JPH054890Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a deflection correction device for a press brake.

BACKGROUND TECHNOLOGY Generally, in a press brake, as shown in FIG.
0 is fixed to the frame 11 at both ends, and rams 12 to which the upper die is attached via attachment members 15 are operated by receiving forces from hydraulic cylinders 13 near both ends. Therefore,
When the ram 13 descends and bends a metal plate, the table 10 is slightly bent at d near the center.
The ram 12 curves downward as shown by 1, and the ram 12 curves upward at the center as shown by d2. As a result, the metal plate cannot be bent completely. In order to correct the deflection that occurs in the table 10 and the ram 12, the table 1 is
Another type of fixed contact member having an inclined surface inclined in the front-rear direction and fixed to either the ram 12 or the ram 12 and in contact with the inclined surface having the same inclination as the inclined surface of the fixed contact member. The table 10 has a movable contact member arranged so as to be movable forward and backward.
The correction is made by the sum of the deflection of the ram 12 and the deflection of the ram 12. However, this correction has the disadvantage that it requires labor and time to adjust the movable contact members by moving them forward and backward when the magnitude of the load differs.

In order to solve these problems, the creator of this device made a proposal as shown in Japanese Utility Model Publication No. 16423/1983. This device is placed at a predetermined position on either the main body member consisting of a ram or table and the mounting member to which the mold is attached, and is tilted so that it rises only in the same direction, left and right, and this tilt is in the center. A plurality of fixing members forming a fixed contact surface that increases in size as the size increases, and a plurality of fixing members each slidingly contacting the fixed contact surface and fixing the fixing members of the main body member and the mounting member. The same number of sliding members as the fixed members that can be slid in the left-right direction with respect to the side members are provided, and a shaft member is provided with screws extending laterally through each of the sliding members. The member is adjusted by moving the member in the left and right direction at one end, and the position in the left and right direction of each sliding member is adjusted by a female screw member screwed into the shaft member on both sides. However, there was a problem in that even if the arrangement of the sliding member was adjusted by rotating the female screw member, it was not possible to understand how much the adjustment was made.

Also, as shown in Figure 9, 10μ (micron) is applied to the mold.
If the above local wear or deformation e occurs, it is necessary to make a correction, or if there is a portion where the thickness of the material locally differs by 10 μm or more, it is necessary to make a local correction. Also, as shown in Figure 8, the deflection curve necessary for correction, for example in the case of uniformly distributed load, is a
In the case of an aluminum plate shown in , a steel plate shown in b, or a stainless steel plate shown in c, the difference is different. For example, if aluminum plate is used as a standard, steel plate and stainless steel plate only need to be slightly corrected, but It was difficult to adjust the appropriate amount. Therefore, it was necessary to use the same mold, or to prepare molds for each material.

Problems to be Solved by the Invention This invention provides a place brake deflection correction device that allows local correction of the deflection curve to be extremely easily performed in a device that can be easily operated so as to obtain a reference deflection curve. It is something.

Means for Solving the Problem Means for Solving the Problem This invention is arranged at predetermined positions in the left and right direction between the main body member consisting of a ram or table and the mounting member for attaching the mold, and three or more fixing members each forming a fixing contact surface that is inclined upwardly, the inclination becoming larger as it approaches the central portion, and whose opposing surfaces are horizontal; A movable member that is slidable in the left and right directions with respect to the main body member or the mounting member on the side of the fixed contact surface of the fixed member and extends long from side to side, and a movable member that has the same slope so as to overlap the fixed contact surface of each of the fixed members. The movable member is moved in the left-right direction by providing a sliding contact surface that contacts the movable member and screwing the same number of sliding members as the fixed members fixed to the movable member and a shaft member fixed to one end of the movable member. and an adjustment device for moving the movable member, which is fixed to the main body member or the mounting member on the opposite side from which the movable member slides and has a contact surface that is inclined in the front-rear direction and is substantially the same in the left-right direction as the fixed member. fixed wedge members arranged in the same number at different positions, each having a similarly inclined contact surface that overlaps and contacts the contact surface of each of the fixed wedge members, and a horizontal surface opposite to the contact surface of each of the fixed wedge members, respectively. the same number of movable wedge members as the fixed members, which are movable in the front-rear direction by contacting a surface facing the fixed contact surface of the fixed contact surface of The present invention provides a press brake deflection correction device characterized by including the same number of adjustment screws and scales for reading the adjustment amount of each adjustment screw.

Embodiment An embodiment of this invention will be described below with reference to the drawings.

In one embodiment of the invention shown in FIGS. 1 to 6, numeral 12 is a ram extending in the transverse direction and serving as the main member, and numeral 15 is a ram fixed to the ram at both left and right ends by means not shown. This is a mounting member called a punch holder to which a blank upper die can be mounted directly or indirectly. This mounting member has a ram 1 at both ends.
There are cases where it is not fixed to 2.

In the lower part of the ram 12, there are for example 4 grooves extending laterally at a small distance from each other, for example at the front and at the rear.
Each substantially plate-shaped connecting member 16 is fixed with bolts 18. A mounting member 15 is connected to the lower part between the connecting members 16 by bolts 20. This bolt 20 has a hole 21 in the mounting member 15 that has a larger diameter than this bolt or is longer in the vertical direction.
, the mounting member 15 is able to move slightly in the vertical direction at this portion. 22
24 is a plurality of sets of short vertical length connecting members fixed by bolts 23 facing each other from the front and back at the lower part of the ram 12 in the space between the connecting members 16 disposed on the left and right; A plurality of bolts 25 are fixed to each other and extend downward from the lower surface of the connecting member 22 with a slight gap 26 therebetween, facing the mounting member 15 in the front and rear, respectively, and are fixed by bolts 27, with the bolts 24 passing through them. These are a plurality of sets of connecting members that receive the elastic force of a helical spring 28 wound around a lever bolt 24 in an upward direction. Therefore, the mounting member 15 has a plurality of springs 2
8, the lower end surface of the ram 12 and the upper end surface of the mounting member 15 are surrounded by connecting members 16 and 25 arranged alternately. A laterally long space 31 is formed in the portion.

Reference numeral 32 denotes, for example, three or more fixing wedge members that are distributed over the entire upper end surface of the mounting member 15 in the space 31 and fixed with screws, and the upper surface is inclined so that it becomes higher toward the rear. It has a contact surface 33, and both front and rear surfaces are in contact with the respective connecting members 16.
Reference numeral 35 denotes a plurality of movable wedge members having contact surfaces 36 which are arranged to overlap each fixed wedge member and whose lower surfaces are inclined in the same direction so as to contact the contact surface 33, and whose upper surfaces are horizontal. , the length in the front-rear direction is shorter than the interval between the connecting members 16.
Reference numeral 37 denotes an adjustment screw which is screwed through the front connecting member 16 so as to move the movable wedge member back and forth in the front-back direction. The applied scale member 40 is fixed. On this scale 41, one scale corresponds to the amount by which the upper surface of the movable wedge member 35 is raised by 10 microns by rotating the adjustment screw 37. Reference numeral 42 denotes a collar member fixed to the left and right sides of each movable wedge member 35, and extends vertically, and the downwardly extending portion is attached to the fixed wedge member 32.
The movable wedge member 35 is contacted with both left and right ends of the movable wedge member 35 to prevent it from moving in the left-right direction. 43
have horizontal lower surfaces overlapping the upper surface of the movable wedge member 35, and both front and rear ends thereof are connected to the connecting member 16.
It is a fixed member arranged so as to be in contact with the flange member 42, and its left and right ends are in contact with the collar member 42 so that it does not move, and its upper surface forms a fixed contact surface 45 that is sloped to become higher toward the right side. , this slope is larger near the center than near both ends. Reference numeral 46 denotes a sliding member having a sliding contact surface 47 on its lower surface that contacts the fixed contact surface 45 at the same slope, and whose upper surface can slide laterally along the lower surface of the ram 12 in the space 31. It is fixed to a movable member 48 which extends in length by screws. 50 is a shaft member fixed to the right end of the movable member 48, and has a screw 51 cut therein. Each sliding member 4
6, the movable member 48, and the shaft member 50 constitute a sliding body 52. 53 is a handle serving as an adjustment device, and has a hollow shaft 56 rotatably supported by a bearing device 55 provided at the right end of the ram 12;
A female thread 57 is cut into the inner end surface of this hollow shaft and is screwed into the thread 51 of the shaft member 50. 58
A scale member is fixed to the end of the shaft member 50 with a bolt 60 and passes through the hollow shaft 56, and a scale 61 is carved near the outer end.

In the configuration as described above, with the mold attached to the mounting member 15, the handle 53 and adjustment screw 37 are loosened to the maximum, and the mounting member 15, which is pulled upward by the spring 28, is horizontal, and In this state, the fixed contact surface 4 of the fixed member 43
5 and the sliding contact surface 47 of the sliding member 46 are adapted to contact each other without exerting force.
From this state, rotate the handle 53 to remove the slider 52.
When the mounting member 15 and the mold are tightened so as to move to the right, the mounting member 15 and the mold will be deformed and curved, being larger at the center and smaller toward both ends, moving downward. The distribution of curvature of the mounting member 15 and the mold is, for example, a curve in the case of an aluminum plate as shown by a in FIG. 8. The scale 61 of the scale member 58 is carved, for example, in the center by 0.1 mm, with each scale representing an amount of curvature protruding downward from both ends. Therefore, the handle 53 should be adjusted by the amount by which the central portion protrudes downward so that the deflection of the ram 12 and the table 10 due to the load acting on the mounting member 15 is equal to the total value. When processing a stainless steel plate or when it is necessary to locally change the deflection shape, operate the adjustment screw 37 and adjust the movable wedge member 35 to the required length while reading the scale 41 of the scale member 40. good.

Various modifications can be made to this invention. For example, the movable member 48 may be slidably provided with respect to the mounting member 15 and the fixed wedge member 32 may be fixed with respect to the ram 12. Further, the above-described device may not be provided between the ram 12 and the mounting member 15, but may be provided between the table 10 as the main member and the mounting member 14 to which the lower die is mounted.
Furthermore, a recess with a semicircular cross section extending in the front-rear direction is formed on the upper surface of the fixing member 43 without inclining the upper surface, and the fixing member 43 is rotatably supported in the recess and has one surface in contact with the sliding contact surface 47. A semi-cylindrical member may be provided as a contact surface. In addition, a member corresponding to the scale member 40 indicating the reference position is provided, and the adjustment screw 3
A scale indicating the adjustment of 7 may be displayed on the connecting member 16.

Effects of the invention Since this invention is structured as described above,
Most of the correction amount can be quickly adjusted by operating the adjustment device such as the handle 53, and the adjustment screw 3
7 and make very easy fine adjustments to the mounting member 1.
This has the effect of making it possible to form a desired deflection such as 5 or the like. Therefore, there is an advantage that one mold can be used commonly for aluminum plates, steel plates, stainless steel plates, etc.

[Brief explanation of drawings]

Fig. 1 is an enlarged sectional view taken along the line A-A in Fig. 2 showing an embodiment of this invention, Fig. 2 is a front view with one half cut away and a portion removed, and Fig. 3.
The figure is an enlarged cross-sectional view taken along line B-B in Figure 2, Figure 4 is an enlarged cross-sectional view taken along CC in Figure 2, Figure 5 is a partially exploded perspective view, and Figure 6 is a cross-sectional view of the handle. The front view, FIGS. 7 and 8 are explanatory diagrams of the deflection distribution, and FIG. 9 is a front view showing the deformation of the mold. 10 is a table, 12 is a ram, 14 is a mounting member, 15 is a mounting member, 31 is a space, 32 is a fixed wedge member, 33 is a contact surface, 35 is a movable wedge member, 36 is a contact surface, 37 is an adjustment screw, 40 is a scale member, 41 is a scale, 43 is a fixed member, 45 is a fixed contact surface, 46 is a sliding member, 47 is a sliding contact surface, 4
8 is a movable member, 50 is a shaft member, 51 is a screw, 53
is an adjustment device, 57 is a female thread, and 61 is a scale.

Claims (1)

[Scope of utility model registration request] The main member consisting of a ram or table and the mounting member to which the mold is attached are arranged at predetermined positions in the left and right direction, respectively, and are inclined so as to rise only in the same left and right direction, and this inclination is at the center. Therefore, three or more fixing members that form large fixed contact surfaces and have horizontal facing surfaces, and a fixed contact surface of each of these fixing members in the left and right direction with respect to the main member or the mounting member. a movable member that is slidable and extends long from side to side; and a fixed member that is fixed to the movable member and has a sliding contact surface that overlaps and contacts the fixed contact surfaces of each of the fixed members at the same slope. The device has the same number of sliding members as the movable members, and an adjustment device that is screwed onto a shaft member fixed to one end of the movable member to move the movable member in the left-right direction. Contact between each fixed wedge member and each fixed wedge member, which is fixed to the main body member or mounting member on the opposite side and has a contact surface inclined in the front-rear direction, and which is arranged in the same number and at substantially the same position in the left-right direction as the fixed member. It has a similarly inclined contact surface that overlaps and contacts the surface, and a horizontal surface opposite to this contact surface contacts the surface opposite to the fixed contact surface of each of the fixed members, so that it can be moved in the front and rear direction. The same number of movable wedge members as the fixed members, the same number of adjustment screws as the fixed members for moving each of the movable wedge members forward and backward, and a scale for reading the adjustment amount of each of the adjustment screws. A press brake deflection correction device comprising: