CN104889502B - Large-scale gear grinding machines grinding carriage slewing equipment and its revolving-control method - Google Patents
Large-scale gear grinding machines grinding carriage slewing equipment and its revolving-control method Download PDFInfo
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- CN104889502B CN104889502B CN201510243991.0A CN201510243991A CN104889502B CN 104889502 B CN104889502 B CN 104889502B CN 201510243991 A CN201510243991 A CN 201510243991A CN 104889502 B CN104889502 B CN 104889502B
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Abstract
The present invention provides a kind of large-scale gear grinding machines grinding carriage slewing equipment and its revolving-control method, including rotating cylinder, revolving bed, main shaft, double helical pitch anti-backlash worm wheel pairs, Circular gratings, grinding carriage, clamp system and unloading mechanism.Main shaft and the revolving bed firm fixation of bolt, by one group of roller bearings on main shaft, grinding carriage is joined directly together rotating cylinder with rotating cylinder, driven by the way that double helical pitch anti-backlash worm wheels are secondary, revolution is realized, rotation position can be locked on revolving bed by Circular gratings control by clamp system.The present invention can meet large-scale gear grinding machines grinding carriage high rigidity support, steady flexible motion and pinpoint requirement.
Description
Technical field
The invention belongs to digit ctrol machine tool field, and in particular to a kind of large-scale gear grinding machines grinding carriage slewing equipment and its revolution control
Method processed.
Background technology
Grinding spindle, trimming device and other annexes are installed, load is asymmetric on gear grinding machines grinding carriage, in weighting shape
State.During grinding helical gear, grinding carriage needs to turn round certain angle, wheel grinding incision direction is adapted with teeth groove helical angle,
The asymmetric of load is so more exacerbated, when being especially ground large gear, because module is big, tooth depth is big, shaping sand used
Wheel diameter is up to 500 millimeters, and 130 millimeters of thickness, grinding load is big.Overcome load torque and grinding moment of torsion that weighting causes, need
Wanting grinding carriage supporting mechanism has rigidity very high, just can guarantee that grinding accuracy stability.In addition, in the accurate mill of large gear
, it is necessary to wheel grinding cut-in angle makees micro accurate adjustment during cutting, this needs the grinding carriage slew gear to have high sensitivity
And accurate position control accuracy.
Existing gear grinding machines grinding carriage slewing equipment, or using the first scheme：Servomotor direct connection decelerator drives master
Axle drives grinding carriage revolution；Using second scheme：Torque motor directly drives.
In the first scheme, servomotor needs to bear very big load inertia, and due to structure limitation, drives sand
The major axis diameter of wheel carrier revolution is smaller, and grinding carriage tactical diameter is the several times of major axis diameter, in grinding carriage turning course is dragged,
Base bearing receives very big torsional load, often the phenomenon that grinding carriage is shaken in turning course occurs in production practices.
In second scheme, directly driven using torque motor, turntable bearings.Torque motor is defeated in inactive state
Go out moment of torsion dramatic decrease, in grinding process, grinding carriage is static, support performance reduction of the torque motor to grinding carriage.In addition, returning
Swivel base overhanging is more long, and table top bearing is arranged on revolving bed front end, and the load on grinding carriage is directly made by table shaft and is used in back
Swivel base front end, and revolving bed support is located at rear end, so that revolving bed bears larger bending moment of torsion, influences grinding accuracy.
For large-scale gear grinding machines, grinding carriage load is big, is turned round by a turntable bearings, it is difficult to which meeting high rigidity will
Ask.Circular gratings are arranged on revolution base rear end by a jackshaft, and distance controlling target is remote, due to alignment error, and centre
The beat of axle, precision is poor, it is difficult to realize high accuracy, high sensitivity control.
The content of the invention
It is an object of the invention to provide a kind of large-scale gear grinding machines grinding carriage slewing equipment and its revolving-control method.
To reach above-mentioned purpose, present invention employs following technical scheme：
A kind of large-scale gear grinding machines grinding carriage slewing equipment, the grinding carriage slewing equipment includes rotating cylinder, revolving bed, main shaft, sand
Wheel carrier, several clamp systems for positioning grinding carriage angle of revolution and for being turned round in grinding carriage in by revolving bed before
Several unloading mechanisms of the outside pushing tow grinding carriage in end face bottom, the main shaft is fixed on revolving bed, and rotating cylinder passes through one group high
On main shaft, the rear end face of grinding carriage is connected rigid bearing support with rotating cylinder, the front end face of revolving bed and the rear end face of grinding carriage
It is relative and constitute rail plate pair.
The grinding carriage slewing equipment also includes double helical pitch anti-backlash worm wheel pairs, and servomotor passes through double helical pitch anti-backlash worm wheel pairs
Drive rotating cylinder revolution.
The servomotor is band-type brake motor, and described pair of helical pitch anti-backlash worm wheel pair is mounted remotely from grinding carriage center of gravity side.
The grinding carriage slewing equipment also includes being arranged on the round light for controlling grinding carriage rotation position of front-end of spindle
Grid.
One group of high rigidity shaft contracts the taper roll bearing and Biserial cylindrical roller bearing for including and being arranged on main shaft,
Taper roll bearing is arranged on the rear end of main shaft, Biserial cylindrical roller bearing be arranged on taper roll bearing and the Circular gratings it
Between, rotating cylinder is supported on main shaft by the bearing group that Biserial cylindrical roller bearing and taper roll bearing are constituted.
The revolving bed is double-deck gusset tubular structure, and the front end face of revolving bed offers radial groove, and the groove will
The front end face even partition of revolving bed is many parts, in the front end face corresponding region of clamp system arrangement revolving bed after singulation,
Compressed air discharge conduit is provided with the groove.
The clamp system include be arranged in the front end of revolving bed clamping cylinder, be arranged at it is mutual in clamping cylinder
The clamp system piston and disc spring of cooperation, and the clamping pull bar being connected with clamp system piston, open on the rear end face of grinding carriage
Ring-type T-slot is provided with, the clamping pull bar front end is arc-shaped T-type structure, clamps pull bar and is stretched out by the front end face of revolving bed, is pressed from both sides
Strain at bar front end insertion ring-type T-slot in and with ring-type T-slot formed gap coordinate.
The unloading mechanism includes that the body shell for being arranged on revolving bed front end inner bottom part, the unloading mechanism being arranged in body shell are lived
Plug, and the push rod being connected with unloading mechanism piston, the front end of push rod are provided with and relative with the rear end face of grinding carriage can roll
Off-load rolling bearing, off-load rolling bearing stretches out or withdrawn by the front end face of revolving bed, and the front end in body shell is provided with piston
Limited step, the rear end in body shell is provided with the piston alignment pin coordinated with push rod rear end, is arranged at by the disc spring of pretension and unloaded
Between lotus mechanism piston and off-load rolling bearing.
The revolving-control method of above-mentioned large-scale gear grinding machines grinding carriage slewing equipment, comprises the following steps：
1) grinding carriage is positioned and is clamped on revolving bed along predetermined angular position using the clamp system；
2) when needing to rotate grinding carriage again, the clamp system stops clamping grinding carriage, then before revolving bed
End face discharges compressed air, meanwhile, then the outside pushing tow grinding carriage of unloading mechanism drives rotating cylinder to drive grinding carriage to rotate,
After grinding carriage turns to new predetermined angular position, unloading mechanism is set to stop pushing tow grinding carriage, meanwhile, stop at revolving bed
Front end face discharges compressed air, then according to step 1) grinding carriage is positioned and clamped.
