CN107218380A - Driven gear of engine balance shaft and bent axle drive gear Mesh Clearance Adjustment method - Google Patents
Driven gear of engine balance shaft and bent axle drive gear Mesh Clearance Adjustment method Download PDFInfo
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- CN107218380A CN107218380A CN201710528797.6A CN201710528797A CN107218380A CN 107218380 A CN107218380 A CN 107218380A CN 201710528797 A CN201710528797 A CN 201710528797A CN 107218380 A CN107218380 A CN 107218380A
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- balance shaft
- fixed
- gear
- bent axle
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- 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
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses a kind of driven gear of engine balance shaft and bent axle drive gear Mesh Clearance Adjustment method, process gasket pad is fixed between cover and the connecting portion of engine housing mounted in balance shaft, the fixed disk of crank shaft gear is fixed on crankshaft end again, the connector of balance shaft timing positioner is sleeved on secondary balance shaft end, the support base of balance shaft gap measuring apparatus is fixed on to the box top of engine, turning crankshaft, read and record the difference of the greatest measure shown on amesdial and minimum value, mesh equation according to parallel axes roller gear, calculate the operating center distance and its difference without sideshake centre-to-centre spacing of drive gear and the second driven gear, it is determined that pad fixes the thickness of required pad between cover and engine housing mounted in balance shaft, process gasket is finally replaced by the pad of calculated thickness.The present invention can quickly and accurately adjust the backlash value of the drive gear engagement place on driven gear and bent axle in balance shaft.
Description
Technical field
The invention belongs to the installation method of part of automobile engine, and in particular to a kind of driven gear of engine balance shaft
Method for adjusting gear backlash is engaged with bent axle drive gear.
Background technology
When automobile engine is in working condition, piston has larger inertia force in cylinder, and the inertia force is uneven,
Easily make engine causes vibration.In order to eliminate or reduce this vibration, double balance shaft is generally installed in automobile engine, profit
The two-stage reciprocating inertia force produced in engine operation process is offset with the disequilibrium of double balance shaft itself, concrete structure is such as
Shown in Fig. 7 and Fig. 8, drive gear 26 is installed on the bent axle 23 in engine housing 22, the first balance shaft 24 and second is flat
The axle 25 that weighs is fixed cover 30 by balance shaft and is arranged on the top surface of engine housing 22, and first is provided with the first balance shaft 24
Second driven gear 28, the driven gear 28 of drive gear 26 and second are installed on driven gear 27, secondary balance shaft 25
Engagement, the second driven gear 28 is engaged with the first driven gear 27.In said structure, due in meshed transmission gear, in order to
Lubricating oil film is formed between contacting profile, it is to avoid because the gear teeth rub sassafras fever expansion and stuck, gap must be left between flank profil,
This gap is referred to as backlash, because gear drive requires very high to the backlash of gear engagement place, when double balance shaft assembling
The accident such as utter long and high-pitched sounds, seize can be produced during inaccurate or bad uniformity, in engine operation process.Therefore in double balance shaft assembling
During, it is necessary to which the backlash of gear engagement place is repeatedly detected and adjusted to reach matching requirements, efficiency of assembling pole
It is low, and assembling effect is not good.
The content of the invention
It is an object of the invention to provide a kind of driven gear of engine balance shaft and bent axle drive gear Mesh Clearance Adjustment
Method, quickly and accurately to adjust the backlash value of the drive gear engagement place on driven gear and bent axle in balance shaft.
Driven gear of engine balance shaft of the present invention and bent axle drive gear Mesh Clearance Adjustment method, including with
Lower step：
Step 1: preparing crank shaft gear, crank rotation angle control device, balance shaft gap measuring apparatus and balance
Axle timing positioner, the crank shaft gear includes the fixed disk and dial being stacked, in the inner side of fixed disk
Alignment pin is provided with face, angled groove is indicated in dial outer rim；Crank rotation angle control device includes pointer and referred to
Pin fixed seat, pointer is horizontally fixed in pointer fixed seat；Balance shaft gap measuring apparatus includes support base, fixed mount and thousand points
Table, fixed mount is arranged on support base, and amesdial is arranged on fixed mount；Balance shaft timing positioner includes connector, set
Ring and locking nut, integrally connection has cylinder table to the end face of connector, and integrally connection has screw rod, connector for cylinder table outer face
Other end offer sleeve joint hole, cylinder table, screw rod and sleeve joint hole coaxial line offer in connector side and sleeve joint hole connect
Logical screwed hole, is connected with lock-screw in it；Baseline rod is vertically and fixedly provided with collar external cylindrical surface, the collar is sleeved on the circle
Coordinate on pylon with cylinder table gap, locking nut is screwed on the screw rod is pressed on connection end surface by the collar.
Step 2: process gasket pad is fixed between cover and the connecting portion of engine housing mounted in balance shaft, then will
Balance shaft is fixed cover and is fixed on engine housing, now, the second driven gear on secondary balance shaft and the driving on bent axle
The centre-to-centre spacing of gear is maximum.
Step 3: the fixed disk of crank shaft gear is fixed on into crankshaft end, the angle control of adjustment crank rotation
The pointer of device is located on same vertical plane with crankshaft center line, and pointer fixed seat is fixed on into the box top of engine, turns
Dynamic crankshaft, makes the zero line of the dial upper angle groove of crank shaft gear be alignd with pointer；Balance shaft timing is positioned and filled
The connector put is sleeved on secondary balance shaft end, tightens lock-screw, and the support base of balance shaft gap measuring apparatus is fixed
In the box top of engine.
Step 4: turning crankshaft tumbler, makes bent axle be rotated in the clockwise direction 10 °, rotational lantern ring erects baseline rod
It is straight upward, then locking nut is tightened, the measurement end of amesdial and the reference plane perpendicular contact of baseline rod are adjusted, and by amesdial
The numerical value of display is reset, and is then carried out rotatable dynamic balance axle timing positioner, the second driven gear on secondary balance shaft is existed
Between cog is produced with the engagement place of the drive gear on bent axle to rotate, and is read and is recorded the greatest measure shown on amesdial and minimum
The difference of numerical value.
Step 5: turning crankshaft tumbler, make bent axle turn to successively along clockwise direction 30 °, 100 °, 190 °,
210 °, 280 ° of positions, repeat step four.
Step 6: the average value of above-mentioned six groups of differences is calculated, the mesh equation according to parallel axes roller gear：
Calculate the operating center distance a of drive gear and the second driven gearwWith its difference without sideshake centre-to-centre spacing a, according to
The thickness of pad needed for the difference determines pad between the bottom surface of balance shaft fixation cover and engine housing by form 1.
Wherein, jwtIt is pressure angle, α for backlash, αwtFor open top container ship angle, awIt is no sideshake for operating center distance, a
Centre-to-centre spacing, x are that modification coefficient, m are that modulus, z are the number of teeth, z1For the number of teeth of drive gear, z2For the number of teeth of the second driven gear.
Form 1
Step 7: the process gasket in step one to be replaced by the pad that thickness is calculated in step 5.
Further, the support base is L-shaped, constitutes, is opened up on riser by transverse slat and with the riser that transverse slat is connected vertically
There is fixed mount mounting hole；The fixed mount is L-shaped, is constituted by stock and with stock quarter butt connected vertically, the stock of fixed mount
In fixed mount mounting hole, the top surface of riser is connected with lock-screw and the stock of fixed mount is fixed on support base riser
End；The quarter butt end of fixed mount offers dop, and a lateral strut is fixed in dop, and the amesdial is arranged on lateral strut
End.
Further, handle fixed base is provided with the crank shaft gear, the handle fixed base and fixed disk position
In dial both sides, three is fixed together with bolt, and handle is provided with Handle mount two ends.
Balance shaft of engine meshing gear method for adjusting gear backlash of the present invention, by crank shaft gear, bent axle
Turn Angle Control System, balance shaft gap measuring apparatus and balance shaft timing positioner, are measured using amesdial method and engaged
The backlash value of gear, wherein, crank shaft gear and crank rotation angle control device can accurately control turning for bent axle
Dynamic angle, it is ensured that meshing gear a few place's backlash values representative when rotating a whole circle are measured, it is no to repeat to survey
Amount or test leakage.Before measurement, by fixing pad dress process gasket between cover and the connecting portion of engine housing in balance shaft, make two
Centre-to-centre spacing between meshing gear is maximum, it is ensured that have gap, the sassafras that will not be rubbed because of gear teeth heating between the flank profil of two meshing gears
It is caused expansion and it is stuck.After measurement, according to measurement result, institute is accurately calculated by the mesh equation of parallel axes roller gear
The thickness of pad is needed, and with the pad replacing process gasket of the thickness, balance shaft is disposably adjusted to optimal installment state,
Without debugging repeatedly, the adjustment time of balance shaft clearance is reduced, operating efficiency is improved.
Brief description of the drawings
Fig. 1 is the shaft side figure of crank shaft gear in the present invention；
Fig. 2 is the shaft side figure of crank rotation angle control device in the present invention；
Fig. 3 is the shaft side figure of balance shaft gap measuring apparatus in the present invention；
Fig. 4 is the exploded perspective view of balance shaft timing positioner in the present invention；
Fig. 5 is the front view of connector in the present invention；
Fig. 6 be by crank shaft gear, crank rotation angle control device, balance shaft gap measuring apparatus and balance shaft just
When positioner be arranged on engine housing on shaft side figure；
Fig. 7 is drive gear, the first driven gear, the meshing relation schematic diagram of the second driven gear；
Fig. 8 is that double balance shaft fixes the shaft side figure that cover is arranged on engine housing by balance shaft；
In figure：1-fixed disk, 2-dial, 3-handle, 4-handle fixed base, 5-alignment pin, 6-pointer are fixed
Seat, 7-pointer, 8-support base, 9-lock-screw, 10-fixed mount mounting hole, 11-fixed mount, 12-dop, 13-horizontal stroke
To pole, 14-amesdial, 15-connector, 16-screwed hole, 17-screw rod, 18-collar, 19-locking nut, 20-base
Quasi- bar, 21-sleeve joint hole, 22-casing, 23-bent axle, 24-the first balance shafts, 25-secondary balance shaft, 26-drive gear,
27-the first driven gears, 28-the second driven gears, 29-pad, 30-balance shaft fix cover.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Balance shaft of engine meshing gear method for adjusting gear backlash of the present invention, comprises the following steps：
Step 1: preparing crank shaft gear, crank rotation angle control device, balance shaft gap measuring apparatus and balance
Axle timing positioner.The crank shaft gear as shown in figure 1, fixed disk 1 and dial 2 including being stacked,
Alignment pin 5 is provided with the medial surface of fixed disk 1, angled groove is indicated in the outer rim of dial 2.The crank rotation angle control
Device processed is as shown in Fig. 2 including pointer 7 and pointer fixed seat 6, pointer 7 is horizontally fixed in pointer fixed seat 6.The balance
Shaft clearance measurement apparatus is as shown in figure 3, including support base 8, fixed mount 11 and amesdial 14, fixed mount 11 is arranged on support base 8
On, amesdial 14 is arranged on fixed mount 11.The balance shaft timing positioner as shown in Figure 4 and Figure 5, including connector
15th, the collar 18 and locking nut 19, integrally connection has cylinder table to the end face of connector 15, and integrally connection has for cylinder table outer face
Screw rod 17, the other end of connector 15 offers sleeve joint hole 21, cylinder table, screw rod 17 and the coaxial line of sleeve joint hole 21, in connection
First 15 side offers the screwed hole 16 connected with sleeve joint hole 21, is connected with lock-screw 9 in it；Hung down on the external cylindrical surface of the collar 18
Straight to be fixed with baseline rod 20, the collar 18 is sleeved on the cylinder table to be coordinated with cylinder table gap, and locking nut 19 is screwed in institute
State on screw rod 17 and the collar 18 is pressed on the end face of connector 15.
Step 2: as shown in figure 8, thickness is fixed into cover 30 with starting mounted in balance shaft by process gasket pad for 1.64mm
Between the connecting portion of box body 22, balance shaft is then fixed into cover 30 and is fixed on engine housing 22, now, the second balance
The centre-to-centre spacing of the second driven gear 28 on axle 25 and the drive gear 26 on bent axle 23 is maximum.
Step 3: as shown in fig. 6, the fixed disk 1 of crank shaft gear is fixed on into the end of bent axle 23, adjustment bent axle
The pointer 7 of Turn Angle Control System is located on same vertical plane with the axis of bent axle 23, and pointer fixed seat 6 is fixed on started
The top surface of casing 22 of machine, turning crankshaft 23 makes 7 pairs of the zero line and pointer of the upper angle groove of dial 2 of crank shaft gear
Together；The connector 15 of balance shaft timing positioner is sleeved on the end of secondary balance shaft 25, lock-screw 9 is tightened, will balance
The support base 8 of shaft clearance measurement apparatus is fixed on the top surface of casing 22 of engine.
