Drilling tool for machining deep blind holes of aircraft shaft parts

Abstract

The utility model discloses a drilling tool for machining deep blind holes of aircraft shaft parts, and relates to the technical field of drilling tools. The drilling tool for machining the deep blind hole of the aircraft shaft part comprises a tool handle, two sets of threaded blades are arranged on the outer wall of the tool handle and arranged in an annular array mode, a drill bit is fixedly installed at the bottom of the tool handle and the bottoms of the two sets of threaded blades, the drilling tool further comprises a cooling liquid groove formed in the tool handle, and cooling liquid is injected into the deep hole through the cooling liquid groove. The water conveying structure is mounted on the outer wall of the cutter handle. According to the drilling tool for machining the deep blind hole of the aircraft shaft part, the hollow shell is installed on the outer side of the tool handle through the fixing bolt and the nut, cooling liquid can be conveniently injected into a cooling liquid groove, the cooling liquid can be driven to directly flow into a drill bit through the cooling liquid groove, the cooling liquid can make full contact with the drill bit, and the drilling efficiency is improved. High temperature of the drill bit is avoided, abrasion of the drill bit is reduced, and service life of the drill bit is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tools, in particular to a drilling tool for machining deep blind holes in aircraft shaft parts. Background Art

[0002] Chinese patent document CN210548317U discloses a drill tool for machining deep blind holes in aviation shaft parts, comprising an integrally formed shank and a cutter head. The outer wall of the cutter head is inlaid with multiple damping blocks and multiple positioning keys. The damping blocks are located at the end of the cutter head's outer wall near the shank, and the positioning keys are located at the end of the cutter head's outer wall away from the shank. A first and second cutter heads are provided on the end face of the cutter head away from the shank. The first cutter head is mounted on the first cutter head, and the second cutter head is mounted on the second cutter head. The first cutter head is located at the center of the cutter head's end face. The edge of the third cutter head begins at the center of the cutter head's end face and ends at the middle of the cutter head's side wall. The edge of the third cutter head is an arc-shaped cutting edge at the edge of the cutter head's end face. The advantages of this utility model are that, by providing the damping blocks and positioning keys on the side wall of the drill bit, the bottom hole size and roughness can be guaranteed during deep hole machining. Furthermore, the feed rate is reduced to 0.1 mm / r, greatly improving machining efficiency.

[0003] However, when the above-mentioned drill tool is used to perform deep hole processing on parts, the tool shank is tightly attached to the deep hole, resulting in insufficient contact between the coolant and the drill bit, causing the drill bit to heat up, which can easily lead to rapid wear of the drill bit or even breakage. Utility Model Content

[0004] The purpose of the present utility model is to provide a drilling tool for machining deep blind holes in aircraft shaft parts, so as to solve the problems and defects raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drilling tool for processing deep blind holes in aircraft shaft parts, comprising a tool holder, the outer wall of which is provided with two sets of threaded blades, the two sets of threaded blades being arranged in a circular array, a drill bit being fixedly mounted on the bottom of the tool holder and the two sets of threaded blades, and a coolant tank provided on the tool holder, through which coolant is injected into the deep hole, and a water supply structure installed on the outer wall of the tool holder, through which coolant is transported into the coolant tank.

[0006] Preferably, the water supply structure includes a hollow shell and an infusion hose. There are two groups of hollow shells, both of which are sleeved on the outer wall of the tool handle, and the two groups of hollow shells are symmetrically arranged up and down. The infusion hose is fixedly installed on the top of one group of hollow shells, and the infusion hose is communicated with the interior of the hollow shell, and is used to inject coolant into the interior of the coolant tank, driving the coolant to flow directly into the drill bit, so that the coolant can fully contact the drill bit, avoid high temperature of the drill bit, reduce wear of the drill bit, and extend the use of the drill bit.

[0007] Preferably, the two groups of hollow shells are each provided with six groups of mounting holes, a fixing bolt is placed in each group of mounting holes, and a nut is threadedly mounted on the outer wall of each group of fixing bolts for mounting the hollow shell on the outside of the shank.

[0008] Preferably, adjacent side walls of the two groups of hollow shells are provided with sealing grooves B, and sealing rings B are provided in the sealing grooves B to improve the sealing between the two groups of hollow shells.

[0009] Preferably, the inner walls of the two groups of hollow shells are provided with sealing grooves A, and sealing rings A are provided in the sealing grooves A to improve the sealing effect between the hollow shells and the knife handle.

[0010] Preferably, the infusion hose is provided with a valve, and one end of the infusion hose is connected to a water pump.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The drill tool for processing deep blind holes in aircraft shaft parts is used to install a hollow shell on the outside of a tool holder by fixing bolts and nuts. Coolant can be easily injected into the interior of a coolant tank. The coolant can be driven to flow directly into the drill bit through the coolant tank, so that the coolant can fully contact the drill bit, avoid high drill bit temperature, reduce drill bit wear, and extend the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a structural schematic diagram of the other side of the utility model;

[0016] Figure 3 It is a cross-sectional view of the hollow shell of the utility model;

[0017] Figure 4 It is a cross-sectional view of the handle of the utility model.

[0018] Figure numerals: 1. tool handle; 2. threaded blade; 3. drill bit; 4. coolant tank; 5. hollow shell; 6. infusion hose; 7. fixing bolt; 8. nut; 9. sealing ring A; 10. sealing ring B. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0020] See also Figure 1-4 The utility model provides a technical solution: a drilling tool for processing deep blind holes in aircraft shaft parts, comprising a tool holder 1, the outer wall of the tool holder 1 is provided with two groups of threaded blades 2, the two groups of threaded blades 2 are arranged in a ring array, the tool holder 1 and the bottom of the two groups of threaded blades 2 are fixedly installed with a drill bit 3, and further comprising a coolant tank 4 opened on the tool holder 1, through which coolant is injected into the deep hole, a water delivery structure installed on the outer wall of the tool holder 1, through which coolant is delivered to the coolant tank 4, the top end of the tool holder 1 is fixed to a drilling rig, and by starting the drilling rig, the drilling rig drives the tool holder 1, the threaded blades 2, and the drill bit 3 to rotate, so that the drill bit 3 can drill a hole in the workpiece.

[0021] The water supply structure includes a hollow shell 5 and an infusion hose 6. There are two groups of hollow shells 5, both of which are sleeved on the outer wall of the tool handle 1, and the two groups of hollow shells 5 are symmetrically arranged in an upper and lower manner. The infusion hose 6 is fixedly installed on the top of one group of hollow shells 5, and the infusion hose 6 is communicated with the interior of the hollow shell 5, and is used to inject coolant into the interior of the coolant tank 4, driving the coolant to flow directly into the drill bit 3, so that the coolant can fully contact the drill bit 3, avoid the high temperature of the drill bit 3, reduce the wear of the drill bit 3, and extend the use of the drill bit 3.

[0022] Both sets of hollow shells 5 are provided with six sets of mounting holes, each set of mounting holes is provided with a fixing bolt 7 , and the outer wall of each set of fixing bolts 7 is threadedly provided with a nut 8 for mounting the hollow shell 5 on the outside of the shank 1 .

[0023] Adjacent side walls of the two groups of hollow shells 5 are provided with sealing grooves B, and sealing rings B10 are provided in the sealing grooves B to improve the sealing between the two groups of hollow shells 5 .

[0024] The inner walls of the two groups of hollow shells 5 are provided with sealing grooves A, and sealing rings A9 are provided in the sealing grooves A to improve the sealing effect between the hollow shells 5 and the knife handle 1.

[0025] The infusion hose 6 is provided with a valve, and one end of the infusion hose 6 is connected to the water pump. When the water pump is started, the water pump injects the coolant into the cooling liquid tank 4 through the infusion hose 6 and the nut 8 in sequence. The coolant is then transported to the outer wall of the drill bit 3 through the cooling liquid tank 4, so that the drill bit 3 is cooled.

[0026] Working principle: Connect one end of the infusion hose 6 to the water pump, fix the top of the tool handle 1 on the drill rig, and start the drill rig, which drives the tool handle 1, threaded blade 2, and drill bit 3 to rotate, so that the drill bit 3 can drill the workpiece. By starting the water pump, the water pump injects the coolant into the coolant tank 4 through the infusion hose 6 and the nut 8 in turn. The coolant is then transported to the outer wall of the drill bit 3 through the coolant tank 4, so that the drill bit 3 is cooled.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A drilling tool for machining deep blind holes in aircraft shaft parts, comprising a tool holder (1), the outer wall of which is provided with two sets of threaded blades (2), the two sets of threaded blades (2) being arranged in a ring array, a drill bit (3) being fixedly mounted between the tool holder (1) and the bottom of the two sets of threaded blades (2), and characterized in that: Also includes: A coolant tank (4) is provided on the tool handle (1), and is used to inject coolant into the deep hole through the coolant tank (4); A water delivery structure is installed on the outer wall of the tool handle (1), and is used to deliver the coolant into the coolant tank (4).

2. A drilling tool for machining deep blind holes in aircraft shaft parts according to claim 1, characterized in that: The water delivery structure comprises a hollow shell (5) and an infusion hose (6). The hollow shell (5) has two groups, both of which are sleeved on the outer wall of the knife handle (1), and the two groups of hollow shells (5) are symmetrically arranged in an upper and lower direction. The infusion hose (6) is fixedly installed on the top of one group of hollow shells (5), and the infusion hose (6) is communicated with the interior of the hollow shell (5).

3. The drilling tool for machining deep blind holes in aircraft shaft parts according to claim 2, characterized in that: The two groups of hollow shells (5) are each provided with six groups of mounting holes, each group of mounting holes is provided with a fixing bolt (7), and the outer wall of each group of fixing bolts (7) is threadedly provided with a nut (8).

4. A drilling tool for machining deep blind holes in aircraft shaft parts according to claim 3, characterized in that: Adjacent side walls of the two groups of hollow shells (5) are provided with sealing grooves B, and sealing rings B (10) are provided in the sealing grooves B.

5. The drilling tool for machining deep blind holes in aircraft shaft parts according to claim 4, characterized in that: The inner walls of the two groups of hollow shells (5) are provided with sealing grooves A, and sealing rings A (9) are provided in the sealing grooves A.

6. The drilling tool for machining deep blind holes in aircraft shaft parts according to claim 5, characterized in that: The infusion hose (6) is provided with a valve, and one end of the infusion hose (6) is connected to a water pump.

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