Surface polishing device for special alloy steel and using method

Abstract

The invention relates to the technical field of special alloy steel polishing machining, in particular to a surface polishing device for special alloy steel and a using method. The surface polishing device comprises a machine body, and the machine body is composed of a center platform, a first bearing support and a second bearing support, the first limiting tool is used for fixing the large-opening end of the special alloy steel and is used for fixing the large-opening end of the special alloy steel from the left-right direction and the inside-outside direction; the polishing tool is located between the first limiting tool and the second limiting tool. A first loading frame is arranged on a first bearing support in a machine body; the arc-shaped grinding plate capable of adjusting the horizontal position and the height position is arranged on the center platform, so that the rotating special alloy steel is polished through the abrasive paper on the arc-shaped grinding plate, and the outer surface of the special alloy steel of a boss-shaped structure is conveniently polished by adjusting the horizontal position of the special alloy steel and the arc-shaped grinding plate.

Description

Technical Field

[0001] The invention relates to the technical field of special alloy steel polishing processing, and in particular to a surface polishing device for special alloy steel and a use method thereof. Background Art

[0002] An iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements to ordinary carbon steel. Depending on the added elements and the appropriate processing technology, special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, and non-magnetic properties can be obtained.

[0003] In order to meet the diverse use requirements, the existing special alloy steel is mostly manufactured into irregular structures, and the boss structure is more common. It is different from the conventional cylindrical structure. A special alloy steel pipe cutting machine disclosed in CN219542258U can be used. Through the setting of the polishing block in the polishing assembly, the welding position can be polished and ground in time. Through the setting of two sets of extrusion springs, the moving plate can be squeezed so that the polishing block is in close contact with the outer surface of the steel pipe, thereby improving its polishing and grinding effect. The same as the steel pipe surface polishing equipment disclosed in announcement number CN106863102B, it adopts the method of rotating the steel pipe after centering the steel pipe and then controlling two polishing wheels to polish the steel pipe. In order to meet the length requirements, the existing hollow boss-shaped special alloy steels are mostly lengthened by multi-section welding, which will result in multiple uneven weld ring marks on the surface of the special alloy steel after welding. The above-mentioned methods are all achieved by limiting and fixing the steel pipes of the same overall thickness, and a single form of inside-out and left-right clamping structure is adopted. However, for the hollow boss-shaped steel pipes with different thicknesses at both ends, there are great difficulties in fixing, and it is difficult to achieve corresponding locking of the two ends of the steel pipe. In the process of polishing, the steel pipe will produce a conflicting force with the polishing parts. The clamping action in a single direction can easily cause loosening accidents, and will also increase the difficulty of polishing multiple weld rings between the large end and the small end. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is difficult to perform limit adjustment on special alloy steel, which affects the polishing quality, and to propose a surface polishing device for special alloy steel and a method of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A surface polishing device for special alloy steel comprises a body, wherein the body is composed of a central platform, a first load-bearing bracket and a second load-bearing bracket which are symmetrically distributed on the left and right sides; The machine body is provided with: A first load-bearing frame, wherein the first load-bearing frame is rotatably mounted on a first load-bearing bracket; The first limiting tooling for fixing the large end of special alloy steel, the first limiting tooling fixes the large end of special alloy steel from the left - right, inside - outside directions; The machine body is provided with through the second load - bearing bracket: A driving hydraulic cylinder, the driving hydraulic cylinder is fixedly installed on the second load - bearing bracket; An arc - groove guide rail driven by the driving hydraulic cylinder, the arc - groove guide rail is slidably installed on the central platform, and the arc - groove guide rail is fixedly connected to the output end of the driving hydraulic cylinder; A second load - bearing frame, the second load - bearing frame is arranged on the central platform and the second load - bearing bracket through the arc - groove guide rail; The second limiting tooling for fixing the small end of special alloy steel, the second limiting tooling fixes the small end of special alloy steel from the right - side and inside - direction; The machine body is provided with through the central platform: A polishing tooling for polishing the outer surface of special alloy steel, the polishing tooling is located between the first limiting tooling and the second limiting tooling.

[0006] Preferably, the central platform is horizontally arranged, the first load - bearing bracket and the second load - bearing bracket are symmetrically welded at the left - right two ends of the central platform, and the first load - bearing bracket and the second load - bearing bracket are P - shaped structures arranged facing each other.

[0007] Preferably, the first load - bearing frame is composed of a first load - bearing rotating shaft with a hollow structure, a U - shaped frame with openings at both ends and an opening extension plate: The first load - bearing rotating shaft is rotatably installed on the first load - bearing bracket, and the U - shaped frame is fixedly installed at one end of the first load - bearing rotating shaft facing the second load - bearing bracket, and the opening extension plate is integrally connected to the U - shaped frame.

[0008] Preferably, the first limiting tooling includes: A first driving cylinder and a first guiding block fixedly connected to the output end of the first driving cylinder, the first driving cylinder is fixedly installed inside the first load - bearing rotating shaft, and the first guiding block fixedly connected to the output end of the first driving cylinder is slidably sleeved in the first load - bearing rotating shaft; A steering swing rod actively pulled by the first guiding block, the steering swing rod is rotatably installed in the opening extension plate; A telescopic sliding rod actively pulled by the steering swing rod, the telescopic sliding rod is slidably sleeved on the U - shaped frame; A limiting flange cover plate extending into the large end of special alloy steel, the limiting flange cover plate is integrally connected to the telescopic sliding rod; A reverse sleeve actively pulled by the limiting flange cover plate, the reverse sleeve is movably installed on the U - shaped frame and sleeved on the large end of special alloy steel.

[0009] Preferably, a first connecting rod is pin-connected between the first guiding block and one end of the steering swing rod; A traction long hole is formed at the other end of the steering swing rod. A driven long hole for slidably sleeving the steering swing rod is formed in the telescopic slide rod, and a traction long bolt slidably sleeved in the traction long hole is integrally connected in the driven long hole; A steering pulley is fixedly installed in the C-shaped frame. A traction rope passing through the steering pulley is fixedly connected between the limit flange cover plate and the reverse sleeve; The reverse sleeve is composed of a strong spring, a limit block fixedly connected to the strong spring, a cylinder body and a funnel through hole. The strong spring is fixedly installed in the openings on both sides of the C-shaped frame. The limit block fixedly connected to the strong spring is slidably sleeved in the openings on both sides of the C-shaped frame. The cylinder body is integrally connected to the limit block, and the funnel through hole is formed in the cylinder body.

[0010] Preferably, the second load-bearing frame is composed of a central sleeve, a driving motor, a second load-bearing rotating shaft fixedly connected to the output end of the driving motor, a guiding disc rotatably sleeved in the arc-shaped groove guide rail, and a limit boss extending into the small end of the special alloy steel: The central sleeve is slidably sleeved in the second load-bearing bracket. The driving motor is fixedly installed on the central sleeve. The second load-bearing rotating shaft fixedly connected to the output end of the driving motor is rotatably sleeved in the central sleeve. The guiding disc is fixedly sleeved on the second load-bearing rotating shaft. The limit boss is fixedly installed at one end of the second load-bearing rotating shaft facing the first load-bearing bracket, and circumferentially equally spaced telescopic notches are formed in the limit boss.

[0011] Preferably, the second limiting tooling includes: A second driving cylinder fixedly installed in the second load-bearing rotating shaft; A second guiding block movably pulled by the second driving cylinder, which is radially slidably sleeved in the guiding disc; A pressurizing member movably pulled by the second guiding block, which is slidably sleeved in the second load-bearing rotating shaft and the limit boss; A flipping rotating shaft and a limit abutting block slidably abutted against the pressurizing member. The flipping rotating shaft is rotatably installed in the limit boss through the telescopic notch. The limit abutting block is integrally connected to the flipping rotating shaft and is located in the telescopic notch; A torsion spring fixedly connecting the limit abutting block on the inner wall of the limit boss and sleeved on the flipping rotating shaft.

[0012] Preferably, a second connecting rod is pin-connected between the second driving cylinder and the second guiding block, and a third connecting rod is pin-connected between the second guiding block and the pressurizing member; The pressurizing member is integrally connected by a guide rod and a wedge head plate slidably abutted against the limit abutting block: The guide rod is slidably sleeved on the second load-bearing rotating shaft and the limiting boss, and the wedge head plate is slidably sleeved in the limiting boss.

[0013] Preferably, the polishing tooling includes: A moving frame which is slidably sleeved in the central platform; A third driving cylinder which is fixedly installed on the moving frame; A lifting platform which is slidably sleeved on the moving frame, and the lifting platform is fixedly connected with the output end of the third driving cylinder; An arc-shaped grinding plate for embedding abrasive paper, and the arc-shaped grinding plate is fixedly installed on the lifting platform.

[0014] The using method of the above surface polishing device for special alloy steel includes the following steps: Step S1, make the small end of the special alloy steel pass through the reverse sleeve and move towards the side of the limiting boss, so that the limiting boss is sleeved inside the small end of the special alloy steel, control the driving hydraulic cylinder to start, and the output end of the driving hydraulic cylinder drives the guiding disc to move linearly through the arc-shaped groove guide rail, so that the limiting boss extends into the small end of the special alloy steel, and further drives the special alloy steel to extend along the reverse sleeve; Step S2, control the first driving cylinder and the second driving cylinder to start: The first driving cylinder drives the first guide block to extend. The first guide block supports the steering swing rod through the first connecting rod. The steering swing rod squeezes the telescopic slide rod through the traction long hole, the driven long hole and the traction bolt. The telescopic slide rod drives the limiting flange cover plate to move towards the large end of the special alloy steel until they contact. The limiting flange cover plate pulls the reverse sleeve through the traction rope, so that the reverse sleeve moves along the C-shaped frame and squeezes the strong spring. The reverse sleeve is sleeved on the large end of the special alloy steel through the funnel through hole until it is fixed; The second driving cylinder squeezes the second guide block to move radially through the second connecting rod. The second guide block squeezes the pressure increasing part through the third connecting rod. The pressure increasing part extending into the limiting boss squeezes the limiting block through the wedge head plate, so that the limiting block deflects outwards to the expansion along the telescopic notch and abuts against the inner wall of the small end of the special steel alloy; Step S3, control the moving frame to move horizontally on the central platform to the position where the special alloy steel needs to be polished, control the third driving cylinder to start, and lift the arc-shaped grinding plate embedded with abrasive paper to the position where it fits the special alloy steel through the lifting platform; Step S4, control the driving motor to start, and support the special alloy steel to rotate by using the second load-bearing frame and the first load-bearing frame, so as to make active contact with the abrasive paper in the arc-shaped grinding plate to achieve polishing.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention arranges a first load-bearing frame on a first load-bearing frame in a machine body, and arranges a second load-bearing frame on a second load-bearing frame in the machine body. A driving motor is arranged in the second load-bearing frame to support the boss-shaped special alloy steel to rotate and move, so that the arc-shaped grinding plate in the polishing tooling can polish the rotating special alloy steel.

[0016] 2. The present invention arranges a first guide block driven by a first driving cylinder on the first load frame, and uses a steering pulley and a traction rope to arrange a limiting convex round cover plate and a reverse sleeve for fixing the large mouth end of the special alloy steel, so as to limit and fix the large mouth end of the special alloy steel from the left and right and inside and outside directions.

[0017] 3. The present invention arranges a second guide block driven by a second driving cylinder on the second load frame to drive the booster to traction, and utilizes the booster to apply pressure to drive the limit abutment plate elastically supported by the torsion spring, so that the opened limit abutment plate fixes and supports the inner wall of the small end of the special alloy steel, so as to fix the small end of the special alloy steel.

[0018] 4. The present invention arranges an arc-shaped grinding plate on the central platform that can be adjusted in horizontal and height positions, so that the sandpaper on the arc-shaped grinding plate can be used to polish the rotating special alloy steel. By adjusting the horizontal position of the arc-shaped grinding plate, it is convenient to perform multi-point grinding operations on the welding ring on the outer surface of the hollow boss-shaped special alloy steel after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a surface polishing device for special alloy steel proposed by the present invention; Figure 2 A bottom view of a surface polishing device for special alloy steel proposed by the present invention; Figure 3 A cross-sectional view of a surface polishing device for special alloy steel proposed by the present invention; Figure 4 A schematic diagram of a surface polishing device for special alloy steel proposed by the present invention; Figure 5 This is a schematic diagram of the installation of the first limit fixture of a surface polishing device for special alloy steel proposed by the present invention; Figure 6 A schematic diagram of a first load frame of a surface polishing device for special alloy steel proposed by the present invention; Figure 7 A schematic diagram of a second load frame of a surface polishing device for special alloy steel proposed by the present invention; Figure 8 This is a schematic diagram of a first position limiting tooling of a surface polishing device for special alloy steel proposed by the present invention; Fig. 9Schematic diagram of the limiting convex circular cover plate of a surface polishing device for special alloy steel proposed by the present invention; Fig.10 Cross-sectional view of the reverse sleeve of a surface polishing device for special alloy steel proposed by the present invention; Fig.11 Schematic diagram of the limiting convex platform of a surface polishing device for special alloy steel proposed by the present invention; Fig.12 Cross-sectional view of the limiting convex platform of a surface polishing device for special alloy steel proposed by the present invention; Fig.13 Schematic diagram of the second limiting tooling of a surface polishing device for special alloy steel proposed by the present invention; Fig.14 Schematic diagram of the pressure increasing part and the limiting abutment plate of a surface polishing device for special alloy steel proposed by the present invention; Fig.15 Schematic diagram of special alloy steel; Fig.16 Cross-sectional view of special alloy steel.

[0020] In the figure: 1. Machine body; 101. Central platform; 102. First load-bearing bracket; 103. Second load-bearing bracket; 2. First load carrier; 201. First load-bearing rotating shaft; 202. C-shaped frame; 203. Opening extension plate; 3. Driving hydraulic cylinder; 4. Arc groove guide rail; 5. Second load carrier; 501. Central sleeve; 502. Driving motor; 503. Second load-bearing rotating shaft; 504. Guide disc; 505. Limiting convex platform; 506. Telescopic notch; 6. First limiting tooling; 601. First driving cylinder; 602. First guide block; 603. Steering swing rod; 60301. Traction long hole; 604. Telescopic sliding rod; 60401. Driven long hole; 60402. Traction long bolt; 605. Limiting flange cover plate; 606. First connecting rod; 607. Steering pulley; 608. Reverse sleeve; 60801. Strong spring; 60802. Limiting block; 60803. Cylinder body; 60804. Funnel through hole; 609. Traction rope; 7. Second limiting tooling; 701. Second driving cylinder; 702. Second guide block; 703. Pressure increasing part; 70301. Guide rod; 70302. Wedge head plate; 704. Second connecting rod; 705. Third connecting rod; 706. Tipping rotating shaft; 707. Limiting abutting block; 708. Torsion spring; 8. Polishing tooling; 801. Moving frame; 802. Third driving cylinder; 803. Lifting table; 804. Arc-shaped grinding plate. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Refer to Fig.15 And Fig.16 This special alloy steel can be formed by one-time welding of a multi-stage boss structure. There are uneven solder joints and welding rings at the welding parts of every two boss structures. To ensure the smoothness of the outer surface of the special alloy steel, the formed special alloy steel can be limited and fixed. The overall structure of the special alloy steel is a hollow boss shape, with different thicknesses at both ends, and the two ends of the special alloy steel are interconnected. By fixing both ends of the special alloy steel and driving its rotation, it is convenient to polish the surface of the special alloy steel with height and thickness differences.

[0023] Refer to Figure 1-Figure 14 As shown in the figure, a surface polishing device for a special alloy steel includes a machine body 1. The machine body 1 is composed of a central platform 101, first load-bearing brackets 102 and second load-bearing brackets 103 symmetrically distributed on the left and right. Specifically, refer to the attached Figure 3 And the attached Figure 4 As shown in the figure, the central platform 101 is horizontally arranged. The first load-bearing brackets 102 and the second load-bearing brackets 103 are symmetrically welded to the left and right ends of the central platform 101, and the first load-bearing brackets 102 and the second load-bearing brackets 103 are P-shaped structures arranged facing each other, providing stable support for the central platform 101 by setting the symmetric first load-bearing brackets 102 and second load-bearing brackets 103.

[0024] The first part, specifically refer to the attached Figure 5 As shown in the figure, the machine body 1 is provided with a first load-bearing frame 2 and a first limiting tooling 6 for fixing the large end of the special alloy steel through the first load-bearing bracket 102.

[0025] Specifically refer to the attached Figure 6 As shown in the figure, the first load-bearing frame 2 is rotatably installed on the first load-bearing bracket 102. The first load-bearing frame 2 is composed of a first load-bearing rotating shaft 201 with a hollow structure, a U-shaped frame 202 with openings at both ends and an opening extension plate 203: The first load-bearing rotating shaft 201 is rotatably installed on the first load-bearing bracket 102, and the U-shaped frame 202 is fixedly installed at one end of the first load-bearing rotating shaft 201 facing the second load-bearing bracket 103. The opening extension plate 203 is integrally connected to the U-shaped frame 202. It should be noted that the first load-bearing rotating shaft 201 and the U-shaped frame 202 are concentrically arranged. The number of the opening extension plates 203 is two, so as to symmetrically pull or press the limit flange cover plate 605, enabling the limit flange cover plate 605 to linearly expand and contract, and ensuring that the limit flange cover plate 605 fits with the large end of the special alloy steel.

[0026] Specifically refer to the attached instruction manual Figure 8 , the first limit tooling 6 fixes the large end of the special alloy steel in the left-right, inside-out directions. The first limit tooling 6 includes a first driving cylinder 601, a first guide block 602 fixedly connected to the output end of the first driving cylinder 601, a steering swing rod 603 movably pulled by the first guide block 602, a telescopic slide rod 604 movably pulled by the steering swing rod 603, a limit flange cover plate 605 extending into the large end of the special alloy steel, and a reverse sleeve 608 movably pulled by the limit flange cover plate 605. Specifically: The first driving cylinder 601 is fixedly installed inside the first load-bearing rotating shaft 201. The first guide block 602 fixedly connected to the output end of the first driving cylinder 601 is slidably sleeved in the first load-bearing rotating shaft 201. It is worth noting that the first load-bearing rotating shaft 201 is of a hollow structure, and a long opening corresponding to the opening extension plate 203 is provided in the first load-bearing rotating shaft 201.

[0027] The steering swing rod 603 is rotatably installed in the opening extension plate 203. The middle end of the steering swing rod 603 is installed at the opening position of the opening extension plate 203. Under the traction of the first guide block 602, the steering swing rod 603 makes a lever-type deflection.

[0028] The telescopic slide rod 604 is slidably sleeved on the U-shaped frame 202.

[0029] Specifically refer to the attached instruction manual Fig. 9 , the limit flange cover plate 605 is integrally connected to the telescopic slide rod 604. The limit flange cover plate 605 has a two-sided structure and is composed of an outer plate and an inner ring that are concentrically arranged. The outer plate abuts against the large end of the special alloy steel, and the inner ring is sleeved inside the large end of the special alloy steel.

[0030] The reverse sleeve 608 is movably installed on the U-shaped frame 202 and is sleeved on the large end of the special alloy steel. Further explanation: A steering pulley 607 is fixedly installed in the U-shaped frame 202. A traction rope 609 passing through the steering pulley 607 is fixedly connected between the limit flange cover plate 605 and the reverse sleeve 608. When the limit flange cover plate 605 is pushed towards the large end of the special alloy steel, the reverse sleeve 608 is pulled by the traction rope 609, causing the limit flange cover plate 605 and the reverse sleeve 608 to move towards each other; The reverse sleeve 608 is composed of a strong spring 60801, a limit block 60802 fixedly connected to the strong spring 60801, a cylinder body 60803 and a funnel through hole 60804. The strong spring 60801 is fixedly installed in the openings on both sides of the U-shaped frame 202. The limit block 60802 fixedly connected to the strong spring 60801 is slidably sleeved in the openings on both sides of the U-shaped frame 202. The cylinder body 60803 is integrally connected to the limit block 60802. The funnel through hole 60804 is opened in the cylinder body 60803. For details, refer to the attached Figure 3 to the attached Fig.10 During the process of moving the limit flange cover plate 605 and the reverse sleeve 608 towards each other, since the large end of the special alloy steel gradually fits with the shrinking funnel through hole 60804, the large end of the special alloy steel is sleeved.

[0031] The second part, for details, refer to the attached Figure 7 and the attached Fig.11 - the attached Fig.14 The machine body 1 is provided with a driving hydraulic cylinder 3 through the second load-bearing bracket 103, an arc groove guide rail 4 driven by the driving hydraulic cylinder 3, a second load-bearing frame 5, and a second limit tooling 7 for fixing the small end of the special alloy steel: The driving hydraulic cylinder 3 is fixedly installed on the second load-bearing bracket 103.

[0032] The arc groove guide rail 4 is slidably installed on the central platform 101, and the arc groove guide rail 4 is fixedly connected to the output end of the driving hydraulic cylinder 3. A long groove for slidably sleeving the arc groove guide rail 4 is horizontally opened in the central platform 101. Under the driving action of the driving hydraulic cylinder 3, the arc groove guide rail 4 drives the second load-bearing frame 5 to move horizontally, thereby adjusting the horizontal position of the special alloy steel.

[0033] For details, refer to the attached Figure 7 The second load-bearing frame 5 is arranged on the central platform 101 and the second load-bearing bracket 103 through the arc groove guide rail 4. The second load-bearing frame 5 is composed of a central sleeve 501, a driving motor 502, a second load-bearing rotating shaft 503 fixedly connected to the output end of the driving motor 502, a guiding disc 504 rotatably sleeved in the arc groove guide rail 4, and a limit boss 505 extending into the small end of the special alloy steel: The center sleeve 501 is slidably mounted in the second load-bearing bracket 103, the driving motor 502 is fixedly mounted on the center sleeve 501, the second load-bearing shaft 503 fixedly connected to the output end of the driving motor 502 is rotatably mounted in the center sleeve 501, the guide disc 504 is fixedly mounted on the second load-bearing shaft 503, the limiting boss 505 is fixedly mounted on one end of the second load-bearing shaft 503 facing the first load-bearing bracket 102, and the second load-bearing shaft 503 is driven to move horizontally through the center sleeve 501 under the driving action of the driving hydraulic cylinder 3, and the limiting boss 505 is provided with telescopic cuts 506 equidistantly distributed circumferentially, and the number of the telescopic cuts 506 is two or four, which are equidistantly distributed circumferentially.

[0034] Please refer to the instruction manual for details Fig.13 With attached Fig.14 The second limiting fixture 7 fixes the small mouth end of the special alloy steel from the right side and the inner side. The second limiting fixture 7 includes a second driving cylinder 701, a second guide block 702 movably pulled by the second driving cylinder 701, a booster 703 movably pulled by the second guide block 702, a flip shaft 706, a limiting block 707 slidingly contacting with the booster 703, and a torsion spring 708, which are specifically: The second driving cylinder 701 is fixedly installed in the second load-bearing rotating shaft 503 .

[0035] The second guide block 702 is radially slidably mounted in the guide disc 504. It should be noted that at least two circumferentially equidistant long holes are provided in the guide disc 504. The second guide block 702 is circumferentially equidistantly distributed through the long holes. The second guide block 702 moves radially under the driving action of the second driving cylinder 701.

[0036] Please refer to the instruction manual for details Fig.14 The booster 703 is slidably mounted in the second load-bearing shaft 503 and the limiting boss 505. The booster 703 is composed of a guide rod 70301 and a wedge plate 70302 that slides against the limiting block 707 and is integrally connected. The guide rod 70301 is slidably mounted in the second load-bearing shaft 503 and the limiting boss 505 , and the wedge plate 70302 is slidably mounted in the limiting boss 505 .

[0037] The flip shaft 706 is rotatably installed in the limiting boss 505 through the telescopic cutout 506 , and the limiting stopper 707 is integrally connected to the flip shaft 706 , and the limiting stopper 707 is located in the telescopic cutout 506 .

[0038] The torsion spring 708 is fixedly connected to the limit stop block 707 on the inner wall of the limit boss 505, and the torsion spring 708 is mounted on the flip shaft 706. Under the elastic force of the torsion spring 708, the limit stop block 707 is deflected and accommodated in the telescopic cut 506, and under the extrusion of the booster 703, the limit stop block 707 is opened, and the limit stop block 707 extending outside the telescopic cut 506 is in close contact with the inner wall of the small mouth end of the special alloy steel.

[0039] The third part, the machine body 1 is provided with a polishing tool 8 for polishing the outer surface of the special alloy steel through the central platform 101.

[0040] Please refer to the instruction manual for details Figure 3 The polishing tool 8 is located between the first limiting tool 6 and the second limiting tool 7, and is located below the fixed special alloy steel. The polishing tool 8 is moved between the first limiting tool 6 and the second limiting tool 7 to facilitate multi-point polishing of the welding points and welding rings between the large end and the small end. The polishing tool 8 includes a moving frame 801, a third driving cylinder 802, a lifting platform 803, and an arc-shaped grinding plate 804 for embedding sandpaper: The movable frame 801 is slidably mounted in the central platform 101. It is worth noting that by horizontally moving the movable frame 801 on the central platform 101, the arc-shaped grinding plate 804 can correspond to different positions of the special alloy steel at different horizontal positions.

[0041] The third driving cylinder 802 is fixedly mounted on the moving frame 801 .

[0042] The lifting platform 803 is slidably mounted on the moving frame 801, and the lifting platform 803 is fixedly connected to the output end of the third driving cylinder 802. It is worth noting that the lifting platform 803 can be height-adjusted according to the different coarseness and fineness of the special alloy steel.

[0043] Please refer to the instruction manual for details Figure 1 -Attached Figure 3 The arc-shaped grinding plate 804 is fixedly installed on the lifting platform 803. The arc-shaped grinding plate 804 is an arc plate structure adapted to special alloy steel, and the inner wall is an inclined structure to facilitate the embedding of sandpaper with different mesh sizes.

[0044] Based on the above implementation mode, further description is given: A first connecting rod 606 is pin-connected between the first guide block 602 and one end of the steering swing arm 603 .

[0045] Please refer to the instruction manual for details Figure 5 With attached Figure 8, at the other end of the steering swing rod 603, a traction long hole 60301 is provided. A driven long hole 60401 for slidably sleeving the steering swing rod 603 is provided in the telescopic slide rod 604, and a traction long bolt 60402 slidably sleeved in the traction long hole 60301 is integrally connected in the driven long hole 60401. The deflected steering swing rod 603 pulls the telescopic slide rod 604 through the traction long bolt 60402, so that the telescopic slide rod 604 horizontally expands and contracts.

[0046] A second connecting rod 704 is pin-connected between the second driving cylinder 701 and the second guiding block 702, and a third connecting rod 705 is pin-connected between the second guiding block 702 and the pressurizing member 703.

[0047] It should be noted that the specific model specifications of the driving hydraulic cylinder 3, the first driving cylinder 601, the second driving cylinder 701 and the driving motor 502 need to be selected according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in the field, so it will not be elaborated.

[0048] The functional principle of the present invention can be described through the following operation modes: First, make the small end of the special alloy steel pass through the reverse sleeve 608 and move towards the side of the limit boss 505, so that the limit boss 505 is sleeved inside the small end of the special alloy steel. Control the driving hydraulic cylinder 3 to start. The output end of the driving hydraulic cylinder 3 drives the guiding disc 504 to move linearly through the arc groove guide rail 4, so that the limit boss 505 extends into the small end of the special alloy steel, and further drives the special alloy steel to extend along the reverse sleeve 608, so as to initially sleeve the special alloy steel on the machine body 1.

[0049] Secondly, control the first driving cylinder 601 and the second driving cylinder 701 to start. This process is divided into two stages of limiting and fixing the two ends of the special alloy steel: In the first stage, the first driving cylinder 601 drives the first guiding block 602 to extend. The first guiding block 602 supports the steering swing rod 603 through the first connecting rod 606. The steering swing rod 603 squeezes the telescopic slide rod 604 through the traction long hole 60301, the driven long hole 60401 and the traction long bolt 60402. The telescopic slide rod 604 drives the limit flange cover plate 605 to move towards the large end of the special alloy steel until they contact. The limit flange cover plate 605 pulls the reverse sleeve 608 through the traction rope 609, so that the reverse sleeve 608 moves along the C-shaped frame 202 and squeezes the strong spring 60801. The reverse sleeve 608 is sleeved on the large end of the special alloy steel through the funnel through hole 60804 until it is fixed. It should be noted that the width of the reverse sleeve 608 is small, and only a small range of the large end of the special alloy steel will be sleeved to reduce the polishing blind area caused by the reverse sleeve 608 sleeving the large end of the special alloy steel; In the second stage, the second driving cylinder 701 squeezes the second guide block 702 to move radially through the second connecting rod 704, and the second guide block 702 squeezes the booster 703 through the third connecting rod 705. The booster 703 extending into the limiting boss 505 squeezes the limiting stop block 707 through the wedge plate 70302, so that the limiting stop block 707 deflects to the outside of the telescopic cutout 506 to unfold and abuts against the inner wall of the small mouth end of the special steel alloy. The limiting boss 505 is pushed into the small mouth end of the special alloy steel to preliminarily limit the special alloy steel, and then the small mouth end of the special alloy steel is supported and fixed by the limiting stop block 707.

[0050] Again, on the central platform 101, the movable frame 801 is controlled to move horizontally to the position where the special alloy steel needs to be polished, the third driving cylinder 802 is controlled to open, and the arc-shaped grinding plate 804 embedded with sandpaper is supported by the lifting platform 803 to be lifted to the position fitting the special alloy steel.

[0051] Finally, the control driving motor 502 is turned on, and the second load frame 5 and the first load frame 2 are used to support the special alloy steel to rotate, so as to realize polishing by active contact with the sandpaper in the arc-shaped grinding plate 804. By adjusting the horizontal and height positions of the arc-shaped grinding plate 804, the surface of the special alloy steel is polished accordingly. The rotating special alloy steel is in dynamic contact with the arc-shaped grinding plate 804, and the sandpaper is used to realize polishing of the multi-point welding ring between the large end and the small end.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A surface polishing device for special alloy steel, comprising a body (1), characterized in that: The body (1) is composed of a central platform (101), a first load-bearing bracket (102) and a second load-bearing bracket (103) that are symmetrically distributed on the left and right; The body (1) is provided with the following through the first load-bearing bracket (102): A first load-carrying frame (2), and the first load-carrying frame (2) is rotatably installed on the first load-bearing bracket (102); A first limiting tooling (6) for fixing the large end of the special alloy steel, and the first limiting tooling (6) fixes the large end of the special alloy steel from the left-right, inside-outside directions; The body (1) is provided with the following through the second load-bearing bracket (103): A driving hydraulic cylinder (3), and the driving hydraulic cylinder (3) is fixedly installed on the second load-bearing bracket (103); An arc-shaped groove guide rail (4) driven by the driving hydraulic cylinder (3), and the arc-shaped groove guide rail (4) is slidably installed on the central platform (101), and the arc-shaped groove guide rail (4) is fixedly connected to the output end of the driving hydraulic cylinder (3); A second load-carrying frame (5), and the second load-carrying frame (5) is arranged on the central platform (101) and the second load-bearing bracket (103) through the arc-shaped groove guide rail (4); A second limiting tooling (7) for fixing the small end of the special alloy steel, and the second limiting tooling (7) fixes the small end of the special alloy steel from the right and inside directions; The body (1) is provided with the following through the central platform (101): A polishing tooling (8) for polishing the outer surface of the special alloy steel, and the polishing tooling (8) is located between the first limiting tooling (6) and the second limiting tooling (7).

2. A surface polishing device for special alloy steel according to claim 1, characterized in that: The central platform (101) is horizontally arranged, the first load-bearing bracket (102) and the second load-bearing bracket (103) are symmetrically welded to the left and right ends of the central platform (101), and the first load-bearing bracket (102) and the second load-bearing bracket (103) are P-shaped structures arranged facing each other.

3. A surface polishing device for special alloy steel according to claim 2, characterized in that: The first load-carrying frame (2) consists of a first load-bearing rotating shaft (201) with a hollow structure, a U-shaped frame (202) with openings at both ends and an opening extension plate (203) 组成: The first load-bearing rotating shaft (201) is rotatably installed on the first load-bearing bracket (102), and the U-shaped frame (202) is fixedly installed at one end of the first load-bearing rotating shaft (201) facing the second load-bearing bracket (103), and the opening extension plate (203) is integrally connected to the U-shaped frame (202).

4. A surface polishing device for special alloy steel according to claim 3, characterized in that: The first limiting tooling (6) includes: A first driving cylinder (601) and a first guide block (602) fixedly connected to the output end of the first driving cylinder (601), the first driving cylinder (601) is fixedly installed inside the first load-bearing rotating shaft (201), and the first guide block (602) fixedly connected to the output end of the first driving cylinder (601) is slidably sleeved in the first load-bearing rotating shaft (201); A steering swing rod (603) actively pulled by the first guide block (602), and the steering swing rod (603) is rotatably installed in the opening extension plate (203); A telescopic sliding rod (604) actively pulled by the steering swing rod (603), and the telescopic sliding rod (604) is slidably sleeved on the U-shaped frame (202); A limiting flange cover plate (605) extending into the large end of the special alloy steel, and the limiting flange cover plate (605) is integrally connected to the telescopic slide rod (604); A reverse sleeve (608) actively pulled by the limiting flange cover plate (605), and the reverse sleeve (608) is movably installed on the C-shaped frame (202), and the reverse sleeve (608) is sleeved on the large end of the special alloy steel.

5. A surface polishing device for special alloy steel according to claim 4, wherein A first connecting rod (606) is pin-connected between the first guiding block (602) and one end of the steering swing rod (603); A traction long hole (60301) is formed at the other end of the steering swing rod (603), a driven long hole (60401) for slidably sleeving the steering swing rod (603) is formed in the telescopic slide rod (604), and a traction long bolt (60402) slidably sleeved in the traction long hole (60301) is integrally connected in the driven long hole (60401); A steering pulley (607) is fixedly installed in the C-shaped frame (202), and a traction rope (609) passing through the steering pulley (607) is fixedly connected between the limiting flange cover plate (605) and the reverse sleeve (608); The reverse sleeve (608) is composed of a strong spring (60801), a limiting block (60802) fixedly connected to the strong spring (60801), a cylinder body (60803) and a funnel through hole (60804). The strong spring (60801) is fixedly installed in the openings on both sides of the C-shaped frame (202), and the limiting block (60802) fixedly connected to the strong spring (60801) is slidably sleeved in the openings on both sides of the C-shaped frame (202). The cylinder body (60803) is integrally connected to the limiting block (60802), and the funnel through hole (60804) is formed in the cylinder body (60803).

6. A surface polishing device for special alloy steel according to claim 5, characterized in that: The second load-bearing frame (5) consists of a central sleeve (501), a driving motor (502), a second load-bearing rotating shaft (503) fixedly connected to the output end of the driving motor (502), a guiding disc (504) rotatably sleeved in the arc-shaped groove guide (4), and a limiting boss (505) extending into the small end of the special alloy steel: The central sleeve (501) is slidably sleeved in the second load-bearing bracket (103), the driving motor (502) is fixedly installed on the central sleeve (501), the second load-bearing rotating shaft (503) fixedly connected to the output end of the driving motor (502) is rotatably sleeved in the central sleeve (501), the guiding disc (504) is fixedly sleeved on the second load-bearing rotating shaft (503), the limiting boss (505) is fixedly installed at one end of the second load-bearing rotating shaft (503) facing the first load-bearing bracket (102), and circumferentially equally spaced telescopic cuts (506) are formed in the limiting boss (505).

7. A surface polishing device for special alloy steel according to claim 6, characterized in that: The second limiting tooling (7) includes: A second driving cylinder (701), and the second driving cylinder (701) is fixedly installed in the second load-bearing rotating shaft (503); A second guide block (702) movably pulled by a second driving cylinder (701), wherein the second guide block (702) is radially slidably sleeved in the guide disc (504); A pressure booster (703) movably pulled by the second guide block (702), wherein the pressure booster (703) is slidably mounted in the second load-bearing rotating shaft (503) and the limiting boss (505); The flip shaft (706) and the limit stop block (707) in sliding contact with the booster (703), the flip shaft (706) being rotatably mounted in the limit boss (505) through the telescopic cutout (506), the limit stop block (707) being integrally connected to the flip shaft (706), and the limit stop block (707) being located in the telescopic cutout (506); A torsion spring (708), wherein the torsion spring (708) is fixedly connected to a limiting stopper (707) on the inner wall of the limiting boss (505), and the torsion spring (708) is sleeved on the flip shaft (706).

8. The surface polishing device for special alloy steel according to claim 7, characterized in that: A second connecting rod (704) is pin-connected between the second driving cylinder (701) and the second guide block (702), and a third connecting rod (705) is pin-connected between the second guide block (702) and the booster (703); The pressure boosting member (703) is composed of a guide rod (70301) and a wedge head plate (70302) that slides against a limit stop block (707) and is integrally connected: The guide rod (70301) is slidably mounted in the second load-bearing rotating shaft (503) and the limiting boss (505), and the wedge head plate (70302) is slidably mounted in the limiting boss (505).

9. A surface polishing device for special alloy steel according to claim 8, characterized in that: The polishing tool (8) comprises: A movable frame (801), wherein the movable frame (801) is slidably mounted in the central platform (101); A third driving cylinder (802), wherein the third driving cylinder (802) is fixedly mounted on the moving frame (801); A lifting platform (803), wherein the lifting platform (803) is slidably mounted on the moving frame (801), and the lifting platform (803) is fixedly connected to an output end of the third driving cylinder (802); An arc-shaped grinding plate (804) for embedding sandpaper, wherein the arc-shaped grinding plate (804) is fixedly mounted on a lifting platform (803).

10. The method for using the surface polishing device for special alloy steel according to claim 9, characterized in that: The method of use comprises the following steps: Step S1, causing the small-mouth end of the special alloy steel to pass through the reverse sleeve (608) and move toward one side of the limiting boss (505), so that the limiting boss (505) is sleeved inside the small-mouth end of the special alloy steel, controlling the driving hydraulic cylinder (3) to open, and driving the output end of the hydraulic cylinder (3) to drive the guide disc (504) to move linearly through the arc groove guide rail (4), so that the limiting boss (505) extends into the small-mouth end of the special alloy steel, further driving the special alloy steel to extend along the reverse sleeve (608); Step S2, controlling the first driving cylinder (601) and the second driving cylinder (701) to open: The first driving cylinder (601) drives the first guiding block (602) to extend. The first guiding block (602) supports the steering swing rod (603) through the first connecting rod (606). The steering swing rod (603) squeezes the telescopic slide rod (604) through the traction long hole (60301) and the driven long hole (60401) and the traction long bolt (60402). The telescopic slide rod (604) drives the limit flange cover plate (605) to move towards the large end of the special alloy steel until they contact. The limit flange cover plate (605) pulls the reverse sleeve (608) through the traction rope (609), causing the reverse sleeve (608) to move along the C-shaped frame (202) and squeeze the strong spring (60801). The reverse sleeve (608) is sleeved on the large end of the special alloy steel through the funnel through hole (60804) until it is fixed; The second driving cylinder (701) squeezes the second guiding block (702) to move radially through the second connecting rod (704). The second guiding block (702) squeezes the pressure increasing part (703) through the third connecting rod (705). The pressure increasing part (703) extending into the limit convex platform (505) squeezes the limit abutting block (707) through the wedge head plate (70302), causing the limit abutting block (707) to deflect outward to the expansion position with respect to the telescopic notch (506) and abut against the inner wall of the small end of the special steel alloy; Step S3, on the central platform (101), control the moving frame (801) to horizontally move to the position where the special alloy steel needs to be polished, and control the third driving cylinder (802) to start. Support the arc-shaped grinding plate (804) embedded with abrasive paper through the lifting platform (803) and lift it to the position where it fits the special alloy steel; Step S4, control the driving motor (502) to start, and use the second load-bearing frame (5) and the first load-bearing frame (2) to support the special alloy steel for rotational movement to achieve polishing by actively contacting the abrasive paper in the arc-shaped grinding plate (804).

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