A device for turning pins and drawing holes in the cylinder of a small reactor

Abstract

The present invention relates to the technical field of turning and hole-pulling processing equipment, specifically to a pin-pulling and hole-pulling device for a small reactor cylinder, comprising a broaching workbench, a three-jaw chuck arranged at the top of the broaching workbench, and a semicircular support bracket fixed to one side of the top of the broaching workbench. Through the linkage configuration of the three-jaw chuck, the semicircular support bracket, the spiral telescopic assembly and the reciprocating hole-pulling assembly, during the processing process, the device can accurately control the clamped cylinder to synchronously perform a compound motion of axial extension and circumferential rotation, and stop after the cylinder completes the spiral displacement of a preset angle, and then drive the turning and hole-pulling mechanism to feed vertically, and perform hole-pulling operations on the surface of the cylinder switched to the processing station. This integrated design breaks through the limitations of the traditional step-by-step processing mode, so that the entire device can perform uniform spiral hole-pulling operations, and significantly shortens the processing cycle by eliminating manual intervention nodes and turnover losses between processes, thereby improving overall processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of turning and hole drawing processing equipment, in particular to a pin turning and hole drawing device for a small-sized reactor cylinder. Background Art

[0002] In industrial fields such as chemical industry, pharmaceutical industry and material synthesis, reactors are widely used as core equipment in multiphase reaction scenarios such as gas-liquid, liquid-liquid or liquid-solid. When multiphase reactions such as gas-liquid, liquid-liquid or liquid-solid are carried out in the reactor, the uniform distribution and sufficient mixing of the reaction materials are crucial to the progress of the reaction and the quality of the products. The spirally opened holes can be used as fluid distribution channels, and gas or liquid materials are introduced through these holes. Since the holes are spirally distributed, the materials will diffuse along the spiral path after entering the reactor, and can be more evenly distributed in the reactor, promoting sufficient mixing between different materials, improving the uniformity and conversion rate of the reaction, and avoiding excessive or insufficient local reactions.

[0003] In the existing process for machining spiral holes on the outer surface of reactors, traditional turning and boring devices primarily rely on manual measurement and positioning to achieve indexing of spiral holes. The specific operation process is as follows: first, the first hole is machined, then the circumferential angle of the reactor is manually adjusted to the preset indexing value, and then the boring equipment is moved to the new processing position for secondary hole machining. This process has significant technical bottlenecks: on the one hand, the adjustment of the reactor angle and the displacement of the boring equipment are performed in steps, lacking a linkage control mechanism, resulting in deviations in the hole indexing and positioning, affecting the uniformity of fluid distribution; on the other hand, the boring process lacks a local support and padding mechanism for the reactor cylinder. The vertical feed pressure of the turning and boring assembly acts directly on the thin-walled area of ​​the cylinder, which can easily cause local plastic deformation, resulting in cylinder roundness deviations or microcracks, seriously affecting the pressure-bearing performance and service life of the reactor. Summary of the Invention

[0004] The purpose of the present invention is to provide a pin turning and hole pulling device for a small reactor cylinder, so as to solve the problem that when the existing turning and hole pulling device is used, the adjustment of the angle of the reactor and the displacement of the hole pulling equipment are carried out in steps, and there is a lack of a linkage control mechanism, which leads to hole position indexing and positioning deviation, affecting the uniformity of fluid distribution; on the other hand, there is a lack of a local support and padding mechanism for the reactor cylinder during the hole pulling process, and the vertical feed pressure of the turning and hole pulling component directly acts on the thin-walled area of ​​the cylinder, which can easily lead to local plastic deformation and cause the cylinder roundness to be out of tolerance or microcrack defects.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pin turning and hole drawing device for a small reactor cylinder, comprising a broaching workbench, a three-jaw chuck arranged at the top of the broaching workbench, and a semicircular supporting bracket fixed to one side of the top of the broaching workbench, a spiral telescopic assembly is provided on one side of the three-jaw chuck, a stepper motor is fixedly installed on one side of the bottom of the broaching workbench through a bracket, a missing gear plate is fixed on the output end of the stepper motor, a reciprocating hole drawing assembly is provided on one side of the missing gear plate, an outer ring cover is fixedly installed on the outside of the broaching workbench near the top of the missing gear plate, a limiting column is provided inside the outer ring cover, a limiting cavity is provided between the inner wall of the outer ring cover and the outer wall of the limiting column, a grinding assembly and a dust removal assembly are provided inside the limiting column; the spiral telescopic assembly includes a screw and a guide frame, the screw is rotatably mounted on the inside of the bottom end of the broaching workbench, the guide frame is fixedly mounted on the outside of the top end of the broaching workbench, and the guide frame is inclined.

[0006] Furthermore, a limit block is provided on the outside of one side of the screw rod through a threaded connection, and the bottom ends of both sides of the limit block are slidably engaged and installed on the outside of one side of the top of the broaching workbench. A mounting bracket is fixedly installed on the side of the limit block close to the three-jaw chuck, and a rotating rod is rotatably installed between the inside of one side of the mounting bracket and the inside of one side of the limit block. One end of the rotating rod is fixed to the middle position of one side of the three-jaw chuck, and a driving gear is fixed on the outside of the other end of the rotating rod.

[0007] Furthermore, a limit gear is fixedly installed on the outside of one end of the screw rod close to the missing gear plate, and a limit slide is longitudinally penetrated inside the side of the limit block close to the driving gear. A limit rack is longitudinally slidably engaged with one side of the limit slide, and one side of the limit rack is meshed with one side of the driving gear. A guide block is rotatably installed on one side of the top end of the limit rack, and a guide groove is penetrated inside the guide frame, and the guide block is slidably engaged and installed inside one side of the guide groove.

[0008] Furthermore, the reciprocating hole pulling assembly includes a one-way gear and a disc. The one-way gear is rotatably mounted on the outside of the broaching workbench close to the missing gear disc. The disc is coaxially fixed to the outside of one side of the one-way gear. A positioning column is fixedly mounted on the outside of one side edge of the disc. A limiting frame is installed horizontally and slidably through the outside of the positioning column. A pull rod is provided on the side of the broaching workbench close to the top of the limiting frame through a bracket that slides longitudinally through the bracket.

[0009] Furthermore, the bottom end of the pull rod is fixed to the middle position of the top of the limit frame, an auxiliary rod is longitudinally fixedly installed on the outside of the outer ring cover close to the pull rod, one side of the pull rod is slidably installed on the outside of the auxiliary rod, and a turning and pulling mechanism is fixedly installed on the side of the pull rod close to the middle position of the top of the outer ring cover.

[0010] Furthermore, the grinding assembly includes several limit grooves and piston blocks, several of the limit grooves are embedded around the outside of the limit column, and the inside of several of the limit grooves are slidably engaged and sealed with piston blocks. Several grinding blocks are arranged on the outside of the piston block away from the center position of the limit column, and spring compression rods are connected and fixed between the several grinding blocks and the piston block. A trigger assembly is arranged inside the middle position of the side of the limit column close to the three-jaw chuck.

[0011] Furthermore, the trigger assembly includes a storage chamber and a piston rod. The storage chamber is embedded inside one side of the limit column. The piston rod is slidingly engaged and sealed inside one side of the storage chamber. A resistance block is rotatably engaged and installed on the outside of the side of the piston rod close to the three-jaw chuck.

[0012] Furthermore, a plurality of guide tubes are arranged around the inner side of the storage chamber away from the interference block, and the output ends of the plurality of guide tubes are fixedly mounted on the inner wall of the bottom end of each limiting groove on the corresponding side. A return spring is provided through the outside of the piston rod, and the two ends of the return spring are respectively fixedly mounted on the piston end side of the piston rod and the inner wall side of the storage chamber.

[0013] Furthermore, the dust removal assembly includes a hollow shaft and several dust suction ports. The hollow shaft is fixed in the middle position inside the limiting column, and several dust suction ports are evenly spaced and arranged around the outside of the limiting column. One end of several dust suction ports is arranged inside one side of the hollow shaft, and one end of the hollow shaft is rotatably installed on the outside of the top side of the broaching workbench. The driving motor is fixed to the outside of the top side of the broaching workbench through a bracket.

[0014] Furthermore, a gear set is provided for transmission connection between the output end of the driving motor and the rotating through end of the hollow shaft, a collecting net box is fixed to the outside of one side of the top end of the broaching workbench, a suction machine is provided at the top end of the collecting net box, and a rotating sealing joint is connected to the input end of the suction machine, and a rotating seal at one end of the rotating sealing joint is installed on the outside of one side of the hollow shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the linkage configuration of the three-jaw chuck, semicircular support bracket, spiral telescopic assembly and reciprocating hole-pulling assembly, during the processing process, this device can accurately control the clamped cylinder to synchronously perform a compound movement of axial extension and circumferential rotation, and stop after the cylinder completes the spiral displacement of the preset angle, and then drive the turning and hole-pulling mechanism to feed vertically, and perform the hole-pulling operation on the surface of the cylinder switched to the processing station. This integrated design breaks through the limitations of the traditional step-by-step processing mode, allowing the entire device to perform uniform spiral hole-pulling operations, eliminating the manual intervention nodes and the cycle between processes. The rotation loss is reduced, the processing cycle is significantly shortened, and the overall processing efficiency is improved. At the same time, the limiting cavity structure constructed by the limiting column and the outer ring cover forms a dynamic rigid support system for the barrel hole drawing area. When the barrel is spirally drawing a hole, the part to be processed is embedded in the limiting cavity, and the limiting column that fits the curved surface of the barrel provides uniform resistance and support. This design effectively resolves the impact effect of concentrated load on the thin-walled area of ​​the barrel when the turning and drawing mechanism is vertically fed in traditional processing, and avoids the local stress deformation of the barrel caused by the vertical feed of the turning and drawing mechanism, which causes the barrel roundness deviation or microcrack defects.

[0017] 2. Through the linkage configuration of the trigger component, the grinding component and the dust removal component, during the processing, when the spiral hole pulling of the cylinder is completed, the closed end of one side of the cylinder resists the operation of the trigger component, so that the grinding component outside the limit column automatically expands and fits on the inner wall of the cylinder, and then the limit column drives the rotation of the grinding component, so that the inner wall of the cylinder can be polished and polished in time after the hole is opened, and it can penetrate into every corner of the inner wall of the cylinder, and the burrs at the bottom of the drill hole and the burrs inside the cylinder wall are completely polished and removed, further improving the surface quality of the cylinder, and significantly improving the smoothness of the inner wall of the cylinder, reducing the product failure rate caused by defects such as burrs, and at the same time, when the grinding component is running, the dust removal component can be operated to suck and recover the metal chips grinded inside, and a certain amount of heat generated by grinding inside the limit cavity can also be sucked and discharged, so as to avoid the temperature inside the limit cavity being too high, causing thermal deformation of metal parts, affecting the processing accuracy, and ensuring the overall processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting bracket and the rotating rod of the present invention;

[0020] Figure 3 for Figure 2 The enlarged structural diagram at B in the middle;

[0021] Figure 4 This is a schematic diagram showing the rotation of the gear plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating rod and the driving gear of the present invention;

[0023] Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of the outer ring cover and the limiting column of the present invention;

[0024] Figure 7 for Figure 6 The enlarged structural diagram of the source C in the middle;

[0025] Figure 8 It is a partial cross-sectional three-dimensional structural diagram of the limiting column and the storage cavity of the present invention;

[0026] Figure 9 It is a partial cross-sectional three-dimensional structural diagram of the hollow shaft and the dust suction port of the present invention;

[0027] Figure 10 for Figure 1 A in the middle is an enlarged structural diagram;

[0028] Figure 11 It is a schematic diagram of the three-dimensional structure of the spring compression rod and the grinding block of the present invention;

[0029] Figure 12 This is a schematic diagram demonstrating that the piston block of the present invention is expanded by squeezing the piston rod by the resistance block.

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. broaching table; 2. three-jaw chuck; 3. support frame; 4. screw rod; 5. limit block; 6. mounting frame; 7. rotating rod; 8. stepping motor; 9. missing gear plate; 10. limit gear; 11. driving gear; 12. limit slide; 13. limit rack; 14. guide frame; 15. guide groove; 16. guide block; 17. one-way gear; 18. disc; 19. positioning column; 20. limit frame; 21. Pull rod; 22. Turning and hole-drawing mechanism; 23. Auxiliary rod; 24. Outer ring cover; 25. Limiting column; 26. Limiting cavity; 27. Limiting groove; 28. Piston block; 29. ​​Spring compression rod; 30. Grinding block; 31. Storage cavity; 32. Guide tube; 33. Piston rod; 34. Resistance block; 35. Return spring; 36. Hollow shaft; 37. Dust suction port; 38. Drive motor; 39. Gear set; 40. Collection net box; 41. Suction machine; 42. Rotating sealing joint. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1 - Figure 5 , a pin turning and hole drawing device for a small reactor cylinder, comprising a broaching workbench 1, a three-jaw chuck 2 arranged at the top of the broaching workbench 1 and a semicircular supporting bracket 3 fixed to one side of the top of the broaching workbench 1, a spiral telescopic assembly is provided on one side of the three-jaw chuck 2, a stepping motor 8 is fixedly installed on one side of the bottom end of the broaching workbench 1 through a bracket, a gear plate 9 is fixed on the output end of the stepping motor 8, and a reciprocating hole drawing assembly is provided on one side of the gear plate 9. An outer ring cover 24 is fixedly installed on the outside of the broaching workbench 1 near the top of the gear plate 9, a limiting column 25 is provided inside the outer ring cover 24, and a limiting cavity 26 is provided between the inner wall of the outer ring cover 24 and the outer wall of the limiting column 25; the spiral telescopic assembly comprises a screw rod 4 and a guide frame 14, the screw rod 4 is rotatably mounted on the inside of the bottom end of the broaching workbench 1, the guide frame 14 is fixedly mounted on the outside of the top side of the broaching workbench 1, and the guide frame 14 is inclined.

[0033] A limit block 5 is set on the outside of one side of the screw rod 4 through a threaded connection, and the bottom ends of both sides of the limit block 5 are slidably engaged and installed on the outside of one side of the top of the broaching workbench 1. A mounting bracket 6 is fixedly installed on the side of the limit block 5 close to the three-jaw chuck 2, and a rotating rod 7 is rotatably installed between the inside of one side of the mounting bracket 6 and the inside of one side of the limit block 5. One end of the rotating rod 7 is fixed to the middle position of one side of the three-jaw chuck 2, and a driving gear 11 is fixed on the outside of the other end of the rotating rod 7.

[0034] A limit gear 10 is fixedly installed on the outside of one end of the screw rod 4 close to the missing gear plate 9, and a limit slide 12 is longitudinally penetrated inside the side of the limit block 5 close to the driving gear 11. A limit rack 13 is longitudinally slidably engaged with one side of the limit slide 12. One side of the limit rack 13 is meshed with one side of the driving gear 11. A guide block 16 is rotatably installed on one side of the top of the limit rack 13. A guide groove 15 is penetrated inside the guide frame 14, and the guide block 16 is slidably engaged with one side of the guide groove 15.

[0035] The reciprocating hole pulling assembly includes a one-way gear 17 and a disc 18. The one-way gear 17 is rotatably mounted on the outside of the broaching workbench 1 close to the missing gear disc 9. The disc 18 is coaxially fixed to the outside of one side of the one-way gear 17. A positioning column 19 is fixedly mounted on the outside of one side edge of the disc 18. A limiting frame 20 is installed horizontally and slideably through the outside of the positioning column 19. A pull rod 21 is provided on the side of the broaching workbench 1 close to the top of the limiting frame 20 through a bracket that slides longitudinally.

[0036] Specifically, through the one-way rotation setting of the existing one-way gear 17, the stepper motor 8 subsequently rotates in the opposite direction, pulling the three-jaw chuck 2 and the processed cylinder out of the limiting cavity 26. The missing gear plate 9 will not drive the one-way gear 17 to rotate, ensuring that the turning and hole pulling mechanism 22 will not be triggered to reciprocate when the material is withdrawn, thereby ensuring the overall stable operation.

[0037] The bottom end of the pull rod 21 is fixed to the middle position of the top of the limit frame 20, and an auxiliary rod 23 is longitudinally fixedly installed on the outside of the outer ring cover 24 close to the pull rod 21. One side of the pull rod 21 is slidably installed on the outside of one side of the auxiliary rod 23, and a turning and pulling mechanism 22 is fixedly installed on the side of the pull rod 21 close to the middle position of the top of the outer ring cover 24.

[0038] In this embodiment, when the present hole-turning and hole-pulling device is in use, the two ends of the cylinder that need to be spirally bored are first placed on one side of the three-jaw chuck 2 and the top of the semicircular support bracket 3, and then the existing three-jaw chuck 2 is started to clamp and position the sealing end of the cylinder. After the positioning is completed, the stepper motor 8 is started, and the rotation of the output shaft of the stepper motor 8 drives the gear plate 9 on one side to rotate. After the gear plate 9 rotates a certain angle, the tooth end of one side of the gear plate 9 is engaged with the limit gear 10. As the gear plate 9 continues to rotate, the limit gear 10 is driven to rotate. The rotation of the limit gear 10 drives the screw rod 4 on one side to rotate. The rotation of the screw rod 4 causes the limit block 5 threadedly connected to the outside of the screw rod 4 to drive the mounting frame 6 on one side, the rotating rod 7, the three-jaw chuck 2 and the clamped cylinder to move a distance toward one side of the hole-turning and hole-pulling mechanism 22. At the same time, when the limit block 5 drives the cylinder to move a certain distance, it will pull the driving gear 11, the limiting slide 12 and the limiting rack 13 on one side to move a certain distance synchronously. At this time, through the setting of the inclined guide frame 14 and the guide groove 15, when the limiting rack 13 moves a certain distance, the guide block 16 at the top of the limiting rack 13 will be interfered by the inclined guide frame 14 and the guide groove 15, so that the limiting rack 13 will drop a certain distance. When the limiting rack 13 drops, it will drive the meshing driving gear 11 on one side to rotate synchronously by a certain angle. After the driving gear 11 rotates a certain angle, it will drive the rotating rod 7 on one side and the cylinder clamped by the three-jaw chuck 2 to rotate synchronously by a certain angle. The intermittent operation according to the above-mentioned working process is continuously carried out, so that the device can control the cylinder to synchronously perform the compound motion of axial extension and circumferential rotation when in use, and the whole device forms a spiral extension motion (such as Figure 5 The spiral line on the outside of the middle cylinder is shown), which facilitates the subsequent spiral hole pulling operation and is easy to use overall.

[0039] It should also be noted that when the missing gear plate 9 rotates a certain angle, the tooth end on one side of the missing gear plate 9 disengages from the limit gear 10, and the screw rod 4 stops rotating. At this time, the cylinder has completed the extended rotation operation, thereby performing a short distance of rotation switching adjustment on the subsequent pulling hole position. After the missing gear plate 9 continues to rotate a certain angle, the tooth end on one side of the missing gear plate 9 meshes with one side of the one-way gear 17, thereby driving the one-way gear 17 to rotate one circle. When the one-way gear 17 rotates one circle, it will drive the disc 18 on one side to rotate one circle synchronously. When the disc 18 rotates one circle, it will drive the external positioning column 19 to rotate one circle synchronously. At this time, through the through-sliding connection between the positioning column 19 and the limit frame 20 and the longitudinal sliding limit of the pull rod 21 by the auxiliary rod 23, the positioning column 19 is rotated one circle. It will drive the pull rod 21 to move up and down once, so that the pull rod 21 drives the turning and hole pulling mechanism 22 on one side to move down to pull holes on the outside of the switched cylinder. At the same time, it will automatically lift and reset after the hole pulling operation is completed to ensure the overall operation stability. Therefore, when the device is in use, it can accurately control the clamped cylinder to synchronously perform a compound movement of axial extension and circumferential rotation, and stop after the cylinder completes the spiral displacement of the preset angle, and then drive the turning and hole pulling mechanism 22 to feed vertically to perform hole pulling operations on the surface of the cylinder switched to the processing station. This integrated design breaks through the limitations of the traditional step-by-step processing mode, so that the entire device can perform uniform spiral hole pulling operations, and significantly shortens the processing cycle by eliminating manual intervention nodes and turnover losses between processes, thereby improving overall processing efficiency.

[0040] It should also be noted that the limiting cavity 26 structure constructed by the limiting column 25 and the outer ring cover 24 forms a dynamic rigid support system for the cylinder hole pulling area. When the cylinder is spirally pulled, the part to be processed is embedded in the limiting cavity 26, and the limiting column 25 that fits the curved surface of the cylinder provides uniform resistance support. This design effectively resolves the impact effect of concentrated load on the thin-walled area of ​​the cylinder when the turning hole pulling mechanism 22 is fed vertically in traditional processing, and avoids the local force deformation of the cylinder caused by the vertical feed of the turning hole pulling mechanism 22, which causes the cylinder to have excessive roundness or microcrack defects.

[0041] Example 2: Please refer to Figure 6 - Figure 12 This embodiment further illustrates the first embodiment, wherein a grinding component and a dust removal component are provided inside the limiting column 25 .

[0042] The grinding assembly includes several limit grooves 27 and piston blocks 28. Several limit grooves 27 are embedded around the outside of the limit column 25. The inside of several limit grooves 27 are all slidably engaged and sealed with piston blocks 28. Several grinding blocks 30 are set on the outside of the piston block 28 away from the center position of the limit column 25. Spring compression rods 29 are connected and fixed between the several grinding blocks 30 and the piston block 28. A trigger assembly is set inside the middle position of the side of the limit column 25 close to the three-jaw chuck 2.

[0043] The trigger assembly includes a storage chamber 31 and a piston rod 33. The storage chamber 31 is embedded inside one side of the limit column 25. The piston rod 33 is slidingly engaged and sealed inside one side of the storage chamber 31. The piston rod 33 is rotatably engaged and installed with a resistance block 34 on the outside of the side close to the three-jaw chuck 2.

[0044] A plurality of guide tubes 32 are arranged around the inner side of the storage chamber 31 away from the interference block 34. The output ends of the plurality of guide tubes 32 are fixedly mounted on the inner wall of the bottom end of each limiting groove 27 on the corresponding side. A reset spring 35 is sleeved through the outside of the piston rod 33. The two ends of the reset spring 35 are respectively fixedly mounted on the piston end side of the piston rod 33 and the inner wall side of the storage chamber 31.

[0045] The dust removal assembly includes a hollow shaft 36 and several dust suction ports 37. The hollow shaft 36 is fixed in the middle position inside the limiting column 25. Several dust suction ports 37 are evenly spaced and arranged around the outside of the limiting column 25. One end of the several dust suction ports 37 is arranged inside one side of the hollow shaft 36. One end of the hollow shaft 36 is rotatably installed on the outside of the top side of the broaching workbench 1. A drive motor 38 is fixed to the outside of the top side of the broaching workbench 1 through a bracket.

[0046] A gear set 39 is provided for transmission connection between the output end of the driving motor 38 and the rotating through end of the hollow shaft 36. A collecting net box 40 is fixed to the outside of one side of the top of the broaching workbench 1. A suction machine 41 is provided at the top of the collecting net box 40. The input end of the suction machine 41 is connected to a rotating sealing joint 42. One end of the rotating sealing joint 42 is rotatably installed on the outside of one side of the hollow shaft 36.

[0047] In this embodiment, when the cylinder completes the spiral hole pulling operation, the inner wall of the sealing end of one side of the cylinder squeezes the resistance block 34 on one side to compress and run a certain distance. When compressed, the resistance block 34 will drive the piston rod 33 on one side to be compressed for a certain distance synchronously. Through the compression of the piston rod 33, the hydraulic oil previously injected into the storage chamber 31, the guide tube 32 and the limiting groove 27 is squeezed, so that the hydraulic oil is squeezed and flows, thereby squeezing the piston block 28 inside the limiting groove 27 and the multiple spring compression rods 29 and the grinding block 30 outside the piston block 28 to extend synchronously, so that the multiple grinding blocks 30 are stably in contact with the inner wall of the cylinder under the elastic setting of the spring compression rod 29, and then through By starting the driving motor 38 on one side, the output shaft of the driving motor 38 rotates and the transmission connection of the gear set 39, thereby driving the hollow shaft 36 and the limit column 25 to rotate synchronously. When the limit column 25 rotates, it drives the multiple grinding blocks 30 on the side to start rotating and grinding the inside of the cylinder. In this way, after the hole is opened, the inner wall of the cylinder can be polished in time without the need for subsequent secondary grinding. At the same time, it can penetrate into every corner of the inner wall of the cylinder, and thoroughly grind away the burrs at the bottom of the drilled hole and the burrs inside the cylinder wall, further improving the surface quality of the cylinder, significantly improving the smoothness of the inner wall of the cylinder, and reducing the product failure rate due to defects such as burrs.

[0048] It should also be noted that when the grinding assembly is running, the suction machine 41 on one side can be started to operate, and the conductive setting between the rotating sealing joint 42, the hollow shaft 36 and the several dust suction ports 37 can be used to suck the metal chips ground inside to the inside of the collection net box 40 for easy cleaning, and the overall use effect is better. At the same time, when sucking, a certain amount of heat generated by grinding inside the limit cavity 26 can also be sucked out to avoid the internal temperature of the limit cavity 26 being too high, causing thermal deformation of metal parts and affecting the processing accuracy, thereby ensuring the overall processing effect.

[0049] It should also be noted that when the hole pulling and grinding processing of the cylinder is completed, the stepping motor 8 on one side can be started to rotate in the opposite direction, thereby pulling the three-jaw chuck 2 and the processed cylinder out of the limiting cavity 26. When the processed cylinder exits the limiting cavity 26, the resistance block 34 will lose its resistance force, and at the same time, cooperate with the rebound of the reset spring 35 to drive the piston rod 33 to move back, thereby pumping back the hydraulic oil, so that the piston block 28 inside the limiting groove 27 is recovered and reset, thereby ensuring the flatness of the surface of the limiting column 25, and avoiding the protruding grinding block 30 from conflicting with the limiting cylinder when the new cylinder is pushed into the limiting cavity 26, causing movement conflict and damage to the device, thereby ensuring the overall operation stability.

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

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

Claims

1. A pin turning and hole drawing device for a small reactor cylinder, comprising a broaching workbench (1), a three-jaw chuck (2) arranged at the top of the broaching workbench (1), and a semicircular support bracket (3) fixed to one side of the top of the broaching workbench (1), characterized in that: A spiral telescopic assembly is provided on one side of the three-jaw chuck (2); a stepper motor (8) is fixedly installed on one side of the bottom end of the broaching workbench (1) through a bracket; a missing gear plate (9) is fixed on the output end of the stepper motor (8); a reciprocating hole pulling assembly is provided on one side of the missing gear plate (9); an outer ring cover (24) is fixedly installed on the outside of the broaching workbench (1) near the top of the missing gear plate (9); a limiting column (25) is provided inside the outer ring cover (24); a limiting cavity (26) is provided between the inner wall of the outer ring cover (24) and the outer wall of the limiting column (25); a grinding assembly and a dust removal assembly are provided inside the limiting column (25); The spiral telescopic assembly comprises a screw rod (4) and a guide frame (14), wherein the screw rod (4) is rotatably mounted inside a bottom side of the broaching workbench (1), and the guide frame (14) is fixedly mounted outside a top side of the broaching workbench (1), and the guide frame (14) is tilted; A limit block (5) is provided on the outside of one side of the screw rod (4) through a threaded connection, and the bottom ends of both sides of the limit block (5) are both slidably engaged and installed on the outside of one side of the top of the broaching workbench (1), and a mounting frame (6) is fixedly installed on the side of the limit block (5) close to the three-jaw chuck (2), and a rotating rod (7) is rotatably installed between the inside of one side of the mounting frame (6) and the inside of one side of the limit block (5), and one end of the rotating rod (7) is fixedly installed at the middle position of one side of the three-jaw chuck (2), and a driving gear (11) is fixed on the outside of the other end of the rotating rod (7); A limit gear (10) is fixedly installed on the outside of one end of the screw rod (4) close to the missing gear plate (9), and a limit slide (12) is longitudinally penetrated inside the side of the limit block (5) close to the driving gear (11), and a limit rack (13) is longitudinally slidably engaged with one side of the limit slide (12), and one side of the limit rack (13) is meshed and connected with one side of the driving gear (11). A guide block (16) is rotatably installed on one side of the top of the limit rack (13), and a guide groove (15) is penetrated inside the guide frame (14), and the guide block (16) is penetrated and slidably engaged and installed inside one side of the guide groove (15); The grinding assembly includes a plurality of limit grooves (27) and piston blocks (28), wherein the plurality of limit grooves (27) are embedded around the outside of the limit column (25), and the interior of the plurality of limit grooves (27) is slidably engaged and sealed with piston blocks (28), and a plurality of grinding blocks (30) are arranged on the outside of the piston block (28) away from the center position of the limit column (25), and a spring compression rod (29) is connected and fixed between the plurality of grinding blocks (30) and the piston block (28), and a trigger assembly is arranged inside the middle position of the side of the limit column (25) close to the three-jaw chuck (2); The trigger assembly comprises a storage chamber (31) and a piston rod (33); the storage chamber (31) is embedded and opened inside one side of the limiting column (25); and the piston rod (33) is slidably engaged and sealed inside one side of the storage chamber (31).

