JP2020078860A - Work temporarily receiving base - Google Patents

Abstract

To securely prevent an ejected processed work from being left behind.SOLUTION: A work temporarily receiving base 1 includes: a work temporarily receiving portion 2; a work ejecting portion 4; and a shoot 3 that guides the work from the temporarily receiving portion 2 to the ejecting portion 4. The work temporarily receiving base comprises a vertical swing member 10 provided such that both front end and rear end thereof are vertically swingable in correspondence with the temporarily receiving portion 2 and the ejecting portion 4 respectively and such that, while a processed work is present in the ejecting portion 4, a rear-side swing portion 14 at the rear end is pushed down by the work, so that a front-side swing portion 12 at the front end is railed to block setting of a pre-processed work onto the temporarily receiving portion 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a temporary work holder provided on a machine tool such as an NC lathe.

  A machine tool such as an NC lathe is provided with a work temporary support for temporarily transferring a work to and from a work spindle or the like. As the work temporary support, for example, in Patent Document 1, a provisional support for receiving a processed work on a temporary support surface on an upper surface is integrally provided with a chute for delivering the work from the temporary support surface to a delivery position, and a turret is provided. There is disclosed a structure in which a work can be discharged from a temporary receiving surface through a chute by an attached discharging member.

JP, 2008-194785, A

  In the conventional work temporary support, if the next work is processed without forgetting to take out the work from the payout position, there is a possibility that chips and the like will adhere to the processed work and damage it.

  Therefore, an object of the present invention is to provide a work temporary support that can reliably prevent forgetting to take out a processed work that has been dispensed.

In order to achieve the above-mentioned object, the invention according to claim 1 is provided with a work temporary receiving part, a work payout part, and a chute for guiding the work from the temporary receiving part to the payout part. It’s a temporary stand,
One end is provided on the temporary receiving portion and the other end is provided so as to be swingable in the vertical direction in correspondence with the payout portion. When the payout portion has the work, the other end is pushed down by the work. Thus, the vertical swing member is provided to prevent the work from being set on the temporary receiving portion by raising the one end.
According to a second aspect of the present invention, in the configuration of the first aspect, one end is located below the one end of the vertical swing member, and the other end is located above the other end of the vertical swing member. In a state in which the workpiece is horizontally swingable, the other end portion swings in a direction away from the dispensing portion by the workpiece while the one end portion is the vertical swing member when the workpiece is in the dispensing portion. A horizontal swinging member that swings to the lower side of the one end to prevent the one end from descending.
In order to achieve the above object, the invention according to claim 3 is provided with a workpiece temporary receiving portion, a workpiece dispensing portion, and a work for guiding the workpiece from the temporary receiving portion to the dispensing portion. It’s a temporary stand,
The provisional receiving portion is provided on one end side, and the payout portion is provided on the other end side, and both ends can be vertically swung. When the payout portion has the work, the payout portion is pushed down by the work. As a result, the temporary receiving portion is raised from a predetermined temporary receiving position to prevent the work from being set.
According to a fourth aspect of the present invention, in the configuration of the third aspect, one end portion is provided below the temporary receiving portion, and the other end portion is provided above the payout portion so as to be horizontally swingable. When the work is in the payout portion, the other end of the work is swung in a direction away from the payout part by the work, while the one end is swung below the temporary receiving part. It is characterized in that it is provided with a horizontal rocking member for preventing the lowering of the section.

According to the present invention, a procedure is established in which a work before processing cannot be set unless the processed work is taken out. Therefore, it is possible to reliably prevent forgetting to take out the processed work that has been dispensed, and there is no risk of forgetting to take out the processed work and damaging it. In addition, since it is possible to prevent forgetting mechanically without using a sensor, it is possible to suppress cost increase, and it is also possible to avoid occurrence of trouble due to sensor failure or malfunction caused by the influence of coolant or cutting chips.
In particular, according to the second and fourth aspects of the invention, in addition to the above effects, the adoption of the horizontal swinging member enables the vertical swinging member or the temporary work holder of the vertical swinging member when the processed work is in the payout portion It is possible to more reliably prevent the work set before processing by locking the swing.

It is a side view of the work temporary support of form 1. 6A and 6B are explanatory views of the operation of the up-and-down swing member of the form 1, where FIG. 7A shows a right rotation posture and FIG. 9B shows a left rotation posture. FIG. 3 is a plan view of the temporary work holder of the form 1, showing a state in which the material is set on the temporary holder and the horizontal swinging member is in the right turning posture. FIG. 3 is a plan view of the temporary work holder of the form 1, showing a state in which the product is dispensed to the dispenser and the horizontal swing member is in a left-turning posture. 9A and 9B are explanatory views of a modified example of the temporary work holder including only the vertical swinging member. FIG. 9A shows a left rotation posture of the vertical swinging member, and FIG. FIG. 3 is a side view of the temporary work holder of the form 2, where (A) shows a state in which there is no work, (B) shows a state in which products have been dispensed, and (C) shows a state in which materials have been set.

Embodiments of the present invention will be described below with reference to the drawings.
[Form 1]
FIG. 1 is an explanatory view showing an example of the work temporary support 1, and only the center O of the work spindle 30 (FIG. 3) is shown as being installed on an NC lathe not shown here. Further, here, the left-right direction of FIG. 1 (Y-axis direction of NC lathe) is the front-back direction of the work temporary support table 1, and the direction orthogonal to the paper surface (Z-axis direction of NC lathe) is the left-right direction of the work temporary support table 1. explain.
The work temporary support 1 shown by a solid line is a bar shape extending in the front-rear direction, and on the front side, a pre-processed or processed work carried into the machine (hereinafter, referred to as a work W when the front and back of the process are not specified, A V-shaped temporary receiving portion 2 for temporarily receiving an unprocessed workpiece on the upper surface is referred to as a material W1 and a processed workpiece is referred to as a product W2. . A chute 3 is formed on the rear side of the temporary receiving part 2 so as to incline downward as it goes backward, and a payout part 4 is provided at the rear end of the chute 3 to bend upward and receive the product W2. . Therefore, when the product W2 temporarily received on the temporary receiving unit 2 is pushed rearward by the payout member or the like provided on the turret (not shown), it reaches the chute 3 from the temporary receiving unit 2 and the chute 3 is inclined as it is. Then, it rolls backward and is paid out to the payout unit 4.

  On the left side of the temporary work holder 1 (on the side of the work spindle 30), a vertical swing member 10 shown by a two-dot chain line is provided so as to be parallel to the temporary work holder 1 in plan view. The vertical swinging member 10 is a bar-like member whose front and rear ends are swingably supported around a horizontal shaft 11 in the front-rear direction provided on a base (not shown) that supports the temporary work receiving base 1 from below. At the front end, there is formed a front swinging portion 12 that becomes a front receiving surface 13 that rises upward and the upper surface inclines rearward. Similarly, at the rear end as well, a rear swing portion 14 is formed which becomes a rear receiving surface 15 which rises upward and whose upper surface is inclined downward toward the front. The front swinging part 12 has a vertical swinging track overlapping with the temporary receiving part 2 in the left-right direction, and the rear swinging part 14 has a vertical moving track overlapping with the payout part 4 in the left-right direction. I'm wrapping. Further, here, the front swing portion 12 is formed to be larger in the front and rear than the rear swing portion 14, and the horizontal shaft 11 is eccentric to the rear swing portion 14.

As shown in FIG. 2A, when the work W is set on the temporary receiving portion 2, the vertical swinging member 10 allows the front swinging portion 12 to move by the work W being placed on the front receiving surface 13. It is pushed down and rotates rightward about the horizontal axis 11 in the figure, and the rightward rotation posture in which the front receiving surface 13 is arranged side by side with the front slope of the temporary receiving portion 2 is maintained. Further, even when the work W is not set on the temporary receiving portion 2, the heavy front swinging portion 12 is urged in the rightward rotating direction so that it is in the rightward rotating posture. At this time, the rear swinging portion 14 is projected above the payout portion 4.
On the other hand, as shown in FIG. 2B, in the state where the product W2 is dispensed to the dispensing part 4, the vertical swinging member 10 moves the product W2 onto the rear receiving surface 15 so that the rear swinging part 10 moves. 14 is pushed down to be in the left rotation posture in which it rotates left about the horizontal axis 11 in the figure. At this time, the front swinging portion 12 projects above the temporary receiving portion 2.

  On the other hand, a horizontal rocking member 20 shown by a dotted line in FIG. As shown in FIG. 3, the horizontal swinging member 20 is a bar whose front and rear ends are swingably supported in the left-right direction about a vertical axis 21 provided in the base of the temporary work receiving base 1 in the vertical direction. It is supported by the vertical shaft 21 in a posture inclining downward as it goes forward. The front side of the horizontal swinging member 20 extends until it reaches the underside of the work temporary support 1 and the vertical swinging member 10 in the left rotation posture, and a lock portion 22 protruding leftward is formed at the front end portion. There is. The upper surface of the lock portion 22 is an inclined surface 23 that inclines downward as it goes to the left. The rear side of the horizontal swinging member 20 extends to reach the upper side of the temporary work receiving base 1, and a taper portion 24 is formed at the rear end portion, the width of which widens in a plan view toward the rear side.

In the horizontal swinging member 20, the front swinging portion 12 of the vertical swinging member 10 is pushed down as shown in FIGS. 2A and 3 when the work W is set in the temporary receiving portion 2. As a result, the lock portion 22 in which the inclined surface 23 abuts an inclined surface (not shown) provided on the lower surface of the front swing portion 12 is biased to the right by the guide of the inclined surfaces. Therefore, the horizontal swinging member 20 rotates right about the vertical shaft 21 in the figure, the lock portion 22 moves away from the temporary work holder 1 to the right in plan view, and a part of the taper portion 24 of the payout portion 4 is provided. It is in a right-turning posture that overlaps the upper side.
On the other hand, when the product W2 delivered from the temporary receiving portion 2 rolls on the chute 3, the right end of the product W contacts the taper portion 24 as shown in FIG. Pressed to the right. Therefore, the horizontal swing member 20 rotates counterclockwise around the vertical shaft 21 in the figure, and the lock portion 22 is located below the front swing portion 12 of the temporary work holder 1 and the vertical swing member 10 in plan view. Due to the overlap, the tapered portion 24 is in the left turning posture in which the tapered portion 24 separates from the product W2 to the right.
In addition, on the left side of the temporary work receiving table 1, the same bar members having the temporary receiving part 2, the chute 3, and the payout part 4 are arranged in parallel at a predetermined interval so that the work W is received by the pair of bar members. However, it is omitted in FIGS.

In the temporary work holder 1 configured as described above, when the product W2 is unclamped from the workpiece main shaft 30 and set in the temporary receiver 2, the vertical swing member 10 is moved by the product W2 as described above. The front swinging part 12 descends and the rear swinging part 14 rises to the right rotation posture shown in FIG. 2A, and the horizontal swinging member 20 moves the lock part 22 to the right side when the front swinging part 12 descends. 3 and the tapered portion 24 moves to the left, which is the right turning posture of FIG.
From here, when the product W2 is transferred from the temporary receiving unit 2 onto the chute 3 and is paid out to the payout unit 4, the vertical swinging member 10 causes the product W2 to move the rear swinging unit 14 downward and the front swinging unit 10. 2 is in the left rotation posture of FIG. 2B, and the horizontal swinging member 20 has the left rotation posture of FIG. 4 in which the taper portion 24 moves to the right side and the lock portion 22 moves to the left side due to the product W2. Become.

In this state, the up-down swing member 10 interferes with the lock portion 22 of the horizontal swing member 20 located on the lower side to prevent the front swing portion 12 from descending to maintain the left rotation posture. Unless the product W2 is taken out from the material W4, the material W1 cannot be set on the temporary receiving portion 2 by the front swinging portion 12 protruding upward from the temporary receiving portion 2.
When the product W2 is taken out from the dispensing unit 4, the vertical swinging member 10 is allowed to rotate to the right and returns to the right rotation posture, and the horizontal swinging member 20 also returns to the right swinging posture. W1 can be set.

As described above, according to the temporary work receiving base 1 of the above-described mode 1, the front end is provided to the temporary receiving part 2 and the rear end is provided so as to be swingable in the vertical direction so as to correspond to the paying-out part 4, respectively. 4 has the product W2, the rear swing part 14 at the rear end is pushed down by the product W2, and the front swing part 12 at the front end rises to prevent the material W1 from being set on the temporary receiving part 2. Since the vertical swinging member 10 is provided, a procedure is established in which the material W1 cannot be set without taking out the product W2. Therefore, it is possible to reliably prevent forgetting to take out the dispensed product W2, and there is no risk of forgetting to take out the product W2 and damaging it.
In addition, since it is possible to prevent forgetting mechanically without using a sensor, it is possible to suppress cost increase, and it is also possible to avoid occurrence of trouble due to sensor failure or malfunction caused by the influence of coolant or cutting chips.

  Particularly, here, the lock portion 22 at the front end is located below the front swing portion 12 of the vertical swing member 10, and the taper portion 24 at the rear end is located above the rear swing portion 14 of the vertical swing member 10. In a state where the product W2 is provided so as to be swingable in the horizontal direction, and the product W2 is in the payout part 4, the taper part 24 is swung in the direction away from the payout part 4 by the product W2, while the lock part 22 of the vertical swing member 10 is provided. Since the horizontal swing member 20 that swings to the lower side of the front swing unit 12 and prevents the front swing unit 12 from descending is further provided, the vertical swing member 10 when the product W2 is in the payout unit 4 is provided. It is possible to more reliably prevent the setting of the material W1 by locking the right rotation of the.

In the first embodiment, a horizontal swinging member is provided on the temporary work holder to surely prevent the vertical swinging member from turning to the right when the product is in the payout portion. The member can be omitted.
That is, as shown in FIG. 5A, when the product W2 is dispensed to the dispensing unit 4, the vertical swinging member 10 is in the left rotation posture and the front swinging unit 12 is above the temporary receiving unit 2. The material W1 cannot be set at the temporary receiving position on the temporary receiving portion 2 because it is projected. Therefore, even if the machine tool is started up as it is, the workpiece W1 cannot be clamped by the work spindle 30 because the material W1 is not in the temporary receiving position, and the clamp signal does not turn ON, so that the machine tool stops in alarm.
On the other hand, when the product W2 is taken out from the payout part 4, the vertical swinging member 10 is returned to the right rotation posture by the front swinging part 12 descending, so that the material W1 moves to the front receiving surface 13 and the temporary receiving part 2. Due to the inclination, it moves to the temporary receiving position.
If the horizontal rocking member is omitted in this way, the number of parts can be reduced, which is advantageous in terms of cost.

[Form 2]
In the work temporary support 1 of the above-described mode 1, the temporary support part 2 and the payout part 4 are fixed and the vertical swinging member 10 is used to prevent the product W2 from being forgotten. The same purpose can be achieved even if the table itself can be swung in the vertical direction. Hereinafter, this mode will be described, but the same components as in Mode 1 will be assigned the same reference numerals and overlapping description will be omitted.
The work temporary support 1A shown in FIG. 6(A) is supported on the base so that the front and rear ends can swing vertically around the horizontal shaft 11, but the horizontal shaft 11 is eccentric to the payout portion 4 side. As a result, the temporary receiving portion 2 is normally biased to the right rotation posture shown in FIG.

Here, when the product W2 is dispensed to the dispensing unit 4, the temporary work holder 1A is located on the right side of the center O of the work spindle 30 as the temporary work holder 2 moves up as shown in FIG. 6(B). With the left rotation posture, the temporary receiving part 2 is displaced upward from the temporary receiving position for transferring the material W1 to the work spindle 30. As a result, the material W1 cannot be temporarily received and the workpiece spindle 30 cannot clamp the material W1.
On the other hand, when the product W2 is taken out from the payout unit 4, as shown in FIG. 6C, the temporary work receiving base 1A is returned to the right rotation posture shown in FIG. The temporary receiving section 2 returns to the temporary receiving position for transferring the material W1 to the work spindle 30. This enables the temporary reception of the material W1 and the clamping of the material W1 by the work spindle 30.

As described above, also in the work provisional receiving base 1A of the above-described mode 2, the provisional receiving portion 2 is provided on the front end side and the payout portion 4 is provided on the rear end side so that both ends can be swung in the vertical direction. In the state where the product W2 is present in the product W2, the dispensing unit 4 is pushed down by the product W2, and the temporary receiving unit 2 rises from a predetermined temporary receiving position to prevent the setting of the material W1. A procedure is established in which W1 cannot be set. Therefore, it is possible to reliably prevent forgetting to take out the dispensed product W2, and there is no risk of forgetting to take out the product W2 and damaging it.
In particular, in the form 2, since the temporary work cradle 1A itself swings to prevent the material W1 from being set before taking out the product W2, only the form 1 using the vertical swinging member and the horizontal swinging member or the vertical swinging member. The number of parts is further reduced as compared with the modified example using, which leads to further cost reduction.

  However, also in the second embodiment, the horizontal swinging member 20 of the first embodiment is used, and the lock portion 22 at the front end is located below the temporary receiving portion 2 of the temporary work holder 1A, and the taper portion 24 at the rear end is temporarily moved. When the product W2 is provided in the payout part 4, the horizontal swinging member 20 and the taper part 24 are provided by the product W2. The lock portion 22 may be swung in the direction away from the payout portion 4 while the lock portion 22 is swung below the temporary receiving portion 2 of the temporary work receiving base 1A to prevent the temporary receiving portion 2 from descending. In this case as well, it is possible to more reliably prevent the setting of the material W1 by locking the right rotation of the temporary work holder 1A when the product W2 is in the payout section 4.

In addition, in common with each of the forms, the specific structures of the temporary receiving part, the payout part, the chute, and the specific structures of the up-down swing member and the horizontal swing member are not limited to the examples of the above-described forms, but can be appropriately changed is there.
For example, the horizontal rocking member omits one of the upper surface of the lock portion and the inclined surface of the lower surface of the front rocking portion, or biasing means for biasing the horizontal rocking member to the left turning posture instead of such inclination. (A torsion spring or the like provided on the vertical axis) may be provided. The urging means may be provided on the work temporary support of form 2.
Further, the orientation and arrangement of the work temporary stand are not limited to the above-mentioned form, and the work temporary stand can be adopted in machine tools other than the NC lathe.

  1, 1A ··· Work provisional stand 2, · · Temporary receiving part 3, · · Chute 4, · · Dispensing part, 10 · · Vertical swing member, 11 · · Horizontal shaft, 12 · · Front swing part, 13... Front receiving surface, 14... Rear swinging portion, 15... Rear receiving surface, 20... Horizontal swinging member, 21... Vertical shaft, 22... Lock portion, 23... Tapered portion, 30 ..Work spindle, W...Work (W1: material, W2: product).

Claims (4)

A work provisional receiving stand comprising a work provisional receiving portion, the work delivering portion, and a chute for guiding the work from the provisional receiving portion to the delivery portion,
One end is provided on the temporary receiving portion and the other end is provided so as to be swingable in the vertical direction in correspondence with the payout portion. When the payout portion has the work, the other end is pushed down by the work. The temporary work holder is provided with a vertical swinging member that raises the one end to prevent the workpiece from being set on the temporary receiver.   One end of the vertical swing member is positioned below the one end, and the other end of the vertical swing member is positioned above the other end of the vertical swing member so as to be swingable in the horizontal direction. In this state, the other end oscillates in the direction away from the payout part by the work, while the one end oscillates below the one end of the vertical oscillating member to lower the one end. The temporary work holder according to claim 1, further comprising a horizontal swinging member that blocks the work. A work provisional receiving stand comprising a work provisional receiving portion, the work delivering portion, and a chute for guiding the work from the provisional receiving portion to the delivery portion,
The provisional receiving portion is provided on one end side, and the payout portion is provided on the other end side, and both ends can be vertically swung. When the payout portion has the work, the payout portion is pushed down by the work. By this, the temporary receiving part rises from a predetermined temporary receiving position to prevent the setting of the work, and the temporary work receiving base.   One end is located below the temporary receiving part and the other end is located above the payout part so as to be horizontally swingable. When the payout part has the work, the other end is The work includes a horizontal swinging member that swings in a direction away from the payout portion, while the one end swings downward of the temporary receiving portion to prevent the temporary receiving portion from descending. The temporary work cradle according to claim 3, which is characterized in that.

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