JPH1110407A - Work driving-away device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work driving-away device in which the preparation position of a work bucket can be easily changed in accordance with the diameter of the work. SOLUTION: A work bucket 8 having a second arm 9 is turnably fitted to the end of a first arm 11 that is turned between the preparation position for receiving a cutout finished work and the discharge position of the work. The turning positioning of the work bucket 8 with regard to the end position of the first arm 11 is made possible by a twisting spring and a stopper 18. Further, the second arm 9 is turned with regard to the first arm 11 up to the position of a work discharge chute 22 in the middle way of turning to the work discharge side by means of the first arm 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for turning a large number of parts from a bar material on a machine tool, particularly a lathe.
The present invention relates to a device for dispensing cut-off processed workpieces.

[0002]

2. Description of the Related Art When a work is sequentially processed from a bar material on a lathe, the cut-out processed work is generally paid out by receiving the cut-off processed work in a work bucket and swinging the work bucket. It is designed to be discharged outside the aircraft.

An example of this case will be described with reference to FIG. When the machining of the bar workpiece held by the chuck of the lathe spindle is completed, the swing arm 31 retracted to the front cover of the lathe during the machining is turned right in FIG. The attached work bucket 32 is positioned immediately below the completed workpiece to prepare for receiving. Next, the machined work is cut off from the bar material by the cutting tool 6 attached to the turret tool post 5, and the work bucket 3 in the preparation position is cut off.
Receive by 2. Thereafter, the swing arm 31 is turned in the opposite direction, and the work bucket 32 is transported to the discharge position of the chute 22 provided on the lathe front cover 21. The processed work in the work bucket 32 is stored in the storage box 33 of the processed work which is installed outside the machine from the chute 22.
Get stuck inside. In this apparatus, as shown in FIG. 5, when the work bucket is made to stand by at the optimum position A for the work a having a small diameter, the work and the work bucket 32 are not rotated when the work bucket 32 is turned for the work b having a large diameter. Will interfere.

Therefore, the preparation position B of the work bucket 32 must be determined so that the work bucket 32 does not interfere with the work when the swing arm 31 is turned even for a work b having a large diameter. That is, the work bucket 32 must be positioned at a distance below the rotation center of the work. Therefore, the distance between the work a having a small diameter and the work bucket 32 at the preparation position becomes large, and the work that has fallen when the work is cut off may collide with the work bucket 32 and damage the processed work. If the work is rotated at a high speed to complete the cut-off operation in a short time, the processed work may fall on the floor surface without falling accurately into the work bucket 32. Therefore, conventionally, in order to position the work bucket 32 at a position directly below the work that does not interfere with the work according to the work diameter, the swing center position of the swing arm 31 is changed so that the swing is performed.

[0005]

In the work dispensing apparatus described in the prior art, in order to change the center of rotation of the swing arm according to the diameter of the work, a swing arm corresponding to the diameter of the work must be prepared. In some cases, the swing rotation center axis must be made an eccentric axis or replaced with another axis, which further complicates the operation. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and an object of the present invention is to provide an apparatus that can easily change a preparation position of a work bucket according to a diameter of a work. It is assumed that.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a work dispensing apparatus according to the present invention comprises: a preparation position for receiving a work immediately below a work gripped by a spindle chuck of a lathe; a discharge position at a front portion of the lathe; A work arm that swings a work bucket between and discharges the processed work to the outside of the machine, comprising: a first arm that swings between the preparation position and the discharge position; and a tip end of the first arm. A second arm rotatably supported and having the work bucket at an end on the main spindle side at the preparatory position and having a cam-shaped contact surface at an end on a discharge side, the first arm and the second arm An urging means attached between the first arm and the first arm at the preparatory position. A stopper means for adjusting the position of the bracket so as not to interfere with the workpiece, and a stopper means for adjusting the position of the first arm to the abutting surface in the course of the swiveling movement of the first arm toward the discharge side, so as to bring the second arm into contact with the first arm. A contact means for turning an opening of the work bucket toward the discharge side with respect to the arm; According to the above-described device, the preparation position of the work bucket is changed according to the work diameter only by adjusting the position of the stopper, and only the work bucket is turned again on the discharge side of the cover chute before the lathe to open the opening between the work bucket and the chute. , So that the workpiece can be paid out irrespective of the diameter of the workpiece.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory front view showing a relationship between a work held by a spindle chuck and a work bucket. A chuck 3 is attached to a tip of a spindle 2 supported on the headstock 1, and a bar material 4 as a work is gripped by the chuck 3. Turret tool post 5
A number of tools are attached to the, and various processes are performed on the tip of the bar member 4. Then, after the machining is completed, the work 7 of the machining-completed portion is cut off from the bar material 4 by the parting tool 6 attached to the turret tool post 5. A work bucket 8 is arranged directly below the bar material 4 and receives the cut-off work 7.

The work bucket 8 has legs 9, 9 'serving as second arms welded to both end surfaces thereof in the axial direction of the main spindle 2 so that the leg near the headstock 1 is 9, and the leg on the far side is 9. To 9 '
And The headstock 1 has a central axis 10 parallel to the axis of the spindle 2.
A first swing arm 11 having an L shape in a direction perpendicular to the axis of the main shaft 2 is attached to the end of the first swing arm 11. Therefore, the swing arm 11 turns in a vertical plane. A hexagonal cylindrical boss 12 is provided at the tip of the swing arm 11 in parallel with the axis of the main shaft 2. The details of the X part in FIG. 1 showing the mounting relationship between the boss 12 at the tip of the swing arm and the work bucket 8 will be described with reference to FIG. A turning shaft 13 is inserted through the boss 12, and is pivotally supported by bearing metals 14 fitted at both ends of a center hole of the boss 12.

Lubricating oil is supplied to the bearing metal 14 from a lubrication port (not shown). Two legs 9, 9 'of the work bucket 8 are fixed to both end surfaces of the turning shaft 13, respectively, and an oil seal 15 is interposed between the boss 12 and the legs 9, 9'. Lubricating oil is prevented from leaking and dripping to the outside. A torsion spring 16 is wound around the turning shaft 13. One end of the torsion spring 16 is connected to the boss 12.
, And the other end is locked to the legs 9, 9 '. The work bucket 8 is always urged to turn right in FIGS.

A guide shaft 17 is implanted in the headstock 1 in parallel with the axis of the spindle 2, and the ends of the two legs 9, 9 'of the work bucket 8 are elongated and the outer end surface is cam-shaped. It is configured to be able to engage with the leg 9 having the formed contact surface. FIG. 2 is an explanatory diagram showing a state in which the processed work 7 is received by the work bucket. A stopper 18 is attached to one leg 9 so that the position can be adjusted in the direction P in FIG. 2, and when the work bucket 8 is turned clockwise by the torsion spring 16, the stopper 18 becomes a hexagonal cylinder of the boss 12. The turning is stopped in a state where the work bucket 8 is pressed against the boss 12 while being in contact with one surface of the work.

If the position of the stopper 18 is adjusted, the tilt angle of the work bucket 8 with respect to the swing arm 11 is changed by turning, so that the angular position in the Q direction in FIG. 2 is changed. Now, as shown in FIG. 2, when the work bucket 8 is arranged at the ascending position A in order to correspond to the work a having a small diameter, when the swing arm 11 is turned in a vertical plane, the chuck 3 of the spindle 2 The work b having a large diameter and the work bucket 8 being gripped interfere with each other. Therefore, if the angular position is changed, even when the swing arm 11 is positioned at the same position, the work bucket 8 can be made to correspond to a position that does not interfere with the size of the work diameter. That is, if the work bucket 8 is turned to the left in the Q direction, the preparation position of the work bucket 8 rises and the work bucket 8 can correspond to a work a with a small diameter. It is possible to cope with a work b having a large diameter.

FIG. 3 is an explanatory diagram showing a state of work payout by a work bucket. When the work bucket 8 approaches the lathe front cover 21 due to the swing of the swing arm 11, the cam-shaped contact surface of the leg 9 is moved halfway along the guide shaft 17.
Contact with. When the turning of the arm 11 is further continued, the leg 9 is turned around the turning shaft 13 against the torsion spring 16, and the work bucket is inserted into the opening of the work discharging chute 22 attached to the cover 21. Match the mouth of 8. Since the turning in the Q direction to correspond to the size of the work diameter is performed about the turning shaft 13, the turning in the Q direction is the same as the turning to the discharge chute 22. Even when the work bucket 8 is located, the opening of the discharge chute 22 and the mouth of the work bucket 8 match. When the mouth of the work bucket 8 coincides with the opening of the chute 22, the left side surface of the work bucket 8 forms an inclined surface that is continuous with the lower surface of the chute 22, and the processed work 7 in the work bucket 8 covers the cover 21. Is dropped and stored in the storage box 23 installed outside the box. Although the above description has been given by taking a lathe as an example, it goes without saying that the present invention is not limited to a lathe, but can be applied to a machine such as a grinder and a steel material cutting device and various industrial machines.

[0013]

Since the apparatus according to the present invention is constructed as described above, the following effects can be obtained. The work bucket can be turned with respect to the swing arm, and the work bucket preparation position can be changed by adjusting the work diameter only by adjusting the position of the stopper.Therefore, the work diameter can be adjusted without changing the swing arm turning center position. The work receiving position of the combined work bucket can be easily obtained. Also, since only the work bucket is turned on the chute side of the lathe front cover, the chute opening and the work bucket opening can be made to coincide regardless of the position of the work bucket during preparation for receiving.

[Brief description of the drawings]

FIG. 1 is an explanatory front view showing a relationship between a lathe headstock and a work discharging device.

FIG. 2 is an explanatory diagram showing a relationship between a work size and a bucket preparation position.

FIG. 3 is an explanatory view showing a state in which a work bucket is turned to a lathe front cover.

FIG. 4 is an explanatory view showing an attached state of a work bucket to a boss. (Detailed view of part X in FIG. 2)

FIG. 5 is an explanatory view of a conventional work dispensing apparatus.

[Explanation of symbols]

 2 Main shaft 3 Chuck 4 Bar material 8 Work bucket 9 Second arm 11 First arm 13 Rotating shaft 16 Torsion spring 17 Guide shaft 18 Stopper 21 Front cover 22 Chute

Claims (1)

[Claims] 1. A work delivery for rotating a work bucket between a preparation position for receiving a work immediately below a work held by a spindle chuck of a lathe and a discharge position at a front portion of the lathe to discharge a processed work outside the machine. A first arm swinging between the preparation position and the discharge position, and a work bucket pivotally supported at a tip end of the first arm at an end on a main spindle side at the preparation position. A second arm having a cam-shaped abutment surface at an end on the discharge side, and being mounted between the first arm and the second arm for urging the work bucket to pivot away from the discharge position. And a position-adjustable storage for turning and positioning the work bucket to a position where the work bucket does not interfere with the work in a state where the first arm at the preparation position is pressed and urged by the urging means. The second arm is pivoted toward the discharge side with respect to the first arm, and the opening of the work bucket is pivoted toward the discharge side. A work dispensing device provided with contact means for causing the work to be dispensed.