Automatic polishing machine for inner wall weld of deep cavity

Abstract

This invention provides an automatic grinding machine for deep cavity inner wall welds, comprising: a base, a clamping and feeding mechanism, a frame, a dust collector, a control system, a Z-axis mechanism, and an automatic door mechanism; the frame, the dust collector, and the control system are mounted on the base, and the dust collector is connected to the interior of the frame; the clamping and feeding mechanism and the Z-axis mechanism are installed inside the frame, and the workpiece is clamped by the clamping and feeding mechanism; the automatic door mechanism is provided on the side of the frame; the control system is connected to the clamping and feeding mechanism, the dust collector, the Z-axis mechanism, and the automatic door mechanism; this application can realize radial translational floating grinding of small-diameter deep cavity inner wall welds, filling the gap in existing equipment on the market.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of polishing devices, in particular, to a deep cavity inner wall welding seam automatic polishing machine; especially to a small-diameter deep cavity inner wall welding seam automatic polishing machine. BACKGROUND

[0002] In the field of polishing the inner wall of the cylinder, especially the deep cavity inner wall, the existing products on the market cannot meet the demand, mainly relying on manual polishing to solve the problem. However, manual polishing inevitably brings problems such as poor polishing precision, low efficiency, high scrap rate and so on. The few existing devices for polishing the inner wall also have the problems of low polishing precision and unsuitability for polishing the inner wall of small-diameter deep cavity.

[0003] For example, patent document CN115042054A provides a flexible polishing device for the inner cavity wall of an outer plate mold, which belongs to the field of flexible polishing equipment for the inner cavity wall of a mold. The flexible polishing device for the inner cavity wall of an outer plate mold comprises a mobile vehicle body, an adjusting assembly and a polishing assembly. The mobile vehicle body comprises a vehicle frame and universal wheels, and the universal wheels are arranged on the lower part of the vehicle frame. The adjusting assembly comprises a rotating part, a folding part and an extension part. The rotating part is arranged on the upper part of one side of the vehicle frame. The polishing assembly comprises a first motor, a flexible polishing head and a support plate. The first motor is fixedly connected to the upper part of the support plate, and the output end of the first motor is in transmission connection with the flexible polishing head. This patent mainly realizes the movement of the polishing device, but does not improve the polishing precision of the inner wall of small-diameter deep cavity.

[0004] For example, patent document CN107962736A discloses a BMC injection mold inner cavity polishing device, which comprises a clamping block, a magnet, an electromagnet, a first driving motor, a lifting plate and a polishing head. Two groups of sliding blocks are respectively slidably installed on the sliding rails. The clamping block is threadedly connected to one side of the sliding block. The other side of the sliding block is provided with a magnet. The support table is also provided with an electromagnet. The rear side of the support plate is also fixedly provided with a first driving motor. The upper side of the lifting plate is also fixedly provided with a second driving motor. The lower end of the rotating shaft is also threadedly connected with a polishing head. This patent mainly solves the problem of replacing the clamping tool, but cannot solve the problem of low polishing precision of the inner wall of small-diameter deep cavity. SUMMARY

[0005] In view of the defects in the prior art, the purpose of the present application is to provide a deep cavity inner wall welding seam automatic polishing machine.

[0006] According to the deep cavity inner wall welding seam automatic polishing machine provided by the present application, the machine base, the clamping feeding mechanism, the rack, the dust collector, the control system, the Z-axis mechanism and the automatic door mechanism are provided.

[0007] The rack, the dust collector and the control system are installed on the machine base, and the dust collector is in communication with the inside of the rack.

[0008] The clamping feeding mechanism and the Z-axis mechanism are installed in the rack, and the workpiece is clamped by the clamping feeding mechanism, and the automatic door mechanism is arranged on the side of the rack;

[0009] The control system is connected with the clamping feeding mechanism, the dust removal machine, the Z-axis mechanism and the automatic door mechanism;

[0010] The clamping feeding mechanism comprises a driving device, a side pressing device, a rotary support mechanism, a top pressing mechanism and an X-axis mechanism;

[0011] The driving device, the side pressing device, the rotary support mechanism and the top pressing mechanism are installed on the X-axis mechanism and slide along the X-axis mechanism, the workpiece is rotatably installed on the rotary support mechanism, the workpiece is clamped by the driving device and the side pressing device on both sides, and the workpiece is pressed tightly by the top pressing mechanism away from one end of the rotary support mechanism.

[0012] Preferably, the X-axis mechanism comprises a feeding mechanism mounting plate, an X-axis sliding block, an X-axis guide rail, a ball screw assembly, an X-axis motor, an X-axis speed reducer, an X-axis sliding plate and a limit switch assembly;

[0013] The X-axis sliding block is installed on the feeding mechanism mounting plate, the X-axis guide rail is slidably connected with the X-axis sliding block, the X-axis sliding plate is installed on the X-axis guide rail, and the limit switch assembly is arranged on the feeding mechanism mounting plate;

[0014] The X-axis motor is installed on the feeding mechanism mounting plate, the ball screw assembly is connected with the X-axis sliding plate, the output end of the X-axis motor is connected with the X-axis speed reducer and the ball screw assembly in sequence and drives the X-axis sliding plate to slide relative to the feeding mechanism mounting plate through the ball screw assembly.

[0015] Preferably, the driving device comprises a driving device rack, a driving motor, a driving shaft support seat, a driving shaft, a driving gear, a driven gear, a driven shaft and a driven shaft support seat;

[0016] The driving device rack is installed on the X-axis sliding plate of the X-axis mechanism, the driving shaft is installed on the driving device rack through the driving shaft support seat, and the driven shaft is installed on the driving device rack through the driven shaft support seat;

[0017] The output end of the driving motor is connected with and drives the driving shaft to rotate, the driving gear is installed on the driving shaft, the driven gear is installed on the driven shaft, and the driving gear is engaged with the driven gear;

[0018] The driving roller is mounted on the passive shaft, and the driving roller rolls and presses on the circumferential side of the workpiece.

[0019] Preferably, the side pressing device comprises a side pressing device frame, a side pressing cylinder, a roller support seat, a pin shaft, and a side pressing roller.

[0020] The side pressing device frame is mounted on the X-axis sliding plate of the X-axis mechanism, one end of the side pressing cylinder is mounted on the side pressing device frame, the other end is connected to the roller support seat, and the side pressing roller is rotatably mounted on the roller support seat through the pin shaft.

[0021] The side pressing roller rolls and presses on the circumferential side of the workpiece after being pushed out by the side pressing cylinder.

[0022] Preferably, the rotary support mechanism comprises a rotary mounting plate, a limiting block, a support rail, a support sliding block, a rotary support plate, a rotary bearing, and a protective ring.

[0023] The rotary mounting plate is mounted on the X-axis sliding plate of the X-axis mechanism, the support rail is mounted on the rotary mounting plate, the limiting block is arranged at both ends of the support rail, the support sliding block is slidably mounted on the support rail, the rotary support plate is mounted on the support sliding block, the rotary bearing is mounted in the rotary support plate, the protective ring is arranged on the inner ring side of the rotary bearing, and one end of the workpiece is placed in the protective ring and rotates relative to the rotary support plate through the rotary bearing.

[0024] Preferably, the pressing mechanism comprises a pressing cylinder, a first pressing plate, a cylindrical straight universal ball, a rubber dustproof pad, and a second pressing plate.

[0025] The pressing cylinder is provided with two and is mounted on the driving device or the side pressing device, the first pressing plate and the second pressing plate are connected to one of the pressing cylinders, the cylindrical straight universal ball is clamped through the first pressing plate and the second pressing plate, and the rubber dustproof pad is arranged on the circumferential side of the cylindrical straight universal ball.

[0026] The cylindrical straight universal ball is pressed on the workpiece under the driving of the pressing cylinder.

[0027] Preferably, the frame comprises a frame, a Foma wheel, a lifting ring screw, a first maintenance door, a second maintenance door, a Z-axis mounting plate, and an X-axis mounting plate.

[0028] The frame is mounted on the machine base, one end of the frame towards the machine base is provided with the Foma wheel, the lifting ring screw is mounted on the frame, and the first maintenance door and the second maintenance door are mounted on the side surface of the frame.

[0029] The frame is internally provided with the Z-axis mounting plate and the X-axis mounting plate, the clamping feeding mechanism is mounted on the X-axis mounting plate, the Z-axis mechanism is mounted on the Z-axis mounting plate, the first maintenance door is arranged on one side of the Z-axis mechanism, and the second maintenance door is arranged on one side of the clamping feeding mechanism.

[0030] Preferably, the control system comprises a three-color alarm lamp, a display, a button switch, a keyboard and mouse cabinet and a control cabinet.

[0031] The control cabinet is provided with the three-color alarm lamp, the display, the button switch and the keyboard and mouse cabinet.

[0032] Preferably, the Z-axis mechanism comprises a Z-axis motor, a Z-axis speed reducer, a Z-axis module, a ram and a floating polishing mechanism.

[0033] The ram is fixedly mounted on the frame, the Z-axis module is mounted on the ram, the floating polishing mechanism is slidingly mounted on the ram, the Z-axis motor is connected to the Z-axis speed reducer, and then connected and drives the Z-axis module to work, and the Z-axis module is connected to the floating polishing mechanism and drives the floating polishing mechanism to reciprocate towards the workpiece.

[0034] Preferably, the automatic door mechanism comprises an automatic door mounting seat, a door pushing cylinder and an automatic door fastener.

[0035] The automatic door mounting seat is fixedly mounted on the frame, one end of the door pushing cylinder is connected to the automatic door mounting seat, and the other end is mounted with the automatic door fastener and connected to the material door through the automatic door fastener.

[0036] Compared with the prior art, the present application has the following beneficial effects:

[0037] 1. The clamping feeding mechanism of the present application clamps the workpiece from multiple directions, without affecting the rotation of the workpiece, thereby improving the polishing precision.

[0038] 2. The present application can realize radial translation floating polishing of small-diameter deep-cavity inner wall welds, filling the gap in the existing market equipment.

[0039] 3. The present application realizes machine polishing, avoids the harm of polishing operation to the human body, and solves the problems of poor polishing precision, low efficiency, high scrap rate and other problems existing in current manual polishing.

[0040] 4. The Z-axis mechanism of the present application can extend the floating polishing mechanism into a small-diameter deep-cavity workpiece, solving the problem that ordinary polishing machines are difficult to extend into a small-diameter deep-cavity workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0041] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0042] Figure 1 A schematic diagram of the overall structure of an automatic grinding machine for deep cavity inner wall welds;

[0043] Figure 2 This is a schematic diagram of the internal structure of the rack;

[0044] Figure 3 This is a schematic diagram of the clamping and feeding mechanism.

[0045] Figure 4 This is a schematic diagram of the drive unit structure;

[0046] Figure 5 This is a schematic diagram of the side pressure device structure;

[0047] Figure 6 This is a schematic diagram of the slewing support mechanism.

[0048] As shown in the figure:

[0049]

[0050]

[0051] Detailed Implementation

[0052] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0053] Example 1

[0054] like Figure 1 As shown, this embodiment includes: a base 1, a clamping and feeding mechanism 2, a frame 3, a dust collector 4, a control system 5, a Z-axis mechanism 6, and an automatic door mechanism 7. The frame 3, dust collector 4, and control system 5 are mounted on the base 1. The dust collector 4 is connected to the interior of the frame 3. The clamping and feeding mechanism 2 and the Z-axis mechanism 6 are installed inside the frame 3. The workpiece 8 is clamped by the clamping and feeding mechanism 2. An automatic door mechanism 7 is provided on the side of the frame 3. The control system 5 is connected to the clamping and feeding mechanism 2, the dust collector 4, the Z-axis mechanism 6, and the automatic door mechanism 7. The dust collector 4 is a known dust removal device; in this embodiment, a wet explosion-proof dust collector is used.

[0055] The frame 3 includes: a frame 31, a caster wheel 32, a lifting eye screw 33, a first maintenance door 34, a second maintenance door 35, a Z-axis mounting plate 36, and an X-axis mounting plate 37. The frame 31 is mounted on the base 1. The caster wheel 32 is provided at one end of the frame 31 facing the base 1. The lifting eye screw 33 is installed on the frame 31. The first maintenance door 34 and the second maintenance door 35 are installed on the side of the frame 31. The Z-axis mounting plate 36 and the X-axis mounting plate 37 are provided inside the frame 31. The clamping and feeding mechanism 2 is mounted on the X-axis mounting plate 37. The Z-axis mechanism 6 is mounted on the Z-axis mounting plate 36. The first maintenance door 34 is located on one side of the Z-axis mechanism 6, and the second maintenance door 35 is located on one side of the clamping and feeding mechanism 2.

[0056] The control system 5 includes: a three-color alarm light 51, a display 52, a push-button switch 53, a keyboard and mouse cabinet 54, and a control cabinet 55; the control cabinet 55 is equipped with the three-color alarm light 51, the display 52, the push-button switch 53, and the keyboard and mouse cabinet 54. The control system 5, through circuit control and pneumatic control methods known in the art, works in conjunction with the three-color alarm light 51, the display 52, the push-button switch 53, the mouse, etc., to control and provide feedback on the overall operating status of the remaining structures.

[0057] like Figure 2 As shown, the Z-axis mechanism 6 includes: a Z-axis motor 61, a Z-axis reducer 62, a Z-axis module 63, a slide 64, and a floating grinding mechanism 65. The slide 64 is fixedly mounted on the frame 31, the Z-axis module 63 is mounted on the slide 64, and the floating grinding mechanism 65 is slidably mounted on the slide 64. The output end of the Z-axis motor 61 is connected to the Z-axis reducer 62, which then drives the Z-axis module 63 to work. The Z-axis module 63 is connected to the floating grinding mechanism 65 and drives the floating grinding mechanism 65 to reciprocate towards the workpiece 8. The Z-axis module 63 is a common axial sliding transmission device, such as a slider with guide rail or a lead screw linear motion pair.

[0058] The automatic door mechanism 7 includes: an automatic door mounting base 71, a door-pushing cylinder 72, and an automatic door fastener 73; the automatic door mounting base 71 is fixedly mounted on the frame 31, one end of the door-pushing cylinder 72 is connected to the automatic door mounting base 71, and the other end is equipped with the automatic door fastener 73 and connected to the material gate through the automatic door fastener 73, which is used for feeding materials.

[0059] like Figure 3 As shown, the clamping and feeding mechanism 2 includes: a drive device 21, a side pressure device 22, a rotary support mechanism 23, a top pressure mechanism 24, and an X-axis mechanism 25; the drive device 21, the side pressure device 22, the rotary support mechanism 23, and the top pressure mechanism 24 are mounted on the X-axis mechanism 25 and slide along the X-axis mechanism 25; the workpiece 8 is rotatably mounted on the rotary support mechanism 23; the two sides of the workpiece 8 are clamped by the drive device 21 and the side pressure device 22; and the end of the workpiece 8 facing away from the rotary support mechanism 23 is pressed by the top pressure mechanism 24.

[0060] The pressing mechanism 24 includes: a pressing cylinder 241, a first pressure plate 242, a cylindrical universal ball 243, a rubber dustproof pad 244, and a second pressure plate 245; two pressing cylinders 241 are provided and are respectively installed on the driving device 21 or the side pressing device 22; the first pressure plate 242 and the second pressure plate 245 are respectively connected to one pressing cylinder 241; the cylindrical universal ball 243 is clamped by the first pressure plate 242 and the second pressure plate 245; the cylindrical universal ball 243 is provided with a rubber dustproof pad 244 on its periphery; the cylindrical universal ball 243 is pressed onto the workpiece 8 under the drive of the pressing cylinder 241.

[0061] The X-axis mechanism 25 includes: a feeding mechanism mounting plate 251, an X-axis slider 252, an X-axis guide rail 253, a ball screw assembly 254, an X-axis motor 255, an X-axis reducer 256, an X-axis slide plate 257, and a limit switch assembly 258. The X-axis slider 252 is mounted on the feeding mechanism mounting plate 251, the X-axis guide rail 253 is slidably connected to the X-axis slider 252, the X-axis slide plate 257 is mounted on the X-axis guide rail 253, and the limit switch assembly 258 is provided on the feeding mechanism mounting plate 251. The limit switch assembly 258 is a limiting device for the sliding process of the X-axis slide plate 257. When the X-axis slide plate 257 moves to a certain position, it will be sensed by the limit switch assembly 258 and the movement of the X-axis slide plate 257 will be stopped. The X-axis motor 255 is mounted on the feeding mechanism mounting plate 251. The ball screw assembly 254 is connected to the X-axis slide plate 257. The output end of the X-axis motor 255 is connected to the X-axis reducer 256 and the ball screw assembly 254 in succession, and the ball screw assembly 254 drives the X-axis slide plate 257 to slide relative to the feeding mechanism mounting plate 251.

[0062] like Figure 4 As shown, the drive device 21 includes: a drive device frame 211, a drive motor 212, a drive shaft support 213, a drive shaft 214, a drive gear 215, a driven gear 216, a driven shaft 217, a drive roller 218, and a driven shaft support 219. The drive device frame 211 is mounted on the X-axis slide plate 257 of the X-axis mechanism 25. The drive shaft 214 is mounted on the drive device frame 211 via the drive shaft support 213, and the driven shaft 217 is mounted on the drive device frame 211 via the driven shaft support 219. The output end of the drive motor 212 is connected to and drives the drive shaft 214 to rotate. The drive gear 215 is mounted on the drive shaft 214, and the driven gear 216 is mounted on the driven shaft 217. The drive gear 215 meshes with the driven gear 216. The drive roller 218 is mounted on the driven shaft 217 and rolls and presses against the periphery of the workpiece 8.

[0063] like Figure 5As shown, the side-pressing device 22 includes: a side-pressing device frame 221, a side-pressing cylinder 222, a roller support 223, a pin 224, and a side-pressing roller 225. The side-pressing device frame 221 is mounted on the X-axis slide plate 257 of the X-axis mechanism 25. One end of the side-pressing cylinder 222 is mounted on the side-pressing device frame 221, and the other end is connected to the roller support 223. The side-pressing roller 225 is rotatably mounted on the roller support 223 through the pin 224. After being pushed out by the side-pressing cylinder 222, the side-pressing roller 225 rolls and presses against the periphery of the workpiece 8.

[0064] like Figure 6 As shown, the rotary support mechanism 23 includes: a rotary mounting plate 231, a limiting block 232, a support guide rail 233, a support slider 234, a rotary support plate 235, a rotary bearing 236, and a protective ring 237. The rotary mounting plate 231 is mounted on the X-axis slide plate 257 of the X-axis mechanism 25. The support guide rail 233 is mounted on the rotary mounting plate 231. Limiting blocks 232 are provided at both ends of the support guide rail 233. The support slider 234 is slidably mounted on the support guide rail 233. The rotary support plate 235 is mounted on the support slider 234. The rotary bearing 236 is mounted in the rotary support plate 235. A protective ring 237 is provided on the inner ring side of the rotary bearing 236. One end of the workpiece 8 is placed in the protective ring 237 and rotates relative to the rotary support plate 235 through the rotary bearing 236.

[0065] Example 2

[0066] Example 2 is a preferred example of Example 1.

[0067] like Figures 1 to 6 As shown, this embodiment includes: a clamping and feeding mechanism 2, a frame 3, a dust collector 4, a control system 5, a Z-axis mechanism 6, and an automatic door mechanism 7.

[0068] Frame 3 serves as the basic framework of the entire equipment, providing the mounting base for all moving and electrical components within the cabinet. Frame 3 rests flat on the ground and has four casters 32 at its bottom, allowing for free adjustment of its position and leveling against the reference surface. Eye bolts 33 are located at the top of Frame 3 for overall lifting. A forklift slot is also provided at the bottom for convenient transport. Frame 3 has two sets of double-opening maintenance doors on its side: a first maintenance door 34 and a second maintenance door 35. Acrylic glass panels are inlaid on both doors, allowing observation of the internal condition during processing. The main body of the mechanism consists of a horizontal X-axis and a vertical Z-axis. Frame 3 is equipped with an X-axis mounting plate 37 and a Z-axis mounting plate 36, which respectively mount the feeding mechanism 2 and the Z-axis mechanism 6, ensuring the relative motion accuracy between the X and Z axes. Frame 3 also includes an electrical mounting plate, cable connectors, air pipe connectors, and a cooling fan.

[0069] The clamping and feeding mechanism 2 consists of a drive unit 21, a side-pressing device 22, a rotary support mechanism 23, a top-pressing mechanism 24, and an X-axis mechanism 25, and can realize functions such as workpiece side-pressing, top-pressing, rotation, and feeding. The drive unit 21 is powered by a drive motor 212, and the drive gear 215 and the driven gear 216 are driven by bevel gears. The polyurethane-coated drive roller 218 drives the workpiece 8 to rotate. The side-pressing device 22, the rotary support mechanism 23, and the top-pressing mechanism 24 are all used to clamp the workpiece 8. The side-pressing device 22 is provided with pressure by three sets of side-pressing cylinders 222, and the polyurethane-coated side-pressing roller 225 presses the workpiece 8 radially. The rotary support mechanism 23 adapts to the sliding and rotation of the cylinder along the X-axis. It uses a linear guide module (support guide rail 233 and support slider 234) for sliding, and the rotary bearing 236 is a deep groove ball bearing. Its support method is adaptable to various cylinder diameters and includes a protective ring 237 to effectively prevent scratching the workpiece surface. The top-pressing mechanism 24, to prevent the workpiece 8 from shifting upwards during grinding, is driven by two sets of top-pressing cylinders 241. Cylindrical universal ball joints 243 apply axial pressure to press the workpiece 8 and provide rolling friction contact without affecting its rotation. The X-axis mechanism 25, driven by the X-axis motor 255, moves the workpiece 8 forward and backward. The lower edge of the X-axis slide plate 257 is higher than the upper edge of the X-axis motor 255. The X-axis mechanism 25 completes the loading and unloading of the workpiece 8. Through calibration with the Z-axis, it ensures that the workpiece 8 is transported to the designated grinding station.

[0070] Dust collector 4 adopts a wet explosion-proof dust collector, which can effectively prevent metal dust from causing deflagration and can uniformly remove dust inside the closed box.

[0071] The control system 5 includes circuit control and pneumatic control, and is equipped with a human-machine interface to facilitate the operation of the equipment.

[0072] The Z-axis mechanism 6 can realize functions such as grinding head lowering, floating grinding, and positioning detection. The slide ram 64 adopts a high rigidity design and is installed with two axes and four sliders, which can smoothly transport the floating grinding mechanism 65 to the grinding position. It is suitable for deep cavity processing. The floating grinding mechanism 65 enters and exits the workpiece 8 as a whole. It has a radial floating grinding mechanism, a limiting mechanism, a force feedback system, and an internal support mechanism, which can realize constant force automatic grinding of small diameter deep cavity inner wall welds.

[0073] The automatic door mechanism 7 can automatically open and close the material door, enabling automatic loading and unloading. To facilitate the feeding and unloading of workpieces 8, the automatic door mechanism 7 also ensures the cabinet is enclosed during the grinding process, preventing dust from escaping.

[0074] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An automatic grinding machine for deep cavity inner wall welds, characterized in that, include: The machine base (1), clamping and feeding mechanism (2), machine frame (3), dust collector (4), control system (5), Z-axis mechanism (6) and automatic door mechanism (7); The frame (3), the dust collector (4) and the control system (5) are mounted on the base (1), and the dust collector (4) is connected to the interior of the frame (3); The clamping and feeding mechanism (2) and the Z-axis mechanism (6) are installed inside the frame (3). The workpiece (8) is clamped by the clamping and feeding mechanism (2). The automatic door mechanism (7) is provided on the side of the frame (3). The control system (5) is connected to the clamping and feeding mechanism (2), the dust collector (4), the Z-axis mechanism (6), and the automatic door mechanism (7); The clamping and feeding mechanism (2) includes: a drive device (21), a side pressure device (22), a rotary support mechanism (23), a top pressure mechanism (24), and an X-axis mechanism (25); The drive device (21), the side pressure device (22), the rotary support mechanism (23), and the top pressure mechanism (24) are mounted on the X-axis mechanism (25) and slide along the X-axis mechanism (25). The workpiece (8) is rotatably mounted on the rotary support mechanism (23). The two sides of the workpiece (8) are clamped by the drive device (21) and the side pressure device (22). The end of the workpiece (8) facing away from the rotary support mechanism (23) is pressed by the top pressure mechanism (24). The X-axis mechanism (25) includes: a feeding mechanism mounting plate (251), an X-axis slider (252), an X-axis guide rail (253), a ball screw assembly (254), an X-axis motor (255), an X-axis reducer (256), an X-axis slide plate (257), and a limit switch assembly (258); The X-axis slider (252) is mounted on the feeding mechanism mounting plate (251), the X-axis guide rail (253) is slidably connected to the X-axis slider (252), the X-axis slide plate (257) is mounted on the X-axis guide rail (253), and the limit switch assembly (258) is provided on the feeding mechanism mounting plate (251). The X-axis motor (255) is mounted on the feeding mechanism mounting plate (251), the ball screw assembly (254) is connected to the X-axis slide plate (257), and the output end of the X-axis motor (255) is connected to the X-axis reducer (256) and the ball screw assembly (254) in succession, and drives the X-axis slide plate (257) to slide relative to the feeding mechanism mounting plate (251) through the ball screw assembly (254); The Z-axis mechanism (6) includes: a Z-axis motor (61), a Z-axis reducer (62), a Z-axis module (63), a slide (64), and a floating grinding mechanism (65); The slide block (64) is fixedly installed on the frame (31), the Z-axis module (63) is installed on the slide block (64), the floating grinding mechanism (65) is slidably installed on the slide block (64), the output end of the Z-axis motor (61) is connected to the Z-axis reducer (62) and then connected to drive the Z-axis module (63) to work, the Z-axis module (63) is connected to the floating grinding mechanism (65) and drives the floating grinding mechanism (65) to move back and forth towards the workpiece (8).

2. The automatic grinding machine for deep cavity inner wall welds according to claim 1, characterized in that, The drive device (21) includes: a drive device frame (211), a drive motor (212), a drive shaft support (213), a drive shaft (214), a drive gear (215), a driven gear (216), a driven shaft (217), a drive roller (218), and a driven shaft support (219); The drive unit frame (211) is mounted on the X-axis slide plate (257) of the X-axis mechanism (25), the drive shaft (214) is mounted on the drive unit frame (211) via the drive shaft support (213), and the passive shaft (217) is mounted on the drive unit frame (211) via the passive shaft support (219). The output end of the drive motor (212) is connected to and drives the drive shaft (214) to rotate. The drive gear (215) is mounted on the drive shaft (214), and the driven gear (216) is mounted on the driven shaft (217). The drive gear (215) meshes with the driven gear (216). The drive roller (218) is mounted on the passive shaft (217), and the drive roller (218) rolls and presses against the periphery of the workpiece (8).

3. The automatic grinding machine for deep cavity inner wall welds according to claim 1, characterized in that, The side pressure device (22) includes: a side pressure device frame (221), a side pressure cylinder (222), a roller support (223), a pin (224), and a side pressure roller (225); The side pressure device frame (221) is mounted on the X-axis slide plate (257) of the X-axis mechanism (25). One end of the side pressure cylinder (222) is mounted on the side pressure device frame (221), and the other end is connected to the roller support seat (223). The side pressure roller (225) is rotatably mounted on the roller support seat (223) through the pin (224). The side pressure roller (225) is pushed out by the side pressure cylinder (222) and then rolls and presses against the periphery of the workpiece (8).

4. The automatic grinding machine for deep cavity inner wall welds according to claim 1, characterized in that, The rotary support mechanism (23) includes: a rotary mounting plate (231), a limiting block (232), a support guide rail (233), a support slider (234), a rotary support plate (235), a rotary bearing (236), and a protective ring (237); The rotary mounting plate (231) is mounted on the X-axis slide plate (257) of the X-axis mechanism (25). The support guide rail (233) is mounted on the rotary mounting plate (231). The limit blocks (232) are provided at both ends of the support guide rail (233). The support slider (234) is slidably mounted on the support guide rail (233). The rotary support plate (235) is mounted on the support slider (234). The rotary bearing (236) is mounted in the rotary support plate (235). The protective ring (237) is provided on the inner ring side of the rotary bearing (236). One end of the workpiece (8) is placed in the protective ring (237) and rotates relative to the rotary support plate (235) through the rotary bearing (236).

5. The automatic grinding machine for deep cavity inner wall welds according to claim 1, characterized in that, The top-pressing mechanism (24) includes: a top-pressing cylinder (241), a first pressure plate (242), a cylindrical ball joint (243), a rubber dustproof pad (244), and a second pressure plate (245); Two top-pressure cylinders (241) are provided and are respectively installed on the drive device (21) or the side-pressure device (22). The first pressure plate (242) and the second pressure plate (245) are respectively connected to one of the top-pressure cylinders (241). The cylindrical straight universal ball (243) is clamped by the first pressure plate (242) and the second pressure plate (245). The rubber dustproof pad (244) is provided on the periphery of the cylindrical straight universal ball (243). The cylindrical ball joint (243) is pressed onto the workpiece (8) under the drive of the top pressure cylinder (241).

6. The automatic grinding machine for deep cavity inner wall welds according to claim 1, characterized in that, The frame (3) includes: a frame (31), a fuma wheel (32), a lifting eye screw (33), a first maintenance door (34), a second maintenance door (35), a Z-axis mounting plate (36), and an X-axis mounting plate (37); The frame (31) is mounted on the base (1), and the frame (31) is provided with the wheel (32) facing the base (1). The lifting eye screw (33) is installed on the frame (31), and the first maintenance door (34) and the second maintenance door (35) are installed on the side of the frame (31). The frame (31) is provided with the Z-axis mounting plate (36) and the X-axis mounting plate (37) inside. The clamping and feeding mechanism (2) is mounted on the X-axis mounting plate (37), and the Z-axis mechanism (6) is mounted on the Z-axis mounting plate (36). The first maintenance door (34) is located on one side of the Z-axis mechanism (6), and the second maintenance door (35) is located on one side of the clamping and feeding mechanism (2).

7. The automatic grinding machine for deep cavity inner wall welds according to claim 1, characterized in that, The control system (5) includes: a three-color alarm light (51), a display (52), a push-button switch (53), a keyboard and mouse cabinet (54), and a control cabinet (55); The control cabinet (55) is equipped with the three-color alarm light (51), the display (52), the button switch (53), and the keyboard and mouse cabinet (54).

8. The automatic grinding machine for deep cavity inner wall welds according to claim 6, characterized in that, The automatic door mechanism (7) includes: an automatic door mounting base (71), a door pushing cylinder (72), and an automatic door fastener (73); The automatic door mounting base (71) is fixedly installed on the frame (31). One end of the push-door cylinder (72) is connected to the automatic door mounting base (71), and the other end is installed with the automatic door fastener (73) and connected to the material door through the automatic door fastener (73).

Images