JPH1177184A - Finishing machine for shape steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enlarge a workable range, and to shorten a working tact time. SOLUTION: To set the upper dead center position of a punch 35 according to the plate thickness of a work W, on the piston rod 23 of a fluid pressure cylinder 25 moving the punch 35, a dog 43 equipping with first detecting surface 43A and second detecting surface 43B, is provided. And, first proximity sensor 47, second proximity sensor 49 and proximity sensor 51 detecting the movement of the dog 43, are provided on the supporting frame 21 side. Therefore, by detecting the upper dead center and the bottom dead center of the punch 35 by the plural proximity sensors 47, 49 and 51, the upper dead center of the punch 35, which is suitable for the plate thickness of the work W, can be set, and the working tact time is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a section steel processing machine, and more particularly to a section steel processing machine for performing an appropriate processing such as a punching process or a cutting process on a shape steel such as an angle material or a flat bar. About the machine.

[0002]

2. Description of the Related Art Conventionally, a section steel processing machine for performing processing such as punching and cutting on a section steel such as an angle material or a flat bar is constructed as shown in FIGS.

[0003] That is, as shown FIG 10, when subjected to punching in the thickness of the thin lip groove-shaped steel W ₁ is bottom dead center of the stroke S (punch 101 of the punch 101 and the die 103 and the top dead Distance between points). The stroke S is, when subjected to punching to the thick angle bar W ₂ such as shown in Figure 11, have been set by the stroke S, such as to allow processing,
The top dead center and the bottom dead center during automatic operation machining are fixed at positions suitable for machining a workpiece having a maximum thickness, and the stroke S is constant irrespective of the shape and thickness of the workpiece.

Further, as shown in FIG. 12, when performing drilling on the flange portion F of the lip groove-shaped steel W _1, insert the punch holder 107 from the lip groove-shaped steel W ₁ of the opening 105, the punch The punch 101 is attached to the holder 107, and the punch holder 107 is stroked to make a hole. Punch holder 107 is shaped to avoid interference with the lip members of the lip groove-shaped steel W ₁ in this stroke operating range, it is assumed that with the strength further withstand the load during punching.

Furthermore, shaped steel machine shown in Figure 13, the die 103 is fixed to the inside of the lip groove-shaped steel W _1, subjected to drilling by a stroke of the punch 101 from the outside of the flange portion F format belongs to.

[0006]

As shown in FIGS. 10 and 11, in the conventional section steel working machine described above, when a thin work is machined, there are many unnecessary strokes S, and the machining time is also correspondingly wasted. Spending on. Further, in the section steel working machine shown in FIG. 12, there is a problem that the punching holder 107 cannot have a strength enough to withstand a load depending on the shape and material of the work to be machined.

Further, the section steel processing machine shown in FIG. 13 has a problem that the discharge of the scrap is unstable.

[0008] It is an object of the present invention to provide a section steel working machine which enlarges the workable range and shortens the working tact time.

[0009]

According to a first aspect of the present invention, there is provided a section steel working machine for processing a workpiece by cooperation of a punch and a die. It is characterized by comprising a detecting means for detecting a position of the punch for setting a top dead center position of the punch based on a plate thickness.

Therefore, the position of the top dead center with respect to the optimum punch can be automatically set by the detecting means from the work thickness data, and the machining speed is increased by the amount of no waste of movement, and the machining tact time is reduced. And the working range can be expanded.

According to a second aspect of the present invention, there is provided a section steel working machine according to the first aspect, wherein the detecting means includes a plurality of detecting sections provided on a driving member for moving the punch. And a plurality of detection members provided on the fixed side for detecting the movement of the detection member.

Therefore, the top dead center position of the punch is detected by a detecting member provided with a plurality of detecting portions provided on a driving member for moving the punch and a plurality of detecting members provided on the fixed side. For this reason, the top dead center position of the punch can be set to an optimum position depending on the thickness of the work.

Further, according to a third aspect of the present invention, in the second aspect of the present invention, the detecting member includes a detecting member for detecting a bottom dead center of the punch and a plurality of top dead centers of the punch. A plurality of detection members for detecting points are arranged in a line, and the detection member has a first detection surface for detecting the top dead center of the punch corresponding to the detection member,
A second detection surface for detecting the bottom dead center of the punch and the top dead center of the punch is provided at a position separated from the detection surface.

Therefore, by operating the detecting member having the first detecting surface and the second detecting surface, a plurality of upper dead points of the punch can be set at the lower dead point of the punch by the plurality of detecting members.

Therefore, there is no waste of movement, the machining speed is increased, and the machining tact time can be shortened.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

First, the overall arrangement of the section steel processing machine and the incidental equipment will be schematically described for easy understanding.

Referring to FIG. 7, FIG. 8 and FIG. 9, the steel shaping machine 1 is provided with a machine body 3, and a right punching unit 5 and a left punching unit 7 And a cutting unit 9 is provided at the center of the front part of the processing machine body 3.

The right and left punching units 5 and 7
Is for drilling a section steel, and the cutting unit 9 is for cutting a section steel.

A material feeding table 11 is disposed behind the processing machine body 3 (left side in FIGS. 1 and 2), and is disposed on the material feeding table 11 in the front-rear direction (in the left-right direction in FIGS. 1 and 2). A plurality of rotatable V-rollers 13 are supported at appropriate intervals. Although not shown, a transfer table is disposed in front of the processing machine main body 3 (right side in FIGS. 1 and 2).

One end of the material feeding table 11 (FIG. 1,
At the left end side in FIG. 2), a feeder device 15 is provided that is movable in the front-rear direction and can be positioned. The feeder device 15 grips the tail end of the shaped steel and sends the shaped steel to the processing machine body 3 side. It is used for positioning and positioning.

A work holding unit 17 is provided near the rear side of the machine body 3 to press and fix the shaped steel against the working reference surface during working. Further, a control device 19 is provided for calculating input machining data and controlling each actuator based on the calculation result.

With the above configuration, the shaped steel to be processed is placed on the V roller 13 in the material feeding table 11 and the material feeding device 15 clamps the tail end of the shaped steel to feed the shaped steel. Is positioned at the processing position of the processing machine body 3. Next, while the shaped steel is positioned and fixed by the work holding unit 17, a punching process is performed by the left and right punching units 5 and 7, and further, the material is fed, and a cutting process is performed by the cutting unit 9. Is carried out at the transfer table.

Next, the section steel processing machine 1 which is a main part of the present invention will be described in more detail. In addition, the shape steel processing machine 1
Are the left and right punching units 5, 7 as described above.
However, since the left and right punching units are provided for members having the same configuration, only the configuration of the right punching unit 5 will be described in detail, and the description of the left punching unit 7 will be omitted.

Referring to FIG. 1, right punching unit 5
Is provided with a support frame 21 having an upper surface formed in a V-shape on the processing machine main body 3, and a hydraulic cylinder having a piston rod 23 movably up and down on one side of the upper surface of the V-shape. 25 are provided.

A guide member 27 is provided on the other side of the V-shaped upper surface, and a punch holder 29 is provided along the guide member 27 so as to be reciprocally movable. The punch holder 29 is movable by a driving member (not shown) between a position indicated by a two-dot chain line in FIG. 1 and a position indicated by a solid line. The punch holder 29
Has a U-shape in which a lower arm 33 supporting the die 31 and an upper arm 37 supporting the punch 35 movably up and down are integrally formed. A punch head 35H is formed at the upper end of the punch 35.

A striker 39 is mounted on the tip of the piston rod 23 provided on the fluid pressure cylinder 25, and a punch head 35H provided on the punch 35 is fitted into a T groove 39T formed on the striker 39. I have. Then, by operating the fluid pressure cylinder 25, punching is performed on one side of the section steel W by the die 31 and the punch 25.

