JPH0532247Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an improvement of a 5-axis control NC router.

<Conventional technology> When using a conventional 5-axis controlled NC router to cut a workpiece based on a model of a curved surface, separate equipment is used for copying the model and collecting data and for cutting. Normally, there is no device available that can perform both tasks with one device.

Furthermore, because the shape of the probe used for profiling work and the tool used for cutting work were different, the data obtained by profiling could not be used as is, and corrections were required.

<Problems to be solved by the invention> This invention is a 5-axis control NC that eliminates the above drawbacks.
The purpose is to provide routers.

<Means for Solving the Problems> In order to achieve this purpose, the present invention is configured as follows.

In other words, a table is provided that moves the workpiece or model in the front, back, left and right directions, and a lifting sill that can be raised and lowered is placed on the front of the upper part of a column established from the rear of this table, and this lifting sill can rotate 360° in the left and right direction. A rotating sillage is provided, a tilting head that tilts ±90° is attached to the rotating sillage, and a tool for cutting the workpiece and a probe that has the same shape as the tool and follows the external shape of the model are interchangeably attached to the tilting head. This is a 5-axis control NC router that has arithmetic means that calculates a program to control the tool based on data obtained during copying work, and a memory that stores this program.

<Function> With this structure, when cutting with a tool, the tool always hits the machined surface at right angles, resulting in high machining accuracy and a beautiful cut surface. Also,
If a probe is attached in place of the tool, data can be acquired from the model and the tool can be controlled based on this data, so one device can perform both machining and data acquisition from the model.

<Examples> Examples of the present invention will be described below based on the drawings. As shown in Figs. 1 and 2, a base 2 extending in the front and back direction is provided at the center of the bottom front of the column 1, and the column 1 is moved in the front and rear direction by a Y-axis motor 4 via Y rails 3, 3. Front and rear sills 5 are arranged. X rails 6, 6 extending in the left-right direction are provided on the front and rear sills 5, and a table 8 that is moved in the left-right direction by an X-axis motor 7 is arranged via the rails 6, 6. A workpiece or a model (both not shown) is set on the table 8.

An elevating rail 11 is provided on the upper front surface of the column 1 to be moved up and down along upper and lower rails 10, 10 by a Z-axis motor 9. A rotary sill 12 is provided at the lower end of the elevating sill 11, which rotates 360° in the left and right direction. A rotating shaft 13 extending vertically is provided within the elevating sill 11, and a worm gear 14 is attached to the upper end of the rotating shaft 13 as shown in FIG. The worm gear 14 includes a rotating servo motor 1 attached to one side of the elevating sillage 11.
A worm 17 attached to a rotating shaft 16 connected to a rotating shaft 151 of No. 5 is engaged with the rotating shaft 16.

A case 19 containing the rotating shaft 16 is provided around the rotating shaft 16, and its outer end is supported by a rod 21 pivotally connected to a fulcrum 20. A bearing 22 that supports the tip of the rotating shaft 16 is provided inside the tip of the case 19. Push bolts 25, 25 for pushing the case 19 are provided on both sides of the case 19, and by pushing either of them, the backlash between the worm 17 and the worm gear 14 is adjusted.

The rotating sill 12 has an inverted U shape when viewed from the front.
A tilting head 26 hangs down inside the head so as to be tiltable, and can be tilted by ±90°.

The tilting head 26 is supported by a horizontal shaft 27, as shown in FIG. 3, and a worm gear 28 for rotating the horizontal shaft 27 is attached to one outer end of the horizontal shaft 27. The worm gear 28 meshes with a worm 31 attached to a vertical shaft 30 connected to the rotating shaft 291 of the tilting motor 29. The lower end of the vertical shaft 30 is supported by a bearing 33 via a disc spring 32. .
The disc spring 32 absorbs the elongation of the vertical shaft 30 due to thermal expansion.

