Large workpiece inner surface machining device

Abstract

The invention relates to the technical field of ship machining, in particular to a large workpiece inner surface machining device. The device comprises a fixed seat, a driving mechanism and a cutting mechanism, wherein the fixed seat is used for being fixedly mounted at the end part of a workpiece to be machined; the driving mechanism is mounted on the fixed seat, 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; the cutting mechanism is used for cutting the inner surface of the workpiece. The device can replace manual work to machine a large workpiece, the inner surface of the large workpiece can be machined under the condition that the workpiece is not moved, and the machining efficiency and the machining precision are improved. Besides, the device is bound with the machining area of the workpiece in the machining process, so that the whole device can be adaptively adjusted along with changes of the position and the size of the workpiece, and the situation that the machining precision of the workpiece is affected due to foot warping, deformation, displacement and the like of the workpiece is avoided.

Description

Technical Field

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

[0002] The ship processing structure, also known as the "hull structure", refers to the general term for the hull structure composed of plates and skeletons, etc., mainly including the bottom structure, side structure, deck structure, bulkhead structure, bow and stern structures, and superstructure, etc. When building the hull structure, the entire ship structure is divided into multiple components along the length direction of the hull, specifically including the bow, stern, and the mid-body part located between the bow and the stern. Among them, when machining the stern, it is usually necessary to machine the inner surface (such as the inner hole) of the stern.

[0003] Since the size of the stern is large and it is not convenient to rotate, and conventional machining equipment usually cuts the workpiece by keeping the tool stationary and rotating the workpiece, so conventional machining equipment cannot be applied to the occasion of machining the stern. Currently, it is usually the way of manual grinding to machine the inner surface of the stern, and this way has defects such as high labor intensity, low machining efficiency, and low machining accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for machining the inner surface of a large workpiece, so as to solve the technical problems such as high labor intensity, low machining efficiency, and low machining accuracy existing in machining the inner surface of a large workpiece by the way of manual grinding.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A device for machining the inner surface of a large workpiece, including a fixed seat, a driving mechanism, and a cutting mechanism, wherein: The fixed seat is used for fixedly installing at the end of the workpiece to be machined; The driving mechanism is installed on the fixed 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; The cutting mechanism is used for cutting and machining the inner surface of the workpiece.

[0006] Further, the driving mechanism includes a rotary driving assembly, the rotary driving assembly includes a rotary driving source, the body of the rotary driving source is connected to the fixed seat and its power output end is in transmission connection with the cutting mechanism, and the rotary driving source is configured to drive the cutting mechanism to make a circular motion around the rotation center line.

[0007] Further, the rotary driving assembly further includes a driving gear, a driven gear, and a rotary main shaft, wherein: The driving gear is in transmission connection with the power output end of the rotary driving source; The driven gear meshes with the driving gear and is coaxially fixed at one end of the rotary main shaft; One end of the rotary main shaft away from the driven gear is connected to the cutting mechanism.

[0008] Further, the driving mechanism further includes an axial driving assembly, and the axial driving assembly includes an axial driving source and an axial feed seat, wherein: The axial feed seat is slidably mounted on the fixed seat in a first direction, and the rotary main shaft is rotatably mounted on the axial feed seat; 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 in the first direction; The first direction is parallel to the extending direction of the rotation center line.

[0009] Further, the body of the axial driving source is mounted on the axial feed seat and its power output end is in transmission connection with the fixed seat; And / or, the axial driving assembly further includes a lead screw in transmission connection with the axial driving source and a nut screwed onto the lead screw. Among the lead screw and the nut, one of them is mounted on the fixed seat and the other is mounted on the axial feed seat; And / or, the axial driving assembly further includes a guiding structure connected between the fixed seat and the axial feed seat.

[0010] Further, both the fixed seat and the axial feed seat are hollow shell structures, and the fixed seat, the axial feed seat and the rotary main shaft are sleeved in sequence from outside to inside.

[0011] Further, the driving mechanism further includes a radial driving assembly, and the radial driving assembly includes a radial driving source. The body of the radial driving source is mounted on one end of the rotary main shaft, and the power output end of the radial driving source is in transmission connection with the cutting mechanism. The rotary driving source is configured to drive the cutting mechanism to move relative to the fixed seat in a second direction, and the second direction is perpendicular to the extending direction of the rotation center line.

[0012] Further, the radial driving assembly further includes a radial slide. The radial slide is fixedly mounted on one end of the rotary main shaft, the body of the radial driving source is fixedly mounted on the radial slide, and the cutting mechanism is slidably mounted on the radial slide in the second direction and is in transmission connection with the power output end of the radial driving source.

[0013] Further, the workpiece has an inner hole surface, an inner end surface disposed at one end of the inner hole surface and inside the workpiece, and an outer end surface disposed at the other end of the inner hole surface and outside the workpiece. The cutting mechanism includes a tool holder, a first cutting tool, and a second cutting tool, wherein: The tool holder is in transmission connection with the driving mechanism; The first cutting tool and the second cutting tool are respectively disposed on 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.

[0014] Further, it further includes a fixed frame and a clamping mechanism mounted on the fixed frame, wherein: The fixed frame is used to be sleeved on the workpiece, and the fixed seat can be fixedly mounted on the fixed frame; The clamping mechanism includes a plurality of radially positioning structures arranged in a circumferential manner and / or a plurality of groups of radially telescopic components arranged in a circumferential manner. Among them, the plurality of radially positioning structures are configured to be able to cooperate together to align and position the workpiece, and the plurality of groups of radially telescopic components are configured to be able to cooperate together to radially clamp or release the workpiece.

[0015] Advantages of the present invention: 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 mounted at the end of the workpiece to be processed; The driving mechanism is mounted on the fixed 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; The cutting mechanism is used to perform cutting processing on the inner surface of the workpiece.

[0016] The processing device provided by the present application can replace manual machining of large workpieces, and can complete the machining of the inner surface of large workpieces without moving the workpiece, improving the machining efficiency and machining accuracy. In addition, during the machining process of large workpieces, situations such as the workpiece warping due to temperature changes may occur. However, the processing device provided by the present application is bound to the machining area of the workpiece during the machining process. Therefore, the overall device can be adaptively adjusted with the changes in the position and size of the workpiece, enabling the device to longitudinally adapt to the workpiece and ensuring that the relative position between the device and the machining area of the workpiece remains unchanged, thereby avoiding situations such as the workpiece warping, deforming, and shifting, which affect the machining accuracy of the workpiece. Description of the Drawings

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic assembly structure diagram of the fixed seat, drive mechanism and cutting mechanism in the large workpiece inner surface processing device provided by the embodiment of the present invention; Figure 2 Schematic assembly structure diagram of the drive mechanism and cutting mechanism in the large workpiece inner surface processing device provided by the embodiment of the present invention; Figure 3 Schematic assembly structure diagram of the axial drive source, lead screw and nut provided by the embodiment of the present invention; Figure 4 For Figure 2 Enlarged view of part A in Figure 5 Schematic diagram of the machining process of the inner hole surface of the workpiece by the large workpiece inner surface processing device provided by the embodiment of the present invention; Figure 6 Schematic diagram of the machining process of the inner end face of the workpiece by the large workpiece inner surface processing device provided by the embodiment of the present invention; Figure 7 Schematic diagram of the machining process of the outer end face of the workpiece by the large workpiece inner surface processing device provided by the embodiment of the present invention; Figure 8 Schematic assembly structure diagram of the fixed frame and clamping mechanism in the large workpiece inner surface processing device provided by the embodiment of the present invention; Figure 9 Schematic assembly structure diagram of the large workpiece inner surface processing device and the workpiece provided by the embodiment of the present invention; Figure 10 Three-dimensional structure diagram of the clamping mechanism in the large workpiece inner surface processing device provided by the embodiment of the present invention; Figure 11 For Figure 10 Enlarged view of part D in Figure 12 For Figure 8 Enlarged view of part B in Figure 13 For Figure 8 Enlarged view of part C in

[0019] Icon: 1 - Fixed seat; 11 - Fixed housing; 12 - Fixed disk body; 2 - Driving mechanism; 21 - Rotary driving assembly; 211 - Rotary driving source; 212 - Driven gear; 213 - Rotary main shaft; 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 3 - Cutting mechanism; 31 - Tool holder; 32 - First tool; 33 - Second tool 4 - Fixed frame 5 - Clamping mechanism; 51 - Radial positioning structure; 511 - Support surface; 52 - Radial telescopic assembly; 521 - Mounting shell; 522 - Adjusting screw; 523 - Clamping block 100 - Workpiece; 110 - Inner hole surface; 120 - Inner end face; 130 - Outer end face Specific embodiments

[0020] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] It should be noted that in the description of the present invention, the terms "connection" and "installation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or connected through an intermediate medium; it can be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Aiming at the technical problems of large labor intensity, low processing efficiency, and low processing accuracy in the processing of the inner surface of large workpieces by manual grinding, the present invention provides a device for processing the inner surface of large workpieces. Referring to Figure 1 , the device includes a fixed seat 1, a driving mechanism 2, and a cutting mechanism 3, wherein: The fixing base 1 is used for fixedly installing at the end of the workpiece 100 to be machined; The driving mechanism 2 is installed on the fixing 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; The cutting mechanism 3 is used for machining the inner surface of the workpiece 100.

[0024] Taking the workpiece 100 to be machined as the stern of a ship as an example, in combination with Figure 1 and Figure 5 , when machining the stern of a ship, first fix the fixing base 1 at one end of the stern. Then, start the driving mechanism 2 and the cutting mechanism 3. The driving mechanism 2 drives the cutting mechanism 3 to extend into the workpiece 100 and move along the inner surface of the workpiece 100. At the same time, the cutting mechanism 3 machines the inner surface of the workpiece 100. Through the above process, the automatic machining of the inner surface of a large workpiece taking the stern of a ship as an example is realized.

[0025] As described above, the machining device provided in the present application can replace manual machining of the large workpiece 100, and can complete the machining of the inner surface of the large workpiece 100 without moving the workpiece 100, improving the machining efficiency and machining accuracy. In addition, during the machining process of the large workpiece 100, situations such as the workpiece 100 warping due to temperature changes may occur. However, the machining device provided in the present application is bound to the machining area of the workpiece 100 during the machining process. Therefore, the whole device can be adaptively adjusted with the changes in the position and size of the workpiece 100, enabling the device to be longitudinally adapted to the workpiece 100 and ensuring that the relative position of the device and the machining area of the workpiece 100 remains unchanged, thereby avoiding situations such as warping, deformation, and displacement of the workpiece 100 from affecting the machining accuracy of the workpiece 100.

[0026] In some embodiments, the workpiece 100 has an inner hole surface 110 that needs to be machined. Refer to Figure 2, in order to machine the inner hole surface 110 of the workpiece 100, the driving mechanism 2 includes a rotary driving assembly 21, an axial driving assembly 22 and a radial driving assembly 23. Among them, the rotary driving assembly 21 is used to drive the cutting mechanism 3 to perform a circular motion around the rotation center line, the axial driving assembly 22 is used to drive the cutting mechanism 3 to move in a first direction parallel to the extension direction of the above rotation center line, and the radial driving assembly 23 is used to drive the cutting mechanism 3 to move in a second direction perpendicular to the extension direction of the above rotation center line. During the machining process, the above rotation center line coincides with the axis of the inner hole surface 110. Thus, the rotary driving assembly 21 can drive the cutting mechanism 3 to perform a circular motion around the axis of the inner hole surface 110, the axial driving assembly 22 can drive the cutting mechanism 3 to perform an axial motion along the inner hole surface 110, and the radial driving assembly 23 can drive the cutting mechanism 3 to perform a radial motion along the inner hole surface 110, so that the cutting mechanism 3 can complete the cutting machining of the inner hole surface 110 without the workpiece 100 moving.

[0027] Continue to refer to Figure 1 and Figure 2 , 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 its power output end is in transmission connection with the cutting mechanism 3. The rotary driving source 211 is configured to drive the cutting mechanism 3 to perform a circular motion around the rotation center line.

[0028] In some embodiments, the rotary driving assembly 21 further includes a driving gear, a driven gear 212 and a rotary main shaft 213, where: The driving gear is in transmission connection with the power output end of the rotary driving source 211; The driven gear 212 meshes with the driving gear and is coaxially fixed at one end of the rotary main shaft 213; One end of the rotary main shaft 213 away from the driven gear 212 is connected to the cutting mechanism 3.

[0029] In the above structure, the rotary driving source 211 drives the rotary main shaft 213 to rotate around its own axis (i.e., the above rotation center line) through the driving gear and the driven gear 212. The rotary driving source 211 can be a motor, and the output shaft of the rotary driving source 211 can be connected to the driving gear through a speed reducer.

[0030] Continue to refer to Figure 1 and Figure 2 , the axial driving assembly 22 includes an axial driving source 221 and an axial feed seat 222, where: The axial feed seat 222 is slidably mounted on the fixed seat 1 in the first direction, and the rotary main shaft 213 is rotatably mounted on the axial feed seat 222; The axial driving source 221 is connected between the axial feed base 222 and the fixed base 1, and is configured to drive the axial feed base 222 to move relative to the fixed base 1 in the first direction.

[0031] With the above arrangement, the rotating main shaft 213 can drive the cutting mechanism 3 thereon to rotate relative to the axial feed base 222 and the fixed base 1. At the same time, the axial feed base 222 can drive the rotating main shaft 213 and the cutting mechanism 3 to move relative to the fixed base 1 in the first direction simultaneously.

[0032] In some embodiments, the body of the axial driving source 221 is mounted on the axial feed base 222 and its power output end is in transmission connection with the fixed base 1. With this arrangement, the axial driving source 221 and the axial feed base 222 move relative to the fixed base 1 in the first direction simultaneously. In other embodiments, it can also be arranged that the body of the axial driving source 221 is mounted on the fixed base 1 and its power output end is in transmission connection with the axial feed base 222. With this arrangement, during the process of the axial feed base 222 moving relative to the fixed base 1 in the first direction, the axial driving source 221 does not move relative to the fixed base 1. Both of the above two connection methods can achieve the movement of the axial feed base 222 relative to the fixed base 1 in the first direction, and the axial feed base 222 drives the cutting mechanism 3 to move synchronously while moving in the first direction.

[0033] Refer to Figure 2 and Figure 3 , in some embodiments, the axial driving assembly 22 further includes a lead screw 223 in transmission connection with the axial driving source 221 and a nut 224 screwed onto the lead screw 223. Among the lead screw 223 and the nut 224, one of them is mounted on the fixed base 1 and the other is mounted on the axial feed base 222.

[0034] In some embodiments, in order to improve the smoothness of the movement of the axial feed base 222 relative to the fixed base 1, the axial driving assembly 22 further includes a guiding structure 225 connected between the fixed base 1 and the axial feed base 222. The number of the guiding structures 225 can be one or more, and it is used to limit the movement track of the axial feed base 222 to ensure that the axial feed base 222 moves relative to the fixed base 1 in the first direction. In a specific embodiment, the guiding structure 225 is a guide rail-slider structure, wherein the length direction of the guide rail is parallel to the first direction and is fixedly installed on the axial feed base 222, and the slider is slidably installed on the guide rail and fixedly installed on the fixed base 1.

[0035] Continue to refer to Figure 2, the driving mechanism 2 further includes a radial driving assembly 23. The radial driving assembly 23 includes a radial driving source 231. The body of the radial driving source 231 is mounted at one end of the rotating main shaft 213. The power output end of the radial driving source 231 is in transmission connection with the cutting mechanism 3, and is configured to drive the cutting mechanism 3 to move relative to the fixed seat 1 in the second direction.

[0036] Furthermore, the radial driving assembly 23 further includes a radial slide 232. The radial slide 232 is fixedly mounted at one end of the rotating main shaft 213. The body of the radial driving source 231 is fixedly mounted on the radial slide 232. The cutting mechanism 3 is slidably mounted on the radial slide 232 in the second direction and is in transmission connection with the power output end of the radial driving source 231.

[0037] Based on the above structure, the cutting mechanism 3 specifically includes a tool holder 31 and a tool fixedly mounted on the tool holder 31. The tool holder 31 is slidably mounted on the radial slide 232 in the second direction and is in transmission connection with the power output end of the radial driving source 231. The radial driving source 231 is specifically a motor, and the output shaft of the radial driving source 231 is in transmission connection with the tool holder 31 through a lead screw-nut structure. In order to make the cutting mechanism 3 move more smoothly, a guiding structure such as a guide rail-slider can be provided between the tool holder 31 and the radial slide 232.

[0038] In a specific embodiment, referring to Figure 1 , both the fixed seat 1 and the axial feed seat 222 are hollow shell structures. The axial feed seat 222 is slidably mounted in the fixed seat 1 in the first direction, and the rotating main shaft 213 is rotatably mounted in the axial feed seat 222; both the fixed seat 1 and the axial feed seat 222 are hollow shell structures. Such a setting can not only reduce the weight of the two, but also enable the fixed seat 1, the axial feed seat 222, and the rotating main shaft 213 to be sleeved from outside to inside in sequence, making the structure of the device more compact. Referring to Figure 2 , the body of the rotary driving source 211 is fixed on the axial feed seat 222, and its power output end is connected to one end of the rotating main shaft 213 through a speed reducer, a driving gear, and a driven gear 212. The other end of the rotating main shaft 213 is fixedly connected to the radial slide 232. Thus, the rotary driving source 211 can drive the rotating main shaft 213, the radial driving assembly 23, and the cutting mechanism 3 to rotate simultaneously. The body of the axial driving source 221 is fixed on the axial feed seat 222. The lead screw 223 is rotatably mounted in the axial feed seat 222 parallel to the first direction and is in transmission connection with the power output end of the axial driving source 221. The nut 224 is screwed onto the lead screw 223 and is fixedly mounted on the fixed seat 1. Thus, the axial driving source 221 can drive the axial driving source 221, the axial feed seat 222, the lead screw 223, the rotary driving assembly 21, the radial driving assembly 23, and the cutting mechanism 3 to move in the first direction simultaneously.

[0039] Referring toFigure 2 and Figure 5 When machining the workpiece 100, first move the whole device to the end of the workpiece 100 to make the axis of the rotating main shaft 213 coincide with the axis of the inner hole surface 110 of the workpiece 100, and then fixedly install the fixing seat 1 on the workpiece 100; then, start the rotation drive source 211, the axial drive source 221 and the radial drive source 231. The rotation 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 along the axial direction of the inner hole surface 110, and the radial drive source 231 drives the cutting mechanism 3 to feed along the radial direction of the inner hole surface 110, thereby realizing the cutting machining of the inner hole surface 110.

[0040] Referring to Figure 6 and Figure 7 In some embodiments, the workpiece 100 further has an inner end surface 120 provided at one end of the inner hole surface 110 and located inside the workpiece 100 and an outer end surface 130 provided at the other end of the inner hole surface 110 and located outside the workpiece 100, and both the inner end surface 120 and the outer end surface 130 need to be machined. To machine the inner end surface 120 and the outer end surface 130, referring to Figure 4 the cutting mechanism 3 includes two cutters, which are the first cutter 32 and the second cutter 33 respectively. The first cutter 32 and the second cutter 33 are respectively arranged on opposite sides of the tool holder 31 along the first direction, and the first direction is parallel to the extending direction of the axis of the inner hole surface 110 (i.e., the above-mentioned rotation center line).

[0041] Referring to Figure 5 when the tool holder 31 and the two cutters synchronously move into the inner hole surface 110, the first cutter 32 and the second cutter 33 can be controlled to move on the inner hole surface 110 at the same time, and the two cutters jointly perform cutting machining on the inner hole surface 110. Referring to Figure 6 when the tool holder 31 and the two cutters synchronously move to the inner side of the inner hole surface 110, the second cutter 33 can be controlled to move on the inner end surface 120 to machine the inner end surface 120. Referring to Figure 7 when the tool holder 31 and the two cutters synchronously move to the outer side of the inner hole surface 110, the first cutter 32 can be controlled to move on the outer end surface 130 to machine the outer end surface 130.

[0042] Referring to Figures 8 to 10 In some embodiments, the large workpiece inner surface machining device further includes a fixed frame 4 and a clamping mechanism 5 installed on the fixed frame 4, wherein: The fixed frame 4 is used to be sleeved on the workpiece 100, and the fixing seat 1 is detachably and fixedly installed on the fixed frame 4; The clamping mechanism 5 includes a plurality of radially positioning structures 51 arranged in a circumferential pattern and / or a plurality of groups of radially telescopic components 52 arranged in a circumferential pattern. Among them, the plurality of radially positioning structures 51 are configured to be able to cooperate together to align and position the workpiece 100, and the plurality of groups of radially telescopic components 52 are configured to be able to cooperate together to radially clamp or release the workpiece 100.

[0043] As Figure 9 shown, when machining the workpiece 100, first, the fixed frame 4 is sleeved on the workpiece 100, and the fixed frame 4 is fixed to the workpiece 100 through the clamping mechanism 5. Then, the fixed seat 1 is fixed to the end face of the fixed frame 4. After the installation is completed, the rotation center line 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 under the drive of the drive mechanism 2 and perform cutting processing on the inner surface of the workpiece 100. In addition, the cutting mechanism 3 is equipped with two cutting tools, and through the two cutting tools, the inner hole surface 110, the inner end face 120, and the outer end face 130 of the workpiece 100 can be machined, meeting various machining requirements of the workpiece 100.

[0044] Referring to Figure 1 and Figure 9 FIGS., the fixed seat 1 includes a fixed housing 11 and a fixed disk body 12 provided at one end of the fixed housing 11. During the machining process, the side of the fixed disk body 12 facing away from the fixed housing 11 is fitted and installed with the end face of the fixed frame 4. Grooves and protrusions can be respectively provided on the mutually fitting surfaces of the fixed disk body 12 and the fixed frame 4, and the fixed disk body 12 and the fixed frame 4 are positioned through the plug-in fit of the grooves and protrusions. The fixed disk body 12 can be circular or rectangular, and the specific shape is not limited.

[0045] Optionally, the fixed seat 1 and the fixed frame 4 can adopt two fixing methods: automatic fixing and manual fixing. In some embodiments where the fixed seat 1 and the fixed frame 4 adopt the automatic fixing method, one or more hydraulic cylinders are installed on the fixed frame 4, and the hydraulic cylinder is used to press the periphery of the fixed disk body 12 against the end face of the fixed frame 4. In some embodiments where the fixed seat 1 and the fixed frame 4 adopt the manual fixing method, the fixed seat 1 and the fixed frame 4 are fixed through a plurality of bolts.

[0046] Referring to Figure 10 FIGS., the radially positioning structures 51 and the radially telescopic components 52 can be arranged alternately in the circumferential direction, or two or more groups of radially telescopic components 52 can be provided between every two adjacent radially positioning structures 51. The specific arrangement can be adjusted according to the actual positioning requirements.

[0047] Continuing to refer to Figure 10A support surface 511 is provided on the inner side of each radial positioning structure 51, and the support surfaces 511 on the multiple radial positioning structures 51 form a positioning ring that matches the shape of the outer peripheral surface of the workpiece 100. In the process of putting the fixed frame 4 on the workpiece 100 and pushing the workpiece 100 along the axial direction, when the inner surface of the workpiece 100 is in contact with each support surface 511, it means that the fixed frame 4 is pushed into place, and then the multiple groups of radial telescopic components 52 cooperate to clamp the workpiece 100, so that the fixed frame 4 and the workpiece 100 are fixedly connected.

[0048] Reference Figure 11 Each set of radial telescopic components 52 includes a mounting shell 521, a positioning screw 522 and a clamping block 523, wherein the mounting shell 521 is fixedly mounted on the fixed frame 4, the positioning screw 522 is rotatably mounted on the mounting shell 521 around its own axis, and the clamping block 523 is slidably mounted on the mounting shell 521 along the axis direction of the positioning screw 522 and is screwed to the positioning screw 522. After the fixed frame 4 is pushed into place, the rotating positioning screw 522 drives the clamping block 523 to move, and the multiple clamping blocks 523 cooperate to clamp the workpiece 100.

[0049] Optionally, the adjusting screw rod 522 can be driven automatically or manually.

[0050] In the embodiment where the positioning screw 522 is automatically driven, each set of radial telescopic components 52 further includes a clamping drive source, the body of which is fixed to the mounting shell 521 and the power output end of which is in transmission connection with the positioning screw 522, thereby controlling the rotation of the positioning screw 522. Each set of radial telescopic components 52 further includes a proximity switch disposed on the clamping block 523, through which it is possible to detect whether each clamping block 523 is clamped in place.

[0051] Reference Figure 8 , Figure 12 as well as Figure 13 The number of the clamping mechanisms 5 is two and they are respectively installed at the two ends of the fixed frame 4. The two ends of the fixed frame 4 and the workpiece 100 can be clamped and fixed by the two clamping mechanisms 5, so that the connection between the two is more reliable.

[0052] 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).

[0053] In summary, during the working process of the large workpiece inner surface processing device provided by the present application, first, the fixing frame 4 is bound to the processing area of the workpiece 100 through the clamping mechanism 5, and then the fixing seat 1 is fixedly installed on the fixing frame 4, so that the fixing seat 1, the fixing frame 4 and the workpiece 100 are kept fixed, thereby the driving mechanism 2 and the cutting mechanism 3 can be supported by the fixing seat 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, and each tool in the cutting mechanism 3 can perform axial and radial feeding along the corresponding processing surface during rotation, so that the cutting processing of the inner hole surface 110, the inner end surface 120 and the outer end surface 130 of the workpiece 100 can be completed. This device replaces manual processing and can complete the processing of the inner surface of the workpiece 100 without moving the workpiece 100, improving the processing efficiency and accuracy; moreover, this device can longitudinally adapt to the workpiece 100, avoiding situations such as the workpiece 100 being warped, deformed, displaced, etc. from affecting the processing accuracy.

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions 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 fixing seat (1), a driving mechanism (2) and a cutting mechanism (3), wherein: The fixing seat (1) is used to be fixedly mounted on the end of a workpiece (100) to be processed; 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) is used to perform cutting processing on the inner surface of the workpiece (100).

2. The large workpiece inner surface processing device according to claim 1, characterized in that: The driving mechanism (2) comprises a rotary driving component (21), the rotary driving component (21) comprising a rotary driving source (211), the body of the rotary driving source (211) being connected to the fixing seat (1) and the power output end thereof being transmission-connected to the cutting mechanism (3), the rotary driving source (211) being 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 driving source (211); The driven gear (212) is meshed with the driving gear and is 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 is 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 driving 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 comprises a lead screw (223) drivingly connected to the axial drive source (221) and a nut (224) threadedly connected to the lead screw (223), wherein one of the lead screw (223) and the nut (224) is mounted on the fixed seat (1) and the other is mounted on the axial feed seat (222); And / or, the axial drive assembly (22) further comprises 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), wherein a power output end of the radial driving source (231) is drivingly connected to the cutting mechanism (3), and wherein the radial driving source (231) is configured to drive the cutting mechanism (3) to move relative to the fixing seat (1) along 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 comprises a radial slide (232), wherein the radial slide (232) is fixedly mounted on one end of the rotating main shaft (213), a 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 drivingly connected to a power output end of the radial drive source (231).

9. The large workpiece inner surface processing device according to any one of claims 1 to 8, characterized in that: The workpiece (100) comprises 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 cutting mechanism (3) comprises a tool holder (31), a first tool (32) and a second tool (33), wherein: The knife seat (31) is in transmission connection with the driving mechanism (2); The first tool (32) and the second tool (33) are respectively arranged on two opposite sides of the tool holder (31) along a first direction, wherein the first direction is parallel to an extension direction of an axis of the inner hole surface (110).

10. The large workpiece inner surface processing device according to any one of claims 1 to 8, characterized in that: It also includes a fixed frame (4) and a clamping mechanism (5) mounted on the fixed frame (4), wherein: The fixed frame (4) is used to be mounted on the workpiece (100), and the fixed seat (1) is detachably fixedly mounted on the fixed frame (4); The clamping mechanism (5) comprises a plurality of circumferentially arranged radial positioning structures (51) and / or a plurality of groups 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 groups of radial telescopic components (52) are configured to cooperate together to radially clamp or release the workpiece (100).

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