KR20140083077A - Spindle assembly of machine tool - Google Patents

Spindle assembly of machine tool Download PDF

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Publication number
KR20140083077A
KR20140083077A KR1020120150382A KR20120150382A KR20140083077A KR 20140083077 A KR20140083077 A KR 20140083077A KR 1020120150382 A KR1020120150382 A KR 1020120150382A KR 20120150382 A KR20120150382 A KR 20120150382A KR 20140083077 A KR20140083077 A KR 20140083077A
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KR
South Korea
Prior art keywords
air
power chuck
coolant
spindle assembly
flow paths
Prior art date
Application number
KR1020120150382A
Other languages
Korean (ko)
Other versions
KR102015661B1 (en
Inventor
이상민
Original Assignee
두산인프라코어 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to KR1020120150382A priority Critical patent/KR102015661B1/en
Publication of KR20140083077A publication Critical patent/KR20140083077A/en
Application granted granted Critical
Publication of KR102015661B1 publication Critical patent/KR102015661B1/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
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. 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
    • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • B23Q1/0018—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means
    • 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
    • B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
    • B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/02—Driving working spindles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

Disclosed in the present invention is a spindle assembly of a machining tool. The spindle assembly of a machining tool comprises a power chuck (102) chucking and rotating a material; a hydraulic rotary cylinder placed apart from the power chuck (102) and rotating the power chuck (102); and multiple utility supplying passages (103a, 103b) connected with the hydraulic rotary cylinder (101) and the power chuck (102) by multiple lines to have a utility toward the power chuck (102) selected for air or a coolant or alternately used for both of the air and the coolant.

Description

≪ Desc / Clms Page number 1 > Spindle assembly of machine tool &

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle assembly for a machine tool, and more particularly, to a spindle assembly for a machine tool, which can selectively use various types of utilities through a simple and efficient structure, or alternatively, To a spindle assembly of a machine.

Machine tools are widely used for a variety of applications, including turning centers, machining centers, door machining centers, Swiss turnings, electric discharge machines, horizontal NC boring machines and more.

Such a machine tool is provided with a spindle assembly on which a tool is mounted for machining the work.

The spindle assembly rotates at high speed with the tool and is involved in machining the workpiece.

1 is a structural view of a spindle assembly of a machine tool according to the prior art.

FIG. 1 is a structural view of a spindle assembly of a lathe in which the utility supply passage 3 penetrates through a single line from the hydraulic rotary cylinder 1 to the power chuck 2, Discloses a system for supplying a coolant.

Air or coolant is supplied through a single utility supply passage 3 formed up to the hydraulic rotary cylinder 1 and the power chuck 2 so that the material is supplied to the power chuck 2 Chucking or cooling the material.

However, as shown in FIG. 1, at present, it is only a simple piping system that can supply only one utility selected from air or coolant to the power chuck 2.

Therefore, the structure shown in FIG. 1 has a problem that it is impossible to apply to a factory machine that requires multiple types of utilities.

However, the use of several individual spindle assemblies in parallel, which allow different types of utilities to be used individually, can lead to many problems in terms of structure and cost and space, thus requiring a simple and efficient structure improvement in consideration of this.

Korean Patent Application No. 10-2002-0037827

Accordingly, the present invention has been made in order to solve the above-mentioned problems, and its object is to provide a method and apparatus for efficiently selecting a variety of utilities through a simple and efficient structure, or alternately using the utilities, A spindle assembly for a machine tool,

In order to achieve the above object, the present invention provides a power chuck for chucking and rotating a workpiece; A hydraulic rotary cylinder disposed apart from the power chuck and rotating the power chuck; And a multi-utility supply flow path connected to the hydraulic rotary cylinder and the power chuck in a plurality of lines so that the utility directed toward the power chuck can be selectively or alternatively used between air or coolant And a spindle assembly for a machine tool.

The present invention further provides the following specific embodiments with respect to the above embodiment of the present invention.

According to an embodiment of the present invention, the multi-utility supply passage includes an air supply passage formed in a central region between the hydraulic rotary cylinder and the power chuck and through which the air flows, And a coolant supply passage through which the coolant flows.

According to an embodiment of the present invention, a rotary union shaft is fixedly disposed in the power chuck area and transmits any one of the air and the coolant, and the first and second flow paths are formed inside the rotary union shaft. And third and fourth flow paths selectively communicated with the first and second flow paths, respectively, while being disposed at a radially outer side of the rotary union shaft, And a rotary union housing which is formed in the housing.

According to an embodiment of the present invention, a plurality of grooves in which the utility is temporarily stored are formed between the rotary union shaft and the rotary union housing.

According to an embodiment of the present invention, the hydraulic rotary cylinder region is further provided with a flange for restricting flow of the oil, which supports the multiple utility supply flow passage to prevent the rotation of the flow passage rotation stopping flange.

According to the present invention, a spindle assembly for a machine tool is provided that can be used by selecting various utilities through a simple and efficient structure, or alternately using them when necessary.

1 is a structural view of a spindle assembly of a machine tool according to the prior art.
2 is a structural view of a spindle assembly of a machine tool according to an embodiment of the present invention.
FIG. 3 is a view showing the multiple utility supply flow path highlighted in FIG.
4 is an enlarged view of the main part of Fig.
5 is an enlarged view of the power chuck area shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a structural view of a spindle assembly of a machine tool according to an embodiment of the present invention. FIG. 3 is an enlarged view of the multi-utility supply path in FIG. Is an enlarged view of the power chuck area shown in Fig.

Referring to these drawings, a spindle assembly of a machine tool of the present embodiment is applicable to a machine tool such as a lathe, for example, and includes a power chuck 102, a hydraulic rotary cylinder 101, (103a, 103b).

The power chuck 102 serves to chuck and rotate the workpiece. Because it chucks the material by hydraulic pressure, it is also called hydraulic chuck.

The hydraulic rotary cylinder 101 is spaced apart from the power chuck 102 and serves to rotate the power chuck 102 due to the hydraulic pressure.

In the structure of the hydraulic rotary cylinder 101 and the power chuck 102 as described above, since a single line is formed in the prior art, only one utility selected from air or coolant It could be supplied to the power chuck 102 and could not be used alternately between air and coolant.

However, in the case of the present embodiment, the hydraulic rotary cylinder 101 can selectively supply air or coolant by applying multiple utility supply flow paths 103a and 103b between the power chucks 102, They can be supplied to the power chuck 102 alternately.

In other words, the multiple utility supply flow paths 103a and 103b applied to the present embodiment are arranged such that the hydraulic rotary cylinder 101 and the power chuck 102 ) In a plurality of lines.

The multiple utility supply channels 103a and 103b are formed in the central region between the hydraulic rotary cylinder 101 and the power chuck 102 and are connected to the air supply channel 103a through which the air flows, And a coolant supply passage 103b in which the coolant flows.

One air supply passage 103a is formed at the center, while a plurality of coolant supply passages 103b are formed at the side.

However, one coolant supply passage 103b may be formed, and the positions of the air supply passage 103a and the coolant supply passage 103b may be changed.

First, the air passing through the air supply passage 103a may be air for an air gap sensor (AIR for an air gap sensor), air for processing (cooling), or air for material chucking.

The air for the air gap sensor has a role of operating an air gap sensor (not shown) by using the pressure of air so as to check whether the material is completely adhered to the power chuck 102 when the material is chucked to the power chuck 102 do.

When the material is chucked to the power chuck 102, a preset pressure intensity is detected. If an air leak occurs in the contact area of the power chuck 102 and the workpiece, the pressure set on the air gap sensor is maintained Therefore, it is sensed that the material is not completely adhered to the power chuck 102.

Processing (cooling) air blows chips or cools the material during processing.

And the air for material chucking plays a role of blowing when the material is chucked.

Next, the coolant supply flow path 103b forms a line for supplying cooling (for cooling) coolant.

At this time, coolant for processing (cooling) blows chips or cools the material during processing.

In this embodiment, since the multiple utility supply flow paths 103a and 103b are applied, air or coolant may be selected and used alternately.

That is, the efficiency is improved because the air for the air gap sensor, the air for processing (for cooling), the material for chucking air, and the coolant for processing (cooling) can be used alternately as needed.

In the region of the hydraulic rotary cylinder 101, there are provided flange 140 and 141 for restricting the flow of the oil to support the multiple utility supply flow paths 103a and 103b.

The flow restricting flanges 140 and 141 serve to prevent the multiple utility supply flow paths 103a and 103b, that is, the air supply flow path 103a and the coolant supply flow path 103b from rotating.

A plurality of bearings B are interposed in the flow restricting flanges 140 and 141, and a bearing housing 150 is coupled to the outer side.

In the region of the power chuck 102, the rotary union shaft 120 and the rotary union housing 130 are disposed as shown in detail in Fig.

The rotary union shaft 120 is fixedly disposed in the region of the power chuck 102 and conveys any one of air and coolant, such as air. The first and second flow paths (L1 to L2) are formed in the interior of the rotary union shaft (120).

The rotary union housing 130 is disposed radially outward of the rotary union shaft 120. The rotary union housing 130 is rotated to deliver air and other utilities, such as coolant, in the coolant.

In the interior of the rotary union housing 130, there are formed third to fourth flow paths L3 to L4 selectively communicating with the first and second flow paths L1 to L2, respectively.

Between the rotary union shaft 120 and the rotary union housing 130, a plurality of grooves 135 are formed in which utilities are temporarily stored.

The grooves 135 are formed in particular between the first and second flow paths L1 to L2 and the third to fourth flow paths L3 to L4.

Even if the rotary union housing 130 rotates and is positioned at an arbitrary angle, the utilities transmitted along the first and second flow paths L1 to L2 at the rotary union shaft 120 are constantly latched in the grooves 135, And serves to enable the latent utilities to be discharged along the third to fourth flow paths L3 to L4.

A sealing O-ring (O / R) is interposed in the periphery of the grooves 135.

As described above, in the case of the present embodiment, since the hydraulic rotary cylinder 101 is applied with the multiple utility supply flow paths 103a and 103b between the power chucks 102, air or coolant can be selected and used alternately, It can also be used.

For example, it can provide many advantages because it can be used alternately as needed for air for an air gap sensor, air for processing (for cooling), material for chucking air, and coolant for cooling (for cooling).

As described above, according to the present embodiment, it is possible to select and use various types of utilities through a simple and efficient structure, or alternately use them when necessary, thereby improving the machining efficiency of the machine tool.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

L1 to L4: Flow O / R: O-ring
101: Hydraulic rotary cylinder 102: Power chuck
103a: Air supply passage 103b: Coolant supply passage
120: Rotary union shaft 130: Rotary union housing
140, 141: Flange for stopping the rotation of the oil passage 150: Bearing housing

Claims (5)

A power chuck 102 for chucking and rotating the workpiece;
A hydraulic rotary cylinder 101 spaced apart from the power chuck 102 and rotating the power chuck 102; And
(103a, 103b) connected to the hydraulic rotary cylinder (101) and the power chuck (102) by a plurality of lines so that the utility directed toward the power chuck (102) can be selected or alternatively used from air or coolant. ) Of the spindle assembly (10).
The method according to claim 1,
The multi-utility supply channels 103a and 103b are connected to the multi-
An air supply passage (103a) formed in a central region between the hydraulic rotary cylinder (101) and the power chuck (102) and through which the air flows; And
And a coolant supply passage (103b) disposed adjacent to the air supply passage (103a) and through which the coolant flows.
The method according to claim 1,
A rotary union shaft 120 fixedly disposed in the region of the power chuck 102 and transmitting any one of the air and the coolant and having first and second flow paths L1 to L2 formed therein; And
And a plurality of second circulation conduits disposed radially outward of the rotary union shaft 120 for transmitting the air and the other utilities of the coolant while being selectively in communication with the first and second flow paths L1 to L2, And a rotary union housing (130) in which the first to fourth flow paths (L3 to L4) are formed.
The method of claim 3,
Wherein a plurality of grooves (135) are formed between the rotary union shaft (120) and the rotary union housing (130) for temporarily storing the utility.
The method according to claim 1,
Wherein the hydraulic rotary cylinder region is further provided with flange (140, 141) for preventing rotation of the flow path by preventing the rotation of the flow path rotation stopping flanges (140, 141) by supporting the multiple utility supply flow paths (103a, 103b) Machine spindle assembly.
KR1020120150382A 2012-12-21 2012-12-21 Spindle assembly of machine tool KR102015661B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120150382A KR102015661B1 (en) 2012-12-21 2012-12-21 Spindle assembly of machine tool

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Application Number Priority Date Filing Date Title
KR1020120150382A KR102015661B1 (en) 2012-12-21 2012-12-21 Spindle assembly of machine tool

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KR20140083077A true KR20140083077A (en) 2014-07-04
KR102015661B1 KR102015661B1 (en) 2019-08-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06170604A (en) * 1992-12-09 1994-06-21 Murata Mach Ltd Spindle construction for lathe
KR20020037827A (en) 2000-11-15 2002-05-23 이계안 A control device of the variable nozzle turbine turbocharger system using a stepping motor and a control method thereof
KR20100050468A (en) * 2007-07-24 2010-05-13 닛본 세이고 가부시끼가이샤 Spindle device
KR20110042504A (en) * 2009-10-19 2011-04-27 임홍순 Multiple cutting lathe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06170604A (en) * 1992-12-09 1994-06-21 Murata Mach Ltd Spindle construction for lathe
KR20020037827A (en) 2000-11-15 2002-05-23 이계안 A control device of the variable nozzle turbine turbocharger system using a stepping motor and a control method thereof
KR20100050468A (en) * 2007-07-24 2010-05-13 닛본 세이고 가부시끼가이샤 Spindle device
KR20110042504A (en) * 2009-10-19 2011-04-27 임홍순 Multiple cutting lathe

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