KR102188159B1 - Vertical machning center applied with APC with rotational configuration - Google Patents

Abstract

The present invention relates to an APC-applied vertical machining center having a central rotating unit. According to the present invention, the APC-applied vertical machining center having a central rotating unit comprises: a column unit; a bed unit; a saddle unit connected to an upper side of the bed unit by a Y-axis transfer unit; a table unit connected to an upper side of the saddle unit by an X-axis transfer unit; a first head unit; a second head unit; a pallet unit; and a pallet exchange unit. According to the present invention, it is possible to increase pallet exchange efficiency.

Description

Vertical machning center applied with APC with rotational configuration}

The present invention relates to an APC-applied vertical machining center having a central rotating part, and by providing a pallet to be seated on a machining center having a two-head spindle structure through rotation, the pallet exchange efficiency is improved and the work is performed at the same time. The present invention relates to a machining center that can easily secure an entry space for a worker and is provided in a form capable of fine correction of displacement in the Y-axis direction.

In general, in a machining center (MCT), a saddle and a table rotate in the X-axis and Y-axis directions, set the position on the plane of the work piece, and the spindle rotates in the Z-axis direction, and is easily machined by the rotating spindle. This was done.

On the other hand, in the machining center, for ease of work, the operator fixes and sets the work piece to the pallet that has not been processed, and when the work piece being processed is finished, the pallet is automatically replaced. An automatic pallet changer (APC: Auto Pallet Changer) is used to increase the value.

However, the existing APC is formed in a structure that is bound to be large in volume, so it is difficult for the operator to access the table of the machining center, so there is a difficulty in work, and the cutting oil is spilled and scattered toward the APC during the processing process. There was a problem in that the overall work efficiency was lowered due to difficulty in managing the product.

In addition, in recent years, in order to increase processing efficiency, a double head type machining center (MCT) is being studied so that a plurality of workpieces can be simultaneously processed.When processing two workpieces, due to thermal deformation and other variables, It has been pointed out that a displacement may occur at a position on a fine plane, so that the dimensions of the final processed workpiece are not the same.

Accordingly, development of a device capable of performing processing by immediately responding to the position of the head to the displacement information of the workpiece being sensed, and allowing any one or more of the two heads of the spindle to move in the Y-axis direction. This is the situation that is being demanded.

However, due to the structure of the head on which the spindle is formed, movement in the Z-axis and X-axis directions is possible, but fine movement in the Y-axis direction (forward and backward) has a problem.

In this regard, looking at the prior art, a'double spindle head machining center' is disclosed in Korean Patent Application Laid-Open No. 10-2016-0090636, but this has a problem that does not solve the above problems.

Korean Patent Registration No. 10-2016-0090636 (2016.08.01)

Accordingly, the present invention has been conceived to solve the problems of the prior art as described above, and an object thereof is to provide a machining center composed of a double head.

In addition, an object of the present invention is to provide a machining center in which at least one head can be moved finely in the Y-axis direction when two or more heads are configured.

In addition, an object of the present invention is to provide a machining center equipped with an APC (automatic pallet changer) that facilitates securing space for a worker and facilitates device management.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention not mentioned here are those of ordinary skill in the technical field to which the present invention belongs from the following description. Will be clearly understood.

An APC-applied vertical machining center having a central rotating part according to the present invention includes a column part, a bed part connected to the front side of the lower part of the column part, and provided in a plate shape parallel to the ground, and a Y-axis transfer unit on the upper side of the bed part. A saddle part connected by and provided to be movable in the Y-axis direction, a table part connected to the upper side of the saddle part by an X-axis transfer unit and provided to be movable in the X-axis direction, and formed on the front side of the upper part of the column part Is provided to be movable in the Z-axis direction by the first Z-axis transfer unit, and is formed on the front side of the first head portion where the first spindle is formed, the column portion, and the second Z-axis transfer unit Thus, the Z-axis movement is provided, the second spindle is formed, the second head portion formed parallel to the first head portion and the X-axis, and may be selectively mounted on the upper portion of the table portion, and It is configured to include a pallet part provided so that the piece can be mounted, and a pallet exchange part which is formed to be spaced apart from the front side of the bed part, so that the plurality of pallet parts may be exchanged through rotation.

An APC-applied vertical machining center having a central rotating part according to the present invention has the effect of being able to process two workpieces at the same time by being configured with a double head.

In addition, the present invention has the effect of enabling fine movement of at least one head in the Y-axis direction when configuring two or more heads.

In addition, there is an APC (automatic pallet exchange device) provided, it is easy to secure the space for the operator, there is an effect that the management of the device is easy.

1 is a front perspective view of an APC-applied vertical machining center having a central rotating part according to the present invention.
2 is a rear perspective view of an APC-applied vertical machining center having a central rotating part according to the present invention.
3 is a perspective view showing a second head portion and a Y-axis fine displacement portion of an APC-applied vertical machining center having a central rotation portion according to the present invention.
4 is a side view showing a second head portion and a Y-axis fine displacement portion of an APC-applied vertical machining center having a central rotation portion according to the present invention.
Figure 5 is a perspective view of the Y-axis micro-displacement portion of the vertical machining center for APC having a central rotating portion according to the present invention.
7 shows the configuration of a pallet part and a pallet exchange part of an APC-applied vertical machining center having a central rotating part according to the present invention.
FIG. 8 is a sequence diagram illustrating a process in which a pallet part is exchanged through a pallet exchange part of an APC-applied vertical machining center having a central rotation part according to the present invention.

Specific matters, including the problems to be solved, means for solving the problems, and effects of the present invention as described above, are included in the following examples and drawings. Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings.

An APC-applied vertical machining center having a central rotating part according to the present invention is connected to the front side of the column part 100 and the lower part of the column part 100, as shown in FIGS. 1 and 2, and is parallel to the ground. The bed part 200 provided in a plate shape, a saddle part 300 connected to the upper side of the bed part 200 by a Y-axis transfer unit to be movable in the Y-axis direction, and the upper side of the saddle part 300 The table part 400 is connected by an X-axis transfer unit to be movable in the X-axis direction, and is formed on the front side of the column part 100, by the first Z-axis transfer unit, in the Z-axis direction. It is provided to be movable to, the first spindle; is formed on the front side of the first head part 500, the column part 100 is formed, by the second Z-axis transfer unit, provided to be able to move the Z-axis And, a second spindle is formed, the second head portion 600 formed in parallel on the first head portion and the X-axis, and may be selectively mounted on the upper portion of the table portion 400, the work piece on the upper surface A pallet part 700 provided to be mounted, and a pallet exchange part 800 provided to be spaced apart from the front side of the bed part 200 so that the plurality of pallet parts 700 may be exchanged through rotation ).

First, the column part 100 is a part that forms a body of a vertical machining center, and is provided to have a length in a direction perpendicular to the ground.

At this time, it will be apparent that the column part 100 should be made of a material capable of supporting a high load, and should have a structure capable of easily responding to stresses acting in various directions.

To this end, the column part 100 may further include a reinforcing part (not shown).

Specifically, an accommodation space is formed inside the column part 100, and the reinforcing part (not shown) is accommodated and formed in a form capable of firmly supporting the interior of the column part 100.

Accordingly, the reinforcing part (not shown) may be configured in any form as long as it is a form capable of supporting a high load applied to the column part 100, and preferably the inside of the column part 100 It is advantageous to form a reinforcing structure in which a plurality of honeycomb grids are overlapped.

Next, the bed part 200 is formed on the front side of the lower part of the column part 100 and is provided in a plate shape parallel to the ground.

The bed part 200 is provided to serve as a bed of a machine tool that is typically provided.

Therefore, it can easily support the ground and can be configured in any shape as long as it can form a flat surface on the top surface.

A Y-axis transfer unit 210 having a rail formed in the Y-axis direction is further provided above the bed part 200 so that the following saddle part 300 can be easily rotated in the Y-axis direction.

Specifically, the Y-axis transfer unit 210 is provided with an LM guide and a server motor capable of rotating a ball screw, and the server motor is controlled by the following control unit (not shown). The saddle part 300 may be rotated in the Y-axis direction.

At this time, based on the column part 100, the Y-axis direction is defined as front and rear, the following X-axis direction is left and right, and the following Z-axis direction is defined as upward and downward, which are in FIGS. 1 and 2 As shown in.

Next, the saddle part 300 is connected by a Y-axis transfer unit 210 on the upper side of the bed part 200 and is provided to be movable in the Y-axis direction.

Like the bed part 200, the saddle part 300 may be configured in any form as long as it can serve as the saddle part 300 of a conventional machine tool.

An X-axis transfer unit 310 is provided on the upper side of the saddle part 300, and the following table part 400 is provided to be rotatable in the X-axis direction.

Next, the table part 400 is connected by an X-axis transfer unit 310 on the upper side of the saddle part 300, is provided to be movable in the X-axis direction, and a work piece can be fixed to the upper end. Is provided.

The table part 400 is a part in which a work piece (workpiece) can be directly seated or a pallet portion 700 below can be seated.

Therefore, it may be configured in any form as long as the work piece and the pallet part 700 below can be easily seated.

The table part 400 is formed on the upper side of the saddle part 300 and is formed in the X-axis direction by an X-axis transfer unit 310 formed between the table part 400 and the saddle part 300. It can be easily rotated.

The X-axis transfer unit 310 may be configured in any form as long as the table part 400 can be easily rotated in the X-axis direction.

Next, the first head part 500 is formed on the front side of the upper part of the column part 100, is provided to be movable in the Z-axis direction by the first Z-axis transfer unit 510, and the first The spindle 520 is provided to be formed.

The first head part 500 may be configured in any form as long as a circuit engine and a wiring through which the first spindle 520 can be easily operated can be provided.

In addition, the first head part 500 can be easily rotated in the Z-axis direction by the first Z-axis transfer unit 510.

The first Z-axis transfer unit 510 and the following second Z-axis transfer unit 610 can easily rotate the first head part 500 and the following second head part 600 in the Z-axis direction. It can be configured in any form as long as it can be formed.

The first spindle 520 has a configuration in which a tool (processing tip) for work is seated and can be rotated, and the tool can be easily seated and a high-speed rotation for work can be easily made. Ramen can be configured in any form.

Next, the second head part 600 is formed on the front side of the upper part of the column part 100, provided to be movable in the Z-axis by the second Z-axis transfer unit 610, and the second spindle ( 620 is formed, and is provided to be formed in parallel with the first head part 500 on the X-axis.

The second head part 600 is provided in the same shape as the first head part 500 and is formed parallel to the first head part 500 and on the X-axis, so that two workpieces are simultaneously processed. It is a configuration that can be done.

At this time, when a minute displacement occurs in the Y-axis direction only in one object due to thermal deformation or other variables during the processing of the workpiece, a means for correcting this is required.

Accordingly, a Y-axis fine displacement portion 630 may be further provided in the first head portion 500 or the second head portion 600.

Specifically, the Y-axis micro-displacement portion 630 is formed on the rear side of the first head portion 500 or the second head portion 600, and the first head portion 500 and the second head portion It is a configuration that can control any one of 600 to enable fine movement in the Y-axis direction.

In the following, it is assumed that the Y-axis fine displacement portion 630 is formed in the second head portion 600 as one of the embodiments.

The Y-axis microdisplacement part 630, as shown in FIGS. 3 to 5, includes an inclined part 631, a first guide part 632, a second guide part 633, a power part 634, It is configured to include a displacement control unit (not shown).

First, the inclined portion 631 is provided in the shape of a plate having an inclined surface between the rear surface of the second head portion 600 and the column portion 100.

Next, the first guide portion 632 is formed on one front side of the inclined portion 631, and a rail is formed in the Z-axis direction.

At this time, the rail formed on one side of the front surface of the inclined portion 631, and formed in the Z-axis direction, strictly corresponds to the diagonal direction of the Z-axis and the Y-axis, as shown in Figs. It is defined as a direction and explained.

Next, the second guide part 633 is formed on the other front side of the inclined part 631 to form an inclined rail parallel to the first guide part 632.

Next, the displacement control unit (not shown) controls the movement of the first guide unit 632 and the second guide unit 633 in the Ys direction in response to the measured Y-axis microdisplacement information, and the second Controls the movement of the Z-axis transfer unit 610 in the Z-axis direction.

Specifically, the displacement control unit (not shown) is configured to control the second head unit 600 to be able to move finely in the Y-axis direction, and the first guide unit 632 and the second guide unit It is a configuration for controlling the movement of the second head part 600 in the Y-axis direction through rotation of 633 and the second Z-axis transfer unit 610.

More specifically, as shown in FIG. 4, in order to move the second head part 600 in the Y-axis direction by (a) in the displacement control part (not shown), the first guide part 632 And the second guide part 633 is controlled to move in the Ys direction by (b), and through the control of the second Z-axis transfer unit 210, the target Y is moved by compensation by (c) in the Z-axis direction. It can move as much as (a) in the axial direction.

In the displacement control unit (not shown), the value of (b) moving in the Ys direction and the value of (c) moving in the Z-axis direction for movement as much as (a) are calculated as the Z-axis and the Ys-axis. It will be obvious to calculate using the angle formed and the resulting trigonometric ratio.

The displacement control unit (not shown) easily controls the first guide unit 632, the second guide unit 633, and the second Z-axis transfer unit 610 in the Y-axis direction, as described above. The second head part 600 may be configured in any form as long as it can be controlled to move.

In addition, the first guide portion 632 and the second guide portion 633 are configured to form a path in which the second head portion 600 moves, and the LM guide rail 5321 and the LM guide block 6323 It is preferably composed of.

Of course, path formation due to the LM guide rail 6321 and the LM guide block 6323 can be applied to the X-axis transfer unit 310 and the Y-axis transfer unit 210 as well.

The reason why the first guide part 632 and the second guide part 633 are formed at the same time is to facilitate the rotation in the Ys direction while easily supporting the load of the second head part 600.

In this case, a power unit 634 is formed between the first guide unit 632 and the second guide unit 633, so that the second head unit 600 can be moved.

The power unit 634 is constituted by a motor unit 6339 and a ball screw unit 6432.

The ball screw part 6432 for converting rotational force into linear motion is connected to the second head part 600, and by the rotation of the motor part 641, the ball screw rotates and the ball screw rotates in the Z-axis direction. 2 The head part 600 is configured to be rotated.

At this time, since the load of the first head part 500 and the second head part 600 is significant, when only the first guide part 632, the second guide part 633, and the power part 634 are configured, After rotation in the Z-axis direction, the position in the Y-axis direction may not be clear.

Therefore, the following first fixed clamp portion 6323 and the second fixed clamp portion 6331 are further provided.

The first fixed clamp part 6323 and the second fixed clamp part 6331 are connected to the first guide part 632 and the second guide part 633, respectively, and when operated by a preset command, The position is fixed, and it is provided to limit the occurrence of Ys-axis displacement.

The first fixed clamp portion 6323 and the second fixed clamp portion 6331 may have any shape as long as the rotation of the second head portion 600 in the Ys-axis direction can be effectively restricted.

More specifically, the first fixed clamp portion 5323 and the second fixed clamp portion 6331 are formed adjacent to the LM guide block 6322, and when a command for fixing is generated, the LM guide rail 6321 The LM guide block 6322 may be fixed in a manner to maximize the frictional force with respect to.

Next, the pallet part 700 may be selectively mounted on the upper part of the table part, and the work piece may be mounted on the upper surface thereof.

The pallet part 700 is a portion on which the work piece is directly mounted, and may be configured in any shape as long as the work piece can be easily mounted.

In addition, the pallet part 700 may be formed in any form as long as it is quickly replaced through the following pallet exchange part 800 and can be seated on the table part 400.

Next, the pallet exchange part 800 is formed to be spaced apart from the front side of the bed part 200, so that the exchange may be performed by rotating the plurality of pallet parts 700.

Specifically, the pallet exchange part 800, as shown in Figs. 1 and 2, the base part 810, the frame part 820, the rotating part 830, the female receiving part 840, the first arm part It is configured to include (850), the second arm (860).

First, the base portion 810 has a height and is provided to support a lower portion.

The base portion 810 has an accommodation space formed therein, and thus wiring and electric circuits that can be connected to and disconnected from the machining center body may be configured.

In addition, it will be apparent that a friction surface in a shape capable of easily supporting the floor surface must be formed so that sliding does not occur due to the lubricating oil and cutting oil scattered on the floor surface.

Next, the frame portion 820 is provided on the upper portion of the base portion 810 in a “C” shape in which an opening portion is formed downward.

The frame unit 820 may be configured in any shape as long as it is a frame in which the following rotation unit 830 can be easily mounted and rotated.

Preferably, a height can be formed on the upper surface of the base portion 810, and it is advantageous to be configured in a shape that can minimize the volume.

Next, the rotation unit 830 is selectively rotated by connecting a rotation axis perpendicular to the ground through the center of the frame unit 820.

Specifically, the rotating part 830, as shown in FIG. 6, is configured to include a center support part 831, an elevating part 832, a rack pinion part 833, and a hydraulic pressure supply part 834.

First, the center support part 831 is connected to the center of the female receiving part 840 below in a bar shape perpendicular to the ground.

Next, the elevating portion 832 is provided so that the center support portion 831 can elevate and descend.

Specifically, it is configured in a cylinder shape inside the rotating part 830, and the cylinder is constructed in a form capable of lifting and descending upward and downward by hydraulic or pneumatic pressure inside the rotating part 830, and the center Connected to the upper end of the support portion 831, and formed connected to the center support portion 831 and the center support portion 831, the following female receiving portion 840, the first arm portion 850, the second arm portion 860 The whole is configured to be able to lift and lower.

Next, the rack and pinion part 833 is formed inside the rotation part 830 and is provided to rotate the center support part 831 by 180° in the form of a rack and pinion gear.

Specifically, in the rack and pinion part 833, a rack gear provided in a direction parallel to the ground is formed inside the rotation part 830, and a pinion gear provided to be rotatable by meshing with the rack gear is formed. .

Like the elevating part 832, it is configured in a form in which hydraulic or pneumatic is easily supplied, and by supply of hydraulic or pneumatic, the rack gear is configured to reciprocate in a direction parallel to the ground, and the pinion The gear is rotated by the rack gear, and the rack gear is connected to the center support part 831 and is provided to be rotated together.

At this time, by controlling the longitudinal movement of the rack gear, when the rack gear is moved, the pinion gear is configured to be rotated 180°, which is sequentially rotated by 180° and -180° by moving and reciprocating the rack gear. It is provided so that the rotation can be repeated.

Through this, the center support part 831 rotates integrally with the rack gear, and finally, position exchange through rotation of the pallet part 700 may be induced.

Next, the hydraulic pressure supply unit 834 forms a line through which hydraulic pressure or pneumatic pressure can be supplied from the top.

Specifically, in the hydraulic pressure supply unit 834, a nozzle capable of supplying hydraulic pressure and pneumatic pressure is formed at an upper side of the rotation unit 830, and a supply line communicating with the nozzle is formed through the inner peripheral surface of the rotation unit 830 Thus, it is provided to supply hydraulic pressure or pneumatic pressure to the lower portion of the rotating part 830 or to the inside of the base part 810.

Through the supply of hydraulic pressure or pneumatic pressure, it may be selectively connected to and supplied to a jig or other tools requiring hydraulic pressure and pneumatic pressure.

Through this, it is possible to eliminate anxiety factors such as a twisting phenomenon of a line or a line jamming of a worker's foot, which may occur through rotation of the rotating components of the rotating part 830 while the supply line is located below.

At this time, it will be apparent that each component of the rotation unit 830 is controlled by a control unit of the machining center and must be provided to be organically rotated in conjunction with the table unit 400.

Next, the male and female receiving portion 840 is formed connected to the end of the rotating portion 830 in a bar shape.

Specifically, the female receiving portion 840 is provided to be connected to the lower end of the center support portion 831, and as shown in FIG. 7, the following first arm portion 850 and the second arm portion ( The 860 can be easily supported, and the first arm 850 and the second arm 860 described below may be configured in any form as long as they are accommodated inwardly through rotation.

Next, the first arm portion 850 is formed on both ends of one side of the female receiving portion 840 and is provided to selectively mount the pallet portion 700.

The first arm portion 850 is formed on both ends of one side of the female receiving portion 840, and is provided to be selectively rotatable, as shown in FIG. 7.

When the first arm portion 850 is selectively rotated and unfolded as shown in FIG. 7B, it is configured in a form capable of mounting the pallet portion 700.

When the pallet part 700 is separated from the first arm part 850, it is folded as shown in (a) of FIG. 7 and is provided to be closely accommodated in the female receiving part 840.

Next, the second arm portion 860 is formed on both ends of the other side of the female receiving portion 840 and is provided to selectively mount the pallet portion 700.

The second arm portion 860 may be formed at both ends of the other side of the female and receiving portion 840 and may be configured to have the same shape as the first arm portion 850 and rotated.

As shown in FIG. 1, through the pallet exchanger 800 configured as described above, the working space P can be easily secured.

In addition, compared to a system in which the pallet is exchanged by fixing only a part of the upper or the side through a conventional hook, the first arm portion 850 and the second arm portion ( By 860, it may be possible to exchange work of the pallet 700 and the workpiece having a higher load.

Hereinafter, a process of operating the pallet exchanger 800 of the machining center according to the present invention will be described with reference to FIG. 8.

First, as shown in (a) of FIG. 8, the table part 400 is moved in the X-axis direction so that the pallet part 700 A, which is already seated, is located at a part corresponding to the pallet exchange part 800. Control.

Next, through the movement of the saddle part 300, as shown in FIG. 8(c), the pallet part 700 A is moved in the Y-axis direction so that the pallet part 700 A can move in the direction of the pallet exchange part 800.

At this time, the first arm portion 850 is provided so that the pallet portion 700 A can be seated by being unfolded to the outside through rotation in advance as shown in FIG. 8B.

After the pallet part 700 A is seated on the first arm part 850, as shown in FIG. 8(d), the center support part 831 is moved up and down by the driving of the lifting part 832, thereby Accordingly, the pallet portion seated together with the female receiving portion, the first arm portion, and the second arm portion is raised together.

Next, by the rotation of the rack and pinion portion 833, the female receiving portion 840 is rotated 180° together with the center support portion 831 as shown in (e) of FIG. 8.

Through this, after being rotated, the positions of the pallet parts 700 A and B are exchanged so that the pallet parts 700 and B are seated on the table part 400.

After the pallet part 700 B is seated on the table part 400, as shown in FIG. 8(f), the center support part 831 descends by the configuration of the lifting part 832 Accordingly, all of the pallet parts 700 A and B descend.

It will be apparent that when the pallet part 700 is rotated for exchange by the configuration of the lifting part 832, it is completely separated from the configuration that becomes an obstacle to rotation, so that the exchange can be easily rotated.

Next, after the pallet part 700 B is seated on the table part 400, as shown in (g) and (h) of FIG. 8, the saddle part 300 is in the Y-axis direction, contrary to the above order. And the table part 400 moves in the X-axis direction to position the pallet part 700 B at a position corresponding to the first spindle 500 and the second spindle 600.

At this time, after the pallet part 700 and B are separated, the second arm part 860 supporting the pallet part 700 and B is folded into the female receiving part 840 through rotation.

Through repetition of the above process, the pallet part 700 can be easily exchanged.

As described above, it will be understood that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art.

Therefore, the embodiments described above are to be understood as illustrative and non-limiting in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and the All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

100: column part
200: bed part
210: Y-axis transfer unit
300: saddle part
310: X-axis transfer unit
400: table part
500: first head portion
510: 1st Z axis transfer unit
520: first spindle
600: second head portion
610: 2nd Z axis transfer unit
620: second spindle
630: Y-axis fine displacement
631: slope
632: first guide part
6321: LM guide rail
6322: LM guide block
6323: first fixed clamp part
633: second guide part
6331: second fixed clamp part
634: power unit
6341: motor part
6342: ball screw part
700: pallet
800: pallet exchanger
810: base part
820: frame part
830: rotating part
831: Center support
832: elevator
833: rack pinion part
834: hydraulic pressure supply unit
840: female receiving part
850: first arm part
860: second arm part
P: Workspace

Claims (5)

Column part;
A bed part connected to the front side of the lower part of the column part and provided in a plate shape parallel to the ground;
A saddle part connected by a Y-axis transfer unit on the upper side of the bed part and provided to be movable in the Y-axis direction;
A table part connected by an X-axis transfer unit to the upper side of the saddle part and provided to be movable in the X-axis direction;
It is formed on the front side of the upper portion of the column part, provided to be movable in the Z-axis direction by a first Z-axis transfer unit, a first spindle; a first head part formed;
It is formed on the front side of the upper portion of the column, is provided to be movable in the Z-axis by a second Z-axis transfer unit; a second spindle; is formed, and is formed in parallel on the first head and the X-axis. 2 heads;
A pallet part which may be selectively mounted on the upper part of the table part and provided so that a work piece may be mounted on the upper surface;
Including; a pallet exchanger formed to be spaced apart from the front side of the bed part, provided to be exchanged through rotation of the plurality of pallets,
In order to compensate for a minute displacement in the Y-axis direction in the first or second head portion, the first or second head portion is controlled to enable a fine movement in the Y-axis direction. Displacement unit; APC-applied vertical machining center having a central rotating portion, characterized in that further provided. The method of claim 1,
The pallet exchange unit,
A base portion having a height and provided to support a lower portion;
A frame portion provided above the base portion in a'C' shape in which an opening portion is formed downward;
A rotating part through which a rotating shaft perpendicular to the ground is connected through the center of the frame part to selectively rotate;
A male and female receiving portion connected to the end of the rotating portion in a bar shape;
A first arm portion formed on both ends of one side of the female receiving portion and provided to selectively mount the pallet portion;
And a second arm portion formed on both ends of the other side of the female receiving portion and provided to selectively mount the pallet portion. A vertical machining center for APC having a central rotation portion, comprising: a. The method of claim 2,
The first arm portion and the second arm portion,
An APC-applied vertical machining center having a central rotating part, characterized in that it is provided to be selectively hinged to rotate, and is provided to be folded inward when the pallet part is not mounted. delete The method of claim 1,
The Y-axis fine displacement portion,
An inclined portion provided in a plate shape having an inclined surface between a rear surface of the first or second head portion and the column portion;
A first guide part formed on one side of the front side of the inclined part and having an inclined rail formed in the Z-axis direction;
A second guide part formed on the other side of the front side of the inclined part and having an inclined rail parallel to the first guide part;
A power unit that is formed in the middle on the front of the inclined portion to provide power capable of being displaced in the Z-axis direction; And
A vertical type APC applied with a central rotation unit comprising a; displacement control unit for controlling the fine displacement movement in the Y axis direction through the control of the first guide unit, the second guide unit, and the second Z axis transfer unit. Machining center.

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