CN110523903A - A kind of step tooth hub shaping mechanism and its forming method - Google Patents
A kind of step tooth hub shaping mechanism and its forming method Download PDFInfo
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- CN110523903A CN110523903A CN201910776824.0A CN201910776824A CN110523903A CN 110523903 A CN110523903 A CN 110523903A CN 201910776824 A CN201910776824 A CN 201910776824A CN 110523903 A CN110523903 A CN 110523903A
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- mold core
- molded part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/06—Swaging presses; Upsetting presses
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- Mechanical Operated Clutches (AREA)
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Abstract
The invention discloses a kind of step tooth hub shaping mechanism and its forming methods, first lower die is fixedly connected with the workbench, first upper mold is set to the top of first lower die, the top of first upper mold is arranged in first actuator, first mold core and first molded part are set between first lower die and first upper mold, multiple first molded parts circumferentially surround first mold core, and each first molded part is when first upper mold is mobile towards first lower die, axial line around first mold core rotates, the first lug boss and the first support division on each first molded part correspond to the tooth socket of first mold core.The shaping mechanism, which reaches, to carry out external splines molding in bilayer to tooth hub simultaneously, reduce double-layered tooth hub molding procedure, promote double-layered tooth hub tooth Profile Machining precision, reduce the purpose of manufacturing cost.
Description
Technical field
The present invention relates to technical field of mechanical processing more particularly to a kind of step tooth hub shaping mechanism and its molding sides
Method.
Background technique
With the continuous development of automobile industry, domestic parts machining manufacture level is continuously improved, to the weight in gearbox
It is constantly soaring to want part tooth hub demand, and tooth hub structure constantly changes, manufacture difficulty is substantially improved.For step (bilayer)
For interior external splines molding, since structure limits, external splines in bilayer can not be completed by a punching press or rolling and formed, and
Multistep molding is affected to Double-layer tooth-type position degree, and needs to increase molding procedure, increases manufacturing cost.
Summary of the invention
The purpose of the present invention is to provide a kind of step tooth hub shaping mechanism and its forming methods, it is intended to solve existing skill
In art for external splines molding in step, since structure limits, can not pass through a punching press or rolling complete it is double
External splines molding in layer, and multistep molding is affected to Double-layer tooth-type position degree, and needs to increase molding procedure, increases system
Cause this technical issues of.
To achieve the above object, a kind of step tooth hub shaping mechanism that the present invention uses, including workbench and first group
Molding machine, the first composing type device setting on the workbench, the first composing type device include the first lower die,
First upper mold, the first actuator, the first mold core and the first molded part, first lower die are fixedly connected with the workbench, and
Above the workbench, first upper mold is set to the top of first lower die, and first actuator is arranged in institute
State the top of the first upper mold, first mold core and first molded part be set to first lower die and first upper mold it
Between, there is press section and the first lower extruding on the first of the upper layer and lower layer internal tooth of corresponding double-layered tooth hub blank on first mold core
Portion, the quantity at least two of first molded part, multiple first molded parts circumferentially surround first mold core, and
Each first molded part is when first upper mold is mobile towards first lower die, around the axial line of first mold core
It rotates, the first lug boss and the first support division on each first molded part correspond to the tooth socket of first mold core.
Wherein, the step tooth hub shaping mechanism further includes the second composing type device, the second composing type device packet
Include the second lower die, the second upper mold, the second actuator, the second mold core and the second molded part, second lower die and the workbench
It is fixedly connected, and is located above the workbench, second upper mold is set to the top of second lower die, second driving
Part is arranged in the top of second upper mold, and second mold core and second molded part are set to second lower die and described
Between second upper mold, the quantity at least two of second molded part, multiple second molded parts circumferentially surround described
Second mold core, and each second molded part is when second upper mold is mobile towards second lower die, around described second
The axial line of mold core rotates, and the second lug boss and the second support division on each second molded part correspond to second mould
The tooth socket of core.
Wherein, the step tooth hub shaping mechanism further includes third composing type device, the third composing type device packet
Include third lower die, third upper mold, third actuator, third mold core and third molded part, the third lower die and the workbench
It is fixedly connected, and is located above the workbench, the third upper mold is set to the top of the third lower die, the third driving
Part is arranged in the top of the third upper mold, and the third mold core and the third molded part are set to the third lower die and described
Between third upper mold, the quantity at least two of the third molded part, multiple third molded parts circumferentially surround described
Third mold core, and each third molded part is when the third upper mold is mobile towards the third lower die, around the third
The axial line of mold core rotates, and the third protrusion portion and third support division on each third molded part correspond to the third mould
The tooth socket of core.
Wherein, the first composing type device device, second molding machine and the third molding machine are successively set on
On the workbench, first mold core, second mold core are identical with the third mold core.
Wherein, have on each first molded part, each second molded part and each third molded part
There is engaging section, and the movement of each first molded part, each second molded part and each third molded part is equal
The displacement of generation is engaged with rack using involute profile, drives each engaging section rotation.
The present invention also provides a kind of step tooth hub forming methods, include the following steps:
The first composing type device squeezes the molded double-layered tooth hub blank being placed on first mold core
It is molded, complete the first sequence；
The second composing type device to the double-layered tooth hub blank of the first sequence of completion being placed on second mold core into
Row extrusion forming completes the second sequence；
The third composing type device to the double-layered tooth hub blank of the second sequence of completion being placed on the third mold core into
Row extrusion forming forms step tooth hub.
Wherein, first upper mold drives first mold core to move down, and each first molded part is along described
The axial line of first mold core rotates, and carries out extrusion forming to molded double-layered tooth hub blank, completes the first sequence.
Wherein, second upper mold drives second mold core to move down, and each second molded part is along described
The axial line of second mold core rotates, and carries out extrusion forming to the double-layered tooth hub blank for completing the first sequence, completes the first sequence.
Wherein, the third upper mold drives the third mold core to move down, and each third molded part is along described
The axial line of third mold core rotates, and carries out extrusion forming to the double-layered tooth hub blank for completing the second sequence, forms step tooth hub.
Wherein, basic circle occurs for involute corresponding to the step tooth hub shaping mechanism engaging tooth shape, and pairing is gradually opened
The parametric equation x=r (cos θ+θ sin θ) of line, y=r (sin θ-θ cos θ) are calculated, θ be occur the point of contact of line and basic circle with
Angle between circle center line connecting and X-axis, r are base radius, and the step tooth hub shaping mechanism rotates 1 °, axial displacement 2.589.
Of the invention a kind of step tooth hub shaping mechanism and its forming method, pass through first lower die and the work
Platform is fixedly connected, and is located above the workbench, and first upper mold is set to the top of first lower die, and described first drives
The top of first upper mold is arranged in moving part, and first mold core and first molded part are set to first lower die and institute
It states between the first upper mold, there is press section on the first of the upper layer and lower layer internal tooth of corresponding double-layered tooth hub blank on first mold core
With the first lower press section, the quantity at least two of first molded part, multiple first molded parts circumferentially surround institute
The first mold core is stated, and each first molded part is when first upper mold is mobile towards first lower die, around described the
The axial line of one mold core rotates, and the first lug boss and the first support division on each first molded part correspond to described first
The tooth socket of mold core.It is wherein cooperated, tooth hub can be carried out in bilayer simultaneously using the mold core and first molded part
External splines molding, reduces double-layered tooth hub molding procedure, promotes double-layered tooth hub tooth Profile Machining precision, reduces manufacturing cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the partial structure diagram of the first composing type device of the invention.
Fig. 2 is the partial structure diagram of the second composing type device of the invention.
Fig. 3 is the partial structure diagram of third composing type device of the invention.
Fig. 4 is structural schematic diagram when the first composing type device of the invention is not operating.
Structural schematic diagram when Fig. 5 is the first composing type device action of the invention.
Fig. 6 is the structural schematic diagram of double-layered tooth hub blank of the invention before the forming.
Fig. 7 is the preliminary molding structural schematic diagram of double-layered tooth hub of the invention.
Fig. 8 is the molding structural schematic diagram of the second sequence of double-layered tooth hub of the invention.
Fig. 9 is the structural schematic diagram of the final shaping unit of double-layered tooth hub of the invention.
Figure 10 is the structural schematic diagram of the first mold core of the invention.
Figure 11 is the schematic diagram of internal structure of step tooth hub shaping mechanism of the invention.
Figure 12 is the flow chart of step tooth hub forming method of the invention.
100- step tooth hub shaping mechanism, 10- workbench, 11- engaging section, the first composing type of 20- device, 21- first
Lower die, the first upper mold of 22-, the first actuator of 23-, the first mold core of 24-, lower press sections of press section, 242- first on 241- first,
The first molded part of 25-, the first lug boss of 251-, the first support division of 252-, the second composing type of 30- device, the second lower die of 31-, 32-
Second upper mold, the second actuator of 33-, the second mold core of 34-, the second molded part of 35-, the second lug boss of 351-, 352- second are supported
Portion, 40- third composing type device, 41- third lower die, 42- third upper mold, 43- third actuator, 44- third mold core, 45-
Three molded parts, 451- third protrusion portion, 452- third support division, 200- step tooth hub forming method.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, in the description of the present invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
Fig. 1 to Figure 11 is please referred to, the present invention provides a kind of step tooth hub shaping mechanisms 100, including 10 He of workbench
First composing type device 20, the first composing type device 20 are arranged on the workbench 10, the first composing type device
20 include the first lower die 21, the first upper mold 22, the first actuator 23, the first mold core 24 and the first molded part 25, under described first
Mould 21 is fixedly connected with the workbench 10, and is located at 10 top of workbench, and first upper mold 22 is set to described first
The top of lower die 21, first actuator 23 are arranged in the top of first upper mold 22, first mold core 24 and described
First molded part 25 is set between first lower die 21 and first upper mold 22, is had on first mold core 24 corresponding double
Press section 241 and the first lower press section 242 on the first of the upper layer and lower layer internal tooth of layer tooth hub blank, first molded part 25
Quantity at least two, multiple first molded parts 25 circumferentially surround first mold core 24, and each the first one-tenth described
When first upper mold 22 is mobile towards first lower die 21, the axial line around first mold core 24 rotates type part 25,
The first lug boss 251 and the first support division 252 on each first molded part 25 correspond to the tooth of first mold core 24
Slot.
In the present embodiment, first actuator 23 is hydraulic cylinder, when needing to step tooth hub i.e. double-layered tooth
When hub forms, double-layered tooth hub blank is placed on first mold core 24, then first actuator 23 drives described the
Vertically first lower die 21 is mobile for one upper mold 22, after first upper mold 22 is supported with double-layered tooth hub blank, thus
Drive first mold core 24 mobile towards first lower die 21, while first mold core 24 is downward, two and its
Above first molded part 25 is rotated around the axial line of first mold core 24, thus described on first mold core 24
Press section 241 and the first lower press section 242 and first lug boss on each first molded part 25 on first
251 and first support division 252 cooperate jointly, it is inside and outside while squeezing double-layered tooth hub blank, tooth hub can be carried out simultaneously double
External splines molding in layer reduces double-layered tooth hub molding procedure with this to one-step forming at the beginning of step tooth hub, promotes double-layered tooth hub tooth form
Machining accuracy reduces mold input cost, to reduce manufacturing cost.
Further, the step tooth hub shaping mechanism 100 further includes the second composing type device 30, second composition
Type device 30 includes the second lower die 31, the second upper mold 32, the second actuator 33, the second mold core 34 and the second molded part 35, described
Second lower die 31 is fixedly connected with the workbench 10, and is located at 10 top of workbench, and second upper mold 32 is set to institute
The top of the second lower die 31 is stated, the top of second upper mold 32, second mold core 34 is arranged in second actuator 33
And second molded part 35 is set between second lower die 31 and second upper mold 32, the number of second molded part 35
Amount at least two, multiple second molded parts 35 circumferentially surround second mold core 34, and each second molding
When second upper mold 32 is mobile towards second lower die 31, the axial line around second mold core 34 rotates part 35, often
The second lug boss 351 and the second support division 352 on a second molded part 35 correspond to the tooth socket of second mold core 34.
The step tooth hub shaping mechanism 100 further includes third composing type device 40, the third composing type device 40
Including third lower die 41, third upper mold 42, third actuator 43, third mold core 44 and third molded part 45, the third lower die
41 are fixedly connected with the workbench 10, and are located at 10 top of workbench, and the third upper mold 42 is set under the third
The top of the third upper mold 42, the third mold core 44 and described is arranged in the top of mould 41, the third actuator 43
Three molded parts 45 are set between the third lower die 41 and the third upper mold 42, and the quantity of the third molded part 45 is at least
Two, multiple third molded parts 45 circumferentially surround the third mold core 44, and each third molded part 45 is in institute
State third upper mold 42 it is mobile towards the third lower die 41 when, the axial line around the third mold core 44 rotates, each described the
Third protrusion portion 451 and third support division 452 on three molded parts 45 correspond to the tooth socket of the third mold core 44.
First composing type device, 20 device, the second composing type device 30 and the third composing type device 40 are successively set
It sets on the workbench 10, first mold core 24, second mold core 34 and the third mold core 44 are identical.
In the present embodiment, second actuator 33 and the third actuator 43 with first actuator 23
It is identical, it is hydraulic cylinder, due to 20 device of the first composing type device, the second composing type device 30 and the third
Composing type device 40 is successively set on the workbench 10, first mold core 24, second mold core 34 and the third
Mold core 44 is identical.It, will be preliminary molding double after carrying out just one-step forming to double-layered tooth hub blank using first molding die
Layer tooth hub is placed on second mold core 34, and then second actuator 33 drives second upper mold 32 vertically institute
It is mobile to state the second lower die 31, after second upper mold 32 is supported with preliminary molding double-layered tooth hub, to drive described second
Mold core 34 is mobile towards second lower die 31, while second mold core 34 is downward, two and its above described the
Two molded parts 35 are rotated around the axial line of second mold core 34, thus press section on described first on second mold core 34
Press section 242 and second lug boss 351 and described second on each second molded part 35 under 241 and described first
Support division 352 cooperates jointly, and the preliminary molding double-layered tooth hub of inside and outside while extruding is completed to form the second sequence of double-layered tooth hub and be squeezed
Pressure；
It will complete the double-layered tooth hub that the second sequence squeezes later to be placed on the third mold core 44, then the third driving
Part 43 drives the third upper mold 42, and vertically the third lower die 41 is mobile, in the third upper mold 42 and the second sequence of completion
After the double-layered tooth hub of extrusion forming supports, to drive the third mold core 44 mobile towards the third lower die 41, described
While third mold core 44 is downward, two and its third molded part 45 above are revolved around the axial line of the third mold core 44
Turn, thus press section 241 and the first lower press section 242 and each described the on described first on the third mold core 44
The third protrusion portion 451 and the third support division 452 on three molded parts 45 cooperate jointly, inside and outside while the second sequence of extruding
The double-layered tooth hub of extrusion forming, so that the second sequence Contoured squeeze final molding of double-layered tooth hub, obtains step tooth hub.Pass through benefit
It can be to described double with the first composing type device 20, the second composing type device 30 and the third composing type device 40
Layer tooth hub blank, forms, while processing to double-layered tooth hub tooth form in three times, reduces double-layered tooth hub molding procedure, is promoted
Double-layered tooth hub tooth Profile Machining precision simplifies mould structure, mold input cost is reduced, to reduce manufacturing cost.
Further, each first molded part 25, each second molded part 35 and each third molding
Engaging section 11, and each first molded part 25, each second molded part 35 and each described are all had on part 45
The displacement of generation is engaged with rack in the movement of three molded parts 45 using involute profile, and each engaging section 11 is driven to revolve
Turn.
In the present embodiment, each first molded part 25, each second molded part 35 and each described
The displacement of generation is engaged with rack in the movement of three molded parts 45 using involute profile, and each engaging section 11 is driven to revolve
Turn, so as to form the external compression of double-layered tooth hub.
Figure 12 is please referred to, the present invention also provides a kind of step tooth hub forming methods 200, include the following steps:
S100: the first composing type device 20 is to the molded double-layered tooth hub hair being placed on first mold core 24
Base carries out extrusion forming, completes the first sequence；
Drive first mold core 24 to move down by first upper mold 22, each first molded part 25 along
The axial line of first mold core 24 rotates, thus press section 241 and described the on described first on first mold core 24
Once first lug boss 251 on press section 242 and each first molded part 25 and first support division 252 are total
It is inside and outside while squeezing double-layered tooth hub blank with cooperation, external splines in bilayer can be carried out to tooth hub simultaneously and formed, with this to step
The first one-step forming of formula tooth hub, completes the first sequence.
S200: double-layered tooth of the second composing type device 30 to the first sequence of completion being placed on second mold core 34
Hub blank carries out extrusion forming, completes the second sequence；
Drive second mold core 34 to move down by second upper mold 32, each second molded part 35 along
The axial line of second mold core 34 rotates, thus press section 241 and described the on described first on second mold core 34
Once second lug boss 351 on press section 242 and each second molded part 35 and second support division 352 are total
With cooperation, the preliminary molding double-layered tooth hub of inside and outside while extruding completes the second sequence Contoured squeeze to double-layered tooth hub.
S300: double-layered tooth of the third composing type device 40 to the second sequence of completion being placed on the third mold core 44
Hub blank carries out extrusion forming, forms step tooth hub.
Drive the third mold core 44 to move down by the third upper mold 42, each third molded part 45 along
The axial line of the third mold core 44 rotates, thus press section 241 and described the on described first on the third mold core 44
Once the third protrusion portion 451 on press section 242 and each third molded part 45 and the third support division 452 are total
With cooperation, double-layered tooth hub that is inside and outside while squeezing the second sequence extrusion forming, so that the second sequence Contoured squeeze of double-layered tooth hub is final
Molding, obtains step tooth hub.
Basic circle occurs for involute corresponding to 100 engaging tooth shape of step tooth hub shaping mechanism, and matches involute
Parametric equation x=r (cos θ+θ sin θ), y=r (sin θ-θ cos θ) calculated, and θ is point of contact and the circle that line and basic circle occurs
Angle between heart line and X-axis, r are base radius, and the step tooth hub shaping mechanism 100 rotates 1 °, axial displacement
2.589.By the calculating to size, intercepts major diameter roller portion region and participate in the moulding of tooth hub, be kept fixed the center of circle, be designed to
The shape of type mechanism and double-layered tooth hub contact site, mechanism drive part position are designed as imitative wheel and rack engagement by calculating
Involute in form.Furthermore by utilizing the first composing type device 20, the second composing type device 30 and the third group
Molding machine 40 can form in three times the double-layered tooth hub blank, while process to double-layered tooth hub tooth form, reduce
Double-layered tooth hub molding procedure promotes double-layered tooth hub tooth Profile Machining precision, simplifies mould structure, reduces mold input cost, from
And reduce manufacturing cost.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and weighs according to the present invention
Benefit requires made equivalent variations, still belongs to the scope covered by the invention.
Claims (10)
1. a kind of step tooth hub shaping mechanism, which is characterized in that
Including workbench and the first composing type device, the first composing type device is arranged on the workbench, and described first
Composing type device includes the first lower die, the first upper mold, the first actuator, the first mold core and the first molded part, first lower die
It being fixedly connected, and is located above the workbench with the workbench, first upper mold is set to the top of first lower die,
First actuator is arranged in the top of first upper mold, and first mold core and first molded part are set to described the
Between one lower die and first upper mold, there is the of the upper layer and lower layer internal tooth of corresponding double-layered tooth hub blank on first mold core
Press section and the first lower press section, the quantity at least two of first molded part, multiple first molded parts are on one
Circumferentially around first mold core, and each first molded part is mobile towards first lower die in first upper mold
When, the axial line around first mold core rotates, and the first lug boss and the first support division on each first molded part are equal
The tooth socket of corresponding first mold core.
2. step tooth hub shaping mechanism as described in claim 1, which is characterized in that
The step tooth hub shaping mechanism further includes the second composing type device, and the second composing type device includes under second
Mould, the second upper mold, the second actuator, the second mold core and the second molded part, second lower die are fixedly connected with the workbench,
And be located above the workbench, second upper mold is set to the top of second lower die, and the second actuator setting exists
The top of second upper mold, second mold core and second molded part are set to second lower die and second upper mold
Between, the quantity at least two of second molded part, multiple second molded parts circumferentially surround second mold core,
And each second molded part is when second upper mold is mobile towards second lower die, around the axial direction of second mold core
Line rotates, and the second lug boss and the second support division on each second molded part correspond to the tooth socket of second mold core.
3. step tooth hub shaping mechanism as claimed in claim 2, which is characterized in that
The step tooth hub shaping mechanism further includes third composing type device, and the third composing type device includes under third
Mould, third upper mold, third actuator, third mold core and third molded part, the third lower die are fixedly connected with the workbench,
And be located above the workbench, the third upper mold is set to the top of the third lower die, and the third actuator setting exists
The top of the third upper mold, the third mold core and the third molded part are set to the third lower die and the third upper mold
Between, the quantity at least two of the third molded part, multiple third molded parts circumferentially surround the third mold core,
And each third molded part is when the third upper mold is mobile towards the third lower die, around the axial direction of the third mold core
Line rotates, and the third protrusion portion and third support division on each third molded part correspond to the tooth socket of the third mold core.
4. step tooth hub shaping mechanism as claimed in claim 3, which is characterized in that
First composing type device device, second molding machine and the third molding machine are successively set on the workbench
On, first mold core, second mold core are identical with the third mold core.
5. step tooth hub shaping mechanism as claimed in claim 4, which is characterized in that
Engaging section is all had on each first molded part, each second molded part and each third molded part,
And the movement of each first molded part, each second molded part and each third molded part utilizes involute
The displacement of generation is engaged with rack in tooth form, drives each engaging section rotation.
6. a kind of step tooth hub forming method, which comprises the steps of:
The first composing type device is squeezed into the molded double-layered tooth hub blank being placed on first mold core
Type completes the first sequence；
The second composing type device squeezes the double-layered tooth hub blank for the first sequence of completion being placed on second mold core
It is molded, complete the second sequence；
The third composing type device squeezes the double-layered tooth hub blank for the second sequence of completion being placed on the third mold core
It is molded, form step tooth hub.
7. step tooth hub forming method as claimed in claim 6, which is characterized in that
First upper mold drives first mold core to move down, and each first molded part is along first mold core
Axial line rotation, carries out extrusion forming to molded double-layered tooth hub blank, completes the first sequence.
8. step tooth hub forming method as claimed in claim 7, which is characterized in that
Second upper mold drives second mold core to move down, and each second molded part is along second mold core
Axial line rotation carries out extrusion forming to the double-layered tooth hub blank for completing the first sequence, completes the first sequence.
9. step tooth hub forming method as claimed in claim 8, which is characterized in that
The third upper mold drives the third mold core to move down, and each third molded part is along the third mold core
Axial line rotation carries out extrusion forming to the double-layered tooth hub blank for completing the second sequence, forms step tooth hub.
10. step tooth hub forming method as claimed in claim 9, which is characterized in that
Basic circle occurs for involute corresponding to the step tooth hub shaping mechanism engaging tooth shape, and matches the parameter side of involute
Journey x=r (cos θ+θ sin θ), y=r (sin θ-θ cos θ) are calculated, θ be occur line and basic circle point of contact and circle center line connecting and
Angle between X-axis, r are base radius, and the step tooth hub shaping mechanism rotates 1 °, axial displacement 2.589.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776824.0A CN110523903B (en) | 2019-08-22 | 2019-08-22 | Step type gear hub forming mechanism and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776824.0A CN110523903B (en) | 2019-08-22 | 2019-08-22 | Step type gear hub forming mechanism and forming method thereof |
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| Publication Number | Publication Date |
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| CN110523903A true CN110523903A (en) | 2019-12-03 |
| CN110523903B CN110523903B (en) | 2022-06-03 |
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| CN201910776824.0A Active CN110523903B (en) | 2019-08-22 | 2019-08-22 | Step type gear hub forming mechanism and forming method thereof |
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