JPH0420732B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a table device for multi-face processing of a workpiece,
For example, the present invention relates to a work table device for multi-face machining of a cubic or polygonal workpiece in a machine tool that processes the workpiece with a vertical or horizontal cutting tool.

[Conventional technology]

In recent years, machine tools called machining centers that can perform several types of cutting and drilling on the same table have come into widespread use, and the machining steps and machining time for workpieces have been significantly shortened. Generally, in machine tools, in order to perform several types of machining on a workpiece, the table holding the workpiece is usually moved in the left-right direction (hereinafter referred to as the x-axis direction) and the front-back direction (hereinafter referred to as the y-axis direction), and then the side surface of the workpiece is moved. A combination of tilting the table and machining is performed. As an example of a work table device having such a function, Japanese Patent Publication No. 58-2022 discloses a tilt table mechanism capable of machining up to five surfaces without changing the workpiece setup.

[Problem that the invention seeks to solve]

For example, in order to machine six sides of a workpiece on one vertical machining center, the workpiece must be changed at least once, and once the workpiece is removed, it takes time and effort to position it for the next machining. It takes time. Particularly when high-precision machining is required for a workpiece, first a surface that will be used as a reference for machining is machined, then the machined reference surface is held on a table for accurate positioning, and then other Although it is considered best to machine these surfaces, the worktables in conventional machine tools are insufficient to perform these operations rationally and efficiently.

[Means for solving problems]

In the present invention, a first table and a second table 3 equipped with a rotation device and a rotation angle indexing device are arranged spaced apart on the x-axis, and the first table is centered on the y-axis perpendicular to the x-axis. The second table can be rotated 90 degrees toward the first table around an axis parallel to the y-axis, and one of the first and second tables can be rotated 90 degrees toward the second table. The present invention is a table device for multifaceted processing of a workpiece, characterized in that one or both of the tables are movable in the x-axis direction.

[Effect]

FIGS. 2 to 4 show the operation of the present invention.

First, place the work w on the table of the first table 1.
, and move the first table 1 using a moving cylinder or manually along the guide 4 to the cutting position below the cutting tool T, and then move the first table 1 to the cutting position below the cutting tool T.
(Figure 2). Then, after the reference surface machining is completed, the first table is changed to the second table 3 for multi-face machining.
After moving the tables 1 and 3 in a direction away from the table, both tables 1 and 3 are each rotated 90 degrees inward so that the table surfaces of both tables face each other, and then the first table 1 is moved in the direction of the second table 3. The upper surface w1 of the workpiece w is brought into contact with the surface of the second table 3, and in this state, the workpiece w is placed on the second table 3.
(Figure 3).

Note that to attach the workpiece w, the indexing mechanism 2 of the second table is used to attach the second table 3.
By rotating the , it is possible to easily clamp the desired parts around the . At this time, the first table 1 rotates following the second table 3.

After attaching the work w to the second table 3, the first table 1 side is unclamped. After the work w whose reference surface has been machined in this way is transferred to the second table 3, the first table 1 is moved backward, and the indexing mechanism and rotation mechanism of the second table 3 are then operated. Machining is performed on the remaining five or more surfaces of the workpiece w (Fig. 4).

〔Example〕

Embodiments of the present invention will be described based on the drawings.

FIG. 1 is a front view of this embodiment, FIG. 5 is a plan view thereof, and FIG. 6 is a side view.

10 is a cutting tool head, 11 is a base frame, 12 is a column saddle movable in the x-axis direction,
13 is a column movable in the y-axis direction on the column saddle 12, and 14 is a spindle saddle supported by the column 13 and movable in the vertical direction (z-axis direction).

Two saddles 15 and 16 that are movable in the x-axis direction on the guide 4 are mounted on the base frame 11 at the front of the machine, and on the first saddle 15 there is a 1 table 1 is equipped,
Further, a second table 3 for multi-face machining is installed on the second saddle. The first table 1, as shown in FIG.
A lever 5 having a pin 6 at one end is fixed to the end of B, and the pin 6 is engaged in a vertical guide groove 9 provided in the head 8 of a hydraulic cylinder 7 operated by a stroke in the x-axis direction. ing.

1A is a rotating case that rotatably supports the first table 1 and is rotated by a support shaft 1B; 15A;
is a fixed machine casing that supports one side of the rotating machine casing 1A. By operating the fluid pressure cylinder 7 and moving it forward or backward in the x-axis direction, the lever 5 is
is rotated around the y-axis, the first table 1 is rotated from a horizontal state to a vertical state as shown in FIG. 3, and then returned to the horizontal state again.

On the other hand, as shown in FIG. 8, the second table 3 mounted on the saddle 16 has a vertical shaft that engages with a pin 17 at one end of a lever 18 connected to a support shaft 3B, similar to the first table 1 described above. Head 1 with groove 19'
The second table 3 can be rotated by 90 degrees by a hydraulic cylinder 20 that horizontally reciprocates the second table 3. 1B' and 3B indicate the rotation axes of the first table 1 and the second table 3, respectively.

Incidentally, the 90° rotation device using the levers 5, 18 and the hydraulic cylinders 7, 20 described above for the first table 1 and the second table 3 is not limited to the above-mentioned mechanism, but may also be a rack and pinion system or a servo motor. A rotating mechanism using a driven worm and a worm wheel may be used instead.

Also, for convenience of explanation, each table 1 is shown at 90° in the example.
3 is described, however, depending on the shape of the workpiece, it may be rotated to any angle within 90 degrees.

If the relationship between the support device of each table and the rotation mechanism of the table is shown in the example of the second table 3 shown in FIG.
One side thereof is supported by one support shaft 3B on a bearing stand 36 erected on the saddle 16 mentioned above, and the wall 35 on the other side is supported on an indexing machine casing 37 installed on the saddle 16. It is connected to a side plate 38 which is rotated by a support shaft 3B. The rotary indexing device of the second table 3 employs a well-known hearth coupling 39, and 40 is a coupling actuating body that operates using fluid pressure, and 41 is a bearing integrated with the machine casing 37. Department. The hearth coupler 39 is actuated by controlling the fluid pressure acting between the pressures at both ends of the actuating body 40 (42, 43) to support the side plate 38 and therefore the supporting machine casing 3A of the second table 3. The rotation angle is fixed in accordance with the rotation of the shaft 3B.

The second table 3 is arranged perpendicularly to the support machine casing 3A so as to be indexable around the main support shaft 24.

In FIGS. 8 and 9, the gear 25 fixed to the main shaft 24 receives bevel gears 27, 28, shaft 29, worm 30, worm wheel 31, and pinion 32 from a motor 26 installed in a part of the support machine casing 3A. It is driven by In the embodiment, the second table 3 can be indexed every 5 degrees.
In FIG. 8, reference numeral 21 indicates a hearth coupling for indexing, 22 indicates a coupling operating body using fluid pressure for operating the coupling, 23 indicates a bearing portion, and 33, 34 indicates pressure between the operating members.

In the work of transferring the workpiece from the first table 1 to the second table 3, the first table 1 and the second table 3
without rotating the work w held between the table 3 and the second table 3 around the main axis.
For example, if the workpiece w can be clamped to the second table 3 using an automatic clamper, after the clamping is finished, the workpiece w may be unclamped from the first table 1 and the first table 1 may be moved back. In this case, the size or height of the second table 3 above the saddle is not necessarily the same as that of the first table 1.
It does not have to be the same size as the table, and can be designed to the size necessary as a second table for multifaceted processing.

On the other hand, the workpiece w is sandwiched between the first table 1 and the second table 3, which have been rotated 90 degrees with respect to each other, and the workpiece 1 is clamped for transfer to the second table.
~3 times If it is necessary to rotate the table around the main axis line, the first table 1 can be passively rotated on the same axis as the main axis of the second table 3 according to the rotation. good. That is, as shown in the embodiment, the axes of the horizontal main shafts of the first table 1 and the second table 3 after rotation by 90 degrees may be maintained on the same line. The mechanical condition for this is that the heights of the centers of the pivot shafts 1B and 3B of the first table 1 and the second table 3 are set to be the same height.

The device of the present invention is not limited to the above-mentioned embodiments, and the design of each part thereof can be changed within the scope of the invention.

〔Effect of the invention〕

According to the present invention, the workpiece w whose reference surface has been machined on the first table is transferred to the first and second tables 1 and 3.
is rotated 90 degrees in the direction in which their table surfaces face each other, and the first table 1 is moved toward the second table 3 for multi-face machining to transfer the workpiece w, and then the workpiece w is transferred to the second table 3. Each surface of the workpiece w can be processed by rotation or indexing operations. Furthermore, setup changes can be performed with high precision, improving work efficiency and stabilizing the precision of the workpiece.

[Brief explanation of drawings]

The drawings show embodiments of the invention,
FIG. 1 is a front view, FIGS. 2, 3, and 4 are schematic front views showing the operation of the table device according to the present invention, FIG. 5 is a plan view of the embodiment, and FIG. 6 is a diagram of the embodiment. 7 is a front view showing the rotating mechanism of the table, FIG. 8 is a sectional view showing the internal structure of the table for multi-face machining, and Fig. 9 is an indexing device for the table for multi-face machining of workpieces. FIG. 1...First table, 1A...Rotating machine housing, 1B
... Rotation center support shaft, 2 ... Indexing device, 3 ... Second table, 3A ... Support machine casing, 3B ... Rotation center support shaft, 4 ... Guide, 5, 18 ... Lever,
6,17...Pin, 8,19...Head, 7,2
0...Fluid pressure cylinder.

Claims (1)

[Claims] 1. A first table and a second table equipped with a rotation device and a rotation angle indexing device are arranged apart from each other on the x-axis, and the first table is arranged on the y-axis perpendicular to the x-axis. The second table can be rotated 90 degrees toward the second table around an axis parallel to the y-axis, and the second table can be rotated 90 degrees toward the first table around an axis parallel to the y-axis. A table device for multi-face machining of a workpiece, characterized in that one or both of the table devices are movable in the x-axis direction. 2. Multifaceted processing of a workpiece according to claim 1, in which the heights of the rotation centers of the first table and the second table are the same, and the rotation axes of both tables are set to be the y-axis or parallel to the y-axis. table equipment. 3. The table device for multifaceted processing of a workpiece according to claim 1 or 2, wherein the first table is rotatable following the rotation of the second table.