CN112943912B - Double-speed-change full-chain anti-backlash servo driving device - Google Patents
Double-speed-change full-chain anti-backlash servo driving device Download PDFInfo
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- CN112943912B CN112943912B CN202110453323.6A CN202110453323A CN112943912B CN 112943912 B CN112943912 B CN 112943912B CN 202110453323 A CN202110453323 A CN 202110453323A CN 112943912 B CN112943912 B CN 112943912B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 41
- 210000004907 gland Anatomy 0.000 claims description 18
- 230000009977 dual effect Effects 0.000 claims description 9
- 238000005056 compaction Methods 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 4
- 238000003379 elimination reaction Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 9
- 238000003754 machining Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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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- 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
- F16H2057/121—Arrangements for adjusting or for taking-up backlash not provided for elsewhere using parallel torque paths and means to twist the two path against each other
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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
- F16H2057/126—Self-adjusting during operation, e.g. by a spring
- F16H2057/127—Self-adjusting during operation, e.g. by a spring using springs
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Abstract
The invention discloses a double-speed-change full-chain gap-eliminating servo driving device which comprises a servo motor and a gap-eliminating speed changer, wherein the gap-eliminating speed changer comprises a speed changer box body, an input gear shaft, a gear shaft and a gap-eliminating rotating shaft, an input bevel gear is arranged on the input gear shaft, a bevel gear is arranged on the gear shaft, the gap-eliminating rotating shaft is vertically and slidably provided with a sliding sleeve through a shaft key, the outer wall of the sliding sleeve is fixedly provided with the gap-eliminating bevel gear through an expanding sleeve component, the lower end of the gap-eliminating rotating shaft is sheathed with a pre-pressing nut through a thread, the upper end surface of the pre-pressing nut is provided with a spring lower supporting seat, the spring lower supporting seat is sheathed on the gap-eliminating rotating shaft, a plurality of spring grooves are distributed on the lower end surface of the sliding sleeve, and gap-eliminating springs are arranged in the spring grooves. The invention has reasonable structural design, higher precision, better stability and more compact structure, can meet the use of most high-precision transmission occasions, has lower overall manufacturing cost and is convenient for later maintenance.
Description
Technical Field
The invention relates to the technical field of machine tool transmission, in particular to a double-speed-change full-chain anti-backlash servo driving device.
Background
At present, three main driving modes of machine tool swinging head in machining are: 1. the torque motor is adopted to directly drive, so that the torque motor has the advantages of no gap, high rotating speed, high precision and the like of the whole transmission chain, but the service life is relatively short, the torque motor is easy to damage, and the torque motor can report waste once damaged, so that the torque motor basically cannot be subjected to later maintenance and repair; 2. the worm and gear is adopted for transmission, and the torque is large, the rotating speed is low, and because the worm and gear transmission is carried out through sliding friction, the worm and gear transmission has transmission gaps, shake can be easily generated when the gaps exist, and the precision and the smoothness of products in subsequent processing are easily reduced; 3. the gap eliminating gear mechanism is adopted for transmission, the transmission torque of the gap eliminating gear mechanism is positioned between the two transmissions, and the rotating speed of the gap eliminating gear mechanism is also positioned between the two transmissions, so that the gap eliminating gear mechanism can meet the requirement of machine tool swinging head use in most occasions.
Most of the driving devices of the existing anti-backlash gear mechanisms are that a servo motor passes through a speed reducer firstly, then the driving is divided into two parts through the anti-backlash mechanism to perform anti-backlash treatment, and the anti-backlash treatment cannot be performed inside the speed reducer in the anti-backlash mode; in addition, after the servo motor is decelerated by the speed reducer, the output torque is increased, so that the size of a transmission gear in the subsequent anti-backlash mechanism is correspondingly increased, and the space volume of the anti-backlash mechanism is larger; and the structural design of the existing anti-backlash gear mechanism has certain defects, and the accuracy which is comparable with that of a torque motor is difficult to achieve. The application provides a double-speed-change full-chain anti-backlash servo driving device for solving the problems.
Disclosure of Invention
The invention aims to provide a double-speed-change full-chain anti-backlash servo driving device so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a two variable speed full-chain anti-backlash servo drive device, includes servo motor and anti-backlash derailleur, anti-backlash derailleur includes the derailleur box, rotates the input tooth axle of installing in the derailleur box, tooth axle and anti-backlash pivot, the input of input tooth axle is connected with servo motor drive, is provided with the input helical gear on the input tooth axle, be provided with the helical gear that is used for with the meshing of input helical gear on the tooth axle, anti-backlash pivot has the sliding sleeve through the vertical slidable mounting of axial key, and the outer wall of sliding sleeve has anti-backlash helical gear through expanding tight cover subassembly fixed mounting, and anti-backlash pivot lower extreme is equipped with the pre-compaction nut through the thread bush, and the pre-compaction nut up end is provided with the spring lower carriage, and the spring lower carriage cover is installed in anti-backlash pivot, a plurality of spring grooves have been seted up to the lower terminal surface distribution of sliding sleeve, are provided with anti-backlash spring in the spring groove, and the one end of anti-backlash spring is contradicted with the inside roof of spring groove and is connected, and the other end of anti-backlash spring is contradicted with the spring lower carriage.
As a further scheme of the invention, the bottom end of the anti-backlash rotating shaft extends out of the gearbox body and is in driving connection with the input end of the left speed reducer, and the output end of the left speed reducer is provided with a left output gear;
The bottom end of the gear shaft extends out of the gearbox body and is in driving connection with the input end of the right speed reducer, and the output end of the right speed reducer is provided with a right output gear;
the left output gear and the right output gear are both meshed with the tail end driving large gear.
As a further scheme of the invention, the expansion sleeve assembly comprises an expansion sleeve gland, a first expansion sleeve, a second expansion sleeve and expansion sleeve connecting bolts, wherein the inner ring of the gap eliminating helical gear is sleeved on the sliding sleeve, the upper end of the inner ring of the gap eliminating helical gear is provided with a gear step groove, the first expansion sleeve is arranged in the gear step groove, the first expansion sleeve is provided with an inverted conical hole, the inverted conical surface at the lower end of the second expansion sleeve is attached to the inverted conical hole, the upper end surface of the second expansion sleeve is pressed with the expansion sleeve gland, a plurality of gland mounting holes are distributed on the periphery of the expansion sleeve gland, the expansion sleeve connecting bolts penetrate through the gland mounting holes, and the expansion sleeve connecting bolts are fixed in the gear end surface screw holes of the upper end surface of the gap eliminating helical gear through screw threads.
As a further scheme of the invention, the output end of the servo motor is in driving connection with the input end of the input gear shaft through a coupler.
As a further scheme of the invention, an upper box cover is fixedly arranged at an opening at the upper end of the transmission box body, an upper output shaft mounting hole is formed in the upper box cover corresponding to the gear shaft and the anti-backlash rotating shaft, an output bearing seat is fixedly arranged in the upper output shaft mounting hole, and the top ends of the gear shaft and the anti-backlash rotating shaft are in rotary fit connection with the corresponding output shaft bearing seat through the output shaft bearing;
The lower end face of the transmission box body is provided with lower output shaft mounting holes corresponding to the gear shaft and the gap eliminating rotating shaft, and the bottoms of the gear shaft and the gap eliminating rotating shaft are in running fit connection with the corresponding lower output shaft mounting holes through output shaft bearings.
As a further scheme of the invention, the top ends of the gear shaft and the anti-backlash rotating shaft are also fixed with a gland, and the lower end face of the gland is pressed against the upper end face of the uppermost output shaft bearing;
The outer side end face of the output shaft bearing seat is also fixed with a dustproof ring, and the dustproof ring is sleeved on the outer ring of the gland.
As a further scheme of the invention, a dustproof ring groove is formed in the inner ring of the dustproof ring, a dustproof ring is embedded in the dustproof ring groove, and the inner ring of the dustproof ring is attached to the circumferential outer ring of the gland.
As a further scheme of the invention, positioning circular grooves are formed in the lower end face of the transmission case body, corresponding to the gear shaft and the clearance eliminating rotating shaft, first central positioning rings are fixedly arranged in the positioning circular grooves, and the upper ends of the left speed reducer and the right speed reducer are sleeved on the corresponding first central positioning rings.
As a further scheme of the invention, an input shaft mounting hole is formed in the upper box cover corresponding to the input gear shaft, an upper input bearing seat is fixedly arranged in the input shaft mounting hole, and the upper end of the input gear shaft is in rotary fit connection with the upper input bearing seat through a bearing;
The upper end face of the upper input bearing seat is fixedly provided with a second center positioning ring, the lower end of the shell of the servo motor is fixedly arranged on the motor seat, and the lower end of the motor seat is sleeved on the second center positioning ring;
the inner wall of the transmission box body is fixedly provided with a lower input bearing seat, and the lower end of the input gear shaft is in rotary fit connection with the lower input bearing seat through a bearing.
Compared with the prior art, the invention has the beneficial effects that: because the right speed reducer 9 and the left speed reducer 14 are both positioned in the corresponding transmission closed loops to form a double-speed-change full-chain transmission structure, even if transmission gaps are formed inside the right speed reducer 9 and the left speed reducer 14, the transmission gaps can be effectively eliminated, so that the full-chain gap elimination from the servo motor 1 to the tail end driving large gear 11 is realized, the machining precision of the follow-up machine tool swinging head or milling head is greatly improved, the precision comparable with that of a torque motor can be achieved, the enough transmission torque can be ensured, and the machining use of the machine tool swinging head or milling head in most occasions can be met. The invention has reasonable structural design, higher precision, better stability and more compact structure, can meet the use of most high-precision transmission occasions, has lower overall manufacturing cost and is convenient for later maintenance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a dual-speed full-chain anti-backlash servo drive;
FIG. 2 is a schematic diagram of a dual speed full chain anti-backlash transmission in a dual speed full chain anti-backlash servo drive;
FIG. 3 is a schematic diagram of the assembly of an expansion sleeve assembly in a dual speed full chain anti-backlash servo drive;
fig. 4 is a schematic structural view of a dust-proof ring in a dual-speed full-chain anti-backlash servo drive device.
In the figure: the device comprises a servo motor, a 2-coupler, a 3-motor seat, a 4-gland, a 5-output bearing seat, a 6-upper box cover, a 7-gear shaft, an 8-transmission box body, a 9-right speed reducer, a 10-right output gear, a 11-end driving large gear, a 12-input gear shaft, a 13-second center positioning ring, a 14-left speed reducer, a 15-left output gear, a 16-sliding sleeve, a 17-expansion sleeve gland, a 18-first expansion sleeve, a 19-gap eliminating bevel gear, a 20-spring lower support seat, a 21-pre-compression nut, a 22-first center positioning ring, a 23-gap eliminating rotary shaft, a 24-dustproof ring, a 25-bevel gear, a 26-input bevel gear, a 27-second expansion sleeve, a 28-gap eliminating spring, a 29-expansion sleeve connecting bolt and a 30-dustproof ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a two variable speed full-chain anti-backlash servo drive device, includes servo motor 1 and anti-backlash derailleur, anti-backlash derailleur includes derailleur box 8, rotates the input tooth axle 12 of installing in derailleur box 8, tooth axle 7 and anti-backlash pivot 23, the input of input tooth axle 12 is connected with servo motor 1 drive, is provided with input helical gear 26 on the input tooth axle 12, be provided with on the tooth axle 7 be used for with the helical gear 25 of input helical gear 26 meshing, anti-backlash pivot 23 has sliding sleeve 16 through the vertical slidable mounting of axial key, and the outer wall of sliding sleeve 16 is through expanding tight sleeve subassembly fixed mounting to have also be used for with the anti-backlash helical gear 19 of input helical gear 26 meshing, and anti-backlash pivot 23 lower extreme is equipped with precompaction nut 21 through the screw sleeve, precompaction nut 21 up end is provided with spring lower supporting seat 20, and spring lower supporting seat 20 suit is on anti-backlash pivot 23, a plurality of spring grooves have been seted up to the lower terminal surface distribution of sliding sleeve 16, are provided with anti-backlash spring 28 in the spring groove, and the one end of anti-backlash spring 28 is connected with the inside the spring groove conflict of anti-backlash spring 28. The anti-backlash bevel gear 19 in the embodiment can vertically slide up and down along the axis of the anti-backlash rotary shaft 23 in the transmission process, so that the anti-backlash bevel gear 19 is in stable contact with the input bevel gear 26, and effective anti-backlash can be realized by matching with the meshing transmission between the bevel gear 26 and the input bevel gear 26.
