Cambered surface polishing device

Abstract

The utility model belongs to the technical field of cylindrical workpiece polishing, and mainly relates to a cambered surface polishing device which is characterized by comprising a support frame, abrasive paper, an arc-shaped mounting plate and a driving piece, the arc-shaped mounting plate is provided with an inner arc surface matched with the outer circumferential surface of a cylindrical workpiece to be polished; the abrasive paper is adhered to the inner arc surface and is used for polishing the outer circumferential surface of the cylindrical workpiece; the arc-shaped mounting plate is assembled on the supporting frame in a swinging mode around the central axis of the cylindrical workpiece where the arc-shaped mounting plate is located. The driving part is fixed to the supporting frame and is in transmission connection with the arc-shaped mounting plate so as to drive the arc-shaped mounting plate to swing back and forth around the central axis of the cylindrical workpiece. The outer circumferential surface of the cylindrical workpiece is in full contact with the abrasive paper on the arc-shaped mounting plate, the arc-shaped mounting plate swings up and down to be in contact friction with the self-rotating cylindrical workpiece, the contact area is larger, the grinding effect is better, and the grinding efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylindrical workpiece grinding, and mainly relates to a cambered surface grinding device. Background Art

[0002] After cutting cylindrical workpieces, tool marks and burrs are often left on the outer circumference of the workpiece, which require sanding to remove. Additionally, after forming processes such as forging, casting, and stamping, the outer circumference of the cylindrical workpiece may have defects such as scale and cracks. Sanding can improve these problems.

[0003] Existing grinding devices, such as the one disclosed in the Chinese patent document with authorization announcement number CN218964976U, are a chip burr removal device for lathe processing. The device includes a lathe body, a transverse hole is formed on one side of the lathe body, a shaft is inserted into the transverse hole, both ends of the shaft are fixedly connected to side rods, one side of the two side rods is fixedly connected to a slide, the outer side of the slide is slidably connected to a slide seat, the top of the slide seat is fixedly connected to an upper support rod, a rocker arm is installed on one side of the slide seat, and a cross bar is fixedly installed on one side of the rocker arm, the upper support rod, and the slide seat, and the outer side of the multiple cross bars are all rotatably connected to a sleeve. Through the design of the slide seat and the rocker arm, the operator adjusts the angle of the slide seat to make the sandpaper rub against the surface of the workpiece, thereby grinding the outer circumference of the cylindrical workpiece to achieve the effect of deburring.

[0004] However, sandpaper is made of paper. When the pressure of the workpiece on the sandpaper is too great, the sandpaper is easy to break. When the pressure of the cylindrical workpiece on the sandpaper is small, the sandpaper does not fully contact the outer circumference of the cylindrical workpiece, resulting in incomplete grinding of the cylindrical workpiece, low friction efficiency, and a waste of time. Utility Model Content

[0005] The utility model provides a curved surface grinding device to solve the problem in the prior art that the grinding device and the cylindrical workpiece are easily disconnected when the contact force is large during grinding, and the sandpaper does not completely grind the outer circumference of the cylindrical workpiece when the force is small, resulting in low friction efficiency.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A curved surface grinding device comprises a support frame, sandpaper, a curved mounting plate and a driving member; the curved mounting plate has an inner curved surface matching the outer circumferential surface of a cylindrical workpiece to be ground; the sandpaper is adhered to the inner curved surface and is used to grind the outer circumferential surface of the cylindrical workpiece; the curved mounting plate is swung around the central axis of the cylindrical workpiece on which it is located and is assembled on the support frame; the driving member is fixed to the support frame and is in transmission connection with the curved mounting plate to drive the curved mounting plate to swing back and forth.

[0008] Beneficial effects: The outer circumferential surface of the cylindrical workpiece is in full contact with the sandpaper on the arc-shaped mounting plate. The arc-shaped mounting plate swings up and down and rotates to contact and rub against the rotating cylindrical workpiece, with a larger contact area, better grinding effect, and higher grinding efficiency.

[0009] Further, the driving member is a motor. A gear-rack transmission mechanism is provided between the motor and the arc-shaped mounting plate. The gear-rack transmission mechanism includes a driving gear fixedly connected to the output shaft of the motor and an arc-shaped rack mounted on the outer arc surface of the arc-shaped mounting plate. The arc-shaped rack meshes with the driving gear; an arc-shaped groove having the same curvature as the arc-shaped mounting plate is provided on the support frame, and a guide rod slidably and guidingly engaged with the arc-shaped groove is connected to the arc-shaped mounting plate.

[0010] Beneficial effects: The gear-rack transmission has no delay, is not prone to tooth skipping or tooth slipping, ensuring the accuracy and stability of the transmission. Moreover, the gear-rack transmission can achieve forward and reverse movements and has good reverse performance, making the reciprocating swing of the arc-shaped mounting plate more stable. The arc-shaped groove ensures high-precision guiding of the guide rod during movement, enabling the sandpaper on the arc-shaped mounting plate to contact the surface of the cylindrical workpiece more fully.

[0011] Further, there are two guide rods slidably engaged with the arc-shaped groove.

[0012] Beneficial effects: There are two guide rods slidably engaged with the arc-shaped groove to facilitate controlling that the arc-shaped mounting plate cannot rotate itself when swinging around its curvature direction, ensuring that its inner arc surface is always parallel to the outer circumferential surface of the cylindrical workpiece, and enabling the sandpaper to be in full contact with the outer circumferential surface of the cylindrical workpiece.

[0013] Further, the arc-shaped mounting plate includes an arc-shaped plate seat and a sandpaper plate seat that are detachably connected together and have the same curvature. The inner arc surface is provided on the sandpaper plate seat, and the arc-shaped rack and the guide rod are both connected to the arc-shaped plate seat.

[0014] Beneficial effects: The sandpaper plate seat is detachably connected to the arc-shaped plate seat, and a suitable sandpaper plate seat can be selected for disassembly and replacement according to different grinding speed requirements and the sizes of different cylindrical workpieces to be ground, with more choices and greater convenience.

[0015] Further, the support frame includes two parallel and spaced-apart support plates and a fixing plate connecting the two support plates. The arc-shaped plate seat and the driving gear are both located between the two support plates. The arc-shaped groove is provided on each support plate, and the motor is fixed to one of the support plates.

[0016] Further, the arc surface grinding device further includes a frame. Defining the central axis of the cylindrical workpiece where the arc-shaped mounting plate is located extends in the left-right direction, and a movable frame is movably assembled on the frame in the left-right direction. The support frame is movably assembled on the movable frame in the front-back direction.

[0017] Beneficial effects: The support frame can move in the left - right direction, enabling the sandpaper to move along the length direction of the cylindrical workpiece, changing the position for grinding the length direction of the cylindrical workpiece, which is beneficial for the sandpaper to completely grind the outer circumferential surface of the entire cylindrical workpiece.

[0018] Further, a first slide rail extending in the left - right direction is provided on the frame. The movable frame is in guiding sliding fit with the first slide rail. A first driving lead screw is rotatably assembled on the frame. The first driving lead screw is in transmission connection with a second driving motor, and the movable frame is in threaded connection with the first driving lead screw.

[0019] Beneficial effects: The first driving lead screw and the movable frame form a left - right lead screw - nut transmission mechanism. The first driving lead screw can provide precise control of converting rotational motion into linear motion. The slide rail ensures straightness and stability during the movement. The combination of the first driving lead screw and the first slide rail realizes high - precision position control when the movable frame moves in the left - right direction. The second driving motor is used to provide the rotational power for the rotation of the first driving lead screw, saving manpower.

[0020] Further, a second slide rail extending in the front - rear direction is provided on the movable frame. A second driving lead screw extending in the front - rear direction is rotatably assembled on the movable frame. The second driving lead screw is in transmission connection with a third driving motor, and a slider is in threaded connection with the second driving lead screw.

[0021] Beneficial effects: The second driving lead screw and the slider form a front - rear lead screw - nut transmission mechanism. The second driving lead screw can provide precise control of converting rotational motion into linear motion. The slide rail ensures straightness and stability during the movement. The combination of the second driving lead screw and the second slide rail realizes high - precision position control when the support frame moves in the front - rear direction. The third driving motor is used to provide the rotational power for the rotation of the second driving lead screw, saving manpower.

[0022] Further, the slider is detachably connected to the fixed plate.

[0023] Beneficial effects: The detachable connection between the slider and the fixed plate makes it more convenient to replace the components on the support frame, and different grinding methods can be selected according to the grinding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the following detailed description with reference to the accompanying drawings, the above - mentioned and other objects, features, and advantages of the exemplary embodiments of the present utility model will become easily understandable. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, where:

[0025] Figure 1 is a three - dimensional structural schematic diagram of the present utility model;

[0026] Figure 2 For Figure 1 The enlarged schematic view of part A in

[0027] Figure 3 This is the schematic diagram of the support frame of the present utility model.

[0028] Explanation of reference numerals in the drawings:

[0029] 1. Cylindrical workpiece; 2. Frame; 3. Sandpaper board seat; 4. Arc plate seat; 5. Support plate; 6. First drive motor; 7. Fixed plate; 8. Arc rack; 9. Drive gear; 10. Guide rod; 11. Arc groove; 12. Screw; 13. Slide block; 14. Second drive lead screw; 15. Second slide rail; 16. Movable frame; 17. First drive lead screw; 18. First slide rail; 19. Inner arc surface. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

[0031] Next, various non-limiting embodiments of the present utility model will be specifically introduced. The number of any element in the drawings is for illustration rather than limitation, and any naming is only for distinction and does not have any limiting meaning. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0032] As Figure 1 And Figure 2 shown, an arc surface grinding device includes a frame 2, a support frame, sandpaper, an arc-shaped mounting plate, and a driving member. For the convenience of description, it is defined that the central axis of the cylindrical workpiece 1 where the arc-shaped mounting plate is located extends in the left-right direction.

[0033] As Figure 2 shown, the support frame has a U-shaped structure and includes a fixed plate 7 and two support plates 5 connected together. The two support plates 5 are parallel, and the two support plates 5 are perpendicular to the fixed plate 7.

[0034] As Figure 3As shown in the figure, the arc-shaped mounting plate includes an arc-shaped plate base 4 and a sandpaper plate base 3 that are detachably connected together. The arc-shaped plate base 4 and the sandpaper plate base 3 have the same radian, and the axis of the arc-shaped mounting plate is the same as the central axis of the cylindrical workpiece 1 where it is located. The front end of the sandpaper plate base 3 has an inner arc surface 19 that matches the outer circumferential surface of the cylindrical workpiece 1 to be polished. The sandpaper is pasted on the inner arc surface 19 through Velcro for polishing the outer circumferential surface of the cylindrical workpiece 1.

[0035] As Figure 2 shown in the figure, both the arc-shaped plate base 4 and the sandpaper plate base 3 are provided with four corresponding threaded holes. Four screws are provided on the four threaded holes of the arc-shaped plate base 4, and the four screws are connected to the four corresponding threaded holes on the sandpaper plate base 3. The sandpaper plate base 3 is detachably connected to the arc-shaped plate base 4 through screws, and a suitable sandpaper plate base 3 can be selected for disassembly and replacement according to different polishing speed requirements and different sizes of the cylindrical workpiece 1 to be polished, with more selectivity and convenience. Two guide rods 10 are provided on the arc-shaped plate base 4 along its radian direction. The two guide rods 10 are symmetric about the horizontal center plane of the arc-shaped plate base 4. An arc-shaped rack 8 is also provided on the rear end surface of the arc-shaped plate base 4, and the arc-shaped rack 8 has the same radian as the arc-shaped plate base 4.

[0036] As Figure 2 shown in the figure, the front ends of the two support plates 5 are respectively provided with arc-shaped grooves 11 that are parallel to each other left and right. The radian of the arc-shaped grooves 11 is the same as the radian of the arc-shaped mounting plate. The left and right ends of the two guide rods 10 are respectively located in the corresponding arc-shaped grooves 11. Through the swinging cooperation of the arc-shaped grooves 11 and the guide rods 10, the swinging direction of the arc-shaped mounting plate is fixed, so that the arc-shaped mounting plate always swings around the central axis of the cylindrical workpiece 1 where it is located. During polishing, the sandpaper on the inner arc surface 19 is always completely attached to the outer circumferential surface of the cylindrical workpiece 1, and the polishing efficiency is higher. Of course, the number of guide rods 10 is not limited to two in this embodiment. In other embodiments, only one guide rod can also be provided or more than three can be provided according to actual needs.

[0037] As Figure 2 shown in the figure, the driving member is a first driving motor 6. The first driving motor 6 is fixedly connected to the support plate 5 on the left side of the support frame. Of course, in other embodiments, the first driving motor 6 can also be fixedly connected to the support plate on the right side of the support frame. A driving gear 9 is fixedly connected to the output shaft of the first driving motor 6. The driving gear 9 meshes with the arc-shaped rack 8 on the arc-shaped plate base 4 to realize the transmission between the first driving motor 6 and the arc-shaped mounting seat. Of course, in other embodiments, the driving member can also be selected as a swinging cylinder.

[0038] As Figure 1 and Figure 2As shown in the figure, a first slide rail 18 extending in the left - right direction is provided on the frame 2. An activity frame 16 that is slidably engaged with the first slide rail 18 is provided on the first slide rail 18. A first driving lead screw 17 is also provided on the frame 2. The first driving lead screw 17 is threadedly connected to the activity frame 16. The first driving lead screw 17 is drivingly connected to a second driving motor. The second driving motor drives the first driving lead screw 17 to rotate, and the activity frame 16 that is slidably assembled with the first driving lead screw 17 can then slide left and right on the first slide rail 18.

[0039] As Figure 1 and Figure 2 shown in the figure, a second slide rail 15 extending in the front - back direction is provided on the activity frame 16. A second driving lead screw 14 extending in the front - back direction is also rotatably assembled on the activity frame 16. The second driving lead screw 14 is drivingly connected to a third driving motor. A slider 13 that is slidably engaged with the second slide rail 15 is provided on the second slide rail 15. The second driving lead screw 14 is threadedly connected to the slider 13. The third driving motor drives the second driving lead screw 14 to rotate, and the slider 13 that is slidably assembled with the second driving lead screw 14 can then slide back and forth on the second slide rail 15. Of course, in other embodiments, the activity frame 16 can also be driven by linear driving components such as linear modules, electric push rods, and air cylinders to move left and right. Similarly, the support frame can also be driven by linear driving components such as linear modules, electric push rods, and air cylinders to move back and forth.

[0040] As Figure 2 shown in the figure, four fastening holes distributed in a rectangle are provided on the fixing plate 7. Screws 12 corresponding to the four fastening holes are provided on the slider 13. The four screws 12 pass through the fastening holes and are detachably connected by four nuts, making it more convenient to replace the grinding component on the support frame and allowing different grinding components to be selected according to the grinding requirements.

[0041] The working process of the present utility model is as follows:

[0042] When the present utility model is in use, sandpaper is pasted onto the inner arc surface 19. The workpiece rotates self - rotatably. The first driving motor 6 is turned on, and the arc - shaped mounting plate drives the sandpaper to start swinging up and down in the arc - shaped groove 11. The third driving motor is turned on, and the second driving lead screw 14 drives the slider 13 to adjust the sandpaper to a suitable grinding position. When the required grinding degree is reached, the second driving motor is turned on, and the first driving lead screw 17 drives the activity frame 16 to adjust the sandpaper to a new grinding position in the left - right direction to continue grinding until the outer circumferential surface of the entire cylindrical workpiece 1 is ground.

[0043] The outer circumferential surface of the cylindrical workpiece 1 is in full contact with the sandpaper on the arc - shaped mounting plate. The arc - shaped mounting plate swings up and down and contacts and frictions with the self - rotating cylindrical workpiece 1. The contact area is larger, the grinding effect is better, and the grinding efficiency is higher.

Claims

1. An arc surface grinding device, characterized in that, It includes a support frame, a sandpaper, an arc-shaped mounting plate and a driving member; The arc-shaped mounting plate has an inner arc surface matching the outer circumferential surface of the cylindrical workpiece to be polished; the sandpaper is pasted on the inner arc surface for polishing the outer circumferential surface of the cylindrical workpiece; The arc-shaped mounting plate is swingably assembled on the support frame around the central axis of the cylindrical workpiece where it is located; The driving member is fixed on the support frame and is in transmission connection with the arc-shaped mounting plate to drive the arc-shaped mounting plate to swing back and forth.

2. The surface grinding device according to claim 1, wherein The driving member is a motor. There is a gear-rack transmission mechanism between the motor and the arc-shaped mounting plate. The gear-rack transmission mechanism includes a driving gear fixedly connected to the output shaft of the motor and an arc-shaped rack mounted on the outer arc surface of the arc-shaped mounting plate. The arc-shaped rack meshes with the driving gear; there is an arc-shaped groove on the support frame with the same curvature as the arc-shaped mounting plate, and a guide rod is connected to the arc-shaped mounting plate and is in guiding sliding fit with the arc-shaped groove.

3. An arc surface grinding device according to claim 2, characterized in that, There are two guide rods in sliding fit with the arc-shaped groove.

4. The arc surface grinding device according to claim 3, characterized in that, The arc-shaped mounting plate includes an arc-shaped plate seat and a sandpaper plate seat that are detachably connected together and have the same curvature. The inner arc surface is arranged on the sandpaper plate seat, and the arc-shaped rack and the guide rod are both connected to the arc-shaped plate seat.

5. The curved surface grinding device according to claim 4, characterized in that, The support frame includes two parallel and spaced-apart support plates and a fixing plate connecting the two support plates. The arc-shaped plate seat and the driving gear are both located between the two support plates. Each support plate is provided with the arc-shaped groove, and the motor is fixed to one of the support plates.

6. The arc surface grinding device according to claim 5, wherein, The arc surface polishing device further includes a frame. Defining the central axis of the cylindrical workpiece where the arc-shaped mounting plate is located extends in the left-right direction. An activity frame is movably assembled on the frame in the left-right direction, and the support frame is movably assembled on the activity frame in the front-back direction.

7. An arc surface grinding device according to claim 6, characterized in that, The frame is provided with a first slide rail extending in the left-right direction. The activity frame is in guiding sliding fit with the first slide rail. A first driving lead screw is rotatably assembled on the frame. The first driving lead screw is in transmission connection with a second driving motor, and the activity frame is threadedly connected to the first driving lead screw.

8. An arc surface grinding device according to claim 6, characterized in that, The activity frame is provided with a second slide rail extending in the front-back direction. A second driving lead screw extending in the front-back direction is rotatably assembled on the activity frame. The second driving lead screw is in transmission connection with a third driving motor, and a slider is threadedly connected to the second driving lead screw.

9. An arc surface grinding device according to claim 8, characterized in that, The slider is detachably connected to the fixing plate.

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