JP6499560B2 - Work carry-out device - Google Patents

Description

  The present invention relates to a work carry-out device.

  As an unloading device for unloading a workpiece machined by a machine tool such as an automatic lathe, a device for gripping and unloading a workpiece with a hand device installed on a turret tool post has been proposed (for example, see Patent Document 1).

JP 2013-059842 A

However, the unloading device of Patent Document 1 moves the turret tool post so that the hand device can receive (grip) the processed workpiece gripped by the chuck on the spindle side, and the hand device grips the workpiece on the spindle side. Thereafter, the turret tool post is moved, the hand device is moved to the chute, and the workpiece is carried out. Therefore, there is a problem that it takes a long time to complete the unloading after receiving the processed workpiece by the hand device.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a workpiece unloading device that can quickly unload a workpiece machined on the spindle side of a machine tool with a simple configuration.

  The present invention includes a receiving portion that receives a workpiece from a main spindle side of a machine tool, and the receiving portion is attached to the rotating shaft so as to rotate integrally with a rotating shaft that rotates to face the main shaft, and the receiving portion The part is formed with a plurality of outlets for carrying out the work to the outside, and each of the outlets has the work received by the receiving part in a direction of rotation and an angle of rotation of the receiving part by the rotation shaft. It is a workpiece unloading device provided to selectively unload corresponding to at least one of them.

  The workpiece unloading apparatus according to the present invention can quickly unload a workpiece processed on the spindle side of the machine tool with a simple configuration.

It is a top view which shows typically the principal-axis part of the automatic lathe provided with the workpiece carrying-out apparatus which is one Embodiment of this invention. (A) is a side view of a turning chute in the workpiece carry-out device, and (B) is a front view of the turning chute. It is a perspective view of a turning chute. It is a side view which shows operation | movement of the turning chute attached to the back main axis | shaft, (A) is the state which is separated from the front main axis | shaft before receiving a workpiece | work, (B) is the state which approached the front main axis | shaft which receives a workpiece | work, (C ) Is a state in which the received workpiece is slid on the inclined surface, (D) is a state in which the workpiece is slid on the take-out rail, and (E) is a state in which the workpiece is retracted and removed from the front spindle (original position). ), Respectively. It is a front view which shows the operation | movement which delivers a workpiece | work, (A) is the state shown in FIG.4 (E), (B) is the state which delivers a workpiece | work to a fixed chute, (C) delivers a workpiece | work to a fixed chute. Each state. FIG. 5 is a view corresponding to FIG. 4 illustrating an example of a configuration in which a turning chute is turned after being separated from the front spindle, (A) is a state away from the front spindle before receiving the workpiece, and (B) is a front view receiving the workpiece. (C) is a state where the received workpiece is slid on the inclined surface, (D) is a state where the workpiece is held on the carry-out rail, and (E) is a state where the workpiece is retracted and separated from the front spindle. (Returned to the original position).

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a workpiece unloading apparatus according to the present invention will be described with reference to the drawings.
FIG. 1 is a plan view schematically showing a main shaft portion of an automatic lathe 100 including an unloading device 40 for a workpiece 1 according to an embodiment of the present invention. FIG. 2A is a turning chute 41 in the unloading device 40 for a workpiece 1. 2B is a front view of the turning chute 41, and FIG. 3 is a perspective view of the turning chute 41.
As shown in FIG. 1, the automatic lathe 100 includes two front spindles 10, 20, one back spindle 30, and a workpiece 1 carry-out device 40.

  The front main shafts 10 and 20 and the rear main shaft 30 are rotationally driven around the respective axis centers C1, C2 and C3, and the two front main shafts 10 and 20 are such that the respective axis centers C1 and C2 are parallel to each other. Are arranged in the same direction. The back main shaft 30 linearly moves so that the axis C3 coincides with the axis C1 or the axis C2 and faces the front main shafts 10 and 20, and moves along the axis C1 and the axis C2. Thus, it is provided in a direction facing both front spindles 10 and 20.

The unloading device 40 sorts and unloads the workpiece 1 processed in the first front spindle 10 to the collection box 51 by a turning chute 41 which is an example of a receiving portion that receives the workpiece 1 from the front spindles 10 and 20. The workpiece 1 machined in the front spindle 20 is distributed to the collection box 52 and carried out.
The turning chute 41 is integrally provided with a mounting portion 42. As shown in FIG. 2, the attachment portion 42 is attached with a screw 33 to a cap nut 31 that is integrally screwed with a rear main shaft 30 that is an example of a rotary shaft that rotates opposite to the front main shafts 10 and 20. ing. Thereby, the turning chute 41 rotates around the axis C3 integrally with the back main shaft 30.

The cap nut 31 is fixed to the back main shaft 30 so that the posture of the carry-out rail 45 of the turning chute 41 fixed to the cap nut 31 with the screw 33 is horizontal.
When the posture of the turning chute 41 is not horizontal, the back main shaft 30 may be rotated so as to be horizontal.
In addition, the hole through which the screw 33 penetrates the attachment portion 42 may be a long hole extending in the circumferential direction. The posture of the turning chute 41 can be made horizontal.

  The turning chute 41 includes a chute body 43 that receives the workpiece 1 from the front spindles 10 and 20. As shown in FIG. 3, the chute main body 43 has a bowl-shaped receiving cup 44 extending in the direction of the axis C3 that serves as a workpiece receiving part, and a horizontal direction that is substantially orthogonal to the axis C3 that serves as a carry-out guide part. And a bowl-shaped carry-out rail 45 extending in the direction of the bottom.

  In the receiving cup 44, a portion corresponding to the bowl-shaped bottom surface is an inclined surface 44a that becomes lower as it approaches the back main shaft 30 so as to slide the received workpiece 1 down. The bottom surface opens at the tip of the inclined surface 44a. A central portion of the carry-out rail 45 faces below the opening. Accordingly, the work 1 received by the receiving cup 44 slides on the inclined surface 44a to the lower side and is dropped onto the carry-out rail 45 from the opening.

Both ends of the carry-out rail 45 serve as outlets 45a and 45b for sliding the work 1 downward and carrying it out to the outside by tilting the carry-out rail 45. When the turning chute 41 rotates counterclockwise when the rear main shaft 30 is viewed from the front, the workpiece 1 is carried out (discharged) from the outlet 45a in a state where the outlet 45a is lowered to a position lower than the outlet 45b. ). On the other hand, when the turning chute 41 rotates clockwise when the rear main shaft 30 is viewed from the front, the work 1 is discharged from the outlet 45b to the outside in a state where the outlet 45b is lowered to a position lower than the outlet 45a. To do.
The attachment portion 42 and the receiving cup 44 are formed of a single member, and the receiving cup 44 and the carry-out rail 45 are joined and integrated.

As shown in FIG. 1, the carry-out device 40 includes fixed chutes 48 and 49 (guide portions) that guide the work 1 carried out from the outlets 45 a and 45 b without being attached to the back main shaft 30.
When the first fixed chute 48 is on the side on the first front main shaft 10 side, the back main shaft 30 faces the first front main shaft 10, that is, the shaft center C3 coincides with the shaft center C1. In addition, it is arranged at a position in a range where one outlet 45a of the carry-out rail 45 reaches. The first fixed chute 48 receives the workpiece 1 carried out from the outlet 45a and guides the workpiece 1 to a first collection box 51 (an example of a stacking unit) disposed on the first front main shaft 10 side.

  When the second fixed chute 49 is on the side on the second front main shaft 20 side, the back main shaft 30 faces the second front main shaft 20, that is, the shaft center C3 coincides with the shaft center C2. The other outlet 45b of the carry-out rail 45 is disposed at a position within a range. The second fixed chute 49 receives the workpiece 1 carried out from the outlet 45b, and guides the workpiece 1 to a second collection box 52 (an example of a stacking unit) disposed on the second front main shaft 20 side.

<Operation of work unloading device>
FIG. 4 is a side view showing the operation of the chute body 43 receiving the workpiece 1, and FIG. 4A is a state where the chute body 43 is separated from the first front main shaft 10 (or the second front main shaft 20) before receiving the work 1. (B) is a state approaching the first front main shaft 10 (or the second front main shaft 20) that receives the work 1, (C) is a state where the received work 1 is slid on the inclined surface 44a, (D ) Is a state in which the work 1 is slid by the unloading rail 45, and (E) is a state in which the work 1 is moved backward after being unloaded and separated from the first front main shaft 10 (or the second front main shaft 20). Each of which has been returned).

  5A and 5B are front views showing the operation of delivering the workpiece 1, (A) is the state shown in FIGS. 4A and 4E, and (B) is the state of delivering the workpiece 1 to the fixed chute 48, (C) shows a state in which the workpiece 1 is delivered to the fixed chute 49.

Next, the operation (action) of the unloading device 40 for the workpiece 1 according to this embodiment will be described.
The unloading device 40 is configured such that the control device in the automatic lathe 100 receives the workpiece 1 from the front spindles 10 and 20 and moves the back spindle 30 (movement between the axes C1 and C2, forward and backward), the front spindles 10 and 20 The operations of the front main shafts 10, 20 and the rear main shaft 30 such as the operations of the parting tools 15, 25, the delivery of the workpiece 1 from the front main shafts 10, 20 to the turning chute 41 and the rotation of the rear main shaft 30 are controlled.

  When the workpiece 1 processed by the first front main shaft 10 is received by the chute main body 43, the rear main shaft 30 moves to a position facing the first front main shaft 10 as shown by the solid line in FIG. At this time, as shown in FIGS. 1 and 4A, the axis C3 and the axis C1 coincide. At this time, the carry-out rail 45 is maintained in a horizontal posture in which the outlet 45a and the outlet 45b are at the same height position.

  Subsequently, as shown in FIG. 4B, the back main shaft 30 has a shaft center C3 (C1) up to a position where the work 1 held by the first front main shaft 10 is received in the bowl-shaped space of the chute body 43. ) At this time, as shown in FIG. 5B, the back main shaft 30 has an axis C3 when the back main shaft 30 is viewed from the front so that the outlet 45a of the carry-out rail 45 is positioned lower than the other outlet 45b. And the turning chute 41 turns.

  In this state, as shown in FIG. 4B, the work 1 held by the first front spindle 10 is cut by a parting tool 15 provided on the tool post on the first front spindle 10 side. As shown in FIG. 4C, the cut workpiece 1 is received by the chute body 43 and slides down along the inclined surface 44a. As shown in FIG. 4D, the work 1 falls onto the carry-out rail 45 from an opening formed at the tip (lower side) of the inclined surface 44a. Since the carry-out rail 45 has a posture in which the outlet 45a is inclined lower than the outlet 45b, the work 1 slides on the carry-out rail 45 toward the outlet 45a.

Then, as shown in FIG. 5B, the work 1 is unloaded from the outlet 45 a, loaded into the first fixed chute 48, slides down the first fixed chute 48, and is stored in the first collection box 51. Is done.
Thereafter, the back main shaft 30 rotates clockwise about the axis C3 when the back main shaft 30 is viewed from the front, returning the carry-out rail 45 to the horizontal state (the state shown in FIG. 5A), and FIG. As shown to E), it retracts along the axis C3 and leaves | separates from the 1st front main axis | shaft 10. As shown to FIG.

When the back spindle 30 receives the workpiece 1 processed by the second front spindle 20 by the chute body 43, the back spindle 30 moves to a position (indicated by a two-dot chain line) facing the second front spindle 20. At this time, as shown in FIGS. 1 and 4A, the axis C3 and the axis C2 coincide.
Hereinafter, since the back main shaft 30 is the same as when the work 1 processed by the first front main shaft 10 is received by the chute body 43, the description is omitted. The rotation direction of the back main shaft 30 is the rotation opposite to the case where the work 1 processed by the first front main shaft 10 is received by the chute main body 43, and as shown in FIG. The outlet 45b rotates so as to have a lower slope than the other outlet 45a.

Since the outlet 45b of the carry-out rail 45 is lower than the other outlet 45a, the workpiece 1 received from the second front main shaft 20 slides toward the outlet 45b, is carried out from the outlet 45b, and is supplied to the second fixed chute 49. It is thrown into.
The work 1 slides down the second fixed chute 49 and is accommodated in the second collection box 52.
Thereafter, the back main shaft 30 rotates counterclockwise around the axis C3 when the back main shaft 30 is viewed from the front, returning the carry-out rail 45 to the horizontal state (the state of FIG. 5A), and FIG. As shown to (E), it retreats along the axial center C3, and leaves | separates from the 2nd front main axis | shaft 20. FIG.
The timing for rotating the turning chute 41 is not limited to the above-described example.

FIG. 6 is a view corresponding to FIG. 4 showing an example of a configuration in which the turning chute 41 turns after being separated from the front spindles 10 and 20, and FIG. 6A is a diagram of the first front spindle 10 ( Or (B) is a state of approaching the first front main shaft 10 (or the second front main shaft 20) that receives the work 1, and (C) is a state of receiving the work 1 (D) is a state where the work 1 is held on the carry-out rail 45, and (E) is retracted from the first front spindle 10 (or the second front spindle 20). A separated state (returned to the original position) is shown.
In the example shown in FIG. 6, the turning chute 41 approaches the front main shaft 10, 20, receives the workpiece 1, rotates after leaving the front main shaft 10, 20, and rotates the work 1 from the turning chute 41 to the fixed chute 48, It operates to be carried out to 49.

Specifically, when the back main shaft 30 receives the workpiece 1 processed by the first front main shaft 10 (or the second front main shaft 20) by the chute body 43, the back main shaft 30 is placed in a horizontal posture (FIG. In the state shown in FIG. 6A with A)), the first front spindle 10 (or the second front spindle 20) approaches as shown in FIG. 6B. Then, as shown in FIG. 6C, the workpiece 1 received from the first front main shaft 10 (or the second front main shaft 20) and slid down to the lower side along the inclined surface 44a is shown. As shown in FIG. 6 (D), it is held by the carry-out rail 45.
As shown in FIG. 6E, the turning chute 41 is separated from the first front main shaft 10 (or the second front main shaft 20) while holding the work 1 on the carry-out rail 45.

Thereafter, as shown in FIG. 5 (B), the back main shaft 30 is turned so that the outlet 45a on the side close to the first fixed chute 48 is lower than the other outlet 45b. The work 1 held on the first is taken out from the outlet 45 a to the first fixed chute 48 and is stored in the first collection box 51.
Alternatively, as shown in FIG. 5C, the back main shaft 30 is turned so that the outlet 45b on the side close to the second fixed chute 49 is lower than the other outlet 45a. The work 1 held on the second is taken out from the outlet 45b to the second fixed chute 49 and accommodated in the second collection box 52.

According to the workpiece 1 carry-out device 40 in the embodiment configured as described above, the chute body 43 receives the workpiece 1 with a simple configuration, so that the turning chute 41 receives the workpiece 1 and the spindle side of the machine tool. It is possible to quickly carry out the workpiece 1 processed by the above.
Further, according to the unloading device 40, since the work 1 is distributed and unloaded using the rotation of the back spindle 30, it is not necessary to provide a new power source for the sorting operation and unloading operation, and the cost is reduced. It can also be reduced.

Moreover, according to this carrying-out apparatus 40, since the chute | shoot main body 43 sends the received workpiece | work 1 to the carrying-out rail 45, sliding the inclined surface 44a, compared with the case where the workpiece | work 1 is simply dropped freely and accommodated, The magnitude of impact applied to the workpiece 1 can be reduced.
In addition, according to the carry-out device 40, the fixed chutes 48 and 49 are separate from the turning chute 41, and are provided in advance in ranges where the two outlets 45a and 45b reach by the movement of the back main shaft 30, respectively. The weight of the fixed chutes 48 and 49 does not act on the main shaft 30. Therefore, the load acting on the back main shaft 30 can be reduced.

  In addition, it is preferable that the carrying-out apparatus 40 of the workpiece 1 of this embodiment is formed so that the exits 45a and 45b of the carrying-out rail 45 are higher than the other part of the bottom surface of the carrying-out rail 45. Since the outlets 45a and 45b are formed high, the work 1 held on the carry-out rail 45 is prevented or suppressed from unexpectedly falling from the outlets 45a and 45b during the movement period of the back spindle 30. Because it can be done.

  In the carry-out device 40 for the workpiece 1 according to the present embodiment, the chute body 43 of the turning chute 41 is constituted by the receiving cup 44 and the carry-out rail 45, but only by a box-like or bowl-like single chute body. It may be configured. In this case, a general box or bag can be applied as the chute body. Moreover, even if it is a thing which is not a general box or a basket, what formed the hole and notch corresponding to exit 45a, 45b in the wall surface of a chute | shoot main body can be applied. The same operation and effect as the unloading device 40 can also be exhibited by the workpiece unloading device having the chute body configured as described above.

  In addition, since the carrying-out apparatus 40 of this embodiment is provided with the carrying-out rail 45 extended in the direction (X direction; refer FIG. 1) where the front main shafts 10 and 20 are arranged, the back main shaft 30 is the front main shaft 10 or the front main shaft 20. The workpiece 1 can be transferred to the corresponding fixed chutes 48 and 49 only by tilting the back main shaft 30 without moving it in the X direction.

  In the unloading device 40 for the workpiece 1 according to the present embodiment, the fixed chutes 48 and 49 are not attached to the back main shaft 30 and are separated from the back main shaft 30. And may be moved between the shaft centers C1 and C2 integrally with the rear main shaft 30. In this case, the fixed chutes 48 and 49 can be rotated between the swivel chute 41 so as not to turn (for example, via a bearing or the like). The turning chute 41 may be integrated with the turning chute 41, or may be configured separately from the turning chute 41.

  As described above, according to the carry-out device having the configuration in which the fixed chutes 48 and 49 are attached to the back main shaft 30 side, the rotation operation of the turning chute 41 that guides the work 1 to the fixed chutes 48 and 49 can be minimized. It is possible to configure an unloading apparatus that can quickly shift to the next operation.

The automatic lathe 100 according to the present embodiment switches the selection of the collection boxes 51 and 52 to which the work is to be distributed between the workpiece 1 generated by the first front spindle 10 and the workpiece 1 generated by the second front spindle 20. The workpiece carry-out device according to the present invention does not have to switch the assignment destination for each front spindle.
In other words, the workpiece unloading apparatus according to the present invention may be configured to sort and unload one or more types of workpieces generated by a single front spindle to any one of two or more paths.

In the example of the present embodiment, the automatic lathe 100 may be configured by one front spindle 10 (or the front spindle 20), one back spindle 30, and the work 1 carry-out device 40. When 10 (or the front spindle 20) generates, for example, two or more types of workpieces 1, the carry-out device 40 may sort out the route for each type of the workpiece 1 and carry it out.
The automatic lathe 100 is composed of one front spindle 10 (or front spindle 20), one back spindle 30 and a work 1 unloading device 40, and the front spindle 10 (or front spindle 20). Even when one type of workpiece 1 is generated, the same type of workpiece 1 may be alternately distributed to different routes for the convenience of the subsequent process, or the route may be distributed between non-defective products and defective products. It may also be carried out.

  In the automatic lathe 100 according to the present embodiment, the workpiece 1 carry-out device 40 has a turning chute 41 attached to the back spindle 30, but the workpiece carry-out device according to the present invention has a receiving portion attached to the back spindle. However, the present invention is not limited thereto, and may be attached to another rotating shaft or the like provided in the automatic lathe 100.

The automatic lathe 100 according to this embodiment has two sets of fixed chutes 48 and 49 and collection boxes 51 and 52 as an example of a stacking unit, but the number of stacking units according to the present invention is two. It is not limited and can be three or more.
That is, for example, a stacking unit (for example, a set of a collection box and a fixed chute) is arranged in series (along the axial centers C1 and C2) on each side of the front main shafts 10 and 20 (stacking unit). 4 in total), by moving the back spindle 30 in the direction of the axis C3, selective to one of the two integrated sections arranged in series on the front spindles 10 and 20 side. You may make it carry out.

1 Work 10 First Front Main Spindle 20 Second Front Main Spindle 30 Back Main Spindle (Rotating Axis)
40 Unloading device 41 Rotating chute (receiving part)
42 Attaching part 43 Chute body 44 Receiving cup 44a Inclined surface 45 Unloading rail (unloading guide part)
45a, 45b Outlet 48 First fixed chute (guide section)
49 Second fixed chute (guide section)
51 First collection box (stacking unit)
52 Second collection box (stacking unit)
100 Automatic lathe C1, C2, C3 axis

Claims (5)

With a receiving part that accepts workpieces from the spindle side of the machine tool,
The receiving portion is attached to the rotating shaft so as to rotate integrally with a rotating shaft that rotates to face the main shaft,
The receiving part is formed with a plurality of outlets for carrying the work out to the outside.
Each of the outlets is provided so as to selectively carry out the workpiece received by the receiving unit corresponding to at least one of a rotation direction and a rotation angle of the receiving unit by the rotation shaft. The work unloading device.   The workpiece receiving apparatus according to claim 1, wherein the receiving unit is arranged such that an outlet for carrying out the workpiece is switched by switching a rotation direction.   The workpiece unloading apparatus according to claim 1, further comprising a stacking unit configured to stack the workpieces unloaded from the outlet corresponding to each of the outlets.   The workpiece unloading apparatus according to claim 3, further comprising a guide unit that guides the workpiece unloaded from the outlet to the stacking unit between each of the outlets and the corresponding stacking unit.   The receiving portion includes an inclined surface that slides down the received workpiece, and a bowl-shaped carry-out guide portion that is formed at both ends with the outlet that discharges the workpiece that has slipped down the inclined surface. The work carry-out device according to any one of claims 1 to 4.