CN116557513A - Hypoid gear clearance adjusting structure for welding robot - Google Patents
Hypoid gear clearance adjusting structure for welding robot Download PDFInfo
- Publication number
- CN116557513A CN116557513A CN202310534337.XA CN202310534337A CN116557513A CN 116557513 A CN116557513 A CN 116557513A CN 202310534337 A CN202310534337 A CN 202310534337A CN 116557513 A CN116557513 A CN 116557513A
- Authority
- CN
- China
- Prior art keywords
- hypoid gear
- pressing block
- bearing
- sealing tube
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 238000009434 installation Methods 0.000 claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J17/00—Joints
-
- 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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/14—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
- F16H1/145—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only with offset axes, e.g. hypoïd gearings
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02069—Gearboxes for particular applications for industrial applications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses an adjusting structure for hypoid gear clearance of a welding robot, which comprises a body, a sealing tube, a large hypoid gear, a small hypoid gear and an output flange, wherein the sealing tube is arranged on the body; the output flange is rotatably arranged in an opening at one side of the mounting cavity through a first bearing, one end of the large hypoid gear is connected to one end of the output flange through threads, the large hypoid gear is axially adjustable in displacement and is arranged, the sealing tube is rotatably arranged in an opening at the other side of the mounting cavity through a framework oil seal, and one end of the sealing tube is fixedly connected to the other end of the large hypoid gear through a bolt; the small hypoid gear is rotatably arranged in the body through a second bearing, and one end of the small hypoid gear extends into the mounting cavity and is meshed with the large hypoid gear; therefore, the gap between the size-adjustable double-quasi-curved-surface gears is in a reasonable gap range, the structure is compact, the installation is simple, the transmission precision is improved, and the maintenance is convenient.
Description
Technical Field
The invention relates to the technical field of robots, in particular to an adjusting structure for hypoid gear clearance of a welding robot.
Background
At present, more and more welding robots adopt hypoid gears, and the assembly of the existing hypoid gears can only ensure reasonable gaps of products by mechanical processing, so that the processing precision of the products influences the assembly and transmission precision; after the hypoid gear runs for a period of time, gaps are generated due to mutual friction of the two gears, so that the transmission precision is reduced; even mechanical abrasion occurs when the robot runs for a long time, gaps are larger and larger, and repeated gasket adding to trial assembly and adjustment consumes a great amount of time and cost, so that the service life of the robot is influenced.
The prior patent CN206967521U discloses an adjusting structure of a wrist gear backlash of an industrial robot, on the premise of fixing a driving gear, the compression amount of a disc spring matched with a hypoid large gear is controlled by the pretightening force of an adjusting bolt to realize the axial movement of the large gear, so that the interference amount or the backlash when gears are meshed is eliminated, and the method realizes the function of adjusting the gear backlash to a certain extent. Because the dish spring attribute is elastic element, when diversified bolt pretightning force and feed volume are different, the axial elastic deformation that the dish spring took place is different, and long-term compression dish spring also can become invalid to can lead to hypoid tooth terminal surface and initiative gear axis to produce small clamp deflection angle, the periodic wearing and tearing condition can appear in gear drive in-process, and transmission precision also reduces thereupon, and long-term use can reduce gear life more. In addition, the structure belongs to a non-unilateral sleeve and module design, the number of parts of the module matched with two sides of the five-axis wrist is relatively large, the requirement on assembly coaxiality is higher, the installation is difficult, and certain difficulties are caused for later maintenance and repair and disassembly and replacement of parts.
Therefore, a new technology is required to be developed to solve the above-mentioned problems.
Disclosure of Invention
In view of the above, the present invention aims at overcoming the drawbacks of the prior art, and its main objective is to provide a hypoid gear clearance adjusting structure for a welding robot, which can adjust the clearance between hypoid gears within a reasonable clearance range, has a compact structure, is simple to install, improves transmission precision, and is convenient to maintain.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a hypoid gear clearance adjusting structure for a welding robot comprises a body, a sealing tube, a large hypoid gear, a small hypoid gear and an output flange;
the body is provided with an installation cavity with two opening ends, the output flange is rotatably installed in an opening at one side of the installation cavity through a first bearing, the large hypoid gear is rotatably installed in the installation cavity, one end of the large hypoid gear is connected with one end of the output flange through threads, the large hypoid gear can be axially and displaceably arranged in an adjustable manner, the sealing tube is rotatably installed in an opening at the other side of the installation cavity through a framework oil seal, and one end of the sealing tube is fixedly connected with the other end of the large hypoid gear through a bolt; the small hypoid gear is rotatably arranged in the body through a second bearing, and one end of the small hypoid gear extends into the mounting cavity and is meshed with the large hypoid gear;
and the seal tube is rotated, the seal tube is linked with the large hypoid gear to act, and the large hypoid gear can move towards or away from the small hypoid gear, so that the gap between the large hypoid gear and the small hypoid gear is reduced or enlarged.
As a preferable scheme, a spanner hole site for rotating the sealing tube is arranged on the end face of the other end of the sealing tube.
As a preferable scheme, the first bearing is a crossed roller bearing, the crossed roller bearing is fixed in an opening at one side of the mounting cavity, one end of the output flange penetrates through the crossed roller bearing and extends out of one end of the crossed roller bearing, which faces the large hypoid gear, the crossed roller bearing and the large hypoid gear are arranged at intervals, an annular connecting wall is convexly arranged on the peripheral side wall of the other end of the output flange along the circumferential direction, one end of the crossed roller bearing, which faces away from the large hypoid gear, is limited by the annular connecting wall, and the annular connecting wall is fixed with the crossed roller bearing through a first connecting screw.
As a preferable scheme, one end of the output flange comprises a first pressing block and a second pressing block, and the second pressing block extends along the axial direction and one end of the second pressing block penetrates through the first bearing;
the second pressing block is of an annular structure, and a semicircular groove ring is formed on the outer peripheral side wall of one side, facing the large hypoid gear, of the second pressing block; the semicircular groove ring extends along the circumferential direction, two ends of the semicircular groove ring extending along the circumferential direction are not communicated, and the semicircular groove ring penetrates through the inner cavity of the second pressing block so that the first pressing block is formed on one side, facing the large hypoid gear, of the second pressing block;
external threads are arranged on the peripheral side walls of the first pressing block and the second pressing block, a first connecting cavity is concavely arranged at one end of the large hypoid gear, an internal thread is arranged on the inner peripheral side wall of the first connecting cavity, and the external threads are connected with the internal threads in an adaptive mode.
As a preferable scheme, a second connecting cavity is concavely arranged at the other end of the large hypoid gear, a plurality of first connecting holes which are sequentially and uniformly distributed at intervals along a ring are arranged at the bottom of the cavity of the second connecting cavity, the first connecting holes penetrate through the first connecting cavity, a plurality of second connecting holes which are sequentially and uniformly distributed at intervals along the ring are arranged on the end face of one end of the output flange, a part of the second connecting holes sequentially penetrate through a first pressing block and a second pressing block, the first connecting holes are connected with the second connecting holes through second connecting screws, and one end of each second connecting screw penetrates through the first connecting holes to be locked in the second connecting holes; when the second connecting screw is tightened, the axial force makes the first pressing block approach the second pressing block.
As a preferred scheme, the effective thread depth of the second connecting screw in the second pressing block is more than twice the axial thickness of the first pressing block.
As a preferable scheme, the end face of one end of the sealing tube is provided with a first locking hole, the other end of the large hypoid gear is provided with a second locking hole, and the first locking hole is connected with the second locking hole through a locking screw.
As a preferable scheme, the sealing tube is provided with a first bolt hole penetrating through two ends of the sealing tube, the large hypoid gear is provided with a second bolt hole, and the first bolt hole is connected with the second bolt hole through the bolt.
