JP2005001053A - Bar feeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bar feeding apparatus which can prevent the jamming of chips in tubular workpieces. <P>SOLUTION: The bar feeding apparatus holds a rear end portion of a tubular bar material W by means of a front end portion of a feed rod 10, and moves the tubular bar material W in the forward and backward directions to a bar machine by moving the feed rod 10 back and forth with a driving means. The feed rod 10 is provided with a through hole 12, the front end of which communicates with the rear end of the inner bore Wh of the bar material W to be held. Further, a cutting fluid supplying means 14 for supplying cutting fluid into the through hole 12 of the feed rod 10 is provided such that the cutting fluid flows out from the front end portion of the tubular bar material W. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Industrial application fields]
The present invention relates to a bar material processing machine that moves a bar material back and forth with respect to a bar material processing machine using a feed arrow, and more specifically, a bar material that moves a tubular bar material back and forth with respect to a bar material processing machine. It relates to processing machines.
[0002]
[Prior art]
Conventionally, a bar feeder for feeding a bar to a bar processing machine such as an NC lathe is known. Generally, the bar feeder is a material shelf for holding a plurality of bars (new materials) to be supplied to the bar processing machine, a guide rail extending straight toward the bar processing machine, and a material A bar material take-out mechanism for taking out bar materials one by one from the shelf and supplying them to the guide rail, and for moving the bar material back and forth within the guide rail to feed the bar material back and forth to the bar material processing machine And a dart. Various parts are formed by processing the tip of the bar fed by the feed arrow with a bar processing machine.
There is no known document related to the present invention.
[0003]
[Problems to be solved by the invention]
The parts formed by the bar processing machine include tubular parts such as sleeves. In order to process the inner diameter of such a tubular part to a predetermined size, boring is performed, but at this time, a facet is clogged inside the tubular part, which hinders processing. Specifically, when the face is jammed, it cannot be processed at high speed or processed with high accuracy. In addition, this may cause the life of drills, taps, tools, etc. of the bar processing machine to be shortened. To prevent this, drilling is applied to the outside of the inner hole during frequent drilling to apply cutting oil during boring. Must be moved. Further, the chips stuck in the parts must be removed manually one by one after the processing is completed.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a bar feeder that can prevent a chip from being clogged in a tubular part.
[0005]
[Means for Solving the Problems]
The above object of the present invention is to hold the rear end portion of the tubular bar by the front end portion of the feed arrow, move the feed arrow back and forth by the driving means, and move the tubular bar to the bar processing machine. A bar feeder for moving back and forth, wherein the feed arrow has a front end formed with a through hole communicating with a rear end of an inner hole of the bar to be held, and the tubular bar This can be achieved by a bar feeder that has cutting oil supply means for supplying cutting oil into the through hole of the feed arrow so that the cutting oil flows out from the front end portion of the feed arrow.
[0006]
In the present invention, the cutting oil is supplied by the cutting oil supply means to the front end of the tubular rod to be processed through the through hole of the feed arrow. Since the cutting oil clogged in the tubular bar is pushed out when the cutting oil flows out from the front end of the bar, it is prevented that the cut is clogged into the inner hole of the tubular bar, and the bar It is possible to extend the life of the tool of the machining, precision machining, and bar processing machine.
[0007]
Further, in the embodiment of the present invention, the cutting oil supply means is controlled by the controller so as to supply cutting oil at least while the inner hole of the bar is processed by the bar processing machine. During the processing of the inner hole of the material, the inner hole of the bar can be processed satisfactorily.
[0008]
Furthermore, in another embodiment, the through hole extends along a longitudinal axis of the feed arrow, the cutting oil supply means includes an oil pump for supplying cutting oil, and a tip portion of the feed hole. A flexible tube connected to the rear end portion of the arrow and supplied with cutting oil by the oil pump to the rear end portion, and a pull back means for applying a tensile force to the tube backward to pull back the tube. The tube is pulled forward into the guide rail against the tensile force with the forward movement of the feed arrow advanced by the drive means, and the rear of the feed arrow As it moves, it is pulled back by the tensile force. According to the present embodiment, since the tube does not loosen in the guide rail, the feeding arrow can move smoothly back and forth.
[0009]
Furthermore, in another embodiment, the pull-back means has a reel for winding the tube, and the reel has a rotational force applying means for applying a rotational force in the direction of winding the tube. . According to the present embodiment, it is possible to always supply cutting oil to the feed arrow that moves back and forth through the tube, and pulls out the tube of the required length, so that the periphery of the device can be made clean, In addition, the entire apparatus can be reduced in size.
[0010]
Furthermore, in another embodiment, the tensile force applied to the tube by the pull-back means is smaller than the forward force applied to the feed arrow by the driving means and the gripping force of the finger chuck, and the tube does not loosen. So that the tube can be pulled back. Therefore, the feeding arrow can be smoothly advanced, the bar does not come out of the finger chuck, and the excess tube does not loosen, preventing the movement of the feeding arrow moving back and forth within the guide rail. Don't be.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, various embodiments of a bar feeder according to the present invention will be described with reference to the accompanying drawings. The bar feeder according to the present embodiment is used particularly for feeding a tubular bar to a bar processing machine.
[0012]
FIG. 1 is a side view of the bar feeder according to the present embodiment.
As shown in FIG. 1, the bar feeder 2 is installed adjacent to the rear of the bar processing apparatus 4. The bar feeder 2 is provided along the guide rail 8 on the side of the base 6, the guide rail 8 supported by the base 6 and extending straight toward the bar processing machine 4. In addition, a material shelf (not shown) for holding stock of the bar material (new material) W and a bar material take-out mechanism (not shown) for supplying the bar material W to the guide rail 8 one by one from the material shelf. And a feed arrow 10 whose front end is connected to the rear end of the bar W and is moved back and forth within the guide rail 8 by the driving means.
[0013]
The driving means for moving the feed arrow 10 back and forth has a structure similar to that of the conventional bar feeder 2 although not shown. Specifically, the driving means includes a pair of sprockets, one each provided on the side of the front end portion and the side of the rear end portion of the guide rail 8, and an endless chain wound around the sprocket. And a motor for rotationally driving one of the sprockets. The rotation direction and ON / OFF of the motor are controlled by the controller 16. The feed arrow 10 has a so-called “blade portion” extending outside the guide rail 8 at the rear end portion, and an endless chain is attached to the blade portion. The sprocket is rotationally driven by the motor, and the endless chain traveling thereby causes the feed arrow 10 to move back and forth in the guide rail 8 on the feed axis OO that coincides with the central axis of the main shaft of the bar processing machine 4. Moved.
[0014]
FIG. 2 shows a feed bar, a tubular bar W fed by the feed arrow, and a cutting oil flowing out from the front end of the tubular bar W in the bar feeder shown in FIG. It is a side view which shows a part of cutting oil supply means which supplies cutting oil. FIG. 3 is a longitudinal sectional view showing a connection state between the feeding arrow and the pipe member to be fed. FIG. 4 is a partially broken plan view showing the reel.
[0015]
As shown in FIGS. 2 and 3, the feed arrow 10 includes a finger chuck 18 for gripping the rear end portion of the bar W, a main body portion 20 that extends straight behind the finger chuck 18, and a finger chuck 18. Between the main body portions 20, there is a chuck joint 22 that rotatably connects the finger chuck 18 to the main body portion 20. The feed arrow 10 is formed with a through hole 12 that penetrates from the front end of the finger chuck 18 to the rear end of the main body 20. As can be seen from FIG. 3, the through-hole 12 has a rear end of the inner hole Wh of the bar W in a state where the tubular bar W to be fed to the bar processing machine 4 is gripped by the finger chuck 18. Communicate with. As shown in FIG. 2, the bar feeder 2 further supplies the cutting oil into the through hole 12 of the feed arrow 10 so that the cutting oil flows out from the front end portion of the tubular bar W. Supply means 14 is provided. The cutting oil supply means 14 has a tube 26 whose tip is connected to the rear end of the feed arrow 10 and a reel 30 that winds the tube 26.
[0016]
The cutting oil supply means 14 will be described in more detail with reference to FIG. 1 again. The cutting oil supply means 14 includes an oil tank 23 that stores cutting oil, and a cutting oil O stored in the oil tank 23. An oil pump 24 that feeds pressure, a flexible tube 26 to which cutting oil pumped by the oil pump 24 is supplied to the base end portion, and a rear end portion of the feed arrow 10 is connected to the tip end portion; A conduit 29 that extends between the base end portion of the tube 26 and the oil pump 24 and sends the cutting oil fed to the tube 26 to the tube 26, and a pull-back means 28 that pulls the tube 26 backward by applying a tensile force to the tube 26. And have. Note that the controller 16 controls the ON / OFF of the oil pump 24 and the hydraulic pressure of the cutting oil pumped by the oil pump 24.
[0017]
Next, the retracting means 28 will be described in detail with reference to FIG. The pull-back means 28 includes a reel 30 for winding the tube 26 and a spiral spring 32 as a rotational force applying means for applying a rotational force to the reel 30 in the direction of winding the tube 26. The reel 30 includes a central shaft 31 fixed to a housing (not shown) of the reel 30 and a cylindrical rotating body 33 that rotates around the central shaft 31. One end of the spiral spring 32 is attached to the housing of the reel 30, and the other end is attached to the rotating shaft of the reel 30, and is wound around the central axis 31 with respect to the rotating body 33 by the spiral spring 32. A rotational force in the direction of winding the tube 26 is applied. In the reel 30, a flow path 35 for connecting a pipe line 29 that connects the pump 24 and a base end of the tube 26 is formed. Specifically, the flow path 35 extends along the longitudinal axis of the central shaft 31 from the upstream end 35 a that opens to the end surface of the central shaft 31, and further extends in the radial direction of the rotating body 33. It terminates at the downstream end 35b that opens at this point. A downstream end 29 a of a pipe line 29 that connects the pump 24 is connected to an upstream end 35 a of the flow path 35, and a base end 26 a of the tube 26 is connected to a downstream end 35 b of the flow path 35.
[0018]
Referring again to FIG. 1, the reel 30 is provided above the rear end portion of the guide rail 8 in the present embodiment. Specifically, the reel 30 is provided at the rear end portion of the cover portion 34 surrounding the guide rail 8. It is provided on the upper surface. The distal end portion of the tube 26 wound around the reel 30 is connected to the rear end of the main body portion 20 of the feed arrow 10 in the guide rail 8. As shown in FIG. 2, between the reel 30 and the guide rail 8, a pair of pulleys 36 are provided as guide means for guiding the tube 26 to the rear end portion of the guide rail 8, which are arranged vertically. ing. The lower pulley 36 is located in the vicinity of the feeding axis OO behind the guide rail 8, and the upper pulley 36 is located above the lower pulley 36 and in the vicinity of the tube 26 fed out from the reel 30. ing. The tube 26 is fed backward from the reel 30, and the direction of the tube 26 is deflected downward by the upper pulley 36, and further, the direction is deflected toward the guide rail 8 by the lower pulley 36. In addition, the front-end | tip part of the tube 26 and the rear-end part of the feed arrow 10 are mutually connected by the well-known connection means so that cutting oil may not leak.
[0019]
The bar feeder 2 according to the present embodiment operates as follows.
In the initial state, the feed arrow 10 is located at the rear end of the guide rail 8. The tube 26 connected to the rear end portion of the feed arrow 10 is wound around the reel 30 by the spring force of the spiral spring 32 of the reel 30.
[0020]
Subsequently, one of the bars W placed on the material shelf is taken out by the bar take-out mechanism and supplied to the front of the feed arrow 10 in the guide rail 8. The motor is turned on by the controller 16, the sprocket rotates, and the feed arrow 10 is moved forward toward the bar W by the endless chain that travels. A stopper for preventing the movement of the bar W (not shown) is provided in front of the bar W. When the feed arrow 10 moves toward the bar W, the bar is moved by the feed arrow 10. The material W is pushed and moves forward. When the bar is brought into contact with the stopper and stopped, and the feed arrow 10 moves further forward, the rear end of the bar W is inserted into the finger chuck 18 and gripped. Subsequently, the stopper is released and the bar can be advanced.
[0021]
The tensile force applied to the tube 26 by the spiral spring 32 of the reel 30 is set to be smaller than the forward force applied to the bar W by the driving means (specifically, a motor). The applied rearward pulling force to the tube 26 is set smaller than the gripping force of the finger chuck 18 against the rear end portion of the bar W. Further, the pulling back force of the tube 26 is set to a force that can be pulled back so that the tube 26 does not loosen. Therefore, the advance of the feed arrow 10 is not hindered by the tensile force, and the finger chuck 18 is not pulled out from the bar W. Accordingly, when the feed arrow 10 is moved forward by a predetermined distance in the guide rail 8 by the driving means, the tube 26 is pulled out from the reel 30 by a length corresponding to the predetermined distance and pulled into the guide rail 8.
[0022]
The bar W is fed forward by the feed arrow 10, and the bar W is fed into the main shaft of the bar processing machine 4. When the tip of the bar W is gripped by the collet chuck 18, the bar processing is disclosed. At the same time, the controller 16 turns on the cutting oil supply means 14 (specifically, the oil pump 24). Thereby, the cutting oil in the oil tank 23 is supplied into the tube 26 through the pipe line 29, and further passes through the through hole 12 of the feed arrow 10 and in the inner hole Wh of the bar W. The cutting oil flows out from the front end of the bar W. The cutting oil is continuously flowed during the processing of the bar W. Thereby, when the boring machine 4 performs boring processing of the inner hole Wh of the bar W, the facet generated in the inner hole Wh is pushed out from the front end of the bar W by the cutting oil, and the bar It is discharged out of the material W.
[0023]
FIG. 5 shows a state where a fluid bearing is processed by a conventional bar processing machine 4. Moreover, FIG. 6 shows the state which is processing the fluid bearing by this Embodiment.
As shown in FIG. 5 and FIG. 6, the fluid bearing may require processing of the groove C inside by the tool T of the bar processing machine 4. In such a case, in the conventional bar feeder, as shown in FIG. 5, the facets P are easily clogged in the groove C, which hinders processing. On the other hand, as shown in FIG. 6, in the bar feeder 2 according to the present embodiment, the cutting oil O is supplied into the inner hole Wh of the bar W, so that the facet P is located outside the inner hole Wh. So that the bar W can be smoothly bored. The hydraulic pressure of the cutting oil O by the oil pump 24 is set to such an extent that the facet P can be pushed out of the inner hole Wh.
[0024]
The oil pump 24 is turned ON / OFF by the controller 16 and the cutting oil is controlled to be supplied into the inner hole at least while the inner hole of the bar is processed by the bar processing machine.
[0025]
When the processing of one bar W is completed, the feed arrow 10 is retracted in the guide rail 8 by the driving means in preparation for feeding the next bar W. Along with this, the reel 30 is rotated in the winding direction by the spiral spring 32, and the tube 26 having a length corresponding to the retreat distance of the feed arrow 10 is wound around the reel 30.
[0026]
In the bar supply device 2 according to the present embodiment, the cutting oil is supplied into the inner hole Wh of the bar W during the processing of the tubular bar W, so that the chips generated during boring are discharged. And will not interfere with processing. Therefore, the tubular bar W can be processed at a higher speed and with higher accuracy. Further, since the face is discharged by the cutting oil, the life of the drill, tap, bite, etc. of the bar processing machine 4 is not shortened by the face, and since the cutting oil exists at the processing site, The lifetime can be extended. In addition, as with conventional devices, during boring, it was necessary to move the inside of the inner hole Wh frequently in order to apply cutting oil to a drill or the like. Time can be shortened. Further, since the facet does not exist in the completed part, it is not necessary to manually remove the facet.
[0027]
Moreover, since the excess tube 26 is wound up by the reel 30, the whole apparatus can be reduced in size, and since the tube 26 is given a tensile force toward the rear, the tube 26 is loosened. In the guide rail 8, there is no hindrance to the forward and backward movement of the feed arrow 10, and the feed arrow 10 can be smoothly moved back and forth.
[0028]
The present invention is not limited to the above embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.
For example, in this embodiment, since the tube 26 is wound around the reel 30, it is advantageous in that the entire apparatus can be reduced in size. However, the tube 26 is not necessarily required to be wound around the reel 30, and the tube 26 is not necessarily wound. Any means for applying a rearward tensile force to the tube 26 may be used so that the 26 does not slack in the guide rail 8.
[0029]
Further, the reel 30 may have any structure that winds the tube 26 and applies a tensile force to the tube 26 in the rearward direction so that the tube 26 does not loosen in the guide rail 8.
[0030]
Furthermore, in the above-described embodiment, the through-hole 12 extending along the longitudinal axis is formed in the feed arrow 10, but the through-hole 12 is not necessarily formed along the longitudinal axis of the feed arrow 10. You don't have to. For example, one end of this hole opens toward the rear end of the inner hole Wh of the bar W to be held, and the other end opens on the side surface of the main body 20 where the feed arrow 10 does not rotate. Also good. In this case, the tip of the tube 26 is connected to the other end.
[0031]
Furthermore, in the said embodiment, although the feed arrow 10 is a thing of the structure which has the finger chuck 18 which hold | grips the outer surface of the rear-end part of the bar W in a front end, the feed arrow 10 is a thing of the bar W. Other types connected to each other in such a manner that the cutting oil does not leak from between the inner hole Wh may be used. For example, a structure in which a hole is formed in the rear end portion of the bar W and the tip end portion of the feed arrow 10 is inserted into the hole may be used.
[0032]
Further, the cutting oil may be supplied at least during the processing of the inner hole Wh of the bar W, but the cutting oil may be supplied at other times.
[0033]
Furthermore, the connection between the rear end portion of the bar W and the tip end portion of the feed arrow 10 and the connection between the rear end portion of the feed arrow 10 and the tip end portion of the tube 26 do not leak the cutting oil flowing therethrough. It is preferable to be connected in a liquid-tight state. However, if a sufficient hydraulic pressure is obtained to push the cutting element into the cutting oil flowing out from the tip of the bar W, the cutting oil is connected in a state in which the cutting oil leaks between them. May be.
[0034]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, about the tubular components, the bar feeder which can prevent a facet from clogging can be provided.
[Brief description of the drawings]
FIG. 1 is a side view of a bar feeder according to the present embodiment.
FIG. 2 shows a feed oil, a tubular rod fed by the feed arrow, and a cutting oil so that the cutting oil flows out from the front end of the tubular rod of the bar feeder shown in FIG. It is a side view which shows a part of cutting oil supply means which supplies.
FIG. 3 is a longitudinal sectional view showing a connection state between a feeding arrow and a pipe member to be fed.
FIG. 4 is a partially broken plan view showing a reel portion.
FIG. 5 shows a state where a fluid bearing is processed by a conventional bar processing machine.
FIG. 6 shows a state where a fluid bearing is processed by the bar processing machine according to the present embodiment.
[Explanation of symbols]
2 Bar material processing machine 10 Feeding arrow 12 Through hole 14 Cutting oil supply means 18 Finger chuck 24 Oil pump 26 Tube 28 Retraction means 30 Reel 32 Spiral spring (rotation force applying means)
W Bar material Wh Inner hole O Cutting oil

Claims (5)

Bar material supply that holds the rear end portion of the tubular bar by the front end of the feed arrow, moves the feed arrow back and forth by the driving means, and moves the tubular bar back and forth with respect to the bar processing machine Machine,
The feed arrow is formed with a through hole that communicates with the rear end of the inner hole of the rod that is held at the front end,
Furthermore, it has a cutting oil supply means which supplies cutting oil in the said through-hole of the said feed arrow so that cutting oil may flow out from the front-end part of the said tubular rod, The bar feeder characterized by the above-mentioned. . 2. The bar according to claim 1, wherein the cutting oil supply means is controlled by a controller so as to supply cutting oil at least while the inner hole of the bar is processed by the bar processing machine. Feeding machine. The through-hole extends along the longitudinal axis of the feed arrow, the cutting oil supply means is connected to an oil pump for supplying cutting oil, a tip portion is connected to a rear end portion of the feed arrow, and A flexible tube to which cutting oil is supplied to the base end portion by the oil pump, and pull-back means for applying a tensile force to the tube in a backward direction to pull back the tube, Along with the forward movement of the feed arrow advanced by the driving means, it is pulled forward into the guide rail against the tensile force, and as the backward movement of the feed arrow, it is pulled backward by the tensile force. The bar feeder according to claim 1, wherein the bar feeder is pulled back. The pull-back means has a reel for winding up the tube, and the reel has a rotational force applying means for applying a rotational force in a direction of winding the tube. 3. A bar feeder according to 3. The pulling force applied to the tube by the pulling means is smaller than the forward force applied to the feed arrow by the driving means and the gripping force of the finger chuck, and is large enough to pull the tube so that the tube does not loosen. The bar feeder according to any one of claims 2 to 4, characterized in that the bar feeder is set to a height.

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