CN115234565A - Gear shaft structure with gradually changed diameter and production process thereof - Google Patents
Gear shaft structure with gradually changed diameter and production process thereof Download PDFInfo
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- CN115234565A CN115234565A CN202210830065.3A CN202210830065A CN115234565A CN 115234565 A CN115234565 A CN 115234565A CN 202210830065 A CN202210830065 A CN 202210830065A CN 115234565 A CN115234565 A CN 115234565A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 63
- 230000008859 change Effects 0.000 claims abstract description 25
- 238000013016 damping Methods 0.000 claims description 32
- 238000004512 die casting Methods 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 10
- 238000010168 coupling process Methods 0.000 abstract description 10
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- 238000005516 engineering process Methods 0.000 description 4
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- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
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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
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
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Abstract
The utility model relates to a gradual change footpath gear shaft structure, the technical field of gear shaft is related to, it is including gradually reducing the axostylus axostyle, drive gear, coupling assembling and spacing subassembly, the diameter at each position of gradual change footpath axostylus axostyle reduces along the length direction of gradual change footpath axostylus axostyle gradually, drive gear is provided with a plurality of, and each drive gear all adopts the mode of establishing to install on gradually reducing the axostylus axostyle by the cover and installs, coupling assembling sets up a plurality of groups, each group's coupling assembling all installs on gradually reducing the axostylus axostyle and be connected with each drive gear respectively, coupling assembling is used for avoiding drive gear and gradual change footpath axostylus axostyle to take place relative circumferential direction, spacing subassembly is provided with a plurality of groups, and each group respectively cooperates with coupling assembling, in order to avoid drive gear to take place relative radial movement for gradually reducing the footpath axostylus axostyle. This application improves unipolar multiple spot transmission formula gear shaft production efficiency's effect.
Description
Technical Field
The application relates to the technical field of gear shafts, in particular to a gradual-change-diameter gear shaft structure and a production process thereof.
Background
The gear shaft part is mainly used for supporting the rotary part, realizing rotary motion and transmitting torque and power. The gear shaft has a series of advantages of high transmission efficiency, compact structure, long service life and the like, and is one of important parts in general machinery, particularly engineering machinery transmission. The optimization of the gear shaft processing material, the heat treatment mode and the mechanical processing technological process has important reference significance for improving the processing quality and the service life of the gear shaft. The mechanical comprehensive performance requirement of the gear shaft part is high, and a forging is generally selected as a blank.
In the related technology, the gear shaft mainly comprises a shaft lever and a transmission gear, the transmission gear is sleeved on the outer wall of the shaft lever and is coaxially arranged with the shaft lever, the diameter requirement of the shaft lever is related to the external diameter requirement of the transmission gear, and normally, the larger the external diameter of the transmission gear is, the larger the diameter of the shaft lever needs to be, so that a certain reasonable range is reserved between the external diameter and the internal diameter of the transmission gear, and the integral strength of the transmission gear and the torsion resistance of the shaft lever are ensured.
In practical application, in mechanical equipment, because space restriction, the gear shaft often has the requirement of unipolar multiple spot transmission, and is concrete, sets up a plurality of drive gears on a axostylus axostyle for only need an axostylus axostyle can control many drive gear synchronous pivoted effects simultaneously, common like the gear box.
In view of the above-mentioned related technologies, the applicant has found that, when single-shaft multipoint transmission is adopted, the shaft rod is often divided into a plurality of sections of connecting sections along the length direction due to different sizes of the transmission gears, the connecting sections of the sections are directly reduced in sequence along the length direction of the shaft rod, and a stress concentration phenomenon occurs at a cross section at a joint of two adjacent connecting sections, so that the overall strength of the shaft rod is relatively low, the application conditions are always limited, and the conventional technology utilizes a material with higher strength to ensure the strength of the shaft rod, so that the problem of higher cost exists, and therefore improvement is needed.
Disclosure of Invention
The application aims to provide a gradual change footpath gear shaft structure and production technology thereof, and it has the effect that improves unipolar multiple spot transmission formula gear shaft production efficiency.
First aspect, the application provides a gradual change footpath gear shaft structure adopts following technical scheme:
the utility model provides a gradual change footpath gear shaft structure, includes gradually reducing axostylus axostyle and drive gear, the diameter at each position of gradual change footpath axostylus axostyle reduces along the length direction of gradual change footpath axostylus axostyle gradually, drive gear all adopts the mode of establishing to overlap to install on gradually reducing axostylus axostyle, be provided with the spacing subassembly that is used for restricting drive gear mounted position on gradually reducing axostylus axostyle.
Through adopting above-mentioned technical scheme, the diameter is along with length increase and the gradual change footpath axostylus axostyle that reduces gradually for traditional cascaded axostylus axostyle (being in the conventional art promptly, the axostylus axostyle that a plurality of linkage segments are constituteed), the bulk strength is higher, and can not produce the condition that cross sectional area reduces by a wide margin suddenly, consequently holistic bending strength can be higher for traditional cascaded axostylus axostyle, make the use of gradual change footpath axostylus axostyle safer, utilize spacing subassembly and drive gear cooperation, can realize the transmission function of gradual change footpath gear shaft structure.
Optionally, the outer wall of the gradually-changing diameter shaft rod is provided with a plurality of limiting grooves circumferentially arranged around the axis of the gradually-changing diameter shaft rod, the cross sections of all parts of each limiting groove are arranged in the same manner, the inner wall of the transmission gear is provided with a plurality of connecting protrusions, and each connecting protrusion extends into each limiting groove.
Through adopting above-mentioned technical scheme, through set up the joint protrusion on drive gear's inner wall, then corresponding spacing groove on the outer wall of gradual change footpath axostylus axostyle, through making the joint protrusion extend the spacing inslot, can make difficult relative circumferential direction that takes place between drive gear and the gradual change footpath axostylus axostyle.
Optionally, the connecting device further comprises a plurality of connecting blocks, one side of each connecting block is embedded in a limiting groove, a positioning groove is formed in one side, away from the axis of the shaft rod with the gradually-changing diameter, of each connecting block, each connecting protrusion is inserted into each positioning groove, and each connecting block is embedded in each limiting groove.
Through adopting above-mentioned technical scheme, utilize the cooperation between constant head tank and the connection arch, can realize the fixed connection between connecting block and the drive gear inner wall, then utilize the cooperation between connecting block and the spacing groove for drive gear can utilize connecting block and gradual change footpath shaft lever to be connected, utilize the connecting block can indirect increase drive gear and the area of being connected between the gradual change footpath shaft lever, make the connection between the two more firm, stable.
Optionally, each connect protruding the same and all be the isosceles trapezoid shape setting with each way constant head tank along the radial cross sectional shape of gradually reducing axostylus axostyle, each the area that connects the protruding one end that is close to gradually reducing axostylus axostyle is less than the area that connects the protruding one end of keeping away from gradually reducing axostylus axostyle.
Through adopting above-mentioned technical scheme, be the isosceles trapezoid shape through the cross-section that makes connection arch and constant head tank, can make connection arch insert more easily when initial and establish into the constant head tank, and along with the connecting block removes towards the direction of keeping away from the gradual change footpath axostylus axostyle axis, the connection between connection arch and the constant head tank can be inseparable more, finally ensures both firm in connection, stability.
Optionally, each the spacing groove all includes main groove and auxiliary tank, the cross-section of main groove is the rectangle and sets up, the auxiliary tank is provided with the twice and is located two long avris of main groove respectively, each the connecting block inlays the cross-section of locating the part of spacing inslot and sets up the same with the cross-section of spacing groove.
Through adopting above-mentioned technical scheme, the spacing groove that utilizes main tank and auxiliary tank to constitute lies in when the connecting block cooperates, can make connecting block and gradual change footpath axostylus axostyle initial connection also be difficult for taking place the separation, and each connecting block of being convenient for is installed on the gradual change footpath axostylus axostyle.
Optionally, when the connecting block is connected with the shaft rod with the gradually changing diameter through the limiting groove, each part on one side face, away from the shaft rod with the gradually changing diameter, of the connecting block is arranged at the same interval with the axis of the shaft rod with the gradually changing diameter, and when the transmission gear is tightly connected with the connecting block, the inner wall of the transmission gear is tightly attached to one side face, away from the axis of the shaft rod with the gradually changing diameter, of the connecting block.
By adopting the technical scheme, the connecting blocks are kept away from each part on one side face of the diameter-gradually-changing shaft rod and are arranged at the same interval between the axes of the diameter-gradually-changing shaft rod, so that the whole thickness of the joint of the transmission gear and the diameter-gradually-changing shaft rod is uniform, and the transmission gear is more stably installed.
