Front brake structure of rotary table

Abstract

The utility model discloses a front brake structure of a rotary table, which relates to the technical field of brake structures and comprises a rotating shaft, an adapter ring is sleeved on the rotating shaft, a brake shell is sleeved on the rotating shaft through a bearing, and a sealing seat is fixedly mounted on one side, close to a flange plate, of the brake shell. A brake is arranged among the sealing seat, the brake shell and the adapter ring, a rotary sealing piece is further arranged on one side of the brake, a rotor is further fixedly installed outside the rotating shaft, and a stator is arranged outside the rotor and fixed to the brake shell. The brake mechanism is arranged in front and is close to the bearing, so that the bending moment arm of the bearing is smaller, the load of the bearing is lighter, and meanwhile, the brake mechanism is far away from the encoder. Under the conditions that the structural size is the same, and the motor, the brake, the encoder and the bearing are the same in model, the front brake has more advantages, the precision loss is smaller, then the precision loss during braking can be reduced, and the using effect of the brake mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of brake structure technology, specifically a front-mounted brake structure for a turntable. Background Technology

[0002] In rotary table applications, since braking involves a sudden, forceful application to the rotating shaft, it inevitably affects precision components such as bearings and encoders. Minimizing this impact ensures the overall machine's accuracy. Currently, many manufacturers use a rear-mounted brake, placing it away from the bearing and closer to the encoder. However, this placement has two drawbacks: firstly, it creates a longer lever arm on the bearing, resulting in bending moments. If the bearing's load-bearing design margin is insufficient, the bearing will be under considerable strain. Increasing the bearing's load-bearing design margin, on the other hand, inevitably leads to larger bearing sizes, causing overall size and weight to become uncontrollable. Secondly, the proximity of the brake to the encoder significantly impacts the encoder's accuracy (such as positioning and repeatability), resulting in reduced machine tool precision. Therefore, this invention proposes a front-mounted brake structure for rotary tables. Utility Model Content

[0003] Technical problems to be solved

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a front-mounted brake structure for a turntable.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a front-mounted brake structure for a turntable, including a rotating shaft, a transition ring sleeved on the rotating shaft, a brake housing sleeved on the rotating shaft via a bearing, and a sealing seat fixedly installed on the side of the brake housing near the flange. A brake is provided between the sealing seat, the brake housing, and the transition ring. A rotary seal is also provided on one side of the brake. A rotor is fixedly installed on the outside of the rotating shaft, and a stator is provided on the outside of the rotor. The stator is fixed on the brake housing. By placing the brake in front, closer to the bearing, the bending moment arm on the bearing is smaller, the bearing load is lighter, and it is further away from the encoder. That is, with the same structural dimensions and the same model of rotor, stator, brake, encoder, and bearing, the front-mounted brake structure proposed in this application has more advantages, less precision loss, and thus reduces the loss of precision during braking, improving the performance of the braking mechanism.

[0007] Preferably, it also includes a motor plate disposed on one side of the rotor, the motor plate being sleeved and mounted on the outside of the rotating shaft.

[0008] Preferably, an encoder mounting plate is fixedly installed on one side of the brake housing, and an encoder is installed inside the encoder mounting plate.

[0009] Preferably, the device also includes a workpiece, on one side of which a clamp is fixedly mounted, and on one side of which a flange is fixedly connected.

[0010] Preferably, the flange is fixedly connected to the adapter ring, and the adapter ring is fixedly connected to the rotating shaft by bolts.

[0011] Preferably, the brake housing also has a medium channel for driving the brake operation.

[0012] Preferably, the encoder mounting plate and its interior are provided with a rotary seal.

[0013] Beneficial effects:

[0014] Compared with existing technologies, the front-mounted braking structure of this turntable has the following advantages:

[0015] This invention places the braking mechanism at the front, closer to the bearing, resulting in a smaller bending moment arm on the bearing and a lighter bearing load, while also keeping it away from the encoder. Therefore, with the same structural dimensions and the same model of motor, brake, encoder, and bearing, a front-mounted brake offers advantages, minimizing accuracy loss and thus reducing accuracy loss during braking, thereby improving the effectiveness of the braking mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the front-mounted brake structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a rear-mounted brake in existing technology;

[0019] Figure 3 This is a schematic diagram of the structure of the medium channel of this utility model.

