KR101059946B1 - Push-Pull Round Bar Material Feeder - Google Patents

Abstract

The present invention relates to a push-pull round bar material supply apparatus, and more particularly, in an apparatus for automatically supplying a round bar-shaped material to a main shaft of a CNC lathe, which is installed on one side of the main shaft and moves while the material is guided. A base to be supplied with; Brake means movably installed along the base and fixed on the base; Push means for moving the upper portion of the brake means, for pushing the material to insert the material into the main shaft; And a pull means installed on the brake means and providing tension to the push means to tension the material. The pull means is processed in a tensioned state by the pull means. Because the material is processed in a tensioned state, vibration and noise are reduced, and the bending phenomenon of the material is significantly reduced, thereby improving processing accuracy and guaranteeing quality.

Round bar, material, supply, push, pull, chuck, lathe, CNC, holder, motor, thrust, solenoid, hydraulic

Description

Automatic bar feeding device of push-pull type

The present invention relates to a push-pull round bar material supply device, and more particularly, to a push-pull round bar material supply device which reduces bending or vibration of a material by controlling pushing or pulling of a round bar-shaped material on a CNC lathe. will be.

CNC lathes are machine tools that program the machining geometry, machining conditions, and movements of the workpiece and automatically process the material supplied based on them, even in the case of workpieces that require very high precision and complex machining processes. It is possible to maintain very high productivity by eliminating defects caused by mistakes.

In general CNC lathes, when machining a long annular material through the hollow shaft of the main shaft, the chuck of the main shaft opens at the end of one cycle, and then moves the material manually or automatically to the desired dimensions and proceeds to the next cycle.

By the way, the spindle movement type CNC lathe can automatically transfer the material by opening and closing the chuck and the forward and backward movement of the spindle after one cycle is completed. That is, after one cycle is finished, the chuck is unclamped to transfer the material, and in this state, the main shaft is reversed as much as the amount of material to be transferred. In this case, the material is pushed back by the chuck in the unclamp operation of the chuck. There is this. Because the chuck opens open like the material pushes out, the material can be pushed back. Therefore, a certain thrust is applied to prevent the material from being pushed back until the end of one cycle and the material transfer is completed.

As described above, when the push-pull round bar material supply device continuously supplying the main shaft while pushing the round bar material is laid on the CNC lathe, there is an advantage of being unmanned for a long time.

Therefore, various types of push-pull round bar material supply apparatuses have been developed. Referring to FIG. 1, a schematic operation process is as follows. 1 is a block diagram showing a schematic structure of a conventional push-pull round bar material supply apparatus.

An insertion groove into which a long table-shaped base 3 is provided on one side of the main shaft 2 mounted on the CNC lathe 1 and into which an annular material m may be inserted into the upper surface of the base 3 (not shown). ) Is formed and a rail (not shown) is formed on both sides of the insertion groove (not shown), and the slidable holder 4 is coupled to the rail (not shown). In addition, a motor 5 is installed on one side of the base 3, that is, the main shaft 2 side, and a wire 6 is wound around the motor 5 so that the wire 6 is wound by the operation of the motor 5. Can be. In addition, on the base 3 above the motor 5, a pulley 7 for rolling support is coupled to the wire 6 extending from the motor 5 to the holder 4. In this case, when the wire 6 is wound by the operation of the motor 5, the holder 4 is pulled toward the main shaft 2, whereby the holder 4 is seated in the insertion groove (not shown). The material m is pushed into the main shaft 2 by a predetermined length by pushing the material m.

Because of this structure, the chuck is unclamped at the end of one cycle of machining and the holder prevents the material from being pushed when the main shaft is retracted, and is subsequently pushed so that the material is advanced as long as necessary for the machining. The next machining cycle then continues.

By the way, in the structure as described above, if the diameter of the material is somewhat large, there is no problem, but if the diameter is very small (3 mm or less), the holder pushes the material like a stopper, so that one cycle ends and There is a risk of bending (buckling) as the material is pushed back by the movement.

In addition, due to the small diameter, vibrations (whirling) and noise are generated by the rotation of the material at the time of processing, which causes bending of the material, which ultimately leads to a decrease in processing accuracy.

The present invention has been made to solve the above problems is an object of the present invention by reducing the vibration and noise of the material by providing a tensile force to the material when machining the rod-shaped material on the spindle of the CNC lathe and the bending of the material It is to provide a push-pull round bar material supply to minimize.

The present invention for achieving the above object is in the apparatus for automatically supplying the rod-shaped material to the main shaft of the CNC lathe, which is installed on one side of the main shaft, the material is moved while being guided to be supplied to the main shaft Base; Brake means movably installed along the base and fixed on the base; Push means for moving the upper portion of the brake means, for pushing the material to insert the material into the main shaft; And pull means installed on the brake means and providing tension to the push means to tension the material. The pull means is characterized in that the material is processed in the tensioned state.

Preferably, the brake means is made of an electromagnet and sliding on the base, the base is made of a magnetic material, characterized in that the brake means can be fixed on the base by a magnetic force.

Preferably, the push means is coupled to the upper sliding means and the holder is rotatably coupled to the material on one side, the wire is coupled to the holder, installed on one side of the base and extends from the holder A pulley for supporting a wire and a motor provided below the pulley and wound on a wire supported by the pulley to move the holder to the main shaft side.

Preferably, the pull means is a solenoid fixedly coupled to the upper brake means and attracting the push means by a magnetic force.

Preferably, the spring is further provided between the push means and the solenoid.

Preferably, the constant pull means is characterized in that the hydraulic cylinder is fixedly coupled to the upper brake means and pulling the push means by hydraulic pressure.

The effect of the present invention by the configuration as described above is processed in the state in which the material is tensioned by the pull means during processing, vibration or noise is reduced and the bending phenomenon of the material is significantly reduced to improve the processing precision and guarantee the quality Can be.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The following description and the accompanying drawings are presented for the overall understanding of the present invention, and thus the technical scope of the present invention is not limited thereto. And a detailed description of known configurations and functions that may unnecessarily obscure the subject matter of the present invention will be omitted.

Figure 2 is a schematic configuration diagram of a push-pull round bar material supply device according to an embodiment of the present invention, Figure 3 is a perspective view showing the main part of the present invention shown in FIG.

As shown, the present invention may be composed of a base 10, a brake means 20, a push means 30, a pull means 40.

As shown in FIG. 3, the base 10 is installed adjacent to one side of the main shaft, and has a long table shape, and a guide groove 12 in which a material is inserted and seated thereon is formed.

A rail 14 is formed at both sides of the guide groove 12, and the brake means 20 to be described later is coupled to the rail 14 so as to be slidable.

Here, the base 10 or the rail 14 is preferably made of a magnetic material such as iron, which will be described in detail in the brake means 20 to be described later.

Next, the brake means 20 will be described.

The brake means 20 is mounted on the rail 14 of the base 10 to be slidably movable and at the same time, the brake means 20 can be fixed to stop and move on the rail 14.

The brake means 20 forms a flat plate shape as shown in the drawing, and a sliding groove 20a is formed in the center thereof to insert the holder 32 of the push means 30 to be slid. In addition, one side of the sliding groove 20a is formed with a locking jaw (20b) to allow the holder 32 to slide so as not to leave the front.

In the present invention, the brake means 20 is preferably an electromagnet 22. Therefore, when the electromagnet 22 is slid on the rail 14 and a power is supplied, the electromagnet 22 may be fixed by the rail 14 and the attraction force. That is, since the rail 14 is made of a magnetic material such as iron or steel, the brake means 20 is stopped by the magnetic force of the electromagnet 22.

Of course, as another embodiment, a friction fixing method is also possible. The rail 14 may be fixed after stopping by friction means such as a brake pad (not shown).

Next, the pushing means 30 will be described.

The push means 30 is a pusher (32) and consists of a holder 32, a wire 34, a pulley 36, a motor 38, as shown in Figure 2, the holder 32 ) Is inserted into the upper portion of the brake means 20, that is, the sliding groove 20a is slidably coupled, the wire 32 is fixedly extended to the holder 32, the wire 34 Is extended to the main shaft side, that is, one side of the base 10, that is, extends downward through the pulley 36 provided on the base 10 of the main shaft side.

The wire 34 extending from the pulley 36 is wound around the motor 38 installed below the base 10 and wound and unwound by the motor 38.

The holder 32 is a block shape as shown in Figure 3 is inserted into the guide groove 12 in the lower portion is connected to the material (m), the material (m) is rotatably coupled, both sides are the The sliding means 20 is inserted into the sliding groove 20a of the brake means 20. As will be described later, the material of the holder may also be a magnetic material.

Therefore, when the wire 34 is pulled by the operation of the motor 38, the holder 32 pushes the material m, and thus the material m can be supplied to the main shaft.

Next, the pull means 40 will be described.

The pull means 40 is coupled to an upper portion of the brake means 20 to apply a pull force to slide the holder 32 rearward while the brake means 20 is fixed on the rail 14. It is a structure which adds and tensions the raw material m.

Here, the embodiment of the pull means 40 may be a solenoid 42 for generating a magnetic force.

The solenoid 42 has a coil shape as described in the present invention so that a magnetic field is formed by flowing a current to the present invention in the present invention, by supplying a current to generate a magnetic force to pull the holder 32 of the magnetic body to the rear Do it.

In addition, a spring 44 may be further provided between the solenoid 42 and the holder 32. The holder 32 adjacent to the solenoid 42 by the spring 44 may be restored to its original position. Can be.

Another embodiment of the pull means 40 is shown in FIG. 4. 4 is a configuration diagram showing another embodiment of the present invention.

As the pull means 40 may use a hydraulic cylinder 46 as shown in FIG. The hydraulic cylinder 46 may pull or push the holder 32 by the action of a cylinder. Of course, the pneumatic cylinder as the pull means 40 will also be possible. In this case, the material of the holder 32 may not need to be a magnetic material.

Hereinafter, a brief description of the preferred operating process of the present invention.

When the material m is inserted into the guide groove 12 of the base 10 and one end of the material m is rotatably fixed to the holder 32 and the CNC is operated, the motor 38 as programmed. Is activated and the holder 32 pushes the material m toward the main shaft side by the wire 34 wound by the motor 38, and the brake means 20 also moves together.

When the material m is advanced by an appropriate length, the brake means 20 is stopped and fixed on the rail 14 by the operation of the electromagnet 22, which is the brake means 20.

At this time, the material (m) is supplied in the main shaft and fixed to the chuck, the material (m) also rotates while the main shaft is rotated so that the solenoid 42 or hydraulic cylinder 46, the pull means 40 is the holder 32 Pulling it backwards will tension the workpiece m while the holder 32 is slightly retracted.

Since the processing is performed in the state in which the material (m) is tensioned, vibration is reduced, noise is reduced, and bending of the material can be minimized.

As described above, the present invention is characterized by being capable of preventing the vibration and noise and the resulting bending by tensioning the material being processed, and the detailed protection scope of the present invention is only one embodiment as described in detail with reference to the accompanying drawings. Simple design changes, applications, etc. will be included within the scope of the present invention.

1 is a block diagram showing a schematic structure of a conventional push-pull round bar material supply device.

Figure 2 is a schematic configuration diagram of a push-pull round bar material supply apparatus according to an embodiment of the present invention.

3 is a perspective view showing the main part of the present invention shown in FIG.

4 is a block diagram showing another embodiment of the present invention.

<< Explanation of main parts of drawing >>

10: base 12: guide groove

14: rail

20: brake means 20a: sliding groove

20b: Jam Jaw 22: Electromagnet

30: push means 32: holder

34: wire 36: pulley

38: motor

40: pool means 42: solenoid

44: spring 46: hydraulic cylinder

m: material

Claims (6)

In the device for automatically supplying the rod-shaped material to the spindle of the CNC lathe, A base 10 installed at one side of the main shaft and allowing the material m to be guided and supplied to the main shaft; Brake means (20) installed to be movable along the base (10), can be fixed on the base (10); Push means (30) is installed so as to be movable above the brake means 20, and pushes the material (m) to insert the material (m) into the main shaft; And A pull means 40 installed on the brake means 20 and providing tension to the push means 30 to tension the material m; Push-pull round bar material supply device, characterized in that the material (m) is processed in a tensioned state by the pull means (40). The method of claim 1, The brake means 20 is made of an electromagnet 22 and sliding on the base 10 and the base 10 is made of a magnetic material, Push pull type round bar material supply, characterized in that the brake means (20) can be fixed on the base (10) by a magnetic force. The method of claim 1, The push means 30, A holder 32 coupled to the brake means 20 to be slid and rotatably coupled to one side of the material m, a wire 34 coupled to the holder 32, and the base 10 of the base 10. The pulley 36 is installed on one side and supports the wire 34 extending from the holder 32, and the wire 34 installed on the lower side of the pulley 36 and supported by the pulley 36 is wound up. Push-pull round bar material supply, characterized in that consisting of a motor (38) for moving the holder 32 to the main shaft side. The method of claim 1, The pull means 40, Push-type round bar material supply apparatus, characterized in that the solenoid (42) fixedly coupled to the brake means 20 and attracting the push means (30) by magnetic force. The method of claim 4, wherein Push-pull round bar material supply device, characterized in that the spring 44 is further provided between the push means (30) and the solenoid (42). The method of claim 1, Always pull means 40, Push-pull round bar material supply device, characterized in that the hydraulic cylinder 46 is fixedly coupled to the brake means (20) and attracting the push means (30) by hydraulic pressure.

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