Tool holder for auto tool changer

Abstract

The present invention relates to a tool holder for an automatic tool changer that is installed in a tool pocket formed in the tool magazine of the automatic tool changer to secure a tool, and more specifically, to a tool holder for an automatic tool changer that can maintain grip strength even with repetitive use and improve the positional precision and uprightness of the tool. Looking at its configuration, it includes a holder body comprising an installation part installed in the tool pocket and a mounting part on which a tool is mounted, and a grip ring coupled to the tool and seated on the mounting part. In this case, the holder body is made of a material capable of elastic deformation, and the grip ring is made of a material with higher rigidity than the holder body.

Description

Technology Field

[0001] The present invention relates to a tool holder for an automatic tool changer, and more specifically, to a tool holder for an automatic tool changer that can maintain grip strength even with repetitive use and improve the positional precision and uprightness of a tool. Background Technology

[0002] A machining center is a complex machine tool that combines a boring machine, a milling machine, and a drilling machine into a single unit.

[0003] These machining centers are configured to include an Automatic Tool Changer (ATC) that automatically exchanges multiple tools according to cutting conditions.

[0004] Typically, an automatic tool changer is provided with a tool magazine having a plurality of mounting cells in which tools are mounted, and a tool pick-up unit for removing tools from the mounting cells.

[0005] FIG. 5 illustrates a tool holder for an automatic tool changer according to the prior art.

[0006] As shown in FIG. 5, a plurality of tool pockets (12) are formed in the tool magazine (10) of an automatic tool changer, and a tool holder (20) for holding a tool (T) is provided in the plurality of tool pockets (12).

[0007] The aforementioned tool holder (20) is a metal sleeve having a cut-out (22) formed at the top, and by applying elastic force through the cut-out (22), the tool (T) can be mounted in an upright position.

[0008] However, since the conventional tool holder (20) is made of metal, there was a problem in that the elasticity decreased and the grip strength weakened when the tool (T) was repeatedly exchanged, that is, mounted or withdrawn.

[0009] As such, when the gripping force of the tool holder (20) weakens, the mounted tool (T) cannot be maintained in an upright state, causing it to become misaligned with the center of the spindle during tool replacement, and this causes the tool (T) to be damaged or broken during the tool replacement process. The problem to be solved

[0010] The present invention aims to solve the problems of the aforementioned prior art by providing a tool holder for an automatic tool changer that can maintain grip strength even with repeated use and improve the positional precision and uprightness of the tool. means of solving the problem

[0011] The present invention, for achieving the above objective, comprises a holder for fixing a tool installed in a tool pocket formed in a tool magazine of an automatic tool changer, the holder body comprising an installation part installed in the tool pocket and a mounting part on which the tool is mounted, and a grip ring coupled to the tool and seated on the mounting part. In this case, the holder body is made of a material capable of elastic deformation, and the grip ring is made of a material having higher rigidity than the holder body. Effects of the invention

[0012] The present invention, configured as described above, can maintain grip strength even during repeated use by manufacturing the holder body from an elastically deformable material, and in particular, can improve the positional precision and uprightness of the tool by manufacturing the grip ring from a material with higher rigidity than the holder body. Brief explanation of the drawing

[0013] FIG. 1 is a perspective view of a tool holder for an automatic tool changer according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of a tool holder for an automatic tool changer according to one embodiment of the present invention. FIG. 3 is a cross-sectional view of a tool holder for an automatic tool changer according to an embodiment of the present invention. FIG. 4 is a drawing illustrating the process of mounting a tool in a tool holder for an automatic tool changer according to one embodiment of the present invention. FIG. 5 is a drawing illustrating a tool holder for an automatic tool changer according to the prior art. Specific details for implementing the invention

[0014] The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

[0015] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0016] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0017] In the following, the statement that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that the any configuration is placed in contact with the upper (or lower) surface of the component, but also that another configuration may be interposed between the component and the any configuration placed on (or below) the component.

[0018] In addition, where it is stated that one component is "connected," "combined," or "connected" to another component, it should be understood that while the components may be directly connected or connected to each other, another component may be "interposed" between each component, or each component may be "connected," "combined," or "connected" through another component.

[0019] Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included.

[0020] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise, and "C to D" means C or more and D or less unless specifically stated otherwise.

[0021] FIG. 1 is a perspective view of a tool holder for an automatic tool changer according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of a tool holder for an automatic tool changer according to one embodiment of the present invention, and FIG. 3 is a cross-sectional view of a tool holder for an automatic tool changer according to one embodiment of the present invention.

[0022] A tool holder (100) for an automatic tool changer according to one embodiment of the present invention is a holder installed in the tool magazine (10 in FIG. 5) of an automatic tool changer to fix a tool (T), and is a holder that can improve the positional precision and uprightness of the tool (T) by maintaining the grip force of the tool (T) even with repeated use.

[0023] Referring to FIGS. 1 to 3, the tool holder (100) for an automatic tool changer according to the present embodiment is as follows.

[0024] A tool holder (100) for an automatic tool changer comprises a holder body (110) installed in a tool magazine (10 in FIG. 5), a grip ring (120) provided on a tool (T) and seated on the holder body (110), and an extension limiting ring (130) coupled to the holder body (110).

[0025] The holder body (110) is a component that holds a tool (T) used for cutting processes, etc., and at the same time mounts the held tool (T) to a tool magazine (10 in FIG. 5).

[0026] The holder body (110) can detachably accommodate and mount a tool (T), and is also formed in a multi-stage pipe shape so as to be mounted in a tool pocket (12 in FIG. 5).

[0027] That is, a flange (111) with a relatively large diameter is formed in the middle of the holder body (110), and a mounting part (112) and an installation part (113) with a relatively small diameter are provided at the upper and lower ends of the flange (111), respectively.

[0028] The mounting portion (112) is a part in which a tool (T) used for cutting processes, etc. is stored. More specifically, it is a part in which a tool (T) is stored, including a grip ring (120) for securing the positional precision and uprightness of the tool (T).

[0029] The mounting portion (112) is formed in the shape of a hollow pipe so as to accommodate and mount a tool (T). At this time, an expansion slit (114) is formed around the perimeter of the mounting portion (112) so that the mounting portion (112) can expand (elastically deform) when mounting or withdrawing the tool (T).

[0030] To this end, the expansion slit (114) extends along the longitudinal direction of the mounting portion (112) and has a shape that is open through the top of the mounting portion (112), and is arranged radially along the circumference of the mounting portion (112).

[0031] In this way, when an expansion slit (114) is formed in the mounting portion (112), the mounting portion (112) can be expanded (elastically deformed) during the process of mounting or withdrawing the tool (T), so the tool (T) can be mounted or withdrawn more easily.

[0032] A mounting section (115) is provided in the middle interior of the mounting section (112) to accommodate a tool (T) including a grip ring (120). The mounting section (115) has a shape that protrudes into the interior of the mounting section (112) so that the grip ring (120) coupled to the tool (T) can be accommodated.

[0033] A fixing projection (116) is formed in the upper interior of the mounting portion (112) to fix a tool (T) to which a grip ring (120) is attached. The fixing projection (116) prevents the tool (T) from being withdrawn arbitrarily by fixing the grip ring (120) attached to the tool (T). At this time, a fixing groove (122) corresponding to the fixing projection (116) is formed in the grip ring (120) attached to the tool (T).

[0034] The installation part (113) is a part for installing the holder body (110) in the tool magazine (10 in FIG. 5), and is formed in a multi-stage shape with a diameter that decreases toward the bottom so that it can be easily inserted into the tool pocket (12 in FIG. 5) of the tool magazine (10 in FIG. 5).

[0035] It is preferable that the holder body (110) of the above-described structure be made of an elastically deformable material so as to maintain grip strength even with repeated use. For example, the holder body (110) of the present embodiment may be made of a synthetic resin material such as nylon, which has excellent elasticity and constant strength.

[0036] The grip ring (120) is a component for ensuring positional precision and uprightness of the tool (T) mounted on the holder body (110).

[0037] The grip ring (120) is formed in a multi-stage pipe shape so that the tool (T) can be connected through it, and can be seated on the mounting end (115) of the mounting part (112) and can be in close contact with the inner wall of the mounting part (112).

[0038] A fixing groove (122) corresponding to a fixing projection (115) is formed at the top of the grip ring (120), that is, around the top circumference of the relatively large diameter, to prevent the tool (T) mounted on the mounting part (112) from being withdrawn arbitrarily.

[0039] In this embodiment, the grip ring (120) is preferably made of a material with higher rigidity than the holder body (110) so that positional precision and uprightness can be ensured even with repeated use. In particular, the grip ring (120) is preferably made of a metal material such as copper, which has lower rigidity than the tool (T), so that the tool (T) can be prevented from being damaged or broken.

[0040] The expansion limiting ring (130) is a component that limits the expansion of the mounting part (110).

[0041] The expansion limiting ring (130) is formed in an annular shape to surround the perimeter of the mounting portion (110), and is fitted onto the mounting portion (110) and seated on the flange (111) to limit the expansion (elastic deformation) of the mounting portion (110).

[0042] That is, the expansion limiting ring (130) prevents the mounting portion (110) from exceeding its elastic limit and undergoing plastic deformation by limiting the expansion (elastic deformation) of the mounting portion (110) during the process of mounting or withdrawing the tool (T) to which the grip ring (120) is attached.

[0043] FIG. 4 illustrates the process of mounting a tool in a tool holder for an automatic tool changer according to one embodiment of the present invention.

[0044] First, a grip ring (120) is attached to a shaft-shaped tool (T), and then the tool (T) with the grip ring (120) attached is inserted into a holder body (110) with an extension limit ring (130) attached and mounted.

[0045] At this time, the holder body (110) is made of an elastically deformable material so that it can maintain grip strength even with repeated use. In particular, the grip ring (120) is made of a material with higher rigidity than the holder body (110) so that the positional precision and uprightness of the tool (T) can be improved.

[0046] Although the present invention has been described above with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed in this specification, and it is obvious that various modifications can be made by a person skilled in the art within the scope of the technical concept of the present invention. Furthermore, even if the effects of the configuration according to the present invention were not explicitly described while describing the embodiments of the present invention above, it is natural to acknowledge that the effects predictable by said configuration should also be recognized. Explanation of the symbols

[0047] 100: Tool holder 110: Holder body 120: Grip Ring 130: Extension Limit Ring

Claims

Claim 1 A tool holder for an automatic tool changer, comprising: a holder body (110) formed in a tool pocket formed in a tool magazine of an automatic tool changer to fix a tool, the holder body comprising a mounting portion on which a tool is mounted and a mounting portion (13) installed in the tool pocket; and a grip ring coupled to a tool and inserted into and seated in the mounting portion, wherein the mounting portion has an expansion slit for inserting and withdrawing the grip ring coupled to the tool and a fixing projection (116) for fixing the grip ring inserted into and seated in the mounting portion, and the grip ring has a fixing groove corresponding to the fixing projection formed in the grip ring, and an expansion limiting ring coupled to the mounting portion to limit expansion. Claim 2 A tool holder for an automatic tool changer according to claim 1, wherein the holder body is made of an elastically deformable synthetic resin material, and the grip ring is made of a metal material having a higher rigidity than the holder body but a lower rigidity than the tool. Claim 3 A tool holder for an automatic tool changer according to claim 2, wherein the grip ring is in the shape of a multi-stage pipe. Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete

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