KR100985830B1 - A small milling machine for remaing lug in the ship - Google Patents

Abstract

The present invention relates to a milling apparatus for removing lug residue, comprising: a body frame having a rectangular frame shape; A guide rail installed at a lower side of the body frame and assembled with a slidable guide block; A screw shaft installed at a lower side of the body frame and having a movable drive block coupled thereto; A transfer motor fixed to the body frame and connected to the screw shaft; A ball screw embedded in a screw housing for connecting and fixing the guide block and the driving block to each other and driven by a height adjusting motor; A milling cutter installed in the motor housing which is engaged with the ball screw and lifted and lowered, and which is rotationally driven by a cutting motor; It comprises a power supply box provided on the upper portion of the body frame to supply power to the transfer motor, the height adjustment motor and the cutting motor.

According to the present invention, the work environment is improved because the work range is wide and the work range is wide, and the work environment is improved because the work environment is improved, and the musculoskeletal disease of the worker is prevented as well as the work efficiency is increased and the working time is shortened. The effect which contributes to productivity improvement can be acquired.

Lugs, Lug, Milling, Cutting, Compact, Lightweight, Residue, Grinding

Description

Small Milling Machine for Removing Rug Residues {A SMALL MILLING MACHINE FOR REMAING LUG IN THE SHIP}

The present invention relates to a small milling apparatus for removing lug residue, and more particularly, to a small milling apparatus for removing lug residue, which can be easily and neatly removed when removing the remaining lug after the block mounting of the vessel is completed.

In general, lugs refer to members that are used for lifting while protecting the structure to lift and move each block in the shipbuilding field, particularly in shipbuilding. .

These lugs are removed through cutting and grinding operations when block mounting is completed.

However, as illustrated in FIG. 1, when the lug on the flat deck is cut with oxygen, the lug residue 10 of about 10-25 mm is left.

In order to eliminate this, grinding work is usually performed. The grinding work is mainly performed by a worker using a grinding tool.

However, since the grinding work is performed entirely through manual work, excessive work time is required, causing enormous disruptions in productivity improvement.

For example, when using a hand grinder and a belt grinder, not only takes about one hour or more, but also causes many problems such as worker injury or contamination of the surrounding workplace due to sparks scattered during grinding.

In addition, the repetitive work for a long time causes musculoskeletal disorders of the worker, such as the main factor of the decline in productivity as well as the work evasion phenomenon is a serious state.

On the other hand, when working on the deck of the ship, the milling device is used, but the milling device is large and heavy, so the handling is difficult, and the crane must be used for transporting, so the available working range is very limited.

The present invention was created in view of the above-mentioned problems in the prior art, and was created to solve this problem. It provides a small milling device for removing the residue of lugs, which prevents musculoskeletal disorders of workers, and also facilitates the recovery of lug by-products generated during cutting, and at the same time improves work efficiency and productivity while preventing contamination of the surrounding environment. There is a major challenge.

The present invention is a means for achieving the above object, the body frame of the rectangular frame shape; A guide rail installed at a lower side of the body frame and assembled with a slidable guide block; A screw shaft installed at a lower side of the body frame and having a movable drive block coupled thereto; A transfer motor fixed to the body frame and connected to the screw shaft; A ball screw embedded in a screw housing connecting and fixing the guide block and the driving block to each other and driven by a height adjusting motor; A milling cutter installed in the motor / housing that is engaged with the ball screw and lifted / lowered, and rotated by a cutting motor; It provides a small milling device for removing the residue of the lug, characterized in that it comprises a power supply box provided on the upper portion of the body frame to supply power to the transfer motor, the height adjustment motor and the cutting motor.

At this time, the lower four corners of the body frame is characterized in that the caster is further installed.

In addition, the caster is fixed by the caster bracket, the caster bracket is characterized in that it is installed to move up and down by the electric jockey fixed to the body frame.

In addition, the lower end of the body frame is characterized in that the permanent magnet or electromagnet is further installed that can be turned on and off.

In addition, the guide rail and the screw shaft is characterized in that the corrugated pipe is further installed for sealing.

In addition, the lower end of the screw housing in which the ball screw is built is characterized in that the laser sensor for distance measurement is further installed.

In addition, the upper four corners of the body frame is characterized in that the carrying hook is further installed.

Furthermore, the power supply box is characterized in that the handle is further installed.

According to the present invention, the work environment is improved because the work range is wide and the work range is wide, and the work environment is improved because the work environment is improved, and the musculoskeletal disease of the worker is prevented as well as the work efficiency is increased and the work time is shortened. The effect which contributes to productivity improvement can be acquired.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Figure 2 is an exemplary front view of the lug residue removing mill according to the invention, Figure 3 is a plan view of Figure 2, Figures 4 and 5 are left and right side views of Figure 2, Figure 6 is in accordance with the present invention 7 is a perspective view illustrating a lug residue removing mill, and FIGS. 7 and 8 are diagrams illustrating an operation state of a lug residue removing mill according to the present invention.

