Deep hole drill with stable connecting structure

Abstract

The utility model relates to the technical field of machining, in particular to a deep hole drill with a stable connecting structure, which comprises a drill bit and a deep hole rotating shaft, the left side and the right side of the top end of the outer side of the drill bit are respectively provided with a first clamping groove, and a connecting mechanism is arranged in the deep hole rotating shaft and comprises a limiting groove. The limiting grooves are formed in the positions, located on one sides of the two clamping grooves, in the deep hole rotating shaft, the two limiting grooves are internally connected with moving rods, inserting rods are arranged on the sides, close to the clamping grooves, of the moving rods, and the drill bit located at the bottom of the deep hole rotating shaft is sleeved with a fixing cylinder. Second clamping grooves are formed in the two sides of the inner wall of the fixing cylinder, third springs are installed on the inner walls of the sides, away from the drill bit, of the second clamping grooves, clamping blocks are connected to the other sides of the third springs, and connecting bases are arranged at the bottom end of the deep hole rotating shaft and one side of the fixing cylinder. Through the cooperation of the structure, the purpose of stable connection during installation of the drill bit is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a deep hole drill with a stable connection structure. Background Art

[0002] A deep hole drill is a drill specially used for processing deep holes. It can be divided into two types: external chip removal and internal chip removal. In the manufacturing industry, many parts need to have slender holes, such as fuel nozzles in automobile engines, hydraulic cylinders, cooling holes in molds, etc. Usually, the special structural design and cutting principle of deep hole drills are required to achieve processing.

[0003] However, the drill rod of the existing deep hole drill is slender and rigid, and is prone to bending, deflection or breakage during drilling. The drill bit needs to be replaced after a period of use. The traditional connection structure requires workers to use tools to disassemble, which is time-consuming and labor-intensive, reduces work efficiency, is not stable enough, and has a poor fixing effect. A deep hole drill with a stable connection structure is now provided to alleviate the above-mentioned problems. Summary of the invention

[0004] The utility model realizes the purpose of stable connection of the drill bit during installation by cooperating structures such as a connecting mechanism, a fixing cylinder, a clamping block, a connecting seat and a moving block so that the insert rod is clamped with the first clamping groove, the clamping block is clamped with the drill bit and the fixing cylinder is clamped to fix the drill bit.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A deep hole drill with a stable connection structure comprises a drill bit and a deep hole rotating shaft, and also comprises: first clamping grooves are provided on both sides of the left and right sides of the outer top of the drill bit, a connecting mechanism is arranged in the deep hole rotating shaft, the connecting mechanism comprises a limiting groove, the limiting grooves are provided inside the deep hole rotating shaft located on one side of the two clamping grooves, a moving rod is connected in the two limiting grooves, an insertion rod is provided on the side of the moving rod close to the clamping groove, a fixing cylinder is provided on the outer sleeve of the drill bit located at the bottom of the deep hole rotating shaft, second clamping grooves are provided on both sides of the inner wall of the fixing cylinder, a third spring is installed on the inner wall of the second clamping groove away from the drill bit, a clamping block is connected to the other side of the third spring, and a connecting seat is provided at the bottom end of the deep hole rotating shaft and one side of the fixing cylinder.

[0007] Preferably, the connecting mechanism also includes a second spring, the second spring is sleeved on the outside of the insertion rod in the limiting groove, a movable groove is provided on the inner wall surface of the limiting groove away from the drill bit, a connecting rod is connected to the side of the movable rod away from the drill bit, an annular groove is provided on the outer wall of the deep hole rotating shaft on the side of the limiting groove, two upper and lower pressing blocks are arranged in the annular groove, a first spring is abutted between the two pressing blocks, and a pull rod is connected to the side of the two pressing blocks away from the fixed cylinder.

[0008] Preferably, a first groove is provided on the outer wall of the connecting seat near the bottom end of the deep hole rotating shaft, a second groove is provided on the outer wall of the connecting seat near the fixed cylinder, a first sliding groove is provided on the inner wall of the first groove away from the bottom end of the deep hole rotating shaft, and a second sliding groove is provided on the inner wall of the second groove away from the fixed cylinder.

[0009] Preferably, a bidirectional screw rod is rotatably arranged in the first groove and the second groove, the top end of the bidirectional screw rod passes through the top of the connecting seat and is connected to a motor, and moving blocks are sleeved on the outer sides of the bidirectional screw rods located in the first groove and the second groove, and a sliding block is arranged on one side of the two moving blocks.

[0010] Preferably, the pressing block has an arc-shaped structure, and the outer surfaces of the two pressing blocks are both in contact with the inner wall of the annular groove.

[0011] Compared with the prior art, the gain effect of the utility model is:

[0012] 1. By setting a connecting mechanism, the two pressing blocks are pressed at the same time, the first spring contracts, and the push sleeve is pushed to drive the two pressing blocks to move. The two pressing blocks drive the connecting rod and the moving rod to move inward, and the moving rod drives the insertion rod to move until it is engaged with the first slot, thereby completing the connection and fixation of the drill bit. The two pressing blocks are released, and under the action of the first spring, the two pressing blocks are engaged with the annular groove, making the engagement of the insertion rod with the first slot more stable, thereby further achieving fixed support for the drill bit.

[0013] 2. By setting structures such as a fixed cylinder, a clamping block, a third spring, a connecting seat and a moving block, the fixed cylinder is installed outside the drill bit. Under the action of the third spring, the clamping block is clamped in the drill bit, and the bidirectional screw is driven by the motor to rotate. The bidirectional screw drives the two moving blocks to move toward each other in the first groove and the second groove respectively until the bottom surface of the deep hole shaft and the top of the fixed cylinder are fitted together, thereby completing the clamping and fixing of the deep hole shaft and the fixed cylinder, enhancing the stability of the drill bit, and avoiding the possibility of deviation or bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a stereogram of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of a half-section structure of an embodiment of the utility model;

[0016] Figure 3 It is an embodiment of the utility model Figure 2 Schematic diagram of the local structure of A;

[0017] Figure 4 It is an embodiment of the utility model Figure 2 Schematic diagram of the local structure of B;

[0018] Figure 5 It is an embodiment of the utility model Figure 2 Schematic diagram of the local structure of C.

[0019] In the figure: drill bit 1; first slot 101; deep hole shaft 2; connecting mechanism 3; limit slot 31; insertion rod 32; moving rod 33; moving slot 34; connecting rod 35; annular slot 36; pressing block 37; pull rod 38; first spring 39; second spring 310; fixing cylinder 4; second slot 401; connecting seat 5; first slide slot 501; second slide slot 502; first groove 503; second groove 504; block 6; third spring 7; slider 8; moving block 9; bidirectional screw 10; motor 11. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Example

[0022] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0023] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the utility model. In the description of the utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances; the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clearer understanding of the present invention.

[0025] See also Figure 1-5 A deep hole drill with a stable connection structure comprises a drill bit 1 and a deep hole rotating shaft 2. First slots 101 are provided on both sides of the left and right sides of the outer top of the drill bit 1. A connecting mechanism 3 is arranged inside the deep hole rotating shaft 2. The connecting mechanism 3 comprises a limiting slot 31. Limiting slots 31 are provided inside the deep hole rotating shaft 2 on one side of the two slots 101. Moving rods 33 are slidably connected inside the limiting slots 31. A plug rod 32 is fixedly provided on one side of the moving rod 33 close to the slot 101. The other end of the plug rod 32 extends into the slot 101, and the size of the plug rod 32 matches the size of the slot 101. A second spring 310 is sleeved on the outside of the plug rod 32 located in the limiting slot 31. The two ends of the second spring 310 are fixedly connected to the inner wall of the limiting slot 31 and the side of the moving rod 33 respectively.

[0026] See also Figure 1-5 The connecting mechanism 3 also includes a moving groove 34. A moving groove 34 is provided on the inner wall surface of the limiting groove 31 on the side away from the drill bit 1. A connecting rod 35 is fixedly connected to the side of the moving rod 33 away from the drill bit 1. The connecting rod 35 is slidably connected to the moving groove 34. An annular groove 36 is provided on the outer wall of the deep hole rotating shaft 2 on the side of the limiting groove 31. The annular groove 36 is connected to the moving groove 34. Pressing blocks 37 are symmetrically arranged inside the annular groove 36 along the up and down directions. The connecting rod 35 is slidably connected to the two pressing blocks 37 on the side away from the moving rod 33. A first spring 39 is in contact between the two pressing blocks 37. The two pressing blocks 37 are fixedly connected to the pull rod 38 on the side away from the fixed cylinder 4 to drive the two pressing blocks 37 to move.

[0027] Furthermore, the pressing block 37 is arc-shaped, so as to fit in the annular groove 36 , thereby fixing the insertion rod 32 and preventing the drill bit 1 from loosening during the drilling process.

[0028] In this embodiment, the two pressing blocks 37 are pressed simultaneously, so that the first spring 39 contracts, pushing the pull rod 38 to drive the two pressing blocks 37 to move, and the two pressing blocks 37 drive the connecting rod 35 to move inward, and the connecting rod 35 drives the moving rod 33 to slide in the limiting groove 31, and the moving rod 33 drives the insertion rod 32 to move in the first slot 101. At the same time, the second spring 310 is compressed until the insertion rod 32 is engaged with the first slot 101, and the two pressing blocks 37 are released. Under the action of the first spring 39, the two pressing blocks 37 are engaged with the annular groove 36 to complete the connection and fixation of the drill bit 1.

[0029] See also Figure 1-5 A fixing cylinder 4 is sleeved on the outer side of the drill bit 1 located at the bottom of the deep hole rotating shaft 2, and a second clamping groove 401 is opened in the middle of both sides of the inner wall of the fixing cylinder 4, and a clamping block 6 is slidably arranged inside the second clamping groove 401. A third spring 7 is fixedly installed on the inner wall of the second clamping groove 401 away from the drill bit 1, and the other side of the third spring 7 is fixedly connected to the side wall of the clamping block 6. The two clamping blocks 6 are engaged with the drill bit 1 on one side away from the third spring 7, which can enhance the stability of the drill bit 1 and avoid the problems of deviation or bending of the drill bit 1.

[0030] See also Figure 1-5 A connecting seat 5 is provided at the bottom end of the deep hole rotating shaft 2 and one side of the fixed cylinder 4, a first groove 503 is opened on the outer wall of the connecting seat 5 close to the bottom end of the deep hole rotating shaft 2, a second groove 504 is opened on the outer wall of the connecting seat 5 close to the fixed cylinder 4, a first sliding groove 501 is opened on the inner wall of the first groove 503 away from the bottom end of the deep hole rotating shaft 2, and a second sliding groove 502 is opened on the inner wall of the second groove 504 away from the fixed cylinder 4.

[0031] See also Figure 1-5 A bidirectional screw rod 10 is rotatably arranged inside the first groove 503 and the second groove 504. The bottom end of the bidirectional screw rod 10 is rotatably connected to the inner wall of the connecting seat 5. The top end of the bidirectional screw rod 10 passes through the top of the connecting seat 5 and is fixedly connected to the motor 11. The outer sides of the bidirectional screw rod 10 located in the first groove 503 and the second groove 504 are threadedly sleeved with moving blocks 9. One side of the two moving blocks 9 is respectively engaged with the bottom end of the deep hole rotating shaft 2 and the fixed cylinder 4. The other sides of the two moving blocks 9 are fixedly arranged with sliders 8. The two sliders 8 are respectively slidably connected to the first slide groove 501 and the second slide groove 502.

[0032] In this embodiment, the motor 11 is started to run, and the output end of the motor 11 drives the bidirectional screw 10 to rotate, and the bidirectional screw 10 drives the two moving blocks 9 to move toward each other in the first groove 503 and the second groove 504 respectively. At the same time, the two sliders 8 slide along the first slide groove 501 and the second slide groove 502 respectively until the bottom surface of the deep hole shaft 2 and the top of the fixed cylinder 4 are in contact with each other, thereby completing the clamping and fixation of the deep hole shaft 2 and the fixed cylinder 4.

[0033] Working principle: When in use, first insert the drill bit 1 into the deep hole shaft 2, then press the two pressing blocks 37 at the same time, the first spring 39 contracts, pushes the pull rod 38 to drive the two pressing blocks 37 to move, and the two pressing blocks 37 drive the connecting rod 35 and the moving rod 33 to move inward, and the moving rod 33 drives the insertion rod 32 to move in the first slot 101, and at the same time the second spring 310 is compressed until the insertion rod 32 is engaged with the first slot 101, and the two pressing blocks 37 are released. Under the action of the first spring 39, the two pressing blocks 37 are engaged with the annular groove 36 to complete the connection and fixation of the drill bit 1; when the drill bit 1 needs to be replaced, pull the pull rod 38 to drive the two pressing blocks 37 to move. The block 37 moves outward until the insertion rod 32 is disengaged from the first slot 101, thereby releasing the connection and fixation of the drill bit 1; the fixed cylinder 4 is then installed on the outside of the drill bit 1, and the clamping block 6 is moved, and under the action of the third spring 7, the clamping block 6 is clamped inside the drill bit 1; then the two moving blocks 9 are respectively inserted into the bottom end of the deep hole shaft 2 and the inside of the fixed cylinder 4, and the motor 11 is started to drive the bidirectional screw rod 10 to rotate, and the bidirectional screw rod 10 drives the two moving blocks 9 to move toward each other in the first groove 503 and the second groove 504, respectively, until the bottom surface of the deep hole shaft 2 and the top of the fixed cylinder 4 are in contact with each other, completing the clamping and fixation of the deep hole shaft 2 and the fixed cylinder 4, thereby achieving further fixed support for the drill bit 1.

Claims

1. A deep hole drill with a stable connection structure, comprising a drill bit (1) and a deep hole rotating shaft (2), characterized in that: The left and right sides of the outer top of the drill bit (1) are both provided with first slots (101); a connecting mechanism (3) is provided inside the deep hole rotating shaft (2); the connecting mechanism (3) comprises a limiting slot (31); the limiting slot (31) is provided inside the deep hole rotating shaft (2) on one side of the two limiting slots (101); a moving rod (33) is connected to the two limiting slots (31); and the moving rod (33) is provided on a side close to the slot (101). A plug rod (32) is provided, and a fixed tube (4) is provided on the outer shell of the drill bit (1) located at the bottom of the deep hole rotating shaft (2), and second clamping grooves (401) are provided on both sides of the inner wall of the fixed tube (4), and a third spring (7) is installed on the inner wall of the second clamping groove (401) away from the drill bit (1), and a clamping block (6) is connected to the other side of the third spring (7), and a connecting seat (5) is provided at the bottom end of the deep hole rotating shaft (2) and one side of the fixed tube (4).

2. A deep hole drill with a stable connection structure according to claim 1, characterized in that: The connecting mechanism (3) also includes a second spring (310), and the second spring (310) is sleeved on the outer side of the insertion rod (32) located in the limiting groove (31). A moving groove (34) is provided on the inner wall surface of the limiting groove (31) away from the drill bit (1). A connecting rod (35) is connected to the side of the moving rod (33) away from the drill bit (1). An annular groove (36) is provided on the outer wall of the deep hole shaft (2) located on the side of the limiting groove (31). Two upper and lower pressing blocks (37) are arranged in the annular groove (36). A first spring (39) is abutted between the two pressing blocks (37). A pull rod (38) is connected to the side of the two pressing blocks (37) away from the fixed cylinder (4).

3. The deep hole drill with a stable connection structure according to claim 1, characterized in that: A first groove (503) is provided on the outer wall of the connecting seat (5) close to the bottom end of the deep hole rotating shaft (2), a second groove (504) is provided on the outer wall of the connecting seat (5) close to the fixed cylinder (4), a first slide groove (501) is provided on the inner wall of the first groove (503) away from the bottom end of the deep hole rotating shaft (2), and a second slide groove (502) is provided on the inner wall of the second groove (504) away from the fixed cylinder (4).

4. The deep hole drill with a stable connection structure according to claim 3, characterized in that: A bidirectional screw rod (10) is rotatably arranged in the first groove (503) and the second groove (504); the top end of the bidirectional screw rod (10) passes through the top of the connecting seat (5) and is connected to a motor (11); a moving block (9) is sleeved on the outer side of the bidirectional screw rod (10) located in the first groove (503) and the second groove (504); and a sliding block (8) is arranged on one side of each of the two moving blocks (9).

5. The deep hole drill with a stable connection structure according to claim 2, characterized in that: The pressing block (37) has an arc-shaped structure, and the outer surfaces of the two pressing blocks (37) are both in contact with the inner wall of the annular groove (36).

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