Pneumatic shot blasting machine capable of being quickly assembled and disassembled for experiment

Abstract

The invention provides an experimental pneumatic shot blasting machine capable of being quickly assembled and disassembled. The experimental pneumatic shot blasting machine comprises a machine box, a workpiece table assembly installed on the lower portion of the machine box and a shot blasting assembly installed above the workpiece table assembly and connected with the machine box. The shot blasting assembly comprises a spray gun and a spray gun moving mechanism. The spray gun is fixedly connected with the lower end of the rack. Free adjustment of the spray gun in a three-dimensional space is achieved through the spray gun moving mechanism, free adjustment is conducted according to shot blasting machining requirements of different workpieces, the whole machining structure is integrated in the box body, and when experimental workpieces are machined, transfer and installation can be convenient and fast, the use experience is better, and the machining efficiency is improved. The first ball screw and the second ball screw are fixedly connected with the top of the machine box and the first sliding block through the first supporting base and the second supporting base respectively through bolts, disassembly and assembly are overall disassembly and assembly, more convenience and rapidness are achieved, assembly and disassembly are easy, and compared with traditional shot blasting equipment, more disassembly and assembly time is saved.

Description

Technical Field

[0001] The invention relates to a pneumatic shot blasting machine for experiments which can be assembled and disassembled quickly, and belongs to the technical field of shot blasting machines. Background Art

[0002] The working principle of pneumatic shot peening machine is to use high-speed airflow to drive the projectile, so that the projectile hits the surface of the workpiece at high speed, so as to enhance the surface hardness, introduce residual stress field and extend the service life of the workpiece.

[0003] At present, most pneumatic shot peening machines have complex structures, bulky equipment and poor flexibility. The disassembly, adjustment and maintenance processes are also cumbersome, which greatly affects their application efficiency and convenience in laboratory environments. The fixing method of the spray gun and the workbench is usually unable to quickly adapt to workpieces of different specifications, resulting in a long downtime when replacing workpieces or adjusting equipment configurations. In addition, due to the fixed structure, it is impossible to flexibly adjust and efficiently transfer in experiments or small batch production, which poses a considerable challenge to cost control and process adaptability.

[0004] Therefore, there is an urgent need for a shot blasting machine that is easy to use, quick to use and easy to move to meet the needs of convenient use in an experimental environment. Summary of the invention

[0005] Purpose of the invention: In view of the shortcomings of the prior art, the present invention provides a pneumatic shot peening machine for experiments that can be quickly assembled and disassembled. By setting a spray gun moving mechanism, free adjustment in a three-dimensional space can be achieved, and free adjustment can be performed according to the shot peening processing requirements of different workpieces. The overall structure is easy to assemble and disassemble and convenient to transfer.

[0006] Technical solution: A pneumatic shot peening machine for experiments that can be quickly assembled and disassembled, comprising a chassis, a workpiece table assembly installed at the bottom of the chassis, and a shot peening assembly installed above the workpiece table assembly and connected to the chassis; The workpiece table assembly includes a fixture for clamping a workpiece, the shot peening assembly includes a spray gun and a spray gun moving mechanism, the spray gun is connected to the shot peening box through a shot peening pipe; the spray gun moving mechanism includes at least two first support seats fixedly connected to the upper top of the chassis, the first support seats are connected by a rotatable first ball screw, any end of which is connected to a first driving motor through a first coupling, the first ball screw is threadedly connected to a first slider, and the first slider abuts against the upper top of the chassis; The two ends below the first slider are fixedly connected to second support seats, the second support seats are connected via a rotatable second ball screw, and any end is connected to a second drive motor via a second coupling; The second ball screw is threadedly connected to a second slider, the top of the second slider is abutted against the bottom of the first slider, a sleeve shell is provided on either side of the second slider, a rack that can slide up and down and an adjustment gear that meshes with the rack are provided in the sleeve shell, the adjustment gear is rotatably connected to the sleeve shell, a lifting control rod that passes through the sleeve shell is provided on one side of the gear, and a limit ratchet and a limit slider that are used in combination are provided on the other side, the limit ratchet is fixedly connected to the adjustment gear, and the limit slider can be slidably set on the sleeve shell, and after the adjustment is completed, it slides and cooperates with the limit ratchet to limit the position; The spray gun is fixedly connected to the lower end of the rack.

[0007] The present invention uses a combination of a first ball screw, a first driving motor and a first sliding block, and controls the first sliding block to move horizontally and laterally along the installation direction of the first ball screw through the first driving motor, and the second ball screw is perpendicular to the installation direction of the first ball screw. The combination of the second driving motor, the second ball screw and the second sliding block realizes the horizontal and transverse movement of the second sliding block. The combination of the two can realize full horizontal and all-round movement; the rack is arranged in the sleeve shell and slides up and down in the sleeve shell, driving the shot peening assembly to move in the longitudinal direction to adjust the height, thereby realizing free adjustment in the three-dimensional space, and freely adjusting according to the shot peening processing requirements of different workpieces. The overall processing structure is integrated in the box body, and can be conveniently transferred and quickly installed when processing experimental workpieces, so as to provide a better user experience. The first ball screw and the second ball screw are respectively fixedly connected to the top of the chassis and the first sliding block through the first supporting seat and the second supporting seat by bolts, and the disassembly and installation are integrated disassembly and assembly, which is more convenient and quick, and the assembly and disassembly are easy, which saves more disassembly and assembly time compared with traditional shot peening equipment.

[0008] The shot peening assembly includes a clamping jaw assembly for clamping the spray gun, the clamping jaw assembly includes a fixed clamp fixedly connected to the lower end of the rack through a rack connector and a movable clamp hinged to the middle of the fixed clamp, the fixed clamp and the movable clamp are both arranged as bending structures, one end of the fixed clamp and the movable clamp are provided with a first clamping block and a second clamping block, the other end of the fixed clamp and the bending part of the movable clamp are hingedly provided with a first connecting block and a second connecting block respectively, the first connecting block and the second connecting block are threadedly connected by a loosening screw, and the end of the movable clamp away from the second clamping block is hinged to the middle of the fixed clamp.

[0009] The spray gun is clamped by an adjustable clamp assembly, which is convenient for disassembly and replacement of the spray gun. The fixing clamp is fixedly connected to the rack through a rack connector. One side is fixed and the other side is adjusted, which makes the adjustment process smoother and does not affect the position that has been adjusted. After the spray gun is clamped, the shot peening direction can be kept consistent, which ensures to a greater extent that the effect of replacing the spray gun on the workpiece after the adjustment is completed can remain stable, and the processing effect is not affected by the replacement of the spray gun.

[0010] The second clamping block is hinged to the end of the movable clamp.

[0011] The second clamp acts as a slave adjustment and can adaptively adjust the direction during the spray gun clamping process to avoid hard friction with the spray gun and cause unnecessary wear on the spray gun surface. The spray gun can be clamped smoothly in place and stably clamped in the area between the fixed clamp and the movable clamp.

[0012] The workbench assembly comprises a guide table arranged on any side of the bottom of the chassis and inclined from the edge toward the bottom of the chassis, a mounting table (21) arranged above the guide table and having a horizontal upper side for mounting a fixture, and a shot recovery bin whose upper side is at the same level as the lower edge of the inclined surface of the guide table, the mounting table (21) having a through slot arranged on the upper side, the fixture being mounted on the upper side of the through slot, the shot recovery bin having a sieve hole arranged on the upper side, a spray gun interface arranged on the side of the shot recovery bin near the bottom, the spray gun being connected to the spray gun interface via a shot peening pipe; The guide platform and the projectile recovery bin are both slidably connected to the chassis, and the sides of the guide platform and the projectile recovery bin are both provided with built-in handles.

[0013] In order to reduce the impact wear on the chassis body caused by the high-speed projectiles being ejected, a guide table and a mounting table (21) are provided, and a fixture is provided on the upper side of the mounting table (21). When the spray gun ejects the projectiles, the projectiles are preferentially impacted on the surface of the workpiece and the upper side of the mounting table (21). The plurality of through grooves provided on the upper side of the mounting table (21) can allow a small portion of the projectiles that are splashed and have not impacted the surface of the workpiece to pass through. The projectiles are guided to the top of the projectile recovery bin by the guide table provided with an inclined surface. The sieve holes above the projectile recovery bin can filter the debris or larger fragments generated in the process of striking the workpiece, so as to prevent them from falling into the projectile recovery bin and affecting the reuse of the projectiles. The embedded handle can reduce the gap between the guide table and the projectile recovery bin and the chassis, thereby reducing vibration wear and preventing the projectiles from falling into the gap and being difficult to clean.

[0014] The lower half of the chassis near the handle is arranged as a chassis door that can be flipped open, and the chassis door is unlocked by a rotating buckle installed on the upper half.

[0015] In order to facilitate the inspection of the guide table and projectile recovery bin, replacement of projectiles, adjustment and replacement of fixtures, and installation of workpieces, a chassis door is opened on the side of the chassis and corresponding rotating buckles are set to provide a convenient operation window. The rotating buckle can be quickly limited and unlocked, providing a more convenient operating experience for maintenance and replacement.

[0016] The top of the chassis is arranged as a top cover which can be flipped open, the top cover is connected to any side of the chassis via a hinge, and a sealing strip is arranged at the connection between the bottom edge of the top cover and the chassis.

[0017] In order to make the shot peening assembly more convenient to disassemble and assemble, the top cover on which the first support block is installed is set as an openable structure, making it more convenient to install and disassemble the shot peening assembly. At the same time, a sealing strip is set at the connection with the chassis to reduce vibration wear, avoid shot peening splashing leakage, increase the service life of the equipment, and enhance ease of use.

[0018] The clamp comprises at least two locking bolts, a locking nut and a workpiece pressing block which are arranged through the through slots. The workpiece pressing block is provided with a through hole for the locking bolts to pass through. When the workpiece is pressed, the lower side of the workpiece pressing block is tightly fitted with the workpiece.

[0019] Since the structure of plate-type workpieces is diverse, not only limited to plate-like structures, but also includes three-dimensional shells or special-shaped three-dimensional structures. When processing non-cylindrical structures, different workpiece pressing blocks are selected according to the shape of the upper surface of the workpiece, including but not limited to the surface in contact with the upper surface of the workpiece being a horizontal surface, an inclined surface or a curved surface. The selection of the workpiece pressing block is based on the principle of being able to fit the upper surface of the workpiece to be processed as closely as possible to ensure the clamping stability of the workpiece pressing block on the workpiece. Setting at least two groups can avoid the deviation of the workpiece vibration caused by the impact of high-speed projectiles, further improve the processing stability, and ensure good processing results.

[0020] The clamp comprises a mounting plate fixedly mounted on the upper side of the mounting platform (21), a third drive motor fixedly arranged on the mounting plate, and a four-jaw chuck connected to the third drive motor via a third coupling, and the workpiece is mounted on the four-jaw chuck for rotational processing.

[0021] For cylindrical workpieces, the position is fixed by the limit of the four-jaw chuck, and the workpiece is rotated to make the surface of the workpiece evenly stressed. For columnar workpieces, the clamping method is used to limit the position. For cylindrical workpieces, they can be mounted on the outside of the retractable jaws of the four-jaw chuck and positioned by adjusting the outward expansion of the retractable jaws. The main work is the processing of columnar workpieces. When it is necessary to process cylindrical workpieces, a corresponding force-sharing structure must be set for the support points, such as a combination of an arc-shaped connecting plate and a fan-shaped rib plate, to make the internal support surface of the cylindrical workpiece wider.

[0022] The chassis is provided with observation windows on any two sides away from the chassis door, and a ventilation hole is provided on the other side, and leak-proof asbestos is provided in the ventilation hole.

[0023] By setting up an observation window, the processing status of the workpiece can be observed in time. The observation window is a transparent acrylic plate to prevent damage to the observation window caused by projectile splashing. The acrylic plate has good toughness. The air holes are set to avoid the pressure increase caused by continuous internal jetting. In order to avoid the leakage of projectiles from the air holes, the air holes are filled with leak-proof asbestos, which can ensure ventilation and pressure relief while avoiding projectile leakage. The air holes can also be sealed with a mesh structure with an aperture smaller than the projectile diameter.

[0024] A spray gun mounting bracket is arranged on either side of the chassis.

[0025] In order to facilitate the replacement of spray guns, a spray gun mounting rack is set on the outside of the chassis to install different types of spray guns for easy replacement. By observing the model of the spray gun on the outside, the model of the spray gun used inside can also be known.

[0026] Beneficial effects: The present invention realizes free adjustment in three-dimensional space and can be freely adjusted according to the shot peening processing requirements of different workpieces. The overall processing structure is integrated in the box. When processing experimental workpieces, it can be conveniently transferred and quickly installed, and the user experience is better. The first ball screw and the second ball screw are respectively fixedly connected to the top of the chassis and the first slider through the first support seat and the second support seat by bolts. The disassembly and installation are integrated disassembly and assembly, which is more convenient and quick. Assembly and disassembly are easy, and more disassembly and assembly time is saved compared to traditional shot peening equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 It is the overall structure diagram of the present invention.

[0029] Figure 2 The internal structure diagram of the side box is omitted for the present invention.

[0030] Figure 3 It is the installation structure diagram of the shot peening assembly of the present invention.

[0031] Figure 4 It is a structural diagram of the shot peening assembly of the present invention.

[0032] Figure 5 It is a structural diagram of the spray gun clamping mechanism of the present invention.

[0033] Figure 6 This is a structural diagram of the connection between the fixed pliers and the rack of the present invention.

[0034] Figure 7 This is a structural diagram of the workpiece table assembly of the present invention, wherein the fixture is suitable for cylindrical workpieces.

[0035] Figure 8 This is a diagram of the installation position of the built-in handles of the guide platform and the projectile recovery bin of the present invention, wherein the clamp is a clamp suitable for plate-type workpieces.

[0036] Fig. 9The present invention discloses an installation structure of a plate-type workpiece fixture, wherein the workpiece pressing block is omitted. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] A pneumatic shot blasting machine for experiments that can be quickly assembled and disassembled comprises a chassis 1, a workpiece table assembly 2 installed at the bottom of the chassis 1, and a shot blasting assembly 3 installed above the workpiece table assembly 2 and connected to the chassis 1; The workpiece table assembly 2 includes a fixture for clamping a workpiece, and the shot peening assembly 3 includes a spray gun 31 and a spray gun moving mechanism 32. The spray gun 31 is connected to the shot peening box through a shot peening pipe 33; the spray gun moving mechanism 32 includes at least two first support seats 321 fixedly connected to the top of the chassis 1, and the first support seats 321 are connected by a rotatable first ball screw 322, and any end is connected to a first driving motor 324 through a first coupling 323, and a first slider 325 is threadedly connected to the first ball screw 322, and the first slider 325 abuts against the top of the chassis 1; The two ends of the lower side of the first slider 325 are fixedly connected with second support seats 326, the second support seats 326 are connected by a rotatable second ball screw 327, and any end is connected to a second driving motor 329 via a second coupling 328; The second ball screw 327 is threadedly connected with the second slider 330, the top of the second slider 330 is abutted against the bottom of the first slider 325, and a casing 331 is provided on either side of the second slider 330. A rack 332 that can slide up and down and an adjustment gear 333 that meshes with the rack 332 are provided in the casing 331. The adjustment gear 333 is rotatably connected to the casing 331. A lifting control rod 334 that penetrates the casing 331 is provided on one side of the gear, and a limit ratchet 335 and a limit slider 336 that are used in combination are provided on the other side. The limit ratchet 335 is fixedly connected to the adjustment gear 333, and the limit slider 336 is slidably provided on the casing 331. After the adjustment is completed, it slides and cooperates with the limit ratchet 335 to limit the position; The spray gun 31 is fixedly connected to the lower end of the rack 332 .

