Fine boring cutter for machining cam hole

Abstract

The utility model relates to the technical field of cam hole machining, and discloses a fine boring cutter for cam hole machining, which comprises a shell, the inner wall of the shell is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly sleeved with a connecting block, the bottom of the connecting block is inserted with a boring cutter body, and the shell is provided with an adjusting mechanism; the adjusting mechanism comprises an arc-shaped hole, a rack and a sliding rod, the arc-shaped hole is formed in the front face of the shell, the rack is fixedly connected to the bottom of the inner wall of the arc-shaped hole, the sliding rod is fixedly connected to the front face of the connecting block, and the front end of the sliding rod penetrates through the arc-shaped hole and extends forwards. According to the fine boring cutter for machining the cam hole, the angle of the boring cutter body can be conveniently adjusted, an original control mode is changed, springback of the fine boring cutter in use is avoided, the use limitation of the fine boring cutter is eliminated, and normal use of the fine boring cutter is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cam hole processing, in particular to a precision boring tool for cam hole processing. Background Art

[0002] The engine block is one of the most important parts of the diesel engine, and its processing accuracy directly affects the reliability of the diesel engine. The processing of the engine block camshaft hole is the most difficult part of engine block processing. Usually, the engine block camshaft hole is firstly rough-machined by a special machine tool using a separate boring tool or reaming tool to the cam blank hole formed by casting, and then the subsequent semi-finishing and finishing are carried out.

[0003] The existing authorization announcement number is "CN215941536U". A precision boring tool pushes the third support plate to move the right side of the second support plate downward, and the first support plate rotates accordingly, thereby changing the angle between the bottom end of the machining head and the working surface, achieving work with different needs, and is worthy of vigorous promotion.

[0004] However, when the fine boring tool is in use, after the angle is adjusted, it is supported by a spring. The spring itself has elastic force. When the tool head of the fine boring tool touches the workpiece, it will squeeze the spring, and the tool head will retract. Subsequently, due to the characteristics of the spring, the fine boring tool will rebound, causing the fine boring tool to reciprocate and extend, resulting in limitations in the use of the fine boring tool and affecting the normal use of the fine boring tool. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a fine boring tool for cam hole processing, which has the advantages of conveniently adjusting the angle of the boring tool body, changing the original control form, avoiding the rebound of the fine boring tool during use, eliminating the limitation of the use of the fine boring tool, and ensuring the normal use of the fine boring tool.

[0007] (II) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: a fine boring tool for cam hole processing, comprising a shell, the bottom of the shell is open, the inner wall of the shell is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly sleeved with a connecting block, the bottom of the connecting block is plugged with a boring tool body, and the shell is provided with an adjustment mechanism;

[0009] The adjusting mechanism comprises: an arc-shaped hole, a toothed rack, and a sliding rod, wherein the arc-shaped hole is opened on the front side of the shell, the toothed rack is fixedly connected to the bottom of the inner wall of the arc-shaped hole, the sliding rod is fixedly connected to the front side of the connecting block, and the front end of the sliding rod passes through the arc-shaped hole and extends forward, a toothed block is movably sleeved on the outer wall of the sliding rod, a spring is fixedly connected to the back side of the toothed block, and the rear end of the spring is fixedly connected to the front side of the connecting block, and two protruding rods are fixedly connected to the front side of the toothed block, and the toothed block is pushed to slide along the outer wall of the sliding rod and compress the spring by pressing the protruding rod, so that the toothed block The block is separated from the rack, and then the convex rod is moved to make it move in the inner cavity of the arc hole, so that the convex rod drives the tooth block to move, and the tooth block drives the slide bar to move, so that the slide bar drives the connecting block and the rotating shaft to rotate, and the connecting block drives the boring tool body to rotate. After loosening the convex rod, the tooth block is pushed to reset and engage with the rack through the elastic force of the spring itself, thereby fixing the slide bar, the connecting block and the boring tool body, thereby facilitating the adjustment of the angle of the boring tool body, changing the original control form, avoiding the rebound of the fine boring tool during use, eliminating the use limitations of the fine boring tool, and ensuring the normal use of the fine boring tool.

[0010] Preferably, the outer wall of the tooth block fits with the top of the inner wall of the arc-shaped hole, and the tooth block meshes with the rack.

[0011] Preferably, the right side of the connecting block is threadedly connected with a hexagon socket bolt, and the left end of the hexagon socket bolt passes through the connecting block and is threadedly connected to the boring tool body. The hexagon socket bolt is disengaged from the boring tool body by rotating it, thereby releasing the fixation of the boring tool body, thereby separating the boring tool body from the connecting block, thereby facilitating the disassembly and replacement of the boring tool body.

[0012] Preferably, a threaded hole is formed on the outer wall of the boring tool body, and the left end of the hexagon socket bolt is threadedly connected in the threaded hole.

[0013] Preferably, a mounting hole is provided at the bottom of the connecting block, the boring tool body is inserted into the mounting hole, and a positioning block is fixedly connected to the outer wall of the boring tool body. The positioning block can be used to quickly position the boring tool body, thereby facilitating rapid installation of the boring tool body.