To detect the top dead center and the bottom dead center of the punch 25, a dog bracket 41 is integrally provided on the piston rod 23 by a fastening member, and a dog 43 serving as a detection member is provided on the dog bracket 41. The dog 43 has a second detection surface 43B separated from a first detection surface 43A, which is a detection unit, by a predetermined non-detection unit.

On the other hand, a detection member for detecting the dog 43 is provided on the fixed support frame 21. More specifically, a sensor bracket 45 is fixed to the support frame 21, and the sensor bracket 45 detects the top dead center of the punch 35 as a detecting member.
7, a second proximity sensor 49 and a proximity sensor 51 for detecting the bottom dead center of the punch 35 are provided in parallel.

The operation of the above configuration will be described first. That is, the work size and the work product data are input to the control device 19. Then, the machine is started by placing the shaped steel as the work on the V roller 13 provided on the material feeding table 11. The tail end of the section steel is detected and clamped by the material feeding device 15, and the section steel and the punch holder 2 are determined based on the calculation result of the processed product data.
9 is positioned, the hydraulic cylinder 25 is operated, and the piston rod 23 is stroked to perform punching. At this time, the dog bracket 41, dog 43, striker 39, punch 35 integrated with the piston rod 23
Each part strokes together.

The positions of the top dead center and the bottom dead center of the punch 35 are controlled by detection signals of the proximity switches 47, 49 and 51. More specifically, the detection side of the top dead center and bottom dead center positions is shown in FIG.
5 to FIG. The direction indicated by the arrow in each figure indicates the direction of operation of the dog 43 at the time of detection.

FIG. 2 shows the position of the top dead center of the punch 35 when processing a very thick object. That is, the dog 43 rises,
The first detection surface 43A formed on the dog 43 is detected by the first proximity sensor 47, and the dog 43 further rises and the second detection surface 4A.
When 3B is detected by the first proximity sensor 47, the dog 4
3 stops. Therefore, the first proximity sensor 47
The punch 35 stops at N-OFF-ON.

FIG. 3 shows the position of the top dead center of the punch 35 when processing a thick material. That is, the dog 43 rises, and the first detection surface 43A formed on the dog 43 is
9, the dog 43 is further raised and the second detection surface 43
When B is detected by the second proximity sensor 49, the dog 43
Stops. Therefore, the second proximity sensor 49 is turned on.
With -OFF-ON, the punch 35 stops.

FIG. 4 shows the position of the top dead center of the punch 35 when processing a thin material. That is, the dog 43 rises, and the first detection surface 43A formed on the dog 43 is
7 is detected, the dog 43 stops. Therefore, when the first proximity sensor 47 is ON, the punch 35 stops.

FIG. 5 shows the position of the bottom dead center of the punch 35. That is, when the dog 43 descends and the second detection surface 43B formed on the dog 43 is detected by the proximity switch 51 as the bottom dead center sensor, the dog 43 stops. Therefore, when the proximity switch 51 is ON, the punch 35 stops.

As described above, as in the case of detecting the top dead center position of the punch 35 shown in FIG. 2 when processing a very thick object and the case of detecting the top dead center position of the punch 35 shown in FIG. Two different stop positions are determined by the detection signal of the same first proximity sensor 47.

The top dead center position of the punch 35 can be set in a plurality of stages. Which top dead center position is to be used is determined based on input data of the control device 19, and is determined according to the thickness of the section steel. The drilling can be performed by automatically selecting and setting the optimum stroke, and the processing speed is increased by the amount of no waste of movement, and the processing tact time can be shortened.

FIG. 6 shows the flange portion W of the lip channel steel W.
An exclusive shaped steel working machine for performing drilling in F is shown.

