CN102689240A - Corn milling cutter and method for machining double-head corrugated corn milling cutter by using corn milling cutter - Google Patents
Corn milling cutter and method for machining double-head corrugated corn milling cutter by using corn milling cutter Download PDFInfo
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- CN102689240A CN102689240A CN2012101710210A CN201210171021A CN102689240A CN 102689240 A CN102689240 A CN 102689240A CN 2012101710210 A CN2012101710210 A CN 2012101710210A CN 201210171021 A CN201210171021 A CN 201210171021A CN 102689240 A CN102689240 A CN 102689240A
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Abstract
The invention discloses a corn milling cutter fixture and a method for machining a double-head corrugated corn milling cutter by using the corn milling cutter fixture, and belongs to the technical field of machining cutters. The corn milling cutter fixture and the method solve problems that when a grinding machine with a common cutter machines a front surface of a corn milling cutter and a relief grinding machine tool grinds a wave blade and a relief angle of the corn milling cutter, equal division precision of cutting edges of cutters is poor due to manual control during grinding of front cutter surface of various teeth, and the service lives of the cutters are affected. A fixture body comprises a first cylinder, a boss, a second cylinder and a third cylinder which are sequentially manufactured integrally, a washer is sleeved on the third cylinder, a nut is connected with the third cylinder in a threaded manner, and a center hole is disposed in the center of an end surface of the third cylinder. The method includes selecting a bar material, discharging the bar material and turning an inner hole, an outer circumferential surfaces and two ends of the bar material; milling circumferential teeth to manufacture a milling cutter toothed blank; performing thermal treatment for the milling cutter toothed blank, and grinding and machining the milling cutter toothed blank to manufacture the corrugated corn milling cutter. The quenching hardness of the thermal treatment ranges from HRC (Rockwell hardness) 63 to HRC66. The corn milling cutter fixture and the method are used for machining the double-head corrugated corn milling cutter.
Description
Technical field
The present invention relates to a kind of maize milling cutter anchor clamps and maize milling cutter processing method, belong to the machining tool technical field.
Background technology
Maize milling cutter is the rough machined cutter commonly used of blade root, and this cutter has helical angle, and the back of tooth is the ripple tooth shape.Blade (the maximum cylindrical of maize milling cutter) runout error requires in 0.03mm, and branch error requirements such as circumferential teeth are within 0.02mm.When the processing maize milling cutter, adopt universal cutter grinding machine process tool rake face, the ripple tooth shape and the relief angle of common machine for making gear teeth grinding maize milling cutter; Owing to adopt manually control during each tooth rake face grinding; Tool in Cutting sword halving precision is poor, does not reach drawing requirement, influences cutter life.
Summary of the invention
The purpose of this invention is to provide a kind of maize milling cutter anchor clamps and utilize this anchor clamps processing double-ended wave edge shape maize milling cutter method; To solve when processing maize milling cutter, adopt universal cutter grinding machine process tool rake face, the ripple tooth shape and the relief angle of common machine for making gear teeth grinding maize milling cutter; Owing to adopt manually control during each tooth rake face grinding; Tool in Cutting sword halving precision is poor, does not reach drawing requirement, influences the problem of cutter life.
The present invention addresses the above problem the technical scheme of taking to be: the maize milling cutter anchor clamps, and said maize milling cutter anchor clamps comprise clamp body, nut and packing ring, said clamp body is a cylinder; Clamp body is made up of first cylinder of processing one, boss, second cylinder and three cylindrical body successively; First cylinder, boss, second cylinder and the coaxial setting of three cylindrical body, the cross section of boss are circular, and the first cylindrical diameter is less than the diameter of three cylindrical body; The diameter of three cylindrical body is less than the second cylindrical diameter; The second cylindrical diameter is processed with external screw thread less than the diameter of boss on the lateral wall of three cylindrical body, gasket sleeve is contained on the three cylindrical body; Nut is threaded with the three cylindrical body; Be processed with two planes on the outer circumference surface of boss, two planes are symmetrical set with respect to the central axis of clamp body, and the center of the end face of three cylindrical body is provided with center hole.
Utilize maize milling cutter anchor clamps processing double-ended wave edge shape maize milling cutter method, said method comprising the steps of:
Step 1: select bar for use, blanking, car endoporus, outer circumference surface and two ends; Endoporus car to nominal size-0.4～-0.5, cylindrical car to nominal size+0.6～+ 0.7, cutting parameter is: rotating speed is 160～180r/min; The amount of feeding is 0.2～0.25mm/r, and cutting depth is 1.5～2mm;
Step 2: the milling circular tooth, process milling cutter tooth base; Cutting parameter is: rotating speed is 190～200r/min, the amount of feeding is 0.1～-0.15mm/r, cutting depth is 6.5～7mm, and helical angle is 35 °, and branch errors such as circumferential teeth are less than 0.1mm;
Step 3: milling cutter tooth base is heat-treated; Heat treated quenching hardness is HRC63～66; Heat treated process is: earlier with the preheating of milling cutter tooth base, preheat temperature is 540～550 ℃, and be 2h preheating time; Then will the milling cutter tooth base after preheating put into moderate oven and heat, heating-up temperature is 840～850 ℃, and be 16min heat time heating time; To put into high temperature furnace through the milling cutter tooth base after the middle temperature heating again and heat, heating-up temperature is 1220～1240 ℃, and be 8min heat time heating time; Again will the milling cutter tooth base after heat put into constant-temperature oven and be incubated, holding temperature is 580～-600 ℃, and temperature retention time is 16min; To put into the tempering furnace tempering through the milling cutter tooth base after the insulation again; Temperature is 540～550 ℃, and tempering time is 2h, takes out nature afterwards and is cooled to room temperature; At last again the milling cutter tooth base after tempered is put into the tempering furnace tempering once more, temperature is 540～550 ℃, and tempering time is 2h, takes out nature afterwards and is cooled to room temperature;
Step 4: the both ends of the surface grinding of inciting somebody to action milling cutter tooth base after heat treatment reaches smooth state;
Step 5: double-ended wave edge shape maize milling cutter is processed in the grinding of milling cutter tooth base; Milling cutter tooth base after the grinding of two ends is sleeved on the clamp body of maize milling cutter anchor clamps; Nut is tightened on the clamp body, and milling cutter tooth base is fixedly clamped through boss and nut, and the first cylinder clamping of said clamp body is on numerically control grinder main shaft knife bar; Tailstock centre withstands in the center hole on the three cylindrical body end face; Clamp body holds out against through tailstock centre, utilizes said numerically control grinder grinding milling cutter tooth base anterior angle, ripple tooth shape sword and relief angle, 8～12 ° of anterior angles; 8 ° of relief angles, being processed into pitch at last is that 3mm, the depth of convolution are the double-ended wave edge shape maize milling cutter of 1.2mm; Grinding parameter is: use the CBN emery wheel of B91, wherein: B91 refers to granularity; CBN refers to cubic boron nitride abrasive wheel, and said grinding wheel diameter is 100mm, and grinding speed is 24～26m/s, and the amount of feeding is 50～60mm/min, and grinding depth is 0.1～0.15mm.
The invention has the beneficial effects as follows: the present invention adopts this maize milling cutter of Digit Control Machine Tool grinding owing to developed special-purpose maize milling cutter anchor clamps, makes the Tool in Cutting sharpening cut the five equilibrium uniformity; Maize milling cutter blade after the processing (the maximum cylindrical of maize milling cutter) runout error requires in 0.03mm, and branch error requirements such as circumferential teeth are within 0.02mm, and surface roughness is increased to Ra0.8; Cooling is fully (because use Digit Control Machine Tool processing during tool grinding; So cooling fluid is arranged, original processing technology is with common machine for relief grinding processing, does not have cooling fluid); The coating processing is carried out on the surface in addition; Make and improved 20～40% cutter life that through the actual cut test, working (machining) efficiency doubles.
Description of drawings
Fig. 1 is that the present invention utilizes the master of maize milling cutter anchor clamps processing double-ended wave edge shape maize milling cutter to look installation diagram, and Fig. 2 is the main TV structure sketch map of clamp body, and Fig. 3 is the left hand view of Fig. 2.
The specific embodiment
The specific embodiment one: combine Fig. 1-Fig. 3 explanation, the maize milling cutter anchor clamps of this embodiment, said maize milling cutter anchor clamps comprise clamp body 1, nut 2 and packing ring 3; Said clamp body 1 is a cylinder; Clamp body 1 is made up of the first cylinder 1-1 that processes one, boss 1-4, the second cylinder 1-2 and three cylindrical body 1-3 successively, the first cylinder 1-1, boss 1-4, the second cylinder 1-2 and the coaxial setting of three cylindrical body 1-3, and the cross section of boss 1-4 is circular; The diameter of the first cylinder 1-1 is less than the diameter of three cylindrical body 1-3; The diameter of three cylindrical body 1-3 is less than the diameter of the second cylinder 1-2, and the diameter of the second cylinder 1-2 is processed with external screw thread 1-5 less than the diameter of boss 1-4 on the lateral wall of three cylindrical body 1-3; Packing ring 2 is sleeved on the three cylindrical body 1-3; Nut 2 is threaded with three cylindrical body 1-3, is processed with two plane 1-6 on the outer circumference surface of boss 1-4, and two plane 1-6 are symmetrical set with respect to the central axis of clamp body 1; Being convenient to the maize milling cutter anchor clamps is installed on the Digit Control Machine Tool; And conveniently the maize milling cutter anchor clamps are disassembled from Digit Control Machine Tool, the center of the end face of three cylindrical body 1-3 is provided with center hole 1-7, is convenient to the maize milling cutter anchor clamps and leans on Digit Control Machine Tool.
The specific embodiment two: combine Fig. 1 and Fig. 2 explanation, the specific embodiment one said maize milling cutter anchor clamps that utilize of this embodiment are processed double-ended wave edge shape maize milling cutter method, said method comprising the steps of:
Step 1: select bar for use, blanking, car endoporus, outer circumference surface and two ends; Endoporus car to nominal size-0.4～-0.5, cylindrical car to nominal size+0.6～+ 0.7, cutting parameter is: rotating speed is 160～180r/min; The amount of feeding is 0.2～0.25mm/r, and cutting depth is 1.5～2mm;
Step 2: the milling circular tooth, process milling cutter tooth base; Cutting parameter is: rotating speed is 190～200r/min, the amount of feeding is 0.1～-0.15mm/r, cutting depth is 6.5～7mm, and helical angle is 35 °, and branch errors such as circumferential teeth are less than 0.1mm;
Step 3: milling cutter tooth base is heat-treated; Heat treated quenching hardness is HRC63～66; Heat treated process is: earlier with the preheating of milling cutter tooth base, preheat temperature is 540～550 ℃, and be 2h preheating time; Then will the milling cutter tooth base after preheating put into moderate oven and heat, heating-up temperature is 840～850 ℃, and be 16min heat time heating time; To put into high temperature furnace through the milling cutter tooth base after the middle temperature heating again and heat, heating-up temperature is 1220～1240 ℃, and be 8min heat time heating time; Again will the milling cutter tooth base after heat put into constant-temperature oven and be incubated, holding temperature is 580～-600 ℃, and temperature retention time is 16min; To put into the tempering furnace tempering through the milling cutter tooth base after the insulation again; Temperature is 540～550 ℃, and tempering time is 2h, takes out nature afterwards and is cooled to room temperature; At last again the milling cutter tooth base after tempered is put into the tempering furnace tempering once more, temperature is 540～550 ℃, and tempering time is 2h, takes out nature afterwards and is cooled to room temperature;
Step 4: the both ends of the surface grinding of inciting somebody to action milling cutter tooth base after heat treatment reaches smooth state;
Step 5: double-ended wave edge shape maize milling cutter is processed in the grinding of milling cutter tooth base; Milling cutter tooth base after the grinding of two ends is sleeved on the clamp body 1 of maize milling cutter anchor clamps; Nut 2 is tightened on the clamp body 1; Milling cutter tooth base is fixedly clamped through boss 1-4 and nut 2, and the first cylinder 1-1 clamping of said clamp body 1 is on numerically control grinder (five-shaft numerical control grinding machine) main shaft knife bar, and tailstock centre withstands in the center hole 1-7 on the three cylindrical body 1-3 end face; Clamp body 1 through tailstock centre hold out against (this one the folder one top mode not only guaranteed rotating accuracy; Positioning accuracy when also having improved grinding greatly), utilize said numerically control grinder grinding milling cutter tooth base anterior angle, ripple tooth shape sword and relief angle, 8～12 ° of anterior angles; 8 ° of relief angles, being processed into pitch at last is that 3mm, the depth of convolution are the double-ended wave edge shape maize milling cutter 4 of 1.2mm; Grinding parameter is: use the CBN emery wheel of B91, wherein: B91 refers to granularity; CBN refers to cubic boron nitride abrasive wheel, and said grinding wheel diameter is 100mm, and grinding speed is 24～26m/s, and the amount of feeding is 50～60mm/min, and grinding depth is 0.1～0.15mm.
The specific embodiment three: combine Fig. 1 explanation, the said method of this embodiment also comprises step 6: carry out the TiN coating on the surface of said double-ended wave edge shape maize milling cutter 4 and handle.Purpose is for increasing case hardness, improve cutter life, having carried out the coating processing.The additive method step is identical with the specific embodiment one.
Claims (3)
1. maize milling cutter anchor clamps; It is characterized in that: said maize milling cutter anchor clamps comprise clamp body (1), nut (2) and packing ring (3); Said clamp body (1) is a cylinder, and clamp body (1) is made up of first cylinder (1-1) of processing one, boss (1-4), second cylinder (1-2) and three cylindrical body (1-3) successively, first cylinder (1-1), boss (1-4), second cylinder (1-2) and the coaxial setting of three cylindrical body (1-3); The cross section of boss (1-4) is circular; The diameter of first cylinder (1-1) is less than the diameter of three cylindrical body (1-3), and the diameter of three cylindrical body (1-3) is less than the diameter of second cylinder (1-2), and the diameter of second cylinder (1-2) is less than the diameter of boss (1-4); Be processed with external screw thread (1-5) on the lateral wall of three cylindrical body (1-3); Packing ring (2) is sleeved on the three cylindrical body (1-3), and nut (2) is threaded with three cylindrical body (1-3), is processed with two planes (1-6) on the outer circumference surface of boss (1-4); Two planes (1-6) are symmetrical set with respect to the central axis of clamp body (1), and the center of the end face of three cylindrical body (1-3) is provided with center hole (1-7).
2. one kind is utilized the said maize milling cutter anchor clamps processing of claim 1 double-ended wave edge shape maize milling cutter method, it is characterized in that: said method comprising the steps of:
Step 1: select bar for use, blanking, car endoporus, outer circumference surface and two ends; Endoporus car to nominal size-0.4～-0.5, cylindrical car to nominal size+0.6～+ 0.7, cutting parameter is: rotating speed is 160～180r/min; The amount of feeding is 0.2～0.25mm/r, and cutting depth is 1.5～2mm;
Step 2: the milling circular tooth, process milling cutter tooth base; Cutting parameter is: rotating speed is 190～200r/min, the amount of feeding is 0.1～-0.15mm/r, cutting depth is 6.5～7mm, and helical angle is 35 °, and branch errors such as circumferential teeth are less than 0.1mm;
Step 3: milling cutter tooth base is heat-treated; Heat treated quenching hardness is HRC63～66; Heat treated process is: earlier with the preheating of milling cutter tooth base, preheat temperature is 540～550 ℃, and be 2h preheating time; Then will the milling cutter tooth base after preheating put into moderate oven and heat, heating-up temperature is 840～850 ℃, and be 16min heat time heating time; To put into high temperature furnace through the milling cutter tooth base after the middle temperature heating again and heat, heating-up temperature is 1220～1240 ℃, and be 8min heat time heating time; Again will the milling cutter tooth base after heat put into constant-temperature oven and be incubated, holding temperature is 580～-600 ℃, and temperature retention time is 16min; To put into the tempering furnace tempering through the milling cutter tooth base after the insulation again; Temperature is 540～550 ℃, and tempering time is 2h, takes out nature afterwards and is cooled to room temperature; At last again the milling cutter tooth base after tempered is put into the tempering furnace tempering once more, temperature is 540～550 ℃, and tempering time is 2h, takes out nature afterwards and is cooled to room temperature;
Step 4: the both ends of the surface grinding of inciting somebody to action milling cutter tooth base after heat treatment reaches smooth state;
Step 5: double-ended wave edge shape maize milling cutter is processed in the grinding of milling cutter tooth base; Milling cutter tooth base after the grinding of two ends is sleeved on the clamp body (1) of maize milling cutter anchor clamps; Nut 2 is tightened on the clamp body (1), and milling cutter tooth base is fixedly clamped through boss (1-4) and nut (2), and first cylinder (1-1) clamping of said clamp body (1) is on numerically control grinder main shaft knife bar; Tailstock centre withstands in the center hole (1-7) on three cylindrical body (1-3) end face; Clamp body (1) holds out against through tailstock centre, utilizes said numerically control grinder grinding milling cutter tooth base anterior angle, ripple tooth shape sword and relief angle, 8～12 ° of anterior angles; 8 ° of relief angles, being processed into pitch at last is that 3mm, the depth of convolution are the double-ended wave edge shape maize milling cutter (4) of 1.2mm; Grinding parameter is: use the CBN emery wheel of B91, wherein: B91 refers to granularity; CBN refers to cubic boron nitride abrasive wheel, and said grinding wheel diameter is 100mm, and grinding speed is 24～26m/s, and the amount of feeding is 50～60mm/min, and grinding depth is 0.1～0.15mm.
3. according to the said processing double-ended wave edge of claim 2 shape maize milling cutter method, it is characterized in that: said method also comprises step 6: carry out the TiN coating on the surface of said double-ended wave edge shape maize milling cutter (4) and handle.
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| CN201210171021.0A CN102689240B (en) | 2012-05-29 | 2012-05-29 | Corn milling cutter and method for machining double-head corrugated corn milling cutter by using corn milling cutter |
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| CN201210171021.0A CN102689240B (en) | 2012-05-29 | 2012-05-29 | Corn milling cutter and method for machining double-head corrugated corn milling cutter by using corn milling cutter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111820A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN103495849A (en) * | 2013-10-10 | 2014-01-08 | 北京航空航天大学 | Face-gear milling cutter manufacturing method |
| CN110026897A (en) * | 2019-05-13 | 2019-07-19 | 成都凯天电子股份有限公司 | It is mounted directly the internal grinding knife bar of grinding wheel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111820A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN103111820B (en) * | 2013-03-20 | 2014-12-24 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN103495849A (en) * | 2013-10-10 | 2014-01-08 | 北京航空航天大学 | Face-gear milling cutter manufacturing method |
| CN103495849B (en) * | 2013-10-10 | 2016-05-18 | 北京航空航天大学 | A kind of face gear milling cutter manufacture method |
| CN110026897A (en) * | 2019-05-13 | 2019-07-19 | 成都凯天电子股份有限公司 | It is mounted directly the internal grinding knife bar of grinding wheel |
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