JPS6144731Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pattern milling machine that processes a product according to a model.

Recently, with the shift to NC in machine tools, many pattern milling machines have been proposed that process materials according to models, and some of them are in practical use.

An example of a conventional milling machine of this type is shown in FIG. This profiling milling machine includes a spindle 2 that is provided on a frame 1 and that rotates while gripping a tool (cutting tool) 3 and is movable up and down, and a stylus 5 that is provided extending from the frame 1 and is movable up and down. It consists of an arm 4, a table 6 movable in the X-Y direction, an operation panel 7, etc.
Place the model on the table 6 below the stylus 5,
Further, the workpieces are each fixed below the tool 3, and after aligning the stylus 5 and the tool 3 attached to the spindle 2 to determine the coordinate points, the table 6 is moved in the X-Y direction, and the stylus 5 in the vertical direction (Z direction) along the outline of the model, and move the spindle 2 in response to the movement of the stylus 5.
control the vertical movement of these X-Y-Z3
The material is processed according to the model using the resultant displacement in the direction.

However, in a profile milling machine with such a configuration, the spindle 2 and stylus 5 are installed close to each other on the same frame 1, so the vibrations of various parts of the machine that occur when cutting the material are directly transmitted to the stylus 5. The stylus 5 could not accurately trace the model, making it difficult to obtain a product that accurately matched the model. Also,
When replacing tool 3, remove the previously used tool from spindle 2 by hand each time.
Since new tools had to be installed, it was not only troublesome but also time-consuming to replace them, which caused many problems, such as lowering the operating efficiency of the machine.

The present invention was developed to solve the above-mentioned conventional problems, and consists of a separate model stand equipped with a milling machine and a stylus, so that the vibrations caused by cutting are directly transmitted to the stylus. , the purpose is to provide a profile milling machine that is capable of obtaining products that exactly match the model.

In order to achieve the above object, the profiling milling machine of the present invention consists of a milling machine, a model stand equipped with a table movable in the X-Y directions, a stylus movable up and down, and a position detector for the stylus. , the table of the model stand and the table of the milling machine are connected via an elastic material 27 that absorbs vibrations, the model and the workpiece are fixed to both tables, respectively, and the position of the spindle of the milling machine is determined by the position of the stylus. It is characterized by control. The present invention will be explained below using the drawings.

FIG. 2 is a front view of the embodiment of the present invention. In the figure, 11 is a milling machine, 13 is a milling machine 11
A tool (cutting tool) 14 is mounted on a spindle that is movable up and down on the frame 12 of the machine. 15 is a table, and 16 is an operation panel. Note that the control device of this milling machine is the frame 12.
It is housed in a locker installed at the rear of the car. 1
Reference numeral 7 denotes a tool magazine of an automatic tool changer (hereinafter referred to as ATC), in which a large number of tools 14a are removably attached, and a desired tool is automatically replaced according to a program input to the operation panel 16. be able to.

21 is a model stand, 22 is a stylus, and a movable member 2 is provided on a frame 24 so as to be movable up and down.
It is installed on 3. A servo motor 25 moves the movable member 23 up and down along the frame 24, and has a function of detecting the position of the stylus 22. 26 is a table to fix the model, X-Y
can move in the direction.

As described above, since the milling machine 11 with ATC and the model stand 21 are provided separately, the milling machine with ATC can process materials independently as a machining center. In addition, when performing profiling, both tables 15 and 26 are mechanically connected via an elastic material that absorbs vibrations, such as urethane, spring steel, or hard rubber, and the model is placed on the table 26 of the model stand 21. Processing materials are fixed to the table 15 of the milling machine 11, respectively.

In this state, the movable member 2 is
When the stylus 22 is brought into contact with one point on the model, the servo motor 25 detects the position and sends a position signal to the control device of the milling machine 11 to lower the spindle 13. and the tool 14, and determine the coordinate points. Next, the table 15 (and therefore the table 26 at the same time) is moved in the X-Y direction, and the stylus 22 is moved in the vertical direction (Z direction) along the outer shape of the model, and this movement is detected and a position signal is generated. is sent to the control device of the milling machine 11, and the tool 14 is moved in the Z direction following the stylus 22. In this way, the workpiece can be machined in accordance with the model by the combined displacement caused by the movement of the tables 15 and 26 in the X-Y direction and the movement of the stylus 22 and tool 14 in the Z direction.

In the above explanation, the case where the tool magazine 17 is provided on the side of the spindle 13 of the milling machine 11 is shown, but it may also be arranged at a certain angle in the front upper part of the spindle 13, or
It may be provided above. Further, the movable member 23 of the model stand 21 is moved in the vertical direction and the stylus 22 is moved.
Although the case where the servo motor 25 is used to detect the position of the movable member 2 is shown, a hydraulic mechanism or other mechanism is used to detect the position of the movable member 2.
The stylus 3 may be moved in the vertical direction, and various methods can be used to detect the position of the stylus 22. Note that ATC is not essential to the present invention and may be omitted.

Even if the table 15 of the milling machine 11 is connected to the table 26 of the model stand 21 via an elastic member 27, the table 26 moves only when the table 15 is pulled or pushed.
Since the model 6 and the model fixed thereon are lightweight, they do not affect the machining accuracy.

As is clear from the above explanation, according to the present invention, the table of the milling machine and the table of the model stand are separately provided, and the two tables are connected via an elastic material, so that the milling machine can be easily used during profiling. The vibrations are absorbed by the elastic material and do not affect the stylus. This allows the stylus to accurately trace the model, thus resulting in a product that exactly matches the model. In addition, since the milling machine can be used alone, the implementation has great effects, such as improving the operating efficiency of the machine.

[Brief explanation of the drawing]

FIG. 1 is a front view of an example of a conventional profile milling machine, and FIG. 2 is a front view of an embodiment of the present invention. 11...Milling machine, 12...Frame, 13
... spindle, 14 ... tool, 15 ... table, 17 ... tool magazine, 21 ... model stand, 22 ... stylus, 23 ... movable member, 2
5... Servo motor, 26... Table, 27...
...Elastic material.

Claims (1)

[Scope of utility model registration request] It consists of a milling machine, a model stand equipped with a table movable in the X-Y directions, a stylus movable up and down, and a position detector for the stylus,
The table of the model stand and the table of the milling machine are connected through an elastic material that absorbs vibrations, a model and a workpiece are fixed to both tables, respectively, and the position of the spindle of the milling machine is controlled by the position of the stylus. A milling machine characterized by: