CN213935387U - Variable non-circular gear machining tool - Google Patents
Variable non-circular gear machining tool Download PDFInfo
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- CN213935387U CN213935387U CN202023107228.0U CN202023107228U CN213935387U CN 213935387 U CN213935387 U CN 213935387U CN 202023107228 U CN202023107228 U CN 202023107228U CN 213935387 U CN213935387 U CN 213935387U
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- circular gear
- gear
- cutter
- circular
- assembly
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Abstract
The utility model discloses a variable non-circular gear processing utensil, its characterized in that: including cutter unit spare and adjustable non-circular gear assembly, cutter unit spare below be equipped with the drive gear of non-circular gear assembly meshing, non-circular gear assembly fixed connection is in the frame, cutter unit spare rotates through rocking arm subassembly to be connected in the frame, be equipped with on the rocking arm subassembly relatively non-circular gear assembly radial movement's slider, the slider with cutter unit spare is connected. The utility model discloses variable non-circular gear processing utensil, simple structure, convenient to use can realize that simulation festival curve is the non-circular gear generation course of working of arbitrary shape, and the suitability is good, has stronger practicality and better application prospect.
Description
Technical Field
The utility model belongs to the technical field of the teaching experiment, more specifically say, relate to a variable non-circular gear processing utensil.
Background
The gear generating experiment is one of basic experiments in teaching of mechanical principle of various major machinery, and the method for processing the gear tooth profile curve is called as generating method by utilizing the principle that mutually meshed gear tooth profile curves are mutually envelope lines. The gear generating instrument is an experimental teaching instrument for processing gear contour lines by a simulation generating method. The patent with the patent number of CN102991216A discloses the principle and the manufacturing method of an elliptic gear generating instrument, which is characterized in that a standard involute gear is meshed with an elliptic gear to realize the pure rolling of a pitch curve driven by a non-circular gear, thereby realizing the simulation of the generating method processing process of the non-circular gear tooth profile curve. However, the generating instrument can only simulate and machine a specific elliptic gear, and cannot simulate and machine the tooth profile of a general non-circular gear by a generating method. In order to overcome the defect, the patent provides a solution of a noncircular gear generating instrument with a variable noncircular gear pitch curve shape, and the noncircular gear generating machining process with a simulated pitch curve in any shape can be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that prior art exists, provide a simple structure, convenient to use can realize the simulation festival curve and become the course of working for the non-circular gear generation of arbitrary shape, the variable non-circular gear processing utensil that the suitability is good.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: the variable non-circular gear processing tool is characterized in that: including cutter unit spare and adjustable non-circular gear assembly, cutter unit spare below be equipped with the drive gear of non-circular gear assembly meshing, non-circular gear assembly fixed connection is in the frame, cutter unit spare leads to rocking arm subassembly to rotate to be connected in the frame, be equipped with on the rocking arm subassembly can be relative non-circular gear assembly radial movement's slider, the slider with cutter unit spare connects.
In order to make the above technical solution more detailed and concrete, the present invention further provides the following preferable technical solution to obtain satisfactory practical effect:
the non-circular gear assembly comprises a flexible non-circular gear support, a flexible non-circular gear meshed with the transmission gear is arranged in the flexible non-circular gear support, and a non-circular gear blank is arranged on the flexible non-circular gear; the non-circular gear blank is arranged on the flexible non-circular gear support, and a second compression nut is arranged at the upper end of the flexible non-circular gear support.
The flexible non-circular gear support is of a polygonal box structure, and a plurality of groups of adjusting assemblies are arranged along the radial direction of the flexible non-circular gear.
The adjusting assembly comprises a screw rod which is arranged on the flexible non-circular gear support along the radial direction, and a movable pressing block which is pressed on the inner side surface of the flexible non-circular gear is connected to the screw rod in a threaded mode.
The rack comprises a rack body, rack support legs are arranged on the periphery of the rack body, and a fixed support shaft is arranged on the rack body.
The flexible non-circular gear bracket is mounted and connected on the fixed supporting shaft.
