutter shafts can reach and even exceed technical indexes of cutter shafts of import disc scissors.
Description
Technical field
The present invention relates to a kind of high accuracy cutter shaft process program and flow process in steel rolling equipment, especially a kind of manufacture method of slitting circle shear cutter shaft.
Background technology
Slitting circle shear is the finishing production line nucleus equipment that wide strip is become to many arrowbands by multipair rotary cutter edge longitudinal shear, its required precision is high: cutting edge end face run-out is no more than 0.006mm, cutter shaft circular runout is no more than 0.002mm, and the sideshake minimum of cutting edge is 0.015mm.Nearly 30 years and after liberation silicon sheet plant that new China builds produce the slitting circle shear dependence on import always of high name oriented silicon steel and non-orientation silicon steel, be mainly that the high accuracy cutter shaft (typical slender axles) of slitting circle shear can not be realized production domesticization.
The developing direction of cold rolled silicon steel is that this has determined the working portion length of cutter shaft to super wide cut (>=1200mm), (0.23～0.18mm) type development as thin as a wafer; And high accuracy slitting circle shear cutter for same all adopts built-in spiral fluted self-locking clamping device cutter, shear utmost point thin tape steel requirement tool diameter can not be too large simultaneously, this requires cutter shaft diameter except meeting shear strength, rigidity, and the dimensional tolerance of its diameter, error in geometrical form, shaped position error etc. also must meet high requirement: fully ensure the requirement of clamped-in style cutter head reliable grip, flexible motion and hundreds of clamping device interchangeability.This is also the basis that ensures shearing quality.
Two cutter shafts that meet such requirement, are characterized in many Step Shafts, and especially working portion length is long, and working portion diameter is little, and Geometrical Tolerance Principle is high, arrives high surface roughness.Two cutter shafts are like this slender axles worthy of the name.
The key of slender axles manufacture is in manufacture process, how to ensure that part does not produce flexural deformation, and can ensure again to keep its high accuracy state in long-term use procedure according to its applying working condition, and without distortion, without wearing and tearing, all the time as before, difficulty is very large.For the alloy steel rod of this specification, at room temperature, when 1 DEG C of the every variation of environment temperature, its diameter changes and is approximately 1.45 μ m, while therefore generally manufacture, carries out at constant temperature workshop.Can exchange use owing to will ensureing that domestic slitting circle shear reaches with the cutter of steel mill existing import slitting circle shear, so also must be in the data of factory's collection in worksite import disc scissors shaft diameter.In any case be cannot ensure manufactured place and land used environment temperature is not changed, therefore, in solving process for machining and manufacturing, must first solve measuring technique problem.
The emphasis that high accuracy cutter shaft is measured is at the key index such as diameter tolerance and run-out tolerance (radially total run-out and end surface full jumping) of working portion.Adopt traditional amesdial or Mai Erbiao just can meet the demands for run-out tolerance.For diameter tolerance, adopt conventional its precision of the measuring instrument such as slide measure, micrometer not reach requirement; Integrated application the certainty of measurement of three-coordinates measuring machine of the advanced technologies such as optics, electronic technology, computer technology both do not reached requirement, be also not suitable for in-site measurement, that is to say, adopt traditional measurement method and the measuring instrument of machine-building not to reach requirement.
Summary of the invention
For above-mentioned problem, the invention provides and a kind of adopt heat treatment flow process, surfaces nitrided processing, repair center lapping and grinding process and abrasive polishing process three times and combine, realize slitting circle shear and kept in process of production high accuracy state, without distortion, without the process for machining and manufacturing method of wearing and tearing.
To achieve the above object, the present invention realizes by the following technical solutions, and a kind of manufacture method of slitting circle shear cutter shaft, comprises the following steps:
1) select materials, cutter shaft material selection 38CrMoAl alloy structure steel forgings;
2) selected steel forgings is carried out to roughing and heat treatment, carry out roughing according to the drawing of slitting circle shear high accuracy cutter shaft, surplus control 4～5mm after roughing, beat ↑ < of circle 0.8mm, processed materials and parts are heat-treated rough machined simultaneously, after heat treatment, the hardness of workpiece reaches HB241～286, its hardness inhomogeneities≤5HB;
3) repair center lapping, workpiece after roughing and heat treatment is carried out to centre bore and repair and grind, carry out half fine grinding repairing in the process of grinding the cylindrical of the workpiece to repaiied center lapping simultaneously; Half refines the outside diameter of workpiece afterwards reaches>=
circularity < 0.005, circle beat ↑ < 0.005, the roughness of repairing center lapping rear center hole reaches Ra0.2;
4) fine grinding cylinder, the cylindrical of centre bore being repaiied to the workpiece after grinding refines, and in the process of fine grinding, workpiece is carried out to stabilizing aging processing; Outer diameter of a circle after fine grinding cylinder
roughness Ra 0.1, each section of difference in size < 0.002;
5) polishing, carries out polishing to measuring rear standard compliant workpiece, and after polishing, the outside diameter of workpiece reaches
time, in the time of the circularity < 0.001 of cylindrical, the roughness of centre bore reaches Ra0.2, machines.
Step 2) described selected steel forgings is carried out to roughing and heat treatment realizes according to following steps:
I is rough turn, and selected steel forgings is carried out to rough turn processing; The diameter surplus control 7～8mm of rough turn rear excircle of workpiece;
II modifier treatment, carries out modifier treatment to the workpiece after rough turn, makes the hardness of workpiece reach HB241～286, its hardness inhomogeneities≤5HB;
III half is rough turn, makes the surplus control 4～5mm of workpiece, beat ↑ < of circle 0.8mm;
Workpiece after IV is half-and-half rough turn carries out high tempering, and the temperature of high tempering is between 500～650 DEG C;
The workpiece of V after to high tempering carries out finish turning and the cylindrical on workpiece roughly ground, and in the time of corase grind, withstands two ends centre bore and proofreaies and correct cylindrical and beat, and after corase grind, outer diameter of a circle reaches
circularity and cylindricity < 0.01mm, circular runout ↑ < 0.01mm;
VI magnetic powder inspection, carries out magnetic powder inspection to the workpiece after corase grind, checks after heat treatment of workpieces whether have crackle generation;
VII lonneal, carries out lonneal to the workpiece that there is no crackle that passes through magnetic powder inspection repairing before center lapping half fine grinding, and the temperature of lonneal is between 150～250 DEG C.
The center lapping of repairing described in step 3) is repaiied center lapping through three times and is completed, and is specifically undertaken by following steps:
A. repair for the first time center lapping, the workpiece after roughing and heat treatment is repaiied to center lapping for the first time, the roughness in Xiu Yan rear center hole reaches Ra0.8;
B. half fine cylindrical, by the active section peripheral milling of workpiece extremely
roughness reaches Ra0.4.The cylindrical of repairing for the first time the workpiece after center lapping is carried out to half precision grinding process;
C. nitrogen treatment, half-and-half the workpiece after fine grinding carries out nitrogen treatment, nitrogenize hardness >=900HV and nitride layer depth >=0.5mm, nitrided surface=inhomogeneities≤10HV;
D. repair for the second time center lapping, the roughness of repairing the centre bore after grinding reaches Ra0.4;
E. the workpiece of repairing for the second time after center lapping is carried out to rounding and polishing cylindrical; After rounding and polishing cylindrical, the outer diameter of a circle of workpiece reaches
circularity < 0.005, circle beat ↑ < 0.005;
F. the workpiece after rounding and polishing cylindrical is repaiied to center lapping for the third time, the roughness in hole rear center of Xiu Yan rear center hole reaches Ra0.2.
Fine grinding cylinder described in step 4) completes by following steps:
1. the cylindrical of repairing the workpiece after center lapping is being refined; After fine cylindrical, outside diameter reaches
circularity and cylindricity < 0.002, beat ↑ < of cylindrical 0.003, roughness Ra 0.2;
2. the workpiece after fine cylindrical is carried out to oil and boil, the temperature that oil boils is 60～80 DEG C; Time is 24 hours;
3. the cylindrical of the workpiece after oil boils is carried out to meticulous mill; After meticulous mill, outside diameter reaches
circularity and cylindricity < 0.002, beat ↑ < of cylindrical 0.002, roughness Ra 0.2;
4. the cylindrical of the active section to the workpiece through meticulous mill grinds; Cylindrical
roughness Ra 0.1, each section of difference in size < 0.002 of labor cost.
Polishing in step 5) realizes according to the following steps: the workpiece after fine grinding carries out polishing first to foreign round, after polishing, the roughness of the outer round surface of workpiece reaches Ra0.1, after polishing, workpiece is being carried out to vibropolish, when the outside diameter of workpiece after polishing reaches
time, in the time of the circularity < 0.001 of cylindrical, machine.
In slitting circle shear cutter shaft process, also need workpiece to detect measurement.
The detecting instrument that described workpiece carries out adopting in testing process is pneumatic measuring instrument.
Described workpiece carries out adopting comparative measurement method to detect in testing process, described comparative measurement method is that the detection or the every cover amount instrument that use gas electric type electron beam micrometer to carry out diameter error etc. are all joined two standards check and correction posts, by the limiting value of measured workpiece tolerance bound, check and correction post is proofreaied and correct to measurement of comparison.
Described workpiece is detected to measure be mainly in half fine grinding stage and fine grinding stage.
It is that 50 μ m, resolution ratio are the pneumatic measuring instrument of 0.5 μ m that the half described fine grinding stage adopts measurement category; It is that 20 μ m, resolution ratio are the pneumatic measuring instrument of 0.2 μ m that the fine grinding stage adopts measurement category.
The present invention adopts above technical scheme, its advantage is: by the bold innovation to technological process, adopt rational heat treatment flow process (modified-high tempering-lonneal-oil boils), surfaces nitrided processing, repairing center lapping and grinding process (corase grind-half fine grinding-rounding-fine grinding-meticulous mill) and abrasive polishing process for three times combines, realize slitting circle shear and kept in process of production high accuracy state, without distortion, without the process for machining and manufacturing method of wearing and tearing, and in manufacture process by the technological innovation of measuring method and the bold developing of measuring instrument, realize employing pneumatic measuring instrument and measured slitting circle shear high accuracy cutter shaft by comparative measurement method, realize the error measure of diameter absolute error two cutter shafts in 0.002mm, the method and the produced high accuracy cutter shaft of technological process that adopt the present invention to propose, its key index even exceedes import circle shear cutter shaft technical indicator as diameter tolerance and circularity can directly chase after.
Brief description of the drawings
Fig. 1 slitting disc scissors axle construction schematic diagram.
1, cutter shaft cylindrical.
Detailed description of the invention
Further a kind of manufacture method of slitting circle shear cutter shaft is described in detail below in conjunction with drawings and Examples.
Slitting circle shear cutter shaft as shown in Figure 1, now manufactures it according to the present invention.
A manufacture method for slitting circle shear cutter shaft, comprises the following steps:
1) select materials, the large-scale alloy structure steel forgings of cutter shaft material selection; Large-scale alloy structure steel forgings adopts 38CrMoAl steel, and 38CrMoAl steel is 38CrMoAl hot rolled circular steel.
2) selected steel forgings is carried out to roughing and heat treatment, carry out roughing according to the drawing of slitting circle shear high accuracy cutter shaft, surplus control 4～5mm after roughing, beat ↑ < of circle 0.8mm, processed materials and parts are heat-treated rough machined simultaneously, after heat treatment, the hardness of workpiece reaches HB241～286, and its hardness inhomogeneities≤5HB specifically carries out according to following steps:
I is rough turn, and selected steel forgings is carried out to rough turn processing, adopts engine lathe turning cutter shaft cylindrical 1, surplus control 7～8mm;
II modifier treatment, carries out modifier treatment to the workpiece after rough turn, makes the hardness of workpiece reach HB241～286, its hardness inhomogeneities≤5HB;
After quenching, the heat treatment method of high tempering is called modifier treatment; High tempering refers to and between 500-650 DEG C, carries out tempering.The modified performance that can make steel, material is adjusted significantly, and its intensity, plasticity and toughness are all better, have good comprehensive mechanical performance.After modifier treatment, obtain tempered sorbite.Tempered sorbite (temperedsorbite) is that martensite forms in the time of tempering, under optical frames phase microscope, amplify 500～600 times and just can distinguish above, it is the complex tissue of carbide (the comprising cementite) spherolite that distributing in ferrite matrix; It is also martensitic a kind of tempered structure, is the mixture of ferrite and granular carbide; The degree of supersaturation that ferrite is now substantially carbon-free, carbide is also stable type carbide, is a kind of statenchyma under normal temperature.
