Rotary supporting device for bearing surface vacuum coating for high-speed motorized spindle

Abstract

The invention relates to the technical field of supporting structures, in particular to a rotary supporting device for vacuum coating of a bearing surface for a high-speed motorized spindle, which comprises a spindle, a base body mounted on the spindle and a power unit mounted on the base body and providing power for rotation of the bearing. The axis of the main shaft coincides with the center of the bearing, the base body is provided with a supporting set or two supporting sets which are oppositely arranged, and the supporting sets are used for clamping the bearing. The bearing is subjected to turnover revolution motion and autorotation motion, so that different positions on the bearing can face coating particles at any angle, the coating particles are uniformly and comprehensively attached to the bearing, full-automatic and continuous coating operation on the bearing is realized, time loss caused by frequent adjustment of the bearing angle is avoided, the coating mode is simplified, and the coating efficiency is improved. The working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of support structures, and particularly to a rotary support device for vacuum coating the surface of a bearing used in a high-speed electric spindle. Background Art

[0002] As a core driving component in modern high-precision numerical control machine tools, aerospace equipment, semiconductor processing equipment, new energy vehicle manufacturing and other fields, the performance of a high-speed electric spindle directly determines the processing efficiency, accuracy and equipment reliability. With the rapid development of intelligent manufacturing and ultra-precision processing technologies, the electric spindle is evolving towards higher speeds, greater power and longer life. Under this trend, as the core load-bearing component of the electric spindle, the bearing faces severe challenges such as friction and wear, temperature rise and deformation, and lubrication failure under extreme working conditions.

[0003] Traditional bearings are prone to problems such as fatigue spalling, fretting wear and lubricating film rupture under working conditions such as high speed, heavy load and frequent start-stop, resulting in deteriorated accuracy and shortened life. Surface coating technology can significantly improve the surface hardness of the bearing, reduce the friction coefficient and enhance the corrosion resistance by depositing nano-scale functional coatings such as diamond-like carbon DLC, titanium nitride TiN, tungsten carbide WC, etc., becoming an important way to break through the performance bottleneck of the bearing. However, existing vacuum coating equipment is mostly designed for static or simple rotating components. When coating a bearing, the coating particles can only adhere to the exposed part of the bearing. For positions such as the inner ring of the bearing, rolling elements, inner grooves where the rolling elements are located, or the shielding positions when the bearing is fixed, the bearing placement angle needs to be adjusted repeatedly many times to enable the coating particles to fully adhere to all positions of the bearing. Its operation method is cumbersome, the coating process time is long, and the work efficiency is low. Summary of the Invention

[0004] The present invention provides a rotary support device for vacuum coating the surface of a bearing used in a high-speed electric spindle, which can effectively solve the problems in the background art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A rotary support device for vacuum coating the surface of a bearing used in a high-speed electric spindle, comprising a main shaft, a base installed on the main shaft, and a power group installed on the base and providing power for the self-rotation of the bearing. The axis of the main shaft is coplanar with the bearing, and the axis of the main shaft coincides with the center of the bearing. One support group or two support groups are oppositely arranged on the base, and the support group is used for clamping the bearing; The power group includes a rotatable rotating ring and two arc-shaped pipe bodies located on both sides of the rotating ring. The rotating ring and the two arc-shaped pipe bodies form an arc-shaped channel, and a plurality of blades for generating air flow are arranged in the rotating ring.

[0006] In some embodiments of the present invention, the rotating ring rotates intermittently or continuously, and the rotation direction of the rotating ring can be adjusted.

[0007] In some embodiments of the present invention, the end of the arc-shaped tube body away from the rotating ring is provided in a flat shape.

[0008] In some embodiments of the present invention, the support group includes a number of side struts for extruding the bearing.

[0009] In some embodiments of the present invention, the distance between several of the side struts can be adjusted.

[0010] In some embodiments of the present invention, the number of the support groups is set to two, and a chuck for cooperating with the end face of the bearing is provided on each of the side struts.

[0011] In some embodiments of the present invention, the number of the side struts in the support group is set to three; The support group further includes a secondary shaft and auxiliary shafts installed at the ends of each of the side struts, and the three auxiliary shafts and the secondary shaft are distributed in a quadrilateral shape, and are connected by connecting beams between adjacent two of the auxiliary shafts and between the secondary shaft and the auxiliary shafts; Wherein, the distance between the secondary shaft and the auxiliary shaft opposite thereto can be adjusted.

[0012] In some embodiments of the present invention, transmission wheels are provided on the secondary shaft and each of the side struts, and the four transmission wheels are driven by a synchronous belt.

[0013] In some embodiments of the present invention, the support group further includes a moving sleeve and a cross beam slidably inserted on the moving sleeve, the moving sleeve is connected to the secondary shaft, one end of the auxiliary shaft opposite to the secondary shaft is connected to the cross beam, and the other end of the cross beam is connected to the moving sleeve through a pushing unit; Wherein, the position of the cross beam on the base body can be adjusted.

[0014] In some embodiments of the present invention, an adjusting structure for adjusting the position of the cross beam is rotatably provided on the base body, the adjusting structure includes an adjusting screw sleeve rotatably provided on the base body and a threaded column passing through the adjusting screw sleeve and threadedly connected to the adjusting screw sleeve, and a pushing and pulling arm consistent with the number of the support groups is eccentrically provided on the end face of the adjusting screw sleeve, and the pushing and pulling arm connects the adjusting screw sleeve and the cross beam; A sliding column is slidably inserted in the middle of the main shaft, and the end of the sliding column is connected to the end of the threaded column.

[0015] Through the technical solution of the present invention, the following technical effects can be achieved: By making the bearing perform a tumbling revolution and rotation, different positions on the bearing can face the coating particles at any angle, enabling the coating particles to adhere to the bearing evenly and comprehensively, realizing the full-automatic and continuous coating operation of the bearing, avoiding the time loss of frequently adjusting the bearing angle, simplifying the coating method, and improving work efficiency. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is Figure 1 an explosion structural schematic diagram; Figure 3 is a structural schematic diagram of the support group in an embodiment of the present invention; Figure 4 is Figure 3 a structural schematic diagram from another perspective; Figure 5 is a structural schematic diagram of the power group in an embodiment of the present invention; Figure 6 is a cross-sectional structural schematic diagram of the rotating ring in an embodiment of the present invention; Figure 7 is a cross-sectional structural schematic diagram of the base body in an embodiment of the present invention; Figure 8 is a schematic diagram of two relatively arranged rotating support devices in an embodiment of the present invention.

[0018] Reference Signs: 100, main shaft; 200, base body; 201, adjusting sleeve; 202, push-pull arm; 203, threaded column; 204, sliding column; 300, support group; 301, side support pillar; 302, chuck; 303, auxiliary shaft; 304, sub-shaft; 305, connecting beam; 306, transmission wheel; 307, synchronous belt; 308, moving sleeve; 309, cross beam; 310, pushing unit; 400, power group; 401, rotating ring; 402, arc-shaped pipe body; 403, air outlet; 404, blade; 405, motor; 406, transmission wheel; 407, side support plate. Detailed Embodiments

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description 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 of the related listed items.

[0021] As Figures 1 to 6 shown, the rotary support device with a vacuum coating on the bearing surface for a high-speed electric spindle of the present invention includes a main shaft 100, a base body 200 mounted on the main shaft 100, and a power group 400 mounted on the base body 200 and providing power for the self-rotation of the bearing. The axis of the main shaft 100 is coplanar with the bearing, and the axis of the main shaft 100 coincides with the center of the bearing. One support group 300 is provided on the base body 200 or two support groups 300 are provided oppositely. The support group 300 is used to clamp the bearing; The power group 400 includes a rotatable rotating ring 401 and two arc-shaped pipe bodies 402 located on both sides of the rotating ring 401. The rotating ring 401 and the two arc-shaped pipe bodies 402 form an arc-shaped channel, and several blades 404 for generating air flow are arranged inside the rotating ring 401; In the present invention, the main shaft 100 mainly provides power for the revolution of the bearing. The power source of the main shaft 100 can be an external motor. The revolution referred to here is the rotational movement of the bearing with any straight line passing through the center point of the bearing on its plane as the rotation axis. Therefore, the revolution direction of the bearing can be any direction, and the revolution axis coincides with the axis of the main shaft 100. Therefore, the direction of the main shaft 100 can be set arbitrarily. As Figure 1 shown in, the axis of the main shaft 100 is horizontal, and at this time, the revolution direction of the bearing is on the vertical plane; the revolution of the bearing is mainly to provide the display angles of different directions and positions for the bearing, so as to facilitate the coating particles to enter between the inner and outer rings of the bearing and coat the rolling elements and the inner grooves where the rolling elements are located; the base body 200 is mainly used to provide a support position for the support group 300 and the power group 400; one or two support groups 300 can be provided. When one support group 300 is provided, it allows the fixation of the single-side end face of the bearing. When two support groups 300 are provided, they can fix the two end faces of the bearing, thereby realizing the fixation of the bearing. Of course, the two support groups 300 can also cooperate with each other to squeeze and fix the bearing. Thus, the bearing can be fixed separately by the support group 300, and can also be fixed by the cooperation of the two support groups 300, and its fixing methods are diverse; in some embodiments, the rotary support device can also be set into two opposite groups, such asFigure 8 As shown, they act on the left and right sides of the bearing respectively, so that the movement of the bearing will be more stable; The power group 400 is used to provide power for the rotation of the bearing. The rotating ring 401 and the two arc-shaped pipe bodies 402 in the power group 400 can form an arc-shaped channel. The air outlet 403 of the arc is close to the bearing. The two ends of the channel are close to each other and both are close to the bearing. In this way, when the rotating ring 401 rotates, the rotating ring 401 will cause air flow inside the arc-shaped channel through several blades 404 inside it. The air flow will flow along the arc-shaped channel. The air flow is discharged from one end of the arc-shaped channel, and the air flow acts on the bearing and blows the bearing to rotate. The other end of the arc-shaped channel can suck the gas into the channel. Since the two ends of the channel are close, a circulating cyclone can be formed by the air flow in the channel and at the position of the air outlet 403. By using the continuous rotation of the rotating ring 401, the cyclone can continuously act on the local position of the bearing at the position of the air outlet 403, thereby providing power for the rotation of the bearing; This pneumatic method can avoid the random flow of gas and avoid the influence of the air flow on the movement of the coating particles, so as to prevent the coating thickness from being inconsistent. Especially in high-directionality coating processes such as electron beam, it can also meet the use requirements. At the same time, it can keep the air pressure around the coating within the specified range and avoid air pressure fluctuations. Moreover, this method does not need to introduce gas into the surrounding environment of the coating. In low-pressure coating or ultra-low-pressure coating operations, the pressure can be kept constant; In some embodiments, the power group 400 can also adopt the air pump suction and supply method, or adopt the mechanical friction transmission method; During use, place the bearing on the support group 300 and use the support group 300 to support the bearing. The rotating ring 401 in the power group 400 rotates and drives several blades 404 inside it to rotate, so as to generate air flow in the arc-shaped channel formed by the rotating ring 401 and the two arc-shaped pipe bodies 402. The air flow is discharged from one end of the arc-shaped channel and acts on the bearing. By using the friction between the air flow and the bearing, the bearing rotates automatically. Then the air flow can enter the arc-shaped channel again through the other end of the arc-shaped channel, thereby realizing the self-rotation effect of the bearing. When the bearing rotates, any position on it can move to the path of the movement of the coating particles, so that the coating particles adhere to the bearing. Then rotate the main shaft 100, and the bearing makes a revolution movement. In this way, different surfaces of the bearing can be exposed on the path of the movement of the coating particles, so as to achieve the full-surface coating effect of the bearing without frequently adjusting the position of the bearing; It should be noted that each arc-shaped pipe body 402 is fixedly connected to the base body 200 through a side support plate 407. A motor 405 is arranged on one side support plate 407, and a transmission wheel 406 is arranged at the output end of the motor 405. The transmission wheel 406 is in transmission connection with the rotating ring 401, thereby achieving the purpose of providing power for the rotating ring 401; By making the bearing perform a flipping revolution motion and a self-rotation motion, different positions on the bearing can face the coating particles at any angle, enabling the coating particles to adhere to the bearing evenly and comprehensively, achieving a full-automatic and continuous coating operation for the bearing, avoiding the time loss of frequently adjusting the bearing angle, simplifying the coating method, and improving work efficiency.

[0022] When the bearing is being coated, the rotating ring 401 can adopt different operating modes to provide power for the rotation of the bearing. Specifically, the rotating ring 401 rotates intermittently or continuously, and the rotation direction of the rotating ring 401 can be adjusted and set; When the rotating ring 401 adopts the continuous rotation mode, it can continuously generate air flow and blow the bearing to rotate. At this time, the bearing rotates without interruption and its rotational speed fluctuates little, which is suitable for scenarios with extremely high requirements for coating uniformity. Moreover, its control method is simple, reducing start-stop shocks. However, the disadvantage of this method is that the air flow interference is large, which is likely to cause plasma instability. It is mainly suitable for low-pressure processes, short-term coating, and high-speed coating; When the rotating ring 401 adopts the intermittent rotation mode, it can drive the bearing to rotate intermittently or make the bearing rotate in a fast-slow cycle change mode. This operating mode can make the vacuum compatibility of the coating work better, reduce air flow interference, and save energy and reduce consumption. However, its disadvantages are poor rotational speed stability and complex control. It is necessary to accurately match the blowing cycle and the bearing inertia, otherwise, it is easy to stop rotating or overshoot. It is mainly applicable to high-vacuum processes, low-speed coating, and cost-sensitive production; Adjusting the rotation direction of the rotating ring 401 can change the air flow direction, thereby changing the self-rotation direction of the bearing, so that the bearing can be coated by adopting different operating modes.

[0023] When the air flow enters and exits through the end openings of the two arc-shaped tubes 402, in order to converge the air flow so that it can have a more effective blowing effect on the bearing, the ports of the arc-shaped tubes 402 can be converged. And in order to increase the contact area between the air flow and the bearing and improve the effectiveness of the air flow blowing the bearing to rotate, the end of the arc-shaped tube 402 away from the rotating ring 401 can be set to be flat, such as Figure 5 shown, the length direction of the flat opening of the arc-shaped tube 402 is parallel to the width direction of the bearing, so that the discharged air flow can contact the bearing over a larger area in the width direction of the bearing, thereby improving the effectiveness of pneumatic transmission and reducing the energy loss of ineffective air flow.

[0024] Since the bearing needs to be able to rotate self when it is fixed by the support group 300, the structure used to clamp the bearing in the support group 300 needs to be limited. Specifically, such as Figure 3As shown in the figure, the support group 300 includes several side struts 301 for extruding the bearing; several side struts 301 can contact the bearing, and the bearing can drive the side struts 301 to rotate when rotating; the specific fixing method of several side struts 301 can be that several side struts 301 are all located on the outer ring of the bearing, and the bearing is extruded and fixed by the way of approaching each other, or several side struts 301 are all located on the inner ring of the bearing, and the bearing is externally supported and fixed by the way of moving away from each other, or several side struts 301 can fix the inner and outer rings of the bearing at the same time, or several side struts 301 are located on the same side of the bearing, and some side struts 301 are located on the inner ring of the bearing, and some side struts 301 are located on the outer ring of the bearing, so that the side struts 301 on the inner and outer rings squeeze each other to realize the fixation of the bearing. The specific fixing method can be determined according to the actual situation, and on the premise that the side struts 301 will not block or interfere with the coating work, the specific distribution form of the side struts 301 is not limited, and they are all within the protection scope of this case.

[0025] Since the models and installation positions of the bearings in the motorized spindle are different, in order to enable the support group 300 to support bearings of different models, the distance between several side struts 301 can be adjusted; by using this adjustable distance method, the disassembly and assembly work of the bearing can also be facilitated; the specific adjustable method is that the distance between each side strut 301 can be adjusted, or the positions of multiple side struts 301 on one side of the bearing can be adjusted, while the positions of multiple side struts 301 on the other side are fixed; the adjustment power of the side struts 301 can be provided by power sources such as cylinders and oil cylinders.

[0026] When the support group 300 supports the bearing, the side struts 301 on the support group 300 can contact the end face of the bearing or the side wall of the bearing. No matter which contact method it is, it can only restrict the bearing in one direction. For example, when the side strut 301 contacts the end face of the bearing, on the plane where the bearing is located, the bearing is not effectively restricted, and when the side strut 301 contacts the side wall of the bearing, for the width direction of the bearing, it is not effectively restricted. To improve the fixing effect of the support group 300 on the bearing, it is necessary to improve the support method of the support group 300, so as to Figure 1 and Figure 3 Taking... as an example, the number of the support groups 300 is set to two groups, and a chuck 302 for cooperating with the end face of the bearing is arranged on each side strut 301; the side wall of the side strut 301 contacts the side wall of the bearing. In the width direction of the bearing, through the relative extrusion of the two support groups 300 and the extrusion of the chuck 302 on each side strut 301 against the end face of the bearing, the fixing work in the width direction of the bearing can be realized, so that the bearing can be restricted in any direction, and this restriction does not affect the self-rotation of the bearing.

[0027] To optimize the clamping method of the support group 300, reduce its structural complexity, and use the least number of side struts 301 to support the bearing to reduce costs, the following method can be adopted Figure 4 As shown, the number of side struts 301 in the support group 300 is set to three; The support group 300 further includes a secondary shaft 304 and auxiliary shafts 303 installed at the ends of the respective side struts 301. The three auxiliary shafts 303 and the secondary shaft 304 are distributed in a quadrilateral shape, and are connected by connecting beams 305 between adjacent two auxiliary shafts 303 and between the secondary shaft 304 and the auxiliary shafts 303; Among them, the distance between the secondary shaft 304 and the auxiliary shaft 303 opposite thereto is adjustable; The distribution method of the three side struts 301 can be one on the inner side of the bearing and two on the outer side of the bearing, or two on the inner side of the bearing and one on the outer side of the bearing. In this way, using the three-point clamping method, the bearing can be stably supported; in some embodiments, the three side struts 301 can also be all located on the outer side or the inner side of the bearing to achieve different support effects; taking Figure 4 as an example, one of the three side struts 301 is located on the inner side of the bearing and two are located on the outer side of the bearing. In this way, when combined with the secondary shaft 304, a quadrilateral can be formed. When the two opposite endpoints of the quadrilateral approach or move away from each other, the overall shape of the quadrilateral will change. In this case, when the distance between the secondary shaft 304 and the auxiliary shaft 303 opposite thereto changes, the remaining two auxiliary shafts 303 and the side struts 301 thereon will generate displacement, that is, the vertical distance between the connection lines of the auxiliary shaft 303 opposite to the secondary shaft 304 and the remaining two auxiliary shafts 303 changes. When the bearing is within the range where the vertical distance is located, the change in the vertical distance will achieve the clamping and fixing work of the three side struts 301 on the bearing, and its control method can be achieved only by moving the secondary shaft 304. Therefore, in terms of structure and control method, it is simpler. The setting of the four connecting beams 305 is mainly used to support the auxiliary shafts 303 and the secondary shaft 304 to form the quadrilateral.

[0028] When the power group 400 provides the self-rotation power for the bearing, if the power group 400 provides power to both the inner and outer rings of the bearing at the same time, then the rolling elements between the inner and outer rings cannot generate rolling motion, and they can only be stationary relative to the inner and outer rings. Therefore, the coating particles cannot fully coat the rolling elements and their shielded positions. When the power group 400 only provides power to the inner ring or the outer ring of the bearing, it cannot ensure completely simultaneous relative motion. Therefore, to improve the motion form of the bearing, make the inner and outer rings of the bearing move relative to each other, and the rolling elements in the bearing can roll, the following method can be adopted Figure 4In the manner shown, drive wheels 306 are provided on the secondary shaft 304 and on each side support column 301, and the four drive wheels 306 are driven by a timing belt 307; on the basis of the quadrilateral, when the power unit 400 acts on the outer ring of the bearing, the side support column 301 on the outer ring of the bearing will rotate. At this time, the side support column 301 can drive the remaining two side support columns 301 to rotate through the drive wheels 306 and the timing belt 307, and the side support column 301 in contact with the inner ring of the bearing will rotate, thereby driving the inner ring of the bearing to rotate. At this time, the inner and outer rings of the bearing perform synchronous relative movement; conversely, if the power unit 400 acts on the inner ring of the bearing, the outer ring of the bearing will rotate synchronously relatively. Since the drive wheels 306 and the timing belt 307 achieve transmission on the basis of the quadrilateral, the deformation of the quadrilateral, that is, the extrusion or loosening of the bearing by the support group 300, will not change the total length of the quadrilateral. Therefore, the timing belt 307 can maintain a transmission state with each drive wheel 306 at any deformed position.

[0029] On the basis of the above embodiments, as Figure 4 shown, the support group 300 further includes a moving sleeve 308 and a cross beam 309 slidably inserted on the moving sleeve 308. The moving sleeve 308 is connected to the secondary shaft 304, one end of the auxiliary shaft 303 opposite to the secondary shaft 304 is connected to the cross beam 309, and the other end of the cross beam 309 is connected to the moving sleeve 308 through a pushing unit 310; the pushing unit 310 is a structure such as a cylinder, an oil cylinder, a propulsion motor, etc. Among them, the position of the cross beam 309 on the base body 200 is adjustable. The moving sleeve 308 and the cross beam 309 can support each structure on the support group 300. In this way, when the cross beam 309 moves on the base body 200, the two support groups 300 can be moved closer to or away from each other; based on the cross beam 309, when it is necessary to control the support group 300 to clamp or loosen the bearing, the pushing unit 310 performs a telescopic movement, which can push the moving sleeve 308 to move on the cross beam 309, thereby changing the distance between the secondary shaft 304 and the side support column 301 opposite thereto, causing the quadrilateral to deform; the movement of the cross beam 309 can be powered by a pushing structure such as a cylinder or an oil cylinder.

[0030] Further, as Figure 7 shown, an adjusting structure for adjusting the position of the cross beam 309 is rotatably provided on the base body 200. The adjusting structure includes an adjusting screw sleeve 201 rotatably provided on the base body 200 and a threaded column 203 passing through the adjusting screw sleeve 201 and threadedly connected to the adjusting screw sleeve 201. The end face of the adjusting screw sleeve 201 is eccentrically provided with a pushing and pulling arm 202 having the same number as the support group 300, and the pushing and pulling arm 202 connects the adjusting screw sleeve 201 and the cross beam 309. A sliding post 204 is inserted through the middle of the main shaft 100, and the end of the sliding post 204 is connected to the end of the threaded post 203; When the sliding post 204 moves, it can push the threaded post 203 to move. Since the threaded post 203 is threadedly connected to the adjusting sleeve 201, the threaded post 203 will push the adjusting sleeve 201 to rotate. The adjusting sleeve 201 can synchronously pull two cross beams 309 closer to or away from each other through two eccentric push-pull arms 202 thereon, thereby controlling the movement of two support groups 300; the base body 200 can provide support for the adjusting sleeve 201. Specifically, a rotating body structure such as a copper ring or a small bearing can be sleeved on the outer wall of the adjusting sleeve 201, and then the rotating body structure can be fixed on the base body 200; when the main shaft 100 rotates, the sliding post 204 will rotate synchronously, and the moving power of the sliding post 204 can be provided by a pushing structure such as a cylinder or an oil cylinder; in some embodiments, the sliding post 204 can also be rotatably connected to the threaded post 203, and a locking structure is provided therebetween. When the position of the support group 300 needs to be adjusted, the locking structure locks the sliding post 204 and the threaded post 203. At this time, the movement of the sliding post 204 will push the adjusting sleeve 201 to rotate. When the base body 200 rotates, the locking structure is unlocked. At this time, the sliding post 204 is rotatably connected to the threaded post 203, and the main shaft 100 can drive the adjusting sleeve 201 and the threaded post 203 to rotate synchronously. The positions of the adjusting sleeve 201 and the threaded post 203 are relatively stationary, and the sliding post 204 can remain stationary without following the main shaft 100 to rotate.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotating support device for vacuum coating on the surface of a bearing for a high-speed electric spindle, characterized in that, It includes a main shaft, a base mounted on the main shaft, and a power group mounted on the base and providing power for the rotation of the bearing. The axis of the main shaft is coplanar with the bearing, and the axis of the main shaft coincides with the center of the bearing. One support group or two support groups are arranged oppositely on the base, and the support group is used for clamping the bearing; The power group includes a rotatable rotating ring and two arc-shaped pipe bodies located on both sides of the rotating ring. The rotating ring and the two arc-shaped pipe bodies form an arc-shaped channel, and several blades for generating air flow are arranged in the rotating ring.

2. The rotary support device for the bearing surface vacuum coating of a high-speed electric spindle according to claim 1, characterized in that, The rotating ring rotates intermittently or continuously, and the rotation direction of the rotating ring can be adjusted.

3. The rotary support device for the bearing surface vacuum coating of a high-speed motorized spindle according to claim 1, characterized in that, The end of the arc-shaped pipe body away from the rotating ring is set to be flat.

4. The rotating support device for vacuum coating on the surface of the bearing for high-speed motor spindles according to claim 1, characterized in that, The support group includes several side struts for extruding the bearing.

5. The rotating support device for the bearing surface vacuum coating of a high-speed electric spindle according to claim 4, characterized in that, The distance between several side struts can be adjusted.

6. The rotating support device for vacuum coating on the bearing surface of a high-speed electric spindle according to claim 4, characterized in that, The number of the support groups is set to two, and chucks for cooperating with the end face of the bearing are arranged on each side strut.

7. The rotating support device for the bearing surface vacuum coating of a high-speed electric spindle according to claim 5, characterized in that The number of side struts in the support group is set to three; The support group further includes a secondary shaft and auxiliary shafts mounted at the ends of each side strut. The three auxiliary shafts and the secondary shaft are distributed in a quadrilateral shape, and are connected by connecting beams between adjacent two auxiliary shafts and between the secondary shaft and the auxiliary shafts; Wherein, the distance between the secondary shaft and the auxiliary shaft opposite to it can be adjusted.

8. The rotating support device for the bearing surface vacuum coating of a high-speed electric spindle according to claim 7, characterized in that, Drive wheels are arranged on the secondary shaft and each side strut, and the four drive wheels are driven by a synchronous belt.

9. The rotary support device for vacuum coating on the bearing surface of a high-speed motorized spindle according to claim 7, characterized in that, The support group further includes a moving sleeve and a cross beam slidably inserted on the moving sleeve. The moving sleeve is connected to the secondary shaft, one end of the auxiliary shaft opposite to the secondary shaft is connected to the cross beam, and the other end of the cross beam is connected to the moving sleeve through a pushing unit; Wherein, the position of the cross beam on the base can be adjusted.

10. The rotary support device for vacuum coating on the bearing surface of a high-speed electric spindle according to claim 9, characterized in that, An adjusting structure for adjusting the position of the cross beam is rotatably arranged on the base. The adjusting structure includes an adjusting screw sleeve rotatably arranged on the base and a threaded column passing through the adjusting screw sleeve and threadedly connected with the adjusting screw sleeve. Push-pull arms with the same number as the support groups are eccentrically arranged on the end face of the adjusting screw sleeve, and the push-pull arms connect the adjusting screw sleeve and the cross beam; A sliding column is slidably inserted in the middle of the main shaft, and the end of the sliding column is connected to the end of the threaded column.

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