TECHNICAL FIELD

The present invention relates to a center hole formed on the forehead section of the metal-derived and solid-structured workpiece which provides proper removal of the sawdust from the workpiece by means of obtained linear rotational motion achieved by realizing the process of fixing one end on the mirror of the turning lathe and engaging the other end to the center so as to remove sawdust from the metal-derived and solid- structured materials (workpieces) that compose the semi-product of the parts to be produced in many sectors such as automotive, machinery, etc.

The present invention particularly relates to the machine in which the center hole that ensures proper removal of the sawdust from the workpiece by means of linear rotational motion achieved by realizing the process of fixing one end on the mirror of the turning lathe and engaging the other end to the center so as to remove sawdust from the metal- derived and solid-structured materials (workpieces) that compose the semi-product of the parts to be produced in many sectors such as automotive, machinery, etc. is made automatically during the process of length cutting of the metal-derived and solid- structured workpiece with circular or polygon section is performed on the fast cutting circular sawing machine, which is designed for eliminating the requirement of a second operation for making an external center hole on the turning lathe, thus decreasing the number of operations and decreasing the production costs;

- is connected to the ground with a balanced and zeroed manner by making the height adjustment from its adjustable feet such that it comes to the front section of the fast cutting circular sawing machine, performs the center hole making process on the forehead section while the workpiece is cut, by means of the center drill rotating with the rotational motion received from the electric motor, while the roller feet of the mirror in the drilling mechanism that centers the workpiece by grasping the same externally and eliminates possible vibrations, when the center drill of the drilling mechanism located on the carriage engaged to the main chassis together with entering the diameter/thickness and cutting distance (x, y and z-axis coordinates) of the workpiece according to the center of the center hole (at the center or out of the center) to be formed on the workpiece which is cut in the fast cutting circular sawing machine, is zeroed automatically by the y-axis movement mechanism and z-axis movement mechanism, then moves in the direction of x- axis by the x-axis movement mechanism.

PRIOR ART

Today, turning lathes are used to remove sawdust from metal-derived circular or polygonal section solid materials (workpieces) which constitute semi-products of the parts to be produced in many sectors such as automotive and machinery.

Solid, metal-derived material is supplied in long rods and cut lengthwise in the band sawing machine before the sawdust removal process is carried out on the turning lathes on the workpieces. Band saw performs the length cutting process of the workpieces for a long period of time. This increases the duration of cutting the parts. Based on the developing technology, fast cutting circular sawing machines have been developed for cutting the workpieces so as to reduce the operating periods and to minimize costs accordingly.

Each workpiece with which length cutting process is carried out in the fast cutting circular sawing machine is fixed to the mirror so as to remove sawdust from the same. The workpiece shall be engaged between the mirror and the center in the turning lathe in order to rotate the workpiece linearly on the turning lathe and to remove sawdust from the same properly.

A center hole shall be made on the forehead section of one end of the workpiece so as to engage the workpieces between the mirror and the center on the lathe. In this process, each workpiece that was cut lengthwise in the fast cutting circular sawing machines is engaged to the mirror of the turning lathe and rotation of the mirror and thus the workpiece is ensured. While one end of the long parts is connected to the mirror, the rotation of the workpiece is enabled by means of engaging the other end section to the intermediate bearing that is located on the slide. Following this, a center hole is made in the forehead of the workpiece by means of the center drill which is engaged on the slides of the lathe.

Some disadvantages are seen in the formation of the center hole in the forehead section of the mentioned workpieces. These lead to the following;

- need for required labor, time loss and thus increase in the operating costs based on the requirement of various lifting tools such as hoist and cranes for operations based on the weight of the material such as lifting the workpieces with large diameter/thickness section, connecting the same to the mirror,

- increase in labor, time loss and thus increase in costs since there is an excessive operation during the connection of long workpieces between the mirror and the intermediate bearing,

- increase in labor, duration and thus cost in the serial production operations which have specifically high numbers as mentioned above,

- loss of labor, time and thus cost in the serial production operations having high numbers although there is no need to used lifting tools in the workpieces with small diameter/thickness section.

In the present state of the art, except solid materials, parts are cut in the fast cutting sawing machines in the cutting process of the pipe materials with a circular section. The wall thickness of the pipe material cannot be manufactured with the same thickness during the production of the pipe material. This leads to excessive removal of the sawdust since a complete centering in the inner or outer diameter of the hole of the workpiece from pipe material cannot be provided during the turning process in the connection process of the pipe material to the mirror of the lathe.

Also, the workpiece from pipe material cannot be connected to the mirror properly due to the cutting burrs formed on the end portions of the pipe materials after the cutting process. In order to eliminate this disadvantage, mentioned burrs are removed by applying an operation externally on the end portions of the workpiece from the pipe material and the connection of the workpiece to the lathe mirror is ensured. Since this duration increases the number of operations, it leads to an increase in the production equipment, duration, and all related costs.

As a result, an improvement is required to be made in the relevant technical field due to the disadvantages encountered in the state of the art and mentioned above.

AIM OF THE INVENTION

Due to the disadvantages in the prior art, the present invention aims to solve all described disadvantages.

The aim of the present invention is to provide a machine wherein the center hole which provides proper removal of the sawdust from the workpiece by means of obtained linear rotational motion achieved by realizing the process of fixing one end on the mirror of the turning lathe and engaging the other end to the center so as to remove sawdust from the metal-derived solid-structured materials (workpieces) that compose the semi-product of the parts to be produced in many sectors such as automotive, machine, etc., is made automatically during the process of length cutting of the metal-derived and solid- structured workpiece with circular or polygon section is performed on the fast cutting circular sawing machine, which is designed for eliminating the requirement of a second operation for making an external center hole on the turning lathe, thus decreasing the number of operations and decreasing the production costs;

- is connected to the ground with a balanced and zeroed manner by making the height adjustment from its adjustable feet such that it comes to the front section of the fast cutting circular sawing machine, performs the center hole making process on the forehead section while the workpiece is cut, by means of the center drill rotating by the rotational motion received from the electric motor, while the roller feet of the mirror in the drilling mechanism that centers the workpiece by grasping the same externally and eliminates possible vibrations, when the center drill of the drilling mechanism located on the carriage engaged to the main chassis together with entering the diameter/thickness and cutting distance (x, y and z-axis coordinates) of the workpiece according to the center of the center hole (at the center or off the center) to be formed on the workpiece which is cut in the fast cutting circular sawing machine, is zeroed automatically by the y-axis movement mechanism and z-axis movement mechanism, then moves in the direction of x- axis by the x-axis movement mechanism.

Another aim of the present invention is to provide the usage of the inventive machine which carries out the cutting process of the workpieces by producing the same separately, by locating the same on the ground such that it is in front of the currently used fast cutting circular sawing machine. Thus, the center hole making process on the forehead of the workpieces during the cutting process in currently used fast cutting circular sawing machines can be carried out. Therefore, the external center hole making process on the workpieces in the fast cutting circular sawing machines is eliminated and the required time, labor and related cost losses will be eliminated.

Another aim of the present invention is to produce the inventive machine which carries out center hole making process automatically during the cutting process of the workpieces in an integrated structure with the fast cutting circular sawing machine.

Another aim of the present invention is to provide engaging a cutter or countersink to be prepared in place of the center drill, in the machine which is used for making a center hole in the forehead section of the workpiece automatically by the center drill rotating by the rotational movement received from the electric motor. In this manner, during cutting of the hollow pipe materials in the fast cutting circular sawing machine, external operations are eliminated by providing the connection of the workpiece to the lathe mirror properly, since in/out hole turning and deburring processes are carried out during the cutting process of the workpiece.

During the length cutting process of solid workpieces in the fast cutting circular sawing machine, by means of the machine which is used for making a center hole on the forehead section of the workpiece automatically; since a center hole is made on the forehead section of the workpiece during the lengthwise cutting process;

- the machining process is commenced by means of directly connecting the workpiece in the turning lathe between the mirror-center, - since it is not required to make a center hole externally on the forehead section of the workpiece, the labor, time and related aspects due to external lifting equipment such as hoist, crane, etc. required so as to connect the workpieces with large diameter/thickness section to the lathe are eliminated, thus cost advantage in mass production is provided,

- since it is not required to make a center hole externally on the forehead section of the workpiece on the turning lathe, the labor, time and related costs of making a center hole on the workpieces with small diameter/thickness section are eliminated, thus cost advantage in mass production is enabled,

- since it is not required to make a center hole externally on the forehead section of the long workpiece on the turning lathe by taking the same between the mirror/intermediate bearing, the labor, time and related costs of making a center hole on the long workpieces are eliminated, thus cost advantage in mass production is enabled.

DESCRIPTION OF FIGURES

FIGURE 1 illustrates a representative perspective view of the inventive machine with mirror or without a mirror, used in making a center hole automatically on the forehead section of the solid workpieces in the fast cutting circular sawing machine during length cutting, in a manner such that it is located in front of the fast cutting circular sawing machine,

FIGURE 2 illustrates a representative perspective view of the inventive machine from the front angle used in making a center hole automatically on the forehead section of the solid workpieces in the fast cutting circular sawing machine during length cutting,

FIGURE 3 illustrates a representative perspective view of the inventive machine from the rear angle used in making a center hole automatically on the forehead section of the solid workpieces in the fast cutting circular sawing machine during length cutting, FIGURE 4 illustrates a representative perspective view of the main chassis of the inventive machine operating automatically,

FIGURE 5 illustrates a representative perspective and sectional view of the drilling mechanism of the inventive machine operating automatically,

FIGURE 6 illustrates a representative perspective and sectional view of the drilling mechanism of the inventive machine operating automatically, in a manner such that it is connected with the mirror,

FIGURE 7 illustrates a representative perspective view of the x-axis movement mechanism of the inventive machine operating automatically from different angles,

FIGURE 8 illustrates a representative perspective view of the y-axis movement mechanism of the inventive machine operating automatically from different angles,

FIGURE 9 illustrates a representative perspective and sectional side view of the z-axis movement mechanism of the inventive machine operating automatically, in a mounted manner,

FIGURE 10 illustrates the representative views of operation the z-axis movement mechanism of the inventive machine operating automatically, in an assembled manner,

FIGURE 11 illustrates the representative view of the center hole opening process to the workpiece by means of the inventive machine operating automatically.

REFERENCE NUMERALS

A. Machine

B. Fast cutting circular sawing machine

P. Workpiece

P1. Center hole 100. Main chassis

101 Adjustable foot

102 Cover plate

110 X-axis slide body

200. Carriage

201 Body

202 Z-axis shaft connection

203 Z-axis slide shafts

203.1 Z-axis slide bearings

204 Upper table

210 Drilling mechanism

211 Lantern

211.1 Rear cover

211.2 Roller

211.3 Felt

212 Spindle

212.1 Clip

212.2 Center drill

213 Mirror

213.1 Ring

213.2 Flange

213.3 Backing

213.4 Roller foot

213.5 Switch connection

213.6 Switch

214 Electric motor

215. Timing pulley

216. Timing belt

220. X-axis mechanism

221 X-axis linear slides

221.1 X-axis linear bearings

222. X-axis ball screw

223. X-axis ball nut

224. X-axis ball screw equivalent

225. X-axis servo motor 226. X-axis timing pulley

227. X-axis timing belt

230. Y-axis mechanism

231. Y-axis mechanism body

232. Y-axis linear slides

232.1 Y-axis slide bearings

233. Y-axis ball screw

234. Y-axis ball nut

235. Y-axis ball screw equivalent

236. Y-axis servo motor

237. Coupling

238. Y-axis fixing mechanism

238.1 Y-axis fixing connection

238.2 Y-axis fixing arm

238.3 Y-axis fixing shoe

238.4 Y-axis fixing bolt 240 Z-axis mechanism

241 Z-axis mechanism body

241.1 Motor connection

241.2 Spindle connection

242. Z-axis ball screw

243. Z-axis ball nut

244. Z-axis ball screw equivalent

245. Z-axis servo motor

246. Z-axis timing pulley

247. Z-axis timing belt

248. Z-axis fixing mechanism

248.1 Z-axis fixing shoe

248.2 Z-axis clamping piece

248.3 Z-axis fixing bolt

248.4 Z-axis fixing arm

300. Control unit

DETAILED DESCRIPTION OF THE INVENTION In this detailed description and in the figures that support the description, the machine (A) which performs center hole (P1) making process on the forehead section of the solid workpiece (P) in the fast cutting circular sawing machine (B) during the length cutting process is described. The inventive automatic working machine (A) can be located in the front section of the band saws which perform length cutting of the workpieces (P) instead of the fast cutting circular sawing machine (B) performing the cutting process of the workpiece (P). Therefore, the machine (A) can be used for making a center hole (P1) on the forehead section of the workpieces (P) during the cutting process in all sawing machines which can perform cutting processes of all kinds. In accordance with these explanations, the inventive automatic machine (A) should not be limited with the fast cutting circular sawing machine (B) mentioned in the detailed description and figures.

In Figure 1 , a representative perspective view of the inventive machine (B) located in front of the fast cutting circular sawing machine (B), which provides proper removal of the sawdust from the workpiece (P) by means of obtained linear rotational motion achieved by realizing the process of fixing one end on the mirror of the turning lathe and engaging the other end to the center so as to remove sawdust from the metal-derived solid-structured materials (workpieces (P)) that constitute the semi-product of the parts to be produced in many sectors such as automotive, machinery, etc., automatically performs center hole (P1) making process on the forehead section of the workpieces (P) that have different diameter/thickness as large/small.

As can be seen in Figures 1 , 2, 3 and 11 , the inventive machine (A) which is configured to perform the center hole (P1) making process automatically on the forehead section of the metal-derived workpieces (P) with different diameter/thickness section as large/small in the fast cutting circular sawing machine (B) during length cutting process is carried out, consists of the main elements as follows; the main chassis (100); carriage (200) and control unit (300).

As can be seen in Figure 4, the main chassis (100) preferably consists of rectangular profile material, it comprises the following; adjustable feet (101) in the lower section, which enables to locate the machine (A) on the ground in a balanced manner by means of making its height adjustment, cover plate (102) which covers opposite side sections,

- x-axis slide bodies (110) which enables to locate the carriage (200) on the upper section.

As can be seen in Figures 1 , 2 and 3, the carriage (200) located on the main chassis (100) consists of the following;

- body (201) which enables the connection of all elements of the carriage (200),

- z-axis shaft connection (202) which is connected to each edge section of the body (201),

- z-axis slide shafts (203) which are connected to z-axis shaft connections (202) connected on the body (201), comprise z-axis slide bearings (203.1) on them capable of moving up and down in the z-axis direction,

- upper table (204) connected to the upper part of the z-axis slide shafts (203) engaged with the body (201),

- drilling mechanism (210) which performs the center hole (P1) making process on the workpiece (P),

- x-axis movement mechanism (220) which provides movement of the drilling mechanism (210) thus the automatic movement of the carriage (200) in the direction of the x-axis,

- y-axis movement mechanism (230) which provides movement of the drilling mechanism (210) on the carriage (200) in the direction of Y-axis,

- z-axis movement mechanism (240) which provides automatic movement of the drilling mechanism (210) on the carriage (200) in the direction of the z-axis,

As can be seen in Figures 5 and 6, the drilling mechanism (210) of the inventive automatic working machine (A) comprises the following; Lantern (211) which is engaged stably to the z-axis movement mechanism (240) by means of the spindle connection (241.2), comprises a rear cover (211.1) fixed to the rear section, roller (211.2) engaged within both end sections and felt (211.3) that provides protecting the rollers (211.2) from negative effects as dust, sawdust,

- spindle (212) which is engaged to the lantern (211) by means of fitting the same to the rollers (211.2) located therein, wherein a center drill (212.2) is engaged to the clip (212.1) located at the end portion,

- mirror (213) which is fixed on the carriage (200) such that its center is in the same direction with the drilling mechanism (210) so as to enable centering the workpiece (P) and providing that is not affected by the vibration that occurs, during cutting the workpieces (P) in the saw machine (B) and making a center hole (P1),

- electric motor (214) which enables the rotational motion of the spindle (212) that is located by means of the rollers (211.2) in the inner section of the lantern (211) thus the center drill (212.2) by means of the rear section of the spindle (212) and timing belt (216) positioned on the timing pulley (215) engaged with the spindle.

In the drilling mechanism (210), a mirror (213) which operates any of the manually controlled, mechanically or automatically controlled, hydraulic or pneumatic manner is fixed on the carriage (200) such that its center is in the same direction with the drilling mechanism (210) so as to enable centering the workpiece (P) and providing that is not affected by the vibration that occurs, during cutting the workpieces (P) in the saw machine (B) and making a center hole (P1). Said mirror (213) comprises the following;

- ring (213.1) and flange (213.2) connected to the lantern (211),

- backing (213.3) which is located in the rear section of the mirror (213) and enables engaging the mirror (213) to the flange (213.2),

- roller feet (213.4) which can be three or four, enables holding the drilling mechanism (210) stably by means of contacting with the external surface of the workpiece (P) during centering the same to the workpiece (P), switch (213.6) which enables manual opening/closing of the roller feet (213.4) to be in contact with the workpiece (P) in the direction of x and Y-axis and thus enables adjustment process according to the diameter (P) of the workpiece (P), at the same time eliminates opening/closing conditions of the roller feet (213.4) with adjusted diameter during center hole (P1) making process, is engaged with the lantern (211) by means of the switch connection (213.5).

The mirror (213) to be used in the drilling mechanism (210) is not required to be used in the center hole (P1) making process on the forehead on the workpieces (P) whose cutting process is performed with large diameter and short size since there will be no flexion.

As can be seen in Figure 7, the X-axis movement mechanism (220) which enables making a center hole (P1) on the forehead section of the workpiece (P) by center drill (212.2) by means of moving the drilling mechanism (210) of the inventive machine (A) forward/backward automatically in the direction of X-axis, comprises the following;

- X-axis linear slides (221) which are connected to the X-axis slide bodies (110) connected to the main chassis (100), has X-axis linear bearings (221.1) on which body (201) is fixed,

- X-axis ball screw (222) which moves the carriage (200) in the X-axis direction, is engaged to the equivalent of the X-axis ball screw (224) which is fixed to the body (201) by means of passing the end portion of the same through the X-axis ball nut (223) engaged to the rear section of the main chassis (100),

- X-axis ball nut (223) which allows the X-axis ball screw (222) to perform its worm screw task, engaged to the rear section of the main chassis (100) fixedly,

- X-axis ball screw equivalent (224) on which end portion of the X-axis ball screw (222) that moves forward/backward in the X-axis direction on the fixed-structure X- axis ball nut (223), is fixed to the body (201),

- X-axis servo motor (225) which provides rotational motion to the X-axis ball screw (222) so as to move the X-axis movement mechanism (220) forward/backward in the X-axis direction,

X-axis timing pulley (226) which is engaged to the X-axis servo motor (225) and X- axis ball screw (222) separately, An X-axis timing belt (227) which is fitted to the X-axis timing pulleys (226).

As can be seen in Figure 8, the Y-axis movement mechanism (230) which enables adjusting the drilling mechanism (210) in the center of Y-axis according to the center hole (P1) to be made on the workpiece (P) by means of automatically moving the drilling mechanism (210) of the inventive machine (A) in the direction of Y-axis;

- Y-axis mechanism body (231) on which all elements of Y-axis mechanism (230) are connected,

- Y-axis linear slides (232) which enable the engagement of the Y-axis mechanism body (231) on the upper section of the body (201) such that it can move forward/backward in the direction of Y-axis, on which y-axis slide bearings (232.1) where Y-axis mechanism body (231) is fixed thereon, move,

- Y-axis ball screw (233) which moves the drilling mechanism (210) in the Y-axis direction, is engaged to the equivalent of the Y-axis ball screw (235) which is fixed to the body (201) by means of passing the end portion of the same through the Y- axis ball nut (234) engaged to Y-axis mechanism body (231),

- Y-axis ball nut (234) which allows the Y-axis ball screw (233) to perform its worm screw task, is engaged to Y-axis mechanism body (231) fixedly,

- Y-axis ball screw equivalent (235) on which end portion of the Y-axis ball screw (233) rotating in the axis of the fixed-structure Y-axis ball nut (234), is fixed to the body (201),

- Y-axis servo motor (236) which provides rotational motion to the Y-axis ball screw (233) so as to move the Y-axis movement mechanism (230) forward/backward in the Y-axis direction,

- Coupling (237) which enables connection of Y-axis servo motor (236) and Y-axis ball screw (223) to each other,

Y-axis fixing mechanism (238) which enables the drilling mechanism (210) to be fixed after the adjustment process in the direction of Y-axis, is engaged to the Y- axis mechanism body (231) by means of the Y-axis fixing connection (238.1), comprises manually controllable Y-axis fixing arm (238.2), Y-axis fixing shoe

(238.3) that applies pressure on the Y-axis ball screw (233) and Y-axis fixing bolt

(238.4).

As can be seen in Figure 9 and 10, the Z-axis movement mechanism (240) which enables adjusting the drilling mechanism (210) in the center of Z-axis according to the center hole (P1) to be made on the workpiece (P) by means of automatically moving the drilling mechanism (210) of the inventive machine (A) in the direction of Z-axis;

- Z-axis mechanism body (241) which is engaged with the Z-axis slide bearings (203.1) that are movably engaged on the Z-axis slide shafts (203), has a motor connection (241.1) on the side upper section, spindle connection (241.2) on the bottom section,

- Z-axis ball screw (242) which moves the drilling mechanism (210) in the Z-axis direction, is engaged to the equivalent of the Z-axis ball screw (244) which is fixed to the Z-axis mechanism body (241) by means of passing the end portion of the same through the Z-axis ball nut (243) engaged to the upper table (204),

- Z-axis ball nut (243) which allows the Z-axis ball screw (242) to perform its worm screw task, engaged to the upper table (204) fixedly,

- Z-axis ball screw equivalent (244) on which end portion of the Z-axis ball screw (242) that moves forward/backward in the Z-axis direction on the fixed-structure Z- axis ball nut (243), is fixed to the Z-axis mechanism body (241),

- Z-axis servo motor (245) which provides rotational motion to the Z-axis ball screw (242) so as to move the Z-axis movement mechanism (240) upward/downward in the z-axis direction,

- Z-axis timing pulley (246) which is engaged to the Z-axis servo motor (245) and Z- axis ball screw (242) separately,

Z-axis timing belt (247) which is fitted to the Z-axis timing pulleys (246),

Z-axis fixing mechanism (248) which enables the drilling mechanism (210) to be fixed after the adjustment process in the direction of Z-axis, is engaged to the lower section of the lantern (211), consists of Z-axis fixing shoes (248.1) that applies pressure on the Z-axis slide shafts (203), Z-axis clamping piece (248.2) that moves the Z-axis fixing shoes (248.1), Z-axis fixing bolt (238.4) and manually controlled Z-axis fixing arm (248.4).

Control unit (300) controls the electric motor (214) operating by electricity and servo motors (225, 236, 245) and has software for simultaneously or separately operating each motor (214, 225, 236, 245).

In the production process of the inventive automatic machine (A), the main chassis (100) is produced. X-axis linear slides (221) are fixed to the X-axis slide body (110) located on the main chassis (100). The production of the carriage (200) which comprises the body (201), drilling mechanism (210), X-axis movement mechanism (220), Y-axis movement mechanism (230) and Z-axis movement mechanism (240) is realized. Subsequently, the carriage (200) is engaged to the X-axis linear bearings (221.1) located on the X-axis linear slides (221) engaged on the main chassis (100) from the lower portion of the body (201).

Finally, the assembly of the machine (A) is made by means of performing the connection of the electric motor (214) of the drilling machine (210) on the carriage (200), X-axis servo motor (225) of X-axis movement mechanism (220), Y-axis servo motor (236) of Y-axis movement mechanism (230) and Z-axis servo motor (245) of Z-axis movement mechanism (240) with the control unit (300).

The inventive automatic machine (A) and the center hole (P1) opening process on the workpieces (P) are illustratively shown in Figures 1 and 11.

The inventive automatic machine (A) is located on the front section of the fast cutting circular sawing machine (B) on the ground as can be seen in Figures 1 and 9. The floor balance of the machine (A) is adjusted by means of the adjustable feet (101). In the positioning process, the locations of the machine (A) and fast cutting circular sawing machine (A) are determined.

The user enters the operation information of the workpiece (P) on which center hole (P1) will be opened through the control unit (300). This information is Y and Z coordinates according to the diameter/thickness of the workpiece (P) and X coordinates of the length dimension to be cut. At the same time, it is the movement information of the X-axis movement mechanism (220) in idle, motion, metal removal/drilling speed modes.

The inventive machine (A) carries out the centering process of the drill mechanism (210) by means of Y and Z movement mechanisms (230-240) according to the center of the center hole (P1) to be opened on the workpiece (P) as a result of the information entered. In this process, first of all, the control unit (300) operates the y-axis servo motor (236) of the Y-axis movement mechanism (230) at the entered y-axis coordinate values. While Y- axis screw ball (233) driven by the Y-axis servo motor (236) by means of coupling (237) rotates, it enables the movement of the Y-axis slide bearings (232.1) on Y-axis linear slides (232) and it performs centering process of the drilling mechanism (210) in the Y- axis coordinates.

At the same time, the control unit (300) operates the Z-axis servo motor (245) of the Z- axis movement mechanism (240) at the value of the entered Z-axis coordinates. While Z- axis screw ball (242) driven by the Z-axis servo motor (245) by means of the Z-axis timing pulleys (246) and Z-axis timing belt (247) rotates, it enables the movement of the Z-axis slide bearings (203.1) on Z-axis slide shafts (203) and it performs centering process of the drilling mechanism (210) in the Z-axis coordinates.

After the Y and Z centering process is performed, fixing operation of the drilling mechanism (210) is carried out by means of the Y-axis fixing mechanism (238) and Z-axis fixing mechanism (248). In the fixing process in Y-axis, manually controllable Y-axis fixing arm (238.2) is moved to the right or left by the user according to the clamping direction and it is performed by means of applying pressure to the Y-axis ball screw (233) by the Y- axis fixing shoe (238.3). In the fixing process in Z-axis, manually controllable Z-axis fixing arm (248.4) is moved to the right or left by the user according to the clamping direction and it is performed by means of applying pressure to the Z-axis slide shafts (203) by the Z-axis clamping piece (248.2), Z-axis fixing shoes (248.1).

After the fixing process, the adjustment of the mirror (213) is made. In this process, the user adjusts the roller feet (213.4) according to the diameter of the workpiece (P) by turning the switch (213.6) to the right/left. After the centering, fixing and mirror (213) adjustment processes, the fast cutting circular sawing machine (B) and the inventive automatic machine (A) that performs the center hole (P1) making process to the workpiece (P) are operated simultaneously.

While length cutting process is performed on the workpiece (A) on the fast cutting circular sawing machine (A), drilling mechanism (210) in centered manner, carries out the center hole (P1) making process on the forehead section of the workpiece (P) by moving the carriage (200) by means of the X-axis movement mechanism (220). In this process, first of all the carriage (200) moves fast in the idle mode as a result of the operational values entered through the control unit (300). The control unit (300) operates the X-axis servo motor (225) of the X-axis movement mechanism (220) for the specified movement, transmits motion to the X-axis ball screw (222) by means of the X-axis timing pulleys (226) and X-axis timing belt (227). The carriage (200) approaches the workpiece (P) with the rotation of the X-axis ball screw (222).

In the center hole making process of the drilling mechanism (210), the carriage (200) progresses at the machining /drilling operation speed. Center drill (212.2) rotates during the progression of the drilling mechanism (210). In this process, the electric motor (214) moves the spindle (212) by means of the timing pulleys (215) and timing belt (216), the spindle (212) rotates the center drill (212.2) fixed on the clip (212.1) on the end of the same at the determined cycle.

In the center hole (P1) making process, roller feet (213.4) of the mirror (213) grasps the workpiece (P) externally and eliminates possible vibrations.

In the termination of the machining/drilling operation, the carriage (200) moves in the reverse position by means of the X-axis movement mechanism (220). The workpiece (P) to which a center hole (P1) is made and which is cut in the fast cutting circular sawing machine (B) falls onto a belt or an external chamber located on the lower portion of the main chassis (100). The center hole (P1) making process by means of the inventive machine (A) on the forehead section of the workpiece (P) again is realized, by means of moving the next workpiece (P) to the height to be cut by the moving mechanism of the fast cutting circular sawing machine. The center drill (212.2) used in making a center hole (P1) on the workpieces (P) may vary based on the size of the workpiece (P). In this process, the center drill (212.2) can be changed by separating from the clip (212.1) of the drilling mechanism (210).

Center hole (P1) making at the center of the workpieces (P) or out of the center of the same by the inventive machine (A) is realized. In the center hole (P1) making process on the workpiece (P) out of the center, it can be realized by adjusting the drilling mechanism (210) by moving the same as mentioned above by means of the y and z coordinate values entered through the control unit (300) and Y and Z-axis movement mechanisms (230- 240).

The center hole (P1) on the forehead section of the circular or polygonal section solid- structured metal-derived all workpieces (P) can be made by the inventive machine (A).

In the machine (A) which is used for making a center hole (P1) on the forehead section of the workpiece (P) by the center drill (212.2) rotating with the rotational motion received from the electric motor (214), by means of engaging a cutter or a countersink to be prepared in place of the center drill (212.2), during the cutting process of the hollow workpieces (P) made of pipe material in the fast cutting circular sawing machine (B), deburring is performed on the end portion, at the same time metal removing process is performed from the workpiece (P) made of pipe material with different wall thickness and thus the wall thickness is brought to the same level. Therefore, the proper engagement of the workpiece (P) to the lathe mirror is provided, it is not necessary to eliminate the wall thickness difference of the workpiece (P) together with the external deburring process.