A forging cutting apparatus and cutting method

Abstract

The present application relates to the field of forging cutting, in particular to a kind of forging cutting equipment and cutting method, including firmware part, the outside of the firmware part is equipped with torsion portion, the outside of the torsion portion is equipped with cutting portion, the inside of the cutting portion is equipped with internal partition, the internal partition includes flip soft board, the built-in slot of the flip soft board is inserted with splash-proof net board, contact shift plate is rolled contact with the surface of forging by rolling ball, can be self-adapting adjustment with cutting position change, flip soft board drives splash-proof net board to form dynamic protective barrier, can effectively block high-temperature waste produced by arc or plasma arc cutting, avoid waste splashing to the relative surface of forging and cause damage, when automatic, semi-automatic arc cutting or plasma arc cutting, effectively avoid the waste of forging produced by melting can splash to the relative surface of the cutting position of cylindrical forging, cause the surface damage or adhesion of this area, directly affect the overall machining quality of forging problem.

Description

Technical Field

[0001] This invention relates to the field of forging cutting, specifically to a forging cutting device and a cutting method. Background Technology

[0002] Forgings are key basic components in fields such as machinery manufacturing, aerospace, and energy and chemical engineering. Their precision and quality directly affect the performance of end products. In the forging production process, the cutting process is the core link to achieve precise dimensions and customized shapes for forgings. The performance of the cutting equipment is a key factor restricting the processing efficiency and quality of forgings. At present, advanced technologies such as automatic and semi-automatic electric arc cutting or plasma arc cutting have been gradually introduced into the forging cutting field. Among them, electric arc cutting uses the heat generated by the high-temperature electric arc to melt and separate the metal, which is suitable for cutting medium and thick plate forgings. Plasma arc cutting uses the thermal and kinetic energy of high-speed plasma gas flow to quickly cut various metal materials, especially showing significant advantages in the processing of high-hardness and high-melting-point forgings. Therefore, a cutting device is needed to facilitate the cutting of forgings.

[0003] In the cutting and processing of cylindrical forgings, it is often necessary to cut non-through holes. However, when using electric arc or plasma arc cutting technology, the cutting energy has strong penetrating power, which can easily cause melting of the forging surface. The forging chips generated by melting will splash onto the opposite surface of the cylindrical forging, causing surface damage or adhesion in that area, directly affecting the overall processing quality of the forging. At the same time, the cutting trajectory of existing electric arc or plasma arc cutting equipment is mostly limited to linear motion mode, lacking the flexible displacement adjustment capability to adapt to the curved surface of cylindrical forgings. When cutting the curved surface of cylindrical forgings or non-through holes distributed along the curved surface, the equipment cannot adjust the cutting trajectory in real time according to the curvature of the curved surface, resulting in a large deviation between the cutting path and the preset contour, which seriously limits the applicability of the equipment in the cutting of irregular cylindrical forgings. Summary of the Invention

[0004] The purpose of this invention is to provide a forging cutting device and a cutting method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a forging cutting device, comprising a fastener part, a torsion part on the outside of the fastener part, the torsion part including a torsion disc, an adjustment groove on the outer wall of the torsion disc, a fixed ring frame rotatably connected inside the adjustment groove, a clamping part on the inner side of the fastener part, a cutting part on the outside of the torsion part, the cutting part including a displacement plate, a telescopic cylinder fixedly connected to the displacement plate, an inner fixed rod fixedly connected to the displacement plate, an inner partition part inside the cutting part, the inner partition part including two mating hinges, both mating hinges rotatably connected to the inner fixed rod, a flipping flexible plate fixedly connected to the two mating hinges, a splash guard plate fixedly inserted into the built-in groove of the flipping flexible plate, and two contact moving plates fixedly connected to the outer wall of the mating hinges.

[0006] Preferably, the fastener includes a fixed base frame, an inner frame is fixedly connected inside the fixed base frame, two sets of support roller frames are fixedly connected to the inner side of the inner frame, two constraint side grooves are opened on the fixed base frame, and two mating tooth plates are fixedly connected to the outer side of the fixed base frame.

[0007] Preferably, the torsion disk has a toothed disc on its end face, three shaft holes are opened on the torsion disk, two outer brackets are fixedly connected to the outer wall of the fixed ring frame, a rectangular plate is fixedly connected to the bottom of each of the two outer brackets, the rectangular plates of the two outer brackets are slidably connected in the corresponding two constraint side grooves, a torsion motor is fixedly connected to the bottom of the torsion disk, the motor shaft of the torsion motor is connected to a mating gear, and the mating gear is connected to the toothed disc of the torsion disk through a snap-fit.

[0008] Preferably, each of the two outer frame rectangular plates is fixedly connected to a side fixing block, each of the two side fixing blocks has a rotating groove inside, and each of the two side fixing blocks has a displacement gear rotatably connected in the rotating groove. Each of the two displacement gears is connected to a corresponding mating gear plate through a snap-fit. Each of the two side fixing blocks is fixedly connected to a displacement motor outside, and the motor shafts of the two displacement motors are connected to the corresponding displacement gear.

[0009] Preferably, the clamping part includes a fixed base block, which is fixedly connected to the inside of the fixed base frame. The fixed base block has a flipping groove, and a flipping frame is rotatably connected to the flipping groove of the fixed base block. The flipping frame has two displacement grooves inside, which are connected to each other through shaft holes. A clamping screw is rotatably connected to the shaft holes of the two displacement grooves. The clamping screw has a bidirectional thread, and a clamping block is connected to each bidirectional thread of the clamping screw. The two clamping blocks are slidably connected in the corresponding displacement grooves.

[0010] Preferably, the displacement plate is provided with a shaft hole, the telescopic shaft of the telescopic cylinder extends out from the shaft hole of the displacement plate, the telescopic shaft of the telescopic cylinder is fixedly connected to the torsion disk, a spring is provided between the displacement plate and the torsion disk, and the inner fixing rod is slidably connected in the corresponding shaft hole of the torsion disk.

[0011] Preferably, an outer support frame is fixedly connected to the displacement plate, the outer support frame is slidably connected to the corresponding shaft hole of the torsion disc, a mounting bracket is fixedly connected to the outer support frame, a gun holder is fixedly connected to the mounting bracket, and a cutting gun body is fixedly connected inside the gun holder.

[0012] Preferably, each of the two mating hinges has two shaft holes, the inside of the flip-up flexible plate has a built-in groove, each of the two contact plates is movably connected to a ball, each of the two shaft holes of the two mating hinges is rotatably connected to a movable toggle head, each of the two movable toggle heads has a shaft hole, each of the two movable toggle heads with a shaft hole is rotatably connected to an adjusting screw, each of the two movable toggle heads without a shaft hole is fixedly connected to a mating bracket, each of the two mating brackets has a threaded through hole, and each of the two mating brackets is connected to a corresponding adjusting screw through the threaded through hole.

[0013] In this invention, a cutting method for a forging cutting device includes the following steps:

[0014] S1: The cylindrical forging is hoisted onto the fastener by external equipment, so that the forging is kept stable by the fastener. The angle of the cutting part is adjusted by the rotation of the torsion part, so that the cutting part moves along the preset arc trajectory to achieve the cutting process of the forging.

[0015] S2: By adjusting the clamping part, the radial centering clamping of the forging is completed. The telescopic shaft of the telescopic cylinder extends and pushes the displacement plate to move synchronously towards the forging. The inner fixing rod slides along the shaft hole of the torsion disc with the displacement plate, and the return spring is compressed. When the cutting part contacts the surface of the forging, it continues to feed according to the preset depth to complete the cutting of the non-through hole.

[0016] S3: By finely adjusting the opening angle of the connecting plate, the contact plate is brought into contact with the inner wall of the forging, and when the flip plate is unfolded, the anti-splash mesh covers the back of the cutting area to block the waste generated during cutting.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Through the synergistic effect of the torsion section, the torsion motor drives the mating gear to mesh with the gear plate of the torsion disk, realizing the rotation adjustment of the torsion disk around the fixed ring frame; at the same time, the displacement motor drives the displacement gear to roll along the mating gear plate, so that the outer frame moves linearly along the constraint side groove. This combination of rotation and linear motion allows the cutting section to accurately adapt to the arc surface trajectory of the cylindrical forging. When cutting the arc surface of the cylindrical forging or the non-through holes distributed along the arc surface, it solves the problem that the equipment cannot adjust the cutting trajectory in real time according to the curvature of the arc surface, resulting in a large deviation between the cutting path and the preset contour.

[0019] 2. The contact plate of the inner partition rolls against the surface of the forging via a ball bearing, and can adaptively adjust according to the cutting position. The rotating flexible plate drives the anti-splash mesh to form a dynamic protective barrier, which can effectively block the high-temperature waste chips generated by electric arc or plasma arc cutting, preventing waste chips from splashing onto the opposite surface of the forging and causing damage. At the same time, by adjusting the screw and the threaded engagement of the mating bracket, the protection range of the anti-splash mesh can be flexibly fine-tuned, further reducing the impact of waste chips on the surface quality of the forging. During automatic and semi-automatic electric arc cutting or plasma arc cutting, it effectively prevents the waste chips generated by melting from splashing onto the opposite surface of the cylindrical forging at the cutting position, causing surface damage or adhesion in that area, which directly affects the overall processing quality of the forging. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional assembly structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional assembly structure from below according to the present invention;

[0022] Figure 3 This is an exploded structural diagram of the present invention;

[0023] Figure 4 This is an exploded bottom view schematic diagram of the structure of the present invention;

[0024] Figure 5 This is a partial cross-sectional view of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part A is shown.

[0026] Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure of section B is shown.

[0027] Figure 8 This is a schematic diagram of the firmware assembly structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the torsion assembly structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the card assembly structure of the present invention;

[0030] Figure 11 This is a schematic diagram of the assembly structure of the cutting part of the present invention;

[0031] Figure 12 This is a schematic diagram of the internal partition assembly structure of the present invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Fasteners; 101. Fixed base frame; 102. Inner frame; 103. Support roller frame; 104. Constraint side groove; 105. Mating toothed plate; 2. Torsion section; 201. Torsion disc; 202. Adjustment groove; 203. Fixed ring frame; 204. Outer frame; 205. Torsion motor; 206. Mating gear; 207. Side fixing block; 208. Displacement gear; 209. Displacement motor; 3. Clamping section; 301. Fixed base block; 302. Tilting frame; 303. Displacement groove; 304. Clamping screw; 305. Clamping block; 4. Cutting section; 401. Displacement plate; 402. Telescopic cylinder; 403. Inner fixing rod; 404. Outer support frame; 405. Mounting frame; 406. Gun holder; 407. Cutting gun body; 5. Inner partition; 501. Connecting hinge; 502. Flip flexible plate; 503. Splash guard plate; 504. Contact moving plate; 505. Movable toggle head; 506. Adjusting screw; 507. Matching frame. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1 - Figure 12A forging cutting device includes a fastener part 1, a torsion part 2 on the outside of the fastener part 1, the torsion part 2 including a torsion disc 201, an adjustment groove 202 on the outer wall of the torsion disc 201, a fixed ring frame 203 rotatably connected inside the adjustment groove 202, a clamping part 3 on the inner side of the fastener part 1, and a cutting part 4 on the outside of the torsion part 2. The cutting part 4 includes a displacement plate 401, a telescopic cylinder 402 fixedly connected to the displacement plate 401, an inner fixing rod 403 fixedly connected to the displacement plate 401, an inner partition part 5 inside the cutting part 4, the inner partition part 5 including two mating hinges 501, both mating hinges 501 being rotatably connected to the inner fixing rod 403, a flipping flexible plate 502 fixedly connected to the two mating hinges 501, a splash guard plate 503 fixedly inserted into the built-in groove of the flipping flexible plate 502, and two contact moving plates 504 fixedly connected to the outer wall of the mating hinges 501.

[0036] The fastener 1 includes a fixed base frame 101, an inner frame 102 is fixedly connected inside the fixed base frame 101, two sets of support roller frames 103 are fixedly connected to the inner side of the inner frame 102, two constraint side grooves 104 are opened on the fixed base frame 101, and two mating tooth plates 105 are fixedly connected to the outer side of the fixed base frame 101.

[0037] The torsion disc 201 has a toothed disc on its end face and three shaft holes. Two outer brackets 204 are fixed to the outer wall of the fixing ring 203. A rectangular plate is fixed to the bottom of each of the two outer brackets 204. The rectangular plates of the two outer brackets 204 are slidably connected in the corresponding two constraint side grooves 104. A torsion motor 205 is fixed to the bottom of the torsion disc 201. The motor shaft of the torsion motor 205 is connected to a mating gear 206. The mating gear 206 is connected to the toothed disc of the torsion disc 201 through a snap-fit ​​connection.

[0038] Side fixing blocks 207 are fixedly attached to the rectangular plates of the two outer brackets 204. The interior of each side fixing block 207 is provided with a rotating groove. A displacement gear 208 is rotatably connected in the rotating groove of each side fixing block 207. Each displacement gear 208 is connected to the corresponding mating tooth plate 105 through a snap-fit. A displacement motor 209 is fixedly attached to the exterior of each side fixing block 207. The motor shafts of each displacement motor 209 are connected to the corresponding displacement gear 208.

[0039] In this embodiment, the fixed base frame 101 is fixed, and the adjustment groove 202 of the torsion disc 201 is assembled with the fixed ring frame 203 to ensure that the torsion disc 201 can rotate flexibly around the fixed ring frame 203. The rectangular plate at the bottom of the outer frame 204 is slid into the constraint side groove 104, and the displacement gear 208 is installed in the side fixing block 207 so that the displacement gear 208 precisely meshes with the mating tooth plate 105. The cylindrical forging is hoisted onto the support roller frame 103 by external equipment, so that the axis of the forging is parallel to the axis of the support roller frame 103. The torsion motor 205 is started, and the mating gear 206 drives the torsion disc 201 to rotate around the fixed ring frame 203. This allows for angle adjustment of the cutting gun body 407; simultaneously, the displacement motor 209 drives the displacement gear 208 to roll along the mating tooth plate 105, driving the torsion part 2 and the cutting part 4 to translate as a whole, so that the cutting gun head moves along the preset arc surface trajectory. Through the synergistic effect of the torsion part 2, the torsion motor 205 drives the mating gear 206 to mesh with the toothed disc of the torsion disk 201, realizing the rotational adjustment of the torsion disk 201 around the fixed ring frame 203. When cutting the arc surface of cylindrical forgings or non-through holes distributed along the arc surface, this solves the problem that the equipment cannot adjust the cutting trajectory in real time according to the curvature of the arc surface, resulting in a large deviation between the cutting path and the preset contour.

[0040] Example 2: Please refer to Figure 1 - Figure 12 As shown, the clamping part 3 includes a fixed base block 301, which is fixedly connected to the inside of the fixed base frame 101. A flipping groove is provided in the fixed base block 301. A flipping frame 302 is rotatably connected in the flipping groove of the fixed base block 301. Two displacement grooves 303 are provided in the inside of the flipping frame 302. The two displacement grooves 303 are connected to each other through shaft holes. A clamping screw 304 is rotatably connected in the shaft holes of the two displacement grooves 303. The clamping screw 304 is provided with bidirectional threads. A clamping block 305 is connected to each bidirectional thread of the clamping screw 304. The two clamping blocks 305 are slidably connected in the corresponding displacement grooves 303.

[0041] The displacement plate 401 is provided with a shaft hole, and the telescopic shaft of the telescopic cylinder 402 extends out from the shaft hole of the displacement plate 401. The telescopic shaft of the telescopic cylinder 402 is fixedly connected to the torsion disk 201. A spring is provided between the displacement plate 401 and the torsion disk 201, and the inner fixing rod 403 is slidably connected in the corresponding shaft hole of the torsion disk 201.

[0042] An outer support frame 404 is fixedly connected to the displacement plate 401. The outer support frame 404 is slidably connected to the corresponding shaft hole of the torsion plate 201. A mounting bracket 405 is fixedly connected to the outer support frame 404. A gun holder 406 is fixedly connected to the mounting bracket 405. A cutting gun body 407 is fixedly connected inside the gun holder 406.

[0043] In this embodiment, the fixed base block 301 is welded to a preset position inside the fixed base frame 101. The flipping frame 302 is connected to the flipping groove of the fixed base block 301 through a bearing, ensuring that the flipping frame 302 can be freely flipped to a horizontal or vertical state. The clamping screw 304 is rotated to check the smooth sliding of the two clamping blocks 305 in the displacement groove 303, ensuring good synchronization of the bidirectional threaded transmission. The shaft hole of the displacement plate 401 is matched with the telescopic shaft of the telescopic cylinder 402, and the end of the telescopic shaft is rigidly connected to the torsion disk 201. A return spring is installed between the displacement plate 401 and the torsion disk 201. Based on automatic or semi-automatic electric arc cutting or plasma arc cutting technology... The cutting gun body 407 is fixed to the mounting bracket 405 by the gun holder 406. The flipping frame 302 is rotated to a horizontal state. The clamping screw 304 is rotated to drive the two clamping blocks 305 to move towards each other along the displacement groove 303 until the clamping blocks 305 are tightly fitted with the inner wall of the forging, thus completing the radial centering clamping of the forging. The telescopic cylinder 402 extends its telescopic shaft, pushing the displacement plate 401, the outer support frame 404 and the cutting gun body 407 to move synchronously towards the forging. The inner fixing rod 403 slides along the shaft hole of the torsion plate 201 with the displacement plate 401, and the return spring is compressed. When the cutting gun head contacts the surface of the forging, it continues to feed according to the preset depth to complete the cutting of the non-through hole.

[0044] Example 3: Please refer to Figure 1 - Figure 12 As shown, each of the two mating hinges 501 has two shaft holes, the inside of the flip flexible plate 502 has an internal groove, and each of the two contact moving plates 504 is movably connected with a ball. Each of the two shaft holes of the two mating hinges 501 is rotatably connected with a movable toggle head 505. Each of the two movable toggle heads 505 has a shaft hole, and each of the two movable toggle heads 505 with shaft holes is rotatably connected with an adjusting screw 506. Each of the two movable toggle heads 505 without shaft holes is fixedly connected with a mating bracket 507. Each of the two mating brackets 507 has a threaded through hole, and each of the two mating brackets 507 is connected to the corresponding adjusting screw 506 through the threaded through hole.

[0045] In this embodiment, the mating flap 501 is sleeved on the inner fixing rod 403. The movable toggle head 505 is connected to the shaft hole of the mating flap 501 by a pin. After the adjusting screw 506 is threadedly connected to the mating bracket 507, the opening and closing angle adjustment range of the mating flap 501 is tested. By rotating the adjusting screw 506, the opening angle of the mating flap 501 can be finely adjusted so that the contact plate 504 contacts the inner wall of the forging. When the flipping flexible plate 502 is unfolded, the anti-splash mesh plate 503 covers the back of the cutting area to block the splash generated during cutting. The waste chips are blocked. The contact plate 504 rolls with the surface of the forging through the ball, and can adaptively adjust with the change of the cutting position. The flipping flexible plate 502 drives the anti-splash mesh plate 503 to form a dynamic protective barrier, which can effectively block the high-temperature waste chips generated by electric arc or plasma arc cutting, and prevent the waste chips from splashing onto the opposite surface of the forging and causing damage. At the same time, by adjusting the threaded engagement between the screw 506 and the mating frame 507, the protection range of the anti-splash mesh plate 503 can be flexibly fine-tuned, further reducing the impact of waste chips on the surface quality of the forging.

[0046] In this invention, a forging cutting device and cutting method include the following steps:

[0047] S1: The cylindrical forging is hoisted onto the fastener 1 by external equipment, so that the forging is kept stable by the fastener 1, and the angle of the cutting part 4 is adjusted by the rotation of the torsion part 2, so that the cutting part 4 moves along the preset arc surface trajectory to achieve the cutting process of the forging.

[0048] S2: By adjusting the clamping part 3, the radial centering clamping of the forging is completed. The telescopic shaft of the telescopic cylinder 402 extends, pushing the displacement plate 401 to move synchronously towards the forging. The inner fixing rod 403 slides along the shaft hole of the torsion disk 201 with the displacement plate 401, and the return spring is compressed. When the cutting part 4 contacts the surface of the forging, it continues to feed according to the preset depth to complete the cutting of the non-through hole.

[0049] S3: By finely adjusting the opening angle of the mating page 501, the contact plate 504 is brought into contact with the inner wall of the forging, and when the flipping flexible plate 502 is unfolded, the anti-splash mesh plate 503 covers the back of the cutting area to block the waste generated during cutting.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forging cutting device, comprising a fastener section, characterized in that: The fastener has a torsion part on its exterior, which includes a torsion disc. An adjustment groove is provided on the outer wall of the torsion disc. A fixed ring frame is rotatably connected inside the adjustment groove. A clamping part is provided on the inner side of the fastener. A cutting part is provided on the exterior of the torsion part. The cutting part includes a displacement plate. A telescopic cylinder is fixedly connected to the displacement plate. An inner fixed rod is fixedly connected to the displacement plate. An inner partition is provided inside the cutting part. The inner partition includes two mating hinges. Both mating hinges are rotatably connected to the inner fixed rod. A flipping flexible plate is fixedly connected to the two mating hinges. A splash guard is fixedly inserted into the inner groove of the flipping flexible plate. Two contact moving plates are fixedly connected to the outer wall of the mating hinges. The end face of the torsion disc is provided with a toothed disc, and three shaft holes are opened on the torsion disc. Two outer brackets are fixed to the outer wall of the fixed ring frame. A rectangular plate is fixed to the bottom of each of the two outer brackets. The rectangular plates of the two outer brackets are slidably connected in the corresponding two constraint side grooves. A torsion motor is fixed to the bottom of the torsion disc. The motor shaft of the torsion motor is connected to a mating gear. The mating gear is connected to the toothed disc of the torsion disc through a snap-tooth connection. Side fixing blocks are fixed to the rectangular plates of the two outer frames. Rotating grooves are provided inside the two side fixing blocks. Displacement gears are rotatably connected in the rotating grooves of the two side fixing blocks. The two displacement gears are connected to the corresponding mating gear plates through snap teeth. Displacement motors are fixed to the outside of the two side fixing blocks. The motor shafts of the two displacement motors are connected to the corresponding displacement gears. Each of the two mating hinges has two shaft holes. The inside of the flip-up flexible plate has an internal groove. Both of the two contact plates are movably connected with balls. Each of the two shaft holes of the two mating hinges is rotatably connected with a movable toggle head. Each of the two movable toggle heads has a shaft hole. Each of the two movable toggle heads with shaft holes is rotatably connected with an adjusting screw. Each of the two movable toggle heads without shaft holes is fixedly connected with a mating frame. Each of the two mating frames has a threaded through hole. Each of the two mating frames is connected to the corresponding adjusting screw through the threaded through hole. The fastener includes a fixed base frame, an inner frame is fixedly connected inside the fixed base frame, two sets of support roller frames are fixedly connected to the inner side of the inner frame, two constraint side grooves are opened on the fixed base frame, and two mating tooth plates are fixedly connected to the outer side of the fixed base frame. The clamping part includes a fixed base block, which is fixedly connected to the inside of the fixed base frame. The fixed base block has a flip groove, and a flip frame is rotatably connected in the flip groove. The flip frame has two displacement grooves, which are connected to each other through shaft holes. A clamping screw is rotatably connected in the shaft holes of the two displacement grooves. The clamping screw has a bidirectional thread, and a clamping block is connected to each bidirectional thread of the clamping screw. The two clamping blocks are slidably connected in the corresponding displacement grooves. The displacement plate is provided with a shaft hole, and the telescopic shaft of the telescopic cylinder extends out from the shaft hole of the displacement plate. The telescopic shaft of the telescopic cylinder is fixedly connected to the torsion disk. A spring is provided between the displacement plate and the torsion disk, and the inner fixed rod is slidably connected in the corresponding shaft hole of the torsion disk. An external support frame is fixedly connected to the displacement plate. The external support frame is slidably connected to the corresponding shaft hole of the torsion plate. A mounting bracket is fixedly connected to the external support frame. A gun holder is fixedly connected to the mounting bracket. A cutting gun body is fixedly connected inside the gun holder. The combination of rotation and linear motion allows the cutting section to precisely adapt to the arc trajectory of cylindrical forgings, enabling it to cut the arc-shaped surface of cylindrical forgings or non-through holes distributed along the arc surface. The contact plate in the inner partition rolls into contact with the surface of the forging through a ball bearing, and can adaptively adjust according to the change of the cutting position. The flipping flexible plate drives the splash guard to form a dynamic protective barrier. The protective range of the splash guard can be flexibly and finely adjusted by adjusting the screw and the threaded engagement of the mounting bracket.

2. A cutting method for a forging cutting device, wherein the forging cutting device according to claim 1 is characterized in that, Includes the following steps: S1: The cylindrical forging is hoisted onto the fastener by external equipment, so that the forging is kept stable by the fastener. The angle of the cutting part is adjusted by the rotation of the torsion part, so that the cutting part moves along the preset arc trajectory to achieve the cutting process of the forging. S2: By adjusting the clamping part, the radial centering and clamping of the forging is completed. The telescopic cylinder extension shaft extends, pushing the displacement plate to move synchronously towards the forging. The inner fixing rod slides along the torsion disc shaft hole with the displacement plate, and the return spring is compressed. When the cutting part contacts the surface of the forging, it continues to feed according to the preset depth to complete the cutting of the non-through hole. S3: By finely adjusting the opening angle of the connecting plate, the contact plate is brought into contact with the inner wall of the forging, and when the flip plate is unfolded, the anti-splash mesh covers the back of the cutting area to block the waste generated during cutting.

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