KR19980059374A - Tool port fixture for machining center - Google Patents

Abstract

The present invention prevents the tool port from rotating due to its own weight when the power is turned off, thereby preventing the tool port from operating suddenly when the power is turned on, so that the reliability of the machine can be restored together with eliminating safety accident factors. The structure is such that the first cylinder is installed in the magazine frame constituting the machining center with the mass coupled to the rod end, and a part of the rear end of the tool port that rotates about the hinge axis is coupled to the mass of the machining center. An object of the present invention is to provide a tool port fixing device for a machining center equipped with a stopper function, which prevents the mass from being pushed by the rotating tool port by its own weight when the switch is turned off.

Description

Tool port fixture for machining center

The present invention relates to a tool port fixing device for a machining center, and in particular, by allowing the tool port to be positioned in the power off position, by preventing the tool port from operating suddenly when the power is turned on to prevent accidents The present invention relates to a tool port fixing device for a machining center which prevents and also prevents component damage caused by sudden operation.

In general, the tool port mounts and fixes the tool supplied through the change position and moves to the workpiece position to allow the tool to process the work.

In the prior art, a cylinder having a rod is installed perpendicular to a magazine frame, and a mass is coupled to the rod end to move up and down.

And the tool port is installed to be rotated on the front surface of the mass, wherein a portion of the tool port is inserted into the groove formed in the mass is installed to receive the action force.

Referring to the operation of the prior art described above is as follows.

When a new tool is first secured to the tool port while being supplied through the change position, the tool port is moved to the working position by the chain.

When the tool port moved as described above completes the machining work at the working position, the tool port is moved to the change position to perform a new work, thereby exchanging the tool.

At this time, when the operator turns off the power switch, the rod that advanced the mass loses the action force while the air supplied to the cylinder is cut off, which causes the tool port placed in a horizontal state to be rotated by its own weight and placed in a vertical state.

When the tool port is vertical, the advanced rod is reversed.

On the contrary, when the operator turns on the switch, the air is supplied to the cylinder to rapidly advance the rod which has lost the action force. At this time, the mass is rapidly advanced together to rotate the vertically positioned tool port about the hinge axis. Place it in a state.

In the above conventional technology, the rod is not restrained as the cylinder loses its function when the operator turns off the switch. As a result, when the switch is turned on, the rod suddenly operates and the tool port rises, causing a safety accident. At the same time, there is a problem that the reliability of the machine is reduced.

The present invention prevents the tool port from being rotated by its own weight when the operator turns off the power, thereby preventing the tool port from operating suddenly when the power is turned on so that the reliability of the machine can be restored with eliminating safety accident factors. The purpose is to make it possible.

According to the present invention for realizing this, a first cylinder is installed in a magazine frame constituting a machining center by coupling a mass to a rod end, and a part of the trailing edge of the tool port that rotates about a hinge axis is coupled to the mass. A stopper function is provided to prevent mass from being pushed by the rotating tool port by its own weight when the center power switch is turned off.

1 is a front view of a tool magazine showing an embodiment of the present invention.

2 is a side view showing an embodiment of the present invention.

3 is a front view showing an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2: Wheel 4: Chain 6: Tool Port

7: Change position 8: Hinge axis 9: Tool magazine

Psa 10: Am 11: Am 12: Roller

14: Mass 16: Home 18: Slider

20: first cylinder 22: first hole 24: second hole

26: magazine frame 28, 42: rod 30: guide plate

32: Slot 34: Block 36: Stopper

38: third hole 40: second cylinder 44: piston

46: Spring

In the present invention, the chain 4 is coupled to the rotating wheel 2 as shown in FIG. 1, and the tool port 6, which is fixedly coupled to the tool 4, is spaced at the same interval. A plurality of change positions 7 are installed in the tool magazine 9 for guiding supply or withdrawal of the tool to the tool port 6, and change the tool at the inlet of the change position 7 Arm 11 is installed.

The tool port 6 is coupled to the hinge shaft 8 so as to be able to rotate vertically or horizontally in the chain 4 as shown in FIG. 2, and the bar 10 protrudes at the rear of the tool port 6. ) To form a roller 12, which serves as a support, is rotatably coupled to the distal end.

And the mass 14 is located at the rear of the tool port 6, the groove (16) is formed on the front of the mass (14) to move up and down while inserting the roller (12), the rear of the slider ( 18 is coupled to rotate.

The first cylinder 20 providing upper and lower working force to the upper end of the mass 14 forms first and second holes 22 and 24 in the upper and lower portions, respectively, for guiding supply of compressed air, and the magazine plate 26. The lower end of the rod 28 provided in the first cylinder 20 is fixedly coupled to the upper end of the mass 14.

On the back of the mass 14, the guide plate 30 is placed in close contact with and fixedly installed. The slot 32 is formed in the guide plate 30, and the slider 18 is included, and the mass of the mass 14 It is formed along the moving direction.

In addition, the block 34 is coupled to the front surface of the lower end of the guide plate 30, the stopper 36 for limiting the downward range of the mass 14 is fixed to the upper end of the block (34).

On the other hand, when the current supplied to the machining center is turned off, a stopper function is provided on one side of the mass 14 to prevent the tool port 6 from rotating and raising the mass 14 due to its own weight.

This stopper function structure comprises a second cylinder 40 having a third hole 38 adapted to guide the flow of compressed air to be supplied, as shown in FIG. The mass 14 is installed away from one side.

In the second cylinder 40, a piston 44 having a rod 42 disposed on the front surface of the second cylinder 40 to prevent upward movement of the mass 14 is installed, and when the current is turned off, the piston 44 is moved forward. Spring 46 provides a reaction force so that the coupling is made, one end is in contact with the cover 48 is installed on the rear end of the second cylinder (40).

Referring to the operation of the present invention configured as described above are as follows.

First, when the power is turned on, the compressed air is supplied to the first hole 22 of the first cylinder 20 to advance the rod 28, and at the same time, the mass 14 moves downward by the rod 28, but the stopper (36) The position is fixed while touching the upper end.

Therefore, the roller 12 inserted into the groove 16 of the mass 14 is positioned in a fixed state, so that the tool port 6 is maintained in a horizontal state.

In addition, when the power is turned on and compressed air is supplied to the third hole 38 of the second cylinder 40, the piston 44 is reversed. In this case, the piston 44 compresses the spring 46 and moves backward. At the same time, the rod 42 is positioned away from the mass 14.

When the wheel 2 is rotated while the adjustment work for the work is completed as described above, the tool port 6 is transferred to the tool change position along the moving chain 4 to become a position where tool change is possible.

On the other hand, in order to supply a new tool for the next working process, first, the compressed air is supplied to the second hole 24 of the first cylinder 20 to upwardly lower the rod 28, wherein the mass 14 The slider 18 coupled to the rear surface moves along the slot 32 formed in the guide plate 30.

At the same time, the rollers 12 inserted into the grooves 16 of the mass 14 are raised together so that the tool port 6 pivots about the hinge axis 8, which causes the tool port 6 to It will be in a vertical state.

At this time, since the compressed air is continuously supplied to the second cylinder 40, the piston 44 is positioned in a backward state, and thus the mass 14 is not restrained when the mass 14 is raised.

When the above operation is completed, the arm 11 exchanges the tool of the tool port 6 rotated at the change position 7 and the tool of the finished spindle.

When the tool replacement operation is completed, compressed air is supplied to the first hole 22 of the first cylinder 20 to lower the rod 28 again.

Accordingly, the mass 14 is slid in close contact with the front surface of the guide plate 30, and at the same time, the slider 18 is moved along the slot 32, where the position of the mass 14 is a stopper 36. The direction and position of the tool coupled to the tool port 6 is determined as being limited by.

As described above, when the mass 14 moves downward, the rollers 12 inserted into the grooves 16 move downward to rotate the tool port 6 about the hinge axis 8 so as to be positioned in a horizontal state.

As the compressed air is continuously supplied to the second cylinder 40 in the process of operating as described above, the movement of the mass 14 is not restricted.

On the other hand, when the machining operation is finished and the operator turns off the power of the machine, the supply of compressed air is in a state of being stopped.

In this state, the action of the rod 28 provided in the first cylinder 20 is free, and at the same time, the compressed air supplied to the second cylinder 40 is also blocked, so that the action of the piston 44 is free. do.

At this time, the compressed air supplied through the third hole 38 provided in the second cylinder 40 is also blocked, so that the piston 44 is advanced by the repulsive force of the spring 46 that has been compressed. The tip is positioned at the upper end of the mass 14.

Therefore, the tool port 6 located in a horizontal state is intended to cause the roller 12 to raise the mass 14 while rotating about the hinge axis 8 by the weight of the tool to which it is engaged. Since the tip of the rod 42 of the piston 44 coupled to the 40 is located at the upper end of the mass 14, the rotation of the tool port 6 is prevented so that it is in a horizontal state.

The present invention prevents the tool port from being rotated by its own weight when the operator turns off the power, so that the tool port is in the correct position when the power is turned on, and thus safety and reliability are restored.

Claims (3)

The first cylinder 20 is installed in the magazine frame 9 constituting the machining center with the mass 14 coupled to the tip of the rod 28, and the mass 14 rotates about the hinge axis 8. A stopper function adapted to prevent the mass 14 from being pushed by the tool port 6 rotating by its own weight when the rear end of the tool port 6 is engaged, when the power switch of the machining center is turned off. The tool port fixing device for the machining center is installed on one side of the mass (14). 2. The stopper function according to claim 1, wherein the stopper function constitutes a second cylinder (40) having a third hole (38) through which compressed air can be supplied, and the mass (14) in the second cylinder (40). A piston 44 having a rod 42 for preventing the rising of the piston is coupled, and when the power of the machine is turned off to the piston 44, and the supply of compressed air is stopped, the tip of the rod 42 is positioned above the mass 14. Tool port fixture for machining centers with a spring 46 providing a reaction force to be located in the center. The method of claim 1, wherein the slider (18) prevents flow to the mass (14) is pivotally coupled, and the guide plate (30) forming the slot (32) on one surface of the mass (14) is in close contact. A tool port fixing device for a machining center in contact with, but installed while having the slider (18) in the slot (32).