JPH05245737A - Work positioning set system in machine tool with built-in numerical control system and nc built-in machine tool and milling machine equipped with work positioning device - Google Patents

Abstract

PURPOSE:To set a work on a work table aright in a highly accurate manner by connecting a work positioning device for positioning the work at a specified position on the work table of a machine tool, to a milling machine. CONSTITUTION:A work positioning device 16 for positioning a work 10 at a specified position on the work table, is connected to a machine tool such as a milling machine or the like with a built-in numerical control system. An optional point of the work table 3 and another optional point of the work being positioned by the work positioning device 16 both are positionally controlled so as to accord with each other by the machine tool built-in numerical control system where the optional point of the work 10 being positioned by this work positioning device 16 is inputted, thus the work 10 is set on the work table 3 aright.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work material positioning setting system for a machine tool with a built-in numerical control device, a machine tool with a built-in numerical control device equipped with a work material positioning device, and a milling machine. The machine is connected to an extremely simple work material positioning device that positions the work material at a predetermined position on the work table, and machining is performed using the numerical control device built into the machine tool such as a milling machine. Numerical value that controls the position so that the arbitrary point on the table matches the arbitrary point on the workpiece that is positioned by the workpiece positioning device, and allows the workpiece to be positioned and set on the processing table with high accuracy. For machine tool built-in machine tool and milling machine equipped with work material positioning setting system and work material positioning device in machine tool with built-in control device To.

[0002]

2. Description of the Related Art In a machine tool such as a milling machine, when positioning and setting a work material at an arbitrary point on a work table, it is usual to make a large number of holes on the work table of the machine tool to make the size of the work material large. Depending on the situation, after positioning and setting the round bar in the appropriate hole, contact the work piece with the set round bar and fix the work piece, or use an advanced robot with a built-in numerical controller. Then, the workpiece is positioned and set by a method such as fixing it on the working table so that its arbitrary point coincides with the arbitrary point of the working table.

[0003]

However, in the method of positioning and setting the work material by bringing the work material into contact with the round bar positioned and set in the hole of the work table, innumerable holes are formed in the work table. Although it is possible to perform dimension matching according to the distance between them, it is not possible to perform dimension matching with higher accuracy, and if the size of the work material is different, it is necessary to select an appropriate hole from a myriad of holes. Very inefficient. When using an advanced robot with a built-in numerical controller,
Although it is possible to set the positioning of the work piece on the work table with high accuracy, it is very expensive and requires a sophisticated robot, and the equipment becomes large and the cost becomes high.

[0004]

SUMMARY OF THE INVENTION The present invention has been made as a result of various studies in view of the present situation. A machine tool such as a milling machine having a built-in numerical control device is provided with a position of a work piece on a working table. Is connected to a work material positioning device to position the work piece at a predetermined position, and any point of the work material to be positioned by the work material positioning device is input by a numerical control device with a built-in machine tool such as a milling machine. By controlling the position so that any point of the work material and any point of the work table coincide with each other, the work material can be raised on the work table without using an extremely expensive and sophisticated robot. This is a device that enables accurate positioning and setting.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a milling machine with a built-in numerical controller equipped with a workpiece positioning device of the present invention will be described below with reference to the drawings. 1 to 4 show a double-headed milling machine with a numerical controller equipped with a work material positioning device according to the present invention. This double-headed milling machine 1 is mounted on a base 2 which moves in the left-right direction and left and right. Opposing heads 4 and 5 are arranged with a machining table 3 that moves only in the direction sandwiched therebetween, and cutters 6 and 7 are attached to the facing surfaces of the heads 4 and 5, respectively.

The cutters 6 and 7 are rotated by drive motors 8 and 9 attached to both heads 4 and 5 through an interlocking mechanism as appropriate, and a work piece 10 is positioned and set on the work table 3. Then, the workpieces 10 are cut from both front and rear sides by moving forward and backward by the moving shafts installed inside the two heads 4 and 5.

As shown in FIG. 4, reference numeral 11 denotes a gate-shaped erection stand which is erected on the base 2, and a vertical cylinder 12 is attached to a horizontally-supported support frame 11a and slidable in the cylinder 12. The piston shaft 13 is rotatably installed,
Attach the presser foot 14 to the lower end of the
When cutting the workpiece 10 that has been positioned and set on the processing table 3 by the above, the presser foot 14 is used to receive the receiving table 15 on the processing table 3.
The workpiece 10 to be positioned and set via is pressed from above and fixed on the processing table 3.

Reference numeral 16 is a workpiece positioning device mounted on the side wall of one head 4 of the double-headed milling machine 1.
The double-head milling machine 1 includes a cylinder 17 fixed to a side wall, a piston shaft 18 installed in the cylinder 17, and an L-shaped workpiece contact plate 19 attached to the tip of the piston shaft 18. Connected to the numerical control device.

However, an arbitrary positioning and setting position of the work material 10 on the working table 3 is input in advance by a keyboard attached to a numerical controller incorporated in the double-headed milling machine 1, as shown in FIG. As shown in Fig. 4, the piston shaft 18 is slid forward, and then the numerical control device is used to move and adjust the head portion 4 back and forth, and at the same time, the base 2 is adjusted to be moved left and right by the numerical control device to obtain the workpiece. When the abutting plate 19 is stopped, the machining center axis of the machining table 3 and the center of the workpiece 10 on the machining table 3 coincide with each other, and the workpiece 10 is positioned.

After the workpiece 10 is positioned as described above, when the workpiece 10 is placed on the working table 3 by abutting the workpiece contacting plate 19, the machining center axis of the working table 3 becomes The work material 10 on the work table 3 is aligned with the center of the work material 10, and the work material 10 is positioned and set on the work table 3. After the positioning and setting, the work material 10 is mounted on the support frame 11a of the erection table 11. The piston shaft 13 of the cylinder 12 descends, and the presser foot 14 attached to the lower end of the piston shaft 13 is brought into contact with the workpiece 10 to fix the workpiece 10. At the same time, the piston shaft 18 of the workpiece positioning device 16 retracts and is housed in the cylinder 17.

Then, the contact position of the cutters 6 and 7 is calculated by the numerical controller incorporated in the double-headed milling machine 1, and the base 2 is moved to the left or right based on this calculation, and the work table mounted on the base 2 is attached. 3 is moved to the left and right, and both heads 4 and 5 with cutters 6 and 7 are attached.
Is moved back and forth and adjusted.

After that, the cutters 6 and 7 attached to the facing surfaces of the two heads 4 and 5 are rotated by the drive motors 8 and 9 through the interlocking mechanism, so that the workpiece 1 is processed.
0 is cut from both front and back sides.

Numerals 20 and 20 are limit switches attached to both heads 4 and 5 via connecting plates 21 and 21 in the vicinity of the cutters 6 and 7, and the limit switches of the double-head milling machine 1 are preliminarily provided with the workpiece 10. In addition to entering the distance from the center to the surface to be cut, also enter the range that can be cut by one cutting operation with cutters 6 and 7, and when the cutting amount is too large, these limit switches 20, 20 are activated. Then the cutting work is stopped. In addition,
When the cutting amount is too large, the cutting amounts of the cutters 6 and 7 can be changed to be small.

As described above, in the double-headed milling machine 1 with a built-in numerical controller equipped with the work material positioning device 16 of the present invention, the work material positioning device 16 is attached to one head 4 of the double-head milling machine 1 and the double-head milling machine 1 is mounted. By simply using the numerical control device built in, the work material 10 is raised on the work table 3 so that the machining center axis of the work table 3 and the center of the work material 10 on the work table 3 coincide with each other. Positioning and setting can be performed with high precision, and the workpiece 10 can be cut with high precision.

FIGS. 5 and 6 show another embodiment of the milling machine with a built-in numerical control device according to the present invention. The vertical milling machine 22 with a built-in numerical control device comprises a base 23 at the center.
The work table 24 is mounted on the top of the work table 24 so that it can be moved back and forth, left and right, and the head 25 is arranged above the work table 24.
The cutter 26 is attached to the lower end surface of the workpiece 5 to cut the workpiece 27 that is positioned and set on the workpiece table 24.

Further, the workpiece positioning device 28 has a cylinder 30 fixed to the upper end of a standing support 29, and an L-shaped workpiece contact plate attached to the tip of a piston shaft 31 housed in the cylinder 30. 32 is attached to the vertical milling machine 22 and is configured separately from the vertical milling machine 22 and is connected to a numerical control device built in the vertical milling machine 22.

Therefore, an arbitrary positioning and setting position of the work piece 27 on the work table 24 is input in advance by a keyboard attached to a numerical control device built in the vertical milling machine 22, and the position shown in FIG. Piston shaft 31
Slide forward, and then use the numerical control device to move the work table 24
When the work piece contact plate 32 is stopped by moving the work piece forward and backward and left and right, an arbitrary point on the work table 24 and an arbitrary point on the work piece 27 on the work table 24 coincide with each other. Is positioned.

After the workpiece 27 is positioned as described above, when the workpiece 27 is placed on the processing table 24 by contacting the workpiece contact plate 32, the processing table 24 can be set at an arbitrary point. The work material 27 is positioned and set on the work table 24 in accordance with an arbitrary point of the work material 27 on the work table 24, and when the positioning setting is completed, the work material 27 is appropriately fixed and the work material positioning device 28. The piston shaft 31 is retracted and housed in the cylinder 30.

Then, the hitting position of the cutter 26 is calculated by a numerical control device built in the vertical milling machine 22, and the working table 24 is moved left and right based on the calculation, and the cutter 26 is moved up and down. It

After that, the cutter 26 attached to the lower end surface of the head portion 25 is driven and rotated to cut the workpiece 27.

As described above, in the vertical milling machine 22 with a built-in numerical control device of the present invention shown in FIGS. 5 and 6, the workpiece positioning device 28, which is constructed separately from the vertical milling machine 22, is connected and built in the vertical milling machine 22. Only by moving and adjusting the working table 24 by using the numerical control device described above, the work material can be adjusted so that an arbitrary point on the working table 24 and an arbitrary point on the work material 27 on the working table 24 coincide with each other. 27 processing table 24
The positioning and setting can be performed with high accuracy, and the workpiece 27 can be cut with high accuracy.

In particular, in this vertical milling machine 22, since the working table 24 can be moved forward and backward and left and right, it becomes easier to set the workpiece 27 on the working table 24. As shown, the workpieces 33, 34, 35 and 36 of various sizes can be sequentially positioned and positioned and set.

In the above embodiments, the double-head milling machine with a built-in numerical control device and the vertical milling machine have been described, but the present invention is not limited to such a milling machine with a built-in numerical control device. It can be applied to all machine tools that need to position the material, with the same effect. In the milling machine with a built-in numerical control device of the above-described embodiment, any point of the workpiece to be positioned is input by the keyboard attached to the numerical control device. Regardless of the method, input to a personal computer connected online,
It may be transmitted to the numerical control device online. further,
In the vertical milling machine with a built-in numerical controller of the above embodiment, the workpiece positioning device is configured separately from the vertical milling machine, but as in the case of a double-headed milling machine, the workpiece positioning device is placed on the head of the vertical milling machine. It may be installed and connected to the numerical control device of the vertical milling machine.

[0024]

As described above, according to the present invention, the milling machine having the built-in numerical control device positions the workpiece on the working table of the milling machine at a predetermined position. The numerical control device with a built-in milling machine to which the arbitrary points of the workpiece to be positioned by the workpiece positioning device are input, and the arbitrary points of the workpiece to be positioned and the arbitrary points of the processing table. Since the position is controlled to match, the numerical control device built into the milling machine can be used simply by connecting an extremely simple workpiece positioning device without using an extremely expensive and sophisticated robot. Then, the work material can be positioned and set with high accuracy on the work table.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a milling machine of the present invention.

FIG. 2 is a plan view of essential parts showing an operating state of the milling machine of the present invention shown in FIG.

FIG. 3 is a plan view of relevant parts showing an operating state of the milling machine of the present invention shown in FIG.

FIG. 4 is a perspective view of essential parts of the milling machine of the present invention shown in FIG.

FIG. 5 is a plan view showing another example of the milling machine of the present invention.

FIG. 6 is a front view of the milling machine of the present invention shown in FIG.

FIG. 7 is an explanatory diagram illustrating a plurality of positioning set positions on a processing table of a workpiece to be positioned by the milling machine of the present invention shown in FIG.

[Explanation of symbols]

 1 Double-head milling machine (milling machine) 2 Base 3,24 Machining table 4,5,25 Head 6,7,26 Cutter 10,27,33,34,35,36 Work piece 16,28 Work piece positioning device 17,30 Cylinder 18,31 Piston shaft 19,32 Workpiece contact plate 20 Limit switch 22 Vertical milling machine (milling machine)

Claims (3)

[Claims] 1. A machine tool with a built-in numerical controller is connected to a work material positioning device for positioning a work material at a predetermined position on a working table of the machine tool, and the work material positioning device is used for positioning. A numerical control device with a built-in machine tool that inputs an arbitrary point on the work material controls the position so that the arbitrary point on the workpiece to be positioned matches the arbitrary point on the work table, and Positioning and setting system for workpieces in machine tools with a built-in numerical control device that positions and sets the workpieces on the worktable 2. In a machine tool with a built-in numerical control device, a work material positioning device for positioning a work material at a predetermined position on a working table of the machine tool is connected and positioned by the work material positioning device. A numerical control device with a built-in milling machine that inputs arbitrary points of the workpiece, position-controls so that the arbitrary points of the workpiece to be positioned and the arbitrary points of the processing table match, and A machine tool with a built-in numerical controller equipped with a workpiece positioning device that positions and sets the workpiece on a work table. 3. A double-head type milling machine with a built-in numerical control device, wherein a workpiece positioning device for positioning a workpiece at a predetermined position on a working table that moves only in the left-right direction of the milling machine is provided with a numerical control of the milling machine. Left and right of the work table to be positioned by the numerical control device with a built-in milling machine that is fixedly connected to the head side wall controlled by the device and the arbitrary point of the work material that is positioned by the work material positioning device is input. Direction control and position control of the work piece in the front-rear direction via the head of the milling machine and the work piece positioning device at the same time, so that any point on the work piece to be positioned and any position on the work table can be adjusted. A milling machine with a built-in numerical controller equipped with a workpiece positioning device that positions and sets the workpiece on the processing table by controlling the position so that the points match.