Motorized spindle convenient to disassemble and assemble

Abstract

The utility model belongs to the technical field of motorized spindles, and particularly relates to a motorized spindle convenient to disassemble and assemble. Comprising a main shaft outer sleeve internally provided with a mounting cavity in a penetrating manner, a motor shaft coaxially arranged in the mounting cavity in a penetrating manner, a bearing arranged on the motor shaft in a sleeving manner, a bearing mounting seat arranged at the front end of the main shaft outer sleeve, and a threaded connection structure arranged between the main shaft outer sleeve and the bearing mounting seat. One end of the bearing mounting seat directly and rotatably extends into the mounting cavity and is in threaded connection with the main shaft outer sleeve through the threaded connection structure, so that mounting is stable and quite convenient, screw mounting and hole alignment are not needed, and dismounting and mounting are convenient.

Description

Technical field

[0001] The utility model belongs to the technical field of electric spindles, and in particular relates to an electric spindle that is easy to assemble and disassemble. [Background Technology]

[0002] As the core component of modern CNC machine tools, the electric spindle is equipped with a bearing mounting seat on the spindle housing to facilitate the installation of bearings in order to make the electric spindle work more stably during actual high-speed cutting processing. However, the existing bearing mounting seat is generally installed at the front end of the spindle housing and fixed with screws. During installation, the mounting holes of the spindle housing and the bearing mounting seat need to be aligned before the screws are screwed in. In order to ensure a stable installation, at least two screws or even more need to be screwed in, which makes the disassembly and assembly of the bearing mounting seat inconvenient. [Utility Model Content]

[0003] The purpose of the utility model is to provide an electric spindle which can directly rotate and screw a bearing mounting seat to one end of a spindle outer sleeve, and has a stable installation and convenient assembly and disassembly.

[0004] The utility model is realized by the following technical solutions:

[0005] An electric spindle that is easy to assemble and disassemble comprises:

[0006] A main shaft outer shell having a mounting cavity therein;

[0007] The motor shaft is coaxially arranged in the mounting cavity;

[0008] The bearing is sleeved on the motor shaft and located between the motor shaft and the main shaft outer sleeve;

[0009] A bearing mounting seat is provided at the front end of the main shaft outer sleeve for mounting the bearing;

[0010] The threaded connection structure is provided between the main shaft outer sleeve and the bearing mounting seat. One end of the bearing mounting seat can be rotated to extend into the mounting cavity and is threadedly connected to the main shaft outer sleeve through the threaded connection structure.

[0011] As described above, the electric spindle that is easy to assemble and disassemble, the bearing mounting seat includes:

[0012] A seat mounting portion, which can be rotated to extend into the mounting cavity, and the outer side of the seat mounting portion is threadedly connected to the inner side of the main shaft outer sleeve;

[0013] The bearing mounting portion is connected to the seat mounting portion and is used for mounting the bearing.

[0014] As described above, in the electric spindle that is easy to assemble and disassemble, the threaded connection structure includes an internal thread provided on the inner wall of the spindle outer sleeve and an external thread provided on the outer wall of the seat mounting portion, and the internal thread is meshed with the external thread.

[0015] As described above, in the electric spindle that is easy to assemble and disassemble, a limiting ring protrusion is provided on the inner wall of the bearing mounting portion, and a bearing mounting groove is formed between the limiting ring protrusion and the bearing mounting portion.

[0016] As described above, the electric spindle that is easy to assemble and disassemble is provided on the spindle outer shell with:

[0017] A communicating groove is circumferentially arranged on the inner side of the main shaft outer sleeve;

[0018] A first spiral groove is spirally arranged on the inner side of the main shaft outer sleeve along the circumferential direction and is connected to the connecting groove;

[0019] A second spiral groove is spirally arranged on the inner side of the main shaft outer sleeve along the circumferential direction and is connected to the connecting groove;

[0020] a liquid inlet channel, which is axially arranged on the main shaft outer sleeve, with one end connected to the first spiral groove and the other end passing through the front end of the main shaft outer sleeve;

[0021] The liquid outlet channel is axially arranged on the main shaft outer sleeve, with one end being connected to the second spiral groove and the other end penetrating the front end of the main shaft outer sleeve.

[0022] In the above-mentioned electric spindle that is easy to assemble and disassemble, the first spiral groove and the second spiral groove are arranged in parallel.

[0023] As described above, in the electric spindle that is easy to assemble and disassemble, a flange connection plate is provided at one end of the spindle housing away from the liquid inlet channel and the liquid outlet channel.

[0024] In the electric spindle that is easy to assemble and disassemble as described above, the bearing mounting portion is provided with a first end cover through hole connected to the liquid inlet channel, and a second end cover through hole connected to the liquid outlet channel.

[0025] Compared with the prior art, the utility model has the following advantages:

[0026] The utility model provides an electric spindle which is easy to assemble and disassemble, comprising a spindle outer sleeve with an installation cavity therethrough, a motor shaft coaxially inserted into the installation cavity, a bearing sleeved on the motor shaft, a bearing mounting seat provided at the front end of the spindle outer sleeve, and a threaded connection structure provided between the spindle outer sleeve and the bearing mounting seat. During installation, one end of the bearing mounting seat is directly rotated and extended into the installation cavity and threadedly connected to the spindle outer sleeve through the threaded connection structure. The installation is stable and very convenient, and no screws or holes are required, so the disassembly and assembly are convenient.

Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0028] Figure 1This is a schematic diagram of the exploded structure of the electric spindle in a specific embodiment of the present utility model;

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure of the main shaft outer sleeve in a specific embodiment of the present utility model. [Specific implementation method]

[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] When the embodiments of the present invention mention ordinal numbers such as "first" and "second", unless they do express the meaning of order according to the context, they should be understood as being merely for the purpose of distinction.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] Specific embodiments, such as Figure 1-2 The illustrated electric spindle is easy to assemble and disassemble, and includes: a spindle housing 1 having a mounting cavity 20 extending therethrough; a motor shaft 8 coaxially extending therethrough; a bearing 18 sleeved on the motor shaft 8 and located between the motor shaft 8 and the spindle housing 1; a bearing mounting seat 13 disposed at the front end of the spindle housing 1 for mounting the bearing 18; and a threaded connection structure 19 disposed between the spindle housing 1 and the bearing mounting seat 13. One end of the bearing mounting seat 13 is rotatable and extends into the mounting cavity 20 and is threadedly connected to the spindle housing 1 via the threaded connection structure 19. During installation, one end of the bearing mounting seat is directly rotated and extended into the mounting cavity and is threadedly connected to the spindle housing via the threaded connection structure. This provides for a stable and convenient installation, and requires no screws or holes, making assembly and disassembly easy.

[0034] Specifically, the bearing mounting seat 13 includes a seat mounting portion 131 that can rotate and extend into the mounting cavity 20, with the outer side of the seat mounting portion 131 threadedly connected to the inner side of the spindle housing 1; and a bearing mounting portion 132 that is connected to the seat mounting portion 131 and is used to mount the bearing 18. The seat mounting portion 131 and the bearing mounting portion 132 are integrally formed to facilitate production.

[0035] More specifically, the threaded connection structure 19 includes an internal thread 191 on the inner wall of the spindle housing 1 and an external thread 192 on the outer wall of the seat mounting portion 131. The internal thread 191 and the external thread 192 mesh together. The meshing of the internal thread 191 on the inner wall of the spindle housing 1 and the external thread 192 on the outer wall of the seat mounting portion 131 restricts axial movement of the spindle housing 1 relative to the seat mounting portion 131, thereby securing the spindle housing 1 and the seat mounting portion 131. This provides a secure connection and facilitates assembly and disassembly.

[0036] Furthermore, in order to facilitate the installation of the bearing, a limiting ring protrusion 21 is provided on the inner wall of the bearing installation portion 132 , and a bearing installation groove 22 is formed between the limiting ring protrusion 21 and the bearing installation portion 132 .

[0037] Furthermore, the spindle housing 1 is provided with: a connecting groove 2, which is circumferentially arranged on the inner side of the spindle housing 1; a first spiral groove 3, which is spirally arranged on the inner side of the spindle housing 1 and communicates with the connecting groove 2; a second spiral groove 4, which is spirally arranged on the inner side of the spindle housing 1 and communicates with the connecting groove 2; a liquid inlet channel 5, which is axially arranged on the spindle housing 1, with one end communicating with the first spiral groove 3 and the other end passing through the front end of the spindle housing 1; and a liquid outlet channel 6, which is axially arranged on the spindle housing 1, with one end communicating with the second spiral groove 4 and the other end passing through the front end of the spindle housing 1. When in use, coolant enters from the liquid inlet channel and flows through the first spiral groove, the connecting groove, and the second spiral groove in sequence, and finally flows out from the liquid outlet channel. The flow channel is formed on the inner side of the spindle housing, making the overall outer diameter of the electric spindle smaller. At the same time, the other ends of the liquid inlet channel and the liquid outlet channel both pass through the front end of the spindle housing. The liquid inlet channel and the liquid outlet channel are arranged at the same end to facilitate external cooling pipe connection.

