CN218800749U - Eccentric mechanism capable of simultaneously adjusting clearance between worm gear and worm and gear rack - Google Patents
Eccentric mechanism capable of simultaneously adjusting clearance between worm gear and worm and gear rack Download PDFInfo
- Publication number
- CN218800749U CN218800749U CN202121796514.4U CN202121796514U CN218800749U CN 218800749 U CN218800749 U CN 218800749U CN 202121796514 U CN202121796514 U CN 202121796514U CN 218800749 U CN218800749 U CN 218800749U
- Authority
- CN
- China
- Prior art keywords
- gear
- worm
- rack
- feeding
- clearance
- 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.)
- Active
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The invention provides an eccentric mechanism capable of simultaneously adjusting a gap between a worm gear and a gear rack, belonging to the technical field of machinery and comprising a gear, a rack, a feeding transmission worm gear, a feeding transmission worm and an eccentric sleeve, wherein the feeding transmission worm gear is connected with the gear through the eccentric sleeve, the gear and the rack are in tooth meshing, the feeding transmission worm gear and the feeding transmission worm are in tooth meshing, and the operation of the feeding transmission worm gear and the feeding transmission worm is controlled by a servo motor through a feeding mechanism. The gear rack clearance and the feeding transmission worm and worm wheel clearance are simultaneously adjusted by the eccentric sleeve arranged on the supporting plate, the structure is simple and easy to understand, and the installation and the debugging are convenient; the differential mechanism is arranged between the two feeding transmission worms, and the differential mechanism is different in synchronization of the two feeding transmission worms and the worm wheel to make up the micro gap.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment, and particularly relates to an eccentric mechanism capable of adjusting the clearance between a worm gear and a gear rack simultaneously.
Background
The TK series numerical control intelligent deep hole machine tool is a brand new intelligent deep hole machine tool, unmanned operation of the machine tool can be achieved through an intelligent management system in a factory, a lead screw feeding system of an existing T21 series deep hole machine tool is in lead screw transmission, a lead screw rotates to drive a supporting plate to move during cutting to achieve cutting of a cutter, a lead screw nut rotates at a high speed to achieve quick cutter withdrawal during cutter withdrawal, the nut is made of 6-6-3 copper, the nut is damaged quickly after being used for a long time, and replacement is troublesome, so that the feeding system is usually selected to be gear transmission, but the gear transmission cannot achieve the same precision due to the fact that a worm and a worm are fed in the gear transmission, and the defect of transmission errors can occur.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide an eccentric mechanism for simultaneously adjusting a gap between a worm gear and a rack gear, so as to solve the above problems, the gap between the rack gear and the gap between the feed transmission worm gear and the worm gear of the present invention are simultaneously adjusted by an eccentric sleeve mounted on a supporting plate, and the structure is simple and easy to understand, and convenient to install and debug; the feeding system is a double-rack transmission controlled by an external encoder, a servo motor drives a supporting plate to move to realize the cutting function of a cutter, the servo motor is transmitted to a feeding transmission worm after being decelerated by a gear, the feeding transmission worms on two sides are of a differential structure, the differential is used for solving the problem that two racks are asynchronous, two sets of feeding transmission worms and worm wheels with the same design cannot have the same precision, the precision cannot be the same due to the addition of the gear and the rack, the error is increased when the feeding transmission worms are added together, the creeping phenomenon can occur when a machine tool dragging plate is used for a long time, the differential is installed between the two feeding transmission worms, and the differential compensates for a micro gap when the two feeding transmission worms and the worm wheels are asynchronous.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an eccentric mechanism in simultaneous adjustment worm gear and rack and pinion clearance, includes gear, rack, feeds the transmission worm wheel, feeds transmission worm and eccentric sleeve, feed the transmission worm wheel with the gear is connected through eccentric sleeve, carry out the tooth meshing between gear and the rack, feed the transmission worm wheel and feed and carry out the tooth meshing between the transmission worm, the operation of feeding the transmission worm wheel and feeding the transmission worm is controlled through servo motor through feed mechanism.
Preferably, the feeding mechanism comprises a gear shaft, a speed reduction shaft, a differential structure and two sets of feeding systems; the servo motor is connected with a gear shaft and controls rotation of the gear shaft, a gear shaft gear is arranged on the gear shaft in a matching mode, speed reducing wheels are arranged at two ends of the speed reducing shaft in a matching mode respectively, the gear shaft gear is in gear meshing with one of the speed reducing wheels, the other speed reducing wheel is in gear meshing with a gear on a differential structure, two ends of the differential structure are connected with feed transmission worms respectively, and the feed transmission worms are in matching meshing with the feed transmission worm wheels.
Preferably, the feeding transmission worm wheel and the feeding worm of the two feeding systems rotate left and right.
