A locking synchronous motor spindle

Abstract

This utility model relates to the field of synchronous motor spindle technology and discloses a synchronous motor spindle with locking mechanism, including a direct-drive hollow motor. A second mounting base is fixedly installed on the front end face of the direct-drive hollow motor. A brake mounting seat is fixedly installed on the front end face of the second mounting base. A brake mechanism is fixedly installed on the front end face of the brake mounting seat. Multiple brake pad mechanisms are fixedly installed inside the brake mechanism. A spindle body is fixedly installed at the output end of the direct-drive hollow motor. A first limiting block is fixedly installed on the front end face of the second mounting base. A second limiting block is fixedly installed on the rear end face of the spindle body. A brake disc mechanism is engaged and fixed between the first and second limiting blocks. By directly installing the brake disc at the motor output end, the braking force can be directly applied to the motor output end during braking, allowing for rapid motor stop and reliable fastening.

Description

Technical Field

[0001] This utility model relates to the field of synchronous motor spindle technology, specifically a synchronous motor spindle with locking mechanism. Background Technology

[0002] A synchronous motor spindle is a motor spindle whose speed is strictly synchronized with the power supply frequency. It typically uses a permanent magnet synchronous motor or an electrically excited synchronous motor as the drive source. This type of spindle features high precision, high efficiency, and high dynamic response, making it suitable for machining applications requiring high precision and high efficiency, such as CNC machine tools and precision grinding machines.

[0003] Milling and turning combination machine tools require the spindle to be locked before milling operations can be performed. Traditionally, the spindle is indirectly connected to the machine tool spindle by a motor driven by a belt or gear, and the brake disc is fixed to the machine tool spindle, while the brake is fixed to the spindle box. This results in a certain buffer during emergency stops of the equipment, making it impossible to stop quickly. At the same time, traditional brake pads are insulated by heat-insulating lubricating oil, but when installing heat sinks, it is necessary to identify the application surface of the lubricating oil. If the application is incorrect, the brake pads will basically be unusable. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a synchronous motor spindle with locking mechanism, which has the advantages of strong practicality and high locking performance, thus solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a locking synchronous motor spindle, comprising a direct-drive hollow motor, a second mounting base fixedly mounted on the front end face of the direct-drive hollow motor, a brake mounting seat fixedly mounted on the front end face of the second mounting base, a brake mechanism fixedly mounted on the front end face of the brake mounting seat, multiple brake pad mechanisms fixedly mounted inside the brake mechanism, multiple No. 2 hexagon socket head cap bolts threadedly fixed between the brake mounting seat and the second mounting base and the direct-drive hollow motor, a spindle body fixedly mounted on the output end of the direct-drive hollow motor, a first limiting block fixedly mounted on the front end face of the second mounting base, a second limiting block fixedly mounted on the rear end face of the spindle body, a brake disc mechanism snapped between the first and second limiting blocks, and multiple No. 3 hexagon socket head cap bolts threadedly fixed between the spindle body and the second limiting block.

[0006] As a preferred technical solution of this utility model, a No. 1 mounting base is fixedly installed on the rear end face of the direct drive hollow motor, and a plurality of No. 1 internal hex bolts are threadedly fixed between the No. 1 mounting base and the direct drive hollow motor, and a spindle box is fixedly installed on the rear end face of the No. 1 mounting base.

[0007] As a preferred embodiment of the present invention, the brake mechanism includes a lower brake disc seat and an upper brake disc seat, and a plurality of No. 4 internal hex bolts are threadedly fixed between the lower brake disc seat and the upper brake disc seat.

[0008] As a preferred embodiment of the present invention, the brake disc mechanism includes a brake disc body, and a plurality of heat dissipation holes are provided on the outer side of the brake disc body.

[0009] As a preferred technical solution of this utility model, a first snap-fit ​​hole is provided on the front end face of the brake disc body, and a plurality of second snap-fit ​​holes are provided on the front end face of the brake disc body.

[0010] As a preferred embodiment of the present invention, the brake pad mechanism includes a brake pad base, a heat insulation block is fixedly installed on the upper surface of the brake pad base, and a brake pad body is fixedly installed on the front surface of the heat insulation block.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This locking synchronous motor spindle connects the output end of the direct-drive hollow motor directly to the spindle, and the motor rotor is the lathe spindle. The stator of the motor is fixedly connected to the spindle box, and the brake disc is fixed on the spindle, i.e. the motor rotor. In case of emergency stop, the braking force will be directly applied to the motor rotor, and the locking is reliable.

[0013] 2. The locking synchronous motor spindle has a heat insulation block inside the brake pad mechanism. The heat insulation block isolates the heat transfer during braking, preventing the large amount of heat generated by the brake pad body and brake disc mechanism from being transferred to the brake and affecting the service life of the brake. This eliminates the need to apply heat insulation lubricant and the need to distinguish the application surface, saving time and effort. Attached Figure Description

[0014] Figure 1 This is an isometric schematic diagram of the present invention;

[0015] Figure 2 This is a front view schematic diagram of the present utility model;

[0016] Figure 3 This is a side view of the present invention;

[0017] Figure 4 This is a partial enlarged view of part A of the present invention;

[0018] Figure 5 This is an isometric schematic diagram of the brake mechanism of this utility model;

[0019] Figure 6 This is an isometric schematic diagram of the brake disc mechanism of this utility model;

[0020] Figure 7 This is an isometric schematic diagram of the brake pad mechanism of this utility model.

[0021] In the diagram: 1. Spindle box; 2. Mounting base No. 1; 3. Socket headstock No. 1; 4. Direct drive hollow motor; 5. Mounting base No. 2; 6. Socket headstock No. 2; 7. Brake mounting base; 8. Brake mechanism; 9. Brake disc mechanism; 10. Spindle body; 11. Socket headstock No. 3; 12. Limiting block No. 1; 13. Brake pad mechanism; 14. Limiting block No. 2; 801. Socket headstock No. 4; 802. Lower brake disc seat; 803. Upper brake disc seat; 901. Brake disc body; 902. Heat dissipation hole; 903. Snap-fit ​​hole No. 1; 904. Snap-fit ​​hole No. 2; 1301. Brake pad base; 1302. Heat insulation block; 1303. Brake pad body. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-7 A locking synchronous motor spindle includes a direct-drive hollow motor 4, a second mounting base 5 fixedly mounted on the front end face of the direct-drive hollow motor 4, a brake mounting seat 7 fixedly mounted on the front end face of the second mounting base 5, a brake mechanism 8 fixedly mounted on the front end face of the brake mounting seat 7, multiple brake pad mechanisms 13 fixedly mounted inside the brake mechanism 8, multiple second-grade hexagon socket head cap bolts 6 threadedly fixed between the brake mounting seat 7, the second mounting base 5, and the direct-drive hollow motor 4, and a spindle body 10 fixedly mounted on the output end of the direct-drive hollow motor 4. A first limit block 12 is fixedly installed on the front end face of the mounting base 5. A second limit block 14 is fixedly installed on the rear end face of the spindle body 10. A brake disc mechanism 9 is snapped between the first limit block 12 and the second limit block 14. Multiple No. 3 hexagon socket head cap bolts 11 are threadedly fixed between the spindle body 10 and the second limit block 14. A first mounting base 2 is fixedly installed on the rear end face of the direct drive hollow motor 4. Multiple No. 1 hexagon socket head cap bolts 3 are threadedly fixed between the first mounting base 2 and the direct drive hollow motor 4. A spindle box 1 is fixedly installed on the rear end face of the first mounting base 2.

[0024] In the above structure, by installing the brake mechanism 8 at the front end of the direct drive hollow motor 4, installing the brake pad mechanism 13 inside the brake mechanism 8, and installing the brake disc mechanism 9 at the output end of the direct drive hollow motor 4, when braking, the two brake pad mechanisms 13 will clamp the brake disc mechanism 9, and apply the braking force directly to the output end of the motor, which can quickly stop the motor and lock it reliably.

[0025] In a preferred embodiment, the brake mechanism 8 includes a lower brake disc seat 802 and an upper brake disc seat 803, with a plurality of No. 4 hexagon socket head cap bolts 801 threadedly fixed between the lower brake disc seat 802 and the upper brake disc seat 803.

[0026] In the aforementioned mechanism, the lower brake disc seat 802 and the upper brake disc seat 803 are connected and fixed by a No. 4 hexagon socket head cap screw 801.

[0027] In a preferred embodiment, the brake disc mechanism 9 includes a brake disc body 901, with a plurality of heat dissipation holes 902 on the outer side of the brake disc body 901, a first snap-fit ​​hole 903 on the front end face of the brake disc body 901, and a plurality of second snap-fit ​​holes 904 on the front end face of the brake disc body 901.

[0028] In the above structure, the first snap-fit ​​hole 903 at the front end of the brake disc body 901 is used to snap onto the output end of the direct drive hollow motor 4, and the second snap-fit ​​hole 904 is used to fit the third hexagon socket bolt 11, thereby fixing the brake disc body 901 between the two limit blocks. The heat dissipation hole 902 is used to dissipate the heat generated between the brake disc and the brake pads during the braking process.

[0029] In a preferred embodiment, the brake pad mechanism 13 includes a brake pad base 1301, a heat insulation block 1302 is fixedly installed on the upper end surface of the brake pad base 1301, and a brake pad body 1303 is fixedly installed on the front end surface of the heat insulation block 1302.

[0030] In the above structure, the motor is stopped suddenly by the brake pad body 1303, and the heat insulation block 1302 can isolate the heat generated between the brake pad body 1303 and the brake disc mechanism 9 during braking, preventing high temperature from affecting the service life of the brake.

[0031] Working principle: By directly connecting the output end of the direct drive hollow motor 4 to the main spindle, the motor rotor becomes the lathe spindle. The stator of the motor is fixedly connected to the spindle box 1. The brake disc is then fixed on the main spindle, i.e. the motor rotor. In case of emergency stop, the braking force will be directly applied to the motor rotor, and the locking is reliable.

[0032] Secondly, by setting a heat insulation block 1302 inside the brake pad mechanism 13, the heat insulation block 1302 isolates the heat transfer during braking, preventing the large amount of heat generated by the brake pad body 1303 and the brake disc mechanism 9 from being transferred to the brake during braking, thus affecting the service life of the brake. In this way, there is no need to apply heat insulation lubricating oil, and there is no need to distinguish the application surface, saving time and effort.

[0033] 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 synchronous motor spindle with locking mechanism, comprising a direct-drive hollow motor (4), characterized in that: The front end of the direct drive hollow motor (4) is fixedly mounted with a second mounting base (5), the front end of the second mounting base (5) is fixedly mounted with a brake mounting seat (7), the front end of the brake mounting seat (7) is fixedly mounted with a brake mechanism (8), the brake mechanism (8) is fixedly mounted with multiple brake pad mechanisms (13), the brake mounting seat (7) and the second mounting base (5) are threadedly fixed with multiple second-sized hexagonal bolts (6) between the direct drive hollow motor (4), the output end of the direct drive hollow motor (4) is fixedly mounted with a spindle body (10), the front end of the second mounting base (5) is fixedly mounted with a first-sized limit block (12), the rear end of the spindle body (10) is fixedly mounted with a second-sized limit block (14), the first-sized limit block (12) and the second-sized limit block (14) are snapped together with a brake disc mechanism (9), and the spindle body (10) and the second-sized limit block (14) are threadedly fixed with multiple third-sized hexagonal bolts (11).

2. A synchronous motor spindle with locking mechanism according to claim 1, characterized in that: The direct-drive hollow motor (4) has a No. 1 mounting base (2) fixedly installed on its rear end face. Multiple No. 1 internal hex bolts (3) are threaded between the No. 1 mounting base (2) and the direct-drive hollow motor (4). The No. 1 mounting base (2) has a spindle box (1) fixedly installed on its rear end face.

3. A synchronous motor spindle with locking mechanism according to claim 1, characterized in that: The brake mechanism (8) includes a lower brake disc seat (802) and an upper brake disc seat (803), and a plurality of No. 4 internal hex bolts (801) are threadedly fixed between the lower brake disc seat (802) and the upper brake disc seat (803).

4. A synchronous motor spindle with locking mechanism according to claim 1, characterized in that: The brake disc mechanism (9) includes a brake disc body (901), and a plurality of heat dissipation holes (902) are provided on the outer side of the brake disc body (901).

5. A synchronous motor spindle with locking mechanism according to claim 4, characterized in that: The front end face of the brake disc body (901) has a first snap-fit ​​hole (903) and a plurality of second snap-fit ​​holes (904).

6. A synchronous motor spindle with locking mechanism according to claim 1, characterized in that: The brake pad mechanism (13) includes a brake pad base (1301), a heat insulation block (1302) is fixedly installed on the upper surface of the brake pad base (1301), and a brake pad body (1303) is fixedly installed on the front surface of the heat insulation block (1302).

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