Machining tool

Abstract

The invention provides a machining tool and belongs to the technical field of mechanical equipment manufacturing, the machining tool is provided with a tool bar, a tool bit and a positioning support, a rotating component is arranged in the middle of the positioning support, the tool bar penetrates through the rotating component and a mounting surface, a first limiting component is arranged in the middle of the tool bar, and the tool bar moves downwards to enable the limiting component to abut against the rotating component; the cutter handle and the cutter head cannot continue to advance and automatically idle, the precision of machining depth can be guaranteed, and it is guaranteed that the size is uniform and consistent after multiple times of machining.

Description

Technical Field

[0001] This invention belongs to the field of mechanical equipment manufacturing technology, and more specifically, relates to a machining tool. Background Technology

[0002] Refrigeration equipment is widely used in industries such as petrochemicals and pharmaceuticals. A crucial aspect of heat exchanger manufacturing is ensuring the quality of the connection between the heat exchanger tubes and the tube sheet to prevent leakage at the tube ends. Leaks at the tube ends can cause mixing of the tube and shell-side media, affecting product quality and potentially creating hazardous situations. Especially in the petrochemical industry, due to harsh operating conditions, heat exchangers often require a combination of strength welding and expansion joints. Furthermore, because the media can severely corrode the welds, the heat exchanger tubes and tube sheet may require expansion joints. Therefore, the machining of expansion grooves in the tube sheet holes is of paramount importance to ensure the quality of the expansion joint.

[0003] Traditional cutting tools lack positioning capabilities, making it impossible to guarantee the depth dimensions of the hundreds or thousands of expansion grooves on each tube sheet, thus affecting the quality of subsequent expansion joints. Summary of the Invention

[0004] The purpose of this invention is to provide a machining tool that solves the problem of inaccurate machining caused by the lack of positioning function in traditional tools.

[0005] To achieve the above objectives, the present invention provides a machining tool, comprising:

[0006] The tool holder, with its upper part used to connect to the machine tool;

[0007] The cutting head is installed at the lower part of the cutting shank;

[0008] The positioning bracket has an annular mounting surface fixed in the middle. A rotating component is mounted on the upper surface of the mounting surface. The tool bar passes through the rotating component and the mounting surface in sequence, and the tool bar is axially movable.

[0009] The first limiting component is installed in the middle of the tool bar and positioned above the rotating component. When the tool bar moves downward, the first limiting component will abut against the rotating component, thereby limiting the tool bar.

[0010] Furthermore, the cutter head is detachably connected to the cutter shank.

[0011] Furthermore, the lower part of the tool holder is provided with a square through hole in the radial direction and a threaded hole in the axial direction. The square through hole and the threaded hole are T-shaped. The square through hole is used to accommodate the tool head, and a screw for locking the tool head is provided in the threaded hole.

[0012] Furthermore, the first limiting component can adjust the axial position.

[0013] Furthermore, the first limiting component includes:

[0014] An adjusting nut is threadedly connected to the threaded section in the middle of the tool holder.

[0015] A locking component is used to lock the adjusting nut.

[0016] Furthermore, the locking component is a fastening nut, which is threadedly connected to the threaded section in the middle of the tool holder.

[0017] Furthermore, the fastening nut is positioned above the adjusting nut.

[0018] Furthermore, the pitch of the threaded segment is a set pitch, the surface of the adjusting nut is provided with a first scale line, and the surface of the tool bar is provided with a second scale line. The first scale line and the second scale line are used to read the position of the first limiting component.

[0019] Furthermore, the set pitch is 1mm.

[0020] Furthermore, a second limiting component is provided at the lower part of the cutter bar, which is located between the cutter head and the lower surface of the mounting surface to prevent the positioning bracket from falling downward.

[0021] The beneficial effects of the present invention are as follows: a machining tool is provided, which has a tool holder, a tool head and a positioning bracket. A rotating component is provided in the middle of the positioning bracket. The tool holder passes through the rotating component and the mounting surface. A first limiting component is provided in the middle of the tool holder. When the tool holder moves downward, the limiting component will abut against the rotating component. The tool holder and the tool head cannot continue to move forward and will automatically rotate, which can ensure the accuracy of the machining depth and ensure that the dimensions are uniform and consistent in multiple machining operations.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0024] Figure 1 A schematic structural diagram of a machining tool according to an embodiment of the present invention is shown.

[0025] Explanation of reference numerals in the attached figures:

[0026] Tool holder 1; Threaded section 12;

[0027] Blade 2;

[0028] Positioning bracket 3; Rotating component 31;

[0029] First limiting component 4; Adjusting nut 41; Fastening nut 42;

[0030] Screw 5;

[0031] Second limiting component 6;

[0032] Tube sheet 7; Tube sheet hole 71. Detailed Implementation

[0033] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0034] like Figure 1 As shown, this embodiment provides a machining tool for grooving the tube sheet hole 71 of a heat exchanger, including:

[0035] Tool holder 1, the upper part is used to connect to the machine tool;

[0036] Cutter head 2 is installed at the lower part of cutter shank 1;

[0037] The positioning bracket 3 has an annular mounting surface fixed in the middle. A rotating component 31 is mounted on the upper surface of the mounting surface. The tool bar 1 passes through the rotating component 31 and the mounting surface in sequence, and the tool bar 1 can move axially.

[0038] The first limiting component 4 is installed in the middle of the tool bar 1 and positioned above the rotating component 31. When the tool bar 1 moves downward, the first limiting component (4) will come into contact with the rotating component 31, thereby limiting the tool bar 1.