[0020] In the picture:

[0021] 1. Workpiece; 2. Fixture; 3. Flange; 4. Sealing seat; 5. Housing; 501. Medium channel; 6. Rotor; 7. Encoder; 8. Encoder mounting plate; 9. Motor plate; 10. Stator; 11. Bearing; 12. Brake; 13. Rotary seal; 14. Adapter ring; 15. Shaft; 16. Rotary seal II. 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 1-3 As shown, this utility model provides a technical solution: a front-mounted brake structure for a turntable, including a rotating shaft 15, with an adapter ring 14 sleeved on the rotating shaft 15. A brake housing 5 is sleeved on the rotating shaft 15 via a bearing 11, and a sealing seat 4 is fixedly installed on the side of the brake housing 5 near the flange 3. A brake 12 is provided between the sealing seat 4, the brake housing 5, and the adapter ring 14. A rotary seal 13 is also provided on one side of the brake 12. A rotor 6 is fixedly installed on the outside of the rotating shaft 15, and a stator 10 is provided on the outside of the rotor 6. The stator 10 is fixed on the brake housing 5. By placing the brake 12 in front, closer to the bearing 11, the bending moment arm on the bearing 11 is smaller, the load on the bearing 11 is lighter, and it is further away from the encoder 7. That is, under the same structural dimensions and with the same model of rotor 6, stator 10, brake 12, encoder 7, and bearing 11, the front-mounted brake structure proposed in this application has more advantages, with less precision loss, thereby reducing the loss of precision during braking and improving the performance of the braking mechanism.

[0024] Please refer to the following carefully. Figure 1 and Figure 3 It also includes a motor plate 9 disposed on one side of the rotor 6. The motor plate 9 is sleeved and installed on the outside of the rotating shaft 15. The brake housing 5 is also provided with a medium channel 501 for driving the brake. An encoder mounting plate 8 is fixedly installed on one side of the brake housing 5. An encoder 7 is installed inside the encoder mounting plate 8. The encoder mounting plate 8 and the inside are provided with a rotary seal 16. The encoder mounting plate 8 is sealed to the rotating shaft 15 through the rotary seal 16.

[0025] Please refer to the following carefully. Figure 3 It also includes a workpiece 1, a clamp 2 is fixedly installed on one side of the workpiece 1, a flange 3 is fixedly connected to one side of the clamp 2, the flange 3 is fixedly connected to the adapter ring 14, and the adapter ring 14 is fixedly connected to the rotating shaft 15 by bolts.

[0026] Working principle: This application places the braking mechanism at the front, closer to the bearing, resulting in a smaller bending moment arm on the bearing and a lighter bearing load, while also keeping it away from the encoder. Therefore, with the same structural dimensions and the same model of motor, brake, encoder, and bearing, a front-mounted brake offers advantages and results in less accuracy loss.

[0027] 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 process, method, article, or apparatus.

[0028] 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 front-mounted brake structure for a turntable, comprising a rotating shaft (15), wherein a connecting ring (14) is sleeved on the rotating shaft (15), characterized in that: The rotating shaft (15) is fitted with a brake housing (5) through a bearing (11), and a sealing seat (4) is fixedly installed on the side of the brake housing (5) near the flange (3). A brake (12) is provided between the sealing seat (4), the brake housing (5) and the adapter ring (14). A rotary seal (13) is also provided on one side of the brake (12). A rotor (6) is also fixedly installed on the outside of the rotating shaft (15), and a stator (10) is provided on the outside of the rotor (6). The stator (10) is fixed on the brake housing (5).

2. The front-mounted brake structure for a turntable according to claim 1, characterized in that: It also includes a motor plate (9) disposed on one side of the rotor (6), the motor plate (9) being sleeved and installed on the outside of the rotating shaft (15).

3. The front-mounted brake structure for a turntable according to claim 1, characterized in that: An encoder mounting plate (8) is fixedly installed on one side of the brake housing (5), and an encoder (7) is installed inside the encoder mounting plate (8).

4. The front-mounted brake structure for a turntable according to claim 1, characterized in that: It also includes a workpiece (1), on one side of which a clamp (2) is fixedly installed, and on one side of which a flange (3) is fixedly connected.

5. The front-mounted brake structure for a turntable according to claim 1, characterized in that: The flange (3) is fixedly connected to the adapter ring (14), and the adapter ring (14) is fixedly connected to the rotating shaft (15) by bolts.

6. The front-mounted brake structure for a turntable according to claim 1, characterized in that: The brake housing (5) also has a medium channel (501) for driving the brake operation.

7. The front-mounted brake structure for a turntable according to claim 3, characterized in that: The encoder mounting plate (8) is provided with a rotary seal (16) inside.

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