A bearing full welding device

Abstract

The utility model relates to a kind of bearing full welding device, including rotating shaft flange, motor, including positioning assembly, the positioning assembly has opening its include positioning block and the positioning sheet and spring catch pin fixed on positioning block, the spring catch pin includes positioning pin, spring and cover, the rotating shaft flange includes rotating shaft, the rotating shaft is connected with rotating shaft flange thread, the positioning assembly is fixed with rotating shaft flange, the positioning assembly includes positioning block, positioning sheet, spring catch pin, the positioning sheet is fixedly connected with the positioning block by bolt, spring catch pin is movably arranged in the positioning block along radial direction, the spring catch pin is located inside positioning block when in first state, the spring catch pin is located outside positioning block when in second state.Compared with traditional positioning mode, the whole clamping process is simplified, clamping efficiency is improved by 50%, effectively shorten production working hours, reduce the time cost in batch production.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a bearing full welding device. Background Technology

[0002] With the growing market for power tools, especially their widespread use in the construction and home improvement industries, the requirements for power tools, particularly electric hammers, are becoming increasingly stringent. Many bearings at the rotor output end of power tools now incorporate welding tabs. These tabs prevent gearbox oil from entering the bearing. Currently, most welding tabs on the market use three-point welding. Full welding, as a newer process, offers superior performance in various aspects compared to three-point welding. However, positioning and clamping during welding present challenges, as detailed below.

[0003] (i) The inner hole of the fully welded sheet is larger than the inner hole of the bearing. The inner diameter of the weld sheet is close to the chamfer edge of the inner ring of the bearing. The purpose is to make the weld smoother and more natural after welding, without affecting the inner diameter of the bearing. Due to this characteristic, it is difficult to position the weld sheet by relying on the inner hole.

[0004] (ii) Three-point welding requires three welding points to be made on the welding piece in advance. Three-point welding is formed in one step. It is welded in one step by positioning the inner diameter. The fully welded welding piece requires the bearing to rotate and the welding is completed by laser scanning around one circle. The welding piece must not be displaced during the rotation of the bearing. If displacement occurs, it will affect the welding quality of the bearing. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a bearing full welding device to solve one or more problems in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A bearing full welding device includes a rotating shaft flange, a motor, and a positioning assembly. The positioning assembly has an opening and includes a positioning block, a positioning piece fixed on the positioning block, and a spring catch. The spring catch includes a positioning pin, a spring, and a cover. The spring catch is radially movably disposed on the positioning block. In a first state, the spring catch is located inside the positioning block, and in a second state, the spring catch is located outside the positioning block. The rotating shaft flange includes a rotating shaft, which is threadedly connected to the rotating shaft flange. The positioning assembly is fixedly connected to the rotating shaft flange.

[0007] Preferably, the positioning component is fixedly connected to one end of the connecting block, and the other end of the connecting block is fixedly connected to the rotating shaft flange.

[0008] Preferably, the opening includes a first opening disposed on the positioning block and a second opening disposed on the positioning piece.

[0009] Preferably, a spacer is fitted on the outer side of the rotating shaft, a flange end cover is fitted at the connection between the rotating shaft and the rotating shaft flange, several first angular contact bearings are fitted below the flange end cover and abut against the top of the spacer, and several locking nuts and second angular contact bearings are fitted on the side of the rotating shaft away from the rotating shaft flange.

[0010] Preferably, the flange end cover is provided with a skeleton sealing ring and a retaining ring respectively.

[0011] Preferably, the motor includes a motor shaft, which is connected to a rotating shaft via a flat key.

[0012] Preferably, a sealing end cap is also provided on the outer side of the second angular contact bearing.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows: (i) The positioning component takes into account both the needs of rapid positioning and convenient handling. Its positioning pieces and positioning blocks are precisely matched with the outer diameter contours of the bearing and the welding piece. The bearing can be directly and quickly embedded into the positioning block, and the welding piece can be quickly embedded into the positioning piece to complete the positioning without complicated adjustment steps. Compared with the traditional positioning method, the entire clamping process is simplified, the clamping efficiency is increased by 50%, the production time is effectively shortened, the time cost in mass production is reduced, and the consistency of positioning accuracy is guaranteed, avoiding welding defects caused by manual positioning deviation.

