Chamfering tool for side wall orifice of deep-cavity part

Abstract

The utility model discloses a deep cavity part side wall orifice chamfering tool which comprises a shell, a telescopic pipe and a chamfering drill bit, the upper surface of the shell is fixedly connected with a motor, the output end of the motor is fixedly connected with a first bevel gear, and one side of the outer surface of the shell is rotationally connected with a second bevel gear. According to the deep-cavity part side wall orifice chamfering tool, through the arrangement of the shell, the telescopic pipe, the universal joint and the sleeve, in the using process, a worker firstly determines the angle between a side wall hole and a deep cavity and forwards rotates the nut, and the effect that the universal joint can move is utilized, so that the sleeve can move by an angle along an arc-shaped groove, and a chamfering drill bit can also rotate by an angle along with the sleeve; after the sleeve is adjusted to a proper angle, the nut is screwed down reversely, the sleeve is fixed, the chamfering tool goes deep into a deep cavity, the chamfering tool is adjusted to a proper position, the motor is started, then the deep cavity side holes can be chamfered, and the tool can chamfer the deep cavity side holes with different angles.

Description

Technical Field

[0001] The utility model relates to the technical field of circular hole chamfering, in particular to a chamfering tool for the orifice of a side wall of a deep cavity part. Background Technique

[0002] For the chamfering of the inner orifice of a hole, the traditional processing method is generally realized by using a reverse chamfering drill bit. During processing, the drill rod needs to be inserted from the orifice of the side wall first, and then the chamfering drill bit is installed inside. The chamfering is realized by the reverse feed of the rotation of the machine tool, and then the drill bit is removed to chamfer the next hole. The processing procedure is cumbersome.

[0003] After retrieval, Chinese Patent Publication No. CN115055722A discloses a chamfering tool for the orifice of a side wall of a deep cavity part. Through the setting of a transition cylinder, a drill chuck and a chamfering drill bit, the chamfering efficiency of the inner side wall orifice of a deep hole is greatly improved. Although the chamfering efficiency of this device is improved, in actual use, for the inner orifice of some non-standard parts, the side wall orifice is not necessarily perpendicular to the deep cavity. The drill bit needs to be able to adjust the angle to chamfer orifices at different angles, and there are also different dimensional requirements for the chamfering depth of the side wall orifice. Therefore, it is very necessary to design a chamfering tool for the orifice of a side wall of a deep cavity part. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a chamfering tool for the orifice of a side wall of a deep cavity part, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A chamfering tool for the orifice of a side wall of a deep cavity part, including a housing, a telescopic tube and a chamfering drill bit. A motor is fixedly connected to the upper surface of the housing, a first bevel gear is fixedly connected to the output end of the motor, a second bevel gear is rotatably connected to one side of the outer surface of the housing, the first bevel gear is meshed with the second bevel gear, a universal joint is fixedly connected to one end of the second bevel gear, the universal joint is fixedly connected to the telescopic tube, a sleeve is movably connected to the outer surface of the telescopic tube, a fixing column is fixedly connected to the outer surface of the sleeve, a nut is threadedly connected to one end of the fixing column, a fixing plate is fixedly connected to one side of the outer surface of the housing, and an arc-shaped groove is opened on the outer surface of the fixing plate.

[0007] In order to make the rotation of the motor stable, as a chamfering tool for the orifice of a side wall of a deep cavity part of the utility model, one end of the first bevel gear is rotatably connected to the bottom end of the housing.

[0008] In order to ensure that the drill bit does not rotate relative to the telescopic tube, as a chamfering tool for the side wall orifice of a deep cavity part of the present utility model, one end of the telescopic tube is provided with a cylindrical hole, and one side of the inner wall of the cylindrical hole is fixedly connected with a limiting post, and the number of the limiting posts is two.

[0009] In order to enable the chamfering drill bit to be installed in the telescopic tube, as a chamfering tool for the side wall orifice of a deep cavity part of the present utility model, a long groove is provided on the outer surface of the chamfering drill bit, and the inner side wall of the long groove is slidably connected with the limiting post.

[0010] In order to adjust the length of the drill bit, as a chamfering tool for the side wall orifice of a deep cavity part of the present utility model, a positioning hole is provided on the outer surface of the chamfering drill bit, and the number of the positioning holes is several.

[0011] In order to clamp the chamfering drill bit, as a chamfering tool for the side wall orifice of a deep cavity part of the present utility model, a groove is provided at one end of the outer surface of the telescopic tube, a pressing plate is rotatably connected to the inner side wall of the groove, a spring is fixedly connected to one side of the lower surface of the pressing plate, and a clamping post is fixedly connected to the other side of the lower surface of the pressing plate.

[0012] In order to accurately adjust the angle of the chamfering drill bit, as a chamfering tool for the side wall orifice of a deep cavity part of the present utility model, angle data is engraved on the outer surface of the fixing plate.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. In the present utility model, through the settings of the housing, telescopic tube, universal joint and sleeve, during the use process, the staff first determines the angle between the side wall hole and the deep cavity, rotates the nut forward, and utilizes the movable effect of the universal joint connection to enable the sleeve to move along the arc-shaped groove, and the chamfering drill bit also rotates with the sleeve. After adjusting to the appropriate angle, the nut is tightened in the reverse direction to fix the sleeve. The chamfering tool is inserted into the deep cavity and adjusted to the appropriate position, and then the motor is started to chamfer the side hole of the deep cavity, and chamfering can be performed on the side holes of the deep cavity with different angles.

[0015] 2. In the present utility model, through the settings of the pressing plate, positioning hole, long groove, spring and limiting post, during the use process, when there are different requirements for the chamfering depth of the side hole of the deep cavity, press the pressing plate on the side where the spring is installed, and the clamping post fixed on the other side of the pressing plate is separated from the positioning hole. Due to the settings of the long groove and the limiting post, the chamfering drill bit can only slide back and forth in the telescopic tube. When the chamfering drill bit slides to the appropriate position in the telescopic tube, release the pressing plate, and the clamping post moves downward under the elastic force of the spring, and the clamping post falls into the positioning hole to fix the drill bit. The diameter of the telescopic tube is larger than the diameter of the drill bit, and the staff can process the side holes with different chamfering depths as required. Description of the Drawings

[0016] Figure 1 Schematic front view structure diagram of an embodiment of the present utility model;

[0017] Figure 2 Schematic structure diagram of the first bevel gear of an embodiment of the present utility model;

[0018] Figure 3 Schematic sectional view structure diagram of a chamfering drill bit of an embodiment of the present utility model;

[0019] Figure 4 Schematic structure diagram of a telescopic tube of an embodiment of the present utility model;

[0020] Figure 5 Schematic rear view structure diagram of an embodiment of the present utility model;

[0021] Figure 6 For an embodiment of the present utility model Figure 3 Enlarged schematic diagram of the local structure at position A.

[0022] In the figure: 1, housing; 2, motor; 3, fixing plate; 4, telescopic tube; 5, chamfering drill bit; 6, arc-shaped groove; 7, positioning hole; 8, clamping column; 9, spring; 10, pressing plate; 11, first bevel gear; 12, second bevel gear; 14, universal joint; 15, sleeve; 16, fixing column; 17, nut; 18, cylindrical hole; 19, limiting column; 20, long groove. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment

[0025] As Figures 1-6As shown in the figure, a chamfering tool for the side wall hole of a deep cavity part includes a housing 1, a telescopic pipe 4 and a chamfering drill bit 5. A motor 2 is fixedly connected to the upper surface of the housing 1, and a first bevel gear 11 is fixedly connected to the output end of the motor 2. One side of the outer surface of the housing 1 is rotatably connected to a second bevel gear 12. The first bevel gear 11 and the second bevel gear 12 are meshed. One end of the second bevel gear 12 is fixedly connected to a universal joint 14, and the universal joint 14 is fixedly connected to the telescopic pipe 4. The outer surface of the telescopic pipe 4 is movably connected to a sleeve 15. A fixing column 16 is fixedly connected to the outer surface of the sleeve 15. One end of the fixing column 16 is threadedly connected to a nut 17. One side of the outer surface of the housing 1 is fixedly connected to a fixing plate 3, and an arc-shaped groove 6 is formed on the outer surface of the fixing plate 3.

[0026] During specific use, when chamfering side holes at different angles is required, the staff rotates the nut 17 clockwise. Utilizing the movable effect of the connection of the universal joint 14, the sleeve 15 can move along the arc-shaped groove 6, and the chamfering drill bit 5 also rotates with the sleeve 15. There are two fixing plates 3, which are convenient for fixing the telescopic pipe 4. There are angle data on the fixing plate 3. After adjusting to the appropriate angle, the nut 17 is tightened counterclockwise, and the sleeve 15 is fixed through the fixing column 16. The chamfering tool is inserted deep into the deep cavity and adjusted to the appropriate position, and then the motor 2 is started to chamfer the side hole of the deep cavity, realizing chamfering of the side holes of the deep cavity at different angles.

[0027] In this embodiment, one end of the first bevel gear 11 is rotatably connected to the bottom end of the housing 1.

[0028] During specific use, the output end of the motor 2 is fixedly connected to the first bevel gear 11. The output end of the motor 2 passes through the upper surface of the housing 1, and the other end of the first bevel gear 11 is rotatably connected to the lower surface of the housing 1, which can enable the first bevel gear 11 to rotate stably in the housing 1.

[0029] In this embodiment, a cylindrical hole 18 is formed at one end of the telescopic pipe 4, and a limiting column 19 is fixedly connected to one side of the inner wall of the cylindrical hole 18. The number of the limiting columns 19 is two.

[0030] During specific use, the formation of the cylindrical hole 18 and the limiting column 19 enables the chamfering drill bit 5 to only slide in the cylindrical hole 18 without rotating.

[0031] In this embodiment, a long groove 20 is formed on the outer surface of the chamfering drill bit 5, and the inner side wall of the long groove 20 is slidably connected to the limiting column 19.

[0032] During specific use, the long groove 20 cooperates with the limiting column 19, and the chamfering drill bit 5 slides in the cylindrical hole 18.

[0033] In this embodiment, a positioning hole 7 is formed on the outer surface of the chamfering drill bit 5, and the number of the positioning holes 7 is several.

[0034] During specific use, the positioning post 8 is inserted into the positioning hole 7 under the action of the spring 9. Inserting into different positioning holes 7 represents different lengths of the chamfering drill bit 5.

[0035] In this embodiment, a groove is formed at one end of the outer surface of the telescopic tube 4. A pressing plate 10 is rotatably connected to the inner side wall of the groove. One side of the lower surface of the pressing plate 10 is fixedly connected with a spring 9, and the other side of the lower surface of the pressing plate 10 is fixedly connected with a positioning post 8.

[0036] During specific use, the lower surface of the pressing plate 10 is fixedly connected with a rotating shaft and rotatably connected to the telescopic tube 4. Press the pressing plate 10 on one side of the spring 9, and the positioning post 8 on the other side rises and separates from the positioning hole 7.

[0037] In this embodiment, angle data is engraved on the outer surface of the fixing plate 3.

[0038] During specific use, for different side hole angles, the angle of the telescopic tube 4 can be adjusted according to the scale on the fixing plate 3.

[0039] Working principle: During the use process, when chamfering deep cavity side holes at different angles, first determine the angle between the side wall hole and the deep cavity. The staff rotates the nut 17 forward. Utilizing the movable effect connected by the universal joint 14, the sleeve 15 can move along the arc-shaped groove 6 at an angle. The chamfering drill bit 5 also rotates at an angle along with the sleeve 15. There are two fixing plates 3, which are convenient for fixing the telescopic tube 4. Angle data is provided on the fixing plate 3. After adjusting to the appropriate angle, tighten the nut 17 in the reverse direction, and fix the sleeve 15 through the fixing post 16. Insert the chamfering tool into the deep cavity and adjust it to the appropriate position. Start the motor 2 to chamfer the deep cavity side hole, realizing chamfering of deep cavity side holes at different angles. When different requirements for the chamfering depth are needed, press the pressing plate 10 on the side where the spring 9 is installed. The positioning post 8 fixed on the other side of the pressing plate 10 separates from the positioning hole 7. Due to the arrangement of the long groove 20 and the limiting post 19, the chamfering drill bit 5 can only slide back and forth in the telescopic tube 4. Slide the chamfering drill bit 5 in the telescopic tube 4 to the appropriate position, release the pressing plate 10, and the positioning post 8 moves downward under the elastic force of the spring 9. The positioning post 8 falls into the positioning hole 7 to fix the chamfering drill bit 5. The diameter of the telescopic tube 4 is larger than the diameter of the chamfering drill bit 5. Place the tool into the deep cavity, align the chamfering drill bit 5 with the side hole, and start the motor 2 to chamfer the side hole at different depths.

[0040] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tool for chamfering a side wall hole of a deep cavity part, comprising a housing (1), a telescopic tube (4) and a chamfering drill bit (5), characterized in that: The upper surface of the housing (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a first bevel gear (11), one side of the outer surface of the housing (1) is rotatably connected to a second bevel gear (12), the first bevel gear (11) and the second bevel gear (12) are meshingly connected, one end of the second bevel gear (12) is fixedly connected to a universal joint (14), the universal joint (14) is fixedly connected to the telescopic tube (4), the outer surface of the telescopic tube (4) is movably connected to a sleeve (15), the outer surface of the sleeve (15) is fixedly connected to a fixing column (16), one end of the fixing column (16) is threadedly connected to a nut (17), one side of the outer surface of the housing (1) is fixedly connected to a fixing plate (3), the outer surface of the fixing plate (3) is provided with an arc-shaped groove (6).

2. A deep cavity part side wall chamfering tool according to claim 1, characterized in that: One end of the first bevel gear (11) is rotatably connected to the bottom end of the housing (1).

3. A chamfering tool for side wall openings of deep cavity parts according to claim 1, characterized in that: A cylindrical hole (18) is formed at one end of the telescopic tube (4), and a limiting column (19) is fixedly connected to one side of the inner wall of the cylindrical hole (18), wherein the number of the limiting columns (19) is two.

4. A deep cavity part side wall chamfering tool according to claim 1, characterized in that: An elongated groove (20) is formed on the outer surface of the chamfering drill bit (5), and an inner side wall of the elongated groove (20) is slidably connected to a limiting column (19).

5. A chamfering tool for side wall openings of deep cavity parts according to claim 4, characterized in that: The outer surface of the chamfering drill bit (5) is provided with positioning holes (7), and the number of the positioning holes (7) is a plurality.

6. A deep cavity part side wall chamfering tool according to claim 3, characterized in that: A groove is formed at one end of the outer surface of the telescopic tube (4); a pressing plate (10) is rotatably connected to the inner wall of the groove; a spring (9) is fixedly connected to one side of the lower surface of the pressing plate (10); and a locking column (8) is fixedly connected to the other side of the lower surface of the pressing plate (10).

7. A deep cavity part side wall chamfering tool according to claim 1, characterized in that: Angle data are engraved on the outer surface of the fixing plate (3).

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