As a preferred scheme, the lower extreme of body has the installation through-hole, the upper end of installation through-hole communicates in the installation cavity, little hypoid gear is located the installation through-hole, little hypoid gear's upper end passes the installation through-hole and stretches into the installation cavity, the second bearing cover is located outside little hypoid gear's the lower extreme, the upper end of second bearing is limited by the spacing wall in the installation through-hole, the lower extreme of second bearing passes through bearing cover spacing fixed connection in the body, the inner circle of second bearing is fixed through a lock nut, the lock nut cover is located outside little hypoid gear's the lower extreme.
As a preferable scheme, the lower end of the body is fixedly connected with a motor, and the other end of the hypoid gear is connected with an output shaft of the motor.
Compared with the prior art, the invention has obvious advantages and beneficial effects, in particular, the technical proposal shows that one end of the large hypoid gear is connected with one end of the output flange through threads, and the large hypoid gear is axially arranged in a displacement adjustable way, so that one end of the sealing tube is fixedly connected with the other end of the large hypoid gear through bolts, thus, the sealing tube is linked with the large hypoid gear to act by rotating the sealing tube, the large hypoid gear can move towards or away from the small hypoid gear, so that the gap between the large hypoid gear and the small hypoid gear is reduced or enlarged, the gap between the adjustable size hypoid gear is in a reasonable gap range, the structure is compact, the installation is simple, the transmission precision is improved, the maintenance is convenient, and the service life of the gear is prolonged;
secondly, a first locking hole is formed in the end face of one end of the sealing tube, a second locking hole is formed in the other end of the large hypoid gear, and the first locking hole is connected with the second locking hole through a locking screw, so that the large hypoid gear can be prevented from moving upwards and rotating axially in the gap adjustment operation, and compared with a fixing mode that a side jackscrew is extremely easy to damage threads, the fixing mode ensures installation and simultaneously effectively protects internal and external threads, and therefore stable and reliable structure and rapid adjustment are ensured;
furthermore, a spanner hole site is arranged on the end surface of the other end of the sealing tube, so that the sealing tube can be twisted to rotate to adjust the gear clearance, and the assembly and the maintenance are convenient;
moreover, by adopting the crossed roller bearing, the rigidity can be improved by 3 to 4 times instead of a thin-wall bearing, the bearing clearance can be adjusted, the moment of inertia is low, the starting torque is low, and high-precision rotary motion can be obtained even if a preload is applied;
and through the combination design of the framework oil seal and the first O-shaped sealing ring and the second O-shaped sealing ring, lubricating oil in the body can be prevented from leaking or being thrown out, and the sealing performance is good.
In order to more clearly illustrate the structural features, technical means, and specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the specific embodiments.
Drawings
FIG. 1 is a schematic perspective view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic perspective view of another angular overall structure of an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an embodiment of the present invention with the body removed;
FIG. 4 is another angular schematic view of the structure shown in FIG. 3;
FIG. 5 is an exploded view of an embodiment of the present invention;
FIG. 6 is another exploded view of an embodiment of the present invention;
FIG. 7 is a cross-sectional view of an embodiment of the present invention;
FIG. 8 is a schematic perspective view of an output flange according to an embodiment of the present invention.
The attached drawings are used for identifying and describing:
10. body 11, installation cavity
12. Mounting through hole 13, bearing gland
20. Sealing tube 21, first locking hole
22. Locking screw 23, second O-shaped sealing ring
30. Large hypoid gear 31, first connecting chamber
32. Second connecting cavity 33, second connecting screw
40. Hypoid gear
50. Output flange 51, annular connecting wall
52. First connecting screw 53, first O-shaped sealing ring
54. First press block 55, second press block
56. Semicircular groove ring 60 and crossed roller bearing
70. Skeleton oil seal 80, angular contact bearing
90. Motor 91, output shaft
101. And (5) locking the nut.
Detailed Description
Referring to fig. 1 to 8, specific structures of embodiments of the present invention are shown.
A hypoid gear clearance adjusting structure for a welding robot comprises a body 10, a sealing tube 20, a large hypoid gear 30, a small hypoid gear 40 and an output flange 50.