[0041] The present invention uses a combination of a first ball screw 322, a first drive motor 324 and a first slider 325. The first drive motor 324 controls the first slider 325 to move horizontally along the installation direction of the first ball screw 322. The second ball screw 327 is perpendicular to the installation direction of the first ball screw 322. The combination of the second drive motor 329, the second ball screw 327 and the second slider 330 realizes the horizontal and lateral movement of the second slider 330. The combination of the two can realize full horizontal and omnidirectional movement. The rack 332 is sleeved in the housing 331 and slides up and down in the housing 331, driving The shot peening assembly 3 moves in the longitudinal direction to adjust the height, realizing free adjustment in the three-dimensional space, and can be freely adjusted according to the shot peening processing requirements of different workpieces. The overall processing structure is integrated in the box, and can be conveniently transferred and quickly installed when processing experimental workpieces, providing a better user experience. The first ball screw 322 and the second ball screw 327 are respectively fixedly connected to the top of the chassis 1 and the first slider 325 through the first support seat 321 and the second support seat 326 by bolts. The disassembly and installation are integrated disassembly and assembly, which is more convenient and quick, and assembly and disassembly are easy, saving more disassembly and assembly time compared to traditional shot peening equipment.

[0042] The shot peening assembly 3 includes a clamping assembly for clamping the spray gun 31, and the clamping assembly includes a fixed clamp 338 fixedly connected to the lower end of the rack 332 through a rack connector 337 and a movable clamp 339 hinged to the middle of the fixed clamp 338. The fixed clamp 338 and the movable clamp 339 are both arranged as bending structures, and one end of the fixed clamp 338 and the movable clamp 339 is provided with a first clamping block 340 and a second clamping block 341, and the other end of the fixed clamp 338 and the bending part of the movable clamp 339 are respectively hingedly provided with a first connecting block 342 and a second connecting block 343, and the first connecting block 342 and the second connecting block 343 are threadedly connected by a loosening screw 344, and the end of the movable clamp 339 away from the second clamping block 341 is hinged to the middle of the fixed clamp 338.

[0043] The spray gun 31 is clamped by an adjustable clamp assembly to facilitate the disassembly and replacement of the spray gun 31. The fixing clamp 338 is fixedly connected to the rack 332 through the rack connector 337. The method of fixing one side and adjusting the other side makes the adjustment process smoother without affecting the position that has been adjusted. After the spray gun 31 is clamped, the shot peening direction can be kept consistent, which ensures to a greater extent that the effect of replacing the spray gun 31 on the workpiece processing after the adjustment is completed can be maintained stable, and the processing effect is not affected by the replacement of the spray gun 31.

[0044] The second clamping block 341 is hinged to the end of the movable clamp 339 .

[0045] The second clamp block 341 acts as a slave adjustment and can adaptively adjust the direction during the clamping process of the spray gun 31 to avoid hard friction with the spray gun 31 and cause unnecessary wear on the surface of the spray gun 31. The spray gun 31 can be smoothly clamped in place and stably clamped in the area between the fixed clamp 338 and the movable clamp 339.

[0046] The workbench assembly comprises a guide table 4 arranged on any side of the bottom of the chassis 1 and inclined from the edge toward the bottom of the chassis 1, a mounting table (21) arranged above the guide table 4 and having a horizontal upper side for mounting a fixture, and a shot recovery bin 5 whose upper side is at the same level as the lower edge of the inclined surface of the guide table 4, wherein a through groove is arranged on the upper side of the mounting table (21), the fixture is installed on the upper side of the through groove, a sieve hole is arranged on the upper side of the shot recovery bin 5, a spray gun interface is arranged on the side of the shot recovery bin 5 near the bottom, and the spray gun 31 is connected to the spray gun interface through a shot peening pipe 33; The guide platform 4 and the pellet recovery bin 5 are both slidably connected to the chassis 1 , and the sides of the guide platform 4 and the pellet recovery bin 5 are both provided with built-in handles 6 .

[0047] In order to reduce the impact wear on the chassis 1 body caused by the high-speed projectiles being ejected, a guide platform 4 and a mounting platform (21) are provided, and a fixture is provided on the upper side of the mounting platform (21). When the spray gun 31 ejects the projectiles, it preferentially impacts the surface of the workpiece and the upper side of the mounting platform (21). The multiple through grooves provided on the upper side of the mounting platform (21) can allow a small portion of the projectiles that are splashed and have not hit the surface of the workpiece to pass through. The projectiles are guided to the upper side of the projectile recovery bin 5 by the guide platform 4 provided with an inclined surface. The sieve holes above the projectile recovery bin 5 can filter the debris or larger fragments generated in the process of striking the workpiece, so as to prevent them from falling into the projectile recovery bin 5 and affecting the reuse of the projectiles. The embedded handle 6 can reduce the gap between the guide platform 4 and the projectile recovery bin 5 and the chassis 1, thereby reducing vibration wear and preventing the projectiles from falling into the gap and being difficult to clean.

[0048] The lower half of the chassis 1 near the handle 6 is provided with a chassis door 11 that can be flipped open, and the chassis door 11 is unlocked by a rotating buckle 12 installed on the upper half.

[0049] In order to facilitate the inspection of the guide table 4 and the projectile recovery bin 5, the replacement of projectiles, the adjustment and replacement of the fixture, and the installation of the workpiece, a chassis door 11 is opened on the side of the chassis 1, and a corresponding rotating buckle 12 is set to provide a convenient operation window. The rotating buckle 12 can be quickly limited and unlocked, providing a more convenient operating experience for maintenance and replacement.

[0050] The top of the chassis 1 is provided with a top cover 13 that can be flipped open. The top cover 13 is connected to any side of the chassis 1 through a hinge 14. A sealing strip is provided at the connection between the bottom edge of the top cover 13 and the chassis 1.

[0051] In order to make the shot peening assembly 3 more convenient to disassemble and assemble, the top cover 13 on which the first support block is installed is set as an openable structure, which makes the installation and disassembly of the shot peening assembly 3 more convenient. At the same time, a sealing strip is set at the connection with the chassis 1 to reduce vibration wear, avoid shot peening splashing leakage, increase the service life of the equipment, and enhance ease of use.

[0052] The clamp includes at least two locking bolts 211, a locking nut 212 and a workpiece pressing block arranged through the through slots. The workpiece pressing block is provided with a through hole for the locking bolts 211 to pass through. When the workpiece is pressed, the lower side of the workpiece pressing block is tightly fitted with the workpiece.

[0053] Since the structure of plate-type workpieces is diverse, not only limited to plate-like structures, but also includes three-dimensional shells or special-shaped three-dimensional structures. When processing non-cylindrical structures, different workpiece pressing blocks are selected according to the shape of the upper surface of the workpiece, including but not limited to the surface in contact with the upper surface of the workpiece being a horizontal surface, an inclined surface or a curved surface. The selection of the workpiece pressing block is based on the principle of being able to fit the upper surface of the workpiece to be processed as closely as possible to ensure the clamping stability of the workpiece pressing block on the workpiece. Setting at least two groups can avoid the deviation of the workpiece vibration caused by the impact of high-speed projectiles, further improve the processing stability, and ensure good processing results.

[0054] The fixture comprises a mounting plate 213 fixedly mounted on the upper side of the mounting table (21), a third drive motor 214 fixedly arranged on the mounting plate 213, and a four-jaw chuck 216 transmission-connected to the third drive motor 214 via a third coupling 215, and the workpiece is mounted on the four-jaw chuck 216 for rotational processing.

[0055] For cylindrical workpieces, the position is fixed by the limit of the four-jaw chuck 216, and the workpiece is rotated to make the surface of the workpiece evenly stressed. For columnar workpieces, the position is limited by clamping. For cylindrical workpieces, they can be mounted on the outside of the retractable jaws of the four-jaw chuck 216 and positioned by adjusting the outward expansion of the retractable jaws. The main work is the processing of columnar workpieces. When it is necessary to process cylindrical workpieces, a corresponding force-sharing structure needs to be set for the support points, such as a combination of an arc-shaped connecting plate and a fan-shaped rib plate, so that the internal support surface of the cylindrical workpiece is wider.

[0056] The chassis 1 is provided with observation windows 15 on any two sides away from the chassis door 11 , and a ventilation hole 16 is provided on the other side, and leak-proof asbestos is provided in the ventilation hole 16 .

[0057] By setting the observation window 15, the processing status of the workpiece can be observed in time. The observation window 15 is a transparent acrylic plate to prevent the splashing of the projectile from damaging the observation window 15. The acrylic plate has good toughness. The air hole 16 is set to avoid the pressure increase caused by continuous internal jetting. In order to avoid the leakage of the projectile from the air hole 16, the air hole 16 is filled with leak-proof asbestos, which can ensure ventilation and pressure relief while avoiding leakage of the projectile. The mesh structure can also be used for sealing, and the hole diameter can be smaller than the diameter of the projectile.

[0058] A spray gun mounting bracket 7 is provided on either side of the chassis 1 .

[0059] In order to facilitate the replacement of the spray gun 31, a spray gun mounting frame 7 is provided on the outside of the chassis 1 to mount different types of spray guns 31 for easy replacement. By observing the model of the spray gun 31 on the outside, the model of the spray gun 31 used inside can also be known.

[0060] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pneumatic shot blasting machine for experiments that can be quickly assembled and disassembled, characterized in that: It comprises a chassis (1), a workpiece table assembly (2) installed at the bottom of the chassis (1), and a shot peening assembly (3) installed above the workpiece table assembly (2) and connected to the chassis (1); The workpiece table assembly (2) comprises a fixture for clamping a workpiece, and the shot peening assembly (3) comprises a spray gun (31) and a spray gun moving mechanism (32), wherein the spray gun (31) is connected to the shot peening box via a shot peening pipe (33); the spray gun moving mechanism (32) comprises at least two first support seats (321) fixedly connected to the upper top of the chassis (1), wherein the first support seats (321) are connected to each other via a rotatable first ball screw (322), and any one end thereof is connected to a first driving motor (324) via a first coupling (323), and a first slider (325) is threadedly connected to the first ball screw (322), and the first slider (325) abuts against the upper top of the chassis (1); The first sliding block (325) is fixedly connected to second support seats (326) at both ends below the first sliding block (325); the second support seats (326) are connected via a rotatable second ball screw (327); and any end is connected to a second drive motor (329) via a second coupling (328); The second ball screw (327) is threadedly connected to a second slider (330), the top of the second slider (330) abuts against the bottom of the first slider (325), a casing (331) is provided on either side of the second slider (330), a rack (332) that can slide up and down and an adjustment gear (333) that meshes with the rack (332) are provided in the casing (331), the adjustment gear (333) is rotatably connected to the casing (331), a lifting control rod (334) that passes through the casing (331) is provided on one side of the gear, and a limit ratchet (335) and a limit slider (336) that are used in combination are provided on the other side, the limit ratchet (335) is fixedly connected to the adjustment gear (333), and the limit slider (336) is slidably provided on the casing (331), and after adjustment is completed, it slides to cooperate with the limit ratchet (335) to limit the position; The spray gun (31) is fixedly connected to the lower end of the rack (332).

2. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 1 is characterized in that: The shot peening assembly (3) comprises a clamping jaw assembly for clamping a spray gun (31), the clamping jaw assembly comprising a fixed clamp (338) fixedly connected to the lower end of the rack (332) via a rack connector (337) and a movable clamp (339) hinged to the middle of the fixed clamp (338), the fixed clamp (338) and the movable clamp (339) both being arranged as a bending structure, one end of the fixed clamp (338) and the movable clamp (339) being provided with a first clamping block (340) and a second clamping block (341), the other end of the fixed clamp (338) and the bending part of the movable clamp (339) being hingedly provided with a first connecting block (342) and a second connecting block (343), the first connecting block (342) and the second connecting block (343) being threadedly connected via a loosening screw (344), and the end of the movable clamp (339) away from the second clamping block (341) being hinged to the middle of the fixed clamp (338).

3. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 2 is characterized in that: The second clamping block (341) is hinged to the end of the movable clamp (339).

4. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 1 is characterized in that: The workbench assembly comprises a guide table (4) arranged on any side of the bottom of the chassis (1) and inclined from the edge toward the bottom of the chassis (1), a mounting table (21) arranged above the guide table (4) and having a horizontal upper side for mounting a fixture, and a shot recovery bin (5) whose upper side is at the same level as the lower edge of the inclined surface of the guide table (4), wherein a through groove is arranged on the upper side of the mounting table (21), the fixture is mounted on the upper side of the through groove, a sieve hole is arranged on the upper side of the shot recovery bin (5), a spray gun interface is arranged on the side of the shot recovery bin (5) near the bottom, and the spray gun (31) is connected to the spray gun interface through a shot peening pipe (33); The guide platform (4) and the pellet recovery bin (5) are both slidably connected to the chassis (1), and the sides of the guide platform (4) and the pellet recovery bin (5) are both provided with built-in handles (6).

5. The rapidly assembleable and disassembleable experimental pneumatic shot blasting machine according to claim 4, characterized in that: The lower half of the chassis (1) close to the handle (6) is provided with a chassis door (11) that can be flipped open, and the chassis door (11) is unlocked by a rotating buckle (12) installed on the upper half.

6. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 1 is characterized in that: The top of the chassis (1) is provided with a top cover (13) that can be flipped open, the top cover (13) is connected to any side of the chassis (1) via a hinge (14), and a sealing strip is provided at the connection between the bottom edge of the top cover (13) and the chassis (1).

7. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 1 is characterized in that: The clamp comprises at least two locking bolts (211) arranged through the through slots, a locking nut (212) and a workpiece pressing block. The workpiece pressing block is provided with a through hole for the locking bolts (211) to pass through. When the workpiece is pressed, the lower side of the workpiece pressing block is tightly fitted to the workpiece.

8. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 1 is characterized in that: The clamp comprises a mounting plate (213) fixedly mounted on the upper side of the mounting platform (21), a third drive motor (214) fixedly arranged on the mounting plate (213), and a four-jaw chuck (216) transmission-connected to the third drive motor (214) via a third coupling (215); a workpiece is mounted on the four-jaw chuck (216) for rotational processing.

9. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 5, characterized in that: The chassis (1) is provided with observation windows (15) on any two sides away from the chassis door (11), and a ventilation hole (16) is provided on the other side, and leak-proof asbestos is provided in the ventilation hole (16).

10. The rapidly assembled and disassembled experimental pneumatic shot blasting machine according to claim 1, characterized in that: A spray gun mounting frame (7) is provided on any one side of the chassis (1).

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