Water immersion rotating single shaft

Abstract

The utility model provides a soaking rotating single shaft which comprises a box body, and a main sealing cover is arranged on one side of the box body and used for installing a chuck. The driving mechanism is located in the box body, and a harmonic reducer is installed at the output end. The transmission mechanism comprises a rotating main shaft for connecting the harmonic reducer and the chuck; the rotating main shaft is sleeved with a fixing base and an air path adapter base. One end of the fixed seat is connected with the gas path adapter, and the other end is connected with the harmonic reducer; one end of the gas circuit adapter is connected with the fixed seat, and the other end is connected with the main sealing cover; a first gas supply port and a second gas supply port are formed in the outer wall of the gas path adapter, and an annular groove is formed in the inner wall of the gas path adapter; the first air supply port and the second air supply port are respectively through holes; the annular grooves, the first air supply ports and the second air supply ports are alternately arranged; a sealing ring is also mounted in the annular groove; an independent runner hole is formed in the rotating main shaft; the input end of the runner hole is located between two adjacent sealing rings, and the output end is located at the end, close to the chuck, of the rotating spindle.

Description

Technical Field

[0001] This application relates to the field of electrical discharge machining technology, specifically to a water-immersed rotating single shaft. Background Technology

[0002] The EDM (Electrical Discharge Machining) process is an oil immersion process, so many molding machines need to be equipped with a high-precision oil-immersion rotary shaft that meets IP68 standards to process the workpiece.

[0003] Currently, the chucks configured on water-immersed rotary shafts are generally pneumatic chucks. Since pneumatic chucks are rotating parts and are in an oil-immersed environment, external air supply structures are not only inconvenient to install, but may also affect the machining process. Therefore, the above problems urgently need to be solved. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a water-immersed rotating single shaft.

[0005] This application provides a water-immersed rotating single shaft, including

[0006] The housing has a main sealing cover on one side for mounting the clamp;

[0007] A drive mechanism is located inside the housing, and a harmonic reducer is installed at its output end.

[0008] A transmission mechanism, the transmission mechanism including a rotating spindle for connecting the harmonic reducer and the chuck;

[0009] A fixed seat and an air passage adapter are respectively fitted onto the rotating spindle;

[0010] One end of the fixed base is connected to the air passage adapter and the other end is connected to the harmonic reducer, which is used to form a seal between the drive mechanism and the transmission mechanism.

[0011] One end of the gas circuit adapter is connected to the fixed base, and the other end is connected to the main sealing cover;

[0012] The outer wall of the air circuit adapter is provided with a first air supply port and a second air supply port arranged along the axial direction, and the inner wall is provided with an annular groove.

[0013] The first air supply port and the second air supply port are both through holes, and their extension directions are parallel to the radial direction of the air passage adapter.

[0014] The number of annular grooves includes three, which are arranged alternately between the first air supply port and the second air supply port;

[0015] A sealing ring is also installed in the annular groove for sealing against the rotating spindle;

[0016] The interior of the rotating spindle is provided with independent flow channel holes corresponding to the first air supply port and the second air supply port respectively.

[0017] The input end of the flow channel hole is located between two adjacent sealing rings, and the output end is located at one end of the rotating spindle near the chuck.

[0018] Furthermore,

[0019] The chuck is connected to the rotating spindle via a chuck connecting plate;

[0020] The chuck connecting plate is fixedly installed at the end of the rotating spindle and is rotatably connected to the main sealing cover;

[0021] The end of the main sealing cover away from the rotating spindle is provided with a rotating lip seal ring corresponding to the chuck connecting plate, which is used to form a seal with the chuck connecting plate.

[0022] Furthermore,

[0023] The clamp connecting plate is provided with matching connection holes corresponding to the two flow channel holes respectively;

[0024] The chuck is mounted to the chuck connecting plate via a chuck mounting plate;

[0025] One end of the chuck mounting plate is fixedly connected to the chuck connecting plate, and the other end is fixedly connected to the chuck. The plate has an air inlet for connecting the connecting hole and the chuck.

[0026] Furthermore,

[0027] The enclosure is also equipped with a protective mechanism;

[0028] The protection mechanism includes an air intake pipe and an oil drain pipe;

[0029] The air intake pipe includes three output ends, which are respectively connected to the fixed base and the air passage adapter, and communicate with the inner cavity of the housing to form positive pressure protection;

[0030] One end of the oil drain pipe extends to the bottom of the inner cavity of the box, and the other end is equipped with a vacuum generator.

[0031] Furthermore,

[0032] The air passage adapter is provided with a matching interface corresponding to the air intake pipe;

[0033] The interface is L-shaped, with the input end located on one radial side of the air path adapter and the output end located at the end of the air path adapter near the main sealing cover.

[0034] Furthermore,

[0035] The rotating spindle is a stepped shaft, with a relatively small diameter at the end near the harmonic reducer, and is connected to the fixed base via a bearing;

[0036] The mating position between the fixed seat and the air passage adapter is located at the diameter change point of the rotating spindle.

[0037] Furthermore,

[0038] The harmonic reducer is provided with a mounting bracket at the end away from the rotating main shaft;

[0039] A motor is fixedly mounted on the mounting bracket;

[0040] The motor is located below the harmonic reducer, and its output end is connected to the harmonic reducer via a synchronous belt.

[0041] Furthermore,

[0042] The side of the box away from the main sealing cover is an open structure, and a rear sealing cover can be detachably installed;

[0043] A sealing ring is embedded in the rear sealing cover to form a seal with the box body.

[0044] Furthermore,

[0045] The top of the box is also provided with a through hole;

[0046] The through hole is located on the side of the housing away from the main sealing cover, and is used for the air intake pipe and oil drain pipe to pass through.

[0047] The advantages and positive effects of this application are:

[0048] This technical solution provides a first air supply port and a second air supply port on the air circuit adapter, allowing the air source to be input inside the housing in a fixed connection. This is more convenient and reliable than the external rotating connection of the prior art. The rotating spindle has an annular groove on the outer ring and a flow channel hole inside, which can not only connect with the air supply port but also with the chuck, thus realizing the connection between the air supply port and the chuck. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the structure of a water-immersed rotating single axis provided in an embodiment of this application;

[0050] Figure 2 A structural schematic diagram of a cross-sectional view of a single-axis rotational submersion provided in an embodiment of this application;

[0051] Figure 3 This is a schematic diagram of the structure of the air path adapter for the water-immersed rotating single axis provided in the embodiments of this application.

[0052] The text labels in the diagram represent: 100-box body; 110-main sealing cover; 120-clamp; 130-rear sealing cover; 200-harmonic reducer; 210-mounting bracket; 220-motor; 230-synchronous belt; 300-rotating spindle; 310-fixed base; 320-air circuit adapter; 321-interface; 322-first air supply port; 323-second air supply port; 330-clamp connecting plate; 340-rotating lip seal ring; 350-clamp mounting plate; 400-air inlet pipe; 410-oil drain pipe; 411-vacuum generator. Detailed Implementation

[0053] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0054] Please refer to Figure 1-3 This embodiment provides a water-immersed rotary single shaft, including a housing 100, a main sealing cover 110 on one side of the housing 100 for mounting a chuck 120; a drive mechanism located inside the housing 100, with a harmonic reducer 200 mounted at its output end; and a transmission mechanism including a rotary spindle 300 for connecting the harmonic reducer 200 and the chuck 120; a fixed seat 310 and an air passage adapter 320 are respectively fitted on the rotary spindle 300; one end of the fixed seat 310 is connected to the air passage adapter 320, and the other end is connected to the harmonic reducer 200. A 00 connection is used to form a seal between the drive mechanism and the transmission mechanism; one end of the air circuit adapter 320 is connected to the fixed base 310 and the other end is connected to the main sealing cover 110 for supplying air to the chuck; the protection mechanism includes an air inlet pipe 400 and an oil outlet pipe 410; the air inlet pipe 400 includes three output ends, which are respectively connected to the fixed base 310 and the air circuit adapter 320, and communicate with the inner cavity of the housing 100 for forming positive pressure protection; one end of the oil outlet pipe 410 extends to the bottom of the inner cavity of the housing 100, and a vacuum generator 411 is installed at the other end.

[0055] In this embodiment, the chuck 120 is mounted on the outside of the housing 100 via the rotating spindle 300, and the docking point with the housing 100 is sealed by the main sealing cover 110; the rotating spindle 300 is connected to the housing 100 via the fixed seat 310, and the end away from the chuck 120 is driven by the harmonic reducer 200.

[0056] In this embodiment, one end of the fixed seat 310 is fixed and sealed to the harmonic reducer 200 via a flange, and the other end is connected to the main sealing cover 110 via an air passage adapter 320. The air passage adapter 320 is sleeved on the rotating spindle 300, with one end fitted and sealed to the main sealing cover 110, and the other end abutting against the end of the fixed seat 310.

[0057] In this embodiment, the air inlet pipe 400 penetrates the housing 100, with its input end connected to a high-pressure air source and its output end connected to a fixed base 310, an air path adapter 320, and the inner cavity of the housing 100 via a tee. The connection to the inner cavity of the housing 100 creates positive pressure inside the housing 100, thereby counteracting external hydraulic pressure on the sealing ring and improving the sealing effect. The connection to the air path adapter 320 creates positive pressure at the connection between the main sealing cover 110 and the housing 100, thereby improving the sealing effect.

[0058] In this embodiment, the bottom of the air circuit adapter 320 is also provided with a first oil drain hole; one end of the first oil drain hole is connected to the positive pressure protection area between the air circuit adapter 320 and the main sealing cover 110, and the other end is connected to the inner cavity of the housing 100, so as to maintain positive pressure protection and allow for rapid discharge after oil leakage occurs; at the same time, the bottom of the fixed seat 310 is also provided with a second oil drain hole. When the oil leakage between the air circuit adapter 320 and the main sealing cover 110 cannot be discharged quickly, the oil will continue to flow into the fixed seat 310. At this time, the second oil drain hole can assist in oil discharge, thereby preventing it from entering the harmonic reducer 200.

[0059] In this embodiment, the housing 100 is also provided with an oil drain pipe 410 that connects the inside and outside; the input end of the oil drain pipe 410 is located inside the housing 100 and extends to the bottom of the housing 100, and the output end is located outside the housing 100 and is equipped with a vacuum generator 411. When oil leaks inside the housing 100, it can be discharged to the outside immediately, so that workers can easily find it.

[0060] In this embodiment, a liquid level sensor is also provided inside the housing 100. The height detected by the liquid level sensor is relatively higher than the oil discharge height of the oil drain pipe 410. When the oil leakage rate exceeds the oil discharge rate, the liquid level will rise, thereby triggering the alarm of the liquid level sensor.

[0061] In a preferred embodiment, the air path adapter 320 is provided with a docking interface 321 corresponding to the air intake pipe 400; the docking interface 321 is L-shaped, with the input end located on one side of the air path adapter 320 along the radial direction and the output end located at one end of the air path adapter 320 near the main sealing cover 110.

[0062] In a preferred embodiment, the outer wall of the air circuit adapter 320 is provided with a first air supply port 322 and a second air supply port 323 arranged axially, and the inner wall is provided with an annular groove; the first air supply port 322 and the second air supply port 323 are through holes, and their extension direction is parallel to the radial direction of the air circuit adapter 320; the number of annular grooves includes three, which are arranged alternately with the first air supply port 322 and the second air supply port 323; a sealing ring is also installed in the annular groove for sealing against the rotating spindle 300.

[0063] In this embodiment, the first air supply port 322 and the second air supply port 323 are respectively connected to an external high-pressure air source through hoses, and are used to independently supply air for the switching and detection of the clamp 120.

[0064] In a preferred embodiment, the interior of the rotating spindle 300 is provided with independent flow channel holes corresponding to the first air supply port 322 and the second air supply port 323; the input end of the flow channel hole is located between two adjacent sealing rings, and the output end is located at one end of the rotating spindle 300 near the chuck 120.

[0065] In a preferred embodiment, the chuck 120 is connected to the rotating spindle 300 via a chuck connecting plate 330; the chuck connecting plate 330 is fixedly installed at the end of the rotating spindle 300 and is rotatably connected to the main sealing cover 110; the end of the main sealing cover 110 away from the rotating spindle 300 is provided with a rotating lip seal ring 340 corresponding to the chuck connecting plate 330, for forming a seal with the chuck connecting plate 330.

[0066] In a preferred embodiment, the chuck connecting plate 330 is provided with matching connecting holes corresponding to the two flow channel holes; the chuck 120 is installed on the chuck connecting plate 330 through the chuck mounting plate 350; one end of the chuck mounting plate 350 is fixedly connected to the chuck connecting plate 330, and the other end is fixedly connected to the chuck 120, and the inside is provided with an air inlet for connecting the connecting holes and the chuck 120.

[0067] In a preferred embodiment, the rotating spindle 300 is a stepped shaft, with a relatively small diameter at the end near the harmonic reducer 200, and is connected to the fixed seat 310 via a bearing; the mating position between the fixed seat 310 and the air passage adapter 320 is located at the diameter change point of the rotating spindle 300.

[0068] In this embodiment, the rotating spindle 300 and the fixed seat 310 are connected by bearings. There are two bearings, which are respectively fitted at the diameter change of the rotating spindle 300.

[0069] In a preferred embodiment, a mounting bracket 210 is provided at the end of the harmonic reducer 200 away from the rotating spindle 300; a motor 220 is fixedly mounted on the mounting bracket 210; the motor 220 is located below the harmonic reducer 200, and its output end is connected to the harmonic reducer 200 via a synchronous belt 230.

[0070] In this embodiment, the extension direction of the mounting bracket 210 is perpendicular to the axial direction of the rotating spindle 300; the motor 220 is fixedly mounted on the mounting bracket 210 and located below the harmonic reducer 200, and is connected to the harmonic reducer 200 via a synchronous belt 230.

[0071] In a preferred embodiment, the side of the housing 100 away from the main sealing cover 110 is an open structure, and a rear sealing cover 130 is detachably installed thereon; a sealing ring is embedded in the rear sealing cover 130 to form a seal with the housing 100.

[0072] In this embodiment, the rear sealing cover 130 is detachably connected to the housing 100 and is fixed by bolts; the four corners of the housing 100 are provided with matching threaded holes corresponding to the bolts; the rear sealing cover 130 is provided with matching through holes corresponding to the bolts.

[0073] In a preferred embodiment, the top of the housing 100 is also provided with a through hole; the through hole is located on the side of the housing 100 away from the main sealing cover 110, and is used for the air intake pipe 400 and the oil drain pipe 410 to pass through.

