JPS6119362B2 - - Google Patents

Description

[Detailed Description of the Invention] (Object of the Invention) The present invention is directed to automatically supply not only cylindrical or cylindrical workpieces but also stepped workpieces from a workpiece supply chute to a hand attached to the tip of a slide shaft. This invention relates to an automatic work supply device for lathes.

(Prior art) Conventionally, a workpiece is automatically transferred from a workpiece supply chute to a hand attached to the tip of a slide shaft that moves forward and backward in a direction perpendicular to the axis of the main spindle of the lathe and laterally moves in the direction of the axis of the main spindle. There was no equipment available for this purpose.

In addition, when mounting a stepped workpiece on the chuck of a lathe, a cylindrical guide is positioned in front of the chuck, aligned with the axis of the main spindle of the lathe, and the large diameter part of the stepped workpiece is attached to the inner peripheral surface of this guide. The stepped workpiece was pushed out from the guide and attached to the chuck while being guided by the guide, but once it was removed from the guide, the axis of the stepped workpiece was tilted with respect to the horizontal line, making it difficult to quickly attach the stepped workpiece to the chuck. I couldn't do it.

(Structure of the Invention) The gist of the present invention is a work holder equipped with a holding surface for holding a work, a contact surface for abutting the work, and a pressing lever for pressing the work from above. The lower end of the work supply chute, which is tilted to such an extent that the work can roll under its own weight, is extended for the required length, and at the lower end of the work holder, the work holder is The work holder is placed close to the lower end of the work supply chute so that it is located between the extended side plates of the work supply chute and the rolling surface of the work supply sheet of the work holder is included in substantially the same plane. At the rising end of the workpiece holder, the workpiece holder is configured to reciprocate in a direction parallel to the main axis of the lathe, and the workpiece of the workpiece supply chute is attached to the tip of the slide shaft. It is to serve the hand.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In FIGS. 1 to 3, a lathe L
A horizontal moving table 2 is attached to a machine stand 1 installed on the side of the chuck C of the lathe L so as to be movable in the direction of the axis of the main shaft of the lathe L, and a slide shaft 4 is attached to a slide metal 3 attached to the horizontal moving table 2. The hand H is inserted into the tip of the slide shaft 4 so as to advance and retreat in a direction perpendicular to the axis of the main shaft of the L, through the tip connecting plate 5 and the holding plate 6. Attach it so that it rotates.

In the figure, numeral 7 indicates an air cylinder for advancing and retracting the slide shaft 4, numeral 8 indicates an air cylinder for rotating the hand, and numeral 9 indicates an air cylinder for opening and closing the hand H.

In addition, a workpiece supply chute 1 is installed above the end of the machine base 1.
The base end of a guide rail 12 with a rectangular cross section is attached to the tip of an arm 11 fixed to the end of the machine base 1, horizontally and on the axis of the main shaft of the lathe L. Fix it parallel to the center. A sliding body 13 is slidably fitted to the guide rail 12,
A sliding tube 15 having a square hole 14 with a square cross section is formed, and the axis of the square hole 14 of the sliding tube 15 and the rolling direction (first
The sliding tube 15 is fixed to the sliding body 13 so that the sliding tube 15 is perpendicular to the arrow P direction in the figure.

Further, a work holder 18 is formed, which has a holding surface 16 for holding a work and a contact surface 17 for contacting the work, and has a square side surface shape and has a width that is approximately half the width of the work supply chute 10. A guide rod 19 with a square cross section is attached to the bottom of the workpiece holder 18.
is fixed perpendicularly to the holding surface 16, and the guide rod 19 is slidably fitted into the square hole 14 of the sliding tube 15.

Here, as shown in FIGS. 1 and 2, when the bottom surface of the workpiece holder 18 is in contact with the upper end surface of the sliding tube 15 (the state where the workpiece holder 18 is located at the lower end), the workpiece The rolling surface 20 of the supply chute 10 and the holding surface 16 of the workpiece holder 18 are arranged to be included in substantially the same plane, and only the side plate 21 at the lower end of the workpiece supply chute 10 is connected to the holding surface 16 of the workpiece holder 18. The workpiece holder 18 extends to the side and rolls from the workpiece supply chute 10.
The workpiece W rolled into the workpiece is prevented from falling from the workpiece holder 18.

Further, a support plate 22 is attached to the front surface of the sliding tube 15, and the base end of the lifting air cylinder 24 is pivotally attached to the projecting plate 23 provided at the tip of the support plate 22 with a pin 25, so that the lifting air cylinder 24 is Rod 26
The connector 27 connected to the tip of the workpiece holder 1
The workpiece holder 18 is pivoted by a pin 29 to a projection plate 28 protruding from the front surface of the workpiece supply chute 10, and the workpiece holder 18 is held perpendicular to the rolling direction of the workpiece rolling on the workpiece supply chute 10 by moving in and out of the rod 26 of the lifting air cylinder 25. (direction of arrow Q in Figure 1).

In addition, at the ascending end of the workpiece holder 18, the axis of the workpiece W held by the workpiece holder 18 and the axis of the virtual workpiece held by the hand H attached to the tip of the slide shaft 4 located at the retreating end are aligned. They are positioned so that their hearts are almost in sync with each other.

Further, a support plate 30 is attached to the side surface of the workpiece holder 18 in the rolling direction of the workpiece, and a support plate 31 is attached to the side surface of the workpiece holder 18.
is attached in a direction perpendicular to the rolling direction of the workpiece, and a pressing lever 33 having a claw portion 32 at its tip is pivotally connected to the tip of the support plate 31 with a pin 34, and is pressed against the tip of the support plate 30. The lever rotation air cylinder 35 is attached, and the connecting tool 37 connected to the tip of the rod 36 of the pressure lever rotation air cylinder 35 is connected to the base end of the pressure lever 33 with a pin 38. The pressing lever 33 is rotated by moving the rod 36 of the cylinder 35 in and out, and presses the workpiece W held by the workpiece holder 18 from above.

Also, a lateral movement air cylinder 40 is attached to the tip of the arm 11 via a bracket 39, and a connector 42 connected to the tip of the rod 41 of this lateral movement air cylinder 40 is connected to the side of the sliding body 13 with a pin 43. Connected and lateral movement air cylinder 40
By moving the rod 41 in and out, the workpiece holder 18 attached to the sliding body 13 through the sliding tube 15 is moved horizontally and in a direction parallel to the axis of the main shaft of the lathe L (in the direction of arrow R in FIGS. 1 and 2). direction).

(Operation of the invention) Next, the operation of the invention will be explained with reference to FIGS. 1 to 5.

In order to supply the workpiece W of the workpiece supply chute 10 to the hand H attached to the tip of the slide shaft 4 located at the backward end, the rod 26 of the lifting air cylinder 24 is used as shown in FIGS. 1 and 2. At the same time, the rod 41 of the lateral movement air cylinder 40 is retracted, and the workpiece holder 18 is retracted.
Lower the workpiece supply chute 10 to the lowering end.
As shown in FIG.
It is directed upward with respect to the holding surface 16 of the workpiece holder 18.

In this state, when a mechanism (not shown) for feeding the workpieces attached to the workpiece supply chute 10 one by one is activated, the workpiece W rolls and rolls from the workpiece supply chute 10 into the workpiece holder 18 and is transferred to the workpiece holder. 18 by the holding surface 16 and the contact surface 17, and then by protruding the rod 36 of the air cylinder 35 for rotating the press lever.
The press lever 33 is rotated in the direction of arrow S (see FIG. 4), and the tip of the work W press lever 33 held by the work holder 18 presses from above.

Now, almost half of the workpiece W in the axial direction protrudes from the workpiece holder 18, but since the end of the workpiece W is pressed from above by the pressing lever 33, the workpiece W is pushed into the workpiece holder 18. It won't fall off.

Next, the rod 2 of the lifting air cylinder 24
6, the workpiece holder 18 is raised to the rising end as shown in FIG. and Fig. 2), the tip of the workpiece W held by the workpiece holder 18 is inserted between the hands H waiting in an open state, and then the opening/closing air cylinder 9 The hand H is closed to grasp the front end of the workpiece W, and then the rod 36 of the press lever rotation air cylinder 35 is projected to release the pressure on the rear end of the workpiece W.

The work W is now gripped by the hand H and transferred from the work holder 18 to the hand H.

To return the empty workpiece holder 18 to the lower end of the workpiece supply chute 10, the rod 41 of the lateral movement air cylinder 40 is retracted to move the empty workpiece holder 18 laterally in the direction of arrow R', and then When the rod 26 of the lifting air cylinder 24 is retracted to lower the empty work holder 18 and the bottom surface of the work holder 18 comes into contact with the upper end surface of the sliding tube 15, the empty work holder 18 is lowered. is returned to its original position (lowering end).

By repeating the above operations, the work W from the work supply chute 10 is fed to the hand H attached to the tip of the slide shaft 4 for one piece.

In addition, the slide shaft 4 holding the workpiece W with the hand H at the tip is moved forward, and then moved laterally in the axial direction of the main shaft of the lathe L, and the workpiece W held with the hand H is mounted on the chuck C of the lathe L. do.

In addition, the workpiece to be supplied may not only be cylindrical or cylindrical, but also a workpiece having a shape corresponding to the stepped workpiece W' on the workpiece supply chute 10 as shown in FIGS. 6 and 7. By providing the rolling surface 20', the workpiece holder 18 can hold a stepped workpiece W' in the same way as a columnar or cylindrical workpiece.

(Effects of the Invention) As detailed above, according to the automatic lathe workpiece supply device of the present invention, not only cylindrical or cylindrical workpieces but also stepped workpieces can be slid from the workpiece supply chute. A workpiece can be automatically and quickly supplied to a hand equipped with a shaft at its tip, and as a result, the operating rate of lathe work is substantially improved.

In particular, when the workpiece to be served is a stepped workpiece, the stepped workpiece fed into the workpiece supply chute is first attached to the hand at the tip of the slide shaft by the workpiece supply device of the present invention, and the slideshaft is moved forward and sideways. By moving the
A stepped workpiece can be mounted on the chuck of a lathe extremely smoothly.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a view taken in the direction of arrow A in FIG. 1.
Figure 4 is a side view showing the pressing lever facing upward, Figure 5 is a side view showing the workpiece holder raised, and Figure 6 is the side view showing the stepped workpiece being held. The plan view shown in FIG. 7 is the X-
It is an X-ray cross-sectional view. Explanation of symbols of main parts, 4... Slide shaft, 10... Work supply chute, 16... Holding surface, 17... Contact surface, 18... Work holder, 2
0...Rolling surface of work supply chute, 33...Press lever, H...Hand, W...Work.

Claims (1)

[Claims] 1 A workpiece holder is formed that includes a holding surface for holding a workpiece, a contact surface for abutting the workpiece, and a pressing lever for pressing the workpiece from above, and the workpiece is Only the side plates at the lower end of the workpiece supply chute, which are inclined to the extent that it can roll, are extended for the required length, and at the lower end of the workpiece holder, the workpiece holder is located between the extended side plates of the workpiece supply chute. The work holder is mounted so as to be movable up and down in close proximity to the lower end of the work supply chute so that the work holder's holding surface and the rolling surface of the work supply sheet are substantially in the same plane. An automatic work supply device for a lathe, characterized in that the work holder is configured to reciprocate in a direction parallel to the main axis of the lathe at the rising end of the work holder.