Automatic fitting and polishing device for irregular large-curvature curved surface
Through the inner and outer connecting sleeve structure connected by double-axis shoulder bolts, the fitting problem in grinding of irregular large curvature surfaces is solved, and the 360° compensation function and efficient grinding effect are achieved, adapting to surfaces with different curvatures, improving grinding efficiency and adaptability.
Patent Information
- Application Number
- CN202420098976.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-16
AI Technical Summary
The existing automated grinding technology is difficult to effectively deal with irregular large curvature surfaces, resulting in the problem of angle deviation between the grinding disc and the surface of the grinding workpiece and the inability to fit and compensate.
The inner and outer connection sleeve structure is adopted with a dual-axis shoulder bolt connection. The swing connection of the inner and outer shaft shoulder bolts achieves a large-scale compensation function of 360°, which increases the grinding contact area, adapts to surfaces with different curvatures, and improves the swing smoothness of the bearing and the bar.
It achieves a perfect fit for irregular large curvature surfaces, improves grinding efficiency and adaptability, has fast reaction and short compensation time, and can compensate distances of 0 to 20°.
Smart Images
Figure CN222327669U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a grinding device, in particular to an automatic laminating and grinding device for irregular large-curvature curved surfaces. Background Art
[0002] With the development of intelligent manufacturing industry, the demand for automation in the automated grinding industry is becoming increasingly urgent. When doing automated polishing and grinding, in order to ensure the high-quality completion of continuous contact operations, it is necessary not only to realize the force control of the tool or workpiece along the normal direction of the contact surface and maintain a constant contact force throughout the operation, but also to realize motion control in other directions, that is, force-position mixed control. At present, most of the constant force grinding schemes adopted are single grinding head schemes using a single force-controlled end effector, one end of the actuator is connected to the machine tool or robot, and the other end is connected to the grinding tool. This scheme has been proven to be feasible in practical applications, but due to the consistency of the workpiece being polished itself and the different processing techniques, there are various unpredictable deviations, so there is always an angle deviation between the grinding disc and the surface of the workpiece being polished, and due to the different curvatures of the surfaces of different workpieces, there is a situation where large curvatures cannot be fitted and compensated. Therefore, it has become an urgent problem for technical personnel in this field to develop an automatic fitting and grinding device for irregular large curvature surfaces, which adopts double shoulder bolts to connect the inner and outer connecting sleeves to achieve vertical fitting of large curvature surfaces, increase its actual grinding contact area, and improve its grinding efficiency when grinding in irregular large curvature areas. Summary of the invention
[0003] The utility model is to solve the above-mentioned shortcomings and provides an automatic fitting and grinding device for irregular large curvature surfaces.
[0004] The above-mentioned purpose of the utility model is achieved through the following technical scheme: an automatic fitting and grinding device for irregular large curvature surfaces, including a grinder, an inner connecting sleeve and an outer connecting sleeve, the grinder is swingably connected to the inner connecting sleeve through two inner shoulder bolts distributed on the same straight line, the inner connecting sleeve is swingably connected to the outer connecting sleeve through two outer shoulder bolts distributed on the same straight line, the connecting line of the two inner shoulder bolts is perpendicular to the connecting line of the two outer shoulder bolts, and the intersection of the two connecting lines is the midpoint of the two connecting lines.
[0005] Furthermore, the side wall of the mill is provided with an inner screw hole connected to the inner shoulder bolt, the side wall of the inner connecting sleeve is provided with an outer screw hole connected to the outer shoulder bolt, and an inner shaft hole matching with the inner shoulder bolt, the outer connecting sleeve is provided with an outer shaft hole matching with the outer shoulder bolt, and the inner shoulder bolt and the outer shoulder bolt are provided with a smooth rod portion matching with the inner shaft hole and the outer shaft hole respectively.
[0006] Furthermore, bearings are provided between the inner shaft hole and the polished rod portion of the inner shoulder bolt, and between the outer shaft hole and the polished rod portion of the outer shoulder bolt.
[0007] Furthermore, the inner connecting sleeve and the outer connecting sleeve are both circular in structure.
[0008] Furthermore, the external connecting sleeve connects the grinding tool and the execution end of the robot arm, and a flange is provided on the upper end of the external connecting sleeve, which can be changed according to different types of robot arms to adapt to various projects.
[0009] Furthermore, the mill is a common pneumatic mill.
[0010] Compared with the prior art, the utility model has the following advantages: the irregular curved surface automatic fitting and grinding device of the utility model can adapt to different curved surfaces, has a short compensation time, a fast response speed, has a 360° wide range compensation function, and can compensate a distance of 0 to 20°. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the exploded structure of the utility model.
[0012] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from the top side angle.
[0013] Figure 3 It is a three-dimensional structural schematic diagram of the utility model from the bottom side angle.
[0014] Figure 4 It is a top view of the utility model.
[0015] Figure 5 yes Figure 4 Cross-sectional view at AA in the middle.
[0016] Figure 6 yes Figure 4 Cross-sectional view at BB in the middle. DETAILED DESCRIPTION
[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0018] like Figures 1 to 6 As shown, an automatic laminating and grinding device for irregular large curvature surfaces comprises a grinder 1, an inner connecting sleeve 2 and an outer connecting sleeve 3, wherein the inner connecting sleeve 2 and the outer connecting sleeve 3 are both circular structures, the outer connecting sleeve 3 is connected to the grinding tool and the execution end of the robot arm, and a flange 301 is provided on the upper end of the outer connecting sleeve 3, which can be changed according to different types of robot arms to adapt to various projects. The grinder 1 is an ordinary pneumatic grinder 1.
[0019] The grinding mill 1 is swingably connected to the inner connecting sleeve 2 via two inner shoulder bolts 4 distributed on the same straight line, and the inner connecting sleeve 2 is swingably connected to the outer connecting sleeve 3 via two outer shoulder bolts 5 distributed on the same straight line. The connecting line of the two inner shoulder bolts 4 is perpendicular to the connecting line of the two outer shoulder bolts 5, and the intersection of the two connecting lines is the midpoint of the two connecting lines.
[0020] The side wall of the mill 1 is provided with an inner screw hole 101 connected to the inner shoulder bolt 4, the side wall of the inner connecting sleeve 2 is provided with an outer screw hole 201 connected to the outer shoulder bolt 5, and an inner shaft hole 202 matched with the inner shoulder bolt 4, the outer connecting sleeve 3 is provided with an outer shaft hole 302 matched with the outer shoulder bolt 5, and the inner shoulder bolt 4 and the outer shoulder bolt 5 are provided with a smooth rod part respectively matched with the inner shaft hole 202 and the outer shaft hole 302. In order to further enhance the smoothness of the 360-degree swing, a bearing can be provided between the inner shaft hole 202 and the smooth rod part of the inner shoulder bolt 4, and between the outer shaft hole 302 and the smooth rod part of the outer shoulder bolt 5 (the bearing is not provided in this embodiment, and can be provided according to actual needs in other embodiments).
[0021] In the present invention, the inner connecting sleeve 2 is used to connect the outer connecting sleeve 3 and the grinding machine 1, and the swing is realized by two sets of shoulder bolts to compensate for the angle. When the robot arm is connected to the flange 301 of the outer connecting sleeve 3, the inner connecting sleeve 2, the outer connecting sleeve 3 and the two sets of shoulder bolts can be used to control the rotation of 360°, so as to vertically fit the large curved surface. When the grinding machine 1 is not in contact with the surface of the workpiece to be ground, the grinding machine 1 will return to the normal state due to its own gravity. When the grinding machine 1 is in contact with the surface of the workpiece to be ground, the grinding machine 1 will achieve perfect fit with the working surface to be ground under the action of the inner connecting sleeve 2, the outer connecting sleeve 3 and the two sets of shoulder bolts.
[0022] The following are the technical parameters of this utility model:
[0023] Deadweight 3.5kg Force control range 100N X-axis torque 20Nm Y-axis torque 20Nm Z-axis torque 15Nm Protection level IP65 Surface compensation angle 0～20° Maximum grinding speed 12000rpm Gas pressure Max.7bar(oil-free and water-free) Air consumption 5~10 l / min Operating temperature +5～+45℃
[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An automatic laminating and polishing device for irregular large curvature surfaces, characterized in that: It includes a grinding mill, an inner connecting sleeve and an outer connecting sleeve. The grinding mill is swingably connected to the inner connecting sleeve via two inner shoulder bolts distributed on the same straight line, and the inner connecting sleeve is swingably connected to the outer connecting sleeve via two outer shoulder bolts distributed on the same straight line. The connecting line of the two inner shoulder bolts is perpendicular to the connecting line of the two outer shoulder bolts, and the intersection of the two connecting lines is the midpoint of the two connecting lines.
2. The automatic laminating and polishing device for irregular large curvature surfaces according to claim 1, characterized in that: The side wall of the mill is provided with an inner screw hole connected to the inner shoulder bolt, the side wall of the inner connecting sleeve is provided with an outer screw hole connected to the outer shoulder bolt, and an inner shaft hole matching with the inner shoulder bolt, the outer connecting sleeve is provided with an outer shaft hole matching with the outer shoulder bolt, and the inner shoulder bolt and the outer shoulder bolt are provided with a smooth rod portion matching with the inner shaft hole and the outer shaft hole respectively.
3. The automatic laminating and polishing device for irregular large curvature surfaces according to claim 2, characterized in that: Bearings are arranged between the inner shaft hole and the polished rod portion of the inner shaft shoulder bolt, and between the outer shaft hole and the polished rod portion of the outer shaft shoulder bolt.
4. The automatic laminating and polishing device for irregular large curvature surfaces according to claim 1, characterized in that: The inner connecting sleeve and the outer connecting sleeve are both circular in structure.
5. The automatic laminating and polishing device for irregular large curvature surfaces according to claim 1, characterized in that: The outer connecting sleeve is connected to the grinding tool and the execution end of the robot arm, and a flange is provided on the upper end of the outer connecting sleeve.
6. The automatic laminating and polishing device for irregular large curvature surfaces according to claim 1, characterized in that: The mill is a pneumatic mill.