Rotary table direct drive device for gear hobbing machine

Abstract

The utility model relates to the field of gear hobbing machines, in particular to a rotary table direct drive device for a gear hobbing machine, which comprises a base, a rotary groove is arranged on the outer wall of the top of the base, a shaft hole is arranged at the center of the outer wall of the top of the base, a drive groove is arranged at the center of the outer wall of the bottom of the base, and a drive motor is arranged on the base in the drive groove. A cooling groove is formed in the outer wall of the bottom of the base, a cooling structure is installed on the base and located in the cooling groove, a rotating disc structure is arranged at the center of the outer wall of the top of the base, and supporting blocks distributed at equal intervals are welded to the bottom of the outer wall of the side edge of the base. The cooling structure comprises two partition plates which are installed on the base and located in the cooling groove. The circulating pump pumps oil liquid in the cooling tank and conveys the oil liquid into the driving tank, the oil liquid is transmitted to the outside through the heat conduction fins, cooling liquid is cooled, the driving motor is cooled circularly, and high-speed operation stability is guaranteed conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of gear hobbing machines, in particular to a turntable direct-driving device for gear hobbing machines. Background Art

[0002] Gear hobbing machines are the most widely used gear processing machines. They can cut spur and helical cylindrical gears, as well as worm wheels and sprockets. Traditional gear hobbing machines use a worm gear transmission as the worktable structure. This structure has high requirements for the precision of the worm gear and the assembly and installation, so the overall manufacturing cost is relatively high.

[0003] During use, since the worm gear requires lubricating oil, if the oil is cut off, the worm gear will be worn, causing damage to the turntable accuracy; the worm gear transmission is relatively large, so the speed is limited and cannot adapt to high-speed rotation, thus affecting the processing efficiency of the gear hobbing machine. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problems and shortcomings and propose a turntable direct drive device for a gear hobbing machine: the driving motor drives the rotating disk to rotate through the main shaft, and drives the transmission shaft to rotate through the rotating disk, and adopts a direct drive method to solve the problems of traditional transmission wear and inability to rotate at high speed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A turntable direct drive device for a gear hobbing machine comprises a base, a rotating groove is provided on the top outer wall of the base, and an axial hole is provided at the center of the top outer wall of the base, a driving groove is provided at the center of the bottom outer wall of the base, and a driving motor is installed in the driving groove of the base, a cooling groove is provided on the bottom outer wall of the base, and a cooling structure is installed inside the cooling groove of the base, a turntable structure is provided at the center of the top outer wall of the base, and support blocks equidistantly distributed are welded to the bottom of the side outer wall of the base; the cooling structure comprises two partition plates installed on the base in the cooling groove and a circulating pump installed in the cooling groove between the two partition plates; the turntable structure comprises a rotating disk with a main shaft installed on the top outer wall of the main shaft.

[0007] Preferably, the input end of the circulation pump is connected to a filter cartridge, and the other end of the filter cartridge is connected to a pumping pipe, the other end of the pumping pipe is connected to the other end of the partition plate, the output end of the circulation pump is connected to the driving groove, and a cylindrical filter screen is placed on the inner wall of the filter cartridge.

[0008] Preferably, the outer wall of the base is provided with heat-conducting fins in the cooling groove, and the base is provided with a water outlet pipe between the driving groove and the cooling groove, and a one-way valve is provided at one end of the water outlet pipe.

[0009] Preferably, sealing plates are sealedly installed on the outer wall of the bottom of the base at the cooling groove and the driving groove, and one end of the heat-conducting fin extends outside the base.

[0010] Preferably, the top outer wall of the rotating disk is provided with equidistantly distributed assembly holes, and the outer wall of the main shaft is provided with equidistantly distributed sealing grooves, and sealing rings are sleeved in the sealing grooves.

[0011] Preferably, the main shaft is rotatably connected to the outer wall of the shaft hole, and the output shaft of the driving motor is connected to the bottom end of the main shaft, the top outer wall of the base is located in the rotating groove and a bearing is installed, and the bottom outer wall of the rotating disk is slidably connected to the top outer wall of the bearing.

[0012] Preferably, a blocking ring is installed on the bottom outer wall of the rotating disk, and a hidden ring is sleeved on the top side outer wall of the base, and threaded holes distributed at equal distances are opened on the hidden ring and the outer wall of the base.

[0013] Preferably, the driving motor and the circulating pump are connected to a switch via a wire, and the switch is connected to a power source via a wire.

[0014] The beneficial effects of the utility model are:

[0015] 1. The driving motor drives the rotating disk to rotate through the main shaft, and drives the transmission shaft to rotate through the rotating disk. It adopts direct drive mode to solve the problems of traditional transmission wear and high speed.

[0016] 2. The circulating pump extracts the oil in the cooling tank and transports it to the driving tank, and then transfers it to the outside through the heat-conducting fins to dissipate the coolant. The circulating pump dissipates the heat of the driving motor to ensure high-speed operation stability.

[0017] 3. When the rotating disk rotates, the blocking ring at the bottom cooperates with the hidden ring on the base to block the gap between the rotating disk and the base to prevent impurities from entering and ensure operational stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a rotary table direct drive device for a gear hobbing machine proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the top structure of a rotary table direct drive device for a gear hobbing machine proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the expanded structure of a turntable direct drive device for a gear hobbing machine proposed by the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the bottom structure of a turntable direct drive device for a gear hobbing machine.

[0022] In the figure: 1 base, 2 shaft hole, 3 main shaft, 4 rotating disk, 5 bearing, 6 driving groove, 7 driving motor, 8 cooling groove, 9 cooling structure, 10 blocking ring, 11 threaded hole, 12 hidden ring, 13 assembly hole, 14 support block, 15 partition plate, 16 circulating pump, 17 filter cartridge, 18 water outlet pipe, 19 thermal fin, 20 sealing plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Embodiment 1:

[0025] Reference Figure 1-4 A turntable direct drive device for a gear hobbing machine comprises a base 1, a rotating groove is formed on the top outer wall of the base 1, and an axial hole 2 is formed at the center of the top outer wall of the base 1, a driving groove 6 is formed at the center of the bottom outer wall of the base 1, and a driving motor 7 is installed in the driving groove 6 of the base 1, a cooling groove 8 is formed on the bottom outer wall of the base 1, and a cooling structure 9 is installed inside the cooling groove 8 of the base 1, a turntable structure is formed at the center of the top outer wall of the base 1, and support blocks 14 distributed at equal distances are welded to the bottom of the side outer wall of the base 1;

[0026] A blocking ring 10 is installed on the bottom outer wall of the rotating disk 4, and a hidden ring 12 is sleeved on the top side outer wall of the base 1, and the hidden ring 12 and the outer wall of the base 1 are both provided with threaded holes 11 distributed at equal distances. When the rotating disk 4 rotates, the blocking ring 10 at the bottom cooperates with the hidden ring 12 on the base 1 to block the gap between the rotating disk 4 and the base 1 to prevent impurities from entering and ensure operational stability;

[0027] The outer wall of the bottom of the base 1 is sealed with a sealing plate 20 at the cooling groove 8 and the driving groove 6, and one end of the heat conducting fin 19 extends to the outside of the base 1;

[0028] The turntable structure includes a main shaft 3 and a rotating disk 4 mounted on the top outer wall of the main shaft 3;

[0029] The top outer wall of the rotating disk 4 is provided with equidistantly distributed assembly holes 13, and the outer wall of the main shaft 3 is provided with equidistantly distributed sealing grooves, each of which is sleeved with a sealing ring. The sealing ring on the main shaft 3 ensures that the coolant entering the driving groove 6 will not leak from the shaft hole 2, thereby ensuring the running stability;

[0030] The main shaft 3 is rotatably connected to the outer wall of the shaft hole 2, and the output shaft of the driving motor 7 is connected to the bottom end of the main shaft 3. The top outer wall of the base 1 is located in the rotating groove and a bearing 5 is installed thereon, and the bottom outer wall of the rotating disk 4 is slidably connected to the top outer wall of the bearing 5.

[0031] The driving motor 7 and the circulating pump 16 are connected to the switch through wires, and the switch is connected to the power supply through wires. The driving motor 7 drives the rotating disk 4 to rotate through the main shaft 3, and drives the transmission shaft to rotate through the rotating disk 4. Direct drive is adopted to solve the problems of traditional transmission wear and high speed.

[0032] Embodiment 2:

[0033] Reference Figure 2-4 The cooling structure 9 includes two partition plates 15 installed on the base 1 and located in the cooling groove 8, and a circulating pump 16 installed in the cooling groove 8 and located between the two partition plates 15. The circulating pump 16 extracts the oil in the cooling groove 8 and delivers it to the driving groove 6. The heat of the driving motor 7 is transferred to the coolant. The coolant returns to the cooling groove 8 through the outlet pipe 18. The temperature in the cooling groove 8 is transferred to the outside through the heat-conducting fins 19. The circulation dissipates heat for the driving motor 7, so as to ensure the stability of high-speed operation.

[0034] The input end of the circulation pump 16 is connected to a filter cartridge 17, and the other end of the filter cartridge 17 is connected to a water pump, the other end of the water pump is connected to the other end of the partition plate 15, the output end of the circulation pump 16 is connected to the driving groove 6, and a cylindrical filter screen is placed on the inner wall of the filter cartridge 17. The cylindrical filter screen inside the filter cartridge 17 filters the circulating coolant to ensure the cleanliness of the coolant;

[0035] The outer wall of the base 1 is a cooling groove 8 with heat-conducting fins 19 installed, and the base 1 is installed with a water outlet pipe 18 between the driving groove 6 and the cooling groove 8, and a one-way valve is installed at one end of the water outlet pipe 18. The one-way valve on the water outlet pipe 18 prevents the coolant from flowing back and ensures circulation.

[0036] Working principle: When in use, the whole replaces the traditional drive mode, install one end of the transmission shaft of the gear hobbing machine at the center of the rotating disk 4, and install the base 1 in the equipment through the support blocks 14 distributed at equal distances. First, add coolant to the cooling tank 8 of the base 1. When in use, the drive motor 7 and the circulating pump 16 in the drive tank 6 are started, and the drive motor 7 drives the rotating disk 4 to rotate through the main shaft 3, and drives the transmission shaft to rotate through the rotating disk 4. The direct drive mode is adopted to solve the problems of wear and tear of the traditional transmission and the inability to rotate at high speed; after the drive motor 7 is directly driven, it can rotate at high speed. A large amount of heat will be generated in the rotating state. At this time, the circulating pump 16 draws the oil in the cooling tank 8 and transports it to the driving tank 6. The filter cylinder 17 filters the drawn coolant. Then the oil contacts the driving motor 7 in the driving tank 6. The heat of the driving motor 7 is transferred to the coolant. The coolant returns to the cooling tank 8 through the outlet pipe 18. The temperature in the cooling tank 8 is transferred to the outside through the heat-conducting fins 19. The outside air flows through the heat-conducting fins 19 to dissipate the heat of the coolant. The circulation dissipates the heat for the driving motor 7, which is convenient for ensuring the stability of high-speed operation.

[0037] The exemplary implementation of the utility model is described in detail with reference to the examples, however, it is understood by those skilled in the art that, without departing from the concept of the utility model, various modifications and alterations may be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the utility model may be made without exceeding the scope of protection of the utility model, which is determined by the attached claims. The foregoing description of the specific exemplary implementation of the utility model is not intended to limit the utility model to the precise form disclosed, and it is obvious that many changes and variations can be made according to the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary implementations of the utility model and various different choices and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A rotary table direct drive device for a gear hobbing machine, comprising a base (1), characterized in that: The top outer wall of the base (1) is provided with a rotating groove, and the center of the top outer wall of the base (1) is provided with an axial hole (2); the center of the bottom outer wall of the base (1) is provided with a driving groove (6), and the base (1) is provided with a driving motor (7) installed in the driving groove (6); the bottom outer wall of the base (1) is provided with a cooling groove (8), and the base (1) is provided with a cooling structure (9) installed inside the cooling groove (8); a turntable structure is provided at the center of the top outer wall of the base (1), and support blocks (14) distributed at equal distances are welded to the bottom of the side outer wall of the base (1); The cooling structure (9) comprises two partition plates (15) installed on the base (1) and located in the cooling groove (8), and a circulation pump (16) installed in the cooling groove (8) and located between the two partition plates (15); The turntable structure comprises a main shaft (3) and a rotating disk (4) mounted on the outer wall of the top of the main shaft (3).

2. A rotary table direct drive device for a gear hobbing machine according to claim 1, characterized in that: The input end of the circulation pump (16) is connected to a filter cartridge (17), and the other end of the filter cartridge (17) is connected to a water pumping pipe, the other end of the water pumping pipe is connected to the other end of the partition plate (15), the output end of the circulation pump (16) is connected to the driving groove (6), and a cylindrical filter screen is placed on the inner wall of the filter cartridge (17).

3. A rotary table direct drive device for a gear hobbing machine according to claim 1, characterized in that: The outer wall of the base (1) is provided with a heat-conducting fin (19) in the cooling groove (8), and the base (1) is provided with a water outlet pipe (18) between the driving groove (6) and the cooling groove (8), and a one-way valve is provided at one end of the water outlet pipe (18).

4. A rotary table direct drive device for a gear hobbing machine according to claim 1, characterized in that: The outer wall of the bottom of the base (1) is sealed with a sealing plate (20) at the cooling groove (8) and the driving groove (6), and one end of the heat conducting fin (19) extends to the outside of the base (1).

5. The rotary table direct drive device for a gear hobbing machine according to claim 1, characterized in that: The top outer wall of the rotating disk (4) is provided with equidistantly distributed assembly holes (13), and the outer wall of the main shaft (3) is provided with equidistantly distributed sealing grooves, each of which is sleeved with a sealing ring.

6. A rotary table direct drive device for a gear hobbing machine according to claim 1, characterized in that: The main shaft (3) is rotatably connected to the outer wall of the shaft hole (2), and the output shaft of the driving motor (7) is connected to the bottom end of the main shaft (3). The top outer wall of the base (1) is located in the rotating groove and is equipped with a bearing (5), and the bottom outer wall of the rotating disk (4) is slidably connected to the top outer wall of the bearing (5).

7. A rotary table direct drive device for a gear hobbing machine according to claim 1, characterized in that: A blocking ring (10) is installed on the bottom outer wall of the rotating disk (4), and a hidden ring (12) is sleeved on the top side outer wall of the base (1), and threaded holes (11) distributed at equal distances are opened on the hidden ring (12) and the outer wall of the base (1).

8. The rotary table direct drive device for a gear hobbing machine according to claim 1, characterized in that: The driving motor (7) and the circulating pump (16) are connected to a switch via a wire, and the switch is connected to a power source via a wire.

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