JP3134196U - Lathe machine and loading device - Google Patents

Abstract

A lathe processing machine capable of shortening the time required for attaching and detaching a short workpiece and improving operating efficiency dramatically, and a loading device used for the processing machine.
In a lathe machine for processing a short workpiece gripped by a chuck, a supply bar for inserting a short workpiece from an insertion portion provided at the back of the chuck, and the supply bar. And a supply mechanism 226 for inserting the inside of the insertion portion 33. Then, the workpiece is inserted from the insertion portion 33 with the short workpiece positioned at the tip of the supply bar 220, the short workpiece is gripped by the chuck 30, and then the supply bar 220 is pulled back to the next short workpiece. The workpiece is positioned at the tip of the supply bar 220. After that, the workpiece 4 is inserted into the insertion portion 33 again to wait in the back of the chuck 30.
[Selection] Figure 1

Description

  The present invention relates to a loading device for attaching a workpiece to a chuck of an NC lathe processing machine body and a lathe machining device incorporating the device. More specifically, the present invention can reduce the time required for workpiece attachment and removal. It relates to a lathe machine.

  Generally, when a short workpiece (hereinafter simply referred to as “work”) is attached to a lathe, manual attachment or automatic attachment by a loader is performed.

  Each of these methods will be described. When a workpiece is manually attached, an operator first opens the door of the apparatus body and inserts the workpiece into the chuck. The workpiece is gripped by manually tightening the chuck, the door is closed, and the workpiece is turned. Then, open the door again and take out the work by hand.

  On the other hand, when mounting workpieces automatically using a loader, first, a plurality of workpieces are placed on the work chute, and the workpieces are taken out one by one from the tips. A loader equipped with a loader hand is generally used for taking out the workpiece. After the workpiece is taken out by the loader hand, the workpiece is moved to the front of the chuck, the direction of the workpiece is changed, and the workpiece is moved to the hollow portion of the chuck. Insert it. Then, the chuck is clamped by clamping the chuck, and the workpiece is taken out after processing.

  By the way, since all of these methods are to attach and detach the workpiece from the front of the chuck, it takes time to reciprocate. For example, the manual attaching / detaching process takes about 33 seconds per one including the machining process. In addition, in the attaching / detaching method using a loader that does not require opening and closing of the door, the lathe machine is the shortest type, and approximately 24 including the machining process. It takes seconds. For this reason, the operating efficiency of the lathe machine could not be improved.

  On the other hand, a lathe machine that pushes and processes a workpiece from the back of the chuck is conventionally known (Patent Document 2 and the like). This lathe processing machine is provided with a mounting table for mounting a plurality of long bars, and a supply mechanism for pushing the bars mounted on the mounting table from the back of the chuck. Thus, the bar is inserted from the back of the chuck, and its tip is pushed forward of the chuck. And in this lathe processing machine, the part exposed ahead of the chuck is processed with a blade and cut into a desired length.

However, since such a lathe machine is a machine that extrudes a long workpiece from behind and processes it, it cannot be applied to a short workpiece. For this reason, the short workpiece must still be attached and detached from the front of the chuck, and the operating rate could not be improved.
JP 2001-205536 A Japanese Patent Laid-Open No. 11-90703

  Therefore, the present invention has been made paying attention to the above-mentioned problems, and provides a lathe machine capable of shortening the loading time required when attaching and detaching a short workpiece and greatly improving the operation efficiency. For the purpose.

  That is, in order to solve the above-mentioned problem, the present invention provides a lathe machine for machining a workpiece having a hollow inner diameter portion, and a supply bar including an inner pressing portion for pressing from the inner diameter portion of the workpiece. The feeding bar is inserted in a state where the workpiece is gripped from the insertion portion of the inner tube provided in the back of the chuck, and the feeding bar is pulled back after the workpiece is gripped by the chuck. is there.

  In this way, it is not necessary to reciprocate the loader hand in front of the chuck as in the prior art, and the attachment / detachment time can be greatly shortened. And since the lathe machine which processes the elongate bar material which exists conventionally can be used as it is, a new lathe machine can be provided at low cost.

  Further, in such a device, an oil supply portion that supplies oil to the inside in the longitudinal direction along the axis is used, and a supply bar that discharges oil from a discharge hole provided in the tip portion is used.

  Preferably, a seal member that prevents oil from being removed when the supply bar is pulled back is provided in the insertion portion.

  In this way, it is possible to prevent oil from coming out of the inner pipe when the supply bar is pulled back, and to prevent chips from entering the inner pipe.

  Also, when supplying a workpiece, the supply bar is pulled back after the workpiece is gripped by the chuck, and the next workpiece is made to stand by behind the chuck in a state where the next workpiece is held at the tip of the supply bar. To do.

  Furthermore, in a loading device for supplying a workpiece to a processing machine main body for lathing the workpiece held by the chuck, a parts feeder for placing a plurality of workpieces, a pickup mechanism for taking out one workpiece from the parts feeder, and the pickup A supply bar that grips the workpiece taken out by the mechanism at the tip, and a supply mechanism that inserts the supply bar into the insertion portion of the interior pipe provided at the back of the chuck. The pickup mechanism detects the workpiece in the reverse direction. In this case, the work is gripped in the normal direction at the tip of the supply bar by reversing the work.

  According to the present invention, in a lathe machine for processing a workpiece having a hollow inner diameter portion on the inner side, a supply bar provided with an inner pressing portion that presses from the inner side of the inner diameter portion of the workpiece and a back of the chuck are provided. The supply bar is inserted in a state where the workpiece is gripped from the insertion portion of the inner pipe, and the supply bar is pulled back after the workpiece is gripped by the chuck. There is no need to reciprocate in front of the chuck, and the attachment / detachment time can be greatly shortened. In addition, since a lathe machine for processing a long bar existing in the past can be used as it is, a new lathe machine can be provided at low cost.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a lathe processing machine 1 according to the present embodiment, FIGS. 2 to 4 are diagrams showing an operation state of the loading device 2, and FIG. 5 is a diagram showing a state in which a workpiece 4 is mounted on the device main body 3. Is.

  The lathe processing machine 1 in this embodiment is for processing a short workpiece 4, a loading device 2 that takes out one workpiece 4 from a plurality of workpieces 4, and a workpiece 4 that is taken out by the loading device 2. And an apparatus main body 3 for processing. The lathe machine 1 itself has a configuration similar to that of a conventional machine body for processing a long bar, and includes a chuck 30 provided at a tip portion of a hollow interior pipe 32, and the chuck. A tool post 31 for cutting the workpiece 4 held by the tool 30 is provided. The tool post 31 is provided with a plurality of blades and cutting tools necessary for cutting, and the workpiece 4 is turned by appropriately selecting these blades and cutting tools. In this embodiment, a seal member 34 is detachably attached to the insertion portion 33 of the interior pipe 32. The seal member 34 prevents oil from coming out of the interior pipe 32. When a supply bar 220 (to be described later) is inserted into the interior pipe 32, the seal member 34 is retracted from the insertion portion 33 using a clamp cylinder 34a. When the supply bar 220 is pulled back from the pipe 32, the insertion bar 33 is attached using the clamp cylinder 34a. The clamp cylinder 34a causes the seal member 34 to be positioned at the insertion portion 33 by rotating the arm, and attaches the seal member 34 to the insertion portion 33 by pulling the rotation shaft. Further, the seal member 34 is provided with a hollow portion along the axial center. By supplying oil from the outside toward the interior pipe 32, oil is supplied to the interior pipe 32 and from the interior pipe 32. Prevent oil loss. Thereby, it is possible to prevent foreign matters such as chips from entering the interior pipe 32.

  The interior pipe 32 provided in the back of the chuck 30 in the apparatus main body 3 is used to insert a long supply bar 220, and is a linear hollow section from the insertion portion 33 of the interior pipe 32 to the opening of the chuck 30. Is configured.

  Next, the configuration of the loading apparatus 2 will be described in detail. The loading apparatus 2 takes out a part feeder 20 (see FIG. 3) for accumulating a plurality of works 4, and takes out the works 4 one by one from the parts feeder 20. A pickup mechanism 21 for holding the tip of the supply bar 220 and a loading mechanism 22 for inserting the workpiece 4 held by the supply bar 220 into the interior pipe 32 of the apparatus main body 3 and causing the chuck 30 to grip it. I have to prepare.

  As shown in FIG. 3, the parts feeder 20 accumulates the short workpieces 4 on the disc-shaped stacking table 200, and slides the workpiece 4 from the chute 201 attached to the stacking table 200. As shown in FIG. 4, workpieces 4 having hollow inner diameter portions 40 on the inner side are randomly accumulated on the stacking table 200. The chute 201 has an inclination of about 30 degrees, and the workpieces 4 are slid in a state of being aligned in a line along the inclination, and separated one by one by a stopper 202 provided at the tip portion thereof. The stopper 202 sequentially discharges the workpieces 4 one by one by alternately moving the two claws 203 shown in FIG. 1 up and down on the chute 201. Specifically, when the work 4 is discharged, the upstream claw 203 is brought into contact with the work 4 to stop the slide, and the downstream claw 203 is released to discharge the work 4.

  The pickup mechanism 21 delivers the workpiece 4 separated by the stopper 202 to the tip of the supply bar 220. The pickup mechanism 21 receives the discharged workpiece 4 and changes it to a horizontal state. Move horizontally. The parts feeder 20 is provided on the side of the supply bar 220, that is, in the downward direction of the paper surface in FIG. 3, and in the front-rear direction of the paper surface in FIG. 1, and moves the pickup mechanism 21 along this direction.

  The set part 210 for receiving the workpiece 4 has a receiving member 211 for holding the workpiece 4 discharged from the chute 201 (see FIGS. 2 and 3). The receiving member 211 has a groove in which the work 4 can be stored inside, and stores the work 4 along the groove, and holds the work 4 by bringing the tip of the work 4 into contact with the outer peripheral member 211a. To do. Two sensors are provided on the upper portion of the receiving member 211. One sensor A 212 a is provided at the center of the receiving member 211, and the other sensor B 212 b is provided at the corner of the receiving member 211. These two sensors A 212a and B 212b are used to confirm the presence or absence of the workpiece 4 and the direction of the workpiece 4. For example, when the sensor A 212a is ON and the sensor B 212b is OFF, the “work 4 in normal direction” is selected. If the sensor A 212a and the sensor B 212b are ON, it is determined that “the workpiece 4 has been stored in the reverse direction”. When the workpiece 4 is stored in the receiving member 211 in the reverse direction, the direction of the receiving member 211 is rotated by 180 degrees to change to a normal direction. When changing the direction of the workpiece 4, the receiving member 211 is rotated 180 degrees in the outer peripheral member 211 a by the motor 211 b provided below, and the inner diameter portion 40 of the workpiece 4 is positioned on the opening side of the receiving member 211. To be corrected.

  On the other hand, the angle changing mechanism 213 changes the inclination angle of the setting unit 210 and changes the angle of the setting unit 210 between about 30 degrees and the horizontal angle. When changing the angle of the set unit 210, the pin of the angle change cylinder is protruded to make the set unit 210 horizontal, and conversely, by pulling the pin of the angle change cylinder, the set unit 210 is made horizontal. Put it in a state.

  The set unit 210 reciprocating cylinder 214 is a unit that slides the set unit 210 and the angle changing mechanism 213 together in the horizontal direction, and between the parts feeder 20 and the front end side of the supply bar 220 in FIG. Slide. In FIG. 1, the angle changing mechanism 213 slides along the front-rear direction of the paper.

  The set reciprocating cylinder 214 is provided with a set abnormality detecting unit 215. The set abnormality detection unit 215 detects that the workpiece 4 has not been inserted into the supply bar 220, and includes a guide member 216 (see FIG. 2) sandwiching the set unit reciprocating cylinder 214, and a front side of the guide member 216. The proximity switch 217 is provided, and the proximity switch 217 is turned on by strongly pressing the proximity switch 217 toward the moving direction of the supply bar 220. Normally, the proximity switch 217 is lightly pressed, and the proximity switch 217 is operated when the tip of the supply bar 220 is not inserted into the receiving member 211 of the workpiece 4. As a case where the workpiece 4 is not inserted into the supply bar 220, for example, a case where a workpiece having no inner diameter portion 40 is inserted may be considered.

  The loading mechanism 22 inserts the workpiece 4 taken out by the pickup mechanism 21 from the back of the chuck 30, and supplies the supply bar 220 for holding the workpiece 4 on the tip side, and the supply bar 220 of the interior pipe 32. And a supply mechanism 226 for insertion from the insertion portion 33.

  The supply bar 220 is constituted by a long member having a slightly smaller diameter than the interior pipe 32 of the apparatus main body 3. As shown in FIG. 4, the inner diameter portion 40 of the work 4 is pressed from the inside to the tip thereof. An inner pressing portion 221 is provided. The inner pressing portion 221 is slightly tapered so as to gradually decrease in diameter toward the distal end side, and when inserted into the inner diameter portion 40 of the workpiece 4, the inner pressing portion 221 presses the workpiece 4 from the inside by elasticity. The groove part 222 is provided so that it can do. When the inner pressing portion 221 is inserted into the inner diameter portion 40 of the work 4, a pressing force is gradually applied from the inner side by the tapered surface, and elasticity is imparted from the inner side by the groove portion 222 provided on the inner side. An oil supply part 223 for supplying oil is provided on the inner side in the longitudinal direction along the axis of the supply bar 220. The oil supply unit 223 supplies oil from the rear end portion of the supply bar 220 and discharges oil from a minute discharge hole 224 provided at the front end portion. The oil is supplied to the interior pipe 32 by the discharged oil. Supply. This oil is supplied when the supply bar 220 is inserted, and is stopped when the supply bar 220 is removed from the interior pipe 32.

  As shown in FIG. 1, the supply bar 220 configured as described above is held by a holder 225 and inserted into the interior pipe 32 of the apparatus main body 3 via the supply mechanism 226. The supply mechanism 226 includes a timing belt and a servo motor. The supply belt 220 is moved by fixing the lower end portion of the holder 225 to the timing belt and placing the holder 225 on the slide rail. Let A stopper 229 is provided on the front side of the supply mechanism 226, and the holder 225 and the stopper 229 are brought into contact with each other with the tip of the supply bar 220 positioned in the opening of the chuck 30.

  Next, an operation state when the short workpiece 4 is machined using the lathe machine 1 configured as described above will be described.

  First, a plurality of workpieces 4 are first stacked on the stacking table 200, and the workpieces 4 are laid out in a row and slid by the inclination of the chute 201. When the stopper 202 is released in this state, one work 4 is taken out, and the work 4 is stored in the receiving member 211 of the set unit 210 provided in front of the work 4 as shown in FIG. At this time, when the normal storage state is detected by the sensor A 212a and the sensor B 212b, the angle changing mechanism 213 is driven to bring the set unit 210 into a horizontal state, and the set unit reciprocating cylinder 214 is driven to Move to the tip of supply bar 220. On the other hand, when the storage state in the reverse direction is detected, the receiving member 211 is reversed 180 degrees, and thereafter, the angle change and the horizontal movement are similarly performed.

  When the workpiece 4 is positioned at the tip of the supply bar 220 in this manner, the supply bar 220 is advanced as shown in FIG. 6A, and the divided inner pressing portion 221 is moved to the inner diameter portion 40 of the workpiece 4. To insert. At this time, since the tip end portion is tapered and the groove portion 222 is provided, the inner pressing portion 221 can be inserted while being pressed to some extent. Thereafter, the supply bar 220 is returned in the reverse direction, the workpiece 4 is taken out from the set unit 210 (FIG. 6B), and the set unit 210 is moved to the parts feeder 20 so as not to obstruct the movement of the supply bar 220 in the forward direction. Move to the front.

  Then, as shown in FIG. 7C, the supply bar 220 is greatly advanced in a state where the seal member 34 is retracted from the insertion portion 33, and the workpiece 4 is inserted into the insertion portion 33 of the interior pipe 32 in the apparatus main body 3. To do. Then, the movement of the supply bar 220 is stopped when the holder 225 and the stopper 229 are brought into contact with each other. At this time, the workpiece 4 held at the tip of the supply bar 220 is positioned inside the opening of the chuck 30, and the workpiece 4 is gripped by tightening the chuck 30 here. Further, when the supply bar 220 is inserted in this way, oil is supplied from the oil supply part 223 of the supply bar 220, oil is discharged from the discharge hole 224, and oil is supplied from the inside of the chuck 30.

  After gripping the workpiece 4 with the chuck 30 in this way, this time, the supply bar 220 is moved in the opposite direction, and the supply bar 220 is returned to the initial position (FIG. 7D). At this time, the seal member 34 evacuated from the insertion portion 33 is attached to the insertion portion 33 again to prevent oil from being removed from the interior pipe 32. At the same time, the next work 4 is taken out by the pickup mechanism 21 that has been withdrawn from the moving direction of the supply bar 220 and is moved to the tip position of the supply bar 220 by changing the angle of the setting unit 210 and moving horizontally. . Then, the supply bar 220 is repeatedly advanced and retracted (FIGS. 8E and 8F), and the work 4 is taken out from the set portion 210 and again moved forward to be inserted into the interior pipe 32.

  Then, this time, the next workpiece 4 is made to wait on the rear side of the previous workpiece 4 (FIG. 9G), and the gripping state of the chuck 30 is loosened when the processing of the previous workpiece 4 is finished. The workpiece 4 is taken out by the sub-chuck that does not (FIG. 9 (h)).

  Thereafter, in the same manner, the next workpiece 4 is taken out from the parts feeder 20 during the processing of the previous workpiece 4 and is put on standby at the rear portion of the chuck 30.

  According to the configuration as described above, it is possible to eliminate waste of time for reciprocating the loader hand in front of the chuck 30 as in the prior art, and it is possible to greatly improve the operating efficiency of the apparatus. Moreover, since the lathe machine 1 which processes the long bar material which exists conventionally can be used as it is, the new lathe machine 1 can be provided at low cost.

  Further, in the above embodiment, since the seal member 34 is detachably attached to the insertion portion 33, oil can be prevented from escaping from the interior pipe 32 when the supply bar 220 is pulled back. It becomes possible to prevent chips and the like from being mixed into the tube 32.

  In addition, this invention is not limited to the said embodiment, It can implement in a various aspect.

  For example, in the above embodiment, the work 4 is held from the inside and inserted into the interior pipe 32, but the columnar work 4 is placed on the rail and the rear end is pushed by the supply bar. You may make it supply. At this time, when the workpiece 4 is made of iron or the like, the workpiece 4 may be held by attaching a magnet or the like to the supply bar.

  In the above embodiment, the pickup mechanism 21 is provided to take out the workpiece 4 from the parts feeder 20. However, without providing such a mechanism, for example, the workpiece 4 is manually attached to the tip of the supply bar 220. You may make it attach.

The figure which shows the outline | summary of the lathe processing machine which shows one embodiment of this invention The figure which shows the operation state of the loading apparatus in the same form The figure which shows the outline | summary of the top view of the loading apparatus in the same form The figure which shows the supply bar and the holding | maintenance state of a workpiece | work in the same form The figure which shows the state of the chuck | zipper, an interior pipe, and a supply bar in the same form The figure which shows the operation state of the lathe machine in the same form The figure which shows the operation state of the lathe machine in the same form The figure which shows the operation state of the lathe machine in the same form The figure which shows the operation state of the lathe machine in the same form

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lathe processing machine 2 Loading apparatus 3 Apparatus main body 4 Workpiece 20 Parts feeder 21 Pickup mechanism 22 Loading mechanism 30 Chuck 31 Tool post 32 Inner tube 33 Insertion part 34a Clamp cylinder 34 Seal member 40 Inner diameter part 200 Stacking base 201 Chute 202 Stopper 203 Claw 210 Set portion 211 Receiving member 211a Outer peripheral member 211b Motor 213 Angle changing mechanism 214 Set portion reciprocating cylinder 215 Set abnormality detection portion 216 Guide member 217 Proximity switch 220 Supply bar 221 Inner pressing portion 222 Groove portion 223 Oil supply portion 224 Discharge hole 225 Holder 226 Supply mechanism 227 Timing belt 228 Servo motor 229 Stopper

Claims (5)

In a lathe machine that processes a workpiece having a hollow inner diameter part on the inside,
A supply bar having an inner pressing portion that presses from the inner side of the inner diameter portion of the workpiece, and the supply bar is inserted in a state where the workpiece is gripped from an insertion portion of an inner tube provided at the back of the chuck, and the workpiece is chucked A lathe processing machine comprising: a supply mechanism that pulls back the supply bar after being held by the machine.   The lathe according to claim 1, wherein the supply bar includes an oil supply part that supplies oil to an inner side in a longitudinal direction along the axis, and discharges the oil from a discharge hole provided in a tip part. .   The lathe according to claim 1, wherein the insertion portion is provided with a seal member that prevents oil from being removed when the supply bar is pulled back.   The supply mechanism pulls back a supply bar after gripping a workpiece by a chuck, and waits for the next workpiece behind the chuck in a state where the next workpiece is gripped by the tip of the supply bar. The lathe machine according to 1. In a loading device for supplying a workpiece to a processing machine main body for lathing the workpiece held by the chuck,
A parts feeder for placing a plurality of workpieces, a pickup mechanism for taking out one workpiece from the parts feeder, a supply bar for gripping the workpiece taken out by the pickup mechanism at the tip, and the supply bar at the back of the chuck A feed mechanism for inserting into the insertion portion of the inner pipe, and when the workpiece in the reverse direction is detected by the pickup mechanism, the workpiece is gripped in the normal direction at the tip of the supply bar by reversing the workpiece. A loading device used in a lathe according to any one of claims 1 to 4, wherein the loading device is used.

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