JPS6244343A - Automatic pallet exchanger - Google Patents

Abstract

PURPOSE:To reduce a space for stacking standing-by pallets by providing a drive shaft inclined pi/4 to either of horizontal and vertical planes and n pallet support shafts extending in the direction inclined 2pi/3 to the drive shaft. CONSTITUTION:A drive shaft 4 is inclined pi/4 to either of horizontal and vertical planes, and rotates by 2pi/n every time. Pallet support shafts 5 extend in the direction inclined 2pi/3 to the drive shaft 4 and branched into n shafts spaced angularly at equal angle from each other. One of n pallet support shafts 5 projects toward a working area to work a workpiece 7 on a pallet 6 mounted on the support shaft 5 so that the workpiece in other area can be mounted and removed. Thus, the workpiece 7 is not in the common plane so that a large space is not needed.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an automatic pallet changing device.

In particular, it relates to an improvement that reduces the area in which pallets are placed that are waiting for their order to be installed prior to processing or for pallets that are waiting for their order to be removed after processing has been completed.

[Conventional technology]

In machine tools, especially machining centers, in order to allow the workpiece to be easily and accurately mounted at the machining position, the workpiece is once mounted on a pallet/pallet, and this pallet is mounted at a predetermined position. They are often designed to be installed easily and accurately. Machine tools that use this pallet are designed to easily attach the pallet to the machining position of the machine tool, but it is not always easy to attach the workpiece to the pallet. It takes quite a while.

[Problem that the invention seeks to solve]

Therefore, we prepare multiple pallets for one machine tool and attach workpieces to them in advance, and after machining is completed, we temporarily move them outside the machining area and place them on other workpieces. It is necessary to remove the workpiece from the pallet while the workpiece is being processed.

However, in the conventional automatic pallet changer, the top surfaces of the pallets are placed in a common parallel top surface, and therefore a large space is required to place these waiting pallets.

The purpose of the present invention is to eliminate this drawback, and the area where pallets are placed is placed where pallets are placed waiting for their order to be installed prior to machining or pallets that are waiting for their order to be removed after machining is completed. The object of the present invention is to provide a reduced automatic pallet changing device.

[Means for solving problems]

The means taken by the present invention to achieve the object set forth in item L are as follows: n
When automatically exchanging pallets, one drive shaft 4 is provided whose projection onto the horizontal plane and projection onto the vertical plane are both inclined by π/4 with respect to the direction of the spindle. 3. N pallet support shafts 5 are provided so as to extend in the inclination direction and intersect with each other at equal angles, and the n pallets 7 are supported by the n ballet support shafts 5. That's what I decided to do.

[Effect]

The present invention assumes a sphere whose center is at the tip of the drive shaft,
extending n pallet support shafts toward the surface of the sphere in a direction spatially symmetrical with respect to the extension line of the drive shaft;
A pallet is attached to each of these n pallet support shafts. In other words, when the drive shaft is the handle of an umbrella, the pallet support shaft is spread out in the direction of the rib of the umbrella, and the pallet is provided at the tip of the shaft. and,
Each time the drive shaft rotates 2π/n, the pallet is brought to the same position one after another.
The processing area is defined as the position where the pallet is brought every time it rotates by π/n.

〔Example〕

The automatic valent exchange device according to the present invention will be further described below with reference to the drawings.

See Figures 1 and 2. FIG. 1 is a side view, and FIG. 2 is a plan view.

In the figure, 1 is a bed, and 2 is a column, which is movable in the left-right direction in the figure.

3 is a spindle, the tip area of which is a processing area.

Reference numeral 4 denotes a drive shaft, and its projection onto the horizontal plane (the surface of the bed 1) and the projection onto the claw surface (the plane of the paper in FIG. 1) are tilted by π/4 with respect to the direction of the spindle 3. This drive shaft 4 rotates by 2π/n.

Reference numeral 5 denotes a pallet support shaft, which extends in a direction inclined by 2π/3 with respect to the extension line 4a of the drive shaft 4, and is spread out so as to form an equal angle with each other (just like the bones of an umbrella). Figure 0 shows the case where the number of valley/l'' support shafts 5 is 3. Among the n pallet support shafts 5, the one that protrudes toward the processing area must be on the same line as the spindle 3. Be realistic.

Reference numeral 6 denotes a pallet, which is attached perpendicularly to the pallet support shaft 5, and a workpiece 7 shown by a broken line is attached to this pallet.

As mentioned above, one of the n pallet support shafts 5 protrudes toward the processing area, and this pallet support shaft 5
The workpiece 7 attached to the pallet 6 is machined. In the meantime, another workpiece 7 is attached to one of the pallets 6 attached to the other pallet support shaft 5, and machining is completed from the pallet 6 attached to the third pallet support shaft 5. The processed object 7 is removed. There is no particular limit to the number of pallet support shafts 5, but three is the most practical.

〔Effect of the invention〕

As explained above, the automatic pallet changing device according to the present invention having n pallets has one drive shaft whose projection onto the horizontal plane and projection onto the vertical plane are both inclined by π/4 with respect to the direction of the spindle. , has n tree pallet support shafts that extend in a direction inclined by 2π/3, make equal angles with this drive shaft, and support the n pallets, so 1
While a workpiece is attached to one pallet and being machined, the next workpiece to be machined can be attached to another pallet, and the third pallet can be used to complete processing. It is possible to remove the workpieces that have been removed, and these workpieces are not in a common parallel plane, as in the prior art, so that the waiting pallet requires an unreasonably large amount of space. This disadvantage, which was inevitable in the prior art, has been solved.

[Brief explanation of drawings]

FIG. 1 is a side view of an automatic pallet exchange device according to an embodiment of the present invention. FIG. 2 is a plan view of an automatic pallet exchange device according to an embodiment of the present invention. 11. Bed, 21. Column, 3. Spindle, 4. Drive shaft, 5. Pallet support shaft, 6. Pallet, 7. Workpiece.

Claims (1)

[Claims] In an automatic pallet exchange device that sequentially and automatically brings n pallets (7) to a processing area, the projection onto the horizontal plane and the projection onto the vertical plane are both at an angle of π/4 with respect to the direction of the spindle. one drive shaft (4) extending in a direction inclined by 2π/3 with the drive shaft (4), forming equal angles with each other, and supporting the n pallets (7); An automatic pallet changing device having a support shaft (5).