[0074] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A water-immersed rotating single shaft, characterized in that, include: A housing (100) is provided on one side of which a main sealing cover (110) is provided for mounting a clamp (120). A drive mechanism is located inside the housing (100), and a harmonic reducer (200) is installed at the output end. The transmission mechanism includes a rotating spindle (300) for connecting the harmonic reducer (200) and the chuck (120). A fixed seat (310) and an air passage adapter seat (320) are respectively fitted on the rotating spindle (300); One end of the fixed seat (310) is connected to the air passage adapter (320), and the other end is connected to the harmonic reducer (200), which is used to form a seal between the drive mechanism and the transmission mechanism; One end of the gas path adapter (320) is connected to the fixed base (310), and the other end is connected to the main sealing cover (110); The outer wall of the air passage adapter (320) is provided with a first air supply port (322) and a second air supply port (323) arranged along the axial direction, and the inner wall is provided with an annular groove; The first air supply port (322) and the second air supply port (323) are through holes, and their extension directions are parallel to the radial direction of the air passage adapter (320); The number of annular grooves includes three, which are arranged alternately between the first air supply port (322) and the second air supply port (323); A sealing ring is also installed in the annular groove for sealing against the rotating spindle (300); The interior of the rotating spindle (300) is provided with independent flow channel holes corresponding to the first air supply port (322) and the second air supply port (323); The input end of the flow channel hole is located between two adjacent sealing rings, and the output end is located at one end of the rotating spindle (300) near the chuck (120).

2. The water-immersed rotating single shaft according to claim 1, characterized in that, The chuck (120) is connected to the rotating spindle (300) via a chuck connecting plate (330); The chuck connecting plate (330) is fixedly installed at the end of the rotating spindle (300) and is rotatably connected to the main sealing cover (110); The main sealing cover (110) is provided with a rotating lip seal (340) at the end away from the rotating spindle (300) corresponding to the chuck connecting plate (330), for forming a seal with the chuck connecting plate (330).

3. The water-immersed rotating single shaft according to claim 2, characterized in that, The clamp connecting plate (330) is provided with matching connecting holes corresponding to the two flow channel holes respectively; The chuck (120) is mounted to the chuck connecting plate (330) via a chuck mounting plate (350); One end of the clamp mounting plate (350) is fixedly connected to the clamp connecting plate (330), and the other end is fixedly connected to the clamp (120). An air inlet is provided inside for connecting the connecting hole and the clamp (120).

4. The water-immersed rotating single shaft according to claim 1, characterized in that, The enclosure (100) is also equipped with a protective mechanism; The protection mechanism includes an air intake pipe (400) and an oil drain pipe (410). The air intake pipe (400) includes three output ends, which are respectively connected to the fixed base (310) and the air passage adapter (320), and communicate with the inner cavity of the housing (100) to form positive pressure protection; One end of the oil drain pipe (410) extends to the bottom of the inner cavity of the housing (100), and the other end is equipped with a vacuum generator (411).

5. The water-immersed rotating single shaft according to claim 4, characterized in that, The air circuit adapter (320) is provided with a connection interface (321) corresponding to the air inlet pipe (400). The interface (321) is L-shaped, with the input end located on one radial side of the air path adapter (320) and the output end located at one end of the air path adapter (320) near the main sealing cover (110).

6. The water-immersed rotating single shaft according to claim 1, characterized in that, The rotating spindle (300) is a stepped shaft, with a relatively small diameter at the end near the harmonic reducer (200), and is connected to the fixed seat (310) via a bearing; The mating position of the fixed seat (310) and the air passage adapter seat (320) is located at the diameter change point of the rotating main shaft (300).

7. The water-immersed rotating single shaft according to claim 1, characterized in that, The harmonic reducer (200) has a mounting bracket (210) at the end away from the rotating main shaft (300); A motor (220) is fixedly mounted on the mounting bracket (210); The motor (220) is located below the harmonic reducer (200), and its output end is connected to the harmonic reducer (200) via a synchronous belt (230).

8. The water-immersed rotating single shaft according to claim 1, characterized in that, The side of the housing (100) away from the main sealing cover (110) is an open structure, and a rear sealing cover (130) can be detachably installed. A sealing ring is embedded in the rear sealing cover (130) to form a seal with the housing (100).

9. The water-immersed rotating single shaft according to claim 4, characterized in that, The top of the box (100) is also provided with a through hole; The through hole is located on the side of the housing (100) away from the main sealing cover (110) and is used for the air intake pipe (400) and the oil drain pipe (410) to pass through.

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