A vertical honing machine spindle assembly

Abstract

The utility model provides a kind of vertical honing machine main shaft assembly, including shell and the inner shaft being arranged in the inside of shell, outer shaft, inner shaft one end projects the outside of shell as the main shaft of vertical honing machine, outer shaft one end projects the outside of shell and is connected with control motor, shell inside is also equipped with planetary differential device, planetary differential device is simultaneously connected with inner shaft, outer shaft transmission, still include drive motor, drive motor is connected with the drive of planetary differential device.This practical main shaft assembly whole structure is simple, need not occupy additional space, it is convenient to use directly in vertical honing machine, reduces installation, maintenance difficulty and the difficulty of equipment transportation;In the utility model, planetary differential device is used as the transfer device of power transmission, the final power output of the superposition of drive motor and control motor is to inner shaft, the setting of speed difference can be completed by drive motor from outside, with better adjustment flexibility and adjustment efficiency, and then also improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vertical honing machine technology, and in particular to a vertical honing machine spindle assembly. Background Technology

[0002] Honing is a special type of grinding process that uses an oilstone embedded in a honing head to process the surface of a workpiece. It can perform fine grinding of planes, cylindrical surfaces, spherical surfaces, and more. A honing machine is a grinding machine that uses honing to finish the surface of a workpiece. It is mainly used in the automotive, tractor, hydraulic component, bearing, and aerospace manufacturing industries for honing holes in workpieces.

[0003] The honing head, inlaid with oilstones, on a vertical honing mill is driven to rotate by a vertically mounted spindle, while simultaneously performing a vertical reciprocating feed motion under the drive of a hydraulic system. Therefore, the spindle is one of the core components of a vertical honing mill. Different product materials and processing requirements may necessitate different rotational speeds during processing, requiring precise adjustment of the spindle's rotational speed. For this reason, the spindle assembly of a vertical honing mill typically includes a gearbox to regulate the speed. However, traditional gearboxes present certain problems when used in vertical honing mills. Firstly, traditional gearboxes usually employ a gearbox structure, which is bulky and inconvenient to install on the honing mill. Secondly, when the original speed difference needs to be changed, traditional differentials often require stopping the machine and replacing or adjusting the internal gear structure, which undoubtedly reduces production efficiency. Therefore, a better vertical honing mill spindle assembly structure is needed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a vertical honing machine spindle assembly, which solves the problems of the large size of the vertical honing machine spindle gearbox and the inconvenience of adjusting the original speed difference.

[0005] According to an embodiment of this utility model, a vertical honing machine spindle assembly includes a closed housing and an inner shaft and an outer shaft disposed inside the housing. The outer shaft is coaxially rotatably sleeved outside the inner shaft. Both ends of the inner shaft extend through the outer shaft, with one end extending outside the housing as the spindle of the vertical honing machine, and the other end located inside the housing and connected to a first transmission component. The outer shaft is rotatably mounted inside the housing, with one end extending outside the housing and connected to a control motor, and the other end located inside the housing and connected to a second transmission component. A planetary differential device is also provided inside the housing, which is simultaneously connected to both the first and second transmission components. The assembly also includes a drive motor disposed outside the housing, which is connected to the planetary differential device, allowing the drive motor to be driven independently to the first transmission component via the planetary differential device. Simultaneously, the control motor can also be driven to the first transmission component via the second transmission component and the planetary differential device.

[0006] Furthermore, the first transmission component is an inner shaft sun gear with external teeth on its exterior, and the second transmission component is an outer shaft sun gear with external teeth on its exterior. Both the inner shaft sun gear and the outer shaft sun gear are simultaneously connected to the planetary differential transmission device.

[0007] Furthermore, the planetary differential device includes a planet carrier and a first planetary gear and a second planetary gear disposed on opposite sides of the planet carrier. The first planetary gear is connected to a first transmission component, and the second planetary gear is connected to the second transmission component.

[0008] Furthermore, a reducer and a transmission disc are provided between the drive motor and the planetary differential device, thereby driving the transmission disc to rotate coaxially with the inner and outer shafts. The transmission disc is provided with a protruding movable gear ring on the side corresponding to the planetary differential device. The movable gear ring has annular internal teeth and is driven to connect with the first planetary gear through the internal teeth.

[0009] Furthermore, a fixed gear ring is also installed inside the housing. The fixed gear ring has annular internal teeth and is driven to the second planetary gear through the internal teeth.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The main spindle assembly of this utility model has a simple overall structure, integrating the inner spindle, outer spindle and planetary differential device inside the housing, without occupying additional space, making it easy to use directly in vertical honing machines, reducing the difficulty of installation, maintenance and equipment transportation;

[0012] 2. In this application, the planetary differential gear is used as a power transmission relay device. First, the drive motor drives the inner shaft to rotate through the planetary differential gear, thereby driving the honing head. Then, the control motor drives the outer shaft to rotate, further transmitting power to the planetary differential gear. Thus, the planetary differential gear receives power output from both the drive motor and the control motor simultaneously, and the combined power output is delivered to the honing head. In this way, the speed difference can be set by changing the drive motor externally, which has better adjustment flexibility and efficiency, thereby improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic cross-sectional view of an embodiment of the present utility model.

[0014] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the shell in an embodiment of this utility model.

[0015] Figure 3 for Figure 2An enlarged schematic diagram of part A in the middle.

[0016] Figure 4 This is an axial schematic diagram of the planetary differential device from the drive motor side.

[0017] In the above figures: 1. Housing; 2. Inner shaft; 3. Outer shaft; 4. Inner shaft sun gear; 5. Outer shaft sun gear; 6. Planetary differential device; 7. Transmission disc; 8. Reducer; 9. Drive motor; 11. Upper housing; 12. Lower housing; 13. Fixed gear ring; 31. Connecting sleeve; 61. Planet carrier; 62. First planetary gear; 63. Second planetary gear; 71. Fixed gear ring. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 As shown, this utility model embodiment proposes a vertical honing machine spindle assembly, including a closed housing 1 and an inner shaft 2 and an outer shaft 3 disposed inside the housing 1. In this embodiment, the housing 1 is a hollow cylindrical structure with a space in the middle for the inner shaft 2 and the outer shaft 3 to pass through. The housing 1 includes an upper outer shell 11 and a lower outer shell 12 arranged opposite to each other along the axial direction, thereby forming a detachable structure.

[0020] like Figure 2 , Figure 3 As shown, in the specific design, the outer shaft 3 is coaxially rotatably sleeved outside the inner shaft 2. Both ends of the inner shaft 2 extend beyond the end face of the outer shaft 3. One end extends outside the housing 1 as the main shaft of the vertical honing machine, while the other end is located inside the housing 1 and connected to a first transmission component. Preferably, the first transmission component is an inner shaft sun gear 4, which is connected to the external honing stone tightening mechanism to achieve oilstone feeding. The outer shaft 3 is rotatably installed inside the housing 1. One end of the outer shaft 3 extends outside the housing 1 and is connected to a control motor (not shown) via a synchronous pulley, synchronous belt, and reduction mechanism. The other end is located inside the housing 1 and connected to a second transmission component. In this embodiment, a connecting synchronous gear 31 is coaxially sleeved on the outer end of the outer shaft 3 extending out of the housing 1. The connecting sleeve 31 is connected to the control motor via a synchronous belt and reduction mechanism. Preferably, the second transmission component is an outer shaft sun gear 5, which has external teeth. It should be noted that the inner shaft sun gear 4 and the outer shaft sun gear 5 are arranged adjacently and coaxially.

[0021] like Figure 4As shown, the housing 1 also houses a planetary differential device 6. The planetary differential device 6 includes an annular planetary carrier 61 and four first planetary gears 62 and four second planetary gears 63 disposed on opposite sides of the planetary carrier 61. The first planetary gears 62 and second planetary gears 63 are evenly spaced. The first planetary gears 62 mesh with the first transmission component, i.e., the inner shaft sun gear 4, and the second planetary gears 63 mesh with the second transmission component, i.e., the outer shaft sun gear 5. Furthermore, fixed gear rings 71 and 13 are installed inside the housing 1 using screws or rivets. The fixed gear rings 71 and 13 have annular internal teeth and are driven by the second planetary gears 63 through these internal teeth. That is, the power output from the control motor is transmitted to the inner shaft 2 via the outer shaft 3, outer shaft sun gear 5, second planetary gears 63, planetary carrier 61, first planetary gears 62, and inner shaft sun gear 4, realizing the power output of the outer shaft 3 and inner shaft 2.

[0022] The system also includes a drive motor 9 disposed outside the housing 1. The output shaft of the drive motor 9 is connected to a reducer 8 to achieve the first step of deceleration of the drive motor 9. The output shaft of the reducer 8 extends into the housing 1 and is connected to a transmission disk 7. The transmission disk 7 is a disc-shaped structure coaxial with the inner shaft 2, and its diameter is larger than the outer diameter of the planetary carrier 61. A protruding movable gear ring is provided on one side surface of the transmission disk 7 corresponding to the planetary carrier 61. The movable gear ring is fixed to the transmission disk 7 by screws or rivets. The movable gear ring has annular internal teeth and is drivenly connected to the first planetary gear 62 through the internal teeth. Therefore, the power output by the drive motor 9 is transmitted to the inner shaft 2 through the reducer 8, transmission disk 7, movable gear ring, first planetary gear 62, and inner shaft sun gear 4, directly driving the rotation of the inner shaft 2.

[0023] As can be seen from the above, in this embodiment, the drive motor 9 and the control motor can simultaneously output power to the planetary differential device 6, and the power is superimposed on the planetary carrier 61. Finally, the power is transmitted to the inner shaft 2 by the first planetary gear 62. In this way, the final rotational speed of the inner shaft 2 can be changed by adjusting the output of the control motor. At the same time, the output power of the drive motor 9 and the control motor does not directly act on the inner shaft 2, and the structural stability of the inner shaft 2 will not be affected by the torque generated on the inner shaft 2 due to different rotational speeds.

[0024] It should be noted that rotating bearings are provided between the inner shaft 2 and the outer shaft 3, and between the outer shaft 3 and the housing 1, so as to maintain the normal operation of the rotating parts in this embodiment.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vertical honing mill spindle assembly, characterized in that: The device includes a closed housing and an inner shaft and an outer shaft disposed inside the housing. The outer shaft is coaxially rotatably sleeved outside the inner shaft. Both ends of the inner shaft extend through the outer shaft. One end of the inner shaft extends outside the housing and serves as the main shaft of the vertical honing machine, while the other end is located inside the housing and connected to a first transmission component. The outer shaft is rotatably mounted inside the housing. One end of the outer shaft extends outside the housing and is connected to a control motor, while the other end is located inside the housing and is connected to a second transmission component. A planetary differential device is also provided inside the housing. The planetary differential device is simultaneously connected to both the first and second transmission components. The device also includes a drive motor disposed outside the housing. The drive motor is connected to the planetary differential device, allowing the drive motor to drive independently to the first transmission component via the planetary differential device. Simultaneously, the control motor can also drive to the first transmission component via the second transmission component and the planetary differential device.

2. The vertical honing mill spindle assembly as described in claim 1, characterized in that: The first transmission component is an inner shaft sun gear with external teeth on its exterior. The second transmission component is an outer shaft sun gear with external teeth on its exterior. Both the inner shaft sun gear and the outer shaft sun gear are simultaneously connected to the planetary differential transmission device.

3. The vertical honing mill spindle assembly as described in claim 1, characterized in that: The planetary differential device includes a planet carrier and a first planetary gear and a second planetary gear disposed on opposite sides of the planet carrier. The first planetary gear is connected to a first transmission component, and the second planetary gear is connected to the second transmission component.

4. The vertical honing mill spindle assembly as described in claim 3, characterized in that: A reducer and a transmission disc are also provided between the drive motor and the planetary differential device, thereby driving the transmission disc to rotate coaxially with the inner shaft and the outer shaft. The transmission disc has a protruding movable gear ring on the side corresponding to the planetary differential device. The movable gear ring has annular internal teeth and is driven to connect with the first planetary gear through the internal teeth.

5. The vertical honing mill spindle assembly as described in claim 3, characterized in that: The housing also contains a fixed gear ring, which has annular internal teeth and is driven to the second planetary gear through the internal teeth.

Images