Beneficial effects of the present invention are embodied in：
Grinding carriage in the present invention can improve grinding carriage rigidity of support directly by main shaft support, lifting speed of gyration and
Rotating accuracy, main shaft and revolving bed are rigidly connected in the present invention, and grinding carriage load can be close to rigid of transmission to revolution base rear end
Revolving bed supports position, realizes the rigid of transmission of power, it is to avoid the torsional deformation of revolving bed, and main shaft is fixed in the present invention, rotating cylinder
Rotate, the driving arm of force of maximum can be realized in limited space, unloading mechanism is by grinding carriage rear end face guide rail in the present invention
Bottom ejects slightly, makes grinding carriage rear end guide pass pressure distribution uniform, in combination with the pneumatic off-load of compressed air, makes grinding carriage
Revolution is steady, smooth, thus, the present invention can meet large-scale gear grinding machines grinding carriage high rigidity and support, steady flexible motion, and
Pinpoint requirement.
Further, Circular gratings are arranged on front-end of spindle in the present invention, and positioned at grinding carriage guide pass, Abbe error is small, can
To obtain control accuracy higher.
Further, in the present invention, revolving bed end face guide rail is divided into several pieces, and the clamp system arrangement is after singulation
Revolving bed front end face corresponding region in, clamp when clamp pull bar can obtain higher with ring-type T-slot surrounding faying face
Contact strength, improve clamping effect, it is to avoid when being clamped using integrated guide rail face, clamping force is uneven and part's machining errors
The rotating accuracy for causing loses problem.
Further, tie rod end is clamped in the present invention and uses arc-shaped T-type structure, during tension, contact area ratio
General T type structure is twice, and can improve clamping force.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is clamp system of the present invention and unloading mechanism distribution schematic diagram；
Fig. 3 is the structural representation of unloading mechanism of the present invention；
Fig. 4 is the structural representation of clamp system of the present invention；
Fig. 5 is the structural representation of the arc-shaped T-type structure of clamping pull bar of the present invention；
Fig. 6 is the structural representation of revolving bed of the present invention；
Fig. 7 is the structural representation of grinding carriage of the present invention；
In figure：Rotating cylinder 1, revolving bed 2, main shaft 3, double helical pitch anti-backlash worm wheel pairs 4, Circular gratings 5, grinding carriage 6, clamp pull bar 7,
Clamp system 8, unloading mechanism 9, piston alignment pin 10, body shell 11, unloading mechanism piston 12, push rod 13, disc spring 14, off-load are rolled
Bearing 15, disc spring 16, clamp system piston 17, clamping cylinder 18, ring-type T-slot 19, groove 20, unloading mechanism telescopic hole 21,
Clamp system telescopic hole 22, Biserial cylindrical roller bearing 23, taper roll bearing 24, arc-shaped T-type structure 25.
Specific embodiment
The present invention is elaborated with reference to the accompanying drawings and examples.
Referring to Fig. 1~Fig. 7, large-scale gear grinding machines grinding carriage slewing equipment of the present invention includes rotating cylinder 1, revolving bed 2, main shaft
3rd, grinding carriage 6, Circular gratings 5, double helical pitch anti-backlash worm wheel pairs 4, for position several clamp systems 8 of grinding carriage angle of revolution with
And for being turned round in grinding carriage in by revolving bed the outside pushing tow grinding carriage in front end face bottom several unloading mechanisms 9, it is described
Main shaft 3 is fixed on revolving bed 2, and the Circular gratings 5 are arranged on the front end of main shaft 3, and grinding carriage rotation position is by Circular gratings control, circle
Grating 5 reduces Abbe error near grinding carriage 6, and true and reliable feedback grinding carriage physical location improves control accuracy.
Taper roll bearing 24 and Biserial cylindrical roller bearing 23 are provided with main shaft 3, taper roll bearing 24 is arranged on main shaft 3
Rear end, Biserial cylindrical roller bearing 23 is arranged between taper roll bearing 24 and the Circular gratings 5, and rotating cylinder 1 is justified by biserial
Post roller bearing 23 is supported on main shaft 3 with the bearing group of the composition of taper roll bearing 24.The rear end face of grinding carriage 6 and rotating cylinder 1
It is connected, the front end face of revolving bed 2 is relative with the rear end face of grinding carriage 6, constitutes rail plate pair.Servomotor is disappeared by double helical pitches
Gap worm gear drives rotating cylinder, realizes that grinding carriage is turned round.The servomotor is band-type brake motor, can be turned back to target position in grinding carriage
Pinning worm screw is postponed, rigidity is further improved；According to force analysis, the described pair of secondary worm screw of helical pitch anti-backlash worm wheel is mounted remotely from
Grinding carriage center of gravity side, makes load torque be applied to the power on worm screw for axial compressive force, improves stability.
The revolving bed 2 is double-deck gusset cylinder-like structure, and the front end face of revolving bed 2 radially offers groove
20, the front end face even partition of revolving bed is many parts by groove 20, and segmentation number is equal with the clamp system quantity, i.e., described
Clamp system 8 arranges in the front end face corresponding region of revolving bed after singulation that being provided with compressed air in the groove 20 releases
Put pipeline.The clamp system 8 is hydraulic clamp, disc spring is loosened, including is arranged at the clamping cylinder in the front end of revolving bed 2
The clamp system piston 17 and disc spring 16 of the mutual cooperation the 18, being arranged in clamping cylinder, and be connected with clamp system piston
Clamping pull bar 7, offer ring-type T-slot 19 on the rear end face of grinding carriage 6, clamping pull bar 7 front end is arc-shaped T junction
Structure 25, clamps pull bar 7 and is stretched out by the front end face of revolving bed 2, clamp pull bar 7 front end insert in the ring-type T-slot 19 and with
Ring-type T-slot forms gap and coordinates, and grinding carriage can be locked on revolving bed by clamp system.The unloading mechanism 9 includes setting
Put body shell 11, the unloading mechanism piston 12 that is arranged in body shell in revolving bed front end inner bottom part, and with unloading mechanism piston
Connected push rod 13, the front end of push rod 13 be provided with can rolling relative with the rear end face of grinding carriage 6 off-load rolling bearing 15,
Off-load rolling bearing 15 is stretched out or is withdrawn by the front end face of revolving bed 2, and the front end in body shell 11 is provided with piston limit step, body
Rear end in shell 11 is provided with the piston alignment pin 10 coordinated with push rod rear end, and unloading mechanism is arranged at by the disc spring 14 of pretension
Between piston 12 and off-load rolling bearing 15.
The revolving-control method of above-mentioned large-scale gear grinding machines grinding carriage slewing equipment, comprises the following steps：
1) grinding carriage 6 is positioned and is clamped on revolving bed 2 along predetermined angular position using the clamp system 8；
2) when needing to rotate grinding carriage 6 again, the clamp system 8 stops clamping grinding carriage 6, then in revolving bed 2
Front end face release compressed air, meanwhile, the outside pushing tow grinding carriage 6 of the unloading mechanism 9, then drive rotating cylinder 1 drive emery wheel
Frame 6 is rotated, and after grinding carriage 6 turns to new predetermined angular position, unloading mechanism 9 is stopped pushing tow grinding carriage 6, meanwhile, stop
Only the front end face in revolving bed 2 discharges compressed air, then according to step 1) grinding carriage 6 is positioned and clamped.
Specifically, when grinding carriage 6 needs to rotate, oil pressure sheds in the clamping cylinder 18 of the clamp system 8, clamps and draws
Bar 7 is moved and protruding with clamp system piston 17, loosens the front end of clamping pull bar 7, unloading mechanism piston in unloading mechanism 9
12 move under oil pressure effect and drive push rod 13 to eject, and overcome because grinding carriage center of gravity is forward, in grinding carriage circular guideway face
The pressure that lower half is formed, makes grinding carriage circular guideway surface pressure be evenly distributed, and compressed air sprays from groove 20, in emery wheel
Air cushion is formed between frame circular guideway face and revolving bed guide pass (i.e. revolving bed front end face), after the completion of preparation, servo electricity
Machine drives double helical pitch anti-backlash worm wheels secondary 4 to drive grinding carriage 6 steadily to turn round, and the off-load rolling bearing 15 of the end of push rod 13 is close to emery wheel
Frame rear end guide pass is rolled, and ensures that whole grinding carriage circular guideway surface pressure is evenly distributed in grinding carriage turning course, emery wheel
Frame 6 is turned to up to after target location, and compressed air sheds, and the pressure oil of unloading mechanism 9 sheds, and pressure oil is passed through in clamp system 8,
Clamp pull bar 7 to act, grinding carriage 6 is locked on revolving bed 2, push rod 13 withdraws.