The rotating arm assembly is connected to the fixed supporting shaft through a first rolling bearing, and a fourth rolling bearing is arranged between the rotating arm assembly and the flexible non-circular gear support above the rotating arm assembly.
The cutter assembly comprises a cutter gear, and the cutter gear and the transmission gear are coaxially arranged on a cutter gear shaft; and a first compression nut is arranged on the cutter gear shaft.
The cutter gear shaft is connected to the sliding block through a second rolling bearing.
The rotating arm body of the rotating arm assembly is provided with a guide rod for supporting the sliding block, the sliding block can move along the guide rod, and one end of the rotating arm body, which is far away from the non-circular gear assembly, is provided with a pre-tightening spring supported on the sliding block.
Compared with the prior art, the utility model, have following advantage: the utility model discloses variable non-circular gear processing utensil, simple structure, convenient to use can realize that simulation festival curve is the non-circular gear generation course of working of arbitrary shape, and the suitability is good, has stronger practicality and better application prospect.
Drawings
The contents of the drawings and the reference numerals in the drawings of the present specification will be briefly described as follows:
FIG. 1 is a three-dimensional structure diagram of the variable non-circular gear generating instrument of the present invention;
fig. 2 is a partial sectional view of the variable non-circular gear generating instrument of the present invention;
FIG. 3 is a three-dimensional structure diagram of the variable pitch curve non-circular gear shafting of the present invention;
labeled as: 1. the device comprises a rack, 2, a cutter component, 3, a non-circular gear component, 4, a rotating arm component, 5, a sliding block, 6 and a pre-tightening spring;
101. the device comprises a rack supporting leg 102, a bracket body 103, a first rolling bearing 104, a fixed supporting shaft 105 and a first fixing screw;
201. a cutter gear 202, a transmission gear 203, a cutter gear shaft 204, a first compression nut 205 and a second rolling bearing;
301. a non-circular gear blank 302, a flexible non-circular gear 303, a flexible non-circular gear bracket 304, a second compression nut 305, a movable compression block 306, a third rolling bearing 307, a second fixing screw 308, a screw rod 309 and a cover plate;
401. a swivel arm body 402, a fourth rolling bearing.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The utility model discloses a variable non-circular gear processing utensil, as shown in fig. 1, 2, including cutter unit 2 and adjustable non-circular gear assembly 3, cutter unit 2 below is equipped with the drive gear 202 with the 3 meshing of non-circular gear assembly, and 3 fixed connection of non-circular gear assembly are in frame 1, and cutter unit 2 leads to rocking arm subassembly 4 to rotate and connects in frame 1, is equipped with the slider 5 of 3 radial movement of non-circular gear assembly relatively on the rocking arm subassembly 4, and slider 5 is connected with cutter unit 2. By adjusting the non-circular gear component 3, generating machining of non-circular gear tooth profile curves with different shape pitch curves is realized, the transmission gear 202 on the sliding block moving adjustment control cutter component is always in meshed transmission with the non-circular gear component 3, and the cutter component 2 rotates around the non-circular gear component 3 through the rotating arm component 4.
In the utility model, the non-circular gear component 3 comprises a flexible non-circular gear bracket 303, a flexible non-circular gear 302 meshed with the transmission gear 202 is arranged in the flexible non-circular gear bracket 303, and a non-circular gear blank 301 is arranged on the flexible non-circular gear 302; the non-circular gear blank 301 is stationary and the cutter assembly is rotated to effect an enveloping motion with a pencil scribing a line on the non-circular gear blank 301 along the cutter gear tooth profile, thus cutting the non-circular gear profile. The non-circular gear blank 301 is installed on the flexible non-circular gear support 303, the upper end of the flexible non-circular gear support 303 is provided with a second compression nut 304, and the second compression nut 304 is installed on the flexible non-circular gear support 303 in a threaded mode so that the non-circular gear blank 301 can be detached, replaced and installed conveniently.
The utility model discloses in, as shown in fig. 3, flexible non-circular gear support 303 is polygon box body structure, and flexible non-circular gear 302 radially is equipped with multiunit adjusting part. The adjusting assembly comprises a screw rod 308 which is arranged on the flexible non-circular gear bracket 303 along the radial direction, and a movable pressing block 305 which is pressed on the inner side surface of the flexible non-circular gear 302 is connected to the screw rod 308 in a threaded mode. The screw 308 is rotated by a handle or a wrench, so that the position of the movable pressing block 305 on the screw 308 is adjusted, the pitch curve shape of the flexible central non-circular gear 302 is changed, the purpose of changing the pitch curve shape of the non-circular gear is achieved, and the requirement of simulating the non-circular gear generating method processing with different shapes is met. The two ends of the screw 308 are supported on the flexible non-circular gear bracket 303 through a third rolling bearing 306, and a cover plate 309 is mounted at the outer end of the flexible non-circular gear bracket 303 through a second fixing screw 307 to cover the outer third rolling bearing 306. The outer end of the screw 308 extends out for easy adjustment by a handle or a wrench.
In the utility model, as shown in fig. 2, frame 1 includes stake body 102, and stake body 102 periphery is equipped with frame stabilizer blade 101, is equipped with fixed stay shaft 104 on stake body 102, and fixed stay shaft 104 passes through first set screw 105 fixed mounting on stake body 102. The flexible non-circular gear bracket 303 is mounted and connected on the fixed support shaft 104. The inner hole of the hollow main shaft of the flexible non-circular gear bracket 303 is connected with the fixed supporting shaft 104 of the frame 1 through a flat key. The rotating arm assembly 4 is connected to the fixed support shaft 104 through a first rolling bearing 103, and a fourth rolling bearing 402 is arranged between the rotating arm assembly 4 and the upper flexible non-circular gear support 303 so as to ensure that the rotating arm assembly 4 drives the cutter assembly 2 to smoothly rotate around the non-circular gear assembly 3.
In the utility model, the cutter component 2 comprises a cutter gear 201, and the cutter gear 201 and the transmission gear 202 are coaxially arranged on a cutter gear shaft 203; the cutter gear shaft 203 is provided with a first compression nut 204 so as to facilitate replacement of the cutter gear 201 and simulate generation of gear profile tooth profiles with different modules.
The utility model discloses in, cutter gear shaft 203 is connected through second antifriction bearing 205 on the slider 5. A guide rod or a sliding groove for supporting the sliding block 5 is arranged on a rotating arm body 401 of the rotating arm assembly 4, the sliding block 5 can move along the guide rod or the sliding groove, and a pre-tightening spring 6 supported on the sliding block 5 is arranged at one end, far away from the non-circular gear assembly 3, of the rotating arm body 401. The change of the center distance between the two shafts of the cutter gear shaft 203 and the fixed supporting shaft 104 is realized through the sliding block 5 and the pre-tightening spring 6, the cutter gear shaft 203 is arranged on the sliding block 5 which can move along the radial direction of the flexible non-circular gear 302, and the pre-tightening spring 6 has the function of ensuring that the sliding block 5 can move in the radial direction and can also ensure the normal meshing between the flexible non-circular gear and the transmission gear 202.
The generating method course of working in this main analog reality of patent, its fundamental principle is similar with the roller gear generating method, when utilizing a pair of gear intermeshing, the gear profile curve is processed to the principle that conjugate tooth profile is the envelope each other. During machining, one round is a cutter, the other round is a non-circular gear blank 301, cutting movement of the cutter is realized, a pencil is used for marking a line on the non-circular gear blank 301 along the gear tooth profile of the cutter to realize enveloping movement, and therefore the contour of the non-circular gear is cut. For non-circular gear generation, the transmission ratio between the "cutter" wheel and the non-circular gear blank 301, as well as the center-to-center distance, is not constant, but varies according to a given law.
The mechanism motion is similar to the planetary gear transmission, namely, the non-circular gear blank 301 is fixed, and the cutter gear 201 performs planetary motion around the non-circular gear blank 301 under the driving of the rotating arm. The relative rotation between the cutter gear 201 and the non-circular gear blank 301 is realized by the relative rotation between the flexible non-circular gear 302 and the transmission gear 202 which are coaxial with the cutter gear, the change of the center distance between the two shafts is realized by the slide block 5 and the pre-tightening spring 6, the cutter gear shaft 203 is arranged on the slide block 5 which can move along the radial direction of the flexible non-circular gear 302, and the pre-tightening spring 6 has the function of ensuring that the slide block 5 can move along the radial direction and ensuring the normal meshing between the flexible non-circular gear and the transmission gear 202. The flexible non-circular gear 302 is made of flexible material, and the pitch curve shape of the flexible non-circular gear can be adjusted through a screw 308 transmission device, so that the generating machining simulation requirements of non-circular gears with different shapes can be met.
The experimental device provided by the utility model has a structure as shown in figures 1 and 2, and mainly comprises a frame 1, a cutter component 2, a non-circular gear component 3 and a rotary arm component 4. The frame 1 is fixed, and the inner hole of the hollow main shaft of the non-circular gear component 3 is connected with the fixed supporting shaft 104 of the frame 1 through a flat key, so that the cutter component 2 and the non-circular gear component 3 are circumferentially fixed with the frame 1. The rotating arm assembly 4 is mounted on a fixed supporting shaft 104 at the center of the frame 1 through a rolling bearing and can rotate around the central shaft of the frame 1. The swivel arm assembly 4 comprises a swivel arm body 401, a pre-tightening spring 6 and a slider 5 moving along a guide rod or a sliding groove on the swivel arm. The pre-tightening spring 6 ensures that the transmission center distance of the non-circular gear is variable and can be normally meshed. The slider 5 is provided with a cutter assembly 4, the cutter assembly 4 mainly comprises a transmission gear 202, a cutter gear 201 and a cutter gear shaft 203, and the cutter gear shaft 203 is provided with a first gland nut 204 which is convenient to disassemble so as to conveniently replace the cutter gear and simulate the profile tooth shapes of gears with different modules.
In order to realize generating machining of non-circular gear tooth profile curves with different shape pitch curves, the gear ring part of the flexible non-circular gear 302 is made of an easily deformable flexible material and is realized through a plurality of screw transmission mechanisms which are uniformly distributed along the radial direction of the non-circular gear (specifically, 8 screw transmission mechanisms are arranged according to the use condition), as shown in fig. 3. The screw 308 is rotated through a handle or a wrench, so that the position of the movable pressing block 305 on the screw 308 is adjusted, the pitch curve shape of the flexible non-circular gear 302 is changed, the purpose of changing the pitch curve shape of the non-circular gear is achieved, and the requirement of simulating the non-circular gear generating method processing with different shapes is met.
The experiment method for the variable noncircular gear processing tool of the utility model is that the tool is debugged and installed, the second gland nut 304 is unscrewed, and a piece of noncircular white paper with a middle hole is placed on the noncircular gear blank 301 and is fixed by the second gland nut 304; rotating the cutter assembly, marking on the white paper along the cutter gear curve by using a pencil, stopping and marking once after rotating for each small angle to form a tooth profile curve of the non-circular gear; loosening the second compression nut 304, taking out the white paper on which the gear tooth profile curve is drawn, and ending the experiment; if gear tooth profile curves with different pitch curves, different tooth numbers and different moduli need to be drawn, the tool gear is replaced by loosening the first gland nut 204, the screw rods at different positions are rotated, the shape of the flexible non-circular gear 302 is adjusted, and the experimental steps are repeated.
The utility model discloses this kind of variable non-circular gear processing utensil for generating method processing non-circular gear's experiment technical field, is a teaching experiment instrument that is used for non-circular gear flank profile generating experiment. The instrument can demonstrate the working principle and the forming process of machining the tooth profile of the gear by the pitch curve non-circular gear generating method in different shapes, thereby helping students to consolidate and master the basic principle of cutting the tooth profile curve of the non-circular gear by the generating method, and know the undercut phenomenon, and further deepening the understanding of machining the tooth profile curve of the non-circular gear by the generating method. By adopting the design scheme of the non-circular gear with the variable pitch curve, the universality of the non-circular gear generating instrument is greatly improved.
The utility model discloses variable non-circular gear processing utensil, simple structure, convenient to use can realize that simulation festival curve is the non-circular gear generation course of working of arbitrary shape, and the suitability is good, has stronger practicality and better application prospect.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention has been described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, and various insubstantial improvements or direct applications to other applications can be achieved by using the method and technical solution of the present invention, which all fall within the protection scope of the present invention.
Claims (10)
1. A variable non-circular gear machining tool, characterized in that: including cutter unit spare and adjustable non-circular gear assembly, cutter unit spare below be equipped with the drive gear of non-circular gear assembly meshing, non-circular gear assembly fixed connection is in the frame, cutter unit spare rotates through rocking arm subassembly to be connected in the frame, be equipped with on the rocking arm subassembly relatively non-circular gear assembly radial movement's slider, the slider with cutter unit spare is connected.
2. A variable non-circular gear machining apparatus according to claim 1 wherein: the non-circular gear assembly comprises a flexible non-circular gear support, a flexible non-circular gear meshed with the transmission gear is arranged in the flexible non-circular gear support, and a non-circular gear blank is arranged on the flexible non-circular gear; the non-circular gear blank is arranged on the flexible non-circular gear support, and a second compression nut is arranged at the upper end of the flexible non-circular gear support.
3. The variable non-circular gear machining apparatus of claim 2 wherein: the flexible non-circular gear support is of a polygonal box structure, and a plurality of groups of adjusting assemblies are arranged along the radial direction of the flexible non-circular gear.
4. A variable non-circular gear machining apparatus according to claim 3 wherein: the adjusting assembly comprises a screw rod which is arranged on the flexible non-circular gear support along the radial direction, and a movable pressing block which is pressed on the inner side surface of the flexible non-circular gear is connected to the screw rod in a threaded mode.
5. A variable non-circular gear machining apparatus according to claim 4 wherein: the rack comprises a rack body, rack support legs are arranged on the periphery of the rack body, and a fixed support shaft is arranged on the rack body.
6. A variable non-circular gear machining apparatus according to claim 5 wherein: the flexible non-circular gear bracket is mounted and connected on the fixed supporting shaft.
7. A variable non-circular gear machining apparatus according to claim 6 wherein: the rotating arm assembly is connected to the fixed supporting shaft through a first rolling bearing, and a fourth rolling bearing is arranged between the rotating arm assembly and the flexible non-circular gear support above the rotating arm assembly.
8. A variable non-circular gear machining apparatus according to claim 1 wherein: the cutter assembly comprises a cutter gear, and the cutter gear and the transmission gear are coaxially arranged on a cutter gear shaft; and a first compression nut is arranged on the cutter gear shaft.
9. A variable non-circular gear processing apparatus according to claim 8, wherein: the cutter gear shaft is connected to the sliding block through a second rolling bearing.
10. A variable non-circular gear machining apparatus according to any of claims 1 to 9 wherein: the rotating arm body of the rotating arm assembly is provided with a guide rod for supporting the sliding block, the sliding block can move along the guide rod, and one end of the rotating arm body, which is far away from the non-circular gear assembly, is provided with a pre-tightening spring supported on the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023107228.0U CN213935387U (en) | 2020-12-22 | 2020-12-22 | Variable non-circular gear machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023107228.0U CN213935387U (en) | 2020-12-22 | 2020-12-22 | Variable non-circular gear machining tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213935387U true CN213935387U (en) | 2021-08-10 |
Family
ID=77155070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023107228.0U Expired - Fee Related CN213935387U (en) | 2020-12-22 | 2020-12-22 | Variable non-circular gear machining tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213935387U (en) |
-
2020
- 2020-12-22 CN CN202023107228.0U patent/CN213935387U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210810 Termination date: 20211222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |