Tool for shot blasting of small shaft

Abstract

The utility model relates to the field of tools, and particularly discloses a small shaft shot blasting tool which comprises a hanging cage, a mounting cage and a placing cavity, the hanging cage is rotatably connected to a shot blasting machine, the mounting cage is connected to the hanging cage, the mounting cage forms the placing cavity for placing a small shaft, and a side opening, away from a rotating shaft of the hanging cage, of the placing cavity is formed. The small shaft piece can be placed in the placing cavity through the opening; and after the small shaft is placed, the mounting cage is connected to the hanging cage, the small shaft located in the placing cavity is driven to pass through the shot blasting opening along with rotation of the hanging cage, and shot blasting treatment on the small shaft is achieved. The tool is used for fixing the small shaft piece, and shot blasting treatment on the small shaft piece is achieved.

Description

Technical Field

[0001] This application relates to the field of tooling, and in particular to a tooling for shot peening small shaft parts. Background Technique

[0002] Shot peening is a surface strengthening process widely used in factories. During shot peening, shot peening materials are ejected from the shot peening nozzle for shot peening together with compressed air, bombarding the surface of the workpiece and implanting residual compressive stress to improve the fatigue strength of the workpiece, and enhance the mechanical strength, wear resistance, fatigue resistance, corrosion resistance and other properties of the part; the advantages of shot peening are simple equipment, low cost, not limited by the shape and position of the workpiece, and convenient operation.

[0003] When shot peening a workpiece, a shot peening machine is often used to perform automatic shot peening on the workpiece. At this time, the workpiece is usually not directly placed in the shot peening machine, but the workpiece is matched with the tooling and then placed in the shot peening machine together; the tooling can change the position and state of the workpiece in the shot peening machine, so that the surface of the workpiece can be fully contacted with the shot peening, further improving the strength, fatigue resistance and wear resistance of the workpiece.

[0004] Currently, conventional shot peening on the market mostly hangs the workpiece on the tooling and then puts it into the shot peening machine for shot peening. When shot peening small shaft parts, due to the too small size of the small shaft parts, they cannot be hung on the tooling, and shot peening of small shaft parts cannot be realized. Utility Model Content

[0005] In order to fix small shaft parts during shot peening, this application provides a tooling for shot peening small shaft parts.

[0006] The tooling for shot peening small shaft parts provided by this application adopts the following technical solutions:

[0007] A tooling for shot peening small shaft parts includes a hanging cage and an installation cage. The hanging cage is rotatably installed in the shot peening machine. The installation cage is connected to the hanging cage. A placement cavity for placing small shaft parts is formed in the installation cage, and the side of the placement cavity away from the rotation axis of the hanging cage is open.

[0008] By adopting the above technical solution, a placement cavity is formed on the installation cage, and the side of the placement cavity is open. The small shaft parts can be placed horizontally or approximately horizontally into the placement cavity through the opening. This tooling can limit the small shaft parts, enabling the small shaft parts to be fixed on the tooling, and the cooperation between the small shaft parts and the tooling is more stable, solving the problem that small shaft parts cannot be hung on general tooling. After the small shaft parts are placed, the installation cage is then connected to the hanging cage. As the hanging cage rotates, it drives the small shaft parts placed in the placement cavity to pass through the shot peening port, and thus the small shaft parts can be shot peened. Multiple small shaft parts can be placed in the placement cavity, and multiple small shaft parts can be shot peened simultaneously, improving the working efficiency of shot peening.

[0009] Optionally, a plurality of the installation cages are provided, and the plurality of installation cages are equidistantly distributed along the circumference with the hanging cage rotation axis as the center.

[0010] By adopting the above technical solution, the hanging cage is connected to multiple installation cages at the same time, and more small shaft parts can be shot peened, increasing the number of small shaft parts that can be processed by shot peening at one time and improving the shot peening efficiency. The multiple installation cages are equidistantly distributed along the circumference. When the hanging cage rotates, it can drive the small shaft parts in multiple placement cavities to pass through the shot peening port in turn, enabling the small shaft parts in each placement cavity to be more evenly impacted by shot peening, and the shot peening process is more stable. At the same time, the uniform distribution along the circumference makes the tooling structure more symmetrical and simple, more convenient for manufacturing, and reduces the manufacturing cost.

[0011] Optionally, the placement cavity is in a cuboid shape. When the installation cage is connected to the hanging cage, the long side of the placement cavity is in a vertical state, and the small shaft parts are arranged in a single row and stacked in the placement cavity in turn.

[0012] By adopting the above technical solution, the placement cavity is in a cuboid shape. When the installation cage is connected to the hanging cage, the long side of the placement cavity is in a vertical state, enabling the small shaft parts to be arranged in a single row and stacked in the placement cavity in turn. The single-row stacking placement makes the small shaft parts in a more stable state in the placement cavity, further improving the stability of the shot peening process.

[0013] Optionally, a limiting protrusion is provided at the bottom of the placement cavity, and the limiting protrusion is located at the opening of the placement cavity.

[0014] By adopting the above technical solution, the limiting protrusion lifts the end of the small shaft part away from the hanging cage rotation axis, making the small shaft part in an inclined state in the placement cavity, avoiding the small shaft part falling out of the placement cavity due to the action of centrifugal force, and improving the stability of the shot peening process. During shot peening, there is a probability that the reaction force between the small shaft part and the installation cage will cause the small shaft part to fall out of the placement cavity. The limiting protrusion can offset the reaction force to a certain extent and reduce the risk of the small shaft part falling.

[0015] Optionally, a partition board is provided on the installation cage, and the partition board divides the placement cavity into two parts.

[0016] By adopting the above technical solution, the partition board divides a single longer placement cavity into two shorter parts, realizing the partition limit for small shaft parts, reducing the number of small shaft parts that can be placed in each part, and the superposition placement of a smaller number of small shaft parts makes the overall structure more stable. The small shaft parts can be placed more stably in the placement cavity, further reducing the probability of the small shaft parts falling out of the placement cavity and maintaining the stability of the shot peening process.

[0017] Optionally, the installation cage includes an upper cover, a base, at least two limiting rods and at least one blocking rod. The two ends of the limiting rods are respectively fixedly connected to the upper cover and the base, and the two ends of the blocking rod are respectively fixedly connected to the upper cover and the base. The limiting rods are symmetrically distributed on both sides of the small shaft part for limiting the small shaft part. The blocking rod abuts against the end of the small shaft part close to the hanging cage rotating shaft, and the placement cavity is surrounded by the upper cover, the base, the limiting rods and the blocking rod.

[0018] By adopting the above technical solution, the limiting rods and the blocking rod jointly limit the small shaft part. The limiting rods prevent it from swinging left and right and falling, and the blocking rod prevents the acting force generated by shot peening on the shaft part from causing the small shaft part to slide out of the placement cavity, ensuring the stability of the small shaft part during the shot peening process; and the structure of the placement cavity enables the end face of the small shaft part to be shot peened to face the shot peening port, realizing the shot peening treatment of the end face of the small shaft part; at the same time, the placement cavity surrounded by the rod bodies has a smaller overall weight, which can reduce the manufacturing difficulty and simplify the complexity of the tooling.

[0019] Optionally, the installation cage includes an upper cover, a base, two limiting plates and a baffle. The two ends of the limiting plates are respectively fixedly connected to the upper cover and the base, and the two ends of the baffle are respectively fixedly connected to the upper cover and the base. The two limiting plates are distributed on both sides of the small shaft part for limiting the small shaft part. The baffle abuts against the end of the small shaft part close to the hanging cage rotating shaft, and the placement cavity is surrounded by the upper cover, the base, the two limiting plates and the baffle.

[0020] By adopting the above technical solution, the limiting plates and the baffle jointly limit the small shaft part. The limiting plates prevent it from swinging left and right and falling, and the baffle prevents the acting force generated by shot peening on the shaft part from causing the small shaft part to slide out of the placement cavity, ensuring the stability of the small shaft part during the shot peening process; and the structure of the placement cavity enables the end face of the small shaft part to be shot peened to face the shot peening port, realizing the shot peening processing of the end face of the small shaft part; at the same time, the placement cavity surrounded by the plate bodies can further improve the limiting effect on the small shaft part and make the state of the small shaft part in the placement cavity more stable.

[0021] Optionally, a plurality of fixing holes equal in number to the installation cages are formed in the top of the hanging cage. A plurality of fixing holes equal in number to the installation cages are formed in the top of the hanging cage. Fixing rods are correspondingly arranged at the top of the installation cages. The fixing rods are in clearance fit with the fixing holes. A positioning structure is arranged between the bottom of the hanging cage and the bottom of each installation cage. The positioning structure cooperates with the fixing rods and the fixing holes to connect each installation cage to the hanging cage and keep the opening of the placement cavity always facing away from the rotation axis of the hanging cage.

[0022] By adopting the above technical solution, when the installation cage is obliquely placed into the hanging cage, the fixing holes and the fixing rods are in clearance fit, so that the fixing rods can be obliquely inserted into the fixing holes, which is more convenient for connecting the installation cage to the hanging cage; the positioning structure is used to connect the base of the installation cage to the lower fixing plate of the hanging cage and keep the opening of the placement cavity always facing away from the rotation axis of the hanging cage, better performing shot peening on the end of the small shaft part, preventing the installation cage from rotating, and ensuring the stability of the shot peening process.

[0023] Optionally, the positioning structure includes at least two positioning protrusions and at least two positioning holes. The positioning protrusions are arranged at the bottom of the installation cage. The positioning holes are formed in the bottom of the hanging cage. The positioning holes correspond to the positioning protrusions one by one and are in plug-in fit.

[0024] By adopting the above technical solution, two positioning holes and positioning protrusions can prevent the installation cage from rotating. The cooperation of a plurality of positioning protrusions and positioning holes can further position the installation cage, prevent the installation cage from rotating, better perform shot peening on the end face of the small shaft part, and ensure the stability of the shot peening process.

[0025] Optionally, the positioning structure includes a positioning protrusion and a positioning hole. The positioning protrusion is arranged at the bottom of the installation cage. The positioning hole is formed in the bottom of the hanging cage. The cross section of the positioning protrusion is polygonal. The shape of the positioning hole is correspondingly set to be polygonal. The positioning protrusion is in plug-in fit with the positioning hole.

[0026] By adopting the above technical solution, the cross section of the positioning protrusion is polygonal, the shape of the positioning hole matches that of the positioning protrusion, and the side wall of the positioning hole circumferentially limits the positioning protrusion, preventing the installation cage from rotating, better performing shot peening on the end face of the small shaft part, and ensuring the stability of the shot peening process.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The installation cage is formed with a placement cavity, and the side of the placement cavity is open. The small shaft parts can be placed into the placement cavity in a horizontal or nearly horizontal state through the opening. This tooling can limit the small shaft parts, enabling them to be fixed on the tooling. The cooperation between the small shaft parts and the tooling is more stable, solving the problem that small shaft parts cannot be hung on general tooling. After placing the small shaft parts, the installation cage is then connected to the hanging cage. As the hanging cage rotates, it drives the small shaft parts placed in the placement cavity through the shot peening port, and thus the small shaft parts can be shot peened. Multiple small shaft parts can be placed in the placement cavity, and multiple small shaft parts can be shot peened simultaneously, improving the working efficiency of shot peening.

[0029] 2. The limiting rod and the blocking rod jointly limit the small shaft parts. The limiting rod prevents it from swinging left and right and falling, and the blocking rod prevents the acting force generated by shot peening on the shaft parts from causing the small shaft parts to slide out of the placement cavity, ensuring the stability of the small shaft parts during the shot peening process. Moreover, the structure of the placement cavity enables the end face of the small shaft part to be shot peened to face the shot peening port, realizing the shot peening treatment of the end face of the small shaft part. At the same time, the placement cavity surrounded by the rod bodies has a smaller overall weight, which can reduce the manufacturing difficulty and simplify the complexity of the tooling.

[0030] 3. When the installation cage is tilted and placed into the hanging cage, the fixing holes and the fixing rods are in clearance fit, enabling the fixing rods to be inserted into the fixing holes obliquely, which is more convenient for connecting the installation cage to the hanging cage. The positioning structure is used to connect the base of the installation cage to the lower fixing plate of the hanging cage and make the opening of the placement cavity always face away from the rotation axis of the hanging cage, better shot peening the end part of the small shaft part, avoiding the self-rotation of the installation cage, and ensuring the stability of the shot peening process. Brief Description of the Drawings

[0031] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present application;

[0032] Figure 2 is the structural schematic diagram of the installation cage in Embodiment 1 of the present application;

[0033] Figure 3 is the structural schematic diagram of the hanging cage in Embodiment 1 of the present application;

[0034] Figure 4 is the structural schematic diagram for showing the bottom in Embodiment 1 of the present application;

[0035] Figure 5 is the structural schematic diagram of the installation cage in Embodiment 2 of the present application;

[0036] Figure 6 is the bottom view of Embodiment 3 of the present application.

[0037] Reference numerals: 1, placement cavity; 2, limiting protrusion; 3, partition board; 4, shaft rod; 5, hanging cage; 51, upper fixing plate; 52, lower fixing plate; 53, pull rod; 6, installation cage; 61, upper cover; 62, base; 63, limiting rod; 64, blocking rod; 65, limiting plate; 66, baffle; 7, stepped structure; 8, positioning structure; 81, positioning hole; 82, positioning protrusion; 9, fixing hole; 10, fixing rod. Detailed implementation mode

[0038] The following will further elaborate on this application in conjunction with the attached Figure 1-6 drawings.

[0039] Embodiment 1:

[0040] The embodiment of this application discloses a tooling for shot peening small shaft parts.

[0041] Referring to Figure 1 , it includes a hanging cage 5 and an installation cage 6 for placing small shaft parts. The hanging cage 5 is rotatably installed in the shot peening machine, and the installation cage 6 is arranged on the hanging cage 5. During use, the hanging cage 5 rotates in the shot peening machine, driving the installation cage 6 with small shaft parts to rotate together, so that the end surface to be shot peened of the small shaft parts can repeatedly pass by and face the shot peening port, realizing the shot peening treatment of the small shaft parts to improve the strength, wear resistance, fatigue resistance, etc. of the small shaft parts.

[0042] Among them, a placement cavity 1 in the shape of a cuboid is formed in the installation cage 6. When the installation cage 6 is connected to the hanging cage 5, the long side of the placement cavity 1 is in a vertical state; the side of the placement cavity 1 far from the rotation axis of the hanging cage 5 is open, and multiple small shaft parts are placed in the placement cavity 1 through the opening. The small shaft parts are in a horizontal or approximately horizontal state in the placement cavity 1, so that the end surface to be shot peened of the small shaft parts can face the shot peening port. At the same time, the opening width of the placement cavity 1 is slightly larger than the diameter of the small shaft parts. The small shaft parts are stacked in a single row along the long side of the placement cavity 1 in sequence, and the two side walls at the opening of the placement cavity 1 limit the small shaft parts, improving the stability of the small shaft parts during the shot peening process.

[0043] In this embodiment, there are multiple installation cages 6, and the multiple installation cages 6 are circumferentially distributed and centered on the rotation axis of the hanging cage 5. During use, the hanging cage 5 rotates in the shot peening machine, thereby driving the end surfaces of the small shaft parts in each placement cavity 1 to pass by the shot peening port in sequence, and the end surfaces of multiple small shaft parts can be shot peened in sequence, increasing the number of small shaft parts that can be processed by shot peening at one time and improving the efficiency of shot peening processing.

[0044] Furthermore, the multiple installation cages 6 are equidistantly distributed along the circumferential direction. The equidistant distribution makes the tooling structure more symmetrical and simple, more convenient for manufacturing, reducing the manufacturing cost; during the shot peening process, the small shaft parts in each placement cavity 1 can be more evenly impacted by shot peening, and the shot peening process is more stable.

[0045] Specifically, referring to Figure 2 , the installation cage 6 includes an upper cover 61, a base 62, at least two limiting rods 63 and at least one blocking rod 64. The two ends of the limiting rods 63 and the blocking rod 64 are respectively fixedly connected to the upper cover 61 and the base 62 and are perpendicular to the upper cover 61 and the base 62. The limiting rods 63 are symmetrically distributed on both sides of the small shaft part, and the distance between the limiting rods 63 on both sides is slightly larger than the diameter of the small shaft part. The blocking rod 64 abuts against the end of the small shaft part. The limiting rods 63, the blocking rod 64, the upper cover 61 and the base 62 together enclose a placement cavity 1 with one side open. That is to say, the small shaft parts are arranged in a single row in the placement cavity 1 and are stacked and placed in the placement cavity 1 in sequence;

[0046] When shot peening the end face of the small shaft part away from the rotating shaft, the limiting rods 63 and the blocking rod 64 jointly limit the small shaft part. The limiting rods 63 prevent it from swinging left and right and falling, and the blocking rod 64 prevents the acting force generated by the shot peening on the shaft part from causing the small shaft part to slide out of the placement cavity 1, ensuring the stability of the small shaft part during the shot peening process.

[0047] In this embodiment, four limiting rods 63 are provided and one blocking rod 64 is provided. The four limiting rods 63 are symmetrically distributed on both sides of the small shaft part. The blocking rod 64 abuts against the center of one end of the small shaft part close to the rotating shaft of the hanging cage 5. The four limiting rods 63 and one blocking rod 64 together with the upper cover 61 and the base 62 enclose the placement cavity 1, further limiting the small shaft part and making the state of the small shaft part in the placement cavity 1 more stable, thereby further improving the stability of the shot peening process.

[0048] In other embodiments, the limiting rods 63 and the blocking rod 64 can be set to other numbers. For small shaft parts with a shorter length, setting two limiting rods 63 can achieve the positioning of the small shaft part. For shaft parts with a longer length, six or more limiting rods 63 need to be set to more accurately position the small shaft part; in actual working conditions, the blocking rod 64 can be set to different numbers according to needs.

[0049] Further, a limiting protrusion 2 is provided on the base 62. The limiting protrusion 2 is located at a position on the base 62 close to the opening and extends in the direction close to the upper cover 61. That is to say, the limiting protrusion 2 is located at the bottom of the placement cavity 1, and the end of the small shaft part is supported by the limiting protrusion 2, making the small shaft part in an inclined state. When the small shaft part is horizontally placed in the placement cavity 1 and rotates in the shot blasting machine with the hanging cage 5, due to the existence of centrifugal force, the small shaft part has a tendency to slide away from the rotation axis and has a probability of falling out of the placement cavity 1. The setting of the limiting protrusion 2 makes the small shaft part in an inclined state, which can offset a part of the centrifugal force in the horizontal direction, prevent the small shaft part from sliding out of the placement cavity 1, and improve the stability of the shot blasting process; at the same time, when the shot blast collides with the end face of the small shaft part, a certain acting force is generated, which will cause the small shaft part to have a risk of falling out of the installation cage 6. The setting of the limiting protrusion 2 offsets the reaction force in the horizontal direction to a certain extent and reduces the probability of the small shaft part falling out of the installation cage 6.

[0050] Preferably, a partition plate 3 is provided between the upper cover 61 and the base 62. The partition plate 3 is arranged parallel to the base 62 and is located near the midpoint between the upper cover 61 and the base 62. The partition plate 3 divides the placement cavity 1 into two parts, and a limiting protrusion 2 is also provided on the side of the partition plate 3 close to the upper cover 61. Compared with a single longer placement cavity 1, the number of small shaft parts placed in the two shorter placement cavities 1 at the same time is less, and the limitation of the small shaft parts is more stable, further reducing the probability of the small shaft parts falling out of the placement cavity 1 and maintaining the stability of the shot blasting process.

[0051] In other embodiments, according to actual needs, the partition plate 3 can be set to other different numbers to divide the placement cavity 1 into more parts, fully ensuring the stability of the small shaft parts in the placement cavity 1 and ensuring the stability of the shot blasting process.

[0052] Specifically, referring to Figure 3 , the hanging cage 5 includes an upper fixing plate 51, a lower fixing plate 52 and at least one pull rod 53. The two ends of the pull rod 53 are respectively bolted to the upper fixing plate 51 and the lower fixing plate 52 and are perpendicular to the upper fixing plate 51 and the lower fixing plate 52. A space for accommodating the installation cage 6 is formed between the upper fixing plate 51, the lower fixing plate 52 and the pull rod 53, so that the installation cage 6 can be installed on the hanging cage 5 and rotate in the shot blasting machine together with the hanging cage 5;

[0053] At the same time, a shaft rod 4 is fixedly connected to the side of the upper fixing plate 51 and the lower fixing plate 52 far from the pull rod 53. The shaft rod 4 is located at the center position of the upper fixing plate 51 and the lower fixing plate 52. The hanging cage 5 is rotationally connected to the shot blasting machine through the shaft rod 4 and rotates around the axis of the shaft rod 4.

[0054] In this embodiment, multiple pull rods 53 are provided. The multiple pull rods 53 are circumferentially distributed and centered on the rotation axis, which can make the overall structure of the hanging cage 5 more stable.

[0055] Preferably, stepped structures 7 are respectively added between the upper fixing plate 51 and the lower fixing plate 52 and the shaft rod 4. The bottom surface of the stepped structure 7 is fixedly connected to the upper fixing plate 51 and the lower fixing plate 52, and the upper surface is fixedly connected to the shaft rod 4 to increase the connection area between the upper fixing plate 51 and the lower fixing plate 52 and the shaft rod 4, and better fix the shaft rod 4 on the upper fixing plate 51 and the lower fixing plate 52. The stepped structure makes the connection between the shaft rod 4 and the hanging cage 5 more stable, and the hanging cage 5 is more stable when rotating in the shot blasting machine.

[0056] Furthermore, the length of the installation cage 6 is less than the distance between the upper fixing plate 51 and the lower fixing plate 52 to facilitate placing the installation cage 6 inside the hanging cage 5. At the same time, a plurality of fixing holes 9 matching the number of installation cages 6 are provided on the upper fixing plate 51 of the hanging cage 5. A fixing rod 10 is fixedly connected to one side of the upper cover 61 of each installation cage 6 away from the limiting rod 63. Each fixing rod 10 is in clearance fit with each fixing hole 9 respectively, and the fixing rod 10 can form a certain inclination angle in the fixing hole 9; a positioning structure 8 is provided between the lower fixing plate 52 and each base 62. Each positioning structure 8 connects each installation cage 6 to the lower fixing plate 52 respectively, and makes the opening of the placement cavity 1 always face away from the rotation axis of the hanging cage 5. During use, the installation cage 6 is obliquely inserted between the upper fixing plate 51 and the lower fixing plate 52, and the fixing rod 10 is inserted into the fixing hole 9 in an inclined posture, and then the installation cage 6 is positioned by using the positioning structure 8, and the installation cage 6 can be connected to the hanging cage 5.

[0057] Specifically, the length of the fixing rod 10 together with the installation cage 6 is greater than the distance between the upper fixing plate 51 and the lower fixing plate 52. When the positioning structure 8 connects the base 62 to the lower fixing plate 52, the fixing rod 10 always remains in the fixing hole 9, and the side wall of the fixing hole 9 plays a limiting role on the fixing rod 10 to ensure the stability of the installation cage 6 connected to the hanging cage 5.

[0058] Furthermore, referring to Figure 3 and Figure 4 , the positioning structure 8 includes at least two positioning holes 81 and at least two positioning protrusions 82. The positioning holes 81 are opened on the lower fixing plate 52, and the positioning protrusions 82 are provided on the bottom surface of the base 62. The number and position of the positioning holes 81 match those of the positioning protrusions 82 respectively. The positioning protrusions 82 are respectively inserted into the corresponding positioning holes 81 to position the installation cage 6, so that the opening of the placement cavity 1 always faces away from the rotation axis, and better shot blast the end face of the small shaft parts.

[0059] In this embodiment, two positioning protrusions 82 can be provided, and two corresponding positioning holes 81 are also opened. The positioning protrusions 82 and the positioning holes 81 are cooperated in pairs to position the installation cage 6. In other embodiments, according to actual needs, the number of the positioning protrusions 82 and the positioning holes 81 can also be correspondingly set to other numbers. For example, both the positioning protrusions 82 and the positioning holes 81 are provided with three and are distributed in a triangular shape to further improve the positioning effect.

[0060] During installation, the installation cage 6 is placed between the upper fixing plate 51 and the lower fixing plate 52 in an inclined state, then the fixing rod 10 is inserted into the fixing hole 9 obliquely and extends out of the fixing hole 9. Finally, the positioning protrusion 82 is inserted into the positioning hole 81 to make the installation cage 6 in a vertical state and connected to the hanging cage 5, completing the assembly process of the installation cage 6; during disassembly, first lift the installation cage 6 as a whole upward to pull out the positioning protrusion 82 from the positioning hole 81, then tilt the installation cage 6 and pull out the fixing rod 10 from the fixing hole 9 to complete the disassembly process of the installation cage 6.

[0061] Preferably, a plurality of holes are opened on both the upper fixing plate 51 and the lower fixing plate 52. When shot peening the shaft parts, the probability of the hanging cage 5 blocking the shot peening is reduced, so that the shot peening can better contact the shaft parts and bombard the ends of the shaft parts. At the same time, it is avoided that the shot peening accumulates on the hanging cage 5, affecting the rotation and stability of the hanging cage 5.

