KR102462832B1 - Machining center for machining large workpieces - Google Patents

Abstract

The present invention relates to a machining center for machining a large workpiece which can improve versatility. The machining center for machining a large workpiece comprises: a bed fixed and installed on the ground and having a prescribed area; a main body consisting of post parts vertically arranged on both sides of the bed, and a lateral bar connecting both post parts and separated from an upper portion of the bed; a table having rollers coupled to a rail formed on an upper portion of both sides of the bed and formed on a lower portion of both sides thereof to be coupled to be moved forward and backward; a table driving part having a power source connected to the rollers of the table to drive the rollers to rotate the rollers to move the table; a jig mounted on the upper surface of the table, and allowing a large workpiece to be placed thereon; a fixing means to fix the jig at a prescribed position of the table; a moving part coupled to the lateral bar of the main body; an attachment mounting part formed on a lower portion of the moving part and allowing an attachment to be mounted thereon; and an attachment driving part laterally or longitudinally moving the attachment mounting part.

Description

Machining center for machining large workpieces

The present invention relates to a machining center for processing large workpieces.

In general, machining centers are NC machine tools that automatically process workpieces that require various operations such as milling, boring, hole drilling, and thread cutting. It is a machine tool with the function of positioning to fit the

The machining center generally includes a bed, a saddle installed on the top of the bed, a table installed on the saddle on which a workpiece is placed, a column vertically mounted on the rear of the bed, and a column mounted on the column. It is composed of a spindle and a power transmission means and control means for driving and operating the spindle.

The prior art has a small volume because it is intended for a machining operation on a roughly small workpiece. However, when the workpiece is large, for example, a large workpiece having a size of about 3 × 8 m in width × length is difficult to work with.

Republic of Korea Patent Registration No. 10-2175181

The present invention has been devised to solve the problems of the prior art, and automatically performs processing such as milling, boring, drilling, and cutting of a metal workpiece, and a relatively large-sized large-sized product with a horizontal × vertical length of 3 × 8 m. An object of the present invention is to provide a machining center for processing large workpieces that enables various operations on the workpiece.

The above object of the present invention, a bed fixed to the ground and having a predetermined area; a main body formed of a horizontal bar disposed vertically on both sides of the bed and connected to the pillars on both sides and spaced apart from each other; a table in which rollers coupled to the rails formed on both sides of the bed are respectively formed in the lower portions of both sides to move forward and backward; a table driving unit connected to the roller of the table and having a power source for driving the roller to rotate the roller to move the table; a jig mounted on the upper surface of the table and capable of seating a large workpiece; fixing means for fixing the jig at a predetermined position on the table; a mobile unit coupled to the transverse bar of the main body, and an attachment mounting unit formed under the moving table and mounted with an attachment; It is achieved by a machining center for processing a large workpiece including; an attachment driving unit for moving the attachment mounting unit in the transverse or longitudinal direction.

a locking part for fixing the table to a predetermined position after moving the table; It is formed and characterized in that it comprises a plurality of fixing grooves into which the tip of the pressure rod is inserted and fixed.

The attachment mounting unit is characterized in that it comprises a; attachment exchange device for attaching and detaching the attachment having a machining angle and length in order to improve the workability for the work piece.

The attachment exchange device has a flange in close contact with the attachment mounting portion formed on the upper portion, a body having a spindle shaft inserted therein, and a head having a universal joint hinged to the lower portion of the body and rotationally driven; and detachable from the head. It is characterized in that it comprises a grinding tool coupled to the spindle shaft and rotationally driven.

The attachment driving unit includes: a lateral driving means for mounting a rack gear formed on the upper portion of the main body in a longitudinal direction; It is characterized in that it comprises a longitudinal driving means consisting of hydraulic cylinders respectively inserted into the main body coupled to both sides.

and a chip removing unit for cleaning the upper surface of the table, wherein the chip removing unit includes a slide groove formed parallel to both short sides of the table, a bracket inserted into the slide groove, and connected to both brackets and connected to the upper surface of the table It is characterized in that it comprises a shaft having a length corresponding to the long side of the table and having a brush in contact with it, and a cylinder unit for repeatedly moving the shaft along the slide groove by horizontally moving the shaft.

and chip discharging units formed on both sides of the bed to collect chips detached from the upper surface of the table, wherein the chip discharging unit includes a conveying groove formed on both long sides of the bed and collecting chips, and the conveying groove It is inserted and characterized in that it comprises a brush shaft having a spiral brush formed on the outer circumferential surface, and a motor connected to one end of the brush shaft to exert a rotational force.

and a chip collecting unit formed to pass through an end of the chip discharging unit to collect chips, wherein the chip collecting unit includes: a lifting box in which the chips are accommodated; an elevating unit configured to elevate the elevating box; a guide frame coupled to the outside of the opening of the chip discharging unit and having a vertical portion guiding one surface of the elevating box along the moving direction of the elevating box, and an inclined portion disposed at an upper end of the vertical portion inclined downward to guide chips discharged from the elevating box; and a collection tray disposed under the lifting unit and storing chips therein.

According to the present invention, machining such as milling, boring, drilling, and cutting of a metal work is automatically performed, and various operations are possible for a large work, so that versatility can be further improved.

1 is a perspective view showing a machining center for processing a large workpiece according to the present invention;
2 is a front view showing a machining center for processing a large workpiece according to the present invention;
3 is a plan view showing a machining center for processing a large workpiece according to the present invention;
4 is a side view showing a machining center for processing a large workpiece according to the present invention;
5 is an enlarged view showing the structure of a table and a bed in a machining center for processing a large workpiece according to the present invention;
6 is a perspective view showing a chip removal unit and a chip discharge unit of the table in a machining center for processing a large workpiece according to the present invention;
7 is a view showing an 'attachment exchange device' in a machining center for processing a large workpiece according to the present invention;
8 is a view showing a 'chip collection unit' according to another embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to a specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected” to another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

Terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are assigned the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. have meaning Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. When 'include', 'have', 'consist', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

Reference to an element or layer “on” another element or layer includes any intervening layer or other element directly on or in the middle of another element. Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be independently implemented with respect to each other. It may be possible to implement together in a related relationship.

Among the accompanying drawings, FIG. 1 is a perspective view showing a machining center for processing a large workpiece according to the present invention, FIG. 2 is a front view showing a machining center for processing a large workpiece according to the present invention, and FIG. 3 is a large size according to the present invention A plan view showing a machining center for processing a workpiece, Figure 4 is a side view showing a machining center for processing a large workpiece according to the present invention, Figure 5 is a machining center for processing a large workpiece according to the present invention showing the structure of a table and a bed An enlarged view, FIG. 6 is a perspective view showing a chip removal unit and a chip discharge unit of a table in a machining center for processing a large workpiece according to the present invention, and FIG. 7 is an 'attachment exchange device' in a machining center processing a large workpiece according to the present invention 8 is a view showing a 'chip collecting unit' according to another embodiment of the present invention.

Machining center for processing large workpieces according to the present invention,

a bed 100 fixed to the ground and having a predetermined area;

The main body 200 consisting of a column part 220 disposed vertically on both sides of the bed 100, and a transverse bar 240 that connects the column parts 220 on both sides and is spaced apart from the upper part of the bed 100;

The rollers 310 coupled to the rails 120 formed on both sides of the bed 100 are respectively formed in the lower portions of both sides, and the table 300 is coupled to move forward and backward;

a table driving unit 400 connected to the roller 310 of the table 300 and having a power source for driving the roller 310 to rotate the roller 310 to move the table 300 ;

It is mounted on the upper surface of the table 300, a jig 360 capable of seating a large workpiece (R);

Fixing means 600 for fixing the jig 360 at a predetermined position of the table 300;

a mobile unit 720 coupled to the transverse bar 240 of the main body 200, and an attachment mounting unit 700 formed under the moving table 720 and mounted with an attachment (M);

It is configured including a;

The bed 100 is formed in a rectangular plate shape, and the rail 120 having a predetermined length parallel to the long side or the short side is formed on the upper surface.

Referring to FIG. 5 , the table 300 has rollers 310 coupled to the rails formed on both sides of the bed 100 are respectively formed in the lower portions of both sides and seated on the top of the bed 100 so that the table 300 is a table. It is movably coupled to the front and rear from the upper portion of the bed 100 by the driving unit 400 .

The table driving unit 400 includes a power source M2 for driving the roller 310 , and the power source M2 may be a motor.

Therefore, by driving the roller 310 by the driving of the power source M2, the table 300 can be moved in the front-rear direction.

Herein, the front-rear direction is defined as the rear to the left in FIG. 4 and the front to the right.

After moving the table 300 in this way, a locking unit 340 for fixing it at a predetermined position; may be further included.

The locking part 340 according to an example is mounted on both lower sides of the table 300 and includes an actuator 344 having a pressure rod 342 drawn out in the horizontal direction, and a plurality of both sides of the bed 100 outside. It is formed in a concave shape, and is composed of a plurality of fixing grooves 346 into which the tip of the pressing rod 342 is inserted and fixed.

The actuator 344 may be a hydraulic cylinder, and when the hydraulic pressure is supplied to the actuator, the pressing rod 342 is drawn out from the actuator 344 and inserted into the fixing groove 346 to be in a locked state, and vice versa, the pressing rod 342 When is drawn in, since it is separated from the fixing groove 346, it may be in a released state.

Therefore, after moving the table 300 to an appropriate position, for example, moving the table 300 forward or backward to set an appropriate position, the fixing means 600 is operated to be in a locked state, and then the work on the work R will be carried out

The jig 360 is mounted on the upper surface of the table 300, can seat the large workpiece R, and a fixing means 600 for fixing the jig 360 at a predetermined position of the table 300 may be included. have.

Referring to FIG. 6 , the fixing means 600 includes a slit groove 610 formed on the upper surface of the table 300 and a fastening bolt 630 screwed to the bracket 620 formed on the lower outer side of the jig 360 . and a socket 640 screwed to the tightening bolt 630 and fitted into the slit groove 610,

The socket 640 has a coupling groove 642 having a thread therein, a plurality of cut-out grooves 643 are formed at the lower portion, and a plurality of adhesion pieces 644 are formed between the cut-out grooves 643 , , The coupling groove 642 is made of a tapered shape that decreases in diameter toward the bottom, and the tightening bolt 630 is inserted into the coupling groove 642 and the close contact piece is spread outwardly. can be stationary.

Preferably, a plurality of protrusions may be formed on the outer surface of the contact piece 644 by knurling to have frictional force.

On the other hand, the attachment mounting unit 700 is formed in the lower portion of the moving table 720 provided on the transverse bar 240 of the main body 200 and is formed so that the attachment (T) can be mounted.

The attachment M includes a grinding tool 790 , and refers to a tool that can be detachably attached to the attachment mounting unit 700 .

The moving table 720 is coupled to the transverse bar 240 of the main body 200, and the rail 120 is formed parallel to the upper and lower sides of the transverse bar 240, and both ends of the moving table 720 are upper and lower rails, respectively. It is fitted to the 120 , and rollers 310 are provided at both ends of the moving table 720 , thereby making it possible to horizontally move left and right along the transverse bar 240 .

Since the attachment mounting part 700 is formed in the lower part of the moving table 720, it can be moved in conjunction with the movement of the moving table 720, so that the work such as an end mill and a ball mill for the workpiece R can be performed continuously left and right. have.

In addition, the attachment mounting driving unit 760 includes an X-axis movement unit having an X-axis power unit for moving the attachment mounting unit 700 in the X-axis direction (forward/backward direction), and the attachment mounting unit 700 in the Z-axis direction (win). It includes a Y-axis movement unit having a Z-axis power unit for moving the Z-axis power unit and a Y-axis power unit for moving the attachment mounting unit 700 in the Y-axis direction (left and right direction).

Referring to FIG. 1 , the attachment driving unit 800 includes a rack gear 822 formed on the upper portion of the main body 200 in the longitudinal direction, and a pinion gear 823 geared to the rack gear 822 . One motor 824 is a lateral drive means 820 mounted on the upper portion of the moving table 720, and a hydraulic cylinder inserted into the inside of the both side pillars 220 and coupled to both sides of the main body 200, respectively. longitudinal drive means 840 consisting of 842 .

Therefore, according to the signal of the control unit, the attachment mounting unit 700 can be operated left and right, forward and backward, and ascending and descending, so that it is possible to easily set the appropriate height and coordinates for the work.

On the other hand, the attachment mounting unit 700 includes an attachment exchange device 780 for attaching and detaching an attachment having a machining angle and length in order to improve the workability for the work (R).

Referring to FIG. 7 , the attachment exchange device 780 has a flange 781 that is in close contact with the attachment mounting part 700 is formed on its upper portion, and a body 782 into which a spindle shaft is inserted, and the body 782 . A head 784 having a universal joint which is hinged to the lower portion of the rotatable shaft, and a grinding tool 790 that is detachably coupled to the head 784 and is connected to the spindle shaft to rotate.

The grinding tool 790 may be of various types to be suitable for the processing shape, and is usually used for grinding and grinding the surface of an object by high-speed rotation.

On the other hand, it may include a; chip removal unit (3) for cleaning the upper surface of the table (300). It means the fine particles generated during various grinding and polishing of chips, and if they are not removed, the work will be disturbed, so the chips should be removed at appropriate times.

Referring to FIG. 6 , the chip removing unit 3 includes slide grooves 302 formed parallel to both short sides of the table 300 , a bracket 304 inserted into the slide groove 302 , and both brackets ( A shaft 305 connected to 304 and contacting the upper surface of the table 300 is formed and a shaft 305 having a length corresponding to the long side of the table 300, and a slide groove 302 by moving the shaft 305 laterally. It includes a cylinder unit 306 to be repeatedly moved along.

Therefore, the cylinder unit 306 is driven, and the brush sweeps the upper surface of the table 300 while the shaft 305 moves along the slide grooves 302 on both short sides of the table 300 to remove chips. there will be

Meanwhile, the chips removed by sweeping the upper surface of the table 300 should be collected and collected.

Accordingly, it is formed on both sides of the bed 100, the chip discharging unit 4 for collecting and discharging the chips separated from the upper surface of the table 300; may be included.

The chip discharging part 4 is formed on both long sides of the bed 100 and includes a transfer groove 42 for collecting chips, a brush shaft 44 inserted into the transfer groove 42 and having a spiral brush formed on the outer peripheral surface thereof, and , may include a motor (not shown) connected to one end of the brush shaft 44 to exert a rotational force.

Therefore, the brush shaft 44 is rotated by the driving of the motor, and the chips can be discharged to the outlet of the transfer groove portion 42 by the spiral rotation of the brush.

Meanwhile, referring to FIG. 8 , a chip collecting unit 2 configured to pass through the end of the chip discharging unit 4 to collect chips is included.

The chip collecting unit (2), the chip collecting unit (2), a lifting box 21 in which the chip is accommodated; an elevating unit 22 configured to elevate the elevating box 21; A vertical portion 231 coupled to the outside of the opening of the chip discharging unit 100 and guiding one surface of the lifting box 21 along the moving direction of the lifting box 21, and an upper end of the vertical portion 231 inclined downward a guide frame 23 having an inclined portion 232 for guiding the chips discharged from the elevating box 21; It is arranged in the lower portion of the lifting unit 22, the collection tray 500 in which the chip is stored; is configured to include.

The elevating box 21 has a front portion and a rear portion open, and a bottom surface is disposed to be inclined downward from the rear portion toward the front portion.

The elevating box 21 has a chip C accommodated therein, and may be elevated by the elevating unit 22 .

The elevating box 21 may have a front portion and a rear portion open, and a bottom surface may be disposed to be inclined downwardly from the rear portion toward the front portion.

When the chip (C) is put into the elevating box 21, the elevating unit 22 elevates the elevating box 21 while repeatedly elevating the elevating box 21 while shaking the chip C to make it uniform, then elevating and lowering the elevating box 21. The elevating box 21 is raised so that the chip accommodated in the box 21 is discharged to the inclined portion, and the front portion of the elevating box 21 is brought close to being connected to the inclined portion 232 .

The elevating unit 22 may be configured to elevate the elevating box 21 .

The lifting unit 22 is coupled to the vertical portion 231 and rotatably coupled to the guide rail 221 , which is disposed parallel to the vertical portion 231 , and the lifting box 21 to the outer surface of the guide rail 221 . It may include a guide roller 222 configured to be in contact with and move along the outer surface of the guide rail 221 when the lifting box 21 is lifted.

The elevating unit 22 may include a support bracket 223 coupled to the upper end of the guide rail 221 , and a connection member 224 coupled to the elevating box 21 and disposed inside the elevating box 21 . have.

The elevating unit 22 is installed and supported on the support bracket 223 , one end is coupled to the connecting member 224 , and stretches and contracts along the longitudinal direction of the guide rail 221 to press the connecting member 224 to the elevating box. and a lifting cylinder 225 configured to raise and lower the 21 .

The guide frame 23 is coupled to the housing 100 and inclined downwardly on one side of the elevating box 21 along the moving direction of the elevating box 21 to preheat the chips discharged from the elevating box 21 to the preheating unit 160 . ) may include an inclined portion 232 for guiding into.

Therefore, when the chip (C) is supplied to the lifting box 21, the lifting unit 22 repeatedly raises and lowers the lifting box 21 by shaking the chip to make it uniform.

Thereafter, when the lifting unit 22 is driven and the lifting box 21 is raised to the top, the chip C is discharged to the inclined portion 232 , and the chip moves along the inclined portion 232 to the collection tray 500 . can be transferred to

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

2: chip collecting unit 3: chip removing unit
4: chip discharge part 22; lift unit
100: bed 200: body
300: table 310; Roller
340: locking unit 360: jig
600: fixing means 610: slit groove
630: tightening bolt 640: socket
700: attachment mounting unit 720: mobile stand
760: attachment mounting driving unit 800: attachment driving unit
820: transverse driving means 840: longitudinal driving means

Claims (3)

a bed fixed to the ground and having a predetermined area;
a main body formed of a horizontal bar disposed vertically on both sides of the bed and connected to the pillars on both sides and spaced apart from each other;
a table in which rollers coupled to the rails formed on both sides of the bed are respectively formed in the lower portions of both sides to move forward and backward;
a table driving unit connected to the roller of the table and having a power source for driving the roller to rotate the roller to move the table;
a jig mounted on the upper surface of the table and capable of seating a large workpiece;
fixing means for fixing the jig at a predetermined position on the table;
a mobile unit coupled to the transverse bar of the main body, and an attachment mounting unit formed under the moving table and mounted with an attachment;
an attachment driving unit for moving the attachment mounting unit in a transverse or longitudinal direction;
a locking part for fixing the table to a predetermined position after moving the table; and
The locking part
An actuator equipped with a pressure rod mounted on both sides of the table and drawn out in the horizontal direction;
A plurality of concave recesses are formed on both sides of the bed and include a plurality of fixing grooves into which the tip of the pressure rod is inserted and fixed,
a chip removing unit for cleaning the upper surface of the table;
The chip removal unit
A shaft having slide grooves formed parallel to both short sides of the table, brackets inserted into the slide grooves, brushes connected to both brackets and contacting the upper surface of the table, and having a length corresponding to the long sides of the table; and a cylinder unit for repeatedly moving the shaft along the slide groove by moving the shaft horizontally,
and a chip discharge unit formed on both sides of the bed to collect chips separated from the upper surface of the table.
The chip discharge unit,
A transfer groove formed on both long sides of the bed for collecting chips, a brush shaft inserted into the transfer groove and having a spiral brush formed on an outer peripheral surface thereof, and a motor connected to one end of the brush shaft to exert a rotational force,
a chip collecting unit formed to pass through an end of the chip discharging unit to collect chips;
A machining center for processing large workpieces comprising a. The method of claim 1,
The attachment mounting unit includes a; attachment exchange device for attaching and detaching an attachment having a machining angle and length in order to improve workability for the work piece;
The attachment exchange device is
A flange in close contact with the attachment mounting portion is formed on the upper portion, a body having a spindle shaft inserted therein, a head having a universal joint hinged to a lower portion of the body and rotationally driven, and a head detachably coupled to the head, the head being detachably coupled to the head. It includes a grinding tool that is connected to the spindle shaft and is driven by rotation,
The attachment driving unit,
a lateral drive means in which a motor having a rack gear formed on the upper portion of the main body in a longitudinal direction and a pinion gear geared to the rack gear is mounted on an upper portion of a moving table;
a longitudinal driving means respectively inserted into the inside of the both sides of the pillars and consisting of hydraulic cylinders coupled to both sides of the main body;
Machining center for processing large workpieces comprising a. delete

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