Step 4: as shown in fig. 7, turning crankshaft tumbler, makes bent axle 23 be rotated in the clockwise direction 10 °, turning set
Ring 18 makes baseline rod 20 straight up, then tightens locking nut 19, adjusts the measurement end of amesdial 14 and the benchmark of baseline rod 20
Face perpendicular contact, and the numerical value shown on amesdial 14 is reset, then carry out rotatable dynamic balance axle timing positioner, make second
The second driven gear 28 in balance shaft 25 is producing between cog rotation with the engagement place of the drive gear 26 on bent axle 23, reads simultaneously
The greatest measure and the difference of minimum value shown on record amesdial 14.
Step 5: turning crankshaft tumbler, make bent axle 23 turn to successively along clockwise direction 30 °, 100 °, 190 °,
210 °, 280 ° of positions, repeat step four.
Step 6: the average value of above-mentioned six groups of differences is calculated, the mesh equation according to parallel axes roller gear：
Calculate the operating center distance a of the driven gear 28 of drive gear 26 and secondwWith its difference without sideshake centre-to-centre spacing a,
The pad 29 according to needed for the difference determines pad between the bottom surface of balance shaft fixation cover 30 and engine housing 22 by form 1
Thickness.
Wherein, jwtIt is pressure angle, α for backlash, αwtFor open top container ship angle, awIt is no sideshake for operating center distance, a
Centre-to-centre spacing, x are that modification coefficient, m are that modulus, z are the number of teeth, z1For the number of teeth of drive gear 26, z2For the tooth of the second driven gear 28
Number.
Form 1
Step 7: the process gasket in step one to be replaced by the pad 29 that thickness is calculated in step 5.
Specifically, as shown in figure 3, the support base 8 is L-shaped, constituted by transverse slat and with the riser that transverse slat is connected vertically,
Fixed mount mounting hole 10 is offered on riser；The fixed mount 11 is L-shaped, by stock and with stock quarter butt group connected vertically
Into the stock of fixed mount 11 is located in fixed mount mounting hole 10, and the top surface of riser is connected with lock-screw 9 by the length of fixed mount 11
Bar is fixed on the riser upper end of support base 8；The quarter butt end of fixed mount 11 offers dop 12, and a lateral strut 13 is fixed on dop
In 12, the amesdial 14 is arranged on the end of lateral strut 13.
In the present embodiment, for the ease of operating crank tumbler, as shown in figure 1, being set on the crank shaft gear
Handle fixed base 4 is equipped with, the handle fixed base 4 and the fixed disk 1 are located at the both sides of dial 2, and three is fixedly connected with bolt
Together, it is provided with handle 3 at the mounting seat two ends of handle 3.
Claims (3)
1. driven gear of engine balance shaft and bent axle drive gear Mesh Clearance Adjustment method, it is characterised in that：Including following
Step：
Step 1: preparing crank shaft gear, crank rotation angle control device, balance shaft gap measuring apparatus and balance shaft just
When positioner, the crank shaft gear includes the fixed disk (1) and dial (2) that are stacked, in fixed disk
Alignment pin (5) is provided with side, angled groove is indicated in dial outer rim；Crank rotation angle control device includes pointer
(7) and pointer fixed seat (6), pointer is horizontally fixed in pointer fixed seat；Balance shaft gap measuring apparatus includes support base
(8), fixed mount (11) and amesdial (14), fixed mount are arranged on support base, and amesdial is arranged on fixed mount；Balance shaft is just
When positioner include connector (15), the collar (18) and locking nut (19), integrally connection has cylinder for the end face of connector
Platform, integrally connection has screw rod (17) for cylinder table outer face, and the other end of connector offers sleeve joint hole (21), cylinder table, spiral shell
Bar and sleeve joint hole coaxial line, the screwed hole (16) that is connected with sleeve joint hole is offered in connector side, is connected with locking screw in it
Nail；Baseline rod (20) is vertically and fixedly provided with collar external cylindrical surface, the collar is sleeved on the cylinder table to be coordinated with cylinder table gap,
Locking nut is screwed on the screw rod is pressed on connection end surface by the collar；
Step 2: process gasket pad is fixed between cover (30) and the connecting portion of engine housing (22) mounted in balance shaft, so
Balance shaft fixation cover is fixed on engine housing afterwards, now, the second driven gear (28) on secondary balance shaft (25) with
The centre-to-centre spacing of drive gear (26) on bent axle (23) is maximum；
Step 3: the fixed disk of crank shaft gear is fixed on into crankshaft end, crank rotation angle control device is adjusted
