Precise motor bearing outer ring grinding device

Abstract

The invention discloses a precision motor bearing outer ring grinding device, and relates to the technical field of bearing machining, the precision motor bearing outer ring grinding device comprises a base, the top of the base is fixedly connected with a fixing frame, and a grinding assembly is arranged in the fixing frame; through the arrangement of the first grinding wheel, the grinding wheel shaft and the second grinding wheel, when the first grinding wheel and the grinding wheel shaft rotate in the opposite directions, the outer arc face, the upper end face and the lower end face of the bearing outer ring can be ground at the same time, the bearing outer ring rotates under the friction effect during grinding, the inner arc face of the bearing outer ring is synchronously ground, and the grinding efficiency is higher; the grinding effect on the outer ring of the bearing is more uniform; through the arrangement of the grinding wheel shaft, the distance between the grinding points on the outer cambered surface of the bearing outer ring can be synchronously adjusted, and the grinding points on the outer cambered surface of the bearing outer ring can be correspondingly adjusted according to different specifications, thicknesses and sizes of the bearing outer ring.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing processing, and more specifically, to a grinding and superfinishing device for the outer ring of a precision motor bearing. Background Art

[0002] The grinding and superfinishing of bearings is a key link in the manufacturing of precision motors. Through grinding and superfinishing, defects on the surface of the workpiece can be removed, thereby significantly improving the rotational accuracy and load-bearing capacity of the bearings.

[0003] In the prior art, when grinding and superfinishing the outer ring of a bearing, since the outer ring of the bearing has multiple surfaces, it is necessary to polish the outer arc surface, inner arc surface, and upper and lower end surfaces of the outer ring of the bearing in sequence. During the process of separately polishing multiple surfaces of the outer ring of the bearing in sequence, not only is it necessary to transfer the bearing between multiple grinding devices, but also when the grinding wheels on the grinding devices are installed separately, when the specifications of the outer ring of the bearing to be ground change, it is necessary to change the specifications of the grinding wheels on the grinding devices in sequence, which is time-consuming and laborious. Moreover, after the specifications of the outer ring of the bearing change, the distance between the grinding wheels for different surfaces of the outer ring of the bearing needs to be further adjusted. In the production process of precision motors of different specifications, it is necessary to frequently change the distance between the grinding wheel grinding groups on multiple grinding devices and the specifications of the grinding wheels, which significantly affects the production efficiency of precision motors.

[0004] To solve the above problems, the inventor has proposed a grinding and superfinishing device for the outer ring of a precision motor bearing. Summary of the Invention

[0005] To solve the above technical problems, a grinding and superfinishing device for the outer ring of a precision motor bearing is provided.

[0006] To achieve the above object, the present invention can adopt the following technical solutions:

[0007] The present invention provides a grinding and superfinishing device for the outer ring of a precision motor bearing, including: a base, a fixing frame is fixedly connected to the top of the base, and a grinding and superfinishing assembly is arranged inside the fixing frame;

[0008] The grinding and superfinishing assembly includes a fixing plate fixedly connected to the top of the fixing frame, a first rotating shaft is rotatably connected to the bottom of the fixing plate, a central shaft is fixedly connected to the bottom of the first rotating shaft, a first grinding wheel is sleeved on the middle part of the central shaft, a first slider is symmetrically arranged inside the fixing frame, a second rotating shaft is rotatably connected to the bottom of each of the two first sliders, a grinding wheel shaft is fixedly connected to the bottom of each of the two second rotating shafts, and two second grinding wheels are sleeved on each of the two grinding wheel shafts.

[0009] Preferably, the outer diameter of the first grinding wheel is the same as the inner diameter of the outer ring of the bearing.

[0010] Preferably, the thickness of each of the four second grinding wheels is the same as the thickness of the outer ring of the bearing.

[0011] Preferably, a thickness adjustment component is provided inside the grinding wheel shaft. The thickness adjustment component includes sliding grooves symmetrically formed on the grinding wheel shaft. Two sliding grooves form a group, and a total of four groups are provided. Two groups of sliding grooves are symmetrically arranged on each grinding wheel shaft. Circular grooves are formed inside both grinding wheel shafts. The sliding grooves are all communicated with the circular grooves. Two bidirectional lead screws I are rotatably connected inside the two circular grooves. Two sliding plates are symmetrically threadedly connected to the two bidirectional lead screws I. Two nut seats are symmetrically and fixedly connected to both sides of each sliding plate. Two nut seats form a group, and each group of nut seats is slidably connected to the sliding groove. Threaded holes are symmetrically formed on each grinding wheel II. Rotating rods are rotatably connected to the bottoms of the two grinding wheel shafts. The tops of the two rotating rods pass through the grinding wheel shafts and are fixedly connected to the bidirectional lead screws I.

[0012] Preferably, a bolt is provided inside the threaded hole, and one end of the bolt is threadedly connected to the nut seat.

[0013] Preferably, a spacing adjustment component is provided inside the fixed frame. The spacing adjustment component includes a motor I fixedly installed on one side of the fixed frame. A bidirectional lead screw II is rotatably connected inside the fixed frame. The output shaft of the motor I passes through the fixed frame and is fixedly connected to the bidirectional lead screw II. Two slider Is are respectively threadedly connected to the two ends of the bidirectional lead screw II. A bevel gear I is fixedly connected to the surface of the end of the bidirectional lead screw II far from the motor I. A sliding lead screw is rotatably connected to the side of the fixed frame far from the motor I. A slider II is threadedly connected to the outer surface of the sliding lead screw. A bevel gear II is fixedly connected to the end of the sliding lead screw close to the bidirectional lead screw II. The bevel gear I meshes with the bevel gear II. A slide bar is fixedly connected to the side of the fixed frame close to the motor I. A slider III is slidably connected to the surface of the slide bar. A slider IV is fixedly connected between the slider II and the slider III.

[0014] Preferably, the tooth number ratio of the bevel gear I to the bevel gear II is two to one.

[0015] Preferably, a rotation component is provided inside the fixed frame. The rotation component includes a motor II fixedly installed on the top of the fixed plate. The output shaft of the motor II passes through the fixed plate and is fixedly connected to the rotating shaft I. A driving gear is fixedly connected to the surface of the rotating shaft I. A driven gear is rotatably connected to the bottom of the fixed plate. The driving gear meshes with the driven gear. A synchronous pulley I is coaxially fixedly connected to the bottom of the driven gear. Synchronous pulleys II are fixedly connected to the surfaces of the two rotating shafts II. A synchronous pulley III is rotatably connected to the bottom of the slider IV.

[0016] Preferably, a synchronous belt is commonly sleeved on the synchronous pulley I, the synchronous pulley II, and the synchronous pulley III.

[0017] Preferably, the synchronous pulley I, the synchronous pulley II, and the synchronous pulley III have the same size.

[0018] As described above, the characteristics and advantages of a precision motor bearing outer ring grinding and superfinishing device in the present invention are:

[0019] With the settings of grinding wheel 1, grinding wheel shaft and grinding wheel 2, when grinding wheel 1 and the grinding wheel shaft rotate in opposite directions, the outer arc surface and the upper and lower end faces of the outer ring of the bearing can be ground simultaneously. And during the process of grinding the outer arc surface and the upper and lower end faces of the outer ring of the bearing, the outer ring of the bearing rotates under the friction during grinding, and the inner arc surface of the outer ring of the bearing is synchronously ground. Compared with the method of grinding the inner arc surface and the outer arc surface of the outer ring of the bearing separately, the grinding and superfinishing efficiency is higher, and the grinding and superfinishing effect on the outer ring of the bearing is more uniform;

[0020] With the setting of the grinding wheel shaft, the two grinding wheel shafts can move synchronously, so that the grinding points on the outer arc surface of the outer ring of the bearing can be adjusted synchronously in terms of spacing. When the outer ring of the bearing has different thicknesses and sizes according to different specifications, the grinding points on the outer arc surface of the outer ring of the bearing can be quickly adjusted accordingly to fit the outer arc surface of the outer ring of the bearing, thereby better adapting to the outer rings of bearings with different specifications and improving the applicability;

[0021] By being able to sleeved with grinding wheels 2 of different thicknesses, the grinding wheels for grinding the upper and lower end faces of the outer ring of the bearing can be flexibly replaced and adjusted according to the different thicknesses of the outer rings of the bearings under different specifications. And the spacing of the grinding wheel 2 is adjustable, so that the spacing of the grinding points on the upper and lower end faces of the outer ring of the bearing is adjustable. Further, according to the different widths of the bearings under different specifications, the spacing of the grinding points on the upper and lower end faces is adjusted, and the grinding points always fit the upper and lower end faces of the bearing, so that the grinding effect on the upper and lower end faces of the bearing can better adapt to the outer rings of the bearings under different specifications;

[0022] With the settings of the driving gear and the driven gear, when grinding wheel 1 drives the outer ring of the bearing to rotate through friction, the grinding points on the outer arc surface and the upper and lower end faces of the outer ring of the bearing rotate in reverse. During the process of grinding the outer arc surface and the upper and lower end faces of the outer ring of the bearing, the outer ring of the bearing is driven to rotate through friction, so that its inner arc surface is synchronously ground. And after the spacing of the grinding points on the outer arc surface of the outer ring of the bearing is adjusted, the inner and outer grinding points of the outer ring of the bearing always have the same speed and opposite directions, so as to improve the uniformity of the inner and outer grinding of the outer ring of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure shown in the present invention;

[0024] Figure 2 It is a bottom three-dimensional schematic diagram of the overall structure shown in the present invention;

[0025] Figure 3 It is a three-dimensional schematic diagram of the grinding wheel shaft structure shown in the present invention;

[0026] Figure 4 Shown in the present invention Figure 3 The enlarged view at position A;

[0027] Figure 5 Schematic perspective sectional view of the internal structure of the grinding wheel shaft shown in the present invention;

[0028] Figure 6 Schematic perspective view of the structure of the two-way lead screw two and the slider one shown in the present invention;

[0029] Figure 7 Shown in the present invention Figure 6 Enlarged view at B in;

[0030] Figure 8 Schematic perspective view of the structure of the driving gear and the driven gear shown in the present invention;

[0031] Figure 9 Schematic perspective view of the structure of the driven gear and the first synchronous pulley shown in the present invention;

[0032] Figure 10 Schematic perspective view of the structure of the first synchronous pulley, the second synchronous pulley, the third synchronous pulley, etc. shown in the present invention.

[0033] Among them, the reference numerals in the present invention are: 1. Base; 2. Fixed frame;

[0034] Grinding and superfinishing assembly: 301. Fixed plate; 302. First rotating shaft; 303. Central shaft; 304. First grinding wheel; 305. First slider; 306. Second rotating shaft; 307. Grinding wheel shaft; 308. Second grinding wheel;

[0035] Thickness adjustment assembly: 401. Sliding groove; 402. Circular groove; 403. First two-way lead screw; 404. Sliding plate; 405. Nut seat; 406. Threaded hole; 407. Rotating rod;

[0036] Spacing adjustment assembly: 501. First motor; 502. Second two-way lead screw; 503. First bevel gear; 504. Sliding lead screw; 505. Second bevel gear; 506. Second slider; 507. Slide bar; 508. Third slider; 509. Fourth slider;

[0037] Rotation assembly: 601. Second motor; 602. Driving gear; 603. Driven gear; 604. First synchronous pulley; 605. Second synchronous pulley; 606. Third synchronous pulley. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] Embodiments provided by the present invention will be elaborated in detail below:

[0040] A precision motor bearing outer ring grinding and superfinishing device, as Figures 1 to 3 shown, includes: a base 1, a fixing frame 2 is fixedly connected to the top of the base 1, and a grinding and superfinishing component is arranged inside the fixing frame 2;

[0041] The grinding and superfinishing component includes a fixing plate 301 fixedly connected to the top of the fixing frame 2, a first rotating shaft 302 is rotatably connected to the bottom of the fixing plate 301, a central shaft 303 is coaxially fixedly connected to the bottom of the first rotating shaft 302, a first grinding wheel 304 is sleeved in the middle of the central shaft 303, first sliders 305 are symmetrically arranged inside the fixing frame 2, a second rotating shaft 306 is rotatably connected to the bottom of each of the two first sliders 305, a grinding wheel shaft 307 is fixedly connected to the bottom of each of the two second rotating shafts 306, two second grinding wheels 308 are sleeved on each of the two grinding wheel shafts 307, the outer diameter of the first grinding wheel 304 is the same as the inner diameter of the bearing outer ring, and the thickness of each of the four second grinding wheels 308 is the same as the thickness of the bearing outer ring;

[0042] It should be added that the first grinding wheel 304 is used to grind the inner arc surface of the bearing outer ring, the surface of the grinding wheel shaft 307 is used to grind the outer arc surface of the bearing outer ring, and the second grinding wheels 308 are used to grind the upper and lower end faces of the bearing outer ring.

[0043] Specifically, when the central shaft 303 and the grinding wheel shafts 307 rotate in different directions, the bearing outer ring sleeved on the first grinding wheel 304 rotates synchronously with the first grinding wheel 304 under the friction of the inner arc surface and the first grinding wheel 304. Subsequently, the grinding wheel shafts 307 and the second grinding wheels 308 thereon grind the outer arc surface and the upper and lower end faces of the bearing outer ring. During this process, the grinding wheel shafts 307 and the second grinding wheels 308 generate a frictional force on the bearing outer ring, causing the bearing outer ring to rotate relative to the first grinding wheel 304, so that the first grinding wheel 304 synchronously grinds the inner arc surface of the bearing outer ring, thereby achieving the effect of simultaneously grinding the outer arc surface, the inner arc surface, and the upper and lower end faces of the bearing outer ring. Compared with the method of separately grinding the inner arc surface and the outer arc surface of the bearing outer ring, the grinding and superfinishing efficiency is higher, and the grinding and superfinishing effect on the bearing outer ring is more uniform.

[0044] Furthermore, as Figures 2 to 5As shown in the figure, a thickness adjustment component is provided inside the grinding wheel shaft 307. The thickness adjustment component includes sliding grooves 401 symmetrically formed on the grinding wheel shaft 307. Two sliding grooves 401 form a group, and a total of four groups are provided. Two groups of sliding grooves 401 are symmetrically arranged on each grinding wheel shaft 307. Circular grooves 402 are formed in both grinding wheel shafts 307. The sliding grooves 401 are all communicated with the circular grooves 402. A first bidirectional lead screw 403 is rotatably connected in each of the two circular grooves 402. Two sliding plates 404 are symmetrically threadedly connected to each of the two first bidirectional lead screws 403. Two nut seats 405 are symmetrically and fixedly connected to both sides of each sliding plate 404. Two nut seats 405 form a group, and each group of nut seats 405 is slidably connected to the sliding groove 401. Threaded holes 406 are symmetrically formed on each grinding wheel 308. Rotating rods 407 are rotatably connected to the bottoms of the two grinding wheel shafts 307. The tops of the two rotating rods 407 pass through the grinding wheel shafts 307 and are fixedly connected to the first bidirectional lead screws 403. Bolts are arranged in the threaded holes 406, and one end of each bolt is threadedly connected to the nut seat 405.

[0045] It should be added that the grinding wheel 308 is installed on the sliding plate 404 through the cooperation of the bolt and the nut seat 405.

[0046] Specifically, when installing the grinding wheel 308 for grinding different bearing outer rings, first select the grinding wheel 308 with the same thickness as the bearing outer ring and the grinding wheel 1 304 with the same width as the bearing outer ring. Then, sleeved the two grinding wheels 308 for grinding the upper end face of the bearing outer ring onto the grinding wheel shafts 307, align the threaded holes 406 on the grinding wheels 308 with the upper nut seats 405, and use bolts to install the grinding wheels 308 onto the nut seats 405 and the sliding plates 404. After the installation of the grinding wheels 308 is completed, sleeve the grinding wheel 1 304 onto the central shaft 303, then sleeve the bearing outer ring onto the grinding wheel 1 304. Subsequently, sleeve the grinding wheel 308 for grinding the lower end face of the bearing outer ring onto the grinding wheel shafts 307, and fixedly connect the grinding wheel 308 with the lower sliding plate 404 and the nut seat 405 in the circular groove 402 through bolts. At this time, the operator rotates the two rotating rods 407 by hand respectively, so that the rotating rods 407 drive the first bidirectional lead screws 403 to rotate. The first bidirectional lead screws 403 drive the two sliding plates 404 thereon to slide towards the middle of the first bidirectional lead screws 403 through the double threads, so that the nut seats 405 slide towards one side close to the middle of the first bidirectional lead screws 403 in the sliding grooves 401, thereby driving the grinding wheels 308 to move towards the middle of the central shaft 303, so that the grinding wheels 308 are in contact with the upper and lower end faces of the bearing outer ring. Thus, when the grinding wheels 308 rotate, the upper and lower end faces of the bearing outer ring can be ground. By synchronously adjusting the distance between the grinding wheels 308, the grinding and superfinishing device can adapt to bearing outer rings of different sizes.

[0047] Furthermore, as Figures 1 to 3 and Figures 6 to 10As shown in the figure, a spacing adjustment component is arranged inside the fixing frame 2. The spacing adjustment component includes a motor 501 fixedly installed on one side of the fixing frame 2. A two-way lead screw 502 is rotatably connected inside the fixing frame 2. The output shaft of the motor 501 passes through the fixing frame 2 and is fixedly connected to the two-way lead screw 502. Two sliders 305 are respectively threadedly connected to the two ends of the two-way lead screw 502. A bevel gear 503 is fixedly connected to the surface of the end of the two-way lead screw 502 far from the motor 501. A sliding lead screw 504 is rotatably connected to the side of the fixing frame 2 far from the motor 501. A slider 506 is threadedly connected to the outer surface of the sliding lead screw 504. A bevel gear 505 is fixedly connected to the end of the sliding lead screw 504 close to the two-way lead screw 502. The bevel gear 503 meshes with the bevel gear 505. A slide bar 507 is fixedly connected to the side of the fixing frame 2 close to the motor 501. A slider 508 is slidably connected to the surface of the slide bar 507. A slider 509 is fixedly connected between the slider 506 and the slider 508. The tooth number ratio of the bevel gear 503 to the bevel gear 505 is two to one.

[0048] It should be added that the tooth number ratio of the bevel gear 503 to the bevel gear 505 is two to one, so that when the bevel gear 503 rotates one circle, the bevel gear 505 rotates two circles, which is the prior art and will not be elaborated here; the pitch of the two-way lead screw 502 is the same as that of the sliding lead screw 504, so that when the two-way lead screw 502 and the sliding lead screw 504 rotate at the same speed, the moving speeds of the slider 305 and the slider 506 are the same, which is the prior art and will not be elaborated here.

[0049] Specifically, when the thickness of the outer ring of the bearing to be polished is different according to different specifications, and the distance between the grinding wheel shaft 307 and the central shaft 303 needs to be adjusted, the motor 501 is started to drive the two-way lead screw 502 to rotate, so that the two-way lead screw 502 drives the two sliders 305 to approach or move away from the central shaft 303 synchronously through the thread. When the slider 305 moves, it drives the grinding wheel shaft 307 at its bottom to approach or move away from the central shaft 303 synchronously, so that the two grinding wheel shafts 307 can adapt to the outer rings of gears with different thicknesses or sizes, improving the applicability of the grinding and superfinishing device.

[0050] Further, as Figure 1 and Figure 6 、 Figures 8 to 10As shown in the figure, a rotating assembly is provided inside the fixing bracket 2. The rotating assembly includes a second motor 601 fixedly installed on the top of the fixing plate 301. The output shaft of the second motor 601 passes through the fixing plate 301 and is fixedly connected to the first rotating shaft 302. A driving gear 602 is fixedly connected to the surface of the first rotating shaft 302. The bottom of the fixing plate 301 is rotatably connected to a driven gear 603. The driving gear 602 meshes with the driven gear 603. A first synchronous pulley 604 is coaxially and fixedly connected to the bottom of the driven gear 603. A second synchronous pulley 605 is fixedly connected to the surfaces of the two second rotating shafts 306. A third synchronous pulley 606 is rotatably connected to the bottom of the fourth slider 509. A synchronous belt is sleeved on the first synchronous pulley 604, the second synchronous pulley 605 and the third synchronous pulley 606. The first synchronous pulley 604, the second synchronous pulley 605 and the third synchronous pulley 606 are of the same size.

[0051] It should be added that the first synchronous pulley 604, the second synchronous pulley 605 and the third synchronous pulley 606 are of the same size. When the distance between the second synchronous pulley 605 and the third synchronous pulley 606 changes, causing the shape of the synchronous belt to change, the rotational speeds of the second synchronous pulley 605 and the third synchronous pulley 606 driven by the synchronous belt remain unchanged. This is prior art and will not be elaborated here.

[0052] Specifically, when the second motor 601 starts to drive the first rotating shaft 302 to rotate, the first rotating shaft 302 drives the central shaft 303 at its bottom to rotate synchronously. And under the meshing action of the driving gear 602 and the driven gear 603, the rotation direction of the first synchronous pulley 604 is opposite to that of the central shaft 303. Subsequently, the first synchronous pulley 604 drives the synchronous belt to rotate and drives the second synchronous pulley 605 and the third synchronous pulley 606 to rotate, so that the rotation directions of the two second synchronous pulleys 605 are opposite to that of the first rotating shaft 302. Thus, the rotation directions of the grinding wheel shaft 307 and the second grinding wheel 308 are opposite to that of the first grinding wheel 304, and then the inner arc surface, the outer arc surface and the upper and lower end faces of the bearing outer ring are ground simultaneously. When the second bidirectional lead screw 502 drives the first slider 305 to move to adjust the distance between the grinding wheel shafts 307, the second rotating shaft 306 at the bottom of the first slider 305 moves synchronously. At this time, the first bevel gear 503 on the second bidirectional lead screw 502 drives the sliding lead screw 504 to rotate through the second bevel gear 505, so that the sliding lead screw 504 drives the second slider 506 to slide under the action of the thread. At the same time, under the sliding fit of the slide bar 507 and the third slider 508, the second slider 506 drives the fourth slider 509 to move. And under the action of the tooth number ratio of the first bevel gear 503 and the second bevel gear 505 being 2:1, when the two first sliders 305 approach the middle of the second bidirectional lead screw 502 synchronously under the action of the second bidirectional lead screw 502, the second slider 506 drives the fourth slider 509 to slide away from the second bidirectional lead screw 502, and the sliding distance is the sum of the sliding distances of the two first sliders 305. When the two first sliders 305 move away from the middle of the second bidirectional lead screw 502 synchronously under the action of the second bidirectional lead screw 502, the fourth slider 509 slides towards the second bidirectional lead screw 502, and the sliding distance is also the sum of the sliding distances of the two first sliders 305. Thus, when the first slider 305 drives the grinding wheel shaft 307 to adjust the distance, the third synchronous pulley 606 moves synchronously according to the moving distances of the two second synchronous pulleys 605, so as to always keep the synchronous belt in a taut state, and further ensure that the second synchronous pulley 605 can always rotate synchronously when the first synchronous pulley 604 drives the synchronous belt to rotate.

[0053] The above are only embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precision motor bearing outer ring grinding device, characterized in that: include: A base (1), the top of the base (1) is fixedly connected to a fixing frame (2), and a grinding super assembly is arranged inside the fixing frame (2); The grinding component comprises a fixing plate (301) fixedly connected to the top of a fixing frame (2); the bottom of the fixing plate (301) is rotatably connected to a rotating shaft (302); the bottom of the rotating shaft (302) is fixedly connected to a central shaft (303); a grinding wheel (304) is sleeved on the middle of the central shaft (303); sliding blocks (305) are symmetrically arranged inside the fixing frame (2); the bottoms of two sliding blocks (305) are both rotatably connected to a rotating shaft (306); the bottoms of the two rotating shafts (306) are both fixedly connected to a grinding wheel shaft (307); and two grinding wheels (308) are sleeved on the two grinding wheel shafts (307).

2. The precision motor bearing outer ring grinding device according to claim 1, characterized in that: The outer diameter of the grinding wheel 1 (304) is the same as the inner diameter of the outer ring of the bearing.

3. The precision motor bearing outer ring grinding device according to claim 2, characterized in that: The thickness of the four grinding wheels 2 (308) is the same as the thickness of the outer ring of the bearing.

4. The precision motor bearing outer ring grinding device according to claim 1, characterized in that: A thickness adjustment component is arranged in the grinding wheel shaft (307), and the thickness adjustment component includes sliding grooves (401) symmetrically arranged on the grinding wheel shaft (307). Two sliding grooves (401) form a group, and a total of four groups are arranged. Two groups of sliding grooves (401) are symmetrically arranged on each grinding wheel shaft (307). A circular groove (402) is arranged in both grinding wheel shafts (307). The sliding grooves (401) are connected to the circular grooves (402). A bidirectional screw rod (403) is rotatably connected in both circular grooves (402). The two bidirectional screw rods (403) are rotatably connected to each other. ) are symmetrically threadedly connected with sliding plates (404), and nut seats (405) are symmetrically fixedly connected on both sides of each sliding plate (404), two nut seats (405) form a group, and each group of nut seats (405) is slidably connected to the sliding groove (401), and screw holes (406) are symmetrically opened on each grinding wheel second (308), and the bottoms of the two grinding wheel shafts (307) are rotatably connected with rotating rods (407), and the tops of the two rotating rods (407) pass through the grinding wheel shaft (307) and are fixedly connected to the bidirectional screw rod one (403).

5. The precision motor bearing outer ring grinding device according to claim 4, characterized in that: A bolt is arranged in the screw hole (406), and one end of the bolt is threadedly connected to the nut seat (405).

6. The precision motor bearing outer ring grinding device according to claim 1, characterized in that The interior of the fixed frame (2) is provided with a spacing adjustment component, the spacing adjustment component includes a motor 1 (501) fixedly mounted on one side of the fixed frame (2), the interior of the fixed frame (2) is rotatably connected with a bidirectional screw rod 2 (502), the output shaft of the motor 1 (501) passes through the fixed frame (2) and is fixedly connected with the bidirectional screw rod 2 (502), two sliders 1 (305) are respectively threadedly connected with the two ends of the bidirectional screw rod 2 (502), the end surface of the bidirectional screw rod 2 (502) away from the motor 1 (501) is fixedly connected with a bevel gear 1 (503), the interior of the fixed frame (2) away from the motor 1 (5 01) is rotatably connected to one side of the sliding screw (504), the outer surface of the sliding screw (504) is threadedly connected to a slider 2 (506), the end of the sliding screw (504) close to the bidirectional screw 2 (502) is fixedly connected to a bevel gear 2 (505), the bevel gear 1 (503) is meshed with the bevel gear 2 (505), the inner side of the fixed frame (2) close to the motor 1 (501) is fixedly connected to a sliding rod (507), the surface of the sliding rod (507) is slidably connected to a slider 3 (508), and a slider 4 (509) is fixedly connected between the slider 2 (506) and the slider 3 (508).

7. The precision motor bearing outer ring grinding device according to claim 6 is characterized in that , the gear ratio of bevel gear one (503) to bevel gear two (505) is two to one.

8. The device for grinding and super-grinding outer ring of precision motor bearing according to claim 7, characterized in that A rotating assembly is arranged inside the fixed frame (2), and the rotating assembly includes a motor 2 (601) fixedly mounted on the top of the fixed plate (301), the output shaft of the motor 2 (601) passes through the fixed plate (301) and is fixedly connected to the rotating shaft 1 (302), the surface of the rotating shaft 1 (302) is fixedly connected to a driving gear (602), the bottom of the fixed plate (301) is rotatably connected to a driven gear (603), the driving gear (602) is meshed with the driven gear (603), the bottom of the driven gear (603) is coaxially fixedly connected to a synchronous wheel 1 (604), the surfaces of the two rotating shafts 2 (306) are fixedly connected to synchronous wheels 2 (605), and the bottom of the slider 4 (509) is rotatably connected to a synchronous wheel 3 (606).

9. The precision motor bearing outer ring grinding device according to claim 8, characterized in that A synchronous belt is commonly mounted on the synchronous wheel 1 (604), the synchronous wheel 2 (605) and the synchronous wheel 3 (606).

10. The precision motor bearing outer ring grinding device according to claim 9, characterized in that , the sizes of synchronous wheel one (604), synchronous wheel two (605) and synchronous wheel three (606) are the same.

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