CN108869736A - Shifting vehicle gearbox axis elliptic wheel profile art chute designs method - Google Patents
Shifting vehicle gearbox axis elliptic wheel profile art chute designs method Download PDFInfo
- Publication number
- CN108869736A CN108869736A CN201810767464.3A CN201810767464A CN108869736A CN 108869736 A CN108869736 A CN 108869736A CN 201810767464 A CN201810767464 A CN 201810767464A CN 108869736 A CN108869736 A CN 108869736A
- Authority
- CN
- China
- Prior art keywords
- sliding slot
- shift
- curved surface
- block
- drive shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/321—Gear shift yokes, e.g. shift forks characterised by the interface between fork body and shift rod, e.g. fixing means, bushes, cams or pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/324—Gear shift yokes, e.g. shift forks characterised by slide shoes, or similar means to transfer shift force to sleeve
Abstract
It is preferably to meet people to research and develop to riding comfort and vehicle safety requirement the present invention relates to a kind of automotive transmission d-axis elliptic wheel profile art chute designs method.D-axis ellipse chute-type gearshift is made of shift fork system and shift drive system.Design curved surface sliding slot shift block sliding slot driving structure, determine the dimensional parameters and shape of sliding groove structure, calculate the driving torque numerical value of the shift drive shaft driving gear in different designs parameter, it determines the dimensional parameters of curved surface sliding slot shift block ellipse sliding slot, designs the shape of curved surface sliding slot shift block sliding slot.Driver's manipulation strength can be effectively reduced in d-axis chute-type shifting system, and it is handling to improve car steering.
Description
Technical field
The present invention relates to a kind of automotive transmission d-axis art chute designs method, especially a kind of automotive transmission d-axis is oval
Contour line art chute designs method, belongs to design of automobile transmission field.
Background technique
Tradition machinery formula speed changer needs driver's shift hunting to meet dynamic property requirement, and shift hunting has aggravated driver
Labor intensity, and the quality of driver's driving technology has large effect to the performance of automobile.Electric-controlled mechanical is automatic
Speed changer is realized on the basis of conventional gear box and dry clutch using advanced electron controls technology to be moved certainly
Gear, reequips that at low cost, transmission efficiency is high, occupies the transmission technology status in leading market suitable for manual transmission, but structure
It is more complicated, poor reliability, higher cost.D-axis chute-type gearshift realizes mechanical gear shift operation, has small in size, knot
The features such as structure is simple, easy to operate can be reduced the manipulation workload of driver, improve the economy of fuel oil, can also answer extensively
Automatic control work for transmission for vehicles.In shift design, need to consider shifting shaft driving moment, shift fork sliding axle friction
The factors such as power, shift shaft diameter, shift axial force.D-axis gear shifting structure is rationally designed, shift driving moment can be reduced, raising is changed
The fluency of gear.But sliding groove structure has direct influence to shift ride comfort, designing sliding slot curved surface appropriate can reduce
Driving torque improves the ride comfort of shift.
Summary of the invention
The invention patent is sliding the technical problem to be solved is that a kind of d-axis chute-type gearshift elliptic wheel profile is provided
Slot design method, its technical solution is as follows：
D-axis ellipse chute-type gearshift is made of shift fork system and shift drive system.Shift fork system is by shift fork
Axis, shift fork and shift fork sliding axle composition, shift fork axle are cross-section circle straight-bar, and both ends are fixedly connected with gear box casing, surface
Smooth, shift fork can be moved left and right by shift fork hole and shift fork axis connection, shift fork along shift fork axle axial direction；Shift fork sliding axle
For cross-section circle straight-bar, surface is smooth, and one end is fixedly connected with shift fork, the other end be embedded in curved surface sliding slot shift block sliding slot and with
The contact of curved surface sliding slot shift block sliding slot side.Shift drive system by shift drive shaft and shift drive shaft drive gear set at,
Shift drive shaft both ends are connect by bearing with gear box casing, and curved surface sliding slot shift block and shift drive shaft consolidation, shift are driven
Moving axis drives gear and shift drive shaft consolidation.
Curved surface sliding slot shift block sliding slot is made of straight part and curve chute part, when clutch disconnection, shift
When drive shaft is rotated clockwise from neutral gear position, curved surface sliding slot shift block is rotated with shift drive shaft, curved surface sliding slot shift block
Shift fork sliding axle generates the axial displacement of dextrad, and shift fork sliding axle pushes the axial position of the shift fork generation dextrad consolidated with it
It moves, shift fork pushes the axial displacement of combined cover generation dextrad, which is equal to selector fork shift spacing and engages spacing with gear
And when, complete gear shifting action, clutch closure；
Curved surface sliding slot shift block sliding slot driving structure is designed, determines the dimensional parameters and shape of sliding groove structure.Curved surface is sliding
Slot shift block sliding slot track is designed as elliptical shape, and shift drive shaft, which rotates a circle, needs to hang five gears, be respectively one to
Four gears and neutral gear gear, the perimeter of curved surface sliding slot shift block is 2 π r, each gear curved surface sliding slot shift block ellipse sliding slot bottom edge
Length is 1/5th of curved surface sliding slot shift block perimeter, so the length on curved surface sliding slot shift block ellipse sliding slot bottom edge is 2 π
R/5, the driving torque that shift sliding tooth wheel acts on shift drive shaft are
In formula, a and b are elliptical major semiaxis and semi-minor axis respectively, and r is the radius of curved surface sliding slot shift block, and μ is that shift fork is sliding
Coefficient of friction between moving axis and curved surface sliding slot shift block sliding slot side, FyIt is the axial force that shift fork generates shift drive shaft.Meter
The driving torque numerical value for calculating the shift drive shaft driving gear in different designs parameter, determines that curved surface sliding slot shift block is ellipse
The dimensional parameters of round sliding slot design the shape of curved surface sliding slot shift block sliding slot.
The present invention has the following advantages that compared with prior art：
1. change control system is using the interlock function of the latching characteristics and controller of d-axis sliding slot and coordination electrode, effectively
The position of drive mechanism is locked, mechanical interlocking and self-locking device is substituted, reduces the shift active force of gear handoff procedure.
2. driver's manipulation strength can be effectively reduced in d-axis chute-type shifting system, it is handling to improve car steering.
Detailed description of the invention
The invention patent is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 automotive transmission d-axis chute-type gear shifting structure schematic diagram；
Fig. 2 automotive transmission d-axis chute-type shifting shaft and curved surface sliding slot shift block structural schematic diagram；
Fig. 3 shift fork and shift fork sliding axle schematic diagram；
Fig. 4 curved surface sliding slot shift block ellipse sliding slot shape graph；
Fig. 5 curved surface sliding slot shift block ellipse sliding slot center line plane expanded schematic diagram；
Fig. 6 shift drive shaft driving torque and sliding slot semi-minor axis relational graph；
Fig. 7 shifting shaft driving torque and sliding slot major semiaxis relational graph；
Fig. 8 shift drive shaft driving torque and curved surface sliding slot shift block radius relationship figure.
In figure, 1, shift fork axle, 2, shift fork, 3, shift fork sliding axle, 4, shift driving gear, 5, curved surface sliding slot shift block, 6,
Shift drive shaft
Specific embodiment
1 to Fig. 4 the present invention is further described with reference to the accompanying drawing：
D-axis chute-type gearshift is made of shift fork system and shift drive system.Shift fork system is by shift fork axle 1, shift fork
2 and shift fork sliding axle 3 form, shift fork axle 1 is cross-section circle straight-bar, and both ends are fixedly connected with gear box casing, and surface is smooth,
Shift fork 2 is connect by shift fork hole with shift fork axle 1, and shift fork 2 can be moved left and right along 1 axial direction of shift fork axle；Shift fork sliding axle 3
For cross-section circle straight-bar, surface is smooth, and one end is fixedly connected with shift fork, and the other end is embedded in 5 sliding slot of curved surface sliding slot shift block simultaneously
It is contacted with 5 sliding slot side of curved surface sliding slot shift block.Shift drive system drives gear 4 by shift drive shaft 6 and shift drive shaft
Composition, shift 6 both ends of drive shaft are connect by bearing with gear box casing, and curved surface sliding slot shift block 5 and shift drive shaft 6 are solid
Knot, shift drive shaft driving gear 4 and shift drive shaft 6 consolidate.
5 sliding slot of curved surface sliding slot shift block is made of straight part and curve chute part, when clutch disconnection, shift
When drive shaft 6 is rotated clockwise from neutral gear position, curved surface sliding slot shift block 5 is rotated with shift drive shaft 6, the shift of curved surface sliding slot
5 shift fork of block, 2 sliding axle generates the axial displacement of dextrad, and shift fork sliding axle 3 pushes the shift fork 2 consolidated with it to generate dextrad
Axial displacement, shift fork 2 push the axial displacement of combined cover generation dextrad, which is equal to selector fork shift spacing and nibbles with gear
Close spacing and when, complete gear shifting action, clutch closure.