Preferably, the servo motor is a stepless speed regulation servo motor.
Preferably, the stepless speed regulation servo motor selects the stepless speed regulation of feeding of 0-5 meters.
Preferably, an encoder is mounted on the rack, and the servo motor is controlled by an external encoder.
Preferably, the differential structure is selected from a differential.
The invention has the beneficial effects that:
1) The gear rack clearance and the feeding transmission worm and worm wheel clearance are simultaneously adjusted by the eccentric sleeve arranged on the supporting plate, and the structure is simple and easy to understand and is convenient to install and debug.
2) The feeding system is double-rack transmission controlled by an external encoder, a servo motor drives a supporting plate to move to realize a cutter cutting function, the servo motor transmits to a feeding transmission worm after being decelerated by a gear, the feeding transmission worms on two sides are of a differential structure, the differential is used for solving the problem that two racks are asynchronous, two sets of feeding transmission worms and worm gears with the same design cannot have the same precision, the gear and the rack cannot have the same precision, the error is increased when the gear and the rack are added together, the phenomenon of creeping can occur when a machine tool supporting plate is used for a long time, a differential is arranged between the two feeding transmission worms, and the differential compensates for a micro gap when the two feeding transmission worms and worm gears are asynchronous.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a perspective view of the overall structure of the present invention.
Fig. 2 is a front view of the overall structure of the present invention.
Fig. 3 is a schematic structural view of an eccentric structural portion.
In the figure, 1, a servo motor, 2, a gear shaft gear, 3, a speed reducing wheel, 4, an end cover, 5, a feed transmission worm wheel, 6, a feed transmission worm, 7, a differential structure, 8, a gear, 9, a rack, 10 and an eccentric sleeve.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In this embodiment, the feeding mechanism includes a gear shaft, a speed reduction shaft, a differential structure 7, and two sets of feeding systems; the servo motor 1 is connected with a gear shaft and controls rotation of the gear shaft, a gear shaft gear 2 is arranged on the gear shaft in a matching mode, two ends of the speed reducing shaft are respectively provided with a speed reducing wheel 3 in a matching mode, the gear shaft gear 2 is in gear meshing with one speed reducing wheel 3, the other speed reducing wheel 3 is in gear meshing with a gear on a differential structure 7, two ends of the differential structure are respectively connected with a feeding transmission worm 6, and the feeding transmission worm 6 is in matching meshing with a feeding transmission worm wheel 5.
In this embodiment, the feeding transmission worm wheel 5 and the worm 6 of the two feeding systems are a set of left-handed and a set of right-handed screws.
In this embodiment, the servo motor 1 is a stepless speed-regulating servo motor.
In this embodiment, the stepless speed regulation servo motor selects the stepless speed regulation of feeding of 0-5 meters.
In this embodiment, an encoder is installed on the rack 9, and the servo motor 1 is controlled by an external encoder.
In the present embodiment, the differential structure 7 is selected as a differential.
The gear rack clearance and the feeding transmission worm and worm wheel clearance are simultaneously adjusted by the eccentric sleeve arranged on the supporting plate, and the structure is simple and easy to understand and is convenient to install and debug.
The feeding system is a double-rack transmission controlled by an external encoder, a servo motor drives a supporting plate to move to realize the cutting function of a cutter, the servo motor is transmitted to a feeding transmission worm after being decelerated by a gear, the feeding transmission worms on two sides are of a differential structure, the differential is used for solving the problem of asynchronism of two racks, two sets of feeding transmission worms and worm wheels with the same design cannot have the same precision, the gear and the rack cannot have the same precision, the error is increased when the feeding transmission worms and the rack are added together, the creeping phenomenon can occur when a lathe dragging plate is used for a long time, a differential is arranged between the two feeding transmission worms, and the differential compensates for a micro gap when the two feeding transmission worms and the worm wheels are asynchronous.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.
Claims (7)
1. The utility model provides an eccentric mechanism in simultaneous adjustment worm gear and rack and pinion clearance which characterized in that: including gear (8), rack (9), feed transmission worm wheel (5), feed transmission worm (6) and install eccentric sleeve (10) on the layer board, feed transmission worm wheel (5) with gear (8) are connected through eccentric sleeve (10), carry out the tooth meshing between gear (8) and rack (9), feed transmission worm wheel (5) and feed and carry out the tooth meshing between transmission worm (6), the operation of feeding transmission worm wheel (5) and feeding transmission worm (6) is controlled through servo motor (1) through feed mechanism.
2. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the gear rack as claimed in claim 1, wherein: the feeding mechanism comprises a gear shaft, a speed reducing shaft, a differential structure (7) and two sets of feeding systems; servo motor (1) is connected and the rotation of control gear axle with the gear shaft the cooperation is provided with gear shaft gear (2) on the gear shaft the both ends of reducing shaft cooperate respectively to set up gear reducer (3), gear shaft gear (2) carry out gear engagement with one of them gear reducer (3), gear engagement is carried out with the gear on differential structure (7) in another gear reducer (3), the both ends of differential structure are connected respectively and are fed drive worm (6), feed drive worm (6) and feed drive worm wheel (5) cooperation meshing.
3. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the gear rack as claimed in claim 2, wherein: the feeding transmission worm wheel (5) and the worm (6) of the two feeding systems are in left-handed and right-handed rotation.
4. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the gear rack as claimed in claim 1, wherein: the servo motor (1) is a stepless speed regulation servo motor.
5. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the gear rack as claimed in claim 4, wherein: the stepless speed regulation servo motor selects 0-5 m to feed stepless speed regulation.
6. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the gear rack as claimed in claim 1, wherein: an encoder is installed on the rack (9), and the servo motor (1) is controlled by an external encoder.
7. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the gear rack as claimed in claim 2, wherein: the differential structure (7) is selected from a differential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121796514.4U CN218800749U (en) | 2021-08-03 | 2021-08-03 | Eccentric mechanism capable of simultaneously adjusting clearance between worm gear and worm and gear rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121796514.4U CN218800749U (en) | 2021-08-03 | 2021-08-03 | Eccentric mechanism capable of simultaneously adjusting clearance between worm gear and worm and gear rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218800749U true CN218800749U (en) | 2023-04-07 |
Family
ID=87038736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121796514.4U Active CN218800749U (en) | 2021-08-03 | 2021-08-03 | Eccentric mechanism capable of simultaneously adjusting clearance between worm gear and worm and gear rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218800749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478278A (en) * | 2021-08-03 | 2021-10-08 | 德州佳永机械制造有限公司 | Eccentric mechanism capable of adjusting clearance between worm gear and worm and gear rack simultaneously |
-
2021
- 2021-08-03 CN CN202121796514.4U patent/CN218800749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478278A (en) * | 2021-08-03 | 2021-10-08 | 德州佳永机械制造有限公司 | Eccentric mechanism capable of adjusting clearance between worm gear and worm and gear rack simultaneously |
| CN113478278B (en) * | 2021-08-03 | 2024-08-16 | 德州佳永机械制造有限公司 | Eccentric mechanism for simultaneously adjusting gap between worm gear and gear rack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103658801B (en) | Chain digital control gear hobbing machine is manufactured again based on lathe hardware platform | |
| CN218800749U (en) | Eccentric mechanism capable of simultaneously adjusting clearance between worm gear and worm and gear rack | |
| CN201405222Y (en) | Backlash eliminating structure for gear transmission unit | |
| CN101870013A (en) | Numerical control facing head system capable of realizing respective radial feed of multiple cutters | |
| CN103121168A (en) | Numerical-control large-scale precise dual-drive gap removing rotating working table | |
| CN201304581Y (en) | Feed structure with motor driving ball screw nut to rotate | |
| CN103990861A (en) | Variable lead worm dividing head rack of gear grinding machine | |
| CN113478278B (en) | Eccentric mechanism for simultaneously adjusting gap between worm gear and gear rack | |
| CN104964022A (en) | Gear and rack transmission anti-backlash mechanism | |
| CN218800748U (en) | Feeding system with differential double-rack transmission controlled by encoder | |
| CN102371392B (en) | High-speed precise online numerical-control milling machine and control method thereof | |
| CN201708749U (en) | Dual motor driven backlash eliminating device | |
| CN111660125A (en) | Dynamic feeding device and adjusting method | |
| CN201744756U (en) | Numerical control fancing head system for multi-cutter radial feed | |
| CN203875429U (en) | Variable-lead worm dividing head frame for gear grinding machine | |
| CN201172118Y (en) | Multifunctional common universal milling machine | |
| CN206952528U (en) | Turnning and milling set composite for numerically controlled lathe | |
| CN113458835A (en) | Feeding system with differential double-rack transmission controlled by encoder | |
| CN204843676U (en) | Two servo digit control machine tools | |
| CN201824027U (en) | High-precision cylindrical gear pair capable of controlling transmission clearance | |
| CN209959818U (en) | Novel gear rack transmission mechanism | |
| CN106984748A (en) | Numerically-controlled precise screw-rolling machine and automobile multiple lead screw | |
| CN101513696A (en) | Fixed pipeline numerical control end surface beveller | |
| CN201824203U (en) | Additional device of A-axle swinging head structure and B-axle swinging head structure | |
| CN107511509B (en) | Easy-operating boring auxiliary mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |