JP3226459B2 - Turret indexing control device for lathe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret indexing control device for turning a turret using a numerical control axis at an arbitrary angle position.

[0002]

2. Description of the Related Art Conventionally, when performing index control of a lathe turret using a numerical control axis, an index angle position is set and stored in correspondence with a turret index number, and is commanded by a machining program. The turret indexing control is performed by reading the indexing angle position corresponding to the turret indexing number. Hereinafter, the related art will be described.

FIG. 6 is a block diagram of a conventional turret indexing control device for a lathe. The index angle position corresponding to the turret index number is set and stored in advance in the turret index angle storage unit 2 via the data setting unit 1. FIG. 4 shows the state of the index angle position corresponding to the turret index number stored in the turret index angle storage unit 2. For example, when the turret index number is 1, the index angle is 0 degree, Number is 2
In the case of, the index angle is set and stored as 90 degrees, and in the case of 3, 4 as 180 degrees and 270 degrees, respectively. When a turret index number command is issued by the machining program, the index command analysis unit 3 analyzes the turret index number command and sends the obtained turret index number to the turret index angle reading unit 4. The turret index angle reading unit 4 reads the index angle position corresponding to the turret index number from the turret index angle storage unit 2, and based on the index angle position, the turret index control unit 7 controls the motor drive control unit. Numerically controlling the turret rotation motor 9 for driving the turret via the controller 8 controls the indexing to a predetermined indexing angular position. FIG. 3A shows a state in which the rotary tool is mounted at the position of the turret index number T3. When the turret index number T3 is commanded by the machining program, the turret is rotated 180 degrees as shown in FIG. The index is controlled to the position where the vehicle has turned.

[0004]

According to the above-described conventional apparatus, when a plurality of tools including a rotary tool are mounted on a turret and drilling is performed by a composite lathe that performs drilling or the like, a spindle for gripping a workpiece is used. Is fixed, the turret equipped with a rotating tool is indexed to a predetermined position, and machining is performed by rotating the tool and controlling the drive of the feed axis. There has been a demand that the turret described above is indexed to an arbitrary position, and that a tool is directed obliquely to perform oblique hole machining at a predetermined angle as shown in FIG. In order to respond to such a demand, it has been a problem how to control the turret indexing such that the mounted rotary tool is oriented at a predetermined angle.

In the case of using the above-mentioned conventional apparatus, the above-mentioned demand can be met by storing the index angle position for each position required for indexing. In addition to requiring a large amount of memory in the turret indexing angle storage unit 2 because it must be stored, the programmer cannot directly instruct the inclination of the tool. It is necessary to instruct a turret index number to which a relationship with the index angle position is added, which may cause a program error or the like. As another method, even when a method of directly instructing a turret indexing angle position as a rotation axis position command is used, turret indexing in consideration of a relationship between a turret position where a tool is mounted and an angle for tilting the tool is used. It is necessary to calculate and instruct the angular position, and similarly, it can be a factor that causes a program error or the like. SUMMARY OF THE INVENTION In view of the above-described problem, an object of the present invention is to make it easy for a programmer to create a program command for a programmer to index a tool to be used for machining to a predetermined angle, and to prevent a work error such as a program error from occurring. To provide a turret indexing control device.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a lathe turret indexing control device using a numerical control axis.
An object of the present invention is to provide a turret index angle position setting / storage means for setting / storing an index angle position corresponding to a turret index number, and a turret index number command and an angle from a turret index number. A turret index angle reading unit for reading an index angle position corresponding to a turret index number designation of a machining program command consisting of a commanded angle command from the turret index angle position setting / storage means; and an angle command of the machining program command And a turret indexing angle command calculator for adding an indexing angle position from the turret indexing angle readinger and an angle command from the angle commanding reader to obtain a turret indexing angle command. This is achieved by controlling the turret indexing by the calculated turret indexing angle command.

[0007]

According to the turret indexing control apparatus for a lathe according to the present invention, a tool is selected from a turret on which a tool to be used is mounted by an index number command, and an angle command is directly input as an angle for tilting the tool. By issuing the command, the index of the used tool can be controlled to an arbitrary inclination angle. Hereinafter, a turret indexing control device for a lathe according to the present invention will be described in detail. FIG. 1 is a block diagram showing an embodiment of the present invention in correspondence with FIG. 6. The same components as those in the block diagram of the conventional device in FIG. 6 are denoted by the same reference numerals, and the description thereof will be omitted. I do. FIG. 5 shows an example of a machining program command according to the present invention, wherein a block having a sequence number N101 or N201 constitutes a turret indexing command,
At T03 **, a turret index number command is issued, and at Bθ, an angle command for instructing the index tool is issued. In FIG. 1, a turret index angle reading unit 4 reads out an index angle position corresponding to a turret index number command of a machining program command, sends it to a turret index angle command calculation unit 6, and outputs a turret index of a machining program command. The angle command issued together with the index number command is sent from the index command analyzing unit 3 to the turret index angle command calculating unit 6 via the angle command reading unit 5. The turret index angle command calculation unit 6 calculates a turret index angle command by adding an index angle position corresponding to the turret index number command and an angle command of the machining program command. Based on the obtained turret indexing angle position, the turret indexing control unit 7 controls the motor drive control unit 8
The numerical control of the turret rotation motor 9 for driving the turret is performed to control indexing to a predetermined indexing angular position.

The above operation will be supplementarily described with reference to FIG.
FIG. 3A shows a state in which the turret selects the index number T1 and the inclination of the tool is 0 degrees. Here, the turret index number command is T3, and the angle instruction indicating the inclination of the tool is ΘB. When the machining program command is issued, the turret index angle command calculation unit 6 commands the position obtained by adding the index angle position # 3 and the angle command #B corresponding to the turret index number command as the index angle position. As shown in FIG. (C), the tool T3 is controlled to be indexed to a predetermined inclination (位置 B) position.

[0009]

As described above, according to the present invention, a tool is selected from a turret on which a tool to be used is mounted by an index number command, and the angle command for tilting the tool is directly issued as an angle command as a tilt angle. As a result, the tool used can be indexed to an arbitrary inclination angle, so that it is not necessary to calculate the turret index angle when creating a machining program, and the machining program itself can be easily created. It is also possible to prevent a work error such as a program error.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a turret indexing control device for a lathe according to the present invention.

FIG. 2 is a plan view showing a positional relationship between a turret, a tool, and a workpiece during oblique hole machining.

FIGS. 3A and 3B are plan views showing a turret indexing state, in which FIG. 3A shows an indexing number T1, and FIG. 3C shows a state in which oblique hole machining by T3 is instructed.

FIG. 4 is a diagram illustrating a relationship between stored turret index numbers and corresponding index angles.

FIG. 5 is a diagram showing an example of a machining program command according to the present invention.

FIG. 6 is a block diagram showing an example of a conventional turret indexing control device for a lathe.

[Explanation of symbols]

 1 Data setting unit 2 Turret index angle storage unit 3 Index command analysis unit 4 Turret index angle read unit 5 Angle command read unit 6 Turret index angle command calculation unit 7 Turret index control unit 8 Motor drive control unit 9 Turret Swing motor 20 Turret 21 Workpiece 22 Spindle

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B23Q 15/00-15/28 B23Q 16/02 G05B 19/18-19/46 B23B 27/00-29 / 34

Claims (1)

(57) [Claims] In a turret indexing control device for a lathe using a numerical control axis, a turret indexing angle position setting / setting for setting and storing an indexing angle position corresponding to an indexing number of the turret.
The turret indexing angle position setting / storing means stores a turret indexing number position corresponding to a turret indexing number command of a machining program command including a turret indexing number command and an angle command for instructing an angle from the turret indexing number. A turret indexing angle reading unit for reading from the means, an angle command reading unit for reading the angle command of the machining program command, and an indexing angular position from the turret indexing angle reading unit and an angle command from the angle command reading unit. A turret indexing angle command calculating section for obtaining a turret indexing angle command by adding the turret indexing angle command, and controlling the turret indexing by the calculated turret indexing angle command. Output control device.