Embodiment
As shown in figure 1, a kind of large-scale gear grinding machines grinding carriage slewing equipment, including rotating cylinder 1, revolving bed 2, main shaft 3, double lead
Journey anti-backlash worm wheel pair 4, Circular gratings 5, grinding carriage 6, clamp system 8 and unloading mechanism 9.Main shaft 3 is fastened with revolving bed 2 with bolt
It is connected (being rigidly connected).Rotating cylinder 1 is supported on main shaft 3 by Biserial cylindrical roller bearing 23 and taper roll bearing 24, emery wheel
Frame 6 is joined directly together with rotating cylinder 1, and rotating cylinder 1 passes through double helical pitch anti-backlash worm wheels secondary 4 and drives, and realizes that grinding carriage is turned round, and rotation position is by justifying
Grating 5 is controlled, and can be locked on revolving bed 2 by the way that clamp system 8 is firm.Grinding carriage 6 is directly supported with main shaft 3, and rigidity is high；
Main shaft is fixed, and bearing outer ring is rotated, and the driving arm of force of maximum can be realized in limited space；Before Circular gratings are arranged on main shaft
End, near grinding carriage guide pass, Abbe error is small, can obtain control accuracy higher.
As shown in figure 1, main shaft 3 and revolving bed 2 are rigidly connected by screw.So load of grinding carriage 6 can be with rigid of transmission
To revolution base rear end, position is supported near revolving bed, realize the rigid of transmission of power, it is to avoid the torsional deformation of revolving bed.
When grinding carriage needs to rotate, oil pressure sheds in clamp system 8, clamps pull bar 7 and loosens, push rod 13 in unloading mechanism 9
Ejection, grinding carriage circular guideway surface pressure is evenly distributed, and compressed air sprays from the groove of the guide pass of revolving bed 2, in revolution
Air cushion is formed between guide pass, after the completion of preparation, servomotor drives double helical pitch anti-backlash worm wheels secondary 4 to drive grinding carriage steady
Revolution, after reaching target location, compressed air sheds, and the pressure oil of unloading mechanism 9 sheds, and clamp system 8 is passed through pressure oil, clamps
Pull bar 7 is acted, and grinding carriage is locked on revolving bed 2.
As shown in Figure 2 and Figure 3, grinding carriage revolution load unloading mechanism 9, off-load are symmetrically installed with the front bottom end of revolving bed 2
Mechanism 9 includes piston alignment pin 10, body shell 11, unloading mechanism piston 12, push rod 13, disc spring 14 and off-load rolling bearing 15.
After clamp system 8 loosens, pressure oil is passed through in body shell 11, unloading mechanism piston 12 moves to the limited step inside body shell,
Now disc spring 14 is compressed, and push rod 13 is ejected, and the off-load rolling bearing 15 of the end of push rod 13 is rolled close to grinding carriage rear end guide pass,
Grinding carriage lower end laminating guide pass and revolving bed guide pass are disengaged, whole grinding carriage circular guideway surface pressure is evenly distributed,
Ensure that grinding carriage revolution is steady smooth.
Grinding carriage is overall into overhanging state, causes guide rail binding face lower half section load between revolving bed and grinding carriage big, such as
Fruit clamps grinding carriage after pull bar unclamps and begins to revolution, and because pressure is big between guide pass, skewness easily produces shake,
The occlusion of circular guideway face, plucking can be caused.After increasing unloading mechanism, after clamping pull bar loosens, unloading mechanism is micro- by grinding carriage
Micro- ejection, makes whole circular guideway surface pressure be evenly distributed, then is passed through compressed air, and grinding carriage just can be operated flexibly.
