CN114505505A - High-speed electric spindle with replaceable rotating assembly - Google Patents
High-speed electric spindle with replaceable rotating assembly Download PDFInfo
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- CN114505505A CN114505505A CN202210198293.3A CN202210198293A CN114505505A CN 114505505 A CN114505505 A CN 114505505A CN 202210198293 A CN202210198293 A CN 202210198293A CN 114505505 A CN114505505 A CN 114505505A
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- rear bearing
- bearing
- spacer ring
- abuts against
- bearing seat
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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
Abstract
The invention discloses a high-speed electric spindle with a replaceable rotating assembly. The method comprises the following steps: rotating assembly, fixed base body and locking. The rotating assembly consists of a shaft core, a bearing, a rotor, a front bearing seat and the like; the fixed base body is composed of a stator, a motor sleeve, a rear bearing seat and the like. The invention has the following advantages: the rotary component can be quickly disassembled and assembled by controlling the clamping lock, so that more various assembling process possibilities are provided for the factory production process, and the assembling efficiency of the whole machine is improved; in addition, the shaft core in the rotating assembly is deformed and the bearing is ablated when the electric spindle has common faults, the invention provides more convenience for maintenance and shortens the whole maintenance period. The invention has the following advantages: when the function of quickly disassembling and assembling the rotating assembly exists, the back bearing is supported to be pre-tightened in a constant pressure mode, the stability of the electric spindle is improved, and the service life of the bearing is prolonged. The invention has the advantages of: the application property of the electric spindle can be changed by changing different bearing configurations or rotating assemblies of the spindle core. Such as: the vertical milling electric main shaft is changed into a vertical milling electric main shaft.
Description
Technical Field
The invention relates to the technical field of electric spindles, in particular to a high-speed electric spindle with a replaceable rotating assembly.
Background
With the rapid development of the current machining technology, the electric spindle becomes a core functional component of a machining center. The electric spindle is a technology for integrating a mechanical spindle and a motor into a whole, and has the advantages of compact structure, high rotating speed, good dynamic characteristic and the like. But also has the defects of difficult internal heat dissipation of the electric spindle, overhigh maintenance cost and overlong maintenance time caused by overhigh integration and the like. When the existing electric spindle is maintained due to faults, the electric spindle is complex to disassemble and assemble, and the efficiency is low. Nowadays, the processing technology develops towards diversity and multifunctionality, and a multifunctional processing center is produced at the same time. The machining center integrates a plurality of spindles with different application functions, and has the advantages of high machining efficiency, occupied space saving, machining integrity and the like. Meanwhile, the system is complex and has the defect of extremely high cost. For developing small and medium-sized enterprises, the application of the machining center has high cost risk.
Disclosure of Invention
The present invention is directed to a high-speed electric spindle, which solves the above-mentioned problems of the prior art. When the electric spindle breaks down, the rotating assembly can be replaced quickly, the electric spindle is not required to be detached from a machine tool and returned to the factory for maintenance, maintenance time is saved, and machining efficiency is improved. By replacing the rotating components of the shaft core or of different bearing configurations, the application properties of the electric spindle are changed. Such as: and replacing the shaft cores with different configurations and the rotating assemblies with different bearing configurations, and changing the vertical milling electric main shaft into a vertical milling electric main shaft.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a high-speed electric spindle with a replaceable rotating component, which comprises a rotating component, a fixed base body and a clamping lock, wherein the rotating component is fixed on the fixed base body; the rotating assembly comprises a front end cover, a gland, a front bearing seat, a front bearing, a bearing spacer ring, a middle bearing, a shaft core, a front dynamic balance ring, a motor rotor, a rear dynamic balance ring, a rear bearing front spacer ring, a rear bearing rear spacer ring, a rear bearing chamber, a rear bearing outer spacer ring and a rear bearing gland; the fixed base body comprises a machine tool spindle sleeve, a motor water jacket, a motor stator, a rear bearing seat spacer ring, a rear bearing seat, a pre-tightening spring, a sliding sleeve and a rear flange; the clamping lock comprises a lower locking piece, an upper locking piece and an auxiliary nut; the motor rotor is sleeved outside the shaft core, the motor rotor is connected with the motor stator in a rotating mode, the motor stator is sleeved inside the motor water jacket, the motor water jacket is connected with a main shaft sleeve of the machine tool, and the end face of the front bearing seat is connected with the end face of the motor water jacket.
Preferably, a front bearing, a middle bearing and a rear bearing are respectively sleeved at two ends of the shaft core, the middle bearing is abutted against the shaft core, the bearing spacer ring is abutted against the middle bearing and the front bearing, the front end cover is abutted against the front bearing, the gland is abutted against the front bearing, the front dynamic balance ring is abutted against the shaft core, the motor rotor is abutted against the front dynamic balance ring, the rear dynamic balance ring is abutted against the motor rotor, the rear bearing front spacer ring is abutted against the rear bearing, the rear bearing is abutted against the rear bearing rear spacer ring, the rear bearing is abutted against the rear bearing chamber, the rear bearing outer spacer ring is abutted against the rear bearing, and the rear bearing gland is abutted against the rear bearing rear spacer ring; the rear bearing seat spacer ring is abutted against the motor water jacket, the pre-tightening spring is abutted against the rear bearing seat and the rear bearing seat spacer ring, the sliding sleeve is sleeved between the rear bearing seat and the motor water jacket, and the rear flange is abutted against the motor water jacket;
preferably, the rear bearing chamber and the rear bearing seat are provided with taper holes with the same taper; the maximum outer diameter of the rear bearing chamber is smaller than the minimum inner diameter of the motor stator.
Preferably, the lower end of the lower locking piece is provided with a protrusion, the rear bearing chamber is provided with a step, and the end face of the protrusion is abutted against the rear bearing chamber; the upper end of the lower locking piece is provided with an external thread which is matched and connected with the internal thread at the lower end of the upper locking piece; the lower locking piece can slide and rotate in the mounting holes of the rear bearing seat and the rear bearing seat spacer ring.
Preferably, the lower end of the upper locking piece is abutted against the rear bearing seat; the upper end of the upper locking piece is provided with an external thread which is matched and connected with the auxiliary nut.
Compared with the prior art, the invention has the following technical effects:
1. the rotating assembly is quickly disassembled and assembled by controlling the matching relation of the clamping lock and the rear bearing chamber. And more various assembling process possibilities are provided for the factory production process, and the assembling efficiency of the whole machine is improved. More convenience is provided for maintaining common faults of the electric spindle, the electric spindle is not required to be disassembled from a machine tool and returned to the factory for maintenance, the rotating assembly is quickly replaced, and the whole maintenance period is shortened;
2. the function of quickly disassembling and assembling the rotating assembly is maintained, and the constant-pressure pre-tightening of the rear bearing is maintained, so that the stability of the electric main shaft is improved, and the service life of the bearing is prolonged;
3. the application property of the electric spindle can be changed by replacing the rotating components of different bearing configurations or shaft cores. Such as: the vertical milling electric main shaft is changed into a vertical milling electric main shaft.
Drawings
FIG. 1 is a schematic diagram of a high speed motorized spindle rotation assembly replacement process;
FIG. 2 is a schematic view of a high-speed motorized spindle;
FIG. 3 is an enlarged view of the latch;
the bearing assembly comprises a rotating assembly 1, a front bearing seat 101, a gland 102, a front end cover 103, a front bearing 104, a bearing spacer ring 105, a middle bearing 106, a shaft core 107, a front dynamic balance ring 108, a motor rotor 109, a rear dynamic balance ring 110, a rear bearing front spacer ring 111, a rear bearing chamber 112, a rear bearing 113, a rear bearing 114, a rear bearing outer spacer ring 115, a rear bearing rear spacer ring 115, a rear bearing gland 116, a fixed base body 2, a machine tool spindle sleeve 201, a motor water jacket 202, a motor stator 203, a rear flange 204, a sliding sleeve 205, a rear bearing seat 206, a rear bearing spacer ring 207, a pre-tightening spring 208, a locking lock 3, an upper locking piece 301, a lower locking piece 302 and an auxiliary nut 303.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a high-speed electric spindle, which aims to solve the problems in the prior art and provide a structure capable of quickly disassembling and assembling a rotating assembly, improving the assembling and maintaining efficiency of the electric spindle and obtaining more spindle applicability.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-3, fig. 1 is a schematic diagram illustrating a replacement process of a high-speed electric spindle rotating assembly, fig. 2 is a schematic diagram illustrating a structure of a high-speed electric spindle, and fig. 3 is an enlarged schematic diagram illustrating a latch structure.
The invention provides a high-speed electric spindle, which comprises a rotating component 1, a fixed base body 2 and a clamping lock 3;
the rotating assembly 1 comprises a front bearing seat 101, a gland 102, a front end cover 103, a front bearing 104, a bearing spacer ring 105, a middle bearing 106, a shaft core 107, a front dynamic balance ring 108, a motor rotor 109, a rear dynamic balance ring 110, a rear bearing front spacer ring 111, a rear bearing chamber 112, a rear bearing 113, a rear bearing outer spacer ring 114, a rear bearing rear spacer ring 115 and a rear bearing gland 116; the fixed base body 2 comprises a machine tool spindle sleeve 201, a motor water jacket 202, a motor stator 203, a rear flange 204, a sliding sleeve 205, a rear bearing seat 206, a rear bearing seat spacer ring 207 and a pre-tightening spring 208; the latch 3 comprises an upper lock 301, a lower lock 302 and an auxiliary nut 303; the motor rotor 109 is sleeved outside the shaft core 107, the motor rotor 109 is rotatably connected with the motor stator 203, the motor stator 203 is sleeved inside the motor water jacket 202, the motor water jacket 202 is in screw connection with a machine tool spindle sleeve 201, and the front bearing seat 101 is in screw connection with the motor water jacket 202.
Furthermore, the two ends of the shaft core 107 are respectively sleeved with the front bearing 104, the middle bearing 106 and the rear bearing 113, the top end of the inner ring of the middle bearing 106 is abutted against the shaft core 107, the top end of the bearing spacer ring 105 is abutted against the bottom end of the inner ring of the middle bearing 106 and the top end of the inner ring of the front bearing 104, the top end of the front end cover 103 is abutted against the bottom end of the inner ring of the front bearing 104, the front end cover 103 is in threaded connection with the shaft core 107, the gland 102 is in threaded connection with the front bearing seat 101, the gland 102 is abutted against the bottom end of the outer ring of the front bearing 104, the top end of the outer ring of the front bearing 104 is abutted against the front bearing seat 101, the bottom end of the middle bearing 106 is abutted against the shaft core 101, the bottom end of the front dynamic balance ring 108 is abutted against the shaft core 107, the bottom end of the motor rotor 109 is abutted against the top end of the front dynamic balance ring 108, the bottom end of the rear dynamic balance ring 110 is abutted against the top end of the motor rotor 109, and the bottom end of the front spacer ring 111 of the rear bearing is abutted against the shaft core 107, the top end of the rear bearing front spacer ring 111 is abutted with the bottom end of the inner ring of the rear bearing 113, the top end of the rear bearing 113 is abutted with the bottom end of the outer ring of the rear bearing rear spacer ring 115, the bottom end of the outer ring of the rear bearing 113 is abutted with the rear bearing chamber 112, the bottom end of the rear bearing outer spacer ring 114 is abutted with the top end of the outer ring of the rear bearing 113, and the rear bearing gland 116 is abutted with the top end of the rear bearing rear spacer ring 115; the bottom end of the rear bearing spacer ring 207 is abutted against the motor water jacket 202, the pre-tightening spring 208 is abutted against the rear bearing seat 206 and the rear bearing spacer ring 207, the sliding sleeve 205 is sleeved between the rear bearing seat 206 and the motor water jacket 202, and the rear flange 204 is abutted against the top end of the motor water jacket 202.
Furthermore, the rear bearing chamber 112 and the rear bearing seat 206 are provided with taper holes with the same taper, so that the assembly positioning and the matching precision are convenient; the maximum outer diameter of the rear bearing chamber 112 is smaller than the minimum inner diameter of the motor stator 203, so that the rotating assembly 1 is prevented from interfering with the motor stator 203 when being integrally separated from or assembled with the main shaft.
