Drill jamming prevention protection mechanism for drilling machine

Abstract

The drill jamming prevention protection mechanism comprises a positioning plate, the positioning plate is fixedly installed on a machine tool body, a transmission main shaft is rotationally installed at the bottom of one side of the machine tool body, the tail end of the transmission main shaft is fixedly connected with a torque sensor, and the two sides of the surface of the torque sensor are fixedly connected with limiting frames. Limiting grooves are formed in the two sides of the surface of the positioning plate, one side of the limiting frame is slidably installed in the limiting grooves, a safety coupler is fixedly installed at the tail end of the torque sensor, a drill chuck is fixedly connected to the tail end of the safety coupler, and a metal drill rod is installed at the bottom of the drill chuck in a clamped mode. The machine tool has the advantages that the torque force borne by the metal drill rod in the drilling process is monitored through the torque sensor, when the torque force of the metal drill rod is gradually increased before the metal drill rod is stuck and exceeds a preset value, the microcontroller can rapidly control the machine tool body to stop working, and therefore the phenomenon that the metal drill rod is stuck due to chip blockage is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drilling machine, concretely relates to a kind of anti-sticking drill protection mechanism for drilling machine. BACKGROUND

[0002] In the field of mechanical processing, drilling machine as a kind of widely used machine tool equipment, mainly used for the drilling operation to various workpieces. The working efficiency and processing quality of drilling machine are directly influenced by feed speed, cutting speed and cooling and chip removal conditions. Especially in the drilling process of high-precision or high-strength material, it is particularly important to control these parameters reasonably.

[0003] When drilling machine is drilled to workpiece, if operator sets feed speed too high, a series of problems can be caused. Too high feed speed can cause the generation of chip to increase sharply, and since the discharge speed cannot keep up with the generation speed, chip cannot be taken away from the narrow space between drill bit and hole wall in time, so as to block the chip removal channel. In this case, it is easy to produce the phenomenon of sticking drill, that is, drill rod cannot continue to rotate or advance and retreat normally. Sticking drill not only affects processing progress, more importantly, it can threaten the whole processing system: on the one hand, the suddenly increased resistance can cause drill rod to bear stress beyond its strength limit, and finally cause drill rod to break; on the other hand, sticking drill can also exert abnormal load on the transmission system of drilling machine, causing damage to transmission components such as gear, bearing, etc., and even causing problems such as motor overload and burning, which brings great economic loss and safety hazard.

[0004] For the problems in the related art, no effective solution has been proposed so far. CONTENT OF THE UTILITY MODEL

[0005] For the problems in the related art, the utility model provides an anti-sticking drill protection mechanism for drilling machine to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the specific technical scheme as follows:

[0007] An anti-sticking drill protection mechanism for drilling machine, comprising a positioning plate, the positioning plate is fixedly installed on the machine tool body, a transmission main shaft is rotatably installed on the bottom of one side of the machine tool body, a torque sensor is fixedly connected to the end of the transmission main shaft, limit racks are fixedly connected to the surface of both sides of the torque sensor, limit grooves are opened on the surface of both sides of the positioning plate, the limit racks are slidably installed in the limit grooves, a safety coupling is fixedly installed at the end of the torque sensor, a drill chuck is fixedly connected to the end of the safety coupling, and a metal drill rod is clamped and installed at the bottom of the drill chuck.

[0008] Further, in order to realize the auxiliary discharge of the cutting chip by the cooling liquid, the machine tool body is fixedly connected with a support plate on one side, a booster pump is fixedly installed on the surface of the support plate, a cooling liquid delivery pipe is fixedly installed on one side of the booster pump, and a liquid injection pipe is fixedly connected on the other side.

[0009] Further, in order to realize the control of the protection mechanism as a whole, a microcontroller is fixedly installed on one side of the surface of the machine tool body, and a multi-control switch is fixedly installed on one side of the microcontroller.

[0010] Further, in order to realize the free dismounting between the positioning plate and the machine tool body, threaded holes are formed on one side surface of the positioning plate and the machine tool body, and the positioning plate is fixedly installed on one side of the machine tool body through bolts.

[0011] Further, in order to realize that one end of the cooling liquid delivery pipe can move up and down along with the transmission main shaft, a limit ring is fixedly connected on one side of the torque sensor, and one side of the cooling liquid delivery pipe is clamped and installed in the limit ring.

[0012] Further, in order to facilitate the dismounting of the torque sensor on the transmission main shaft, a connecting groove is formed at the end of the transmission main shaft, a transmission block is arranged on the top of the torque sensor, and the transmission block is fixedly installed in the connecting groove through bolts.