The middle parts of the sealing tube 20, the large hypoid gear 30 and the output flange 50 are all arranged in a penetrating way along the axial direction; the body 10 is provided with a mounting cavity 11 with two open ends, the output flange 50 is rotatably mounted in one side opening of the mounting cavity 11 through a first bearing, the large hypoid gear 30 is rotatably mounted in the mounting cavity 11, one end of the large hypoid gear 30 is connected with one end of the output flange 50 through threads, the large hypoid gear 30 is axially and displaceably arranged in an adjustable manner, the sealing tube 20 is rotatably mounted in the other side opening of the mounting cavity 11 through a framework oil seal 70, and one end of the sealing tube 20 is fixedly connected with the other end of the large hypoid gear 30 through a bolt; the seal tube 20 is provided with a first bolt hole penetrating through both ends of the seal tube 20, the large hypoid gear 30 is provided with a second bolt hole, and the first bolt hole is connected with the second bolt hole through the bolt. The small hypoid gear 40 is rotatably installed in the body 10 through a second bearing, and one end of the small hypoid gear 40 extends into the installation cavity 11 and is engaged with the large hypoid gear 30; the lower end of the body 10 is fixedly connected with a motor 90, and the other end of the hypoid gear 40 is connected with an output shaft 91 of the motor 90. Here, the seal tube 20 is rotated, the seal tube 20 is linked with the large hypoid gear 30 to act, the large hypoid gear 30 can move towards or away from the small hypoid gear 40, so that the gap between the large hypoid gear 30 and the small hypoid gear 40 is reduced or enlarged, the gap between the large hypoid gear 30 and the small hypoid gear 40 can be adjusted within a reasonable gap range, the structure is compact, the installation is simple, the transmission precision is improved, the maintenance is convenient, and the service life of the gear is prolonged.
The first bearing is a crossed roller bearing 60, the crossed roller bearing 60 is fixed in an opening at one side of the mounting cavity 11, one end of the output flange 50 penetrates through the crossed roller bearing 60 and extends out of one end of the crossed roller bearing 60, which faces the large hypoid gear 30, the crossed roller bearing 60 is arranged at a distance from the large hypoid gear 30, an annular connecting wall 51 is convexly arranged on the peripheral side wall of the other end of the output flange 50 along the circumferential direction, one end of the crossed roller bearing 60, which faces away from the large hypoid gear 30, is limited by the annular connecting wall 51, and the annular connecting wall 51 is fixed with the crossed roller bearing 60 through a first connecting screw 52. A first O-ring 53 is provided between the annular connecting wall 51 and the cross roller bearing 60.
The second bearing is an angular contact bearing 80, the lower extreme of the body 10 has a mounting through hole 12, the upper end of the mounting through hole 12 is communicated with the mounting cavity 11, the small hypoid gear 40 is positioned in the mounting through hole 12, the upper end of the small hypoid gear 40 penetrates through the mounting through hole 12 and stretches into the mounting cavity 11, the second bearing is sleeved outside the lower end of the small hypoid gear 40, the upper end of the second bearing is limited by a limiting wall in the mounting through hole 12, the lower end of the second bearing is fixedly connected to the body 10 in a limiting manner through a bearing gland 13, the inner ring of the second bearing is fixed through a locking nut 101, and the locking nut 101 is sleeved outside the lower end of the small hypoid gear 40.
One end of the output flange 50 comprises a first pressing block 54 and a second pressing block 55, wherein the second pressing block 55 extends along the axial direction and one end of the second pressing block 55 penetrates through the crossed roller bearing 60; the second pressing block 55 has an annular structure, and a semicircular groove ring 56 is formed on the outer peripheral side wall of the second pressing block 55 facing the large hypoid gear 30; the half-round groove ring 56 extends along the circumferential direction, and two ends of the half-round groove ring 56 extending along the circumferential direction are not communicated, the half-round groove ring 56 penetrates through the inner cavity of the second pressing block 55, so that the first pressing block 54 is formed on one side of the second pressing block 55 facing the large hypoid gear 30; external threads are arranged on the outer peripheral side walls of the first pressing block 54 and the second pressing block 55, a first connecting cavity 31 is concavely arranged at one end of the large hypoid gear 30, internal threads are arranged on the inner peripheral side wall of the first connecting cavity 31, and the external threads are connected with the internal threads in an adaptive mode. One end of the second pressing block 55 extends into the first connecting cavity 31, and a brass gasket is arranged between one end of the second pressing block 55 and the bottom of the first connecting cavity 31.
