KR20090032675A - Cnc machine tool having a sliding member movable at a high speed - Google Patents

Cnc machine tool having a sliding member movable at a high speed Download PDF

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Publication number
KR20090032675A
KR20090032675A KR1020070098108A KR20070098108A KR20090032675A KR 20090032675 A KR20090032675 A KR 20090032675A KR 1020070098108 A KR1020070098108 A KR 1020070098108A KR 20070098108 A KR20070098108 A KR 20070098108A KR 20090032675 A KR20090032675 A KR 20090032675A
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KR
South Korea
Prior art keywords
sliding member
machine tool
sliding
machine body
screw rod
Prior art date
Application number
KR1020070098108A
Other languages
Korean (ko)
Inventor
펭-티엔 첸
Original Assignee
펭-티엔 첸
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Application filed by 펭-티엔 첸 filed Critical 펭-티엔 첸
Priority to KR1020070098108A priority Critical patent/KR20090032675A/en
Publication of KR20090032675A publication Critical patent/KR20090032675A/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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/225—Feeding members carrying tools or work not mechanically connected to the main drive, e.g. with separate motors
    • 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
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/385—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously using a gear and rack mechanism or a friction wheel co-operating with a rail
    • 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
    • B23Q2005/005—Driving or feeding mechanisms with a low and a high speed mode

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

Abstract

A CNC machine tool having a sliding member moving at a high speed is provided to reduce the volume of the CNC machine tool as a second sliding member is movable to the first sliding member. A CNC(Computer Numerical Controlled) machine tool having a sliding member moving at a high comprises: a machine main body(10); a first driving part(30); a first sliding member(40) being driven with the first driving part and moving on the machine main body in a specific direction; a second driving part(60) positioned between the first sliding member and a second sliding member(70); and the second sliding member being driven with the second driving part and moving on the first sliding member in the specific direction.

Description

CNC Machine Tool Having a Sliding Member Movable at a High Speed}

TECHNICAL FIELD The present invention relates to machine tools, specifically Computer-Numerical-Controlled (CNC) machine tools.

According to FIG. 1, a conventional CNC machine tool includes a machine body 1 consisting of a lower sheet 101 and a post member 102, a substrate 2 that can move along the Y-axis on the lower sheet, and an X- on the substrate. A worktable 3 that can move along an axis, a drive 4 positioned on the post member 102, and a spindle seat 5 driven by the drive and moving along the Z-axis on the post member 102. Workpieces (not shown) can be placed on the worktable 3. The drive unit 4 includes a submotor 401 and a threaded rod 402 which is driven by the submotor 401 and rotated on the post member 102. The spindle seat 5 can move perpendicularly to the workpiece placed on the worktable 3 in response to the rotation of the threaded rod 402.

The spindle sheet 5 holds a cutter (not shown) for cutting operation on the workpiece. At the end of the first cut, the first cutter is removed from the workpiece and moved to a safe position by moving upwards a first distance from the cutting position adjacent to the workpiece. Next, the first cutter moves further upward by the second distance to move to the cutter-changing position. In the cutter change position, an automatic cutter change mechanism (not shown) is actuated to first remove the first cutter from the spindle seat 5 and subsequently to move the second cutter over the spindle seat 5. At the end of the cutter change, the second cutter moves downward by a second distance to a safe position, and then further moves downward by a first distance to a cutting position to perform a cutting operation on the workpiece. Since the first and second cutters are moved on the post member 102 only by the spindle sheet 5, the cutter exchange takes a long time, thus reducing the production capacity of the CNC machine tool. In addition, the length of the threaded rod 402 and the height of the post member 102 substantially depend only on the spindle seat for the movement of the first and second cutters. As a result, the volume and manufacturing cost of the CNC machine tool increase.

It is an object of the present invention to provide a CNC machine tool which can overcome the disadvantages of the prior art as mentioned above.

In order to achieve the above object, the machine tool of the present invention comprises a machine body; A first driver; A first sliding member driven by the first driving unit and moving in a direction on a machine body; A second driver positioned on the first sliding member; And a second sliding member driven by the second driving unit and moving along a direction on the first sliding member.

If the main shaft portion is installed on the second sliding member, the main shaft portion moves at high speed on the machine body when the first and second sliding members are simultaneously driven by the first and second driving portions, respectively. Thus, the production capacity of the CNC machine tool is improved.

CNC machine tools according to the invention have the following advantages and effects:

(1) The cutter 91 can move at high speed along the Z-axis, thus improving the production capacity of the CNC machine tool by reducing the time consumed for the cutter change operation.

(2) Since the cutter 91 is located on the second sliding member 70, and the second sliding member 70 is movable relative to the first sliding member 40, the movement of the first sliding member 40. The distance becomes shorter. Thus, the first and second threaded rods 32, 62 are shorter than the threaded rod 402 of a conventional CNC machine tool as shown in FIG. As a result, the volume of the CNC machine tool is reduced. In addition, CNC machine tools can be manufactured at low cost.

The features of the present invention can be clearly understood by the detailed description of the invention in conjunction with the accompanying drawings. Similar components or structures are denoted by like numbers throughout the specification.

2, 3 and 4, a first preferred embodiment of the CNC machine tool of the present invention is a machine body 10, a work table 20, a first drive 30 located on the machine body 10. , On the first sliding member 40 located on the machine body and on the first linear rail portion 50 and the first slide member 4 located between the machine body 10 and the first sliding member 40. The second drive unit 60 located in the, the second sliding member 70 located on the first sliding member 40, the second sliding member 40 and the second positioned between the second sliding member 70 The linear rail part 80 and the main shaft part 90 located on the 2nd sliding member 70 are included.

The machine body 10 includes a lower sheet 11 and a post member 12 fixed on the lower sheet 11 and extending upward from the lower sheet 11 along the Z-axis. In this embodiment, the Z-axis is in the vertical direction. An automatic cutter-changer 100 (see FIG. 4) may be installed at the upper end of the post member 12.

The worktable 20 has a Y-direction drive located on the lower seat 11, a Y-direction sliding member 22 that can move along the Y-axis on the lower seat 11, the lower seat 11 and Y- On the Y-direction linear rail portion 23 located between the directional sliding members 22, on the X-direction drive portion 24 located on the Y-direction sliding member 22, on the Y-direction sliding member 22. A workbench 25 positioned and an X-direction linear rail portion 26 located between the Y-direction sliding member 22 and the workbench 25. The Y-axis drive 21 includes a servomotor 211 and a Y-direction screw rod 212 that is journaled on top of the lower seat 11 and driven and rotated by the servomotor 211. Y-direction threaded rod 212 extends along the Y-axis direction. The X-direction driver 24 includes an X-direction screw rod 242 which is journaled on top of the servomotor 241 and the Y-direction sliding member 22 and driven by the servomotor 241 to rotate. The servomotor 211 rotates the Y-direction threaded rod 212, resulting in the worktable 25 moving back and forth with respect to the post member 12 along the Y-axis. The servomotor 241 rotates the X-direction threaded rod 242, which in turn causes the worktable 25 to move left and right with respect to the post member 12 along the X-axis.

The first drive unit 30 includes a first servomotor 31 and a first screw rod 32 that is journaled on the top of the post member 12 and driven and rotated by the first servomotor 31. The first threaded rod 32 extends along the Z-axis direction.

The first sliding member 40 is located on the front surface of the post member 12 and includes a fixed first internal threaded member 41 coupled with the first threaded rod 32. The first sliding member 40 is driven by the first driver 30 to move perpendicularly to the post member 12 along the Z-axis direction.

The first linear rail portion 50 is fixedly located on the front surface of the post member 12 and includes two parallel first slide rails 51 extending in the Z-axis direction, and the first sliding member 40. It is fixed to the rear surface and comprises two first sliding block portions each capable of sliding along the first slide rail 51. In this embodiment, each first sliding block portion is composed of two first sliding blocks 52, each sliding block being connected to a corresponding slide rail 51 by dovetail tongue and groove engagement. .

The second drive unit 60 includes a second screw rod 62 which is journaled on the front surface of the second servomotor 61 and the first sliding member 40 and driven and rotated by the second servomotor 61. do. The second threaded rod 62 extends in the Z-axis direction. The first and second drives 30 and 60 can be operated simultaneously.

The second sliding member 70 includes a second inner threaded member 71 coupled to the second threaded rod 62. When the first and second drives 30, 60 are actuated simultaneously, the first sliding member 40 moves on the post member 12, and the second sliding member 70 moves on the first sliding member 4. Thus, the main shaft portion 90 can move at high speed along the Z-axis direction with respect to the work table.

The second linear rail portion 80 is fixed to the rear surface of the first sliding member 70, and includes two parallel slide rails 81 extending along the Z-axis direction, and the first sliding member 40. It is fixed to the front surface and includes two second sliding block portions each capable of sliding along the second slide rail 81. In this embodiment, each second sliding block portion is composed of two sliding blocks 82.

The main shaft portion 90 extends along the Z-axis direction and has a bottom portion provided with a cutter 91 for cutting a workpiece (not shown in the figure) located on a work table.

As such, according to FIG. 4, the first and second drive units 30 and 60 are operated simultaneously, so that the cutter 91 is in the cutter-exchange position I and the safety position II shown in FIG. 5 along the Z-axis. ) And the cutting position (III) shown in FIG. 6. As shown in FIG. 5, in the cutter-exchange position I, the first sliding member 40 is positioned at the top with respect to the post member 12, and the second sliding member 70 is arranged in the first sliding member ( 40) is located at the top. As shown in FIG. 6, in the cutting position, the first sliding member 40 is located at the lowest end with respect to the post member 12, and the second sliding member 70 is located at the lowest end with respect to the first sliding member 40. Done.

7 shows a second preferred embodiment of the CNC machine tool of the present invention. In a second preferred embodiment, the second linear rail portion 80 'is fixed to two second slide rails 81', which are fixedly positioned on the first sliding member 40, and to the second sliding member 70. It is similar in structure to the first preferred embodiment except that it includes two second sliding block portions, which are located in each and slide along the second slide rail 81 '. In this embodiment, each second sliding block portion is composed of two sliding blocks 82 '.

8 and 9, a third preferred embodiment of the CNC machine tool of the present invention is provided in the Y-direction drive 21, the lower seat 11, which is located in the lower seat 11 of the machine body 10. Located on the Y-direction sliding member 22, the Y-direction linear rail portion 23, and the Y-direction sliding member 22, located between the lower seat 11 and the Y-direction sliding member 22. To the second drive unit 30, the first sliding member 40 movably positioned on the Y-direction sliding member 22, and the position between the Y-direction sliding member 22 and the first sliding member 40. The first linear rail unit 50, the second drive unit 60 located on the first sliding member 40, the second sliding member 70 located on the first sliding member 40 to be movable, And a second linear rail portion 80 positioned between the first and second sliding members 40, 70. The second sliding member 70 is formed on a work bench.

When the first and second drives 30, 60 are operated simultaneously, the first sliding member 40 moves on the lower seat 11 at a first speed along the X-axis direction, and the second sliding member 70 Moves at a first speed along the X-axis direction on the first sliding member 40. That is, the second sliding member 70 moves with respect to the lower seat 11 at a second speed which is twice the first speed along the X-axis direction.

10, 11 and 12 show a fourth preferred embodiment of the CNC machine tool of the present invention. The fourth preferred embodiment of the CNC machine tool of the present invention is similar to the first preferred embodiment in structure except that the second drive unit 60 is formed of a linear motor. The second drive part 60 is fixedly positioned on the first sliding member 40 and is provided with a long stator member 61 'installed with a plurality of permanent magnets (not shown in the drawing), and has a U-shaped cross section, and the second And a slider 62 'fixedly positioned on the sliding member 70 and surrounding the stator member 61' with both legs. When the linear motor 60 is actuated, a magnetic levitation force is generated between the stator member 61 'and the slider 62', causing the slider 62 'to move relative to the stator member 61'.

1 is a perspective view of a conventional CNC machine tool,

2 is a perspective view of a CNC machine tool according to a first preferred embodiment of the present invention,

3 is a partially exposed perspective view of a CNC machine tool according to a first preferred embodiment,

4 is a side view showing a method for installing an automatic cutter change device in a CNC machine tool according to a first preferred embodiment according to the present invention;

5 is a partial cross-sectional view of a CNC machine tool according to a first preferred embodiment according to the invention when the spindle is in the cutter exchange position,

6 is a partial sectional view of a CNC machine tool according to a first preferred embodiment according to the invention when the spindle is in the cutting position,

7 is a perspective view of a CNC machine tool of a second preferred embodiment according to the invention,

8 is a front view of a CNC machine tool of a third preferred embodiment according to the present invention,

9 is a cross-sectional view of a CNC machine tool of a third preferred embodiment according to the present invention,

10 is a perspective view of a CNC machine tool of a fourth preferred embodiment according to the present invention,

11 is a partial sectional view of a CNC machine tool of a fourth preferred embodiment according to the present invention,

12 is a fragmentary cross-sectional view of the CNC machine tool of the fourth preferred embodiment according to the present invention, taken along the line XII-XII in FIG.

Claims (11)

Machine body 10; First drive unit 30; A first sliding member 40 driven by the first driving unit 3 and moving along a predetermined direction on the machine main body; A second drive unit 60 positioned between the first and second sliding members 40 and 70; And And a second sliding member (70) driven by the second drive unit and moving in the direction on the first sliding member. The first screw rod 32 of claim 1, wherein the first driving unit 30 is driven by the first servo motor 31 and the first servo motor 31 to rotate on the machine body 10. And the first screw rod 32 extends in the direction, and the first sliding member 40 includes a fixed first internal screw member 41 coupled with the first screw rod 32. Machine tool characterized in that. The second screw rod (62) of claim 2, wherein the second drive unit (60) is driven by the second servomotor (61) and the second servomotor (61) to rotate on the first sliding member (40). The second screw rod 62 extends in the direction, and the second sliding member 70 is coupled to the second screw rod 62. Machine tool comprising a. 4. A second slide rail (51) according to claim 3, further comprising a first linear rail portion, said first linear rail portion being fixed to said machine body (10) and extending along said direction, and a first And two first sliding block portions fixedly located on the sliding member (40) and slidable relative to the first slide rail (51). 5. The device of claim 4, further comprising a second linear rail portion (80), wherein the second linear rail portion (80) is fixedly positioned on the second sliding member (70) and two second extending along the direction. A machine tool, characterized in that it comprises a slide rail 81 and two second sliding blocks which are fixedly located on the first sliding member 40 and which can slide along the two second slide rails 81, respectively. . 6. The machine body (10) according to claim 5, wherein the machine body (10) includes a lower member (11) and a post member (12) fixed upwardly from the lower sheet (11) and extending upwardly from the lower sheet (11). The upward direction is a vertical direction, the machine tool further comprising a main shaft portion (90) positioned on the second sliding member (70) and extending along the direction. 6. The machine body (10) according to claim 5, wherein the machine body (10) comprises a lower sheet (11) and a post member (12) fixed to the lower sheet (11) and extending upwardly from the lower sheet (11), wherein the upward direction Is in the horizontal direction, and the second sliding member (70) is formed on a workbench. 5. The system of claim 4, further comprising a second linear rail portion 80 ', wherein the second linear rail portion 80' is fixedly positioned on the first sliding member 40 and extends in the direction. Two slide rails 81 'and two sliding block portions fixedly located on the second sliding member 70 and slidable along the second slide rail 81', respectively. machine tool. 9. The machine body (10) according to claim 8, wherein the machine body (10) comprises a lower member (11) and a post member (12) fixed upwardly and extending upwardly, wherein the upward direction is vertical. And a main shaft portion (90) positioned on the second sliding member (70) and extending in the direction. 9. The machine body (10) according to claim 8, wherein the machine body (10) comprises a lower seat (11) and a post member (12) fixed to the lower seat (11) and extending upwardly from the lower seat (11), The upward direction is a horizontal direction, the machine tool, characterized in that the second sliding member (70) is formed on the workbench. 2. The long stator member (61 ') fixedly positioned on the first sliding member (40), and the second drive part (60) fixedly positioned on the second sliding member (70). It is formed of a linear motor including a slider 62 'shaped to surround the stator member 61' with both legs, so that when the linear motor 60 is operated, the magnetic levitation force is applied to the stator member 61 'and the Machine tool, characterized in that between said slider (62 ') causes said slider (62') to move relative to said stator member (61 ').
KR1020070098108A 2007-09-28 2007-09-28 Cnc machine tool having a sliding member movable at a high speed KR20090032675A (en)

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KR1020070098108A KR20090032675A (en) 2007-09-28 2007-09-28 Cnc machine tool having a sliding member movable at a high speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101236557B1 (en) * 2010-04-29 2013-02-22 이관희 Double spindle gang type cnc lathe
WO2014178559A1 (en) 2013-05-03 2014-11-06 Min Byung Duk Numerically controlled machine tool
KR20160089170A (en) 2015-01-19 2016-07-27 민병덕 Numerical control machine tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101236557B1 (en) * 2010-04-29 2013-02-22 이관희 Double spindle gang type cnc lathe
WO2014178559A1 (en) 2013-05-03 2014-11-06 Min Byung Duk Numerically controlled machine tool
US10118264B2 (en) 2013-05-03 2018-11-06 Byung Duk Min Numerically controlled machine tool
KR20160089170A (en) 2015-01-19 2016-07-27 민병덕 Numerical control machine tool

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