[0013] Further, in order to realize the movement support of the machine tool body, universal wheels are rotatably installed on both sides of the bottom of the machine tool body.

[0014] The beneficial effects of the utility model are as follows: the torque force that the metal drill rod receives when drilling is monitored through the torque sensor, when the metal drill rod is gradually subjected to a larger torque force due to the cutting chip blockage, and when the torque force exceeds the preset value, the microcontroller can rapidly control the transmission main shaft of the machine tool body to stop rotating, thereby effectively preventing the occurrence of the drill jamming phenomenon; and when the metal drill rod suddenly receives a larger load, the safety coupling installed at the end of the torque sensor can protect the transmission system in the metal drill rod and the machine tool body through the self-slip mode, the protection mechanism timely responds to and handles the potential drill jamming condition, reduces the risk of the drill rod bearing extreme torque force, greatly reduces the possibility of the drill rod breaking. At the same time, the impact on the drill bed transmission system is also reduced, the service life of the equipment is prolonged, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creating labor under the premise.

[0016] Figure 1 It is a surface structure schematic view of a drill pipe sticking prevention protection mechanism for a drilling machine according to an embodiment of the present application.

[0017] Figure 2 It is a side view of a drill pipe sticking prevention protection mechanism for a drilling machine according to an embodiment of the present application.

[0018] Figure 3 It is Figure 2 an enlarged schematic view of position A in FIG.

[0019] Figure 4 It is a bottom view of a drill pipe sticking prevention protection mechanism for a drilling machine according to an embodiment of the present application.

[0020] Figure 5 It is Figure 4 an enlarged schematic view of position B in FIG.

[0021] In the figure:

[0022] 1, positioning plate; 2, machine tool body; 3, transmission main shaft; 4, torque sensor; 5, limiting frame; 6, limiting groove; 7, safety coupling; 8, drill chuck; 9, metal drill pipe; 10, support plate; 11, booster pump; 12, cooling liquid delivery pipe; 13, liquid injection pipe; 14, microcontroller; 15, multi-control switch; 16, threaded hole; 17, limiting ring; 18, connecting groove; 19, transmission block; 20, universal wheel. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] According to an embodiment of the present application, a drill pipe sticking prevention protection mechanism for a drilling machine is provided.

[0025] Embodiment one:

[0026] As Figures 1-5As shown, according to the utility model discloses a kind of anti-sticking drill protection mechanism for drilling rig, including L-shaped hard alloy material positioning plate 1, positioning plate 1 is fixedly installed on the side of machine tool body 2, the machine tool body 2 is vertical drilling machine tool;The bottom of one side of machine tool body 2 rotatably installs transmission main shaft 3, for the rotation of metal drill rod 9 provides power;The end of transmission main shaft 3 is fixedly connected with torque sensor 4, the torque sensor 4 is electromagnetic induction torque sensor, can real-time monitor the torque force received when metal drill rod 9 works;The surface both sides of torque sensor 4 are fixedly connected with limiting frame 5, the surface both sides of positioning plate 1 are provided with limiting groove 6, limiting frame 5 one side is slidably installed in limiting groove 6, for the rotation limiting of the stator housing of torque sensor 4;The end of torque sensor 4 is fixedly installed with safety coupling 7, when being subjected to greater torque force overload, inside can automatically slip, to limit the transmission of torque force;The end of safety coupling 7 is fixedly connected with drill chuck 8, the bottom of drill chuck 8 is clamped with metal drill rod 9, for driving metal drill rod 9 to rotate by machine tool body 2, processes the workpiece needing to be drilled.

[0027] As Figures 1-5 As shown, the side of machine tool body 2 is fixedly connected with support plate 10, the surface of support plate 10 is fixedly installed with booster pump 11, one side of booster pump 11 is fixedly installed with cooling liquid delivery pipe 12, the other side is fixedly connected with liquid injection pipe 13, absorbs cooling liquid and pressurizes through liquid injection pipe 13 by booster pump 11, and the pressurized cooling liquid is discharged through cooling liquid delivery pipe 12, when the cooling liquid with greater pressure is sprayed at drilling processing place, can efficiently cool drill rod and processing material, and can assist to flush out the drillings in drilling;The surface side of machine tool body 2 is fixedly installed with microcontroller 14, for receiving the monitoring signal of torque sensor 4, and controlling the transmission system of machine tool body 2 to be closed;The side of microcontroller 14 is fixedly installed with multi-control switch 15, for manually controlling the switch of each electrical element on machine tool body 2;The side surface of positioning plate 1 and machine tool body 2 is provided with threaded hole 16, and the positioning plate 1 is fixedly installed on one side of the machine tool body 2 by bolts, and the positioning plate 1 is installed and disassembled by screwing the bolt;The side of torque sensor 4 is fixedly connected with limiting ring 17, and the side of cooling liquid delivery pipe 12 is clamped in limiting ring 17, for realizing that one end of cooling liquid delivery pipe 12 can move up and down with transmission main shaft 3;The end of transmission main shaft 3 is provided with connecting groove 18, and the top of torque sensor 4 is provided with transmission block 19, and the transmission block 19 is fixedly installed in the connecting groove 18 by bolts, for facilitating the installation and disassembly of torque sensor 4 on transmission main shaft 3;The bottom of both sides of machine tool body 2 is rotatably installed with universal wheel 20, for moving support to machine tool body 2, to facilitate the change of work site of machine tool body 2.

[0028] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is explained in detail.

[0029] In summary, by means of the above technical scheme of the utility model, in actual use, the transmission main shaft 3 drives the rotor in the torque sensor 4, the safety coupling 7, the drill chuck 8 and the metal drill pipe 9 to rotate, so that the metal drill pipe 9 drills the workpiece to be processed, and the microcontroller 14 sets a threshold value for monitoring the torque sensor 4, when drilling, the torque force received by the metal drill pipe 9 is monitored by the torque sensor 4, when the metal drill pipe 9 is gradually subjected to a larger torque force due to chip jamming, and when the torque force exceeds the preset value, the microcontroller 14 can quickly control the transmission main shaft 3 of the machine tool body 2 to stop rotating, thereby effectively preventing the occurrence of the drill jamming phenomenon, and the safety coupling 7 installed at the end of the torque sensor 4 can protect the metal drill pipe 9 and the transmission system in the machine tool body 2 by slipping when the metal drill pipe 9 is suddenly subjected to a larger load.

[0030] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A sticking protection mechanism for a drilling rig, characterized in that, The utility model provides a kind of machine tool, including positioning plate (1), the positioning plate (1) is fixedly installed on machine tool body (2), one side bottom of the machine tool body (2) is rotatably installed with transmission main shaft (3), the end of the transmission main shaft (3) is fixedly connected with torque sensor (4), the surface both sides of the torque sensor (4) are fixedly connected with limiting frame (5), the surface both sides of the positioning plate (1) are limited with limiting groove (6), the limiting frame (5) one side is slidably installed in limiting groove (6), the end of the torque sensor (4) is fixedly installed with safety coupling (7), the end of the safety coupling (7) is fixedly connected with drill chuck (8), the bottom of the drill chuck (8) is clamped with metal drill pipe (9).

2. A pipe sticking prevention mechanism for a drilling rig as defined in claim 1, wherein, One side of the machine tool body (2) is fixedly connected with a support plate (10), a surface of the support plate (10) is fixedly installed with a booster pump (11), one side of the booster pump (11) is fixedly installed with a cooling liquid delivery pipe (12), and the other side is fixedly connected with a liquid injection pipe (13).

3. A pipe sticking prevention mechanism for a drilling rig as defined in claim 1, wherein A microcontroller (14) is fixedly installed on one side of the machine tool body (2), and a multi-control switch (15) is fixedly installed on one side of the microcontroller (14).

4. A pipe sticking prevention mechanism for a drilling rig as defined in claim 1, wherein Threaded holes (16) are formed on one side surfaces of the positioning plate (1) and the machine tool body (2), and the positioning plate (1) is fixedly installed on one side of the machine tool body (2) by bolts.

5. A pipe sticking prevention mechanism for a drilling rig as defined in claim 2 wherein, A limiting ring (17) is fixedly connected to one side of the torque sensor (4), and the cooling liquid delivery pipe (12) is clamped and installed in the limiting ring (17).

6. A pipe sticking prevention mechanism for a drilling rig as defined in claim 1, wherein, A connecting groove (18) is formed at the end of the transmission main shaft (3), a transmission block (19) is provided at the top of the torque sensor (4), and the transmission block (19) is fixedly installed in the connecting groove (18) by bolts.

7. A pipe sticking prevention mechanism for a drilling rig as defined in claim 1, wherein Universal wheels (20) are rotatably installed on both sides of the bottom of the machine tool body (2).

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