High-precision high-speed motorized spindle with cooling groove

Abstract

The utility model relates to a high accuracy high -speed electric main shaft with cooling tank belongs to electric main shaft technical field, including inner casing, the number is two outer casing and the number is two annular cooling pipe, be equipped with the mounting structure for annular cooling pipe installation between the inner casing and outer casing, the mounting structure includes the mounting ring fixedly connected in the inner casing outer peripheral wall, the inside of two outer casing all is fixedly connected with the limit half ring. This high accuracy high -speed electric main shaft with cooling tank, through the effect of mounting ring and limit half ring to the outer casing positioning installation, through the effect of inlet pipe and drain pipe respectively with cooling water input to the inside of annular cooling pipe and with cooling water discharge, through the effect of bottom cover, top cover and outer thread ring to the bottom and top of inner casing are sealed, through the effect of inner casing and bolt to install and fix two outer casing, to be convenient for the replacement of annular cooling pipe.

Description

Technical Field

[0001] This utility model relates to the field of electric spindle technology, specifically a high-precision, high-speed electric spindle with a cooling groove. Background Technology

[0002] A high-precision, high-speed electric spindle is a core component that integrates a high-speed motor with a precision spindle, and is widely used in high-end equipment such as CNC machine tools and precision machining centers. It directly drives the tool rotation via a built-in motor, achieving extremely high speeds and micron-level runout accuracy. Simultaneously, it employs advanced bearing technology, a cooling system, and dynamic balancing design to effectively control temperature rise and vibration, ensuring stable operation over extended periods.

[0003] Water cooling involves installing cooling tanks on the electric spindle housing, with coolant circulating within these tanks to remove heat. However, this method suffers from drawbacks such as the difficulty in manufacturing the cooling tanks and the risk of coolant leakage. Another approach is to use cooling pipes to cool the electric spindle. This method is relatively simple in structure and offers better cooling performance.

[0004] Existing electric spindles that use cooling pipes for cooling typically have the cooling pipes installed between the inner and outer housings. While this effectively guides the coolant to the heat source inside the spindle, achieving precise cooling, the location of the cooling pipes inside the spindle means that when the cooling pipes are damaged or need replacement, it is necessary to disassemble parts of the spindle, or even the entire spindle, to replace them. This is not only cumbersome and time-consuming in the maintenance process, but also increases maintenance costs and may even cause secondary damage to other components of the spindle, affecting the overall performance and lifespan of the spindle. Therefore, a high-precision, high-speed electric spindle with cooling grooves is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-precision, high-speed electric spindle with a cooling groove, which has advantages such as easy replacement of the annular cooling tube. This solves the problem that the cooling tube in existing high-precision, high-speed electric spindles is difficult to replace, requiring the disassembly of some components of the electric spindle, or even the entire electric spindle, in order to replace it. This not only makes the maintenance process cumbersome, time-consuming, and labor-intensive.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-precision, high-speed electric spindle with a cooling groove includes an inner housing, two outer housings, and two annular cooling pipes. An installation structure for mounting the annular cooling pipes is provided between the inner housing and the outer housing.

[0008] The mounting structure includes a mounting ring fixedly connected to the outer peripheral wall of the inner shell, a limiting half-ring fixedly connected to the inside of each of the two outer shells, a bottom cover plate movably connected to the bottom of the outer shell, a top cover plate movably connected to the top of the outer shell, external threaded rings fixedly connected to opposite sides of the bottom cover plate and the top cover plate, two mounting seats fixedly connected to the outer wall of the outer shell, bolts slidingly passing through the interior of the two adjacent mounting seats, and a water-passing connection assembly provided on the outer wall of the annular cooling pipe.

[0009] Furthermore, the water connection assembly includes an inlet pipe fixedly connected to the inlet end of the annular cooling pipe, a drain pipe fixedly connected to the outlet end of the annular cooling pipe, an inlet seat fixedly connected to the inlet end of the inlet pipe, a drain seat fixedly connected to the drain end of the inlet pipe, a first tee pipe inserted inside the inlet seat, and a second tee pipe inserted inside the drain seat.

[0010] Furthermore, the end of the first three-way pipe away from the outer casing is fixedly connected to an inlet valve, and the end of the second three-way pipe away from the outer casing is fixedly connected to an outlet valve.

[0011] Furthermore, the outer wall of the outer casing is fixedly connected with two mounting brackets, and the number of mounting brackets is four. Each mounting bracket includes a mounting rod and a support ring, and the four support rings are respectively fixedly connected to the outer peripheral walls of the first tee pipe and the second tee pipe.

[0012] Furthermore, four limiting support seats are fixedly connected inside the outer shell on the left side, and the two annular cooling pipes are slidably connected between the four limiting support seats.

[0013] Furthermore, the mounting ring is movably connected between the two outer shells, and the mounting ring is slidably connected between the four limiting half rings.

[0014] Furthermore, the inner walls of both outer shells are provided with threaded grooves, the external threaded ring is connected to the threaded grooves, and the top cover plate has a notch inside.

[0015] Furthermore, the mounting base has an internal mounting groove, and the bolt is slidably connected inside the mounting groove, with the bolt being adapted to the size of the mounting groove.

[0016] Compared with the prior art, this utility model provides a high-precision, high-speed electric spindle with a cooling groove, which has the following advantages:

[0017] 1. This high-precision, high-speed electric spindle with a cooling groove uses an installation ring and a limiting half-ring to position and install the outer housing. Cooling water is introduced into the annular cooling pipe and discharged through the inlet and outlet pipes, respectively. The bottom and top of the inner housing are sealed by the bottom cover plate, top cover plate, and external threaded ring. The two outer housings are installed and fixed by the inner housing and bolts, which facilitates the replacement of the annular cooling pipe.

[0018] 2. This high-precision, high-speed electric spindle with a cooling tank allows water to be introduced into the two inlet pipes via the first three-way pipe, and water to be drained into the two outlet pipes via the second three-way pipe, facilitating the replacement of the coolant inside the two annular cooling pipes. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the outer shell of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the inner shell and the mounting ring of this utility model.

[0022] In the diagram: 1. Inner shell; 2. Outer shell; 3. Mounting ring; 4. Limiting half ring; 5. Annular cooling pipe; 6. Water inlet pipe; 7. Drain pipe; 8. Water inlet seat; 9. Drain seat; 10. First tee pipe; 11. Second tee pipe; 12. Limiting support seat; 13. Water inlet valve; 14. Water outlet valve; 15. Mounting bracket; 16. Bottom cover plate; 17. Top cover plate; 18. External threaded ring; 19. Mounting seat; 20. Bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 3 In this embodiment, a high-precision, high-speed electric spindle with a cooling groove includes an inner housing 1, two outer housings 2, and two annular cooling pipes 5. An installation structure for mounting the annular cooling pipes 5 is provided between the inner housing 1 and the outer housing 2.

[0025] In this embodiment, the mounting structure includes a mounting ring 3 fixedly connected to the outer peripheral wall of the inner shell 1, a limiting half-ring 4 fixedly connected to the inside of each of the two outer shells 2, a mounting ring 3 movably connected between the two outer shells 2, a mounting ring 3 slidably connected between the four limiting half-rings 4, a bottom cover plate 16 movably connected to the bottom of the outer shell 2, a top cover plate 17 movably connected to the top of the outer shell 2, and external threaded rings 18 fixedly connected to opposite sides of the bottom cover plate 16 and the top cover plate 17. Threaded grooves are provided on the inner walls of both outer shells 2, and the external threaded rings 18 are threadedly connected to the threaded grooves. A notch is provided inside the top cover plate 17.

[0026] It should be noted that the bottom cover plate 16 and the top cover plate 17 are installed by means of two external threaded rings 18.

[0027] In this embodiment, two mounting bases 19 are fixedly connected to the outer wall of the outer shell 2. Bolts 20 slide through the interior of the two adjacent mounting bases 19. The interior of the mounting base 19 is provided with a mounting groove, and the bolts 20 are slidably connected inside the mounting groove. The bolts 20 are adapted to the size of the mounting groove.

[0028] It should be noted that the two outer shells 2 are installed and fixed by the action of bolts 20.

[0029] In this embodiment, the outer wall of the annular cooling pipe 5 is provided with a water-passing connection assembly. The water-passing connection assembly includes a water inlet pipe 6 fixedly connected to the water inlet end of the annular cooling pipe 5, a drain pipe 7 fixedly connected to the water outlet end of the annular cooling pipe 5, a water inlet seat 8 fixedly connected to the water inlet end of the water inlet pipe 6, a drain seat 9 fixedly connected to the drain end of the water inlet pipe 6, a first three-way pipe 10 inserted inside the water inlet seat 8, and a second three-way pipe 11 inserted inside the drain seat 9.

[0030] It should be noted that water is introduced into the interior of the annular cooling pipe 5 and discharged through the action of the first tee pipe 10 and the second tee pipe 11.

[0031] In this embodiment, four limiting support seats 12 are fixedly connected inside the left outer shell 2, and two annular cooling pipes 5 are slidably connected between the four limiting support seats 12.

[0032] It should be noted that the annular cooling pipe 5 is supported and limited by the limiting support seat 12.

[0033] In this embodiment, a water inlet valve 13 is fixedly connected to the end of the first three-way pipe 10 away from the outer shell 2, and a water outlet valve 14 is fixedly connected to the end of the second three-way pipe 11 away from the outer shell 2. Two mounting brackets 15 are fixedly connected to the outer wall of the outer shell 2. There are four mounting brackets 15 in total. Each mounting bracket 15 includes a mounting rod and a support ring. The four support rings are respectively fixedly connected to the outer peripheral walls of the first three-way pipe 10 and the second three-way pipe 11.

[0034] In this embodiment, the first tee pipe 10 and the second tee pipe 11 are installed and supported by the mounting bracket 15.

[0035] It should be noted that the high-precision, high-speed electric spindle is installed inside the inner housing 1.

[0036] It should be noted that the outer casing 2 has two perforations inside. The water inlet pipe 6 slides through the inside of the right perforation, and the drain pipe 7 slides through the inside of the left perforation.

[0037] It should be noted that a water pump is connected to the inlet end of the water inlet valve 13.

[0038] The working principle of the above embodiments is as follows:

[0039] When installing the annular cooling pipe 5, the two annular cooling pipes 5 are slidably connected to the outer peripheral wall of the inner shell 1. Then, the two outer shells 2 are moved from the left and right sides toward the inner shell 1 respectively. At this time, the water inlet seat 8 and the drain seat 9 slide through the interior of the two outer shells 2 respectively. At this time, the two ends of the first three-way pipe 10 are inserted into the interior of the water inlet seat 8, and the two ends of the second three-way pipe 11 are inserted into the interior of the drain seat 9. Then, the bolt 20 is installed into the interior of the mounting base 19 to fix the two outer shells 2. Finally, the bottom cover plate 16 and the top cover plate 17 are installed at the bottom and top of the inner shell 1 respectively through the external threaded ring 18. At this time, the installation of the annular cooling pipe 5 is completed.

[0040] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0041] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision, high-speed electric spindle with a cooling groove, comprising an inner housing (1), two outer housings (2), and two annular cooling pipes (5), characterized in that: An installation structure for installing the annular cooling pipe (5) is provided between the inner shell (1) and the outer shell (2); The installation structure includes an installation ring (3) fixedly connected to the outer peripheral wall of the inner shell (1), a limiting half ring (4) fixedly connected inside the two outer shells (2), a bottom cover plate (16) movably connected to the bottom of the outer shell (2), a top cover plate (17) movably connected to the top of the outer shell (2), an external threaded ring (18) fixedly connected to the opposite side of the bottom cover plate (16) and the top cover plate (17), two mounting seats (19) fixedly connected to the outer wall of the outer shell (2), and bolts (20) slidingly passing through the interior of the two adjacent mounting seats (19), and a water-passing connection assembly provided on the outer wall of the annular cooling pipe (5).

2. The high-precision, high-speed electric spindle with cooling grooves according to claim 1, characterized in that: The water connection assembly includes an inlet pipe (6) fixedly connected to the inlet end of the annular cooling pipe (5), a drain pipe (7) fixedly connected to the outlet end of the annular cooling pipe (5), an inlet seat (8) fixedly connected to the inlet end of the inlet pipe (6), a drain seat (9) fixedly connected to the drain end of the inlet pipe (6), a first tee pipe (10) inserted inside the inlet seat (8), and a second tee pipe (11) inserted inside the drain seat (9).

3. A high-precision, high-speed electric spindle with a cooling groove according to claim 2, characterized in that: The first three-way pipe (10) is fixedly connected to a water inlet valve (13) at the end away from the outer shell (2), and the second three-way pipe (11) is fixedly connected to a water outlet valve (14) at the end away from the outer shell (2).

4. A high-precision, high-speed electric spindle with a cooling groove according to claim 2, characterized in that: The outer wall of the outer shell (2) is fixedly connected to two mounting brackets (15), and there are four mounting brackets (15). Each mounting bracket (15) includes a mounting rod and a support ring. The four support rings are respectively fixedly connected to the outer peripheral walls of the first tee pipe (10) and the second tee pipe (11).

5. A high-precision, high-speed electric spindle with a cooling groove according to claim 1, characterized in that: The outer shell (2) on the left side is fixedly connected with four limiting support seats (12), and the two annular cooling pipes (5) are slidably connected between the four limiting support seats (12).

6. A high-precision, high-speed electric spindle with a cooling groove according to claim 1, characterized in that: The mounting ring (3) is movably connected between the two outer shells (2), and the mounting ring (3) is slidably connected between the four limiting half rings (4).

7. A high-precision, high-speed electric spindle with a cooling groove according to claim 1, characterized in that: Both outer shells (2) have threaded grooves on their inner walls, the external threaded ring (18) is threaded into the threaded grooves, and the top cover (17) has a notch inside.

8. A high-precision, high-speed electric spindle with a cooling groove according to claim 1, characterized in that: The mounting base (19) has an internal mounting groove, and the bolt (20) is slidably connected inside the mounting groove. The bolt (20) is adapted to the size of the mounting groove.

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