A device for processing the inner surface of a large workpiece

Abstract

The present invention relates to the field of ship processing technology, and in particular to a device for processing the inner surface of a large workpiece. The device includes a fixed seat, a driving mechanism, and a cutting mechanism, wherein: the fixed seat is used to be fixedly installed on the end of the workpiece to be processed; the driving mechanism is installed on the fixed seat and is transmission-connected to the cutting mechanism, and is configured to drive the cutting mechanism to extend into the workpiece and move along the inner surface of the workpiece; the cutting mechanism is used to cut the inner surface of the workpiece. The device can replace manual machining of large workpieces, and can complete the processing of the inner surface of large workpieces without moving the workpiece, thereby improving processing efficiency and processing accuracy. In addition, the device is bound to the processing area of ​​the workpiece during the processing process, so the device as a whole can be adaptively adjusted as the position and size of the workpiece change, thereby avoiding the occurrence of warping, deformation, displacement, etc. of the workpiece, which affects the processing accuracy of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of ship processing, in particular to a device for processing the inner surface of a large workpiece. Background Art

[0002] Shipbuilding structures, also known as "hull structures," collectively refer to the hull structure composed of plates and frames. These primarily include the bottom, sides, deck, bulkheads, bow and stern structures, and superstructures. During hull construction, the entire structure is divided into multiple components along the length of the hull, specifically the bow, stern, and the mid-section between them. Machining the stern typically requires machining its inner surface (e.g., the inner bore).

[0003] Because the stern is large and difficult to rotate, conventional machining equipment typically uses a rotating tool to cut the workpiece while the tool remains stationary. Therefore, conventional machining equipment is not suitable for machining the stern. Currently, the inner surface of the stern is usually machined by manual grinding, which has drawbacks such as high labor intensity, low processing efficiency, and low processing precision. Summary of the Invention

[0004] The purpose of the present invention is to provide a large workpiece inner surface processing device to solve the technical problems of high labor intensity, low processing efficiency and low processing accuracy in processing the inner surface of large workpieces by manual grinding.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A large workpiece inner surface processing device includes a fixed seat, a driving mechanism and a cutting mechanism, wherein:

[0007] The fixing seat is used to be fixedly mounted on the end of the workpiece to be processed;

[0008] The driving mechanism is mounted on the fixing seat and is in transmission connection with the cutting mechanism, and is configured to drive the cutting mechanism to extend into the workpiece and move along the inner surface of the workpiece;

[0009] The cutting mechanism is used for cutting the inner surface of the workpiece.

[0010] Furthermore, the driving mechanism includes a rotary drive component, the rotary drive component includes a rotary drive source, the body of the rotary drive source is connected to the fixed seat and its power output end is transmission-connected to the cutting mechanism, and the rotary drive source is configured to drive the cutting mechanism to perform circular motion around the center line of rotation.

[0011] Furthermore, the rotary drive assembly further includes a driving gear, a driven gear and a rotating main shaft, wherein:

[0012] The driving gear is in transmission connection with the power output end of the rotary drive source;

[0013] The driven gear is meshed with the driving gear and is coaxially fixed to one end of the rotating main shaft;

[0014] One end of the rotating main shaft away from the driven gear is connected to the cutting mechanism.

[0015] Furthermore, the driving mechanism further comprises an axial driving assembly, wherein the axial driving assembly comprises an axial driving source and an axial feed seat, wherein:

[0016] The axial feed seat is slidably mounted on the fixed seat along a first direction, and the rotating spindle is rotatably mounted on the axial feed seat;

[0017] The axial driving source is connected between the axial feed seat and the fixed seat, and is configured to drive the axial feed seat to move relative to the fixed seat along the first direction;

[0018] The first direction is parallel to the extending direction of the rotation center line.

[0019] Furthermore, the body of the axial drive source is mounted on the axial feed seat and its power output end is transmission-connected to the fixed seat;

[0020] And / or, the axial drive assembly further comprises a screw drivingly connected to the axial drive source and a nut threadedly connected to the screw, wherein one of the screw and the nut is mounted on the fixed seat and the other is mounted on the axial feed seat;

[0021] And / or, the axial drive assembly further includes a guide structure connected between the fixing seat and the axial feed seat.

[0022] Furthermore, the fixing seat and the axial feed seat are both hollow shell structures, and the fixing seat, the axial feed seat and the rotating spindle are sequentially mounted from the outside to the inside.

[0023] Furthermore, the driving mechanism also includes a radial drive component, the radial drive component includes a radial drive source, the body of the radial drive source is installed at one end of the rotating spindle, the power output end of the radial drive source is transmission-connected to the cutting mechanism, and the rotating drive source is configured to drive the cutting mechanism to move in a second direction relative to the fixed seat, and the second direction is perpendicular to the extension direction of the rotation centerline.

[0024] Furthermore, the radial drive assembly also includes a radial slide, which is fixedly mounted on one end of the rotating spindle, the body of the radial drive source is fixedly mounted on the radial slide, and the cutting mechanism is slidably mounted on the radial slide along the second direction and is transmission-connected to the power output end of the radial drive source.

[0025] Furthermore, the workpiece has an inner hole surface, an inner end surface provided at one end of the inner hole surface and located inside the workpiece, and an outer end surface provided at the other end of the inner hole surface and located outside the workpiece;

[0026] The cutting mechanism includes a tool holder, a first tool and a second tool, wherein:

[0027] The knife seat is in transmission connection with the driving mechanism;

[0028] The first tool and the second tool are respectively arranged on two opposite sides of the tool holder along a first direction, and the first direction is parallel to the extending direction of the axis of the inner hole surface.

[0029] Furthermore, it also includes a fixed frame and a clamping mechanism installed on the fixed frame, wherein:

[0030] The fixed frame is used to be sleeved on the workpiece, and the fixing seat can be fixedly mounted on the fixed frame;

[0031] The clamping mechanism includes a plurality of circumferentially arranged radial positioning structures and / or a plurality of circumferentially arranged radial telescopic components, wherein the plurality of radial positioning structures are configured to cooperate together to align and position the workpiece, and the plurality of radial telescopic components are configured to cooperate together to radially clamp or release the workpiece.

[0032] Beneficial effects of the present invention:

[0033] The large workpiece inner surface processing device provided by the present invention includes a fixed seat, a driving mechanism and a cutting mechanism, wherein: the fixed seat is used to be fixedly installed on the end of the workpiece to be processed; the driving mechanism is installed on the fixed seat and is transmission-connected to the cutting mechanism, and is configured to drive the cutting mechanism to extend into the workpiece and move along the inner surface of the workpiece; the cutting mechanism is used to perform cutting processing on the inner surface of the workpiece.

[0034] The processing device provided by the present application can replace manual machining of large workpieces, and can complete the processing of the inner surface of large workpieces without moving the workpiece, thereby improving processing efficiency and processing accuracy. In addition, during the processing of large workpieces, the workpiece may warp due to temperature changes, and the processing device provided by the present application is bound to the processing area of ​​the workpiece during the processing. Therefore, the device as a whole can be adaptively adjusted as the position and size of the workpiece change, so that the device can adapt to the longitudinal direction of the workpiece, ensuring that the relative position of the device and the processing area of ​​the workpiece remains unchanged, thereby avoiding the occurrence of warping, deformation, displacement, etc. of the workpiece, which affects the processing accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of the assembly structure of a fixing seat, a driving mechanism, and a cutting mechanism in a large workpiece inner surface processing device provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the assembly structure of the driving mechanism and the cutting mechanism in the large workpiece inner surface processing device provided by an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the assembly structure of an axial drive source, a lead screw, and a nut provided in an embodiment of the present invention;

[0039] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0040] Figure 5 A schematic diagram of a process of machining an inner hole surface of a workpiece by a large workpiece inner surface machining device provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of a process of machining the inner end surface of a workpiece by the large workpiece inner surface machining device provided by an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of a process of machining the outer end surface of a workpiece by a large workpiece inner surface machining device provided by an embodiment of the present invention;

[0043] Figure 8A schematic diagram of the assembly structure of a fixed frame and a clamping mechanism in a large workpiece inner surface processing device provided by an embodiment of the present invention;

[0044] Figure 9 A schematic diagram of the assembly structure of a large workpiece inner surface processing device and a workpiece provided by an embodiment of the present invention;

[0045] Figure 10 A schematic diagram of the three-dimensional structure of a clamping mechanism in a large workpiece inner surface processing device provided by an embodiment of the present invention;

[0046] Figure 11 for Figure 10 Enlarged view of point D in the middle;

[0047] Figure 12 for Figure 8 Enlarged view of point B in the middle;

[0048] Figure 13 for Figure 8 Enlarged view of point C in the middle.

[0049] icon:

[0050] 1-fixed seat; 11-fixed shell; 12-fixed disc;

[0051] 2-driving mechanism; 21-rotating driving assembly; 211-rotating driving source; 212-driven gear; 213-rotating spindle; 22-axial driving assembly; 221-axial driving source; 222-axial feed seat; 223-lead screw; 224-nut; 225-guide structure; 23-radial driving assembly; 231-radial driving source; 232-radial slide;

[0052] 3-cutting mechanism; 31-tool holder; 32-first tool; 33-second tool;

[0053] 4-Fix the rack;

[0054] 5-clamping mechanism; 51-radial positioning structure; 511-support surface; 52-radial telescopic assembly; 521-mounting shell; 522-positioning screw; 523-clamping block;

[0055] 100-workpiece; 110-inner hole surface; 120-inner end surface; 130-outer end surface. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] It should be noted that in the description of the present invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] It should be noted that, in the description of the present invention, the terms "connect" and "install" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can be directly connected or connected through an intermediate medium; and they can be mechanically connected or electrically connected. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0059] Aiming at the technical problems of high labor intensity, low processing efficiency and low processing precision in processing the inner surface of large workpieces by manual grinding, the present invention provides a large workpiece inner surface processing device, referring to Figure 1 The device includes a fixing base 1, a driving mechanism 2 and a cutting mechanism 3, wherein:

[0060] The fixing seat 1 is used to be fixedly mounted on the end of the workpiece 100 to be processed;

[0061] The driving mechanism 2 is mounted on the fixed base 1 and is in transmission connection with the cutting mechanism 3 , and is configured to drive the cutting mechanism 3 to extend into the workpiece 100 and move along the inner surface of the workpiece 100 ;

[0062] The cutting mechanism 3 is used to perform cutting processing on the inner surface of the workpiece 100 .

[0063] Take the workpiece 100 to be processed as the stern as an example, combined with Figure 1 and Figure 5 When machining a stern, first secure the mounting base 1 to one end of the stern. Next, activate the drive mechanism 2 and cutting mechanism 3. Drive mechanism 2 causes the cutting mechanism 3 to extend into the workpiece 100 and move along the inner surface of the workpiece 100. Simultaneously, the cutting mechanism 3 cuts the inner surface of the workpiece 100. This process enables automated machining of the inner surface of a large workpiece, such as a stern.

[0064] As described above, the processing device provided by the present application can replace manual machining of large workpieces 100, and can complete the processing of the inner surface of the large workpiece 100 without the workpiece 100 moving, thereby improving processing efficiency and processing accuracy. In addition, during the processing of the large workpiece 100, the workpiece 100 may warp due to temperature changes, and the processing device provided by the present application is bound to the processing area of ​​the workpiece 100 during the processing. Therefore, the device as a whole can be adaptively adjusted as the position and size of the workpiece 100 change, so that the device can adapt to the workpiece 100 longitudinally, ensuring that the relative position of the device and the processing area of ​​the workpiece 100 remains unchanged, thereby avoiding the occurrence of warping, deformation, displacement, etc. of the workpiece 100, which affects the processing accuracy of the workpiece 100.

[0065] In some embodiments, the workpiece 100 has an inner hole surface 110 that needs to be machined. Figure 2 To machine the inner surface 110 of the workpiece 100, the drive mechanism 2 includes a rotary drive assembly 21, an axial drive assembly 22, and a radial drive assembly 23. The rotary drive assembly 21 is used to drive the cutting mechanism 3 to perform circular motion around a rotational centerline, the axial drive assembly 22 is used to drive the cutting mechanism 3 to move in a first direction parallel to the direction of extension of the rotational centerline, and the radial drive assembly 23 is used to drive the cutting mechanism 3 to move in a second direction perpendicular to the direction of extension of the rotational centerline. During machining, the rotational centerline coincides with the axis of the inner surface 110. Thus, the rotary drive assembly 21 can drive the cutting mechanism 3 to perform circular motion around the axis of the inner surface 110, the axial drive assembly 22 can drive the cutting mechanism 3 to perform axial motion along the inner surface 110, and the radial drive assembly 23 can drive the cutting mechanism 3 to perform radial motion along the inner surface 110, allowing the cutting mechanism 3 to complete the machining of the inner surface 110 without the workpiece 100 being moved.

[0066] Continue to refer to Figure 1 and Figure 2 The rotary drive assembly 21 includes a rotary drive source 211. The body of the rotary drive source 211 is connected to the fixed seat 1 and its power output end is transmission-connected to the cutting mechanism 3. The rotary drive source 211 is configured to drive the cutting mechanism 3 to perform circular motion around the center line of rotation.

[0067] In some embodiments, the rotary drive assembly 21 further includes a driving gear, a driven gear 212 and a rotating main shaft 213, wherein:

[0068] The driving gear is in transmission connection with the power output end of the rotary driving source 211;

[0069] The driven gear 212 is meshed with the driving gear and coaxially fixed to one end of the rotating main shaft 213;

[0070] One end of the rotating main shaft 213 away from the driven gear 212 is connected to the cutting mechanism 3 .

[0071] In the above structure, the rotation drive source 211 drives the rotation main shaft 213 to rotate about its own axis (i.e., the above-mentioned rotation centerline) through the driving gear and the driven gear 212. The rotation drive source 211 can be a motor, and the output shaft of the rotation drive source 211 can be connected to the driving gear via a speed reducer.

[0072] Continue to refer to Figure 1 and Figure 2 The axial drive assembly 22 includes an axial drive source 221 and an axial feed seat 222, wherein:

[0073] The axial feed seat 222 is slidably mounted on the fixed seat 1 along the first direction, and the rotating spindle 213 is rotatably mounted on the axial feed seat 222;

[0074] The axial driving source 221 is connected between the axial feeding seat 222 and the fixing seat 1 , and is configured to drive the axial feeding seat 222 to move along a first direction relative to the fixing seat 1 .

[0075] Through the above arrangement, the rotating spindle 213 can drive the cutting mechanism 3 thereon to rotate relative to the axial feed seat 222 and the fixed seat 1. At the same time, the axial feed seat 222 can drive the rotating spindle 213 and the cutting mechanism 3 to move simultaneously along the first direction relative to the fixed seat 1.

[0076] In some embodiments, the body of the axial drive source 221 is mounted on the axial feed seat 222 and its power output end is transmission-connected to the fixed seat 1. In this arrangement, the axial drive source 221 and the axial feed seat 222 simultaneously move in the first direction relative to the fixed seat 1. In other embodiments, it can also be arranged that the body of the axial drive source 221 is mounted on the fixed seat 1 and its power output end is transmission-connected to the axial feed seat 222. In this arrangement, during the movement of the axial feed seat 222 relative to the fixed seat 1 in the first direction, the axial drive source 221 will not move relative to the fixed seat 1. Both of the above-mentioned connection methods can achieve the movement of the axial feed seat 222 relative to the fixed seat 1 in the first direction, and the axial feed seat 222 drives the cutting mechanism 3 to move synchronously while moving in the first direction.

[0077] Reference Figure 2 and Figure 3 In some embodiments, the axial drive assembly 22 also includes a screw 223 that is transmission-connected to the axial drive source 221 and a nut 224 that is threaded onto the screw 223 . One of the screw 223 and the nut 224 is mounted on the fixed seat 1 , and the other is mounted on the axial feed seat 222 .

[0078] In some embodiments, in order to improve the smoothness of the movement of the axial feed seat 222 relative to the fixed seat 1, the axial drive assembly 22 further includes a guide structure 225 connected between the fixed seat 1 and the axial feed seat 222. The number of the guide structures 225 can be one or more, and they are used to limit the movement trajectory of the axial feed seat 222 and ensure that the axial feed seat 222 moves relative to the fixed seat 1 along the first direction. In a specific embodiment, the guide structure 225 is a guide rail and slider structure, wherein the length direction of the guide rail is parallel to the first direction and is fixedly mounted on the axial feed seat 222, and the slider is slidably mounted on the guide rail and fixedly mounted on the fixed seat 1.

[0079] Continue to refer to Figure 2 The driving mechanism 2 also includes a radial driving component 23, which includes a radial driving source 231. The body of the radial driving source 231 is installed at one end of the rotating spindle 213. The power output end of the radial driving source 231 is transmission-connected to the cutting mechanism 3, which is configured to drive the cutting mechanism 3 to move in the second direction relative to the fixed seat 1.

[0080] Furthermore, the radial drive assembly 23 also includes a radial slide 232, which is fixedly mounted on one end of the rotating spindle 213, the body of the radial drive source 231 is fixedly mounted on the radial slide 232, and the cutting mechanism 3 is slidably mounted on the radial slide 232 along the second direction and is transmission-connected to the power output end of the radial drive source 231.

[0081] Based on the above structure, the cutting mechanism 3 specifically comprises a tool holder 31 and a tool fixedly mounted on the tool holder 31. The tool holder 31 is mounted on a radial slide 232 for sliding movement in the second direction and is transmission-connected to the power output of a radial drive source 231. The radial drive source 231 is specifically a motor, and the output shaft of the radial drive source 231 is transmission-connected to the tool holder 31 via a screw-nut structure. To ensure smoother movement of the cutting mechanism 3, a guide structure such as a guide rail or slider may be provided between the tool holder 31 and the radial slide 232.

[0082] In a specific embodiment, referring to Figure 1 The fixed seat 1 and the axial feed seat 222 are both hollow shell structures. The axial feed seat 222 is slidably installed in the fixed seat 1 along the first direction, and the rotating spindle 213 is rotatably installed in the axial feed seat 222. The fixed seat 1 and the axial feed seat 222 are both hollow shell structures. This arrangement can not only reduce the weight of the two, but also make the fixed seat 1, the axial feed seat 222 and the rotating spindle 213 sequentially installed from the outside to the inside, making the structure of the device more compact. Figure 2The body of the rotary drive source 211 is fixed on the axial feed seat 222, and its power output end is connected to one end of the rotary main shaft 213 through a reducer, a driving gear, and a driven gear 212. The other end of the rotary main shaft 213 is fixedly connected to the radial slide 232, so that the rotary drive source 211 can drive the rotary main shaft 213, the radial drive assembly 23, and the cutting mechanism 3 to rotate simultaneously. The body of the axial drive source 221 is fixed on the axial feed seat 222, and the lead screw 223 is rotatably mounted on the axial feed seat 222 parallel to the first direction and is transmission-connected to the power output end of the axial drive source 221. The nut 224 is screwed onto the lead screw 223 and fixedly mounted on the fixed seat 1, so that the axial drive source 221 can drive the axial drive source 221, the axial feed seat 222, the lead screw 223, the rotary drive assembly 21, the radial drive assembly 23, and the cutting mechanism 3 to move simultaneously along the first direction.

[0083] Reference Figure 2 and Figure 5 When processing the workpiece 100, first move the entire device to the end of the workpiece 100 so that the axis of the rotating spindle 213 coincides with the axis of the inner hole surface 110 of the workpiece 100, and then fix the fixed seat 1 on the workpiece 100; then, start the rotary drive source 211, the axial drive source 221 and the radial drive source 231, the rotary drive source 211 drives the cutting mechanism 3 to rotate around the axis of the inner hole surface 110, the axial drive source 221 drives the cutting mechanism 3 to feed axially along the inner hole surface 110, and the radial drive source 231 drives the cutting mechanism 3 to feed radially along the inner hole surface 110, thereby realizing the cutting processing of the inner hole surface 110.

[0084] Reference Figure 6 and Figure 7 In some embodiments, the workpiece 100 further includes an inner end surface 120 disposed at one end of the inner hole surface 110 and located inside the workpiece 100, and an outer end surface 130 disposed at the other end of the inner hole surface 110 and located outside the workpiece 100. Both the inner end surface 120 and the outer end surface 130 need to be machined. In order to machine the inner end surface 120 and the outer end surface 130, refer to Figure 4 The cutting mechanism 3 includes two tools, namely a first tool 32 and a second tool 33. The first tool 32 and the second tool 33 are respectively arranged on opposite sides of the tool holder 31 along a first direction, and the first direction is parallel to the extension direction of the axis of the inner hole surface 110 (that is, the above-mentioned rotation center line).

[0085] Reference Figure 5 When the tool holder 31 and the two tools are synchronously moved into the inner hole surface 110, the first tool 32 and the second tool 33 can be controlled to move on the inner hole surface 110 at the same time, and the two tools jointly perform cutting processing on the inner hole surface 110. Figure 6When the tool holder 31 and the two tools are synchronously moved to the inner side of the inner hole surface 110, the second tool 33 can be controlled to move on the inner end surface 120 to perform cutting processing on the inner end surface 120. Figure 7 When the tool holder 31 and the two tools are synchronously moved to the outer side of the inner hole surface 110 , the first tool 32 can be controlled to move on the outer end surface 130 to perform cutting processing on the outer end surface 130 .

[0086] Reference Figures 8 to 10 In some embodiments, the large workpiece inner surface processing device further includes a fixed frame 4 and a clamping mechanism 5 mounted on the fixed frame 4, wherein:

[0087] The fixed frame 4 is used to be mounted on the workpiece 100, and the fixing base 1 is detachably fixed on the fixed frame 4;

[0088] The clamping mechanism 5 includes a plurality of circumferentially arranged radial positioning structures 51 and / or a plurality of circumferentially arranged radial telescopic components 52, wherein the plurality of radial positioning structures 51 are configured to cooperate together to align and position the workpiece 100, and the plurality of radial telescopic components 52 are configured to cooperate together to radially clamp or release the workpiece 100.

[0089] like Figure 9 As shown, when processing a workpiece 100, the fixed frame 4 is first placed on the workpiece 100, and then fixed to the workpiece 100 via the clamping mechanism 5. Then, the fixed seat 1 is fixed to the end face of the fixed frame 4. After installation, the rotation centerline of the cutting mechanism 3 coincides with the axis of the inner hole surface 110 of the workpiece 100. In this way, the cutting mechanism 3 can extend into the interior of the workpiece 100 and cut the inner surface of the workpiece 100 under the drive mechanism 2. In addition, the cutting mechanism 3 is equipped with two cutting tools, which can cut the inner hole surface 110, the inner end surface 120, and the outer end surface 130 of the workpiece 100, meeting various processing requirements of the workpiece 100.

[0090] Reference Figure 1 and Figure 9 The fixed base 1 includes a fixed housing 11 and a fixed disc 12 disposed at one end of the fixed housing 11. During processing, the side of the fixed disc 12 facing away from the fixed housing 11 is mounted in contact with the end face of the fixed frame 4. Grooves and protrusions can be provided on the surfaces of the fixed disc 12 and the fixed frame 4 that contact each other, respectively, and the fixed disc 12 and the fixed frame 4 are positioned by plugging and fitting the grooves and protrusions. The fixed disc 12 can be circular or rectangular, and the specific shape is not limited.

[0091] Optionally, the fixing base 1 and the fixing frame 4 can be fixed in two ways: automatic fixing and manual fixing. In some embodiments where the fixing base 1 and the fixing frame 4 are fixed in an automatic manner, one or more hydraulic cylinders are mounted on the fixing frame 4 to press the periphery of the fixing plate 12 against the end surface of the fixing frame 4. In some embodiments where the fixing base 1 and the fixing frame 4 are fixed in a manual manner, the fixing base 1 and the fixing frame 4 are fixed in place by a plurality of bolts.

[0092] Reference Figure 10 The radial positioning structures 51 and the radial telescopic components 52 can be arranged alternately along the circumferential direction, or two or more groups of radial telescopic components 52 can be provided between each two adjacent radial positioning structures 51. The specific arrangement can be adjusted according to actual positioning requirements.

[0093] Continue to refer to Figure 10 Each radial positioning structure 51 is provided with a support surface 511 on its inner side. The support surfaces 511 on the multiple radial positioning structures 51 form a positioning ring that matches the shape of the outer circumference of the workpiece 100. When the fixed frame 4 is placed on the workpiece 100 and advanced axially, when the inner surface of the workpiece 100 is in contact with each support surface 511, the fixed frame 4 is positioned in place. The multiple radial expansion and contraction assemblies 52 then cooperate to clamp the workpiece 100, securing the fixed frame 4 and the workpiece 100 in a fixed connection.

[0094] Reference Figure 11 Each radial expansion assembly 52 includes a mounting housing 521, a positioning screw 522, and a clamping block 523. The mounting housing 521 is fixedly mounted on the fixed frame 4, the positioning screw 522 is rotatably mounted on the mounting housing 521 about its own axis, and the clamping block 523 is slidably mounted on the mounting housing 521 along the axis of the positioning screw 522 and is threadedly connected to the positioning screw 522. After the fixed frame 4 is pushed into position, the positioning screw 522 is rotated to drive the clamping block 523 to move, and the multiple clamping blocks 523 cooperate to clamp the workpiece 100.

[0095] Optionally, the adjusting screw 522 can be driven automatically or manually.

[0096] In embodiments where the positioning screws 522 are automatically driven, each radial expansion assembly 52 also includes a clamping drive source. The clamping drive source is fixed to the mounting housing 521, and its power output is in driving connection with the positioning screws 522, thereby controlling the rotation of the positioning screws 522. Each radial expansion assembly 52 also includes a proximity switch mounted on the clamping block 523, which detects whether each clamping block 523 is securely clamped.

[0097] Reference Figure 8 、 Figure 12 as well as Figure 13 The number of the clamping mechanisms 5 is two and they are respectively mounted at the two ends of the fixed frame 4. The two clamping mechanisms 5 can be used to clamp and fix the two ends of the fixed frame 4 and the workpiece 100, making the connection between the two more reliable.

[0098] It should be noted that the two clamping mechanisms 5 may not be completely the same. Figure 12 and Figure 13 As shown, the shapes of the corresponding parts in the two clamping mechanisms 5 are different, but the working principles of the corresponding parts are the same (ie, substantially the same).

[0099] In summary, during the operation of the large workpiece inner surface processing device provided by the present application, the fixed frame 4 is first bound to the processing area of ​​the workpiece 100 by the clamping mechanism 5, and then the fixed base 1 is fixedly installed on the fixed frame 4, so that the fixed base 1, the fixed frame 4 and the workpiece 100 remain fixed, so that the driving mechanism 2 and the cutting mechanism 3 can be supported by the fixed base 1; then, the driving mechanism 2 drives the cutting mechanism 3 to extend into the interior of the workpiece 100 and move along the inner surface of the workpiece 100. During the rotation process, each tool in the cutting mechanism 3 can be fed axially and radially along the corresponding processing surface, thereby completing the cutting process of the inner hole surface 110, the inner end surface 120 and the outer end surface 130 of the workpiece 100. This device replaces manual processing and can complete the processing of the inner surface of the workpiece 100 without the workpiece 100 moving, thereby improving the processing efficiency and accuracy; in addition, the device can adapt to the workpiece 100 longitudinally, avoiding the occurrence of warping, deformation, displacement, etc. of the workpiece 100 affecting the processing accuracy.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large workpiece inner surface processing device, characterized in that: It comprises a fixed seat (1), a driving mechanism (2), a cutting mechanism (3), a fixed frame (4) and a clamping mechanism (5), wherein: The fixing seat (1) is used for being fixedly mounted on an end portion of a workpiece (100) to be processed, the workpiece (100) being a stern of a ship, the workpiece (100) comprising an inner hole surface (110), an inner end surface (120) arranged at one end of the inner hole surface (110) and located inside the workpiece (100), and an outer end surface (130) arranged at the other end of the inner hole surface (110) and located outside the workpiece (100); The driving mechanism (2) is mounted on the fixing seat (1) and is in transmission connection with the cutting mechanism (3), and is configured to drive the cutting mechanism (3) to extend into the workpiece (100) and move along the inner surface of the workpiece (100); The cutting mechanism (3) comprises a tool holder (31), a first tool (32) and a second tool (33), wherein: the tool holder (31) is transmission-connected to the driving mechanism (2); the first tool (32) and the second tool (33) are respectively arranged on opposite sides of the tool holder (31) along a first direction, and the first direction is parallel to the extension direction of the axis of the inner hole surface (110); when the tool holder (31) and the two tools are synchronously moved into the inner hole surface (110), the two tools jointly cut the inner hole surface (110); when the tool holder (31) and the two tools are synchronously moved to the inner side of the inner hole surface (110), the second tool (33) cuts the inner end surface (120); when the tool holder (31) and the two tools are synchronously moved to the outer side of the inner hole surface (110), the first tool (32) cuts the outer end surface (130); The fixed frame (4) is used to be mounted on the workpiece (100), and the fixed seat (1) is detachably fixed on the fixed frame (4); the clamping mechanism (5) is mounted on the fixed frame (4), and includes a plurality of circumferentially arranged radial positioning structures (51) and a plurality of circumferentially arranged radial telescopic components (52), wherein the plurality of radial positioning structures (51) are configured to cooperate with each other to align and position the workpiece (100), and the plurality of radial telescopic components (52) are configured to cooperate with each other to radially clamp or release the workpiece (100).

2. The large workpiece inner surface processing device according to claim 1, characterized in that: The driving mechanism (2) includes a rotary driving assembly (21), the rotary driving assembly (21) includes a rotary driving source (211), the body of the rotary driving source (211) is connected to the fixed seat (1) and the power output end thereof is transmission-connected to the cutting mechanism (3), and the rotary driving source (211) is configured to drive the cutting mechanism (3) to perform circular motion around a rotation centerline.

3. The large workpiece inner surface processing device according to claim 2, characterized in that: The rotary drive assembly (21) further comprises a driving gear, a driven gear (212) and a rotating main shaft (213), wherein: The driving gear is in transmission connection with the power output end of the rotary drive source (211); The driven gear (212) is meshed with the driving gear and coaxially fixed to one end of the rotating main shaft (213); The rotating main shaft (213) is rotatably connected to the fixed seat (1), and one end of the rotating main shaft (213) away from the driven gear (212) is connected to the cutting mechanism (3).

4. The large workpiece inner surface processing device according to claim 3, characterized in that: The driving mechanism (2) further comprises an axial driving assembly (22), wherein the axial driving assembly (22) comprises an axial driving source (221) and an axial feed seat (222), wherein: The axial feed seat (222) is slidably mounted on the fixed seat (1) along a first direction, and the rotating spindle (213) is rotatably mounted on the axial feed seat (222); The axial drive source (221) is connected between the axial feed seat (222) and the fixed seat (1), and is configured to drive the axial feed seat (222) to move relative to the fixed seat (1) along the first direction; The first direction is parallel to the extending direction of the rotation center line.

5. The large workpiece inner surface processing device according to claim 4, characterized in that: The body of the axial drive source (221) is mounted on the axial feed seat (222) and its power output end is in transmission connection with the fixed seat (1); And / or, the axial drive assembly (22) further includes a screw (223) drivingly connected to the axial drive source (221) and a nut (224) screwed to the screw (223), one of the screw (223) and the nut (224) being mounted on the fixed seat (1) and the other being mounted on the axial feed seat (222); And / or, the axial drive assembly (22) further includes a guide structure (225) connected between the fixed seat (1) and the axial feed seat (222).

6. The large workpiece inner surface processing device according to claim 4, characterized in that: The fixed seat (1) and the axial feed seat (222) are both hollow shell structures, and the fixed seat (1), the axial feed seat (222) and the rotating main shaft (213) are sequentially mounted from the outside to the inside.

7. The large workpiece inner surface processing device according to claim 3, characterized in that: The driving mechanism (2) further comprises a radial driving assembly (23), wherein the radial driving assembly (23) comprises a radial driving source (231), wherein a body of the radial driving source (231) is mounted on one end of the rotating main shaft (213), and a power output end of the radial driving source (231) is in transmission connection with the cutting mechanism (3), and the radial driving source (231) is configured to drive the cutting mechanism (3) to move relative to the fixed seat (1) in a second direction, wherein the second direction is perpendicular to the extension direction of the rotation centerline.

8. The large workpiece inner surface processing device according to claim 7, characterized in that: The radial drive assembly (23) further includes a radial slide (232), wherein the radial slide (232) is fixedly mounted on one end of the rotating main shaft (213), the body of the radial drive source (231) is fixedly mounted on the radial slide (232), and the cutting mechanism (3) is slidably mounted on the radial slide (232) along the second direction and is transmission-connected to the power output end of the radial drive source (231).

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