As shown in figure 4, clamp system 8 is hydraulic clamp, disc spring is loosened.During clamping, hydraulic oil is passed through in clamping cylinder 18,
Clamp system piston 17 drives clamping pull bar 7 to move realization backward and clamps, and is relaxing exercise deposit energy while compressing disc spring 16
Amount.Using hydraulic clamp, clamping force is constant without fluctuation, and dynamics is adjustable, overcomes elasticity of the disc spring clamping force in the case where exciting is ground
Deformation.
As shown in figure 5, it is arc-shaped T-type structure to clamp the end of pull bar 7, the pull bar than ordinary rectangular T-slot structure is clamped
Area increasing is twice, and clamps more reliable.
As shown in fig. 6, the revolving bed 2 is double-deck gusset cylinder-like structure, its end face is radially provided with groove, will
Guide pass even partition is many parts, and dividing number is equal with the quantity of clamp system 8, and has compressed air line in groove.
Double-deck gusset cylinder-like structure torsional rigidity is high, in the case of heavy load grinding, can effectively support grinding carriage,
Improve system rigidity；End face is divided into many parts, and pull bar surrounding faying face obtains contact strength higher when alloing clamping, improves
Clamping effect, it is to avoid when entirety is stepped up, the rotating accuracy that clamping force is uneven and part's machining errors are caused loses problem.Ditch
Compressed air line is processed in groove, grinding carriage is passed through compressed air when turning round, form air cushion, it is ensured that grinding carriage steadily turns round nothing and climbs
OK, revolution sensitivity is improve, and can prevents foreign matter from entering guide pass.
As shown in fig. 7, the rear end face of grinding carriage 6 is provided with ring-type T-slot, the arc-shaped T-type structure insertion of the end of pull bar 7 is clamped
Gap is formed in ring-type T-slot to coordinate.
Clamp system 8 is circular distribution on revolving bed.
Claims (9)
1. a kind of large-scale gear grinding machines grinding carriage slewing equipment, it is characterised in that：The grinding carriage slewing equipment includes rotating cylinder (1), returns
Swivel base (2), main shaft (3), grinding carriage (6), several clamp systems (8) for positioning grinding carriage angle of revolution and for
Grinding carriage revolution in by revolving bed the outside pushing tow grinding carriage in front end face bottom several unloading mechanisms (9), the main shaft (3)
It is fixed on revolving bed (2), rotating cylinder (1) is supported on main shaft (3) by one group of high rigidity bearing, the rear end face of grinding carriage (6)
It is connected with rotating cylinder (1), the front end face of revolving bed (2) is relative with the rear end face of grinding carriage (6) and constitutes rail plate pair.
2. a kind of large-scale gear grinding machines grinding carriage slewing equipment according to claim 1, it is characterised in that：The grinding carriage revolution
Device also includes double helical pitches anti-backlash worm wheel pair (4), and servomotor drives rotating cylinder to turn round by the way that double helical pitch anti-backlash worm wheels are secondary.
3. a kind of large-scale gear grinding machines grinding carriage slewing equipment according to claim 2, it is characterised in that：The servomotor is
Band-type brake motor, described pair of helical pitch anti-backlash worm wheel pair (4) is mounted remotely from grinding carriage (6) center of gravity side.
4. a kind of large-scale gear grinding machines grinding carriage slewing equipment according to claim 1, it is characterised in that：The grinding carriage revolution
Device also includes being arranged on the Circular gratings (5) for controlling grinding carriage rotation position of main shaft (3) front end.
