A new type of shot blasting tooling and method of use

Abstract

The application relates to the field of tool fixtures, in particular to a novel shot blasting tool and a use method. The application discloses a novel shot blasting tool, which is characterized by comprising: a connecting plate, the connecting plate is in a triangular structure, the connecting plate is provided with a hoisting hole, the connecting plate is provided with a plurality of connecting plates, and the connecting plate is used for providing support for the tool; a supporting plate, the supporting plate is in a V-shaped structure, both surfaces of the supporting plate are provided with a shot taking part, the shot taking part is used for cleaning steel shots in the tool, the front and back openings of the supporting plate are connected with the connecting plate, the supporting plate is provided in an upside-down mode, the top of the supporting plate is provided with a contact part, the contact part is in a sheet shape and protrudes outward, the top of the contact part is in a tooth shape, and the contact part is used for reducing the contact area with the bottom of a gear ring. The shot blasting cleaning of the bottom of the gear ring is insufficient, and the shot blasting needs to be performed twice, which leads to the problem that the surface roughness exceeds the standard, the area of the shot blasting cleaning is increased, and the effect that the shot blasting does not need to be performed twice is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tooling fixtures, in particular to a new type of shot blasting tooling and a use method thereof. BACKGROUND

[0002] The gear and ring gear in the gearbox of a wind turbine are relatively large in size and need to be rough machined after being forged into shape. Since the forging process can cause a certain degree of internal stress, in order to improve the material properties of the parts and reduce the influence of these internal stresses, stress relief annealing treatment is needed, which involves heating the parts to an appropriate temperature and maintaining for a certain period of time, and then slowly cooling down, so as to reduce or eliminate the internal stress. This can improve the material properties of the gear and ring gear and enhance their durability.

[0003] However, during the stress relief annealing process, the surface of the ring gear will be oxidized when it is in contact with the air. The existing tooling has a large contact area with the bottom surface of the ring gear and is close to the lower throwing head of the shot blasting machine, so the bottom of the ring gear is not cleaned enough by shot blasting and needs to be turned over for a second time for shot blasting. However, after the second shot blasting, the surface roughness of the ring gear may exceed the standard.

[0004] Therefore, we need a new type of shot blasting tooling and a use method, which can solve the problem of insufficient shot blasting cleaning of the bottom of the ring gear, which needs to be turned over for a second time for shot blasting, resulting in excessive surface roughness. SUMMARY

[0005] The purpose of the present application is to provide a new type of shot blasting tooling and a use method, which can solve the problem of insufficient shot blasting cleaning of the bottom of the ring gear, which needs to be turned over for a second time for shot blasting, resulting in excessive surface roughness.

[0006] To achieve the above purpose, the embodiments of the present application adopt the following technical solutions: a new type of shot blasting tooling, comprising: a connecting plate, the connecting plate is a triangular structure, the connecting plate is provided with a lifting hole, and the connecting plate has a plurality of connecting plates for providing support for the tooling; a support plate, the support plate is a V-shaped plate, both sides of the support plate are provided with a shot taking part for cleaning the steel shots inside the tooling, the front and rear openings of the support plate are connected with the connecting plate, the support plate is set upside down, the top of the support plate is provided with a contact part, the contact part is a sheet and protrudes outward, the top of the contact part is a tooth shape, and the contact part is used to reduce the contact area with the bottom of the ring gear.

[0007] In the technical scheme, the high-alloy high-strength wear-resistant steel plate S310 is welded into a triangular shape, the load strength calculation of the tooling is carried out, the tooling can fully meet the requirement of bearing 16 tons, the triangular design is adopted to improve the stability of the tooling and reduce the material cost, the area of the contact with the bottom of the gear ring is reduced through the narrow contact part, and the blind area of the shot blasting is minimized. The problem that the shot blasting of the bottom of the gear ring is insufficient and the gear ring needs to be turned over twice for shot blasting is solved, the surface roughness of the gear ring is not over-standard, the area of the shot blasting is increased, and the effect that the gear ring does not need to be turned over twice for shot blasting is achieved.

[0008] Further, according to the embodiment of the application, the tooling is made of high-alloy high-strength wear-resistant steel.

[0009] Further, according to the embodiment of the application, the tooling is fixed by welding.

[0010] Further, according to the embodiment of the application, the tooling is a triangular pyramid.

[0011] Further, according to the embodiment of the application, the connecting plate has two.

[0012] Further, according to the embodiment of the application, the pellet taking part is symmetrically arranged.

[0013] Further, according to the embodiment of the application, the pellet taking part is a square hole.

[0014] Further, according to the embodiment of the application, the support plate is composed of two square plates.

[0015] Further, according to the embodiment of the application, the included angle between the square plates is an acute angle.

[0016] In order to achieve the above purpose, the embodiment of the application also discloses a novel shot blasting tooling using method, which comprises the following steps:

[0017] Placing, the tooling is hoisted by passing the rope through the two hoisting holes, and the plurality of toolings are placed on the workbench in sequence;

[0018] Adjusting, the distance between the toolings is adjusted according to the size of the gear ring to be shot blasted, and the plurality of toolings are symmetrically placed on the workbench on the same circumference;

[0019] Hoisting, the gear ring is moved to the workbench by hoisting and aligned with the tooling, the gear ring is slowly hoisted to the tooling, and it is ensured that one or two tooth positions are left outside each tooling;

[0020] Shot blasting, after the gear ring is shot blasted, the steel shot in the tooling is cleaned through the pellet taking part.

[0021] Compared with the prior art, the application has the following beneficial effects: the application adopts a new type of shot blasting tool and a use method, the high alloy high strength wear-resistant steel plate S310 is welded into a triangle, through the calculation of the load strength of the tool, the requirement of 16 tons of overall load bearing of the tool is completely met, the stability of the tool is improved through the triangular design, the material cost is reduced, the area of contact with the bottom of the gear ring is reduced through the narrow contact part, and the shot blasting blind area is maximally reduced. The problem that the shot blasting cleaning of the bottom of the gear ring is insufficient and needs to be turned over twice to be shot blasted, resulting in that the surface roughness exceeds the standard, is solved, the area of shot blasting cleaning is increased, and the effect that the shot blasting is not needed to be turned over twice is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described below in combination with the drawings and examples.

[0023] Fig. 1 is a schematic diagram of a new type of shot blasting tool structure of the example.

[0024] Fig. 2 is a schematic diagram of a new type of shot blasting tool placement of the example.

[0025] Fig. 3 is a schematic diagram of a gear ring placement of the example. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme of the application clear and complete, and the advantages more clear and obvious, the embodiments of the application will be further described in combination with the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the application, not all the embodiments, and are only used to explain the embodiments of the application, and do not limit the embodiments of the application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the application.

[0027] In the description of the application, it should be noted that the terms “center”, “middle”, “upper”, “lower”, “left”, “right”, “inner”, “outer”, “top”, “bottom”, “side”, “vertical”, “horizontal” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the application. In addition, the terms “one”, “first”, “second”, “third”, “fourth”, “fifth”, “sixth” are only for description purposes, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] For the purpose of simplicity and illustration, the principles of the embodiments are primarily described by way of example. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments can be practiced without the specific details and that numerous implementation choices are possible. In some instances, well-known methods and structures have not been described in detail in order to avoid unnecessarily obscuring the embodiments. Also, all embodiments can be used in combination with each other. Embodiments

[0030] As Figs. 1-3 shown, the application discloses a new type of shot blasting tool, characterized in that it comprises: a connecting plate, the connecting plate is a triangular structure, the connecting plate is provided with a lifting hole, and the connecting plate is used to provide support for the tool; a support plate, the support plate is a V-shaped plate, both sides of the support plate are provided with a pellet taking part, the pellet taking part is used to clean the steel pellets inside the tool, the front and rear openings of the support plate are connected with the connecting plate, the support plate is set upside down, the top of the support plate is provided with a contact part, the contact part is sheet-shaped and protrudes outward, the top of the contact part is tooth-shaped, and the contact part is used to reduce the contact area with the bottom of the gear ring.

[0031] Specifically, the connecting plate has two, which are symmetrically placed, the lifting holes are aligned with each other, the lifting holes are arranged at the upper end of the connecting plate, close to the top of the connecting plate, the lifting holes are used to cooperate with the crane to lift the tool, so that the tool can move stably with the bottom surface facing down, preventing the tool from rotating and being difficult to place stably during lifting.

[0032] Specifically, the support plate is composed of two rectangular plates, which have a certain included angle between each other and are fixed by welding. The pellet taking part is arranged in the middle of the rectangular plate, and the pellet taking part is symmetrically arranged after welding. The pellet taking part is a square hole, which can facilitate the cleaning of the steel pellets entering the inside of the tool from the lifting hole during the shot blasting of the gear ring, and can also reduce the weight of the overall triangular tool, so as to facilitate the adjustment of the distance between the four tools to adapt to different diameter gear rings.

[0033] Specifically, the contact part is arranged at the top end of the support plate and extends outward. The top teeth of the contact part are composed of a plurality of square blocks, the square blocks are spaced apart by a certain distance, and the square blocks are arranged along the top of the support plate. Through the outwardly protruding contact part, the gear ring can be lifted up, so that the gear ring can be away from the support plate, preventing the tool from contacting the gear ring bottom surface with a large area and being close to the lower throwing head of the shot blasting machine, thereby further reducing the gear ring bottom contact area and increasing the distance from the lower throwing head of the shot blasting machine, so that the area of the gear ring cleaned by the shot blasting is increased. The entire gear ring outer surface is cleaned by shot blasting, and the surface roughness is between 60-66um. The gear ring only needs to be cleaned by shot blasting once to meet the requirements, and does not need to be cleaned by shot blasting again. And through the tooth structure of the contact part, the gear ring can be hoisted on the tool, and the shot blasting of the gear ring can be kept stable at a rotation speed of 2-3 minutes per circle of the trolley rotary table, and the position does not deviate.

[0034] The present application is composed of two connecting plates, a support plate composed of two rectangular plates, and a contact part. In use, generally four are a group. The tool is entirely made of high-alloy high-strength wear-resistant steel plate S310 welded into a triangular pyramid. The triangular design has good stability, and the use of materials is minimized, which can save costs. After load strength calculation of the tool, the high-alloy steel plate is 16mm thick, and four-point support is adopted, which can completely meet the requirement of 16 tons of overall load bearing of the tool, reduce the weight of the overall tool, and save the cost of steel. The high-alloy steel plate after cutting according to the drawing is subjected to high-temperature solid solution treatment, so that the hardness of the high-alloy steel plate reaches 50-55HRC. After solid solution treatment, the hardness is high and the wear resistance is higher, which can prolong the service life of the tool under the shot blasting working condition by more than 3 times. After the 5 high-alloy steel plates of different sizes are welded by special welding process, high-temperature stress relief annealing is carried out within 2 hours, which can reduce the stress generated by welding, ensure the quality of the weld, and at the same time ensure the overall strength of the tool, so that the contact part can support the gear ring, prevent the tool from contacting the gear ring bottom surface with a large area and being close to the lower throwing head of the shot blasting machine, thereby increasing the shot blasting cleaning area and achieving the effect of not needing secondary turning and shot blasting, preventing problems such as excessive surface roughness of the gear ring after secondary shot blasting.

[0035] The novel shot blasting tool of the present application not only has simple and convenient use, easy loading and unloading, but also can be used for shot blasting of gear rings of different specifications without the need to replace different shot blasting tools. At the same time, it solves the problems of large contact area between the gear ring bottom surface and the tool and close distance from the lower throwing head of the shot blasting machine, insufficient shot blasting cleaning of the gear ring bottom, the need for secondary turning and shot blasting, and excessive surface roughness of the gear ring after secondary shot blasting. The tool meets the quality requirements of gear ring shot blasting, realizes rapid product change, improves efficiency, and can operate safely and reliably. EMBODIMENT

[0036] The present application further discloses a novel shot blasting tool using method, comprising the following steps:

[0037] Placing, hoisting the tooling by passing the rope through the two hoisting holes, and sequentially hoisting the plurality of toolings onto the workbench;

[0038] Adjusting, adjusting the distance between the toolings according to the size of the gear ring to be shot, and symmetrically placing the plurality of toolings on the same circumference on the workbench;

[0039] Hoisting, moving the gear ring to the workbench by hoisting, aligning the gear ring with the tooling, slowly hoisting the gear ring onto the tooling, and ensuring that each tooling leaves one to two tooth positions outside the gear ring;

[0040] Shot blasting, after the gear ring is shot blasted, the steel shot inside the tooling is cleaned through the shot collecting part.

[0041] Although the above describes the specific embodiments of the present application in order to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments, and all applications created by utilizing the concept of the present application are within the protection scope of the present application as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims.

Claims

1. A novel shot blasting fixture, characterized in that, include: A connecting plate, which is triangular in structure, is provided with multiple lifting holes, and is used to provide support for the tooling. The support plate is V-shaped and has shot-collecting parts on both sides for cleaning steel shot inside the tooling. The front and rear openings of the support plate are connected to the connecting plate. The support plate is inverted and has a contact part on its top. The contact part is plate-shaped and protrudes outward. The top of the contact part is toothed and is used to reduce the contact area with the bottom of the gear ring.

2. The novel shot blasting fixture according to claim 1, characterized in that, The tooling is made of high-alloy, high-strength, wear-resistant steel.

3. The novel shot blasting fixture according to claim 1, characterized in that, The tooling is fixed by welding.

4. The novel shot blasting fixture according to claim 1, characterized in that, The tooling is a triangular cone.

5. The novel shot blasting fixture according to claim 1, characterized in that, The connecting plate has two.

6. The novel shot blasting fixture according to claim 1, characterized in that, The pellet-taking sections are symmetrically arranged.

7. A novel shot blasting fixture according to claim 6, characterized in that, The pellet-taking section has a square hole.

8. The novel shot blasting fixture according to claim 1, characterized in that, The support plate consists of two square plates.

9. A novel shot blasting fixture according to claim 8, characterized in that, The included angle between the square plates is an acute angle.

10. A method of using the novel shot blasting fixture as described in claim 1, comprising the following steps: Placement is achieved by hoisting the tooling through two hoisting holes with ropes, and then sequentially placing multiple pieces of the tooling onto the worktable. Adjust the distance between the toolings according to the size of the gear ring to be shot blasted, and make multiple toolings symmetrically placed on the worktable on the same circumference; The gear ring is hoisted and moved to the workbench, and the gear ring is aligned with the tooling. The gear ring is then slowly hoisted onto the tooling, ensuring that each tooling has one or two tooth positions outside the gear ring. After shot blasting of the gear ring is completed, the steel shot inside the tooling is cleaned through the shot collection section.

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