2. The pin-boring and hole-pulling device for a small-sized reactor cylinder according to claim 1, characterized in that: The reciprocating hole-drawing assembly comprises a one-way gear (17) and a disc (18), wherein the one-way gear (17) is rotatably mounted on the outside of a side of the broaching workbench (1) close to the missing gear disc (9), and the disc (18) is coaxially fixed on the outside of a side of the one-way gear (17). A positioning column (19) is fixedly mounted on the outside of one side edge of the disc (18), and a limiting frame (20) is slidably and laterally mounted on the outside of the positioning column (19). A pull rod (21) is longitudinally slidably and passed through the side of the broaching workbench (1) close to the top of the limiting frame (20) through a bracket.

3. The pin-boring and hole-pulling device for a small-sized reactor cylinder according to claim 2, characterized in that: The bottom end of the pull rod (21) is fixed to the middle position of the top end of the limiting frame (20); an auxiliary rod (23) is longitudinally fixedly installed on the outside of the outer ring cover (24) close to the pull rod (21); one side of the pull rod (21) is slidably installed on the outside of the auxiliary rod (23); and a turning and pulling mechanism (22) is fixedly installed on the side of the pull rod (21) close to the middle position of the top end of the outer ring cover (24).

4. The pin-boring and hole-pulling device for a small-sized reactor cylinder according to claim 1, characterized in that: A resistance block (34) is mounted on the outside of the piston rod (33) on one side close to the three-jaw chuck (2) in a rotatable manner.

5. The pin drilling and hole drawing device for a small reactor cylinder according to claim 4, characterized in that: A plurality of guide tubes (32) are provided in a surrounding manner on the side of the storage chamber (31) away from the resistance block (34), and the output ends of the plurality of guide tubes (32) are fixedly mounted on the inner wall of the bottom end of each limiting groove (27) on the corresponding side. A reset spring (35) is provided through the outside of the piston rod (33), and the two ends of the reset spring (35) are respectively fixedly mounted on the piston end side of the piston rod (33) and the inner wall side of the storage chamber (31).

6. The pin drilling and hole drawing device for a small reactor cylinder according to claim 1, characterized in that: The dust removal assembly includes a hollow shaft (36) and a plurality of dust suction ports (37), wherein the hollow shaft (36) is fixed in the middle position inside the limiting column (25), and the plurality of dust suction ports (37) are arranged around and penetrated at equal intervals on the outside of the limiting column (25), and one end of the plurality of dust suction ports (37) is arranged inside one side of the hollow shaft (36), and one end of the hollow shaft (36) is rotatably installed on the outside of the top side of the broaching workbench (1), and a driving motor (38) is fixed to the outside of the top side of the broaching workbench (1) through a bracket.

7. The pin-boring and hole-pulling device for a small-sized reactor cylinder according to claim 6, characterized in that: A gear set (39) is provided for transmission connection between the output end of the driving motor (38) and the rotating through end of the hollow shaft (36); a collecting net box (40) is fixed to the outside of one side of the top end of the broaching workbench (1); a suction machine (41) is provided at the top end of the collecting net box (40); a rotating sealing joint (42) is connected to the input end of the suction machine (41); and a rotating seal at one end of the rotating sealing joint (42) is installed on the outside of one side of the hollow shaft (36).

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