Inner-cooling expanding drill with guiding and gauge protection functions

Abstract

The utility model belongs to the technical field of expanding drills, particularly relates to an inner-cooling expanding drill with a guide gauge protection function, and aims to solve the problems that in the using process of an existing expanding drill, a drill bit is poor in stability, deviation is prone to occurring during drilling and expanding, and the expanding efficiency is low. A guide mechanism used for guiding the reamer is arranged on the outer surface of the fixing handle, a quick detaching mechanism used for detaching the reamer is arranged at one end of the fixing handle, and a heat dissipation mechanism used for dissipating heat of the reamer is arranged at the other end of the fixing handle. The guide mechanism comprises a fixed bearing, and the fixed bearing is arranged on the outer surface of the fixed handle in a sleeving mode. By means of the limiting groove formed in the fixing handle, under the cooperation of the limiting block, the limiting function can be achieved, the fixing bearing arranged on the fixing shell can guarantee that the connecting rod cannot be driven to rotate when the fixing handle rotates, and then the guiding function can be achieved conveniently during feeding.

Description

Technical Field

[0001] This utility model relates to an internal cooling reamer, specifically an internal cooling reamer with guiding and diameter-maintaining functions, belonging to the field of reamer technology. Background Technology

[0002] Internal cooling reamers, as the name suggests, are reamers that achieve cooling through built-in cooling channels. They are mainly used for semi-finishing or final machining of holes, especially in applications requiring the enlargement of existing holes and improvement of cylindricity and surface finish. Internal cooling reamers have wide applications in aerospace, electronics, and other industries where high precision and surface finish are required.

[0003] In existing technologies, such as the three-flute internal cooling reaming drill bit disclosed in CN219188753U, a fixing plate is included. A fixing mechanism is provided at the bottom of the fixing plate. The fixing mechanism includes a main body, a receiving plate, a fixing rod, a base, and fixing bolts. The outer surface of the main body is fixedly connected to the interior of the fixing plate. The receiving plate is fixedly installed on the outer surface of the main body, and the base can be fixedly installed on the upper surface of the receiving plate through the receiving plate's support function. The fixing bolts, connected by internal threads to the base, have one end abutting against the outer surface of the main body, making the installation more stable and effectively solving the problem of how to stably install the drill bit, thus achieving an effective drill bit installation.

[0004] The above technical solution uses a receiving plate fixedly installed on the outer surface of the main body, and the receiving plate's support function makes the installation more stable, effectively solving the problem of how to stably install the drill bit. However, during use, the drill bit has poor stability and is prone to deviation when drilling and reaming, resulting in low reaming efficiency. In view of this, an internally cooled reaming drill with guiding and diameter-maintaining function is provided to overcome the above defects. Utility Model Content

[0005] This invention provides an internally cooled reamer with guiding and diameter-maintaining functions to solve the problems mentioned above, such as poor drill bit stability and easy deviation during drilling and reaming, which leads to low reaming efficiency.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: an internal cooling reamer with guiding and diameter-maintaining function, comprising a fixed shank, wherein the outer surface of the fixed shank is provided with a guiding mechanism for guiding the reamer, one end of the fixed shank is provided with a quick-release mechanism for disassembling the reamer, and the other end of the fixed shank is provided with a heat dissipation mechanism for dissipating heat from the reamer.

[0007] The guiding mechanism includes a fixed bearing, which is sleeved on the outer surface of the fixed handle. A fixed shell is fixed to the outer wall of the fixed bearing. Two connecting rods are symmetrically fixed to the outer wall of the fixed shell. A fixed plate is fixed to the end of each of the two connecting rods. Four fixing bolts are installed inside the fixed plate.

[0008] As a further improvement of this utility model: a limiting groove is provided on the outer wall of the fixed handle, and a limiting block is slidably connected to the inner wall of the fixed bearing inside the limiting groove.

[0009] As a further improvement of this utility model: the quick-release mechanism includes a connecting groove, which is formed at the other end of the fixed handle.

[0010] As a further embodiment of this utility model: a connector is inserted into the inside of the connecting groove, and a reaming drill body is fixed at one end of the connector.

[0011] As a further improvement of this utility model: a limiting hole is provided on the upper surface of the connector, and a limiting screw that is threadedly connected to the fixing handle is inserted into the limiting hole.

[0012] As a further improvement of this utility model, one end of the reaming drill body is provided with a water spray hole that communicates with the connecting groove.

[0013] As a further embodiment of this utility model: the heat dissipation mechanism includes a connecting pipe, the connecting pipe is installed at the front end of the fixed handle, the end of the connecting pipe passes through the inner wall of the fixed handle and is fixedly fixed with a limiting plate, and the outer surface of the limiting plate is rotatably connected with a limiting member that is fixedly connected to the fixed handle.

[0014] The beneficial effects of this utility model are: the limiting groove opened on the fixed handle can play a limiting role with the cooperation of the limiting block, and the fixed bearing set on the fixed shell can ensure that the connecting rod will not be driven to rotate when the fixed handle rotates, thus facilitating the guiding role during feeding.

[0015] The coolant enters the fixed handle through the connecting pipe. The limiting plate and limiting component can prevent the connecting pipe from falling off. The coolant is sprayed out through the water spray hole on the reaming drill body, so that the coolant sprays out from the inside of the hole, which can cool the reaming drill body and improve its practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the fixing handle of this utility model;

[0018] Figure 3This is a three-dimensional structural diagram of the reaming drill body of this utility model;

[0019] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Fixing handle; 2. Fixing bearing; 21. Fixing shell; 22. Connecting rod; 23. Fixing plate; 24. Fixing bolt; 3. Limiting groove; 4. Limiting block; 5. Connecting groove; 51. Connecting piece; 52. Reamer body; 53. Limiting hole; 54. Limiting screw; 6. Water spray hole; 7. Connecting pipe; 71. Limiting plate; 72. Limiting piece. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 4 As shown, an internally cooled reamer with guiding and diameter-maintaining function includes a fixed shank 1. The outer surface of the fixed shank 1 is provided with a guiding mechanism for guiding the reamer. One end of the fixed shank 1 is provided with a quick-release mechanism for disassembling the reamer, and the other end of the fixed shank 1 is provided with a heat dissipation mechanism for cooling the reamer.

[0023] The guiding mechanism includes a fixed bearing 2, which is sleeved on the outer surface of the fixed handle 1. A fixed shell 21 is fixed to the outer wall of the fixed bearing 2. Two connecting rods 22 are symmetrically fixed to the outer wall of the fixed shell 21. A fixed plate 23 is fixed to the end of each of the two connecting rods 22. Four fixing bolts 24 are installed inside the fixed plate 23. A limiting groove 3 is opened on the outer wall of the fixed handle 1. A limiting block 4, which is fixedly connected to the inner wall of the fixed bearing 2, is slidably connected inside the limiting groove 3. When the reaming drill is feeding, the limiting groove 3 on the fixed handle 1, in cooperation with the limiting block 4, can play a limiting role. The fixed bearing 2 on the fixed shell 21 can ensure that the connecting rods 22 will not rotate when the fixed handle 1 rotates, thus facilitating the guiding role during feeding. Example 2

[0024] In addition to all the technical features in Embodiment 1, this embodiment also includes: a quick-release mechanism including a connecting groove 5, which is located at the other end of the fixed handle 1. A connector 51 is inserted into the connecting groove 5. A reaming drill body 52 is fixed at one end of the connector 51. A limiting hole 53 is provided on the upper surface of the connector 51. A limiting screw 54 threadedly connected to the fixed handle 1 is inserted into the limiting hole 53. A water spray hole 6 communicating with the connecting groove 5 is provided at one end of the reaming drill body 52. ​​By unscrewing the limiting screw 54 provided on the fixed handle 1, the limiting screw 54 and the limiting hole 53 on the connector 51 are separated. Under the action of the connecting groove 5, the reaming drill body 52 can be disassembled, making it convenient to replace the reaming drill body 52 separately. Example 3

[0025] In addition to all the technical features in Embodiment 1, this embodiment also includes: a heat dissipation mechanism including a connecting pipe 7, the connecting pipe 7 being installed at the front end of the fixed handle 1, the end of the connecting pipe 7 penetrating the inner wall of the fixed handle 1 and fixing a limiting plate 71, the outer surface of the limiting plate 71 being rotatably connected to a limiting member 72 fixedly connected to the fixed handle 1, the coolant being able to enter the fixed handle 1 through the connecting pipe 7, the limiting plate 71 and the limiting member 72 being provided to prevent the connecting pipe 7 from falling off, the coolant being sprayed out through the water spray hole 6 on the reaming drill body 52, so that the coolant is sprayed out from the inside of the hole, which can cool the reaming drill body 52 and improve its practicality.

[0026] Working Principle: Before using the internal cooling reamer with guiding and diameter-maintaining function, first connect and fix the reamer to the output shaft of the drive device. This is done by fixing the fixed handle 1 to the output shaft of the drive device, then connecting the fixed plate 23 to the housing of the drive device, tightening the fixing bolts 24, and finally fixing the fixed plate 23 to the housing of the drive device. This completes the assembly. During use, the device drives the fixed handle 1 to rotate, which in turn drives the reamer body 52 to rotate, thus reaming the workpiece. The connecting pipe 7 is connected to an external water supply pipe, allowing coolant to enter the fixed handle 1 through the connecting pipe 7. The limiting plate 71 and limiting element 72 prevent the connecting pipe 7 from falling off. The coolant... The coolant sprays out through the water spray hole 6 on the reamer body 52, allowing the coolant to spray out from the inside of the hole, which can cool the reamer body 52 and improve its practicality. When the reamer is being fed, the limiting groove 3 on the fixed handle 1, in cooperation with the limiting block 4, can play a limiting role. The fixed bearing 2 on the fixed shell 21 can ensure that the connecting rod 22 will not rotate when the fixed handle 1 rotates, thus facilitating the guiding role during feeding. By unscrewing the limiting screw 54 on the fixed handle 1, the limiting screw 54 and the limiting hole 53 on the connecting piece 51 are separated. Under the action of the connecting groove 5, the reamer body 52 can be disassembled, making it convenient to replace the reamer body 52 separately.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An internal cooling reamer with guiding and diameter-maintaining function, comprising a fixed shank (1), characterized in that: The outer surface of the fixed handle (1) is provided with a guide mechanism for guiding the reamer, one end of the fixed handle (1) is provided with a quick-release mechanism for disassembling the reamer, and the other end of the fixed handle (1) is provided with a heat dissipation mechanism for cooling the reamer. The guiding mechanism includes a fixed bearing (2), which is sleeved on the outer surface of the fixed handle (1). A fixed shell (21) is fixed to the outer wall of the fixed bearing (2). Two connecting rods (22) are symmetrically fixed to the outer wall of the fixed shell (21). A fixed plate (23) is fixed to the end of each of the two connecting rods (22). Four fixing bolts (24) are installed inside the fixed plate (23).

2. The internal cooling reamer with guiding and diameter-maintaining function according to claim 1, characterized in that: The outer wall of the fixed handle (1) is provided with a limiting groove (3), and the inner wall of the limiting groove (3) is slidably connected to a limiting block (4) which is fixedly connected to the inner wall of the fixed bearing (2).

3. The internal cooling reamer with guiding and diameter-maintaining function according to claim 1, characterized in that: The quick-release mechanism includes a connecting groove (5), which is located at the other end of the fixing handle (1).

4. The internal cooling reamer with guiding and diameter-maintaining function according to claim 3, characterized in that: A connector (51) is inserted into the inside of the connecting groove (5), and a reaming drill body (52) is fixed at one end of the connector (51).

5. An internal cooling reamer with guiding and diameter-maintaining function according to claim 4, characterized in that: The upper surface of the connector (51) has a limiting hole (53), and a limiting screw (54) that is threadedly connected to the fixing handle (1) is inserted into the limiting hole (53).

6. The internal cooling reamer with guiding and diameter-maintaining function according to claim 5, characterized in that: One end of the reaming drill body (52) is provided with a water jet hole (6) that communicates with the connecting groove (5).

7. The internal cooling reamer with guiding and diameter-maintaining function according to claim 1, characterized in that: The heat dissipation mechanism includes a connecting pipe (7), which is installed at the front end of the fixed handle (1). The end of the connecting pipe (7) passes through the inner wall of the fixed handle (1) and is fixed with a limiting plate (71). The outer surface of the limiting plate (71) is rotatably connected with a limiting member (72) that is fixedly connected to the fixed handle (1).

Images