JP2774012B2 - Positioning method and machine tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

How workpiece positioning in the present invention is a numerical control device embedded machine BACKGROUND OF THE, and relates to a numerical control device built machine tool capable of workpiece positioning, more particularly, to a machine tool milling machine or the like The present invention relates to an extremely simple method of positioning a workpiece at a predetermined position on the processing table, and a machine tool therefor .

[0002]

2. Description of the Related Art In a machine tool such as a milling machine, when a workpiece is positioned and set at an arbitrary point on a processing table, an infinite number of holes are usually formed in the processing table of the machine tool, and the size of the workpiece is usually determined. After setting the round bar in the appropriate hole according to the position, the workpiece is brought into contact with the positioned round bar to fix the workpiece, or use an advanced robot with a built-in numerical controller Then, the workpiece is positioned and set by, for example, fixing the workpiece on the processing table so that an arbitrary point thereof coincides with an arbitrary point of the processing table.

[0003]

However, in the method of positioning and setting the workpiece by bringing the workpiece into contact with the round bar positioned and set in the hole of the processing table, an infinite number of holes are formed in the processing table. Dimensions can be adjusted according to the distance between them, but dimensional adjustment with higher precision cannot be performed.When the size of the workpiece is different, appropriate holes must be selected from the myriad of holes. Very inefficient. Also, when using an advanced robot with a built-in numerical controller,
Although the positioning setting of the work material on the processing table can be performed with high accuracy, it requires an extremely expensive and sophisticated robot, which increases the size of the equipment and increases the cost.

[0004]

The present invention SUMMARY OF THE INVENTION has been made a result of various investigations in view of the above circumstances, the positioning
The method is based on the process
In the positioning method, position the workpiece on the worktable.
For this purpose, a contact plate with which the two surfaces of the workpiece abut is positioned at
Attached to the tip of the determining arm and part of the arm
To the part of the head that has the cutter, and
Numerical system built into the machine tool where any point on the plate is input
With the control device, any point on the contact plate and any point on the processing table
Numerical control of the head and the working table so that
While controlling the position of the workpiece.
Two fixed surfaces are brought into contact with the corresponding contact plate, and
This is a positioning method for positioning and setting the work material . There
The present invention relates to a machine tool with a built-in numerical control device.
In the method of positioning the work material, position the work material on the worktable.
Abutment plate against which the two surfaces of the workpiece abut to determine
Is attached to the tip of the positioning member having a fixed base,
Number of built-in machine tools to which any point on the contact plate has been input
Use the value controller to set any point on the contact plate and any
2 while controlling the processing table numerically so that
Move it three-dimensionally, control the position, and then
The specified two surfaces are brought into contact with the corresponding contact plates, and
This is a positioning method for positioning and setting a work material. Ma
In addition, the machine tool of the present invention uses a built-in numerical control device.
Machine with reciprocating controlled worktable and cutter head
Abutment for positioning the workpiece on the worktable in the machine
Plate, and the contact plate extends from the cutter head.
Provided at the tip of the positioning arm
The head and the processing table are reciprocated by the numerical controller.
Position the contact plate on the worktable via the arm.
It is configured so that Alternatively, of the present invention
The machine tool is moved two-dimensionally by the built-in numerical controller.
In a machine tool with a dynamically controlled work table, the base is fixed.
At the end of the specified positioning arm, place the workpiece
Comprising a contact plate for positioning above the work base to move the control two-dimensionally in the above numerical control apparatus, which is constituted to so that to position the contact plate on the work table.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a milling machine with a built-in numerical controller equipped with a workpiece positioning device according to the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a double-headed milling machine with a built-in numerical control device provided with a workpiece positioning device according to the present invention. The double-headed milling machine 1 is mounted on a base 2 that moves in the left-right direction. Cutter heads 4 and 5 are arranged opposite to each other with a worktable 3 that moves only in the direction, and cutters 6 and 7 are attached to opposing surfaces of both cutter heads 4 and 5.

[0006] The cutters 6 and 7 are rotated by drive motors 8 and 9 attached to the respective heads 4 and 5 via an interlocking mechanism as appropriate, and when the workpiece 10 is positioned and set on the processing table 3, The workpiece 10 is moved back and forth by a moving shaft provided inside each of the heads 4 and 5 to cut the workpiece 10 from both front and rear sides.

[0010] As shown in FIG. 4, a portal type erection stand 11 is erected on the base 2, and a vertical cylinder 12 is mounted on a horizontally supported support frame 11 a and can slide and rotate inside the cylinder 12. And the piston shaft 13
Attach the presser foot 14 to the lower end of the
When the workpiece 10 positioned and set on the processing table 3 is cut by the presser 14, the holder 14 is placed on the processing table 3 by the presser 14.
The workpiece 10 that is positioned and set via the tool is pressed from above and fixed on the processing table 3.

[0008] 16 is a positioning arm which is attached to one side wall of the head 4 of the double-ended milling machine 1, composed by a piston shaft 18. Interior to the cylinder 17 and the cylinder 17 is fixed to the head 4 side walls . This arm 1
At the tip of 6 --- the tip of piston shaft 18 ---
An L-shaped contact plate 19 for positioning the material 10 is provided.
You. That is, as shown in FIG. 2 and FIG.
1 having an abutment plate 19 at the tip for positioning the arm 10
Reference numeral 6 extends obliquely from the cutter head 4. So
To avoid disturbing the cutting process,
The cylinder 17 can be shortened and retracted (as in FIG. 3).
This evacuation operation is performed by the numerical system built into the double-headed milling machine 1.
It is performed by the control device.

The contact plate on the worktable 3 is
19 (workpiece 10) ,
Input with the keyboard attached to the numerical control device built in the double-headed milling machine 1 and then the numerical control device
Simultaneously when moving back and forth while numerically controlling the head 4 with
Then, the base 2 is moved left and right while being numerically controlled by the numerical controller.
When the contact plate 19 is stopped after the adjustment, the processing center axis of the processing table 3 and the center of the workpiece 10 on the processing table 3 coincide with each other.
Thus, the positioning of the contact plate 19 is performed.

After the contact plate 19 is positioned in this way, when the workpiece 10 is placed on the worktable 3 in contact with the workpiece contact plate 19, the work center axis of the worktable 3 is and the center of the workpiece 10 on the worktable 3 is matched, the workpiece 10 is Ru are positioned set on the worktable 3. Upon completion of the positioning set, piston shaft 13 of the cylinder 12 which is attached to the support frame 11a of the rack設台11 is lowered, the presser foot 14 attached to the piston axis 13 the lower end is in contact with the workpiece 10 The work material 10 is fixed. At the same time, the piston shaft 18 of the arm 16 retracts and shortens,
(Does not interfere with cutting as in Fig. 3)
You.

Then, the hitting positions of the cutters 6 and 7 are calculated by a numerical control device built in the double-headed milling machine 1, and based on this calculation, the base 2 is moved right and left and the processing table 3 mounted on the base 2. Are adjusted right and left, and both heads 4 and 5 on which cutters 6 and 7 are attached.
Is adjusted to move back and forth.

Thereafter, the cutters 6 and 7 attached to the opposing surfaces of the two heads 4 and 5 are rotated by drive motors 8 and 9 via an interlocking mechanism as appropriate, and the workpiece 1 is rotated.
0 is cut from both front and rear sides.

[0013] 20, 20 is a limit switch attached via a connecting plate 21, 21 on both the head 4 and 5 close to the cutter 6 and 7, the numerical control of the double head milling machine 1
The distance from the center of the workpiece 10 to the surface to be cut
Inputs the separated, switching once with cutter 6 and 7
Enter the range that can be cut by the cutting work, and
If the limit switches are too large,
It operates so that the cutting operation is stopped. In addition,
When the amount of the cut is too large, of a cutter 6 and 7
The cut amount can be changed to be small.

As described above, the workpiece positioning of the present invention is described.
The numerical control device embedded double-ended milling machine 1 provided with the use arm 16, the arm 16 on one of the head 4 of the double head milling machine 1
By simply using the numerical control device built in the double-headed milling machine 1, the machining center axis of the machining table 3 and the machining table 3
The workpiece 10 can be positioned and set on the processing table 3 with high precision so that the center of the upper workpiece 10 coincides, 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 controller according to the present invention.
The processing table 24 is mounted on the top so as to be adjustable in front, rear, left and right.
That is, this is two-dimensionally controlled by the built-in numerical controller.
The movement of the base 23 is controlled. Further , a head 25 is disposed above the processing table 24, and a cutter 26 is attached to a lower end surface of the head 25 to cut a workpiece 27 positioned and set on the processing table 24.

The workpiece positioning arm 28 is
The base is fixed to the floor or bed, etc.
Are installed separately. That is, this arm 28
A support table 29 erected at the upper end and a syringe provided at the upper end thereof
Da 30 and the like. And the tip of this arm 28-
-L-shaped tip of piston shaft 31 of cylinder 30-
Is provided.

[0017] Thus, the contact in the pre-Me work table on 24
An arbitrary positioning set position of the plate 32 (workpiece 27) is input using a keyboard attached to a numerical control device built in the vertical milling machine 22 , and then the numerical control is performed.
Move and adjust the processing table 24 back and forth and left and right with the control device.
Dimensionally control movement --- Stop the contact plate 32
And an arbitrary point on the processing table 24 and an arbitrary point on the contact plate 32
The contact plate 32 is positioned so as to match.

[0018] After such positioning of the abutment plate 32 is made, to bring the workpiece 27, the contact plate 32 in contact with and placed on the work table 24, any of the processing table 24 point and the arbitrary point of work base on 24 workpiece 27 is consistent with the, workpiece 27 is positioned set on the work table 24, Ru finished positioning set. Next, a chat (not shown)
When the work material 27 is fixed on the worktable 24 with the king,
The cylinder 30 is shortened so that it does not interfere with cutting.
The contact plate 32 escapes to the retracted (retracted) position .

The hit position of the cutter 26 is calculated by a numerical controller built in the vertical milling machine 22, and based on this calculation, the working table 24 is adjusted to move left and right and the cutter 26 is adjusted to move up and down.

Thereafter, the cutter 26 attached to the lower end face of the head 25 is driven and rotated to cut the workpiece 27.

As described above, the vertical milling machine 22 with a built-in numerical controller according to the present invention shown in FIGS. 5 and 6 is provided with the arm 28 which is formed separately from the vertical milling machine 22.
The contact plate 32 is held. By simply moving (two-dimensionally) moving and adjusting the processing table 24 using a numerical control device built in the vertical milling machine 22, an arbitrary point on the processing table 24 and the processing table 24 can be adjusted.
Position control so that any point on the upper contact plate 32 matches
The two surfaces of the workpiece 27 which have been separately conveyed
When the workpiece 27 is brought into contact with the plate 32, the workpiece 27 can be positioned and set on the processing table 24 with high accuracy.
7 can be performed with high precision.

In particular, in the vertical milling machine 22, since the working table 24 can be moved and adjusted forward, backward, left and right, the contact plate 32 on the working table 24--the workpiece
27 - - it becomes more easy to position set, FIG. 7
As shown in the figure, workpieces 33, 34, 3 of various sizes
The positioning and setting can also be performed by sequentially positioning 5, 5.

In the above embodiment, an example of a double-headed milling machine or a vertical milling machine with a built-in numerical control device has been described. However, 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, and the same effect can be obtained. Moreover, in the milling machine with a built-in numerical control device of the above embodiment, any point of the workpiece to be positioned is input by a keyboard attached to the numerical control device. , Input to a personal computer connected online,
But it may also be transmitted to the numerical control device online.

[0024]

As described above, according to the present invention, a numerical controller for a machine tool incorporating a numerical controller is provided.
The extremely simple arms 16 and 28 can be used without using very expensive and sophisticated robots.
And workpieces 10 and 2 simply by adding
7 can be positioned and set on the worktables 3 and 24 with high accuracy.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a machine tool according to the present invention.

FIG. 2 is a main part plan view showing an operation state of the machine tool of the present invention shown in FIG.

FIG. 3 is a plan view of a main part showing an operation state of the machine tool of the present invention shown in FIG.

4 is a partial perspective view of the present invention machine tools shown in FIG.

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

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

FIG. 7 is an explanatory view showing a plurality of positioning set positions on a processing table of a workpiece to be positioned by the machine tool of the present invention shown in FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Double-sided milling machine (milling machine) 2 Base 3,24 Processing table 4,5,25 Head for cutter 6,7,26 Cutter 10,27,33,34,35,36 Workpiece 16,28 Positioning arm 17 , 30 Cylinder 18, 31 Piston shaft 19, 32 Contact plate 20 Limit switch 22 Vertical milling machine (milling machine)

Claims (4)

(57) [Claims] An object to be added to a machine tool having a built-in numerical controller.
In the method of positioning the work material, the work material 10 is placed on the worktable 3.
The two surfaces of the workpiece 10 abut to position
Contact plate 19 is attached to the tip of the positioning arm 16.
And a part of the arm 16 has the cutter 6
Attached to a part of the head 4, any point on the contact plate 19
Applicable numerical controller built into the machine tool
An arbitrary point on the contact plate 19 coincides with an arbitrary point on the processing table 3
So that the head 4 and the worktable 3 are numerically controlled.
To control the position of the workpiece 10
The two fixed surfaces are brought into contact with the corresponding contact plate 19, and
Is characterized in that the workpiece 10 is positioned and set.
Positioning method. 2. A machine tool with a built-in numerical controller.
In the method of positioning the work material, the work material 2 is placed on the worktable 24.
7 are positioned in contact with each other to position
The abutment plate 32 is fixed to the positioning member 28 having a fixed base.
At the tip, any point on the contact plate 32 is input
The numerical control device built into the machine tool
An arbitrary point and an arbitrary point on the processing table 24 coincide with each other.
Then, the work table 24 is two-dimensionally moved while being numerically controlled.
To control the position, and then the predetermined two surfaces of the workpiece 27 are
The workpiece is brought into contact with the contact plate 32 and
Positioning and setting the material 27
Method. 3. A reciprocating control by a built-in numerical controller.
Machine with a processing table 3 and a cutter head 4
Abutment for positioning the workpiece 10 on the worktable 3
A plate 19 is provided.
Provided at the tip of a positioning arm 16 extending from
Numerical control of the cutter head 4 and the processing table 3
The reciprocation is controlled by the device, and the contact
The contact plate 19 is configured to be positioned on the processing table 3.
And a machine tool characterized by the following . 4. Two-dimensionally by a built-in numerical controller
In a machine tool provided with a worktable 24 whose movement is controlled,
The tip of the positioning arm 28 with the fixed
A contact plate 32 for positioning the material 27 on the processing table 24 is provided.
The processing table 24 is two-dimensionally controlled by the numerical controller.
By controlling the movement, the contact plate 32 is positioned on the worktable 24.
A machine tool characterized in that the machine tool is configured to: