JPH0745075B2 - Turret punch press control device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a control device for a turret punch press machine in which a turret is equipped with a compound tool having a plurality of unit tools.

[Conventional technology]

In the turret punch press, as shown in FIG. 8, a composite tool 82 having a plurality of unit tools 83 is rotatably installed at a part of the turret stations arranged in the circumferential direction of the turret 81. Things are being tried. In this case, the punch driving ram is provided with a hitting piece 84 for hitting the unit tool 83 at an eccentric position, and by rotating the compound tool 82 about the tool center, the hitting piece 84 of the ram is moved. Position the desired unit tool 83 at the position.

By equipping the composite tool 82 in this way, the number of tool types can be increased with respect to the number of turret stations.

When specifying the unit tool 83 of the compound tool 82 by numerical control, the turret station where the compound tool 82 is installed is specified by the tool command code of the machining program, and separately, the compound tool 82 is rotated around the tool center. The index angle command to rotate the index is entered as an angle value. For example,
A code in which the angle value ΔΔ is described after the address C is used as in “CΔΔ”. Further, the distance Y _a between the center P of the unit tool punch by the striking piece 84 and the center O of the turret station which is the tool center of the compound tool 82 is input as the tool position correction amount.

[Problems to be Solved by the Invention]

In the above device, the unit tool 83
Since the rotation command of the composite tool 82 for positioning is performed by the angle value, the creation of the machining program is complicated and an input error is likely to occur. If such an input error occurs, punching will be performed with the unit tool 83 positioned at a position displaced from the striking piece 84 of the ram, and the composite tool 82 will be damaged.

An object of the present invention is to provide a control device for a turret punch press machine which can simplify a machining program when designating a unit tool in a compound tool and can prevent tool damage due to an input error.

[Means for Solving the Problems]

The structure of the present invention will be described with reference to FIG. 1 corresponding to the embodiment.

According to the present invention, a rotatable compound tool (15) having a plurality of unit tools (19) on the circumference is arranged among a plurality of turret stations (T1) to (T8) arranged on the circumference of a turret (10). Installed on some turret stations (T4) and (T8), and installed other types of tools on the remaining turret stations, and install the unit of the complex tool (15) at the eccentric position of the ram being driven up and down. A control device for a turret punch press machine having a hitting piece for hitting a tool (19), which comprises the following configuration.

A unit tool number indicating each of the unit tools (19) and the unit tool (19) indicated by the number so that the compound tool (15) is rotated around the tool center so that the unit tool (19) is located at the position of the striking piece of the ram. A storage means (40) is provided in which the indexing angle for rotation is set correspondingly. Further, a machining program (30) including a tool command code (38) capable of describing a unit tool number is provided following the number designating the turret station. An arithmetic control unit (31) is provided which receives the machining program (30) and transfers the tool command code (38) of the machining program (30). This transferred tool command code (38)
A tool command code analysis means 39) for interpreting a predetermined digit (38b) of the above as a unit tool number and outputting a command of the corresponding indexing angle of the storage means (40) is provided.

[Action]

When executing the machining program (30), the tool command code analysis means (39) analyzes the predetermined digit (38b) of the tool command code (38) as a unit tool number, and the unit tool number of the storage means (40). Select and output index angle data corresponding to.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

FIG. 2 is an external perspective view of the turret punch press.
The frame 1 is composed of a lower frame 2, an upper frame 3, and a column portion 4 in a C shape, and a fixed table 5 is arranged at the center of the lower frame 2. Slide tables 6 are arranged on both sides of the fixed table 5, and are moved forward and backward along the rails 7 on the upper surface of the lower frame 2 together with the carriage 8 in the front-back direction (Y-axis direction). Left and right direction (X
A cross slide (not shown) that moves in the axial direction is installed, and a plurality of work holders 9 that hold the work W are attached to the cross slide. The work holder 9 and the carriage 8 constitute a work feeding mechanism 14.

Between the upper and lower frames 3 and 2, upper and lower turrets 10 and 11 respectively holding a punch tool and a die tool are concentrically installed.The turrets 10 and 11 are supported by the upper and lower frames 3 and 2, respectively, and are separated from each other. It is rotated in synchronization with each other by the feeding mechanism. A crank mechanism 12 for raising and lowering a ram 13 is provided inside the upper frame 3.

