High-stability deep hole machining drill bit

Abstract

The utility model discloses a high-stability deep hole machining drill bit which comprises a drilling rod, the inner wall of the drilling rod is connected with two symmetrical screws in a sliding mode, threads of the two screws are arranged reversely, the lower ends of the screws are fixedly connected with first limiting blocks, and the outer walls of the screws are connected with second limiting blocks in a threaded and sliding mode and located at the tops of the first limiting blocks. The outer wall of the second limiting block is rotationally connected with a rotating block, and the inner wall of the rotating block is in threaded connection with the outer wall of the screw. The drilling rod can slide on the screws, the drilling rod can be protected through a first limiting block and a second limiting block, meanwhile, the height of the second limiting block can be controlled by rotating a rotating block, and therefore the distance between the first limiting block and the second limiting block is adjusted to be matched with the drilling depth of the drilling rod, and meanwhile threads of the two screws are opposite, so that the drilling depth of the drilling rod is adjusted. Therefore, when the rotating blocks are rotated, the positions of the second limiting blocks can be adjusted by reversely rotating the two rotating blocks, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to deep hole machining drill bit technical field, concretely relates to a high stability deep hole machining drill bit. BACKGROUND

[0002] Drill bit is used to drill out through hole or blind hole on solid material, and can be used to enlarge the hole. Common drill bits mainly include twist drill, flat drill, center drill, deep hole drill and sleeve drill. In metal cutting process, hole drilling process accounts for about 40% to 50% of total cutting process, especially in aerospace and automobile manufacturing, and the production of drill bits accounts for about 60% of total tool production. Twist drill is one of the most common hole drilling tools, and also one of the tools with the largest loss in mechanical cutting process, and deep hole twist drill is used for deep hole machining with a ratio of drilling depth to hole diameter not less than 12.

[0003] The deep hole twist drill described in patent CN216966368U is connected by upper connecting rod and lower connecting rod, pushes the guide sleeve close to the workpiece surface, and uses the guide sleeve to guide and support the middle part of the drill bit body. When the guide sleeve guides the drill bit body, it can ensure that the drill bit body has no deviation in the axial direction, and when the drill bit body is too thin, the guide sleeve supports the middle part, and does not bend during processing, thereby effectively ensuring the accuracy of processing. Since the connecting ring is rotatably installed outside the clamping part, the guide sleeve does not rotate with the drill bit body, thereby greatly improving the stability and accuracy of thin deep hole machining, and greatly enhancing the safety of the drill bit. However, the height of the limiting guide sleeve is fixed, which limits the range of protection of the drill rod, and the protection range cannot be adjusted, which has poor flexibility. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a high-stability deep hole machining drill bit with the advantages of convenient protection of the drill bit.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high-stability deep hole machining drill bit, comprising a drill rod, the inner wall of the drill rod is slidably connected with two symmetrical screw rods, the threads of the two screw rods are oppositely arranged, the lower end of the screw rod is fixedly connected with a first limiting block, the outer wall of the screw rod and the top of the first limiting block are threadedly and slidably connected with a second limiting block, the outer wall of the second limiting block is rotatably connected with a rotating block, and the inner wall of the rotating block is threadedly connected with the outer wall of the screw rod.

[0006] Through the technical scheme, the drilling rod can slide on the screw rod, the first limiting block and the second limiting block can protect the drilling rod, the height of the second limiting block can be controlled through rotating the rotating block, the interval between the first limiting block and the second limiting block is adjusted, the drilling depth of the drilling rod is matched, and the positions of the second limiting blocks are adjusted through opposite rotation of the two rotating blocks when the rotating block is rotated, and operation is facilitated.

[0007] Preferably, the drilling rod comprises a drill rod, and a top seat is fixedly connected to the outer wall of the drill rod, and a through hole is formed in the inner wall of the top seat.

[0008] Through the technical scheme, the screw rod can be limited through the through hole, and the vertical movement of the drill rod is guaranteed.

[0009] Preferably, a liquid tank is fixedly connected to the outer wall of the drill rod, an inlet is communicated with the inner wall of the liquid tank, an outlet is formed in the inner wall of the drill rod and communicated with the inlet, and a fixed head is fixedly connected to the top end of the drill rod.

[0010] Through the technical scheme, the cooling liquid can be poured into the liquid tank, and the cooling liquid can be injected from the inlet and discharged from the outlet.

