CN211901469U

CN211901469U - Transmission structure for wood lathe

Info

Publication number: CN211901469U
Application number: CN202020103514.0U
Authority: CN
Inventors: 魏大椿
Original assignee: Minchuen Electrical Machinery Co ltd
Current assignee: Minchuen Electrical Machinery Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-11-10
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to a wood lathe transmission structure, which mainly changes the traditional belt transmission structure into a gear transmission structure. A speed-changing shaft is arranged between a transmission shaft and a driven shaft which are respectively provided with gear sets, and the positions of the gear sets on the speed-changing shaft are controlled by a speed-changing adjusting deflector rod through arranging the gear sets with different sizes on the speed-changing shaft and the driven shaft, so that the effects of meshing different gears and allocating different transmission speeds and neutral gears are achieved.

Description

Transmission structure for wood lathe

Technical Field

The utility model relates to a wood lathe transmission structure, in particular to a structure for changing a wood lathe into gear transmission.

Background

Checking the working principle of a wood lathe: the workpiece to be machined is driven to rotate by the lathe spindle, and various rotating bodies are machined and manufactured by using a cutter. Since the workpiece to be machined is different in material and required shape and requires different cutting force, different torque and rotation speed need to be provided through a transmission mechanism. The existing wood lathe designs a belt pulley into a multi-stage cone pulley mechanism, transmits the torque force of a motor to the belt pulley through a belt, and adjusts the position of the belt on the corresponding cone pulley by changing the transmission ratio of the motor pulley and the belt pulley to obtain different torques and rotating speeds.

However, when the belt position is adjusted by the existing wood lathe, two hands are required to act for several times, and the operation process is as follows: and opening a sealing cover of the transmission mechanism, loosening the motor wheel fixing device, adjusting the position of the motor wheel by one hand, and further adjusting the tension of the belt and the height position of the motor after adjusting the belt to a target belt cone pulley by the other hand to ensure that the belt groove is matched with the belt pulley groove and the proper belt tension.

The above-described structure and operation, in fact, have the following drawbacks:

(1) when different materials are to be drilled, different rotating speeds and torque forces need to be matched, when the rotating speed of the drilling hole is to be changed, the sealing cover of the transmission mechanism needs to be opened, the belt is spread by hands, and the rotating speed is changed by sleeving the belt cone pulleys with different sizes, so that the use is troublesome.

(2) Because the length of the belt is fixed, the change range of the transmission ratio is limited, and the motor may need to be started at a low rotating speed during adjustment, so that the belt is brought into the belt wheel by rotating the belt wheel, and fingers are still positioned between the belt wheel and the belt at the moment, so that safety accidents of work are easy to occur.

(3) The belt is used for connecting the motor wheel with the belt cone pulley for transmission, the transmission efficiency is low, the belt can slip under the condition of large low-speed operation torsion, the belt needs to be replaced if the belt is loosened, the belt belongs to a consumable product with high elimination rate, and the maintenance cost is high.

(4) In summary, the process of adjusting the torque and the rotating speed of the existing wood lathe is complicated, dangerous and time-consuming.

SUMMERY OF THE UTILITY MODEL

The utility model aims to improve the existing defects and provide an improved transmission structure of a wood lathe.

In order to achieve the above object, the utility model provides a wood lathe transmission structure, wherein, contains:

a housing, which is sequentially provided with a transmission shaft, a speed change shaft and a driven shaft;

a transmission gear assembled on the transmission shaft;

a driven gear, which is assembled at one end of the speed changing shaft and is meshed with the transmission gear;

a third gear and a fourth gear are coaxially fixed to form a second gear set, the second gear set is arranged on the driven shaft, the driven shaft is linked with the chuck, and the diameters of the third gear and the fourth gear are different;

a seventh gear and an eighth gear coaxially fixed to form a fourth gear set, the diameters of which are respectively corresponding to the third gear and the fourth gear, and the fourth gear and the seventh gear are assembled on one side of the speed change shaft close to the second gear set;

and the second speed change adjusting deflector rod is assembled between the seventh gear and the eighth gear, can enable the fourth gear set to move left and right, and controls the seventh gear to be meshed with the third gear or the eighth gear to be meshed with the fourth gear.

In the transmission structure of the wood lathe, the second speed-changing and shift lever enables the fourth gear set to move in three stages, and controls the seventh gear to be meshed with the third gear, or the eighth gear to be meshed with the fourth gear, or neither of the seventh gear and the eighth gear is meshed with the fourth gear.

In the aforementioned wood lathe transmission structure, the second gearshift lever assembly is disposed on a second gearshift device, and the second gearshift device includes:

the second positioning disc is fixedly locked on a panel, the panel is fixedly locked on the shell, a through hole is formed in the middle of the second positioning disc, and at least two grooves are formed in the lower end of the second positioning disc;

the second turntable is assembled outside the second positioning disk;

one end of the second fixed shaft is fixedly locked on the second turntable, and the other end of the second fixed shaft penetrates through the through hole of the second positioning disc and is fixedly locked with the second variable speed adjusting deflector rod into a whole;

a second positioning rod, which is assembled on the second turntable, the front end of the second positioning rod is assembled with a steel ball, the middle part is assembled with a spring, and the spring supports the steel ball, so that the steel ball can extend and contract and can support the groove.

In an embodiment of the present invention, the fourth gear set further includes a ninth gear, the ninth gear is disposed beside the seventh gear, and is coaxially fixed and displaceable with the seventh gear and the eighth gear, and the fourth gear set further includes:

the second speed changing shaft is arranged beside the speed changing shaft and the driven shaft;

a tenth gear and an eleventh gear respectively arranged at two ends of the second speed changing shaft, wherein the tenth gear can be meshed with the ninth gear, and the eleventh gear is meshed with the fourth gear;

the second variable speed shift lever further makes the fourth gear set shift one more section on the basis of the original three-section, and the fourth gear set is divided into four-section shift, and the seventh gear is controlled to be meshed with the third gear, or the eighth gear is meshed with the fourth gear, or neither gear is meshed, or the ninth gear is meshed with the tenth gear.

In the transmission structure of the wood lathe, the transmission gear can be changed into a first gear set formed by coaxially fixing a first gear and a second gear;

the driven gear can be changed into a third gear set which is coaxially and fixedly formed by a fifth gear and a sixth gear, and the diameters of the third gear set correspond to the first gear and the second gear respectively; and also comprises

And the first speed change adjusting deflector rod is assembled between the fifth gear and the sixth gear, can enable the third gear set to move left and right, and controls the fifth gear to be meshed with the first gear or the sixth gear to be meshed with the second gear.

In the transmission structure of the wood lathe, the first speed changing and shifting lever enables the third gear set to move in three stages, and controls the sixth gear to be meshed with the second gear, or the fifth gear to be meshed with the first gear, or neither of the sixth gear and the fifth gear is meshed with the first gear.

In the aforementioned wood lathe transmission structure, the first gearshift lever assembly is disposed on a first gearshift device, and the first gearshift device includes:

the first positioning disc is locked on a panel, the panel is locked on the shell, a through hole is formed in the middle of the first positioning disc, and at least two grooves are formed in the lower end of the first positioning disc;

a first turntable, which is assembled outside the first positioning disk;

one end of the first fixed shaft is locked on the first rotating disc, and the other end of the first fixed shaft penetrates through the through hole of the first positioning disc and is locked with the first variable speed adjusting lever into a whole;

a first positioning rod assembled on the first rotary disc, a steel ball assembled at the front end of the first positioning rod, a spring assembled in the middle, the spring abutting against the steel ball to make the steel ball telescopic and abutting against the groove.

The utility model has the advantages that: provides a transmission structure of a wood lathe, which changes the traditional belt transmission structure into a gear transmission structure. A speed-changing shaft is arranged between a transmission shaft and a driven shaft which are respectively provided with gear sets, and the positions of the gear sets on the speed-changing shaft are controlled by a speed-changing adjusting deflector rod through arranging the gear sets with different sizes on the speed-changing shaft and the driven shaft, so that the effects of meshing different gears and allocating different transmission speeds and neutral gears are achieved.

Drawings

Fig. 1 is a side view of the present invention.

Fig. 2 is an exploded perspective view of the present invention.

Fig. 3 is a side sectional view of the present invention.

Fig. 4 is a top cross-sectional view of the present invention.

Fig. 5 is a diagram of a first embodiment of the present invention.

Fig. 6 is a diagram of a second embodiment of the present invention.

Fig. 7 is a diagram of a third embodiment of the present invention.

Fig. 8 is a diagram of a fourth embodiment of the present invention.

Fig. 9 is a diagram of a fifth embodiment of the present invention.

Fig. 10 is a diagram of a sixth embodiment of the present invention.

Fig. 11 is a diagram of a seventh embodiment of the present invention.

Description of reference numerals:

10 casing

11 drive shaft

12 speed changing shaft

13 driven shaft

14 Panel

15 second speed change shaft

210 drive gear

211 first gear

212 second gear

21 first gear set

221 third gear

222 fourth gear

22 second gear set

230 driven gear

231 fifth gear

232 sixth gear

23 third gear set

241 seventh gear

242 eighth gear

243 ninth gear

24 fourth gear set

251 tenth gear

252 eleventh gear

30 first speed changing device

31 first variable speed shift lever

32 first positioning disk

320 perforation

321. 421 groove

33 first rotating disk

34 first fixed shaft

35 first positioning rod

351. 451 steel ball

352. 452 spring

40 second transmission

41 second variable speed shift lever

42 second positioning disk

420 perforation

43 second turntable

44 second fixed shaft

45 second positioning rod.

Detailed Description

Referring to fig. 1 to 8, the present invention relates to a transmission structure of a wood lathe, which is mainly provided with a transmission shaft 11, a speed changing shaft 12 and a driven shaft 13 in sequence on a housing 10;

a first gear 211 and a second gear 212 are coaxially fixed to form a first gear set 21, the first gear set 21 is disposed on the transmission shaft 11 and directly driven by a motor, and the diameters of the first gear 211 and the second gear 212 are different;

a third gear 221 and a fourth gear 222 are coaxially fixed to form a second gear set 22, the second gear set 22 is disposed on the driven shaft 13, the driven shaft 13 is linked with the chuck, and the third gear 221 and the fourth gear 222 have different diameters;

a fifth gear 231 and a sixth gear 232 coaxially fixed to form a third gear set 23, the diameters of which are respectively corresponding to the first gear 211 and the second gear 212, and are assembled on the side of the transmission shaft 12 close to the first gear set 21;

a first shift lever 31, assembled between the fifth gear and the

sixth gears

231, 232, for shifting the third gear set 23 left and right to control the engagement between the fifth gear 231 and the first gear 211, or the engagement between the sixth gear 232 and the second gear 212, or neither;

a seventh gear 241 and an eighth gear 242 coaxially fixed to form a fourth gear set 24, the diameters of which are respectively corresponding to the third gear 221 and the fourth gear 222, and are assembled on the side of the transmission shaft close to the second gear set 22;

a second shift lever 41, assembled between the seventh gear and the

eighth gear

241, 242, can shift the fourth gear set 24 left and right to control the seventh gear 241 to engage with the third gear 221, or the eighth gear 242 to engage with the fourth gear 222, or neither.

According to the present invention, the first and second

shift adjusting levers

31 and 41 can shift the third and fourth gear sets 23 and 24, respectively, so that the first and second shift adjusting levers can be controlled by the first and second

speed changing devices

30 and 40, respectively. The first transmission 30 includes: a first positioning plate 32 locked to a panel 14 locked to the housing 10, the first positioning plate having a through hole 320 in the middle; a first turntable 33 assembled outside the first positioning plate 32; a first fixed shaft 34, one end of which is fixed to the first rotating disc 33 and the other end of which passes through the through hole 320 of the first positioning disc 32, and is fixed to the first shift lever 31. When the first rotary plate 33 is rotated, the first gearshift lever 31 is linked to rotate, so that the third gear set 23 is shifted left and right. Wherein the second transmission 40 includes: a second positioning plate 42 locked on the panel 14, the second positioning plate 42 having a through hole 420 in the middle; a second turntable 43 assembled outside the second positioning plate 42; a second fixed shaft 44, one end of which is fixed to the second rotating disc 43 and the other end of which passes through the through hole 420 of the second positioning disc 42, and is fixed to the second shift lever 41. When the second rotary disc 43 is rotated, the second gearshift lever 41 is linked to rotate, so that the fourth gear set 24 is shifted left and right.

In order to adjust and control the positions of the third and fourth gear sets 23, 24 more precisely and to enable the gear sets to be meshed properly, the lower ends of the first and

second positioning discs

32, 42 are respectively provided with at least two

grooves

321, 421; a first positioning rod 35 assembled on the first rotary table 33, a second positioning rod 45 assembled on the second rotary table 43; the first and

second positioning rods

35, 45 are respectively provided with a

steel ball

351, 451 at the front end, and a

spring

352, 452 at the middle, wherein the

spring

352, 452 abuts against the

steel ball

351, 451, so that the

steel ball

351, 451 can slightly extend and retract and can just abut against the

groove

321, 421. When the first and second

rotary discs

33, 43 rotate to make the

steel balls

351, 451 correspond to the

grooves

321, 421, the impact sound is generated and the friction force is changed to prompt the user to stop rotating. The positioning effect is achieved by presetting the position of each groove.

According to the structure, the following effects and advantages can be obtained:

(1) the utility model discloses during rotatory variable speed control device's carousel, can the position of interlock adjustment gear train, change chuck pivoted speed and torsion, it is safer and convenient in the use.

(2) The utility model discloses first, second

speed change gear

30, 40 can be through setting up three

recess

321, 421 respectively for first,

second transfer pole

31, 41 fall into syllogic control third,

fourth gear train

23, 24 displacement, except that four kinds of different speeds of can allotting, still can have the neutral gear, convenient maintenance.

(3) The gear is used for connecting the speed change gear and the driven gear for transmission, so that the transmission efficiency is higher, the service life is longer, the loss is less, and the maintenance cost is lower.

Referring to fig. 9, according to the concept of the present invention, a set of transmission devices can be simplified and reduced, the original set of the transmission shaft 11 is provided with a first gear set 21, and can be changed to be provided with a transmission gear set 210, the original set of the transmission shaft 12 is provided with a third gear set 23, and can be changed to be provided with a driven gear 230, and the transmission gear 210 and the driven gear 230 are engaged with each other. Although two stages of speed and torque can be adjusted only by the second transmission 40, if a dc motor is used, more speed can be adjusted by adjusting the rotation speed of the motor.

Referring to fig. 10 and 11, according to the present invention, in the case of only one set of speed changing device, a ninth gear 243 may be further disposed beside the seventh gear 241 and coaxially fixed with the seventh and

eighth gears

241, 242, and further comprising: a second speed-changing shaft 15 disposed beside the speed-changing shaft 12 and the driven shaft 13; a tenth gear 251 and an eleventh gear 252 respectively disposed at two ends of the second transmission shaft 15, wherein the tenth gear 251 can be engaged with the ninth gear 243, and the eleventh gear 252 can be engaged with the fourth gear 222; the second shift lever 41 can further shift the fourth gear set 24 by one more stage based on the original three-stage shift, and divide the shift into four stages, so as to control the seventh gear 241 to engage with the third gear 221, or the eighth gear 242 to engage with the fourth gear 222, or neither gear nor gear, or the ninth gear 243 to engage with the tenth gear 251.

The above description is only one of the preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited accordingly; rather, the scope of the invention is to be accorded the full scope of the claims so as to embrace all such equivalent variations and modifications.

Claims

1. A kind of wood lathe drive structure, characterized by that, comprising:

a transmission gear assembled on the transmission shaft;

2. The transmission structure of the wood-turning lathe as claimed in claim 1, wherein the second shift lever makes the fourth gear set move in three stages to control the seventh gear to mesh with the third gear, or the eighth gear to mesh with the fourth gear, or neither.

3. The transmission structure of the wood lathe as claimed in claim 2, wherein the second shift lever assembly is disposed in a second transmission device, the second transmission device comprising:

the second turntable is assembled outside the second positioning disk;

4. The wood lathe transmission structure as claimed in claim 3,

this fourth gear train still is equipped with a ninth gear, and this ninth gear is located by this seventh gear, with this seventh gear, the coaxial fixed displacement of eighth gear to still contain:

5. The wood lathe transmission structure as claimed in claim 3,

the transmission gear can be changed into a first gear set formed by coaxially fixing a first gear and a second gear;

6. The transmission structure of wood-turning lathe as claimed in claim 5, wherein the first shift lever makes the third gear set move in three stages to control the sixth gear to mesh with the second gear, or the fifth gear to mesh with the first gear, or neither.

7. The transmission structure of the wood lathe as claimed in claim 6, wherein the first shift lever assembly is disposed in a first speed changing device, the first speed changing device comprising:

a first turntable, which is assembled outside the first positioning disk;