CN216555226U

CN216555226U - Small-modulus high-precision helical gear of micro gear box

Info

Publication number: CN216555226U
Application number: CN202123410070.9U
Authority: CN
Inventors: 王一飞; 王留锁
Original assignee: Changzhou Sanheng Machinery Co ltd
Current assignee: Changzhou Sanheng Machinery Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-17
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to the technical field of gears, in particular to a small-modulus high-precision helical gear of a micro gear box, which solves the problem that the gears are seriously damaged in use because the transmission shaft and the gears can rotate relatively after being used for a long time due to the fact that the gears and the transmission shaft are generally connected through screws in the prior art. The utility model provides a high-accuracy helical gear of little modulus of micro-gear case, includes transmission shaft and gear body, the skin weld of transmission shaft has the fixed axle with gear body size looks adaptation, the fixed surface mounting of fixed axle has three dead lever, the surface of dead lever is provided with two movable blocks, the lateral wall activity of movable block runs through there is first bolt. According to the utility model, the gear body is conveniently fixed on the transmission shaft by the fixed shaft through the arrangement of the fixed shaft, the fixed rod, the movable block, the first bolt and the second bolt, so that the possibility of relative rotation between the transmission shaft and the gear body is reduced.

Description

Small-modulus high-precision helical gear of micro gear box

Technical Field

The utility model relates to the technical field of gears, in particular to a small-modulus high-precision helical gear of a miniature gear box.

Background

The gear is a mechanical element with a rim on which the gear is continuously meshed to transmit motion and power, the gear is applied in transmission for a long time, at the end of the 19 th century, the principle of generating a gear cutting method and the successive appearance of a special machine tool and a cutter for cutting the gear by using the principle are realized, and the running stability of the gear is emphasized along with the development of production.

The traditional gear needs to be fixedly connected with the transmission shaft in use, but the connection mode generally adopts screw connection, so that after long-term use, the transmission shaft and the gear can rotate relatively, and the gear is seriously damaged in use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small-modulus high-precision helical gear of a micro gearbox, which solves the problem that the gear is seriously damaged in use because the transmission shaft and the gear can relatively rotate after being used for a long time as the gear and the transmission shaft are generally connected by screws in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a high-accuracy helical gear of little modulus of micro-gear case, includes transmission shaft and gear body, the skin weld of transmission shaft has the fixed axle with gear body size looks adaptation, the fixed surface of fixed axle installs three dead lever, the surface of dead lever is provided with two movable blocks, the lateral wall activity of movable block runs through there is first bolt, the surface rotation of movable block runs through there is the second bolt, the spacing groove with dead lever size looks adaptation is seted up on the surface of gear body.

Preferably, the surface of the fixed rod is provided with an elongated slot, the surface of the elongated slot is provided with two vertical slots, the two movable blocks are respectively in sliding connection with the two vertical slots, and the depth of the elongated slot is matched with the size of the movable block.

Preferably, the side wall of the gear body is provided with a threaded hole matched with the first bolt in size.

Preferably, the surface of the second bolt is threadedly coupled to the vertical groove.

Preferably, the movable block is of an L-shaped structure, and the first bolt and the second bolt are respectively located on the side wall and the surface of the movable block.

Preferably, the hollow bin is arranged inside the fixed shaft, the two ends of the fixed shaft are provided with the heat dissipation holes, the fan blades are uniformly and fixedly arranged inside the hollow bin of the fixed shaft, and the heat conduction rods are uniformly and fixedly arranged on the surface of the gear body.

Preferably, the heat conducting rods are radially distributed on two side walls of the gear body.

The utility model has at least the following beneficial effects:

when in use, the limiting groove on the surface of the gear body is aligned with the fixed rod on the surface of the fixed shaft, the movable block in the long groove is rotated by the second bolt, the second bolt drives the movable block to move into the vertical groove, the movable block can not extend out of the long groove, at the moment, the gear body is sleeved on the surface of the fixed shaft, the second bolt is rotated reversely again after being sleeved, the second bolt drives the movable block to extend out of the long groove, at the moment, the first bolt is connected with the threaded hole on the surface of the gear body in a threaded manner, so that the gear body is fixed on the fixed shaft, the position of the gear body is limited by the two movable blocks, when the transmission shaft drives the gear body to rotate, the transmission shaft drives the fixed shaft to rotate firstly, the fixed shaft is matched with the limiting groove on the surface, so that the gear body rotates, the fixed shaft and the fixed shaft are of an integrated structure, and the strength and the hardness are high, the relative rotation condition that utilizes screwed connection to drive between gear body and the transmission shaft is reduced to stability when reinforcing gear body operation.

The utility model also has the following beneficial effects:

carry out work on the gear body installation transmission shaft, the gear body can generate heat at the operation in-process, long-term high temperature can influence the life of gear body, heat conduction pole this moment is on heat conduction to the fixed axle, utilize the inside dead bin of fixed axle and louvre to mutually support, conveniently strengthen the inside circulation of air of fixed axle, dead bin internally mounted has the flabellum, when the fixed axle rotates, the flabellum also can rotate, further strengthen the speed of circulation of air around, conveniently strengthen the radiating effect of gear body.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the gear body structure of the present invention;

FIG. 3 is a schematic view of a stationary shaft according to the present invention;

FIG. 4 is a schematic view of the empty bin structure of the present invention;

FIG. 5 is a schematic view of a fan blade according to the present invention.

In the figure: 1. a drive shaft; 2. a gear body; 3. a fixed shaft; 4. fixing the rod; 5. a long groove; 6. a vertical slot; 7. a first bolt; 8. a movable block; 9. a second bolt; 10. a threaded hole; 11. a limiting groove; 12. a heat conducting rod; 13. heat dissipation holes; 14. a fan blade; 15. and (5) emptying the bin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-5, a high-precision helical gear with a small modulus for a micro gear box comprises a transmission shaft 1 and a gear body 2, wherein the surface of the transmission shaft 1 is welded with a fixed shaft 3 matched with the size of the gear body 2, three fixed rods 4 are fixedly arranged on the surface of the fixed shaft 3, two movable blocks 8 are arranged on the surface of the fixed rod 4, a first bolt 7 penetrates through the side wall of each movable block 8 in a movable manner, a second bolt 9 penetrates through the surface of each movable block 8 in a rotatable manner, and a limit groove 11 matched with the size of the fixed rod 4 is formed in the surface of the gear body 2.

The scheme has the following working processes:

when the gear is used, the limiting groove 11 on the surface of the gear body 2 is aligned with the fixed rod 4 on the surface of the fixed shaft 3, the movable block 8 in the long groove 5 is rotated by the second bolt 9, the second bolt 9 drives the movable block 8 to move into the vertical groove 6, the movable block 8 does not extend out of the long groove 5, the gear body 2 is sleeved on the surface of the fixed shaft 3, the second bolt 9 is rotated reversely again after being sleeved, the second bolt 9 drives the movable block 8 to extend out of the long groove 5, the first bolt 7 is in threaded connection with the threaded hole 10 on the surface of the gear body 2, so that the gear body 2 is fixed on the fixed shaft 3, the position of the gear body is limited by the two movable blocks 8, when the transmission shaft 1 drives the gear body 2 to rotate, the transmission shaft 1 drives the fixed shaft 3 to rotate, the fixed shaft 3 utilizes the fixed rod 4 on the surface to be matched with the limiting groove 11, so that the gear body 2 rotates, as an organic whole structure between dead lever 4 and the fixed axle 3, intensity high rigidity is big, reduces the relative pivoted condition that utilizes screwed connection to drive between gear body 2 and the transmission shaft 1 to stability when reinforcing gear body 2 operates.

According to the working process, the following steps are known:

through setting up fixed axle 3, dead lever 4, movable block 8, first bolt 7 and second bolt 9, conveniently utilize fixed axle 3 to fix gear body 2 on transmission shaft 1, reduce the relative pivoted possibility between transmission shaft 1 and the gear body 2.

Furthermore, the surface of the fixed rod 4 is provided with an elongated slot 5, the surface of the elongated slot 5 is provided with two vertical slots 6, the two movable blocks 8 are respectively in sliding connection with the two vertical slots 6, and the depth of the elongated slot 5 is matched with the size of the movable block 8.

Further, the side wall of the gear body 2 is provided with a threaded hole 10 matched with the first bolt 7 in size.

Further, the surface of the second bolt 9 is threadedly coupled to the vertical groove 6.

Further, the movable block 8 is of an L-shaped structure, and the first bolt 7 and the second bolt 9 are respectively located on the side wall and the surface of the movable block 8.

Further, the hollow bin 15 is arranged inside the fixing shaft 3, the heat dissipation holes 13 are formed in the two ends of the fixing shaft 3, the fan blades 14 are uniformly and fixedly arranged inside the hollow bin 15 of the fixing shaft 3, and the heat conduction rods 12 are uniformly and fixedly arranged on the surface of the gear body 2.

Further, the heat conducting rods 12 are radially distributed on two side walls of the gear body 2.

In summary, in use, the limiting groove 11 on the surface of the gear body 2 is aligned with the fixed rod 4 on the surface of the fixed shaft 3, the movable block 8 inside the elongated slot 5 is rotated by the second bolt 9, so that the second bolt 9 drives the movable block 8 to move into the vertical slot 6, so that the movable block 8 does not extend out of the elongated slot 5, at this time, the gear body 2 is sleeved on the surface of the fixed shaft 3, the second bolt 9 is rotated reversely again after being sleeved, the second bolt 9 drives the movable block 8 to extend out of the elongated slot 5, at this time, the first bolt 7 is in threaded connection with the threaded hole 10 on the surface of the gear body 2, so that the gear body 2 is fixed on the fixed shaft 3, the position of the gear body is limited by the two movable blocks 8, when the transmission shaft 1 drives the gear body 2 to rotate, the transmission shaft 1 drives the gear body 3 to rotate, and the fixed shaft 3 uses the fixed rod 4 on the surface to be matched with the limiting groove 11, thereby the gear body 2 rotates, the fixed rod 4 and the fixed shaft 3 are of an integral structure, the strength and the hardness are high, the relative rotation between the gear body 2 and the transmission shaft 1 driven by screw connection is reduced, the stability of the gear body 2 in operation is enhanced, the fixed shaft 3, the fixed rod 4, the movable block 8, the first bolt 7 and the second bolt 9 are arranged, the gear body 2 is conveniently fixed on the transmission shaft 1 by the fixed shaft 3, the possibility of relative rotation between the transmission shaft 1 and the gear body 2 is reduced, the gear body 2 is arranged on the transmission shaft 1 to work, the gear body 2 can generate heat in the operation process, the service life of the gear body 2 can be influenced by long-term high temperature, at the moment, the heat conducting rod 12 conducts the heat to the fixed shaft 3, the hollow bin 15 and the heat dissipation hole 13 in the fixed shaft 3 are mutually matched, and the air circulation in the fixed shaft 3 is conveniently enhanced, the fan blades 14 are arranged inside the empty bin 15, and when the fixing shaft 3 rotates, the fan blades 14 can also rotate, so that the speed of air circulation around is further increased, and the heat dissipation effect of the gear body 2 is conveniently enhanced.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high-accuracy helical gear of little modulus of micro-gear case, includes transmission shaft (1) and gear body (2), its characterized in that, the skin weld of transmission shaft (1) has fixed axle (3) with gear body (2) size looks adaptation, the fixed surface of fixed axle (3) installs three dead lever (4), the surface of dead lever (4) is provided with two movable block (8), the lateral wall activity of movable block (8) is run through and is had first bolt (7), the surface rotation of movable block (8) is run through and is had second bolt (9), spacing groove (11) with dead lever (4) size looks adaptation are seted up on the surface of gear body (2).

2. The micro gearbox small module high precision helical gear according to claim 1, wherein the surface of the fixed rod (4) is provided with an elongated slot (5), the surface of the elongated slot (5) is provided with two vertical slots (6), the two movable blocks (8) are respectively connected with the two vertical slots (6) in a sliding manner, and the depth of the elongated slot (5) is matched with the size of the movable block (8).

3. The micro gearbox small-modulus high-precision helical gear according to claim 1, wherein a threaded hole (10) matched with the first bolt (7) in size is formed in the side wall of the gear body (2).

4. The micro-gearbox small-modulus high-precision helical gear according to claim 1, wherein the surface of the second bolt (9) is in threaded connection with the vertical groove (6).

5. The micro gearbox small module high precision helical gear according to claim 1, wherein the movable block (8) is of an "L" shape, and the first bolt (7) and the second bolt (9) are respectively located on the side wall and the surface of the movable block (8).

6. The micro gearbox small-modulus high-precision helical gear according to claim 1, wherein an empty bin (15) is formed inside the fixed shaft (3), heat dissipation holes (13) are formed in both ends of the fixed shaft (3), fan blades (14) are uniformly and fixedly mounted inside the empty bin (15) of the fixed shaft (3), and heat conduction rods (12) are uniformly and fixedly mounted on the surface of the gear body (2).

7. The micro-gearbox small-modulus high-precision helical gear according to claim 6, wherein the heat conducting rods (12) are radially distributed on two side walls of the gear body (2).