KR100813675B1 - Hole local drilling machine - Google Patents

Abstract

A hole local drilling machine is provided to cut more than two holes at once and improve preciseness of cutting by linearly transferring a base having a rotation shaft along transfer guides. A hole local drilling machine comprises a base(10), a driving motor(20), a cutting part(30), a transfer part(40), and a fixing part(60). The cutting part consists of a driven shaft, a rotation shaft(32), a driving pulley(33), a driven pulley(34), a first gear(35), a second gear(36), and a cutting tool. The rotation shaft, whose upper part rotate in the base to be projected to the upper part of the base, is separated from the driven shaft at a predetermined distance. The transfer part includes plural transfer guides(41) penetrating the base, upper/lower transfer brackets(42,43), a transfer lid(47), and a transfer handle(48). The transfer lid having a screw thread, whose lower end rotates in the lower transfer bracket, combined with the base to penetrate through the upper transfer bracket. The fixing part has an upper fixing frame(61), a fixing bolt, a fixing guide(68), a lower fixing frame(63), and a fixing handle(69).

Description

Hole Local Drilling Machine

1 is a perspective view of a hole field cutting machine according to the present invention.

Figure 2 is an exploded perspective view of a hole cutting machine in accordance with the present invention.

Figure 3 is a cross-sectional view showing a coupling state of the hole on-site cutting machine according to the present invention.

4 is a cross-sectional view for explaining the operation of the hole on-site cutting machine according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: base 20: drive motor

30: cutting part 31: driven shaft

32: rotating shaft 33: drive pulley

34: driven pulley 35,36: first and second gear

40: transfer unit 41: transfer guide

42,43: upper and lower transfer bracket 47: transfer lead

48: transfer handle 60: fixed part

61,62,63: upper, middle and lower fixing frames

67: fixing bolt 68: fixing guide

69: fixed handle 80: workpiece

100: hole cutting machine

The present invention relates to a hole in situ cutting machine. More particularly, the present invention relates to a hole field cutting machine capable of forming a hole or expanding a damaged hole without dismantling the device in a state where the existing device is installed.

Generally, the hole cutting equipment includes a portable manual drill and an electric drill, and a drilling machine used in a factory.

The portable drill is not easy to work in a place with a narrow working space and poor working posture, and it is impossible to precisely process it.In order to process a large number of holes even in a favorable working condition, it is possible to maintain the same precision as a long working time. It is difficult. In addition, since the portable drill is to be held by the operator directly in hand, only a small diameter of the hole that can be processed is possible to work.

Drilling machines are difficult to mount or install for use in drilling purposes because of the machine's own geometry. In addition, due to the volume and weight of the machine itself, it is difficult to use a narrow space movement, and when there are many holes to be processed, it is difficult to precisely process the work site.

Electrostatic precipitator is composed of 4 stages, and each stage is equipped with 384 [192 × 2 (upper and lower)] dust collectors, each collecting plate has one rapping beam and the lepping beam Rapping Pieces are fastened with two bolts.

The chase device of the electrostatic precipitator applies a high voltage of DC 30 ~ 70㎸ to the dust collector and the discharge electrode and passes the dust in the electric field so that the dust is attracted and attached to the dust collector with the positive pole. When the rotating hammer hits the lepping piece, the dust attached to the dust collecting plate is dropped by the impact force.The bolt hole of the lepping beam, which fastens the lepping piece with the long-term use, is severely damaged and the impact force is relaxed by the lapping piece relaxation. Insufficient transmission to the dust collecting plate caused a decrease in dust collection efficiency.

The dust collecting plate is 4.2m wide and 6m long, and it cannot be partially disassembled and dismantled. The distance between the dust collecting plates is 30cm based on the center, and it is impossible for the worker to work from the side. 384 × 4 (number of bolt holes / wrapping pieces)] was impossible.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to provide a hole field cutting machine that can form a hole or enlarge a damaged hole without dismantling the device in the existing device installed state It is.

Another object of the present invention is to provide a hole cutting machine capable of precise hole cutting at a place where it is difficult to maintain a posture for working with a power tool or a hand tool due to a narrow working space for cutting a hole.

Another object of the present invention is to provide a hole field cutting machine capable of cutting two or more holes in one operation.

Hole field cutting machine of the present invention for achieving the above object is a base; A driving motor coupled to one side of the base; A driven shaft spaced apart from the drive motor by a predetermined distance and rotatably coupled to the base, a rotating shaft spaced apart from the driven shaft by a predetermined distance and rotatably coupled to the base such that an upper portion protrudes a predetermined length to an upper surface of the base; A drive pulley coupled to the drive motor, a driven pulley connected by the drive pulley and a belt and coupled to the driven shaft, a first gear coupled to the driven shaft to be positioned below the driven pulley, and the rotating shaft A cutting part coupled to an upper part of the cutting part including a second gear engaged with the first gear and a cutting tool coupled to a lower part of the rotating shaft; A plurality of transfer guides slidably coupled through the base, upper and lower transfer brackets coupled to both ends of the transfer guide, and threads formed on an outer circumferential surface thereof, and threaded to the base through the upper transfer bracket, A transfer unit including a transfer lead rotatably coupled to the lower transfer bracket and a transfer handle coupled to an upper end of the transfer lead; And an upper fixing frame coupled to the lower conveying bracket of the conveying part and formed with a work hole into which the cutting tool is inserted at one side, and a fixing bolt hole and a plurality of fixing guide holes formed at the other side, and inserted into and fixed to the fixing bolt hole. Fixed bolts, fixed guides inserted into and fixed to the fixing guide holes, and work holes in which the cutting tool is inserted at one side of the upper fixed frame and formed at one side thereof, and fixed bolt holes and a plurality of fixed guides on the other side thereof. And a fixing part including a fixing handle for fixing a workpiece between the upper and lower fixing frames, the lower fixing frame having a hole formed therein and the lower fixing frame.

In this case, the fixing unit may further include an intermediate frame installed between the upper and lower fixing frames.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a hole cutting machine according to the present invention, Figure 2 is an exploded perspective view of a hole cutting machine according to the invention, Figure 3 is a cross-sectional view showing a coupling state of the hole cutting machine according to the present invention. 4 is a cross-sectional view for explaining the operation of the hole on-site cutting machine according to the present invention.

1 and 2, the on-site cutting machine 100 according to the present invention is to perform a hole cutting operation without separating and dismantling the device in the state in which the device is installed, the base 10 and the driving motor ( 20), the cutting unit 30, the transfer unit 40 and the fixing portion 60.

The base 10 is formed in a plate shape having a predetermined width, and the first coupling hole 11 to which the driving motor 20 is coupled to one side is formed, and both sides of the first coupling hole 11 are formed. A pair of guide holes 12 may be formed, and on the other side, second and third coupling holes 13 and 14 to which the driving unit 30 is coupled are formed. In addition, the other side of the first coupling hole 11 has a fastening hole 16 and a plurality of transfer guide holes 17 through which the following transfer part 40 is coupled.

In this case, the first coupling hole 11 and the guide hole 12 may be formed in a slot shape so that the driving motor 20 can move a predetermined distance. In addition, the second coupling hole 13 is formed to be spaced apart a predetermined distance in the longitudinal direction of the first coupling hole 12, the third coupling hole 14 is formed in a pair and the first and second coupling holes 11 , 12).

On the other hand, the internal thread portion is formed inside the fastening hole 15 and the reinforcing nut 17 may be coupled to both sides of the fastening hole 15 to extend the female thread portion. In addition, the transfer guide hole 16 may be distributed in a rectangular shape around the fastening hole 15. In this case, the shape of the thread may be square or circular, for example.

The driving motor 20 is coupled to the bottom surface of the base 10 so that the shaft passes through the first coupling hole 11. In this case, the driving motor 20 is fastened by the base 10 and the bolt 21 through the guide hole 12. Such a drive motor 20 may be a DC motor having a good response to the load fluctuation.

The cutting part 30 is connected to the driving motor 20 and is used to cut a hole in the workpiece 80 by using the rotational force of the driving motor 20. The driven shaft 31, the rotating shaft 32, and the driving pulley ( Pulley) 33, driven pulley 34, first and second gears 35 and 36, and cutting tool 37.

The driven shaft 31 is rotatably coupled to the second coupling hole 13 formed in the base 10. In addition, the outer peripheral surface of the driven shaft 31 is formed to be stepped to have a different diameter, the key groove may be formed on one side of each stepped surface. At this time, the driven shaft 31 may be coupled to the second coupling hole 13 by embedding the bearing (39).

The rotating shaft 32 may be provided as a pair and rotatably coupled to the third coupling hole 14 formed in the base 10. In addition, the lower end is formed in a structure that can be coupled to the cutting tool 37. At this time, the rotating shaft 32 is coupled to the third coupling hole 13 in the bearing 39 so that the upper portion protrudes to the upper surface of the base 10, the key groove is formed on one side of the upper portion protruding to the upper surface of the base .

The driving pulley 33 has at least one belt groove formed on the outer circumferential surface thereof and is coupled to the shaft of the driving motor 20. At this time, the belt groove may be formed to correspond to the general V belt.

The driven pulley 34 has a belt groove corresponding to the belt groove of the driving pulley 33 on its outer circumferential surface. In addition, it is coupled by a key to the stepped upper portion of the driven shaft 34, it is connected to the drive pulley 33 and the belt 38.

On the other hand, in another embodiment of the present invention, the diameter of each belt groove formed in the drive pulley 33 and the driven pulley 31 may be formed differently. For example, the diameter of the belt groove may be formed in the driving pulley 33 from the lower portion to the upper portion, and the driven pulley 34 may have a larger diameter of the belt groove in the lower portion from the upper portion to the upper portion. Accordingly, the rotational speed of the driving motor 20 transmitted to the driven shaft 31 can be adjusted differently.

The first gear 35 is coupled to the stepped lower portion of the driven shaft 31 to be positioned below the driven pulley 34, and the second gear 36 is provided in pairs and engaged with the first gear 35. It is coupled to the upper portion of the rotating shaft 32 protruding to the upper surface of the base 10 so as to.

The cutting tool 37 cuts a hole directly in the workpiece 80 and is coupled to the lower end of the rotating shaft 32. In this case, the cutting tool 37 may be, for example, a drill or a hole cutter, and in the case of a drill, the cutting tool 37 may be fixed to a chuck (not shown) and coupled to the rotating shaft 32.

In the exemplary embodiment of the present invention, the rotating shaft 32 is described as an example, but three or more rotating shafts 32 are possible.

The transfer part 40 is coupled to the other side of the base 10 and is used to transfer the base 10 in the up and down directions, and includes a plurality of transfer guides 41, upper and lower transfer brackets 42 and 43, Consists of a transfer lead 47 and a transfer handle 48.

The transfer guide 41 is formed in a circumferential shape having a predetermined length and is inserted into and coupled to the transfer guide hole 16 formed in the base 10. At this time, between the transfer guide 41 and the transfer guide hole 16, a bush (50) to reduce the friction force and to facilitate the sliding may be embedded therein. The transfer guide 41 is preferably provided with four.

The upper and lower conveying brackets 42 and 43 are each formed in a rectangular plate shape, and a first through hole 44 is formed in the center and a second through hole 45 is formed in the corner portion. The upper and lower transfer brackets 42 and 43 are firmly coupled to the upper and lower ends of the transfer guide 41 by fixing bolts 46, respectively.

The feed lead 47 is threaded along the outer circumferential surface thereof and is screwed into the fastening hole 15 formed in the base 10 through the first through hole 44 of the upper transfer bracket 42. In addition, the lower end portion of the transfer lead 47 is inserted into the first through hole 44 of the lower transfer bracket 43, and a home key (not shown) is installed to prevent separation. The thread shape formed on the outer circumferential surface of the transfer lead 47 is formed to correspond to the thread thread formed in the fastening hole 15.

The transfer handle 48 is for rotating the transfer lead 47 and is fixedly coupled to the upper end of the transfer lead 47. In addition, the handle 49 may be installed on one side to easily rotate the transfer handle 48.

The fixing part 60 is for fixing the workpiece 80 to be hole-cut by the cutting tool 37, and the upper and lower fixing frames 61 and 62, the fixing bolt 67, and the fixing guide 68 ) And a fixed handle 69.

The upper fixing frame 61 has a rectangular plate shape, a work hole 64 into which the cutting tool 37 is inserted to one side is formed, and on the other side, the fixing bolt hole 65 and the plurality of fixing guide holes 66 are formed. It is formed, and is coupled to the lower transfer bracket 43 of the transfer unit (40).

In addition, the lower fixing frame 62 may be formed in the same shape as the upper fixing frame 61, the work hole 64 and the fixing bolt hole 65 and a plurality of fixing in the same position as the upper fixing frame 61 A guide hole 66 is formed and is coupled to the lower portion of the upper fixing frame 61.

Meanwhile, an intermediate fixing frame 63 may be further installed between the upper and lower fixing frames 61 and 62 to fix two workpieces 80 at a time. The intermediate fixing frame 63 has a work hole 64 and a fixing bolt hole 65 and a plurality of fixing guide holes 66 are formed at the same position as the upper and lower fixing frames 61 and 62. The fixing groove may be formed in the.

The fixing bolt 67 is formed with a screw portion at the bottom of the outer circumferential surface and is fixed by being inserted into the fixing bolt hole 65 formed at the upper fixing frame 61.

The fixing guide 68 is formed in a cylindrical shape having a predetermined length and has an upper end inserted into the fixing guide hole 66 formed in the upper fixing frame 61. Accordingly, the lower fixing frame 62 is moved in a straight direction along the fixing guide 68.

Fixing handle 69 is coupled to the screw portion formed in the lower portion of the fixing bolt 67, the workpiece to be inserted between the upper and lower fixing frames (61, 62) while repeating tightening and loosening along the fixing bolt (67) 80 can be fixed or the fixed state can be released. In addition, a plurality of handles 70 may be formed to facilitate rotation of the fixing handle 69.

Hereinafter, the coupling and operation of the hole cutting machine according to the present invention will be described with reference to FIGS. 2 to 4.

As shown in FIG. 2 and FIG. 3, the coupling of the hole cutting machine 100 firstly couples the driving motor 20 to the first coupling hole 11 formed in the base 10. At this time, the bolt 21 is fastened through the guide hole 12 so that the driving motor 20 is not separated.

Next, the cutting unit 30 is engaged. The cutting part 30 first couples the driven shaft 31 to the second coupling hole 13, and couples the rotation shaft 32 to the pair of third coupling holes 14, respectively. At this time, the driven shaft 31 and the rotating shaft 32 is inherently coupled to the second and third coupling holes (13,14) bearing 39.

In addition, the drive pulley 33 is coupled to the shaft of the drive motor 20, and the first gear 35 and the driven pulley 34 are sequentially coupled to the stepped surface of the driven shaft 31. Then, the second gear 36 is coupled to the upper portion of the rotation shaft 32 to be engaged with the first gear 35.

Thereafter, the belt 38 is coupled to the belt grooves of the driving pulley 33 and the driven pulley 34, and after adjusting the tension of the belt 38, the driving motor 20 is fixed with the bolt 21.

Next, the transfer unit 40 is coupled. The transfer unit 40 first inserts the transfer guide 41 into the transfer guide hole 16 formed in the base 10, and then upper and lower transfer brackets 42 and 43 at the upper and lower ends of the transfer guide 41. Fix firmly using a fixing bolt (46).

Then, the feed lead 47 is screwed into the fastening hole 15 formed in the base 10 through the first through hole 44 of the upper transfer bracket 42, the first of the lower transfer bracket 43 1 is rotatably coupled to the through-hole 44. In addition, the transfer handle 48 is coupled to the upper end of the transfer lead 37.

Finally, the fixing part 60 is coupled. The fixing part 60 first inserts and couples the fixing bolt 67 and the fixing guide 68 to the fixing bolt hole 65 and the fixing guide hole 66 of the upper fixing frame 61, respectively.

The fixing bolt 67 and the fixing guide 68 is coupled to the upper fixing frame 61 coupled to the lower conveying bracket 43 of the conveying part 40. At this time, welding may be used as a fixing method.

The fixing bolt hole 65 and the fixing guide hole 66 formed on the lower and middle fixing frames 62 and 63 are inserted to match the fixing bolt 67 and the fixing guide 68, and then the fixing handle 69 is inserted. It is fixed by being screwed to the screw part of the fixing bolt 67.

As shown in FIG. 4, the order of cutting holes in the workpiece 80 using the hole-in-the-field cutting machine 100 coupled as described above may be described first with the fixing frames 61, 62, and 63 of the fixing part 60. Insert the workpiece 80 between the), and firmly fixed with a fixing handle (69).

Thereafter, power is applied to the driving motor 20 to operate. At this time, when the drive motor 20 is small, as the drive pulley 33 is rotated, the rotational force of the drive motor 20 is transmitted to the driven pulley 34 through the belt 38, and the bell coupled with the driven pulley 34. The first gear 35 coupled to the coaxial 31 and the driven shaft 31 is rotated.

Therefore, when the first gear 35 is rotated, the second gear 36 engaged with the first gear 35 is rotated, and the cutting tool 37 coupled to the rotary shaft 32 and the rotary shaft 32 rotates. Done.

In this state, the transfer lead 47 is rotated by using the transfer handle 48 of the transfer unit 40. Accordingly, the base 10, which is screwed with the transfer lead 47, is transferred to the fixing part 40 side.

Accordingly, the cutting tool 37 is inserted through the work hole 64 formed in the fixed frame 61 to cut the hole in the workpiece 80. At this time, since the base 10 to which the rotating shaft 32 is coupled is transferred in a straight line along the transfer guide 41, the hole can be precisely processed in the workpiece 80.

The present invention is not limited to the above-described embodiments, and the present invention can be embodied in other forms by those skilled in the art without departing from the spirit of the invention. All design changes made within the technical scope equivalent to the claims are considered to be included within the scope of the present invention.

As described above, the present invention has an advantage of forming a hole or expanding a damaged hole without dismantling the device in a state where the existing device is installed.

In addition, the present invention has the advantage that it is possible to make a precise hole cutting operation in a place where it is difficult to maintain the posture for working by using a power tool or a hand tool because the working space for cutting holes is narrow.

In addition, the present invention can cut two or more holes in one operation.

Claims (2)

A base; A driving motor coupled to one side of the base; A driven shaft spaced apart from the drive motor by a predetermined distance and rotatably coupled to the base, a rotating shaft spaced apart from the driven shaft by a predetermined distance and rotatably coupled to the base such that an upper portion protrudes a predetermined length to an upper surface of the base; A drive pulley coupled to the drive motor, a driven pulley connected by the drive pulley and a belt and coupled to the driven shaft, a first gear coupled to the driven shaft to be positioned below the driven pulley, and the rotating shaft A cutting part coupled to an upper part of the cutting part including a second gear engaged with the first gear and a cutting tool coupled to a lower part of the rotating shaft; A plurality of transfer guides slidably coupled through the base, upper and lower transfer brackets coupled to both ends of the transfer guide, and threads formed on an outer circumferential surface thereof, and threaded to the base through the upper transfer bracket; A transfer part including a transfer lead having a lower end rotatably coupled to the lower transfer bracket and a transfer handle coupled to an upper end of the transfer lead; And The upper fixing frame is coupled to the lower conveying bracket of the conveying part and the work hole is inserted into the cutting tool on one side and the fixing bolt hole and the plurality of fixing guide holes are formed on the other side, and is inserted into and fixed to the fixing bolt hole A fixing bolt, a fixing guide inserted into and fixed to the fixing guide hole, and a work hole in which the cutting tool is inserted at one side of the upper fixing frame is formed, and the fixing bolt hole and a plurality of fixing guide holes are formed at the other side. And a fixed part including a fixed handle for fixing the workpiece between the lower fixed frame and the fixed bolt to be formed between the upper and lower fixed frames. The hole field cutting machine of claim 1, further comprising an intermediate fixing frame positioned between the upper and lower fixing frames of the fixing unit and having fixing grooves formed on both sides of one side of the fixing unit.

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