Reverse boring cutter mechanism capable of quickly adjusting angle

Abstract

The utility model discloses a reverse boring cutter mechanism capable of quickly adjusting angle, which relates to the technical field of turning, and comprises a cutter bar, a reverse boring cutter body and a driving mechanism, the lower end of the cutter bar is upwards provided with a cavity, the right side of the lower end of the cutter bar is provided with an avoiding groove communicated with the cavity, a rotating rod is rotatably mounted in the cavity, a worm gear is sleeved on the rotating rod, and the worm gear is sleeved on the reverse boring cutter body. A worm in transmission connection with the driving mechanism is rotationally installed on one side of the worm gear and is in meshing transmission with the worm gear. According to the reverse boring cutter mechanism capable of rapidly adjusting the angle, the worm gear, the worm, the first connecting rod and the second connecting rod are arranged in a matched mode, the angles of the reverse boring cutter body and the cutter bar are continuously changed through rotation of the worm gear, the horizontal distance between a blade and the cutter bar is continuously increased, and therefore the blade is driven to continuously turn an inner hole of a part; not only is the machining range of the reverse boring cutter increased, but also the machining efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of turning processing, in particular to a reverse boring tool mechanism capable of quickly adjusting an angle. Background Art

[0002] Lathes are commonly used equipment in mechanical processing. Back boring tools are often used on lathes to process stepped hole parts whose outer holes are smaller than the inner holes. However, when the inner hole on one side is much larger than the outer hole and the hole is deeper, conventional back boring tools cannot be used and processing can only be performed from the other side, affecting processing efficiency.

[0003] Therefore, it is necessary to propose a counter-boring tool mechanism that can quickly adjust the angle to solve the above problems. Utility Model Content

[0004] Technical problem to be solved: The purpose of the utility model is to provide a counter-boring tool mechanism with quickly adjustable angles, so as to solve the problem raised in the above-mentioned background technology that when the inner hole on one side is much larger than the outer hole and the hole is deeper, the existing counter-boring tool cannot be used and can only be processed from the other side, affecting the processing efficiency.

[0005] Technical solution: To achieve the above purpose, the utility model is implemented through the following technical solutions: a counter-boring tool mechanism capable of quickly adjusting the angle, comprising a tool rod, a counter-boring tool body and a driving mechanism, wherein a cavity is upwardly opened at the lower end of the tool rod, and an avoidance groove connected to the cavity is opened on the right side of the lower end of the tool rod, a rotating rod is rotatably installed in the cavity, a worm wheel is mounted on the rotating rod, a worm connected to the driving mechanism is rotatably installed on one side of the worm wheel, and the worm and the worm wheel are meshed for transmission; arc-shaped limit grooves and arc-shaped slide grooves are spaced apart from top to bottom on the tool rod, the limit grooves are coaxially arranged with the rotating rod, and the opening of the arc-shaped slide groove faces A limit rod is slidably installed in the limit groove, and a slide rod is slidably installed in the slide groove; a first connecting rod is provided between the limit rod and the slide rod, and a second connecting rod is provided between the limit rod and the rotating rod, and the two ends of the first connecting rod are respectively rotatably mounted on the limit rod and the slide rod, and the two ends of the second connecting rod are respectively mounted on the limit rod and the rotating rod; a rotating shaft is rotatably installed in the cavity at the lower end of the tool rod, the rotating shaft is coaxially arranged with the arc-shaped slide groove, and the upper end of the counter-boring tool body is rotatably mounted on the slide rod, the middle part of the counter-boring tool body is rotatably mounted on the rotating shaft, and the lower end of the counter-boring tool body extends out of the cavity and is fixedly mounted with a blade.

[0006] Preferably, the driving mechanism is a Z-shaped crank handle, the worm is horizontally arranged above the worm wheel, and one end of the worm passes through the knife rod and is fixedly connected to the crank handle.

[0007] Preferably, the slide groove and the limit groove are both located between the rotating rod and the rotating shaft, the angle between the back boring tool body and the tool rod is a, and 90°≤a≤180°.

[0008] Preferably, the lower end of the tool rod is provided with a through hole coaxial with the arc-shaped slide groove, the middle and upper ends of the counter-boring tool body are provided with through holes, the through hole and the slide groove are matched with bolts, and the upper end and middle part of the counter-boring tool body are rotatably mounted on the screw rods of the two bolts respectively.

[0009] Preferably, an electric motor connected to the control of a numerically controlled machine tool is fixedly mounted in the cavity, a driving gear is mounted on the output shaft of the electric motor, and a driven gear meshing with the driving gear is mounted on the worm.

[0010] The invention provides a reverse boring tool mechanism with rapidly adjustable angle, and the reverse boring tool mechanism with rapidly adjustable angle has unique structure and is easy to use. When the inner hole on one side is much larger than the outer hole and the hole is deeper, the reverse boring tool, when turning such a hole, first moves the tool rod to make the reverse boring tool body extend into the inner hole of the part. After the tool rod is moved to the position, the crank is turned, and the crank drives the worm to rotate. The worm drives the worm wheel to rotate through meshing transmission. After the worm wheel rotates, the reverse boring tool body is driven to rotate along the rotating axis through the second connecting rod and the first connecting rod, thereby changing the angle between the reverse boring tool body and the tool rod. Through the coordinated arrangement of the worm wheel, the worm, the first connecting rod and the second connecting rod, the angle between the reverse boring tool body and the tool rod is continuously changed by the rotation of the worm wheel, so that the horizontal distance between the blade and the tool rod is continuously increased, thereby driving the blade to continuously turn the inner hole of the part, which not only increases the processing range of the reverse boring tool, but also effectively improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional front view schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a cross-sectional schematic diagram of the structure of the utility model when it is working;

[0013] Figure 3 It is a cross-sectional schematic diagram of the initial state of the structure of the utility model.

[0014] In the figure: 1. tool bar; 2. back boring tool body; 3. blade; 4. rotating shaft; 5. slide groove; 6. slide rod; 7. limit groove; 8. first connecting rod; 9. limit rod; 10. rotating rod; 11. second connecting rod; 12. worm gear; 13. worm; 14. crank handle. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Embodiment 1: This embodiment 1 provides a reverse boring tool mechanism that can quickly adjust the angle, which is directly improved on the existing reverse boring tool and has a unique structure. Please refer to Figure 1-3As shown, it includes a tool rod 1, a counter boring tool body 2 and a driving mechanism. In the initial state, the tool rod 1 and the counter boring tool body 2 are both arranged vertically, and are characterized in that: a cavity is opened upward at the lower end of the tool rod 1, and an avoidance groove connected to the cavity is opened on the right side of the lower end of the tool rod 1. A rotating rod 10 is rotatably installed in the cavity, and a worm wheel 12 is mounted on the rotating rod 10. A worm 13 connected to the driving mechanism is rotatably installed on one side of the worm wheel 12, and the worm 13 is meshed with the worm wheel 12 for transmission; there are many options for the driving mechanism, for example: the driving mechanism is a Z-shaped crank handle 14, the worm 13 is horizontally arranged above the worm wheel 12, and one end of the worm 13 passes through the tool rod 1 and is fixedly connected to the crank handle 14.

[0017] The tool rod 1 is provided with an arc-shaped limit groove 7 and an arc-shaped slide groove 5 from top to bottom. The limit groove 7 is coaxially arranged with the rotating rod 10, and the opening of the arc-shaped slide groove 5 faces the avoidance groove. The limit rod 9 is slidably installed in the limit groove 7, and the slide rod 6 is slidably installed in the slide groove 5. By setting the limit groove 7 and the slide groove 5, the vibration transmitted to the worm gear 12 by the back boring tool body 2 can be effectively weakened, the meshing teeth of the worm gear 12 and the worm 13 can be prevented from cracking, and the self-locking characteristics of the worm gear 12 and the worm 13 can be maintained. A first connecting rod 8 is provided between the limit rod 9 and the slide rod 6, and a second connecting rod 11 is provided between the limit rod 9 and the rotating rod 10, and the two ends of the first connecting rod 8 are respectively rotatably mounted on the limit rod 9 and the slide rod 6, and the two ends of the second connecting rod 11 are respectively mounted on the limit rod 9 and the rotating rod 10.

[0018] A rotating shaft 4 is rotatably installed in the cavity at the lower end of the tool rod 1, and the rotating shaft 4 is coaxially arranged with the arc-shaped slide groove 5, and the upper end of the counter-boring tool body 2 is rotatably mounted on the slide rod 6, and the middle part of the counter-boring tool body 2 is rotatably mounted on the rotating shaft 4, and the lower end of the counter-boring tool body 2 extends out of the cavity and is fixedly installed with a blade 3; the slide groove 5 and the limit groove 7 are both located between the rotating rod 10 and the rotating shaft 4, and the angle between the counter-boring tool body 2 and the tool rod 1 is a, and 90°≤a≤180°; there are many ways to fix the blade 3 on the counter-boring tool body 2, for example: screw holes are opened on the blade 3 and the counter-boring tool body 2, and the blade 3 and the counter-boring tool body 2 are fixedly connected by screws.

[0019] When we use the counter-boring tool, we first move the tool rod 1 to make the counter-boring tool body 2 extend into the inner hole of the part. After the tool rod 1 moves to the position, turn the crank 14, and the crank 14 drives the worm 13 to rotate. The worm 13 drives the worm wheel 12 to rotate through the meshing transmission. The rotation of the worm wheel 12 drives the second connecting rod 11 to rotate, so that the limit rod 9 slides in the limit groove 7. When the limit rod 9 moves in the limit groove 7, since the two ends of the first connecting rod 8 are respectively rotated and mounted on the limit rod 9 and the sliding rod 6, when the limit rod 9 moves, the sliding rod 6 will slide along the sliding groove 5 under the action of the first connecting rod 8, thereby driving the counter-boring tool body 2 to rotate along the rotating shaft 4, so that the angle between the counter-boring tool body 2 and the tool rod 1 changes, and then the horizontal distance between the blade 3 and the tool rod 1 increases, driving the blade 3 to turn the inner hole of the part.

[0020] Embodiment 2: Embodiment 2 differs from Embodiment 1 in that a through hole coaxial with the arc-shaped slide groove 5 is provided at the lower end of the tool rod 1, through holes are provided at the middle and upper ends of the counter-boring tool body 2, bolts are matched in the through hole and the slide groove 5, and the upper end and the middle part of the counter-boring tool body 2 are respectively rotatably mounted on the screw rods of the two bolts; by using two bolts to replace the rotating shaft 4 and the slide rod 6 respectively, the counter-boring tool body 2 can be replaced conveniently.

[0021] Example 3: The difference between Example 3 and Example 1 is that an electric motor connected to the control of a CNC machine tool is fixedly installed in the cavity, a driving gear is mounted on the output shaft of the motor, and a driven gear meshing with the driving gear is mounted on the worm 13; the back boring cutter body is driven by the motor to move, thereby further improving the processing efficiency.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A back boring tool mechanism capable of quickly adjusting an angle, comprising a tool bar (1), a back boring tool body (2) and a driving mechanism, characterized in that: The lower end of the knife rod (1) is provided with a cavity upwardly, and the right side of the lower end of the knife rod (1) is provided with an avoidance groove connected with the cavity, a rotating rod (10) is rotatably installed in the cavity, a worm wheel (12) is mounted on the rotating rod (10), a worm (13) connected with the driving mechanism is rotatably installed on one side of the worm wheel (12), and the worm (13) is meshed with the worm wheel (12) for transmission; the knife rod (1) is provided with an arc-shaped limit groove (7) and an arc-shaped slide groove (5) spaced from top to bottom, the limit groove (7) and the rotating rod (10) are coaxially arranged, the opening of the arc-shaped slide groove (5) faces the avoidance groove, a limit rod (9) is slidably installed in the limit groove (7), and a slide rod (6) is slidably installed in the slide groove (5); the limit groove (7) is provided with a limit rod (9) and a slide rod (6) is slidably installed in the slide groove (5); A first connecting rod (8) is provided between the rod (9) and the slide rod (6), and a second connecting rod (11) is provided between the limit rod (9) and the rotating rod (10), and the two ends of the first connecting rod (8) are respectively rotatably mounted on the limit rod (9) and the slide rod (6), and the two ends of the second connecting rod (11) are respectively mounted on the limit rod (9) and the rotating rod (10); a rotating shaft (4) is rotatably mounted in the cavity at the lower end of the tool rod (1), and the rotating shaft (4) is coaxially arranged with the arc-shaped slide groove (5), and the upper end of the counter-boring tool body (2) is rotatably mounted on the slide rod (6), and the middle part of the counter-boring tool body (2) is rotatably mounted on the rotating shaft (4), and the lower end of the counter-boring tool body (2) extends out of the cavity and is fixedly mounted with a blade (3).

2. A reverse boring tool mechanism capable of quickly adjusting an angle according to claim 1, characterized in that: The driving mechanism is a Z-shaped crank handle (14); the worm (13) is horizontally arranged above the worm wheel (12); one end of the worm (13) passes through the knife rod (1) and is fixedly connected to the crank handle (14).

3. The reverse boring tool mechanism capable of quickly adjusting the angle according to claim 1, characterized in that: The sliding groove (5) and the limiting groove (7) are both located between the rotating rod (10) and the rotating shaft (4); the angle between the back boring tool body (2) and the tool rod (1) is a, and 90°≤a≤180°.

4. The reverse boring tool mechanism capable of quickly adjusting the angle according to claim 1, characterized in that: The lower end of the tool rod (1) is provided with a through hole coaxial with the arc-shaped slide groove (5), the middle and upper ends of the counter-boring tool body (2) are provided with through holes, and bolts are matched in the through hole and the slide groove (5), and the upper end and the middle part of the counter-boring tool body (2) are rotatably mounted on the screw rods of the two bolts respectively.

5. The reverse boring tool mechanism capable of quickly adjusting the angle according to claim 1, characterized in that: An electric motor connected to the control of a numerically controlled machine tool is fixedly mounted in the cavity, a driving gear is sleeved on the output shaft of the electric motor, and a driven gear meshing with the driving gear is sleeved on the worm (13).

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