KR102507990B1 - Turret of an machining tool - Google Patents

Abstract

The turret of the machine tool may include a turret body, a plurality of first tool clampers, and a plurality of second tool clampers. The first tool clampers may be disposed on a first circumferential line of the turret body. The second tool clampers may be disposed on portions of the turret body between the first tool clampers. Accordingly, the turret can clamp more tools corresponding to the number of second tool clampers without interference between the tools. As a result, the tool replacement cycle can be extended, and the operating efficiency of the machine tool can be improved.

Description

Turret of machine tool {TURRET OF AN MACHINING TOOL}

The present invention relates to a turret of a machine tool, and more particularly to a turret for clamping a plurality of tools in a turning center.

Generally, machine tools can be divided into turning centers and machining centers. Machining centers can process materials using rotating tools. On the other hand, a turning center can process a rotating material using a tool.

According to related technologies, the turret may have a plurality of clamping holes. The clamping holes may be arranged at equal intervals along the circumferential direction of the turret. A plurality of tools can be clamped in the clamping holes.

However, there may be limitations in reducing the spacing of clamping holes due to avoiding interference between tools. Therefore, it may not be possible to mount various tools for imparting various shapes to the workpiece in the clamping holes. Due to this, there may be inconvenience in having to stop the operation of the machine tool, separate existing tools from the clamping holes, and then mount new tools into the clamping holes. As a result, a problem of increasing material processing time may occur.

The present invention provides a turret for a machine tool capable of improving operation efficiency of a machine tool by extending a tool replacement cycle.

A turret of a machine tool according to one aspect of the present invention may include a turret body, a plurality of first tool clampers, and a plurality of second tool clampers. The first tool clampers may be disposed on a first circumferential line of the turret body. The second tool clampers may be disposed on portions of the turret body between the first tool clampers.

In example embodiments, the second tool clampers may be disposed on at least one second circumferential line different from the first circumferential line.

In example embodiments, a distance from the second circumferential line to the center of the turret body may be longer than a distance from the first circumferential line to the center of the turret body.

In example embodiments, the first tool clampers may be arranged at equal intervals. The second tool clampers may be arranged at equal intervals.

In example embodiments, intervals between the first tool clampers and the second tool clampers may be the same.

In example embodiments, the first tool clampers may clamp first tools. The second tool clampers may clamp second tools different from the first tools.

In example embodiments, the first tool clampers may include clamping holes formed on the front surface of the turret body along an axial direction of the turret body to accommodate tools.

In example embodiments, the first tool clampers may further include covers blocking entrances of the clamping holes.

In example embodiments, the second tool clampers may include clamping blocks disposed on the turret body along a radial direction of the turret body to clamp tools.

In example embodiments, each of the clamping blocks may have a clamping surface positioned on the second circumferential line to clamp the tools.

In example embodiments, a clamping groove for clamping the tool may be formed on the clamping surface.

In example embodiments, the turret may further include a third tool clamper mounted on at least one of the second clampers.

In example embodiments, the third tool clamper may include a clamping bracket having a clamping hole accommodating a tool.

In example embodiments, the third tool clamper may further include a cover blocking an inlet of the clamping hole.

In exemplary embodiments, the third clamper may clamp a third tool different from tools clamped by the first and second clampers.

In example embodiments, the turret may further include a rotation unit configured to rotate the turret body by an angle between the first clampers and the second clampers.

In example embodiments, the rotation unit may include a servo motor and a curvic coupling. The curvic coupling transmits the rotational force of the servo motor to the turret body, so that the first tool clampers and the second tool clampers can be selectively disposed at material processing positions.

In example embodiments, the curvic coupling may have a dimension twice the sum of the number of the first tool clampers and the number of the second tool clampers.

A turret of a machine tool according to another aspect of the present invention may include a turret body, a plurality of first tool clampers, a plurality of second tool clampers, and at least one third tool clamper. The first tool clampers may be disposed on a first circumferential line of the turret body. The second tool clampers may be disposed on a second circumferential line of the turret body outside the first circumferential line. The second tool clampers may be interposed between the first tool clampers. The third tool clamper may be mounted on at least one of the second clampers.

In example embodiments, intervals between the first tool clampers and the second tool clampers may be the same.

In example embodiments, the first tool clampers may clamp first tools. The second tool clampers may clamp second tools different from the first tools. The third tool clamper may clamp a third tool different from the first and second tools.

In example embodiments, the first tool clampers may include tool clamping holes formed on the front surface of the turret body along an axial direction of the turret body to accommodate tools. The second tool clampers may include clamping blocks disposed on the turret body along a radial direction of the turret body to clamp tools. The third tool clamper may include a clamping bracket having a clamping hole accommodating a tool.

In example embodiments, the turret may further include a servo motor and a curvic coupling. The curvic coupling transmits the rotational force of the servo motor to the turret body, so that the first tool clampers and the second tool clampers can be selectively disposed at material processing positions.

In example embodiments, the curvic coupling may have a dimension twice the sum of the number of the first tool clampers and the number of the second tool clampers.

According to the present invention described above, since the second tool clampers are disposed between the first tool clampers, the turret can clamp more tools corresponding to the number of second tool clampers without interference between tools. Accordingly, various shapes can be imparted to the material without a tool change operation. As a result, the tool replacement cycle can be extended, and the operating efficiency of the machine tool can be improved.

1 is a front view showing a turret of a machine tool according to an embodiment of the present invention.
2 is a cross-sectional view showing a rotation unit of the turret shown in FIG. 1;
3 and 4 are perspective views illustrating the rotating unit shown in FIG. 2 .
5 is a front view showing a state in which first to third tools are clamped in the turret shown in FIG. 1;
6 is a perspective view showing the turret shown in FIG. 5;
FIG. 7 is a cross-sectional view taken along line VII-VII' of FIG. 5 .
FIG. 8 is a cross-sectional view showing a state in which the first tool is separated from the first tool clamper shown in FIG. 7 .
FIG. 9 is a cross-sectional view taken along line IX-IX' of FIG. 5 .
FIG. 10 is a cross-sectional view showing a state in which a third tool is separated from the third tool clamper shown in FIG. 9 .
11 is a perspective view illustrating processing of a material using a second tool clamped to a second tool clamper.
12 is a perspective view illustrating processing of a material using a third tool clamped in a third tool clamper.
13 is a perspective view illustrating processing of a material using a first tool clamped in a first tool clamper.

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

Since the present invention may have various changes and various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, it should be understood that this is not intended to limit the present invention to the specific disclosed form, and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure.

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

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or 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 to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a front view showing a turret of a machine tool according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a rotating unit of the turret shown in FIG. 1, and FIGS. 3 and 4 are a rotating unit shown in FIG. These are the perspective views shown.

1 to 4, the turret of the machine tool according to the present embodiment includes a turret body 110, a plurality of first tool clampers 120, a plurality of second tool clampers 130, and a rotation unit. can include

The turret body 110 may have a substantially ring shape. Accordingly, the turret body 110 may have a front surface 112 and a rear surface facing the axial direction of the turret body 110, and an outer circumferential surface 114 facing the radial direction of the turret body 110.

The first tool clampers 120 may be provided on the turret body 110 . The first tool clampers 120 may clamp the first tools. The first tool clampers 120 may be positioned on the first circumferential line of the turret body 110 . The first circumferential line may be spaced apart from the center of the turret body 110 by a first radius.

The first tool clampers 120 may include clamping holes. The clamping holes may be formed along the axial direction on the front surface 112 of the turret body 110 . As shown in FIG. 7 , first tools T1 may be inserted into the clamping holes. The first tools T1 inserted into the clamping holes may be fixed with bolts 126 . For example, the first tool T1 may include a boring tool for processing the inner diameter of a material. As shown in FIG. 8 , when the first tool T1 is separated from the clamping hole, the cover 124 may block the entrance of the clamping hole to prevent foreign substances from penetrating into the clamping hole.

The clamping holes may be arranged at equal intervals, i.e. at equal angles. Accordingly, the first tools T1 inserted into the clamping holes may also be arranged at the same intervals. As another embodiment, the clamping holes may be arranged at different intervals on the first circumferential line.

The second tool clampers 130 may be provided on the turret body 110 . The second tool clampers 130 may be detachably coupled to the turret body 110 . The second tool clampers 130 may clamp second tools of a different type from the first tool. The second tools 130 may include external tools for processing the outer diameter of the material. As another example, the second tool clampers 130 may clamp the first tools.

The second tool clampers 130 may be disposed between the first tool clampers 120 . In this embodiment, the second tool clampers 130 may be arranged on the second circumferential line of the turret body 110 . The second circumferential line may be different from the first circumferential line. In this embodiment, the second circumferential line may be located outside the first circumferential line. That is, the distance from the center of the turret body 110 to the second circumferential line may be longer than the distance from the center of the turret body 110 to the first circumferential line. Here, the second circumferential line may include circumferential lines located outside the first circumferential line. That is, the number of second circumferential lines may be one or two or more. When the second circumferential line is one, the second tool clampers 130 may be disposed at positions spaced apart from the center of the turret body 110 by the same distance. When there are two or more second circumferential lines, the second tool clampers 130 may be disposed at positions spaced apart by different distances from the center of the turret body 110 .

Also, the second tool clampers 130 may be arranged between the first tool clampers 120 . Accordingly, one second tool clamper 130 may be disposed between two neighboring first tool clampers 120 . Similarly, one first tool clamper 120 may be disposed between two neighboring second tool clampers 130 . Therefore, the number of second tool clampers 130 may be equal to the number of first tool clampers 120 . As another embodiment, the second tool clamper 130 may not be disposed between at least one of the first tool clampers 120 among the neighboring first tool clampers 120 . In this case, the number of second tool clampers 130 may be less than the number of first tool clampers 120 .

The second tool clampers 130 may be arranged at the same interval, that is, at the same angle. An angle between the second tool clampers 130 may be substantially the same as an angle between the first tool clampers 120 . Accordingly, angles between each of the first tool clampers 120 and each of the second tool clampers 130 may be substantially the same. As another embodiment, angles between each of the first tool clampers 120 and each of the second tool clampers 130 may be different from each other.

Each of the second tool clampers 130 may include a clamping block disposed on the turret body 110 in a radial direction of the turret body 110 . Clamping blocks may be disposed between the clamping holes of the first tool clampers 120 . Each of the clamping blocks may have a clamping surface 132 facing the radial direction of the turret body 110 . The clamping surface 132 may correspond to an outer circumferential surface of the clamping block. Clamping faces 132 may be located on the second circumferential line. The second tools T2 may be fixed to the clamping surface 132 as a fixing member. A clamping groove 134 accommodating the second tools T2 may be formed on the clamping surface 132 . The clamping groove 134 may have a function of determining the clamping position of the second tool T2 on the clamping surface 132 . The shape and size of the clamping groove 134 may be determined according to the type of the second tool T2.

As such, since the first tool clampers 120 are disposed on the first circumferential line and the second tool clampers 130 are disposed between the first tool clampers 120 and are disposed on the second circumferential line, the first tool clampers 130 are disposed on the second circumferential line. The first tools T1 clamped to the clamper 120 and the second tools T2 clamped to the second tool clamper 130 may be alternately arranged. Therefore, interference between the first tools T1 and the second tools T2 can be prevented.

Referring to FIGS. 2 to 4 , the rotation unit may rotate the turret body 110 . Since a tool selected from among a plurality of tools for material processing needs to be placed in a processing position, the rotating unit can rotate the turret body 110 at a predetermined angle. Since any one of the first tools T1 clamped to the first tool clamper 120 and the second tools T2 clamped to the second tool clamper 130 must be placed at the machining position, the rotation unit may rotate the turret body 110 by an angle between the first tool clamper 120 and the second tool clamper 130.

The rotation unit may include a servo motor 170 and a curvic coupling 160 . The curvic coupling 160 may connect the turret body 110 to the servo motor 170. Accordingly, rotational force generated by the servo motor 170 may be transmitted to the turret body 110 through the curvic coupling 160 . The servo motor 170 may be mounted on the fixed body 150 .

The curvic coupling 160 may include a first curvic coupling member 162 , a second curvic coupling member 164 , and a third curvic coupling member 166 . The first curvic coupling member 162 may be connected to the turret body 110 . The third curvic coupling member 166 may be connected to the servo motor 170 . The first curvic coupling member 162 and the third curvic coupling member 166 may be connected via the second curvic coupling member 164 .

The curvic coupling 160 may transfer the rotational force of the servo motor 170 to the turret body 110 at an angle between the first tool clamper 120 and the second tool clamper 130 . Accordingly, the curvic coupling 160 may have a dimension twice the sum of the number of first tool clampers 120 and the number of second tool clampers 130 . For example, if the number of first tool clampers 120 and the number of second tool clampers 130 are 10, the sum of the first tool clampers 120 and the second tool clampers 130 is 20. can be a dog Therefore, since the curvic coupling 160 must impart 20 rotational angles to the turret body 110, the curvic coupling 160 can have 40 dimensions.

Additionally, the turret may further include at least one third tool clamper 140 . The third tool clamper 140 may be mounted on at least one of the second tool clampers 130 . The third tool clamper 140 may be detachably mounted to the second tool clamper 130 . The third tool clamper 140 may clamp a third tool T3 of a different type from the first and second tools T1 and T2. The third tool T3 may include a boring tool for processing a long inner diameter inside the material. As another example, the third tool clamper 140 may clamp the first tool T1 or the second tool T2.

The third tool clamper 140 may include a clamping block having a clamping hole 142 . A clamping block may be detachably mounted on the clamping surface 132 of the second tool clamper 130 . The clamping hole 142 of the third tool clamper 140 may have substantially the same structure as that of the clamping hole of the first tool clamper 120 . Accordingly, the clamping hole 142 of the third tool clamper 140 may extend along the axial direction of the turret body 110 . As shown in FIG. 9 , the third tool T3 may be inserted into the clamping holes 142 of the third tool clamper 140 . (142) The third tool T3 inserted into the clamping holes may be fixed with bolts 146. As shown in FIG. 10, when the third tool T3 is separated from the clamping hole 142, the cover 144 is installed at the entrance of the clamping hole 142 to prevent foreign substances from penetrating into the clamping hole 142. can prevent

11 is a perspective view illustrating processing of a material using a second tool clamped to a second tool clamper.

Referring to FIG. 11 , the first tool T1 may be clamped to the first tool clamper 120 . The second tool T2 may be clamped to the second tool clamper 130 . The third tool T3 may be clamped to the third tool clamper 140 .

The rotation unit rotates the turret body 110 by a predetermined angle to place the second tool T2 at the processing position. The second tool T2 may process the outer circumferential surface of the material P fixed to the chuck C to give the material P a designed outer diameter. During the material processing process using the second tool T2, since the first tool T1, the second tool T2, and the third tool T3 are staggered, the first to third tools T1, T2, Interference between T3) may not occur.

12 is a perspective view illustrating processing of a material using a third tool clamped in a third tool clamper.

The rotation unit may rotate the turret body 110 by a predetermined angle to place the third tool T3 at the processing position. The third tool T3 may process a hole in the material P fixed to the chuck C along the axial direction to give the material P a designed inner diameter. During the material processing process using the third tool T3, since the first tool T1, the second tool T2, and the third tool T3 are staggered, the first to third tools T1, T2, Interference between T3) may not occur.

13 is a perspective view illustrating processing of a material using a first tool clamped in a first tool clamper.

The rotation unit may rotate the turret body 110 by a predetermined angle to place the first tool T1 at the processing position. The first tool T3 can process grooves, screws, etc. on the inner circumferential surface of the material P. During the material processing process using the first tool T1, since the first tool T1, the second tool T2, and the third tool T3 are staggered, the first to third tools T1, T2, Interference between T3) may not occur.

As described above, according to the present embodiments, since the second tool clampers are disposed between the first tool clampers, the turret can clamp more tools corresponding to the number of second tool clampers without interference between tools. can Accordingly, various shapes can be imparted to the material without a tool change operation. As a result, the tool replacement cycle can be extended, and the operating efficiency of the machine tool can be improved.

As described above, although it has been described with reference to the preferred embodiments of the present invention, those skilled in the art will variously modify the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. And it will be understood that it can be changed.

110; Turret body 112; Front
114; outer surface 120 ; 1st tool clamper
124; cover 126; volt
130; Second tool clamper 132 ; clamping face
134; clamping groove 140; 3rd tool clamper
142; clamping hole 144; cover
146; bolt 150 ; fixed body
160; Curvic coupling 162; First curvic coupling member
164; Second curvic coupling member 166; Third curvic coupling member
170; servo motor

Claims (22)

turret body'
a plurality of first tool clampers disposed on a first circumferential line of the turret body;
a plurality of second tool clampers disposed on portions of the turret body between the first tool clampers; and
And a third tool clamper mounted on at least one of the second tool clampers,
The second tool clampers are disposed on at least one second circumferential line different from the first circumferential line,
The third tool clamper is a turret of a machine tool disposed on a circumferential line different from the first circumferential line. delete The turret of claim 1, wherein a distance from the second circumferential line to the center of the turret body is greater than a distance from the first circumferential line to the center of the turret body. The turret of claim 1, wherein the first tool clampers are arranged at equal intervals, and the second tool clampers are arranged at equal intervals. The turret of claim 4, wherein the first tool clampers and the second tool clampers have the same distance. The turret of claim 1, wherein the first tool clampers clamp first tools, and the second tool clampers clamp second tools different from the first tools. The turret of claim 1, wherein the first tool clampers include clamping holes formed on the front surface of the turret body along an axial direction of the turret body to accommodate tools. The turret of a machine tool according to claim 1, wherein the second tool clampers include clamping blocks disposed on the turret body along a radial direction of the turret body to clamp tools. The turret of claim 8, wherein each of the clamping blocks has a clamping surface for clamping the tools. The turret of claim 9, wherein a clamping groove for clamping the tool is formed on the clamping surface. delete The turret of a machine tool according to claim 1, wherein the third tool clamper includes a clamping bracket having a clamping hole accommodating a tool. The turret of claim 1, wherein the third tool clamper clamps a third tool different from tools clamped by the first and second tool clampers. The turret of claim 1, further comprising a rotation unit configured to rotate the turret body by an angle between the first tool clampers and the second tool clampers. 15. The method of claim 14, wherein the rotating unit
servo motor; and
A turret of a machine tool including a curvic coupling that transmits rotational force of the servo motor to the turret body and selectively arranges the first tool clampers and the second tool clampers at material processing positions. The turret of claim 15, wherein the curvic coupling has a dimension twice the sum of the number of the first tool clampers and the number of the second tool clampers. delete delete delete delete delete delete

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