JP3295130B2 - NC corner shear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC corner shear, and more particularly, to an NC corner shear capable of reducing input of corner cut shape data.

[0002]

2. Description of the Related Art Conventionally, in an NC corner shear, a pair of V-shaped upper and lower blades intersecting at right angles cuts a corner portion of a rectangular work by a pair of upper and lower blades. A slide groove extending along each side direction of the upper and lower blades and orthogonal to each other is provided, and a work stopper slidable and fixed along the slide groove is provided so as to be rotatable and positionable. At the time of machining, for example, each work stopper is positioned in a direction perpendicular to the slide groove, and two adjacent sides of a rectangular work are brought into contact with the work stopper to position the work. In general, corner cutting is performed by cutting a corner of a work into a rectangular shape with a lower blade.

Referring to FIGS. 7 and 8, when performing corner cutting at four corners of a rectangular work W, first, the left and right work stoppers 1L, 1R are perpendicular to the longitudinal direction of the slide grooves 3L, 3R. To be positioned. And
In order to cut the corner A in the figure, the left work stopper 1L is moved along the slide groove 3L to a position L1 from the right side of the upper blade 5U, and the right work stopper 1R is similarly moved along the slide groove 3R. It is moved and positioned at the position of R1 from the left side of the upper blade 5U. In this state, two adjacent sides of the work W are abutted against the left and right work stoppers 1L and 1R to cut the A corner.

Next, in order to cut the B corner of the work W, the left work stopper 1L is moved along the slide groove 3L to a position L2 from the right side of the upper blade 5U, and the right work stopper 1R is similarly moved. The upper blade 5U is moved along the slide groove 3R and positioned at the position of R2 from the left side of the upper blade 5U. In this state, two adjacent sides of the work W are abutted against the left and right work stoppers 1L and 1R to cut the B corner.

Thereafter, the left and right work stoppers 1 are moved in the same procedure.
L and 1R are moved and positioned, and the work W is rotated to abut against the work stoppers 1L and 1R and positioned to cut the C and D corners.

[0006]

However, according to such a conventional technique, even when a corner cut similar to that of an already-processed work is performed, the shape data of each corner is measured using a scale or the like. NC measured value
Work efficiency is poor because corner cuts must be made by inputting to the control unit.

An object of the present invention is to pay attention to such a conventional technique, and it is possible to easily make a corner cut similar to a work on which a corner cut has already been made, thereby improving work efficiency. And to provide an NC corner shear capable of improving the above.

[0008]

Means for Solving the Problems Conventional problems as described above
In view of the above, the present invention provides a V-shaped
V-shape that cuts the corner of the work in cooperation with the lower blade
A slide with an upper blade is provided so that it can move up and down.
A vertical drive device for moving the slide up and down is provided,
Perpendicular to each other on the table along the upper and lower blades
Position the work in the left and right slide grooves
Left and right work stoppers are provided for movement
Left and right circuits for moving the left and right work stoppers
A motor is provided to move the left and right work stoppers.
And a control unit for controlling the vertical drive device.
In the girder NC corner shear, the control unit includes:
Control the vertical drive to move the slide down
Function to hold and a model pre-processed for the upper blade
Direct contact with the corners of the product and the model product
When the left and right work stoppers abut against
Read the position of the left and right work stoppers and
Function to store data as
Position the left and right work stoppers based on the
Control the left and right servo motors to position
A function for controlling the movement and positioning of the work stopper.
It is equipped.

[0009]

According to the NC corner shear according to the present invention,
The control unit controls the moving device, so that the work stopper is moved and positioned along the slide groove formed on the upper surface of the table on which the work is placed, and is rotated and positioned.
The workpiece is brought into contact with each of the workpiece stoppers and positioned to perform corner cutting . In co Nakatto, if there is a stationery product already subjected to corner cut, prior to processing, the corner cut portion of the stationery products
The workpiece stopper is positioned by directly contacting the upper blade in the lowered state to position the workpiece at the time of processing, and by contacting the left and right workpiece stoppers with the template product . A control unit is a memory as shape data along with reading the workpiece stopper position. Then, when the corner cutting, moving positioning the left and right of the work stopper according to the memory shape data, word to the right and left of the workpiece stopper
The workpiece to be machined is positioned by bringing the workpiece into contact with the workpiece, and corner cutting is performed by the upper blade and the lower blade.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the entire NC corner shear 7. The NC corner shear 7 has an upper table 11 on which a work W is placed horizontally above the machine base 9, and a strong electric box 13 is provided on a side surface of the machine base 9. In addition, above the upper table 11,
The control unit 1 connected to the high-power box 13 by the struts 15
7 are provided. An NC operation panel 19 is provided on a front surface of the control unit 17. And, in the central portion of the upper table 11, for example, a slide 21 which reciprocates in the vertical direction by the vertical drive unit (not shown) such as a hydraulic cylinder is provided. On this slide 21,
An upper blade 5U having a V shape is attached from two orthogonal sides.

A movable table 23, which is movable in a small amount in the front-rear direction and can be positioned, is provided on the front side of the upper table 11.
Is provided. The movable table 23 is provided with a lower blade 5L having a V-shape from two orthogonal sides (not shown) provided at the rear end of the movable table 23 by a dial 25 provided at the center of the front end face, and the above-described lower blade 5L. Upper blade 5
The clearance with U can be adjusted.

On the upper surface of the movable table 23, there are formed two right and left slide grooves 3L, 3R which are orthogonal to each other and form an X-shape. The slide grooves 3L and 3R are T-shaped grooves,
A left work stopper 1L and a right work stopper 1R are loosely fitted into the left and right slide grooves 3L and 3R, respectively, so as to be freely slidably positioned. That is, each work stopper 1
Servo motors 27L and 27R are provided on L and 1R. The servo motors 27L and 27R move the work stoppers 1L and 1R along the slide grooves 3L and 3R by, for example, a gear device (not shown). ing. The servomotors 27L and 27R are controlled by the control unit 17 by operating the NC operation panel 19, and perform the movement positioning of the work stoppers 1L and 1R.

Further, the work stoppers 1L and 1R have a circular shape with a portion cut out, are rotatable about a rotation shaft 29, and are rotated by an angle lock lever 31 attached to the rotation shaft 29. It is designed to be fixed. Each of the notched portions is provided with an elongated plate-shaped gauge 33 for contacting the workpiece W. Therefore, by operating the angle lock lever 31, the gauge 33 can be set at a right angle to the slide grooves 3L and 3R or at a predetermined angle.

Referring also to FIG. 2, the NC operation panel 19 provided in the control unit 17 includes a stopper operating unit 35 on the right (right side in FIG. 2) half and a left (left in FIG. 2) half. Has a data input unit 37.

The stopper operation section 35 performs switching for moving the work stopper by manual operation or automatic operation, and a work stopper changeover switch 39 for determining which one of the left and right work stoppers 1L and 1R is operated, and a manual operation. Movement switch 41 for controlling the movement amount at the time, or switch 4 for starting and stopping automatic operation.
3 and the like are provided.

The data input section 37 is for inputting data for moving the work stoppers 1L and 1R in automatic operation. The upper part has a display panel 45 for displaying the machining program number, the machining process and the number of machining, and the left and right work stoppers 1L,
It has a display panel 47 for displaying the rotation angles of the 1R slide grooves 3L, 3R and for displaying the set values and current values of the positions in the slide grooves 3L, 3R. The lower part has a numeric keypad 49 and the like for inputting numerical values.

Since the work stoppers 1L and 1R are positioned by manual operation and corner cutting is performed as described above, the operation is switched to manual operation by the stopper operation unit 35, and left and right is operated by the work stopper changeover switch 39. Of the work stoppers 1L, 1R of the servo motor 27L,
By controlling 27R, the work stoppers 1L, 1R
Can be positioned at a predetermined position.

On the other hand, based on FIGS. 3 to 5, input of shape data in the case where the same corner cut as the already cut corner of the work W is performed on the work W by automatic operation will be described.

Referring also to FIG. 6, first, the teaching operation mode is set by the NC operation panel 19 (step S1). Then, the corner portion of the model product WA, which has already been subjected to the corner cut, is brought into direct contact with the upper blade 5U lowered by the control of the controller 17 (step S2).

Then, the work stopper changeover switch 39 of the NC operation panel 19 is set to the position of the left work stopper (step S3L), and the movement switch 41 is rotated forward so that the left work stopper 1L is moved to the model product WA.
(Step S4L). The controller 17 reads the left and right work stoppers 1L, 1R in this state (S5L step) and stores them as shape data (S6L step).

Subsequently, the work stopper changeover switch 39 of the NC operation panel 19 is set to the position of the right work stopper (S3R step), and the position of the right work stopper 1R is read in the same manner and stored as shape data (S4R). ~ S6R step).

Here, in the corner cutting shown in FIG. 3, both the left and right work stoppers 1L and 1R need to be set at 90 degrees with respect to the slide grooves 3L and 3R, but in the case shown in FIG. Is the left work stopper 1L
Must be set to 45 degrees, and the right work stopper 1R must be set to 135 degrees. In the case shown in FIG. 5, the left work stopper 1L is 135 degrees, and the right work stopper 1L is 135 degrees.
R must be set to 45 degrees.