As shown in Figure 2 and 6, the lug residue removing mill according to the present invention includes a body frame 100 to form a substantially rectangular frame.

And, the lower corner of the body frame 100, the caster 110 is installed so that the body frame 100 can be easily moved.

At this time, the caster 110 is fixed by the caster bracket 120 as shown in Figure 4, the caster bracket 120 is connected to the electric jockey 130 is configured to move up and down.

In addition, the electric jockey 130 has a known structure capable of folding and unfolding a plurality of links by a driving source such as a motor, and thus, the caster bracket 120 may be moved up and down, and thus the caster ( 110 may be spaced apart from the deck (D) which is the bottom surface shown in Figure 6, it may be clouded in contact with the deck (D).

In addition, permanent magnets 140 capable of on / off magnetic force are installed at left and right sides of the caster 110 adjacent to the lower end of the body frame 100.

The permanent magnet 140 is a means for firmly fixing the body frame 100 to the deck (D) to the body frame 100 in the working position (position of the lug residue (L) to be removed in Figure 6) When placed, the caster 110 is raised and operated to suck the body frame 100 to the deck D so as to firmly fix the body frame 100 so as not to flow.

In this case, the permanent magnet 140 is preferably a switch-type lever 142 that can be turned on / off as shown in Figures 2 and 3 is configured so that the operator can directly operate when necessary.

Here, if necessary, it is also possible to install an electromagnet in addition to the permanent magnet 140.

And, the upper end of the body frame 100 is provided with a hook 150 that can be connected to the moving means if necessary in the form shown in Figures 2, 4, 5 and 6, between the body frame ( Power supply box 160 for supplying the power required for the work while being fixed to 100 is installed.

In this case, a part of the power supply box 160 may be further provided with a handle ('170' of FIG. 2) to easily grip the body frame 100 to provide convenience of movement.

On the other hand, as shown in Figure 2 and 3, the guide rail 200 is installed on one side of the lower side of the body frame 100, the screw shaft 210 is installed on the opposite side.

In addition, the guide block 220 is slidably fitted to the guide rail 200, and the driving block 230 is coupled to the screw shaft 210.

Here, each of the guide rail 200 and the screw shaft 210 may be further provided with a corrugated pipe (Bellows) (B) on both sides with the connecting plate 250 to be described later.

The corrugated pipe (B) is to protect the guide rail 200 and the screw shaft 210 from the chip scattered during the cutting operation so that the mechanism to be operated through this can be operated smoothly.

In addition, the guide rail 200 and the screw shaft 210 have been described as a tool (that is, a milling cutter 440) which will be described later. However, the guide rail 200 and the screw shaft 210 are not necessarily limited thereto. Of course, one LM guide can be used.

In addition, a transfer motor 240 having a reducer 242 is fixed to one side of the body frame 100, and the reducer 242 is gear-coupled with one end of the screw shaft 210.

At this time, a variety of gear elements such as spur gear coupling, bevel gear coupling or worm gear coupling using gear ratio may be provided between the reduction gear 242 and the screw shaft 210. Gear coupling that can increase torque is most preferable. .

Furthermore, the connecting plate 250 as shown in FIGS. 2 and 3 is connected to the upper surfaces of the guide block 220 and the driving block 230, and the screw housing 300 is fixed to the connecting plate 250. The screw housing 300 is provided with a ball screw 310 vertically installed, and the height adjustment motor 320 is connected to the upper end of the ball screw 310.

In addition, a distance sensing laser sensor 330 is installed on the bottom surface of the screw housing 300, and the driving of the height adjustment motor 320 is controlled according to the detection signal of the laser sensor 330.

In addition, a motor housing 400 is tooth-coupled to the ball screw 310, and a cutting motor 410 having a reducer 420 is fixed to the motor housing 400, and a rotation shaft of the cutting motor 410 is fixed. The milling cutter 440 is installed at 430.

Therefore, the motor housing 400 is movable up and down according to the driving of the height adjustment motor 320, so that the distance between the milling cutter 440 and the deck D can be adjusted.

In addition, the milling apparatus of the present invention having such a configuration can be manufactured in a size of about 1330 mm × 1000 mm × 1100 mm, and about 350 kg in size, thereby miniaturizing and reducing the weight.

The present invention having such a configuration has the following operation relationship.

As shown in Figures 2 to 8, first cut the lug (Lug) on the plane deck (D) of the ship will leave the lug residue (L) as shown.

At this time, the lug residue L usually has a size in the range of 10-25 mm.

To remove this, the operator moves the milling apparatus according to the invention and places it on the lug residue L.

In this case, the movement of the milling device is easily made through the caster 110, in a state in which the laser sensor 330, which is a distance measuring sensor, of the milling device is positioned on the lug residue L. The electric jockey 130 is driven to raise the caster bracket 120 to raise the caster 110 from the surface of the deck D. When the permanent magnet 140 touches the floor, the lever 142 is operated to permanently By applying a magnetic force to the magnet 140 allows the milling device of the present invention, that is, the body frame 100 is firmly fixed to the surface of the deck (D) by the magnetic force.

Subsequently, the laser sensor 330 is operated to measure the protruding height of the lug residue L, wherein the distance from the lower end of the permanent magnet 140 to the laser sensor 330, the milling cutter 440 and the laser sensor Since the intervals between the 330 and the like are all known, it is not difficult to calculate the height of the lug residue L protruding from the surface of the deck D by arithmetic of the numerical value measured by the laser sensor 330. This can be handled simply by a control unit (not shown) made by means such as a microprocessor.

In this way, when the height of the lug residue (L) is calculated, the ball screw 310 is rotated to raise the motor housing 400 so that the milling cutter 440 is disposed on the top of the lug residue (L).

Subsequently, the cutting motor 410 is operated to rotate the milling cutter 440 to cut the lug residue L and to protect the surface of the deck D by ending the cutting operation with a margin of approximately 0.5-1 mm. It is desirable to.

In other words, the surface of the deck (D) is generally uneven, so it is a little bumpy, so if you cut to the surface without the above margin, the surface of the deck (D) will be damaged, so cut it with a margin to prevent it. Preferably, the finishing operation is preferably grinding.

In addition, when measuring the height of the lug residue (L) through the laser sensor 330, it is preferable to measure several places and to perform the cutting operation from the site based on the highest value. According to the setting value, the cutting operation can be performed. For example, by adjusting the number of revolutions of the milling cutter 440 through the control panel, the cutting speed, the amount of cutting, etc. can be easily adjusted. You will be able to control with the setpoint.

By repeatedly performing such a process, the lug residue L remaining on the surface of the deck D can be easily and neatly removed.

1 is an exemplary view showing a general lug residue,

2 is an exemplary front view of the lug residue removing milling apparatus according to the present invention;

3 is a plan view of FIG.

4 and 5 are left and right side views of FIG.

Figure 6 is a perspective view of a mill device for removing lug residue in accordance with the present invention,

Figure 7 and Figure 8 is an operating state of the lug residue removal milling apparatus according to the present invention.

♧ description of the symbols for the main parts of the drawing ♧

100 .... body frame 110 .... caster

120 .... Caster Bracket 130 .... Electric Jockey

140 .... permanent magnet 150 ...

200 .... Guide rail 210 .... Screw shaft

220..Guide block 230 .... Drive block

240 .... transfer motor 300 .... screw housing

310 .... Ballscrew 320 .... height adjustment motor

330 ... laser sensor 400 ... motor housing

410 .... cutting motor 420 ... reduction gear

430 .... shaft 440 .... milling cutter

Claims (8)

A body frame having a rectangular frame shape; A guide rail installed at a lower side of the body frame and assembled with a slidable guide block; A screw shaft installed at a lower side of the body frame and having a movable drive block coupled thereto; A transfer motor fixed to the body frame and connected to the screw shaft; A ball screw embedded in a screw housing connecting and fixing the guide block and the driving block to each other and driven by a height adjusting motor; A milling cutter installed in the motor housing which is engaged with the ball screw and moved up and down, and which is rotationally driven by a cutting motor; Small milling device for removing the residue of the lug, characterized in that it comprises a power supply box provided on the upper portion of the body frame to supply power to the transfer motor, height adjustment motor and cutting motor. The method of claim 1, further comprising: The lower edge of the body frame is a small milling device for removing lugs residues, characterized in that the caster is further installed. The method of claim 2; The caster is fixed by the caster bracket, the caster bracket is small milling apparatus for removing the residue of the lug, characterized in that installed up and down by the electric jockey fixed to the body frame. The method according to any one of claims 1 to 3; The bottom of the body frame is a small milling device for removing the residue of the lug, characterized in that the permanent magnet or electromagnet capable of magnetic on / off is further installed. The method of claim 1, further comprising: The guide rail and the screw shaft is a small milling device for removing lugs residues, characterized in that the corrugated pipe for sealing is further installed. The method of claim 1, further comprising: Small milling apparatus for removing lugs residues, characterized in that the distance measuring laser sensor is further installed at the lower end of the screw housing in which the ball screw is embedded. The method of claim 1, further comprising: The upper edge of the body frame is a small milling device for removing rubble residues, characterized in that the carrying hanger is further installed. The method of claim 1, further comprising: Small milling device for removing lug residue, characterized in that the handle is further installed in the power supply box.

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