The other end of big hypoid gear 30 is concave to be equipped with second connecting chamber 32, the chamber bottom of second connecting chamber 32 is provided with a plurality of first connecting holes that follow annular in proper order even interval arrangement, first connecting hole link up to first connecting chamber 31, the terminal surface of the one end of output flange 50 is provided with a plurality of second connecting holes that follow annular in proper order even interval arrangement, and partial second connecting hole link up first briquetting 54, second briquetting 55 in proper order, first connecting hole is connected through second connecting screw 33 with the second connecting hole, the one end of second connecting screw 33 passes first connecting hole lock solid in the second connecting hole. Here, the effective thread depth of the second connecting screw 33 in the second press block 55 is greater than twice the axial thickness of the first press block 54. When the second connecting screw 33 is tightened, the axial force brings the first pressing block 54 closer to the second pressing block 55, and the internal and external threads are subjected to the axial force so that no relative rotation occurs between the output flange 50 and the large hypoid gear 30.
One end of the sealing tube 20 stretches into the second connecting cavity 32, a first locking hole 21 is formed in the end face of one end of the sealing tube 20, a second locking hole is formed in the other end of the large hypoid gear 30, and the first locking hole 21 is connected with the second locking hole through a locking screw 22, so that the large hypoid gear 30 can be prevented from moving upwards and rotating axially in the gap operation, compared with a fixing mode that threads are easily damaged by side jackscrews, the fixing mode effectively protects internal and external threads when installation is guaranteed, and the structure is guaranteed to be stable, reliable and fast to adjust. The second locking hole is formed at the bottom of the second connecting chamber 32. A second O-ring 23 is provided between one end of the sealing tube 20 and the bottom of the second connecting chamber 32.
The end face of the other end of the sealing tube 20 is provided with a wrench hole for rotating the sealing tube 20, which can be used for twisting the sealing tube 20 to rotate so as to adjust the gear clearance, and is convenient to assemble and maintain.
In summary, the design focus of the invention is that one end of the large hypoid gear is connected to one end of the output flange through threads, and the large hypoid gear is arranged in an axially adjustable displacement manner, so that one end of the sealing tube is fixedly connected to the other end of the large hypoid gear through a bolt, and the sealing tube is linked with the large hypoid gear to act by rotating the sealing tube, so that the large hypoid gear can move towards or away from the small hypoid gear, and the gap between the large hypoid gear and the small hypoid gear is reduced or enlarged, thereby the gap between the large hypoid gear and the small hypoid gear can be adjusted within a reasonable gap range, the structure is compact, the installation is simple, the transmission precision is improved, the maintenance is convenient, and the service life of the gear is prolonged; secondly, a first locking hole is formed in the end face of one end of the sealing tube, a second locking hole is formed in the other end of the large hypoid gear, and the first locking hole is connected with the second locking hole through a locking screw, so that the large hypoid gear can be prevented from moving upwards and rotating axially in the gap adjustment operation, and compared with a fixing mode that a side jackscrew is extremely easy to damage threads, the fixing mode ensures installation and simultaneously effectively protects internal and external threads, and therefore stable and reliable structure and rapid adjustment are ensured; furthermore, a spanner hole site is arranged on the end surface of the other end of the sealing tube, so that the sealing tube can be twisted to rotate to adjust the gear clearance, and the assembly and the maintenance are convenient; moreover, by adopting the crossed roller bearing, the rigidity can be improved by 3 to 4 times instead of a thin-wall bearing, the bearing clearance can be adjusted, the moment of inertia is low, the starting torque is low, and high-precision rotary motion can be obtained even if a preload is applied; and through the combination design of the framework oil seal and the first O-shaped sealing ring and the second O-shaped sealing ring, lubricating oil in the body can be prevented from leaking or being thrown out, and the sealing performance is good.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention are still within the scope of the technical solutions of the present invention.
Claims (10)
1. An adjusting structure for hypoid gear clearance of welding robot, characterized in that: the device comprises a body, a sealing tube, a large hypoid gear, a small hypoid gear and an output flange;
the body is provided with an installation cavity with two opening ends, the output flange is rotatably installed in an opening at one side of the installation cavity through a first bearing, the large hypoid gear is rotatably installed in the installation cavity, one end of the large hypoid gear is connected with one end of the output flange through threads, the large hypoid gear can be axially and displaceably arranged in an adjustable manner, the sealing tube is rotatably installed in an opening at the other side of the installation cavity through a framework oil seal, and one end of the sealing tube is fixedly connected with the other end of the large hypoid gear through a bolt; the small hypoid gear is rotatably arranged in the body through a second bearing, and one end of the small hypoid gear extends into the mounting cavity and is meshed with the large hypoid gear;
and the seal tube is rotated, the seal tube is linked with the large hypoid gear to act, and the large hypoid gear can move towards or away from the small hypoid gear, so that the gap between the large hypoid gear and the small hypoid gear is reduced or enlarged.
2. A hypoid gear lash adjustment structure for a welding robot according to claim 1, characterized in that: the end face of the other end of the sealing tube is provided with a spanner hole site for rotating the sealing tube.
3. A hypoid gear lash adjustment structure for a welding robot according to claim 1, characterized in that: the first bearing is a crossed roller bearing, the crossed roller bearing is fixed in an opening at one side of the mounting cavity, one end of the output flange penetrates through the crossed roller bearing and extends out of one end of the crossed roller bearing, which faces the large hypoid gear, the crossed roller bearing and the large hypoid gear are arranged at intervals, an annular connecting wall is convexly arranged on the peripheral side wall of the other end of the output flange along the circumferential direction, one end of the crossed roller bearing, which faces away from the large hypoid gear, is limited by the annular connecting wall, and the annular connecting wall is fixed with the crossed roller bearing through a first connecting screw.
4. A hypoid gear lash adjustment structure for a welding robot according to claim 1, characterized in that: one end of the output flange comprises a first pressing block and a second pressing block, and the second pressing block extends along the axial direction and one end of the second pressing block penetrates through the first bearing;
the second pressing block is of an annular structure, and a semicircular groove ring is formed on the outer peripheral side wall of one side, facing the large hypoid gear, of the second pressing block; the semicircular groove ring extends along the circumferential direction, two ends of the semicircular groove ring extending along the circumferential direction are not communicated, and the semicircular groove ring penetrates through the inner cavity of the second pressing block so that the first pressing block is formed on one side, facing the large hypoid gear, of the second pressing block;
external threads are arranged on the peripheral side walls of the first pressing block and the second pressing block, a first connecting cavity is concavely arranged at one end of the large hypoid gear, an internal thread is arranged on the inner peripheral side wall of the first connecting cavity, and the external threads are connected with the internal threads in an adaptive mode.
5. A hypoid gear lash adjustment structure for a welding robot as claimed in claim 4, wherein: the other end of the large hypoid gear is concavely provided with a second connecting cavity, the bottom of the second connecting cavity is provided with a plurality of first connecting holes which are sequentially and uniformly spaced along the ring shape, the first connecting holes penetrate through the first connecting cavity, the end face of one end of the output flange is provided with a plurality of second connecting holes which are sequentially and uniformly spaced along the ring shape, part of the second connecting holes penetrate through the first pressing block and the second pressing block in sequence, the first connecting holes are connected with the second connecting holes through second connecting screws, and one end of each second connecting screw penetrates through the first connecting holes and is locked in the second connecting holes; when the second connecting screw is tightened, the axial force makes the first pressing block approach the second pressing block.
6. A hypoid gear lash adjustment structure for a welding robot as claimed in claim 5, wherein: the effective thread depth of the second connecting screw in the second pressing block is greater than twice the axial thickness of the first pressing block.
7. A hypoid gear lash adjustment structure for a welding robot according to claim 1, characterized in that: the end face of one end of the sealing tube is provided with a first locking hole, the other end of the large hypoid gear is provided with a second locking hole, and the first locking hole is connected with the second locking hole through a locking screw.
8. A hypoid gear lash adjustment structure for a welding robot according to claim 1, characterized in that: the sealing tube is provided with a first bolt hole penetrating through two ends of the sealing tube, the large hypoid gear is provided with a second bolt hole, and the first bolt hole is connected with the second bolt hole through the bolt.
9. A hypoid gear lash adjustment structure for a welding robot according to claim 1, characterized in that: the lower extreme of body has the installation through-hole, the upper end intercommunication of installation through-hole is in the installation cavity, little hypoid gear is located the installation through-hole, little hypoid gear's upper end passes the installation through-hole and stretches into the installation cavity, the second bearing cover is located outside little hypoid gear's the lower extreme, the upper end of second bearing is limited by the spacing wall in the installation through-hole, the lower extreme of second bearing passes through bearing cover spacing fixed connection in the body, the inner circle of second bearing is fixed through a lock nut, the lock nut cover is located outside little hypoid gear's the lower extreme.
10. A hypoid gear lash adjustment structure for a welding robot according to claim 1, characterized in that: the lower extreme fixedly connected with motor of body, the other end of hypoid gear is connected with the output shaft of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310534337.XA CN116557513A (en) | 2023-05-11 | 2023-05-11 | Hypoid gear clearance adjusting structure for welding robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310534337.XA CN116557513A (en) | 2023-05-11 | 2023-05-11 | Hypoid gear clearance adjusting structure for welding robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116557513A true CN116557513A (en) | 2023-08-08 |
Family
ID=87491179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310534337.XA Pending CN116557513A (en) | 2023-05-11 | 2023-05-11 | Hypoid gear clearance adjusting structure for welding robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116557513A (en) |
-
2023
- 2023-05-11 CN CN202310534337.XA patent/CN116557513A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102507323B1 (en) | Double-Flex Spline Harmonic Reducer with Limited Deformation | |
| US4912998A (en) | Gear arrangement | |
| CN112096790A (en) | Internal-driving internal-meshing wear compensation plane enveloping worm transmission device | |
| CN116557513A (en) | Hypoid gear clearance adjusting structure for welding robot | |
| RU173084U1 (en) | PLANETARY CYCLOIDAL REDUCER | |
| CN111872972B (en) | Gear clearance fine adjustment structure of nested joint of welding robot | |
| CN215980646U (en) | Elastic eccentric speed reducer | |
| CN110131399B (en) | Combined precision planetary gear reducer | |
| CN210087976U (en) | Precision planetary gear speed reducer | |
| CN212318745U (en) | Industrial robot wrist gear clearance adjustment mechanism | |
| CN205639489U (en) | Planet reduction gear that back clearance is adjustable | |
| CN210661314U (en) | Backlash adjusting structure | |
| CN113983154A (en) | Constant back clearance type planetary speed reducing mechanism | |
| CN113635341A (en) | End transmission structure of industrial robot wrist transmission structure | |
| CN110836223A (en) | Crossed roller bearing and speed reducer | |
| RU2760068C1 (en) | Gearbox with satellites with external thread and joint containing such gearbox | |
| US4178815A (en) | Sealed torque transmission assembly | |
| CN219543236U (en) | Robot joint and robot | |
| CN220416202U (en) | Gap compensation mechanism and vehicle | |
| CN220051899U (en) | Robot joint and robot | |
| CN210106528U (en) | Precision planetary gear reducer suitable for tensioning installation | |
| CN113404820B (en) | Adjustable-gap multi-crank variable-tooth-thickness precision transmission device | |
| CN216768296U (en) | Speed reducer | |
| CN212241048U (en) | Wrist synchronous belt transmission mechanism of welding robot | |
| CN210830367U (en) | Precision compensation type harmonic speed reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |