Numerical control sanding machine for top edges of special-shaped cookware

Abstract

The invention relates to the field of numerical control sanding machines for cookware, in particular to a numerical control sanding machine for the top edge of a special-shaped cookware. A numerical control sanding machine for the top edge of a special-shaped cookware comprises a machine tool, a moving and polishing mechanism and a workpiece clamping and rotating mechanism. The moving and polishing mechanism comprises a moving assembly, an adjusting assembly and a polishing assembly. The workpiece clamping and rotating mechanism is provided with an adapter plate, and the cookware is magnetically connected with the adapter plate; a rotary driving motor is arranged at the bottom of the workpiece rotating assembly to drive the cookware to rotate; the workpiece clamping and rotating mechanism is further provided with a transmission belt, and a linear driving motor is arranged at one end of the transmission belt and drives the workpiece rotating assembly to linearly move. According to the numerical control sanding machine for the top edges of the special-shaped cookware at different angles, the sanding belt is provided with a triangular structure capable of being flexibly adjusted, and the sanding belt further has the angle adjusting and tensioning adjusting functions, so that the sanding belt can be better attached to the edge of the cookware.

Description

Technical Field

[0001] The present application relates to the field of CNC sanding machines for cookware, and in particular to a CNC sanding machine for the top edge of special-shaped cookware.

[0002] Technical issues

[0003] In the prior art, ordinary cookware has a simple shape, placing low demands on the CNC sanding machines used to polish it. However, special-shaped cookware is a wide variety, with non-standard curved surfaces featuring complex features such as multi-directional bends, sharp corners, depressions, or protrusions. These surfaces vary in diameter, depth, curvature, and material, requiring the sanding path to precisely follow the curved surface. This makes uniform sanding of special-shaped cookware challenging. Consumers, however, demand extremely high visual and tactile qualities for high-end cookware, demanding consistent gloss and texture from flat surfaces to shaped areas. This requires a consistent surface finish, making it difficult for conventional sanding machines to maintain a constant grinding volume on complex curved surfaces. Each change in pot shape requires readjusting or replacing the fixture, reprogramming, and setting the sanding belt / wheel path and pressure parameters. This results in lengthy changeover times, significantly impacting production efficiency, a significant disadvantage particularly in small-batch, high-variety production. The need for skilled technicians increases labor costs and downtime. This demonstrates the significant shortcomings of the prior art. Summary of the Invention

[0004] In order to overcome the defects of the related art, the present application provides a CNC sanding machine for the top edge of special-shaped pots.

[0005] CNC sanding machine for the top edge of special-shaped pots, including machine tool, motion and sanding mechanism, workpiece clamping and rotating mechanism;

[0006] A workbench is provided on the top surface of the machine tool for installing the workpiece clamping and rotating mechanism, movement and grinding mechanism;

[0007] The motion and grinding mechanism includes a motion component, an adjustment component and a grinding component;

[0008] The motion assembly includes a first carriage, a second carriage, a third carriage and an adjusting cylinder;

[0009] The adjusting assembly includes a mounting plate, an adjusting plate, a bow plate, a lead screw, a pressure rod, a tensioning wheel, a contact wheel and a guide wheel, wherein a first support shaft and a second support shaft are respectively provided on the mounting plate, one end of the lead screw is hinged to the first support shaft, the other end of the lead screw is hinged to the pressure rod, and the other end of the pressure rod can rotate around the second support shaft; the tensioning wheel is movably connected to the pressure rod; a plurality of waist-shaped holes are also provided on the mounting plate, and the adjusting plate moves relative to the mounting plate through the plurality of waist-shaped holes; an arc hole is provided on the adjusting plate, and the bow plate is displaced relative to the adjusting plate through the arc hole; a third rotating shaft is provided on the bow plate, and a contact wheel is provided on the third rotating shaft; the grinding assembly includes a driving motor and a sanding belt, and the driving motor is used to drive the sanding belt to rotate; the sanding belt between the guide wheel and the contact wheel forms a flexible grinding area;

[0010] The workpiece clamping and rotating mechanism is provided with an adapter plate, and the pot and the adapter plate are magnetically connected; a rotary drive motor is provided at the bottom of the workpiece rotating assembly to drive the pot to rotate; the workpiece clamping and rotating mechanism is also provided with a transmission belt, and a linear drive motor is provided at one end of the transmission belt to drive the workpiece rotating assembly to move linearly.

