Double-station contact curvature-adjustable flexible floating curved surface abrasive belt grinding device

Abstract

The duplex position contact curvature adjustable flexible floating curved surface abrasive belt grinding device disclosed by the application comprises a rack, grinding mechanisms, deviation rectifying mechanisms and tensioning mechanisms are arranged on opposite sides of the rack respectively, the grinding mechanisms, the deviation rectifying mechanisms and the tensioning mechanisms are arranged on the inner side of the abrasive belt and support the abrasive belt, a deviation rectifying sensor is arranged between the grinding mechanisms and the deviation rectifying mechanisms, and the deviation rectifying sensor is connected with the rack; a servo motor is arranged at the bottom of the rack, a speed reduction mechanism is connected with the output shaft of the servo motor, drive wheels are arranged on opposite sides of the speed reduction mechanism, the drive wheels are located on the inner side of the abrasive belt, and the drive wheels drive the abrasive belt to perform grinding work. The application solves the problem that it is difficult to directly adjust the machining process of different thickness curved surface parts in the existing abrasive belt grinding technology.

Description

Technical Field

[0001] This invention belongs to the field of advanced manufacturing and processing technology for curved surfaces, specifically relating to a flexible floating curved surface abrasive belt grinding device with adjustable contact curvature at two workstations. Background Technology

[0002] With the progress and development of automobile manufacturing, aerospace and modern manufacturing, the use of complex-shaped metal and non-metal materials, such as titanium alloys, high-temperature alloys and engineering ceramics, which are difficult to machine, is increasing. This places higher demands on the surface processing quality, efficiency, integrity and smoothness of parts. As a flexible processing technology, belt grinding is widely used in the precision machining of complex-shaped parts because it has the dual effects of grinding and polishing.

[0003] For example, prior art with application number 201911161192.3 discloses a belt grinding device with active and passive compliance mechanism switching. It includes a mounting base for mounting a grinding head assembly. The mounting base has an active compliance mechanism that can move axially to adjust the pressure between the grinding head and the workpiece. A passive compliance mechanism is provided between the active compliance mechanism and the grinding head assembly to allow for movable connection between the active compliance mechanism and the grinding head assembly. It also includes a locking mechanism for fixing the active compliance mechanism and the grinding head assembly. When active compliance is required, the locking mechanism fixes the active compliance mechanism and the grinding head assembly, thereby allowing the active compliance mechanism to control the grinding head assembly and switch between passive and active compliance.

[0004] Prior art, including application number 201910100036.X, discloses a belt grinding device and its usage method that combines pressure and tension control. The device includes a contact wheel assembly, a first cylinder, a drive wheel assembly, a tension wheel assembly, a second cylinder, a second idler wheel assembly, and a grinding belt. This invention controls the contact wheel assembly and the tension wheel assembly to complete corresponding displacements, eliminating the influence of changes in normal grinding pressure on the tension, maintaining a constant grinding force during the grinding process, thereby effectively reducing vibration during grinding and ensuring the quality of the machined surface and the lifespan of the grinding belt.

[0005] However, none of the above-mentioned existing technologies mention grinding methods and mechanisms that can achieve adjustable contact curvature and active compliance during the processing of abrasive belt grinding. At the same time, there is little research on the control of abrasive belt grinding process in China. Traditional methods usually adjust the grinding process offline by optimizing processing parameters and monitoring grinding force, which makes it difficult to control the actual grinding process in real time. Summary of the Invention

[0006] The purpose of this invention is to provide a flexible floating surface abrasive belt grinding device with adjustable contact curvature in two stations, which solves the problem in the prior art that it is difficult to directly adjust the processing of curved surface parts of different thicknesses in abrasive belt grinding.

[0007] The technical solution adopted in this invention is a flexible floating curved surface abrasive belt grinding device with adjustable contact curvature at two workstations, including a frame. A grinding mechanism, a correction mechanism, and a tensioning mechanism are respectively arranged on opposite sides of the frame. The grinding mechanism, correction mechanism, and tensioning mechanism are located inside the abrasive belt and support the abrasive belt. A correction sensor is arranged between the grinding mechanism and the correction mechanism and is connected to the frame.

[0008] A servo motor is installed at the bottom of the frame. The output shaft of the servo motor is connected to a reduction mechanism. Drive wheels are installed on opposite sides of the reduction mechanism. The drive wheels are located inside the sanding belt and drive the sanding belt to perform grinding operations.

[0009] The invention is further characterized in that,

[0010] The frame includes a base plate, and a pair of parallel side plates are fixedly connected to the upper end of the base plate. The side plates are perpendicular to the base plate. The top of the pair of side plates are connected by a top cover. An upper bracket and a lower bracket are fixedly connected to the outer side of the side plates near the upper and lower ends, respectively.

[0011] A baffle is installed between the side panels near the upper end, which connects and fixes the two side panels. A support plate is also installed on the outside of the side panels.

[0012] The grinding mechanism includes a dual-axis cylinder a, which is fixedly connected to the upper bracket. The output end of the dual-axis cylinder a is connected to a contact wheel seat, which is U-shaped. A contact wheel is movably connected in the middle of the contact wheel seat. The contact wheel is located inside the sanding belt and abuts against the sanding belt.

[0013] Several channels are opened radially on the contact wheel, and slider a passes through the channels. Slider a is movably connected to the contact wheel. A single-axis cylinder is also provided on one side of the contact wheel seat. The output end of the single-axis cylinder is connected to slider a. The extension and retraction movement of the single-axis cylinder drives slider a to slide relative to the contact wheel, thereby changing the maximum outer diameter of the contact wheel.

[0014] The end of slider a away from the single-axis cylinder is arc-shaped, and the arc is the same as the arc of the contact wheel.

[0015] A connecting rod is connected to one end of slider a near the single-axis cylinder. The connecting rod is hinged to the output end of the single-axis cylinder through a cylinder connector.

[0016] The correction mechanism includes a connecting plate fixedly connected to the support plate. On one side of the connecting plate, there are screw support seat a and screw support seat b. A screw is passed between screw support seat a and screw support seat b. A nut seat is movably connected to the screw through a thread. One end of the screw is connected to a drive motor through a coupling.

[0017] A guide rail is provided on the other side of the connecting plate, and a slider b is movably connected to the guide rail; a straightening wheel seat is also provided on the connecting plate, one side of the straightening wheel seat is movably connected to the slider b, and the other side is movably connected to the nut seat. A straightening wheel is provided between the straightening wheel seats, and a straightening wheel shaft passes through the center of the straightening wheel shaft. Both ends of the straightening wheel shaft are movably connected to the straightening wheel seat. The straightening wheel is located inside the sanding belt and abuts against the sanding belt.

[0018] The angle between the extension direction of the lead screw and the extension direction of the guide rail is less than °;

[0019] When the nut seat moves relative to the lead screw, the slider b moves on the guide rail via the correction wheel seat, thereby adjusting the angle of the correction wheel.

[0020] The servo motor is fixedly connected to the base plate by bolts. The reduction mechanism includes a reducer housing, which is mounted on the base plate. The output shaft of the servo motor is connected to a small taper wheel shaft via a coupling. The small taper wheel shaft passes through the inside of the reducer housing, and a small bevel gear is provided at one end of the small taper wheel shaft inside the reducer housing. The small bevel gear meshes with a large bevel gear, and the large bevel gear is sleeved on the outside of the large taper wheel shaft.

[0021] The axial direction of the large taper wheel shaft is perpendicular to the axial direction of the small taper wheel shaft, and both ends of the large taper wheel shaft pass through the reducer housing and are connected to the drive wheels respectively.

[0022] A bearing b is provided where the small taper wheel shaft passes through the reducer housing. The small taper wheel shaft passes through the inside of the bearing b, and a main shaft cover is provided in the reducer housing relative to the bearing b.

[0023] Bearing a is provided at the position where the reducer housing passes through the large tapered wheel shaft. The large tapered wheel shaft passes through the inside of bearing a, and an oil-sealing felt cover is provided at the position of the reducer housing relative to bearing a.

[0024] The reducer housing is also equipped with oil drain bolts.

[0025] The tensioning mechanism includes a dual-axis cylinder b fixed to the lower support. The output shaft of the dual-axis cylinder b is connected to a tension wheel seat. The tension wheel seat is U-shaped. A tension wheel is movably connected to the inner side of the tension wheel seat. The tension wheel is located inside the sanding belt and abuts against the sanding belt.

[0026] The beneficial effects of this invention are:

[0027] (1) The grinding mechanism of the flexible floating surface abrasive belt grinding device with adjustable contact curvature of the dual-station contact mechanism of the present invention achieves adjustment of the maximum outer diameter of the contact wheel through the cooperation between each cylinder, realizing flexible grinding while achieving adjustable contact curvature, which can adapt to parts with different curved surface shapes and is used for the removal and precision polishing of complex curved surface materials; it can enhance motion stability and control the grinding process of workpieces with complex curved surfaces and diverse processing requirements, thereby achieving the desired grinding processing quality.

[0028] (2) The flexible floating surface abrasive belt grinding device with adjustable contact curvature of the dual-station contact of the present invention is equipped with abrasive belts on both sides of the frame, and uses abrasive belts of different grit sizes to achieve precision polishing of complex curved surfaces, thereby improving grinding efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the flexible floating curved surface abrasive belt grinding device with adjustable contact curvature in dual-station configuration of the present invention.

[0030] Figure 2 This is a schematic diagram of the grinding mechanism in the dual-station adjustable contact curvature flexible floating curved surface abrasive belt grinding device of the present invention.

[0031] Figure 3 This is a schematic diagram of the single-axis cylinder extension in the grinding mechanism;

[0032] Figure 4 This is a schematic diagram of the correction mechanism in the dual-station adjustable contact curvature flexible floating curved surface abrasive belt grinding device of the present invention.

[0033] Figure 5 This is a schematic diagram of the deceleration mechanism in the dual-station adjustable contact curvature flexible floating curved surface abrasive belt grinding device of the present invention.

[0034] Figure 6 This is a schematic diagram of the frame structure in the dual-station adjustable contact curvature flexible floating curved surface abrasive belt grinding device of the present invention;

[0035] Figure 7 This is a schematic diagram of the tensioning mechanism in the dual-station flexible floating curved surface abrasive belt grinding device with adjustable contact curvature of the present invention.

[0036] In the figure, 1. Grinding mechanism, 1-1. Dual-axis cylinder a, 1-2. Slider a, 1-3. Contact wheel, 1-4. Cylinder connector, 1-5. Single-axis cylinder, 1-6. Connecting rod, 1-7. Contact wheel seat;

[0037] 2. Correction sensor; 3. Correction mechanism; 3-1. Correction wheel seat; 3-2. Correction wheel shaft; 3-3. Correction wheel; 3-4. Coupling; 3-5. Drive motor; 3-6. Screw support seat a; 3-7. Nut seat; 3-8. Screw; 3-9. Screw support seat b; 3-10. Guide rail; 3-11. Slider b; 3-12. Connecting plate;

[0038] 4. Sanding belt; 5. Reduction mechanism; 5-1. Drive wheel; 5-2. Oil-sealing felt cover; 5-3. Bearing a; 5-4. Small taper gear shaft; 5-5. Main shaft cover; 5-6. Bearing b; 5-7. Small bevel gear; 5-8. Large taper gear shaft; 5-9. Large bevel gear; 5-10. Oil drain bolt; 5-11. Reducer housing;

[0039] 6. Frame, 6-1. Upper support, 6-2. Top cover, 6-3. Support plate, 6-4. Baffle, 6-5. Base plate, 6-6. Side plate, 6-7. Lower support;

[0040] 7. Servo motor, 8. Tensioning mechanism, 8-1. Dual-axis cylinder b, 8-2. Tensioning wheel seat, 8-3. Tensioning wheel. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] like Figure 1 As shown, the present invention discloses a flexible floating curved surface abrasive belt grinding device with adjustable contact curvature for dual-station operation. It includes a frame 6, with a grinding mechanism 1, a correction mechanism 3, and a tensioning mechanism 8 respectively arranged on opposite sides of the frame 6. The grinding mechanism 1, correction mechanism 3, and tensioning mechanism 8 are located inside the abrasive belt 4 and support it. A correction sensor 2 is installed between the grinding mechanism 1 and the correction mechanism 3, and the correction sensor 2 is connected to the frame 6. The correction sensor 2 monitors the grinding process in real time and adjusts the working angle of the correction mechanism 3 based on the grinding monitoring data.

[0044] The grinding mechanism 1, the correction mechanism 3, and the tensioning mechanism 8 on both sides of the present invention have the same structure, which can not only enhance the motion stability of the mechanism and improve the grinding efficiency, but also enable precise processing of workpieces with complex curved surfaces and diverse processing requirements.

[0045] Specifically, such as Figure 6 As shown, the frame 6 includes a base plate 6-5. A pair of parallel side plates 6-6 are fixedly connected to the upper end of the base plate 6-5. The side plates 6-6 are perpendicular to the base plate 6-5. The top of the pair of side plates 6-6 are connected by a top cover 6-2. An upper bracket 6-1 for fixing the grinding mechanism 1 and a lower bracket 6-7 for fixing the tensioning mechanism 8 are fixedly connected to the outer side of the side plates 6-6 near the upper and lower ends, respectively.

[0046] A baffle 6-4 is provided near the upper end between the side plates 6-6. The baffle 6-4 connects and fixes the two side plates 6-6. A support plate 6-3 for fixing the correction mechanism 3 is also provided on the outside of the side plates 6-6.

[0047] A servo motor 7 is installed at the bottom of the frame 6. Specifically, the servo motor 7 is fixedly connected to the base plate 6-5 by bolts. The output shaft of the servo motor 7 is connected to a reduction mechanism 5. The reduction mechanism 5 has drive wheels 5-1 on opposite sides. The drive wheels 5-1 are located inside the sanding belt 4. The sanding belt 4 is driven by the drive wheels 5-1 to perform grinding operations.

[0048] like Figure 2 As shown, the grinding mechanism 1 includes a dual-axis cylinder a1-1, which is fixedly connected to the upper bracket 6-1. The output end of the dual-axis cylinder a1-1 is connected to a contact wheel seat 1-7, which is U-shaped. A contact wheel 1-3 is movably connected in the middle of the contact wheel seat 1-7 through a bearing and a retaining ring. The contact wheel 1-3 is located inside the sanding belt 4 and abuts against the sanding belt 4.

[0049] Several radial channels are formed on the contact wheel 1-3, through which a slider a1-2 passes. The slider a1-2 is movably connected to the contact wheel 1-3. The end of the slider a1-2 away from the single-axis cylinder 1-5 is arc-shaped, and the arc is the same as that of the contact wheel 1-3. This ensures that when the slider a1-2 slides towards the axis of the contact wheel 1-3, the arc surface of the slider a1-2 can fit against the outer arc of the contact wheel 1-3.

[0050] A single-axis cylinder 1-5 is also provided on one side of the contact wheel seat 1-7. The output end of the single-axis cylinder 1-5 is connected to the slider a1-2. Specifically, a connecting rod 1-6 is hinged to the end of the slider a1-2 near the single-axis cylinder 1-5. The connecting rod 1-6 is connected to the output end of the single-axis cylinder 1-5 through a cylinder connector 1-4. Specifically, the cylinder connector 1-4 is connected to the output shaft of the single-axis cylinder 1-5 through a bearing and a retaining ring. The telescopic movement of the single-axis cylinder 1-5 drives the slider a1-2 to slide relative to the contact wheel 1-3, changing the maximum outer diameter of the contact wheel 1-3.

[0051] In this embodiment, six channels are formed on the contact wheels 1-3, and the channels are evenly distributed along the circumference of the contact wheels 1-3. For example... Figure 3 As shown, before grinding, the extension and retraction of the single-axis cylinder 1-5 pushes the cylinder connector 1-4 and connecting rod 1-6 to move, thereby causing the slider a1-2 to move in the channel of the contact wheel 1-3, so as to adjust the size of the contact wheel 1-3 to adapt to workpieces with different curvatures.

[0052] like Figure 7 As shown, the tensioning mechanism 8 includes a dual-axis cylinder b8-1 fixed to the lower bracket 6-7. The output shaft of the dual-axis cylinder b8-1 is connected to a tensioning wheel seat 8-2. The tensioning wheel seat 8-2 is U-shaped. A tensioning wheel 8-3 is movably connected to the inner side of the tensioning wheel seat 8-2. The tensioning wheel 8-3 is located inside the sanding belt 4 and abuts against the sanding belt 4.

[0053] The grinding mechanism 1 of the present invention achieves adjustment of the maximum outer diameter of the contact wheels 1-3 through the cooperation between the cylinders, realizing flexible grinding while adjusting the contact curvature, which can adapt to parts with different curved shapes and is used for the removal and precision polishing of complex curved materials.

[0054] Example 2

[0055] Based on Example 1, such as Figure 4 As shown, the correction mechanism 3 disclosed in this invention includes a connecting plate 3-12 fixedly connected to the support plate 6-3. A lead screw support seat a3-6 and a lead screw support seat b3-7 are provided on one side of the connecting plate 3-12. A lead screw 3-8 passes between the lead screw support seat a3-6 and the lead screw support seat b3-7. A nut seat 3-7 is movably connected to the lead screw 3-8 by a thread. One end of the lead screw 3-8 is connected to a drive motor 3-5 through a coupling 3-4.

[0056] A guide rail 3-10 is provided on the other side of the connecting plate 3-12. A slider b3-11 is movably connected to the guide rail 3-10. The angle between the extension direction of the lead screw 3-8 and the extension direction of the guide rail 3-10 is less than 90°.

[0057] A guide wheel seat 3-1 is also provided on the connecting plate 3-12. One side of the guide wheel seat 3-1 is movably connected to the slider b3-11, and the other side is movably connected to the nut seat 3-7. A guide wheel 3-3 is provided between the guide wheel seats 3-1. A guide wheel shaft 3-2 passes through the axis of the guide wheel 3-3. Both ends of the guide wheel shaft 3-2 are movably connected to the guide wheel seat 3-1. The guide wheel 3-3 is located inside the sanding belt 4 and abuts against the sanding belt 4. When the nut seat 3-7 moves relative to the lead screw 3-8, the slider b3-11 is driven to move on the guide rail 3-10 through the guide wheel seat 3-1, thereby adjusting the angle of the guide wheel 3-3.

[0058] The drive motor 3-5 drives the lead screw 3-8 to rotate, the nut seat 3-7 reciprocates within the lead screw 3-8, and the slider b3-11 reciprocates on the guide rail 3-10. The straightening wheel seat 3-1 rotates under the action of the hinge, that is, the rotation angle of the straightening wheel 3-3 changes, thereby correcting the grinding process, and the straightening sensor 2 monitors it.

[0059] Example 3

[0060] Based on Example 2, such as Figure 5As shown, the deceleration mechanism 5 of the present invention includes a reducer housing 5-11, which is mounted on a base plate 6-5. The output shaft of the servo motor 7 is connected to a small taper wheel shaft 5-4 via a coupling. The small taper wheel shaft 5-4 passes through the interior of the reducer housing 5-11. Specifically, a bearing b5-6 is provided where the small taper wheel shaft 5-4 passes through the reducer housing 5-11. The small taper wheel shaft 5-4 passes through the inner side of the bearing b5-6, and a main shaft cover 5-5 is provided on the reducer housing 5-11 relative to the bearing b5-6.

[0061] Furthermore, a small bevel gear 5-7 is provided at one end of the small bevel shaft 5-4 inside the reducer housing 5-11. The small bevel gear 5-7 meshes with a large bevel gear 5-9. The large bevel gear 5-9 is fixedly sleeved on the outside of the large bevel shaft 5-8 by a key connection. The axial direction of the large bevel shaft 5-8 is perpendicular to the axial direction of the small bevel shaft 5-4. Both ends of the large bevel shaft 5-8 pass through the reducer housing 5-11 and are respectively connected to the drive wheel 5-1.

[0062] Specifically, bearings a5-3 are provided at the positions where the reducer housing 5-11 passes through the large taper wheel shaft 5-8, the large taper wheel shaft 5-8 passes through the inner side of the bearing a5-3, and an oil-sealing felt cover 5-2 is provided at the position of the reducer housing 5-11 relative to the bearing a5-3; an oil drain bolt 5-10 is also provided on the reducer housing 5-11.

[0063] That is, the small taper shaft 5-4 is driven to rotate by the servo motor 7, and the large taper gear 5-9 is driven to rotate by the small bevel gear 5-7. Since the number of teeth of the small bevel gear 5-7 is less than the number of teeth of the large bevel gear 5-9, the rotational speed transmitted by the small taper shaft 5-4 is reduced. The large taper shaft 5-8 rotates under the drive of the large bevel gear 5-9, so that the drive wheel 5-1 rotates.

[0064] The working principle of the dual-station flexible floating curved surface abrasive belt grinding device with adjustable contact curvature of the present invention is as follows:

[0065] First, wrap two sanding belts 4 around the contact wheels 1-3, the correction wheel 3-3, the drive wheel 5-1, and the tension wheel 8-3 on both sides. Adjust the single-axis cylinder 1-5 to push the cylinder connector 1-4, the connecting rod 1-6, and the slider a1-2 to move in sequence so that the maximum outer diameter of the contact wheel 1-3 is at a suitable size.

[0066] Then, adjust the dual-axis cylinder b8-1 to push the tensioning wheel 8-3 into tight contact with the sanding belt 4, so that the sanding belt 4 is in a tensioned state. The servo motor 7 works to make the drive wheels 5-1 on both sides rotate, driving the contact wheel 1-3, the correction wheel 3-3, the tensioning wheel 8-3, and the sanding belt 4 to move synchronously, realizing the main grinding motion in the sanding belt grinding process.

[0067] Furthermore, during the grinding process, flexible grinding is achieved through the adjustment of the dual-axis cylinder a1-1, which is monitored by an external force sensor; the drive motor 3-5 drives the nut seat 3-7 and the slider b3-11 to reciprocate within the lead screw 3-8 and guide rail 3-10. Under the action of the hinge, the rotation angle of the correction wheel 3-3 is adjusted to correct the belt grinding process, which is monitored by the correction sensor 2.

[0068] This invention enables flexible grinding of workpieces with uneven wall thickness, especially for curved and difficult-to-machine materials. It can adapt to changes in workpiece thickness, improve grinding quality, and enhance stability and processing efficiency through identical grinding mechanisms on both sides, resulting in ideal surface finish. Compared with traditional belt grinding devices, this invention has higher flexibility, can adapt to grinding various parts, has a simpler structure, and is more practical.

Claims

1. A flexible floating curved surface abrasive belt grinding device with adjustable contact curvature in two stations, characterized in that, The machine includes a frame (6), on which a grinding mechanism (1), a correction mechanism (3) and a tensioning mechanism (8) are respectively provided on opposite sides. The grinding mechanism (1), the correction mechanism (3) and the tensioning mechanism (8) are located inside the sanding belt (4) and support the sanding belt (4). A correction sensor (2) is provided between the grinding mechanism (1) and the correction mechanism (3), and the correction sensor (2) is connected to the frame (6). The bottom of the frame (6) is provided with a servo motor (7), the output shaft of the servo motor (7) is connected to a reduction mechanism (5), and the reduction mechanism (5) is provided with drive wheels (5-1) on opposite sides. The drive wheels (5-1) are located inside the sanding belt (4), and the sanding belt (4) is driven by the drive wheels (5-1) to perform grinding operations. The grinding mechanism (1) includes a dual-axis cylinder a (1-1), which is fixedly connected to the upper bracket (6-1). The output end of the dual-axis cylinder a (1-1) is connected to a contact wheel seat (1-7), which is U-shaped. A contact wheel (1-3) is movably connected in the middle of the contact wheel seat (1-7). The contact wheel (1-3) is located inside the sanding belt (4) and abuts against the sanding belt (4). The contact wheel (1-3) has several channels along the radial direction, and a slider a (1-2) passes through the channels. The slider a (1-2) is movably connected to the contact wheel (1-3). A single-axis cylinder (1-5) is also provided on one side of the contact wheel seat (1-7). The output end of the single-axis cylinder (1-5) is connected to the slider a (1-2). The extension and retraction movement of the single-axis cylinder (1-5) drives the slider a (1-2) to slide relative to the contact wheel (1-3), thereby changing the maximum outer diameter of the contact wheel (1-3). The slider a (1-2) is connected to a connecting rod (1-6) at one end near the single-axis cylinder (1-5). The connecting rod (1-6) is hinged to the output end of the single-axis cylinder (1-5) through a cylinder connector (1-4). The frame (6) includes a base plate (6-5), and a pair of parallel side plates (6-6) are fixedly connected to the upper end of the base plate (6-5). The side plates (6-6) are perpendicular to the base plate (6-5). The top of the pair of side plates (6-6) are connected by a top cover (6-2). An upper bracket (6-1) and a lower bracket (6-7) are fixedly connected to the outer side of the side plates (6-6) near the upper and lower ends, respectively. A baffle (6-4) is provided between the side plates (6-6) near the upper end. The baffle (6-4) connects and fixes the two side plates (6-6). A support plate (6-3) is also provided on the outside of the side plates (6-6). The correction mechanism (3) includes a connecting plate (3-12) fixedly connected to the support plate (6-3). A lead screw support seat a (3-6) and a lead screw support seat b (3-9) are provided on one side of the connecting plate (3-12). A lead screw (3-8) passes between the lead screw support seat a (3-6) and the lead screw support seat b (3-9). A nut seat (3-7) is movably connected to the lead screw (3-8) by a thread. A drive motor (3-5) is connected to one end of the lead screw (3-8) through a coupling (3-4). A guide rail (3-10) is provided on the other side of the connecting plate (3-12), and a slider b (3-11) is movably connected to the guide rail (3-10); a correction wheel seat (3-1) is also provided on the connecting plate (3-12), one side of the correction wheel seat (3-1) is movably connected to the slider b (3-11), and the other side is movably connected to the nut seat (3-7). A correction wheel (3-3) is provided between the correction wheel seats (3-1), and a correction wheel shaft (3-2) passes through the shaft of the correction wheel (3-3). Both ends of the correction wheel shaft (3-2) are movably connected to the correction wheel seat (3-1). The correction wheel (3-3) is located inside the sanding belt (4) and abuts against the sanding belt (4). The angle between the extension direction of the lead screw (3-8) and the extension direction of the guide rail (3-10) is less than 90°; When the nut seat (3-7) translates relative to the lead screw (3-8), the slider b (3-11) is driven to translate on the guide rail (3-10) through the correction wheel seat (3-1), thereby realizing the angle adjustment of the correction wheel (3-3).

2. The dual-station flexible floating curved surface abrasive belt grinding device with adjustable contact curvature according to claim 1, characterized in that, The end of the slider a (1-2) away from the single-axis cylinder (1-5) is arc-shaped, and the arc is the same as the arc of the contact wheel (1-3).

3. The dual-station flexible floating curved surface abrasive belt grinding device with adjustable contact curvature according to claim 1, characterized in that, The servo motor (7) is fixedly connected to the base plate (6-5) by bolts. The reduction mechanism (5) includes a reducer housing (5-11), which is mounted on the base plate (6-5). The output shaft of the servo motor (7) is connected to a small taper wheel shaft (5-4) via a coupling. The small taper wheel shaft (5-4) passes through the inside of the reducer housing (5-11), and a small bevel gear (5-7) is provided at one end of the small taper wheel shaft (5-4) inside the reducer housing (5-11). The small bevel gear (5-7) meshes with a large bevel gear (5-9), and the large bevel gear (5-9) is sleeved on the outside of the large taper wheel shaft (5-8). The axial direction of the large taper wheel shaft (5-8) is perpendicular to the axial direction of the small taper wheel shaft (5-4). Both ends of the large taper wheel shaft (5-8) pass through the reducer housing (5-11) and are connected to the drive wheel (5-1) respectively.

4. The dual-station flexible floating curved surface abrasive belt grinding device with adjustable contact curvature according to claim 3, characterized in that, The small taper wheel shaft (5-4) is provided with a bearing b (5-6) at the point where it passes through the reducer housing (5-11). The small taper wheel shaft (5-4) passes through the inner side of the bearing b (5-6), and the reducer housing (5-11) is provided with a main shaft cover (5-5) at the point where it is opposite to the bearing b (5-6). The reducer housing (5-11) is provided with bearings a (5-3) at the position where the large taper wheel shaft (5-8) passes through. The large taper wheel shaft (5-8) passes through the inside of bearing a (5-3), and the reducer housing (5-11) is provided with an oil-sealing felt cover (5-2) at the position where the bearing a (5-3) passes through. The reducer housing (5-11) is also equipped with an oil drain bolt (5-10).

5. The dual-station flexible floating curved surface abrasive belt grinding device with adjustable contact curvature according to claim 1, characterized in that, The tensioning mechanism (8) includes a dual-axis cylinder b (8-1) fixed to the lower bracket (6-7). The output shaft of the dual-axis cylinder b (8-1) is connected to a tensioning wheel seat (8-2). The tensioning wheel seat (8-2) is U-shaped. A tensioning wheel (8-3) is movably connected to the inner side of the tensioning wheel seat (8-2). The tensioning wheel (8-3) is located inside the sanding belt (4) and abuts against the sanding belt (4).

Images