[0014] (ii) The spring pin generates continuous and stable pressure by utilizing the elastic extension and contraction characteristics of the spring. This pressure acts on the outer diameter surface of the bearing, causing the bearing to fit tightly against the positioning surface of the positioning block and remain fixed. Its flexible pressure can adapt to the small dimensional deviations of the bearing's outer diameter, avoiding damage to the bearing surface caused by rigid clamping, and ensuring that the bearing has no axial movement or radial offset during welding rotation. This provides a reliable positioning guarantee for the continuity and uniformity of the weld seam of the full weld of the bearing, further improving the stability of the welding quality. Attached Figure Description

[0015] Figure 1 A schematic diagram of a bearing full-welding device according to an embodiment of the present invention is shown; Figure 2 A front view of a positioning assembly of a bearing full-welding device according to an embodiment of the present invention is shown; Figure 3 This diagram shows a cross-sectional view of a bearing full welding device according to an embodiment of the present invention in the AA direction. Figure 4 A structural diagram of the positioning assembly of a bearing full-welding device according to an embodiment of the present invention is shown. Figure 5 A side view of a bearing full-welding device according to an embodiment of the present invention is shown; Figure 6 This diagram shows a cross-sectional view of a bearing full welding device in the BB direction according to an embodiment of the present invention. Figure 7 This invention provides a schematic diagram of the structure of a flange end cover for a bearing full welding device according to an embodiment of the present invention. Figure 8 A schematic diagram of the structure of a motor for a bearing full welding device according to an embodiment of the present invention is shown.

[0016] Marked in the attached diagram: 1. Positioning assembly; 101. Positioning block; 102. Positioning piece; 103. Spring clip; 1031. Positioning pin; 1032. Spring; 1033. Cover; 104. Opening; 1041. First opening; 1042. Second opening; 2. Connecting block; 3. Rotating shaft flange; 301. Flange end cover; 3011. Skeleton sealing ring; 3012. Retaining ring; 302. Locking nut; 303. First angular contact bearing; 304. Second angular contact bearing; 305. Spacer; 306. Rotating shaft; 4. Motor; 401. Flat key; 402. Motor shaft; 5. Sealing end cover. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a bearing full-welding equipment proposed by this utility model, in conjunction with the accompanying drawings and specific embodiments, will further illustrate its purpose. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0018] like Figure 1-8As shown, the bearing full welding device of this embodiment includes a rotating shaft flange 3, a motor 4, and a positioning assembly 1. The positioning assembly 1 has an opening 104 and includes a positioning block 101, a positioning piece 102 fixed on the positioning block 101, and a spring latch 103. The positioning piece 102 is fixedly connected to the positioning block 101 by bolts. The spring latch 103 includes a positioning pin 1031, a spring 1032, and a cover 1033. The spring latch 103 is radially movably disposed on the positioning block 101. In the first state, the spring latch 103 is located inside the positioning block 101, and in the second state, the spring latch 103 is located outside the positioning block 101. First state: When the operator needs to install the bearing, the positioning pin 1031 of the spring latch 103 can be manually pressed. At this time, the spring latch 103... Spring 1032 is compressed by the cover 1033, causing the positioning pin 1031 to move into the positioning block 101 until the end face of the positioning pin 1031 is flush with the inner arc-shaped positioning surface of the positioning block 101. At this time, the spring pin 103 is in the first state. Second state: When the bearing is pushed to the preset positioning position, the outer wall of the bearing no longer exerts a squeezing force on the positioning pin 1031 of the spring pin 103. At this time, the compressed spring 1032 releases elastic potential energy, pushing the positioning pin 1031 to move out of the positioning block 101 until the outer side of the positioning block 101. At this time, the spring pin 103 is in the second state. The rotating shaft flange 3 includes a rotating shaft 306, which is threadedly connected to the rotating shaft flange 3. The positioning assembly 1 is fixedly connected to the rotating shaft flange 3.

[0019] Please refer to Figure 1 Furthermore, the positioning component 1 is fixedly connected to one end of the connecting block 2, and the other end of the connecting block 2 is fixedly connected to the rotating shaft flange 3. During operation, the rotating shaft flange 3 rotates together with the positioning component 1.

[0020] Please refer to Figure 4 Furthermore, the opening 104 includes a first opening 1041 disposed on the positioning block 101 and a second opening 1042 disposed on the positioning piece 102.

[0021] Please refer to Figure 6 Furthermore, a spacer 305 is fitted onto the outer side of the rotating shaft 306, and a flange end cover 301 is fitted onto the connection between the rotating shaft 306 and the rotating shaft flange 3. Several first angular contact bearings 303 are fitted below the flange end cover 301 and abut against the upper part of the spacer 305. Several locking nuts 302 and second angular contact bearings 304 are fitted onto the side of the rotating shaft 306 away from the rotating shaft flange 3. The spacer 305 between the bearings tightens the first angular contact bearings 303 to prevent the entire rotating shaft 306 from moving up and down. The locking nuts 302 control the axial position of the upper and lower parts and lock them together to position the lower bearing.

[0022] Please refer to Figure 7Furthermore, the flange end cover 301 is provided with a skeleton sealing ring 3011 and a retaining ring 3012 to seal and protect the rotating shaft flange 3.

[0023] Please refer to Figure 6 , Figure 8 Furthermore, the motor 4 includes a motor shaft 402, which is connected to the rotating shaft 306 via a flat key 401.

[0024] Please refer to Figure 6 Furthermore, a sealing end cap 5 is also provided on the outer side of the second angular contact bearing 304.

[0025] Accordingly, in use, the operator smoothly pushes the bearing into the positioning surface at the bottom of the groove along the first opening 1041 of the positioning block 101 of the positioning component 1. At this time, the positioning pin 1031 automatically springs up under the elastic force of the spring 1032 and abuts against the outer diameter surface of the bearing. Through continuous and stable pressure, the bearing is tightly attached to the inner positioning wall of the positioning block 101, achieving reliable fixing of the bearing without loosening or displacement. Subsequently, the operator precisely attaches the flat welding piece to the bearing end face to be welded, so that the welding piece completes the outer diameter positioning through the second opening 1042 of the positioning piece 102 on the positioning component 1, ensuring that the welding piece is flush with the bearing end face and that the coaxiality meets the welding requirements. After starting the full welding machine, the welding operation is carried out simultaneously. The motor 4 drives the positioning component 1 to rotate at a uniform speed according to the preset rotation speed and welding revolution, ensuring that the mating surface of the bearing and the welding piece forms a continuous and uniform full weld. After the tooling rotates one revolution, the welding operation is completed.

[0026] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bearing full welding device, comprising a rotating shaft flange and a motor, characterized in that: The device includes a positioning assembly having an opening that includes a positioning block, a positioning piece fixed to the positioning block, and a spring latch. The spring latch includes a positioning pin, a spring, and a cover. The spring latch is radially movably disposed on the positioning block. In a first state, the spring latch is located inside the positioning block, and in a second state, the spring latch is located outside the positioning block. The rotating shaft flange includes a rotating shaft that is threadedly connected to the rotating shaft flange. The positioning assembly is fixedly connected to the rotating shaft flange.

2. The bearing full welding device as described in claim 1, characterized in that: The positioning component is fixedly connected to one end of the connecting block, and the other end of the connecting block is fixedly connected to the rotating shaft flange.

3. The bearing full welding device as described in claim 1, characterized in that: The opening includes a first opening on the positioning block and a second opening on the positioning piece.

4. The bearing full welding device as described in claim 1, characterized in that: A spacer sleeve is fitted on the outer side of the rotating shaft, and a flange end cover is fitted at the connection between the rotating shaft and the rotating shaft flange. Several first angular contact bearings are fitted below the flange end cover and abut against the top of the spacer sleeve. Several locking nuts and second angular contact bearings are fitted on the side of the rotating shaft away from the rotating shaft flange.

5. The bearing full welding device as described in claim 4, characterized in that: The flange end cover is equipped with a skeleton sealing ring and a retaining ring respectively.

6. The bearing full welding device as described in claim 1, characterized in that: The motor includes a motor shaft, which is connected to a rotating shaft via a flat key.

7. The bearing full welding device as described in claim 4, characterized in that: A sealing end cap is also provided on the outer side of the second angular contact bearing.

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