[0011] Furthermore, a U-shaped seat and a first rotating shaft are provided on the side of the pressure rod facing the mounting plate. The U-shaped seat and the first rotating shaft are hinged. A tensioning knob is provided at one end of the outer side of the first rotating shaft. The tensioning knob passes through the pressure rod, and the tensioning wheel is provided on the first rotating shaft.

[0012] Furthermore, a second rotating shaft is provided on the arched plate, and a guide wheel is provided on the second rotating shaft.

[0013] Furthermore, a rubber wheel is provided on the driving motor, and the outer wall of the rubber wheel passes through the sand belt.

[0014] Furthermore, the mounting plate is also provided with a hook handle for preventing rebound.

[0015] Furthermore, a barb is provided at the end of the hook handle to hook into the limiting groove on the second support shaft.

[0016] Furthermore, a dust collection hood is provided below the polishing assembly.

[0017] Furthermore, the CNC sanding machine for the top edge of special-shaped cookware is provided with a switch box for controlling the machine tool; and a switch panel is provided on the switch box.

[0018] Furthermore, two opposing accordion plates are provided on the workbench, accordion covers are provided on opposite sides of the accordion plates, a slide plate and a side connecting plate are connected between the accordion covers, two slide rails are provided between the two accordion plates, and two fixed columns are also provided between the two accordion plates. Multiple sliders are provided under the slide plate, the fixed columns pass through the sliders, and the multiple sliders can move on the slide rails along the fixed columns.

[0019] Furthermore, a linear drive motor is provided at one end of the transmission belt, and an axle seat, a slide seat, a fixed shaft, and a nut block are provided at the other end of the transmission belt. The axle seat can move in the slide groove of the slide seat; a fixed shaft is fixedly connected to the axle seat, and a nut block is provided on the fixed shaft for tightening to fix the axle seat and the slide seat; a clamping pad is also fixedly provided under the slide plate, and the transmission belt is limited by the clamping pad to prevent the transmission belt from shifting.

[0020] This application has at least one of the following beneficial effects:

[0021] 1. The motion and grinding mechanism precisely controls the position, posture, and trajectory of the abrasive belt relative to the special-shaped pot. First, based on linear movement in the X, Y, and Z axes, the adjustment assembly adjusts the positions of the lead screw, pressure rod, adjustment plate, and bow plate, further adjusting the positions of the tensioning and contact wheels to form a flexible, triangular abrasive belt structure. The belt also features angle and tension adjustment, allowing the contact wheel to better conform to the varying angles of the pot edge.

[0022] 2. The workpiece clamping and rotation mechanism controls the vertical axis of a workpiece rotating assembly mounted on the worktable. This drives the pot's rotation, allowing the abrasive belt to continuously and evenly polish the entire circumference. High-precision linear guideways ensure smooth movement and high rigidity. Linear motion is achieved through a linear drive motor, while rotary motion is achieved through a rotary drive motor.

[0023] 3. This CNC sanding machine for the top edge of special-shaped pots is an automated device specifically designed for grinding and polishing the top edges of pots (such as woks and soup pots) (curling, flanging, deburring, and chamfering). Its core goal is to achieve high efficiency, high consistency, and high surface quality edge processing.

[0024] 4. This application can process complex features such as multi-directional bends, edges and corners, depressions or protrusions of special-shaped cookware. The sanding path can strictly fit the curved surface, meeting users' extremely high requirements for the visual and tactile feel of high-end cookware, and ensuring the consistency of gloss, texture and surface finish from flat surfaces to special-shaped areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the machine tool structure of an embodiment of the present application.

[0027] Figure 3 This is a schematic diagram of the first drag plate structure of an embodiment of the present application.

[0028] Figure 4 This is a schematic diagram of the second carriage structure of an embodiment of the present application.

[0029] Figure 5 This is a schematic diagram of the third carriage structure of an embodiment of the present application.

[0030] Figure 6 It is a schematic diagram of the cylinder structure of an embodiment of the present application.

[0031] Figure 7 It is a schematic diagram of the structure of the regulating component of an embodiment of the present application.

[0032] Figure 8It is a schematic diagram of the U-shaped seat structure of an embodiment of the present application.

[0033] Figure 9 It is a schematic diagram of the hook handle structure of an embodiment of the present application.

[0034] Figure 10 This is a schematic diagram of the waist-shaped hole and arc-shaped hole structure of the embodiment of the present application.

[0035] Figure 11 It is a schematic diagram of the workpiece clamping and rotating mechanism structure of an embodiment of the present application.

[0036] Figure 12 It is a schematic diagram of the slide rail structure of an embodiment of the present application.

[0037] Figure 13 It is a schematic diagram of the fixed column and slider structure of an embodiment of the present application.

[0038] Figure 14 It is a schematic diagram of the axle seat structure of an embodiment of the present application.

[0039] Figure 15 This is a schematic diagram of the clamping pad structure of an embodiment of the present application.

[0040] Figure numerals: 1, machine tool; 2, movement and grinding mechanism; 3, workpiece clamping and rotating mechanism; 4, flexible grinding area; 11, frame; 12, bed; 40, connecting plate; 41, mounting plate; 42, long plate; 43, short plate; 44, driving motor; 45, rubber wheel; 46, sanding belt; 47, connecting seat; 48, cylinder; 51, first support shaft; 52, second support shaft; 53, screw; 54, pressure rod; 55, U-shaped seat; 61, first rotating shaft ; 62. Second rotating shaft; 63. Third rotating shaft; 64. Tensioning knob; 65. Hook handle; 66. Barb; 67. Limiting groove; 71. Adjusting plate; 72. Waist-shaped hole; 73. Arc-shaped hole; 74. Bow plate; 75. Guide wheel; 76. Contact wheel; 77. Tensioning wheel; 80. Dust hood; 81. Dust cover; 82. Wrench; 103. Long beam; 104. Short beam; 105. Vertical beam; 106. Workbench; 109. Workpiece rotating assembly 110. Slide plate; 111. Adapter plate; 112. Cookware; 113. Rotary drive motor; 114. Motor mounting base; 115. Switch box; 116. Switch panel; 117. Organ plate; 118. Organ cover; 119. Side plate; 120. Slide rail; 121. Fixed column; 122. Slider; 123. Drive belt; 124. Linear drive motor; 125. Shaft seat; 126. Slider; 127. Fixed shaft; 128. Nut block; 129. Clamping pad; 210. Stand; 211. First carriage; 212. First upper slide; 213. First base; 214. First guide rod; 215. First handwheel; 221. Second carriage; 222. Second upper slide; 223. Second base; 224. Second guide rod; 225. Second handwheel; 231. Third carriage; 232. Third upper slide; 233. Third base; 234. Third guide rod; 235. Third handwheel. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] The following is combined with Figure 1-15 This application is described in further detail.

[0045] Example 1:

[0046] Reference Figure 1 and Figure 2 The machine tool 1 includes a frame 11 and a bed 12. The machine tool 1 is configured as a rectangular parallelepiped. The frame 11 includes four long beams 103, four short beams 104, and four vertical beams 105. The four vertical beams 105 serve as vertical supports. Two opposing long beams 103 and two opposing short beams 104 form the top surface, on which a workbench 106 is provided for mounting a slide 110. Similarly, two opposing long beams 103 and two opposing short beams 104 form the bottom surface, on which a bottom plate is provided. Two side doors are respectively provided between the two vertical beams 105 connected to the long beams 103. The four side doors are respectively hinged to the vertical beams 105. Two small doors are provided on one side between the two vertical beams 105 connected to the short beams 104. The two small doors are respectively hinged to the vertical beams 105, and a closing plate is provided on the other side. A middle partition of the frame is set between two adjacent doors to strengthen the support. Multiple door handles are also set on the side doors and small doors to open the machine tool doors: The machine tool 1 serves as the basic structure of the equipment, carrying all other components, providing rigidity and stability, and reducing the impact of vibration on grinding accuracy. The bed 12 needs to be precisely processed to ensure the flatness of the slide 110. The bed 12 of the machine tool 1 can also serve as a storage device. The bottom of the four vertical beams 105 are respectively provided with a base to increase stability. An electrical installation plate 41 is also provided inside the machine tool 1 for installing the drive motor.

[0047] Reference Figure 3 、 Figure 4 and Figure 5The bottom layer of the motion and polishing mechanism 2 is provided with a first carriage 211. The first carriage 211 includes a first upper slide 212 and a first base 213. The first base 213 is fixedly mounted on the workbench 106 of the frame 11. The first base 213 is provided with a first guide rod 214 and a first handwheel 215 for controlling the forward and backward displacement of the motion and polishing mechanism 2. By rotating the first handwheel 215, the first guide rod 214 drives the first upper slide 212 to move forward and backward. The second carriage 221 includes a second upper slide 222 and a second base 223. The second base 223 is fixedly mounted above the first upper slide 212. The second base 223 is provided with a second guide rod 224 and a second handwheel 225 for controlling the left and right displacement of the motion and polishing mechanism 2. By rotating the second handwheel 225, the second guide rod 224 drives the second upper slide 222 to move left and right. The second upper slide 222 is fixedly mounted with a stand 210. A third carriage 231 is mounted on the sidewall of the stand 210. This carriage 231 comprises a third upper slide 232 and a third base 233. The third base 233 and the grinding mechanism are coupled to each other for vertical movement. Rotating the third handwheel 235 causes the third guide rod 234 to move the third upper slide 232 vertically. The third carriage 231 performs coarse vertical adjustments.

[0048] Reference Figure 5 、 Figure 6 and Figure 10 The third upper slide plate 232 is fixed with a connecting plate 40, and an L-shaped mounting plate 41 is fixed on the other side of the connecting plate 40. The L-shaped mounting plate 41 includes a long plate 42 and a short plate 43. The long plate 42 of the mounting plate 41 is fixed with an L-shaped connecting seat 47 on the side facing the connecting plate 40. A cylinder 48 is provided on the L-shaped connecting seat 47. The cylinder 48 drives the mounting plate 41 to move up and down in the vertical direction, and the cylinder 48 performs precise adjustment in the vertical direction.

[0049] A drive motor 44 is fixedly mounted on the outer wall of the short plate 43 of the mounting plate 41. In the embodiment of the present application, the drive motor 44 is configured as a three-phase asynchronous motor. The three-phase asynchronous motor is provided with a rubber wheel 45. The outer wall of the rubber wheel 45 passes through an abrasive belt 46. The abrasive belt 46 is used to perform the actual grinding and polishing work.

[0050] Reference Figure 7 、 Figure 8 and Figure 11A first support shaft 51 and a second support shaft 52 are fixedly mounted on the outer wall of the other side of the long plate 42 of the mounting plate 41. A lead screw 53 is hingedly mounted on the other end of the first support shaft 51, and one end of a pressure rod 54 is hingedly mounted on the other end of the lead screw 53. The pressure rod 54 is provided with multiple positioning holes, and the other end of the pressure rod 54 is connected to the other end of the second support shaft 52. A U-shaped seat 55 is provided on the side of the pressure rod 54 facing the long plate 42 of the L-shaped mounting plate 41. A nut seat is provided within the U-shaped seat 55, and the nut seat and the U-shaped seat 55 are hingedly connected. A first rotating shaft 61 is disposed within the nut seat. A tensioning knob 64 is provided at one end of the outer side of the first rotating shaft 61, and a tensioning pulley 77 is provided at the other end of the first rotating shaft 61. Two bearings are provided on both sides of the tensioning pulley 77 for fixing the tensioning pulley 77. The tensioning pulley 77 and the two bearings pass through the first rotating shaft 61 in sequence. The tensioning wheel 77 is fixed on the hinged U-shaped seat 55 and the nut seat. The five-star shaped tensioning knob 64 can lift the tensioning wheel 77 to release the tension and facilitate the replacement of the sanding belt 46 or maintenance. Figure 9 The outer wall of the long plate 42 is also fixedly provided with a hook handle 65 to prevent rebound. The end of the hook handle 65 is provided with a barb 66 to cooperate with the limiting groove 67 on the second support shaft 52.

[0051] Loosen the tensioning knob 64, rotate the lead screw 53 to drive the pressure rod 54 to rotate, adjust the position of the tensioning wheel 77, then tighten the tensioning knob 64, fix the tensioning wheel 77, and further fix the hook handle 65.

[0052] Reference Figure 7 、 Figure 10 and Figure 11 An adjustment plate 71 is provided on the long plate 42 of the L-shaped mounting plate 41. Four waist-shaped holes 72 are provided on the long plate 42 of the L-shaped mounting plate 41. The adjustment plate 71 is provided with an arcuate hole 73. An arched plate 74 is displaced relative to the adjustment plate 71 through the arcuate hole 73. A second rotating shaft 62 is also provided on the arched plate 74. A guide wheel 75 is provided on the second rotating shaft 62. Both ends of the guide wheel 75 are fixed to the second rotating shaft 62 via two bearings. A third rotating shaft 63 is also provided on the other end of the arched plate 74. A contact wheel 76 is provided on the third rotating shaft 63. Both ends of the contact wheel 76 are fixed to the third rotating shaft 63 via two bearings.

[0053] The dust collecting cover 80 is fixedly arranged on the outer wall of the long plate 42 of the L-shaped mounting plate 41 for collecting waste and preventing sparks from flying. The dust collecting cover 80 is provided with a wrench 82, which is connected to the dust collecting cover 81. The dust collecting cover 81 is detachable for easy cleaning of the dust collecting cover 80.

[0054] The three-phase asynchronous motor in the polishing assembly provides power. The sanding belt 46 passes through the rubber wheel 45, the tensioning wheel 77, the contact wheel 76, and the guide wheel 75 in sequence. The rubber wheel 45, the tensioning wheel 77, and the contact wheel 76 form the three corners of a triangle. The sanding belt 46 between the guide wheel 75 and the contact wheel 76 forms a flexible polishing area 4. This application can process complex features such as multi-directional bends, sharp corners, depressions, or protrusions in special-shaped cookware. The sanding path can achieve strict conformity to the curved surface, meeting the extremely high visual and tactile requirements of users for high-end cookware, and ensuring the consistency of gloss, texture, and surface finish from flat surfaces to special-shaped areas.

[0055] The motion and grinding mechanism 2 is the core power component of the CNC sanding machine for the top edge of irregularly shaped pots. The drive motor 44 provides power for the sanding belt 46. The rubber wheel 45 is the driving wheel, or active wheel. The contact wheel 76 is one of the most critical components. The flexible grinding area 4 between the guide wheel 75 and the contact wheel 76 directly contacts the edge of the pot 112, directly affecting the grinding effect and contour adaptability. It must be wear-resistant and provide a certain elastic buffer. The contact wheel 76 adaptively floats within a certain range (radially) to follow the slight fluctuations or shape errors of the pot 112 edge, maintaining a constant contact pressure to avoid over- or under-grinding. The tensioning wheel 77 maintains constant tension on the sanding belt 46. The guide wheel 75 serves as a guide. The sanding belt 46 can be selected with different grit sizes and materials, such as aluminum oxide, silicon carbide, zirconium corundum, or emery cloth / sandpaper, depending on the process requirements (rough grinding, fine polishing, and material).

[0056] The motion and grinding mechanism 2 precisely controls the position, posture, and trajectory of the abrasive belt 46 relative to the irregularly shaped pot 112. First, based on the linear movement of the motion assembly in the X, Y, and Z axes, the adjustment assembly adjusts the positions of the lead screw 53, pressure rod 54, adjustment plate 71, and bow plate 74, further adjusting the positions of the tensioning wheel 77 and contact wheel 76 to form a flexibly adjustable triangular structure of the abrasive belt 46. The abrasive belt 46 also features angle and tension adjustment functions, allowing the abrasive belt 46 and the flexible grinding area 4 to better conform to the varying angles of the pot edge.

[0057] Reference Figure 11 and Figure 12 The workpiece clamping and rotating mechanism 3 is used to accurately and stably fix the pot 112 and drive it to rotate.

[0058] A workpiece rotation assembly 109 is fixedly mounted on the slide 110. The top of the workpiece rotation assembly 109 is connected to an adapter plate 111, on which a special-shaped pot 112 is mounted. The special-shaped pot 112 and the adapter plate 111 are magnetically connected. The adapter plate 111 can accommodate pots 112 of varying diameters, making the shape of the pot bottom less demanding and preventing damage to the pot's outer surface. A rotation drive motor 113 is mounted at the bottom of the workpiece rotation assembly 109. This rotation drive motor 113 is fixed to the bottom of the sliding worktable 106 via a motor mounting bracket 114. Two switch boxes 115 are located above the small door for controlling the machine tool 1. Each switch box 115 is equipped with a switch panel 116.

[0059] Two opposing accordion plates 117 are provided on the workbench 106. An accordion cover 118 is provided on opposite sides of the accordion plate 117. A slide plate 110 and a side connecting plate 119 are connected between the accordion covers 118. Figure 13 Two slide rails 120 are arranged between the two accordion plates 117 , and two fixed columns 121 are also arranged between the two accordion plates 117 . A plurality of sliders 122 are arranged under the slide plate 110 . The fixed columns 121 pass through the sliders 122 , and the plurality of sliders 122 can move on the slide rails 120 along the fixed columns 121 .

[0060] A transmission belt 123 is provided below the slide 110, and one end of the transmission belt 123 is connected to a linear drive motor 124. Figure 14 The other end of the transmission belt 123 is provided with an axle seat 125, a slide 126, a fixed shaft 127, and a nut block 128. The axle seat 125 can move in the slide groove of the slide 126; the axle seat 125 is fixedly connected to the fixed shaft 127, and the fixed shaft 127 is provided with a nut block 128 for tightening, fixing the axle seat 125 and the slide 126. Figure 15 A clamping pad 129 is fixedly provided under the slide 110, and the transmission belt 123 is limited by the clamping pad 129 to prevent the transmission belt 123 from shifting. The linear drive motor 124 drives the transmission belt 123 to move, thereby driving the slide 110 to move back and forth.

[0061] The workpiece clamping and rotation mechanism 3 controls the workpiece rotation assembly 109 mounted on the worktable 106 to rotate about a vertical axis, driving the pot 112 to rotate, allowing the abrasive belt 46 to continuously and evenly polish the entire circumference. Furthermore, a high-precision linear guide 120 ensures smooth motion and high rigidity. Linear motion is achieved by a linear drive motor 124, while rotational motion is achieved by a rotary drive motor 113.

[0062] In summary, the present application provides a CNC sanding machine for the top edges of irregularly shaped pots 112, equipped with a sanding belt 46 with a flexible, adjustable triangular structure. The sanding belt 46 also features angle and tension adjustment, allowing the sanding belt 46 and its flexible sanding area 4 to better conform to the various angles of the pot's edge. The CNC sanding machine for the top edges of irregularly shaped pots 112 is an automated device specifically designed for sanding and polishing the top edges of pots 112 (e.g., woks, soup pots, etc.), including curling, flanging, deburring, and chamfering. Its core goal is to achieve efficient, consistent, and high-quality edge processing.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. CNC sanding machine for the top edge of special-shaped pots, characterized by: It includes a machine tool (1), a motion and grinding mechanism (2), and a workpiece clamping and rotating mechanism (3); The top surface of the machine tool (1) is provided with a workbench (106) for mounting a workpiece clamping and rotating mechanism (3) and a moving and grinding mechanism (2); The motion and polishing mechanism (2) includes a motion component, an adjustment component and a polishing component; The motion assembly includes a first carriage (211), a second carriage (221), a third carriage (231) and an adjusting cylinder (48); The adjusting assembly comprises a mounting plate (41), an adjusting plate (71), a bow plate (74), a lead screw (53), a pressure rod (54), a tensioning wheel (77), a contact wheel (76) and a guide wheel (75). The mounting plate (41) is provided with a first support shaft (51) and a second support shaft (52). One end of the lead screw (53) is hinged to the first support shaft (51), and the other end of the lead screw (53) is hinged to the pressure rod (54). The other end of the pressure rod (54) can rotate around the second support shaft (52). The tensioning wheel (77) is movably connected to the pressure rod (54). The mounting plate (41) is also provided with a plurality of waist-shaped holes (76). 2), the adjustment plate (71) moves relative to the mounting plate (41) through a plurality of waist-shaped holes (72); an arc-shaped hole (73) is provided on the adjustment plate (71), and the bow-shaped plate (74) is displaced relative to the adjustment plate (71) through the arc-shaped hole (73); a third rotating shaft (63) is provided on the bow-shaped plate (74), and a contact wheel (76) is provided on the third rotating shaft (63); the grinding assembly includes a driving motor (44) and a grinding belt (46), and the driving motor (44) is used to drive the grinding belt (46) to rotate; the grinding belt (46) between the guide wheel (75) and the contact wheel (76) forms a flexible grinding area (4); The workpiece clamping and rotating mechanism (3) is provided with an adapter plate (111), and the pot (112) and the adapter plate (111) are magnetically connected; a rotation drive motor (113) is provided at the bottom of the workpiece rotating assembly (109) to drive the pot (112) to rotate; the workpiece clamping and rotating mechanism (3) is also provided with a transmission belt (123), and a linear drive motor (124) is provided at one end of the transmission belt (123) to drive the workpiece rotating assembly (109) to move linearly.

2. The CNC sanding machine for the top edge of special-shaped cookware according to claim 1, characterized in that: A U-shaped seat (55) and a first rotating shaft (61) are provided on one side of the pressure rod (54) facing the mounting plate (41). The U-shaped seat (55) and the first rotating shaft (61) are hinged. A tensioning knob (64) is provided at one end outside the first rotating shaft (61). The tensioning knob (64) passes through the pressure rod (54). A tensioning wheel (77) is provided on the first rotating shaft (61).

3. The CNC sanding machine for the top edge of special-shaped cookware according to claim 1, characterized in that: A second rotating shaft (62) is also provided on the arched plate (74), and a guide wheel (75) is provided on the second rotating shaft (62).

4. The CNC sanding machine for the top edge of special-shaped cookware according to claim 1, characterized in that: A rubber wheel (45) is provided on the driving motor (44), and an outer wall of the rubber wheel (45) passes through a sand belt (46).

5. The CNC sanding machine for the top edge of special-shaped cookware according to claim 1, characterized in that: The mounting plate (41) is also provided with a hook handle (65) for preventing rebound.

6. The CNC sanding machine for the top edge of special-shaped cookware according to claim 5, characterized in that: The end of the hook handle (65) is provided with a barb (66) for hooking the limiting groove (67) on the second support shaft (52).

7. The CNC sanding machine for the top edge of special-shaped cookware according to claim 1, characterized in that: A dust collecting cover (80) is provided below the polishing assembly.

8. The CNC sanding machine for the top edge of special-shaped cookware according to claim 1, characterized in that: The CNC sanding machine for the top edge of special-shaped pots is provided with a switch box (115) for controlling the machine tool (1); a switch panel (116) is provided on the switch box (115).

9. The CNC sanding machine for the top edge of special-shaped cookware according to claim 1, characterized in that: Two opposing accordion plates (117) are provided on the workbench (106), accordion covers (118) are provided on opposite sides of the accordion plates (117), a slide plate (110) and a side connecting plate (119) are connected between the accordion covers (118), two slide rails (120) are provided between the two accordion plates (117), two fixed columns (121) are also provided between the two accordion plates (117), a plurality of sliders (122) are provided below the slider (110), the fixed columns (121) pass through the sliders (122), and the plurality of sliders (122) can move on the slide rails (120) along the fixed columns (121).

10. The CNC sanding machine for the top edge of special-shaped cookware according to claim 9, characterized in that: A linear drive motor (124) is provided at one end of the transmission belt (123), and an axle seat (125), a slide seat (126), a fixed shaft (127), and a nut block (128) are provided at the other end of the transmission belt (123). The axle seat (125) can move in the slide groove of the slide seat (126); a fixed shaft (127) is fixedly connected to the axle seat (125), and a nut block (128) is provided on the fixed shaft (127) for tightening, fixing the axle seat (125) and the slide seat (126); a clamping pad (129) is also fixedly provided below the slide plate (110), and the transmission belt (123) is limited by the clamping pad (129) to prevent the transmission belt (123) from shifting.

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