Spindle brake device

Abstract

The application provides a main shaft brake device, which comprises a main shaft mounting shell, a flange seat, a connecting mechanism and a brake assembly. The flange seat is mounted on the main shaft mounting shell, and the brake assembly is connected with the flange seat through the connecting mechanism. The position of the brake assembly relative to the connecting mechanism can be adjusted in the radial direction of the main shaft. According to the application, the connecting mode between the brake assembly and the connecting mechanism is improved. The position of the brake assembly relative to the connecting mechanism can be adjusted while the brake assembly is fixed on the connecting mechanism. When there is a machining error in the trapezoidal mounting plate of the brake caliper in the brake or the brake of different sizes needs to be replaced, the position of the brake assembly relative to the connecting mechanism can be adjusted, so that the brake assembly and the rotating disc are always properly aligned, thereby preventing interference between the brake caliper of the brake assembly and the rotating disc.

Description

Technical Field

[0001] This invention belongs to the field of machining equipment technology, and specifically relates to a spindle braking device. Background Technology

[0002] Currently, CNC machine tools or medium-to-high-speed spindle products on the market typically have brakes designed and installed on the mounting box below the spindle assembly. Braking is then achieved by the frictional engagement between the brake caliper and the rotating disc on the spindle assembly.

[0003] In the existing technology, the brake is designed and installed on the mounting box, which requires multiple manufacturers to design and manufacture it. This increases the installation time of the spindle device on the machine tool, and the difference in manufacturing between the two manufacturers can easily lead to rework, increasing the rework manufacturing cost.

[0004] To address the aforementioned issues, existing technologies have employed a connecting mechanism to directly mount the brake onto the main shaft assembly. While this allows for brake installation and removal, it involves numerous parts, a complex structure, and high manufacturing costs. Furthermore, the springs used in the connecting mechanism are prone to failure, affecting structural functionality. The mechanism also utilizes a hexagonal structure for positioning, preventing adjustment of the brake's position relative to the connecting mechanism. If the trapezoidal mounting plate of the brake caliper has manufacturing errors or if a different sized brake is used, interference between the brake caliper and the rotating disc may occur. Summary of the Invention

[0005] Therefore, the present invention provides a spindle braking device that can solve the technical problem in the prior art where the position of the brake relative to the connecting mechanism cannot be adjusted, and if the trapezoidal mounting plate of the brake caliper inside the brake has a machining error or the brake of a different size is replaced, the brake caliper may interfere with the rotating disk.

[0006] To address the aforementioned problems, the present invention provides a spindle braking device, comprising: a spindle mounting housing, a flange seat, a connecting mechanism, and a braking assembly. The flange seat is mounted on the spindle mounting housing, and the braking assembly is connected to the flange seat via the connecting mechanism. The position of the braking assembly relative to the connecting mechanism can be adjusted in the radial direction along the spindle.

[0007] In some embodiments, the connecting mechanism includes a connecting component and a magnetic attractor, the connecting component being connected to the magnetic attractor and the flange seat respectively, and the braking component including a brake and a magnetically engaging component connected to the brake, the magnetic attractor being magnetically connected to the magnetically engaging component.

[0008] In some embodiments, the magnetic attracting member has a snap-fit ​​portion, and the magnetic engaging member has a plurality of snap-fit ​​portions. In the radial direction along the main shaft, each of the snap-fit ​​portions is spaced apart on the magnetic engaging member, and the snap-fit ​​portion is used to snap-fit ​​with any of the snap-fit ​​portions.

[0009] In some embodiments, each of the snap-fit ​​parts is evenly distributed on the magnetic attraction component, and the distance between two adjacent snap-fit ​​parts is h, where 1mm≤h≤5mm.

[0010] In some embodiments, the snap-fit ​​portion is a snap head extending along the direction of the magnetic attractor toward the magnetic mating member, and the snap-fit ​​mating portion is a slot constructed on the magnetic mating member.

[0011] In some embodiments, the magnetic attractor is an electromagnet.

[0012] In some embodiments, the connecting assembly includes a first connector and a second connector, and the magnetic suction element, the first connector, the second connector, and the flange seat are connected in sequence. The position of the first connector relative to the second connector can be adjusted in the axial direction along the main shaft.

[0013] In some embodiments, the first connector has a first groove extending through it, and the second connector has a first threaded hole. The connecting assembly further includes a first fastener having a first locked state and a first unlocked state. When the first fastener is in the first locked state, it is threaded through the first groove and into the first threaded hole to fix the first connector and the second connector. When the first fastener is in the first unlocked state, the first connector is movable relative to the second connector, and the first fastener is slidable along the extension direction of the first groove.

[0014] In some embodiments, the connecting mechanism includes a third connector and a second fastener. The third connector has a second groove extending through it. The braking assembly includes a brake with a second threaded hole. The second fastener has a second locked state and a second unlocked state. When the second fastener is in the second locked state, it is threaded through the second groove and into the second threaded hole to fix the third connector to the brake. When the second fastener is in the second unlocked state, the brake is movable relative to the third connector, and the second fastener is slidable along the extension direction of the second groove. The end of the third connector away from the brake is connected to the flange seat.

[0015] In some embodiments, the third connector includes a first portion and a second portion located on the first portion, the first portion being perpendicular to the second portion, and the second groove being formed on the second portion.

[0016] The spindle braking device provided by the present invention has the following beneficial effects:

[0017] By improving the connection method between the braking assembly and the connecting mechanism, while ensuring the braking assembly is fixed to the connecting mechanism, the position of the braking assembly relative to the connecting mechanism can also be adjusted. When there are machining errors in the trapezoidal mounting plate of the brake caliper inside the brake or when a different size brake needs to be replaced, the position of the braking assembly relative to the connecting mechanism can be adjusted to ensure that the braking assembly and the rotating disc always maintain proper alignment, thereby preventing interference between the brake caliper and the rotating disc. Furthermore, because the position of the braking assembly relative to the connecting mechanism can be adjusted, the braking assembly has greater versatility. When a different model of rotating disc needs to be replaced according to machining requirements, it is not necessary to replace it with a corresponding brake; simply adjust the braking assembly to the appropriate position. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main shaft braking device according to Embodiment 1 of the present invention;

[0020] Figure 2 This is a bottom view of the spindle braking device according to Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the magnetic suction component of the connecting mechanism of the spindle braking device according to Embodiment 1 of the present invention;

[0022] Figure 4 This is a schematic diagram of the magnetic attraction component of the braking assembly of the spindle braking device according to Embodiment 1 of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the first connecting member of the connecting mechanism of the spindle braking device according to Embodiment 1 of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the second connecting member of the connecting mechanism of the spindle braking device according to Embodiment 1 of the present invention;

[0025] Figure 7 This is a schematic diagram of the main shaft braking device according to Embodiment 2 of the present invention;

[0026] Figure 8 This is a bottom view of the spindle braking device according to Embodiment 2 of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the third connecting member of the connecting mechanism of the spindle braking device in Embodiment 2 of the present invention;

[0028] Figure 10 This is a schematic diagram of the brake assembly of the spindle braking device according to Embodiment 2 of the present invention.

[0029] The reference numerals in the attached figures are as follows:

[0030] 1. Spindle mounting housing; 2. Flange seat; 3. Connecting mechanism; 31. Magnetic suction component; 32. Snap-fit ​​part; 33. First connecting component; 34. Second connecting component; 35. First fastener; 36. Third connecting component; 37. Second fastener; 38. Third fastener; 4. Braking assembly; 41. Brake; 42. Magnetic suction component; 5. Snap-fit ​​part; 6. First slide groove; 7. First threaded hole; 8. Second slide groove; 9. Second threaded hole; 10. Third threaded hole; 11. Fourth fastener; 12. Rotary disk. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0038] See also Figures 1 to 10 As shown, according to an embodiment of the present invention, a spindle braking device is provided, comprising: a spindle mounting housing 1, a flange seat 2, a connecting mechanism 3, and a braking assembly 4. The flange seat 2 is mounted on the spindle mounting housing 1, and the braking assembly 4 is connected to the flange seat 2 through the connecting mechanism 3. The position of the braking assembly 4 relative to the connecting mechanism 3 can be adjusted in the radial direction along the spindle.

[0039] In this technical solution, by improving the connection method between the braking component 4 and the connecting mechanism 3, while ensuring that the braking component 4 is fixed on the connecting mechanism 3, the position of the braking component 4 relative to the connecting mechanism 3 can also be adjusted. When there is a machining error in the trapezoidal mounting plate of the brake caliper inside the brake 41, or when a different size brake 41 needs to be replaced, the position of the braking component 4 relative to the connecting mechanism 3 can be adjusted to ensure that the braking component 4 and the rotating disk 12 always maintain proper alignment, thereby preventing interference between the brake caliper of the braking component 4 and the rotating disk 12. Furthermore, because the position of the braking component 4 relative to the connecting mechanism 3 can be adjusted, the braking component 4 has greater versatility. When a different model of rotating disk 12 needs to be replaced according to machining requirements, it is not necessary to replace the corresponding brake 41; only the braking component 4 needs to be adjusted to the appropriate position. When the brake assembly 4 and the rotating disk 12 are accurately aligned, the brake caliper will not interfere with the rotating disk 12 in its initial state. Only when braking the rotating disk 12 is required will the brake caliper extend forward under the action of the power unit and generate friction with the rotating disk 12 to perform braking. The main shaft mounting housing 1 and the flange seat 2 are both fitted onto the outside of the main shaft, and the rotating disk 12 is mounted on the main shaft.

[0040] See also Figure 1 As shown, the connecting mechanism 3 includes a connecting component and a magnetic suction member 31. The connecting component is connected to the magnetic suction member 31 and the flange seat 2 respectively. The braking component 4 includes a brake 41 and a magnetic suction engagement member 42 connected to the brake 41. The magnetic suction member 31 and the magnetic suction engagement member 42 are magnetically connected.

[0041] In this embodiment, to prevent rust, the outer shell of the brake 41 is made of aluminum alloy. This also prevents the magnetic suction component 31 from directly magnetically attracting the brake 41. Therefore, a magnetic attraction component 42 needs to be provided on the brake 41. By using the magnetic suction component 31 and the magnetic attraction component 42 for magnetic connection, the brake assembly 4 can be fixed on the connecting mechanism 3, and the position of the brake assembly 4 relative to the connecting mechanism 3 can be adjusted. Moreover, the position adjustment of the brake assembly 4 is relatively flexible and can be adjusted in multiple directions.

[0042] See also Figure 2 As shown, the magnetic suction member 31 has a snap-fit ​​portion 32, and the magnetic suction engagement member 42 has a plurality of snap-fit ​​engagement portions 5. In the radial direction along the main shaft, each snap-fit ​​engagement portion 5 is spaced apart on the magnetic suction engagement member 42, and the snap-fit ​​portion 32 is used to snap-fit ​​with any snap-fit ​​engagement portion 5.

[0043] In this technical solution, each snap-fit ​​part 5 is equivalent to setting a scale marking part on the magnetic attraction part 42. When different models of rotary disk 12 are replaced according to processing requirements, the position adjustment of the brake assembly 4 can be accurately and quickly completed by simply snapping the snap-fit ​​part 32 of the magnetic attraction part 31 with the corresponding snap-fit ​​part 5, thereby improving the position adjustment efficiency of the brake assembly 4. At the same time, the snap-fit ​​part 32 and the snap-fit ​​part 5 also make the fixation between the magnetic attraction part 31 and the magnetic attraction part 42 more secure when they are attracted, thus making the fixation of the brake assembly 4 on the connecting mechanism 3 more secure. In particular, when the brake assembly 4 is subjected to an external force in the vertical direction, the position of the brake assembly 4 relative to the connecting mechanism 3 hardly changes.

[0044] Specifically, the radius difference of different models of rotating disk 12 shows a certain pattern, and the radius difference between two adjacent models of rotating disk 12 is fixed, generally between 1 and 5 mm. Therefore, the snap-fit ​​parts 5 need to be evenly distributed on the magnetic coupling parts 42. When the distance between two adjacent snap-fit ​​parts 5 is h, 1 mm ≤ h ≤ 5 mm. This ensures that when the snap-fit ​​parts 5 move one grid, the brake 41 will necessarily correspond to the next model of rotating disk 12, thereby achieving the accuracy and efficiency of the brake 41 position adjustment.

[0045] See also Figure 1 , Figure 3 and Figure 4 As shown, the snap-fit ​​part 32 is a snap-fit ​​head that extends along the magnetic suction member 31 toward the magnetic suction mating member 42, and the snap-fit ​​mating part 5 is a snap-fit ​​groove constructed on the magnetic suction mating member 42.

[0046] Preferably, the magnetic suction element 31 is an electromagnet, which makes the position adjustment of the braking component 4 more convenient. For example, when it is necessary to adjust the position of the braking component 4 relative to the connecting mechanism 3, the magnetic suction element 31 is de-energized, and the magnetic force between the magnetic suction element 31 and the magnetic coupling element 42 disappears. Without the obstruction of magnetic force, moving the braking component 4 becomes more convenient and effortless. After the position of the braking component 4 is adjusted, the magnetic suction element 31 is energized, and the magnetic suction element 31 and the magnetic coupling element 42 attract each other and fit tightly, thus fixing the braking component 4 to the connecting mechanism 3, thereby completing the position adjustment of the braking component 4. Furthermore, permanent magnets can be set in each slot. These permanent magnets can be flat and small in size, and they are attached to the bottom wall of the slot. When the magnetic suction element 31 is de-energized, the attraction of the permanent magnet to the magnetic suction element 31 can prevent the braking component 4 from falling due to the sudden disappearance of electromagnetic force. The magnetic coupling element 42 is made of a magnetically conductive material, such as pure iron or low-carbon steel.

[0047] In this technical solution, the magnetic suction component 31 is relatively small, resulting in lower structural strength, while the magnetic coupling component 42 is relatively larger and has higher structural strength. If the locking part 32 is designed as a slot on the magnetic suction component 31, the structural strength of the magnetic suction component 31 would be further reduced, which would be detrimental to its long-term use. However, designing the locking part 32 as a locking head increases the thickness of the magnetic suction component 31, thereby enhancing its structural strength. Furthermore, when the locking coupling part 5 is a slot on the magnetic coupling component 42, the impact on the structural strength of the magnetic coupling component 42 is not significant. This design is more reasonable. It should be noted that when the locking head and slot are engaged, the braking component 4 can be finely adjusted relative to the connecting mechanism 3 along the extension direction of the slot, further enriching the position adjustment options for the braking component 4.

[0048] See also Figure 1 As shown, the connecting assembly includes a first connector 33 and a second connector 34. The magnetic chuck 31, the first connector 33, the second connector 34, and the flange seat 2 are connected in sequence. The position of the first connector 33 relative to the second connector 34 can be adjusted in the axial direction along the main shaft.

[0049] In this embodiment, the rotating disks 12 of different models not only have different radii but also different thicknesses. In particular, the thickness difference of rotating disks 12 with larger model differences is more obvious. Therefore, the position of the braking component 4 needs to be adjusted not only in the radial direction along the main shaft but also in the axial direction along the main shaft. In the axial direction along the main shaft, when the position of the first connecting member 33 relative to the second connecting member 34 can be adjusted, the position of the braking component 4 in the axial direction along the main shaft can also be finely adjusted, thereby making the brake 41 more versatile.

[0050] See also Figure 1 , Figure 5 and Figure 6 As shown, the first connector 33 has a first groove 6 that passes through it, and the second connector 34 has a first threaded hole 7. The connecting assembly also includes a first fastener 35, which has a first locked state and a first unlocked state. When the first fastener 35 is in the first locked state, it passes through the first groove 6 and is threadedly connected to the first threaded hole 7 to fix the first connector 33 and the second connector 34. When the first fastener 35 is in the first unlocked state, the first connector 33 can move relative to the second connector 34, and the first fastener 35 can slide along the extension direction of the first groove 6.

[0051] In this technical solution, the first slide groove 6 extends axially along the main shaft. The width of the first slide groove 6 is slightly larger than the diameter of the screw portion of the first fastener 35, but smaller than the diameter of the screw head of the first fastener 35. Therefore, when the first fastener 35 is in the first locked state, the first fastener 35 will pass through the first slide groove 6 and be threaded into the first threaded hole 7. The screw head of the first fastener 35 presses against the first connector 33, so that the first connector 33 is fixed under the clamping action of the screw head and the second connector 34. When the first fastener 35 is in the first unlocked state, it is actually only the first fastener 35 that is locked. When the fastener 35 is loosened, it remains inserted into the first threaded hole 7 on the second connector 34. Moving the first connector 33 causes the threaded portion of the fastener 35 to slide along the extension direction of the first groove 6. Simultaneously, the first connector 33 moves axially relative to the second connector 34. After the position of the first connector 33 relative to the second connector 34 is adjusted, tightening the first fastener 35 completes the axial adjustment of the first connector 33, thereby completing the axial adjustment of the brake assembly 4. In this embodiment, only fasteners and two connectors are used to achieve the axial adjustment of the brake assembly 4, resulting in a simple structural design and convenient assembly and disassembly during position adjustment.

[0052] As another embodiment, see reference Figures 7 to 10 As shown, the connecting mechanism 3 includes a third connector 36 and a second fastener 37. The third connector 36 has a second groove 8 that passes through it. The braking assembly 4 includes a brake 41 with a second threaded hole 9. The second fastener 37 has a second locked state and a second unlocked state. When the second fastener 37 is in the second locked state, it passes through the second groove 8 and is threadedly connected to the second threaded hole 9 to fix the third connector 36 to the brake 41. When the second fastener 37 is in the second unlocked state, the brake 41 can move relative to the third connector 36, and the second fastener 37 can slide along the extension direction of the second groove 8. The end of the third connector 36 away from the brake 41 is connected to the flange seat 2.

[0053] In this embodiment, the second groove 8 extends radially along the main shaft. The width of the second groove 8 is slightly larger than the diameter of the screw portion of the second fastener 37, but smaller than the diameter of the screw head of the second fastener 37. Therefore, when the second fastener 37 is in the second locked state, the second fastener 37 passes through the second groove 8 and is threaded into the second threaded hole 9. The brake 41 is fixed to the third connector 36 by the screw head of the second fastener 37 being in close contact with the third connector 36. When the second fastener 37 is in the first unlocked state... In practice, only the second fastener 37 is loosened. The second fastener 37 is still inserted in the second threaded hole 9 on the third connector 36. Moving the brake 41 at this time causes the threaded portion of the second fastener 37 to slide along the extension direction of the second groove 8. Simultaneously, the brake 41 moves radially relative to the third connector 36 along the main shaft. After the position of the brake 41 relative to the third connector 36 is adjusted, simply tightening the second fastener 37 completes the radial position adjustment of the brake 41 along the main shaft. In this embodiment, only fasteners and connectors are used to achieve the radial position adjustment of the brake assembly 4 along the main shaft. This not only simplifies the structural design but also makes the assembly and disassembly of the brake 41 more convenient during position adjustment, thus improving the efficiency of brake assembly and disassembly.

[0054] Specifically, the third connector 36 includes a first part and a second part located on the first part. A second groove 8 is constructed on the second part. An embedding groove is provided at the end of the first part away from the second part. The flange seat 2 extends into the embedding groove. A third threaded hole 10 penetrating the first part is constructed on the bottom wall of the embedding groove. The connecting mechanism 3 also includes a third fastener 38. By using the third fastener 38 to pass through the third threaded hole 10 and threadedly connect with the flange seat 2, the third connector 36 can be fixed on the flange seat 2. Furthermore, since the third connector 36 needs to be connected to the flange seat 2 in the vertical direction and to the brake 41 in the horizontal direction, the design of the third connector 36 with the combination of the first part and the second part makes it easier to connect with these two components. Preferably, the first part is perpendicular to the second part, which allows the side of the brake 41 to fit tightly against the side of the second part, ensuring not only the accuracy of the brake 41's installation position but also a more secure fixation between the brake 41 and the third connector 36.

[0055] The connection method between the second connector 34 and the flange seat 2 in Embodiment 1 is the same as the connection method between the third connector 36 and the flange seat 2 in Embodiment 2, and will not be described again in this application.

[0056] Finally, it should be briefly noted that the flange seat 2 and the spindle mounting housing 1 are connected by the fourth fastener 11.

[0057] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A spindle brake apparatus, characterized by, The main shaft mounting shell (1) includes a flange seat (2), a connecting mechanism (3) and a brake assembly (4), the flange seat (2) is mounted on the main shaft mounting shell (1), the brake assembly (4) is connected with the flange seat (2) through the connecting mechanism (3), and the position of the brake assembly (4) relative to the connecting mechanism (3) can be adjusted in the radial direction of the main shaft. The connecting mechanism (3) includes a connecting assembly and a magnetic suction piece (31), the connecting assembly is connected with the magnetic suction piece (31) and the flange seat (2) respectively, the brake assembly (4) includes a brake (41) and a magnetic suction matching piece (42) connected with the brake (41), and the magnetic suction piece (31) is magnetically connected with the magnetic suction matching piece (42). The magnetic suction piece (31) has a clamping part (32), the magnetic suction matching piece (42) has a plurality of clamping matching parts (5), and the clamping matching parts (5) are arranged at intervals on the magnetic suction matching piece (42) in the radial direction of the main shaft, and the clamping part (32) is used for clamping matching with any clamping matching part (5).

2. The spindle brake apparatus of claim 1, wherein, The clamping matching parts (5) are uniformly distributed on the magnetic suction matching piece (42), and the distance between adjacent two clamping matching parts (5) is h, and 1mm≤h≤5mm.

3. The spindle brake apparatus of claim 1, wherein, The clamping part (32) is a clamping head extending from the magnetic suction piece (31) to the magnetic suction matching piece (42), and the clamping matching part (5) is a clamping groove formed on the magnetic suction matching piece (42).

4. The spindle brake apparatus of claim 1, wherein, The magnetic suction piece (31) is an electromagnet.

5. Spindle brake device according to any one of claims 1 to 4, characterized in that The connecting assembly includes a first connecting piece (33) and a second connecting piece (34), the magnetic suction piece (31), the first connecting piece (33), the second connecting piece (34) and the flange seat (2) are sequentially connected, and the position of the first connecting piece (33) relative to the second connecting piece (34) can be adjusted in the axial direction of the main shaft.

6. A spindle brake device according to claim 5, characterised in that A first sliding groove (6) penetrating through the first connecting piece (33) is formed on the first connecting piece (33), a first threaded hole (7) is formed on the second connecting piece (34), the connecting assembly further includes a first fastener (35), the first fastener (35) has a first locking state and a first unlocking state, when the first fastener (35) is in the first locking state, the first fastener (35) is threadedly connected with the first threaded hole (7) penetrating through the first sliding groove (6) to fix the first connecting piece (33) and the second connecting piece (34), when the first fastener (35) is in the first unlocking state, the first connecting piece (33) can move relative to the second connecting piece (34), and the first fastener (35) can slide in the extension direction of the first sliding groove (6).

7. The spindle brake apparatus of claim 1, wherein The connecting mechanism (3) includes a third connector (36) and a second fastener (37). The third connector (36) has a second groove (8) that passes through it. The braking assembly (4) includes a brake (41) with a second threaded hole (9). The second fastener (37) has a second locked state and a second unlocked state. When the second fastener (37) is in the second locked state, it passes through the second groove (8) and is threadedly connected to the second threaded hole (9) to fix the third connector (36) to the brake (41). When the second fastener (37) is in the second unlocked state, the brake (41) can move relative to the third connector (36), and the second fastener (37) can slide along the extension direction of the second groove (8). The end of the third connector (36) away from the brake (41) is connected to the flange seat (2).

8. The spindle brake apparatus of claim 7, wherein, The third connector (36) includes a first portion and a second portion located on the first portion, the first portion being perpendicular to the second portion, and the second groove (8) being formed on the second portion.

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