III half is rough turn, makes the surplus control 4～5mm of workpiece, beat ↑ < of circle 0.8mm;
Workpiece after IV is half-and-half rough turn carries out high tempering, for stablize the metallographic structure of workpiece, and elimination machining stress;
The workpiece of V after to high tempering carries out the active section of finish turning the cylindrical 1(cutter shaft to workpiece) roughly grind, in the time of corase grind, withstand two ends centre bore and proofread and correct cylindrical and beat;
VI magnetic powder inspection, to after corase grind workpiece carry out magnetic powder inspection, whether have crackle to produce after checking material and heat treatment; After corase grind, outer diameter of a circle reaches
circularity and cylindricity < 0.01mm, circular runout ↑ < 0.01mm;
VII lonneal, carries out lonneal, the main stable metal material structure of lonneal to the workpiece that there is no crackle that passes through magnetic powder inspection repairing before center lapping half fine grinding.
Every heat treatment requirements above must correctly lift in shaft furnace, avoids producing distortion because of heat treatment.
3) repair center lapping, workpiece after roughing and heat treatment carried out to centre bore and repair and grind, repairing in the process of grinding the active section of the cylindrical 1(cutter shaft of the workpiece to repaiied center lapping simultaneously) carry out half fine grinding; Half refines the outside diameter of workpiece afterwards reaches>=
circularity < 0.005, circle beat ↑ < 0.005, the roughness of repairing center lapping rear center hole reaches Ra0.2, repaiies center lapping complete in the process of repairing center lapping by three times, and concrete steps are as follows:
A. repair for the first time center lapping, the workpiece after roughing and heat treatment is repaiied to center lapping for the first time, the roughness in Xiu Yan rear center hole reaches Ra0.8;
B. half fine cylindrical, by the active section peripheral milling of workpiece extremely
roughness reaches Ra0.4; To repairing for the first time the active section of cylindrical 1(cutter shaft of the workpiece after center lapping) carry out half precision grinding process;
C. nitrogen treatment, half-and-half the workpiece after fine grinding carries out nitrogen treatment, nitrogenize hardness >=900HV and nitride layer depth >=0.5mm, nitrided surface=inhomogeneities≤10HV; The nitration case that increases case hardness, improves cutter shaft anti-wear performance and rigidity greatly, increases the service life.The nitrogen treatment adopting is to use conventional gas nitriding processing or bath nitriding processing or ionic nitriding to carry out.The mark of nitrogenize adopts following national standard:
GB/T11354-2005 steel-iron components nitrided case depth is measured and microstructure examination;
The gas nitriding of GB/T18177-2008 steel part;
HB/Z79-1995 aeronautic structure steel and stainless steel nitridation process description;
The glow discharge nitriding of JB/T6956-2007 steel and iron parts;
5 nitridings of JB/T8491.5-2008 machine part heat treatment technics condition, nitrocarburizing;
JB/T9172-1999 Nitriding on Gear, nitrogen-carbon cocementing process and quality control;
JB/T9173-1999 gear carbonitriding technology and quality control;
The gas nitriding of QJ2539.3-1993 thermo-chemical treatment steel;
CB3385-1991 steel-iron components nitrided case depth assay method.
D. repair for the second time center lapping, the roughness of repairing the centre bore after grinding reaches Ra0.4;
E. carry out the active section of rounding and polishing cylindrical 1(cutter shaft to repairing for the second time workpiece after center lapping), withstand two ends centre bore and proofread and correct cylindrical and beat.After rounding and polishing cylindrical the outer diameter of a circle of workpiece reach>=
circularity < 0.005, circle beat ↑ < 0.005, the polishing of active section cylindrical, as far as possible few mill.
F. the active section to rounding and polishing cylindrical 1(cutter shaft) after workpiece repair for the third time center lapping, the roughness in Xiu Yan rear center hole reaches Ra0.2.
4) fine grinding cylinder, the workpiece that centre bore is repaiied after grinding refines, and in the process of fine grinding, workpiece is carried out to stabilizing aging processing; In the process of fine grinding, precision grinding process must be arranged in grinding on high-precision cylindrical grinder, according to the selected emery wheels of factor such as the material of part, hardness, roughness, outer diameter of a circle after fine grinding cylinder
roughness Ra 0.1, each section of difference in size < 0.002, has used following process to carry out:
1. to repairing the active section of cylindrical 1(cutter shaft of the workpiece after center lapping) refine; Withstand two ends centre bore and proofread and correct cylindrical and beat, requiring 20 DEG C of constant temperature workshop processing.Outer active section diameter of a circle is milled to
circularity and cylindricity < 0.002, ↑ < 0.003, roughness Ra 0.2;
2. the active section to fine cylindrical 1(cutter shaft) workpiece afterwards carries out oil and boils, and the oil time of boiling is 24 hours, asks again 60～80 degrees Celsius;
3. the active section of the cylindrical 1(cutter shaft to the workpiece after oil boils) carry out meticulous mill; Withstand two ends centre bore, proofread and correct beat ↑ < of cylindrical 0.003, require 20 DEG C of constant temperature workshop processing.Outer active section diameter of a circle is milled to
circularity and cylindricity < 0.002, ↑ < 0.002, roughness Ra 0.2;
4. the cylindrical of the active section to the workpiece through meticulous mill grinds; Cylindrical
roughness Ra 0.1, each section of difference in size < 0.002.
5) polishing, carries out polishing to measuring rear standard compliant workpiece, obtains finished product, first the workpiece after fine grinding is carried out to polishing, after polishing, the roughness on φ D surface reaches Ra0.1, after polishing, workpiece is being carried out to vibropolish,, when active section diameter after polishing reaches
time, use
Pneumatic measuring instrument segmentation testing section diameter is measured, when the circularity of active section (cylindrical 1)
When < 0.001, machine.
In the above-described embodiments, to also needing workpiece to detect measurement in slitting circle shear cutter shaft process, due to particularity and the high accuracy of the core part-cutter shaft of slitting circle shear, detecting instrument is selected pneumatic measuring instrument, in testing process, be mainly double fine grinding stage and fine grinding stage to measure detection, it is that 50 μ m, resolution ratio are the pneumatic measuring instrument of 0.5 μ m that half fine grinding stage adopted measurement category; It is that 20 μ m, resolution ratio are the pneumatic measuring instrument of 0.2 μ m that the fine grinding stage adopts measurement category.
The detection method of slitting circle shear high accuracy cutter shaft adopts " comparative measurement method ", uses gas electric type electron beam micrometer and standard school rod relatively to carry out the detection of diameter error.
In measuring process, every cover amount instrument all needs supporting two standards check and correction post, limiting value as measured workpiece tolerance bound is proofreaied and correct check and correction post, only needs tested cutter shaft and check and correction post to compare measurement when measurement, can draw the diameter dimension of tested cutter shaft.The size that check and correction post detects with horizontal metroscope in temperature is the thermostatic chamber of 20 ± 0.5 DEG C by country-level measurement unit is as actual value.
Comparative measurement method is by measured parameter and certain standard length bar (calibration rod, demarcate through country-level measurement unit) compare, thereby draw the deviate of measured parameter with respect to master bar, because master bar is known, therefore, the whole value of measured parameter equals the simple algebraical sum of deviate and standard value.Like this, as long as standard length bar is fixed, the whole value of measured parameter just can conveniently be measured.
Air-gauge, according to nozzle flapper principle, is the variation that the change in size of instrument is converted to compressed air require or pressure, adopts novel comparison circuit, and light emitting diode combines with three-color LED post is aobvious, thereby measures the error of workpiece size.According to its characteristic, can select pneumatic measuring instrument is the detecting instrument in high accuracy cutter shaft manufacture process.In the prior art of air-gauge, we have developed from aspects such as material selection, heat treatments to check and correction post and gage outfit the amount instrument of measuring large format diameter emphatically.
In the above-described embodiments, for the diameter that do not affect cutter shaft changes because of the variation of ambient temperature, the precision of processing is higher, and described fine cylindrical and meticulous cylindrical grinding are processed at 20 DEG C of constant temperature workshops.
In the above-described embodiment, described fine cylindrical and meticulous cylindrical grinding are processed at 20 DEG C of constant temperature workshops.
In sum, the invention discloses a kind of manufacture method of slitting circle shear cutter shaft, by the bold innovation to technological process, adopt rational heat treatment flow process (modified-high tempering-lonneal-oil boils), surfaces nitrided processing, repairing center lapping and grinding process (corase grind-half fine grinding-rounding-fine grinding-meticulous mill) and abrasive polishing process for three times combines, realize slitting circle shear and kept in process of production high accuracy state, without distortion, without the process for machining and manufacturing method of wearing and tearing, and in manufacture process by the technological innovation of measuring method and the bold developing of measuring instrument, realize employing pneumatic measuring instrument and measured slitting circle shear high accuracy cutter shaft by comparative measurement method, realize the error measure of diameter absolute error two cutter shafts in 0.002mm, the method and the produced high accuracy cutter shaft of technological process that adopt the present invention to propose, its key index even exceedes import circle shear cutter shaft technical indicator as diameter tolerance and circularity can directly chase after.
Claims (10)
1. a manufacture method for slitting circle shear cutter shaft, is characterized in that, comprises the following steps:
1) select materials, cutter shaft material selection 38CrMoAl alloy structure steel forgings;
2) selected steel forgings is carried out to roughing and heat treatment, carry out roughing according to the drawing of slitting circle shear high accuracy cutter shaft, surplus control 4～5mm after roughing, beat ↑ < of circle 0.8mm, processed materials and parts are heat-treated rough machined simultaneously, after heat treatment, the hardness of workpiece reaches HB241～286, its hardness inhomogeneities≤5HB;
3) repair center lapping, workpiece after roughing and heat treatment is carried out to centre bore and repair and grind, carry out half fine grinding repairing in the process of grinding the cylindrical of the workpiece to repaiied center lapping simultaneously; Half refines the outside diameter of workpiece afterwards reaches>=
circularity < 0.005, circle beat ↑ < 0.005, the roughness of repairing center lapping rear center hole reaches Ra0.2;
4) fine grinding cylinder, the cylindrical of centre bore being repaiied to the workpiece after grinding refines, and in the process of fine grinding, workpiece is carried out to stabilizing aging processing; Outer diameter of a circle after fine grinding cylinder
roughness Ra 0.1, each section of difference in size < 0.002;
5) polishing, carries out polishing to measuring rear standard compliant workpiece, and after polishing, the outside diameter of workpiece reaches
time, in the time of the circularity < 0.001 of cylindrical, the roughness of centre bore reaches Ra0.2, machines.
2. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 1, is characterized in that step 2) described selected steel forgings is carried out to roughing and heat treatment realizes according to following steps:
I is rough turn, and selected steel forgings is carried out to rough turn processing; The diameter surplus control 7～8mm of rough turn rear excircle of workpiece; II modifier treatment, carries out modifier treatment to the workpiece after rough turn, makes the hardness of workpiece reach HB241～286,
Its hardness inhomogeneities≤5HB;
III half is rough turn, makes the surplus control 4～5mm of workpiece, beat ↑ < of circle 0.8mm;
Workpiece after IV is half-and-half rough turn carries out high tempering, and the temperature of high tempering is between 500～650 DEG C;
The workpiece of V after to high tempering carries out finish turning and the cylindrical on workpiece roughly ground, and in the time of corase grind, withstands two ends centre bore and proofreaies and correct cylindrical and beat; After corase grind, outer diameter of a circle reaches
circularity and cylindricity < 0.01mm, circular runout ↑ < 0.01mm;
VI magnetic powder inspection, carries out magnetic powder inspection to the workpiece after corase grind, checks after heat treatment of workpieces whether have crackle generation;
VII lonneal, carries out lonneal to the workpiece that there is no crackle that passes through magnetic powder inspection repairing before center lapping half fine grinding, and the temperature of lonneal is between 150～250 DEG C.
3. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 1, is characterized in that: the center lapping of repairing described in step 3) is repaiied center lapping through three times and completed, and is specifically undertaken by following steps:
A. repair for the first time center lapping, the workpiece after roughing and heat treatment is repaiied to center lapping for the first time, the roughness in Xiu Yan rear center hole reaches Ra0.8;
B. half fine cylindrical, by the active section peripheral milling of workpiece extremely
roughness reaches Ra0.4.The cylindrical of repairing for the first time the workpiece after center lapping is carried out to half precision grinding process;
C. nitrogen treatment, half-and-half the workpiece after fine grinding carries out nitrogen treatment, nitrogenize hardness >=900HV and nitride layer depth >=0.5mm, nitrided surface=inhomogeneities≤10HV;
D. repair for the second time center lapping, the roughness of repairing the centre bore after grinding reaches Ra0.4;
E. the workpiece of repairing for the second time after center lapping is carried out to rounding and polishing cylindrical; After rounding and polishing cylindrical the outer diameter of a circle of workpiece reach>=
circularity < 0.005, circle beat ↑ < 0.005;
F. the workpiece after rounding and polishing cylindrical is repaiied to center lapping for the third time, the roughness in hole rear center of Xiu Yan rear center hole reaches Ra0.2.
4. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 1, is characterized in that, the fine grinding cylinder described in step 4) completes by following steps:
1. the cylindrical of repairing the workpiece after center lapping is being refined; After fine cylindrical, outside diameter reaches
circularity and cylindricity < 0.002, beat ↑ < of cylindrical 0.003, roughness Ra 0.2.
2. the workpiece after fine cylindrical is carried out to oil and boil, the temperature that oil boils is 60～80 DEG C; Time is 24 hours;
3. the cylindrical of the workpiece after oil boils is carried out to meticulous mill; After meticulous mill, outside diameter reaches
circularity and cylindricity < 0.002, beat ↑ < of cylindrical 0.002, roughness Ra 0.2.
4. the cylindrical of the active section to the workpiece through meticulous mill grinds; Cylindrical
roughness Ra 0.1, each section of difference in size < 0.002 of labor cost.
5. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 1, it is characterized in that, polishing in step 5) realizes according to the following steps: the workpiece after fine grinding carries out polishing first to foreign round, after polishing, the roughness of the outer round surface of workpiece reaches Ra0.1, after polishing, workpiece is being carried out to vibropolish, when the outside diameter of workpiece after polishing reaches
time, in the time of the circularity < 0.001 of cylindrical, machine.
6. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 1, is characterized in that, in slitting circle shear cutter shaft process, also needs workpiece to detect measurement.
7. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 6, is characterized in that, the detecting instrument that described workpiece carries out adopting in testing process is pneumatic measuring instrument.
8. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 6, it is characterized in that, described workpiece carries out adopting comparative measurement method to detect in testing process, described comparative measurement method is that the detection or the every cover amount instrument that use gas electric type electron beam micrometer to carry out diameter error etc. are all joined two standards check and correction posts, by the limiting value of measured workpiece tolerance bound, check and correction post is proofreaied and correct to measurement of comparison.
9. the manufacture method of a kind of slitting circle shear cutter shaft according to claim 6, is characterized in that, described workpiece is detected to measure be mainly in half fine grinding stage and fine grinding stage.
10. according to the manufacture method of a kind of slitting circle shear cutter shaft described in claim 7 or 9, it is characterized in that, it is that 50 μ m, resolution ratio are the pneumatic measuring instrument of 0.5 μ m that the half described fine grinding stage adopts measurement category; It is that 20 μ m, resolution ratio are the pneumatic measuring instrument of 0.2 μ m that the fine grinding stage adopts measurement category.
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| CN201410153111.6A CN104015018B (en) | 2014-04-16 | 2014-04-16 | A kind of manufacture method of slitting circle shear cutter shaft |
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| CN201410153111.6A CN104015018B (en) | 2014-04-16 | 2014-04-16 | A kind of manufacture method of slitting circle shear cutter shaft |
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| CN104015018A true CN104015018A (en) | 2014-09-03 |
| CN104015018B CN104015018B (en) | 2016-04-20 |
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| CN201410153111.6A Active CN104015018B (en) | 2014-04-16 | 2014-04-16 | A kind of manufacture method of slitting circle shear cutter shaft |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514167A (en) * | 2016-12-22 | 2017-03-22 | 重庆市江津区恩聪机械厂 | Knife rest shaft and machining process thereof |
| CN110076638A (en) * | 2019-06-05 | 2019-08-02 | 北京首钢冷轧薄板有限公司 | A kind of circle shear precision restorative procedure |
| CN112025212A (en) * | 2020-07-30 | 2020-12-04 | 西安欧中材料科技有限公司 | Method for processing nondestructive flaw detection surface of powder high-temperature alloy part |
| CN113969337A (en) * | 2021-09-26 | 2022-01-25 | 江苏裕隆锻造有限公司 | Process for reducing cracks of 50Mn18Cr5 retaining ring forging |
| CN114193094A (en) * | 2021-12-08 | 2022-03-18 | 江苏特贝尔精密机械科技有限公司 | Machining process of ultrahigh precision main shaft |
| CN114260663A (en) * | 2021-12-23 | 2022-04-01 | 重庆机床(集团)有限责任公司 | High-precision worm and machining method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004230477A (en) * | 2003-01-28 | 2004-08-19 | Chikei Sha | Method of manufacturing ratchet for spanner with 90-180 teeth, and rachet with 90-180 teeth |
| CN201380323Y (en) * | 2009-04-03 | 2010-01-13 | 山西太钢不锈钢股份有限公司 | Novel circle shear |
| CN101745685A (en) * | 2009-12-24 | 2010-06-23 | 中国重型机械研究院有限公司 | Method for designing runout of blade end face and parallelism of shear plane of edge-cutting circle shear for belt material |
| CN101862938A (en) * | 2008-01-20 | 2010-10-20 | 中国重型机械研究院 | Manufacturing method and assembling process of trimming rotary shear overlap adjusting device |
| CN102000871A (en) * | 2010-08-26 | 2011-04-06 | 江苏亨特宏业重工有限公司 | Device for adjusting overlapping amount of circle shear in longitudinal shearing device |
| CN102825515A (en) * | 2012-08-23 | 2012-12-19 | 常州宝菱重工机械有限公司 | Machining method of high-accuracy cutter shaft of rotary shear |
| CN203471047U (en) * | 2013-05-17 | 2014-03-12 | 莱芜钢铁集团有限公司 | Novel outer end face positioning type disc shear shaft |
-
2014
- 2014-04-16 CN CN201410153111.6A patent/CN104015018B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004230477A (en) * | 2003-01-28 | 2004-08-19 | Chikei Sha | Method of manufacturing ratchet for spanner with 90-180 teeth, and rachet with 90-180 teeth |
| CN101862938A (en) * | 2008-01-20 | 2010-10-20 | 中国重型机械研究院 | Manufacturing method and assembling process of trimming rotary shear overlap adjusting device |
| CN201380323Y (en) * | 2009-04-03 | 2010-01-13 | 山西太钢不锈钢股份有限公司 | Novel circle shear |
| CN101745685A (en) * | 2009-12-24 | 2010-06-23 | 中国重型机械研究院有限公司 | Method for designing runout of blade end face and parallelism of shear plane of edge-cutting circle shear for belt material |
| CN102000871A (en) * | 2010-08-26 | 2011-04-06 | 江苏亨特宏业重工有限公司 | Device for adjusting overlapping amount of circle shear in longitudinal shearing device |
| CN102825515A (en) * | 2012-08-23 | 2012-12-19 | 常州宝菱重工机械有限公司 | Machining method of high-accuracy cutter shaft of rotary shear |
| CN203471047U (en) * | 2013-05-17 | 2014-03-12 | 莱芜钢铁集团有限公司 | Novel outer end face positioning type disc shear shaft |
Non-Patent Citations (1)
| Title |
|---|
| 王淑娟等: "圆盘剪刀轴加工技术", 《金属加工（冷加工）》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514167A (en) * | 2016-12-22 | 2017-03-22 | 重庆市江津区恩聪机械厂 | Knife rest shaft and machining process thereof |
| CN110076638A (en) * | 2019-06-05 | 2019-08-02 | 北京首钢冷轧薄板有限公司 | A kind of circle shear precision restorative procedure |
| CN112025212A (en) * | 2020-07-30 | 2020-12-04 | 西安欧中材料科技有限公司 | Method for processing nondestructive flaw detection surface of powder high-temperature alloy part |
| CN113969337A (en) * | 2021-09-26 | 2022-01-25 | 江苏裕隆锻造有限公司 | Process for reducing cracks of 50Mn18Cr5 retaining ring forging |
| CN113969337B (en) * | 2021-09-26 | 2023-01-20 | 江苏裕隆锻造有限公司 | Process for reducing cracks of 50Mn18Cr5 retaining ring forging |
| CN114193094A (en) * | 2021-12-08 | 2022-03-18 | 江苏特贝尔精密机械科技有限公司 | Machining process of ultrahigh precision main shaft |
| CN114193094B (en) * | 2021-12-08 | 2023-08-15 | 江苏特贝尔精密机械科技有限公司 | Processing technology of ultra-high precision spindle |
| CN114260663A (en) * | 2021-12-23 | 2022-04-01 | 重庆机床(集团)有限责任公司 | High-precision worm and machining method thereof |
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