The worm gear 28 is separated into two pieces, a front and a back, which are overlapped with a slight shift, and one side is pressed by a spring 34. This serves to prevent collision between the worm gear 28 and the worm 31 that meshes with the worm gear 28.

35 is a cylinder for vertical positioning of the tilting head 26, and when the tilting head 26 is in the vertical position, a piston 36 is inserted into the tilting head 26 to fix the head 26 in the vertical position.

An arbitrary tool 38 is attached to the lower end of the inclined head 26 via a chuck 37 so as to be replaceable. The tool 38 is selected from among the tools prepared in the ATC holder 39 and mounted thereon.

On the other hand, when copying model A, tool 3
Attach probe 40 in place of probe 8. probe 4
0 has the same shape as the tool 38. For example, when copying the outer circumference of model A whose outer circumference is curved as shown in FIG.
A probe 40 having the same shape as 1 is attached to the chuck 37.

Next, the operation of this apparatus will be explained based on the flowchart shown in FIG. First, the probe 40 is attached to the chuck 37 (step 1). As shown in Fig. 8, the model A is placed on a table 8 via a jig 42, and is placed at an arbitrary measurement point, and X, Y, Z, A, and B are measured at the measurement point. . This data is input into the data bank and floppy disk (steps 3 and 4).

Here, X, Y, Z are the X, Y, Z of the measurement point.
These are the coordinate values, A is the rotation angle of the rotary sillage 12, and B
is the tilt angle of the tilt head 26. This data is a value determined when the probe 40 is perpendicular to the curved surface at the measurement point on the model A. This control is performed by the operator moving the probe 40 while looking at the actual object.

After the measurement at the first measurement point is completed, the probe 40 is moved to the second measurement point. The selection of the second measurement point is determined by the operator according to the shape of model A. Repeat the above operation at the second measurement point.

In this way, data at all necessary measurement points on model A are obtained. These data
Input to CPU (step 5). Next, based on these data, an approximate curve connecting each measurement point is created.
Calculate it using the CPU (step 6). This calculation is performed by a program input to the ROM.

When the NC data is created as a result of the calculation, it is input into the NC memory via the data bank and floppy disk (steps 8, 9, and 10).

After the above operations are completed, the probe 40 is removed and the flat cutter 41 is attached in its place (steps 11 and 12). Start NC. The device is operated based on the data input to the NC memory (steps 13 and 14). Then, the planar cutter 41 cuts the workpiece into the same shape as model A.

<Effects of the Invention> The present invention is constructed as described above so that the tool always faces the machined surface from a direction perpendicular to it. Therefore, high machining accuracy and a beautiful machined surface can be obtained. In addition, the tool and the probe for copying the model can be exchanged, and the tool can be controlled based on the data obtained from copying, so the copying and machining operations, which were conventionally performed using separate devices, can now be done with one device. It became. Since the tool and probe are of the same shape, there is no need to modify data obtained by copying.

[Brief explanation of the drawing]

Figure 1 shows a 5-axis control NC that is an example of the present invention.
FIG. 2 is a front view of the router, FIG. 2 is a side view of the same, FIG.
5 is a sectional view taken along line BB in FIG. 3, FIG. 6 is a flowchart showing the operation of this device, FIG. 7 is a block diagram of the same, and FIG. 8 is a sectional view of the same copying operation. It is an explanatory diagram showing processing work. 1... Column, 8... Table, 11... Elevating slay, 12... Rotating slay, 26... Tilting head, 38... Tool, 40... Probe, A...
model.

Claims (1)

[Scope of utility model registration request] A table is provided that moves the workpiece or model in the front, back, left and right directions, and a lifting sill that can be raised and lowered is placed on the front of the upper part of a column established from the rear of this table.
A rotating sillage that rotates 360° is provided, and ±
A tilting head that tilts 90 degrees is installed, and a tool for cutting the workpiece and a probe that has the same shape as the tool and follows the external shape of the model are attached interchangeably to the tilted head. A 5-axis control NC router that has arithmetic means for calculating a program to control the , and a memory for storing this program.