Optionally, a filling groove is formed in an end face, close to the end with the smaller diameter, of each connecting block, each filling groove is communicated with one side face, close to the axis of the tapered shaft, of each connecting block, the limiting assembly comprises a plurality of rubber damping blocks, and each rubber damping block is embedded in each filling groove.
Through adopting above-mentioned technical scheme, through setting up the packing groove in the connecting block, then place rubber damping piece in packing the groove, can utilize rubber damping piece to play the effect of increasing friction for connecting between connecting block and the gradual change footpath axostylus axostyle is more stable, and is difficult for taking place to roll back the phenomenon.
Optionally, each all be provided with the first sawtooth line that extends along spacing groove length direction on the bottom surface of spacing groove, one side that connecting block and rubber damping piece are close to the reducing shaft axis all be provided with first sawtooth line complex second sawtooth line, each all be provided with a plurality of third sawtooth lines that extend along connecting block width direction on the bottom surface of filling the groove, each one side that the rubber damping piece deviates from the reducing shaft has with third sawtooth line complex fourth sawtooth line.
Through adopting above-mentioned technical scheme, utilize the cooperation between first sawtooth groove and the second sawtooth groove, can further increase the connection stability between connecting block and the gradual change footpath axle bar, utilize the cooperation between third sawtooth line and the fourth sawtooth line, can increase the connection stability between rubber damping piece and the connecting block.
In a second aspect, the present application provides a production process for the above-mentioned gear shaft structure with a gradually-varied diameter, which adopts the following technical solution.
A production process for the gradual-change-diameter gear shaft structure as described above, comprising the steps of:
s1, respectively forming a gradually-variable diameter shaft rod, a transmission gear and a connecting block by die casting through a die casting machine, and forming a rubber damping block by using an injection molding machine;
s2, polishing the surfaces of the shaft rod with the gradually changed diameter, the transmission gear and the connecting block by using polishing equipment, and detecting the surface precision of the polished shaft rod with the gradually changed diameter, the transmission gear and the connecting block;
s3, connecting the rubber damping block with the connecting block, then installing the connecting block on the gradually-variable-diameter shaft rod, and gradually moving the pushing piece connecting block to a specified position in a direction away from the axis of the gradually-variable-diameter shaft rod;
s4, preliminarily sleeving the transmission gear on the gradually-variable diameter shaft rod, and aligning each connecting bulge on the inner wall of the transmission gear to a positioning groove on each connecting block;
s5, continuously pushing each connecting block and each transmission gear to move towards the end with the larger diameter of the shaft rod with the gradually changed diameter, so that each connecting bulge is respectively inserted into each positioning groove until the transmission gear and the connecting blocks are completely clamped.
By adopting the technical scheme, the production of the gradually-changing shaft rod, the transmission gear, the connecting block and the rubber damping block is completed through the step S1, the surface precision of the gradually-changing shaft rod, the transmission gear and the connecting block is ensured by the step S2, the installation of the connecting block is primarily completed by the step S3, and the step S4 is utilized
In summary, the present application includes at least one of the following beneficial technical effects:
1. the cross section of a certain part of the gradually-variable-diameter shaft rod can be prevented from being greatly changed, and the phenomenon of local stress concentration of the shaft rod is avoided as much as possible;
2. the adaptability is high, the transmission gear mounting tool can be suitable for being mounted and used by transmission gears with different inner diameter requirements, and the transmission gear mounting tool better meets part of equipment with higher requirements;
3. the production efficiency is high, the die-casting forming mode can be adopted for production, the die-casting forming mode can be used for mass production in a plurality of production processes, the utilization rate is high, and the method is more economical.
Drawings
FIG. 1 is a schematic overall structure diagram of a tapered gear shaft structure according to an embodiment of the present application;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of the connection between the connection block and the tapered shaft according to the embodiment of the present application;
FIG. 4 is a schematic view of the connection between the connection block and the transfer gear of an embodiment of the present application;
FIG. 5 is a schematic view of the connection between the connection block and the rubber damping block of the embodiment of the present application.
In the figure, 1, a shaft rod with a gradually changed diameter; 11. a limiting groove; 111. a main tank; 112. a secondary groove; 113. a first sawtooth pattern; 2. a transmission gear; 21. perforating; 211. an avoidance groove; 22. a connecting projection; 3. a connecting assembly; 31. connecting blocks; 311. positioning a groove; 312. a second sawtooth line; 313. filling the groove; 314. a third saw-tooth pattern; 4. a limiting component; 41. a rubber damping block; 411. and a fourth sawtooth pattern.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The utility model provides a gradual change footpath gear shaft structure, refer to figure 1, this gradual change footpath gear shaft structure is including reducing the axostylus axostyle 1 gradually, drive gear 2, coupling assembling 3 and spacing subassembly 4, the diameter at 1 each position of reducing the axostylus axostyle gradually reduces along the length direction of reducing the axostylus axostyle 1 gradually, drive gear 2 is provided with a plurality of, and each drive gear 2 all adopts the mode of establishing to install on reducing the axostylus axostyle 1 gradually, coupling assembling 3 sets up a plurality of groups, each group coupling assembling 3 all installs on reducing the axostylus axostyle 1 gradually and is connected with each drive gear 2 respectively, coupling assembling 3 is used for avoiding drive gear 2 and reducing the relative circumferential direction of axle 1 emergence of axle, spacing subassembly 4 is provided with a plurality of groups, and each group of limiting component 4 cooperates with coupling assembling 3 respectively, in order to avoid drive gear 2 to take place relative radial movement for reducing the axostylus axostyle 1 gradually.
Referring to fig. 2, a plurality of limiting grooves 11 are arranged on the shaft rod 1 with the gradually changing diameter at equal intervals around the axis of the shaft rod 1 with the gradually changing diameter, the cross sections of the positions of the limiting grooves 11 are arranged in the same way, the width of each position where each limiting groove 11 is communicated with the outer surface of the shaft rod 1 with the gradually changing diameter is arranged in the same way, and two ends of each limiting groove 11 are respectively communicated with two end faces of the shaft rod 1 with the gradually changing diameter; each limiting groove 11 comprises a main groove 111 and an auxiliary groove 112, the cross section of the main groove 111 is rectangular, the auxiliary groove 112 is provided with two grooves which are respectively located on two long side sides of the main groove 111, and the bottom surface of each limiting groove 11 is provided with a first sawtooth pattern 113 extending along the length direction of the limiting groove 11.
In the embodiment of the present application, a schematic state diagram when three limiting grooves 11 are provided is specifically disclosed.
Referring to fig. 1 and 3, the connecting assembly 3 includes a plurality of connecting blocks 31, one side of each connecting block 31 is installed in the gradually-variable-diameter shaft rod 1 through each limiting groove 11, the other side of each connecting piece extends out of the gradually-variable-diameter shaft rod 1, the part of each connecting block 31 extending into the limiting groove 11 is arranged in the same way as the cross section of the limiting groove 11, the number of the connecting blocks 31 corresponds to the number of the limiting grooves 11 one by one, a positioning groove 311 with an isosceles trapezoid-shaped cross section is arranged on one side of each connecting block 31 away from the gradually-variable-diameter shaft rod 1, and the positioning groove 311 is located in the middle of one side of each connecting block 31 away from the gradually-variable-diameter shaft rod 1; the area of the end of the positioning groove 311 close to the axis of the gradually changing diameter shaft lever 1 is smaller than the area of the end of the positioning groove 311 far away from the axis of the gradually changing diameter shaft lever 1.
Wherein, each connecting block 31 has second sawtooth line 312 on being close to the side of gradually reducing axostylus axostyle 1, when connecting block 31 is installed on gradually reducing axostylus axostyle 1, the second sawtooth line 312 that is located on connecting block 31 is identical mutually with the 113 way of first sawtooth line that is located on spacing groove 11, can increase the area of contact between connecting block 31 and the gradually reducing axostylus axostyle 1 through the cooperation between 113 ways of first sawtooth line and the second sawtooth line 312, make the connection between the two more stable.
Referring to fig. 1 and 4, a through hole 21 for the tapered shaft rod 1 to penetrate through is formed in the middle of the transmission gear 2, a plurality of connecting protrusions 22 are arranged on the inner wall of the through hole 21 and circumferentially and equidistantly distributed around the axis of the transmission gear 2, the number and positions of the limiting grooves 11 of the connecting protrusions 22 correspond to one another, and the shape and size of the connecting protrusions 22 correspond to the shape and size of the positioning grooves 311; when the transmission gear 2 is tightly connected with the connecting assembly 3, each connecting protrusion 22 is respectively embedded in the positioning groove 311 of each connecting block 31, and the inner wall of the transmission gear 2 is attached to one side surface of each connecting block 31, which is far away from the axis of the gradually-variable shaft rod 1.
When the connecting blocks 31 forming one group of connecting assemblies 3 are synchronously arranged on the gradually-changing shaft rod 1, the distances between the parts of one side surface of each connecting block 31, which is far away from the gradually-changing shaft rod 1, and the axis of the gradually-changing shaft rod 1 are the same; the outer wall of the shaft rod 1 with the gradually changing diameter is tightly attached to the through hole 21 of the transmission gear 2, the inner wall of the transmission gear 2 is provided with a plurality of avoiding grooves 211 which are circumferentially distributed around the axis of the transmission gear 2, and the connecting protrusions 22 are respectively positioned in the avoiding grooves 211.
Referring to fig. 5, each connecting block 31 is provided with a filling groove 313, the filling groove 313 is communicated with one end surface of the connecting block 31, the filling groove 313 is communicated with one side surface of the connecting block 31 close to the axis of the gradually-changing shaft rod 1, and when the connecting block 31 is mounted on the gradually-changing shaft rod 1, each filling groove 313 is located at a position of the connecting block 31 close to one end of the gradually-changing shaft rod 1 with a smaller diameter; the limiting component 4 comprises a plurality of rubber damping blocks 41, and each rubber damping block 41 is embedded in each filling groove 313 to realize connection between the limiting component 4 and the connecting component 3.
When the rubber damping block 41 is preliminarily installed on the filling groove 313 and the connecting piece is positioned on the gradually-changing shaft rod 1 for connection, the rubber damping block 41 partially extends out of one side of the connecting piece close to the axis of the gradually-changing shaft rod 1, so that when the connecting piece is installed on the gradually-changing shaft rod 1, the rubber damping block 41 can deform due to extrusion, and the connection strength between the rubber damping block 41 and the gradually-changing shaft rod 1 is improved; wherein, have second sawtooth line 312 on each rubber damping piece 41 side near the reducing shaft lever 1, when the connecting block 31 is installed on reducing shaft lever 1, the second sawtooth line 312 that is located on rubber damping piece 41 is identical with the first sawtooth line 113 way that is located on spacing groove 11 each other.
Wherein, all be provided with a plurality of third sawtooth lines 314 that extend along connecting block 31 width direction on the bottom surface of each groove 313 of packing, the one side that deviates from gradually reducing shaft lever 1 at each rubber damping piece 41 has the fourth sawtooth line 411 way with third sawtooth line 314 complex, when rubber damping piece 41 is connected with connecting block 31, the third sawtooth line 314 that is located the groove 313 of packing is identical with the fourth sawtooth line 411 way that is located the rubber damping piece 41 each other.
The implementation principle of the embodiment of the application is as follows:
the distance between the surface of the gradually-changing diameter shaft lever 1 and the axis of the gradually-changing diameter shaft lever 1 is linearly changed along with the length position of the gradually-changing diameter shaft lever 1, and then the distance between each part of the through hole 21 of the transmission gear 2 and the axis of the transmission gear 2 is always kept unchanged, so when each connecting block 31 forming the connecting assembly 3 is connected with the inner wall of the transmission gear 2, the distance between each connecting block 31 and the axis of the transmission gear 2 is fixed, at the moment, if each connecting block 31 forming the connecting assembly 3 is installed on the gradually-changing diameter shaft lever 1, the connecting assembly 3 and the transmission gear 2 can be pushed to move along the larger diameter end of the gradually-changing diameter shaft lever 1 until each connecting block 31 is clamped with the gradually-changing diameter shaft lever 1, thereby positioning connection between the transmission gear 2 and the gradually-changing diameter shaft lever 1 is realized, cooperation between each rubber damping block 41 forming the limiting assembly 4 and each connecting block 31 is utilized, the connecting block 31 can enable the connecting block 31 to be difficult to move back towards the smaller diameter end of the gradually-changing diameter shaft lever 1, and use safety of the transmission gear 2 is ensured.
The application also discloses a production process for the gradual change diameter gear shaft structure, which comprises the following steps:
s1, respectively forming a gradually-variable diameter shaft lever 1, a transmission gear 2 and a connecting block 31 by die casting through a die casting machine, and forming a rubber damping block 41 by using an injection molding machine;
s2, polishing the surfaces of the shaft rod 1 with the gradually changed diameter, the transmission gear 2 and the connecting block 31 by using polishing equipment, and detecting the surface precision of the shaft rod 1 with the gradually changed diameter, the transmission gear 2 and the connecting block 31 after polishing;
s3, connecting the rubber damping block 41 with the connecting block 31, then installing the connecting block 31 on the gradually-variable diameter shaft rod 1, and gradually moving the pushing piece connecting block 31 to a specified position in a direction away from the axis of the gradually-variable diameter shaft rod 1;
s4, preliminarily sleeving the transmission gear 2 on the gradually-variable diameter shaft rod 1, and aligning each connecting bulge 22 on the inner wall of the transmission gear 2 to the positioning groove 311 on each connecting block 31 respectively;
s5, continuously pushing each connecting block 31 and the transmission gear 2 to move towards the end with the larger diameter of the gradually-variable shaft rod 1, so that each connecting protrusion 22 is respectively inserted into each positioning groove 311 until the transmission gear 2 and the connecting block 31 are completely clamped.
The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a gradual change footpath gear shaft structure, its characterized in that, includes gradually reducing axostylus axostyle (1) and drive gear (2), the diameter at each position of gradually reducing axostylus axostyle (1) reduces along the length direction of gradually reducing axostylus axostyle (1) gradually, drive gear (2) all adopt the mode of establishing to overlap to install on gradually reducing axostylus axostyle (1), be provided with spacing subassembly (4) that are used for restricting drive gear (2) mounted position on gradually reducing axostylus axostyle (1).
2. The gear shaft structure with the gradually changing diameter as claimed in claim 1, wherein a plurality of limiting grooves (11) circumferentially arranged around the axis of the shaft (1) with the gradually changing diameter are formed in the outer wall of the shaft (1), the cross sections of all parts of each limiting groove (11) are arranged in the same manner, a plurality of connecting protrusions (22) are formed in the inner wall of the transmission gear (2), and each connecting protrusion (22) extends into each limiting groove (11).
3. The gear shaft structure with the gradually changing diameter as claimed in claim 2, further comprising a plurality of connecting blocks (31), wherein one side of each connecting block (31) is embedded in the limiting groove (11), one side of each connecting block (31) away from the axis of the shaft (1) with the gradually changing diameter is provided with a positioning groove (311), each connecting protrusion (22) is respectively inserted into each positioning groove (311), and each connecting block (31) is respectively embedded in each limiting groove (11).
4. The gear shaft structure with gradually changing diameters as set forth in claim 3, wherein each of said connecting protrusions (22) has the same cross-sectional shape as each of said positioning grooves (311) along the radial direction of the shaft (1) with gradually changing diameters and is formed in an isosceles trapezoid shape, and the area of the end of each of said connecting protrusions (22) close to the shaft (1) with gradually changing diameters is smaller than the area of the end of each of said connecting protrusions (22) away from the shaft (1) with gradually changing diameters.
5. The gear shaft structure with the gradually changed diameters as set forth in claim 3, wherein each of said limiting grooves (11) comprises a main groove (111) and an auxiliary groove (112), the cross section of said main groove (111) is arranged in a rectangular shape, said auxiliary groove (112) is arranged in two rows and is respectively located on both long sides of said main groove (111), and the cross section of the portion of each of said connecting blocks (31) embedded in said limiting groove (11) is arranged in the same manner as the cross section of said limiting groove (11).
6. The gear shaft structure with the gradually changing diameter as claimed in claim 3, wherein when the connecting block (31) is connected to the shaft (1) with the gradually changing diameter through the limiting groove (11), each part of one side surface of the connecting block (31) away from the shaft (1) with the gradually changing diameter is arranged at the same distance from the axis of the shaft (1) with the gradually changing diameter, and when the transmission gear (2) is tightly connected to the connecting block (31), the inner wall of the transmission gear (2) is tightly attached to one side surface of the connecting block (31) away from the axis of the shaft (1) with the gradually changing diameter.
7. The gear shaft structure with the gradually changing diameter as claimed in claim 3, wherein a filling groove (313) is formed in an end surface of each connecting block (31) close to the end with the smaller diameter of the shaft (1) with the gradually changing diameter, each filling groove (313) is communicated with one side surface of each connecting block (31) close to the axis of the shaft (1) with the gradually changing diameter, the limiting assembly (4) comprises a plurality of rubber damping blocks (41), and each rubber damping block (41) is embedded in each filling groove (313).
