KR101050525B1 - Portable lug milling machine - Google Patents

Abstract

PURPOSE: A portable milling machine for wide width lug is provided to cut and remove unnecessary part of a lug while moving and to improve the stability of task. CONSTITUTION: A motor is located on the upper part of a bracket and supplies the drive power to a steering wheel of a driving unit(400). The tilting steering wheel is located on the upper of the motor. A rotary connector has one end, which is connected with a rear wheel, and the other end which is connected with a piston of a cylinder of a rear wheel unit(500). The cylinder is connected in order to be fixed to the body. The rotary connector is connected in order to be circulated about the body. A plurality of magnets is combined on the bottom surface of the body.

Description

Portable lug milling machine

The present invention relates to a portable lug milling machine capable of cutting off unnecessary parts while moving.

Normally, when the ship is built, the hull is manufactured by connecting heavy steel plates. When moving the steel plates, the rope is moved to a protruding structure called a lug for lifting by a crane.

When the assembly is completed, lugs are removed because they are unnecessary, and they are cut using a welding machine, but they are not smoothly removed.

Proposed for this purpose is a portable lug milling machine, a typical conventional portable lug milling machine was a technique of the Republic of Korea Patent No. 315666.

Figure 1 shows a perspective view of this, in this case, since the cutting operation is made in the state that the cutting edge comes out of the support frame, the balance of the device is reduced and the continuous operation is possible in the direction of rolling wheels There was a limit to working at right angles. That is, it was inconvenient to use practically because the working radius was narrow, and in order to move, it was difficult to move quickly because the hydraulic pressure was generated by repeatedly stirring the operation handle.

1. Republic of Korea Patent No. 315666 (November 12, 2001)

The present invention is to provide a portable lug milling machine that is easy to use and has a wide working radius and high work stability.

Portable lug milling machine of the present invention for achieving the object as described, In the portable lug milling machine, a body having an upper frame connected to the upper side and the lower frame opened on one side; A sliding unit formed to be movable in the Y-axis direction within the body; A head unit coupled to the sliding unit in an open surface direction of the lower frame and moved along an X axis direction, and a spindle having a cutting tip coupled to a lower end thereof toward a Z axis direction; The bracket coupled to the outer surface of the body to the opposite side of the head, the bracket to which the steering wheel is connected can be moved up and down and the driving force is provided to the steering wheel by a motor provided on the upper surface of the bracket, the inclination to the upper side of the motor A driving unit provided with a handle capable of; A rear wheel unit which is connected to the other end of a rotation connector in which a rear wheel is connected to the piston and one end of the cylinder, wherein the cylinder is fixed to the body and the rotation connector is pivotably connected to the body; It characterized in that it comprises a; a plurality of magnets coupled to the bottom side of the body.

And in the present invention, the sliding unit, a moving frame connected to the rail formed along the Y-axis direction on the lower frame upper surface; A first lead screw disposed at a lower side of the movable frame in parallel with the rail; A gearbox including a nut coupled to the first lead screw and a first bevel gear connected to the nut outer surface to rotate; A connector which is rotated under the rotational force of the first motor mounted to the moving frame and is coupled to the first bevel gear by coupling a second bevel gear to both ends; A second lead screw connected to the second motor mounted on the moving frame and installed and rotated in the X-axis direction; A nut holder including a nut coupled to the second lead screw; And a head mounting plate coupled to the nut holder and to which the head unit is connected.

And the head unit in the present invention, the head body coupled to the head mounting plate and provided with a hollow hole in the Z-axis direction; A spindle housing inserted into the hollow hole of the head body to move up and down and having a spindle hole; A spindle inserted into the spindle hole and having a cutting tip coupled to a lower end thereof, and having an upper outer surface splined thereto; A spindle gear configured to receive rotational force from a third motor mounted above the head body and to be coupled to a spline portion of the spindle to rotate the spindle; A rack gear formed on an outer surface of the spindle housing in a vertical direction; A pinion gear connected to a cutting amount adjusting handle projecting out of the head body and rotating in engagement with the rack gear; And locking means provided to fix the position of the spindle housing with respect to the head body.

And the driving unit in the present invention, the main tube is connected to the outer surface of the body; A cylinder inserted into the main tube; A piston inserted into the cylinder; And a swivel shaft inserted between the main tube and the cylinder and having a lower end connected to the bracket and constrained with the lower end of the piston.

Portable lug milling machine according to the present invention has the effect that the cutting operation is possible over a wide range, there is also the effect that one operator can perform the operation and cutting operation of the milling machine. In addition, it is possible to increase the work efficiency because it is possible to move quickly.

1 is a perspective view of a portable lug milling machine according to the prior art.
Figure 2 is a schematic perspective view of the body of the portable lug milling machine according to an embodiment of the present invention.
3 is a front view of a portable lug milling machine.
4 is a rear view of FIG. 3.
5 is a side view of FIG. 3.
6 is a plan view of FIG. 3.
7 is a front view of the sliding unit.
8 is a cross-sectional view taken along the line AA in FIG. 7.
9 is a cross-sectional view taken along line BB in FIG. 7.
10 is a cross-sectional view taken along line CC in FIG. 7.
FIG. 11 is a plan view of FIG. 7; FIG.
12 is a front partial sectional view of the head unit;
FIG. 13 is a side cross-sectional view of FIG. 12. FIG.
FIG. 14 is a sectional view taken along the line DD of FIG. 12. FIG.
15 is a cross-sectional view taken along the line EE of FIG. 12.
16 is a front partial sectional view of the driving unit;
17 is a side partial sectional view.
18 is a side view of the rear wheel unit.
19 is a partial sectional view of a rear wheel unit.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Whenever a component is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, not the exclusion of any other element, unless the context clearly dictates otherwise.

Figure 2 is a perspective view of the body of the portable lug milling machine according to an embodiment of the present invention, Figure 3 is a front view of the portable lug milling machine, Figure 4 is a rear view of Figure 3, Figure 5 is a view 3 is a side view, and FIG. 6 corresponds to the top view of FIG. 3.

As shown, the portable lug milling machine of the present invention includes a body 100, a sliding unit 200, a head unit 300, a driving unit 400, a rear wheel unit 500, and a magnet 600. In addition, the cutting tip 380 of the head unit 300 may be automatically cut by the driving unit 400 and the working area positioned on the ground.

The body 100 forms a basic form of a portable lug milling machine, and may be divided into a lower frame 110 and an upper frame 120. In general, the body 100 has a rectangular box shape, but in the case of the lower frame 110, one side is opened in a c-shape. The upper frame 120 is connected to the lower frame 110. In the present invention, the head unit 300 to be described later may be sunk through the open surface of the c-shaped lower frame 110.

The sliding unit 200 is provided to be moved in both the X-axis and Y-axis inside the body 100, the head unit 300 is coupled to the sliding unit 200, while the spindle 330 moves in the Z-axis direction The amount of cutting can be varied.

The driving unit 200 is formed on the outer surface of the body 100 on the opposite side to the head unit 300, the bracket 450 to which the steering wheel 460 is coupled is moved up and down together with the steering wheel 460 and is also rotated. And the direction steering wheel 470 is provided to be able to adjust the direction of movement. The steering wheel 460 is driven by the driving force by the fourth motor (M4) is to move in rolling motion.

The rear wheel unit 500 is provided on the left and right sides of the body 100 and the rear wheel 510 is connected to the rotation connector 540 and the other end of the rotation connector 540 is connected to the cylinder 520. The pivotal connector 540 is pivotally connected to the body 100 so that the rear wheel 510 is lowered according to the operation of the cylinder 520 to lift the body 100 upward. Of course, the rear wheel 510 and the steering wheel 460 are simultaneously lowered.