The above steps are performed according to the processing order (S7).
Step), Work stopper 1 for all corners
After the positions of L and 1R are stored as shape data, teach-in is completed (S8 step). If all the corners have not been completed yet, the work W is rotated (step S9), and the process returns to step S2 to repeat the above process.

On the other hand, when performing a corner cut, the control unit 17 sequentially controls the servomotors 27L and 27R to move the left and right work stoppers 1L and 1R based on the shape data input as described above. Since positioning is performed, the operator positions the work W by abutting the work W on the left and right work stoppers 1L and 1R, and performs corner cutting by the upper and lower blades 5U and 5L.

As described above, when the same corner cut as the already cut corner of the model product WA is performed on the work W, it is possible to input the shape data of the corner cut by performing the teaching using the template product WA. Since it is possible, the operator does not need to input the shape data for all corners as in the related art. For this reason,
Work efficiency can be improved, and occurrence of input errors can be reduced.

In the above embodiment, the present invention is not limited to the above embodiment, but can be embodied in various modes by making appropriate changes.

[0028]

The present invention can be understood from the above description of the embodiments.
To move the slide 21 having the upper blade 5U up and down
Drive device and left and right slide grooves 3L, 3R for
Left and right work stoppers 1 movably along
Left and right servo motors 27L for moving L, 1R,
27R is controlled by the control unit 17, and
The controller 17 controls the vertical drive device to control the slide
21 is held in a lowered state, and
The corner of the shaped product WA directly contacts the upper blade 5U,
Also, the left and right work stoppers 1L,
Read the position at the time of 1R contact and read the shape data
And the shape data stored in the memory
The left and right work stoppers 1L and 1R to predetermined positions
Since it has the function of positioning, slide
21 and lower the model product WA against the upper blade 5U.
The contact can be done safely and easily
is there. Then, the left and right work stoppers 1L and 1R are
In addition to reading the position when contacting the prototype product WA,
After storing the data as shape data,
The positioning of the par 1L and 1R can be reproduced, and
Teaching when there is a shaped product WA and then
Corner cutting process can be performed efficiently
It is.

That is, in the present invention, the actual code
For the upper blade 5U used for the knife cut, the model product W
Teaching by directly contacting the corner of A
Therefore, if it is after re-polishing of the upper blade 5U
No need for correction, etc.
Is possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an NC corner shear according to the present invention.

FIG. 2 shows an NC provided in a control section of an NC corner shear.
It is a front view showing an operation panel.

FIG. 3 is an explanatory diagram showing a teaching state of a prototype product when right and left work stoppers are at 90 degrees.

FIG. 4 is an explanatory diagram showing a teaching state by a prototype product when the left work stopper is at 45 degrees and the right work stopper is at 135 degrees;

FIG. 5 is an explanatory diagram showing a teaching state of a prototype product when the left work stopper is at 135 degrees and the right work stopper is at 45 degrees.

FIG. 6 is a flowchart showing a teaching operation using a prototype product.

FIG. 7 is an explanatory diagram showing processed shape data in a conventional corner cut.

FIG. 8 is an explanatory diagram showing a positional relationship between a work stopper, a work, and an upper blade in a conventional corner cut.

[Explanation of symbols]

 1L, 1R Left and right work stoppers 3L, 3R Left and right slide grooves 5U, 5L Upper and lower blades 7 NC corner shear 11 Upper table 17 Control unit 27 Servo motor (moving device) W Work WA Stationery product

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B23D 33/10 B23D 15/06 B23Q 15/00

Claims (1)

(57) [Claims] 1. A V-shaped lower blade provided on a rear side of a table.
(5L) and work (W) corner cut
The slide (21) provided with a V-shaped upper blade (5U)
The slide (21) is vertically movable and the slide (21) is moved up and down.
A vertical driving device for moving the upper and lower blades (5
U, 5L) and provided at right angles to the table
The left and right slide grooves (3L, 3R)
Left and right work stoppers for positioning (W)
(1L, 1R) are provided movably, and the left and right
Left and right supports for moving the work stoppers (1L, 1R).
Robot motors (27L, 27R) are provided.
Stopper (1L, 1R) and positioning
NC provided with control unit (17) for controlling driving device
In the corner shear, the control unit (17) may
The slide (21) is lowered by controlling the vertical drive device.
Function and the upper blade (5U)
Directly on the corners of the machined stationery (WA).
Touch the said model product (WA)
The above left when the work stopper (1L, 1R) is in contact
Read the position of the right work stopper (1L, 1R)
Function to store both as shape data and before processing
The left and right workstations are stored based on the stored shape data.
Left and right to position the pallets (1L, 1R) at predetermined positions.
Servo motors (27L, 27R) to control
To control the movement and positioning of the stopper (1L, 1R)
An NC corner shear characterized by having a noh .