A bearing ring polishing device

Abstract

The application relates to the technical field of bearing machining equipment, improves the problem that workpieces are prone to jumping during centerless grinding, and discloses a bearing ring grinding device which comprises a rack, a grinding wheel arranged on the rack, a guide wheel and a cooling mechanism, a jump-preventing mechanism and a bracket for supporting a workpiece are arranged between the grinding wheel and the guide wheel; the bracket comprises a supporting plate; the jump-preventing mechanism comprises an air suction pipe, an air outlet pipe, a first fan connected with the air suction pipe and a second fan connected with the air outlet pipe, a top surface of the supporting plate is provided with an air suction groove, one end of the air suction pipe far from the first fan is communicated with the air suction groove, and an air outlet of the air outlet pipe is arranged above the rack and close to the direction in which the workpiece enters. When the bearing ring passes through the bracket, the first fan generates suction to the bearing ring in the direction close to the bracket through the air suction groove, so that the jumping of the bearing ring is reduced, the second fan separates the arranged bearings through the air outlet pipe, the mutual influence between the bearing rings is reduced, and the rotary precision of the bearing ring grinding can be improved.

Description

Technical Field

[0001] This application relates to the technical field of bearing processing equipment, and in particular to a bearing ring grinding device. Background Technology

[0002] Bearings are high-precision components that require grinding to ensure their rotational accuracy. With the continuous development of bearing processing technology, centerless grinders, which can grind without positioning the workpiece shaft, are often used for small or miniature bearing rings that are difficult to position.

[0003] Existing centerless grinders include a grinding wheel, a guide wheel, and a support between the grinding wheel and the guide wheel; the workpiece is located between the grinding wheel and the guide wheel and is supported by the support; the guide wheel drives the workpiece to rotate and guides it forward; the grinding wheel grinds the surface of the workpiece; during grinding, coolant needs to be supplied to reduce the temperature and flush away the detached abrasive grains.

[0004] In a centerless grinder, the positioning reference is the outer diameter of the workpiece itself. The center of the workpiece must be higher than the line connecting the centers of the grinding wheel and the guide wheel. Moreover, the center of the workpiece constantly changes during the grinding process, and the contact points between the workpiece and the grinding wheel and guide wheel are asymmetrical. As a result, some protrusions on the surface can gradually be rounded over multiple rotations. However, unlike cylindrical grinding which relies on a central hole for positioning, centerless grinding is prone to runout if the workpiece itself is curved, not round, or has ridges, thus affecting the quality of the workpiece. Summary of the Invention

[0005] In order to improve the defect of workpieces easily jumping during centerless grinding, this application provides a bearing ring grinding device.

[0006] This application provides a bearing ring grinding device, which adopts the following technical solution:

[0007] A bearing ring grinding device includes a frame and a grinding wheel, a guide wheel, and a cooling mechanism mounted on the frame. An anti-jump mechanism and a bracket for supporting the workpiece are provided between the grinding wheel and the guide wheel. The bracket includes a support plate. The anti-jump mechanism includes a suction pipe and a first fan connected to the suction pipe. A suction groove is formed on the top surface of the support plate. The end of the suction pipe away from the first fan is connected to the suction groove.

[0008] By adopting the above technical solution, a suction groove is opened on the support plate. When the bearing ring passes through the support, the first fan generates suction, which can attract the bearing ring towards the support, thereby reducing the possibility of the bearing ring jumping due to the large surface protrusion during grinding and improving the rotational accuracy of bearing ring grinding.

[0009] Optionally, the top of the pallet includes a connected support portion and an anti-jump portion. The support portion is close to the grinding wheel and is inclined downward from the grinding wheel direction towards the guide wheel direction. The anti-jump portion is inclined upward from the grinding wheel direction towards the guide wheel direction. The suction groove is disposed on the surface of the anti-jump portion.

[0010] By adopting the above technical solution, the support plate is tilted downwards towards the guide wheel, which allows the bearing ring to be pressed tightly against the guide wheel, so that the bearing ring can rotate and move forward under the guiding force of the guide wheel; the suction groove is set on the side close to the guide wheel, which can attract the bearing ring to reduce the runout, while also ensuring that the bearing ring is pressed tightly against the surface of the guide wheel, making the movement of the bearing ring more stable, thereby further improving the rotational accuracy of the bearing ring grinding.

[0011] Optionally, the anti-jump mechanism further includes a second fan and an air outlet pipe connected to the second fan, wherein the air outlet of the air outlet pipe is located above the frame and close to the direction in which the workpiece enters.

[0012] By adopting the above technical solution, the bearing rings are arranged in abutting position when entering the bracket during grinding. When one bearing ring jumps, it may affect the adjacent bearing rings. By blowing the bearing rings through the air outlet, an acceleration is given to the bearing rings, which can separate the bearing rings entering the bracket in sequence, so that each bearing ring does not touch the ground and is ground by the grinding wheel and guide wheel, further reducing the possibility of bearing ring jump.

[0013] Optionally, the air outlet is inclined downward along the forward direction of the workpiece, and the connection between the support and the anti-jump part is also inclined downward along the forward direction of the workpiece.

[0014] By adopting the above technical solution, the downward-sloping air outlet can better propel the bearing ring forward and push the abrasive particles and other waste chips that fall off during grinding towards the discharge port of the grinding device, reducing the possibility of waste chips gradually accumulating on the support plate and coming into contact with the bearing ring, thus reducing the impact on the grinding of the bearing ring.

[0015] Optionally, the anti-jump mechanism further includes a bracket, and the air outlet pipe passes through and is fixed on the bracket; the bracket is inclined downward from the direction of the guide wheel towards the direction of the grinding wheel, and the inclined downward edge of the bracket is located above the position of the grinding wheel near the workpiece; the cooling mechanism includes a water outlet pipe, and the water outlet end of the water outlet pipe is located above the bracket.

[0016] By adopting the above technical solution, the air outlet pipe is fixed on the bracket, which is set to be inclined towards the grinding wheel, so as to play a guiding role, directing the cooling water discharged from the water outlet pipe to the position above the grinding wheel grinding the bearing ring, thereby improving the utilization rate of cooling water, improving the cooling effect, and reducing the impact of high temperature on the grinding accuracy of the bearing ring.

[0017] Optionally, the tray has a transition cavity communicating with the suction groove, and the suction pipe is connected to the inner wall of the transition cavity; a drain hole is also provided at the bottom of the inner wall of the transition cavity, and a drain channel is also provided in the tray, with one end of the drain channel connected to the drain hole and the other end connected to the outer surface of the tray.

[0018] By adopting the above technical solution, some coolant may enter the air intake trough and flow out through the drain hole from the drain channel, which can drain the water and collect it together for subsequent reuse, thereby improving the utilization rate of waste liquid.

[0019] Optionally, the bottom wall of the transition cavity is inclined downwards towards the drain hole.

[0020] By adopting the above technical solution, the water and some of the waste debris in the transition cavity can easily flow out from the drain hole, reducing the possibility of waste liquid and waste debris accumulating in the transition cavity.

[0021] Optionally, the suction pipe includes a vertical section and a horizontal section that are connected to each other. The bottom wall of the vertical section is provided with a water outlet hole, which is connected to the drainage channel.

[0022] By adopting the above technical solution, some waste liquid may also flow into the suction pipe. By setting the suction pipe into vertical and horizontal sections, the waste liquid can flow out from the water outlet at the bottom of the vertical section due to gravity, and then flow out from the drainage channel.

[0023] Optionally, the top surface of the support is provided with a drainage groove, and the tray is provided with a drainage cavity communicating with the drainage groove, the bottom of the drainage cavity communicating with the drainage channel.

[0024] By adopting the above technical solution, the possibility of coolant accumulation on the support plate can be reduced, thereby reducing the impact on the movement of the bearing ring itself and improving grinding accuracy.

[0025] In summary, this application includes at least one of the following beneficial effects:

[0026] 1. When the bearing ring passes over the bracket, the first fan generates suction through the suction groove, which can attract the bearing ring towards the bracket, thereby reducing the possibility of the bearing ring jumping during grinding. The second fan separates the bearings arranged in the bracket through the exhaust pipe, thereby reducing the mutual influence between the bearing rings and improving the rotational accuracy of the bearing ring grinding.

[0027] 2. The inclined design of the drainage groove and the connection between the support and the anti-jump part can reduce the possibility of coolant accumulation on the support plate, thereby reducing the impact on the movement of the bearing ring itself and improving grinding accuracy.

[0028] 3. The bracket is designed to tilt towards the grinding wheel, which allows cooling water to be directed to the area above the grinding wheel bearing ring, improving the utilization rate of cooling water and enhancing the cooling effect;

[0029] 4. The tray is equipped with a drainage groove, and the waste liquid is collected together through the drainage chamber and drainage channel, which can improve the utilization rate of waste liquid and make energy saving and emission reduction more effective. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the bearing ring grinding device in operation according to an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the installation structure of the bracket and anti-jump mechanism in the embodiments of this application;

[0032] Figure 3 This is a schematic diagram of the bracket structure in an embodiment of this application;

[0033] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;

[0034] Figure 5 yes Figure 3 A sectional view along the BB direction.

[0035] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Grinding wheel; 3. Guide wheel; 4. Bracket; 41. Clamping mechanism; 5. Support plate; 51. Support part; 52. Anti-jump part; 53. Suction duct; 54. Transition cavity; 55. Drain hole; 56. Drainage channel; 57. Drainage trough; 58. Drainage cavity; 59. Filter screen; 6. Anti-jump mechanism; 61. Suction pipe; 611. Vertical section; 612. Horizontal section; 613. Water outlet; 614. Water guide plate; 62. First fan; 63. Second fan; 64. Air outlet pipe; 641. Air outlet; 65. Compressed jet valve; 66. Support; 661. Water baffle; 7. Cooling mechanism; 71. Water outlet pipe; 711. Water outlet end; 72. Water pump. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] Reference Figure 1This application discloses a bearing ring grinding device, including a frame 1 and a grinding wheel 2, a guide wheel 3, a bracket 4, an anti-jump mechanism 6, and a cooling mechanism 7 mounted on the frame 1. The grinding wheel 2 and the guide wheel 3 are mounted opposite each other on the frame 1. The structure of the grinding wheel 2 and the guide wheel 3, as well as their driving methods, are based on existing technology and will not be described in detail. The bracket 4 and the anti-jump mechanism 6 are located between the grinding wheel 2 and the guide wheel 3. The bracket 4 supports the workpiece, the anti-jump mechanism 6 reduces workpiece movement, and the cooling mechanism 7 cools the workpiece by pouring coolant into it during grinding.

[0038] Reference Figure 2 and Figure 3 The support 4 includes a support plate 5 and clamping mechanisms 41 disposed at both ends of the support plate 5 along its length. The length of the support plate 5 is consistent with the width of the grinding wheel 2 and the guide wheel 3. The clamping mechanisms 41 are used to clamp and guide the workpiece before entering the grinding wheel 2 and the guide wheel 3 and after leaving the grinding wheel 2 and the guide wheel 3. The clamping mechanisms 41 can adopt existing technology, so they will not be described in detail. The anti-jump mechanism 6 includes a suction pipe 61 and a first fan 62 connected to the suction pipe 61. A suction groove 53 is opened on the top surface of the support plate 5. The end of the suction pipe 61 away from the first fan 62 is connected to the suction groove 53. The first fan 62 is mounted on the frame 1. The first fan 62 draws air into the suction groove 53, thereby attracting the workpiece towards the support plate 5, thus reducing the possibility of the workpiece jumping. The top surface of the support plate 5 is inclined downwards from the direction of the grinding wheel 2 towards the direction of the guide wheel 3, with the inclination angle preferably between 30° and 50°. At this time, the first fan 62 can also attract the workpiece towards the direction of the guide wheel 3 through the suction groove 53, so that the workpiece is pressed against the guide wheel 3, thereby improving the transmission effect of the guide wheel 3 on the workpiece. The suction groove 53 can be configured as several circular grooves arrayed along the length of the support plate 5 or as a long strip groove along the length of the support plate 5. A filter screen 59 for blocking grinding waste is provided at the opening of the suction groove 53, and the top surface of the filter screen 59 is not higher than the top surface of the support plate 5. When the suction trough 53 is a circular trough, several suction pipes 61 can be correspondingly set, with the end of the suction pipe 61 away from the first fan 62 directly connected to the suction trough 53 on the support plate 5; when the suction trough 53 is a long strip trough, a chamber communicating with the long strip trough can be opened in the support plate 5, and one suction pipe 61 can be set, with the end of the suction pipe 61 away from the first fan 62 connected to the inner wall of the chamber. For ease of installation, this embodiment preferably sets the suction trough 53 as a long strip trough.

[0039] Reference Figure 3As a further embodiment, the top of the pallet 5 includes a connected support portion 51 and an anti-jump portion 52. The connection between the support portion 51 and the anti-jump portion 52 is inclined downward along the forward direction of the workpiece to reduce the accumulation of waste. The support portion 51 is close to the grinding wheel 2 and is inclined downward from the grinding wheel 2 towards the guide wheel 3, with the inclination angle preferably between 30° and 50°. The anti-jump portion 52 is inclined upward from the grinding wheel 2 towards the guide wheel 3. It should be noted that the support point of the pallet 5 for the workpiece is located on the support portion 51. The suction groove 53 is provided on the surface of the anti-jump portion 52. The suction groove 53 is preferably located near the top surface of the anti-jump portion 52, which can reduce the possibility of water accumulation and further attract the workpiece towards the guide wheel 3.

[0040] Reference Figure 2 As a further embodiment, the anti-jump mechanism 6 also includes a bracket 66, a second fan 63, and an air outlet pipe 64 connected to the second fan 63. The air outlet pipe 64 passes through and is fixed to the bracket 66. The air outlet 641 of the air outlet pipe 64 is located above the frame 1 and close to the direction in which the workpiece enters. A small compressed air valve 65 is provided near the air outlet 641 of the air outlet pipe 64. The air outlet 641 is designed to narrow in the opening direction, thereby increasing the pressure of the ejected gas and pushing the workpiece forward. The air outlet 641 is preferably inclined downward along the direction of the workpiece's movement, thereby providing acceleration to the workpiece entering the bracket 4, blowing the workpieces apart one by one, so that each workpiece does not touch the ground and is ground by the grinding wheel 2 and guide wheel 3, reducing the possibility of mutual interference between workpieces.

[0041] In another embodiment, the second blower 63 can be connected to multiple air outlet pipes 64, each air outlet pipe 64 is equipped with a compressed air valve 65, and the air outlet pipes 64 are arranged in an array along the length of the pallet 5. In this case, the second blower 63 can push a workpiece forward multiple times through the arranged air outlet pipes 64, reducing the possibility of workpiece blockage. In addition, it can also blow off the waste debris on the pallet 5.

[0042] Reference Figure 1 and Figure 2 The cooling mechanism 7 includes a water pump 72 and a water outlet pipe 71 connected to the water pump 72. The water outlet end 711 of the water outlet pipe 71 is located above the bracket 66, and the water outlet end 711 is preferably elongated. To improve the cooling effect, the upper surface of the bracket 66 is inclined downward from the direction of the guide wheel 3 towards the grinding wheel 2. The inclined downward edge of the bracket 66 is located above the position of the grinding wheel 2 near the workpiece, thereby guiding the cooling water discharged from the water outlet pipe 71 to the position above the grinding wheel 2 where it grinds the bearing ring. A water-blocking part 661 is provided at the end of the bracket 66 away from the grinding wheel 2, which is vertical or inclined towards the direction of the guide wheel 3.

[0043] Reference Figure 3Coolant flowing out of the outlet pipe 71 may enter the suction trough 53. To separate the coolant, the pallet 5 is provided with a transition cavity 54 communicating with the suction trough 53 and a drain channel 56 communicating with the transition cavity 54. A drain hole 55 is also provided at the bottom of the inner wall of the transition cavity 54. The transition between the inner wall of the transition cavity 54 and the drain hole 55 is set in an arc shape to facilitate the flow of coolant. The drain hole 55 is preferably set on one side of the discharge end of the pallet 5. The transition cavity 54 is set along the length of the pallet 5, and the bottom wall of the transition cavity 54 is set to slope downward towards the drain hole 55. One end of the drain channel 56 is connected to the drain hole 55, and the other end is connected to the outer surface of the pallet 5. The drain channel 56 can be connected to a water pipe to transport the waste liquid to an external water tank. The water tank is connected to a recycling mechanism to filter the waste liquid and reuse it in the grinding device. The suction pipe 61 is connected to the inner wall of the transition cavity 54. One suction pipe 61 can be provided, and it is preferably provided at the middle position in the length direction of the tray 5.

[0044] Reference Figure 4 Since some waste liquid may flow into the suction pipe 61, the suction pipe 61 is configured as a vertical section 611 and a horizontal section 612 connected together. The bottom wall of the vertical section 611 is provided with a water outlet 613, which is connected to the drainage channel 56. This allows the waste liquid to flow out from the water outlet 613 at the bottom of the vertical section 611 due to gravity, and then flow out into the water storage tank through the drainage channel 56. The end of the horizontal section 612 away from the vertical section 611 is preferably configured to be connected to the side surface of the long side of the support plate 5.

[0045] Reference Figure 5 Optionally but not limited to, the inner wall of the vertical section 611 may also be provided with several guide plates 614 inclined towards the outlet hole 613. The guide plates 614 are made of metal and are arranged in a staggered array on the opposite inner walls of the vertical section 611. They can play a guiding and buffering role, increasing the possibility of waste liquid flowing along the vertical section 611 towards the outlet hole 613.

[0046] Reference Figure 2 and Figure 4 To reduce the impact of excessive water accumulation on the surface of the pallet 5 on the movement of the workpiece, and to facilitate the recycling of waste liquid, a drainage groove 57 is provided on the top surface of the support part 51. The drainage groove 57 can be configured as several circular grooves arrayed along the length of the pallet 5 or as a long strip groove along the length of the pallet 5. A filter screen 59 for limiting the inflow of waste debris can also be provided at the opening of the drainage groove 57. A drainage cavity 58 communicating with the drainage groove 57 is provided inside the pallet 5. The bottom of the drainage cavity 58 is connected to the drainage channel 56, and the bottom wall of the drainage cavity 58 can be configured to slope downwards towards the drainage channel 56.

[0047] The implementation principle of the bearing ring grinding device in this application embodiment is as follows:

[0048] As the bearing rings pass over the bracket 4, the first fan 62 generates suction through the suction groove 53, drawing the bearing rings closer to the bracket 4. This reduces the possibility of the bearing rings jumping during grinding. The second fan 63 separates the bearings arranged within the bracket 4 through the exhaust pipe 64, reducing mutual interference between the bearing rings and improving the rotational accuracy of the bearing ring grinding. Furthermore, water on the support plate 5 can flow into the drainage channel 56 through the drainage groove 57 and drainage chamber 58, as well as the suction groove 53 and transition chamber 54. This reduces the impact of accumulated water on the movement of the bearing rings, improves the utilization rate of waste liquid, and achieves greater energy conservation and emission reduction.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bearing ring grinding device, comprising a frame (1) and a grinding wheel (2), a guide wheel (3), and a cooling mechanism (7) disposed on the frame (1), characterized in that: An anti-jump mechanism (6) and a bracket (4) for supporting the workpiece are provided between the grinding wheel (2) and the guide wheel (3); the bracket (4) includes a support plate (5), the anti-jump mechanism (6) includes a suction pipe (61) and a first fan (62) connected to the suction pipe (61), the top surface of the support plate (5) is provided with a suction groove (53), and the end of the suction pipe (61) away from the first fan (62) is connected to the suction groove (53); The top of the pallet (5) includes a connected support part (51) and an anti-jump part (52). The support part (51) is close to the grinding wheel (2) and is inclined downward from the direction of the grinding wheel (2) towards the direction of the guide wheel (3). The anti-jump part (52) is inclined upward from the direction of the grinding wheel (2) towards the direction of the guide wheel (3). The suction groove (53) is provided on the surface of the anti-jump part (52). The tray (5) has a transition cavity (54) that communicates with the suction groove (53), and the suction pipe (61) is connected to the inner wall of the transition cavity (54). A drain hole (55) is also provided at the bottom of the inner wall of the transition cavity (54), and a drain channel (56) is also provided in the tray (5). One end of the drain channel (56) is connected to the drain hole (55), and the other end is connected to the outer surface of the tray (5).

2. The bearing ring grinding device according to claim 1, characterized in that: The anti-jump mechanism (6) also includes a second fan (63) and an air outlet pipe (64) connected to the second fan (63). The air outlet (641) of the air outlet pipe (64) is located above the frame (1) and close to the direction in which the workpiece enters.

3. The bearing ring grinding device according to claim 2, characterized in that: The air outlet (641) is inclined downward along the forward direction of the workpiece, and the connection between the support part (51) and the anti-jump part (52) is also inclined downward along the forward direction of the workpiece.

4. The bearing ring grinding device according to claim 2, characterized in that: The anti-jump mechanism (6) also includes a bracket (66), and the air outlet pipe (64) passes through and is fixed on the bracket (66); the bracket (66) is inclined downward from the direction of the guide wheel (3) towards the direction of the grinding wheel (2), and the inclined downward edge of the bracket (66) is located above the position of the grinding wheel (2) near the workpiece; the cooling mechanism (7) includes a water outlet pipe (71), and the water outlet end (711) of the water outlet pipe (71) is located above the bracket (66).

5. The bearing ring grinding device according to claim 1, characterized in that: The bottom wall of the transition cavity (54) is inclined downward toward the drain hole (55).

6. The bearing ring grinding device according to claim 1, characterized in that: The suction pipe (61) includes a vertical section (611) and a horizontal section (612) that are connected. The bottom wall of the vertical section (611) is provided with a water outlet (613), which is connected to the drainage channel (56).

7. The bearing ring grinding device according to claim 1, characterized in that: The top surface of the support (51) is provided with a drainage groove (57), and the tray (5) is provided with a drainage cavity (58) that communicates with the drainage groove (57). The bottom of the drainage cavity (58) is connected to the drainage channel (56).

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