KR20170115620A - 5-axis machine - Google Patents

Abstract

The present invention relates to a five-axis machining apparatus, and a five-axis machining apparatus according to an embodiment of the present invention includes a spindle for rotating a tool for machining a workpiece, a spindle head for rotatably supporting the spindle, And a tilting driving unit for tilting the spindle head.

Description

5-axis machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a five-axis machining apparatus, and more particularly to a five-axis machining apparatus capable of tilting a spindle.

In general, a machine tool refers to a machine that is used for machining a metal or non-metal workpiece with various tools to a desired shape and size by various cutting or non-cutting processing methods.

Machine tools are classified into turning centers and machining centers depending on the machining method. Here, the turning center rotates the workpiece, and the machining center rotates the tool to machine the workpiece.

The Machining Center is a complex machine tool that can be combined with a boring machine, a milling machine, and a drilling machine to perform all machining tasks such as cutting, drilling and tapping. It is possible to perform a three-axis machining operation in which the spindle is linearly fed in three axial directions.

In recent years, parts with complex shapes have been increasing in accordance with the development of the automobile, shipbuilding, and aviation industries. In order to improve the productivity of such parts machining, machining centers are divided into several machining centers, 5-axis machining is widely used. Here, the two-axis machining added to the conventional three-axis machining may include a rotation axis for rotating the table supporting the workpiece and a tilting axis for tilting the spindle.

However, during the workpiece machining, when the spindle equipped with the tool is rotated around the tilting axis or in the direction of the linear axis feed, the cutting vibration affects the tilting axis via the tool.

As described above, when the cutting vibration affects the tilting axis for tilting the spindle, there is a problem that the surface roughness of the workpiece becomes poor due to a pattern on the surface of the workpiece. In other words, such a pattern has been a cause of lowering the processing quality of the workpiece.

An embodiment of the present invention provides a 5-axis machining apparatus in which a reduction in machining quality due to cutting vibration is improved.

According to an embodiment of the present invention, a five-axis machining apparatus includes a spindle for rotating a tool for machining a workpiece, a spindle head for rotatably supporting the spindle, a power transmitting portion for transmitting rotational power to the spindle, And a tilting head having a tilting drive for tilting the head.

The power transmission unit includes a power transmission shaft for transmitting power to the spindle and at least one gear connected to the power transmission shaft, a damping unit coupled to an outer circumferential surface of the power transmission shaft and rotating together with the power transmission shaft, And a damping device including a disk, a damping support for supporting the damping disk against one side of the damping disk, and a damping ring for pressing the other side of the damping disk against the other side of the damping disk.

The damping ring pressurizes the other side of the damping disk by receiving hydraulic pressure. The hydraulic pressure supplied to the damping ring increases as the cutting vibration generated by the tool for rotating the spindle increases, and decreases as the cutting vibration becomes smaller have.

The damping device may further include a sliding bearing provided between one side of the damping disk and the damping support, and between the other side of the damping disk and the damping ring.

Wherein the damping ring includes a damping ring main body portion having a hydraulic oil passage formed therein, a damping ring pressing portion spaced apart from the damping ring main body portion and pressing the other side surface of the damping ring disk, A U-type sealing member for damping which is spaced apart from the damping ring chamber and is filled with operating fluid and has one side thereof opened and a concave portion facing the damping ring chamber so as to seal the opening of the damping ring chamber; . ≪ / RTI >

Wherein the tilting driving unit includes a tilting driving shaft connected to the spindle head for tilting the spindle head and a tilting driving motor for supplying rotational power to the tilting driving shaft and a tilting driving motor coupled to an outer circumferential surface of the tilting driving shaft, And a clamping device including a clamping disk rotating together and a clamping ring pressing one side of the clamping disk against one side of the clamping disk.

Wherein the clamping ring includes a clamping ring main body portion in which a hydraulic flow path is formed, a clamping ring pressing portion that is apart from the clamping ring body portion and presses the other side surface of the clamping ring body, A U-type sealing member for clamping, which is a spaced space between the clamping ring chamber and the clamping ring chamber, the clamping ring chamber being filled with operating fluid and having one side opened and a concave portion facing the clamping ring chamber, . ≪ / RTI >

The five-axis machining apparatus may further include a tilting drive motor of the tilting apparatus, the damping apparatus, and a control valve unit for controlling the clamping apparatus.

The control valve unit may include a motor control valve for controlling the tilting drive motor, a first damping control valve and a second damping control valve for controlling the damping device, and a clamping control valve for controlling the clamping device.

The control valve unit may be selected from among a clamping mode, a damping mode, and an unclamping mode to perform a separating operation. And the clamping mode is selected when performing the powerful cutting operation, the damping mode is selected when the heavy cutting operation is performed, and the unclamping mode can be selected when performing the light cutting operation.

Also, in the clamping mode, the motor control valve, the first damping control valve, and the clamping control valve are operated on, and in the damping mode, the second damping control valve is operated on, In the unclamping mode, the motor control valve, the first damping control valve, the second damping control valve, and the clamping control valve may be turned off.

When the first damping control valve is turned on, the damping ring can press the damping disk to a relatively larger pressure than when the second damping control valve is turned on.

According to the embodiment of the present invention, the 5-axis machining apparatus can effectively reduce the degradation of the machining quality due to the cutting vibration.

1 is a perspective view of a 5-axis machining apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view showing the internal structure of the spindle and the tilting head of FIG. 1. FIG.
3 is a cross-sectional view taken along the line III-III in Fig.
4 is an enlarged cross-sectional view of the damping device of FIG. 3.
5 is a perspective view showing a damping disk of the damping device of FIG.
6 is a perspective view showing a damping support of the damping device of FIG.
FIG. 7 is an enlarged sectional view of the clamping device of FIG. 3; FIG.
FIG. 8 is a schematic view showing a control valve unit used in the 5-axis machining apparatus of FIG. 1; FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The drawings are schematic and not drawn to scale. The relative dimensions and ratios of the parts in the figures are exaggerated or reduced in size for clarity and convenience in the figures, and any dimensions are merely illustrative and not restrictive. And to the same structure, element or component appearing in more than one drawing, the same reference numerals are used to denote similar features.

The embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various variations of the illustration are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture.

Hereinafter, a five-axis machining apparatus 101 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG.

1, a five-axis machining apparatus 101 according to an embodiment of the present invention includes a spindle 200, a spindle head 250, and a tilting head 300. As shown in FIG.

The five-axis machining apparatus 101 according to an embodiment of the present invention includes a main axis driving motor 280, a slide 450, a column 400, a bed 800, a saddle 700, a table 600, A transfer device 530, a left and right transfer device 520, a back and forth transfer device 510, and a table rotation driving part 750.

Further, the 5-axis machining apparatus 101 according to an embodiment of the present invention further includes a control valve unit 900.

The spindle 200 contacts the workpiece and transmits rotational power to the tool for machining the workpiece. That is, the spindle 200 clamps and rotates a tool for machining a workpiece at one end. A clamping device (not shown) for clamping the tool may be provided inside the spindle 200. Here, as the clamping device, various types of clamping devices known to those skilled in the art can be used, and a clamping device including a collet can generally be used.

The spindle 200 includes a spindle shaft 210 and a main shaft bevel gear 230 formed on an outer circumferential surface of the spindle shaft 210 so as to surround the spindle shaft 210. In this embodiment,

The spindle head 250 surrounds the spindle 200 and rotatably supports the spindle 200. A bearing may be provided between the spindle head 250 and the spindle 200 so that the spindle head 250 rotatably supports the spindle 200.

The main spindle driving motor 280 is mechanically connected to the spindle 200 to supply rotational power to the spindle 200. As the main shaft driving motor 280, various types of motors known to those skilled in the art can be used.

The tilting head 300 not only supports the spindle head 250 in a tiltable manner, but also transmits the rotational power supplied from the main spindle driving motor 280 to the spindle 200.

2, the tilting head 300 includes a power transmitting portion 310 for transmitting rotational power to the spindle 200 and a tilting driving portion 360 for tilting the spindle head 200 do.

In one embodiment of the present invention, the power transmission portion 310 includes a power transmission gear device 330 and a damping device 320. [

The power transmission gear device 330 transfers the rotational power supplied from the spindle motor 280 to the spindle 200. Specifically, the power transmission gear device 330 includes a power transmission shaft 331 and a power transmission bevel gear 334 formed at one end of the power transmission shaft 331 and engaged with the main shaft bevel gear 230 of the spindle 200 And a plurality of power transmission gears 335 including a plurality of power transmission gears 335.

The damping device 320 may include a damping disk 321, a damping support 322, and a damping ring 323, as shown in Figs. 3-6.

Further, the damping device 320 may further include a slide bearing 328.

The damping disk 321 is coupled to the outer circumferential surface of the power transmission shaft 331 and rotates together with the power transmission shaft 331.

The damping support 322 supports one side of the damping disc 321 against one side of the damping disc 321.

The damping ring 323 presses the other side of the damping disc 321 against the other side of the damping disc 321.

Thus, the damping disc 321 is rotated together with the power transmission shaft 331, but the damping support 322 and the damping ring 323 are fixed without rotating.

When the damping ring 323 presses the damping disc 321, the damping disc 321 rubs between the damping support 322 and the damping ring 323 and this friction causes the tool to be generated during workpiece machining, The cutting vibration transmitted to the power transmission shaft 331 via the transmission shaft 200 is reduced.

That is, even if the damping ring 323 of the damping device 320 presses the damping disc 321, it does not stop the rotation of the power transmission shaft 331 that transmits the rotational power to the spindle 200. The damping disc 321 held between the damping support 322 and the damping ring 323 absorbs the cutting vibration transmitted to the power transmission shaft 331 via the spindle 200 while rotating together with the power transmission shaft 331 .

In one embodiment of the present invention, the damping ring 323 may be pressurized on the other side of the damping disc 321 by receiving hydraulic pressure. The hydraulic pressure supplied to the damping ring 323 increases as the cutting vibration generated by the tool rotated by the spindle 200 increases, and decreases as the cutting vibration becomes smaller.

Here, the magnitude of the cutting vibration can be measured or calculated by various methods known to those skilled in the art.

For example, the magnitude of the cutting vibration can be determined through a numerical control (NC) device (not shown) installed in the 5-axis machining apparatus 101. The numerical control (NC) device controls the operation of the 5-axis machine according to the input numerical control program (NC-Program).

Since the numerical control device has a method of cutting the tool with respect to the workpiece, the material of the workpiece, and information on the feed axis of the tool, the numerical control device can calculate the size of the cutting vibration to be generated in the current machining state as an estimate have. At this time, cutting methods include strong cutting, high speed cutting, and general cutting.

That is, it is determined that the cutting vibration is relatively large if the tool is moved while the tool is moving during the strong cutting, and if the tool is rotated without moving, the cutting vibration is relatively small.

Further, the 5-axis machining tool 101 can accurately detect the magnitude of the cutting vibration using a sensor.

Specifically, the damping ring 323 includes the damping ring main body portion 3235, the damping ring pressing portion 3231, the damping ring chamber 3233, and the U-type sealing member 3234 for damping .

The damping ring main body 3235 is provided with a damping hydraulic fluid passage 3236 for supplying or recovering hydraulic pressure.

The damping ring pressing portion 3231 is partly spaced apart from the damping ring body portion 3235 and presses the other side of the damping disk 321.

The damping ring chamber 3233 is a spaced space between the damping ring main body portion 3235 and the damping ring pressurizing portion 3231. The damping ring chamber 3233 is filled with working fluid and one side of the damping ring chamber 3233 Is opened.

The U-type sealing member 3234 for damping closes the opening of the damping ring chamber 3233. At this time, the U-shaped sealing member 3234 for damping is installed so that the concave portion faces the damping ring chamber 3233.

According to one embodiment of the present invention, when damping ring pressurizing portion 3231 is filled with hydraulic fluid in damping ring chamber 3233, damping ring pressurizing portion 3231 presses the other side of damping disc 321 The opening size of the damping ring chamber 3233 is increased.

At this time, the U-shaped sealing member 3234 for damping is opened by the pressure of the operating oil filled in the damping ring chamber 3233, thereby effectively sealing the opening of the damping ring chamber 3233 whose size is increased.

That is, when the working oil filled in the damping ring chamber 3233 presses the damping ring pressing portion 3231, the damping ring 3233 is opened at the same time, thereby opening the damping U-shaped sealing member 3234. Thus, even if the opening size of the damping ring chamber 3233 changes, The opening of the ring chamber 3233 can be closed.

As described above, friction occurs between the damping support 322 and the damping disk 231 and between the damping disk 321 and the damping ring 323, so that abrasion due to friction is reduced and the wear of the damping disk 321 A sliding bearing 328 is provided between one side of the damping disk 321 and the damping support 322 and between the other side of the damping disk 321 and the damping ring 323.

In one embodiment of the present invention, the tilting driver 360 includes a tilting device 380 and a clamping device 370.

The tilting device 380 tilts the spindle head 250 that rotatably supports the spindle 200. The tilting device 380 is connected to the spindle head 250 to drive the tilting drive shaft 381 for tilting the spindle head 250 and the tilting drive motor 388 for supplying the tilting drive shaft 381 with rotational power .

The tilting device 380 may further include at least one tilting drive gear 385 for mechanically connecting the tilting drive motor 388 and the tilting drive shaft 381.

The clamping device 370 includes a clamping disc 371 and a clamping ring 373, as shown in Figs.

The clamping disk 371 is coupled to the outer circumferential surface of the tilting drive shaft 381 and rotates together with the tilting drive shaft 381.

The clamping ring 373 presses one side of the clamping disc 371 against one side of the clamping disc 371.

Thus, the clamping disk 371 rotates together with the tilting drive shaft 381, but the clamping ring 373 is fixed without rotating.

When the clamping ring 373 strongly presses the clamping disc 371 and meshes with each other, the tilting drive shaft 381 is clamped by the frictional force.

Thus, a tool that the spindle rotates in a state where the tilting angle of the spindle 200 is fixed can process the workpiece.

In an embodiment of the present invention, the clamping ring 373 may be pressurized on one side of the clamping disc 371 by receiving hydraulic pressure.

Specifically, the clamping ring 373 includes a clamping ring body 3735, a clamping ring pressing portion 3731, a clamping ring chamber 3733, and a U-type sealing member 3734 for clamping .

A hydraulic oil passage (not shown) is formed in the clamping ring main body 3735 to supply or recover hydraulic pressure. Although the hydraulic oil passage is not shown in Fig. 7, the hydraulic oil passage formed in the clamping ring main portion 3735 can be formed in the same technical idea as the hydraulic oil passage formed in the damping ring main portion 3235 described above.

The clamping ring pressing portion 3731 is partly spaced from the clamping ring body portion 3735 and presses one side of the clamping disk 371.

The clamping ring chamber 3733 is a spaced space between the clamping ring main body portion 3735 and the clamping ring pressing portion 3731. The clamping ring chamber 3733 is filled with the working oil and the one end of the clamping ring chamber 3733 Is opened.

A U-type sealing member 3734 for clamping closes the opening of the clamping ring chamber 3733. At this time, the U-shaped sealing member 3734 for clamping is installed so that the concave portion faces the clamping ring chamber 3733.

According to one embodiment of the present invention, when the working oil is filled in the clamping ring chamber 3733 to press the clamping ring pressing portion 3731, the clamping ring pressing portion 3731 presses one side of the clamping disk 371 The opening size of the clamping ring chamber 3733 is increased.

At this time, the U-shaped sealing member 3734 for clamping can be effectively closed by increasing the size of the clamping ring chamber 3733 by being spread by the pressure of the working oil filled in the clamping ring chamber 3733.

That is, when the working oil filled in the clamping ring chamber 3733 presses the clamping ring pressing portion 3731, the U-shaped sealing member 3734 for clamping is opened so that even if the opening size of the clamping ring chamber 3733 changes, The opening of the ring chamber 3733 can be closed.

The control valve unit 900 is provided for controlling the tilting drive motor 388, the damping unit 320 and the clamping unit 370 of the tilting apparatus 380 as shown in Fig.

More specifically, the control valve unit 900 includes a motor control valve 980 for controlling the tilting drive motor 388, a first damping control valve 921 and a second damping control valve 921 for controlling the damping device 320 922, and a clamping control valve 970 for controlling the clamping device 370.

Here, the control of the damping unit 320 by the control valve unit 900 can be divided and controlled according to the magnitude of the cutting vibration. That is, the size of the cutting vibration varies depending on the kind of cutting performed by the 5-axis machining apparatus 101 such as the strong cutting, the high-speed cutting, and the general cutting. Therefore, the control valve unit 900 may include a first damping control valve 921 used for power cut control and a second damping control valve 922 used for control other than intensity cutting.

In addition, the motor control valve 980 for controlling the tilting drive motor 388 can lock or unlock the tilting drive motor 388.

As shown in FIG. 1, the bed 800 slidably supports the saddle 700 and the column 400, which will be described later.

Specifically, the bed 800 may include a main frame 801 and linear guides 810 and 820 formed on the main frame 801 and slidably coupled to the saddle 700 and the column 400 have. Here, the linear guide may include a front-back linear guide 810 and a left-right linear guide 820.

The saddle 700 is slidably coupled on the bed 800 and can linearly reciprocate along the front and rear linear guides 810 of the bed 800. That is, the saddle 700 can linearly reciprocate in the forward and backward directions (hereinafter referred to as "Z-axis direction").

A longitudinal transfer device (hereinafter referred to as a "Z-axis transfer device") 510 is installed between the bed 800 and the saddle 700 to make the saddle 700 linearly reciprocate on the bed 800.

Table 600 supports a workpiece to be machined by a spindle 200 that is rotated by the spindle. The table 600 is installed on the saddle 700 and linearly reciprocates along the saddle 700.

A table rotation drive unit 750 is provided between the table 600 and the saddle 700 to rotate the table 600 on which the workpiece is placed. At this time, the rotation axis of the table 600 is parallel to the direction perpendicular to the plane of the table 600.

The column 400 may be erected vertically in a region on the rear side of the bed 800 so as to be positioned behind the table 600. [

The column 400 is also slidably engaged on the bed 800 and can linearly reciprocate along the left and right linear guides 820 of the bed 800. That is, the column 400 can reciprocate linearly in the left-right direction (hereinafter referred to as "X-axis direction").

A lateral transfer device (hereinafter referred to as an "X-axis transfer device") 520 is installed between the bed 800 and the column 400 to linearly reciprocate the column 400 on the bed 800.

In addition, the column 400 may include an upper and lower linear guides 430 formed on one side of the table 600.

The slide 450 is slidably coupled to one side of the column 400 in the direction of the table 600 and can linearly reciprocate along the upper and lower linear guides 430 of the column 400. That is, the slide 450 can reciprocate linearly in a vertical direction (hereinafter referred to as "Y-axis direction").

A vertical transfer device (hereinafter referred to as a "Y-axis transfer device") 530 is installed between the column 400 and the slide 450 to linearly reciprocate the slide 450 in the vertical direction.

Further, the slide 450 supports the tilting head 300 and the main shaft driving motor 280 described above.

That is, the spindle 200, the spindle head 250, the tilting head 300, and the main shaft driving motor 280 can reciprocate linearly in the Y-axis direction together with the slide 450.

For example, the Z-axis transfer device 510, the X-axis transfer device 520, and the Y-axis transfer device 530 may be a ball screw transfer device.

The 5-axis machining apparatus 101 according to the embodiment of the present invention is configured to move in the Z-axis direction and the X-axis direction through the Z-axis transfer device 510, the X-axis transfer device 520, Direction, and Y-axis direction.

Further, it is possible to drive the rotary shaft in the biaxial direction including the rotation of the table 600 and the tilting of the tilting head 300.

Thus, the 5-axis machining apparatus 101 according to an embodiment of the present invention can perform a machining operation by a total of 5-axis drive.

With such a configuration, the 5-axis machining tool 101 according to the embodiment of the present invention can effectively reduce the degradation of the machining quality due to the cutting vibration.

Specifically, the cutting vibration can be effectively absorbed through the damping device 320, and the tilting angle of the spindle 200 can be effectively fixed through the clamping device 370.

Hereinafter, the operation principle of the 5-axis machining apparatus 101 according to one embodiment of the present invention will be described step by step with reference to FIG. 3 and FIG.

According to an embodiment of the present invention, the damping device 320 and the clamping device 370 and the control valve portion 900 for controlling the damping device 320 and the damping device 370 disposed on both sides of the spindle head 250 are in a clamping mode, a damping mode, And the clamping mode.

The clamping mode can be selected when the spindle head 250 is fully clamped or when the five-axis machining tool 101 performs heavy-duty machining.

In the clamping mode, the motor control valve 980, the first damping control valve 921, and the clamping control valve 970 of the control valve unit 900 are turned on. Thus, the damping drive motor 388 is locked, and the damping ring 323 of the damping device 320 moves the damping disk 321 to a relatively strong pressure under the control of the first damping control valve 921 Pressure. Here, the relatively strong pressure means that the damping ring 323 of the damping device 320 is relatively stronger than the pressure that presses the damping disc 321 under the control of the second damping control valve 922. That is, when the first damping control valve 921 is turned on, the damping ring 323 can press the damping disk 321 to a relatively larger pressure than when the second damping control valve 922 is turned on .

Further, the clamping device 370 also operates to clamp the spindle head 250, so that it is possible to cope with strong cutting with a high cutting force.

The damping mode can be selected when the 5-axis machining tool 101 performs a cutting operation such as general cutting or heavy cutting.

In the damping mode, the second damping control valve 922 of the control valve unit 900 is turned on. At this time, even if the damping ring 323 of the damping device 320 presses the damping disc 321, it does not stop the rotation of the power transmission shaft 331 transmitting the rotational power to the spindle 200. The damping disc 321 held between the damping support 322 and the damping ring 323 absorbs the cutting vibration transmitted to the power transmission shaft 331 via the spindle 200 while rotating together with the power transmission shaft 331 . That is, in response to a general cutting or a heavy cutting, the cutting vibration can be minimized and the quality of the workpiece can be maintained.

The unclamping mode can be selected when the 5-axis machining tool 101 carries out a cutting operation such as a light cutting such that little cutting force is generated.

In the unclamping mode, the motor control valve 980, the first damping control valve 921, the second damping control valve 922, and the clamping control valve 970 of the control valve unit 900 are turned off ). That is, machining can be performed without energy loss due to damping corresponding to light cutting.

According to such an operation method, the 5-axis machining apparatus 101 according to the embodiment of the present invention can effectively reduce a drop in machining quality due to cutting vibration.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. will be.

It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

The 5-axis machining apparatus according to the embodiment of the present invention can be used to improve the drop in machining quality due to cutting vibration.

Claims (11)

A spindle for rotating a tool for machining a workpiece;
A spindle head rotatably supporting the spindle; And
A tilting head having a power transmitting portion for transmitting rotational power to the spindle and a tilting driving portion for tilting the spindle head;
/ RTI >
The power transmission unit includes:
A power transmission gear device including a power transmission shaft for transmitting power to the spindle and at least one gear connected to the power transmission shaft;
A damping disk coupled to an outer circumferential surface of the power transmission shaft and rotating together with the power transmission shaft, a damping support for supporting the damping disk against one side of the damping disk, And a damping ring for pressing the other side of the damping ring
Axis direction. The method according to claim 1,
The damping ring pressurizes the other side of the damping disk by receiving hydraulic pressure,
Wherein the hydraulic pressure supplied to the damping ring is increased as the cutting vibration generated by the tool rotated by the spindle is increased and decreased as the cutting vibration is reduced. The method according to claim 1,
Wherein the damping device further comprises a sliding bearing provided between one side of the damping disk and the damping support, and between the other side of the damping disk and the damping ring. The method according to claim 1,
The damping ring
A damping ring main body portion having a hydraulic oil passage formed therein;
A damping ring pressing portion that is spaced apart from the damping ring body portion and presses the other side surface of the damping disk;
A damping ring chamber spaced apart from the damping ring main body portion and the damping ring pressurizing portion, the damping ring chamber filled with operating fluid and opened at one side; And
A U-type sealing member for damping which seals the opening of the damping ring chamber and has a concave portion facing the damping ring chamber;
Axis direction. 5. The five-axis machining apparatus according to claim 1, The method according to claim 1,
The tilting drive unit includes:
A tilting drive shaft connected to the spindle head for tilting the spindle head and a tilting drive motor for supplying rotational power to the tilting drive shaft;
And a clamping ring coupled to an outer circumferential surface of the tilting drive shaft for rotating together with the tilting drive shaft and a clamping ring for pressing one side of the clamping disk against one side of the clamping disk.
Axis direction. 5. The five-axis machining apparatus according to claim 1, 6. The method of claim 5,
Wherein the clamping ring comprises:
A clamping ring main body portion having a hydraulic oil passage formed therein;
A clamping ring pressing portion that is spaced apart from the clamping ring body portion and presses the other side surface of the clamping disk;
A clamping ring chamber spaced apart from the clamping ring main body portion and the clamping ring pressing portion and filled with operating fluid and opened at one side; And
A U-type sealing member for clamping which seals the opening of the clamping ring chamber and has a concave portion facing the clamping ring chamber;
Axis direction. 5. The five-axis machining apparatus according to claim 1, 6. The method of claim 5,
Further comprising a tilting drive motor of the tilting device, the damping device, and a control valve portion for controlling the clamping device. 8. The method of claim 7,
Wherein the control valve unit includes a motor control valve for controlling the tilting drive motor, a first damping control valve and a second damping control valve for controlling the damping device, and a clamping control valve for controlling the clamping device 5-axis processing machine. 9. The method of claim 8,
Wherein the control valve unit is selected and operated to perform one of a clamping mode, a damping mode, and an unclamping mode,
The clamping mode is selected when performing the powerful cutting process,
The damping mode is selected when performing heavy cutting,
Wherein the unclamping mode is selected when light cutting is performed. 10. The method of claim 9,
In the clamping mode, the motor control valve, the first damping control valve, and the clamping control valve are operated on,
In the damping mode, the second damping control valve is on,
Wherein the motor control valve, the first damping control valve, the second damping control valve, and the clamping control valve are turned off in the unclamping mode. 9. The method of claim 8,
Wherein when the first damping control valve is turned on, the damping ring presses the damping disk to a relatively larger pressure than when the second damping control valve is turned on.

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