A deep hole gun drill convenient to clean

Abstract

The utility model relates to gun drill technical field especially, relates to a deep hole gun drill convenient to clean, including base, gun drill handle part, gun drill stem, drill rod guide sleeve, first annular end plate, second annular end plate, expansion joint pipe, liquid supply toughening pipe and liquid inlet convex pipe, the inside activity of base has gun drill handle part and is limited, the side end of gun drill handle part is fixed with gun drill stem, the outside of gun drill stem is equipped with drill rod guide sleeve, the outside of base / drill rod guide sleeve is fixed with first / second annular end plate, and the expansion joint pipe is connected between first and second annular end plate, and the inside embedding of gun drill stem is fixed with liquid supply toughening pipe, and the outside of base is installed with liquid inlet convex pipe. The utility model is equipped with drill rod guide sleeve, can play the protection effect to drill rod, prolongs the service life of drill rod, and simultaneously can use drill rod guide sleeve cooperation liquid inlet system to carry out the quick cleaning to the chip flute at drill rod drill bit, has solved the inconvenient problem of traditional deep hole gun drill cleaning.

Description

Technical Field

[0001] This utility model relates to the field of gun drill technology, and in particular to a deep hole gun drill that is easy to clean. Background Technology

[0002] Deep hole gun drills are primarily used for deep hole machining, achieving high-precision deep holes. They are widely used in machining processes, such as deep hole machining of mold steel, fiberglass, Teflon plastics, and high-strength alloys. Traditional deep hole gun drills consist of a drill shank and a drill rod, with the shank typically made of stainless steel or high-speed steel. Special slots are usually cut for rapid chip removal. After use, the drill bit's outer surface becomes covered in dirt. If not cleaned promptly, the dirt will deepen and become difficult to remove. The thick layer of dirt will affect drilling accuracy, thus impacting the normal operation of the drill bit.

[0003] Existing deep hole gun drills still have shortcomings in use. First, they lack a drill rod guide sleeve to protect the drill rod; second, they cannot utilize the drill rod guide sleeve to quickly clean the chip removal grooves at the drill rod and drill bit. In view of this, the inventors hope to optimize and improve existing deep hole gun drills. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and provide a deep hole gun drill that is easy to clean.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical embodiments: A deep-hole gun drill that is easy to clean includes a base, a gun drill shank, a gun drill rod, a drill rod guide sleeve, a first annular end plate, a second annular end plate, a telescopic joint tube, a fluid supply and toughening tube, and a fluid inlet protrusion tube. The base internally restricts the movement of the gun drill shank. A gun drill rod extending from the base is fixed to the side end of the gun drill shank. A drill rod guide sleeve is fitted onto the outer side of the gun drill rod. A first annular end plate is fixed to the outer side of the base, and a second annular end plate is fixed to the outer side of the drill rod guide sleeve. Several telescopic joint pipes are connected between the end plate and the second annular end plate. A fluid supply toughening pipe is embedded and fixed inside the gun drill rod. An inlet protrusion is installed on the outside of the base to facilitate the supply of coolant or cleaning fluid to one end of the fluid supply toughening pipe. A drill bit is provided at the outer end of the gun drill rod. A spiral chip removal groove is opened on the outer side of the gun drill rod near the drill bit. A fluid guiding cavity is provided inside the gun drill rod near the other end of the fluid supply toughening pipe. A fluid guiding channel is opened between the fluid guiding cavity and the inclined surface of the drill bit.

[0006] Furthermore, in the aforementioned easy-to-clean deep hole gun drill, the axial length of the drill rod guide sleeve and the axial length of the spiral chip removal groove are matched. When one end of the drill rod guide sleeve is aligned with the drill head, the groove of the spiral chip removal groove away from the drill head is just exposed from the other end of the drill rod guide sleeve.

[0007] Furthermore, in the aforementioned easy-to-clean deep hole gun drill, the gun drill shank includes a cylindrical shank body. One end of the cylindrical shank body is provided with a snap-fit ​​connector, and the other end of the cylindrical shank body is fixed to the gun drill rod. An axial fluid guide groove and a radial fluid guide groove are provided inside the cylindrical shank body. One end of the axial fluid guide groove is connected to the radial fluid guide groove, and the other end of the axial fluid guide groove is connected to the fluid supply toughening pipe. The outer port of the radial fluid guide groove extends to the outer surface of the cylindrical shank body.

[0008] Furthermore, in the aforementioned easy-to-clean deep-hole gun drill, the outer diameter of the clamping connector and the outer diameter of the gun drill rod are both smaller than the outer diameter of the cylindrical shank body.

[0009] Furthermore, in the aforementioned easy-to-clean deep hole gun drill, the base has a first movable cavity for restricting the cylindrical shank body, a second annular cavity that mates with the snap-fit ​​connector, and a third movable cavity that mates with the drill rod. The diameter of the first movable cavity is larger than the outer diameter of the cylindrical shank body, and the inner wall of the first movable cavity has a liquid inlet that communicates with the liquid inlet protrusion.

[0010] Furthermore, in the aforementioned easy-to-clean deep hole gun drill, the drill rod guide sleeve, the first annular end plate, the second annular end plate, and the telescopic joint tube are all made of stainless steel.

[0011] Furthermore, in the aforementioned easy-to-clean deep-hole gun drill, the base, gun drill shank, and gun drill rod are made of alloy structural steel.

[0012] Furthermore, in the aforementioned easy-to-clean deep hole gun drill, the liquid supply toughening tube is made of chromium-nickel-iron alloy.

[0013] The beneficial effects of this utility model are: 1. Easy to clean: The drill pipe guide sleeve can be used to quickly clean the chip removal grooves at the drill pipe and drill bit, which solves the problem of inconvenient cleaning of traditional deep hole gun drills and avoids the accumulation of dirt, which affects drilling accuracy and normal operation of the drill bit.

[0014] 2. Drill pipe protection: The drill pipe is equipped with a guide sleeve, which can protect the drill pipe and extend its service life.

[0015] 3. Reasonable structure: The components are ingeniously designed and work together to deliver coolant or cleaning fluid through reasonable channel settings, ensuring the cooling and cleaning needs during deep hole machining.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the gun drill component in this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 yes Figure 2 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the base structure in this utility model; Figure 6 This is a schematic diagram of the liquid inlet principle of this utility model; Figure 7 This is a schematic diagram of the composition of the guide component in this utility model; Figure 8 This is a schematic diagram of the cleaning and protection status of this utility model; In the attached diagram, the components represented by each number are as follows: 1-Base, 2-Gun drill shank, 201-Cylindrical shank body, 202-Clip connector, 203-Radial fluid guide groove, 204-Axial fluid guide groove, 3-Gun drill rod, 301-Drill head, 302-Helical chip removal groove, 303-Fluid guide cavity, 304-Fluid guide channel, 4-Drill rod guide sleeve, 5-First annular end plate, 6-Second annular end plate, 7-Expansion joint tube, 8-Fluid supply toughening tube, 9-Fluid inlet protrusion tube. Detailed Implementation

[0019] The technical embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1-8As shown, this embodiment provides a deep-hole gun drill that is easy to clean, including a base 1, a gun drill shank 2, a gun drill rod 3, a drill rod guide sleeve 4, a first annular end plate 5, a second annular end plate 6, a telescopic joint tube 7, a fluid supply toughening tube 8, and a fluid inlet protrusion tube 9. The gun drill shank 2, the gun drill rod 3, and the fluid supply toughening tube 8 together constitute the gun drill component, while the drill rod guide sleeve 4, the first annular end plate 5, the second annular end plate 6, and the telescopic joint tube 7 together constitute the guide assembly. The gun drill shank 2 is internally restricted in its movement within the base 1. The gun drill rod 3, extending from the base 1, is fixed to the side end of the gun drill shank 2. The drill rod guide sleeve 4 is sleeved on the outer side of the gun drill rod 3. The first annular end plate 5 is fixed to the outer side of the base 1, and the second annular end plate 6 is fixed to the outer side of the drill rod guide sleeve 4. Several telescopic joint tubes 7 connect the first annular end plate 5 and the second annular end plate 6. The fluid supply toughening tube 8 is embedded and fixed inside the gun drill rod 3. The outer side of the base 1 is equipped with an inlet protrusion 9 that facilitates the supply of coolant or cleaning fluid to one end of the supply toughening pipe 8.

[0021] In this embodiment, the outer end of the gun drill rod 3 is provided with a drill head 301, and the outer side of the gun drill rod 3 is provided with a spiral chip removal groove 302 near the drill head 301. The inner side of the gun drill rod 3 is provided with a liquid guiding cavity 303 near the other end of the liquid supply toughening tube 8, and a liquid guiding channel 304 is provided between the liquid guiding cavity 303 and the inclined surface of the drill head 301.

[0022] In this embodiment, a compression spring can be added to the outside of the narrow rod of the telescopic joint tube 7 as needed. The compression spring can be used to push the drill pipe guide sleeve 4 to automatically move to the outside of the spiral chip removal groove 302 when not in use.

[0023] In this embodiment, the axial length of the drill rod guide sleeve 4 and the axial length of the spiral chip removal groove 302 are matched. When one end of the drill rod guide sleeve 4 is aligned with the drill head, the groove of the spiral chip removal groove 302 away from the drill head 301 is exposed from the other end of the drill rod guide sleeve 4.

[0024] In this embodiment, the gun drill shank 2 includes a cylindrical shank body 201. One end of the cylindrical shank body 201 is provided with a snap connector 202, and the other end of the cylindrical shank body 201 is fixed to the gun drill rod 3. An axial liquid guide groove 204 and a radial liquid guide groove 203 are provided inside the cylindrical shank body 201. One end of the axial liquid guide groove 204 is connected to the radial liquid guide groove 203, and the other end of the axial liquid guide groove 204 is connected to the liquid supply toughening tube 8. The outer port of the radial liquid guide groove 203 extends to the outer surface of the cylindrical shank body 201.

[0025] In this embodiment, the outer diameter of the snap connector 202 and the outer diameter of the drill rod 3 are both smaller than the outer diameter of the cylindrical shank body 201.

[0026] In this embodiment, the base 1 has a first movable cavity 101 for restricting the cylindrical handle body 201, a second annular cavity 102 that cooperates with the snap connector 202, and a third movable cavity 103 that cooperates with the drill rod 3. The diameter of the first movable cavity 101 is larger than the outer diameter of the cylindrical handle body 201, and the inner wall of the first movable cavity 101 has a liquid inlet 104 that communicates with the liquid inlet protrusion 9.

[0027] In this embodiment, the drill pipe guide sleeve 4, the first annular end plate 5, the second annular end plate 6, and the telescopic joint tube 7 are all made of stainless steel.

[0028] In this embodiment, the base 1, the gun drill shank 2, and the gun drill rod 3 are made of alloy structural steel.

[0029] In this embodiment, the liquid supply toughening tube 8 is made of chromium-nickel-iron alloy.

[0030] The working process of this embodiment is as follows: Installation and Fixing: The base 1 has a first movable cavity 101, a second annular cavity 102, and a third movable cavity 103. The cylindrical shank body 201 of the gun drill shank 2 is placed in the first movable cavity 101. The snap-fit ​​connector 202 mates with the second annular cavity 102, and the gun drill rod 3 mates with the third movable cavity 103, thereby restricting and fixing the movement of the gun drill shank 2 and the gun drill rod 3 within the base 1. A drill rod guide sleeve 4 is fitted on the outside of the gun drill rod 3. A first annular end plate 5 is fixed to the outside of the base 1, and a second annular end plate 6 is fixed to the outside of the drill rod guide sleeve 4. Several telescopic joint tubes 7 are connected between the first annular end plate 5 and the second annular end plate 6.

[0031] Liquid delivery channels: An axial liquid guide groove 204 and a radial liquid guide groove 203 are provided inside the cylindrical shank body 201 of the drill shank 2. One end of the axial liquid guide groove 204 is connected to the radial liquid guide groove 203, and the other end is connected to the liquid supply toughening tube 8. The outer port of the radial liquid guide groove 203 extends to the outer surface of the cylindrical shank body 201. An inlet port 104 connected to the inlet protrusion 9 is provided on the inner wall of the first movable cavity 101 of the base 1. The inlet protrusion 9 facilitates the supply of coolant or cleaning fluid to one end of the liquid supply toughening tube 8. The coolant or cleaning fluid enters the radial liquid guide groove 203 through the inlet port 104, and then enters the liquid supply toughening tube 8 through the axial liquid guide groove 204.

[0032] Internal passage of drill pipe: A fluid guiding cavity 303 is provided inside the drill pipe 3 near the other end of the fluid supply and toughening tube 8. A fluid guiding channel 304 is opened between the fluid guiding cavity 303 and the inclined surface of the drill head 301. Coolant or cleaning fluid entering the fluid supply and toughening tube 8 can flow into the fluid guiding cavity 303, and then flow to the drill head 301 through the fluid guiding channel 304.

[0033] Cleaning process: A drill head 301 is installed at the outer end of the drill rod 3. A spiral chip removal groove 302 is opened on the outer side near the drill head 301. The axial length of the drill rod guide sleeve 4 matches the axial length of the spiral chip removal groove 302. When cleaning of the spiral chip removal groove 302 is required, the drill rod guide sleeve 4 is pushed so that one end is aligned with the drill head 301 and abuts against the plane to seal it. At this time, the groove opening of the spiral chip removal groove 302 away from the drill head 301 is exposed from the other end of the drill rod guide sleeve 4. Cleaning fluid is supplied to the supply toughening pipe 8 through the inlet convex pipe 9. The cleaning fluid flows to the drill head 301 through the above-mentioned channel and then flows out from the exposed groove opening of the spiral chip removal groove 302, realizing rapid cleaning of the spiral chip removal groove 302. During deep hole machining, the supply of coolant can cool the drilling part and ensure machining quality.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A deep hole gun drill that is easy to clean, characterized in that, The device includes a base, a gun drill shank, a gun drill rod, a drill rod guide sleeve, a first annular end plate, a second annular end plate, a telescopic joint tube, a fluid supply toughening tube, and a fluid inlet convex tube. The gun drill shank is internally restricted in its movement. A gun drill rod extending from the base is fixed to the side end of the gun drill shank. A drill rod guide sleeve is fitted on the outer side of the gun drill rod. A first annular end plate is fixed to the outer side of the base. A second annular end plate is fixed to the outer side of the drill rod guide sleeve. Several telescopic joint tubes are connected between the first and second annular end plates. A fluid supply toughening tube is embedded and fixed inside the gun drill rod. A fluid inlet convex tube is installed on the outer side of the base to facilitate the supply of coolant or cleaning fluid to one end of the fluid supply toughening tube. A drill bit is provided at the outer end of the gun drill rod. A spiral chip removal groove is formed on the outer side of the gun drill rod near the drill bit. A fluid guiding cavity is provided inside the gun drill rod near the other end of the fluid supply toughening tube. A fluid guiding channel is formed between the fluid guiding cavity and the inclined surface of the drill bit.

2. The deep hole gun drill that is easy to clean according to claim 1, characterized in that, The axial length of the drill rod guide sleeve is matched with the axial length of the spiral chip removal groove. When one end of the drill rod guide sleeve is aligned with the drill head, the groove of the spiral chip removal groove away from the drill head is exposed from the other end of the drill rod guide sleeve.

3. A deep hole gun drill that is easy to clean according to claim 2, characterized in that, The gun drill shank includes a cylindrical shank body. One end of the cylindrical shank body is provided with a snap-fit ​​connector, and the other end of the cylindrical shank body is fixed to the gun drill rod. The cylindrical shank body has an axial fluid guide groove and a radial fluid guide groove inside. One end of the axial fluid guide groove is connected to the radial fluid guide groove, and the other end of the axial fluid guide groove is connected to the fluid supply toughening tube. The outer port of the radial fluid guide groove extends to the outer surface of the cylindrical shank body.

4. A deep hole gun drill that is easy to clean according to claim 3, characterized in that, The outer diameter of the clamp connector and the outer diameter of the drill rod are both smaller than the outer diameter of the cylindrical shank body.

5. A deep hole gun drill that is easy to clean according to claim 4, characterized in that, The base has a first movable cavity for restricting the cylindrical handle body, a second annular cavity for engaging with the snap-fit ​​connector, and a third movable cavity for engaging with the drill rod of the gun drill. The diameter of the first movable cavity is larger than the outer diameter of the cylindrical handle body, and the inner wall of the first movable cavity has a liquid inlet that communicates with the liquid inlet protrusion.

6. A deep hole gun drill that is easy to clean according to claim 1, characterized in that, The drill pipe guide sleeve, the first annular end plate, the second annular end plate, and the telescopic joint tube are all made of stainless steel.

7. A deep hole gun drill that is easy to clean according to claim 1, characterized in that, The base, drill shank, and drill rod are made of alloy structural steel.

8. A deep hole gun drill that is easy to clean according to claim 1, characterized in that, The liquid supply toughening tube is made of chromium-nickel-iron alloy.

Images