That is, since the lip channel steel W has a small thickness, the top dead center position of the punch 35 is shorter than that in the case where the thickness is large, resulting in a short stroke. For this reason, the punch holder 5 supporting the punch 35 by an amount corresponding to the shortened stroke.
The thickness of the A dimension of No. 3 can be increased from the thickness of the conventional B dimension. Thus, the processing ability can be increased.

The present invention is not limited to the above-described embodiment of the present invention, but can be embodied in other forms by making appropriate changes. For example, the dog 43 and the proximity sensors 47, 49, and 51 are employed as detecting means for detecting the top dead center and the bottom dead center of the punch 35, but a method combining a rack, a pinion, and an encoder, a magnet scale, and a differential transformer Etc. may be used. Instead of input data being input to the control device 19 for control, the thickness of the section steel may be detected by the detecting means, and the top dead center position of the punch 35 may be determined based on the detected value.

[0041]

As will be understood from the above description of the embodiment of the present invention, according to the present invention according to the first aspect, a means for detecting an optimum top dead center position with respect to a punch from work thickness data. Can be automatically set, the machining speed is increased by the amount of no waste of movement, the machining tact time can be shortened, and the possible machining range can be expanded.

According to the second aspect of the present invention,
The top dead center position of the punch is detected by a detection member provided with a plurality of detection units in a driving member for moving the punch and a plurality of detection members provided on the fixed side. For this reason, the top dead center position of the punch can be set to an optimum position depending on the thickness of the work.

Further, according to the third aspect of the present invention,
By operating the detection member having the first detection surface and the second detection surface, the bottom dead center of the punch and the plurality of top dead centers of the punch can be set by the plurality of detection members.

Therefore, there is no waste of movement, the machining speed is increased, and the machining tact time can be shortened.

[Brief description of the drawings]

FIG. 1 is a front view of a section steel processing machine, showing a main part of the present invention.

FIG. 2 is an operation explanatory view.

FIG. 3 is an operation explanatory view.

FIG. 4 is an operation explanatory view.

FIG. 5 is an operation explanatory view.

FIG. 6 is an explanatory diagram comparing a conventional lip-shaped steel groove at the time of machining.

FIG. 7 is a plan view showing an overall arrangement of a section steel working machine and a material feeding device according to an embodiment of the present invention.

FIG. 8 is a side view of FIG.

FIG. 9 is an enlarged front view taken in the direction of the arrow IX in FIG. 8;

FIG. 10 is an explanatory diagram of an operation at the time of processing a thin plate in a conventional example.

FIG. 11 is an explanatory diagram of an operation at the time of processing a thick plate in a conventional example.

FIG. 12 is an explanatory view of an operation at the time of machining a lip channel steel in a conventional example.

FIG. 13 is an explanatory view of an operation at the time of machining a lip channel steel in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Section steel processing machine 25 Fluid pressure cylinder (drive member) 31 Die 35 Punch 43 Dog (detection member) 43A 1st detection surface 43B 2nd detection surface 47 1st proximity sensor (detection member) 49 2nd proximity sensor (detection member) ) 51 Proximity sensor (detection member)

Claims (3)

[Claims] 1. A section machine for processing a workpiece by cooperation of a punch and a die, wherein a detecting means for detecting a position of the punch for setting a top dead center position of the punch based on a thickness of the workpiece. Shaped steel processing machine characterized by comprising: 2. A detecting member comprising: a plurality of detecting portions provided on a driving member for moving the punch; a plurality of detecting members provided on a fixed side for detecting a movement of the detecting member; 2. The method according to claim 1, wherein
The shaped steel processing machine described. 3. The detecting member comprises a detecting member for detecting a bottom dead center of a punch and a plurality of detecting members for detecting a plurality of top dead centers of the punch, wherein the detecting member is a detecting member. And a second detection surface for detecting the bottom dead center of the punch and the top dead center of the punch at a position separated from the first detection surface. The section steel processing machine according to claim 2, wherein: