KR20160090636A - machining center with double spindle head - Google Patents

machining center with double spindle head Download PDF

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Publication number
KR20160090636A
KR20160090636A KR1020150010678A KR20150010678A KR20160090636A KR 20160090636 A KR20160090636 A KR 20160090636A KR 1020150010678 A KR1020150010678 A KR 1020150010678A KR 20150010678 A KR20150010678 A KR 20150010678A KR 20160090636 A KR20160090636 A KR 20160090636A
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KR
South Korea
Prior art keywords
axis
spindle
machining
main saddle
main
Prior art date
Application number
KR1020150010678A
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Korean (ko)
Inventor
이준두
강은정
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(주)유지인트
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Priority to KR1020150010678A priority Critical patent/KR20160090636A/en
Publication of KR20160090636A publication Critical patent/KR20160090636A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/08—Milling machines not designed for particular work or special operations with a plurality of vertical working-spindles
    • 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
    • B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
    • 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
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

The present invention relates to a double spindle head machining center, comprising: a main saddle connected to one Z-axis screw and movable in the Z-axis direction; An X-axis linear guide connected to a rear surface of the main saddle for moving the main saddle in an X-axis direction; A machine tool portion in which two double spindles are fixedly installed on the front surface of the main saddle at regular intervals so as to simultaneously perform the same machining on the two workpieces; And at least one transfer stage capable of positioning the workpiece and being movable in the Y axis direction by a Y axis linear guide, wherein any one of the spindles of the double spindle is independently moved in the Z axis, And a transfer unit is provided.
It is an object of the present invention to simultaneously perform the same machining of two workpieces, to easily and quickly perform fine machining errors that may occur during machining, and to simultaneously perform mass machining through the same machining It provides a machining center that can significantly reduce the overall machining time.

Description

Double spindle head machining center

The present invention relates to a machining center, and more particularly, to an improved double-spindle machine capable of simultaneously machining two or more workpieces at the same time, and capable of performing fine machining errors that can occur during machining easily, Head machining center.

In general, a machine tool having an automatic tool changer (ATC) attached thereto for automatically exchanging a tool with a numerically controlled machine tool (NC) is referred to as a machining center.

Such a machining center automatically processes workpieces requiring various operations such as milling, boring, or cutting, and is classified into a horizontal machining center or a vertical machining center according to the position of the main shaft, and is disposed in the X, Y, and Z directions It is designed with a structure including three axes.

In other words, the vertical machining center is capable of rotating a plurality of machining tools to the rotation drive means so that the tool can be rotated when the tool is selected. The selected tool is removed from the tool magazine, the tool mounted on the spindle is removed, Therefore, when all tools necessary for machining are mounted on the tool magazine, it is possible to perform various operations in one machining center.

However, since the conventional vertical machining center constitutes only one spindle, there is a disadvantage in that the productivity is deteriorated due to a long work time in continuous machining of the workpiece.

In addition, since the conventional vertical machining center constitutes only one spindle, the productivity is deteriorated because a long time is required in the continuous machining of the workpiece, and the demand for the multifunction universal machine in the cutting machine dedicated for cutting, There has been a problem in that it can not meet market demands and changes such as demands for processing objects to be processed at the same time to increase production efficiency.

In order to shorten the continuous process and the process time, a vertical machining center having a double spindle structure is proposed in the invention disclosed in Korean Utility Model No. 10-2009-0111489 (published on Oct. 27, 2009).

1 is a view showing a conventional vertical machining center having a double spindle structure. 1, a conventional vertical machining center having a double spindle structure includes a bed portion 10, a Z-axis transfer unit 20 (front and rear direction, column portion 30, X-axis transfer unit 40, A spindle SP1 (SP2), an automatic tool changing unit 60, and a control unit 70. The Y-axis feed unit 50 includes a Y-axis feed unit (right and left direction)

The bed section 10 is configured such that the table 11 capable of moving in the Z-axis direction, that is, in the Z-axis direction, by the Z-axis transfer unit 20 while the workpiece is being mounted is minimized, And is made into a casting. Here, the bed part 10 is filled with a filling material (not shown) such as mortar so as to prevent mechanical tremor due to mechanical static and dynamic accuracy correction and machining cutting load during processing.

However, in the conventional vertical machining center having the double spindle structure as described above, each of the two spindles is provided with the upper and lower (Y axis) transfer units. However, in the case of carrying out the same machining on the same workpiece in a large amount, There is a possibility that a machining error due to independent drive is generated. Alternatively, even when a single vertically moving unit is provided and simultaneous machining is carried out, So that it is difficult to correct the error, and it takes a long time to manually correct the error. In addition, since it is constituted by one workpiece supporting stage, it is difficult to process a large number of workpieces at the same time, resulting in a decrease in process efficiency and a difficulty in precise microfabrication.

Korean Public Release No. 10-2009-0111489 (Open date: October 27, 2009)

It is an object of the present invention to solve the above-described problems, and it is an object of the present invention to provide a machining apparatus capable of simultaneously machining two workpieces, capable of easily and finely correcting fine machining errors that may occur during machining, It is an object of the present invention to provide a machining center which can not only be mass-processed easily but also can shorten the entire machining process time.

According to an aspect of the present invention, there is provided a main saddle which is connected to a Z-axis screw and is movable in a Z-axis direction; An X-axis linear guide connected to a rear surface of the main saddle for moving the main saddle in an X-axis direction; A machine tool portion in which two double spindles are fixedly installed on the front surface of the main saddle at regular intervals so as to simultaneously perform the same machining on the two workpieces; And at least one transfer stage capable of positioning the workpiece and being movable in the Y axis direction by a Y axis linear guide, wherein any one of the spindles of the double spindle is independently moved in the Z axis, And a transfer unit is provided.

Preferably, the main saddle further includes an integrated controller for controlling driving of the main saddle, the X and Y-axis linear guides, and the sub-axis feeder, and a main motor for driving the Z- And a servo motor for driving the screw for Z-axis movement is installed at the upper end of the auxiliary shaft transfer part.

Preferably, the main motor may be a servo motor, and the integrated control unit may be connected to the main saddle, the X and Y-axis linear guides, and the W-axis transfer unit to perform CNC numerical control, Axis linear guide, and two fixed spaced apart from each other at a lower end of the main saddle in a direction parallel to the X-axis linear guide.

In addition, the machine tool portion may include a first spindle module including a first spindle rotating at a high speed, a first spindle housing for supporting the spindle, and a first spindle motor for rotating the spindle, A second spindle motor, and a second spindle motor connected to the main saddle and independently moving the second spindle in the Z-axis direction, And a second spindle module provided as a sub-axis transferring part.

The present invention as described above has a sub axis transferring part capable of simultaneous machining at the same time through two spindles and capable of independently and Z-axis transferring to any one of the spindles itself, so that a fine machining error Which can be easily and quickly and precisely calibrated. In addition, it provides a machining center that can be mass-processed easily by simultaneous machining and can greatly shorten the entire machining process time.

FIG. 1 is a view showing a conventional vertical machining center having a double spindle structure,
2 is a side view showing the construction of a double spindle head machining center according to an embodiment of the present invention,
3 is a view showing a structure of a double spindle as viewed from above in the construction of a double spindle head machining center according to an embodiment of the present invention,
4 is a side view of a double spindle structure of a double spindle head machining center according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish it, will be described with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. The embodiments are provided so that those skilled in the art can easily carry out the technical idea of the present invention to those skilled in the art.

In the drawings, embodiments of the present invention are not limited to the specific forms shown and are exaggerated for clarity. Also, the same reference numerals denote the same components throughout the specification.

The expression "and / or" is used herein to mean including at least one of the elements listed before and after. Also, singular forms include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations and elements referred to in the specification as " comprises "or" comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

FIG. 2 is a side view showing the construction of a double spindle head machining center according to an embodiment of the present invention, and FIG. 3 is a view showing a structure of a double spindle viewed from above in the construction of a double spindle head machining center according to an embodiment of the present invention .

As shown in FIGS. 2 and 3, in the embodiment of the present invention, the double spindle 250 machining center includes main saddle 100 connected to one Z-axis screw and movable in the Z-axis (up and down) direction; An X-axis linear guide 300 connected to a rear surface of the main saddle 100 to move the main saddle in the X-axis (left and right) direction; A machine tool portion 200 in which two double spindles are fixedly installed on the front surface of the main saddle at regular intervals so as to simultaneously perform the same machining on the two workpieces; And at least one transfer stage (400) capable of positioning the workpiece and being movable in the Y axis direction by a Y-axis (back and forth) linear guide (410), wherein any one of the spindles And a sub-axis transferring unit 230 that is movable in the Z-axis direction and capable of Z-axis correction is provided.

As described above, according to the embodiment of the present invention, two spindles 250 are arranged at regular intervals on one main saddle 100 capable of carrying Z-axis and X-axis, and a plurality of spindles 250 A plurality of spindles 250 are disposed on the spindle 250 and a plurality of spindles 250 are disposed on the spindle 250. A plurality of spindles 250 are disposed on the spindle 250, ), It is possible to provide an improved machining center capable of easily, quickly, and precisely correcting minute machining errors that may occur in simultaneous machining by driving two spindles 250 simultaneously.

The conventional machining center is composed of three axes X, Y, and Z. However, in the embodiment of the present invention, two double spindles 250 are installed and the two spindles 250 are simultaneously moved along the Z axis, The main saddle 100 and the main saddle 100 can be simultaneously machined in the three axes of the X, Y and Z axes through the main Z-axis feed screw 150 connected to the saddle 100, A double spindle magnetic center having individual independent correction structures capable of precisely and quickly correcting a Z-axis machining error that may occur in processing can be provided. . That is, if a Z-axis positioning error occurs in the double spindle 250, the position of the Z-axis of the spindle equipped with the sub-axis transferring part 230 is finely adjusted with respect to any one of the fixed spindles, The machining error can be corrected.

More specifically, as shown in FIGS. 2 and 3, the main saddle 100 is a single support for holding and supporting the entirety of the two spindles 250, and the X- And it is possible to feed the Z-axis through a vertically formed Z-axis (upper and lower).

The main saddle 100 is provided with a main servomotor 155 for driving the Z axis feed screw 150 at its upper end and a spindle 250 support frame connected to the Z axis screw at the lower end and vertically movable in the Z axis And the two spindles 250 arranged in the horizontal direction at regular intervals in the support frame can simultaneously move in the Z axis.

The X-axis linear guide 300 is connected to the rear surface of the main saddle 100 by a ball screw so that the entire main saddle 100 can be moved in the X-axis direction through the X-axis linear guide 300. The lower end of the machine tool part 200 including the spindle 250 is provided with two transfer stages 400 capable of positioning the workpiece and transferring the workpiece to the Y axis (forward and backward) 3-axis drive and machining of XYZ of machining center becomes possible.

3, the double spindle head machining center according to the embodiment of the present invention proposes a structure in which two spindles 250 are arranged side by side at regular intervals and one of the spindles 255 It is possible to individually and independently feed the Z axis by the auxiliary axis feeder 230 so that the two workpieces can be simultaneously processed at the same time. Furthermore, when a Z-axis positioning error due to tool change or other variables occurs, it is possible to quickly and independently correct the Z-axis position of any one of the spindles 255 through the sub-axis transferring part 230 This not only enables precise processing by accurate correction, but it also shortens the time required for error correction and shortens the entire process time.