As shown in FIG. 4, the turret 10 has a large number of turret stations T1 to T8 on the same circumference, some of the turret stations T4 and T8 are provided with a compound tool 15, and the remaining turret stations T1 to T8 A standard punch tool (not shown) is installed at T3 and T5 to T7.

As shown in FIG. 3, the compound tool 15 will be described in a schematic configuration. A plurality of unit tools 19 are attached to a holder 18 having a T-shaped ram engaging head 17 rotatably attached thereto so as to be vertically movable. It is a thing. The unit tools 19 are arranged around the rotation center of the holder 18. The compound tool 15 is rotatably fitted in the punch mounting holes 20 in the turret stations T4, T8 of the turret 10, and when the turret 10 moves downward of the ram 13, the ram engaging head 17 moves. Engage in the groove at the bottom of 13. The ram 13 has a striking piece 22 for striking the unit tool 19 of the compound tool 15 at the lower end, and a worm wheel 24 constituting an indexing mechanism 23 is rotatably supported by the upper frame 3 at a concentric position with the ram 13. ing. In the worm wheel 24, the projecting / withdrawing pin of the engaging cylinder 25 provided on the lower surface is engageable with the engaging recess 26 of the composite tool 15, and rotates the composite tool 15 in the engaged state. By this rotation, the arbitrary unit tool 19 is hit with a striking piece.
You can move to a position where you can hit with 22.

A die tool 27 is installed on the lower turret 11 and is indexed and rotated by an indexing mechanism 28 in synchronization with the punch-side compound tool 15. A sensor 29 for detecting the indexing angle is installed facing the outer periphery of the die tool 27.

FIG. 1 is a block diagram of a control system. Numerical control device 16
In the above, the processing control unit 31 analyzes and executes the machining program 30, and outputs a shaft drive command to the servo motors 33 of the respective axes of the work feeding mechanism 14 via the servo control unit 32. The arithmetic and control unit 31 has a tool correcting means 34 for offsetting the tool position. Sequence codes such as M / S / T codes of the machining program 30 are transferred from the arithmetic control unit 31 to the programmable controller 35.

The programmable controller 35 is provided with a program for the whole sequence control, and a tool command code analysis means 39 is provided in a part thereof. The tool command code analysis unit 39 analyzes the tool command code 38 of the machining program 30 transferred from the arithmetic control unit 31, refers to the data of the storage unit 40, and the index motor 36 of the turret 10,
The command is given to the index motor 37 of the composite tool 15.

The storage means 40 is a means for setting various NC parameters, and a part thereof includes a storage area 41a for the unit tool number of the composite tool 15 and a storage area 41b for the index angle around the tool center of the composite tool 15. A table 41 including a storage area 41c for the Y-axis tool position correction amount when the compound tool 15 is used is provided. The unit tool number is the unit tool of the compound tool 15 in advance.
It is a number for numbering 19 and registering.

The operation of the above configuration will be described.

Briefly speaking, when the unit tool 19 of the composite tool 15 is positioned during punching, the turret 10 rotation is performed so that the composite tool 15 is positioned at a position corresponding to the ram 13 only by giving a tool command code 38. Is performed, and the index tool is rotated about the tool center so that the unit tool 19 is positioned at the position of the striking piece 22 of the ram 13.

The tool command code 38 that specifies the compound tool 15 is the address T
The number for designating the turret stations T1 to T8 is described in the upper 2-digit or 1-digit numerical part 38a, and the unit tool number is described in the lower 2-digit numerical part 38b.

An example of registration of NC parameters in the table 41 will be described with reference to FIGS. 5 and 6. Storage area for unit tool numbers
41a has an NC parameter address of 4500 as shown in Fig. 6.
The area is up to 4563, and the set value is any value from 1 to 99. In the example of FIG. 6, the values of (41) to (44) are registered in correspondence with the four unit tools 19 of FIG. The indexing angle of the compound tool 15 is the rotation angle around the tool center of the compound tool 15 when each unit tool 19 indicated by the unit tool numbers (41) to (44) comes to the position of the striking piece 22 of the ram 13. is there. In the index angle storage area 41b, the NC parameter address is 456.
The area from 5 to 4628 is set, and the value from 0 to 35999 is set to the absolute type in units of 0.01 degree. The Y-axis tool position correction amount Y _{a in} FIG. 5 is determined by the impact piece 22 of the unit tool 19 (FIG. 3).
It is the offset amount from the punch center P to the turret station center O, which is set in the area of NC parameter addresses 4630 to 4693 as shown in FIG. Units
It is shown in 0.01 mm.

Next, the control operation will be described. When the tool command code 38 of the machining program 30 is transferred to the programmable controller 35, the tool command code analysis means 39 causes the tool command code
The positioning commands for the turret stations T1 to T8 are output to the index motor 36 in accordance with the upper 2-digit numerical portion 38a of 38. In addition, the value of the numerical portion 38b of the lower two digits is determined as the unit tool number, the storage means 40 is referred to, the value of the corresponding compound tool indexing angle is output to the index motor 37, and the Y-axis tool position correction is performed. The set value of the quantity is transferred to the tool compensating means 34 of the numerical controller 16.

As a result, the compound tool 15 is positioned at the position of the ram 13, and the unit tool 19 of the compound tool 15 is positioned at the position of the striking piece 22 of the ram 13.

Explaining with the program example of FIG. 7, “X6 in block B2
00, T842; "command, a feed of 600 mm in the X-axis direction is given, the turret station T8 is positioned, and the unit tool number 42 is selected. A command for setting the indexing angle of the composite tool 15 to 90 ° is issued from this tool number 42, and the unit tool 19 of the unit tool number 42 is positioned at the position of the striking piece 22. The tool position correction amount Y _a on the Y-axis is 20 mm from Fig. 6,
By this size, the feed in the Y-axis direction by the work feed mechanism 14 (FIG. 2) is corrected. For block B1 commands,
The X-axis and Y-axis feeds are 800 mm each, and the turret station T7 equipped with a standard punch tool is positioned.

In this way, by selecting and inputting the unit tool number in the machining program 30, the unit tool 19 by rotating the composite tool 15
Can be positioned. Therefore, the machining program 30 is simplified, and it is possible to prevent the composite tool 15 from being damaged by an unreasonable punch due to an input error.

〔The invention's effect〕

The control device of the present invention presets the indexing angle corresponding to the unit tool number of the compound tool in the storage means, interprets a predetermined digit of the tool command code as the unit tool number, and then performs the corresponding indexing of the storage means. Since the angle is output, the unit tool can be positioned by rotating the compound tool by selecting and inputting the unit tool number in the machining program. As a result, one unit tool in the compound tool is as if it is one general tool. It can be selected only by specifying the tool number. Therefore, there is an effect that the machining program is simplified and damage to the composite tool due to an input error is prevented.

[Brief description of drawings]

1 is an explanatory view of the structure of an embodiment of the present invention, FIG. 2 is a schematic perspective view of the turret punch press, FIG. 3 is a side view of the crank mechanism and a tool portion thereof, and FIG. Fig. 5 is a plan view of the turret, Fig. 5 is an enlarged plan view of the composite tool portion, Fig. 6 is an explanatory view of an example of data stored in the storage means, and Fig. 7 is an explanatory view of a program example of the same. FIG. 7 is a plan view of a conventional composite tool. 10, 11 ... Turret, 13 ... Ram, 14 ... Work feed mechanism, 15
... Composite tool, 16 ... Numerical control device, 19 ... Unit tool, 22 ... Striking piece, 23 ... Indexing mechanism, 30 ... Machining program, 34 ... Tool compensating means, 35 ... Programmable controller, 36,37 ...
Index motor, 38 ... Tool command code, 38a ... Numerical part of upper digit, 38b ... Numerical part of lower digit (predetermined digit), 39 ... Tool command code analysis means, 40 ... Storage means, 41a to 41c ... Storage area, O … Center of turret station, T1 to T8… Turret station, Y _a … Tool position compensation amount

Claims (1)

[Claims] 1. A rotatable composite tool having a plurality of unit tools on its circumference is installed in a part of a plurality of turret stations arranged on the circumference of a turret, and each of the remaining turrets. A control device for a turret punch press machine, in which other types of tools are installed in a station, and an impact piece for impacting the unit tool of the composite tool is provided at an eccentric position of a ram that is driven up and down. And a unit tool number indicating each of them and an indexing angle for rotating the compound tool around the tool center so that the unit tool indicated by this number comes to the position of the striking piece of the ram Means is provided, and a machining program including a tool command code capable of describing a unit tool number is provided following the number specifying the turret station. A tool command for providing an arithmetic control unit for transferring a tool command code of a program, interpreting a predetermined digit of the transferred tool command code as the unit tool number, and outputting a command of an indexing angle corresponding to the storage means A control device for a turret punch press equipped with code analysis means.