Pipe beveling tool

Abstract

This utility model relates to the field of steel pipe processing technology and discloses a pipe beveling tool, including a tool holder, a tool post, a cutting blade, and a guide component. The tool post is mounted on the tool holder, the cutting blade is fixed on the tool post, and the guide component is a guide positioning sleeve. One end of the tool holder extending out of the tool post is configured as a guide positioning sleeve shaft that cooperates with the guide positioning sleeve. A guide post cutter head is fixedly connected to the front end of the guide positioning sleeve shaft. The guide positioning sleeve is located between the guide post cutter head and the tool post and is rotatable relative to the guide positioning sleeve shaft. The outer diameter of the guide post cutter head is smaller than the outer diameter of the guide positioning sleeve. By setting a guide positioning head to cooperate with the guide positioning sleeve to fix the manifold pipe, the technical problem of damage to the inner wall of the manifold pipe caused by the processing device in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, specifically to a sliding beveling tool for pipes. Background Technology

[0002] As an indispensable pressure-bearing component in the boiler structure, the header of a power plant boiler plays a crucial role in media distribution and collection. The connection between the header and the heating surface tubes relies on the tube joint, which is achieved through welding. Before welding, a weld bevel must be carefully machined on the tube joint. Traditionally, the beveling is done using a tool equipped with a fixed guide post positioning structure, through a drilling process. However, after completing the beveling, this tool often leaves annular mechanical scratches on the inner wall of the tube joint, with varying depths, typically about 0.5 to 1 mm.

[0003] To eliminate these mechanical scratches, grinding is currently the common method. However, this practice not only significantly increases production costs but also extends product delivery cycles. More importantly, the noise and metal dust generated during grinding pose challenges to the construction of green workshops. Furthermore, while grinding can remove scratches, it also thins the pipe walls, thereby weakening the strength of pipe joints and creating potential risks to product quality and safety.

[0004] Existing technology, application number CN200920318357.9, entitled "Special Tool for Processing Pipe Joint Beveling," discloses a special tool for processing pipe joint beveling, including a guide rod. The guide rod is characterized by having a radial sliding hole, within which an adjusting rod is mounted via a locking bolt. The adjusting rod is fixedly connected to a tool holder, and a cutting insert with the same radial direction as the tool rod is mounted on the tool holder via a locking bolt. While the above technical solution can process pipe joint beveling, it suffers from the technical problem of easily damaging the inner wall of the pipe joint. Utility Model Content

[0005] In order to solve the technical problem that the pipe joint processing device in the prior art will damage the inner wall of the pipe joint, this utility model proposes a pipe beveling tool.

[0006] The pipe beveling tool includes a tool holder, a tool post, a cutting blade, and a guide component. The tool post is mounted on the tool holder, the cutting blade is fixed on the tool post, and the guide component is a guide positioning sleeve. One end of the tool holder extending out of the tool post is configured as a guide positioning sleeve shaft that mates with the guide positioning sleeve. A guide post cutter head is fixedly connected to the front end of the guide positioning sleeve shaft. The guide positioning sleeve is located between the guide post cutter head and the tool post, and the guide positioning sleeve is rotatable relative to the guide positioning sleeve shaft. The outer diameter of the guide post cutter head is smaller than the outer diameter of the guide positioning sleeve.

[0007] The aforementioned pipe beveling tool has two sets of cutting tool mounting holes symmetrically arranged on the tool holder. The included angle between the central axes of the two sets of cutting tool mounting holes is adjusted according to the beveling of the pipe to be processed. A connecting groove is provided through the center of the tool holder.

[0008] The aforementioned pipe beveling tool has a tool holder and a tool post connecting part. The tool post connecting part is fixedly sleeved on the tool holder and installed in conjunction with the connecting groove. The end of the tool holder that extends out of the tool post is also provided with a positioning step that matches the connecting groove.

[0009] The aforementioned pipe beveling tool has a helical tooth at the front end of the guide positioning sleeve shaft, and a helical tooth groove matching the helical tooth is provided on the guide post cutter head.

[0010] The aforementioned pipe beveling tool uses a metal sleeve with a clearance fit to the guide positioning sleeve shaft.

[0011] The aforementioned pipe beveling tool has a guide positioning sleeve mounted on the guide positioning sleeve shaft via a rolling bearing. The guide positioning sleeve is interference-fitted with the outer ring of the rolling bearing, and the guide positioning sleeve shaft is interference-fitted with the inner ring of the bearing structure.

[0012] The outer diameter of the guide post cutter head of the aforementioned pipe beveling tool is 1-2 mm smaller than the outer diameter of the guide positioning sleeve.

[0013] The beneficial effects of this utility model include: by setting a guide positioning head and a guide positioning sleeve to fix the pipe, the technical problem that the processing device in the prior art will damage the inner wall of the pipe is solved, and the potential quality hazards of pipe wall thickness reduction and strength reduction caused by cutting operation are effectively avoided. Attached Figure Description

[0014] Figure 1 This is an exploded view of the overall structure of the pipe beveling tool of this utility model.

[0015] Figure 2 This is a front view of the tool holder 1 for pipe beveling of this utility model.

[0016] Figure 3 for Figure 2 Schematic diagram of section AA.

[0017] Figure 4 for Figure 2 Schematic diagram of section B.

[0018] Figure 5 This is a front view of the tool holder 2 for pipe beveling in this utility model.

[0019] Figure 6 This is a top view of the tool holder 2 for pipe beveling according to this utility model.

[0020] Figure 7 This is a front view of the guide post cutter head 6 of the pipe beveling tool of this utility model.

[0021] Figure 8 This is a top view of the guide post cutter head 7 of the pipe beveling tool of this utility model.

[0022] The markings in the diagram are as follows: 1-tool holder, 11-tool shank, 12-tool post connection, 13-helical tooth, 2-tool post, 21-cutting knife mounting hole, 22-connecting groove, 23-positioning step, 3-cutting knife, 4-guide positioning sleeve, 5-guide positioning sleeve shaft, 6-guide post cutter head, 61-helical tooth groove, 7-tube. Detailed Implementation

[0023] The present invention will now be described in conjunction with the accompanying drawings.

[0024] Example 1: like Figure 1 The diagram shows the pipe beveling tool of this utility model, comprising a tool holder 1, a tool post 2, a cutting blade 3, and a guide component. The tool post 2 is mounted on the tool holder 1, and the cutting blade 3 is fixed on the tool post 2 and can rotate with the tool post 2 to cut the pipe. The guide component is a guide positioning sleeve 4, which has a clearance fit with the inner wall of the pipe joint to fix its position. One end of the tool holder 1 extending out of the tool post 2 is configured as a guide positioning sleeve shaft 5 that cooperates with the guide positioning sleeve 4. A guide post blade is fixedly connected to the front end of the guide positioning sleeve shaft 5. The head 6, the guide post cutter head 6, is a hollow cutter head with threads on its outer surface. It has a rotary cutting function and can clean foreign objects from the inner wall of the pipe joint. The guide positioning sleeve 4 is located between the guide post cutter head 6 and the tool holder 2, and the guide positioning sleeve 4 can rotate relative to the guide positioning sleeve shaft 5. This allows the entire machining tool to rotate relative to the pipe joint with the guide positioning sleeve shaft 5 as the axis, thereby completing the cutting work. The outer diameter of the guide post cutter head 6 is smaller than the outer diameter of the guide positioning sleeve 4, which can clean foreign objects without damaging the inner wall of the pipe joint.

[0025] Furthermore, two sets of cutting blade mounting holes 21 are symmetrically arranged on the left and right sides of the tool holder 2. The opening size of the two sets of cutting blade mounting holes 21 is adjusted according to the size of the cutting blade 3, and a clearance fit is formed between them. The included angle between the central axes of the two sets of cutting blade mounting holes 21 is adjusted according to the bevel of the pipe to be processed. A connecting groove 22 is provided through the center of the tool holder 2 for connecting and installing with the tool bar 1.

[0026] Furthermore, the tool holder 1 includes a tool handle 11 and a tool post connecting part 12. The tool post connecting part 12 is fixedly sleeved on the tool handle 11 and is installed in conjunction with the connecting groove 22. The end of the tool handle 11 that extends out of the tool post 2 is also provided with a positioning step 23 that matches the connecting groove 22. During installation, the positioning step 23 cooperates with the tool post positioning groove 13, making it easier for technicians to judge whether the tool holder 1 and the tool post 2 are installed in place.

[0027] Furthermore, the front end of the guide positioning sleeve shaft 5 is also provided with helical teeth 13, and the guide post cutter head 6 is provided with helical tooth grooves 61 that match the helical teeth 13, making assembly more convenient and less likely to cause deformation due to cutting force, thus affecting the reliability of the tool.

[0028] Furthermore, in this embodiment, the guide positioning sleeve 4 is a metal sleeve that is clearance-fitted with the guide positioning sleeve shaft 5, and lubricant is added between the guide positioning sleeve 4 and the guide positioning sleeve shaft 5 to achieve clearance fit.

[0029] Furthermore, the outer diameter of the guide post cutter head 6 is 1-2 mm smaller than the outer diameter of the guide positioning sleeve 4.

[0030] In this embodiment, during installation, the tool holder 1 and tool post 2 utilize a mortise and tenon structure with a guide key and tool post for easier disassembly. A positioning step 23 is also provided to facilitate determining if the installation is in place. After the tool post 2 and cutting blade 3 are installed, the tool handle 11 is installed to the drive device interface (in this embodiment, the drive device is a drilling machine), and the guide positioning sleeve 4 is inserted into the pipe joint for fixation. During cutting operations, the drive device drives the entire tool to rotate via the fixedly connected tool handle. The guide positioning sleeve 4 rotates coaxially with respect to the guide positioning sleeve shaft 5. In this embodiment, when the inner diameter of the pipe 7 connector is less than 100mm, the guide positioning sleeve 4 is made of metal. The guide positioning sleeve 4 and the guide positioning sleeve shaft 5 are clearance fit and lubricant (cutting lubricant coolant is used in this embodiment) is added during the processing. The guide positioning sleeve 4 is fixed to the pipe connector, so that the cutting device will not damage the inner wall of the pipe connector. In addition, during the entire rotation cutting process of the tool, the guide post cutter head 6 can remove foreign objects from the inner wall of the pipe. Since the diameter of the guide post cutter head 6 is smaller than the outer diameter of the guide positioning sleeve 4, it will not damage the inner wall of the pipe while cleaning foreign objects.

[0031] Example 2: Furthermore, when the inner diameter of the pipe joint to be processed is greater than or equal to 100mm, the guide positioning sleeve 4 is installed on the guide positioning sleeve shaft 5 through a rolling bearing. The guide positioning sleeve 4 is interference-fitted with the outer ring of the rolling bearing, and the guide positioning sleeve shaft 5 is interference-fitted with the inner ring of the bearing structure.

[0032] Based on Example 1, a rolling bearing structure is set between the guide positioning sleeve 4 and the guide positioning sleeve shaft 5, which can further reduce the friction between the guide positioning sleeve 4 and the guide positioning sleeve shaft 5 and extend the service life of the component.

[0033] Compared with the prior art, the pipe beveling tool of this utility model does not require cleaning of the pipe joint during use. The guide post cutter head 6 first cleans the foreign objects inside the pipe joint, and then the guide positioning sleeve 4 enters the cleaned inner wall of the pipe joint. After the guide positioning sleeve 4 is fully in, the beveling is then processed. This avoids damage to the inner wall of the pipe joint, eliminates the cleaning work in the preceding process and the grinding and defect removal work on the inner wall of the pipe joint after processing, improves processing quality and work efficiency, solves the technical problem that the processing device in the prior art will damage the inner wall of the pipe, and effectively avoids the potential quality hazards of reduced pipe wall thickness and decreased strength caused by cutting operations.

Claims

1. A pipe beveling tool, comprising a tool holder (1), a tool post (2), a cutting blade (3), and a guide member, wherein the tool post (2) is mounted on the tool holder (1), and the cutting blade (3) is fixed on the tool post (2), characterized in that: The guide component adopts a guide positioning sleeve (4). The end of the tool bar (1) extending out of the tool holder (2) is set as a guide positioning sleeve shaft (5) that cooperates with the guide positioning sleeve (4). The front end of the guide positioning sleeve shaft (5) is fixedly connected to a guide post cutter head (6). The guide positioning sleeve (4) is located between the guide post cutter head (6) and the tool holder (2). The guide positioning sleeve (4) is rotatable relative to the guide positioning sleeve shaft (5). The outer diameter of the guide post cutter head (6) is smaller than the outer diameter of the guide positioning sleeve (4).

2. The pipe beveling tool according to claim 1, characterized in that: The tool holder (2) is provided with two sets of cutting tool mounting holes (21) symmetrically arranged on the left and right. The included angle between the central axes of the two sets of cutting tool mounting holes (21) is adjusted according to the bevel of the pipe to be processed. The tool holder (2) is provided with a connecting groove (22) through the center.

3. The pipe beveling tool according to claim 2, characterized in that: The tool holder (1) includes a tool handle (11) and a tool holder connecting part (12). The tool holder connecting part (12) is fixedly sleeved on the tool handle (11) and is installed in conjunction with the connecting groove (22). The end of the tool handle (11) extending out of the tool holder (2) is also provided with a positioning step (23) that matches the connecting groove (22).

4. The pipe beveling tool according to claim 1, characterized in that: The front end of the guide positioning sleeve (5) is also provided with a helical tooth (13), and the guide post cutter head (6) is provided with a helical tooth groove (61) that matches the helical tooth (13).

5. The pipe beveling tool according to claim 1, characterized in that: The guide positioning sleeve (4) is a metal sleeve that is clearance-fitted with the guide positioning sleeve shaft (5).

6. The pipe beveling tool according to claim 1, characterized in that: The guide positioning sleeve (4) is mounted on the guide positioning sleeve shaft (5) via a rolling bearing. The guide positioning sleeve (4) is interference-fitted with the outer ring of the rolling bearing, and the guide positioning sleeve shaft (5) is interference-fitted with the inner ring of the bearing structure.

7. The pipe beveling tool according to claim 1, characterized in that: The outer diameter of the guide post cutter head (6) is 1-2 mm smaller than the outer diameter of the guide positioning sleeve (4).

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