Hollow rotating table device

Abstract

The utility model provides a hollow rotary table device which comprises a shell, a rotary table body and a rotary table body. The main shaft is rotatably arranged in the shell, and the main shaft is provided with a shaft hole penetrating in the axial direction of the center part; the rotating mechanism comprises a main gear fixed at the end part of the main shaft and a driving assembly for driving the main gear to rotate; wherein a plurality of annular grooves are formed in the inner wall, attached to the main shaft, of the shell in the axial direction, the main shaft is provided with a plurality of circulation channels, the shell is provided with a plurality of guide channels, and the number of the circulation channels and the number of the guide channels are both larger than or equal to the number of the annular grooves. And it is guaranteed that a port of one circulation channel and a port of one guide channel are formed in each annular groove correspondingly. By means of the mode, liquid and gas are supplied to the material carrying jig from the interior of the rotating table, space is effectively saved, meanwhile, liquid and gas are introduced, the liquid provides power for the hydraulic cylinder, and the gas conducts purging action.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to a hollow rotating table device. Background Art

[0002] The turntable device has a rotatable spindle, and the workpiece, jig, etc. are fixed on the panel of the spindle and indexed, etc. In the case where the jig is installed on the panel of the spindle, there is a case where the turntable device has a rotary joint for conveying the working fluid (hydraulic or pneumatic) to the jig. In order to adapt to the inspection of long-axis products, the center of the spindle is set to a hollow structure, which is convenient for the product to be inserted from the center of the main axis and placed on the jig. However, in this case, the debris generated during the product processing process is easy to fall to the center of the spindle and accumulate, which will cause interference when the product is subsequently fed; at the same time, excessive debris accumulation is prone to some debris splashing onto the positioning surface of the jig. If it is not cleaned in time, the product will be inaccurately positioned when placed. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a hollow rotating table device with a simple structure.

[0004] The main contents of the utility model include: a housing;

[0005] A main shaft rotatably disposed in the housing, the main shaft having an axial hole penetrating along the axial direction of the center portion;

[0006] A rotating mechanism, comprising a main gear fixed to the end of the main shaft and a driving assembly driving the main gear to rotate, wherein the driving assembly is correspondingly arranged at the end of the housing;

[0007] Among them, a plurality of annular grooves are arranged axially on the inner wall of the shell body that is in contact with the main shaft, the annular grooves extend horizontally along the circumference, and form a cavity structure with the outer wall of the main shaft, the main shaft has a plurality of circulation channels, the input end of the circulation channel is opened on the outer side wall of the main shaft and corresponds to the cavity structure, and the output end is opened on an end face of the main shaft away from the rotating mechanism, the shell body has a plurality of guide channels, the input end of the guide channel is opened on the outer wall of the shell body, and the output end is opened in the annular groove, the number of the circulation channels and the guide channels are both greater than or equal to the number of the annular grooves, ensuring that each of the annular grooves has a corresponding port of the circulation channel and a port of the guide channel.

[0008] Preferably, a plurality of sealing grooves extending horizontally along the circumference are further provided on the inner wall of the shell, ensuring that there is a corresponding sealing groove on both axial sides of each annular groove, and a sealing ring is arranged in the sealing groove.

[0009] Preferably, the driving assembly includes a first rotating motor and a first driving gear arranged at an output end of the first rotating motor, and the first driving gear is meshed and arranged at one side of the main gear.

[0010] Preferably, the driving assembly further comprises a second rotating motor and a second driving gear arranged at an output end of the second rotating motor, and the second driving gear is meshedly arranged at one side of the main gear.

[0011] Preferably, a brake mechanism is arranged between the housing and the main shaft, the housing comprises a first housing and a second housing which are axially connected, an accommodating cavity is arranged between the first housing and the second housing, and part of the brake mechanism is placed in the accommodating cavity.

[0012] Preferably, the braking mechanism includes a dynamic brake pad, a static brake pad and a brake piston, one end of the dynamic brake pad is fixed to the outer wall of the main shaft, and the other end extends into the accommodating cavity, the static brake pad is fixed to the upper end surface of the second shell and placed in the accommodating cavity, the dynamic brake pad and the static brake pad are parallel to each other and not connected to each other, and have overlapping braking parts in the vertical direction.

[0013] Preferably, a brake groove is provided on the second shell at a position corresponding to the brake part, the brake piston is placed in the brake groove, a ventilation channel is provided at the bottom of the brake groove, and the air inlet end of the ventilation channel is correspondingly provided on the outer wall of the second shell.

[0014] Preferably, the lower end surface of the brake piston is provided with an upwardly protruding notch, and the notch can be correspondingly provided as a V-shaped structure or a U-shaped structure.

[0015] Preferably, it further comprises a blocking component, which is correspondingly arranged above the central axis, and the blocking component comprises an oil baffle plate, which is mounted on the upper end surface of the turntable shell through a plurality of pillars.

[0016] Preferably, a sleeve is further disposed at the upper end of the oil baffle plate, and the inner diameter of the sleeve is matched with the inner diameter of the shaft hole.

[0017] The beneficial effects of the utility model are:

[0018] The rotary table device provides at least two sets of channels for air intake and liquid intake respectively. The liquid provides power for the hydraulic cylinder to clamp and release the product, while the gas performs purging to prevent machining debris from accumulating on the shaft hole or the fixture positioning surface, thereby improving the loading speed and machining accuracy.

[0019] A guide channel and a flow channel are respectively provided on the housing and the main shaft, so that during the 360° rotation of the main shaft relative to the housing, air or liquid can be continuously introduced without causing pipeline interference;

[0020] The main gear is controlled to rotate forward and reversely by two sets of driving gears. When one driving gear is used as the driving gear to drive the main gear to rotate, the other driving gear is used as the driven gear to rotate in coordination, so that when the main gear rotates from forward to reverse, seamless conversion is achieved, which effectively improves work efficiency.

[0021] A brake mechanism is arranged between the main shaft and the housing. Air is blown into the brake groove to push the brake piston upward. The brake piston pushes the static brake pad to deform upward and come into contact with the dynamic brake pad so that the static brake pad and the dynamic brake pad are in contact and squeezed. The dynamic brake pad stops rotating due to friction and squeezing, and braking is achieved by driving the main shaft to stop rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment;

[0023] Figure 2 It is a schematic cross-sectional structure diagram of a preferred embodiment;

[0024] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at a in the middle;

[0025] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at point b in the middle;

[0026] Reference numerals:

[0027] 1. Shell; 101. First shell; 102. Second shell; 11. Annular groove; 12. Guide channel; 13. Sealing ring; 14. Braking groove; 15. Ventilation channel;

[0028] 2. spindle; 21. shaft hole; 22. circulation channel; 23. bearing; 24. boss;

[0029] 3. Rotating mechanism; 31. Main gear; 32. First rotating motor; 33. First driving gear; 34. Second rotating motor; 35. Second driving gear;

[0030] 4. Braking mechanism; 41. Dynamic brake pad; 42. Static brake pad; 43. Brake piston;

[0031] 51. Oil baffle; 52. Support; 53. Sleeve. DETAILED DESCRIPTION

[0032] The technical solution protected by the utility model is described in detail below with reference to the accompanying drawings.

[0033] like Figure 1-4As shown, the present application is a hollow turntable device, which includes a shell 1, a main shaft 2 and a rotating mechanism 3. The main shaft 2 is rotatably arranged at the center of the shell 1, and the main shaft 2 has an axial hole 21 that penetrates axially along the center portion. The shell 1 and the main shaft 2 are connected by a bearing 23, and the main shaft 2 can rotate relative to the shell 1. One end of the main shaft 2 is connected to the rotating mechanism 3, and the main shaft 2 is driven by the rotating mechanism 3 to rotate, and the other end is used to install a loading fixture, and the loading fixture is used to place the product to be processed. When the product is a long axis structure, the product can be partially placed in the axial hole 21 of the main shaft 2 to expand the application range of the turntable. Preferably, the diameter range of the axial hole is 330mm-800mm to adapt to profiles of different sizes to be processed.

[0034] like Figure 1-2 As shown, the rotating mechanism 3 includes a main gear 31 fixed to the end of the main shaft 2 and a driving assembly arranged at the end of the housing 1, the driving assembly includes a first rotating motor 32 and a first driving gear 33 arranged at the output end of the first rotating motor 32, the first driving gear 33 is meshed with the main gear 31, and the first driving gear 33 is driven to rotate by the action of the first rotating motor 32, thereby driving the main gear 31 and the main shaft 2 connected to the main gear 31 to rotate synchronously.

[0035] like Figure 1-2 As shown, preferably, the driving assembly also includes a second rotating motor 34 and a second driving gear 35 configured at the output end of the second rotating motor 34, and the second driving gear 35 is meshed with the main gear 31. Among them, any one of the first rotating motor 32 and the second rotating motor 34 is in motion, driving the corresponding driving gear to rotate, and the other rotating motor is not in motion, and its corresponding driving gear acts as a driven gear, driven to rotate by the main gear 31, and the first driving gear 33 and the second driving gear 35 respectively drive the main gear 31 to rotate in the clockwise direction or counterclockwise direction. Due to the size difference between the teeth of the driving gear and the main gear 31, there is a gap between the teeth when they are meshed with each other. Therefore, there is a certain time interval in the process of using only a single driving gear to drive the main gear to rotate clockwise and then reverse counterclockwise. However, in this embodiment, two driving gears are used to separately control the rotation of the main gear in two directions, which can achieve seamless conversion, increase the switching speed of the main gear reversing, and improve work efficiency.

[0036] like Figure 1-2As shown, specifically, when the first driving gear 33 serves as the driving gear, the first rotating motor 32 drives the first driving gear 33 to rotate in the counterclockwise direction, the second rotating motor 34 does not work, the main gear 31 rotates in the clockwise direction driven by the first driving gear 33, and the main gear 31 drives the second driving gear 35 to rotate in the counterclockwise direction; when the second driving gear 35 serves as the driving gear, the second rotating motor 34 drives the second driving gear 35 to rotate clockwise, the first rotating motor 32 does not work, the main gear 31 rotates in the counterclockwise direction driven by the second driving gear 35, and the main gear 31 drives the first driving gear 33 to rotate in the clockwise direction.

[0037] like Figure 1-4 As shown, a plurality of annular grooves 11 are arranged axially on the inner wall of the housing 1 that fits the spindle 2. The annular grooves 11 extend horizontally along the circumference. The annular grooves 11 and the outer wall of the spindle 2 form a cavity structure for accommodating gas or liquid. The spindle 2 has a plurality of circulation channels 22. The input end of the circulation channel 22 is opened on the outer wall of the spindle 2 and corresponds to the cavity structure. The output end is opened on an end face of the spindle 2 away from the rotating mechanism 3. The circulation channel 22 is convenient for guiding the gas or liquid in the cavity structure to the material loading fixture on the lower end face of the spindle 2. The housing 1 has a plurality of guide channels 12. The output end of the guide channel 12 is opened in the annular groove 11, and the input end is opened on the outer wall of the housing 1, which is used to inject gas or liquid into the cavity structure. The number of circulation channels 22 and the number of guide channels 12 are both greater than or equal to the number of annular grooves 11, ensuring that there is a corresponding circulation channel 22 and guide channel 12 in each annular groove 12. The guide channel 12 on the shell 1 is separated from the flow channel 22 on the main shaft 2, so that air and liquid can continue to be introduced during the 360° rotation of the main shaft 2 relative to the shell 1. The channel replaces the pipeline in the device, which introduces space for piping and avoids interference caused by the pipeline during rotation.

[0038] like Figure 1-4 As shown, at least one set of corresponding guide channels 12, annular grooves 11 and circulation channels 22 are connected with gas, and the gas is blown to the material carrying fixture and the shaft hole position at the end of the main shaft 2 to blow out the processing debris to prevent accumulation, so as to improve the processing accuracy. At the same time, at least one set of corresponding guide channels 12, annular grooves 11 and circulation channels 22 are connected with liquid, and the liquid provides the hydraulic cylinder at the end of the material carrying fixture with the power of clamping and releasing, which is used to clamp the product.

[0039] like Figure 1-4 As shown, the inner wall of the housing 1 is also provided with a plurality of sealing grooves extending horizontally along the circumference, ensuring that there is a corresponding sealing groove on both axial sides of each annular groove, and each sealing groove is provided with a sealing ring 13. The sealing ring 13 plays a sealing role to prevent liquid or gas leakage during the rotation process.

[0040] like Figure 1-4 As shown, a brake mechanism 4 is arranged between the housing 1 and the spindle 2, for controlling the rotation stop of the spindle 2. In this embodiment, a horizontal outwardly protruding boss 24 is arranged on the outer wall of the spindle 2, the upper end of the boss 24 receives the bearing 23, and the lower end of the boss 24 is connected to the brake mechanism 4. The housing 1 includes a first housing 101 and a second housing 102 connected to each other in the axial direction, and an accommodating cavity is arranged between the first housing 101 and the second housing 102, and the brake mechanism 3 partially extends into the accommodating cavity.

[0041] like Figure 1-4 As shown, the brake mechanism 4 includes a dynamic brake pad 41, a static brake pad 42 and a brake piston 43. One end of the dynamic brake pad 41 is fixed to the lower end surface of the boss 24, and the other end extends horizontally into the accommodating cavity. The static brake pad 42 is correspondingly fixed to the upper end surface of the second shell 102. The dynamic brake pad 41 and the static brake pad 42 are parallel to each other and do not contact each other. They have overlapping braking parts in the vertical direction. A brake groove 14 is opened on the second shell 102 at the position corresponding to the braking part. The brake piston 43 is arranged in the brake groove 14. A ventilation channel 15 is correspondingly opened at the bottom of the brake groove 14, and the air inlet of the ventilation channel 15 is correspondingly opened on the outer wall of the second shell 102. Gas is introduced into the brake groove 14 from the air vent 15, and the gas exerts a certain force on the brake piston 43, pushing the brake piston 43 upward, and the upper end of the brake piston 43 pushes the static brake pad 42 to deform upward, so that the static brake pad 42 and the dynamic brake pad 41 contact and squeeze each other, and the dynamic brake pad 42 stops rotating after being subjected to friction and squeezing, completing the braking of the dynamic brake pad 42 and the spindle 2. Preferably, the lower end of the brake piston 43 has a notch protruding upward, and the upper end is set as a plane. The notch can be set to a V shape or a U shape, so that the impact of the gas below can be maximized, and the static brake pad is pushed upward to complete the braking.

[0042] like Figure 1-2 As shown, preferably, the housing 1 is also provided with a blocking component for blocking the splashing of lubricating oil during the processing. It includes an oil baffle plate 51, which is mounted on the upper end surface of the housing through a plurality of pillars 52. The oil baffle plate 51 corresponds to the upper part of the main gear 52 to prevent the splashing of lubricating oil during the rotation of the main gear 31. The upper end of the oil baffle plate 51 is also connected to a sleeve 53, and the inner diameter of the sleeve 53 is adapted to the inner diameter of the shaft hole 21. When processing long shaft products, the sleeve 53 can provide auxiliary support to adapt to products of more sizes.

[0043] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hollow rotating table device, characterized in that: Mainly include: case; A main shaft rotatably disposed in the housing, the main shaft having an axial hole penetrating along the axial direction of the center portion; A rotating mechanism, comprising a main gear fixed to the end of the main shaft and a driving assembly driving the main gear to rotate, wherein the driving assembly is correspondingly arranged at the end of the housing; Among them, a plurality of annular grooves are arranged axially on the inner wall of the shell body that is in contact with the main shaft, the annular grooves extend horizontally along the circumference, and form a cavity structure with the outer wall of the main shaft, the main shaft has a plurality of circulation channels, the input end of the circulation channel is opened on the outer side wall of the main shaft and corresponds to the cavity structure, and the output end is opened on an end face of the main shaft away from the rotating mechanism, the shell body has a plurality of guide channels, the input end of the guide channel is opened on the outer wall of the shell body, and the output end is opened in the annular groove, the number of the circulation channels and the guide channels are both greater than or equal to the number of the annular grooves, ensuring that each of the annular grooves has a corresponding port of the circulation channel and a port of the guide channel.

2. A hollow turntable device according to claim 1, characterized in that: The inner wall of the shell is also provided with a plurality of sealing grooves extending horizontally along the circumference, ensuring that there is a corresponding sealing groove on both axial sides of each annular groove, and a sealing ring is arranged in the sealing groove.

3. A hollow turntable device according to claim 1, characterized in that: The driving assembly includes a first rotating motor and a first driving gear configured at an output end of the first rotating motor, and the first driving gear is meshed and arranged at one side of the main gear.

4. A hollow turntable device according to claim 3, characterized in that: The driving assembly further includes a second rotating motor and a second driving gear disposed at an output end of the second rotating motor, wherein the second driving gear is meshed and disposed at one side of the main gear.

5. The hollow turntable device according to claim 1, characterized in that: A brake mechanism is disposed between the housing and the main shaft. The housing includes a first housing and a second housing that are axially connected. An accommodating cavity is disposed between the first housing and the second housing. Part of the brake mechanism is disposed in the accommodating cavity.

6. A hollow turntable device according to claim 5, characterized in that: The braking mechanism includes a dynamic brake pad, a static brake pad and a brake piston. One end of the dynamic brake pad is fixed to the outer wall of the main shaft, and the other end extends into the accommodating cavity. The static brake pad is fixed to the upper end surface of the second shell and placed in the accommodating cavity. The dynamic brake pad and the static brake pad are parallel to each other and not connected to each other, and have overlapping braking parts in the vertical direction.

7. A hollow turntable device according to claim 6, characterized in that: A brake groove is provided on the second shell at a position corresponding to the brake part, the brake piston is placed in the brake groove, a ventilation channel is provided at the bottom of the brake groove, and an air inlet end of the ventilation channel is correspondingly provided on the outer wall of the second shell.

8. The hollow turntable device according to claim 7, characterized in that: The lower end surface of the brake piston is provided with an upwardly protruding notch, and the notch can be correspondingly provided as a V-shaped structure or a U-shaped structure.

9. The hollow turntable device according to claim 1, characterized in that: It also includes a blocking component, which is correspondingly arranged above the main gear. The blocking component includes an oil baffle plate, and the oil baffle plate is mounted on the upper end surface of the shell through a plurality of pillars.

10. The hollow turntable device according to claim 9, characterized in that: The upper end of the oil baffle plate is also provided with a sleeve, and the inner diameter of the sleeve is matched with the inner diameter of the shaft hole.

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