A plurality of magnets 600 are installed on the bottom of the body 100, and are preferably provided at four corners of the lower frame 110. The magnet 600 is to be a magnetic force is formed by the supply of electricity is moved to the working position and after the steering wheel 460 and the rear wheel 510 is raised, the magnet 600 is magnetized and attached to the ground do. Here, the ground means a base material such as an iron plate to which lugs are bonded. That is, when the magnet 600 is attached to the iron plate, the body 100 is fixed so as not to move, so that the spindle 330 of the head unit 300 is rotated to perform the cutting operation by the cutting tip 380. . Since the magnet 600 is magnetized while the cutting operation is performed, smooth cutting operation is possible without shaking.

It will be described in more detail with respect to the sliding unit 200 is configured to be able to move in the biaxial direction inside the body 100. FIG. 7 is a front view of the sliding unit, FIG. 8 is a sectional view taken along the line AA in FIG. 7, FIG. 9 is a sectional view taken along the line BB in FIG. 7, FIG. 10 is a sectional view taken along the line CC in FIG. 7, and FIG. A plan view is shown.

When the sliding unit 200 is subdivided, the rail 210, the moving frame 220, the first lead screw 230, the gear box 240, the connector 250, the second lead screw 260, and the nut holder ( 270, the head mounting plate 280, and the like.

Two rails 210 are installed on the upper surface of the lower frame 110 constituting the body 100 along the Y-axis direction, and the moving frame 220 is coupled to the rails 210. The moving frame 220 may be moved along the rail 210 in the Y-axis direction.

The first lead screw 230 connected to the lower frame 110 and parallel to the rail 210 is formed at the lower side of the movable frame 220. The first lead screw 230 is fixed to the lower frame 110 and is required for the Y-axis movement of the moving frame 220.

In order to move the moving frame 220 along the first lead screw 230, a gear box 240, a connector 250, a first motor (M1) is provided, the gear box 240 is a moving frame ( A nut 271 is installed on each of the lower left and right sides of the 220 and coupled to the first lead screw 230, and a first bevel gear V1 is connected to the outer surface of the nut 271 and rotates.

The first motor (M1) is mounted on the moving frame 220, the first motor (M1) is to provide power for the Y-axis movement of the moving frame 220, the rotational force of the first motor (M1) Is transmitted to the connector 250 connected to the first bevel gear V1 of the gearbox 240. The connector 250 is coupled to the lower side of the movable frame 220 and is rotatable, and second bevel gears V2 are connected one by one to both ends thereof to transmit power to the first bevel gear V1.

A worm W is coupled to the rotating shaft of the first motor M1, and a worm wheel WH is connected to the connector 250, and the worm W and the worm wheel WH are engaged with each other so that the connector 250 is engaged. The second bevel gear (V2) coupled to both ends of the connector 250 is transmitted to the rotational force of the first motor (M1) to be engaged with the first bevel gear (V1) and finally the first lead screw 230 It is to rotate the nut 271 coupled to. When the nut 271 is rotated, the gearbox 240, the connector 250, and the moving frame 220 move together in the Y-axis direction along the first lead screw 230.

On the other hand, the moving frame 220 is provided with a second lead screw 260 which is disposed orthogonal to the first lead screw 230 in the X-axis direction, the second lead screw 260 is a moving frame 220 It is connected to the second motor (M2) mounted on the rotation.

The nut 261 coupled to the second lead screw 260 is installed in the nut holder 260a, and the head mounting plate 280 is coupled to the nut holder 260a. The head unit 300 is installed to the head mounting plate 280, and when the second lead screw 260 is rotated, the nut holder 260a is moved left and right in the X-axis direction. X-axis movement of the head unit 300 coupled to the) is enabled.

Preferably, the nut holder 260a is connected to the head mounting plate 280 while the nut holder 260a penetrates the slot hole 221 so as to have a slot hole 221 which is long opened in the X-axis direction in front of the moving frame 220. It shall be. The slot hole 221 limits the maximum movable distance to the left and right of the head mounting plate 280.

Next, the head unit 300 will be described in detail. FIG. 12 is a sectional front view of the head unit, FIG. 13 is a sectional sectional view of FIG. 12, FIG. 14 is a sectional view taken along the line D-D in FIG. 12, and FIG. 15 is a sectional view taken along the line E-E in FIG. 12.

The head unit 300 is a head body 310, spindle housing 320, spindle 330, spindle gear 340, the third motor (M3), rack gear 350, pinion gear 360, lock And means 370.

The head body 310 is coupled to the head mounting plate 280 and the hollow hole 311 is formed in the vertical direction Z-axis direction. The spindle hole 321 is also formed in the Z-axis direction in the spindle housing 320 which can be inserted into the hollow hole 311 and moved up and down.

The spindle hole 321 is inserted into the spindle 330 is coupled to the rotatable state, the cutting tip 380 is coupled to the lower end of the spindle 330 and the spline 331 on the upper outer surface of the spindle 330 Formed. The spindle 330 is coupled to the inside of the spindle housing 320 through a plurality of bearings (B) to be rotatable, and the spindle gear 340 is coupled to the spline 331 of the spindle 330. . Since the spindle gear 340 is rotated by receiving a rotational force from the third motor M3 mounted above the head body 310, the spindle 330 may also rotate.

The first pulley P1 is connected to the rotation shaft of the third motor M3, and the first pulley P1 is connected to the second pulley P2 and the belt K, and the second pulley P2 is the spindle. A pulley gear L engaged with the gear 340 is coupled to the shaft.

The spindle housing 320 may be moved up and down with respect to the head body 310. For this purpose, a rack gear 350 is provided on an outer surface of the spindle housing 320 in an up and down direction. A cutting amount adjusting handle H protruding to the outside of the head body 310 is provided, and the cutting amount adjusting handle H is connected to the pinion gear 360 and the pinion gear 360 is coupled to the rack gear 350. Is achieved. Accordingly, by rotating the cutting amount adjusting handle H, the spindle housing 320 is moved up and down with respect to the head body 310 by the combination of the rack gear 350 and the pinion gear 360.

More specifically, the worm W is coupled to the end of the cutting amount adjusting handle H, the worm W is engaged with the worm wheel WH, and the worm wheel WH is coupled to one end of the pinion shaft 361. The pinion gear 360 is coupled near the other end of the pinion shaft 361 and the pinion gear 360 meshes with the rack gear 350. By adjusting the degree of falling of the spindle housing 320 it is possible to adjust the cutting amount for the portion to be cut.

More preferably in the head unit 300, it is necessary to fix the position of the spindle housing 320 with respect to the head body 310, for this purpose it is assumed to have a locking means 370. That is, after positioning the spindle housing 320, the spindle housing 320 should not move up and down. Therefore, in the embodiment of the present invention, the lock means 370 is composed of a lock handle 371, lock nut 372 and friction block 373. The lock nut 372 is fixed to an outer surface of the head body 310 and screwed to the lock handle 371. The through-hole in which the lock nut 372 is installed is formed to the outer surface of the spindle housing 320, and the friction block 373 is positioned between the spindle housing 320 and the lock nut 372 and rotates the lock handle 371. As a result, the friction block 373 is pressed to come into contact with the outer surface of the spindle housing 320. When the friction block 373 is in close contact with the outer surface of the spindle housing 320, the spindle housing 320 does not move up and down.

Next, the driving unit 400 will be described in more detail. FIG. 16 is a front partial sectional view of the driving unit, and FIG. 17 is a side partial sectional view.

The driving unit 400 is coupled to the outer surface of the body 100 to the opposite side of the head unit 300, the cylinder 420 is coupled to the main tube 410 directly connected to the outer surface of the body 100. The cylinder 420 is coupled in the vertical direction (Z axis) and the piston 430 is inserted into the cylinder 420.

A swivel shaft 440 is inserted between the main tube 410 and the cylinder 420, and the lower end of the swivel shaft 440 is connected to the bracket 450. The lower end of the piston 430 is constrained with the swivel shaft 440.

The swivel shaft 440 is lowered together with the swivel shaft 440 because the piston 430 is lowered when the hydraulic pressure is supplied into the cylinder 420, and the swivel shaft 440 is the main tube 410 and the cylinder 420. Can be rotated between

A steering wheel 460 is rotatably coupled to a lower portion of the bracket 450, and a fourth motor M4 is installed on one side of an upper surface of the bracket 450, and is rotated by the rotational force of the fourth motor M4. The steering wheel 460 is driven. To this end, the steering wheel 460 is rotated by connecting the driving sprocket S1 to the shaft of the fourth motor M4 and installing the driven sprocket S2 on the steering wheel shaft 461 and connecting the chain to the chain C.

The direction adjusting handle 470 is coupled to the upper side of the fourth motor M4, but the direction adjusting handle 470 is inclined. That is, the steering wheel 460 is rotated when the operator tilts the direction adjusting handle 470 to give a force in a desired direction so as to apply less force when changing the direction of the steering wheel 460. The steering wheel 470 is installed on the auxiliary bracket 480 protruding from the bracket 450 while surrounding the fourth motor M4. Both ends of the shaft 481 penetrate the auxiliary bracket 480 from side to side. Insert the long protruding spring 482 and one end of the spring 482 is fixed to the auxiliary bracket 480 and the other end to restrain the lower portion of the direction handle 470. By this structure, the steering wheel 470 can be inclined and erected upright again when the force is removed.

Preferably, an operator moves down the upper end of the steering wheel 470 of the control button D, the steering wheel 460 and the rear wheel 510 of the fourth motor M4 for driving the steering wheel 460. It can be provided with the same control button (D) for.

Next, the rear wheel unit 500 will be described in detail. 18 is a side view of the rear wheel unit, and FIG. 19 shows a partial cross-sectional view of the rear wheel unit.

The rear wheel 510 is lowered at the same time as the steering wheel 460 to move in rolling motion. The piston 530 of the cylinder 520 fixed to the body 100 and one end of the rotation connector 540 are connected, and the rear wheel 510 is coupled to the other end of the rotation connector 540. The pivoting connector 540 is bent in a substantially V-shape and is connected to be pivotable relative to the body 100.

Therefore, when the cylinder 520 is operated and the piston 530 pushes the pivoting connector 540, the pivoting connector 540 is rotated, so that the rear wheel 510 descends downward and the steering wheel 460 is rotated. Since the body 100 is lowered at the same time, the body 100 is raised while being relatively far from the ground.

The cylinder 520 used in the present invention is suitable for a hydraulic cylinder, and a plurality of motors may be selected and used among a geared motor, an electric motor, or a hydraulic motor.

Hereinafter will be described the operating relationship of the portable lug milling machine according to the present invention.

After moving to the working position, the steering wheel 460 and the rear wheel 510 are raised and the magnet 600 contacts the ground. When magnetized by applying electricity to the magnet 600 connected to the body 100, the magnet 600 is attached to the ground, the body 100 is unable to move.

Subsequently, the cutting tip 380 of the spindle 330 is positioned at the cutting position and adjusted to an appropriate cutting amount. Then, when the spindle 330 is rotated, the cutting is performed and the moving frame 220 is moved in the Y axis direction or the head. The head unit 300 connected to the mounting plate 280 is moved in the X-axis direction to perform a cutting operation.

That is, while the head unit 300 is moved in the X-axis and Y-axis directions to the inside and the outside of the lower frame 110, the cutting operation may be performed over a wide area. To move after the cutting operation, the magnetic force of the magnet 600 is dissipated, and then the steering wheel 460 and the rear wheel 510 are lowered to lift the body 100. Thereafter, the steering wheel 460 is driven and moved to a desired place while rotating the steering wheel 470.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be.

It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The portable lug milling machine according to the present invention can be used for cutting unnecessary parts after removing a lug at the time of drying of a ship.

100: body 110: lower frame
120: upper frame 200: sliding unit
210: rail 220: moving frame
221: slot hole 230: first lead screw
240: gearbox 250: connector
260: second lead screw 271: nut
280: head mounting plate 261: nut
260a: nut holder 300: head unit
310: head body 311: hollow hole
320: spindle housing 321: spindle hole
330: spindle 331: spline
340: spindle gear 350: rack gear
360: pinion gear 361: pinion shaft
370: lock means 371: lock handle
372: lock nut 373: friction block
380: cutting tip 400: driving unit
410: main tube 420: cylinder
430: piston 440: swivel shaft
450: bracket 460: steering wheel
461: steering wheel shaft 470: direction adjustment handle
480: auxiliary bracket 481: shaft
482: spring 500: rear wheel unit
510: rear wheel 520: cylinder
530: Piston 540: Rotating Connector
M1: 1st motor M2: 2nd motor
M3: 3rd motor M4: 4th motor
V1: First Bevel Gear V2: Second Bevel Gear
W: Worm WH: Worm Wheel
B: bearing P1: first pulley
P2: 2nd pulley K: belt
L: Pulley Gear H: Cutting Adjustment Handle
S1: Drive Sprocket S2: Driven Sprocket
C: Chain D: Control Button

Claims (4)

delete A body having an open lower frame and an upper frame connected to an upper side thereof;
A sliding unit formed to be movable in the Y-axis direction within the body;
A head unit coupled to the sliding unit in an open surface direction of the lower frame and moved along an X axis direction, and a spindle having a cutting tip coupled to a lower end thereof toward a Z axis direction;
The bracket coupled to the outer surface of the body to the opposite side of the head, the bracket to which the steering wheel is connected can be moved up and down and the driving force is provided to the steering wheel by a motor provided on the upper surface of the bracket, the inclination to the upper side of the motor A driving unit provided with a handle capable of;
A rear wheel unit which is connected to the other end of a rotation connector in which a rear wheel is connected to the piston and one end of the cylinder, wherein the cylinder is fixed to the body and the rotation connector is pivotably connected to the body;
As a portable lug milling machine including a plurality of magnets coupled to the bottom side of the body,
The sliding unit,
A moving frame connected to a rail formed along the Y-axis direction on an upper surface of the lower frame;
A first lead screw disposed at a lower side of the movable frame in parallel with the rail;
A gearbox including a nut coupled to the first lead screw and a first bevel gear connected to the nut outer surface to rotate;
A connector which is rotated under the rotational force of the first motor mounted to the moving frame and is coupled to the first bevel gear by coupling a second bevel gear to both ends;
A second lead screw connected to the second motor mounted on the moving frame and installed and rotated in the X-axis direction;
A nut holder including a nut coupled to the second lead screw;
A portable lug milling machine, comprising: a head mounting plate coupled to the nut holder and to which the head unit is connected. The method of claim 2,
The head unit,
A head body coupled to the head mounting plate and provided with a hollow hole in a Z-axis direction;
A spindle housing inserted into the hollow hole of the head body to move up and down and having a spindle hole;
A spindle inserted into the spindle hole and having a cutting tip coupled to a lower end thereof, and having an upper outer surface splined thereto;
A spindle gear configured to receive rotational force from a third motor mounted above the head body and to be coupled to a spline portion of the spindle to rotate the spindle;
A rack gear formed on an outer surface of the spindle housing in a vertical direction;
A pinion gear connected to a cutting amount adjusting handle projecting out of the head body and rotating in engagement with the rack gear;
And a locking means provided to fix the position of the spindle housing relative to the head body. The method of claim 2 or 3,
The driving unit,
A main tube connected to the outer surface of the body;
A cylinder inserted into the main tube;
A piston inserted into the cylinder;
And a swivel shaft inserted between the main tube and the cylinder and having a lower end connected to the bracket and constrained with the lower end of the piston.

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