KR101803145B1 - Machine tool - Google Patents

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Publication number
KR101803145B1
KR101803145B1 KR1020150113617A KR20150113617A KR101803145B1 KR 101803145 B1 KR101803145 B1 KR 101803145B1 KR 1020150113617 A KR1020150113617 A KR 1020150113617A KR 20150113617 A KR20150113617 A KR 20150113617A KR 101803145 B1 KR101803145 B1 KR 101803145B1
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KR
South Korea
Prior art keywords
fastening
hole
holder
fastening portion
slot
Prior art date
Application number
KR1020150113617A
Other languages
Korean (ko)
Other versions
KR20170019602A (en
Inventor
고영대
Original Assignee
현대위아 주식회사
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Priority to KR1020150113617A priority Critical patent/KR101803145B1/en
Publication of KR20170019602A publication Critical patent/KR20170019602A/en
Application granted granted Critical
Publication of KR101803145B1 publication Critical patent/KR101803145B1/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
    • B23Q1/03—Stationary 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
    • 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
    • B23Q2701/00—Members which are comprised in the general build-up of a form of the machine
    • B23Q2701/02—Movable or adjustable work or tool supports for milling machines, their drive, control or guiding

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

The present invention relates to a machine tool, and more particularly, to a machine tool having a table formed with slots in a longitudinal direction thereof; A holder disposed on the table so as to be movable in a longitudinal direction of the table and having a fastening hole formed in the slot direction; A fastening member including a first fastening portion movably disposed in the slot and a second fastening portion passing through the holder and fastened to the first fastening portion; And a fixing member having one end supported by the first coupling portion and the other end supported by the holder. Thus, the first fastening portion is prevented from being detached from the slot, and the assembling line of the first fastening portion and the fastening hole and the second fastening portion are made to coincide with each other, so that the assembly of the table and the holder can be easily realized .

Description

Machine tool {MACHINE TOOL}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a machine tool, and more particularly, to a machine tool improved in the fastening structure of a holder and a table.

A machine tool is a machine that is used for machining metal or nonmetal materials (hereinafter referred to as "base material") into shapes and dimensions by using various cutting or non-cutting machining methods, or for adding more precise machining.

The machine tool typically comprises a table for the work to be performed and a holder arranged on the table for engaging the tool.

However, because the table and the holder are mechanically coupled, there is a gap between the two, which requires time for alignment during the setup process, which is time consuming. Further, when the work is performed after the set-up, the fastening force between the two is weakened, and the tool is shaken.

FIG. 1 is an exploded perspective view illustrating a fastening structure of a table and a holder of a conventional machine tool, and FIG. 2 is a cross-sectional view of a fastened table and a holder of FIG.

1 and 2, the table 11 and the holder 12 of the conventional lathe 10 for a machine tool have a shape corresponding to the slot 11a of the table 11 in order to solve the above- A nut 13 and a bolt 14 penetrating the holder 12 and fastened to the nut 13.

However, when the table 11 and the holder 12 of the conventional lathe 10 for a machine tool are fastened, the nut 13 is disengaged from the slot 11a or moved, and the assembly time is delayed.

In order to assemble the bolt 14 to the nut 13 through the holder 12 with the nut 12 disposed on the nut 11 disposed in the slot 11a, The through holes of the holder 12 and the imaginary fastening lines 1 of the bolts 14 must be aligned with each other so that the assembly time or the replacement time of the holder 12 may be delayed.

It is an object of the present invention to provide a machine tool capable of shortening assembly or replacement time when fastening or replacing a table and a holder of a machine tool.

It is still another object of the present invention to provide a machine tool capable of further improving the fastening force between a table and a holder of a machine tool to improve machining reliability and durability of the machine tool.

In order to achieve the above-mentioned object, the present invention provides a table having a slot formed in a longitudinal direction thereof; A holder disposed on the table so as to be movable in a longitudinal direction of the table and having a fastening hole formed in the slot direction; A fastening member including a first fastening portion movably disposed in the slot and a second fastening portion passing through the holder and fastened to the first fastening portion; And a fixing member having one end supported by the first coupling portion and the other end supported by the holder.

Wherein the slot is formed in a T-shape having an inner volume larger than a volume of the opening, the first fastening portion is formed of a nut inserted into the slot and not separated from the opening of the slot, And may be formed as a bolt threadably engaged with the first fastening portion.

The fixing member may have one end portion of the fixing member disposed between the first fastening portion and the second fastening portion, and the other end of the fixing member may be disposed between the fastening hole and the second fastening portion.

The first fastening portion may include: a first hole formed with a predetermined inner diameter; And a second hole communicating with the first hole and having an inner diameter smaller than an inner diameter of the first hole and having a thread formed to be engaged with the second coupling part, A first fastening hole formed to have a diameter that does not allow the head portion of the portion to pass therethrough; And a second fastening hole having a diameter at which the head portion of the second fastening portion can be moved, wherein one end of the fastening member is supported by the first hole, and the other end of the fastening portion And the elastic member is supported by the second fastening hole and the central side of the fastening portion is penetrated by the second fastening portion.

The fixing member may be formed of a coil spring.

The first hole, the second fastening hole, and the fastening member may be formed such that an inner circumferential surface of the fastening member is spaced apart from the second fastening portion.

Wherein a first thread portion is formed on the inner circumferential surface of the first hole so as to be engraved on the inner circumferential surface of the first hole and into which the outer circumferential portion of one end of the fixing member is inserted, and an inner circumferential surface of the second fastening hole And a second slider portion formed to be engraved on the inner circumferential surface and inserted into the outer peripheral portion of the other end of the fixing member.

The first and second slidings may be formed in a threaded shape.

The fixing member may be formed of an elastic member that presses the first fastening portion toward the holder.

When the first fastening portion, the fixing member, and the holder are separated from the table, the gap between the first fastening portion and the holder may be smaller than the thickness of the opening portion of the slot.

The present invention can prevent the first fastening portion disposed in the slot of the table from being separated from the slot by including a fixing member whose one end is supported by the first fastening portion and the other end is supported by the holder, And the assembly line of the first and second fastening portions can be easily matched with each other, so that the assembly of the table and the holder of the lathe for machine tool can be easily realized.

Further, the fixing member is formed of an elastic member that presses the first fastening portion toward the holder side, so that the table and the holder are further brought into close contact with each other by the returning force of the fixing member, so that a more firm fastening force can be achieved.

1 is an exploded perspective view illustrating a fastening structure of a table and a holder of a conventional machine tool,
FIG. 2 is a cross-sectional view of the holder of FIG.
3 is a cross-sectional view of a table, a holder, a fastening member and a fastening member of a machine tool according to an embodiment of the present invention,
Fig. 4 is a cross-sectional view showing a first fastening part and a part of a fixing member in the machine tool of Fig. 3,
Fig. 5 is a sectional view showing a part of the holder, the second fastening portion and the fixing member in the machine tool of Fig. 3; Fig.

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

Unless defined otherwise, all terms used herein are the same as the generic meanings of the terms understood by those of ordinary skill in the art, and where the terms used herein contradict the general meaning of the term, they follow the definitions used herein.

It is to be understood, however, that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

FIG. 3 is a sectional view showing a state where a holder, a fastening member and a fixing member of a machine tool according to an embodiment of the present invention are separated from a table. FIG. 4 is a cross- Fig. 5 is a cross-sectional view showing a part of the holder, the second fastening portion and the fixing member in the machine tool of Fig. 3; Fig.

3 to 5, a lathe 100 for a machine tool according to an embodiment of the present invention may include a table 110, a holder 120, a fastening member 130, and a fastening member 140 .

Specifically, the table 110 may include a holder 120 or other components of a machine tool, and a slot 111 may be formed in the longitudinal direction.

The slots 111 are formed on the upper surface of the table 110, and at least two or more of the slots 111 may be formed parallel to each other on the table 110 as shown in FIG.

The slot 111 is formed in a T shape having an inner volume larger than the volume of the opening so that a first coupling part 131 to be described later is slid inside the slot 111, So that it can be formed not to fall outside.

The holder 120 may be disposed on the table 110 so as to be movable in the longitudinal direction of the table 110.

The holder 120 may have a fastening hole 121 formed in the direction of the slot 111 and may be fastened to the table 110 by engagement of a fastening member 130 to be described later.

Such a holder 120 may be provided with a tool for machining the unshown parent material, and the embodiment can easily perform replacement of the holder 120 disposed on the table 110 for such tool change, More rigid fastening can be achieved when the holder 120 is fastened to the table 110.

The fastening hole 121 includes a first fastening hole 121a which is opposed to the opening of the slot 111 and which has a diameter not passing through the head part of the second fastening part 132, A second fastening hole 121 formed at the opposite side of the slot 111 with respect to the hole 121a and having a diameter communicating with the first fastening hole 121a and capable of moving the head portion of the second fastening portion 132, (121b).

Therefore, when the second fastening part 132 to be described later is a bolt, the threaded part of the bolt can be inserted into the first fastening hole 121a through the second fastening hole 121b, The portion 132 can be fastened to the first fastening portion 131 to be described later.

The fastening member 130 includes a first fastening part 131 movably disposed in the slot 111 and a second fastening part 131 fastened to the first fastening part 131 through the holder 120. [ (132).

Specifically, the first fastening part 131 is formed in a shape corresponding to the shape of the slot 111, that is, inserted into the slot 111 and not separated from the opening of the slot 111 And the second fastening part 132 may be a bolt threadably engaged with the first fastening part 131. [

 Here, when the holder 120 is fastened to the table 110 only with the first fastening part 131 and the second fastening part 132, the first fastening part 131 is inserted into the slot 111 The fastening can not be achieved easily.

Therefore, the embodiment includes a fixing member 140, one end of which is supported by the first coupling part 131 and the other end is supported by the holder 120, The holder 110 is prevented from being detached from the slot 111 and the movement of the second coupling part 132 is guided to the first coupling part 131, So that easy fastening can be achieved.

More specifically, the fixing member 140 has one end portion disposed between the first fastening portion 131 and the second fastening portion 132 and the other end positioned between the fastening hole 121 and the second fastening portion 132 As shown in FIG.

That is, the first coupling part 131 includes a first hole 131a formed with a predetermined inner diameter and a second hole 131a communicating with the first hole 131a and having an inner diameter smaller than the inner diameter of the first hole 131a And a second hole 131b formed with a thread to be engaged with the second fastening part 132. [

One end of the fixing member 140 is inserted into the first hole 131a and the other end of the fixing member 140 is inserted into the second fastening hole 121b. And the center of the fixing member 140 may be formed of an elastic member penetrating by the second fastening part 132. [

Although the fixing member 140 may be formed of, for example, a cylindrical rubber, the fixing member 140 may be formed as a coil spring in the case of the present embodiment in consideration of the elastic modulus and the deformation amount.

Here, the first hole 131a, the second fastening hole 121b and the fastening member 140 may be fixed to the fastening member 140 so that the fastening member 140 does not interfere with the second fastening portion 132 May be formed so as to be spaced apart from the second fastening portion 132.

That is, the fixing member 140 is formed such that the inner diameter of the fixing member 140 is larger than the outer diameter of the threaded portion of the second coupling portion 132, and the inner diameter of the first hole 131a is larger than the inner diameter of the fixing member 140. [ And the inner diameter of the second fastening hole 121b may be substantially equal to the outer diameter of the fixing member 140. [

The second hole 131b is formed at a level substantially equal to the outer diameter of the threaded portion of the second coupling portion 132 so as to be coupled with the threaded portion of the second coupling portion 132, A stepped portion 131c is present between the first hole 131a and the second hole 131b and one end of the fixing member 140 can be seated on the stepped portion 131c.

On the inner circumferential surface of the first hole 131a is formed a depressed portion on the inner circumferential surface of the first hole 131a so that the fixing member 140 is firmly fastened to the first coupling portion 131, A first threaded portion into which the outer peripheral portion of the outer circumferential portion 140 is inserted may be formed.

Similarly, an inner circumferential surface of the second fastening hole 121b is formed to be engraved on the inner circumferential surface of the second fastening hole 121b so that the fastening member 140 is tightly fastened to the holder 120, 140 may be inserted into the second slider portion.

The first and second slider portions are rotated when the fixing member 140 formed of a coil spring is inserted into the first hole 131a and the second coupling hole 121b, And may be formed in a threaded shape so as to be easily inserted into the first slid part and the second slid part.

The fixing member 140 inserted into the first and second slid portions may be engaged with the first and second slid portions to form the first coupling portion 131 and the holder 120, respectively.

The first coupling part 131, the fixing member 140 and the holder 120 are coupled to each other through the first coupling part 131 and the holder 120 through a returning force (elastic restoring force) (120) may be formed so as to be pressed against the opening of the slot (111) on the opposite side with respect to the opening of the slot (111). That is, the fixing member 140 may be formed to press the first fastening part 131 toward the holder 120 side. When the first fastening part 131, the fixing member 140 and the holder 120 are separated from the table 110, the distance between the first fastening part 131 and the holder 120 May be smaller than the thickness of the opening of the slot. When the first fastening part 131, the fixing member 140 and the holder 120 are separated from the table 110, the first fastening part 131 may be inserted into the holder 120 And can be formed in close contact with each other. The first fastening portion 131, the fastening member 140 and the holder 120 having such a configuration are arranged such that the fastening member 140 is stretched so that the gap between the first fastening portion 131 and the holder 120 The first engaging portion 131 is inserted into the slot 111 while the fixing member 140 is partly restored and the first engaging portion 131 is inserted into the slot 111, 131 and the holder 120 are in close contact with the opening of the slot 111 and the second coupling part 132 passes through the coupling hole 121 and the inner peripheral part of the fixing member 140, And can be coupled to the table 110 by being fastened to the first fastening part 131. At this time, the holder 120 is fastened to the table 110 by the second fastening part 132, but may be more firmly fastened to the table 110 by the returning force of the fastening member 140 .

The first fastening part 131 and the second fastening part 132 may be fixed to the holder 120 by fixing the first fastening part 131 to the holder 120 side, The first fastening portion 131 can be prevented from being released from the second fastening portion 132 by the returning force of the member 140. [

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 as defined by the appended claims. Range and its equivalent range.

100: Machine tool shelf 110: Table
111: Slot 120: Holder
121: fastening hole 121a: fastening hole
121b: second fastening hole 130: fastening member
131: first fastening part 131a: first hole
131b: second hole 131c: stepped portion
132: second fastening part 140: fastening member

Claims (10)

A table in which a slot is formed in the longitudinal direction;
A holder disposed on the table so as to be movable in a longitudinal direction of the table and having a fastening hole formed in the slot direction;
A fastening member including a first fastening portion movably disposed in the slot and a second fastening portion passing through the holder and fastened to the first fastening portion; And
And a fixing member having one end supported by the first coupling portion and the other end supported by the holder,
Wherein the slot has a T-shaped inner volume larger than the volume of the opening,
Wherein the first fastening portion is formed of a nut inserted into the slot and not separated from the opening of the slot,
The second fastening portion is formed as a bolt threadably engaged with the first fastening portion,
Wherein one end of the fixing member is disposed between the first fastening portion and the second fastening portion and the other end of the fastening member is disposed between the fastening hole and the second fastening portion.
delete delete The method according to claim 1,
The first fastening portion
A first hole formed with a predetermined inner diameter; And
And a second hole communicating with the first hole and having an inner diameter smaller than an inner diameter of the first hole and having a thread to be engaged with the second coupling part,
The fastening hole
A first fastening hole having a diameter not allowing the head portion of the second fastening portion to pass therethrough; And
And a second fastening hole having a diameter allowing the head portion of the second fastening portion to move,
Wherein the fixing member has one end of the fixing member supported by the first hole and the other end of the fixing portion is supported by the second fastening hole and the center of the fastening portion is pierced by the second fastening portion A machine tool formed of an elastic member.
5. The method of claim 4,
Wherein the fixing member is formed of a coil spring.
6. The method of claim 5,
Wherein the first hole, the second fastening hole, and the fastening member are formed so that an inner circumferential surface of the fastening member is spaced apart from the second fastening portion.
6. The method of claim 5,
A first thread portion is formed on an inner circumferential surface of the first hole to be engraved on an inner circumferential surface of the first hole and in which an outer circumferential portion of one end of the fixing member is inserted,
Wherein a second slid portion is formed on the inner circumferential surface of the second fastening hole so as to engrave the inner circumferential surface of the second fastening hole and into which the outer circumferential portion of the other end of the fastening member is inserted.
8. The method of claim 7,
Wherein the first and second threaded portions are each formed in a threaded shape.
The method according to claim 1,
And the fixing member is formed of an elastic member that presses the first fastening portion toward the holder.
10. The method of claim 9,
Wherein when the first fastening portion, the fixing member, and the holder are separated from the table, an interval between the first fastening portion and the holder is formed to be smaller than a thickness of the opening portion of the slot.
KR1020150113617A 2015-08-12 2015-08-12 Machine tool KR101803145B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150113617A KR101803145B1 (en) 2015-08-12 2015-08-12 Machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150113617A KR101803145B1 (en) 2015-08-12 2015-08-12 Machine tool

Publications (2)

Publication Number Publication Date
KR20170019602A KR20170019602A (en) 2017-02-22
KR101803145B1 true KR101803145B1 (en) 2017-11-29

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Family Applications (1)

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KR1020150113617A KR101803145B1 (en) 2015-08-12 2015-08-12 Machine tool

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