Variable-diameter rotary curved surface and welding seam self-adaptive polishing method and device

Abstract

The application discloses a variable-diameter rotary curved surface and a welding seam self-adapting polishing method and device, the device comprises a base, a support mounted on the base, a polishing device, a platform, a support, a self-adapting device and a rocker; the support is arranged on the base, the rocker is movably connected to the lower end of the support, the support is welded to the middle part of the rocker, and the platform is movably connected with the support; the polishing device is arranged above the center of the platform; the self-adapting device comprises a connecting plate, two connecting rods, an upper sliding mechanism and a lower sliding mechanism; the connecting plate is fixedly connected to the platform, the two connecting rods are fixedly connected to the upper and lower ends of the connecting plate, the upper sliding mechanism and the lower sliding mechanism are fixedly connected to the two connecting rods respectively, and the upper sliding mechanism and the lower sliding mechanism always contact the workpiece; the position and the movement track of the polishing mechanism can be adjusted according to the surface shape change of the variable-diameter rotary workpiece and the welding seam in real time, so that efficient and accurate self-adapting polishing is realized.

Description

A method and apparatus for adaptive grinding of variable diameter rotary surfaces and welds Technical Field

[0001] This invention relates to an adaptive grinding method and apparatus for variable diameter rotary surfaces and welds, belonging to the field of adaptive force-controlled grinding technology. Background Technology

[0002] In the construction machinery industry, rotating curved surface components are widely used in various mechanical equipment, such as rollers, hydraulic components, and connectors. These parts may develop irregular shapes, deformations, or rough surfaces during long-term use or manufacturing processes, affecting their normal operation. Therefore, efficient and precise grinding of these rotating parts is particularly important.

[0003] In the construction machinery industry, the grinding process mainly relies on manual operation or pre-programmed mechanical devices. Manual grinding is labor-intensive and inefficient in engineering applications, and it is also difficult to guarantee the consistent quality of the finished products. On the other hand, while pre-programmed mechanical equipment can improve grinding efficiency, it is often not suitable for complex-shaped or deformed mechanical parts, and therefore cannot meet the high standards required for grinding in construction machinery. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an adaptive grinding method and apparatus for variable-diameter rotating surfaces and welds. This method automatically adjusts the grinding intensity according to the specific shape and size of the variable-diameter rotating workpiece, ensuring effective and uniform grinding of irregular surfaces and welds. The apparatus employs a mechanical approach to achieve adaptive grinding, adjusting the position and trajectory of the grinding mechanism in real time based on changes in the surface shape of the variable-diameter rotating workpiece and the weld, thereby achieving efficient and precise adaptive grinding. This design aims to improve grinding efficiency and quality while reducing labor intensity, making it suitable for various engineering machinery production applications.

[0005] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0006] In a first aspect, the present invention provides a method and apparatus for adaptive grinding of variable diameter rotary surfaces and welds, including a base, a bracket mounted on the base, a grinding device, a platform, a support, an adaptive device, and a rocker arm;

[0007] The bracket is vertically mounted on the base, the rocker arm is movably connected to both sides of the lower end of the bracket, the support is welded to the middle part of the rocker arm, and the platform is movably connected to the support.

[0008] The grinding device is located in the center above the platform and is in contact with the workpiece for grinding the workpiece surface and weld seams.

[0009] The adaptive device includes a connecting plate, two connecting rods, an upper sliding mechanism, and a lower sliding mechanism. The connecting plate is fixedly connected to the platform, and the two connecting rods are fixedly connected to the upper and lower ends of the connecting plate. The upper sliding mechanism and the lower sliding mechanism are respectively fixedly connected to the two connecting rods, and the upper sliding mechanism and the lower sliding mechanism are always in contact with the workpiece.

[0010] Furthermore, the support frame is welded to the platform with lifting lugs, and the lifting lugs on the support frame and the lifting lugs on the platform are connected by ropes.

[0011] Furthermore, two cylinders are movably connected to the upper ends of the bracket, and the push rods of the cylinders are fixedly connected to the rocker arm through connecting parts.

[0012] Furthermore, the grinding device includes a bearing seat, a first pulley, and a grinding head. The grinding device is fixed to the center of the platform above the bearing seat with bolts. The first pulley is located on the side of the grinding device near the support, and the grinding head is located on the other side to contact the workpiece and grind the workpiece surface and weld.

[0013] Furthermore, a motor is bolted to the bottom of the platform, and a second pulley is provided at the end of the motor shaft. The second pulley and the first pulley are driven by a belt.

[0014] Furthermore, the grinding head is positioned between the upper sliding mechanism and the lower sliding mechanism.

[0015] Furthermore, the upper sliding mechanism and the lower sliding mechanism have an arc-shaped structure, and the concave surface of the arc-shaped structure contacts the workpiece.

[0016] Furthermore, the connecting plate is fixed to the upper and lower sides of the platform by fasteners, and the connecting plate is adjacent to one side of the grinding device. The two ends of the connecting plate are bent toward one side of the grinding device, so that the two connecting rods connected to the connecting plate are located on the same vertical plane as the grinding device.

[0017] Secondly, the present invention provides a grinding method for an adaptive grinding device for variable diameter rotary surfaces and welds according to any one of the foregoing claims, comprising:

[0018] During processing, the workpiece always rotates counterclockwise, the cylinder generates a certain thrust, pushes the rocker arm forward, and the rocker arm drives the entire platform to approach the workpiece;

[0019] When the radius of the part of the workpiece close to the upper sliding mechanism increases, the upper sliding mechanism will be pushed to the left by the workpiece, the platform will rotate counterclockwise around the support axis and tilt, and the lower sliding mechanism will press against the workpiece to the right.

[0020] At this point, the lower sliding mechanism is positioned further forward than the upper sliding mechanism, and the grinding device is also brought to a position further forward than the standard, starting to increase the grinding amount and grinding the part of the workpiece with an increased radius.

[0021] As the workpiece radius gradually returns to normal, the upper sliding mechanism will move to the right to press against the workpiece, the platform will rotate clockwise around the support axis to return to center, and the grinding device will be driven to move to the left, gradually reducing the amount of grinding.

[0022] Furthermore, the grinding method is applicable to grinding rollers, hydraulic components, and connecting parts in engineering machinery.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0024] 1. This invention provides an adaptive grinding method and apparatus for variable-diameter rotating curved surfaces and welds. It can automatically adjust the grinding intensity according to the specific shape and size of the variable-diameter rotating workpiece, ensuring effective and uniform grinding of irregular surfaces and welds. The apparatus uses a mechanical method to achieve adaptive grinding, adjusting the position and movement trajectory of the grinding mechanism in real time according to changes in the surface shape of the variable-diameter rotating workpiece and the weld, thereby achieving efficient and precise adaptive grinding. This design aims to improve grinding efficiency and quality, reduce labor intensity, and is suitable for various engineering machinery production applications.

[0025] 2. This invention, through the design of an adaptive method and device structure, achieves adaptive grinding of variable-diameter rotary surfaces and welds. This mechanical force-controlled adaptive mechanism improves the efficiency and quality of the grinding process while meeting the precision requirements of workpiece processing. The device, through its unique adaptive mechanism, can automatically adjust the grinding position and force to adapt to changes in the workpiece, improving its ability to handle complex surfaces. Furthermore, the device's structure simplifies the operation process, reduces technical requirements, and has low maintenance costs, providing users with an economical and efficient grinding equipment option and offering the industry a more efficient and user-friendly solution for grinding variable-diameter rotary surfaces. Attached Figure Description

[0026] Figure 1 is a three-dimensional schematic diagram of an adaptive grinding device for a variable diameter rotary surface and weld provided in an embodiment of the present invention.

[0027] Figure 2 is a schematic diagram of the variable diameter rotary surface and weld grinding device provided in an embodiment of the present invention.

[0028] In the diagram: 1. Base; 2. Bracket; 3. Grinding device; 31. Shaft seat; 32. First pulley; 33. Grinding head; 4. Platform; 5. Lifting lug; 6. Workpiece; 7. Support; 8. Adaptive device; 81. Connecting plate; 82. Connecting rod; 83. Upper sliding mechanism; 84. Lower sliding mechanism; 9. Motor; 91. Second pulley; 10. Rocker arm; 11. Cylinder; 12. Fixing component; 13. Connecting component. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example 1

[0033] Referring to the schematic diagrams in Figures 1 and 2, this embodiment introduces a method and apparatus for adaptive grinding of variable diameter rotary surfaces and welds, including: a base 1, a support 2, a grinding device 3, a platform 4, a lifting lug 5, a workpiece 6, a support 7, an adaptive device 8, a motor 9, a rocker arm 10, a cylinder 11, a fixing component 12, and a connecting component 13.

[0034] The positions and connections of the above structures are as follows:

[0035] The entire assembly is mounted on base 1. The rocker arm 10 is movably connected to both sides of the lower end of the bracket 2. The support 7 is welded to the middle part of the rocker arm 10. The platform 4 is movably connected to the support 7. When working, the platform 4 can rotate around the axis of the support 7 and can also move horizontally through the rocker arm 10 to adjust the position of the entire device relative to the workpiece.

[0036] Without workpiece 6, platform 4 will tilt due to its own weight. Lifting lugs 5 are welded between frame 2 and platform 4, and ropes are threaded through the lifting lugs to limit the maximum tilt angle of platform 4.

[0037] The grinding device 3 is bolted to the center of the platform 4 via the bearing 31. A first pulley 32 is provided on one side near the support 2, and a grinding head 33 is provided on the other side to contact the workpiece 6 and grind the workpiece surface and weld.

[0038] Two cylinders 11 are movably connected to the upper two ends of the bracket 2. The cylinder push rod is fixed to the rocker arm 10 through the connector 13. The cylinder generates thrust during processing, which pushes the rocker arm 10 to move the platform 4 and the grinding device 3 closer to the workpiece for easy grinding.

[0039] The motor 9 is fixed to the bottom of the platform 4 by bolts. The shaft end of the motor 9 is provided with a second pulley 91. The second pulley 91 and the first pulley 32 are driven by a belt to provide power to the grinding device 3.

[0040] The adaptive device 8 includes a connecting plate 81, connecting rods 82, an upper sliding mechanism 83, and a lower sliding mechanism 84. The connecting plate is fixed to the platform 4 by a fixing member 12. The two connecting rods 82 are fixed to the upper and lower sides of the plate 81. The upper sliding mechanism 83 and the lower sliding mechanism 84 are respectively fixed to the two connecting rods 82. The upper sliding mechanism 83 and the lower sliding mechanism 84 are always in contact with the workpiece 6. When the surface of the workpiece 6 changes, the sliding mechanism can move. The upper sliding mechanism 83 and the lower sliding mechanism 84 always move in opposite directions. The movement in opposite directions can drive the platform fixed to the connecting plate to tilt or return to the center. The grinding amount of the grinding head can be increased or decreased adaptively according to the shape of the workpiece surface.

[0041] The grinding head 33 is positioned between the upper sliding mechanism 83 and the lower sliding mechanism 84. At this time, the workpiece 6 that is tangent to the front end of the grinding head 33, the upper sliding mechanism 83, and the lower sliding mechanism 84 is the standard workpiece.

[0042] The working process and principle of the technical solution:

[0043] During processing, the workpiece 6 always rotates counterclockwise, and the cylinder 11 generates a certain thrust, pushing the rocker arm 10 forward. The rocker arm 10 drives the platform 4 to move closer to the workpiece.

[0044] When the radius of the part of the workpiece 6 that is close to the upper sliding mechanism 83 increases, the upper sliding mechanism 83 will be pushed to the left by the workpiece 6, the platform 4 will rotate counterclockwise around the axis of the support 7 and tilt, and the lower sliding mechanism 84 will press against the workpiece 6 to the right.

[0045] The lower sliding mechanism 84 is positioned further forward than the upper sliding mechanism 83. At this time, the grinding device 3 is also brought to a position further forward than the standard, and the grinding amount begins to increase, grinding the part of the workpiece 6 with an increased radius.

[0046] When the radius of workpiece 6 gradually returns to normal, the upper sliding mechanism 83 will press against workpiece 6 to the right, the platform 4 will rotate clockwise around the axis of support 7 to return to center, and the grinding device 3 will be driven to move to the left to gradually reduce the amount of grinding.

[0047] Force control was achieved through mechanical means, maintaining the quality and consistency of the workpiece.

[0048] Example 2

[0049] This embodiment provides a grinding method for the adaptive grinding device for variable diameter rotary surfaces and welds according to any one of Embodiment 1, including:

[0050] During processing, the workpiece 6 always rotates counterclockwise, the cylinder 11 generates a certain thrust, pushes the rocker arm 10 forward, and the rocker arm 10 drives the platform 4 to move closer to the workpiece 6.

[0051] When the radius of the part of the workpiece 6 that is close to the upper sliding mechanism 83 increases, the upper sliding mechanism 83 will be pushed to the left by the workpiece 6, the platform 4 will rotate counterclockwise around the axis of the support 7 and tilt, and the lower sliding mechanism 84 will press against the workpiece 6 to the right.

[0052] At this time, the lower sliding mechanism 84 is positioned further forward than the upper sliding mechanism 83, and the grinding device 3 is also brought to a position further forward than the standard, and begins to increase the grinding amount, grinding the part of the workpiece 6 with an increased radius.

[0053] When the radius of workpiece 6 gradually returns to normal, the upper sliding mechanism 83 will press against workpiece 6 to the right, the platform 4 will rotate clockwise around the axis of support 7 to return to center, and the grinding device 3 will be driven to move to the left to gradually reduce the amount of grinding.

[0054] The grinding method described herein is applicable to the grinding of rollers, hydraulic components, and connectors in engineering machinery.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A variable-diameter rotary surface and weld seam adaptive grinding device, characterized in that, The system includes a base (1), a bracket (2) mounted on the base (1), a grinding device (3), a platform (4), a support (7), an adaptive device (8), and a rocker arm (10). The bracket (2) is vertically mounted on the base (1), the rocker arm (10) is movably connected to both sides of the lower end of the bracket (2), the support (7) is welded to the middle part of the rocker arm (10), and the platform (4) is movably connected to the support (7). The grinding device (3) is located in the center above the platform (4) and contacts the workpiece (6) for grinding the surface of the workpiece and the weld seam. The adaptive device (8) includes a connecting plate (81), two connecting rods (82), an upper sliding mechanism (83), and a lower sliding mechanism (84). The connecting plate (81) is fixedly connected to the platform (4), and the two connecting rods... (82) The upper sliding mechanism (83) and the lower sliding mechanism (84) are fixedly connected to the upper and lower ends of the connecting plate (81). The upper sliding mechanism (83) and the lower sliding mechanism (84) are fixedly connected to the two connecting rods (82). The upper sliding mechanism (83) and the lower sliding mechanism (84) are always in contact with the workpiece (6). The upper sliding mechanism (83) and the lower sliding mechanism (84) are arc-shaped, and the concave surface of the arc-shaped structure is in contact with the workpiece (6). The connecting plate (81) is set on the upper and lower sides of the platform (4) by the fixing part (12). The connecting plate (81) is adjacent to one side of the grinding device (3). The two ends of the connecting plate (81) are bent toward one side of the grinding device (3), so that the two connecting rods (82) connected to the connecting plate (81) and the grinding device (3) are located on the same vertical plane.

2. The adaptive grinding device for variable diameter rotary surfaces and welds according to claim 1, characterized in that, The support (2) and the platform (4) are welded with lifting lugs (5), and the lifting lugs on the support (2) and the platform (4) are connected by ropes.

3. The adaptive grinding device for variable diameter rotary surfaces and welds according to claim 1, characterized in that, The bracket (2) has two cylinders (11) movably connected to its upper two ends. The push rod of the cylinder (11) is fixedly connected to the rocker arm (10) through the connector (13).

4. The adaptive grinding device for variable diameter rotary surfaces and welds according to claim 1, characterized in that, The grinding device (3) includes a bearing seat (31), a first pulley (32), and a grinding head (33). The grinding device (3) is fixed to the center above the platform (4) by bolts through the bearing seat (31). The grinding device (3) has a first pulley (32) on one side near the support (2) and a grinding head (33) on the other side to contact the workpiece (6) and grind the surface of the workpiece and the weld.

5. The adaptive grinding device for variable diameter rotary surfaces and welds according to claim 4, characterized in that, A motor (9) is fixedly connected to the platform (4) by bolts. A second pulley (91) is provided at the shaft end of the motor (9). The second pulley (91) and the first pulley (32) are driven by a belt.

6. The adaptive grinding device for variable diameter rotary surfaces and welds according to claim 4, characterized in that, The grinding head (33) is positioned between the upper sliding mechanism (83) and the lower sliding mechanism (84).

7. A grinding method for an adaptive grinding device for variable diameter rotary surfaces and welds according to any one of claims 1-6, characterized in that, During processing, the workpiece (6) rotates counterclockwise, the cylinder (11) generates a certain thrust, pushing the rocker arm (10) forward, and the rocker arm (10) drives the platform (4) to move closer to the workpiece (6); when the radius of the part of the workpiece (6) that is close to the upper sliding mechanism (83) increases, the upper sliding mechanism (83) will be pushed to the left by the workpiece (6), the platform (4) will rotate counterclockwise around the axis of the support (7) and tilt, and the lower sliding mechanism (84) will press against the workpiece (6) to the right; at this time, the lower sliding mechanism (84) is in a more forward position than the upper sliding mechanism (83), and the grinding device (3) is also brought to a position that is further forward than the standard, and the grinding amount begins to increase, grinding the part of the workpiece (6) whose radius has increased; when the radius of the workpiece (6) gradually returns to normal, the upper sliding mechanism (83) will press against the workpiece (6) to the right, the platform (4) will rotate clockwise around the axis of the support (7) and return to the center, and the grinding device (3) will be driven to move to the left, gradually reducing the grinding amount.

8. The grinding method of the adaptive grinding device for variable diameter rotary surfaces and welds according to claim 7, characterized in that, The grinding method described herein is applicable to the grinding of rollers, hydraulic components, and connectors in engineering machinery.

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