JP2582915Y2 - Butt butt gauge device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a butting gage device for a bender, and more particularly to a bender butting gage device such as a back gage device for positioning a work piece by a press brake or the like.

[0002]

2. Description of the Related Art A bender abutment gage device known as a back gage device for performing fixed-size positioning of a work material by a press brake or the like is provided so as to be movable in a direction orthogonal to a bending line of the bender. A movable member, having a butting gauge mounted on the movable member, to perform fixed-size positioning of the work material by abutting the work material against the abutting surface of the abutment gauge, The positioning position of the work material by the bender abutment gauge device is determined by setting the punch mounting reference plane position of the bender body as the origin position, that is, the length measurement reference position, and setting the abutment surface of the abutment gauge with respect to the punch mounting reference plane position. The displacement distance is measured as the length measurement distance.

[0003]

[Problems to be Solved by the Invention] The fact that the length measurement reference position of the butting gauge is the punch mounting reference plane position of the bender body is based on the punch mounting reference plane position, the tip position of the punch mounted on the punch mounting reference plane, That is, no problem occurs when the position of the bending processing line is coincident, but when the tip position of the punch die mounted on the punch mounting reference plane is different from the punch mounting reference plane position. It is necessary to finely adjust the moving position of the butting gauge by actually measuring the amount of deviation of the tip end position of the punch die with respect to the punch mounting reference plane position using a jig or the like in order to determine the fixed size of the work material. Occurs.

When changing the shape of the tip of the butting gauge which constitutes the butting surface of the butting gauge, in the case of the NC type, the butting gauge is set to a predetermined origin by operating the origin button of the NC device. Position, and under this condition, measure the distance between the tip of the punch die and the position of the abutment surface of the abutment gauge using a jig, calipers, etc. Therefore, it is necessary to finely adjust the moving position of the butting gauge.

If the striking gauge has a long stretch,
Deflection occurs in the butting gauge, which causes an error in positioning of the work piece in fixed size. In such a case, it is necessary to finely adjust the moving position of the butting gauge by performing trial bending or the like.

[0006] In any case, fine adjustment of the moving position of the butting gauge takes time and lowers the operating rate of the vendor.

The present invention has been made in view of the above-mentioned problems in the conventional butting device for benders, and the position of the tip of the punch die is different from the position of the reference plane for attaching the punch. However, even if the shape of the end of the butting gauge is changed, or if the butting gauge is flexed due to the long stretch of the butting gauge, troublesome fine adjustment of the moving position of the butting gauge is required. It is an object of the present invention to provide a bender butting gauge device which is improved so as to be able to perform a fixed size positioning of a work material with high accuracy without performing.

[0008]

According to the present invention, there is provided a movable member provided to be movable in a direction orthogonal to a bending line of a bender, and a projection mounted on the movable member. A contact gauge, and a punching die of the bender is used as a bender contact gauge device for performing fixed-size positioning of the work material by abutting the work material against the contact surface of the contact gauge. The present invention is attained by a bender abutment gauge device wherein an origin position setting groove is formed at a position defined with respect to the abutment surface.

[0009] In the above-described hitting gauge device for a bender according to the present invention, the hitting gauge is mounted on the movable member so as to be relatively displaceable, and the hitting gauge is connected to a connecting portion with the movable member. It may be configured to be selectively fixedly connected to the movable member by a fastening operation of a provided fastening device.

Further, the movable member is in a free state so that the abutment gauge can be slightly moved when the punch die of the bender and the abutment gauge setting groove are engaged with each other. It is characterized by becoming.

[0011]

According to the above construction, the bias between the leading end position of the punch die and the position of the abutment surface of the abutment gauge is caused by engagement of the punch die of the bender with the groove for setting the origin position. The distance is uniquely determined by the specified position of the home position setting groove with respect to the abutment surface, and the abutment of the abutment gauge with respect to the tip end position of the punch die is determined from the specified value of the installation position of the home position setting groove with respect to the abutment surface. The position of the contact surface is naturally defined.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment in which the vender butting gauge device according to the present invention is applied to a press brake as a back gauge device. The press brake has an upper apron 1 that moves up and down and a fixed lower apron 3.

A punch die 7 having a V-shaped tip 5 is fixedly mounted on the upper apron 1 by a fastener (not shown) in a state of being joined to a punch mounting reference surface 9, and a V-shaped is mounted on the lower apron 3. A die 13 having a groove 11 is fixedly mounted by a fastener (not shown).

A back gauge device 15 is provided behind the upper apron 1 and the lower apron 3. The back gauge device 15 is screwed to the ball screw shaft 17 extending in the direction perpendicular to the bending line, that is, in the left-right direction in FIG. 1, and bent by rotation of the ball screw shaft 17. The ball nut member 19 and the ball nut member 19 that move in a direction perpendicular to the processing line, that is, in the left-right direction in FIG.
And a gauge support member 23 engaged with and mounted on the support rail member 21. A back gauge (butting gauge) 25 is fixedly mounted on the gauge support member 23. I have.

The back gauge 25 has an abutting surface 27 at its tip.
The workpiece is abutted against the abutting surface 27 to perform fixed-size positioning of the workpiece.

The ball screw shaft 17 is drivingly connected to a servomotor 31 by a coupling 29,
1 to move the back gauge 25 together with the ball nut member 19, the support rail member 21, and the cage support member 23 to an arbitrary moving position in a direction orthogonal to the bending line.

The servo operation of the servo motor 31 is controlled by a servo drive circuit 35 to which an operation amount signal is given from an NC unit 33. The NC device 33 receives the home position setting command signal from the operation panel 37, and
5 is reset and the operation amount signal is output to the servo drive circuit 35 so that the abutment surface 27 is located at a predetermined fixed-size positioning position using the origin position as a length measurement reference position.

The punch 7 is provided on the upper surface of the back gauge 25.
A V-shaped origin position setting groove 39 with which is engaged. The origin position setting groove 39 is accurately formed at a position defined with respect to the abutting surface 27, and the deviation distance L of the origin position setting groove 39 with respect to the abutting surface 27 is an invariable known specified value. It is input to the NC device 33.

As shown by a virtual line in FIG. 1, the back gauge 25 is moved by the servo drive of the servo motor 31 to set the origin position of the back gauge device 15 having the above-described configuration. 39 is positioned substantially below the punch die 7. The height position at this time may be the height position where the back gauge 25 is placed on the die 13.

Next, the servo system is in a free state (servo off).
Then, the back gauge 25 is freely movable in a direction perpendicular to the bending line (the left-right direction in FIG. 1), and under this state, the upper apron 1 is driven downward to lower the punch die 7. . Due to the lowering of the punch die 7, the V-shaped tip 5 of the punch die 7 engages with the groove 39 for setting the origin position of the back gauge 25. The back gauge 25 slightly moves in the direction orthogonal to the bending line so that the V-shaped tip 5 of the mold 7 and the origin position setting groove 39 of the back gauge 25 coincide with each other.

When the V-shaped tip portion 5 of the punch die 7 and the groove 39 for setting the origin position of the back gauge 25 coincide with each other, the position of the abutting surface 27 of the back gauge 25 is determined by the punch die. 7, that is, a position deviated by a distance exactly equal to the deviation distance L with respect to the actual bending line position A.

In this state, the servo system is returned to the operating state, and an origin setting command signal is given from the operation panel 37 to the NC device 33 to reset the origin position of the back gauge 25.

After this reset, the NC unit 33
Is X- if the measuring distance for fixed-size positioning is X
An operation amount signal corresponding to the distance L is output to the servo drive circuit 35.

Thus, the contact surface 2 of the back gauge 25
The position 7 is not the punch mounting reference plane 9 but the V-shaped tip 5 of the punch die 7, that is, the actual bending line position A.
Is located at a position deviated exactly by the measurement distance X with respect to
In any case, the fixed size positioning of the work material is accurately performed with reference to the actual bending processing line position A.

As a precondition for setting the origin position of the back gauge device 15, the position of the punch die 7 and the position of the die 13 must be adjusted each time the die is replaced.

In the back gauge device 15, as shown in FIG. 2, a plurality of back gauges 25 each having an origin position setting groove 39 may be provided on the support rail member 21, or as shown in FIG. , The support rail member 21 may be driven by the ball screw shafts 17 of two independent driving systems. In this case, the support rail member 21 is provided so as to be tiltable with respect to a direction orthogonal to the bending line as indicated by a virtual line in FIG. And the extension direction of the V-shaped tip portion 5 of the punch die 7 may correspond to non-parallelism.

When the origin position of the back gauge device 15 is set, the back gauge 25 can be freely moved so that the V-shaped tip 5 of the punch die 7 and the origin position setting groove 39 of the back gauge 25 coincide with each other. This means that, besides setting the servo system in a free state, the back gauge 25 is mounted on the gauge support member 23 so as to be relatively displaceable.
A tightening / closing device is provided at a connection portion between 5 and the gauge support member 23,
The fastening may be performed by selectively fixing and connecting the back gauge 25 and the gauge support member 23 by the fastening operation of the fastening device.

FIGS. 4 and 5 show an embodiment using a tightening and loosening device. The clamping device is designated in FIG. 4 by the reference numeral 41 and is constituted by a hydraulic cylinder device. In the tightening / closing device 41, the cylinder member 43 is fixedly mounted on the gauge support member 23, and the back gauge 25 is loosely fitted to the piston rod 45 with a hole 47, that is, fitted to the piston rod 45 so as to be relatively displaceable in all directions. doing. A brake plate 49 is attached to the tip of the piston rod 45, and the back gauge 25 is sandwiched between the brake plate 49 and a pressure surface 51 formed by the lower bottom surface of the cylinder member 43 via a friction plate 53.

The tightening and loosening device 41 is configured such that the piston 55
7, the disc spring 57 is urged upward in the drawing.
The back gauge 25 is sandwiched between the brake plate 49 and the pressure surface 51 by the spring force of
5 is fixedly connected to the gauge support member 23, and when a fluid pressure such as a hydraulic pressure is supplied to the cylinder chamber 59, the piston 55 moves downward in the figure against the spring force of the disc spring 57, The switching operation is performed between the brake plate 49 and the pressure surface 51 in a relaxed state in which the sandwiching of the back gauge 25 is released.

A centering bush 61 made of a rubber-like elastic material is fitted and mounted in the hole 47.
The piston rod 45 and the back gauge 2 are arranged so that the piston rod 45 and the hole 47 are concentric in a free state.
5 and acts elastically.

The back gauge device 15 in this embodiment
The origin position is set by moving the back gauge 25 to position the origin position setting groove 39 substantially below the punch 7 in the same manner as in the above-described embodiment.

In this state, the cylinder chamber 5 of the tightening / closing device 41 is
A fluid pressure such as a hydraulic pressure is supplied to 9 to make it relaxed, so that the back gauge 25 can be displaced relative to the piston rod 45 in all directions.

Next, the upper apron 1 is driven to descend to lower the punch die 7. By the lowering of the punch die 7,
The V-shaped tip 5 of the punch die 7 engages with the groove 39 for setting the origin position of the back gauge 25 and engages with the V-shaped tip 5 of the punch die 7 in accordance with the engagement. The back gauge 25 moves with respect to the punch die 7 so that the origin position setting groove 39 of the gauge 25 coincides with the groove 39.

Also in this case, when the V-shaped tip 5 of the punch die 7 and the groove 39 for setting the origin position of the back gauge 25 coincide with each other, the abutment surface 2 of the back gauge 25 is formed.
The position 7 is located at a position deviated by a distance exactly equal to the deviation distance L from the V-shaped tip portion 5 of the punching die 7, that is, the actual bending line position A. The tightening device 41 is returned to the tightened state at
Is fixedly connected to the gauge support member 23, and an origin setting command signal is given from the operation panel 37 to the NC device 33 to reset the origin position of the back gauge 25, thereby obtaining the same operation and effect as in the above-described embodiment. Can be

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to this, and various embodiments are possible within the scope of the present invention. Some will be apparent to those skilled in the art.

[0037]

As will be understood from the above description, according to the bender abutment gauge device of the present invention, the tip of the punch die is formed by engaging the bender punch die with the groove for setting the origin position. The deviation distance between the position and the position of the abutment surface of the back gauge (abutment gauge) is uniquely determined by the defined position of the origin position setting groove with respect to the abutment surface, and the abutment of the origin position setting groove is performed. Since the position of the abutment surface of the abutment gauge with respect to the tip position of the punch die is defined by the specified value of the position with respect to the surface, even if the tip position of the punch die differs from the punch mounting reference surface position, Even when changing the shape of the end of the butting gauge, or even if the butting gauge is flexed and deformed due to the long stretch of the butting gauge, it requires troublesome fine adjustment of the moving position of the butting gauge. Sizing the positioning of the workpiece is to be performed with high accuracy without the.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment in which a bender butting gauge device according to the present invention is applied to a press brake as a back gauge device.

FIG. 2 is a schematic structural view showing another embodiment of a butting gauge device for a vendor according to the present invention.

FIG. 3 is a schematic structural view showing another embodiment of the butting gauge device for a vendor according to the present invention;

FIG. 4 is a longitudinal sectional view showing another embodiment of the butting butting gauge device for a vender according to the present invention;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

[Explanation of symbols]

 Reference Signs List 7 punch die 9 punch mounting reference surface 13 die die 15 back gauge device 17 ball screw shaft 23 gauge support member 25 back gauge 27 butting surface 31 servo motor 33 NC device 39 origin position setting groove 41 tightening device

Claims (3)

(57) [Scope of request for utility model registration] A movable member provided to be movable in a direction perpendicular to a bending line of the bender, and a butting gauge mounted on the movable member. A bender abutment gauge device for performing fixed-size positioning of the work material by being abutted by the work material, wherein a groove for setting the origin position with which the punch die of the bender is engaged is defined with respect to the abutment surface. A butting gauge device for a bender, which is formed at a predetermined position of the butting gauge. 2. The striking gauge is attached to the movable member so as to be relatively displaceable, and the striking gauge is selectively attached to the movable member by a fastening operation of a fastening device provided at a connection portion with the movable member. The butting butting gauge device for a vendor according to claim 1, wherein the device is configured to be fixedly connected to the vending device. 3. The movable member is in a free state so that the contact gauge can be slightly moved when the punch die of the bender is engaged with the groove for setting the origin position of the contact gauge. The butting gauge device for a vendor according to claim 1.