JP7055344B2 - Work receiving device - Google Patents

Description

The present invention relates to a work receiving device that receives a work from a chuck in a machine tool.

The machine tool has a process of discharging the work to the outside of the machine after the processing is completed.

As shown in Patent Document 1, in the step of discharging the work to the outside of the machine, the work is grasped by the finger of the air hand provided at the tip of the arm and the work is conveyed.

The air hand has a limit on the weight of the work that can be grasped by the finger. In addition, there is a limit to the stroke of the finger in the air hand. Therefore, it is difficult for the air hand to handle workpieces of various weights and shapes. In order to transport workpieces of different weights and shapes, it takes time to replace the air hand.

Therefore, as shown in Patent Document 1, there is a bucket provided at the tip of a swing arm that can handle workpieces of various weights and shapes as compared with an air hand.

In Patent Document 1, the swing arm is swiveled from the preparation position for receiving the work from the chuck in the bucket, and the work is discharged from the bucket at the discharge position.

Japanese Patent Application Laid-Open No. 11-10407

It is necessary to tilt the bucket at the discharge position, and there is a problem that it is difficult to shorten the time from receiving the work in the bucket to discharging the work from the bucket.

In addition, an additional configuration is required to realize the operation of tilting the bucket. Therefore, there is a problem that the work receiving device becomes large and the space occupied by the work receiving device and the space for operation become large in the machine.

Therefore, the present invention can handle workpieces of various weights and shapes, shorten the time required to eject the workpiece from the bucket, and reduce the occupied space and the space for operation in the machine. An object of the present invention is to provide a work receiving device capable of receiving a work.

In order to solve the above problem, the work receiving device according to claim 1 has a bucket for receiving the work from the chuck in the machine tool, and the bucket is formed with a slit by an extrusion means passing through the slit. The work in the bucket is discharged , the slit is formed along the direction in which the bucket is movable, the pushing means is fixed, and the bucket moves. By doing so, the pushing means relatively passes through the slit.

The work receiving device according to claim 1 receives the work from the chuck in a bucket.

The work receiving device according to claim 1 can eject the work in the bucket by the pushing means passing through the slit without tilting the bucket.

Further, the work receiving device according to claim 1 can allow the coolant and chips adhering to the received work to flow out through the slit without being accumulated in the bucket.

Originally, the bucket was movable inside the machine tool in order to receive the work from the chuck. Therefore, if the slit is formed along the movable direction of the bucket, the work receiving device of claim 1 uses the movement of the bucket with respect to the fixed pushing means to move the work in the bucket. Can be discharged.

Since the work receiving device according to claim 1 transports the work in a bucket, it can handle works of various weights and shapes. Further, since the work receiving device according to claim 1 can eject the work in the bucket without tilting the bucket, the time until the work is ejected from the bucket can be shortened, and the work can be ejected from the bucket. The occupied space and the space for operation can be reduced.

It is a perspective view which shows the state of ejecting a work from the work receiving apparatus of 1st Embodiment which concerns on this invention. It is a perspective view which shows the state before ejecting a work from the work receiving apparatus of 1st Embodiment which concerns on this invention. It is a perspective view of the work receiving apparatus of the 2nd Embodiment which concerns on this invention. It is a front view and the side view of the work receiving device of the 3rd Embodiment which concerns on this invention.

Hereinafter, the work receiving device according to the first embodiment of the present invention will be described.

The machine tool was discharged from a chuck attached to the tip of the spindle, a tool post for processing the work W held by the chuck, a work receiving device 1 for receiving the machined work, and a work receiving device 1. It has a work storage box 10 for accommodating the work W.

The rod-shaped work W is supplied by a bar feeder.

The work receiving device 1 has a traveling shaft extending in a direction substantially parallel to the rotation axis of the chuck, an arm 2 that can move along the traveling axis, and a bucket 3 provided at the tip of the arm 2. ..

The work receiving device 1 is configured so that the bucket 3 can move to at least an arm standby position, a receiving position, and a work discharging position.

The arm 2 can be positioned at an arbitrary position on the traveling shaft by a servomotor.

The arm 2 can swivel around a swivel axis substantially parallel to the rotation axis of the chuck. Further, the arm 2 can increase or decrease the distance between the position of the tip end where the bucket 3 is provided and the swivel shaft.

As shown in FIG. 1, the bucket 3 has a cylindrical body having a truncated cone in its outer shape. In the bucket 3, the central axis of the truncated cone is substantially parallel to the rotation axis of the chuck. In the bucket 3, a portion corresponding to the upper bottom of the truncated cone is open, and a portion corresponding to the lower bottom of the truncated cone is closed. The bucket 3 is capable of inserting the work W through an opening corresponding to the upper bottom of the truncated cone.

A continuous slit 4 is formed in a portion corresponding to the lower bottom of the truncated cone and a portion corresponding to the side peripheral surface. The slit 4 is formed in a direction parallel to the traveling axis, which is the direction in which the bucket 3 is movable.

The work storage box 10 is fixed in an upright state with the extrusion plate 11 which is an extrusion means. The extrusion plate 11 can pass through the slit 4 of the bucket 3.

Next, a series of operations of the work receiving device 1 will be described below separately for a receiving operation, a transporting operation, and a discharging operation.

In the receiving operation, the work receiving device 1 first causes the arm 2 to travel along the traveling axis from the arm standby position.

Next, the arm 2 is swiveled around the swivel axis to bring the tip of the arm 2 closer to the chuck.

Next, the arm 2 increases the distance between the position of the tip of the arm 2 provided with the bucket 3 and the swivel axis, and further brings the tip of the arm 2 closer to the chuck.

Next, the arm 2 travels along the traveling axis in the direction in which the bucket 3 approaches the chuck. As a result, the bucket 3 reaches the receiving position.

At this receiving position, a part of the work W held by the chuck is inserted through the opening of the bucket 3.

At this receiving position, when the work grip of the chuck is released, the work W is housed in the bucket 3.

At the receiving position, the bar feeder may push the work W from the chuck toward the bucket 3 so that the work W is housed in the bucket.

The work W housed in the bucket is placed along the portion corresponding to the side peripheral surface of the truncated cone of the bucket. Therefore, the work W is pushed toward the lower bottom of the closed cone of the bucket 3 by gravity. Therefore, the work W is less likely to fall from the bucket 3.

In the transport operation, first, with the work W housed in the bucket 3, the distance between the position of the tip of the arm 2 provided with the bucket 3 and the swivel shaft is reduced.

Next, the arm 2 is swiveled around the swivel axis to move the tip of the arm 2 away from the chuck.

In the process of turning the arm 2, the slit 4 of the bucket 3 may be positioned downward in the vertical direction. Therefore, the coolant and chips adhering to the received work W can be discharged through the slit 4 without being accumulated in the bucket 3.

Next, the bucket 3 travels along the traveling axis in a direction approaching the work storage box 10. As a result, the bucket 3 reaches the work discharge position.

The discharge operation will be described with reference to FIG. The bucket 3 is made of a transparent material for the purpose of explaining the discharging operation.

FIG. 1A shows a state in which the bucket 3 is in the discharge position. The slit 4 is positioned downward in the vertical direction. From this state, as shown by the arrow A, the arm 2 is moved along the traveling axis in the direction in which the bucket 3 approaches the extrusion plate 11.

Along with this, inside the bucket 3, the extruded plate 11 starts to relatively pass in the direction in which the slit 4 extends, with a part of the extruded plate 11 protruding from the slit 4. Further, when the arm 2 is driven along the traveling axis in the direction of the arrow A, as shown in FIG. 1 (b), the extrusion plate 11 passing through the slit 4 transfers the work W in the bucket 3 to the bucket 3. Slide in the direction of pushing out from the opening.

When the extrusion plate 11 finishes passing through the slit 4, the work W is discharged from the bucket 3 and falls into the work storage box 10.

The arm 2 for which the work W has been discharged returns to the arm standby position.

Further, as shown in FIG. 2, the work W may be dropped onto the shooter 20 instead of the work storage box 10.

Similarly, the shooter 20 has an extrusion plate 21 fixed to the shooter 20. FIG. 2 shows a state in which the bucket 3 is in the work discharge position. When the arm 2 is moved in the direction indicated by the arrow B from this state, the work W is similarly discharged from the bucket 3 and dropped into the shooter 20 in the process of the extrusion plate 21 passing through the slit 4. ..

The work W that has fallen on the shooter 20 rolls along the shooter 20 and is sent to the outside of the machine tool.

As shown in FIG. 2, the work W can be discharged from the bucket 3 even when the slit 4 is not positioned downward in the vertical direction while the bucket 3 is in the discharge position.

The bucket 3 described above can receive, transport, and deliver all the workpieces gripped by the chuck, but is particularly suitable for receiving, transporting, and delivering the residual material of the workpiece.

Hereinafter, the work receiving device 1 of the second embodiment of the present invention will be described.

The description common to the first embodiment will be omitted.

In the first embodiment, the case where the bucket 3 has a tubular body having a truncated cone as an outer shape has been described.
In the second embodiment, the bucket 5 is a saucer. The bucket 5 is obtained by removing a part of the side peripheral surface and a part of the lower bottom of the tubular body of the truncated cone of the bucket 3.

In FIG. 3, the bucket 5 is open above the saucer. Therefore, in the receiving operation, the work falling from above the bucket 5 can also be received.

Similar to the first embodiment, the slit 6 of the bucket 5 is formed in a direction parallel to the traveling axis, which is the direction in which the bucket 3 is movable.

Similar to the first embodiment, when the arm 2 is moved in the direction indicated by the arrow C, the work W is discharged from the bucket 5 in the process of the extrusion plate (omitted in FIG. 3), which is the extrusion means, passing through the slit 6. Will be done.

Since the upper part of the bucket 5 is open, the work W can be unbalanced and dropped from the bucket into the work storage box by gravity before the extrusion plate 11 finishes passing through the slit 6. Therefore, the second embodiment may be able to shorten the time for discharging the work W from the bucket.

Hereinafter, the work receiving device 1 according to the third embodiment of the present invention will be described.

The description common to the first embodiment will be omitted.

As shown in FIG. 4, the bucket 7 of the third embodiment is composed of a tubular body having an opening 8 on the side peripheral surface. Further, the slit 9 is formed along the turning direction of the arm 2, which is the direction in which the bucket 7 is movable.

Similar to the first embodiment, when the arm 2 is moved in the direction indicated by the arrow D, the work W opens the bucket 7 in the process of passing the extrusion plate (omitted in FIG. 4) which is the extrusion means through the slit 9. It is discharged from 8.

The bucket 7 of the third embodiment is effective when it is difficult to secure a space for discharging the work W in the traveling direction of the arm 2, but it is possible to secure a space for discharging the work W in the turning direction of the arm 2.

In the above embodiment, the case where the rod-shaped work W is supplied by the bar feeder has been described, but the present invention is not limited thereto. For example, the work may be supplied by a work loader or the like.

In the above embodiment, the case where the arm 2 can travel along the traveling axis, rotate around the turning axis, and move to increase or decrease the distance between the tip position and the turning axis has been described, but is limited to this. There is no such thing. For example, traveling along an axis other than the above description, turning around an axis other than the above description, or a combination of these may be possible.

In the above embodiment, the case where only the bucket 3 is provided at the tip of the arm 2 has been described, but the present invention is not limited to this. The air hand and the bucket may coexist at the tip of the arm.

In the above embodiment, the case where the buckets 3, 5 and 7 have a cross section having a circular shape or a shape in which a part of the circle is cut out has been described, but the present invention is not limited thereto. For example, the bucket may have a polygonal cross section.

For example, a bucket 3 having a truncated cone outer shape has a polygonal cross section, and the outer shape of the bucket 3 is a pyramid base. In this case, if the boundary line of the side peripheral surface is positioned downward in the vertical direction at the discharge position, the bucket supports the work by the two side peripheral surfaces constituting the boundary line. Therefore, at the discharge position, the work does not roll inside the bucket, and the pushing means passing through the slit can surely push the work.

The above embodiment has described the case where the bucket 3 is made of a transparent material, but the present invention is not limited thereto. The bucket may be made of an opaque material.

The above-described embodiment has described a case where a work whose chuck is released from gripping or a work extruded by a bar feeder is received, but the present invention is not limited thereto. The work that has been cut off may be caught by the tool post.

Further, the tip of the arm may be rotatable so that the opening of the bucket faces the plurality of chucks.

The above embodiment has described the case where the bucket 3 travels along the traveling axis in the direction approaching the work storage box 10 and reaches the discharge position, but the present invention is not limited to this. In the transport operation, for example, in addition to traveling along the traveling axis, movements such as turning around the turning axis and movements thereof may be combined to allow the bucket to reach the discharge position.

The above embodiment has described the case where the extrusion means is the extrusion plate 11, but the present embodiment is not limited to this. The pushing means may have a shape capable of passing through the slit, for example, a rod body or the like.

1 Work receiving device 2 Arm 3 Bucket 4 Slit 5 Bucket 6 Slit 7 Bucket 8 Opening 9 Slit 10 Work storage box 11 Extruded plate 21 Shooter 22 Extruded plate

Claims (1)

In machine tools
Has a bucket to receive the work from the chuck,
The bucket has a slit formed therein.
The work in the bucket is discharged by the pushing means passing through the slit .
The slit is formed along the direction in which the bucket is movable.
The extrusion means is fixed and
A work receiving device, characterized in that the pushing means relatively passes through a slit by moving the bucket .

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