The tensioning force of the gap eliminating spring 28 can be adjusted by rotating the position of the adjusting pre-pressing nut 21, so that the adjustment is convenient, the whole transmission chain can achieve basically gapless transmission, and the adjustment operation and the use are convenient.
The bottom end of the anti-backlash rotating shaft 23 extends out of the transmission case 8 and is in driving connection with the input end of the left speed reducer 14, and the output end of the left speed reducer 14 is provided with a left output gear 15;
the bottom end of the gear shaft 7 extends out of the transmission box body 8 and is in driving connection with the input end of the right speed reducer 9, and the output end of the right speed reducer 9 is provided with a right output gear 10;
the left output gear 15 and the right output gear 10 are both in meshed connection with the end driving large gear 11.
Working principle: when the servo motor 1 works specifically, power is transmitted to the input gear shaft 12, the input bevel gear 26 on the input gear shaft 12 divides the power into two parts, the two parts are respectively and simultaneously transmitted to the bevel gear 25 and the gap eliminating bevel gear 19, the bevel gear 25 transmits the power to the right speed reducer 9 through the gear shaft 7, and the right speed reducer 9 transmits the power to the tail end driving large gear 11 through the right output gear 10 to form a transmission closed loop;
The anti-backlash bevel gear 19 transmits power to the left speed reducer 14 through the anti-backlash rotating shaft 23, and the left speed reducer 14 also transmits power to the tail end driving large gear 11 through the left output gear 15 to form a transmission closed loop;
Because the right speed reducer 9 and the left speed reducer 14 are both positioned in the corresponding transmission closed loops to form a double-speed-change full-chain transmission structure, even if transmission gaps are formed inside the right speed reducer 9 and the left speed reducer 14, the transmission gaps can be effectively eliminated, so that the full-chain gap elimination from the servo motor 1 to the tail end driving large gear 11 is realized, the machining precision of the follow-up machine tool swinging head or milling head is greatly improved, the precision comparable with that of a torque motor can be achieved, the enough transmission torque can be ensured, and the machining use of the machine tool swinging head or milling head in most occasions can be met.
In addition, the right speed reducer 9 and the left speed reducer 14 are both positioned at the rear ends of the corresponding transmission closed loops, so that the relative design size of gears of the anti-backlash transmission can be reduced, the whole space occupation is smaller, and the structure is more compact.
As a specific embodiment, the expansion sleeve assembly comprises an expansion sleeve pressing cover 17, a first expansion sleeve 18, a second expansion sleeve 27 and expansion sleeve connecting bolts 29, the inner ring of the gap eliminating helical gear 19 is sleeved on the sliding sleeve 16, the upper end of the inner ring of the gap eliminating helical gear 19 is provided with a gear step groove, the first expansion sleeve 18 is installed in the gear step groove, the first expansion sleeve 18 is provided with an inverted conical hole, the inverted conical surface at the lower end of the second expansion sleeve 27 is attached to the inverted conical hole, the upper end surface of the second expansion sleeve 27 is pressed and attached to the expansion sleeve pressing cover 17, a plurality of pressing cover mounting holes are formed in the periphery of the expansion sleeve pressing cover 17, the expansion sleeve connecting bolts 29 penetrate through the pressing cover mounting holes, and the expansion sleeve connecting bolts 29 are fixed in the gear end surface screw holes of the upper end surface of the gap eliminating helical gear 19 through screw threads.
The gap eliminating bevel gear 19 can be stably arranged on the sliding sleeve 16 through the expansion sleeve assembly, so that the assembly and the disassembly are convenient, and the later maintenance is facilitated.
The output end of the servo motor 1 is in driving connection with the input end of the input gear shaft 12 through a coupler 2.
An upper box cover 6 is fixedly arranged at the opening of the upper end of the transmission box body 8, an upper output shaft mounting hole is formed in the upper box cover 6 corresponding to the gear shaft 7 and the anti-backlash rotating shaft 23, an output bearing seat 5 is fixedly arranged in the upper output shaft mounting hole, and the top ends of the gear shaft 7 and the anti-backlash rotating shaft 23 are in running fit connection with the corresponding output bearing seat 5 through output shaft bearings;
The lower end face of the transmission case body 8 is provided with lower output shaft mounting holes corresponding to the gear shaft 7 and the anti-backlash rotating shaft 23, and the bottoms of the gear shaft 7 and the anti-backlash rotating shaft 23 are in rotary fit connection with the corresponding lower output shaft mounting holes through output shaft bearings. The assembly structure of the gear shaft 7 and the anti-backlash rotating shaft 23 is reasonable in design, convenient to assemble and disassemble and beneficial to later maintenance.
The top ends of the gear shaft 7 and the anti-backlash rotating shaft 23 are also fixed with a gland 4, and the lower end surface of the gland 4 is pressed against the upper end surface of the uppermost output shaft bearing;
The outer side end face of the output bearing seat 5 is also fixed with a dustproof ring 24, and the dustproof ring 24 is sleeved on the outer ring of the gland 4.
In order to improve the dustproof effect of the anti-backlash transmission, in this embodiment, a dustproof ring groove is formed in the inner ring of the dustproof ring 24, a dustproof ring 30 is embedded in the dustproof ring groove, and the inner ring of the dustproof ring 30 is attached to the circumferential outer ring of the gland 4.
The lower end face of the transmission case 8 is provided with positioning circular grooves corresponding to the gear shaft 7 and the anti-backlash rotating shaft 23, a first central positioning ring 22 is fixedly arranged in each positioning circular groove, and the upper ends of the left speed reducer 14 and the right speed reducer 9 are sleeved on the corresponding first central positioning ring 22. The central axis of the first center positioning ring 22 coincides with the central axis of the corresponding gear shaft 7 or the corresponding gap eliminating rotating shaft 23, and the central axis of the assembled left speed reducer 14 can coincide with the central axis of the gap eliminating rotating shaft 23 by the arrangement of the first center positioning ring 22, so that the central axis of the assembled right speed reducer 9 can coincide with the central axis of the gear shaft 7, and the left speed reducer 14 and the right speed reducer 9 are ensured to have good assembly precision.
The upper case cover 6 is provided with an input shaft mounting hole corresponding to the input gear shaft 12, an upper input bearing seat is fixedly arranged in the input shaft mounting hole, and the upper end of the input gear shaft 12 is in rotary fit connection with the upper input bearing seat through a bearing;
The upper end face of the upper input bearing seat is fixedly provided with a second center positioning ring 13, the lower end of the shell of the servo motor 1 is fixedly arranged on the motor seat 3, and the lower end of the motor seat 3 is sleeved on the second center positioning ring 13; the central axis of the second centering ring 13 coincides with the central axis of the corresponding input gear shaft 12, and the transmission shaft central axis of the assembled servo motor 1 can coincide with the central axis of the input gear shaft 12 by the arrangement of the second centering ring 13, so that the servo motor 1 is ensured to have good assembly precision.
The inner wall of the transmission box body 8 is fixedly provided with a lower input bearing seat, and the lower end of the input gear shaft 12 is in rotary fit connection with the lower input bearing seat through a bearing.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A double-speed-change full-chain anti-backlash servo driving device is characterized in that: the anti-backlash transmission comprises a servo motor (1) and an anti-backlash transmission, wherein the anti-backlash transmission comprises a transmission box body (8), an input gear shaft (12), a gear shaft (7) and an anti-backlash rotating shaft (23) which are rotatably arranged in the transmission box body (8), the input end of the input gear shaft (12) is in driving connection with the servo motor (1), an input bevel gear (26) is arranged on the input gear shaft (12), a bevel gear (25) which is used for being meshed with the input bevel gear (26) is arranged on the gear shaft (7), a sliding sleeve (16) is vertically and slidably arranged on the anti-backlash rotating shaft (23) through a shaft key, a pre-compaction nut (21) is fixedly arranged on the outer wall of the sliding sleeve (16) through an expansion sleeve component, a spring lower supporting seat (20) is arranged on the upper end surface of the pre-compaction nut (21), a plurality of spring lower supporting seats (20) are arranged on the lower end surfaces of the anti-backlash rotating shaft (23), a plurality of spring grooves are distributed on the lower end surfaces of the sliding sleeve (16), and clearance springs (28) are arranged in the spring grooves and are in contact with one ends of the spring lower supporting seats (28) which are in contact with the spring lower spring supporting seats (28) in a abutting mode;
The bottom end of the anti-backlash rotating shaft (23) extends out of the transmission box body (8) and is in driving connection with the input end of the left speed reducer (14), and the output end of the left speed reducer (14) is provided with a left output gear (15); the bottom end of the gear shaft (7) extends out of the transmission box body (8) and is in driving connection with the input end of the right speed reducer (9), and a right output gear (10) is arranged at the output end of the right speed reducer (9); the left output gear (15) and the right output gear (10) are both in meshed connection with the tail end driving large gear (11);
The expansion sleeve assembly comprises an expansion sleeve pressing cover (17), a first expansion sleeve (18), a second expansion sleeve (27) and an expansion sleeve connecting bolt (29), an inner ring of the clearance eliminating helical gear (19) is sleeved on the sliding sleeve (16), a gear step groove is formed in the upper end of the inner ring of the clearance eliminating helical gear (19), the first expansion sleeve (18) is installed in the gear step groove, the first expansion sleeve (18) is provided with an inverted conical hole, the inverted conical surface of the lower end of the second expansion sleeve (27) is attached to the inverted conical hole, an expansion sleeve pressing cover (17) is pressed on the upper end face of the second expansion sleeve (27), a plurality of pressing cover mounting holes are formed in the periphery of the expansion sleeve pressing cover (17), the expansion sleeve connecting bolt (29) is arranged in the pressing cover mounting holes in a penetrating mode, and the expansion sleeve connecting bolt (29) is fixed in a gear end face screw hole of the upper end face of the clearance eliminating helical gear (19) through screw threads.
2. The dual speed full-chain anti-backlash servo drive of claim 1, wherein: the output end of the servo motor (1) is in driving connection with the input end of the input gear shaft (12) through the coupler (2).
