KR101756874B1 - Rotery Joint Unit for Multiaxis Processing Apparatus - Google Patents

Rotery Joint Unit for Multiaxis Processing Apparatus Download PDF

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Publication number
KR101756874B1
KR101756874B1 KR1020160023186A KR20160023186A KR101756874B1 KR 101756874 B1 KR101756874 B1 KR 101756874B1 KR 1020160023186 A KR1020160023186 A KR 1020160023186A KR 20160023186 A KR20160023186 A KR 20160023186A KR 101756874 B1 KR101756874 B1 KR 101756874B1
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KR
South Korea
Prior art keywords
oil
unit
rotary
rotary shaft
clamping
Prior art date
Application number
KR1020160023186A
Other languages
Korean (ko)
Inventor
서현우
장원범
Original Assignee
(주)대광금속
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Priority to KR1020160023186A priority Critical patent/KR101756874B1/en
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Publication of KR101756874B1 publication Critical patent/KR101756874B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P17/00—Metal-working operations, not covered by a single other subclass or another group in this subclass
    • B23P17/02—Single metal-working processes; Machines or apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B23Q11/122—Lubricant supply devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines

Abstract

A rotary joint unit of a multi-axis machining apparatus according to the present invention includes a rotary unit including a rotary part formed to be rotatable with respect to a center point and a plurality of clamping parts provided at a position eccentric from the center point of the rotary part, A rotary joint unit which is provided in the multiaxial machining apparatus and supplies oil from the oil supply unit to the plurality of clamping units, the rotary joint unit being rotatable at the same speed as the rotary unit by sharing the same rotary shaft as the rotary unit, A rotary shaft having a plurality of oil passages flowing in a longitudinal direction thereof and a center hole into which the rotary shaft is rotatably inserted is formed inside and fixed to surround the rotary shaft, A pipe joint for introducing oil into the oil passage .

Description

Rotary Joint Unit for Multiaxis Processing Apparatus

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary joint unit of a multi-axis machining apparatus, and more particularly, to a rotary joint unit of a multi-axis machining apparatus, which is applied to a multi-axis machining apparatus capable of simultaneously performing a plurality of machining processes, To a rotary joint unit.

In the case of highly developed mechanical devices such as automobiles in general, a large number of parts are applied inside. Since the parts to be applied to such a mechanical device have a complicated shape, a plurality of steps are performed for machining.

As a typical example, the ball pin supports the weight of the vehicle, absorbs the load transmitted from the road surface irregularities during driving to improve ride comfort, and maintains stability of the vehicle during a sudden steering operation.

The ball pin is a joint part connected to the steering knuckle to allow the driver to transmit the steering force transmitted when the steering wheel is steered, and is a core component connected to the ball joint.

In general, the manufacturing process of the ball pin is first to produce a forged product by using a 5 step former by cold forging method, then machining the head and neck of the ball for lubrication effect of the ball joint, And then the finished product is finally subjected to a TAP process.

At this time, the machining process for the spherical shape and the neck shape of the ball pin is generally performed using a CNC lathe, and this process generally has a long cycle time of 37 seconds. Also, the post-process burnishing process and TAP process are about 5 to 8 seconds long, and even if four CNC lathe machines are installed in the machining process, there is a problem that the line balancing can not be achieved and the line production method is impossible.

The applicant of the present application filed a multi-axis machining apparatus together with the present application to solve the above-mentioned problems. However, in such a multi-axis machining apparatus, since it has a rotary system, it is not easy to supply oil for lubrication. Therefore, in a rotary multi-axis machining apparatus, it is necessary to provide a structure for smoothly supplying oil to each component.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems of the conventional art described above, and has as its object to provide a structure for smoothly supplying oil to each component in a rotary multi-axis machining apparatus.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a rotary joint unit of a multi-axis machining apparatus including a rotary part rotatably formed with respect to a center point, and a plurality of clamping parts provided at a position eccentric from the center point of the rotary part, The rotary joint unit is provided in a multiaxial machining apparatus including a rotary unit including a rotary unit and receives oil from an oil supply unit and transfers the oil to the plurality of clamping units. A rotary shaft having a plurality of oil passages through which oil flows in a longitudinal direction and a center hole into which the rotary shaft is rotatably inserted are formed and fixed to surround the rotary shaft, The oil supply unit is connected to the oil passage And a pipe joint for introducing.

The plurality of oil passages may have different lengths from each other.

The rotary shaft may include a plurality of inflow passages connected to an end of each oil passage from a peripheral surface of the rotary shaft.

The pipe joint may be provided at each position corresponding to the plurality of inflow channels.

The pipe joint includes a coupling flow path connected to the oil supply unit and connected to the connection flow path, and a ring-shaped flow path formed around the center hole for introducing oil into the inflow path, .

The pipe joint may further include a pair of sealing members provided at both ends of the center hole.

The bearing assembly may further include a ring-shaped bearing housing provided at both ends of the rotary shaft, and a bearing provided between the bearing housing and the rotary shaft.

The rotary joint unit of the multiaxial machining apparatus of the present invention for solving the above problems has the following effects.

First, there is an advantage that the oil can be smoothly supplied to the respective clamping parts regardless of the rotation of the rotary unit.

Second, since the rotary shaft rotates at the same speed as the rotary unit, there is an advantage that the oil flow tube in which the oil flows can be prevented from being twisted originally.

Thirdly, the multi-axis machining apparatus can be driven for a long time, thereby greatly improving the productivity.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the entirety of a multi-axis machining apparatus according to an embodiment of the present invention;
FIG. 2 is a view showing a rotary unit and a machining unit in a multi-axis machining apparatus according to an embodiment of the present invention; FIG.
FIG. 3 is a view showing a multi-axis machining apparatus according to an embodiment of the present invention, in which the machining area of the rotary unit is divided; FIG.
4 is a view showing a state of a fixed frame in a multi-axis processing apparatus according to an embodiment of the present invention;
FIG. 5 is a view showing a rotating shaft in a multi-axis machining apparatus according to an embodiment of the present invention; FIG.
6 to 10 are views showing a machining process of a machining object using a multi-axis machining apparatus according to an embodiment of the present invention;
11 is a view showing a flow path of oil in a multiaxial machining apparatus according to an embodiment of the present invention;
12 is a view showing a rotary joint unit in a multi-axis machining apparatus according to an embodiment of the present invention;
13 is an exploded view of each component of a rotary joint unit in a multi-axis machining apparatus according to an embodiment of the present invention;
14 is a cross-sectional view of a rotary shaft in a multi-axis machining apparatus according to an embodiment of the present invention; And
15 is a view showing a state of a pipe joint in a multi-axis machining apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

FIG. 1 is a view showing the entirety of a multi-axis machining apparatus according to an embodiment of the present invention.

1, a multi-axis machining apparatus according to an embodiment of the present invention includes a rotary unit 100 provided on a base 10, a machining unit 140, an auxiliary machining unit 150, A transfer unit 180, and a rotary joint unit 200. Hereinafter, the rotary joint unit 200 will be described later, and the remaining components will be described first with reference to the other drawings with reference to FIG.

The rotary unit 100 is a component that performs a role of rotating a plurality of workpieces in a clamped state along a predetermined orbit.

2, the rotary unit 100 includes a rotation part 120 formed to be rotatable with respect to a center point, and a rotary part 120 provided at a position eccentric from the center point of the rotation part 120, And a plurality of clamping portions 130 for fixing the clamping portions 130.

That is, the clamping unit 130 is circulated along a predetermined trajectory with respect to the central point of the rotation unit 120, and a clamper 132 for fixing the object to be processed is formed on the front surface.

The rotation part 120 is provided with a guide frame 110 for guiding the rotation of the rotation part 120. The rotation part 120 is provided with a plurality of inserts 130 for insertion of the clamping part 130, Holes are formed. The clamping part 130 is rotatably inserted into the insertion hole with reference to the center point, so that the workpiece can be rotated at various angles.

The machining unit 140 includes a plurality of machining parts provided around the rotary unit 100 and machining a workpiece fixed to the clamping part 130 that rotates according to the rotation of the rotation part 120 . At this time, the machining portion can be formed to be able to change the tool so as to perform various machining operations, and can be combined with the numerical control system to perform various machining operations such as milling, drilling, boring, tapping and the like.

Accordingly, the object to be processed is processed through the plurality of processing parts in the process of circulating the clamping part 130 in a predetermined orbit. At this time, the position, the number, the kind of the processing step and the like of the processing part may be designed to be suitable for the product to be processed.

In the case of this embodiment, a ball pin used for a mechanical device such as an automobile is applied as a product to be processed, and it is processed through a total of eight kinds of processes. Of course, it goes without saying that various settings other than the present embodiment can be applied.

As shown in FIG. 3, in this embodiment, the rotary unit 100 is divided into eight regions for performing eight processing steps.

First, in the region A, the process of fixing the workpiece to the clamping portion 130 proceeds. At this time, although not shown, the object to be processed may be transferred by another transfer robot and transferred to the clamping unit 130.

Next, the machining portions are arranged in the regions B and E, respectively, through which the rough machining for forming the head portion of the ball pin in the region B, the finishing machining for forming the head portion of the ball pin in the region C, A roughing process for forming a corner portion, and a finishing process for forming a corner portion in the E region.

In the F region, the workpiece is transferred to the auxiliary processing unit 150 side by the transfer unit 180 so as to process the remaining portion of the entire area to be processed, which is clamped by the clamping portion 130 and remains as the blank region. Is performed, which will be described later.

Thereafter, in the G region, the burnishing process is performed on the head portion of the ball pin, and in the H region, the process of removing the object to be processed is performed. At this time, the object to be machined may be taken out by a separate transfer robot as in the A area.

As described above, according to the present invention, various processing steps of the object to be processed can be performed simultaneously by the rotary unit 100 to be rotated and the processing unit 140 provided around the rotary unit 100, The productivity can be greatly improved.

On the other hand, in the case of this embodiment, it may further include a support unit 50 (see FIG. 1) for rotatably supporting the rotary unit 100. 4 and 5, the supporting unit 50 includes a driving unit (not shown), a fixed frame 60, and a rotating shaft 70, The figure is shown in detail.

4, the stationary frame 60 includes a first body portion 61 and a support portion 63, and a through hole 62 is formed in the first body portion 61. As shown in FIG. The rotating shaft 70 is inserted through the through hole 62 of the fixed frame 60 and the front end of the rotating shaft 70 is connected to the rotating part 120.

The rotation shaft (70) is rotatably formed by the driving unit, and transmits the rotation force transmitted by the driving unit to the rotation unit (120). Although not shown, a bearing may be provided between the rotating shaft 70 and the fixed frame 60 for smooth rotation of the rotating shaft 70.

In the present embodiment, the support portion 63 of the fixed frame 60 is connected to the first body portion 61 in a relatively retracted manner to form a clearance space 64 in front of the first body portion 61. This is to prevent the rear end of the clamping part 130 from colliding with the support part 63 during the rotation of the clamping part 130 by the rotation part 120.

5, the rotation shaft 70 includes a second body 71, and a hollow 72 is formed in the rotation shaft 70 along the longitudinal direction of the rotation shaft 70. As shown in FIG. The hollow 72 functions to insert an oil flow pipe connected from the rotary joint unit 200 (see FIG. 1), and details thereof will be described later.

FIGS. 6 to 10 are views showing a machining process of a machining object using a multi-axis machining apparatus according to an embodiment of the present invention.

First, as shown in Fig. 6, the workpiece 1 is fixed by the clamper 132 of the clamping part 130. As shown in Fig. This process may be performed in the area A of the rotary unit 100 as described above.

Then, the clamping part 130 passes through the area B to the area E according to the rotation of the rotation part 120. The roughing of the head, the finishing of the head, the roughing of the neck, Finishing is done. As shown in Fig. 7, the object to be processed 1 has a shape in which the head 2, the core 3, and the threaded portion 4 are processed.

In order to process the remaining portion of the entire area of the workpiece 1 that has been clamped by the clamping portion 130 and remains as an unprocessed region in a state where the clamping portion 130 reaches the F region as described above, A process of transferring the object to be machined to the auxiliary processing unit 150 side fixed to the auxiliary frame 155 (see Fig. 1) is performed by the transfer unit 180 as shown in Figs.

The transfer unit 180 is disposed adjacent to the auxiliary clamping unit 160 provided in the auxiliary processing unit 150 from an adjacent area of the clamping unit 130 that has been rotated to a predetermined position, And a transfer part 184 for transferring the workpiece 1 linearly along the guide part 182. The guide part 182 is provided with a guide part 182 extending from the guide part 182.

The transfer unit 184 is provided at its upper end with a fixing means 185 for fixing the cores 3 of the object 1 so that the transfer unit 184 grips the object 1, And can be transferred from the clamping part 130 to the auxiliary clamping part 160. The auxiliary clamping unit 160 is provided with a clamper 162 similar to the clamping unit 130 to fix the head 2 of the object 1 to be processed.

The auxiliary workpiece 170 of the auxiliary processing unit 150 is to process an unprocessed area of the workpiece 1 fixed to the auxiliary clamping unit 162. The workpiece 1 is a full- .

10, the workpiece 1 processed by the auxiliary processing unit 150 is transmitted to the clamping unit 130 located in the F region of the rotation unit 120 through the transfer unit 180 . The workpiece 1 is burnished by passing through the G region and the H region in accordance with the rotation of the rotation unit 120. And can be taken out to the outside.

The processing of the object 1 is completed through the process described above.

On the other hand, since the plurality of clamping parts 130 mounted on the rotary unit 100 are rotated at a frequent frequency during the machining process, it is necessary to supply oil for relieving the friction. Hereinafter, the components for supplying such oil will be described.

11, a rotary joint unit 200 is provided at the rear end of the rotary shaft 70 in this embodiment, and a hollow 72 is formed in the rotary shaft 70.

The hollow 72 is provided with a plurality of oil flow tubes 202 extending from the front end of the rotary joint unit 200 to the plurality of clamping portions 130 to flow the oil. That is, a plurality of oil flow tubes 202 are provided to correspond to the respective clamping portions 130 and are connected to the clamping portion 130 through the hollow of the rotary shaft 70 from the rotary joint unit 200.

Referring again to FIG. 2, in the rotary unit 120 of the rotary unit 100, a first passage hole 122, a recessed groove 124, and a second passage hole 126 are formed in this embodiment .

The first through hole 122 communicates with the hollow 72 of the rotating shaft 70 so that the plurality of oil flow tubes 202 pass through. The recessed groove 124 extends radially around the first through hole 122 and is recessed so that the separate oil flow pipe 202 branching from the first through hole 122 into a plurality of branches can be seated. . The second through-hole 126 is formed at the end of the depression groove 124 so that the separate oil flow pipe 202 branched as described above is inserted.

That is, in the present embodiment, the oil flow pipe 202 is connected to the clamping unit 200 through the rotary joint unit 200, the hollow 72, the first passage hole 122, the recessed groove 124, To the rear end of the clamping unit 130, and can transmit the oil to the clamping unit 130.

However, since the rotation part 120 is continuously rotated in one direction, there is a problem that the oil flow tube 202 may be twisted according to the rotation of the rotation part 120. [ Accordingly, in the case of the present embodiment, the rotary joint unit 200 is provided to solve such a problem.

FIG. 12 is a view showing a state of a rotary joint unit 200 in a multi-axis machining apparatus according to an embodiment of the present invention, and FIG. 13 is a cross-sectional view of a rotary joint unit 200 according to an embodiment of the present invention, (200) according to an embodiment of the present invention.

12 and 13, the rotary joint unit 200 includes a rotary shaft 210 and a pipe joint 230 in this embodiment.

The rotary shaft 210 shares the same rotational axis as the rotational part 120 of the rotary unit 100 and rotates at the same speed as the rotational part 120. A plurality of oil passages 214, Direction. The plurality of oil passages 214 are individually connected to the oil flow pipe 202.

That is, one oil passage 214 is connected to one oil flow pipe 202, and the rotary shaft 210 is rotated at the same speed as the rotation section 120, so that even when the rotation section 120 is rotated, The twist of the oil flow pipe 202 does not occur due to the rotation of the oil flow pipe 210.

12 to 14, the rotary shaft 210 includes a plurality of inflow passages 212 connected to the ends of the oil passages 214 from the circumferential surface of the rotary shaft 210 . That is, the oil may flow into the inflow channel 212 through the circumferential surface of the rotary shaft 210 and may be transmitted to the oil channel 214. In order to supply oil through the circumferential surface of the rotary shaft 210 as described above, a pipe joint 230 is provided.

12, 13, and 15, the pipe joint 230 is formed with a center hole 234 into which the rotary shaft 210 is rotatably inserted, And is separately provided to be connected to an external oil supply unit for supplying oil and to supply oil to the inflow channel 212 and the oil channel 214.

At this time, a plurality of the pipe joints 230 are provided and are provided at positions corresponding to the respective inflow channels 212 formed at different positions relative to each other. That is, one pipe joint 230 is formed to transmit oil to one inflow channel 212.

In the present embodiment, the pipe joint 230 is connected to the oil supply unit and is connected to the connection channel 232. The connection pipe 232 is connected to the connection channel 232 and surrounds the center hole 234 And an annular oil passage 235 formed in the shape of a ring to introduce oil into the oil passage 212.

Accordingly, the oil introduced through the connection passage 232 is filled in the ring-shaped annular oil passage 235, and oil is supplied regardless of the position of the oil passage 212 due to the rotation of the rotary shaft 210 It will be possible.

Since a plurality of the pipe joints 230 are continuously provided along the longitudinal direction of the rotary shaft 210, in order to prevent leakage of oil between the adjacent pipe joints 230, in the present embodiment, 234 may be provided with a pair of sealing members 220 at both ends thereof.

For smooth rotation of the rotary shaft 210, the present embodiment may further include a bearing assembly. 12 and 13, the bearing assembly includes a ring-shaped bearing housing 240 provided at both ends of the rotary shaft 210, and a ring-shaped bearing housing 240 disposed between the bearing housing 240 and the rotary shaft 210 And may include a bearing 245 provided therein.

The rotary joint unit 200 can smoothly supply the oil to the respective clamping portions 130 regardless of the rotation of the rotary portion 120 of the rotary unit 100. In particular, Rotating at the same speed as the rotating portion 120 of the rotary unit 100, it is possible to prevent the oil flow pipe 202 from being twisted.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

10: base 50: support unit
60: stationary frame 70: rotating shaft
100: Rotary unit 110: Guide frame
120: rotation part 130: clamping part
140: machining unit 150: auxiliary machining unit
160: auxiliary clamping unit 170:
180: transfer unit 200: rotary joint unit
202: Oil flow tube 210: Rotary shaft
220: sealing member 230: pipe joint
240: Bearing housing 245: Bearing

Claims (7)

A rotation part formed to be rotatable with respect to a center point and having a plurality of insertion holes formed at a position eccentric from the center point and a rotation part inserted into the insertion hole so as to be rotatable with respect to a center point so as to fix the object, A rotary unit including a plurality of protruding clamping portions; A supporting unit including a driving unit and a rotating shaft connected to the rotating unit at a front end thereof to transmit the rotating force of the driving unit to the rotating unit and having a hollow inside; Wherein the rotating portion includes a first through hole communicating with the hollow, a recessed recess extending radially around the first through hole, and a second through hole formed at an end of the recess, A rotary joint unit provided in an apparatus, which receives oil from an oil supply unit and transfers the oil to the plurality of clamping units,
A rotary shaft having a plurality of oil passages which share the same rotational axis as the rotational portion and rotate at the same speed as the rotational portion and through which oil flows,
A pipe joint formed with a center hole into which the rotary shaft is rotatably inserted and fixed to surround the rotary shaft and connected to the oil supply unit to introduce oil into the oil passage; And
Passing through the hollow from the front end of the rotary joint unit so as to correspond to any one of the plurality of oil passages and the plurality of clamping parts, is passed through the first through hole and is seated in the recessed recess, A plurality of oil flow tubes passing through the second through holes at an end thereof to extend rearwardly of the rotating portion and then connected to a rear end portion of the clamping portion to cause oil to flow to the clamping portion;
A rotary joint unit of the multi-axis machining apparatus. The method according to claim 1,
Wherein the plurality of oil passages have different lengths from each other. 3. The method of claim 2,
The rotary shaft includes:
And a plurality of inflow channels connected to an end of each of the oil channels from a peripheral surface of the rotary shaft. The method of claim 3,
Wherein the pipe joint is provided for each position corresponding to the plurality of inflow channels. 5. The method of claim 4,
Wherein the pipe joint comprises:
A connection channel connected to the oil supply unit and supplied with oil; And
An annular oil passage communicating with the connection passage and formed in a ring shape so as to surround the center hole to introduce oil into the oil passage;
And a rotary joint unit of the multi-axis machining apparatus. 6. The method of claim 5,
Wherein the pipe joint further comprises a pair of sealing members provided at both ends of the center hole. The method according to claim 1,
Further comprising: a bearing assembly including ring-shaped bearing housings provided at both ends of the rotary shaft, and a bearing provided between the bearing housing and the rotary shaft.
KR1020160023186A 2016-02-26 2016-02-26 Rotery Joint Unit for Multiaxis Processing Apparatus KR101756874B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210126364A (en) * 2020-04-10 2021-10-20 김숙자 Jig device for making hole of reaction shaft
KR20210126363A (en) * 2020-04-10 2021-10-20 김숙자 System for making hole of reaction shaft

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050046181A1 (en) * 2003-08-28 2005-03-03 Falconer Darcy Raymond Fluid rotary union

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050046181A1 (en) * 2003-08-28 2005-03-03 Falconer Darcy Raymond Fluid rotary union

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210126364A (en) * 2020-04-10 2021-10-20 김숙자 Jig device for making hole of reaction shaft
KR20210126363A (en) * 2020-04-10 2021-10-20 김숙자 System for making hole of reaction shaft
KR102368393B1 (en) * 2020-04-10 2022-02-28 (주)티앤지세정 System for making hole of reaction shaft
KR102368394B1 (en) * 2020-04-10 2022-02-28 (주)티앤지세정 Jig device for making hole of reaction shaft

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