[0038] Specifically, the first spiral groove 3 and the second spiral groove 4 are arranged in parallel.

[0039] In addition, the spindle housing 1 is provided with a flange connection plate 7 at one end away from the liquid inlet channel 5 and the liquid outlet channel 6. To facilitate assembly. Specifically, the flange connection plate 7 is integrally formed on the spindle housing 1, making production more convenient.

[0040] More specifically, the bearing mounting portion 132 is provided with a first end cover through hole 14 communicating with the liquid inlet channel 5 , and a second end cover through hole 15 communicating with the liquid outlet channel 6 .

[0041] The above is an implementation method provided in conjunction with specific content, and does not necessarily mean that the specific implementation of this utility model is limited to these descriptions. At the same time, due to differences in industry nomenclature, it is not limited to the above nomenclature, nor is it limited to English nomenclature. Any method, structure, etc. similar to or identical to the method, structure, etc. of this utility model, or any technical deduction or replacement based on the concept of this utility model, shall be considered within the scope of protection of this utility model.

Claims

1. An electric spindle that is easy to assemble and disassemble, characterized in that: include: A main shaft outer sleeve (1) is provided with a mounting cavity (20) therein; A motor shaft (8) is coaxially disposed in the mounting cavity (20); A bearing (18) is sleeved on the motor shaft (8) and located between the motor shaft (8) and the main shaft outer sleeve (1); A bearing mounting seat (13) is provided at the front end of the main shaft outer sleeve (1) for mounting a bearing (18); A threaded connection structure (19) is provided between the main shaft outer sleeve (1) and the bearing mounting seat (13); one end of the bearing mounting seat (13) can be rotated to extend into the mounting cavity (20) and is threadedly connected to the main shaft outer sleeve (1) through the threaded connection structure (19).

2. The electric spindle with easy assembly and disassembly according to claim 1, characterized in that: The bearing mounting seat (13) comprises: A seat body mounting portion (131) is rotatably inserted into the mounting cavity (20), and the outer side of the seat body mounting portion (131) is threadedly connected to the inner side of the main shaft outer sleeve (1); The bearing mounting portion (132) is connected to the seat mounting portion (131) and is used for mounting the bearing (18).

3. The electric spindle with easy assembly and disassembly according to claim 2, characterized in that: The threaded connection structure (19) comprises an internal thread (191) provided on the inner wall of the main shaft outer sleeve (1) and an external thread (192) provided on the outer wall of the seat mounting portion (131), wherein the internal thread (191) and the external thread (192) are meshed with each other.

4. The electric spindle with easy assembly and disassembly according to claim 2, characterized in that: A limiting ring protrusion (21) is provided on the inner wall of the bearing mounting portion (132), and a bearing mounting groove (22) is formed between the limiting ring protrusion (21) and the bearing mounting portion (132).

5. The electric spindle with easy assembly and disassembly according to claim 2, characterized in that: The main shaft outer sleeve (1) is provided with: A communicating groove (2) is circumferentially arranged on the inner side of the main shaft outer sleeve (1); A first spiral groove (3) is spirally arranged on the inner side of the main shaft outer sleeve (1) along the circumferential direction and is connected to the connecting groove (2); A second spiral groove (4) is spirally arranged on the inner side of the main shaft outer sleeve (1) along the circumferential direction and is connected to the connecting groove (2); A liquid inlet channel (5) is axially arranged on the main shaft outer sleeve (1), with one end being connected to the first spiral groove (3) and the other end penetrating the front end of the main shaft outer sleeve (1); The liquid outlet channel (6) is axially arranged on the main shaft outer sleeve (1), with one end being connected to the second spiral groove (4) and the other end penetrating the front end of the main shaft outer sleeve (1).

6. The electric spindle with easy assembly and disassembly according to claim 5, characterized in that: The first spiral groove (3) and the second spiral groove (4) are arranged in parallel.

7. The electric spindle with easy assembly and disassembly according to claim 5, characterized in that: A flange connection plate (7) is provided at one end of the main shaft outer sleeve (1) away from the liquid inlet channel (5) and the liquid outlet channel (6).

8. The electric spindle with easy assembly and disassembly according to claim 5, characterized in that: The bearing mounting portion (132) is provided with a first end cover through hole (14) connected to the liquid inlet channel (5), and a second end cover through hole (15) connected to the liquid outlet channel (6).

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