Pointer and crankshaft center line be located on same vertical plane, and pointer fixed seat is fixed on the box top of engine, rotates bent
Axle, makes the zero line of the dial upper angle groove of crank shaft gear be alignd with pointer；By balance shaft timing positioner
Connector is sleeved on secondary balance shaft (25) end, tightens lock-screw, the support base of balance shaft gap measuring apparatus is fixed
In the box top of engine；
Step 4: turning crankshaft tumbler, bent axle is rotated in the clockwise direction 10 °, rotational lantern ring make baseline rod vertical to
On, then locking nut is tightened, the measurement end of amesdial and the reference plane perpendicular contact of baseline rod are adjusted, and will be shown on amesdial
Numerical value reset, then carry out rotatable dynamic balance axle timing positioner, make the second driven gear on secondary balance shaft (25)
(28) between cog rotation is being produced with the engagement place of the drive gear (26) on bent axle (23), is reading and record what is shown on amesdial
The difference of greatest measure and minimum value；
Step 5: turning crankshaft tumbler, make bent axle turn to successively along clockwise direction 30 °, 100 °, 190 °, 210 °,
280 ° of positions, repeat step four；
Step 6: the average value of above-mentioned six groups of differences is calculated, the mesh equation according to parallel axes roller gear：
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Calculate the operating center distance a of drive gear and the second driven gearwWith its difference without sideshake centre-to-centre spacing a, according to the difference
The thickness of pad (29) needed for determining pad between the bottom surface of balance shaft fixation cover and engine housing by form 1；
Wherein, jwtIt is pressure angle, α for backlash, αwtFor open top container ship angle, awIt is no sideshake center for operating center distance, a
It is that modification coefficient, m are that modulus, z are the number of teeth, z away from, x1For the number of teeth of drive gear, z2For the number of teeth of the second driven gear；
Form 1
Step 7: the process gasket in step one to be replaced by the pad that thickness is calculated in step 5.
2. driven gear of engine balance shaft and bent axle drive gear Mesh Clearance Adjustment method according to claim 1, its
It is characterised by：The support base (8) is L-shaped, is constituted by transverse slat and with the riser that transverse slat is connected vertically, is offered on riser solid
Determine frame mounting hole (10)；The fixed mount is L-shaped, is constituted by stock and with stock quarter butt connected vertically, the stock of fixed mount
In fixed mount mounting hole, the top surface of riser is connected with lock-screw (9) and the stock of fixed mount is fixed on into support base riser
Upper end；The quarter butt end of fixed mount offers dop (12), and a lateral strut (13) is fixed in dop, and the amesdial is installed
In lateral strut end.
3. driven gear of engine balance shaft and bent axle drive gear Mesh Clearance Adjustment method according to claim 1, its
It is characterised by：Handle fixed base (4) is provided with the crank shaft gear, the handle fixed base and the fixed disk, which are located at, to be carved
Scale both sides, three is fixed together with bolt, and handle (3) is provided with Handle mount two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528797.6A CN107218380B (en) | 2017-07-01 | 2017-07-01 | Driven gear of engine balance shaft and crankshaft drive gear Mesh Clearance Adjustment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528797.6A CN107218380B (en) | 2017-07-01 | 2017-07-01 | Driven gear of engine balance shaft and crankshaft drive gear Mesh Clearance Adjustment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107218380A true CN107218380A (en) | 2017-09-29 |
| CN107218380B CN107218380B (en) | 2019-06-04 |
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|---|---|---|---|
| CN201710528797.6A Active CN107218380B (en) | 2017-07-01 | 2017-07-01 | Driven gear of engine balance shaft and crankshaft drive gear Mesh Clearance Adjustment method |
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| CN (1) | CN107218380B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112032260A (en) * | 2020-08-24 | 2020-12-04 | 郑州机械研究所有限公司 | Method for assembling and phase adjusting equidirectional output structure |
| CN112815080A (en) * | 2021-01-04 | 2021-05-18 | 东风汽车股份有限公司 | Gear clearance control method |
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|---|---|---|---|---|
| CN112032260A (en) * | 2020-08-24 | 2020-12-04 | 郑州机械研究所有限公司 | Method for assembling and phase adjusting equidirectional output structure |
| CN112815080A (en) * | 2021-01-04 | 2021-05-18 | 东风汽车股份有限公司 | Gear clearance control method |
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| CN107218380B (en) | 2019-06-04 |
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