Error-proofing of inner diameter grinding of magnetic poles

Abstract

The utility model relates to a kind of inner diameter grinding mistake-proof magnetic pole, one end of magnetic pole is axially installed on grinding machine workbench, the other end of magnetic pole is axially built with the groove with circular cross section, the outside of groove is formed with a circle of magnetic adsorption end face, the two ends of bearing ring are respectively built with first grinding groove and second grinding groove inward, the inner edge of first grinding groove is axially recessed to form step, installation groove is opened on the bottom surface of groove along the axial direction, one end of a connecting pin is inserted on installation groove, the other end of connecting pin extends into step, at this time, magnetic adsorption end face adsorbs first matching end face, second grinding groove cooperates with inner diameter grinding of grinding wheel;Connecting pin is removed from installation groove, at this time, magnetic adsorption end face adsorbs second matching end face, first grinding groove cooperates with inner diameter grinding of grinding wheel. The present scheme is matched by setting connecting pin and step structure, effectively avoids the error of inner diameter grinding due to workpiece installation, ensures that user can install and use product.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine processing technology, and in particular to a magnetic pole for preventing misalignment during internal diameter grinding. Background Technology

[0002] Existing grinding machines use magnetic poles to grind some workpieces so that both sides are the same, such as grinding... Figures 1-3 When grinding workpieces, the basic dimensions at both ends of the workpiece are 180, but the grinding tolerances are slightly different. One side is 180K7 (+0.012 / -0.028), and the other side is 180H7 (+0.04 / 0). During grinding, workers may place the workpiece in reverse, resulting in the dimensions on both sides of the workpiece being ground in the wrong direction. This makes it impossible for users to install the workpiece and increases production costs. Summary of the Invention

[0003] To address the aforementioned issues, the purpose of this invention is to provide an anti-misalignment magnetic pole for inner diameter grinding, which can prevent the dimensions on both sides of the workpiece from being ground in reverse, thus ensuring product quality and user installation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A magnetic pole for preventing errors in inner diameter grinding, wherein one end of the magnetic pole is axially mounted on the worktable of a grinding machine, and the other end of the magnetic pole has a circular groove axially formed inward, with a magnetic adsorption end face formed on the outer side of the groove. A first grinding groove and a second grinding groove are respectively formed inward at both ends of a bearing ring, and a through hole communicating with the first and second grinding grooves is formed in the middle of the bearing ring. A first mating end face and a second mating end face, respectively, are formed on the outer sides of the first and second grinding grooves and are attracted by the magnetic adsorption end face. The characteristic feature is that: The inner edge of the first grinding groove is recessed inward to form a step. An installation groove is provided on the bottom surface of the groove along the axial direction. One end of a connecting pin is inserted into the installation groove, and the other end of the connecting pin extends into the step. At this time, the magnetic adsorption end face adsorbs the first mating end face, and the second grinding groove and the grinding wheel are engaged in inner diameter grinding. When the connecting pin is removed from the installation groove, the magnetic adsorption end face adsorbs the second mating end face, and the first grinding groove and the grinding wheel are engaged in inner diameter grinding.

[0005] In the above technical solution, a pin is inserted into the inner groove of the magnetic pole. When grinding the second grinding groove (H7 inner diameter tolerance) of the bearing ring, the pin can enter the step gap inside the first grinding groove. If the workpiece is installed backwards (i.e., attempting to grind the first grinding groove), the connecting pin will press against the end face of the ring, i.e., the bottom surface of the second grinding groove (because there is no step on the other side), making it impossible to place and process the workpiece. The pin can be removed when grinding the inner diameter of the other side. In this way, by setting the connecting pin and the step structure, the function of preventing incorrect installation of the bearing ring is achieved, which plays a mechanical error prevention role, effectively avoiding the inner diameter grinding error caused by the workpiece being installed backwards, improving processing accuracy and efficiency, reducing scrap rate, and ensuring that users can install and use the product.

[0006] Preferably, the end of the connecting pin extending into the step and its sidewall are respectively clearance-fitted with the bottom surface and inner wall of the step. In this technical solution, the axial distance from the bottom surface of the mounting groove to the bottom surface of the step is greater than the length of the connecting pin, which is greater than the axial distance from the bottom surface of the mounting groove to the bottom surface of the first grinding groove. This ensures that the end of the connecting pin extending into the step and its sidewall are clearance-fitted with the bottom surface and inner wall of the step, thus guaranteeing the reliability of the error-proof function and preventing the connecting pin from contacting the bearing ring during grinding, which could cause workpiece wear.

[0007] Preferably, the mounting groove has a circular cross-section, and the connecting pin is a cylindrical connecting pin. In this technical solution, by designing the mounting groove and connecting pin as a circular groove and a cylindrical structure, the parts are easy to process and standardized for production, reducing manufacturing costs. The cylindrical connecting pin offers better ease of assembly and disassembly, improving the practicality and economy of the overall structure.

[0008] Preferably, the radial width of the magnetic adsorption end face is the same as that of the first mating end face and the second mating end face. In this technical solution, the area of ​​the magnetic adsorption end face of the magnetic pole is the same as that of the two end faces of the bearing ring. This increases the contact adsorption area between the magnetic pole and the bearing ring, improves the adsorption and fixing effect of the magnetic pole on the bearing ring, and enhances the positioning stability of the workpiece during the grinding process, thereby ensuring grinding accuracy and processing quality.

[0009] Preferably, the sidewall of the magnetic pole has multiple discharge holes communicating with the groove in the circumferential direction. In this technical solution, when the grinding wheel grinds the inner diameter, some of the chips will enter the magnetic pole through the through hole in the middle of the bearing ring. By setting discharge holes on the sidewall of the magnetic pole, the metal chips generated during the grinding process and entering the magnetic pole can be discharged from the groove in a timely manner, reducing interference with the grinding process and improving the cleanliness and reliability of the grinding process.

[0010] Preferably, the magnetic adsorption end face is cut with several notches along the axial direction, and the notches are constructed to connect the groove and the outside of the magnetic pole. In this technical solution, the notches form an inward arc surface, which increases the corresponding adsorption area between the bearing ring and the magnetic pole, thereby improving the adsorption and fixation effect on the bearing ring. Furthermore, metal chips generated by the grinding wheel during grinding of the inner wall of the bearing ring can also be discharged from the notches in a timely manner, reducing interference with the grinding process. In addition, the notches and the discharge hole are staggered to prevent the notches and the discharge hole from being on the same vertical wall, ensuring the structural stability of the magnetic pole sidewall.

[0011] Preferably, the plurality of notches are radially and regularly arranged on the magnetic adsorption end face. In this technical solution, the radially and regularly arranged plurality of notches facilitate the circumferential discharge of metal debris from the notches, while ensuring that the adsorption effect on the bearing rings is approximately the same at all points on the magnetic adsorption end face. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the grinding tolerances of the inner diameters on both sides of the bearing race.

[0013] Figure 2 This is a schematic diagram of the inner diameter of the second grinding groove in an existing magnetically adsorbed bearing ring.

[0014] Figure 3 This is a schematic diagram of the inner diameter of the first grinding groove in an existing magnetically adsorbed bearing ring.

[0015] Figure 4 This is a schematic diagram showing the connecting pin on the magnetic pole extending into the step when grinding the inner diameter of the second grinding groove.

[0016] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0017] Figure 6 A schematic diagram showing the removal of the connecting pin on the magnetic pole when grinding the inner diameter of the first grinding groove.

[0018] Figure 7 This is a top-view cross-section diagram of a magnetic pole. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] like Figures 4-7The diagram illustrates an internal diameter grinding anti-misalignment magnetic pole. One end of the magnetic pole 1 is axially mounted on the grinding machine worktable. The other end of the magnetic pole 1 has a circularly shaped groove 2 formed axially inward. A magnetic adsorption end face 3 is formed on the outer side of the groove 2. A first grinding groove 5 and a second grinding groove 6 are respectively formed inward at both ends of a bearing ring 4. A through hole 7 is formed in the middle of the bearing ring 4, communicating with the first grinding groove 5 and the second grinding groove 6. A first mating end face 8, which is attracted by the magnetic adsorption end face 3, is formed on the outer side of the first grinding groove 5 and the second grinding groove 6, respectively. The second mating end face 9, the inner edge of the first grinding groove 5 is axially recessed to form a step 10, the bottom surface of the groove 2 is provided with an axially oriented mounting groove 11, one end of a connecting pin 12 is inserted into the mounting groove 11, and the other end of the connecting pin 12 extends into the step 10. At this time, the magnetic adsorption end face 3 adsorbs the first mating end face 8, and the second grinding groove 6 engages with the grinding wheel for inner diameter grinding; the connecting pin 12 is removed from the mounting groove 11, at this time, the magnetic adsorption end face 3 adsorbs the second mating end face 9, and the first grinding groove 5 engages with the grinding wheel for inner diameter grinding.

[0025] In the above technical solution, a pin is inserted into the inner groove of the magnetic pole. When grinding the second grinding groove (H7 inner diameter tolerance) of the bearing ring, the pin can enter the step gap inside the first grinding groove. If the workpiece is installed backwards (i.e., attempting to grind the first grinding groove), the connecting pin will press against the end face of the ring, i.e., the bottom surface of the second grinding groove (because there is no step on the other side), making it impossible to place and process the workpiece. The pin can be removed when grinding the inner diameter of the other side. In this way, by setting the connecting pin and the step structure, the function of preventing incorrect installation of the bearing ring is achieved, which plays a mechanical error prevention role, effectively avoiding the inner diameter grinding error caused by the workpiece being installed backwards, improving processing accuracy and efficiency, reducing scrap rate, and ensuring that users can install and use the product.

[0026] It should be noted that the mounting slot can also be a through mounting hole, since the magnetic pole is mounted on the grinding machine, and the connecting pin cannot pass through the back of the magnetic pole. Additionally, since the step is circular, the connecting pin can be positioned along a circular path that allows it to extend into the step.

[0027] Furthermore, the end of the connecting pin 12 extending into the step 10 and its sidewall respectively engage with the bottom surface and sidewall of the step 10 with clearance. In this technical solution, the axial distance from the bottom surface of the mounting groove to the bottom surface of the step is greater than the length of the connecting pin, which is greater than the axial distance from the bottom surface of the mounting groove to the bottom surface of the first grinding groove. This ensures that the end of the connecting pin extending into the step and its sidewall respectively engage with the bottom surface and inner wall of the step with clearance, thus guaranteeing the reliability of the error prevention function and preventing the connecting pin from contacting the bearing ring during grinding, which could cause workpiece wear.

[0028] Furthermore, the mounting groove 11 has a circular cross-section, and the connecting pin 12 is a cylindrical connecting pin. In this technical solution, by designing the mounting groove and connecting pin as a circular groove and a cylindrical structure, the parts are easy to process and standardized for production, reducing manufacturing costs. The cylindrical connecting pin offers better ease of assembly and disassembly, improving the practicality and economy of the overall structure.

[0029] Furthermore, the radial width of the magnetic adsorption end face 3 is the same as that of the first mating end face 8 and the second mating end face 9. In this technical solution, the area of ​​the magnetic adsorption end face of the magnetic pole is the same as that of the two end faces of the bearing ring. This increases the contact adsorption area between the magnetic pole and the bearing ring, improves the adsorption and fixing effect of the magnetic pole on the bearing ring, and enhances the positioning stability of the workpiece during the grinding process, thereby ensuring grinding accuracy and processing quality.

[0030] Furthermore, the sidewall of the magnetic pole 1 is provided with a plurality of discharge holes 13 communicating with the groove 2. In this technical solution, when the grinding wheel grinds the inner diameter, some of the debris will enter the magnetic pole through the through hole in the middle of the bearing ring. By setting discharge holes on the sidewall of the magnetic pole, the metal debris generated during the grinding process and entering the magnetic pole can be discharged from the groove in a timely manner, reducing interference with the grinding process and improving the cleanliness and reliability of the grinding process.

[0031] Furthermore, the magnetic adsorption end face 3 is axially cut with several notches 14, which are constructed to connect the groove 2 and the outside of the magnetic pole 1. In this technical solution, the notches form an inward arc surface, which increases the corresponding adsorption area between the bearing ring and the magnetic pole, thereby improving the adsorption and fixing effect on the bearing ring. Furthermore, metal chips generated by the grinding wheel during grinding of the inner wall of the bearing ring can also be discharged from the notches in a timely manner, reducing interference with the grinding process. In addition, the notches and the discharge hole are staggered to prevent them from being on the same vertical wall, ensuring the structural stability of the magnetic pole sidewall.

[0032] Furthermore, the plurality of notches 14 are radially and regularly arranged on the magnetic adsorption end face 3. In this technical solution, the radially and regularly arranged notches facilitate the circumferential discharge of metal debris from the notches, while ensuring that the adsorption effect on the bearing rings is approximately the same at all points on the magnetic adsorption end face.

[0033] In this specific embodiment, addressing the problem that existing magnetic pole grinders, where both sides are identical, often result in workers mistakenly placing the workpiece backwards during grinding, leading to reversed dimensions on both sides and preventing customer installation, the above solution involves installing a connecting pin in the mounting groove at the bottom of the magnetic pole groove. When grinding the inner diameter (within the tolerance of H7) of the second grinding groove, the pin is inserted, allowing it to enter the stepped gap. If the workpiece is installed backwards, and there is no step on the other side, the locating pin will press against the end face of the collar, preventing the workpiece from being placed and processed. The pin can be removed when grinding the inner diameter of the other side. Actual verification has confirmed that the reversed inner diameter dimensions at both ends of the workpiece have never occurred again.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A magnetic pole for preventing misalignment during inner diameter grinding, wherein one end of the magnetic pole (1) is axially mounted on the worktable of a grinding machine, and the other end of the magnetic pole (1) is axially constructed with a groove (2) having a circular cross-section, and a magnetic adsorption end face (3) is formed on the outer side of the groove (2), and a first grinding groove (5) and a second grinding groove (6) are respectively constructed inward at both ends of a bearing ring (4), and a through hole (7) is formed in the middle of the bearing ring (4) communicating with the first grinding groove (5) and the second grinding groove (6), and a first mating end face (8) and a second mating end face (9) adsorbed by the magnetic adsorption end face (3) are respectively formed on the outer side of the first grinding groove (5) and the second grinding groove (6), characterized in that: The inner edge of the first grinding groove (5) is recessed inward to form a step (10). An installation groove (11) is provided on the bottom surface of the groove (2) along the axial direction. One end of a connecting pin (12) is inserted into the installation groove (11), and the other end of the connecting pin (12) extends into the step (10). At this time, the magnetic adsorption end face (3) adsorbs the first mating end face (8), and the second grinding groove (6) is mated with the grinding wheel for inner diameter grinding. The connecting pin (12) is removed from the installation groove (11). At this time, the magnetic adsorption end face (3) adsorbs the second mating end face (9), and the first grinding groove (5) is mated with the grinding wheel for inner diameter grinding.

2. The anti-misalignment magnetic pole for inner diameter grinding according to claim 1, characterized in that: The end of the connecting pin (12) that extends into the step (10) and the side wall are respectively fitted with the bottom surface and the side wall of the step (10) with clearance.

3. The anti-misalignment magnetic pole for inner diameter grinding according to claim 2, characterized in that: The mounting groove (11) has a circular cross-section, and the connecting pin (12) is a cylindrical connecting pin.

4. The anti-misalignment magnetic pole for inner diameter grinding according to claim 1, characterized in that: The radial width of the magnetic adsorption end face (3) is the same as that of the first mating end face (8) and the second mating end face (9).

5. The anti-misalignment magnetic pole for inner diameter grinding according to claim 1, characterized in that: The sidewall of the magnetic pole (1) is provided with a plurality of discharge holes (13) that communicate with the groove (2) in the circumferential direction.

6. The anti-misalignment magnetic pole for inner diameter grinding according to claim 5, characterized in that: The magnetic adsorption end face (3) is cut with several notches (14) along the axial direction. The notches (14) are constructed to connect the groove (2) and the outside of the magnetic pole (1).

7. The anti-misalignment magnetic pole for inner diameter grinding according to claim 6, characterized in that: The plurality of notches (14) are arranged radially and regularly on the magnetic adsorption end face (3).

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