WO2018174465A1

WO2018174465A1 - Bed of machine tool and bed assembly including same

Info

Publication number: WO2018174465A1
Application number: PCT/KR2018/003033
Authority: WO
Inventors: 권태형
Original assignee: 두산공작기계 주식회사
Priority date: 2017-03-21
Filing date: 2018-03-15
Publication date: 2018-09-27
Also published as: KR20180106693A; KR102324555B1

Abstract

The bed of a machine tool may include a body part and a guide part. The body part may accommodate a spindle. The guide part may extend from the body part. The guide part may guide chips and cutting oil to the bottom surface of the body part. Thus, the chips and the cutting oil may be efficiently guided to a chip conveyor.

Description

Bed of machine tool and bed assembly comprising same

The present invention relates to a bed of a machine tool and a bed assembly comprising the same, more particularly to a bed of a vertical lathe, and a bed assembly comprising such a bed.

In general, machine tools can be divided into turning centers and machining centers. The machining center can machine workpieces using rotating tools. On the other hand, the turning center can use a tool to machine the workpiece being rotated.

The turning center may comprise a spindle for rotating the workpiece and a bed for receiving the spindle. Chips and coolant generated during machining of the workpiece rotated by the spindle can be collected in the oil pan via the chip conveyor.

According to the related arts, the oil pan and chip conveyor can be provided separately on the outside of the bed. That is, the oil pan and the chip conveyor can be assembled on the outer surface of the bed. The chip conveyor disposed outside the bed cannot efficiently discharge chips and cutting oil generated inside the bed. In particular, it may not be easy to remove chips and cutting oil loaded on the horizontal portion of the oil pan. In addition, the cutting oil may leak due to the aging of the oil pan assembled to the bed. In particular, cutting oil may leak from the chip conveyor disposed outside the bed.

In addition, the lubricating oil for lubricating the spindle can be mixed with the cutting oil, so that the lubricating oil cannot be used again.

The present invention provides a bed of machine tools capable of effectively discharging chips and cutting oil, preventing leakage of cutting oil and reusing lubricant.

The present invention also provides a bed assembly comprising the bed described above.

The bed of a machine tool according to one aspect of the present invention may include a body portion and a guide portion. The body portion can receive a spindle. The guide portion may extend from the body portion to guide chips and cutting oil to the bottom surface of the body portion.

In example embodiments, the guide part may have at least one inclined surface for guiding the chip and the cutting oil to the bottom surface of the body part.

In example embodiments, the inclined surface may include first and second side inclined surfaces disposed on both sides of the spindle, and a central inclined surface disposed between the first and second side inclined surfaces.

In example embodiments, the central inclined surface may be formed as a pair inclined toward the first and second side inclined surfaces, respectively.

In example embodiments, the bed may further include a storage unit formed under the central inclined surface to store lubricating oil for lubricating the spindle.

In example embodiments, the bed may further include a receiving portion formed on the body portion to receive the spindle and to prevent the cutting oil from penetrating into the spindle.

A bed assembly of a machine tool according to another aspect of the invention may comprise a bed and at least one chip conveyor. The bed may include a body portion accommodating a spindle, and a guide portion extending from the body portion to guide chips and cutting oil to the chip conveyor. The chip conveyor may be disposed inside the bed to discharge the chip and the cutting oil.

In example embodiments, the chip conveyor may be formed in a pair extending from both sides of the spindle.

In example embodiments, the bed assembly may further include at least one chip chute disposed under the inclined surface to transfer the chips and the cutting oil to the chip conveyor.

In example embodiments, the bed assembly may further include a coolant nozzle disposed on the body to spray coolant to the inclined surface to remove the chip remaining on the inclined surface.

In example embodiments, the machine tool may comprise a vertical lathe.

According to the present invention described above, the guide portion for collecting chips and cutting oil may be integrally formed in the bed. In particular, since the guide portion has at least one inclined surface for guiding the chip and the cutting oil downward, the chip and the cutting oil can be efficiently guided to the chip conveyor. In addition, the penetration of the cutting oil into the spindle by the receiving portion accommodating the spindle can be prevented, so that the lubricant lubricating the spindle can be prevented from being contaminated by the cutting oil. In addition, since the chip conveyor is disposed inside the bed, it is possible to prevent the cutting oil from leaking.

1 is a perspective view showing a bed assembly of a machine tool according to an embodiment of the present invention.

2 is a perspective view showing the internal structure of the bed assembly shown in FIG.

3 is a plan view of the bed assembly shown in FIG.

4 is a cross-sectional view taken along line IV-IV 'of FIG. 3.

FIG. 5 is a cross-sectional view taken along the line VV ′ of FIG. 3.

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

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is a perspective view showing a bed assembly of a machine tool according to an embodiment of the present invention, Figure 2 is a perspective view showing the internal structure of the bed assembly shown in Figure 1, Figure 3 shows the bed assembly shown in Figure 2 4 is a cross-sectional view taken along line IV-IV 'of FIG. 3, and FIG. 5 is a cross-sectional view taken along line VV ′ of FIG. 3.

1 to 5, the bed assembly of the machine tool according to the present embodiment includes a bed 110, first and

second chip chutes

150 and 152 and first and second chip conveyors 140 and 142. ) May be included.

In this embodiment, the machine tool may comprise a turning center. For example, the turning center may comprise a vertical lathe. Thus, the workpiece W can be rotated about the vertical axis by the spindle S. The spindle S may be mounted on the table T. However, the bed assembly of this embodiment can also be applied to other kinds of machine tools.

The bed 110 may accommodate a table T and a spindle S. In addition, the bed 110 may collect chips and cutting oil generated during workpiece processing. That is, the bed 110 of the present embodiment may have a function of an oil pan. The bed 110 may include a body 120 and a guide 130.

Body portion 120 may include a receiving portion 122 surrounding the outer peripheral surface of the table (T) and the spindle (S). The receiving part 122 may be disposed at the central portion of the body part 120. The receiving part 122 may have a shape spaced apart from the outer circumferential surface of the spindle S at regular intervals. For example, the receptacle 122 may have a substantially ring shape.

Since the receiving portion 122 surrounds the spindle S, chips and cutting oil cannot penetrate into the spindle S. That is, the receiving portion 122 can prevent the movement of the chip and the cutting oil into the spindle (S). Therefore, the lubricating oil supplied into the receiving portion 122 to lubricate the spindle S can be prevented from mixing with the cutting oil. As a result, the lubricating oil not contaminated by the cutting oil can be recovered again, and the lubricating oil can be reused for the purpose of lubricating the spindle S.

The guide part 130 may extend from both sides of the spindle S from the body part 120. That is, the guide part 130 may be integrally formed with the body part 120. The guide unit 130 may guide the chip and the cutting oil generated during the workpiece processing to the bottom surface of the bed 110.

In order to guide the chip and the coolant efficiently, the guide 130 may include a first side inclined surface 132, a second side inclined surface 134, and first and second central

inclined surfaces

136 and 138.

The first side inclined surface 132 may be disposed on the left side of the spindle (S). The first side inclined surface 132 may have a shape inclined toward the spindle S. Accordingly, the chip and the cutting oil dropped on the first side inclined surface 132 may be guided to the left bottom surface of the bed 110 along the first side inclined surface 132.

The first chip chute 150 may be disposed on a bottom left side of the bed 110. The first chip chute 150 may be extended toward the rear surface of the bed 110 in a horizontal direction from the left side of the spindle (S). The first chip chute 150 may move the chip and the cutting oil guided by the first side inclined surface 132 to the rear surface of the bed 110.

The first chip conveyor 140 may be connected to the rear end of the first chip chute 150. The first chip conveyor 140 may be disposed in the bed 110. The chips and cutting oil transferred by the first chip chute 150 may be discharged to the outside of the bed 110 by the first chip conveyor 140. Since the first chip conveyor 140 is disposed inside the bed 110, cutting oil leakage may be prevented.

The second side inclined surface 134 may be disposed on the right side of the spindle S. The second side inclined surface 134 may have a shape inclined toward the spindle S. Therefore, the chip and the cutting oil dropped on the second side inclined surface 134 of this shape may be guided to the right bottom surface of the bed 110 along the second side inclined surface 134.

The second chip chute 152 may be disposed on the bottom right side of the bed 110. The second chip chute 152 may extend long toward the rear surface of the bed 110 in a horizontal direction from the right side of the spindle S. The second chip chute 152 may move the chip and the cutting oil guided by the second side inclined surface 134 to the rear surface of the bed 110.

The second chip conveyor 142 may be connected to the rear end of the second chip chute 152. The second chip conveyor 142 may be disposed inside the bed 110. The chips and cutting oil transferred by the second chip chute 152 may be discharged to the outside of the bed 110 by the second chip conveyor 142. Since the second chip conveyor 142 is disposed inside the bed 110, leakage of cutting oil may be prevented.

The first and second central

inclined surfaces

136 and 138 may be disposed between the first side inclined surface 132 and the second side inclined surface 134. The first and second central

inclined surfaces

136 and 138 may be disposed at the rear of the spindle S.

The first central inclined surface 136 may have a shape inclined from the central portion of the bed 110 toward the first side inclined surface 132. The chip and the cutting oil dropped on the first central inclined surface 136 may be moved to the first chip chute 150 along the first central inclined surface 136. The first chip chute 150 may transfer the chips and the cutting oil guided by the first central inclined surface 136 to the first chip conveyor 140.

The second central inclined surface 138 may have a shape inclined from the central portion of the bed 110 toward the second side inclined surface 134. The chip and the cutting oil dropped on the second central inclined surface 138 may be moved to the second chip chute 152 along the second central inclined surface 138. The second chip chute 152 may transfer the chips and the cutting oil guided by the second central inclined surface 138 to the second chip conveyor 142.

The first central inclined surface 136 and the second central inclined surface 138 may share an upper end. Therefore, the sum of the first center inclined surface 136 and the second center inclined surface 138 may have a substantially triangular cross-sectional shape.

In addition, central inclined surfaces having substantially the same shape as the first and second central

inclined surfaces

136 and 138 may also be disposed in front of the spindle S. FIG.

In order to remove chips remaining on the first and second central

inclined surfaces

136 and 138, a coolant nozzle 160 may be disposed in the body 120. The coolant nozzle 160 injects the coolant to the first and second central

inclined surfaces

136 and 138 to remove chips remaining on the first and second central

inclined surfaces

136 and 138. 2 chip chute (150, 152) can be moved. The coolant nozzle 160 may be positioned at a portion of the body 120 which is an upper portion of the upper ends of the first and second central

inclined surfaces

136 and 138. The coolant nozzle 160 may receive a coolant from the cleat block 162.

Additionally, coolant nozzle 160 is also disposed on top of the first and second side slopes 132, 134 to cool the chips remaining on the first and second side slopes 132, 134. It can also be removed using.

The bed 110 may further include a storage unit 124. The storage unit 124 may be formed under the first and second central

inclined surfaces

136 and 138. That is, the inner space of the first and second central

inclined surfaces

136 and 138 having a triangular shape may correspond to the storage unit 124. Lubricating oil supplied to the bearing (B) for supporting the rotational movement of the spindle (S) may be accommodated in the storage unit 124 riding the central inner wall of the bed (110). Lubricant contained in the reservoir 124 may be recovered to the tank.

As described above, since the cutting oil is blocked by the receiving portion 122 and cannot penetrate into the spindle S, the lubricant may be prevented from being contaminated by the cutting oil. Therefore, the lubricating oil recovered to the tank can be used again for the spindle (S) lubrication.

As described above, according to the present embodiments, a guide part for collecting chips and cutting oil may be integrally formed in the bed. In particular, since the guide portion has at least one inclined surface for guiding the chip and the cutting oil downward, the chip and the cutting oil can be efficiently guided to the chip conveyor. In addition, the penetration of the cutting oil into the spindle by the receiving portion accommodating the spindle can be prevented, so that the lubricant lubricating the spindle can be prevented from being contaminated by the cutting oil. In addition, since the chip conveyor is disposed inside the bed, it is possible to prevent the cutting oil from leaking.

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art will be variously modified without departing from the spirit and scope of the invention described in the claims below. And can be changed.

110; Bed 120; Body

122; Receptacle 124; Storage

130; Guide 132; First side slope

134; Second side slope 136; First center slope

138; Second central inclined plane 140; 1st chip conveyor

142; Second chip conveyor 150; 1st chip chute

152; Second chip chute 160; Coolant nozzle

162; Coolant block

Claims

A body portion accommodating the spindle; And

And a guide portion extending from the body portion and guiding chips and cutting oil to the bottom surface of the body portion.
The bed of claim 1, wherein the guide portion has at least one inclined surface for guiding the chip and the cutting oil to the bottom surface of the body portion.
The method of claim 2, wherein the inclined surface is

First and second side inclined surfaces disposed on both sides of the spindle; And

And a central inclined surface disposed between said first and second side inclined surfaces.
4. The bed of claim 3, wherein the central inclined surface comprises a pair of inclined surfaces respectively toward the first and second side inclined surfaces.
4. The bed of a machine tool according to claim 3, further comprising a storage portion formed under the central inclined surface to store lubricating oil for lubricating the spindle.
2. The bed of claim 1, further comprising a receiving portion formed on the body portion to receive the spindle and to prevent the cutting oil from penetrating into the spindle.
A bed including a body portion accommodating a spindle, and a guide portion extending from the body portion and guiding chips and cutting oil to the bottom surface of the body portion;

A bed assembly of a machine tool disposed inside the bed, the at least one chip conveyor for discharging the chip and the cutting oil.
8. The bed assembly of claim 7, wherein the guide portion has at least one inclined surface for guiding the chip and the cutting oil to the bottom of the body portion.
8. The bed assembly of claim 7, wherein the bed further includes a receptacle formed on the body to receive the spindle and to prevent the coolant from penetrating into the spindle.
8. The bed assembly of claim 7, wherein the chip conveyor consists of a pair extending from both sides of the spindle.
8. The bed assembly of claim 7, further comprising at least one chip chute disposed below the inclined surface and transferring the chip and the cutting oil to the chip conveyor.
8. The bed assembly of claim 7, further comprising a coolant nozzle disposed in the body portion for injecting coolant onto the inclined surface to remove the chip remaining on the inclined surface.
8. The bed assembly of claim 7, wherein the machine tool comprises a vertical lathe.