A milling head backlash elimination mechanism

Abstract

The utility model discloses a milling head clearance eliminating mechanism, comprising a driving shaft arranged inside a gear box body, a mounting block being fixed to an outer wall of one side of the driving shaft by screws, a mounting groove being provided at the axis center of the mounting block, a milling cutter being fixed to an inner wall of the mounting groove by bolts, a first driving gear and a second driving gear being connected to both ends of the outer wall of the driving shaft, and a helical gear being connected to one end of one side of the driving shaft; in the process of chip cutting of large-modulus gears, the clearance eliminating mechanism can realize slow pushing of the helical gear by continuously changing the metering of hydraulic oil inside the hydraulic cylinder, thereby performing axial displacement, that is, in the process of subsequent cutting processing, the internal buffer hydraulic oil can eliminate the transmission clearance in the gear box, make the milling cutter cut more smoothly, reduce the influence of the reverse force on the tool, thereby prolonging the service life of the milling cutter and improving the cutting accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, in particular to a milling head clearance eliminating mechanism. Background Art

[0002] Large modulus gear is a type of gear commonly used in wind power gear projects. It is characterized by large tooth width, large number of teeth, and large tooth surface width. This type of gear is usually used in heavy-load, high-speed transmission and some special projects. Large modulus gears have a larger tooth width and can withstand greater loads and torques, making them suitable for high-load transmission. In addition, large modulus gears have a large number of teeth, which can improve the stability and accuracy of transmission and reduce vibration and noise. However, during the production and processing of large modulus gears, due to the particularity of the tooth groove, the tooth processing efficiency is low during the processing process, and the quality of the processed products is poor.

[0003] Poor cutting accuracy. When cutting large modulus gears, there is a gap inside the gear box, so there will be a certain vibration during the milling cutter processing, causing the milling cutter to vibrate and cause vibration, which will affect the service life of the tool and increase the cost of the tool. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a milling head backlash eliminating mechanism.

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

[0006] A milling head clearance eliminating mechanism comprises a driving shaft arranged inside a gear housing, a mounting block being fixed to an outer wall of one side of the driving shaft by screws, and a mounting groove being provided at the axis center of the mounting block, a milling cutter being fixed to an inner wall of the mounting groove by bolts, and a first driving gear and a second driving gear being connected to both ends of the outer wall of the driving shaft, a helical gear being connected to an end portion of one side of the driving shaft, and a coupling being arranged on an outer wall of one side of the helical gear, a rotating bearing being sleeved on an outer wall of the coupling away from the helical gear, and an end of the coupling being fixed to the inside of the housing by a nut.

[0007] As a further solution of the utility model: the outer wall of the driving shaft on one side of the first driving gear is connected to the synchronous wheel, and the motor driving pulley drives the first shaft system to rotate through the connection of the synchronous belt, thereby realizing the rotation of the box.

[0008] As a further solution of the utility model: a cylinder sleeve is inserted into the inner axis of the shell, and the outer wall of the cylinder sleeve is fixed to the shell by bolts.

[0009] As a further solution of the utility model: a cylinder connecting plate is arranged at the end of the cylinder sleeve, and a cylinder cover plate is fixed to the side of the cylinder connecting plate, and retraction positioning blocks are arranged at both ends of the outer wall of the cylinder cover plate.

[0010] As a further solution of the utility model: one side of the oil cylinder sleeve is connected to an oil pipe, and the oil pipe is connected to hydraulic oil.

[0011] As a further solution of the utility model: the axis of the drive shaft and the axes of the helical gear, the coupling, the rotary bearing, the housing and the cylinder sleeve are all located on the same straight line.

[0012] Compared with the prior art, the utility model provides a milling head backlash elimination mechanism, which has the following beneficial effects:

[0013] The milling head clearance eliminating mechanism of this design can realize the slow pushing of the helical gear and the axial displacement by continuously changing the hydraulic oil metering inside the hydraulic cylinder during the chip processing of large-modulus gears. That is, in the subsequent cutting process, through the control of the hydraulic system, when a gap appears in the rotation of the gear during the cutting process, the cylinder moves slightly to push the helical gear to move axially, thereby realizing the radial rotation of the helical gear and eliminating the gear side clearance, making the milling cutter cutting more stable, and reducing the influence of the reverse force on the tool, thereby extending the service life of the milling cutter and improving the cutting accuracy.

[0014] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a milling head backlash elimination mechanism proposed by the utility model;

[0016] Figure 2 It is a partial structural enlarged schematic diagram of a milling head backlash elimination mechanism proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the split structure of a milling head backlash elimination mechanism proposed by the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the assembly structure of a milling head backlash eliminating mechanism.

[0019] In the figure: 1. gear box; 2. drive shaft; 3. mounting block; 4. mounting groove; 5. milling cutter; 6. first drive gear; 7. second drive gear; 8. synchronous wheel; 9. synchronous belt; 10. bevel gear; 11. coupling; 12. rotating bearing; 13. nut; 14. housing; 15. cylinder sleeve; 16. cylinder connecting plate; 17. cylinder cover plate; 18. retraction positioning block. DETAILED DESCRIPTION

[0020] 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.

[0021] Embodiment 1:

[0022] A milling head clearance elimination mechanism, this embodiment is based on the existing problems in the processing of large-module gears, in order to achieve high-precision cutting, such as Figure 1-4 As shown, it includes a driving shaft 2 set up inside the gear box body 1, a mounting block 3 is fixed to an outer wall of one side of the driving shaft 2 by screws, and a mounting groove 4 is opened at the axis of the mounting block 3, a milling cutter 5 is fixed to the inner wall of the mounting groove 4 by bolts, and both ends of the outer wall of the driving shaft 2 are connected to a first driving gear 6 and a second driving gear 7, one end of the driving shaft 2 is connected to a helical gear 10, and a coupling 11 is set up on the outer wall of one side of the helical gear 10, and a rotating bearing 12 is sleeved on the outer wall of the coupling 11 away from the helical gear 10, and the end of the coupling 11 is fixed to the inside of the housing 14 by a nut 13;

[0023] During the chip cutting process of large-module gears, this clearance eliminating mechanism can realize the slow pushing of the bevel gear 10 by continuously changing the hydraulic oil metering inside the hydraulic cylinder, thereby performing axial displacement. That is, in the subsequent cutting process, the internal buffer hydraulic oil can eliminate the transmission gap in the gear box, making the milling cutter 5 cut more smoothly, reducing the influence of the reverse force on the tool, thereby extending the service life of the milling cutter 5 and improving the cutting accuracy.

[0024] The outer wall of the driving shaft 2 on one side of the first driving gear 6 is connected to a synchronous wheel 8, and the outer wall of the synchronous wheel 8 is meshed with the internal teeth of the gear box 1 to drive a synchronous belt 9, and the inner axis of the housing 14 is plugged with a cylinder sleeve 15, and the outer wall of the cylinder sleeve 15 is fixed to the housing 14 by bolts;

[0025] The end of the cylinder sleeve 15 is provided with a cylinder connecting plate 16 , and the side of the cylinder connecting plate 16 is fixed with a cylinder cover plate 17 , and both ends of the outer wall of the cylinder cover plate 17 are provided with retraction positioning blocks 18 .

[0026] When this embodiment is used, the power input part of the gear box 1 is first connected to the external three-phase asynchronous motor, and then the external power supply is turned on, and then the remaining parts are assembled. After the assembly process is completed, the three-phase asynchronous motor is started to drive the gears inside the gear box 1 to rotate, and because the synchronous belt 9 is meshed and driven inside the gear box 1, the drive shaft 2 will be driven to rotate continuously, thereby driving the milling cutter 5 at the end to rotate continuously, and then the rotating milling cutter 5 will be continuously approached to the large modulus gear to be processed to complete the processing. In the process of contact processing, due to the gap inside the gear box 1, there will be a certain vibration phenomenon during the processing of the milling cutter 5, causing the milling cutter 5 to vibrate, resulting in the occurrence of vibration. At this time, it is necessary to continuously change the hydraulic oil metering inside the hydraulic cylinder to achieve slow pushing of the bevel gear 10, thereby performing axial displacement, that is, in the subsequent cutting process, the internal buffer hydraulic oil can eliminate the transmission gap in the gear box 1, so that the milling cutter cuts more smoothly, and can reduce the influence of the reverse force on the tool, thereby extending the service life of the milling cutter and improving the cutting accuracy.

[0027] Embodiment 2:

[0028] A milling head clearance elimination mechanism, such as Figure 1-4 As shown, this embodiment makes the following supplements on the basis of Embodiment 1: one side of the cylinder sleeve 15 is connected to an oil pipe, and the oil pipe is connected to hydraulic oil, and the axis of the drive shaft 2 and the axis of the bevel gear 10, the coupling 11, the rotating bearing 12, the housing 14 and the cylinder sleeve 15 are all located on the same straight line.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A milling head backlash elimination mechanism, comprising a drive shaft (2) arranged inside a gear housing (1), characterized in that: A mounting block (3) is fixed to an outer wall of one side of the drive shaft (2) by screws, and a mounting groove (4) is provided at the axis of the mounting block (3), a milling cutter (5) is fixed to the inner wall of the mounting groove (4) by bolts, and both ends of the outer wall of the drive shaft (2) are connected to a first driving gear (6) and a second driving gear (7), one end of the drive shaft (2) is connected to a helical gear (10), and a coupling (11) is provided on an outer wall of one side of the helical gear (10), a rotating bearing (12) is sleeved on the outer wall of the coupling (11) away from the helical gear (10), and the end of the coupling (11) is fixed to the inside of a housing (14) by a nut (13).

2. A milling head backlash elimination mechanism according to claim 1, characterized in that: The outer wall of the driving shaft (2) on one side of the first driving gear (6) is connected to a synchronous wheel (8), and a synchronous belt (9) is meshed and driven between the outer wall of the synchronous wheel (8) and the internal teeth of the gear box (1).

3. A milling head backlash elimination mechanism according to claim 1, characterized in that: A cylinder sleeve (15) is inserted into the inner axis of the housing (14), and the outer wall of the cylinder sleeve (15) is fixed to the housing (14) by bolts.

4. A milling head backlash elimination mechanism according to claim 3, characterized in that: The end of the cylinder sleeve (15) is provided with a cylinder connecting plate (16), and a cylinder cover plate (17) is fixed to the side of the cylinder connecting plate (16), and both ends of the outer wall of the cylinder cover plate (17) are provided with retreat positioning blocks (18).

5. A milling head backlash elimination mechanism according to claim 4, characterized in that: One side of the oil cylinder sleeve (15) is connected to an oil pipe, and the oil pipe is connected to hydraulic oil.

6. A milling head backlash elimination mechanism according to claim 5, characterized in that: The axis center of the drive shaft (2) and the axis centers of the helical gear (10), the coupling (11), the rotary bearing (12), the housing (14) and the cylinder sleeve (15) are all located on the same straight line.

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