5 sliding slot driving structure of curved surface sliding slot shift block is designed, determines the dimensional parameters and shape of sliding groove structure.Curved surface is sliding
5 sliding slot track of slot shift block is designed as elliptical shape, and it is one respectively that shift drive shaft 6, which rotates a circle, which needs to hang five gears,
To four gears and neutral gear gear, the perimeter of curved surface sliding slot shift block 5 is 2 π r, the oval sliding slot of each gear curved surface sliding slot shift block 5
Bottom edge length is 1/5th of 5 perimeter of curved surface sliding slot shift block, so the length on the oval sliding slot of curved surface sliding slot shift block 5 bottom edge
Degree is 2 π r/5, and the driving torque that shift driving gear 4 acts on shift drive shaft 6 is
In formula, a and b are elliptical major semiaxis and semi-minor axis respectively, and r is the radius of curved surface sliding slot shift block 5, and μ is shift fork
Coefficient of friction between 5 sliding slot side of sliding axle 3 and curved surface sliding slot shift block, FyIt is the axial direction that 2 pairs of shift fork shift drive shafts 6 generate
Power.The driving torque numerical value for calculating the shift drive shaft driving gear 4 in different designs parameter, determines that curved surface sliding slot changes
The dimensional parameters of the oval sliding slot of block 5, design the shape of 5 sliding slot of curved surface sliding slot shift block.
1. curved surface sliding slot shift block of example, 5 radius is 0.05m and axial force is 50N, and oval sliding slot major semiaxis is
0.065m, Fig. 6 are shift drive shaft driving torque and sliding slot semi-minor axis relation curve.By analysis chart 6 it is found that shift drive shaft
6 driving torques increase with the increase of sliding slot semi-minor axis, but the two be not it is linear, with sliding slot semi-minor axis
Increase, shift 6 driving torque of drive shaft also accelerates to increase therewith.The appropriate size for reducing sliding slot semi-minor axis, can reduce shift
Axis driving torque.When one timing of sliding slot semi-minor axis, 6 driving torque of drive shaft of shifting gears is with rubbing between shift fork sliding axle 3 and sliding slot
It wipes coefficient to increase and increase, the coefficient of friction between reduction shift fork sliding axle 3 and sliding slot can reduce the shift driving of drive shaft 6 and turn round
Square.
When 2. sliding slot height of example is 0.05m and axial force is 50N, oval detent ends semiaxis is 0.03m, and Fig. 7 is to change
Gear shaft driving torque and sliding slot major semiaxis relation curve.As shown in Figure 7,6 driving torque of drive shaft is shifted gears as curved surface sliding slot changes
The reduction of 5 major semiaxis of block and reduce.When 5 major semiaxis of curved surface sliding slot shift block, one timing, shifting shaft driving torque is with shift fork
Coefficient of friction between sliding axle 3 and sliding slot increases and increases, and the coefficient of friction reduced between shift fork sliding axle 3 and sliding slot can reduce
Shift 6 driving torque of drive shaft.
3. axial force of example is 50N, and oval sliding slot major semiaxis is 0.065m, the friction between shift fork sliding axle 3 and sliding slot
Coefficient is that 0.1, Fig. 8 is shift drive shaft driving torque and curved surface sliding slot shift block radius relationship curve.As shown in Figure 8, it shifts gears
6 driving torque of drive shaft is with 5 semi-minor axis relationship of curved surface sliding slot shift block as shown, shift 6 driving torque of drive shaft is with song
The increase of 5 semi-minor axis of face sliding slot shift block and increase.When a timing, shift 6 driving torque of drive shaft is shifted gears with curved surface sliding slot
5 radius of block increases and increases, and increasing 5 radius of curved surface sliding slot shift block can reduce shift 6 driving torque of drive shaft.
By Fig. 6-8 it is found that shift 6 driving torque of drive shaft reduces as major semiaxis increases, with sliding slot semi-minor axis
Increase and increase, shift 6 driving torque of drive shaft can be effectively reduced by reducing semi-minor axis and increasing major semiaxis；Shift drive shaft 6
Driving torque increases as the coefficient of friction between shift fork sliding axle and sliding slot increases, and reduces rubbing between shift fork sliding axle and sliding slot
The size of shift 6 driving torque of drive shaft can be effectively reduced by wiping coefficient；Shift 6 driving torque of drive shaft is changed with curved surface sliding slot
5 radius of block increases and reduces.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
In the spirit and principles in the present invention, made any modification, equivalent replacement and improvement should be included in guarantor of the present invention
Within the scope of shield.
