Gear hobbing machine spindle with high-speed lubricating and cooling functions

Abstract

The invention relates to the technical field of gear hobbing machine equipment, and discloses a gear hobbing machine main shaft with high-speed lubricating and cooling, which comprises a main shaft and a connecting bearing arranged in a main shaft box, the main shaft is arranged in the connecting bearing, and an oil injection hole and an oil return hole are formed in the main shaft box. The oil injection hole and the oil return hole are connected with an oil injection connector and an oil return connector respectively, and the oil injection connector and the oil return connector are connected with circulating equipment through pipelines. The problems that after an existing gear hobbing machine is used and operated for a long time, the temperature of a bearing and a main shaft inside the gear hobbing machine can rise, when the temperature of the main shaft is too high, the machining precision and the equipment stability of the gear hobbing machine can be affected, and the service life of the bearing and the service life of the main shaft can also be affected to a certain degree are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of gear hobbing machine equipment, in particular to a gear hobbing machine spindle with high-speed lubrication and cooling. Background Art

[0002] Gear hobbing machine is a mechanical device that processes gears based on the principle of generating method. The gear hobbing process is equivalent to the process of a pair of helical gears meshing and rolling. When the machine tool makes the hob and the workpiece rotate relative to each other strictly according to the transmission relationship of a pair of helical gears, teeth can be cut continuously on the workpiece.

[0003] The spindles on the current gear hobbing machines are installed on the gear hobbing machines through bearings. When the spindles on the gear hobbing machines are rotated for a long time, lubricating oil will be applied to the bearings. After the gear hobbing machine has been used for a long time, the temperature of its internal bearings and spindles will increase. When the spindle temperature is too high, it will affect the processing accuracy and equipment stability of the gear hobbing machine, and will also have a certain impact on the service life of the bearings and spindles. Summary of the invention

[0004] The purpose of the present invention is to solve the problem mentioned in the above background technology that after the existing gear hobbing machine is used for a long time, the temperature of its internal bearings and spindle will increase. When the spindle temperature is too high, it will affect the processing accuracy and equipment stability of the gear hobbing machine, and will also have a certain impact on the service life of the bearings and the spindle.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A gear hobbing machine spindle with high-speed lubrication and cooling, comprising a spindle box with a spindle and a connecting bearing, the spindle is arranged in the connecting bearing, the spindle box is provided with an oil filling hole and an oil return hole, the oil filling hole and the oil return hole are respectively connected to an oil filling joint and an oil return joint, and the oil filling joint and the oil return joint are both connected to a circulation device through a pipeline.

[0006] Preferably, there are multiple oil filling holes and oil return holes, and the main spindle box is provided with oil separator block 1 and oil separator block 2. The oil separator block 1 is connected to multiple oil filling joints, the oil separator block 2 is connected to multiple oil return joints, and the oil separator block 1 and the oil separator block 2 are connected to the circulation equipment.

[0007] Preferably, the circulation equipment includes a circulation box, on which is provided an air cooler, an oil injection pump, an oil return pump and a filter. The oil injection pump is connected to the filter and the circulation box respectively, the air cooler is connected to the oil return pump and the oil separator block 2 respectively, the oil return pump is connected to the oil separator block 2 and the circulation box respectively, the discharge end of the filter is connected to the oil separator block 1, the air cooler can be an existing air-cooled air cooler when in use, and the circulating reflux lubricating oil can be cooled by the air cooler, and the filter can be an existing lubricating oil filter when in use, and can filter the circulating lubricating oil.

[0008] Preferably, a control member is provided between the plurality of oil return joints and the plurality of oil return holes, and the oil return joints are connected to the oil return holes through the control member, and the amount of lubricating oil discharged can be controlled through the control member, which helps to stabilize the lubricating oil pressure inside the main shaft.

[0009] Preferably, the control component includes an outer shell, a connecting pipe is provided in the outer shell, an adjusting plate is provided in the connecting pipe, a rotating shaft that can be rotated and adjusted is provided on the adjusting plate, the rotating shaft passes through the connecting pipe at one end away from the adjusting plate and is connected to a transmission component, the transmission component is connected to the connecting pipe through a driving component, and the rotating shaft is rotatably connected to the connecting pipe through a bearing.

[0010] Preferably, the driving member includes a driving tube, which is connected to the connecting pipe. A movable plate and a spring are provided inside the driving member. A sealing ring is provided on the movable plate. The movable plate is connected to one end of the spring. A movable rod is provided on the movable plate. The end of the movable rod away from the movable plate passes through the driving tube and is connected to a transmission member. The movable rod is connected to the rotating shaft on the adjustment plate through the transmission member.

[0011] Preferably, the transmission member includes rack 1, rack 2 and a transmission, the input shaft of the transmission is provided with gear 1, the output shaft of the transmission is provided with gear 2, the rack 1 is meshingly connected with gear 1, the rack 2 is meshingly connected with gear 2, the rotating shaft of the adjustment plate is provided with gear 3, the gear 3 is meshingly connected with rack 2, the rack 1 is provided with a connecting block, the connecting block is connected to the moving rod through one end of the driving tube, the transmission is an existing speed changing device, the speed can be changed through the transmission, and the opening size of the adjustment plate can be adjusted more accurately according to the distance moved by the moving plate.

[0012] Preferably, two support plates 1 and 2 are provided in the outer shell, and limiting grooves are provided on the two support plates 1. The rack 1 and the rack 2 are respectively located in the limiting grooves on the two support plates 1, and the rotating shaft rotates in the support plate 2. The rack 1 and the rack 2 can be stably supported by the support plate 1, and the rotating shaft can be stably supported by the support plate 2.

[0013] Preferably, a rotating sleeve is rotatably provided at one end of the driving tube away from the connecting pipe, a threaded rod which is threadedly matched with the threaded sleeve is provided inside the rotating sleeve, one end of the threaded rod is inside the driving tube and is connected to an extrusion plate, the extrusion plate is in contact with one end of the spring away from the moving plate, and rotating the rotating sleeve allows the threaded rod to move linearly, and the threaded rod can drive the extrusion plate to move, thereby adjusting the pressure of the spring.

[0014] Preferably, the connecting pipe is connected to the oil return hole on the spindle box, and the oil return joint is connected to the connecting pipe. The lubricating oil in the spindle box is discharged through the oil return hole, and then enters the oil return joint via the connecting pipe, thereby circulating the lubricating oil in the spindle box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an oil filling hole on the spindle box so that lubricating oil can be injected into the spindle box, and an oil return hole is provided below the spindle box so that the injected lubricating oil is discharged from the oil return hole below. The lubricating oil is injected into the spindle box from the oil filling hole through a circulating device, and then drawn back into the circulation box from the oil return hole. The injected lubricating oil can lubricate and cool the working connecting bearings and the spindle. The circulation of the lubricating oil can continuously cool the connecting bearings and the spindle, and can effectively prevent the spindle and the connecting bearing from being overheated due to continuous rotation. And through the set control parts, the speed of lubricating oil discharged from the oil return hole can be further controlled according to the pressure conditions in the spindle box, which helps to stabilize the lubricating oil pressure inside the spindle, ensure that the connected bearings can obtain an appropriate amount of lubricating oil under different working conditions, ensure that the circulation return efficiency of the lubricating oil and the internal pressure value are in the best state, and can optimize the lubrication effect and reduce friction and wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural view of the circulation device of the present invention; Figure 3 It is a cross-sectional view of the spindle box of the present invention; Figure 4 It is a view showing the position of the oil filling hole of the present invention; Figure 5 A structural view of a control element of the present invention; Figure 6 is a cross-sectional view of the outer shell of the present invention; Figure 7 This is a view showing the connection between the transmission member and the driving member of the present invention; Figure 8 It is a cross-sectional view of the connecting pipe and the driving pipe of the present invention; Fig. 9 It is a structural view of the transmission member of the present invention; Fig.10 It is a position view of the support plate 1 and the support plate 2 of the present invention.

[0018] Explanation of the figure numbers: 1. Spindle box; 11. Oil filling joint; 12. Oil filling hole; 13. Oil return joint; 14. Oil return hole; 2. Spindle; 3. Connecting bearing; 4. Oil distributor block 1; 5. Oil distributor block 2; 6. Circulation equipment; 61. Oil filling pump; 62. Oil return pump; 63. Air cooler; 64. Circulation box; 65. Filter; 7. Control unit; 71. Outer shell; 711. Support plate 1; 712. Support plate 2; 72. Connecting pipe ; 73. Adjustment plate; 74. Rotating shaft; 75. Transmission member; 751. Connecting block; 752. Rack one; 753. Gear one; 754. Transmission; 755. Gear two; 756. Rack two; 757. Gear three; 76. Driving member; 761. Driving tube; 762. Moving plate; 763. Sealing ring; 764. Spring; 765. Moving rod; 766. Rotating sleeve; 767. Threaded rod; 768. Extrusion plate. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below with reference to the accompanying drawings.

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0023] See also Figure 1-Figure 10 A gear hobbing machine spindle with high-speed lubrication and cooling, comprising a spindle box 1 in which a spindle 2 and a connecting bearing 3 are arranged, the spindle 2 is arranged in the connecting bearing 3, the spindle box 1 is provided with an oil filling hole 12 and an oil return hole 14, the oil filling hole 12 and the oil return hole 14 are respectively connected to an oil filling joint 11 and an oil return joint 13, the oil filling joint 11 and the oil return joint 13 are both connected to a circulation device 6 through a pipeline, the oil filling hole 12 and the oil return hole 14 are each provided with multiple, the spindle box 1 is provided with an oil dividing block 1 4 and an oil dividing block 2 5, the oil dividing block 1 4 is connected to multiple oil filling joints 11, the oil dividing block 2 5 is connected to multiple oil return joints 13, the oil dividing block 1 4 and the oil dividing block 2 5 are connected to the circulation device 6.

[0024] Furthermore, the circulation device 6 includes a circulation box 64, on which is provided a cooling fan 63, an oil injection pump 61, an oil return pump 62 and a filter 65. The oil injection pump 61 is connected to the filter 65 and the circulation box 64 respectively, the cooling fan 63 is connected to the return oil pump 62 and the oil separator block 2 5 respectively, the return oil pump 62 is connected to the oil separator block 2 5 and the circulation box 64 respectively, the discharge end of the filter 65 is connected to the oil separator block 1 4, and highly lubricating oil is stored in the circulation box 64. The cooling fan 63 can be an existing air-cooled fan 63 when in use, and the circulating reflux lubricating oil can be continuously cooled by the cooling fan 63. The filter 65 can be an existing lubricating oil filter 65 when in use, and can filter the circulating lubricating oil. The oil injection pump 61 and the return oil pump 62 are both forced circulation pumps when in use.

[0025] A control component 7 is provided between the multiple oil return joints 13 and the multiple oil return holes 14 . The oil return joints 13 are connected to the oil return holes 14 via the control component 7 . The amount of lubricating oil discharged can be controlled via the control component 7 , which helps to stabilize the lubricating oil pressure inside the main shaft 2 .

[0026] Furthermore, the control member 7 includes an outer shell 71, a connecting pipe 72 is provided in the outer shell 71, an adjusting plate 73 is provided in the connecting pipe 72, a rotating shaft 74 capable of rotating and adjusting the adjusting plate 73 is provided on the adjusting plate 73, and the rotating shaft 74 passes through the connecting pipe 72 at one end away from the adjusting plate 73 and is connected to a transmission member 75, the transmission member 75 is connected to the connecting pipe 72 through a driving member 76, and the rotating shaft 74 is rotatably connected to the connecting pipe 72 through a bearing.

[0027] The driving member 76 includes a driving tube 761, which is connected to the connecting pipe 72. A moving plate 762 and a spring 764 are provided in the driving member 76. A sealing ring 763 is provided on the moving plate 762. The moving plate 762 is connected to one end of the spring 764. A moving rod 765 is provided on the moving plate 762. The end of the moving rod 765 away from the moving plate 762 passes through the driving tube 761 and is connected to the transmission member 75. The moving rod 765 is transmission-connected to the rotating shaft 74 on the adjustment plate 73 through the transmission member 75.

[0028] The transmission member 75 includes a rack 1 752, a rack 2 756 and a transmission 754. A gear 1 753 is provided on the input shaft of the transmission 754, and a gear 2 755 is provided on the output shaft of the transmission 754. The rack 1 752 is meshed and connected with the gear 1 753, and the rack 2 756 is meshed and connected with the gear 2 755. A gear 3 757 is provided on the rotating shaft 74 of the adjustment plate 73, and the gear 3 757 is meshed and connected with the rack 2 756. A connecting block 751 is provided on the rack 1 752, and the connecting block 751 is connected to the moving rod 765 through one end of the driving tube 761. The transmission 754 is an existing speed changing device, and the speed can be changed through the transmission 754. The opening size of the adjustment plate 73 can be adjusted more accurately according to the moving distance of the moving plate 762.

[0029] It should be noted that two support plates 1 711 and 712 are provided in the outer shell 71, and the two support plates 1 711 are provided with limiting grooves. The rack 1 752 and the rack 2 756 are respectively located in the limiting grooves on the two support plates 1 711, and the rotating shaft 74 rotates in the support plate 2 712. The support plate 1 711 can stably support the rack 1 752 and the rack 2 756, and the support plate 2 712 can stably support the rotating shaft 74.

[0030] It should be added that a rotating sleeve 766 is rotatably provided at one end of the driving tube 761 away from the connecting pipe 72, and a threaded rod 767 is provided in the rotating sleeve 766 and is threadedly matched with the thread. One end of the threaded rod 767 is in the driving tube 761 and is connected to an extrusion plate 768. The extrusion plate 768 is in contact with one end of the spring 764 away from the moving plate 762. Rotating the rotating sleeve 766 allows the threaded rod 767 to move linearly, and the threaded rod 767 can drive the extrusion plate 768 to move, thereby adjusting the pressure of the spring 764.

[0031] Among them, the connecting pipe 72 is connected to the oil return hole 14 on the spindle box 1, and the oil return joint 13 is connected to the connecting pipe 72. The lubricating oil in the spindle box 1 is discharged through the oil return hole 14, and then enters the oil return joint 13 via the connecting pipe 72, so that the lubricating oil in the spindle box 1 is circulated and discharged.

[0032] When in use, there is lubricating oil in the circulation box 64, the spindle 2 in the spindle box 1 rotates, and the oil injection pump 61 pumps the lubricating oil in the circulation box 64 into the filter 65. The filter 65 first filters the lubricating oil in use, and the filtered lubricating oil is transported to the oil separator 4. The oil separator 4 divides the lubricating oil into multiple strands and transports the multiple strands of lubricating oil to multiple oil injection joints 11 respectively, and then injects the lubricating oil into multiple oil injection holes 12. The injected lubricating oil can lubricate the connecting bearing 3 in the spindle box 1 and cool it down at the same time, thereby To prevent the main shaft 2 and the connecting bearing 3 from overheating due to continuous rotation, the injected lubricating oil can be discharged from the oil return hole 14 below through the oil return pump 62, and the discharged lubricating oil enters the oil separation block 2 5 through the connecting pipe 72 and the oil return joint 13, and the multiple lubricating oils entering are turned into one through the oil separation block 2 5, and the lubricating oil is sent to the air cooler 63, and the temperature of the lubricating oil is dissipated and cooled by the air cooler 63. The cooled lubricating oil is pumped into the circulation box 64 through the oil return pump 62, so that the lubricating oil can be recycled; As the main shaft 2 starts to run or the speed increases, heat and mechanical energy will be generated due to friction and relative movement inside the bearing. These energies may cause the temperature of the lubricating oil to rise, the volume to expand, and then increase the internal pressure. On the contrary, when the main shaft 2 speed decreases or stops, the temperature of the lubricating oil gradually decreases, the volume shrinks, and the internal pressure decreases accordingly. When the internal pressure increases, the lubricating oil pushes the moving plate 762, and the moving plate 762 squeezes the spring 764, and at the same time pushes the moving rod 765 to move. The moving rod 765 drives the rack 1 752 connected thereto to move, and the moving rack 1 752 is connected thereto through the gear meshing connection. The gear 1 753 drives the transmission 754 to operate, and the output shaft of the transmission 754 rotates, which drives the rack 1 752 to move through the gear 2 755. The moving rack 1 752 drives the rotating shaft 74 to rotate through the meshing gear 3 757, and then drives the adjusting plate 73 to rotate, so that the outlet of the connecting pipe 72 is reduced, and the excessive outflow of the lubricating oil is limited, which helps to stabilize the lubricating oil pressure inside the main shaft 2. By controlling the oil output in one step, it can be ensured that the connecting bearing 3 can obtain an appropriate amount of lubricating oil under different working conditions, ensure that the circulation efficiency of the lubricating oil and the internal pressure value are in the best state, and can optimize the lubrication effect and reduce friction and wear.

[0033] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A gear hobbing machine spindle with high-speed lubrication and cooling, It is characterized in that It comprises a spindle box (1) in which a spindle (2) and a connecting bearing (3) are arranged, and the spindle (2) is arranged in the connecting bearing (3); The spindle box (1) is provided with an oil filling hole (12) and an oil return hole (14); the oil filling hole (12) and the oil return hole (14) are respectively connected to an oil filling joint (11) and an oil return joint (13); and the oil filling joint (11) and the oil return joint (13) are both connected to a circulation device (6) via a pipeline.

2. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 1, It is characterized in that A plurality of the oil injection holes (12) and the oil return holes (14) are provided. The spindle box (1) is provided with an oil separator block 1 (4) and an oil separator block 2 (5). The oil separator block 1 (4) is connected to a plurality of oil injection joints (11), the oil separator block 2 (5) is connected to a plurality of oil return joints (13), and the oil separator block 1 (4) and the oil separator block 2 (5) are connected to a circulation device (6).

3. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 2, It is characterized in that The circulation device (6) comprises a circulation box (64), on which a cooling fan (63), an oil injection pump (61), an oil return pump (62) and a filter (65) are provided. The oil injection pump (61) is connected to the filter (65) and the circulation box (64) respectively. The cooling fan (63) is connected to the oil return pump (62) and the second oil separator block (5) respectively. The oil return pump (62) is connected to the second oil separator block (5) and the circulation box (64) respectively. The discharge end of the filter (65) is connected to the first oil separator block (4).

4. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 3, It is characterized in that A control component (7) is provided between the plurality of oil return joints (13) and the plurality of oil return holes (14), and the oil return joints (13) are connected to the oil return holes (14) via the control component (7).

5. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 4, It is characterized in that The control member (7) comprises an outer shell (71), a connecting pipe (72) is arranged in the outer shell (71), an adjusting plate (73) is arranged in the connecting pipe, a rotating shaft (74) capable of rotating and adjusting the adjusting plate (73) is arranged on the adjusting plate (73), an end of the rotating shaft (74) away from the adjusting plate (73) passes through the connecting pipe and is connected to a transmission member (75), and the transmission member (75) is connected to the connecting pipe via a driving member (76).

6. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 5, It is characterized in that The driving member (76) comprises a driving tube (761), the driving tube (761) being in communication with the connecting pipe (72), a moving plate (762) and a spring (764) being provided inside the driving member (76), a sealing ring (763) being provided on the moving plate (762), the moving plate (762) being connected to one end of the spring (764), a moving rod (765) being provided on the moving plate (762), an end of the moving rod (765) away from the moving plate (762) passing through the driving tube (761) and being connected to the transmission member (75), and the moving rod (765) being in transmission connection with the rotating shaft (74) on the adjusting plate (73) via the transmission member (75).

7. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 6, It is characterized in that The transmission member (75) comprises a rack 1 (752), a rack 2 (756) and a transmission (754); a gear 1 (753) is arranged on the input shaft of the transmission (754); a gear 2 (755) is arranged on the output shaft of the transmission (754); the rack 1 (752) is meshingly connected with the gear 1 (753); the rack 2 (756) is meshingly connected with the gear 2 (755); a gear 3 (757) is arranged on the rotating shaft (74) of the adjustment plate (73); the gear 3 (757) is meshingly connected with the rack 2 (756); a connecting block (751) is arranged on the rack 1 (752); and the connecting block (751) is connected to the moving rod (765) through one end of the driving tube (761).

8. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 7, It is characterized in that Two support plates 1 (711) and 2 (712) are provided in the outer shell (71), and the two support plates 1 (711) are both provided with limiting grooves, and the rack 1 (752) and the rack 2 (756) are respectively located in the limiting grooves on the two support plates 1 (711), and the rotating shaft (74) is rotatably located in the support plate 2 (712).

9. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 8, It is characterized in that A rotating sleeve (766) is rotatably provided at one end of the driving tube (761) away from the connecting pipe (72), and a threaded rod (767) is provided in the rotating sleeve (766) and is threadably matched with the rotating sleeve. One end of the threaded rod (767) is located in the driving tube (761) and is connected to an extrusion plate (768), and the extrusion plate (768) is in contact with one end of the spring (764) away from the moving plate (762).

10. A gear hobbing machine spindle with high-speed lubrication and cooling according to claim 9, It is characterized in that The connecting pipe (72) is connected to the oil return hole (14) on the spindle box (1), and the oil return joint (13) is connected to the connecting pipe (72).

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