[0011] Preferably, the first limiting block comprises a first mounting seat, a first fixed column is fixedly connected to the outer wall of the first mounting seat, a plurality of first limiting wheels are rotatably connected to the inner wall of the first mounting seat, and a first inner groove is formed in the inner wall of the first mounting seat.

[0012] Through the technical scheme, the outer wall of the drill rod can be contacted by the first limiting wheels, and the drill rod can be limited.

[0013] Preferably, the second limiting block comprises a second mounting seat, a second fixed column is fixedly connected to the outer wall of the second mounting seat, a plurality of second limiting wheels are rotatably connected to the inner wall of the second mounting seat, a second inner groove is formed in the inner wall of the second mounting seat, and a limiting head is fixedly connected to the outer wall of the second mounting seat.

[0014] Through the technical scheme, the limiting head is used for rotating the mounting rotating block, and the second mounting seat can be moved on the screw rod when the rotating block is rotated.

[0015] Compared with the prior art, the drilling device has the beneficial effects that:

[0016] 1、The drilling rod can slide on the screw rod, the first limiting block and the second limiting block can protect the drilling rod, and the height of the second limiting block can be controlled by rotating the rotating block, so that the distance between the first limiting block and the second limiting block is adjusted, so that the depth of the drilling rod is matched, and the threads of the two screw rods are opposite, so that the two rotating blocks rotate in opposite directions when the rotating block is rotated, so that the position of the second limiting block is adjusted, and operation is facilitated.

[0017] 2、The screw rod is limited by the opening of the perforation, so that the vertical movement of the drilling rod is ensured, the cooling liquid is poured into the liquid tank, the cooling liquid is injected from the inlet, and then discharged from the outlet. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the main structure of the utility model;

[0019] Figure 2 It is a schematic view of the drilling rod structure of the utility model;

[0020] Figure 3 It is a schematic view of the first limiting block structure of the utility model;

[0021] Figure 4 It is a schematic view of the second limiting block structure of the utility model.

[0022] In the drawing: 1, drilling rod; 2, screw rod; 3, first limiting block; 4, second limiting block; 5, rotating block; 100, drilling rod; 101, top seat; 102, perforation; 103, liquid tank; 104, inlet; 105, outlet; 106, fixed head; 300, first mounting seat; 301, first fixed column; 302, first limiting wheel; 303, first inner groove; 400, second mounting seat; 401, second fixed column; 402, second limiting wheel; 403, first inner groove; 404, limiting head. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] Embodiment one:

[0025] Please refer to Figures 1-4The utility model provides a technical scheme: a high stability deep hole processing drill bit, including the drill rod 1, the inner wall sliding joint of drill rod 1 has two symmetrical screw rod 2, the thread of two screw rod 2 is opposite to set up, the low end fixed connection of screw rod 2 has first limit block 3, the outer wall of screw rod 2 and the top thread sliding joint of first limit block 3 has second limit block 4, the outer wall rotation connection of second limit block 4 has the block 5 of turning, the inner wall of block 5 and the outer wall screw connection of screw rod 2.

[0026] In the embodiment, the drill rod 1 can slide on the screw rod 2, the first limit block 3 and the second limit block 4 can protect the drill rod 1, and the height of the second limit block 4 can be controlled by rotating the rotating block 5, so that the distance between the first limit block 3 and the second limit block 4 is adjusted, the depth of the drill rod 1 is matched, and the threads of the two screw rods 2 are opposite, so that the two rotating blocks 5 are reversely rotated when the rotating block 5 is rotated, the position of the second limit block 4 is adjusted, and operation is facilitated.

[0027] Example two:

[0028] Please refer to Figure 2 On the basis of example one, the utility model provides a technical scheme: the drill rod 1 includes a drill rod 100, the outer wall of the drill rod 100 is fixedly connected with a top seat 101, the inner wall of the top seat 101 is provided with a through hole 102, the outer wall of the drill rod 100 is fixedly connected with a liquid tank 103, the inner wall of the liquid tank 103 is communicated with an inlet 104, the inner wall of the drill rod 100 is provided with an outlet 105 communicated with the inlet 104, and the top end of the drill rod 100 is fixedly connected with a fixed head 106.

[0029] In the embodiment, the through hole 102 is provided, the screw rod 2 is limited, the vertical movement of the drill rod 100 is guaranteed, the cooling liquid is poured into the liquid tank 103, the cooling liquid is injected from the inlet 104, and then is discharged from the outlet 105.

[0030] Example three:

[0031] Please refer to Figures 3-4 On the basis of example one and example two, the utility model provides a technical scheme: the first limit block 4 includes a first mounting seat 300, the outer wall of the first mounting seat 300 is fixedly connected with a first fixed column 301, the inner wall of the first mounting seat 300 is rotatably connected with a plurality of first limit wheels 302, the inner wall of the first mounting seat 300 is provided with a first inner groove 303, the second limit block 3 includes a second mounting seat 400, the outer wall of the second mounting seat 400 is fixedly connected with a second fixed column 401, the inner wall of the second mounting seat 400 is rotatably connected with a plurality of second limit wheels 402, the inner wall of the second mounting seat 400 is provided with a second inner groove 403, and the outer wall of the second mounting seat 400 is fixedly connected with a limit head 404.

[0032] In the embodiment, several first limiting wheels 302 contact the outer wall of the drill rod 100, so that the drill rod 100 can be limited, and the limiting head 404 is used for rotatingly installing the rotating block 5, so that when the rotating block 5 rotates, the second mounting seat 400 can be driven to move on the screw rod 2.

[0033] The working principle and use process of the utility model are as follows: the drilling rod 1 can slide on the screw rod 2, the first limiting block 3 and the second limiting block 4 can be used for protecting the drilling rod 1, the height of the second limiting block 4 can be controlled by rotating the rotating block 5, so that the interval between the first limiting block 3 and the second limiting block 4 is adjusted, the depth of drilling of the drilling rod 1 is matched, the threads of the two screw rods 2 are opposite, so that when the rotating block 5 is rotated, the two rotating blocks 5 are reversely rotated, the position of the second limiting block 4 is adjusted, operation is facilitated, the screw rod 2 is limited by the opening of the perforation 102, so that the vertical movement of the drill rod 100 can be ensured, the cooling liquid is poured into the liquid groove 103, the cooling liquid can be injected from the inlet 104 and then discharged from the outlet 105, several first limiting wheels 302 contact the outer wall of the drill rod 100, so that the drill rod 100 can be limited, the limiting head 404 is used for rotatingly installing the rotating block 5, so that when the rotating block 5 rotates, the second mounting seat 400 can be driven to move on the screw rod 2.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-stability deep hole machining drill bit comprising a drill rod (1), characterized in that: The inner wall of the drilling rod (1) is slidably connected with two symmetrical screw rods (2), the threads of the two screw rods (2) are oppositely arranged, the lower end of the screw rod (2) is fixedly connected with a first limiting block (3), the outer wall of the screw rod (2) and the top of the first limiting block (3) are threadedly and slidably connected with a second limiting block (4), the outer wall of the second limiting block (4) is rotatably connected with a rotating block (5), and the inner wall of the rotating block (5) is threadedly connected with the outer wall of the screw rod (2).

2. The high-stability deep hole machining drill bit of claim 1, wherein: The drilling rod (1) comprises a drill rod (100), and the outer wall of the drill rod (100) is fixedly connected with a top seat (101).

3. The high-stability deep hole machining drill bit of claim 2, wherein: The outer wall of the drill rod (100) is fixedly connected with a liquid groove (103), the inner wall of the liquid groove (103) is communicated with an inlet (104), the inner wall of the drill rod (100) is provided with an outlet (105) communicated with the inlet (104), and the top end of the drill rod (100) is fixedly connected with a fixed head (106).

4. The high-stability deep hole machining drill bit of claim 1, wherein: The first limiting block (3) comprises a first mounting seat (300), the outer wall of the first mounting seat (300) is fixedly connected with a first fixed column (301), the inner wall of the first mounting seat (300) is rotatably connected with a plurality of first limiting wheels (302), and the inner wall of the first mounting seat (300) is provided with a first inner groove (303).

5. The high-stability deep hole machining drill bit of claim 1, wherein: The second limiting block (4) comprises a second mounting seat (400), the outer wall of the second mounting seat (400) is fixedly connected with a second fixed column (401), the inner wall of the second mounting seat (400) is rotatably connected with a plurality of second limiting wheels (402), the inner wall of the second mounting seat (400) is provided with a second inner groove (403), and the outer wall of the second mounting seat (400) is fixedly connected with a limiting head (404).

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