A device for grinding and chamfering water pump bearings

Abstract

The present invention discloses a device for grinding and chamfering water pump bearings, comprising a workbench, an annular sanding belt mechanism for grinding the bearing chamfer arranged on the workbench, a bearing transporting mechanism for transporting the bearing to be ground and the ground bearing, a bearing, and a bearing fixing seat and a bearing servo motor arranged below the bearing; a tooling capable of adjusting the angle is provided on the grinding wheel transmission shaft, and the grinding wheel transmission shaft cooperates with the annular sanding belt so that the annular sanding belt can grind the bearing chamfer along a set angle; the present invention adopts an annular sanding belt to grind the chamfer and enables the annular sanding belt to grind along a specific angle, solves the problem of chamfer surface smoothness when grinding the chamfer, and solves the problem of chamfer circumferential uniformity when grinding the chamfer, so that the chamfer after secondary grinding overcomes the defect that the edge line of the chamfer after machining the chamfer causes wear to the bearing shell, and also solves the problems of low efficiency and poor accuracy of manual chamfer grinding.

Description

Technical Field

[0001] The invention belongs to the technical field of water pump bearings, and in particular relates to a device for grinding and chamfering water pump bearings. Background Art

[0002] The conventional method for chamfering the water pump bearing is to use a machining lathe to chamfer the core shaft and outer ring of the bearing respectively. After chamfering, the core shaft and the outer ring are left with relatively sharp chamfer cut edges along the chamfering direction. The chamfer cut edges will cause wear to the housing and pulley of the water pump bearing: the pulley is generally made of powder metallurgy material, and the housing is generally made of aluminum alloy or cast iron. Since the hardness of these two materials is much lower than the hardness of the bearing, the bearing cut edge will cut off a layer of the pulley and the housing. Since there is an interference fit between the water pump bearing housing and the bearing outer ring, and between the water pump bearing pulley and the bearing core shaft, when a layer of the pulley and the housing is cut off, slippage will occur between the water pump bearing housing and the bearing outer ring, and between the water pump bearing pulley and the bearing core shaft. At this time, the interference fit fails.

[0003] In order to reduce the wear of the chamfer cut edge on the bearing housing and the pulley, the conventional technology adopts the method of manual sandpaper grinding. Manual grinding is not only very inefficient, but also difficult to control the uniformity of the chamfer grinding. For example, when the chamfer is ground, the force is inconsistent along the chamfer direction. Some places in the circumference of the chamfer are repeatedly ground, while some places are not ground in place. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention proposes a device for grinding and chamfering water pump bearings. The first purpose is to solve the problem that machining and chamfering easily cause wear to the bearing housing; the second purpose is to solve the problem that manual chamfering is inefficient and uneven.

[0005] The present invention adopts the following technical solutions to solve the technical problems:

[0006] A device for grinding and chamfering a water pump bearing comprises a workbench (1), an annular sanding belt mechanism (2) arranged on the workbench for grinding and chamfering the bearing, a bearing transport mechanism (3) for transporting bearings to be ground and bearings that have been ground, a bearing (4), and a bearing fixing seat (5-1) and a bearing motor (5-2) arranged below the bearing (4); grinding and chamfering the bearing refers to performing a secondary grinding and chamfering on the bearing (4) after the first cutting and chamfering has been completed by lathe machining; and is characterized in that:

[0007] The annular sanding belt mechanism (2) is provided with a grinding wheel fixing seat (2-1), and the grinding wheel fixing seat (2-1) is provided with an annular sanding belt (2-4) and a grinding wheel transmission shaft (2-3); the grinding wheel fixing seat (2-1) is used to make the annular sanding belt (2-4) and the grinding wheel transmission shaft (2-3) move linearly along the width direction and the length direction of the workbench (1); the grinding wheel transmission shaft (2-3) is used to make the annular sanding belt (2-4) move along the circumferential direction;

[0008] The grinding wheel transmission shaft (2-3) is provided with a tool (2-6) capable of adjusting an angle. The tool (2-6) cooperates with the grinding wheel transmission shaft (2-3) so that the annular grinding belt (2-4) can grind the bearing (4) along a set angle when performing chamfer grinding on the bearing (4).

[0009] The grinding wheel fixing seat (2-1) is used to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move linearly along the width direction of the workbench (1), that is, to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move laterally; the grinding wheel fixing seat (2-1) is used to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move linearly along the length direction of the workbench (1), that is, to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move toward or away from the bearing (4);

[0010] When the annular abrasive belt (2-4) performs chamfering and grinding on the bearing (4), the bearing (4) and the annular abrasive belt (2-4) move simultaneously: the bearing (4) performs rotational motion, and the annular abrasive belt (2-4) performs circumferential motion and lateral motion.

[0011] Furthermore, the lower surface of the grinding wheel fixing seat (2-1) is fixedly equipped with: a sanding belt motor (2-7-1), a transverse motor (2-7-2), a slide cylinder (2-7-4), and a linear guide rail (2-7-3); the sanding belt motor (2-7-1) is used to drive the annular sanding belt (2-4) to move along the circumferential direction; the transverse motor (2-7-2) is used to drive the annular sanding belt (2-4) to move laterally along the direction of the linear guide rail (2-7-3); the slide cylinder (2-7-4) is connected to the cylinder connecting plate (2-7-4-1) through The cylinder connecting plate (2-7-4-1) is connected to the sliding sleeve of the linear guide rail (2-7-3), and then connected to the grinding wheel fixing seat (2-1) through the sliding sleeve of the linear guide rail (2-7-3). The grinding wheel fixing seat (2-1) drives the annular sanding belt mechanism (2) to perform linear motion in the front and rear directions; the sanding belt motor (2-7-1), the traverse motor (2-7-2), and the bearing motor (5-2) are all controlled by PLC, and the sanding belt motor (2-7-1), the traverse motor (2-7-2), and the bearing motor (5-2) are all servo motors.

[0012] Furthermore, the grinding wheel transmission shaft (2-3) is provided with a first sand belt transmission shaft (2-3-1), a second sand belt transmission shaft (2-3-2), and a third sand belt transmission shaft (2-3-3); the first sand belt transmission shaft (2-3-1) is an active transmission shaft, the second sand belt transmission shaft (2-3-2) and the third sand belt transmission shaft (2-3-3) are passive transmission shafts, and the first sand belt transmission shaft (2-3-1) is driven by a sand belt motor (2-7-1).

[0013] Furthermore, the tooling (2-6) cooperates with the grinding wheel transmission shaft (2-3), that is, the second sand belt transmission shaft (2-3-2) and the third sand belt transmission shaft (2-3-3) of the grinding wheel transmission shaft (2-3), and the two ends of their respective shafts are respectively connected to the tooling centering plate (2-6-3), and the angle of the line connecting the two axes of the second sand belt transmission shaft (2-3-2) and the third sand belt transmission shaft (2-3-3) is adjusted by adjusting the inclination of the tooling centering plate (2-6-3), thereby adjusting the angle of the line connecting the two axes of the second sand belt transmission shaft (2-3-2) and the third sand belt transmission shaft (2-3-3).

[0014] Furthermore, the angle between the two axis lines is 12°-15°.

[0015] Furthermore, the tooling (2-6) and the grinding wheel transmission shaft (2-3) are matched, that is, the tooling (2-6) is provided with a tooling clamping plate (2-6-1), a tooling centering fixing plate (2-6-2), and a tooling centering plate (2-6-3); the tooling centering fixing plate (2-6-2) is provided with two vertically arranged transverse screws, the front ends of the two vertically arranged transverse screws are respectively pressed against the tooling centering plate (2-6-3), and the inclination of the tooling centering plate (2-6-3) is adjusted by adjusting the distance between the two transverse screws and the tooling centering plate (2-6-3), thereby adjusting the angle of the two axis connection lines of the second sanding belt transmission shaft (2-3-2) and the third sanding belt transmission shaft (2-3-3).

[0016] Furthermore, when the chamfer grinding of a bearing is completed, the annular abrasive belt (2-4) rotates one cycle along the width direction, and the bearing (4) rotates 1.1 turns. One cycle refers to the annular abrasive belt (2-4) rotating one round trip along the width direction.

[0017] Furthermore, the width of the annular sanding belt (2-4) is determined according to the diameter of the bearing. When the chamfer grinding of a bearing is completed and the annular sanding needs to move for 1 cycle, the width of the sanding belt = the circumference of the bearing / 2.

[0018] Furthermore, when the chamfering and grinding of the current bearing is completed, the slide cylinder (2-7-4) drives the grinding wheel transmission shaft (2-3) and the annular grinding belt (2-4) on the annular grinding belt mechanism (2) to move backward in a direction away from the bearing (4); when the chamfering and grinding of the current bearing is started, the slide cylinder (2-7-4) drives the grinding wheel transmission shaft (2-3) and the annular grinding belt (2-4) on the annular grinding belt mechanism (2) to move forward in a direction close to the bearing (4).

[0019] Advantages and effects of the present invention

[0020] 1. The present invention installs an angle-adjustable tool 2-6 on the grinding wheel drive shaft 2-3, so that the annular grinding belt 2-4 can grind the chamfer of the bearing 4 along a set angle, thereby solving the problem of the adjustable angle of the annular grinding belt 2-6.

[0021] 2. The present invention solves the problem of surface smoothness of the bearing chamfer by simultaneously chamfering in two directions and selecting the appropriate thickness of the annular abrasive belt; by matching the number of turns of the bearing during chamfering (1.1 turns) with the operating cycle of the annular abrasive belt, and matching the operating cycle of the annular abrasive belt with the width of the annular abrasive belt (the width of the annular abrasive belt is an integer multiple of the cycle), the problem of circumferential uniformity of the chamfer during chamfering is solved.

[0022] 3. By adopting tooling with adjustable angles, the problem of chamfer surface smoothness and the problem of chamfer circumferential uniformity are solved during chamfering. The chamfer after secondary grinding overcomes the defect of wear of the bearing housing and pulley caused by the chamfer cut edge after machining, and also solves the problem of low efficiency and poor accuracy of manual chamfering.

[0023] 4. The present invention realizes full automation of bearing chamfer grinding. Compared with manual chamfer grinding, it not only doubles the efficiency but also has higher precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a first-perspective view of the appearance of a water pump bearing grinding and chamfering device according to the present invention;

[0025] Figure 2 This is a second perspective view of the appearance of a water pump bearing grinding and chamfering device according to the present invention;

[0026] Figure 3 Schematic diagram of three abrasive belt drive shafts of the present invention;

[0027] Figure 4 This is a schematic diagram of the connection between the sanding belt drive shaft and the tooling of the present invention;

[0028] Figure 5 This is a structural diagram of the tooling with adjustable angles according to the present invention;

[0029] Figure 6 Schematic diagram of the handling device of the present invention;

[0030] Figure 7 Schematic diagram of the driving device bound to the workbench of the present invention.

[0031] 1: Workbench; 2: Annular abrasive belt mechanism; 2-1: Grinding wheel fixing seat; 2-2: Grinding wheel support vertical plate; 2-3: Grinding wheel drive shaft; 2-3-1: First abrasive belt drive shaft; 2-3-2: Second abrasive belt drive shaft; 2-3-3: Third abrasive belt drive shaft; 2-4: Annular abrasive belt; 2-5: Grinding wheel guide plate; 2-6: Tooling; 2-6-1: Tooling clamping plate; 2-6-2: Tooling centering fixing plate; 2-6-3: Tooling centering plate ;2-7-1: Grinding wheel belt motor; 2-7-2: Transverse movement motor; 2-7-3: Linear guide; 2-7-4: Slide cylinder; 3: Transport mechanism; 3-1: Cylinder; 3-2: Pneumatic finger; 3-2-1: Mixing finger for bearings to be repaired; 3-2-2: Mixing finger for repaired bearings; 3-3: Support vertical plate; 3-4: Crossbar; 4: Bearing; 5: Bearing fixing mechanism; 5-1: Bearing support seat; 5-2: Bearing motor; DETAILED DESCRIPTION

[0032] Design principle of the present invention

[0033] 1. Innovation of the present invention: The innovation lies in adding an angle-adjustable tooling 2-6 to the grinding wheel drive shaft 2-3. The inner side of the tooling centering plate 2-6-3 is connected to the second sanding belt drive shaft 2-3-2 and the third sanding belt drive shaft 2-3-3 respectively. By adjusting the distance between the two screws on the tooling centering fixing plate 2-6-2 and the tooling centering plate 2-6-3, the grinding angle of the annular sanding belt 2-4 for the bearing can be further adjusted.

[0034] 2. Design Difficulties and Solutions: The difficulty lies in the precision of chamfer grinding. The chamfer grinding method of the present invention differs from the prior art method of lathe-cut chamfering in that the chamfer grinding requires tangential smoothness, while the chamfer cutting method of a machine lathe can only achieve tangential smoothness. The chamfer grinding method of the present invention is a secondary grinding after the bearing has been chamfered on a lathe. The difficulty of secondary grinding lies in the fact that the transition between the lower edge of the chamfer after grinding and the circumferential surface of the bearing must be tangential. Achieving this tangential transition requires coordination in several aspects. First, the selection and adjustment of the grinding angle. The chamfer grinding method of this embodiment is specifically designed for the lower edge of the bearing chamfer, with an angle of 12°-15°, which is closest to achieving tangential smoothness. The significance of using a tool lies in the adjustable angle, as different chamfer angles correspond to different grinding angles. Second, the circumferential uniformity of the chamfer grinding is ensured. Circumferential uniformity requires that the annular abrasive belt stop grinding when the bearing stops rotating. When the bearing stops after 1.1 rotations, the annular abrasive belt 2-4 must be separated from the bearing 4. Otherwise, if the bearing 4 stops rotating but the abrasive belt has not yet separated from the bearing, the abrasive belt will continue to grind the bearing. Since the bearing is no longer rotating, only the areas of the bearing in contact with the annular abrasive belt are ground, resulting in uneven circumferential grinding of the bearing. The present invention uses a servo motor to control the stopping of the bearing and the separation of the annular abrasive belt from the bearing. Third, the width and period of the annular abrasive belt 2-4 must be matched. This matching means that the width of the annular abrasive belt 2-4 must be an integer multiple of the period. The speed of the transverse motor determines the number of periods of the transverse motion of the abrasive belt within 1.1 rotations of the bearing. The width of the abrasive belt = the circumference of the bearing / 1*2. In other words, the width of the annular abrasive belt must be an integer multiple of the circumference of the bearing / 1*2. Fourth, when the annular abrasive belt 2-4 is grinding the bearing chamfer, the circumferential motion and transverse motion of the annular abrasive belt 2-4 must occur simultaneously. Grinding the bearing chamfer in only one direction, for example, along the circumference of the annular abrasive belt 2-4, constitutes one-directional grinding. The present invention simultaneously grinds along the width of the annular abrasive belt 2-4 in addition to axial grinding, transforming unidirectional grinding into bidirectional grinding, further ensuring the smoothness of the chamfer. Fifth, regarding the selection of the grit of the annular abrasive belt 2-4, this embodiment selects a grit of 120. Too fine a grit will result in low grinding efficiency, while too coarse a grit will cause further damage to the bearing housing. Although this eliminates sharp corners and tangential transitions during a single cut, the roughness of the tangential surface will also damage the bearing housing.

[0035] In summary: Grinding chamfers must be a combination of three aspects, none of which can be missing. The first is the selection of the grinding angle. If the angle is chosen incorrectly, the original angle may be destroyed. The tangent transition must be achieved without destroying the original angle. The second is to ensure circumferential uniformity during bearing grinding. After the bearing is rotated 1.1 times by the servo motor, the sanding belt must be separated from the bearing, and the width of the sanding belt must be an integer multiple of the sanding belt period. If it is not an integer multiple, uneven circumferential grinding of the bearing will still occur. The third is the coarse and fine grain size of the bearing grinding surface. The present invention adopts the method of grinding in two directions simultaneously when grinding the bearing chamfers, and the sanding belt has an appropriate coarseness and fineness. In short, if any of the three aspects is ignored, the purpose of smooth tangency cannot be achieved.

[0036] Based on the above principle, the present invention discloses a device for grinding and chamfering water pump bearings. Figure 1-Figure 7 As shown, it includes a workbench 1, an annular sanding belt mechanism 2 arranged on the workbench for grinding bearing chamfers, a bearing transport mechanism 3 for transporting bearings to be ground and bearings that have been ground, a bearing 4, and a bearing fixing seat 5-1 and a bearing motor 5-2 arranged below the bearing 4; the grinding of the bearing chamfer refers to a secondary grinding and chamfering of the bearing 4 based on the first cutting chamfer completed by lathe processing; its characteristics are:

[0037] like Figure 2 、 Figure 3 As shown, the annular sanding belt mechanism 2 is provided with a grinding wheel fixing seat 2-1, and the grinding wheel fixing seat 2-1 is provided with an annular sanding belt 2-4 and a grinding wheel transmission shaft 2-3; the grinding wheel fixing seat 2-1 is used to make the annular sanding belt 2-4 and the grinding wheel transmission shaft 2-3 move linearly along the width direction and the length direction of the workbench 1; the grinding wheel transmission shaft 2-3 is used to make the annular sanding belt 2-4 move along the circumferential direction;

[0038] The grinding wheel transmission shaft 2-3 is provided with an angle-adjustable tool 2-6, which cooperates with the grinding wheel transmission shaft 2-3 so that the annular grinding belt 2-4 can grind the bearing 4 along a set angle when performing chamfering.

[0039] The grinding wheel fixing seat 2-1 is used to make the annular grinding belt 2-4 and the grinding wheel transmission shaft 2-3 move linearly along the width direction of the workbench 1, that is, to make the annular grinding belt 2-4 and the grinding wheel transmission shaft 2-3 move laterally; the grinding wheel fixing seat 2-1 is used to make the annular grinding belt 2-4 and the grinding wheel transmission shaft 2-3 move linearly along the length direction of the workbench 1, that is, to make the annular grinding belt 2-4 and the grinding wheel transmission shaft 2-3 move toward or away from the bearing 4;

[0040] Supplementary Note 1

[0041] like Figure 1As shown, the linear motion along the width and length directions of the workbench 1 is movement along the coordinate axes Y and X; or the annular abrasive belt 2-4 and the grinding wheel drive shaft 2-3 are moved laterally, that is, along the coordinate axis Y, and the annular abrasive belt 2-4 and the grinding wheel drive shaft 2-3 are moved toward or away from the bearing 4, that is, along the coordinate axis X.

[0042] When the annular abrasive belt 2 - 4 performs chamfering and grinding on the bearing 4 , the bearing 4 and the annular abrasive belt 2 - 4 move simultaneously: the bearing 4 performs rotational motion, and the annular abrasive belt 2 - 4 performs circumferential motion and lateral motion.

[0043] like Figure 7 As shown, the lower surface of the grinding wheel fixing seat 2-1 is fixed with: a sanding belt motor 2-7-1, a transverse motor 2-7-2, a slide cylinder 2-7-4, and a linear guide rail 2-7-3; the sanding belt motor 2-7-1 is used to drive the annular sanding belt 2-4 to move along the circumferential direction; the transverse motor 2-7-2 is used to drive the annular sanding belt 2-4 to move laterally along the direction of the linear guide rail 2-7-3; the slide cylinder 2-7-4 is connected to the cylinder connecting plate 2-7-4-1, and is connected to the linear guide rail 2-7-3 by air. The cylinder connecting plate 2-7-4-1 is connected to the sliding sleeve of the linear guide rail 2-7-3, and then connected to the grinding wheel fixing seat 2-1 through the sliding sleeve of the linear guide rail 2-7-3, and the grinding wheel fixing seat 2-1 drives the annular sanding belt mechanism 2 to perform linear motion in the front and rear directions; the sanding belt motor 2-7-1, the transverse motor 2-7-2, and the bearing motor 5-2 are all controlled by PLC, and the sanding belt motor 2-7-1, the transverse motor 2-7-2, and the bearing motor 5-2 are all servo motors.

[0044] Supplementary Note 3:

[0045] The sliding sleeve on the linear guide 2-7-3 is Figure 7 This sliding sleeve is connected with the grinding wheel fixed seat 2-1, and simultaneously this sliding sleeve and cylinder connecting plate 2-7-4-1, slide cylinder 2-7-4 are connected with cylinder connecting plate 2-7-4-1 again.

[0046] like Figure 3 As shown, the grinding wheel drive shaft 2-3 is provided with a first sanding belt drive shaft 2-3-1, a second sanding belt drive shaft 2-3-2, and a third sanding belt drive shaft 2-3-3. The first sanding belt drive shaft 2-3-1 is an active drive shaft, the second sanding belt drive shaft 2-3-2, and the third sanding belt drive shaft 2-3-3 are passive drive shafts, and the first sanding belt drive shaft 2-3-1 is driven by a sanding belt motor 2-7-1.

[0047] like Figure 4 、 Figure 5As shown, the tooling 2-6 cooperates with the grinding wheel drive shaft 2-3, that is: the second sanding belt drive shaft 2-3-2 of the grinding wheel drive shaft 2-3, and the third sanding belt drive shaft 2-3-3, the two ends of their respective shafts are respectively connected to the tooling centering plate 2-6-3, and the angle of the line connecting the two axes of the second sanding belt drive shaft 2-3-2 and the third sanding belt drive shaft 2-3-3 is adjusted by adjusting the inclination of the tooling centering plate 2-6-3.

[0048] Furthermore, the angle between the two axis lines is 12°-15°.

[0049] like Figure 5 As shown, the tooling 2-6 and the grinding wheel transmission shaft 2-3 are matched, that is: the tooling 2-6 is provided with a tooling clamping plate 2-6-1, a tooling centering fixing plate 2-6-2, and a tooling centering plate 2-6-3; the tooling centering fixing plate 2-6-2 is provided with two horizontal screws arranged vertically, and the front ends of the two horizontal screws arranged vertically are respectively tightened on the tooling centering plate 2-6-3, and the inclination of the tooling centering plate 2-6-3 is adjusted by adjusting the distance from the two horizontal screws to the tooling centering plate 2-6-3, thereby adjusting the angle of the two axis connection lines of the second sanding belt transmission shaft 2-3-2 and the third sanding belt transmission shaft 2-3-3.

[0050] Furthermore, when the chamfer grinding of a bearing is completed, the annular abrasive belt 2-4 rotates one cycle along the width direction, and the bearing 4 rotates 1.1 turns. One cycle means that the annular abrasive belt 2-4 goes back and forth along the width direction.

[0051] Supplementary Note 2 :

[0052] 1) After completing the chamfer grinding of a bearing, the number of turns of the bearing can be 2.1 turns or 3.1 turns, but a principle must be followed: the bearing must be rotated a full turn plus 0.1 turns during the grinding process. The extra 0.1 turn is to prevent missing grinding, and more than 0.1 turns will cause uneven circumference of the bearing;

[0053] 2) Number of bearing revolutions (integer) × 1 = Number of cycles of the annular abrasive belt. If the bearing rotates 2.1 revolutions, the annular abrasive belt 2-4 runs 2 cycles, that is, two back and forth movements along the width of the belt.

[0054] Furthermore, the width of the annular sanding belts 2-4 is determined according to the diameter of the bearing. When the chamfer grinding of a bearing is completed and the annular sanding requires one cycle of movement, the width of the sanding belts = the circumference of the bearing / 2.

[0055] like Figure 1As shown, when the chamfering grinding of the current bearing is completed, the slide cylinder 2-7-4 drives the grinding wheel transmission shaft 2-3 and the annular grinding belt 2-4 on the annular grinding belt mechanism 2 to move backward in the direction away from the bearing 4; when the chamfering grinding of the current bearing starts, the slide cylinder 2-7-4 drives the grinding wheel transmission shaft 2-3 and the annular grinding belt 2-4 on the annular grinding belt mechanism 2 to move forward in the direction close to the bearing 4.

[0056] Supplementary Note 4 :

[0057] Figure 1 This is a rendering of the grinding wheel drive shaft 2-3 and the annular abrasive belt 2-4 moving backward in a direction away from the bearing 4. At this time, the annular abrasive belt 2-4 and the bearing 4 are completely separated; Figure 2 This is a rendering showing that the grinding wheel drive shaft 2 - 3 and the annular grinding belt 2 - 4 move toward the direction close to the bearing 4 and the annular grinding belt has already contacted the bearing 4 .

[0058] Supplementary Note 5:

[0059] 1) Transport mechanism such as Figure 6 As shown, the transport mechanism 3 is used to move the bearing 4 to be ground from a set location to a grinding target location, and to transport the bearing 4 that has been ground from the grinding target location to a storage target location.

[0060] 2) The transport mechanism has two cylinders in two directions. 3-4 is the cylinder that drives the pneumatic finger 3-2 to move horizontally, and 3-1 is the cylinder that drives the pneumatic finger to move up and down. The above cylinders are all standard parts.

[0061] 3) There are two pneumatic fingers 3-2, which move simultaneously and are arranged side by side. It is assumed that one is used to carry the bearing finger 3-2-1 to be repaired, and the other is used to carry the repaired bearing finger 3-2-2. Figure 6 In the figure, the position of the finger 3-2-1 for carrying the bearing to be repaired is the initial position. Before returning to the initial position, the finger 3-2-1 for carrying the bearing to be repaired has already carried the bearing to be repaired to the target grinding position (that is, the position in contact with the annular abrasive belt 2-4) and completed the grinding. After the grinding is completed, the finger 3-2-1 for carrying the bearing to be repaired moves back to the left. Figure 6The initial position shown in the figure is displayed. Simultaneously, finger 3-2-2, which carries the repaired bearing, moves from right to left to the target grinding position as finger 3-2-1, which carries the bearing to be repaired, returns to its initial position. It then picks up the already-refined bearing. Simultaneously, finger 3-2-1, which carries the bearing to be repaired, picks up the next bearing to be repaired at its initial position. The two pneumatic fingers simultaneously pick up their respective bearings and move from left to right. Finger 3-2-1, which carries the bearing to be repaired, then moves rightward from its initial position, moving the bearing to be repaired into the grinding position where it contacts the annular abrasive belt. Simultaneously, finger 3-2-2, which carries the repaired bearing, moves rightward to the target storage point and deposits the repaired bearing it is currently picking up.

[0062] It should be emphasized that the above specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the above embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A device for grinding and chamfering a water pump bearing, comprising a workbench (1), an annular sanding belt mechanism (2) arranged on the workbench for grinding and chamfering a bearing, a bearing transport mechanism (3) for transporting bearings to be ground and bearings that have been ground, a bearing (4), and a bearing fixing seat (5-1) and a bearing motor (5-2) arranged below the bearing (4); grinding and chamfering a bearing means performing a secondary grinding and chamfering on the bearing (4) after the primary cutting and chamfering has been completed by lathe machining; and characterized in that: The annular sanding belt mechanism (2) is provided with a grinding wheel fixing seat (2-1), and the grinding wheel fixing seat (2-1) is provided with an annular sanding belt (2-4) and a grinding wheel transmission shaft (2-3); the grinding wheel fixing seat (2-1) is used to make the annular sanding belt (2-4) and the grinding wheel transmission shaft (2-3) move linearly along the width direction and the length direction of the workbench (1); the grinding wheel transmission shaft (2-3) is used to make the annular sanding belt (2-4) move along the circumferential direction; The grinding wheel transmission shaft (2-3) is provided with a tool (2-6) capable of adjusting an angle. The tool (2-6) cooperates with the grinding wheel transmission shaft (2-3) so that the annular grinding belt (2-4) can grind the bearing (4) along a set angle when performing chamfer grinding on the bearing (4). The grinding wheel fixing seat (2-1) is used to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move linearly along the width direction of the workbench (1), that is, to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move laterally; the grinding wheel fixing seat (2-1) is used to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move linearly along the length direction of the workbench (1), that is, to make the annular grinding belt (2-4) and the grinding wheel transmission shaft (2-3) move toward or away from the bearing (4); When the annular abrasive belt (2-4) performs chamfering and grinding on the bearing (4), the bearing (4) and the annular abrasive belt (2-4) move simultaneously: the bearing (4) performs rotational movement, and the annular abrasive belt (2-4) performs circumferential movement and lateral movement.

2. The device for grinding and chamfering water pump bearings according to claim 1, characterized in that: The lower surface of the grinding wheel fixing seat (2-1) is fixedly equipped with: a sanding belt motor (2-7-1), a transverse motor (2-7-2), a slide cylinder (2-7-4), and a linear guide rail (2-7-3); the sanding belt motor (2-7-1) is used to drive the annular sanding belt (2-4) to move along the circumferential direction; the transverse motor (2-7-2) is used to drive the annular sanding belt (2-4) to move transversely along the direction of the linear guide rail (2-7-3); the slide cylinder (2-7-4) is connected to the cylinder connecting plate (2-7-4-1) and is connected to the linear guide rail (2-7-3) through the cylinder. The connecting plate (2-7-4-1) is connected to the sliding sleeve of the linear guide rail (2-7-3), and then connected to the grinding wheel fixing seat (2-1) through the sliding sleeve of the linear guide rail (2-7-3). The grinding wheel fixing seat (2-1) drives the annular sanding belt mechanism (2) to perform linear motion in the front-back direction; the sanding belt motor (2-7-1), the traverse motor (2-7-2), and the bearing motor (5-2) are all controlled by PLC, and the sanding belt motor (2-7-1), the traverse motor (2-7-2), and the bearing motor (5-2) are all servo motors.

3. The device for grinding and chamfering water pump bearings according to claim 2, characterized in that: The grinding wheel transmission shaft (2-3) is provided with a first sand belt transmission shaft (2-3-1), a second sand belt transmission shaft (2-3-2), and a third sand belt transmission shaft (2-3-3); the first sand belt transmission shaft (2-3-1) is an active transmission shaft, the second sand belt transmission shaft (2-3-2) and the third sand belt transmission shaft (2-3-3) are passive transmission shafts, and the first sand belt transmission shaft (2-3-1) is driven by a grinding wheel motor (2-7-1).

4. The device for grinding and chamfering water pump bearings according to claim 3, characterized in that: The tooling (2-6) cooperates with the grinding wheel transmission shaft (2-3), namely: the second sanding belt transmission shaft (2-3-2) and the third sanding belt transmission shaft (2-3-3) of the grinding wheel transmission shaft (2-3); the two ends of each shaft are respectively connected to the tooling centering plate (2-6-3); by adjusting the inclination of the tooling centering plate (2-6-3), the angle of the connecting line of the two axes of the second sanding belt transmission shaft (2-3-2) and the third sanding belt transmission shaft (2-3-3) is adjusted.

5. The water pump bearing chamfering and grinding device according to claim 4, characterized in that: The angle between the two axis lines is 12°-15°.

6. The water pump bearing chamfering and grinding device according to claim 3, characterized in that: The tooling (2-6) is matched with the grinding wheel transmission shaft (2-3), that is, the tooling (2-6) is provided with a tooling clamping plate (2-6-1), a tooling centering fixing plate (2-6-2), and a tooling centering plate (2-6-3); the tooling centering fixing plate (2-6-2) is provided with two vertically arranged transverse screws, the front ends of the two vertically arranged transverse screws are respectively pressed against the tooling centering plate (2-6-3), and the inclination of the tooling centering plate (2-6-3) is adjusted by adjusting the distance between the two transverse screws and the tooling centering plate (2-6-3), thereby adjusting the angle of the connecting line of the two axis centers of the second sanding belt transmission shaft (2-3-2) and the third sanding belt transmission shaft (2-3-3).

7. The water pump bearing chamfering and grinding device according to claim 1, characterized in that: When the chamfer grinding of a bearing is completed, the annular abrasive belt (2-4) rotates one cycle along the width direction, and the bearing (4) rotates 1.1 turns. One cycle refers to the annular abrasive belt (2-4) rotating one round trip along the width direction.

8. The water pump bearing chamfering and grinding device according to claim 7, characterized in that: The width of the annular sanding belt (2-4) is determined according to the diameter of the bearing. When the chamfering and grinding of a bearing are completed and the annular sanding belt needs to move for one cycle, the width of the sanding belt is equal to the circumference of the bearing / 2.

9. The water pump bearing chamfering and grinding device according to claim 2, characterized in that: When the chamfering and grinding of the current bearing is completed, the slide cylinder (2-7-4) drives the grinding wheel transmission shaft (2-3) and the annular grinding belt (2-4) on the annular grinding belt mechanism (2) to move backward in a direction away from the bearing (4); when the chamfering and grinding of the current bearing is started, the slide cylinder (2-7-4) drives the grinding wheel transmission shaft (2-3) and the annular grinding belt (2-4) on the annular grinding belt mechanism (2) to move forward in a direction close to the bearing (4).

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