3. The dual speed full-chain anti-backlash servo drive of claim 1, wherein: an upper box cover (6) is fixedly arranged at an opening at the upper end of the transmission box body (8), upper output shaft mounting holes are formed in the upper box cover (6) corresponding to the gear shaft (7) and the clearance elimination rotating shaft (23), an output bearing seat (5) is fixedly arranged in the upper output shaft mounting holes, and the top ends of the gear shaft (7) and the clearance elimination rotating shaft (23) are in rotary fit connection with the corresponding output shaft bearing seat (5) through output shaft bearings; the lower end face of the transmission box body (8) is provided with lower output shaft mounting holes corresponding to the gear shaft (7) and the gap eliminating rotating shaft (23), and the bottoms of the gear shaft (7) and the gap eliminating rotating shaft (23) are in running fit connection with the corresponding lower output shaft mounting holes through output shaft bearings.
4. A dual speed full chain anti-backlash servo drive as claimed in claim 3, wherein: the top ends of the gear shaft (7) and the anti-backlash rotating shaft (23) are also fixed with a gland (4), and the lower end surface of the gland (4) is pressed against the upper end surface of the uppermost output shaft bearing; the outer side end face of the output shaft bearing seat (5) is also fixed with a dustproof ring (24), and the dustproof ring (24) is sleeved on the outer ring of the gland (4).
5. The dual speed full chain anti-backlash servo drive of claim 4, wherein: the inner ring of the dustproof ring (24) is provided with a dustproof ring groove, a dustproof ring (30) is embedded in the dustproof ring groove, and the inner ring of the dustproof ring (30) is attached to the circumferential outer ring of the gland (4).
6. A dual speed full chain anti-backlash servo drive as claimed in claim 3, wherein: the lower end face of the transmission box body (8) is provided with a positioning circular groove corresponding to the gear shaft (7) and the clearance eliminating rotating shaft (23), a first central positioning ring (22) is fixedly arranged in the positioning circular groove, and the upper ends of the left speed reducer (14) and the right speed reducer (9) are sleeved on the corresponding first central positioning ring (22).
7. The dual speed full chain anti-backlash servo drive of claim 6, wherein: the upper box cover (6) is provided with an input shaft mounting hole corresponding to the input gear shaft (12), an upper input bearing seat is fixedly arranged in the input shaft mounting hole, and the upper end of the input gear shaft (12) is in rotary fit connection with the upper input bearing seat through a bearing; the upper end face of the upper input bearing seat is fixedly provided with a second center positioning ring (13), the lower end of the shell of the servo motor (1) is fixedly arranged on the motor seat (3), and the lower end of the motor seat (3) is sleeved on the second center positioning ring (13); the inner wall of the transmission box body (8) is fixedly provided with a lower input bearing seat, and the lower end of the input gear shaft (12) is in rotary fit connection with the lower input bearing seat through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110453323.6A CN112943912B (en) | 2021-04-26 | 2021-04-26 | Double-speed-change full-chain anti-backlash servo driving device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110453323.6A CN112943912B (en) | 2021-04-26 | 2021-04-26 | Double-speed-change full-chain anti-backlash servo driving device |
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| CN112943912A CN112943912A (en) | 2021-06-11 |
| CN112943912B true CN112943912B (en) | 2024-10-11 |
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| CN202110453323.6A Active CN112943912B (en) | 2021-04-26 | 2021-04-26 | Double-speed-change full-chain anti-backlash servo driving device |
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| CN115031014A (en) * | 2022-06-07 | 2022-09-09 | 安徽普瑞斯电工机械有限公司 | Belt traction transmission mechanism capable of eliminating transmission clearance |
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| CN214999327U (en) * | 2021-04-26 | 2021-12-03 | 雷亿尔精密机械科技(常州)有限公司 | Double-speed-change full-chain backlash eliminating servo driving device |
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| CN201739439U (en) * | 2010-05-14 | 2011-02-09 | 常州常棱重型数控机床有限公司 | Anti-backlash speed reducer |
| KR20150087569A (en) * | 2014-01-22 | 2015-07-30 | 선우로보텍 주식회사 | Power transmission device removed backlash |
| CN206478215U (en) * | 2016-12-29 | 2017-09-08 | 中国电子科技集团公司第五十四研究所 | A kind of turntable with dual-driving chain backlash eliminating equipment |
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