CN113000868B - Assembly for electric spindle with hydraulic cylinder and central cooling function - Google Patents
Assembly for electric spindle with hydraulic cylinder and central cooling function Download PDFInfo
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- CN113000868B CN113000868B CN202110271248.1A CN202110271248A CN113000868B CN 113000868 B CN113000868 B CN 113000868B CN 202110271248 A CN202110271248 A CN 202110271248A CN 113000868 B CN113000868 B CN 113000868B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses an electric spindle assembly with a hydraulic cylinder and a central cooling function, which comprises an end cover, wherein a first channel communicated with a containing cavity is arranged on the end cover, a second channel communicated with the containing cavity is arranged on an outer shell, a piston of the hydraulic cylinder can move along the axial direction of an inner shell through introducing hydraulic oil from the first channel or the second channel, a third channel is sequentially communicated with a fourth channel, a fifth channel and a seventh channel to form a liquid inlet passage, an eighth channel is sequentially communicated with a sixth channel, a ninth channel and a tenth channel to form a liquid outlet passage, the twelfth channel is communicated with the liquid outlet passage through a gap which is in conflict between a limiting sleeve and a spacer, and the thirteenth channel is communicated with the liquid inlet passage through a gap which is in conflict between a raised shaft and a top end gland. According to the invention, the hydraulic cylinder piston of the control broach device is combined with the central cooling structure for cooling the inside of the electric spindle, so that the integrated structure is more compact, the cooling liquid can be fed into and discharged from a single channel, and the cooling efficiency is further improved.
Description
Technical Field
The invention relates to the technical field of electric spindles, in particular to an electric spindle assembly with a hydraulic cylinder and a central cooling function.
Background
In the prior art, the hydraulic device for controlling the electric spindle pull rod and the electric spindle cooling device have complex structures, are assembled with the electric spindle respectively, occupy large space and are inconvenient to install; meanwhile, the electric spindle cooling device can only cool the spindle shell, but cannot cool the inside of the electric spindle rotating at a high speed, so that the internal temperature rise of the electric spindle is large during high-speed operation, the overall performance of the spindle is reduced, and the service life of the electric spindle is short.
Disclosure of Invention
The present invention aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the invention provides the assembly for the electric spindle with the hydraulic cylinder and the central cooling, which can save the occupied space of the assembly, make the whole structure more compact, simultaneously cool the internal structure of the assembly and improve the service life and reliability of the electric spindle using the assembly.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an electric spindle assembly with a hydraulic cylinder and with central cooling, comprising: the hydraulic cylinder comprises an end cover, an inner shell, an outer shell, a hydraulic cylinder piston, a top gland, a sealing disc, a limit sleeve, a spacer bush, a rotary connecting piece, a supporting ring and a rotary shaft, wherein one end of the end cover is provided with a protruding part, the end face of the protruding part is provided with a concave part, the outer shell is provided with a first cavity, the inner shell is provided with a second cavity, the inner shell is arranged in the outer shell, the inner shell and the outer shell are coaxially arranged to form a containing cavity for containing the hydraulic cylinder piston, one end of the end cover with the protruding part stretches into the second cavity, the end cover is fixedly connected with the end faces of the inner shell and the outer shell respectively, a first channel communicated with the containing cavity is arranged on the end cover opposite to the hydraulic cylinder piston, a first shaft shoulder facing one side of the end cover is arranged on the inner wall of the outer shell, one end of the hydraulic cylinder piston close to the end cover is provided with a protruding block, two sides of the protruding block are respectively in sliding fit with the inner wall of the outer shell and the outer wall of the inner shell, the protruding block is smaller than the distance between the first shaft shoulder and the end cover, the outer shell is provided with a second channel communicated with the second channel along the axial direction of the hydraulic cylinder piston, and the second channel can move along the first channel and the second channel;
the second cavity is internally and sequentially provided with a top end gland, a sealing disc, a limiting sleeve, a spacer bush, a rotary connecting piece, a supporting ring and a rotating shaft from one end fixed with an end cover to the other end, wherein the top end gland is fixedly connected to a concave part, the sealing disc is fixedly connected to a convex part, the limiting sleeve is fixedly connected with the sealing disc, the spacer bush is abutted against the limiting sleeve, a convex shaft is arranged at the position of a central shaft of the rotary connecting piece, the convex shaft is abutted against the top end gland, the rotary connecting piece is fixedly connected with the spacer bush, and a supporting ring used for limiting the rotary connecting piece to move away from one end of the end cover is sleeved between the rotary connecting piece and the inner wall of the inner shell; one end of the rotating shaft extends into the second cavity from the opposite end of the end cover fixed on the inner shell and is fixedly connected with the rotating connecting piece, the outer wall of the rotating shaft is rotationally connected with the inner wall of the inner shell through a rotating device, and the rotating device plays a role in axially limiting the rotating shaft;
the end cover is provided with a third channel, the top end gland is provided with a fourth channel, the rotary connecting piece is provided with a fifth channel and a sixth channel which are mutually independent, the rotary shaft is provided with a seventh channel and an eighth channel which are mutually independent, the spacer sleeve is arranged on the protruding shaft and forms a ninth channel, the spacer sleeve is arranged on the rotary connecting piece and forms a tenth channel, the end cover is also provided with an eleventh channel, the inner shell is also provided with a twelfth channel and a thirteenth channel which are used for communicating the eleventh channel and the second cavity, the third channel is sequentially communicated with the fourth channel, the fifth channel and the seventh channel and forms a liquid inlet channel, the eighth channel is sequentially communicated with the sixth channel, the ninth channel and the tenth channel to form a liquid outlet channel, the twelfth channel is communicated with the liquid outlet channel through a gap which is mutually inconsistent between the spacer sleeve and the spacer sleeve, and the thirteenth channel is communicated with the liquid inlet channel through a gap which is mutually inconsistent between the protruding shaft and the top end gland.
Further, a first threaded limit post is arranged on the top end gland, the concave part is provided with a first threaded hole matched with the first limit post, the first limit post is in threaded connection with the first threaded hole, and a first spring is sleeved on the first limit post between the top end gland and the end cover.
Further, a second threaded limit post is arranged on the limit sleeve, a second threaded hole matched with the second limit post is formed in the seal disc, the second limit post is in threaded connection with the second threaded hole, and a second spring is sleeved on the second limit post between the limit sleeve and the seal disc.
Further, a first composite sealing element is arranged between the protruding shaft and the top gland, the first composite sealing element is divided into two layers of bodies, the two layers of bodies of the first composite sealing element are fixedly connected with the protruding shaft and the top gland respectively, and the two layers of bodies are abutted against each other.
Further, a second composite sealing piece is arranged between the limiting sleeve and the spacer, the second composite sealing piece is divided into two layers of bodies, the two layers of bodies of the second composite sealing piece are fixedly connected with the limiting sleeve and the spacer respectively, and the two layers of bodies are abutted against each other.
Further, the first composite sealing element and the second composite sealing element are made of ceramic materials.
Further, the rotating device comprises a baffle ring, a gland, a first bearing, an annular retainer ring and a second bearing, wherein the first bearing and the second bearing are arranged between the rotating shaft and the inner wall of the inner shell, the annular retainer ring is arranged between the first bearing and the second bearing, the first bearing is in contact with a shaft shoulder arranged on the outer wall of the rotating shaft, the baffle ring is in threaded connection with the inner wall of the inner shell, the gland is in threaded connection with the outer wall of the rotating shaft, and the baffle ring and the gland are both used for pressing the second bearing, the annular retainer ring and the first bearing towards the direction that the rotating shaft is close to the end cover.
Further, the hydraulic cylinder further comprises a first wear-resistant ring and a second wear-resistant ring, wherein the first wear-resistant ring is arranged between the inner shell and the hydraulic cylinder piston, and the second wear-resistant ring is arranged between the outer shell and the hydraulic cylinder piston.
Further, still include first oil seal, second oil seal and third oil seal, first oil seal is located between protruding piece and the inner shell outer wall, the second oil seal is located between protruding piece and the outer shell inner wall, the third oil seal is located between outer shell inner wall and the pneumatic cylinder piston, and be located first shaft shoulder is kept away from one side of end cover.
Further, the sixth channels are arranged in a plurality, the sixth channels are arranged around the fifth channels in an annular array, the eighth channels are also arranged in a plurality, the number of the eighth channels is equal to that of the sixth channels, and the plurality of the sixth channels are correspondingly communicated with the plurality of the eighth channels.
Compared with the prior art, the invention discloses an electric spindle assembly with a hydraulic cylinder and central cooling, which has the characteristic of integration, and the hydraulic cylinder piston used for controlling a broach device is combined with the central cooling structure used for cooling the inside of the electric spindle, so that the integrated structure is more compact, the occupied space is small, the integrated structure is simple, the assembly is convenient, and the structure complexity is low; meanwhile, due to the arrangement of a plurality of sixth channels and eighth channels, a cooling liquid can enter and exit from a single channel, so that the cooling efficiency is improved, the inside of the electric spindle is cooled aiming at two large heat source motors and bearings in the electric spindle, the heating condition in the electric spindle is greatly improved, and the service life of the electric spindle is prolonged; and the first composite sealing piece and the second composite sealing piece are made of ceramic materials, so that friction can be reduced, abrasion of the parts is reduced, and sealing performance is ensured when the parts on two sides of the first composite sealing piece and the second composite sealing piece rotate relatively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of the connection of an electric spindle with a hydraulic cylinder and an electric spindle assembly with center cooling provided by the invention;
FIG. 2 is an enlarged view of part of the A of FIG. 1 provided by the present invention;
FIG. 3 is a schematic view of the structure of the inner housing according to the present invention;
FIG. 4 is a schematic view of an end cap according to the present invention;
FIG. 5 is a schematic view of a structure of a rotating shaft according to the present invention;
FIG. 6 is a schematic view of the structure of the outer casing according to the present invention;
fig. 7 is a schematic structural diagram of an electric spindle provided by the invention.
Wherein: 1 is an end cover; 2 is a top end gland; 3 is a first limit column; 4 is a first spring; 5 is an inner shell; 6 is a first composite seal; 7 is a sealing disk; 8 is a limit sleeve; 9 is a second spring; 10 is a second spacing post; 11 is a second composite seal; 12 is a spacer bush; 13 is a rotary connector; 14 is a support ring; 15 is a rotation axis; 16 is a first bearing; 17 is an annular retainer ring; 18 is a second bearing; 19 is a baffle ring; 20 is a gland; 21 is an outer shell; 22 is a second wear ring; 23 is a third oil seal ring; 24 is a first wear ring; 25 is a hydraulic cylinder piston; 26 is a second oil seal ring; 27 is a first oil seal ring; 28 is a boss; 29 is a concave portion; 30 is a second cavity; 31 is a first channel; 32 is a second channel; 33 is a third channel; 34 is a fourth channel; 35 is a fifth channel; 36 is the sixth channel; 37 is the seventh channel; 38 is the eighth channel; 39 is a ninth channel; 40 is a tenth channel; 41 is the eleventh channel; 42 is the twelfth channel; 43 is thirteenth channel; 44 is a fourteenth channel; 45 is the fifteenth channel; 46 is a sixteenth channel; 47 is the seventeenth channel; 48 is the eighteenth channel; 49 is a sliding shaft; 50 is an electric spindle; 51 is a water diversion sleeve; and 52 is a main shaft sealing cover.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, an embodiment of the present invention discloses an electric spindle assembly with a hydraulic cylinder and with center cooling, comprising: the hydraulic cylinder comprises an end cover 1, an inner shell 5, an outer shell 21, a hydraulic cylinder piston 25, a top gland 2, a sealing disc 7, a limit sleeve 8, a spacer 12, a rotary connecting piece 13, a supporting ring 14 and a rotary shaft 15, wherein a boss 28 is arranged at one end of the end cover 1, a concave portion 29 is arranged at the end face of the boss 28, the outer shell 21 is provided with a first cavity, the inner shell 5 is provided with a second cavity 30, the inner shell 5 is arranged inside the outer shell 21 and coaxially forms a containing cavity for containing the hydraulic cylinder piston 25, one end of the end cover 1 provided with the boss 28 extends into the second cavity 30, the end cover 1 is fixedly connected with the end faces of the inner shell 5 and the outer shell 21 respectively, a first channel 31 communicated with the containing cavity is arranged at a position on the end cover 1 opposite to the hydraulic cylinder piston 25, a boss is arranged on the inner wall of the outer shell 21 and provided with a first shaft shoulder facing one side of the end cover 1, two sides of the boss are respectively slidably matched with the inner wall of the outer shell 21 and the outer wall of the inner shell 5, the boss is smaller than the length of the first shaft shoulder is smaller than the first channel 31 and is positioned in the second channel 32 along the axial direction of the first channel 1 or the second channel 32 and can be communicated with the inner shell 25 along the axial direction 32.
The second cavity 30 is internally and sequentially provided with a top end gland 2, a sealing disc 7, a limit sleeve 8, a spacer bush 12, a rotary connecting piece 13, a supporting ring 14 and a rotary shaft 15 from one end, on which the end cover 1 is fixed, of the second cavity, the top end gland 2 is fixedly connected to a concave part 29, the sealing disc 7 is fixedly connected to a convex part 28, the limit sleeve 8 is fixedly connected with the sealing disc 7, the spacer bush 12 is abutted against the limit sleeve 8, a convex shaft is arranged at the center shaft position of the rotary connecting piece 13, the convex shaft is abutted against the top end gland 2, the rotary connecting piece 13 is fixedly connected with the spacer bush 12, and a supporting ring 14 for limiting the rotary connecting piece 13 to move towards one end far away from the end cover 1 is sleeved between the rotary connecting piece 13 and the inner wall of the inner shell 5; one end of the rotary shaft 15 is fixedly connected with the rotary connecting piece 13 by stretching into the second cavity 30 from the opposite end of the end cover 1 fixed on the inner shell 5, the other end of the rotary shaft 15 is connected with the sliding shaft 49, the other end of the sliding shaft 49 extends into the cavity of the electric spindle 50, one end of the sliding shaft 49 far away from the rotary shaft 15 is connected with the inner wall of the electric spindle 50 through the water separating sleeve 51, one end of the electric spindle 50 close to the rotary shaft 15 is sealed through the spindle sealing cover 52, the outer wall of the rotary shaft 15 is rotationally connected with the inner wall of the inner shell 5 through the rotating device, the rotating device plays an axial limiting role on the rotary shaft 15, wherein the rotating device comprises a baffle ring 19, a gland 20, a first bearing 16, an annular retainer ring 17 and a second bearing 18, the first bearing 16 and the second bearing 18 are arranged between the rotary shaft 15 and the inner wall of the inner shell 5, the annular retainer 17 is arranged between the first bearing 16 and the second bearing 18, the first bearing 16 is in contact with a shaft shoulder arranged on the outer wall of the rotary shaft 15, the baffle ring 19 is in threaded connection with the inner wall of the inner shell 5, the gland 20 is in threaded connection with the outer wall of the rotary shaft 15, and the baffle ring 19 and the gland 20 are used for pressing the second bearing 18, the annular retainer 17 and the first bearing 16 and the second bearing 18 are close to the end cover 1.
The end cover 1 is provided with a third channel 33, the top end gland 2 is provided with a fourth channel 34, the rotary connecting piece 13 is provided with a fifth channel 35 and a sixth channel 36 which are mutually independent, the rotary shaft 15 is provided with a seventh channel 37 and an eighth channel 38 which are mutually independent, the spacer bush 12 is sleeved on the protruding shaft and forms a ninth channel 39, the limit bush 8 is sleeved on the rotary connecting piece 13 and forms a tenth channel 40, the end cover 1 is also provided with an eleventh channel 41, the inner shell 5 is also provided with a twelfth channel 42 and a thirteenth channel 43 which are used for communicating the eleventh channel 41 with the second cavity 30, the third channel 33 is sequentially communicated with the fourth channel 34, the fifth channel 35 and the seventh channel 37 and forms a liquid inlet passage, the eighth channel 38 is sequentially communicated with the sixth channel 36, the ninth channel 39 and the tenth channel 40 forms a liquid outlet passage, the twelfth channel 42 is communicated with the liquid outlet passage through a gap which is in conflict between the limit bush 8 and the spacer bush 12, the thirteenth channel 43 communicates with the liquid inlet passage through a gap between the protruding shaft and the tip gland 2, specifically, a part of the cooling liquid in the liquid inlet passage flows out through a gap between the tip gland 2 and the rotary connector 13, flows out through a gap between the tip gland 2 and the protruding portion 28 of the end cap 1, flows out to the thirteenth channel 43 on the inner housing 5 through a gap between the end cap 1 and the inner housing 5, finally flows out from the eleventh channel 41 on the end cap 1, the cooling liquid in the liquid outlet passage is divided into two paths, one path flows out from a gap between the spacer sleeve 8 and the spacer sleeve 12, finally flows out from the twelfth channel 42 provided on the inner housing 5 to the eleventh channel 41 on the end cap 1, finally flows out from the tenth channel 40, flows out from a gap between the sealing disc 7 and the end cap 1 to a gap between the end cap 1 and the inner housing 5, and finally flows out from the thirteenth channel 43 to the eleventh channel 41, meanwhile, the sliding shaft 49 is provided with a fourteenth channel 44, a fifteenth channel 45 and a sixteenth channel 46, the water diversion sleeve 51 is provided with a seventeenth channel 47, the electric main shaft 50 is provided with an eighteenth channel 48, one end of the fourteenth channel 44 is communicated with the seventh channel 37 on the rotary shaft 15, the other end of the fourteenth channel 44 is communicated with the seventeenth channel 47 on the water diversion sleeve 51 through the fifteenth channel 45, the eighteenth channel 48 on the electric main shaft 50 is used for communicating the seventeenth channel 47 on the water diversion sleeve 51 with one end of the sixteenth channel 46 on the sliding shaft 49, and the other end of the sixteenth channel 46 is used for communicating with the eighth channel 38 on the rotary shaft 15, namely, a liquid inlet passage is communicated with a liquid outlet passage sequentially through the fourteenth channel 44, the fifteenth channel 45, the seventeenth channel 47, the eighteenth channel 48 and the sixteenth channel 46 to form a circulation loop.
In this embodiment, the sixth channels 36 are four, the fifth channels 35 are disposed at the center axis of the rotary connecting member 13, the four sixth channels 36 are disposed around the fifth channels 35 in a ring-shaped array, the eighth channels 38 are also four, the four sixth channels 36 are correspondingly communicated with the four eighth channels 38, and similarly, the sixteenth channels 46 and the eighteenth channels 48 are also four, and each sixteenth channel 46 is used for communicating the eighth channel 38 on the corresponding rotary shaft 15 with the eighteenth channel 48 on the electric spindle 50. In other embodiments, the sixth channel 36, the eighth channel 38, the sixteenth channel 46 and the eighteenth channel 48 may be provided with other numbers according to actual needs, and the specific numbers are not particularly limited herein.
In the above embodiment, the threaded first limiting post 3 is mounted on the top end gland 2, the recess 29 has a first threaded hole adapted to the first limiting post 3, the first limiting post 3 is in threaded connection with the first threaded hole, the first limiting post 3 between the top end gland 2 and the end cover 1 is sleeved with the first spring 4, the first limiting post 3 can relatively fix the positions of the top end gland 2 and the end cover 1, and the effect of the first spring 4 can buffer the vibration occurring in the rotation process of the rotary connector 13, the rotary shaft 15 and the like, and meanwhile, the top end gland 2 tends to have an elastic force in the direction of the rotary connector 13; the second limiting post 10 with threads is arranged on the limiting sleeve 8, the sealing disc 7 is provided with a second threaded hole matched with the second limiting post 10, the second limiting post 10 is in threaded connection with the second threaded hole, a second spring 9 is sleeved on the second limiting post 10 between the limiting sleeve 8 and the sealing disc 7, the second limiting post 10 can relatively fix the positions of the sealing disc 7 and the limiting sleeve 8, the second spring 9 can buffer vibration generated in the rotating process of the rotating parts such as the rotating shaft 15 and the rotating connecting piece 13, and meanwhile the limiting sleeve 8 is provided with an elastic force tending to the direction of the spacing sleeve 12.
Specifically, a first composite sealing element 6 is arranged between a protruding shaft and a top end gland 2 of a rotary connecting piece 13, the first composite sealing element 6 is divided into two layers of bodies, the two layers of bodies of the first composite sealing element 6 are respectively and fixedly connected with the protruding shaft and the top end gland 2, the two layers of bodies are abutted against each other, a second composite sealing element 11 is arranged between a limiting sleeve 8 and a spacer 12, the second composite sealing element 11 is divided into two layers of bodies, the two layers of bodies of the second composite sealing element 11 are respectively and fixedly connected with the limiting sleeve 8 and the spacer 12, the two layers of bodies are abutted against each other, the first composite sealing element 6 and the second composite sealing element 11 are made of ceramic materials, and the two layers of bodies are respectively fixed on two mutually abutted relative rotating pieces, namely the top end gland 2, the rotary connecting piece 13, the limiting sleeve 8, the spacer 12 and the like, a lubricating effect can be achieved between the two layers of bodies in the rotating process of rotating parts such as the rotary connecting piece 13 and the rotary shaft 15, the high-speed rotating efficiency of the rotary part is guaranteed, and the cooling liquid is prevented from leaking outside.
The assembly for an electric spindle 50 with a hydraulic cylinder and with central cooling disclosed in the above embodiments further comprises a first wear ring 24 and a second wear ring 22, the first wear ring 24 being arranged between the inner housing 5 and the hydraulic cylinder piston 25, the second wear ring 22 being arranged between the outer housing 21 and the hydraulic cylinder piston 25.
The assembly for the electric spindle 50 with the hydraulic cylinder and the central cooling disclosed in the above embodiment further comprises a first oil seal ring 27, a second oil seal ring 26 and a third oil seal ring 23, wherein the first oil seal ring 27 is arranged between the protruding block and the outer wall of the inner housing 5, the second oil seal ring 26 is arranged between the protruding block and the inner wall of the outer housing 21, and the third oil seal ring 23 is arranged between the inner wall of the outer housing 21 and the piston 25 of the hydraulic cylinder and is positioned on one side of the first shaft shoulder far away from the end cover 1.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An electric spindle assembly with a hydraulic cylinder and with central cooling, comprising: the hydraulic cylinder comprises an end cover, an inner shell, an outer shell, a hydraulic cylinder piston, a top gland, a sealing disc, a limit sleeve, a spacer bush, a rotary connecting piece, a supporting ring and a rotary shaft, wherein one end of the end cover is provided with a protruding part, the end face of the protruding part is provided with a concave part, the outer shell is provided with a first cavity, the inner shell is provided with a second cavity, the inner shell is arranged in the outer shell, the inner shell and the outer shell are coaxially arranged to form a containing cavity for containing the hydraulic cylinder piston, one end of the end cover with the protruding part stretches into the second cavity, the end cover is fixedly connected with the end faces of the inner shell and the outer shell respectively, a first channel communicated with the containing cavity is arranged on the end cover opposite to the hydraulic cylinder piston, a first shaft shoulder facing one side of the end cover is arranged on the inner wall of the outer shell, one end of the hydraulic cylinder piston close to the end cover is provided with a protruding block, two sides of the protruding block are respectively in sliding fit with the inner wall of the outer shell and the outer wall of the inner shell, the protruding block is smaller than the distance between the first shaft shoulder and the end cover, the outer shell is provided with a second channel communicated with the second channel along the axial direction of the hydraulic cylinder piston, and the second channel can move along the first channel and the second channel;
the second cavity is internally and sequentially provided with a top end gland, a sealing disc, a limiting sleeve, a spacer bush, a rotary connecting piece, a supporting ring and a rotating shaft from one end fixed with an end cover to the other end, wherein the top end gland is fixedly connected to a concave part, the sealing disc is fixedly connected to a convex part, the limiting sleeve is fixedly connected with the sealing disc, the spacer bush is abutted against the limiting sleeve, a convex shaft is arranged at the position of a central shaft of the rotary connecting piece, the convex shaft is abutted against the top end gland, the rotary connecting piece is fixedly connected with the spacer bush, and a supporting ring used for limiting the rotary connecting piece to move away from one end of the end cover is sleeved between the rotary connecting piece and the inner wall of the inner shell; one end of the rotating shaft extends into the second cavity from the opposite end of the end cover fixed on the inner shell and is fixedly connected with the rotating connecting piece, the outer wall of the rotating shaft is rotationally connected with the inner wall of the inner shell through a rotating device, and the rotating device plays a role in axially limiting the rotating shaft;
the end cover is provided with a third channel, the top end gland is provided with a fourth channel, the rotary connecting piece is provided with a fifth channel and a sixth channel which are mutually independent, the rotary shaft is provided with a seventh channel and an eighth channel which are mutually independent, the spacer sleeve is arranged on the protruding shaft and forms a ninth channel, the spacer sleeve is arranged on the rotary connecting piece and forms a tenth channel, the end cover is also provided with an eleventh channel, the inner shell is also provided with a twelfth channel and a thirteenth channel which are used for communicating the eleventh channel and the second cavity, the third channel is sequentially communicated with the fourth channel, the fifth channel and the seventh channel and forms a liquid inlet channel, the eighth channel is sequentially communicated with the sixth channel, the ninth channel and the tenth channel to form a liquid outlet channel, the twelfth channel is communicated with the liquid outlet channel through a gap which is mutually inconsistent between the spacer sleeve and the spacer sleeve, and the thirteenth channel is communicated with the liquid inlet channel through a gap which is mutually inconsistent between the protruding shaft and the top end gland.
2. The assembly for the motorized spindle with the hydraulic cylinder and the central cooling function according to claim 1, wherein the top end gland is provided with a first threaded limit post, the concave portion is provided with a first threaded hole matched with the first limit post, the first limit post is in threaded connection with the first threaded hole, and a first spring is sleeved on the first limit post between the top end gland and the end cover.
3. The assembly with the hydraulic cylinder and the central cooling for the electric spindle according to claim 1, wherein a second threaded limit post is arranged on the limit sleeve, a second threaded hole matched with the second limit post is formed in the sealing disc, the second limit post is in threaded connection with the second threaded hole, and a second spring is sleeved on the second limit post between the limit sleeve and the sealing disc.
4. The assembly for the motorized spindle with the hydraulic cylinder and the central cooling according to claim 1, wherein a first composite sealing element is arranged between a protruding shaft and a top end gland of the rotary connecting element, the first composite sealing element is divided into two layers of bodies, the two layers of bodies of the first composite sealing element are fixedly connected with the protruding shaft and the top end gland respectively, and the two layers of bodies are abutted against each other.
5. The assembly with the hydraulic cylinder and the central cooling for the electric spindle according to claim 4, wherein a second composite sealing element is arranged between the limiting sleeve and the spacer, the second composite sealing element is divided into two layers of bodies, the two layers of bodies of the second composite sealing element are fixedly connected with the limiting sleeve and the spacer respectively, and the two layers of bodies are abutted against each other.
6. The electric spindle assembly with hydraulic cylinder and center cooling of claim 5, wherein the first and second composite seals are each made of ceramic material.
7. The assembly for an electric spindle with a hydraulic cylinder and a central cooling function according to claim 1, wherein the rotating device comprises a baffle ring, a gland, a first bearing, an annular retainer ring and a second bearing, wherein the first bearing and the second bearing are arranged between the rotating shaft and the inner wall of the inner housing, the annular retainer ring is arranged between the first bearing and the second bearing, the first bearing is abutted against a shaft shoulder arranged on the outer wall of the rotating shaft, the baffle ring is in threaded connection with the inner wall of the inner housing, the gland is in threaded connection with the outer wall of the rotating shaft, and the baffle ring and the gland are used for pressing the second bearing, the annular retainer ring and the first bearing towards the direction of the rotating shaft close to the end cover.
8. The assembly for an electric spindle with a hydraulic cylinder and with center cooling of claim 1, further comprising a first wear ring disposed between the inner housing and the hydraulic cylinder piston and a second wear ring disposed between the outer housing and the hydraulic cylinder piston.
9. The assembly for an electric spindle with center cooling and hydraulic cylinder of claim 1, further comprising a first oil seal ring, a second oil seal ring, and a third oil seal ring, wherein the first oil seal ring is disposed between the boss and an outer wall of the inner housing, the second oil seal ring is disposed between the boss and an inner wall of the outer housing, and the third oil seal ring is disposed between the inner wall of the outer housing and a piston of the hydraulic cylinder, and is located on a side of the first shoulder remote from the end cap.
10. The assembly with hydraulic cylinder and center cooling for electric spindle according to claim 1, wherein a plurality of sixth channels are provided, a plurality of sixth channels are arranged around the fifth channel in a ring-shaped array, a plurality of eighth channels are also provided, the number of eighth channels is equal to the number of sixth channels, and the plurality of sixth channels are correspondingly communicated with the plurality of eighth channels.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110271248.1A CN113000868B (en) | 2021-03-12 | 2021-03-12 | Assembly for electric spindle with hydraulic cylinder and central cooling function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110271248.1A CN113000868B (en) | 2021-03-12 | 2021-03-12 | Assembly for electric spindle with hydraulic cylinder and central cooling function |
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| CN113000868A CN113000868A (en) | 2021-06-22 |
| CN113000868B true CN113000868B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110271248.1A Active CN113000868B (en) | 2021-03-12 | 2021-03-12 | Assembly for electric spindle with hydraulic cylinder and central cooling function |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116851792B (en) * | 2023-08-31 | 2023-11-03 | 山东豪迈数控机床有限公司 | Motorized spindle and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752864A (en) * | 2013-12-31 | 2014-04-30 | 广州市昊志机电股份有限公司 | High-power and high-speed electric spindle |
| CN106493617A (en) * | 2016-11-28 | 2017-03-15 | 北京中电科电子装备有限公司 | A kind of electro spindle and thinning machine of the logical coolant cooling in center |
| CN107009193A (en) * | 2017-05-22 | 2017-08-04 | 北京精雕科技集团有限公司 | A kind of electro spindle cooled down with rotor |
| CN112024910A (en) * | 2020-07-16 | 2020-12-04 | 洛阳轴承研究所有限公司 | An electro-spindle and a cutter cylinder assembly for an electro-spindle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030205864A1 (en) * | 2001-03-22 | 2003-11-06 | Dietle Lannie L | Rotary sealing device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752864A (en) * | 2013-12-31 | 2014-04-30 | 广州市昊志机电股份有限公司 | High-power and high-speed electric spindle |
| CN106493617A (en) * | 2016-11-28 | 2017-03-15 | 北京中电科电子装备有限公司 | A kind of electro spindle and thinning machine of the logical coolant cooling in center |
| CN107009193A (en) * | 2017-05-22 | 2017-08-04 | 北京精雕科技集团有限公司 | A kind of electro spindle cooled down with rotor |
| CN112024910A (en) * | 2020-07-16 | 2020-12-04 | 洛阳轴承研究所有限公司 | An electro-spindle and a cutter cylinder assembly for an electro-spindle |
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| CN113000868A (en) | 2021-06-22 |
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