JPH11844A - Jig pallet storage device for machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and efficiently change a jig pallet on a jig table. SOLUTION: This jig pallet storage device is provided with first and second cradles 58, 60 constructed in two upper and lower stages, an elevating mechanism 62 to integrally elevate the first and second cradles 58, 60 and capable of positioning any one of the first and second cradles 58, 60 corresponding to the horizontal position of a jib table and a stopper mechanism 84 to prevent the falling of a jig pallet 44 from the first and second cradles 58, 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for a machine tool for interchangeably accommodating a work holding jig pallet attached to a jig table rotatable about an axis intersecting in a vertical direction. The present invention relates to a pallet storage device.

[0002]

2. Description of the Related Art A jig table is used for positioning a work in a predetermined posture with respect to a machine tool.
The jig table is configured so as to index and position the work with respect to a desired processing tool of a machine tool by rotating the work by a predetermined angle around an axis intersecting in a vertical direction in a state where the work is mounted. ing.

In this case, a jig pallet is mounted on the jig table for positioning and holding a work.
The jig pallet corresponds to the shape of the work, and when a work having a different shape is used, it is necessary to exchange the jig pallet for a new work.

[0004]

However, since the jig pallet is relatively heavy, a problem has been pointed out that an excessive burden is imposed on an operator when exchanging the jig pallet. In particular, when processing various types of workpieces, the replacement work of the jig pallet is frequently performed, and the replacement work of the jig pallet becomes complicated, and the entire replacement work of the jig pallet is performed. There is a problem that efficiency cannot be achieved.

The present invention solves this kind of problem, and can easily and quickly perform the work of exchanging a jig pallet for a jig table, thereby improving the efficiency of the work of exchanging the jig pallet. An object of the present invention is to provide a jig pallet storage device of a machine tool which can be achieved.

[0006]

In order to solve the above-mentioned problems, a jig pallet accommodating apparatus for a machine tool according to the present invention is arranged in multiple stages in the vertical direction and can be integrally moved up and down via an elevating mechanism. It has multiple cradle. Therefore, at least one receiving stand is emptied, first, the empty receiving stand is positioned corresponding to the horizontal position of the jig table, and the jig pallet is removed from the jig table to remove the empty receiving stand. To support. At this time, the receiving table is provided with a stopper mechanism, which can prevent the jig pallet supported by the receiving table from falling off.

Next, after the support supporting the new jig pallet is positioned corresponding to the horizontal position of the jig table, the new jig pallet is attached to the jig table and newly set. A predetermined work is performed on a simple work. This simplifies the handling operation of the jig pallet and makes it possible to easily and quickly exchange the jig pallet with the jig table.

The pedestal has a pair of fork members for supporting both sides of the jig pallet. Therefore, the weight of the entire cradle can be reduced, and the elevating mechanism can be effectively reduced in size.

The elevating mechanism has a plate that moves up and down under the action of an actuator. A pedestal is attached to this plate, and at least one of the pedestals is connected to the plate via height adjustment means. The height can be adjusted with respect to the plate. Accordingly, the receiving table can be positioned with high precision and easily in accordance with the horizontal position of the jig table.

[0010] Furthermore, the stopper mechanism includes a locking member to which one end of the jig pallet is abutted and supported, and a movable clamper which can be moved close to and away from the end of the jig pallet. This makes it possible to reliably hold the jig pallet with the receiving table with a simple configuration.

[0011]

FIG. 1 is a schematic front view of a multi-axis head type machine tool 10 in which a jig pallet accommodating apparatus according to an embodiment of the present invention is incorporated, and FIG.
0 is a schematic plan view.

The machine tool 10 circulates and transports a column 12 erected on a machine base 11 and a plurality of multi-axis heads 16 mounted with a number of tools 14 along a vertical plane, and is supported by the column 12. An annular conveying means 18; a slide table 20 disposed on the side surface 12a of the column 12 so as to be able to advance and retreat in a horizontal direction (direction of arrow A); and a work W provided on the slide table 20 is mounted. And a jig table 22.

As shown in FIG. 1, the annular conveying means 18 comprises:
The rotary drive source 26 is provided, and chains 28a and 28b engaged with the rotary drive source 26 circulate and transport the multi-axis head 16 in the direction of arrow B. A rotation drive source 30 for integrally rotating the plurality of tools 14 of one multi-axis head 16 held in a horizontal posture, which is a processing posture, is mounted in the annular conveyance means 18.

As shown in FIG. 2, a stock means 32 is provided in parallel with the annular conveying means 18 and a multi-axis head 16 is automatically disposed between the stock means 32 and the annular conveying means 18. A multi-axis head exchange mechanism 34 for exchanging the head is provided.

As shown in FIG. 1, guide rails 36 are provided on the side surface 12a of the column 12 at predetermined intervals in the vertical direction.
a, 36b are provided, and a rotary drive source 38 is mounted near the lower guide rail 36b. A ball screw 40 extending in the direction of arrow A is connected to the rotary drive source 38, and the ball screw 40 meshes with a nut member 42 provided on the slide table 20.

A jig table 22 is mounted on a vertically extending surface of the slide table 20 via a servo motor (not shown) so as to be rotatable about an axis intersecting the vertical direction. A jig pallet 44 for positioning and holding the workpiece W is exchangeably attached to the jig table 22.

A pallet exchange position P at which the jig table 22 is maintained in a horizontal position is provided at a retracted position of the slide table 20 in the direction of arrow A1. The side (arrow A) of the jig table 22 disposed at the pallet exchange position P
(One direction), the jig pallet storage device 50 according to the present embodiment is mounted.

The jig pallet storage device 50 includes a base 54 mounted on a mounting table 52 fixed to the side of the machine base 11.
And a gate-shaped frame member 56 is erected on the base 54. The frame member 56 has first and second receiving tables 58 and 60 arranged in multiple stages in the vertical direction, for example, two stages.
And the first and second receiving trays 58 and 60 are integrally moved up and down, and any one of the first and second receiving trays 58 and 60 is moved to the horizontal position of the jig table 22 (the pallet exchange position P ) And a positionable lifting mechanism 62 are provided (see FIGS. 1 and 3).

As shown in FIGS. 4 to 6, the lifting mechanism 62
Has an actuator, e.g., a cylinder 64, which is installed in a substantially central portion of the base 54 so as to extend vertically upward, and a mounting member 68 is attached to a piston rod 66 extending vertically upward from the cylinder 64. It is fixed. A plate 72 is fixed to the mounting member 68 via an adjustment bolt 70 so as to be finely adjustable in the vertical direction (see FIG. 4). Base 5
4 is provided with a pair of guide bars 74 located on both sides of the cylinder 64, and each guide bar 74 is inserted into the cylinders 76 a and 76 b fixed to the plate 72 to guide the plate 72.

A first receiving base 58 is fixed to the lower end of the plate 72 extending in the vertical direction. As shown in FIGS. 3 to 5, the first receiving base 58 includes a first angle member 80 fixed to the plate 72 via bolts 78, and a pair of first angle members 80 fixed to both sides of the first angle member 80. Of the first fork members 82a, 82b. The first fork members 82 a and 82 b are
4a, 44b.
a, 44b to hold the jig pallet 44.

A stopper mechanism 8 for preventing the jig pallet 44 from falling off is provided on the first receiving stand 58 and the plate 72.
4 are provided. As shown in FIGS. 3, 5 and 6,
The stopper mechanism 84 includes a pair of locking members 86 a and 86 b which are screwed to the plate 72 and abut and support one end of the jig pallet 44, and a movable member which is freely movable toward and away from the other end of the jig pallet 44. And a clamper 88.

The movable clamper 88 includes the first fork member 8.
The other first fork member 82b is swingably supported on the side end of the side 2a via a fulcrum 90 in the direction of insertion of the jig pallet 44 (in the direction of arrow A1). A tapered engagement surface 92 that slopes to the side is provided. The movable clamper 88 is always moved by an arrow C via a spring 94.
In addition to being urged in the horizontal direction, a handle 96 that is elongated in the vertical direction is fixed to the swinging tip side of the movable clamper 88 after extending in the horizontal direction.

The second receiving stand 60 includes a second angle member 98 fixed to the upper end of the plate 72 and a pair of second fork members 100a and 100b fixed to both sides of the second angle member 98. The same components as those of the first cradle 58 are denoted by the same reference numerals, and a detailed description thereof will be omitted.

In the second receiving stand 60, the second angle member 98
The height of the plate 72 can be adjusted via the height adjusting means 102. The height adjusting means 102 includes mounting portions 104a and 104b fixed to the plate 72 corresponding to the lower end of the second angle member 98, and the second angle is directed to the mounting portions 104a and 104b in the vertical direction. An adjusting bolt 106a that contacts the lower end of the member 98;
106b is screwed. The second angle member 98 is formed with a long hole 110 in a vertical direction for inserting a plurality of bolts 108 for fixing the second angle member 98 to the plate 72.

Next, the operation of the jig pallet storage device 50 thus configured will be described in relation to the machine tool 10.

First, as shown in FIGS. 1 and 2, after the workpiece W is held on the jig pallet 44 of the jig table 22, the rotation drive source 38 is driven to rotate the ball screw 40. And the slide table 20 is the guide rail 3
It moves in the direction of arrow A2 along 6a and 36b. When the workpiece W is placed at a predetermined processing position, the plurality of tools 14 mounted on one multi-axis head 16 rotate integrally under the action of the rotation drive source 30. Thus, a desired processing operation is performed on the workpiece W.

When the work of processing the workpiece W is completed, the jig table 22 is transferred to, for example, a pallet exchange position P and maintained in a horizontal posture. An exchange operation with the workpiece W before processing is performed. Next, a desired processing operation is performed on the workpiece W before processing attached to the jig pallet 44.

By the way, in order to perform a processing operation on a workpiece W having a different shape, in the jig pallet storage device 50, for example, the first receiving table 58 is kept empty while the second receiving table 58 is kept empty. A new jig pallet 44 corresponding to a new workpiece W is placed on the table 60.

Then, the jig table 22 is delivered to the pallet exchange position P via the slide table 20, and the jig pallet 44 is arranged at a horizontal position integrally with the jig table 22. In the jig pallet storage device 50, the piston rod 66 advances vertically upward under the action of the cylinder 64 constituting the elevating mechanism 62, and the lower side corresponds to the jig table 22 disposed at the pallet exchange position P. Is positioned (see FIG. 7A).

Next, the jig pallet 44 is removed from the jig table 22, and the jig pallet 44 is slid from the jig table 22 toward the first receiving table 58 (in the direction of arrow A1). For this reason, the jig pallet 44 is moved in the direction of the arrow A1 with the side portions 44a and 44b being held by the first fork members 82a and 82b.

At this time, the jig pallet 44 constitutes a stopper mechanism 84 and the first fork member 82a of the first receiving stand 58
The movable clamper 88 abuts on the engaging surface 92 of the movable clamper 88 mounted on the movable clamper 88, and forcibly swings the movable clamper 88 in the direction of arrow D against the spring 94. When the jig pallet 44 moves in the direction of arrow A1 and the jig pallet 44 separates from the engagement surface 92, the movable clamper 88 moves around the fulcrum 90 in the direction of arrow C through the elastic force of the spring 94. Rocks. As a result, the jig pallet 44 has the two ends 44a, 44b mounted on the first fork members 82a, 82b, and one end of the jig pallet 44 is engaged with the locking members 86a, 86b.
And the other end side is locked by a movable clamper 88, and the jig pallet 44 is accurately and reliably held on the first receiving stand 58.

The used jig pallet 44 is moved to the first receiving tray 58.
, The cylinder 64 constituting the elevating mechanism 62
Is driven, and the piston rod 66 moves to the lowermost position. When the piston rod 66 descends, the plate 72 descends via the mounting member 68, and this plate 72
The second receiving table 60 fixed to the jig table 22 is positioned corresponding to the jig table 22 arranged in a horizontal posture at the pallet exchange position P (see FIG. 7B).

A new jig pallet 44 is held in the second receiving stand 60 in advance.
The movable clamper 88 is gripped by the handle 96 of the movable clamper 88 attached thereto, and the movable clamper 88 is forcibly swung in the direction of arrow D to hold the movable clamper 88 at a position where the movable clamper 88 is separated from the jig pallet 44. In this state, the jig pallet 44
Under the guiding action of the second fork members 100a, 100b,
The jig pallet 44 is moved in the direction of arrow A2,
The jig is transferred from the cradle 60 to the jig table 22. After the jig pallet 44 is fixed to the jig table 22, a desired processing operation is performed on a new workpiece W via the jig pallet 44.

In this case, in this embodiment, the first and second receiving tables 58 and 60 are vertically arranged in two stages in the vicinity of the pallet changing position P where the jig table 22 is arranged in a horizontal posture. And the first and second cradle 58,
60 is selectively positioned corresponding to the horizontal position of the jig table 22 under the action of the lifting mechanism 62. For this reason, for example, the first receiving stand 58 is emptied, a new jig pallet 44 is placed on the second receiving stand 60, and the jig table 2 is
After transferring and holding the used jig pallet 44 from 2 to the first receiving table 58, a new jig pallet 44 can be sent out from the second receiving table 60 to the jig table 22.

As a result, in the present embodiment, the effect of easily and quickly performing the work of replacing the jig pallet 44 with the jig table 22 with a simple configuration can be obtained. In particular, it is only necessary to slide the jig pallet 44 between the jig table 22 and the first and second receiving tables 58 and 60, which has the advantage that the burden on the operator is reduced and the operability is improved all at once. is there.

Further, a stopper mechanism 84 is provided on the first and second receiving tables 58 and 60, and ensures that the jig pallet 44 is detached from the first and second receiving tables 58 and 60. It becomes possible to prevent. Therefore, there is an effect that workability at the time of exchanging the jig pallet 44 is effectively improved.

The first and second receiving tables 58 and 60 are
A pair of fork members 82 each extending in the direction of arrow A
a, 82b and 100a, 100b. Therefore, the first and second receiving tables 58 and 60 can be lightened at once, and the load (moment) acting on the plate 72 supporting the first and second receiving tables 58 and 60 can be reduced. Further miniaturization of the cylinder 64 constituting the cylinder 62 is achieved.

Further, in the present embodiment, the lifting mechanism 6
2 can be finely adjusted up and down via adjustment bolts 70, and the height of the second receiving stand 60 is higher than the height of the first receiving stand 58 via the height adjusting means 102. Adjustable. Thereby, the first and second receiving tables 58 and 60 can be positioned and arranged with high accuracy with respect to the jig table 22 arranged at the pallet exchange position P, and the exchange work of the jig pallet 44 can be performed smoothly and smoothly. It will be performed reliably.

[0039]

As described above, in the jig pallet accommodating apparatus for a machine tool according to the present invention, a plurality of pedestals arranged in multiple stages in the vertical direction beside the jig table are provided via the elevating mechanism. The jig table moves up and down integrally, and the empty receiving table is positioned corresponding to the horizontal position of the jig table. Next, after the jig pallet is transferred from the jig table to the empty cradle, the cradle on which the new jig table is placed is positioned corresponding to the jig table, and the new jig is set. The pallet is sent out to the jig table.

Thus, the jig pallet changing operation can be performed easily and quickly, and the workability can be improved at once. Further, the provision of the stopper mechanism for preventing the jig pallet from dropping from the cradle allows the jig pallet replacement operation to be performed more efficiently and easily.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a machine tool incorporating a jig pallet storage device according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the machine tool.

FIG. 3 is an explanatory perspective view of the jig pallet storage device.

FIG. 4 is an explanatory front view of the jig pallet storage device.

FIG. 5 is an explanatory side view of the jig pallet storage device.

FIG. 6 is an explanatory plan view of the jig pallet storage device.

FIG. 7A is an explanatory view when a jig pallet is transferred to a first receiving table that constitutes the jig pallet accommodating device. FIG. 7B is a diagram illustrating a second example that constitutes the jig pallet accommodating device. It is explanatory drawing at the time of sending out a new jig pallet from a receiving stand.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Machine tool 16 ... Multi-axis head 18 ... Annular conveyance means 20 ... Slide table 22 ... Jig table 50 ... Jig pallet storage device 56 ... Frame member 58, 60 ... Cradle 62 ... Elevating mechanism 64 ... Cylinder 70, 108 ... Bolts 72 ... Plates 80, 98 ... Angle members 82a, 82b, 100a, 100b ... Fork members 84 ... Stopper mechanism 102 ... Height adjusting means 110 ... Elongated hole

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenichi Yokoyama 1-10-1 Shinsayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd.

Claims (4)

[Claims] 1. A jig pallet accommodating apparatus for a machine tool for interchangeably accommodating a jig pallet for holding a work attached to a jig table rotatable about an axis crossing a vertical direction. A plurality of pedestals arranged on the side of the jig table and arranged in multiple stages in the up-down direction to support the jig pallet; A lifting mechanism capable of positioning one of the jig tables in accordance with the horizontal position of the jig table; and a stopper mechanism for preventing the jig pallet from dropping from the receiving table. Jig pallet storage device. 2. The jig pallet accommodating device according to claim 1, wherein said receiving table includes a pair of fork members for supporting both side portions of said jig pallet. apparatus. 3. The jig pallet storage device according to claim 1, wherein the lifting mechanism moves up and down under the action of an actuator, and further includes a plate on which the receiving table is attached, and at least one of the receiving table. A jig pallet accommodating device for a machine tool, comprising: height adjusting means capable of adjusting the height of the plate. 4. The jig pallet accommodating device according to claim 1, wherein the stopper mechanism comprises: a locking member for supporting one end of the jig pallet; and the one end of the jig pallet. A jig pallet accommodating device for a machine tool, comprising: a movable clamper which can be freely moved toward and away from the other end.