Further, the lower end of the lower locking piece 302 is provided with a protrusion, the rear bearing chamber 112 is provided with a step, and the top end of the protrusion end surface is abutted against the rear bearing chamber 112; the upper end of the lower locking piece 302 is provided with an external thread which is matched and connected with the internal thread at the lower end of the upper locking piece 301; the lower lock 302 can slide and rotate in the mounting holes of the rear bearing seat 206 and the rear bearing spacer 207.
Further, the lower end surface of the upper locking piece 301 is abutted against the upper end surface of the rear bearing seat 206; the upper end of the upper locking piece 301 is provided with an external thread which is matched and connected with the auxiliary nut 303, and the upper locking piece 301 compresses the pre-tightening spring 208 by rotating the auxiliary nut 303; an inner hexagonal wrench insertion hole is formed in the upper end of the upper locking piece 301, so that the rotation of the locking lock 1 can be controlled outside the spindle conveniently; the upper lock 301 can slide and rotate in the mounting hole of the rear flange 204.
The specific working process of the invention is as follows:
when the high-speed electric spindle needs to be quickly disassembled, firstly, the auxiliary nut 303 is rotated, the lock 1 presses the rear bearing seat 206 downwards, the pre-tightening spring 208 arranged in the rear bearing seat 206 is compressed, the lock 1 does not provide pre-tightening force for the rear bearing 113 any more, an inner hexagonal wrench is inserted into a preset hole position of the upper lock 301 and rotates 180 degrees, and at the moment, the bulge of the lock 1 does not abut against the rear bearing chamber 112. Secondly, the connecting screw of the front bearing seat 101 and the motor water jacket 202 is loosened, and the rotating assembly 1 can be smoothly detached from the electric spindle.
When the high-speed electric spindle needs to be assembled quickly, the auxiliary nut 303 is rotated, the latch 1 presses the rear bearing seat 206 downwards, the pre-tightening spring 208 arranged in the rear bearing seat 206 is compressed, the rotating assembly 1 is inserted into the fixed base body 2 downwards and upwards, and the assembly precision is ensured due to the matching of the rear bearing chamber 112 and the taper hole of the rear bearing seat 206. And mounting a connecting screw of the front bearing seat 101 and the motor water jacket 202. Secondly, an inner hexagonal wrench is inserted into a preset hole position of the upper lock 301 and rotates 180 degrees, the auxiliary nut 303 is rotated, the lock 1 faces upwards, the bulge of the lock 1 is abutted against the rear bearing chamber 112 at the moment, and pretightening force is provided for the rear bearing 113.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. A high-speed electric spindle is characterized by comprising a rotating component, a fixed base body and a lock;
the rotating assembly comprises a front end cover, a gland, a front bearing seat, a front bearing, a bearing spacer ring, a middle bearing, a shaft core, a front dynamic balance ring, a motor rotor, a rear dynamic balance ring, a rear bearing front spacer ring, a rear bearing rear spacer ring, a rear bearing chamber, a rear bearing outer spacer ring and a rear bearing gland; the fixed base body comprises a machine tool spindle sleeve, a motor water jacket, a motor stator, a rear bearing seat spacer ring, a rear bearing seat, a pre-tightening spring, a sliding sleeve and a rear flange; the clamping lock comprises a lower locking piece, an upper locking piece and an auxiliary nut; the motor rotor is sleeved outside the shaft core, the motor rotor is connected with the motor stator in a rotating mode, the motor stator is sleeved inside the motor water jacket, the motor water jacket is connected with a main shaft sleeve of the machine tool, and the end face of the front bearing seat is connected with the end face of the motor water jacket.
2. The high-speed electric spindle according to claim 1, wherein a front bearing, a middle bearing and a rear bearing are respectively sleeved at two ends of the spindle core, the middle bearing abuts against the spindle core, the bearing spacer ring abuts against the middle bearing and the front bearing, the front end cover abuts against the front bearing, the gland abuts against the front bearing, the front dynamic balance ring abuts against the spindle core, the motor rotor abuts against the front dynamic balance ring, the rear dynamic balance ring abuts against the motor rotor, the rear bearing front spacer ring abuts against the rear bearing, the rear bearing abuts against the rear bearing rear spacer ring, the rear bearing abuts against the rear bearing chamber, the rear bearing outer spacer ring abuts against the rear bearing, and the rear bearing gland abuts against the rear bearing rear spacer ring; the rear bearing seat spacer ring is abutted to the motor water jacket, the pre-tightening spring is abutted to the rear bearing seat and the rear bearing seat spacer ring, the sliding sleeve is sleeved between the rear bearing seat and the motor water jacket, and the rear flange is abutted to the motor water jacket.
3. A high-speed electric spindle according to any one of claims 1 and 2, wherein the rear bearing chamber and the rear bearing seat are provided with taper holes having the same taper; the maximum outer diameter of the rear bearing chamber is smaller than the minimum inner diameter of the motor stator.
4. A high-speed electric spindle according to any one of claims 1 and 2, wherein the lower end of the lower locking member is provided with a protrusion, the rear bearing chamber is provided with a step, and the end surface of the protrusion abuts against the rear bearing chamber; the upper end of the lower locking piece is provided with an external thread which is matched and connected with the internal thread at the lower end of the upper locking piece; the lower locking piece can slide and rotate in the mounting holes of the rear bearing seat and the rear bearing seat spacer ring.
5. A high-speed electric spindle according to any one of claims 1 and 2, wherein the lower end of the upper lock abuts against the rear bearing seat; the upper end of the upper locking piece is provided with external threads matched and connected with the auxiliary nut, the upper end of the upper locking piece is provided with an inner hexagonal wrench inserting hole, and the upper locking piece can slide and rotate in the rear flange mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210198293.3A CN114505505B (en) | 2022-03-01 | 2022-03-01 | High-speed electric spindle with replaceable rotating assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210198293.3A CN114505505B (en) | 2022-03-01 | 2022-03-01 | High-speed electric spindle with replaceable rotating assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114505505A true CN114505505A (en) | 2022-05-17 |
| CN114505505B CN114505505B (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210198293.3A Active CN114505505B (en) | 2022-03-01 | 2022-03-01 | High-speed electric spindle with replaceable rotating assembly |
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| Country | Link |
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| CN (1) | CN114505505B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245107A (en) * | 2023-10-19 | 2023-12-19 | 江苏华雕机械有限公司 | High-speed machine tool electric spindle with replaceable rotating assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570313A (en) * | 1984-12-31 | 1986-02-18 | G. A. Gray Division, The Warner & Swasey Company | Spindle lock-up device |
| CN112317778A (en) * | 2020-10-23 | 2021-02-05 | 广州市昊志机电股份有限公司 | Electric spindle and machine tool |
| CN212704386U (en) * | 2020-07-31 | 2021-03-16 | 浙江铭匠精工有限公司 | Locking device of electric spindle |
| CN112658293A (en) * | 2020-12-08 | 2021-04-16 | 珠海格力电器股份有限公司 | Shaft core assembly convenient to disassemble and assemble and electric spindle |
| CN113059201A (en) * | 2021-04-16 | 2021-07-02 | 哈尔滨理工大学 | High-speed electric spindle |
-
2022
- 2022-03-01 CN CN202210198293.3A patent/CN114505505B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570313A (en) * | 1984-12-31 | 1986-02-18 | G. A. Gray Division, The Warner & Swasey Company | Spindle lock-up device |
| CN212704386U (en) * | 2020-07-31 | 2021-03-16 | 浙江铭匠精工有限公司 | Locking device of electric spindle |
| CN112317778A (en) * | 2020-10-23 | 2021-02-05 | 广州市昊志机电股份有限公司 | Electric spindle and machine tool |
| CN112658293A (en) * | 2020-12-08 | 2021-04-16 | 珠海格力电器股份有限公司 | Shaft core assembly convenient to disassemble and assemble and electric spindle |
| CN113059201A (en) * | 2021-04-16 | 2021-07-02 | 哈尔滨理工大学 | High-speed electric spindle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245107A (en) * | 2023-10-19 | 2023-12-19 | 江苏华雕机械有限公司 | High-speed machine tool electric spindle with replaceable rotating assembly |
| CN117245107B (en) * | 2023-10-19 | 2024-04-09 | 江苏华雕机械有限公司 | High-speed machine tool electric spindle with replaceable rotating assembly |
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| Publication number | Publication date |
|---|---|
| CN114505505B (en) | 2022-09-02 |
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