KR20160042519A - Machine tool - Google Patents

Abstract

The present invention provides a bed comprising: a bed on which a rail is disposed along a longitudinal direction; A chuck disposed on the bed and clamping the base material; A fixed unit movably disposed along the rail, for fixing the base material clamped to the chuck; A sensing sensor unit for sensing a position of the fixed unit; A conveyance belt that is detachably coupled to the fixed unit and moves along a ball screw disposed in the longitudinal direction of the bed; And a control unit communicating with the detection sensor unit or the transfer table to transfer the fixed unit along the rail by controlling the transfer table.

Description

Machine tool {MACHINE TOOL}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a machine tool capable of controlling movement of a shock absorber or a pressure-

A machine tool is a machine that is used for machining metal or nonmetal materials (hereinafter referred to as "base material") into shapes and dimensions by using various cutting or non-cutting machining methods, or for adding more precise machining.

1 is a partial perspective view of a conventional machine tool.

1, a machine tool comprises a chuck 10 for clamping a base material 1, a discharge port 30 and a tailstock 40 which are conveyed along a guide surface 25 disposed on the bed 20, And a transfer belt 60 which is positioned above the turret 50 for tool change and is moved by the ball screw 65 along the longitudinal direction of the base material 1. [

When the length of the base material 1 is relatively short, the base material 1 can be processed by a tool (not shown) without using the discharge stopper 30 or the tailstock 40. However, The free end of the base material 1 may take a moment to be deformed due to the load of the base material 1 so that deformation of the base material 1 can be prevented by the dustproofing mouth 30 or the tailstock 40 .

Further, even when the length of the base material 1 is relatively short, the tailstock 40 or the discharge port 30 may be used to prevent machining errors due to vibration generated during processing.

The damper 30 is arranged to clamp the base material 1 by clamping the outer circumferential surface of the base material 1. The damper 40 presses the center of the free end of the base material 1, (1).

However, movement of the tailstock 40 or the discharge port 30 of the conventional machine tool is performed by manually transferring the transfer stand 60 to the tailstock 40 or the discharge port 30, 40 or the discharge port 30 is manually connected to the transfer table 60 and the transfer table 60 is manually transferred to the desired position again, so that the operation time is increased and the productivity thereof is also affected.

Further, it is possible to transfer the discharge port 30 or the tail stock 40 using a separate servo motor or a hydraulic cylinder, but this may be caused by an increase in the volume of the machine tool or an increase in the price due to the installation of a separate servo motor or hydraulic cylinder There is a disadvantage in that there is a problem that processing of a power line or a cable in a machining area or a chip is not smoothly discharged during machining.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a machine tool capable of automatically transferring an abutment or a tailstock that supports a base material without any separate actuator.

It is still another object of the present invention to provide a machine tool capable of quickly transferring a discharge port or a tailstock so as to meet individual processing steps regardless of the kind of the base material.

According to an aspect of the present invention, there is provided a bed comprising: a bed on which a guide surface is disposed along a longitudinal direction; A chuck disposed on the bed and clamping the base material; A fixing unit movably disposed along the guide surface, for fixing the base material clamped to the chuck; A sensing sensor unit for sensing a position of the fixed unit; A conveyance belt that is detachably coupled to the fixed unit and moves along a ball screw disposed in the longitudinal direction of the bed; And a control unit communicating with the detection sensor unit or the transfer table to transfer the fixed unit along the guide surface by controlling the transfer table.

In addition, the fixing unit may be a discharge port for clamping the outer circumferential surface of the base material clamped to the chuck, or a pressure tap for pressing the end surface of the base material clamped to the chuck.

The detection sensor unit may include a displacement sensor disposed on a lower side of the fixed unit guided by the guide surface and a linear position sensor disposed on the guide surface to detect the displacement of the position sensor so as to correspond to the displacement sensor .

The fixing unit may further include a traction bar protruding from the fixing unit, and the conveying table may further include a bar holder having a groove corresponding to the traction bar.

The control unit may further include a memory unit for inputting information on the length, shape, and material of the base material to be clamped on the chuck, and a movement limit range of the fixed unit according to the base material. So that the fixed unit can be transferred to the predetermined position by the transfer belt.

The present invention can accurately and quickly move the fixed unit even without a separate drive unit by sensing the positional information of the fixed unit of the base material such as a dust-proofing hole or a tailstock and controlling the transfer unit with the control unit.

Further, the present invention can improve the productivity due to the arrangement of the fastening unit quickly, and it is possible to achieve precise processing.

1 is a partial perspective view of a conventional machine tool;
2 is a schematic diagram of a machine tool module according to an embodiment of the present invention.
3 is a partial perspective view of a machine tool according to an embodiment of the present invention.
4 is a view showing a fastening unit between a tailstock and a conveyance belt according to an embodiment of the present invention.
5 is a view illustrating an anti-vibration structure and a tailstock in which position sensors are disposed according to an embodiment of the present invention;
6 shows a rail on which a linear position sensor is arranged according to an embodiment of the invention.
FIG. 7 is a flow chart for conveying an earth guard or a tailstock in a machine tool according to an embodiment of the present invention; FIG.

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

Unless defined otherwise, all terms used herein are the same as the generic meanings of the terms understood by those of ordinary skill in the art, and where the terms used herein contradict the general meaning of the term, they shall be as defined herein.

It is to be understood, however, that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

2 is a schematic view of a machine tool module according to an embodiment of the present invention.

2, the present invention can largely include a fixed unit 100, a sensing sensor unit 200, a conveyance table 300, and a control unit 400. The present invention may further include a bed 20, a turret 50, a ball screw 65, or a chuck 10.

Here, the fixing unit 100 is provided for firmly fixing the base material 1 from the load of the base material 1 itself or vibrations generated during processing, and the detection sensor unit 200 is provided to the fixing unit 100, And the conveyance table 300 is provided for conveying the fixed unit 100. The control unit 400 communicates with the sensing unit or the conveyance table 300 to detect the current position of the conveyance unit 300, The feeding range of the fixed unit 100 can be controlled by combining the stand 300 and the fixed unit 100 and controlling the movement of the conveyance stand 300. [

The control unit 400 includes a memory unit for storing information on the base material 1, that is, information on the length, shape, and material of all the base materials 1 that can be clamped or clamped on the chuck 10 And the information of the base material 1 is stored so as to be added, deleted or changed.

The control unit 400 receives the information of the base material 1 and the current displacement of the fixed unit 100 from the detection sensor unit 200 and transfers the fixed unit 100 to a predetermined position, (300). ≪ / RTI >

The machine tool according to the present invention will be described in more detail as follows.

FIG. 3 is a partial perspective view of a machine tool according to an embodiment of the present invention, FIG. 4 is a view illustrating a fastening unit between a tailstock and a conveyance belt according to an embodiment of the present invention, and FIG. 6 is a view showing a rail on which a linear position sensor is disposed according to an embodiment of the present invention.

The bed 20 is provided with a guide surface 25 on the upper side thereof along the longitudinal direction thereof and can support the fixing unit 100 or the conveyance table 300.

The chuck 10 is disposed on the side of the bed 20 to clamp the base material 1 and can be firmly fixed to one side of the bed 20 by bolts or the like.

The fixing unit 100 may be disposed to be movable along the guide surface 25 and may be provided for fixing the clamped base material 1 to the chuck 10. [ Specifically, the fixing unit 100 fixes the base material 1 to prevent deformation due to the load of the base material 1 itself clamped to the chuck 10, or deformation due to vibration generated during processing, A damper 110 for clamping the outer circumferential surface of the base material 1 clamped to the chuck 10 or a clamping bar 120 for pressing the cross section of the base material 1 clamped to the chuck 10 .

Here, the fixing force of the base material 1 of the discharge guard 110 or the tail pad 120 can be realized using a servo motor or a hydraulic cylinder.

This fixed unit 100 can be moved by the movement of the conveying table 300. [ 4, the tailstock 120 may further include a traction bar 130 that is moved back and forth by a hydraulic pressure distribution of the servo motor or the hydraulic cylinder. The feed belt 300 may include a traction bar 130 And a bar holder 330 on which a groove corresponding to the bar holder 330 is formed.

That is, when hydraulic pressure is applied to the traction bar 130 by the controller 400, the traction bar 130 protrudes to the outside of the tailstock 120, and one end of the protruded traction bar 130 And is mounted on the bar holder 330. With this coupling, when the conveying table 300 is moved by the rotation of the ball screw 65 by the control unit 400, the tail stock 120 can also be moved.

Although not shown, the mechanism of the traction bar 130 and the bar holder 330 may be equally applied to the discharge port 110 of the fixed unit 100.

5 and 6, the detection sensor unit 200 detects the position of the discharge port 110 or the tail pad 120, which is the fixed unit 100, by means of the guide surface 25, A linear position sensor 220 disposed on the guide surface 25 so as to correspond to the displacement sensor 210 and sensing the displacement of the position sensor 220; ).

Instead of this structure, the guide surface 25 and the lower portion of the fixed unit 100 may be engaged with each other in a rack gear manner so that the fixed unit 100 can be moved. On the guide surface 25, The position of the fixed unit 100 may be sensed by a sensor capable of performing a resolution.

A turret 50 having a plurality of tools disposed thereon may be fixed on the conveyance table 300. The turret 50 may be provided with an appropriate tool for machining the base material 1 on a spindle can do.

The operation of the machine tool according to the embodiment of the present invention will now be described.

FIG. 7 is a flow chart for conveying an earth guard or a tail pad in a machine tool according to an embodiment of the present invention.

Once the operation of the machine tool according to the embodiment of the present invention is started, information of the base material 1 to be clamped to the chuck 10 is grasped (S100). With this information, the control unit 400 can obtain information on the length of the base material 1, such as whether warpage will occur according to its own load, or information on whether it will affect machining depending on the degree of vibration generation during machining It is possible to determine whether the fixed unit 100 is driven or not.

When the clamping of the base material 1 clamped to the chuck 10 is required, the conveyance range of the fixed unit 100 is set according to the information of the base material 1 (S200). For example, if the length of the base material 1 clamped and exposed to the chuck 10 is 1 m and the working range of the base material 1 is 0.7 m, 100), which is an initial position, which is not the current position, is set to 0.3 m.

Thereafter, the current position of the fixed unit 100 is detected through the detection sensor unit 200 (S300), and the current position value is transmitted to the control unit 400. [ Of course, this step can precede the immediately preceding step. If this is the case, the conveyance range of the fixed unit 100 is set to 0.3 m at the current position of the fixed unit 100.

Thereafter, the control unit 400 calculates a transfer position (S400). Here, the transfer position calculation is an optimum fixed position value depending on the portion of the base material 1 to be processed at present. If the fixed unit 100 fixes the free end of the base material 1 when the base material 1 has a long length and is deformed due to vibration or self load at the time of processing the middle part of the base material 1, This is because the quality may deteriorate. This transfer position can be calculated in consideration of the current position, the length information of the base material 1, the current machining position and the transfer limit range thereof.

By this operation, the fixed unit 100 can be quickly transported (S500). The control unit 400 rotates the ball screw 65 in the forward and reverse directions to displace the conveyance platform 300 to a position corresponding to the fixed unit 100 And when the conveyance platform 300 approaches the fixed unit 100, the traction bar 130 and the bar holder 330 are coupled together and the ball screw 65 is controlled again to move the conveyance platform 300, The fixed unit 100 can be transported.

Thereafter, the detection unit 200 detects whether there is an error in the position of the fixed unit 100, and checks it (S600).

In this case, the conveyance platform 300 releases the engagement between the conveyance platform 300 and the fixed unit 100, and the conveyance platform 300 is moved to the predetermined position, And the fixed unit 100 fixes the base material 1 (S700).

If the right edge of the fixed unit 100 detected by the detection sensor unit 200 is not positioned at a predetermined position, the machine tool informs the operator of an alarm (sound or light) Can be restarted from the current position detection step.

Since the machine tool according to the embodiment of the present invention can more accurately fix the position of the base material 1 in accordance with the type of the base material 1 when machining the base material 1, There is an advantage that the productivity and processability can be improved without the transfer device of the unit 100. [

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined by the appended claims. Range and its equivalent range.

100: Fixing unit 110:
120: tailstock 200: detection sensor unit
210: displacement sensor 220: linear position sensor
300: conveying stand 330: bar holder
400:

Claims (5)

A bed 20 on the upper side in which the guide surface 25 is disposed along the longitudinal direction;
A chuck 10 disposed on the side of the bed 20 for clamping the base material 1;
A fixing unit (100) movably disposed along the guide surface (25) for fixing the base material (1) clamped to the chuck (10);
A sensing sensor unit 200 sensing the position of the fixed unit 100;
A conveyance belt 300 detachably fastened to the fixed unit 100 and moving along a ball screw 65 arranged in the longitudinal direction of the bed 20; And
And a controller 400 communicating with the detection sensor unit 200 or the transfer table 300 to transfer the fixed unit 100 along the guide surface 25 by controlling the transfer table 300. [ machine.
The method according to claim 1,
The fixing unit 100 is provided with a discharge port 110 for clamping the outer circumferential surface of the base material 1 clamped to the chuck 10 or a tension pad 110 for pressing the end surface of the base material 1 clamped to the chuck 10 120).
The method according to claim 1,
The detection sensor unit 200 includes a displacement sensor 210 disposed on a lower side of the fixed unit 100 and guided by the guide surface 25 and the guide surface 25 corresponding to the displacement sensor 210. [ And a linear position sensor (220) disposed at the position sensor and sensing a displacement of the position sensor.
The method according to claim 1,
The fixing unit 100 further includes a traction bar 130. The conveyance table 300 further includes a bar holder 330 having a groove corresponding to the traction bar 130, .
The method according to claim 1,
The control unit (400)
Further comprising a memory unit to which information on the length, shape, and material of the base material (1) clamped to the chuck (10) and the movement limit range of the fixed unit (100)
The machine tool according to any one of claims 1 to 3, wherein the detection unit (200) receives the current displacement of the fixed unit (100) and transfers the fixed unit (100)

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