[0062] The implementation principle of Embodiment 1 of this application is as follows:

[0063] When shot peening the ends of small shaft parts, first stack a plurality of small shaft parts in the placement cavity 1 in the installation cage 6 in sequence. The limiting rod 63 and the blocking rod 64 limit the small shaft parts, and the limiting protrusion 2 lifts the ends of the small shaft parts, so that a plurality of small shaft parts are in an inclined state in the placement cavity 1;

[0064] After a plurality of small shaft parts are stably placed in the installation cage 6, the installation cage 6 is placed between the upper fixing plate 51 and the lower fixing plate 52 in an inclined state, so that the fixing rod 10 is inserted into the fixing hole 9 obliquely and extends out of the fixing hole 9, and then the positioning protrusion 82 is inserted into the positioning hole 81 to connect the installation cage 6 to the hanging cage 5, and keep the end face of the small shaft part to be shot peened always facing away from the direction of the rotating shaft;

[0065] After a plurality of installation cages 6 are installed on the hanging cage 5 in sequence, the shot peening machine drives the hanging cage 5 to rotate around the rotating shaft, and then drives the end faces of the small shaft parts in each installation cage 6 to pass through the shot peening port in sequence, realizing the shot peening treatment of the end faces of the small shaft parts.

[0066] Embodiment 2:

[0067] The difference between this embodiment and Embodiment 1 is as follows:

[0068] The installation cage 6 in this embodiment is different from that in Embodiment 1. Specifically, referring to Figure 5 , the installation cage 6 includes an upper cover 61, a base 62, two limit plates 65 and a baffle 66. The two ends of the limit plates 65 and the baffle 66 are respectively fixedly connected to the upper cover 61 and the base 62 and are perpendicular to the upper cover 61 and the base 62. The two limit plates 65 are respectively located on both sides of the small shaft part, and the plate surfaces of the two limit plates 65 are parallel to each other. The distance between the two limit plates 65 is slightly larger than the diameter of the small shaft part. The baffle 66 abuts against the center of one end of the small shaft part close to the rotating shaft of the hanging cage 5, and the baffle 66 is perpendicular to the two limit plates 65. The two limit plates 65, the baffle 66, the upper cover 61 and the base 62 together enclose a placement cavity 1 with one side open;

[0069] When shot peening the end face of the small shaft part far from the rotating shaft, the two limit plates 65 and the baffle 66 jointly limit the small shaft part. The limit plates 65 prevent it from swinging left and right and falling, and the baffle 66 prevents the acting force generated by shot peening on the shaft part from causing the small shaft part to slide out of the placement cavity 1, ensuring the stability of the small shaft part during the shot peening process.

[0070] The implementation principle of Embodiment 2 of this application is as follows: A plurality of small shaft parts are sequentially stacked in the placement cavity 1 in the installation cage 6. The limit plates 65 and the baffle 66 limit the small shaft parts. The limit protrusions 2 lift the end part of the small shaft part to be shot peened, so that the plurality of small shaft parts are in an inclined state in the placement cavity 1, and the small shaft parts can be stably placed in the placement cavity 1, ensuring the stability of the shot peening process.

[0071] Embodiment 3:

[0072] The positioning structure 8 in this embodiment is different from that in Embodiment 1. Specifically, referring to Figure 6 , the positioning structure 8 includes a positioning protrusion 82 and a positioning hole 81. The positioning hole 81 is opened on the lower fixed disk 52, and the positioning protrusion 82 is arranged on the bottom surface of the base 62. The cross section of the positioning protrusion 82 is polygonal, and the shape of the positioning hole 81 matches that of the positioning protrusion 82. The positioning protrusion 82 is inserted into the positioning hole 81, and the side wall of the positioning hole 81 forms circumferential limitation on the positioning protrusion 82 to prevent the installation cage 6 from rotating.

[0073] Preferably, the cross section of the positioning protrusion 82 and the shape of the positioning hole 81 are set to be triangular. The two cooperate to form a circumferential limiting effect, prevent the installation cage 6 from rotating, keep the opening of the placement cavity 1 always facing away from the rotating shaft direction, and better shot peen the end face of the small shaft part.

[0074] The implementation principle of Embodiment 3 of this application is as follows: The cross-section of the positioning protrusion 82 is set as a polygon, and the positioning hole 81 is correspondingly set as a polygon. The positioning protrusion 82 is inserted into the positioning hole 81, and the two cooperate to perform circumferential limit on the installation cage 6, keeping the end face of the small shaft part to be shot peened always facing away from the direction of the rotating shaft, so as to realize the shot peening treatment of the end face of the small shaft part.

[0075] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A tool for shot peening of small shaft parts, characterized in that: The invention comprises a hanging cage (5) and a mounting cage (6), wherein the hanging cage (5) is rotatably mounted in the shot blasting machine, and the mounting cage (6) is connected to the hanging cage (5). A placement cavity (1) for placing a small shaft member is formed in the mounting cage (6), and the placement cavity (1) is open on the side away from the rotation axis of the hanging cage (5).

2. A tool for shot peening of small shaft parts according to claim 1, characterized in that: The plurality of mounting cages (6) are arranged in a plurality, and the plurality of mounting cages (6) are distributed at equal intervals along a circumference with the rotation axis of the hanging cage (5) as the center.

3. A small shaft shot peening tool according to claim 1, characterized in that: The placement cavity (1) is in the shape of a rectangular parallelepiped. When the mounting cage (6) is connected to the hanging cage (5), the long side of the placement cavity (1) is in a vertical state, and the small shafts are arranged in a single row and stacked in sequence in the placement cavity (1).

4. A tool for shot peening of small shaft parts according to claim 1, characterized in that: A limiting protrusion (2) is provided at the bottom of the placement cavity (1), and the limiting protrusion (2) is located at the opening of the placement cavity (1).

5. A small shaft shot peening tool according to claim 1, characterized in that: A partition plate (3) is provided on the installation cage (6), and the partition plate (3) divides the placement cavity (1) into two parts.

6. A tool for shot peening of small shaft parts according to claim 1, characterized in that: The mounting cage (6) comprises an upper cover (61), a base (62), at least two limiting rods (63) and at least one blocking rod (64); the two ends of the limiting rod (63) are respectively fixedly connected to the upper cover (61) and the base (62); the two ends of the blocking rod (64) are respectively fixedly connected to the upper cover (61) and the base (62); the limiting rods (63) are symmetrically distributed on both sides of the small shaft member and are used to limit the small shaft member; the blocking rod (64) abuts against the end of the small shaft member close to the rotating shaft of the hanging cage (5); and the placement cavity (1) is surrounded by the upper cover (61), the base (62), the limiting rods (63) and the blocking rod (64).

7. A small shaft shot peening tool according to claim 1, characterized in that: The mounting cage (6) comprises an upper cover (61), a base (62), two limit plates (65) and a baffle (66); two ends of the limit plates (65) are respectively fixedly connected to the upper cover (61) and the base (62); two ends of the baffle (66) are respectively fixedly connected to the upper cover (61) and the base (62); the two limit plates (65) are distributed on both sides of the small shaft member and are used to limit the small shaft member; the baffle (66) abuts against the end of the small shaft member close to the rotating shaft of the hanging cage (5); the placement cavity (1) is surrounded by the upper cover (61), the base (62), the two limit plates (65) and the baffle (66).

8. A tool for shot peening of small shaft parts according to claim 2, characterized in that: The top of the hanging cage (5) is provided with a plurality of fixing holes (9) having the same number as the mounting cage (6); the top of the mounting cage (6) is correspondingly provided with a fixing rod (10); the fixing rod (10) is clearance-matched with the fixing hole (9); a positioning structure (8) is provided between the bottom of the hanging cage (5) and the bottom of each mounting cage (6); the positioning structure (8) cooperates with the fixing rod (10) and the fixing hole (9) to connect each mounting cage (6) to the hanging cage (5), and ensures that the opening of the placement cavity (1) is always facing a direction away from the rotation axis of the hanging cage (5).

9. A tool for shot peening of small shaft parts according to claim 8, characterized in that: The positioning structure (8) comprises at least two positioning protrusions (82) and at least two positioning holes (81); the positioning protrusions (82) are arranged at the bottom of the mounting cage (6); the positioning holes (81) are opened at the bottom of the hanging cage (5); the positioning holes (81) correspond one-to-one with the positioning protrusions (82) and are plug-fitted.

10. A tool for shot peening of small shaft parts according to claim 8, characterized in that: The positioning structure (8) comprises a positioning protrusion (82) and a positioning hole (81); the positioning protrusion (82) is arranged at the bottom of the mounting cage (6); the positioning hole (81) is opened at the bottom of the hanging cage (5); the cross section of the positioning protrusion (82) is a polygon; the shape of the positioning hole (81) is correspondingly arranged to be a polygon; the positioning protrusion (82) and the positioning hole (81) are plug-fitted.

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