8. The gear shaft structure with the gradually changing diameter as claimed in claim 7, wherein a first sawtooth line (113) extending along the length direction of the limiting groove (11) is arranged on the bottom surface of each limiting groove (11), a second sawtooth line (312) matched with the first sawtooth line (113) is arranged on one side surface of the connecting block (31) and the rubber damping block (41) close to the axis of the gradually changing diameter shaft rod (1), a plurality of third sawtooth lines (314) extending along the width direction of the connecting block (31) are arranged on the bottom surface of each filling groove (313), and a fourth sawtooth line (411) matched with the third sawtooth line (314) is arranged on one side of each rubber damping block (41) departing from the gradually changing diameter shaft rod (1).
9. A production process for a progressive gear shaft structure according to any one of claims 1 to 8, comprising the steps of:
s1, respectively forming a gradually-variable diameter shaft lever (1), a transmission gear (2) and a connecting block (31) by die-casting through a die-casting machine, and forming a rubber damping block (41) by an injection molding machine;
s2, polishing the surfaces of the tapered diameter shaft rod (1), the transmission gear (2) and the connecting block (31) by using polishing equipment, and detecting the surface precision of the polished tapered diameter shaft rod (1), the transmission gear (2) and the connecting block (31);
s3, connecting the rubber damping block (41) with the connecting block (31), then installing the connecting block (31) on the gradually-variable diameter shaft rod (1), and gradually moving the pushing piece connecting block (31) to a specified position in a direction away from the axis of the gradually-variable diameter shaft rod (1);
s4, preliminarily sleeving the transmission gear (2) on the gradually-variable diameter shaft rod (1), and aligning each connecting bulge (22) on the inner wall of the transmission gear (2) to a positioning groove (311) on each connecting block (31) respectively;
s5, continuously pushing the connecting blocks (31) and the transmission gear (2) to move towards the end, with the larger diameter, of the gradually-variable diameter shaft lever (1), so that the connecting protrusions (22) are respectively inserted into the positioning grooves (311) until the transmission gear (2) and the connecting blocks (31) are completely clamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210830065.3A CN115234565A (en) | 2022-07-15 | 2022-07-15 | Gear shaft structure with gradually changed diameter and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210830065.3A CN115234565A (en) | 2022-07-15 | 2022-07-15 | Gear shaft structure with gradually changed diameter and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115234565A true CN115234565A (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210830065.3A Pending CN115234565A (en) | 2022-07-15 | 2022-07-15 | Gear shaft structure with gradually changed diameter and production process thereof |
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| Country | Link |
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| CN (1) | CN115234565A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06254371A (en) * | 1992-08-06 | 1994-09-13 | Isamu Goto | Overhang type agitation shaft for high speed rotation |
| JP2001248711A (en) * | 2000-03-06 | 2001-09-14 | Toshiba Tec Corp | Gear-shaft structure |
| JP2013024289A (en) * | 2011-07-19 | 2013-02-04 | Aisin Ai Co Ltd | Lubricating device of selective gear type transmission |
| CN203756866U (en) * | 2014-03-28 | 2014-08-06 | 杭州嘉和减速机有限公司 | Worm gear speed reducer |
| CN107906112A (en) * | 2017-12-13 | 2018-04-13 | 泰州里华齿轮制造有限公司 | A kind of special high intensity lubricating type gear assembly connection axis |
| KR20210021900A (en) * | 2020-04-29 | 2021-03-02 | 정종훈 | Shaft for electric vehicle |
-
2022
- 2022-07-15 CN CN202210830065.3A patent/CN115234565A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06254371A (en) * | 1992-08-06 | 1994-09-13 | Isamu Goto | Overhang type agitation shaft for high speed rotation |
| JP2001248711A (en) * | 2000-03-06 | 2001-09-14 | Toshiba Tec Corp | Gear-shaft structure |
| JP2013024289A (en) * | 2011-07-19 | 2013-02-04 | Aisin Ai Co Ltd | Lubricating device of selective gear type transmission |
| CN203756866U (en) * | 2014-03-28 | 2014-08-06 | 杭州嘉和减速机有限公司 | Worm gear speed reducer |
| CN107906112A (en) * | 2017-12-13 | 2018-04-13 | 泰州里华齿轮制造有限公司 | A kind of special high intensity lubricating type gear assembly connection axis |
| KR20210021900A (en) * | 2020-04-29 | 2021-03-02 | 정종훈 | Shaft for electric vehicle |
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