CN100348454C - Gearing reducer made of magnesium alloy for electric children vehicle, and art for commercialized prodn. of same - Google Patents
Gearing reducer made of magnesium alloy for electric children vehicle, and art for commercialized prodn. of same Download PDFInfo
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- CN100348454C CN100348454C CNB2005100104425A CN200510010442A CN100348454C CN 100348454 C CN100348454 C CN 100348454C CN B2005100104425 A CNB2005100104425 A CN B2005100104425A CN 200510010442 A CN200510010442 A CN 200510010442A CN 100348454 C CN100348454 C CN 100348454C
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Abstract
The present invention provides a gear reduction box made of magnesium alloy for an electric children vehicle and the manufacture process thereof, which relates to a gear reduction box for an electric children vehicle and the manufacture process thereof. The present invention solves the problems of complex manufacture process and easy abrasion of a plastic gear of a traditional gear reduction box for an electric children vehicle. An inner ring gear of a first thin gear 4-1 in a gear box is meshed with an outer ring gear of a first thick gear 5-1, the outer ring gear of the first thick gear 5-1 is meshed with an outer ring gear of a second thin gear 4-2, an inner ring gear of a second thin gear 4-2 is meshed with an outer ring gear of a second thick gear 5-2, the outer ring gear of the second thick gear 5-2 is meshed with an outer ring gear of a third thin gear 4-3, an inner ring gear of the third thin gear 4-3 is meshed with a gear shaft 6, and the thin gears, the thick gears and the gear shaft 6 are made of magnesium alloy material. The manufacture process of the present invention is completed by the following five steps: workblank feeding, thin gear cold stamping, thick gear hot stamping, gear shaft hot extrusion and surface treatment. The gear reduction box has the advantage of simple structure and manufacturing process, and can be produced in batch.
Description
Technical field
The present invention relates to a kind of electric children vehicle gear reduction box and manufacturing process thereof, be specifically related to a kind of magnesium alloy for electric children vehicle gear reduction box and batch manufacturing manufacturing process thereof.
Background technology
China's annual output perambulator has reached 3,500 ten thousand at present, and wherein electric children vehicle is nearly ten million.Gear reduction box is the core component of electric children vehicle, the quality of drop-gear box quality and the length in service life to electric children vehicle use and sale plays decisive action.Gear in traditional electric children vehicle gear reduction box adopts plastic material and makes through Shooting Technique, its manufacturing process complexity, and the die manufacturing cost height, gear is easy to wear, makes the drop-gear box can't normal operation, finally causes electric children vehicle normally to use; And owing to contain harmful chemical element lead in the plastic gear, long-term use not only brings harm to health, also pollutes the environment simultaneously.
Summary of the invention
The objective of the invention is to make owing to the employing plastic material and through Shooting Technique for the gear that solves in traditional electric children vehicle gear reduction box, thereby there is a manufacturing process complexity, the die manufacturing cost height, gear is easy to wear, make the drop-gear box can't normal operation, finally cause electric children vehicle normally to use and since plastics in contain harmful chemical element lead, long-term use not only brings harm to health, also pollutes the environment problem simultaneously and a kind of magnesium alloy for electric children vehicle gear reduction box and the batch manufacturing manufacturing process thereof that provide.Magnesium alloy for electric children vehicle gear reduction box of the present invention comprises housing, motor 1, the final gear of being made up of base 3-1 and outer cover 3-2 2; It also comprises thin gear, thick gear, gear wheel shaft 6, primary shaft 7, second spool 8, third axle 9, first registration device, second registration device, the 3rd registration device; Described thin gear is made up of the first thin gear 4-1, the second thin gear 4-2, the 3rd thin gear 4-3; Described thick gear is made up of the first thick gear 5-1, the second thick gear 5-2; Motor 1 is fixed on the outer panels of base 3-1 of housing, the output shaft 1-1 of motor 1 is contained in the housing, on the output shaft 1-1 of motor 1 final gear 2 is housed, the external toothing engagement of the final gear 2 and the first thin gear 4-1, the first thin gear 4-1 is contained on the primary shaft 7 of captiveing joint with housing, the internally toothed annulus of the first thin gear 4-1 and the engagement of the external toothing of the first thick gear 5-1, the external toothing engagement of the external toothing of the first thick gear 5-1 and the second thin gear 4-2, the second thin gear 4-2 is contained on second 8 that captives joint with housing, the internally toothed annulus of the second thin gear 4-2 and the engagement of the external toothing of the second thick gear 5-2, the external toothing engagement of the external toothing of the second thick gear 5-2 and the 3rd thin gear 4-3, the 3rd thin gear 4-3 dress at one end with third axle 9 that the base 3-1 of housing is captiveed joint on, the internally toothed annulus of the 3rd thin gear 4-3 and gear wheel shaft 6 engagements, first registration device is housed on the primary shaft 7, second registration device is housed on second 8, the 3rd registration device is housed on the third axle 9; Described thin gear, thick gear and gear wheel shaft 6 are made by magnesium alloy materials; Magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process of the present invention is finished by following steps: a, blank blanking: it is the magnesium alloy sheet of 1.5～2mm that thin gear adopts thickness, it is the magnesium alloy sheet of 3～4mm that thick gear adopts thickness, and it is the magnesium alloy bar of 20～50mm that gear wheel shaft 6 adopts diameter of axle Φ; B, thin gear cold stamping: with thickness of slab is that the magnesium alloy sheet of 1.5～2mm is put in the gear diel once cold stamping shaped; C, thick gear drop stamping: the magnesium alloy sheet that with thickness of slab is 3～4mm earlier is heated to 350～450 ℃, the magnesium alloy sheet that will heat is placed on a drop stamping moulding in the gear diel of preheating again, and the preheating temperature of mould is identical with the heating-up temperature of magnesium alloy sheet; D, gear wheel shaft hot extrusion: the magnesium alloy bar that with diameter of axle Φ is 20～50mm earlier is heated to 350～450 ℃, time of heat is no more than 1h, the magnesium alloy bar that will heat again is put into and in the gear wheel shaft hot-extrusion mold of preheating the magnesium alloy bar is carried out hot-pressedly, and mold preheating temperature is identical with the heating-up temperature of magnesium alloy bar; E, surface treatment: adopt the method for pickling or anodizing or plasma spray to carry out surface treatment in type thin gear, thick gear and gear wheel shaft 6.
The present invention has following beneficial effect: one, the present invention replaces the original plastic gear that uses with magnesium metal alloy gear, and its resistance to abrasion is much higher than plastic gear; Simultaneously, magnesium alloy is again the lightest practical metal, proportion only be 1.78 and plastics very approaching, can not influence driving efficiency; In addition, cold or hot stamping method is made the magnesium alloy gear and is compared with plastic injection-moulded method manufacturing plastic gear with sheet material, can reduce the manufacturing cost of mould significantly, also can prolong the service life of perambulator drop-gear box simultaneously.Two, replaced the use of leaded plastic with green metal magnesium, to human body zero damage, environmentally safe, compliance with environmental protection requirements.Three, replace injection mould can carry out the production in enormous quantities of perambulator drop-gear box part with diel, reduced the complexity of mould, save the manufacturing cost of mould, the manufacturing process of drop-gear box is become simply by complexity, satisfied batch production requirement; Replace original injection mould producing process with process for stamping, also can save the consumption of a large amount of heating energy source.Four, thin design of gears becomes to have the transmission gear of internally toothed annulus and external toothing, not only can make drop-gear box simple in structure, compact, also can guarantee drop-gear box stable drive, reliable simultaneously.
Description of drawings
Fig. 1 is the integral structure section-drawing of magnesium alloy for electric children vehicle gear reduction box of the present invention, and Fig. 2 is the integral structure section-drawing of gear diel, and Fig. 3 is the integral structure section-drawing of gear wheel shaft hot-extrusion mold.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1 present embodiment is described, the housing that the magnesium alloy for electric children vehicle gear reduction box of present embodiment is made up of base 3-1 and outer cover 3-2, motor 1, final gear 2, thin gear, thick gear, gear wheel shaft 6, primary shaft 7, second spool 8, third axle 9, first registration device, second registration device, the 3rd registration device form; Described thin gear is made up of the first thin gear 4-1, the second thin gear 4-2, the 3rd thin gear 4-3; Described thick gear is made up of the first thick gear 5-1, the second thick gear 5-2; Motor 1 is fixed on the outer panels of base 3-1 of housing, the output shaft 1-1 of motor 1 is contained in the housing, on the output shaft 1-1 of motor 1 final gear 2 is housed, the external toothing engagement of the final gear 2 and the first thin gear 4-1, the first thin gear 4-1 is contained on the primary shaft 7 of captiveing joint with housing, the internally toothed annulus of the first thin gear 4-1 and the engagement of the external toothing of the first thick gear 5-1, the external toothing engagement of the external toothing of the first thick gear 5-1 and the second thin gear 4-2, the second thin gear 4-2 is contained on second 8 that captives joint with housing, the internally toothed annulus of the second thin gear 4-2 and the engagement of the external toothing of the second thick gear 5-2, the external toothing engagement of the external toothing of the second thick gear 5-2 and the 3rd thin gear 4-3, the 3rd thin gear 4-3 dress at one end with third axle 9 that the base 3-1 of housing is captiveed joint on, the internally toothed annulus of the 3rd thin gear 4-3 and gear wheel shaft 6 engagements, first registration device is housed on the primary shaft 7, second registration device is housed on second 8, the 3rd registration device is housed on the third axle 9; Described thin gear, thick gear 5-1 and gear wheel shaft 6 are made by magnesium alloy materials.
In the present embodiment, motor 1 adopts DC machine, final gear 2 adopts the type product (being made by metallic copper material) in the existing perambulator drop-gear box, between the first thin gear 4-1 and the first thick gear 5-1, between the second thin gear 4-2 and the second thick gear 5-2 and the 3rd approach that the employing running-fit fits together between gear 4-3 and the gear wheel shaft 6, do not need any fitter's tools.The modulus of the modulus of the internally toothed annulus of the first thin gear 4-1, the second thin gear 4-2 and the 3rd thin gear 4-3 and the external toothing of the first thick gear 5-1, the second thick gear 5-2 and gear wheel shaft 6 is correspondent equal successively.Adopt the good metal tube of sawing to be used the rapid axial location that to realize gear as locating bush and locating pad (employing standardized washer).The base 3-1 of housing and outer cover 3-2 and primary shaft 7, second spool 8, third axle 9 can adopt the product of the same model on the existing electric children vehicle, also can adopt the drop stamping mode to make the outer cover 3-2 of magnesium alloy shell, magnesium alloy plate adopts the mode of boring to make the base 3-1 of magnesium alloy shell, adopt metal sawing mode to make primary shaft 7, second spool 8 and third axle 9, can produce full magnesium alloy perambulator drop-gear box like this.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, first registration device of present embodiment is made up of the first locating bush 10-1, the first locating pad 10-2, the second locating pad 10-3; On the primary shaft 7 between the outer cover 3-2 of housing and the first thick gear 5-1 the first locating bush 10-1 is housed, on the primary shaft 7 between the base 3-1 of housing and the first thick gear 5-1 the first locating pad 10-2 is housed, on the first thick gear 5-1 between the first thin gear 4-1 and the second thin gear 4-2 the second locating pad 10-3 is housed.Adopt the good metal tube of sawing to be used the rapid axial location that to realize the first thick gear 5-1 as the first locating bush 10-1 and with the first locating pad 10-2, the second locating pad 10-3 (employing standardized washer).Other composition and annexation are identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, second registration device of present embodiment is made up of the second locating bush 11-1, the 3rd locating pad 11-2, the 4th locating pad 11-3; On second 8 between the outer cover 3-2 of housing and the second thick gear 5-2 the second locating bush 11-1 is housed, on second 8 between the base 3-1 of housing and the second thick gear 5-2 the 3rd locating pad 11-2 is housed, on the second thick gear 5-2 between the second thin gear 4-2 and the 3rd thin gear 4-3 the 4th locating pad 11-3 is housed.Adopt the good metal tube of sawing to be used the rapid axial location that to realize the second thick gear 5-2 as the second locating bush 11-1 and with the 3rd locating pad 11-2, the 4th locating pad 11-3 (employing standardized washer).Other composition and annexation are identical with the specific embodiment one.
The specific embodiment four: in conjunction with Fig. 1 present embodiment is described, the 3rd registration device of present embodiment is made up of the 3rd locating bush 12-1; On the base 3-1 of housing and the third axle 9 between the gear wheel shaft 6 the 3rd locating bush 12-1 is housed.Adopt the good metal tube of sawing can realize the rapid axial location of gear wheel shaft 6 as the 3rd locating bush 12-1.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment five, the magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process of present embodiment is finished by following steps: a, blank blanking: it is AZ31 magnesium alloy rolling band or the sheet material of 1.5～2mm that thin gear adopts thickness, it is AZ31 magnesium alloy rolling band or the sheet material of 3～4mm that thick gear adopts thickness, and it is magnesium alloy rolling or the extruded bar stock of 20～50mm that gear wheel shaft 6 adopts diameter of axle Φ; B, thin gear cold stamping: with thickness of slab is that the magnesium alloy sheet of 1.5～2mm is put in the gear diel once cold stamping shaped; C, thick gear drop stamping: the magnesium alloy sheet that with thickness of slab is 3～4mm earlier is heated to 350～450 ℃, the magnesium alloy sheet that will heat is placed on a drop stamping moulding in the gear diel of preheating again, and the preheating temperature of mould is identical with the heating-up temperature of magnesium alloy sheet; D, gear wheel shaft hot extrusion: the magnesium alloy bar that with diameter of axle Φ is 20～50mm earlier is heated to 350～450 ℃, time of heat is no more than 1h, the magnesium alloy bar that will heat again is put into and in the gear wheel shaft hot-extrusion mold of preheating the magnesium alloy bar is carried out hot-pressedly, and mold preheating temperature is identical with the heating-up temperature of magnesium alloy bar; E, surface treatment: adopt the method for pickling or anodizing or plasma spray to carry out surface treatment in type thin gear, thick gear and gear wheel shaft 6.
In the present embodiment, carry out f tubing sawing step after the e surface treatment step: locating bush adopts metal tube such as aluminum pipe, copper pipe or magnesium pipe, and a/s length dimension carries out sawing and processes.
The assembling of drop-gear box: the base 3-1 with housing is fixed on the bench board earlier, and the first locating pad 10-2 is contained on the primary shaft 7, and the 3rd locating pad 11-2 is contained on second 8, and the 3rd locating bush 12-1 is contained on the third axle 9; Again the first thick gear 5-1 is contained on the primary shaft 7 of packing into jointly then in the first thin gear 4-1, the second thick gear 5-2 is contained in packs into jointly then in the second thin gear 4-2 on second 8; The second locating pad 10-3 is enclosed within on the first thick gear 5-1, the 4th locating pad 11-3 is enclosed within on the second thick gear 5-2; The first thin gear 4-1 is contained on the primary shaft 7 and with the first thick gear 5-1 engagement, the 3rd thin gear 4-3 is contained on the third axle 9 and with the second thick gear 5-2 engagement; Then gear wheel shaft 6 is contained on the third axle 9 and and meshes, the first locating bush 10-1 is contained on the primary shaft 7, the second locating bush 11-1 is contained on second 8 with the 3rd internally toothed annulus that approaches gear 4-3; Close at last housing outer cover 3-2 and fix with screw is fixed on motor 1 on the outer side panel of housing base 3-1.
The specific embodiment six: the difference of the present embodiment and the specific embodiment five is: in a step of present embodiment, it is the magnesium alloy sheet of 1.8mm that thin gear adopts thickness, it is the magnesium alloy sheet of 3.5mm that thick gear adopts thickness, and it is the magnesium alloy bar of 3.5mm that gear wheel shaft adopts diameter of axle Φ; In the b step, be that the magnesium alloy sheet of 1.8mm is put in the gear diel once cold stamping shaped with thickness of slab; In the c step, be that the magnesium alloy sheet of 3.5mm is heated to 400 ℃ with thickness; In the d step, be that the magnesium alloy bar of 3.5mm is heated to 400 ℃ with diameter of axle Φ, time of heat is 45min.Made thin gear, thick gear and gear wheel shaft 6 have wear resisting property preferably.
The specific embodiment seven: the difference of the present embodiment and the specific embodiment five is: in the e step of present embodiment, in type thin gear, thick gear and gear wheel shaft 6 are carried out artificial aging to be handled, aging temp is 160～200 ℃, and temperature retention time is 12～18h.Adopt this processing method, can guarantee that the surface of in type thin gear, thick gear and gear wheel shaft 6 has wear resisting property preferably.
The specific embodiment eight: the difference of the present embodiment and the specific embodiment seven is: in the e step of present embodiment, the temperature that artificial aging is handled is 180 ℃, and temperature retention time is 15h.Adopt this processing method, can guarantee that the surface of in type thin gear, thick gear and gear wheel shaft 6 has the good wear resistance energy.
The specific embodiment nine: in conjunction with Fig. 2 present embodiment is described, the gear diel of being adopted in the b step of present embodiment and the c step is made up of mould bases, upper die and lower die, temperature controller 16, die shank 17; Patrix is coaxial with counterdie, and patrix is made up of last liftout spring 14-1, upper mould fixed plate 14-2, upper die plate 14-3, transmission push rod 14-4, die 14-5, last ejector beam 14-6, pressing plate 14-7, locating dowel pin 14-8, punch 14-9, last heating collar 14-10; The lower end of die shank 17 is contained in the axis hole of the cope match-plate pattern 13-1 in the mould bases, upper mould fixed plate 14-2 is equipped with in the lower surface of cope match-plate pattern 13-1, upper die plate 14-3 is equipped with in the lower surface of upper mould fixed plate 14-2, die 14-5 is equipped with in the lower surface of upper die plate 14-3, cope match-plate pattern 13-1 and upper mould fixed plate 14-2, captive joint is also by locating dowel pin 14-8 location between upper die plate 14-3 and the die 14-5, pressing plate 14-7 and last liftout spring 14-1 are housed in the groove 14-2-1 of upper mould fixed plate 14-2, in the axial shoulder hole 14-5-1 of die 14-5 ejector beam 14-6 is housed, in last ejector beam 14-6 and the corresponding axial center hole of upper die plate 14-3 punch 14-9 is housed, on the inwall of the axial shoulder hole 14-5-1 of die 14-5 heating collar 14-10 is housed, lead 35 is housed in the radial direction through hole of die 14-5, lead 35 is connected with temperature controller 16, in upper die plate 14-3 and the corresponding axis hole of upper mould fixed plate 14-2 transmission push rod 14-4 is housed; Described counterdie by gear ring pressing plate 15-1, counterdie adapter plate 15-2, down heating collar 15-3, punch-die 15-4, lower push rod 15-5, drainage conduit 15-6, compress regulating mechanism 15-7 and form; Gear ring pressing plate 15-1 be positioned at die 14-5 under, the lower end of gear ring pressing plate 15-1 is contained in the axial shoulder through hole 15-2-1 of counterdie adapter plate 15-2, captive joint with lower bolster 13-2 in the lower end of counterdie adapter plate 15-2, in the axial shoulder through hole 15-2-1 of counterdie adapter plate 15-2 the punch-die 15-4 of captiveing joint with lower bolster 13-2 is housed, the upper end of punch-die 15-4 is contained in the axis hole of gear ring pressing plate 15-1, on the sidewall of the inward recess 15-1-1 of gear ring pressing plate 15-1 heating collar 15-3 is housed down, in punch-die 15-4 and the corresponding axial hole of lower bolster 13-2 lower push rod 15-5 is housed, the upper end of drainage conduit 15-6 is contained in the axial center hole of lower bolster 13-2 and is coaxial with the axial center hole of punch-die 15-4, the lower end of drainage conduit 15-6 is contained in and compresses on the regulating mechanism 15-7, compresses regulating mechanism 15-7 and captives joint with lower bolster 13-2.
In the present embodiment, captive joint by long spiro nail 18 between cope match-plate pattern 13-1 and upper mould fixed plate 14-2, upper die plate 14-3 and the die 14-5, for processing thickness is that the thin gear of 1.5～2mm need not heating, directly band shape or strip magnesium alloy sheet are placed on the punch-die 15-4 of gear diel and the platform that gear ring pressing plate 15-1 forms and start compression machine, punch 14-9 moves downward the punching operation of finishing thin gear internally toothed annulus with punch-die 15-4 jointly; The die 14-5 that moves downward simultaneously also finishes the blanking operation of the external toothing of thin gear jointly with punch-die 15-4.In the stamping-out process, gear ring pressing plate 15-1 has applied radial compression power to the plate blank, and the thin gear section that stamping-out is gone out does not have tear-strap, and the gear of going out need not be repaired and can directly use.For thickness is that magnesium alloy sheet more than 3～4mm need heat could punching press, and the gear diel needs preheating.The temperature of gear diel can guarantee the good plasticity of magnesium alloy by temperature controller 16 controls, and the model of temperature controller 16 is XMT, is produced by the Changjiang river, Yuyao thermometer Watch Factory.Adopt gear ring pressing plate 15-1 can realize the fine blanking of magnesium alloy gear.
The specific embodiment ten: in conjunction with Fig. 2 present embodiment is described, the mould bases of present embodiment is made up of cope match-plate pattern 13-1, lower bolster 13-2, guide pillar 13-3, guide pin bushing 13-4; Captive joint with the lower end of guide pillar 13-3 in the upper surface of lower bolster 13-2, the upper end of guide pillar 13-3 is contained in the guide pin bushing 13-4, captives joint with the lower surface of cope match-plate pattern 13-1 in the upper end of guide pin bushing 13-4.The mould bases up-and-down movement that adopts this structure freely.Other composition and annexation are identical with the specific embodiment nine.
The specific embodiment 11: in conjunction with Fig. 3 present embodiment is described, the gear wheel shaft hot-extrusion mold that is adopted in the d step of present embodiment by mold frame, go up heat insulation backing plate 19, punch retainer 20, go up punch 21, resistor wire 22, cushion block pressing plate 23, cushion block 24, lower cavity die 25, positioning core axle 26, die backing plate 27, go up locating dowel pin 28, down locating dowel pin 29, heat insulation backing plate 30, temperature controller 31 are formed down; The upper end of last punch 21 is contained in the conical bore 20-1 of punch retainer 20, between the upper end of punch retainer 20 and the patrix panel seat 18-1 in the mold frame heat insulation backing plate 19 is housed fixedly, locate by last locating dowel pin 28 between punch retainer 20 and last heat insulation backing plate 19 and the patrix panel seat 18-1, lower cavity die 25 be positioned at punch 21 under, the lower end of lower cavity die 25 is contained in the annular groove 27-1 of die backing plate 27, heat insulation backing plate 30 is housed down between the annular groove 27-1 of the lower end of lower cavity die 25 and die backing plate 27, positioning core axle 26 is housed in the axial center hole of lower cavity die 25, cushion block 24 is equipped with in the upper surface of die backing plate 27, cushion block pressing plate 23 is housed on the upper surface of the upper surface of cushion block 24 and lower cavity die 25, cushion block pressing plate 23 and cushion block 24, captive joint is also used locating dowel pin 29 location down between die backing plate 27 and the counterdie panel seat 18-2, on the excircle end face of last punch 21 and on the excircle end face of lower cavity die 25 resistor wire 22 that is connected with temperature controller 31 is housed respectively.
In the present embodiment, the magnesium alloy round bar blank workpiece 32 that takes out from heating furnace is placed in the die cavity of lower cavity die 25 of resistor wire 22, and lower cavity die 25 need be preheating to the temperature identical with blank workpiece 32.Last punch 21 is fixed on the patrix panel seat 18-1 by punch retainer 20 usefulness tightening screws 33, patrix panel seat 18-1 is installed on the slide block of hydraulic compressor by the screw pressing plate, lower cavity die 25 is fixed on the die backing plate 27 by screw 34 and cushion block 24 by cushion block pressing plate 23, go up heat insulation backing plate 19 and play the effect that makes punch 21 insulations, heat insulation backing plate 30 plays the effect that makes lower cavity die 25 insulations down, and then improves the plasticity of magnesium alloy blank workpiece 32.The heating of the heating of last punch 21 and lower cavity die 25 realizes by resistor wire 22, the preheating of last punch 21 and holding temperature are 220～350 ℃, adopt temperature controller 31 to record the temperature of punch 21 and lower cavity die 25 and control its temperature by resistor wire 22 by temp probe, the model of temperature controller 31 is XMT, is produced by the Changjiang river, Yuyao thermometer Watch Factory.Finish by positioning core axle 26 location of blank workpiece 32 with holes.After blank workpiece 32 extruding is finished, the outage cooling, treat that blank workpiece 32 cools off fully after, with manual type blank workpiece 32 is taken out from lower cavity die 25.
The specific embodiment 12: in conjunction with Fig. 3 present embodiment is described, the mold frame of present embodiment is made up of patrix panel seat 18-1, counterdie panel seat 18-2, guidepost 18-3, orienting sleeve 18-4; Captive joint with the lower end of guidepost 18-3 in the upper surface of counterdie panel seat 18-2, the upper end of guidepost 18-3 is contained in the orienting sleeve 18-4, captives joint with the lower surface of patrix panel seat 18-1 in the upper end of orienting sleeve 18-4.The mold frame up-and-down movement that adopts this structure freely.Other composition and annexation are identical with the specific embodiment 11.
Claims (10)
1, a kind of magnesium alloy for electric children vehicle gear reduction box, it comprises housing, motor (1), the final gear of being made up of base (3-1) and outer cover (3-2) (2); It is characterized in that it also comprises thin gear, thick gear, gear wheel shaft (6), primary shaft (7), second (8), third axle (9), first registration device, second registration device, the 3rd registration device; Described thin gear is made up of the first thin gear (4-1), the second thin gear (4-2), the 3rd thin gear (4-3); Described thick gear is made up of the first thick gear (5-1), the second thick gear (5-2); Motor (1) is fixed on the outer panels of base (3-1) of housing, the output shaft (1-1) of motor (1) is contained in the housing, on the output shaft (1-1) of motor (1) final gear (2) is housed, final gear (2) meshes with the external toothing of the first thin gear (4-1), the first thin gear (4-1) is contained on the primary shaft (7) of captiveing joint with housing, the internally toothed annulus of the first thin gear (4-1) and the engagement of the external toothing of the first thick gear (5-1), the external toothing engagement of the external toothing of the first thick gear (5-1) and the second thin gear (4-2), the second thin gear (4-2) is contained on second (8) of captiveing joint with housing, the internally toothed annulus of the second thin gear (4-2) and the engagement of the external toothing of the second thick gear (5-2), the external toothing engagement of the external toothing of the second thick gear (5-2) and the 3rd thin gear (4-3), the 3rd thin gear (4-3) dress at one end with third axle (9) that the base (3-1) of housing is captiveed joint on, the internally toothed annulus of the 3rd thin gear (4-3) and gear wheel shaft (6) engagement, primary shaft is equipped with first registration device on (7), on second (8) second registration device is housed, third axle is equipped with the 3rd registration device on (9); Described thin gear, thick gear and gear wheel shaft (6) are made by magnesium alloy materials.
2, magnesium alloy for electric children vehicle gear reduction box according to claim 1 is characterized in that described first registration device is made up of first locating bush (10-1), first locating pad (10-2), second locating pad (10-3); On the primary shaft (7) between the outer cover of housing (3-2) and the first thick gear (5-1) first locating bush (10-1) is housed, on the primary shaft (7) between the base of housing (3-1) and the first thick gear (5-1) first locating pad (10-2) is housed, on the first thick gear (5-1) between the first thin gear (4-1) and the second thin gear (4-2) second locating pad (10-3) is housed.
3, magnesium alloy for electric children vehicle gear reduction box according to claim 1 is characterized in that described second registration device is made up of second locating bush (11-1), the 3rd locating pad (11-2), the 4th locating pad (11-3); On second (8) between the outer cover of housing (3-2) and the second thick gear (5-2) second locating bush (11-1) is housed, on second (8) between the base of housing (3-1) and the second thick gear (5-2) the 3rd locating pad (11-2) is housed, on the second thick gear (5-2) between the second thin gear (4-2) and the 3rd thin gear (4-3) the 4th locating pad (11-3) is housed.
4, magnesium alloy for electric children vehicle gear reduction box according to claim 1 is characterized in that described the 3rd registration device is made up of the 3rd locating bush (12-1); On the third axle (9) between base of housing (3-1) and the gear wheel shaft (6) the 3rd locating bush (12-1) is housed.
5, a kind of magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process, it is characterized in that it is finished by following steps: a, blank blanking: it is the magnesium alloy sheet of 1.5～2mm that thin gear adopts thickness, it is the magnesium alloy sheet of 3～4mm that thick gear adopts thickness, and it is the magnesium alloy bar of 20～50mm that gear wheel shaft (6) adopts the diameter of axle (Φ); B, thin gear cold stamping: with thickness of slab is that the magnesium alloy sheet of 1.5～2mm is put in the gear diel once cold stamping shaped; C, thick gear drop stamping: the magnesium alloy sheet that with thickness of slab is 3～4mm earlier is heated to 350～450 ℃, the magnesium alloy sheet that will heat is placed on a drop stamping moulding in the gear diel of preheating again, and the preheating temperature of mould is identical with the heating-up temperature of magnesium alloy sheet; D, gear wheel shaft hot extrusion: the magnesium alloy bar that with the diameter of axle (Φ) is 20～50mm earlier is heated to 350～450 ℃, time of heat is no more than 1h, the magnesium alloy bar that will heat again is put into and in the gear wheel shaft hot-extrusion mold of preheating the magnesium alloy bar is carried out hot-pressedly, and mold preheating temperature is identical with the heating-up temperature of magnesium alloy bar; E, surface treatment: adopt the method for pickling or anodizing or plasma spray to carry out surface treatment in type thin gear, thick gear and gear wheel shaft (6).
6, magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process according to claim 5, it is characterized in that in the e step, in type thin gear, thick gear and gear wheel shaft (6) are carried out artificial aging handle, aging temp is 160～200 ℃, and temperature retention time is 12～18h.
7, magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process according to claim 5 is characterized in that the gear diel of being adopted in b step and the c step is made up of mould bases, upper die and lower die, temperature controller (16), die shank (17); Patrix is coaxial with counterdie, and patrix is made up of last liftout spring (14-1), upper mould fixed plate (14-2), upper die plate (14-3), transmission push rod (14-4), die (14-5), last ejector beam (14-6), pressing plate (14-7), locating dowel pin (14-8), punch (14-9), last heating collar (14-10); The lower end of die shank (17) is contained in the axis hole of the cope match-plate pattern (13-1) in the mould bases, upper mould fixed plate (14-2) is equipped with in the lower surface of cope match-plate pattern (13-1), upper die plate (14-3) is equipped with in the lower surface of upper mould fixed plate (14-2), die (14-5) is equipped with in the lower surface of upper die plate (14-3), cope match-plate pattern (13-1) and upper mould fixed plate (14-2), captive joint is also by locating dowel pin (14-8) location between upper die plate (14-3) and die (14), pressing plate (14-7) and last liftout spring (14-1) are housed in the groove (14-2-1) of upper mould fixed plate (14-2), in the axial shoulder hole (14-5-1) of die (14-5) ejector beam (14-6) is housed, in last ejector beam (14-6) and the corresponding axial center hole of upper die plate (14-3) punch (14-9) is housed, on the inwall in the axial shoulder hole (14-5-1) of die (14-5) heating collar (14-10) is housed, lead (35) is housed in the radial direction through hole of die (14-5), lead (35) is connected with temperature controller (16), in upper die plate (14-3) and the corresponding axis hole of upper mould fixed plate (14-2) transmission push rod (14-4) is housed; Described counterdie by gear ring pressing plate (15-1), counterdie adapter plate (15-2), down heating collar (15-3), punch-die (15-4), lower push rod (15-5), drainage conduit (15-6), compress regulating mechanism (15-7) and form; Gear ring pressing plate (15-1) be positioned at die (14-5) under, the lower end of gear ring pressing plate (15-1) is contained in the axial shoulder through hole (15-2-1) of counterdie adapter plate (15-2), captive joint with lower bolster (13-2) in the lower end of counterdie adapter plate (15-2), the punch-die (15-4) of captiveing joint with lower bolster (13-2) is housed in the axial shoulder through hole (15-2-1) of counterdie adapter plate (15-2), the upper end of punch-die (15-4) is contained in the axis hole of gear ring pressing plate (15-1), on the sidewall of the inward recess (15-1-1) of gear ring pressing plate (15-1) heating collar (15-3) is housed down, in punch-die (15-4) and the corresponding axial hole of lower bolster (13-2) lower push rod (15-5) is housed, the upper end of drainage conduit (15-6) is contained in the axial center hole of lower bolster (13-2) and is coaxial with the axial center hole of punch-die (15-4), the lower end of drainage conduit (15-6) is contained in and compresses on the regulating mechanism (15-7), compresses regulating mechanism (15-7) and captives joint with lower bolster (13-2).
8, magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process according to claim 7 is characterized in that mould bases is made up of cope match-plate pattern (13-1), lower bolster (13-2), guide pillar (13-3), guide pin bushing (13-4); Captive joint with the lower end of guide pillar (13-3) in the upper surface of lower bolster (13-2), the upper end of guide pillar (13-3) is contained in the guide pin bushing (13-4), captives joint with the lower surface of cope match-plate pattern (13-1) in the upper end of guide pin bushing (13-4).
9, magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process according to claim 5, the gear wheel shaft hot-extrusion mold that it is characterized in that in the d step being adopted by mold frame, go up heat insulation backing plate (19), punch retainer (20), go up punch (21), resistor wire (22), cushion block pressing plate (23), cushion block (24), lower cavity die (25), positioning core axle (26), die backing plate (27), go up locating dowel pin (28), down locating dowel pin (29), heat insulation backing plate (30), temperature controller (31) are formed down; The upper end of last punch (21) is contained in the conical bore (20-1) of punch retainer (20), between the upper end of punch retainer (20) and the patrix panel seat (18-1) in the mold frame heat insulation backing plate (19) is housed fixedly, locate by last locating dowel pin (28) between punch retainer (20) and heat insulation backing plate (19) and the patrix panel seat (18-1), lower cavity die (25) be positioned at punch (21) under, the lower end of lower cavity die (25) is contained in the annular groove (27-1) of die backing plate (27), between the annular groove (27-1) of the lower end of lower cavity die (25) and die backing plate (27) heat insulation backing plate (30) is housed down, positioning core axle (26) is housed in the axial center hole of lower cavity die (25), cushion block (24) is equipped with in the upper surface of die backing plate (27), cushion block pressing plate (23) is housed on the upper surface of the upper surface of cushion block (24) and lower cavity die (25), cushion block pressing plate (23) and cushion block (24), captive joint is also used locating dowel pin (29) location down between die backing plate (27) and the counterdie panel seat (18-2), on the excircle end face of last punch (21) and on the excircle end face of lower cavity die (25) resistor wire (22) that is connected with temperature controller (31) is housed respectively.
10, magnesium alloy for electric children vehicle gear reduction box batch manufacturing manufacturing process according to claim 9 is characterized in that mold frame is made up of patrix panel seat (18-1), counterdie panel seat (18-2), guidepost (18-3), orienting sleeve (18-4); Captive joint with the lower end of guidepost (18-3) in the upper surface of counterdie panel seat (18-2), the upper end of guidepost (18-3) is contained in the orienting sleeve (18-4), captives joint with the lower surface of patrix panel seat (18-1) in the upper end of orienting sleeve (18-4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100104425A CN100348454C (en) | 2005-10-19 | 2005-10-19 | Gearing reducer made of magnesium alloy for electric children vehicle, and art for commercialized prodn. of same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100104425A CN100348454C (en) | 2005-10-19 | 2005-10-19 | Gearing reducer made of magnesium alloy for electric children vehicle, and art for commercialized prodn. of same |
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| CN1757563A CN1757563A (en) | 2006-04-12 |
| CN100348454C true CN100348454C (en) | 2007-11-14 |
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| CN101856722B (en) * | 2010-06-22 | 2011-08-03 | 黑龙江省机械科学研究院 | Method for manufacturing nano-crystal magnesium alloy powder gear |
| CN109047610A (en) * | 2018-07-24 | 2018-12-21 | 哈尔滨工业大学 | A kind of Ti alloy miniature gear pulse current auxiliary microsecond delay floating die assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089228A (en) * | 1975-06-09 | 1978-05-16 | Easom Engineering & Manufacturing Corporation | Motion generating mechanism |
| US6102148A (en) * | 1998-10-21 | 2000-08-15 | Chien; Hsi-Hai | Electrically powered bicycle driving mechanism |
| CN2475656Y (en) * | 2001-04-10 | 2002-02-06 | 财团法人自行车工业研究发展中心 | Speed reducer for portable electric vehicle |
| CN2564797Y (en) * | 2002-07-23 | 2003-08-06 | 葛树祥 | Reduction box for curtain rolling machine |
| CN2685225Y (en) * | 2004-01-20 | 2005-03-16 | 广州市海星马电动车有限公司 | Electric Bicycle variable speed drive box |
| CN2696894Y (en) * | 2004-04-10 | 2005-05-04 | 陈志谦 | Speed reducer box for electric protective cover of car |
-
2005
- 2005-10-19 CN CNB2005100104425A patent/CN100348454C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089228A (en) * | 1975-06-09 | 1978-05-16 | Easom Engineering & Manufacturing Corporation | Motion generating mechanism |
| US6102148A (en) * | 1998-10-21 | 2000-08-15 | Chien; Hsi-Hai | Electrically powered bicycle driving mechanism |
| CN2475656Y (en) * | 2001-04-10 | 2002-02-06 | 财团法人自行车工业研究发展中心 | Speed reducer for portable electric vehicle |
| CN2564797Y (en) * | 2002-07-23 | 2003-08-06 | 葛树祥 | Reduction box for curtain rolling machine |
| CN2685225Y (en) * | 2004-01-20 | 2005-03-16 | 广州市海星马电动车有限公司 | Electric Bicycle variable speed drive box |
| CN2696894Y (en) * | 2004-04-10 | 2005-05-04 | 陈志谦 | Speed reducer box for electric protective cover of car |
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| CN1757563A (en) | 2006-04-12 |
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