In addition, it is possible to position a plurality of workpieces side by side on one transfer stage 400 and perform the same machining simultaneously by the two respective spindles 250, wherein the transfer stage 400 is moved in the Y- This makes it possible to machine three axes (XYZ axis) of the machining center. However, when a plurality of workpieces are placed in one transfer stage 400 and simultaneously processed in the same manner, if a large number of workpieces are to be machined in a large amount, the machined workpiece is improved and other workpieces are transferred to the transfer stage 400 ), There is a problem that the process time required for the preparation work is prolonged.

Therefore, in the embodiment of the present invention, since the main saddle 100 on which the machine tool unit 200 is mounted is secured to a sufficient distance through the X-axis linear guide 300 having a long stroke, After the machining process is completed in one transfer stage 400, the two transfer stages 400 are installed in parallel to the X axis direction and then transferred to the other transfer stage 400 through the X axis linear guide 300 directly to the main saddle 100) can be moved to perform a machining process. Thus, a large number of machining processes can be performed, and the entire process time can be greatly shortened. In addition, unlike the above-described embodiment, a large number of transfer stages 400 can be continuously provided by installing four, eight, or the like.

The double spindle 250 machining center having the auxiliary shaft transfer part 230 according to the embodiment of the present invention is mounted on the main saddle 100 and the X and Y axis linear guides 300 and 410 and the auxiliary shaft transfer part 230 It is preferable to further include an integrated control unit for controlling the driving of the main saddle 100 and the X and Y-axis linear guides 410 and the auxiliary axis transfer unit 230 to control the CNC numerically. This is because the process control and the control are convenient and the precision of the process can be improved by integrally controlling the transferring and the processing of the linear guide and the auxiliary shaft transferring unit 230 to one integrated control unit.

In addition, the CNC numerical control by the integrated control unit of each linear guide and the feed unit allows the precision of machining to be improved, and the correction can be performed as required, thereby shortening the entire process time do.

4 is a side view of a double spindle structure of a double spindle head machining center according to an embodiment of the present invention. 3 and 4, the machine tool part 200 having the double spindle 250 according to the embodiment of the present invention includes a first spindle 251 rotating at a high speed, A first spindle module including a first spindle housing 253 for rotating the spindle and a first spindle motor for rotating the spindle and a second spindle 255 fixed to the first spindle module side by side in the X- A second spindle housing 257, a second spindle motor, and a second spindle, which is connected to the main saddle and is provided with a sub-axis transferring unit 230 capable of Z-axis correction by independently moving the second spindle in the Z- Module.

Here, the sub-axis transferring unit 230 includes a Z-axis screw so that the second spindle 250 can independently transfer the Z-axis to the rear surface of the main saddle, and the servo motor 235 is connected to the upper portion of the sub- It is a structure that can move Z axis.

That is, the auxiliary shaft transfer unit 230 includes a servo motor 235 mounted on the upper end of the main saddle 100, a screw connected downwardly to the servo motor, a nut connected to the screw, And a connection frame connected to the first spindle 257. The second spindle is movable in the Z axis by vertically moving the connection frame while the screw is rotated by driving the servo motor 235. [

In this embodiment of the present invention, a tool is mounted on each of the two double spindles 250 to perform the same machining at the same time, so that a minute length error may occur with a tool not replaced at the time of tool change, The present invention proposes a structure in which any one of the spindle modules is provided with the auxiliary axis transfer part 230 so that the error correction can be performed to improve the error correction time to about 3 minutes Providing an improved double spindle head machining center that can significantly reduce overall process time.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: main saddle, 200: machine tool part, 230: auxiliary axis feed part,
250: Double spindle, 300: X-axis linear guide, 400: Transfer stage
410: Y-axis linear guide

Claims (7)

A main saddle connected to one Z-axis screw and movable in the Z-axis direction;
An X-axis linear guide connected to a rear surface of the main saddle for moving the main saddle in an X-axis direction;
A machine tool portion in which two double spindles are fixedly installed on the front surface of the main saddle at regular intervals so as to simultaneously perform the same machining on the two workpieces;
At least one transfer stage capable of positioning the workpiece and being movable in the Y-axis direction by a Y-axis linear guide,
Wherein the spindle of any one of the double spindles is independently moved in the Z-axis direction to provide a Z-axis correcting auxiliary axis transferring portion.
The method according to claim 1,
Further comprising an integrated control unit for controlling driving of the main saddle, the X and Y-axis linear guides, and the auxiliary shaft transfer unit.
The method of claim 1,
A main motor for driving the main saddle to move in the Z axis is installed on an upper end of the main saddle,
Wherein the auxiliary shaft transfer unit is provided with a servo motor for driving a screw for Z-axis movement at an upper end thereof.
The method of claim 3,
Wherein the main motor is a servo motor.
3. The method of claim 2,
The integrated control unit,
And the CNC numerical control is performed by connecting the main saddle, the X and Y-axis linear guides, and the W-axis feeder.
6. The method of claim 5,
Wherein the transfer stage comprises:
Axis linear guides and two spaced apart from each other at a predetermined distance in a direction parallel to the X-axis linear guides at the lower ends of the main saddles.
6. The method of claim 5,
The machine tool portion,
A first spindle module including a first spindle rotating at a high speed, a first spindle housing for supporting the spindle, and a first spindle motor for rotating the spindle,
A second spindle housing, a second spindle motor, and a second spindle motor connected to the main saddle so as to independently move the second spindle in the Z-axis direction, the second spindle housing being coupled to the first spindle module, And a second spindle module provided with a sub-axis transferring section capable of Z-axis correction.


KR1020150010678A 2015-01-22 2015-01-22 machining center with double spindle head KR20160090636A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110216494A (en) * 2019-07-11 2019-09-10 惠州隆洋国数科技有限公司 A kind of big angle rotary mechanism
CN110524312A (en) * 2019-09-28 2019-12-03 中山沃尔夫机电股份有限公司 A kind of same dynamic machining tool of efficiently more head of a bed multiaxises
KR20200020378A (en) * 2018-08-17 2020-02-26 (주)성현 테크놀로지 Fine drill processing machine
KR102095451B1 (en) 2019-01-10 2020-04-23 에프에프지디엠씨 주식회사 Machining center
KR102131240B1 (en) 2019-08-06 2020-07-08 주식회사 위멘트 machining center with double spindle head for controling indpendent position
KR102188159B1 (en) 2020-03-25 2020-12-07 에프에프지디엠씨 주식회사 Vertical machning center applied with APC with rotational configuration
KR20230149089A (en) 2022-04-19 2023-10-26 에프에프지디엠씨 주식회사 Machining center that compensates for the movement of the column part

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090111489A (en) 2008-04-22 2009-10-27 서대식 2-Spindle Type Vertical Machining Center

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090111489A (en) 2008-04-22 2009-10-27 서대식 2-Spindle Type Vertical Machining Center

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200020378A (en) * 2018-08-17 2020-02-26 (주)성현 테크놀로지 Fine drill processing machine
KR102095451B1 (en) 2019-01-10 2020-04-23 에프에프지디엠씨 주식회사 Machining center
CN110216494A (en) * 2019-07-11 2019-09-10 惠州隆洋国数科技有限公司 A kind of big angle rotary mechanism
KR102131240B1 (en) 2019-08-06 2020-07-08 주식회사 위멘트 machining center with double spindle head for controling indpendent position
CN110524312A (en) * 2019-09-28 2019-12-03 中山沃尔夫机电股份有限公司 A kind of same dynamic machining tool of efficiently more head of a bed multiaxises
KR102188159B1 (en) 2020-03-25 2020-12-07 에프에프지디엠씨 주식회사 Vertical machning center applied with APC with rotational configuration
KR20230149089A (en) 2022-04-19 2023-10-26 에프에프지디엠씨 주식회사 Machining center that compensates for the movement of the column part

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