Ball head gun drill

Abstract

The utility model relates to the technical field of gun drills, and discloses a ball head gun drill which comprises a hemispherical drill bit, a rotating rod is arranged on the outer surface of the hemispherical drill bit, a water passing groove is formed in the outer surface of the rotating rod, and a discharging threaded groove is formed in the outer surface of the rotating rod. When a semispherical drill bit and a rotating rod rotate and advance into a drilling material and drilling cuttings are clamped in a discharging threaded groove, water and the drilling cuttings cannot be discharged, at the moment, the water in a water passing groove continuously pressurizes the drilling position, so that the strong pressure in a closed space is increased, a limiting telescopic cylinder does inward shrinkage motion, a touch plate also synchronously descends to extrude a transmission circular plate, and the drilling material is discharged. According to the drilling machine, the threaded ring in the sliding groove in the transmission circular plate is extruded to move forwards, and the threaded ring is matched with the groove ring of the discharging threaded groove, so that the threaded ring can poke drilling cuttings blocked in the discharging threaded groove, the stuck cuttings are broken through, and the problem that the drilling cuttings are blocked and cannot be discharged is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gun drills, in particular to a ball head gun drill. Background Art

[0002] Deep hole processing is a major problem in the field of alloy material processing. Due to the high strength and good toughness of alloy materials, stronger cutting force is required when drilling deep holes. For this reason, gun drilling was born.

[0003] According to a disclosed gun drill (publication number: CN204818171U), the above application includes a drill rod and a drill bit connected to one end of the drill rod, and the drill rod has a support protrusion extending radially. When the gun drill drills a deep hole, the support protrusion on the drill rod can be supported on the inner wall of the hole, so that the drill rod has a support point in the hole to support the drill rod, avoid bending or vibration of the drill rod under the action of a large axial force in the hole, improve drilling processing efficiency and processing accuracy, and avoid chipping or breaking of the drill bit.

[0004] However, although the above equipment can avoid chipping or breaking of the drill bit during actual use, when cutting deep holes, the drilling depth is too deep, which will cause the drill chips to get stuck in the discharge chute, and there is no way to clear the chips, so the drilling work is stopped. In view of this, we propose a ball head gun drill. Utility Model Content

[0005] The utility model aims to provide a ball-end gun drill to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ball-end gun drill comprises a hemispherical drill bit, the outer surface of the hemispherical drill bit is provided with a rotating rod, the outer surface of the rotating rod is provided with a water groove, the outer surface of the rotating rod is provided with a discharge thread groove, the outer surface of the rotating rod is provided with an anti-chip blocking component, the anti-chip blocking component comprises an elastic telescopic plate, the outer surface of the rotating rod is provided with an elastic telescopic plate, the outer surface of the elastic telescopic plate is provided with a transmission circular plate, the outer surface of the transmission circular plate is provided with a slide groove, the outer surface of the slide groove is slidably connected with a thread ring, the outer surface of the thread ring is movably connected with the discharge thread groove, the outer surface of the rotating rod is provided with a limiting telescopic cylinder, the outer surface of the limiting telescopic cylinder is fixedly connected with a touch plate, the outer surface of the touch plate is movably connected with the transmission circular plate, the outer surface of the rotating rod is fixedly connected with a fixed pile, and one end of the fixed pile is fixedly connected with the hemispherical drill bit.

[0007] Preferably, the number of the fixing piles is three groups, and the three groups of fixing piles are arranged in a triangular position on the outer surface of the rotating rod, so that the triangular fixing position is more stable.

[0008] Preferably, the number of turns of the thread ring is matched with the number of turns of the discharge thread groove, so that when the thread ring is moved under force and compression, it can poke the drilled waste on the discharge thread groove.

[0009] Preferably, the path of the slide groove is one-quarter of the number of turns of the rotating rod, so that when the transmission circular plate descends, the threaded ring is squeezed by force to rotate forward with a small float.

[0010] Preferably, the outer surface of the threaded ring is provided with a floating assembly, and the floating assembly includes a fixed body, the outer surface of the threaded ring is fixedly connected to the fixed body, and the outer surface of the fixed body is provided with spikes.

[0011] Preferably, the number of the swaying and floating components is several, and the several swaying and floating components are evenly distributed on the outer surface of the thread ring, so that when the swaying and floating components come into contact with drill cuttings and water, they can be discharged from the discharge thread groove more smoothly.

[0012] Compared with the prior art, the utility model provides a ball head gun drill, which has the following beneficial effects:

[0013] 1. When drilling deep holes in daily life, the hemispherical drill bit and the rotating rod rotate forward to drill into the material. When drilling too deep, drill cuttings are stuck in the discharge thread groove, and water and drill cuttings cannot be discharged. At this time, the water in the water tank continuously pressurizes the drilling position, so that the strong pressure in its closed space increases, so that the limit telescopic cylinder retracts inward, and the touch plate also drops synchronously to squeeze the transmission circular plate, so that the thread ring in the slide groove of the transmission circular plate is squeezed and moved forward. Because the thread ring is adapted to the groove ring of the discharge thread groove, the thread ring can poke the drill cuttings blocked in the discharge thread groove, so that the stuck chips can be cleared, solving the problem of drill cuttings being stuck and unable to be discharged.

[0014] 2. When drilling deep holes in a daily manner, the floating assembly on the threaded ring of the ball-end gun drill will operate synchronously. Whether before chips get stuck or when dealing with chip jams, when the chips and water pass through the floating assembly, the spikes will touch the chips and water in contact, causing the chip discharge from the threaded groove to be smoother and more stable, thereby increasing the function of discharging chips more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the anti-blocking chip assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the disassembly of the anti-chip blocking component structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the disassembly of the anti-chip blocking component structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the swaying and floating assembly of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the floating assembly of the utility model.

[0021] In the figure: 1. Hemispherical drill bit; 2. Rotating rod; 3. Water trough; 4. Discharge thread groove; 5. Anti-chip blocking assembly; 501. Elastic telescopic plate; 502. Transmission circular plate; 503. Slide groove; 504. Thread ring; 505. Limit telescopic cylinder; 506. Fixed pile; 507. Touch plate; 6. Floating assembly; 601. Fixed body; 602. Spike. DETAILED DESCRIPTION

[0022] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a ball-end gun drill, comprising a hemispherical drill bit 1, which can perform rotational cutting on the material it contacts when it rotates forward, so that the front metal surface of the drilling is a spherical surface, and the outer surface of the hemispherical drill bit 1 is provided with a rotating rod 2, which can drive the hemispherical drill bit 1 to rotate, and the outer surface of the rotating rod 2 is provided with a water groove 3, in which water will flow to the drilling place for discharge, and the outer surface of the rotating rod 2 is provided with a discharge thread groove 4, which facilitates the discharge of drill cuttings and water, and the outer surface of the rotating rod 2 is provided with an anti-blocking chip component 5, which includes an elastic telescopic plate 501, which will drop when it is squeezed by force and will rise again when the squeezing force is lost, and the outer surface of the rotating rod 2 is provided with an elastic telescopic plate 501, and the outer surface of the elastic telescopic plate 501 is provided with a transmission circular plate 502, which can be squeezed over a larger area.

[0023] Furthermore, a slide groove 503 is provided on the outer surface of the transmission circular plate 502, and a threaded ring 504 is slidably connected to the outer surface of the slide groove 503. When the threaded ring 504 is squeezed, it will perform a small range of rotational forward motion along the discharge thread groove 4, so that the threaded ring 504 can run in the slide groove 503, and the outer surface of the threaded ring 504 is movably connected to the discharge thread groove 4. A limiting telescopic cylinder 505 is provided on the outer surface of the rotating rod 2. When the limiting telescopic cylinder 505 is pressurized, the upper part will shrink, and the outer surface of the limiting telescopic cylinder 505 is fixedly connected to a touch plate 507, which will synchronously perform a descending operation with the limiting telescopic cylinder 505. The outer surface of the touch plate 507 is movably connected to the transmission circular plate 502, and the outer surface of the rotating rod 2 is fixedly connected to a fixed pile 506, and one end of the fixed pile 506 is fixedly connected to a hemispherical drill bit 1.

[0024] In one embodiment of the present invention, the number of fixed piles 506 is three groups, and the three groups of fixed piles 506 are arranged in a triangular position on the outer surface of the rotating rod 2, so that the triangular fixed position is more stable, and the number of turns of the thread ring 504 is adapted to the number of turns of the discharge thread groove 4, so that the thread ring 504 can poke the drilled waste on the discharge thread groove 4 when it is pressed and moved, and the path of the slide groove 503 is one-fourth of the number of turns of the rotating rod 2, so that when the transmission circular plate 502 descends, The thread ring 504 is squeezed by force to rotate and move forward with a small float. The outer surface of the thread ring 504 is provided with a swaying float component 6, and the swaying float component 6 includes a fixed body 601. The outer surface of the thread ring 504 is fixedly connected to the fixed body 601, and the outer surface of the fixed body 601 is provided with spikes 602. There are several swaying float components 6, and the several swaying float components 6 are evenly distributed on the outer surface of the thread ring 504, so that when the swaying float component 6 contacts the drill cuttings and water, it can discharge them more smoothly from the discharge thread groove 4.

[0025] In addition, in order to solve the problem that the drilling depth is too deep, the drill cuttings are stuck in the discharge chute, and there is no method to remove the cuttings, so that the drilling work is stopped, in the utility model, when in use, in the daily deep hole drilling operation, the hemispherical drill bit 1 and the rotating rod 2 rotate forward to drill into the material. When the drilling is too deep, the drill cuttings are stuck in the discharge thread groove 4, and the water and the drill cuttings cannot be discharged. At this time, the water in the water trough 3 is continuously pressurized to the drilling place, so that the strong pressure in its closed space is increased, so that the limiting telescopic cylinder 505 retracts, and the touch plate 507 also drops synchronously to squeeze the transmission circular plate 502, so that the thread in the slide groove 503 on the transmission circular plate 502 is pressed. The grooved ring 504 is operated to squeeze forward. Because the threaded ring 504 is adapted to the groove ring of the discharge thread groove 4, the threaded ring 504 can poke the drill cuttings blocked in the discharge thread groove 4, so that the stuck chips can be cleared, solving the problem of drill cuttings being stuck and unable to be discharged. In daily deep hole drilling, the shaking and floating component 6 on the threaded ring 504 will operate synchronously. No matter before the chips are stuck or when dealing with the chip jam problem, when the drill cuttings and water enter the shaking and floating component 6, the spikes 602 will touch them, so that the contacted drill cuttings and water are triggered, making the discharge thread groove more unobstructed and stable when discharging chips, and more stably increasing the function of removing drill cuttings.

[0026] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A ball-end gun drill, comprising a hemispherical drill bit (1), the outer surface of the hemispherical drill bit (1) is provided with a rotating rod (2), the outer surface of the rotating rod (2) is provided with a water groove (3), the outer surface of the rotating rod (2) is provided with a discharge thread groove (4), characterized in that: The outer surface of the rotating rod (2) is provided with an anti-chip blocking component (5), and the anti-chip blocking component (5) comprises: An elastic telescopic plate (501) is provided on the outer surface of the rotating rod (2), a transmission circular plate (502) is provided on the outer surface of the elastic telescopic plate (501), a sliding groove (503) is provided on the outer surface of the transmission circular plate (502), a threaded ring (504) is slidably connected to the outer surface of the sliding groove (503), and a discharge threaded groove (4) is movably connected to the outer surface of the threaded ring (504), a limited telescopic cylinder (505) is provided on the outer surface of the rotating rod (2), a touch plate (507) is fixedly connected to the outer surface of the limited telescopic cylinder (505), and the transmission circular plate (502) is movably connected to the outer surface of the touch plate (507), and a fixed pile (506) is fixedly connected to the outer surface of the rotating rod (2), and one end of the fixed pile (506) is fixedly connected to a hemispherical drill bit (1).

2. A ball-end gun drill according to claim 1, characterized in that: The number of the fixed piles (506) provided is three groups, and the three groups of fixed piles (506) are arranged in a triangular position and distributed on the outer surface of the rotating rod (2).

3. A ball-end gun drill according to claim 1, characterized in that: The number of turns of the thread ring (504) matches the number of turns of the discharge thread groove (4).

4. A ball-end gun drill according to claim 1, characterized in that: The path of the slide groove (503) is one quarter of the number of turns of the rotating rod (2).

5. The ball-end gun drill according to claim 1, characterized in that: The outer surface of the threaded ring (504) is provided with a floating assembly (6), and the floating assembly (6) comprises a fixed body (601). The outer surface of the threaded ring (504) is fixedly connected to the fixed body (601), and the outer surface of the fixed body (601) is provided with spikes (602).

6. A ball-end gun drill according to claim 5, characterized in that: The number of the floating components (6) is several, and the several floating components (6) are evenly distributed on the outer surface of the threaded ring (504).

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