A floating spindle

Abstract

The present invention discloses a floating spindle, including a mounting mechanism and a swing mechanism both in the shape of a circular ring, wherein the mounting mechanism is coaxially mounted on the spindle flange, the swing mechanism is used to swingably connect with the side of the mounting mechanism away from the spindle flange, and the swing mechanism is coaxially distributed with the mounting mechanism, and a grinding device is coaxially mounted on the side of the swing mechanism away from the mounting mechanism, and the grinding device can drive the swing mechanism to swing relative to the mounting mechanism under the action of an external force. The grinding device described in the present application can generate floating during the grinding process and can swing along the contour of the workpiece, and is suitable for grinding burrs of different sizes, which is beneficial to improving processing efficiency, processing stability and processing quality.

Description

Technical Field

[0001] The invention relates to the technical field of robot-assisted tools, and in particular to a floating spindle. Background Art

[0002] At present, some domestic factories mostly use hand-held pneumatic and electric tools or robots with end tools for grinding when removing burrs and flash from metal parts. The processing methods using hand-held pneumatic and electric tools are likely to lead to an increase in product defective rates and low efficiency, and unqualified surface quality will occur after processing. The use of robots with end tools for automatic grinding may cause the tool to break, the tool to be damaged, or the part to be damaged during the burr removal process due to the large burrs on the parts themselves. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a spindle that can float according to the size of the burr, which can effectively improve the processing efficiency, processing stability and processing quality. The technical solution adopted is:

[0004] A floating spindle comprises a mounting mechanism and a swinging mechanism, both of which are in the form of annular rings. The mounting mechanism is used to be coaxially mounted on a spindle flange of a grinding device, the swinging mechanism is used to be swingably connected to a side of the mounting mechanism away from the spindle flange, and the swinging mechanism is coaxially distributed with the mounting mechanism. A grinding device is used to be coaxially mounted on a side of the swinging mechanism away from the mounting mechanism, and the grinding device can drive the swinging mechanism to swing relative to the mounting mechanism under the action of an external force.

[0005] Preferably, the swing mechanism includes a mounting seat, a spherical bearing and a connecting assembly, and the mounting mechanism is provided with a boss in the shape of an annular ring and coaxially distributed therewith on the side away from the main shaft flange, the mounting seat is annular, the mounting seat is coaxially sleeved on the boss, and is coaxially mounted on the boss through the spherical bearing, and there is a gap between the mounting seat and the mounting mechanism, the mounting seat is connected to the mounting mechanism through the connecting assembly arranged therebetween, and the connecting assembly is used to prevent the mounting seat from rotating with its axis as the rotation axis.

[0006] Preferably, the connecting assembly includes a plurality of bolts and a plurality of arc-shaped spring sheets, the plurality of spring sheets are coaxially arranged outside the boss and distributed sequentially along its circumference, and any two adjacent spring sheets overlap each other at one end close to each other, and any two adjacent spring sheets overlap each other at one end provided with a through hole penetrating the main shaft flange axially, the plurality of arc-shaped spring sheets have a plurality of through holes, and the plurality of through holes correspond one-to-one to the plurality of bolts, a threaded hole matching at least one through hole is provided on one side of the mounting mechanism close to the mounting seat, and a threaded hole matching the remaining through holes is provided on one side of the mounting seat close to the mounting mechanism, and one end of each bolt away from its head passes through the corresponding through hole and is screwed into the corresponding threaded hole.

[0007] Preferably, it also includes a plurality of buffers, the mounting seat is provided with a plurality of mounting holes which penetrate the mounting seat along its axial direction, and the plurality of mounting holes correspond one-to-one to the plurality of buffers, the plurality of mounting holes are evenly distributed along the circumference of the mounting seat, each of the buffers is respectively installed in the corresponding mounting hole, and its impact head faces the mounting mechanism and extends out of the corresponding mounting hole.

[0008] Preferably, the mounting mechanism has an airtight chamber and a plurality of piston columns, and a plurality of piston holes distributed along the axial direction of the main shaft flange are provided on one side of the mounting mechanism close to the mounting seat, the plurality of piston holes are all connected with the airtight chamber, the plurality of piston holes correspond one-to-one to the plurality of piston columns, and the plurality of piston holes are evenly distributed along the circumferential direction of the main shaft flange, the plurality of piston columns are respectively slidably installed in the piston holes, and can respectively slide in the corresponding piston holes, the mounting mechanism is provided with an air inlet hole connected to the outside, the air inlet hole is used to connect with an external air source, and the external air source is used to inflate the airtight chamber, so that the piston column extends out of the piston hole and into the gap under the action of air pressure to resist the mounting seat.

[0009] Preferably, it also includes an anti-collision mechanism, which has a stationary component and a moving component, both of which are annular. The stationary component is coaxially installed on the side of the mounting mechanism close to the mounting seat, and the moving component is coaxially installed on the side of the mounting seat close to the mounting mechanism and extends into the gap. Under the action of external force, the mounting seat can drive the moving component to swing and collide with the stationary component to avoid collision between the mounting seat and the mounting mechanism.

[0010] Preferably, the anti-collision mechanism also includes a controller and a relay, the stationary component and the moving component are both conductive elements, the stationary component and the moving component are electrically connected to the controller respectively, the two ends of the relay coil are electrically connected to the stationary component and the moving component respectively, and its contacts are used to connect to the grinding equipment, and the mounting seat drives the moving component to swing and approach the stationary component and be electrically connected to it under the action of external force, the coil of the relay is energized, and the grinding equipment is shut down, or the moving component moves away from the stationary component and disconnects the electrical connection with the stationary component, the coil of the relay is de-energized, and the grinding equipment runs.

[0011] Preferably, the stationary component includes a stationary insulating ring and a stationary conductive ring, and the moving component includes an moving insulating ring and an moving conductive ring, the stationary insulating ring is coaxially fixedly mounted on the mounting mechanism, the stationary conductive ring is coaxially fixedly mounted on a side of the stationary insulating ring close to the gap, and the side of the stationary conductive ring close to the gap is flush with a side of the mounting mechanism close to the gap, the moving insulating ring is coaxially fixedly mounted on the mounting seat, the moving conductive ring is coaxially mounted on a side of the moving insulating ring close to the gap, and the side of the moving conductive ring close to the mounting mechanism extends into the gap, the moving conductive ring and the stationary conductive ring are electrically connected to the controller respectively, and the two ends of the relay coil are connected to the moving conductive ring and the stationary conductive ring respectively.

[0012] Preferably, the action component also includes a plurality of screws, and the action insulating ring and the action conductive ring are respectively provided with a plurality of screw holes corresponding to the plurality of screws one by one, and the plurality of screw holes are evenly distributed along the circumference of the mounting seat, and the screw holes on the action insulating ring and the action conductive ring correspond one by one, and the ends of the plurality of screws away from their heads are respectively screwed into the corresponding screw holes on the corresponding action insulating ring and the action conductive ring in sequence.

[0013] Preferably, the action component also includes a plurality of compression springs, and the plurality of compression springs correspond to the plurality of screws one by one. The plurality of compression springs are respectively sleeved on the corresponding screws and are located between the action insulating ring and the action conductive ring. The two ends of each compression spring are respectively against the side of the action insulating ring and the action conductive ring that are close to each other.

[0014] The grinding device installed on the swing mechanism can generate floating space during the grinding process and can swing along the contour of the workpiece. It is suitable for grinding burrs of different sizes, which is beneficial to improving processing efficiency, processing stability and processing quality.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the floating spindle according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the floating spindle without the dust cover according to the embodiment of the present invention;

[0019] Figure 3 A top view of the floating spindle according to an embodiment of the present invention;

[0020] Figure 4 for Figure 3 Middle AA section view;

[0021] Figure 5 An exploded view of the structure of the floating spindle according to an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the connection component described in an embodiment of the present invention.

[0023] The specific meanings of the reference numerals are as follows:

[0024] 100. Spindle flange; 200. Grinding device;

[0025] 1. Installation mechanism; 11. Airtight chamber; 12. Piston column; 13. Piston hole; 14. Cover plate; 15. Floating seat; 2. Swing mechanism; 21. Mounting seat; 22. Spherical bearing; 23. Connecting assembly; 231. Bolt; 232. Spring sheet; 3. Buffer; 4. Anti-collision mechanism; 41. Stationary assembly; 411. Stationary insulating ring; 412. Stationary conductive ring; 42. Action assembly; 421. Action insulating ring; 422. Action conductive ring; 423. Screw; 424. Compression spring; 5. Dust cover.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-6The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] Reference Figure 1-6 , an embodiment of the present invention is proposed, the floating spindle described in this embodiment includes a mounting mechanism 1 and a swinging mechanism 2, both of which are ring-shaped, the mounting mechanism 1 is used to be coaxially mounted on the spindle flange 100 of the grinding equipment, the swinging mechanism 2 is used to be swingably connected to the side of the mounting mechanism 1 away from the spindle flange 100, and the swinging mechanism 2 is coaxially distributed with the mounting mechanism 1, the grinding device 200 is used to be coaxially mounted on the side of the swinging mechanism 2 away from the mounting mechanism 1, and the grinding device 200 can drive the swinging mechanism 2 to swing relative to the mounting mechanism 1 under the action of external force.

[0030] When the floating spindle described in this embodiment is working, the grinding device 200 installed on the swing mechanism 2 grinds the workpiece. During the grinding process, the grinding device 200 can drive the swing mechanism 2 to swing relative to the mounting mechanism 1, so that the grinding device 200 can be offset during the grinding process and can swing along the contour of the workpiece. It is suitable for grinding burrs of different sizes and is beneficial to improving processing efficiency, processing stability and processing quality.

[0031] In this embodiment, the swing mechanism 2 includes a mounting seat 21, a spherical bearing 22 and a connecting assembly 23. The mounting mechanism 1 is provided with a ring-shaped boss coaxially distributed therewith on the side away from the spindle flange 100. The mounting seat 21 is ring-shaped, and the mounting seat 21 is coaxially sleeved on the boss and coaxially mounted on the boss through the spherical bearing 22. There is a gap between the mounting seat 21 and the mounting mechanism 1. The mounting seat 21 is connected to the mounting mechanism 1 through the connecting assembly 23 arranged therebetween. The connecting assembly 23 is used to prevent the mounting seat 21 from rotating with its axis as the rotation axis.

[0032] The above-mentioned joint bearing 22 allows the mounting seat 21 to swing relative to the mounting mechanism 1, and the rotation of the mounting seat 21 on the joint bearing 22 is limited by the connecting component 23, so that the mounting seat 21 can swing relative to the mounting mechanism 1, so that when the floating spindle is running, the mounting mechanism 1 and the mounting seat 21 drive the grinding device 200 to rotate synchronously, and the mounting seat 21 can swing relative to the boss, and the structure is stable.

[0033] Further, the connecting assembly 23 includes a plurality of bolts 231 and a plurality of arc-shaped spring sheets 232, the plurality of spring sheets 232 are coaxially arranged outside the boss and distributed in sequence along its circumference, and any two adjacent spring sheets 232 overlap each other at one end close to each other, and any two adjacent spring sheets 232 overlap each other at one end provided with a through hole penetrating the main shaft flange 100 axially, the plurality of arc-shaped spring sheets 232 have a plurality of through holes, and the plurality of through holes correspond one-to-one to the plurality of bolts 231, a threaded hole matching at least one through hole is provided on one side of the mounting mechanism 1 close to the mounting seat 21, and a threaded hole matching the remaining through holes is provided on one side of the mounting seat 21 close to the mounting mechanism 1, and each of the bolts 231 has an end away from its head passing through the corresponding through hole and screwed into the corresponding threaded hole.

[0034] The plurality of spring sheets 232 can be deformed along with the mounting seat 21 so that the connecting assembly 23 can swing along with the mounting seat 21 , and the plurality of spring sheets 232 are connected to each other to limit the rotation of the mounting seat 21 , and the structure is simple and reliable.

[0035] Preferably, it also includes a plurality of buffers 3, and the mounting seat 21 is provided with a plurality of mounting holes penetrating the mounting seat 21 along its axial direction, and the plurality of mounting holes correspond one-to-one to the plurality of buffers 3, and the plurality of mounting holes are evenly distributed along the circumferential direction of the mounting seat 21, and each of the buffers 3 is respectively installed in the corresponding mounting hole, and its impact head faces the mounting mechanism 1 and extends out of the corresponding mounting hole.

[0036] When the swing angle of the workpiece of the mounting seat 21 changes too quickly, the impacted head of the buffer 3 abuts against the side of the mounting mechanism 1 close to the gap, avoiding a direct collision between the mounting seat 21 and the mounting mechanism 1, and slowing down the speed of the angle change of the mounting seat 21, avoiding the floating spindle from breaking, which is beneficial to extending the service life of the floating spindle.

[0037] Preferably, the mounting mechanism 1 has an airtight chamber 11 and a plurality of piston columns 12, and a plurality of piston holes 13 distributed axially along the main shaft flange 100 are provided on one side of the mounting mechanism 1 close to the mounting seat 21, and the plurality of piston holes 13 are all connected with the airtight chamber 11, and the plurality of piston holes 13 correspond one-to-one to the plurality of piston columns 12, and the plurality of piston holes 13 are evenly distributed along the circumferential interval of the main shaft flange 100, and the plurality of piston columns 12 are respectively slidably mounted in the piston holes 13, and can respectively slide in the corresponding piston holes 13, and the mounting mechanism 1 is provided with an air inlet hole connected to the outside, and the air inlet hole is used to connect with an external air source, and the external air source is used to inflate the airtight chamber 11, so that the piston column 12 extends out of the piston hole 13 under the action of air pressure and extends into the gap to abut against the mounting seat 21.

[0038] One end of the multiple piston columns 12 close to the mounting seat 21 is respectively abutted against it. When one side of the mounting seat 21 swings close to the mounting mechanism 1 under the action of the workpiece, the mounting seat 21 overcomes the air pressure to push the piston column 12 on the corresponding side to move in the corresponding piston hole 13 close to the spindle flange 100, and the piston column 12 on the other side continues to extend out of the corresponding piston hole 13 under the action of air pressure, so that the side of the mounting seat 21 close to the mounting mechanism 1 is always abutted against the multiple piston columns 12, thereby ensuring the stability of the swinging of the mounting seat 21.

[0039] Preferably, an air pressure regulating valve is provided on the air inlet, and the air pressure regulating valve is used to adjust the air pressure in the airtight chamber to adjust the size of the air pressure that needs to be overcome when the mounting seat 21 swings.

[0040] The mounting mechanism 1 includes a cover plate 14 and a floating seat 15, both of which have circular cross-sections. The cover plate 14 is used for being coaxially fixedly mounted on the main shaft flange 100, and the floating seat 15 is used for being coaxially fixedly mounted on the side of the cover plate 14 away from the main shaft flange 100, and a closed airtight chamber 11 is formed between the floating seat 15 and the cover plate 14, the air inlet hole is arranged on the cover plate 14, a plurality of piston holes 13 are arranged on the side of the floating seat 15 away from the cover plate 14, the boss is coaxially arranged on the side of the floating seat 15 close to the mounting seat 21, and the connecting assembly 23 is used to connect the floating seat 15 and the mounting seat 21.

[0041] like Figure 3As shown, the floating seat 15 is mounted on the cover plate 14 by a plurality of bolts, and an airflow gap is provided between the cover plate 14 and the floating seat 15, one end of each piston hole 13 away from the mounting seat 21 is connected with the airflow gap, and an airflow channel is provided on the cover plate 14, one end of the airflow channel passes through the cover plate 14 and forms the air inlet, and the other end thereof extends to be connected with the airflow gap.

[0042] Preferably, it also includes an anti-collision mechanism 4, which has a stationary component 41 and an action component 42, both of which are annular. The stationary component 41 is coaxially installed on the side of the mounting mechanism 1 close to the mounting seat 21, and the action component 42 is coaxially installed on the side of the mounting seat 21 close to the mounting mechanism 1 and extends into the gap. The mounting seat 21 can drive the action component 42 to swing under the action of external force to make it collide with the stationary component 41, so as to avoid the mounting seat 21 from colliding with the mounting mechanism 1.

[0043] When the mounting seat 21 swings at a large angle under the action of the workpiece, the stationary component 41 and the moving component 42 collide first, thereby avoiding direct collision between the mounting seat 21 and the floating seat 15, which is beneficial to prolonging the service life of the floating spindle.

[0044] Preferably, the anti-collision mechanism 4 also includes a controller and a relay, the stationary component 41 and the moving component 42 are both conductive elements, the stationary component 41 and the moving component 42 are electrically connected to the controller respectively, the two ends of the relay coil are electrically connected to the stationary component 41 and the moving component 42 respectively, and its contacts are used to connect the grinding equipment, and the mounting seat 21 drives the moving component 42 to swing and approach the stationary component 41 and be electrically connected to it under the action of external force, the coil of the relay is energized, and the grinding equipment is shut down, or the moving component 42 is away from the stationary component 41 and disconnected from the stationary component 41, the coil of the relay is de-energized, and the grinding equipment is running.

[0045] In this embodiment, the grinding equipment is a robot, and the mounting mechanism 1 is used to be installed on the driving end of the robot. The contacts of the relay are used to be electrically connected to the controller of the robot. When the mounting seat 21 swings at a large angle under the action of the workpiece, the action component 42 and the static component 41 contact each other and are electrically connected, the coil of the relay is energized, and the robot is powered off and shut down to avoid the mounting seat 21 from swinging at a large angle under the action of the workpiece, thereby limiting the swing angle of the workpiece, thereby avoiding the occurrence of knife breakage, tool damage or part damage in the entire process of burr removal due to large burrs on the parts themselves, insufficient robot rigidity, inaccurate positioning, and debugging errors by on-site engineers.

[0046] In the above embodiment, the stationary component 41 includes a stationary insulating ring 411 and a stationary conductive ring 412, and the moving component 42 includes an moving insulating ring 421 and an moving conductive ring 422. The stationary insulating ring 411 is coaxially fixedly mounted on the mounting mechanism 1, and the stationary conductive ring 412 is coaxially fixedly mounted on a side of the stationary insulating ring 411 close to the gap, and the side of the stationary conductive ring 412 close to the gap is flush with the side of the mounting mechanism 1 close to the gap. The moving insulating ring 421 is coaxially fixedly mounted on the mounting seat 21, and the moving conductive ring 422 is coaxially mounted on a side of the moving insulating ring 421 close to the gap, and the side of the moving conductive ring 422 close to the mounting mechanism 1 extends into the gap. The moving conductive ring 422 and the stationary conductive ring 412 are electrically connected to the controller respectively, and the two ends of the relay coil are connected to the moving conductive ring 422 and the stationary conductive ring 412 respectively.

[0047] The stationary insulating ring 411 and the moving insulating ring 421 are made of insulating materials to prevent interference from other signals;

[0048] The stationary conductive ring 412 and the moving conductive ring 422 can be made of conductive materials; or can be made of insulating materials, and a conductive layer is provided on the side where the stationary conductive ring 412 and the moving conductive ring 422 are close to each other.

[0049] Preferably, the action component 42 also includes a plurality of screws 423, and the action insulating ring 421 and the action conductive ring 422 are respectively provided with a plurality of screw holes corresponding to the plurality of screws 423, and the plurality of screw holes are evenly distributed along the circumferential interval of the mounting seat 21, and the screw holes on the action insulating ring 421 and the action conductive ring 422 correspond to each other one by one, and the ends of the plurality of screws 423 away from their heads are respectively screwed into the corresponding screw holes on the corresponding action insulating ring 421 and the action conductive ring 422 in turn.

[0050] The screw 423 can be screwed by an external force to adjust the distance between the moving conductive ring 422 and the stationary conductive ring 412 , thereby adjusting the swing angle range of the mounting base 21 .

[0051] Preferably, the action component 42 also includes a plurality of compression springs 424, and the plurality of compression springs 424 correspond one to one with the plurality of screws 423. The plurality of compression springs 424 are respectively sleeved on the corresponding screws 423 and are located between the action insulating ring 421 and the action conductive ring 422. The two ends of each compression spring 424 are respectively against the side of the action insulating ring 421 and the action conductive ring 422 that are close to each other.

[0052] The plurality of compression springs 424 are used to unload the impact force between the moving conductive ring 422 and the stationary conductive ring 412 . The compression springs 424 can reduce the impact force on the floating spindle, which is beneficial to prolonging the service life of the floating spindle.

[0053] Preferably, it further comprises a cylindrical dust cover 5 , which is coaxially sleeved on the floating seat 15 , and two ends of the dust cover 5 are respectively connected and fixed to the floating seat 15 and the action insulating ring 421 .

[0054] The dust cover 5 is sleeved on the floating spindle and is used to prevent impurities such as cutting dust and dust generated during the grinding process from entering the mounting mechanism 1, the anti-collision mechanism 4 and the swing mechanism 2.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A floating spindle, characterized in that: The invention comprises a mounting mechanism (1) and a swing mechanism (2) both in the form of an annular ring, wherein the mounting mechanism (1) is coaxially mounted on a main shaft flange (100) of a grinding device, the swing mechanism (2) is swingably connected to a side of the mounting mechanism (1) away from the main shaft flange (100), and the swing mechanism (2) is coaxially distributed with the mounting mechanism (1), and the grinding device (200) is coaxially mounted on a side of the swing mechanism (2) away from the mounting mechanism (1), and the grinding device (200) can drive the swing mechanism (2) to swing relative to the mounting mechanism (1) under the action of an external force; The swing mechanism (2) comprises a mounting seat (21), a joint bearing (22) and a connecting assembly (23); a boss in the shape of an annular ring and coaxially distributed with the main shaft flange (100) is provided on a side of the mounting mechanism (1) away from the main shaft flange (100); the mounting seat (21) is annular; the mounting seat (21) is coaxially sleeved on the boss and coaxially mounted on the boss via the joint bearing (22); a gap is provided between the mounting seat (21) and the mounting mechanism (1); the mounting seat (21) and the mounting mechanism (1) are connected via the connecting assembly (23) arranged therebetween; the connecting assembly (23) is used to prevent the mounting seat (21) from rotating with its axis as the rotation axis; The connecting assembly (23) comprises a plurality of bolts (231) and a plurality of arc-shaped spring sheets (232). The plurality of spring sheets (232) are coaxially arranged outside the boss and distributed in sequence along the circumference thereof, and any two adjacent spring sheets (232) overlap each other at one end close to each other, and any two adjacent spring sheets (232) overlap each other at one end thereof, and a through hole is provided which penetrates the two ends axially through the main shaft flange (100). The plurality of arc-shaped spring sheets (232) have a plurality of through holes, and the plurality of through holes correspond to the plurality of bolts (231) one by one. A threaded hole matching at least one of the through holes is provided on one side of the mounting mechanism (1) close to the mounting seat (21), and a threaded hole matching the remaining through holes is provided on one side of the mounting seat (21) close to the mounting mechanism (1). An end of each bolt (231) away from its head passes through the corresponding through hole and is screwed into the corresponding threaded hole. It also includes a plurality of buffers (3), the mounting seat (21) being provided with a plurality of mounting holes penetrating the mounting seat along its axial direction, and the plurality of mounting holes corresponding to the plurality of buffers (3) one by one, the plurality of mounting holes being evenly distributed along the circumference of the mounting seat (21), each of the buffers (3) being respectively mounted in the corresponding mounting hole, and its impacted head facing the mounting mechanism (1) and extending out of the corresponding mounting hole.

2. The floating spindle according to claim 1, characterized in that: The mounting mechanism (1) comprises an airtight chamber (11) and a plurality of piston columns (12), and a plurality of piston holes (13) are arranged on a side of the mounting mechanism (1) close to the mounting seat (21) and distributed along the axial direction of the main shaft flange (100), the plurality of piston holes (13) are all connected to the airtight chamber (11), the plurality of piston holes (13) correspond to the plurality of piston columns (12) one by one, and the plurality of piston holes (13) are arranged along the circumference of the main shaft flange (100). The piston rods (12) are evenly distributed at intervals, and are respectively slidably installed in the piston holes (13) and can slide in the corresponding piston holes (13). The installation mechanism (1) is provided with an air inlet hole connected to the outside, and the air inlet hole is used to communicate with an external air source. The external air source is used to inflate the airtight chamber (11) so that the piston rods (12) extend out of the piston holes (13) and extend into the gap under the action of air pressure to abut against the installation seat (21).

3. The floating spindle according to claim 1, characterized in that: The anti-collision mechanism (4) further comprises a stationary component (41) and an action component (42) both in the form of an annular shape. The stationary component (41) is coaxially mounted on a side of the mounting mechanism (1) close to the mounting seat (21). The action component (42) is coaxially mounted on a side of the mounting seat (21) close to the mounting mechanism (1) and extends into the gap. The mounting seat (21) can drive the action component (42) to swing under the action of an external force so that it collides with the stationary component (41) to avoid a collision between the mounting seat (21) and the mounting mechanism (1).

4. The floating spindle according to claim 3, characterized in that: The anti-collision mechanism (4) further comprises a controller and a relay. The stationary component (41) and the action component (42) are both conductive elements. The stationary component (41) and the action component (42) are respectively electrically connected to the controller. The two ends of the relay coil are respectively electrically connected to the stationary component (41) and the action component (42). The contacts are used to connect to the grinding equipment. Under the action of an external force, the mounting seat (21) drives the action component (42) to swing and approach the stationary component (41) and be electrically connected thereto. When the relay coil is energized, the grinding equipment stops. When the action component (42) moves away from the stationary component (41) and disconnects the electrical connection with the stationary component (41), the relay coil is de-energized and the grinding equipment runs.

5. The floating spindle according to claim 4, characterized in that: The stationary component (41) comprises a stationary insulating ring (411) and a stationary conductive ring (412); the moving component (42) comprises a moving insulating ring (421) and a moving conductive ring (422); the stationary insulating ring (411) is coaxially fixedly mounted on the mounting mechanism (1); the stationary conductive ring (412) is coaxially fixedly mounted on a side of the stationary insulating ring (411) close to the gap; and the side of the stationary conductive ring (412) close to the gap is flush with a side of the mounting mechanism (1) close to the gap. The action insulating ring (421) is coaxially fixedly mounted on the mounting seat (21), the action conductive ring (422) is coaxially mounted on a side of the action insulating ring (421) close to the gap, and a side of the action conductive ring (422) close to the mounting mechanism (1) extends into the gap, the action conductive ring (422) and the stationary conductive ring (412) are respectively electrically connected to the controller, and two ends of the relay coil are respectively connected to the action conductive ring (422) and the stationary conductive ring (412).

6. The floating spindle according to claim 5, characterized in that: The action assembly (42) further comprises a plurality of screws (423); the action insulating ring (421) and the action conductive ring (422) are respectively provided with a plurality of screw holes corresponding to the plurality of screws (423); the plurality of screw holes are evenly spaced along the circumference of the mounting seat (21); the screw holes on the action insulating ring (421) and the action conductive ring (422) correspond to each other; the ends of the plurality of screws (423) away from their heads are respectively screwed into the corresponding screw holes on the corresponding action insulating ring (421) and the corresponding action conductive ring (422) in sequence.

7. The floating spindle according to claim 6, characterized in that: The action component (42) further comprises a plurality of compression springs (424), wherein the plurality of compression springs (424) correspond to the plurality of screws (423) one by one, and the plurality of compression springs (424) are respectively sleeved on the corresponding screws (423) and located between the action insulating ring (421) and the action conductive ring (422), and the two ends of each compression spring (424) respectively abut against the side of the action insulating ring (421) and the action conductive ring (422) that are close to each other.

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