KR20180085434A - Unit for receiving a tool and hybrid machine tool including the same - Google Patents

Abstract

The present invention relates to a tool storage unit and a complex machine having the same. The tool storage unit can comprise: an actuator; a bracket; and a gripper. The actuator can be mounted on a main shaft of a machine tool. The bracket can be moved by the actuator. The gripper can be mounted on the bracket to grip a tool having a protruding unit. Therefore, the present invention can achieve high machining accuracy by simplifying a machining process using the tool having a protruding unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tool storage unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tool storage unit and a combined machining apparatus including the tool storage unit, and more particularly to a unit for storing a tool for machining a workpiece into a special shape, and a combined machining apparatus including such a tool storage unit.

Generally, a machine tool can process a workpiece using a plurality of tools. Thus, the machine tool may include a magazine containing a plurality of tools. The tool change unit can exchange the tools in the magazine with the tools of the machine tool. On the other hand, the tool may include a general tool for machining the workpiece into a general shape, and a special tool for machining the workpiece into a special shape.

According to the related art, the tool change unit has a structure in which a general tool can be exchanged, but it may not have a structure in which a special tool can be exchanged. This may require a difficult task for the operator to attach the special tool directly to the machine tool and separate it from the machine tool. Alternatively, there may be difficulties in carrying out the process using other machine tools equipped with special tools.

The present invention provides a tool receiving unit capable of mounting a special tool on a machine tool while holding a special tool.

The present invention also provides a combined machining apparatus including the tool receiving unit described above.

The tool receiving unit according to one aspect of the present invention may include an actuator, a bracket, and a gripper. The actuator can be mounted on the main shaft of a machine tool that clamps the workpiece. The bracket may be moved by the actuator. The gripper may be mounted on the bracket to grip the tool.

In exemplary embodiments, the actuator may transmit a linear motion force along an axial direction of the major axis to the bracket.

In exemplary embodiments, the actuator may include a pneumatic cylinder.

In exemplary embodiments, the bracket may extend along an axial direction of the main shaft.

In exemplary embodiments, the gripper may extend from the bracket at an upper portion of the main shaft along a direction orthogonal to an axial direction of the main shaft.

In exemplary embodiments, the bracket may have at least one receiving recess for receiving the protrusion of the tool.

In exemplary embodiments, the machine tool may comprise a complex machine.

The composite machining apparatus according to another aspect of the present invention may include a main shaft, a chuck, a spindle, a transfer table, a magazine, a tool change unit, and a tool receiving unit. The chuck may be mounted on the spindle to clamp the workpiece. The spindle may be disposed in front of the chuck. The transfer table can move the spindle. The magazine is disposed behind the chuck, and can accommodate a plurality of general tools. The tool change unit may exchange one of the common tools in the magazine with a tool mounted on the spindle. The tool receiving unit may include an actuator disposed inside the tool change unit, a bracket moving back and forth toward the spindle by the actuator, and a gripper gripping a tool mounted on the bracket and having a protrusion .

In exemplary embodiments, the tool receiving unit is disposed within the tool change unit such that the bracket and the gripper can selectively advance back and forth toward the spindle by the actuator.

In the exemplary embodiments, the multi-tasking machine may further include a door installed in the tool changing unit and opened and closed according to forward and backward movement of the tool accommodating unit.

According to the present invention described above, the tool receiving unit can accommodate special tools having various shapes. Further, the tool receiving unit can be mounted on the main shaft, and can transfer the tool having the projecting portion to the spindle. Therefore, the machining process using the tool having the protruding portion is simplified, and high machining accuracy can be obtained.

1 is a perspective view showing a combined machine according to an embodiment of the present invention.
Fig. 2 is an enlarged perspective view of the tool housing unit of the multi-function machine shown in Fig. 1. Fig.
3 is a front view showing the tool storage unit shown in Fig.
4 is a plan view showing the tool housing unit shown in Fig.
5 to 10 are perspective views sequentially showing the operation of the tool housing unit shown in Fig.

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

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, etc. 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 a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, 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 this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

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

Referring to FIG. 1, a combined machine according to the present embodiment includes a bed 110, a main shaft 120, a chuck 130, a spindle 140, a conveyance belt 150, a magazine 160, a tool changing unit 170 ), A tool receiving unit 180, and a door 190.

The main shaft 120 may be disposed on the upper surface of the bed 110. The chuck 130 may be mounted on the front end of the main shaft 120. The front end of the main shaft 120 may be an end directed toward the first horizontal direction. The chuck 130 can clamp the work W. The first horizontal direction may be the axial direction of the main shaft 120.

The spindle 140 may be disposed in front of the chuck 130, that is, in front of the main shaft 120. The spindle 140 can clamp a conventional tool or a special tool T. The rotation of the spindle 140 enables the general tool or the special tool T to machine the workpiece W clamped to the chuck 130. [ The spindle 140 may include a spindle for milling. However, the spindle 140 may be another working spindle.

The conveyance belt 150 can move the spindle 140 along the first horizontal direction and the second horizontal direction. The second horizontal direction may be a direction opposite to the first horizontal direction. That is, the conveyance belt 150 can advance and retract the spindle 140 toward the chuck 130.

The magazine 160 may be disposed behind the main shaft 120. Specifically, the magazine 160 may be disposed adjacent to the rear end of the main shaft 120 facing the second horizontal direction. The magazine 160 can house a plurality of general tools.

The tool change unit 170 can be mounted on the magazine 160. [ The tool change unit 170 can replace the existing tool clamped in the spindle 140 with another tool housed in the magazine 160. [ The structure of the tool change unit 170 may not be limited to a specific structure.

The tool accommodating unit 180 can be disposed in the tool changing unit 170. The tool receiving unit 180 can receive at least one tool T having a protrusion. That is, the tool T having the projection accommodated in the tool accommodating unit 180 may have a structure different from that of a general tool accommodated in the magazine 160. In addition, the tool receiving unit 180 may replace the tool T having the projection with an existing tool of the spindle 140. [

3 is a front view showing the tool storage unit shown in Fig. 2, and Fig. 4 is a view showing the tool storage unit shown in Fig. 3; Fig. 3 is a front view showing the tool storage unit shown in Fig. FIG.

2 to 4, the tool receiving unit 180 may include an actuator 182, a bracket 184, and a gripper 186. [

The actuator 182 may be mounted at the rear end of the outer circumferential surface of the main shaft 120. In particular, the actuator 182 may be mounted on the upper portion of the outer circumferential surface of the main shaft 120. The actuator 182 can generate a linear motion force along the axial direction of the main shaft 120, that is, along the first horizontal direction and the second horizontal direction. In this embodiment, the actuator 182 may comprise a pneumatic cylinder. However, the actuator 182 may include other drive mechanisms such as hydraulic cylinders, motors, etc. in addition to the pneumatic cylinders. In another embodiment, the actuator 182 may be mounted separately from the main shaft 120 without being mounted on the main shaft 120.

The bracket 184 may be connected to the actuator 182. The bracket 184 may have a shape extending along the first horizontal direction. Therefore, the bracket 184 can be disposed on the top of the main shaft 120. [ When a linear movement force is generated along the first horizontal direction from the actuator 182, the bracket 184 can advance along the first horizontal direction. Conversely, if a linear motion force is generated along the second horizontal direction from the actuator 182, the bracket 184 can move backward along the second horizontal direction.

The bracket 184 may have at least one receiving groove 185. The projection of the tool T, that is, the protrusion of the tool T for processing the work W into a special shape can be received in the receiving groove 185. [ The tool T may include an angle head, a large boring bar, a tool with a long length, a heavy tool, and the like. Therefore, the shape of the receiving groove 185 can be changed depending on the type of the tool T. [

The gripper 186 may be mounted on the inner surface of the bracket 184. In particular, the gripper 186 may be mounted at the front end of the bracket 184. The gripper 186 can grip the body portion of the tool T. [ The gripper 186 may be operated by a mechanical drive mechanism or a hydraulic drive mechanism.

The body portion of the tool T is gripped by the gripper 186 and the machining tip of the tool T can be received in the receiving groove 185. [ The inner surface of the bracket 184 may face the central portion of the main shaft 120. The gripper 186 may extend from the bracket 184 along the third horizontal direction. The third horizontal direction may be a direction substantially perpendicular to the first and second horizontal directions. Accordingly, the third horizontal direction may be a direction substantially perpendicular to the axial direction of the main shaft 120. [ Therefore, the gripper 186 may be located on the top of the main shaft 120. [

The bracket 184 and the gripper 186 can be advanced along the first horizontal direction by the actuator 182 and can be taken out of the tool change unit 170. [ The door 190 is installed in the tool changing unit 170 and can selectively expose the tool accommodating unit 180 disposed in the tool changing unit 170. The door 190 may be rotatably connected to the tool change unit 170. Alternatively, the door 190 may be slidably opened and closed by an actuator mounted on the tool changing unit 170.

5 to 10 are perspective views sequentially showing the operation of the tool housing unit shown in Fig.

Referring to Fig. 5, the gripper 186 may be a tool having a protrusion, in this embodiment, an angle head. The protrusion of the angle head may be accommodated in the receiving groove 185 of the bracket 184.

When the door 190 is opened, the bracket 184 and the gripper 186 can be advanced along the first horizontal direction by the actuator 182. The advanced gripper 186 may be located above the main shaft 120.

Referring to FIG. 6, the conveyance belt 150 can move the spindle 140 toward the gripper 186 along the second horizontal direction.

Referring to FIG. 7, the angle head may be transmitted from the gripper 186 to the spindle 140. When the angle head is firmly clamped to the spindle 140, the conveyance belt 150 can move the spindle 140 along the third horizontal direction. Accordingly, the angle head can be detached from the receiving groove 185 of the bracket 184 while the angle head is clamped to the spindle 140.

Referring to FIG. 8, the transfer platform 150 can move the spindle 140 holding the angle head along the first horizontal direction.

Referring to FIG. 9, the actuator 182 can move the bracket 184 and the gripper 186 backward. When the bracket 184 and the gripper 186 return to their original positions, the door 190 can be closed.

Referring to FIG. 10, the angle head mounted on the spindle 140 can process the inner surface of the hole of the work W into a special shape.

As described above, according to the present embodiment, the tool accommodating unit can accommodate tools having various shapes. Further, the tool receiving unit can be mounted on the main shaft, and the tool having the protruding portion can be transferred to the spindle. Therefore, the machining process using the tool having such protruding portion is simplified, and high machining accuracy can be obtained.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. And changes may be made without departing from the spirit and scope of the invention.

110; Bed 120; principal axis
130; Chuck 140; Spindle
150; Conveying table 160; magazine
170; A tool changing unit 180; Special tool storage unit
182; Actuator 184; Bracket
185; Receiving groove 186; Gripper
190; door

Claims (10)

An actuator mounted on a main shaft of a machine tool for clamping a workpiece;
A bracket moved by the actuator; And
And a gripper mounted on the bracket for gripping the tool. The tool storage unit according to claim 1, wherein the actuator transmits a linear motion force along an axial direction of the main shaft to the bracket. The tool storage unit according to claim 2, wherein the actuator includes a pneumatic cylinder. The tool storage unit according to claim 2, wherein the bracket extends along an axial direction of the main shaft. 5. The tool storage unit according to claim 4, wherein the gripper extends from the bracket at an upper portion of the main shaft along a direction orthogonal to an axial direction of the main shaft. The tool receiving unit according to claim 1, wherein the bracket has at least one receiving groove for receiving a projection of the tool. The tool housing unit according to claim 1, wherein the machine tool comprises a complex machine. principal axis;
A chuck mounted on the main shaft for clamping the workpiece;
A spindle disposed in front of the chuck;
A transfer table for moving the spindle;
A magazine disposed behind the chuck for receiving a plurality of common tools;
A tool changing unit for replacing one of ordinary tools in the magazine with a common tool mounted on the spindle; And
And a tool housing unit including an actuator disposed inside the tool change unit, a bracket moving forward and backward by the actuator toward the spindle, and a gripper holding a tool having a protrusion mounted on the bracket. Processing machine. The combination machine as claimed in claim 8, wherein the tool receiving unit is disposed inside the tool change unit, and the bracket and the gripper selectively advance and retreat toward the spindle by the actuator. The combined working machine according to claim 9, further comprising a door installed in the tool changing unit and being opened or closed in accordance with the forward / backward movement of the tool accommodating unit.

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