[0014] Preferably, a positioning hole is formed on the inner wall of the mounting hole, and the positioning block is clamped in the positioning hole.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a fine boring tool for cam hole machining, which has the following beneficial effects:

[0017] 1. A precision boring tool for cam hole processing, by pressing a cam to push the tooth block to slide along the outer wall of a slide bar and compressing a spring, thereby disengaging the tooth block from a rack, and then moving the cam to make it move in the inner cavity of the arc hole, so that the cam drives the tooth block to move, and the tooth block drives the slide bar to move, so that the slide bar drives the connecting block and the rotating shaft to rotate, and the connecting block drives the boring tool body to rotate. After releasing the cam, the spring's own elastic force pushes the tooth block to reset and engage with the rack, thereby fixing the slide bar, the connecting block, and the boring tool body, thereby facilitating the adjustment of the angle of the boring tool body, changing the original control form, avoiding the rebound of the precision boring tool during use, eliminating the use limitations of the precision boring tool, and ensuring the normal use of the precision boring tool.

[0018] 2. The fine boring tool for machining cam holes can release the fixation of the boring tool body by rotating the hexagon socket bolt to separate it from the boring tool body, so that the boring tool body is separated from the connecting block, which is convenient for disassembly and replacement of the boring tool body. The positioning block can quickly position the boring tool body, which is convenient for rapid installation of the boring tool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 It is a left side cross-sectional view of the utility model;

[0022] Figure 3 It is a front cross-sectional view of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the boring cutter body of the utility model.

[0024] In the figure: 1. housing; 2. rotating shaft; 3. connecting block; 4. boring tool body; 5. adjusting mechanism; 501. arc hole; 502. rack; 503. slide bar; 504. tooth block; 505. spring; 506. protruding rod; 6. hexagon socket bolt; 7. positioning block. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1

[0027] like Figure 1-4As shown, the utility model provides a fine boring tool for cam hole processing, comprising a shell 1, the bottom of the shell 1 is open, the inner wall of the shell 1 is rotatably connected with a rotating shaft 2, the outer wall of the rotating shaft 2 is fixedly sleeved with a connecting block 3, the bottom of the connecting block 3 is plugged with a boring tool body 4, and the shell 1 is provided with an adjusting mechanism 5; the adjusting mechanism 5 comprises: an arc hole 501, a rack 502, and a slide bar 503, the arc hole 501 is opened on the front side of the shell 1, the rack 502 is fixedly connected to the bottom of the inner wall of the arc hole 501, the slide bar 503 is fixedly connected to the front side of the connecting block 3, and the front end of the slide bar 503 passes through the arc hole 501 and extends forward, the outer wall of the slide bar 503 is movably sleeved with a tooth block 504, the outer wall of the tooth block 504 is fitted with the top of the inner wall of the arc hole 501, the tooth block 504 is meshed with the rack 502, the back side of the tooth block 504 is fixedly connected with a spring 505, and the rear end of the spring 505 is engaged with the connecting block 3 The front side is fixedly connected, and the front side of the tooth block 504 is fixedly connected with two protruding rods 506. By pressing the protruding rod 506, the tooth block 504 is pushed to slide along the outer wall of the slide bar 503 and compress the spring 505, so that the tooth block 504 is separated from the rack 502, and then the protruding rod 506 is toggled to move in the inner cavity of the arc hole 501, so that the protruding rod 506 drives the tooth block 504 to move, and the tooth block 504 drives the slide bar 503 to move, so that the slide bar 503 drives the connecting block 3 and the rotating shaft 2 to rotate, and the connecting block 3 drives the boring tool body 4 to rotate. After the protruding rod 506 is released, the tooth block 504 is pushed to reset and engage with the rack 502 by the elastic force of the spring 505 itself, so that the slide bar 503, the connecting block 3, and the boring tool body 4 are fixed, so as to facilitate the adjustment of the angle of the boring tool body 4, change the original control form, avoid the rebound of the fine boring tool during use, eliminate the limitation of the use of the fine boring tool, and ensure the normal use of the fine boring tool.

[0028] The tooth block 504 is disengaged from the rack 502 by pressing the protruding rod 506, and the protruding rod 506 is then moved to move it in the inner cavity of the arc hole 501, so that the protruding rod 506 drives the tooth block 504 to move, and the tooth block 504 drives the sliding rod 503 to move, so that the sliding rod 503 drives the connecting block 3 and the rotating shaft 2 to rotate, and the connecting block 3 drives the boring tool body 4 to rotate. After the protruding rod 506 is released, the tooth block 504 is reset and meshed with the rack 502 by the elastic force of the spring 505 itself, so that the sliding rod 503, the connecting block 3, and the boring tool body 4 are fixed, thereby facilitating the adjustment of the angle of the boring tool body 4, changing the original control form, avoiding the rebound of the fine boring tool during use, eliminating the limitations of the use of the fine boring tool, and ensuring the normal use of the fine boring tool.

[0029] Example 2

[0030] like Figure 1-4As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the right side of the connecting block 3 is threadedly connected with a hexagon socket bolt 6, and the left end of the hexagon socket bolt 6 passes through the connecting block 3 and is threadedly connected to the boring tool body 4, and the outer wall of the boring tool body 4 is provided with a threaded hole, and the left end of the hexagon socket bolt 6 is threadedly connected to the threaded hole, and the hexagon socket bolt 6 is rotated to disengage from the boring tool body 4, thereby releasing the fixation of the boring tool body 4, so that the boring tool body 4 is separated from the connecting block 3, which is convenient for disassembly and replacement of the boring tool body 4, and a mounting hole is provided at the bottom of the connecting block 3, and the boring tool body 4 is inserted into the mounting hole, and the outer wall of the boring tool body 4 is fixedly connected with a positioning block 7, and the inner wall of the mounting hole is provided with a positioning hole, and the positioning block 7 is clamped in the positioning hole. The boring tool body 4 can be quickly positioned by the provided positioning block 7, which is convenient for rapid installation of the boring tool body 4.

[0031] In this embodiment, the hexagon socket bolt 6 is rotated to disengage it from the boring tool body 4, thereby releasing the fixation of the boring tool body 4, so that the boring tool body 4 is separated from the connecting block 3, which is convenient for the disassembly and replacement of the boring tool body 4. The positioning block 7 is provided to quickly position the boring tool body 4, which is convenient for the rapid installation of the boring tool body 4.

[0032] The following is a detailed description of the working principle of this kind of fine boring tool for cam hole processing.

[0033] like Figure 1-4 As shown, when in use, the protruding rod 506 is pressed to push the tooth block 504 to slide along the outer wall of the slide bar 503 and compress the spring 505, so that the tooth block 504 is separated from the rack 502, and then the protruding rod 506 is moved to move in the inner cavity of the arc hole 501, so that the protruding rod 506 drives the tooth block 504 to move, and the tooth block 504 drives the slide bar 503 to move, so that the slide bar 503 drives the connecting block 3 and the rotating shaft 2 to rotate, and the connecting block 3 drives the boring tool body 4 to rotate. After the protruding rod 506 is released, the spring 505 is released. 05 The tooth block 504 is reset and meshed with the rack 502 by its own elastic force, thereby fixing the slide bar 503, the connecting block 3 and the boring tool body 4, so as to facilitate the adjustment of the angle of the boring tool body 4. The hexagon socket bolt 6 is rotated to disengage it from the boring tool body 4, thereby releasing the fixation of the boring tool body 4, so that the boring tool body 4 is separated from the connecting block 3, which is convenient for the disassembly and replacement of the boring tool body 4. The positioning block 7 is provided to quickly position the boring tool body 4, which is convenient for the quick installation of the boring tool body 4.

Claims

1. A fine boring tool for cam hole machining, comprising a housing (1), characterized in that: The inner wall of the housing (1) is rotatably connected to a rotating shaft (2), the outer wall of the rotating shaft (2) is fixedly sleeved with a connecting block (3), the bottom of the connecting block (3) is plugged with a boring tool body (4), and the housing (1) is provided with an adjusting mechanism (5); The adjusting mechanism (5) comprises: an arc-shaped hole (501), a toothed rack (502), and a sliding rod (503); the arc-shaped hole (501) is opened on the front side of the housing (1); the toothed rack (502) is fixedly connected to the bottom of the inner wall of the arc-shaped hole (501); the sliding rod (503) is fixedly connected to the front side of the connecting block (3); the front end of the sliding rod (503) passes through the arc-shaped hole (501) and extends forward; the outer wall of the sliding rod (503) is movably sleeved with a toothed block (504); the back side of the toothed block (504) is fixedly connected to a spring (505); the rear end of the spring (505) is fixedly connected to the front side of the connecting block (3); the front side of the toothed block (504) is fixedly connected to two protruding rods (506).

2. A fine boring tool for cam hole machining according to claim 1, characterized in that: The outer wall of the tooth block (504) fits with the top of the inner wall of the arc-shaped hole (501), and the tooth block (504) meshes with the rack (502).

3. A fine boring tool for cam hole machining according to claim 1, characterized in that: The right side of the connecting block (3) is threadedly connected with a hexagon socket bolt (6), and the left end of the hexagon socket bolt (6) passes through the connecting block (3) and is threadedly connected to the boring tool body (4).

4. A fine boring tool for cam hole machining according to claim 3, characterized in that: A threaded hole is provided on the outer wall of the boring tool body (4), and the left end of the hexagon socket bolt (6) is threadedly connected in the threaded hole.

5. A fine boring tool for cam hole machining according to claim 1, characterized in that: The bottom of the connecting block (3) is provided with a mounting hole, the boring tool body (4) is inserted into the mounting hole, and the outer wall of the boring tool body (4) is fixedly connected with a positioning block (7).

6. A fine boring tool for machining a cam hole according to claim 5, characterized in that: The inner wall of the mounting hole is provided with a positioning hole, and the positioning block (7) is clamped in the positioning hole.

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