Claims (1)
1. providing a kind of d-axis chute-type gearshift ellipse art chute designs method, curved surface sliding slot shift block (5) sliding slot is designed
Driving structure determines the dimensional parameters and shape of sliding groove structure, and curved surface sliding slot shift block (5) sliding slot track is designed as ellipse
Shape, shift drive shaft (6), which rotates a circle, needs to hang five gears, is that one to four gear and neutral gear gear, curved surface sliding slot change respectively
The perimeter of block (5) is 2 π r, and the oval sliding slot bottom edge length of each gear curved surface sliding slot shift block (5) is the shift of curved surface sliding slot
/ 5th of block (5) perimeter, so the length on curved surface sliding slot shift block (5) ellipse sliding slot bottom edge is 2 π r/5, shift driving
Gear (4) act on shift drive shaft (6) driving torque be
In formula, a and b are elliptical major semiaxis and semi-minor axis respectively, and r is the radius of curved surface sliding slot shift block (5), and μ is that shift fork is sliding
Coefficient of friction between moving axis (3) and curved surface sliding slot shift block (5) sliding slot side, FyIt is that shift fork (2) generates shift drive shaft (6)
Axial force；The driving torque numerical value for calculating shift drive shaft driving gear (4) in different designs parameter determines bent
The dimensional parameters of face sliding slot shift block (5) ellipse sliding slot, design the shape of curved surface sliding slot shift block (5) sliding slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810767464.3A CN108869736A (en) | 2018-07-12 | 2018-07-12 | Shifting vehicle gearbox axis elliptic wheel profile art chute designs method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810767464.3A CN108869736A (en) | 2018-07-12 | 2018-07-12 | Shifting vehicle gearbox axis elliptic wheel profile art chute designs method |
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| CN108869736A true CN108869736A (en) | 2018-11-23 |
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| CN201810767464.3A Pending CN108869736A (en) | 2018-07-12 | 2018-07-12 | Shifting vehicle gearbox axis elliptic wheel profile art chute designs method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109284583A (en) * | 2018-11-27 | 2019-01-29 | 山东理工大学 | Shifting vehicle gearbox axis elliptic wheel profile sliding slot optimum design method |
| CN109538755A (en) * | 2018-12-11 | 2019-03-29 | 山东理工大学 | Shifting vehicle gearbox axis of a parabola contour line sliding slot optimum design method |
| CN109583121A (en) * | 2018-12-11 | 2019-04-05 | 山东理工大学 | Automotive transmission circle contour line shifting shaft sliding slot optimum design method |
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| CN101210614A (en) * | 2006-12-30 | 2008-07-02 | 比亚迪股份有限公司 | Automatic gearshift |
| CN105299220A (en) * | 2014-07-09 | 2016-02-03 | 丰田自动车株式会社 | Multiple-speed gearbox for vehicles |
| CN107191590A (en) * | 2017-07-12 | 2017-09-22 | 苏州绿控传动科技有限公司 | A kind of automatic gear shift mechanisms of AMT |
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2018
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Patent Citations (3)
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|---|---|---|---|---|
| CN101210614A (en) * | 2006-12-30 | 2008-07-02 | 比亚迪股份有限公司 | Automatic gearshift |
| CN105299220A (en) * | 2014-07-09 | 2016-02-03 | 丰田自动车株式会社 | Multiple-speed gearbox for vehicles |
| CN107191590A (en) * | 2017-07-12 | 2017-09-22 | 苏州绿控传动科技有限公司 | A kind of automatic gear shift mechanisms of AMT |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109284583A (en) * | 2018-11-27 | 2019-01-29 | 山东理工大学 | Shifting vehicle gearbox axis elliptic wheel profile sliding slot optimum design method |
| CN109538755A (en) * | 2018-12-11 | 2019-03-29 | 山东理工大学 | Shifting vehicle gearbox axis of a parabola contour line sliding slot optimum design method |
| CN109583121A (en) * | 2018-12-11 | 2019-04-05 | 山东理工大学 | Automotive transmission circle contour line shifting shaft sliding slot optimum design method |
| CN109583121B (en) * | 2018-12-11 | 2023-05-30 | 山东理工大学 | Optimal design method for sliding groove of gear shifting shaft of circular contour line of automobile transmission |
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