KR20130060444A - Material grip apparatus for machine tools - Google Patents

Abstract

PURPOSE: A material gripper for a machine tool is provided to prevent safety accidents by automatically detaching a workpiece processed in a rod shape and to precisely process the dimensions of the component by precisely adjusting the center of a chuck and a material in a straight line. CONSTITUTION: A material gripper for a machine tool comprises a body(1), a hollow guide shaft(2), and a piston. The guide shaft includes a long groove(21) to a cylinder(11) in a longitudinal direction and a piston shaft connected to a position through the long groove. The piston shaft includes an inlet and an outlet communicating with one side and the other side. The inlet is exposed to the long groove for flowing the operating fluid filled inside the cylinder. The outlet can discharge or prevent the operating fluid from discharging by selectively being exposed or sealed to a fluid discharging hole of a tool shaft(12) according to the movement of the piston shaft.

Description

Material grip device for machine tools {MATERIAL GRIP APPARATUS FOR MACHINE TOOLS}

 The present invention relates to a material grip device for a machine tool, and more particularly, is mounted on a turret in which tools of a machine tool, such as a CNC lathe, are mounted. The G code input value of the machine tool is programmed to automatically apply a material to the chuck. The present invention relates to a gripping device for a machine tool having a structure capable of significantly improving workability and productivity by performing a series of CNC lathe operations more efficiently by automatically holding and moving a workpiece formed by tools or tools.

In general, in CNC automatic lathes etc., for example, external or internal cutting, drilling and threading are performed according to a preprogrammed from a long rod-like material, and the machine parts are automatically cut by a predetermined length. To produce.

This automatic lathe is a computer-controlled machining of the parts required by the various tools necessary for the machining work, pre-mounted in the turret while rotating the rod-like material from the chuck installed on the main shaft.

At this time, the workpiece processed by the rod-like material bitten by the chuck was normally detached by hand, so that there was always a risk of safety accident.

In addition, when manually fixing the material to the chuck has a problem that takes a very long time because the material must be fixed in a straight line to the chuck.

In particular, if the material is fixed manually, the center of gravity is often not centered, and if it is rotated by the chuck in that state, the amplitude becomes large, which leads to excessive pressure on the machine tool itself and the risk of an accident, and it is difficult to precisely dimension the parts.

In recent years, a separate device for automatically feeding the material to the chuck has been invented, but since such a device needs to be supplied with the bar in connection with the machining of parts, it is configured to be controlled by a computer provided in the automatic lathe, It was a big burden for the user, and the volume was large, so there was a problem in occupying a large area during installation.

The present invention has been made in view of the above problems, and the first object of the present invention is mounted on a turret in which tools of a machine tool, such as a CNC lathe, are mounted, and programmed by the G code input value of the machine tool. By supplying the material to the chuck or by automatically holding and moving the workpiece formed by the tools, a series of CNC lathes can be performed more efficiently, which greatly improves workability and productivity. To provide a device.

The second object of the present invention is to grasp a workpiece that is automatically machined using a working fluid that is programmed and controlled by a G code input of a machine tool, or grab a workpiece after supplying a non-moving material to the chuck. To provide a material grip device for a machine tool configured to be released.

According to a feature of the present invention for achieving the object as described above, the first invention relates to a workpiece material grip device for a machine tool, the fluid supply hole so that one side is open so that the working fluid can be supplied to the outer peripheral surface A cylinder 11 on which the 111 is formed and a fluid discharge hole 121 extending to the other side of the cylinder 11 to be mounted to the turret 4 and discharging the working fluid in the axial direction are formed. A body (1) consisting of a tool shaft (12); and a gripper arm for gripping the processed workpiece (61) or the raw material (61) on one side across the center of the cylinder (11) of the body (1). (22) is fixed to the link, the other side of the hollow guide shaft (2) is inserted and fixed to the center of the fluid discharge hole 121 of the tool shaft (12); And an outer circumferential surface is reciprocated by a working fluid which is inserted into and supplied into a cylinder of the body 1, and a guide hole 31 penetrates in a central axial direction so that the outer circumferential surface can be constructed and guided on the outer circumferential surface of the guide shaft 2. It is formed, the piston (3) is fixed to the fixed arm 34 for operating the gripper arm 22 through the linking arm 341 is coupled to link the gripper arm 22 in accordance with the movement It is made, including; the guide shaft (2) is formed in the longitudinal groove 21 in the longitudinal direction on the position of the cylinder (11) piston shaft coupled to the piston (3) through the long groove 21 ( 33 is arranged therein, the piston shaft 33 further includes an inlet hole 331 and the outlet hole 332 mutually in communication with one side and the other side, the inlet hole 331 of the cylinder (11) Exposed onto the intestinal groove 21 to introduce the working fluid filled into the inside The discharge hole 332 is selectively exposed or sealed onto the fluid discharge hole 121 of the tool shaft 12 according to the movement of the piston shaft 33 to be configured to discharge the working fluid or block the discharge. It features.

In the second invention, in the first invention, it is preferable that the piston 3 further includes an elastic coil 32 inserted into the outer circumferential surface of the guide shaft 2 and mounted in the guide hole 31.

In a third invention, in the first invention, the piston 3 has at least one sealing ring (S / R) for sealing the cylinder 11 and the guide shaft 2 and the other outer circumferential surface and the inner circumferential surface of the guide hole 31. It is preferable to further include.

The fourth invention, in the first invention, further comprises at least one sealing ring (S / R) for sealing with the piston shaft (33) interlocked with the piston (3) to the other inner peripheral surface of the guide shaft (2). It is preferable to include.

In a fifth invention, in the first invention, the workpiece material gripping apparatus for the machine tool is preferably programmed and automatically operated by the G code input value of the machine tool.

According to the material grip device for a machine tool according to the present invention, the rod-like material bitten by the chuck can be automatically detached from the workpiece, thereby preventing the risk of a safety accident.

In addition, the foot can automatically align the center of the chuck and the material automatically and precisely in a straight line, which has the effect of accurate dimensioning of parts.

In addition, the present invention is to be programmed by the G code input value of the machine tool to automatically supply the material to the chuck or to automatically grip and move the workpiece formed by the tools, to perform a series of CNC lathe work more efficiently There is an effect that can significantly improve workability and productivity.

In addition, the present invention can be mounted on a turret in which tools of a machine tool, such as a CNC lathe, are mounted, so that the installation space is not restricted.

In addition, since the present invention uses a working fluid that is programmed and controlled by the G code input value of the machine tool, the reliability of the operation is very high.

1 is a perspective view of a material grip device for a machine tool according to the present invention;
Fig. 2 is an exploded perspective view of Fig. 1,
3 is a cross-sectional view of FIG.
4 is a perspective view showing a state in which a grip material for a machine tool is mounted on a turret of a machine tool;
5 to 8 is an operation view showing a state in which the grip material for the machine tool mounted on the turret gripping the workpiece fixed to the chuck.

Hereinafter will be described in detail with the accompanying drawings with respect to the material grip device for a machine tool according to the present invention.

1 is a perspective view of a material grip device for a machine tool according to the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a cross-sectional configuration of Figure 1, Figure 4 is a material grip device for a machine tool machine tool A perspective view showing the state mounted on the turret.

First, as shown in FIGS. 1 to 4, the present invention relates to a material grip device for a machine tool, and more particularly, is mounted on a turret in which tools of a machine tool, such as a CNC lathe, are mounted. Input values are programmed to automatically feed material to the chuck or to automatically grasp and move workpieces formed by the tools, enabling a series of CNC lathes to be performed more efficiently, significantly improving workability and productivity. A gripping device for a machine tool having a structure.

The material grip device for machine tools is composed of three parts, which is composed of a body 1, a guide shaft 2, and a piston 3.

Here, the body 1 is a tool shaft mounted to the turret 4 of the machine tool extending to the cylinder 11 and the other side of the cylinder 11, the piston 3 is installed so that it can be operated by the working fluid ( 12).

The cylinder 11 has a structure in which one side is opened so that the piston 3 can be inserted, and a fluid supply hole 111 is formed on the outer circumferential surface so that the working fluid can be supplied through the turret 4.

In addition, the tool shaft 12 is formed on the other side of the cylinder 11 is formed with a fluid discharge hole 121 that can discharge the working fluid in the axial direction.

In the body 1 of this configuration, when the tool shaft 12 is inserted into and fixed to the tool holder 41 formed in the turret 4, the fluid supply hole 111 formed in the cylinder 11 is formed inside the turret 4. The fluid discharge hole 121 formed in the tool shaft 12 and in communication with the formed working fluid supply path 42 is configured to communicate with the discharge path 43 formed inside the turret 4.

The guide shaft 2 has a hollow shape to allow the piston shaft 33 to be described later, and the fluid discharge hole of the tool shaft 12 across the center of the cylinder 11 of the body 1. It is a structure that is inserted into and fixed to the (121).

In addition, one side of the guide shaft (2) is fixed to the gripper arm 22 for gripping the processed workpiece or raw material.

In addition, the piston 3 has a structure in which an outer circumferential surface is inserted into the cylinder 11 and is operated by pressure on a working fluid filled through the fluid supply hole 111 of the cylinder 11.

At this time, the piston 3 has a structure in which the guide hole 31 penetrates in the center axial direction so as to be moved along the guide shaft 2 arranged at the center of the cylinder 11.

In addition, the gripper arm 22 is connected to one end of the piston 3 via a linking arm 341 which is linked to operate the gripper arm 22 coupled to the guide shaft 2 in accordance with movement. The fixed arm 34 for actuation is fixed.

When the piston 3 moves to one side opened by the working fluid filled with the cylinder 11, the connection arm 341 linked to the fixed arm 34 retracts the gripper arm 22 to form a workpiece or a material. It is configured to hold the.

The piston 3 is inserted into the outer circumferential surface of the guide shaft 2 so that the piston 3 can be moved to the other side of the cylinder 11 by the elastic force when the supply of the working fluid is stopped. The structure further includes 32).

The elastic coil 32 is elastically installed by an inner step 311 formed on the inner circumferential surface of the guide hole 31 and an outer step 23 formed on the outside of one side of the guide shaft 2.

In addition, the guide shaft 2 is a piston shaft 33 is coupled to the piston 3 and the pin 35 through the long groove 21 is formed with a long groove 21 in the longitudinal direction on the position of the cylinder (11). Is built up inside.

Here, the piston shaft 33 is configured to be moved together with the piston (3) in the interior of the guide shaft (2) through the pin 35, which is a long groove formed in the guide shaft (2) as a result A function of determining the moving section of the piston (3) so that the piston (3) is not separated to one side of the open cylinder through (21).

In addition, the piston shaft 33 further includes an inlet hole 331 and the outlet hole 332 in mutual communication with one side and the other side, the inlet hole 331 is a working fluid filled into the cylinder (11) The discharge hole 332 is selectively exposed or sealed onto the fluid discharge hole 121 of the tool shaft 12 according to the movement of the piston shaft 33. It is configured to discharge or block the fluid.

That is, the discharge hole of the piston shaft 33 in the state in which the piston is inserted into the cylinder 11 (the state in which the piston is completely entered into the cylinder by the elastic force of the elastic coil due to no supply of the working fluid). 332 is a structure that is exposed on the fluid discharge hole 121 of the tool shaft 12, on the contrary, the working fluid is supplied into the cylinder 11 so that the piston 3 is one side of the cylinder 11 by the fluid pressure In the state moved to the discharge shaft 332 of the piston shaft 33 is a structure that is sealed on the guide shaft (2).

At this time, the other inner circumferential surface of the guide shaft 2 is coupled to at least one seal ring (S / R) for the seal with the piston shaft 33 which is interlocked with the piston (3).

In addition, the piston (3) also the other outer peripheral surface and the guide hole 31, the inner peripheral surface of the cylinder 11 and the guide shaft (2) and at least one seal ring (S / R) for each seal is coupled to the pressure of the working fluid It is configured not to fall.

Hereinafter, the installation and operation of the material grip device for a machine tool according to the present invention will be briefly described together with the accompanying drawings.

5 to 8 is an operation view showing a state in which the grip material for the machine tool mounted on the turret gripping the workpiece fixed to the chuck.

First, prior to the description with reference to the drawings, a method of installing in the turret of the machine tool will be described first.

First, program the workpiece cutting G code input of the material, the tool holder G code input of the turret equipped with the gripping device, and the G code input value for supplying the working fluid to the gripping device. Enter it.

After that, according to the tool holder G code input value of the turret, the material grip device for the machine tool of the present invention is mounted on the tool holder of the turret.

Then, manually set the tool and grip device on the turret to approach the material and set the O points, respectively, and enter these settings into the G code.

After that, when the program is executed, the tool 44 mounted on the turret forms the workpiece and the workpiece is completed, and the turret is moved to its original position.

The turret is then rotated to the position of the workpiece in accordance with the G code input value so that the workpiece is gripped and the workpiece is positioned on the same horizontal line.

Thereafter, as shown in FIG. 5, the turret 4 is moved to the position of the workpiece 61 machined by zero setting of the grip device.

The working fluid is filled into the cylinder 11 through the supply path 42 of the turret 4 and the fluid supply hole 111 of the cylinder 11 by the programmed G code input value.

Thereafter, as shown in FIG. 6, the piston 3 moves to one side by the filling pressure of the working fluid. Then, the connecting arm 341 linked to the fixed arm 34 of the piston 3 grips the gripper arm 22 to grip the workpiece 61.

At this time, the discharge hole 332 of the piston shaft 33 is sealed on the guide shaft 2 so that the pressure of the working fluid does not fall.

Then, the chuck 6 fixing the work piece 61 releases the work piece 61 by the G code input value. After that, the turret 4 has the work piece 61 held by the gripper arm 22. To the original position.

In addition, as shown in FIG. 7, after a predetermined time elapses according to the G code input value, the supply of the working fluid to the inside of the cylinder 11 is stopped, and thus the filling pressure of the working fluid falls inside the cylinder 11. A part of the working fluid filled by the elastic force of the elastic coil 32 embedded in the piston 3 is backed up to the supply path 42 of the turret 4.

As shown in FIG. 8, when the piston 3 moves to the other side due to a partial backup of the working fluid, the discharge hole 332 of the piston shaft 33 passes through the guide shaft 2 and the fluid discharge hole of the tool shaft 12. 121).

Then, the working fluid filled in the cylinder 11 is discharged into the inlet hole 331 exposed to the long groove 21 and the discharge hole 332 is in communication with the inlet hole 331, discharged through the discharge hole 332 The working fluid is discharged along the fluid discharge hole 121 of the tool shaft 12 and the discharge passage 43 of the turret 4 (see FIG. 7).

Then, the piston 3 is continuously moved to one side of the cylinder 11 by the elastic force of the elastic coil 32, so that the connection arm 341 linked to the fixed arm 34 of the piston 3 is The gripper arm 22 is opened to release the gripped workpiece 61.

On the other hand, a separate grip device holding the raw material for the next process can be further mounted on the holder of the turret, and then automatically supplied to the chuck of the machine tool according to the programmed G code input. The description will be omitted.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

1: Body 11: Cylinder 111: Fluid supply hole
12: tool shaft 121: fluid discharge hole
2: guide shaft 21: long groove 22: gripper arm
23: Outer step
3: piston 31: guide hole 311: internal step
32: elastic coil
33: piston shaft 331: inlet hole
332: discharge hole
34: fixed arm 341: connecting arm
35: pin
4: turret 41: toolholder 42: supply path
43: exit path 44: tool
5: material grip device for machine tools of the present invention
6: chuck 61: material, workpiece
S / R: Sealing

Claims (5)

A grip installed on the turret 4 of the machine tool to automatically supply the material 61 to the chuck 6 by a working fluid or to automatically grip and detach the machined work 61 fixed to the chuck 6. In the device,
One side is opened to extend the cylinder 11 and the other side of the cylinder 11 to be mounted on the cylinder 11, the fluid supply hole 111 is formed so that the working fluid can be supplied to the outer peripheral surface and the axial direction A body 1 comprising a tool shaft 12 in which a fluid discharge hole 121 capable of discharging a working fluid is formed;
A gripper arm 22 for gripping a workpiece 61 or an unprocessed material 61 is fixed to one side across the center of the cylinder 11 of the body 1, and the other side is the tool shaft. A hollow guide shaft 2 inserted into and fixed to the center of the fluid discharge hole 121 of 12); And
The outer circumferential surface is reciprocated by a working fluid which is inserted into and supplied into the cylinder of the body 1, and the guide hole 31 is formed through the guide hole 31 so that the outer circumferential surface thereof can be arranged and guided on the outer circumferential surface of the guide shaft 2. A piston (3) to which a fixed arm (34) for activating the gripper arm (22) through a linking arm (341) that is linked to be coupled to one end to move the gripper arm (22) according to movement; Including but not limited to,
The guide shaft 2 has a long groove 21 is formed in the longitudinal direction on the position of the cylinder 11, the piston shaft 33 coupled to the piston 3 through the long groove 21 is built in the inside ,
The piston shaft 33 further includes an inlet hole 331 and an outlet hole 332 which are mutually in communication with one side and the other side, the inlet hole 331 is introduced into the working fluid filled into the cylinder (11) The discharge hole 332 is selectively exposed or sealed onto the fluid discharge hole 121 of the tool shaft 12 according to the movement of the piston shaft 33. Workpiece material grip device for a machine tool, characterized in that configured to discharge or block the discharge.
The method of claim 1,
And the piston (3) further includes an elastic coil (32) inserted into the outer circumferential surface of the guide shaft (2) and coalesced in the guide hole (31).
The method of claim 1,
The piston (3) is a machine tool, characterized in that the other outer peripheral surface and the inner peripheral surface of the guide hole 31 further comprises at least one seal ring (S / R) for the cylinder 11 and the guide shaft (2) and the seal Workpiece grip for work.
The method of claim 1,
The other inner peripheral surface of the guide shaft 2 further comprises at least one sealing ring (S / R) for sealing with the piston shaft 33 which is interlocked with the piston (3) Material grip device.
The method of claim 1,
The workpiece material grip device for a machine tool is a workpiece material grip device for a machine tool, characterized in that the G code input value of the machine tool is programmed and operated automatically.

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