5. a kind of large-scale gear grinding machines grinding carriage slewing equipment according to claim 4, it is characterised in that：One group of high rigidity
Bearing includes the taper roll bearing (24) and Biserial cylindrical roller bearing (23) that are arranged on main shaft (3), taper roller axle
The rear end that (24) are arranged on main shaft (3) is held, Biserial cylindrical roller bearing (23) is arranged on taper roll bearing (24) and the circle
Between grating (5), rotating cylinder (1) is supported by the bearing group that Biserial cylindrical roller bearing (23) and taper roll bearing (24) are constituted
On main shaft (3).
6. a kind of large-scale gear grinding machines grinding carriage slewing equipment according to claim 1, it is characterised in that：The revolving bed (2)
It is double-deck gusset tubular structure, the front end face of revolving bed (2) offers radial groove (20), the groove (20) is by revolving bed
Front end face even partition is many parts, in the front end face corresponding region of clamp system (8) arrangement revolving bed after singulation, the ditch
Groove is provided with compressed air discharge conduit in (20).
7. a kind of large-scale gear grinding machines grinding carriage slewing equipment according to claim 1, it is characterised in that：The clamp system
(8) clamping machine including the clamping cylinder (18) being arranged in the front end of revolving bed, the mutual cooperation being arranged in clamping cylinder
Structure piston (17) and disc spring (16), and the clamping pull bar (7) being connected with clamp system piston, on the rear end face of grinding carriage (6)
Ring-type T-slot (19) is offered, the clamping pull bar front end is arc-shaped T-type structure (25), clamps pull bar (7) by revolving bed
Front end face stretches out, and in front end insertion ring-type T-slot (19) of clamping pull bar (7) and forms gap with ring-type T-slot and coordinates.
8. a kind of large-scale gear grinding machines grinding carriage slewing equipment according to claim 1, it is characterised in that：The unloading mechanism
(9) including the body shell (11) for being arranged on revolving bed front end inner bottom part, the unloading mechanism piston (12) that is arranged in body shell, Yi Jiyu
The connected push rod (13) of unloading mechanism piston, the front end of push rod (13) is provided with can rolling relative with the rear end face of grinding carriage (6)
Dynamic off-load rolling bearing (15), off-load rolling bearing (15) is stretched out or is withdrawn by the front end face of revolving bed, in body shell (11)
Front end is provided with piston limit step, and the rear end in body shell (11) is provided with the piston alignment pin (10) coordinated with push rod rear end,
It is arranged between unloading mechanism piston (12) and off-load rolling bearing (15) by the disc spring (14) of pretension.
9. it is a kind of as claimed in claim 1 large-scale gear grinding machines grinding carriage slewing equipment revolving-control method, it is characterised in that：Bag
Include following steps：
1) grinding carriage (6) is positioned and is clamped on revolving bed (2) along predetermined angular position using the clamp system (8)；
2) when needing to rotate again grinding carriage (6), the clamp system (8) stops clamping grinding carriage (6), then in revolving bed
(2) front end face release compressed air, meanwhile, outside pushing tow grinding carriage (6) of the unloading mechanism (9) then drives rotating cylinder (1)
Drive grinding carriage (6) to rotate, after grinding carriage (6) turns to new predetermined angular position, unloading mechanism (9) is stopped pushing tow sand
Wheel carrier (6), meanwhile, the front end face release compressed air of revolving bed (2) is stopped at, then according to step 1) grinding carriage (6) is entered
Row positioning is simultaneously clamped.
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| CN201510243991.0A CN104889502B (en) | 2015-05-13 | 2015-05-13 | Large-scale gear grinding machines grinding carriage slewing equipment and its revolving-control method |
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| CN104889502B true CN104889502B (en) | 2017-07-07 |
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| CN109352527B (en) * | 2018-11-21 | 2020-12-29 | 上海机床厂有限公司 | High-precision grinding wheel frame turret with locking device |
| CN112828611B (en) * | 2021-01-04 | 2022-03-04 | 南通永锠数控机械科技有限公司 | Automatic rotation mechanism-based automatic rotation method for milling power head |
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| CN104889502A (en) | 2015-09-09 |
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