[0039] In practical implementation, based on actual needs and the processing dimensions of the expansion groove form and position, a suitable cutting head 2 is selected. The position of the first limiting component 4 is set according to the processing dimensions of the expansion groove. The cutting shank 1 passes through the rotating component 31, aligning the cutting head 2 with the tube sheet hole 71. The bottom of the positioning bracket 3 is tightly fitted with the tube sheet 7. When the cutting head 2 advances to the required size, the first limiting component 4 abuts against the rotating component 31, preventing the cutting shank and cutting head 2 from advancing further and causing them to automatically rotate freely. This effectively ensures that the expansion groove size of the tube sheet hole 71 meets the design requirements, thereby ensuring that the expansion groove size on each tube sheet 7 is uniform and consistent, creating a good foundation for ensuring the quality of subsequent expansion joints. In this embodiment, the rotating component 31 is a thrust bearing.

[0040] Furthermore, the positioning bracket 3 ensures that the tool holder 1 does not come into contact with the inner wall of the tube sheet hole 71, preventing scratches on the inner wall of the tube sheet hole 71. The positioning bracket 3 also stabilizes the tool holder 1, preventing it from moving up and down, thereby ensuring machining quality.

[0041] Optionally, the cutter head 2 and the cutter shank 1 can be detachably connected.

[0042] Preferably, the lower part of the tool holder 1 is provided with a square through hole in the radial direction and a threaded hole in the axial direction. The square through hole and the threaded hole are T-shaped. The square through hole is used to accommodate the tool head 2, and a screw 5 for locking the tool head 2 is provided in the threaded hole.

[0043] Specifically, the form of the cutting head 2 can be changed according to the actual processing requirements. The cutting head 2 can also be replaced after wear and can be reused, avoiding the phenomenon of one or even multiple uses of the cutting tool, thus reducing the cost of the cutting tool.

[0044] Optionally, the first limiting component 4 can adjust the axial position.

[0045] Specifically, the first limiting component 4 is adjustable, which can be used to process tube sheet holes 71 of different sizes, and can also be adjusted according to processing errors to reduce processing errors.

[0046] Preferably, the first limiting component 4 includes:

[0047] Adjusting nut 41 is threadedly connected to the threaded section 12 in the middle of the tool holder 1.

[0048] Locking component for locking adjusting nut 41.

[0049] Specifically, the axial position of the first limiting component 4 can be adjusted by turning the adjusting nut 41, thereby adjusting the machining depth.

[0050] Preferably, the locking component is a fastening nut 42, which is threadedly connected to the threaded section 12 in the middle of the tool holder 1.

[0051] Preferably, the fastening nut 42 is positioned above the adjusting nut 41.

[0052] Optionally, the pitch of the threaded section 12 is a set pitch, the surface of the adjusting nut 41 is provided with a first scale line, and the surface of the tool holder 1 is provided with a second scale line. The first scale line and the second scale line are used to read the position of the first limiting component 4.

[0053] Specifically, the number of rotations and angle of the adjusting nut 41 can be read through the first and second scale lines, and the position of the first limiting component 4 can be obtained by setting the pitch, thereby improving the adjustment accuracy.

[0054] Preferably, the pitch is set to 1 mm.

[0055] Optionally, a second limiting component 6 is provided at the lower part of the tool holder 1. The second limiting component 6 is located between the tool head 2 and the lower surface of the mounting surface to prevent the positioning bracket 3 from falling downward.

[0056] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A machining tool, characterized in that, include: Tool holder (1), the upper part is used to connect to the machine tool; The cutter head (2) is installed at the lower part of the cutter bar (1); The positioning bracket (3) has an annular mounting surface fixed in the middle. A rotating component (31) capable of withstanding axial pressure is mounted on the upper surface of the mounting surface. The tool bar (1) passes through the rotating component (31) and the mounting surface in sequence, and the tool bar (1) can move axially. The lower end of the positioning bracket is used to abut against the workpiece. The first limiting component (4) is adjustablely installed in the middle of the tool bar (1) and positioned above the rotating component (31). When the tool bar (1) moves downward, the first limiting component (4) abuts against the rotating component (31), thereby limiting the tool bar (1).

2. The machining tool according to claim 1, characterized in that, The cutter head (2) is detachably connected to the cutter bar (1).

3. The machining tool according to claim 2, characterized in that, The lower part of the tool holder (1) is provided with a square through hole in the radial direction, and the lower part of the tool holder (1) is provided with a threaded hole in the axial direction. The square through hole and the threaded hole are T-shaped. The square through hole is used to accommodate the tool head (2). The threaded hole is provided with a screw (5) for locking the tool head (2).

4. The machining tool according to claim 1, characterized in that, The first limiting component (4) can adjust the axial position.

5. The machining tool according to claim 4, characterized in that, The first limiting component (4) includes: Adjusting nut (41), the adjusting nut (41) is threadedly connected to the threaded section (12) in the middle of the tool bar (1); A locking component is used to lock the adjusting nut (41).

6. The machining tool according to claim 5, characterized in that, The locking component is a fastening nut (42), which is threadedly connected to the threaded section (12) in the middle of the tool bar (1).

7. The machining tool according to claim 6, characterized in that, The fastening nut (42) is positioned above the adjusting nut (41).

8. The machining tool according to claim 5, characterized in that, The pitch of the threaded section (12) is a set pitch. The surface of the adjusting nut (41) is provided with a first scale line, and the surface of the tool bar (1) is provided with a second scale line. The first scale line and the second scale line are used to read the position of the first limiting component (4).

9. The machining tool according to claim 8, characterized in that, The set pitch is 1mm.

10. The machining tool according to claim 1, characterized in that, The lower part of the cutter bar (1) is provided with a second limiting component (6), which is located between the cutter head (2) and the lower surface of the mounting surface to prevent the positioning bracket (3) from falling downward.

Images