JP3765738B2 - Resistance material manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a resistance material (element) made of a thin metal material used in a load test or the like.
[0002]
[Prior art]
In power load testing machines, etc., a resistor used as a load is used. For such a resistor, there are alternately cuts (1-2 mm, also called slits) from both sides of the side facing the rectangular thin plate material. A lot of long resistance materials that are zigzag shaped as a whole.
Conventionally, this resistance material has been manufactured by press working (for example, a turret punch press).
[0003]
[Problems to be solved by the invention]
However, in the press working, there is a problem that it takes time because punching is performed for each thin plate material.
Further, the thin plate material is usually made of a hard material such as stainless steel, and there is a problem that the mold is consumed very much and the cost is increased.
The present invention has been made in view of such circumstances, and an object thereof is to provide a method of manufacturing a resistance material that can be processed in a short time and can be manufactured at low cost.
[0004]
[Means for Solving the Problems]
The method for manufacturing a resistance material according to the first aspect of the present invention is formed in a zigzag shape by alternately cutting a predetermined length of a metal rectangular plate material at predetermined intervals from opposite sides of the rectangular plate material. A method of manufacturing a resistance material, in which a plurality of the rectangular plate members are stacked to form a laminate, and a metal plate member having sufficient strength is formed on the upper and lower sides and at least two opposite side portions of the laminate. The laminated body made of a plurality of the rectangular plate members surrounded by the block is formed with the block by the saw with the block.
[0005]
Moreover, the manufacturing method of the resistance material which concerns on 2nd invention is the manufacturing method which concerns on 1st invention. WHEREIN: The said metal board | plate material is provided in the four sides of the said laminated body.
The resistance material manufacturing method according to a third invention is the manufacturing method according to the first and second inventions, wherein the laminated rectangular plate material is pre-pressurized with the metal plate materials arranged above and below the laminated body. The metal plate material on the side is fixed in a state where the rectangular plate material constituting the structure is in close contact.
And the manufacturing method of the resistance material which concerns on 4th invention is the manufacturing method which concerns on 1st-3rd invention, The said saw machine is a band saw, The said metal board | plate material consists of an iron plate, The said is carried out by welding. Blocks are formed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
FIG. 1 is a plan view of a resistance material manufactured by the resistance material manufacturing method according to an embodiment of the present invention, FIG. 2 is a side view showing one step of the manufacturing method, and FIG. 3 is the manufacturing method. FIG. 4 is a plan view showing one process of the manufacturing method.
[0007]
As shown in FIG. 1, a resistance material 10 manufactured by a resistance material manufacturing method according to an embodiment of the present invention is, for example, a metal having a width b of 270 mm, a length a of 300 mm, and a thickness of 0.5 mm A stainless steel plate 15 (see FIG. 2), which is an example of the rectangular plate material, is used, and cuts 11 having a length of 283 mm are alternately inserted from opposing sides 12 and 13 into a zigzag shape. The width c of the cut line 11 is 2 mm, and the width d of the band-shaped portion 14 formed by the adjacent cut lines 11 is 14 mm.
[0008]
When this resistance material 10 is manufactured, first, as shown in FIG. 2, a predetermined number (100 in this embodiment) of thin stainless steel plates 15 having a thickness of 0.5 mm, a width of 270 mm, and a length of 300 mm are prepared. Then, in a state where a steel (iron plate) ceiling plate 16 and a bottom plate 17 having a thickness of 9 mm, which is an example of a metal plate material having the same width and length, are arranged on the top and bottom, pressurization is performed from above with a press or the like. . Thereby, the stainless steel plate 15 forms a laminated body 18 in a close contact state. The applied pressure in this case is preferably about 100 kg to 300 kg, but may be smaller or larger.
In this state, as shown in FIG. 3, side plates 19 to 22 made of four metal plates (iron plates) are arranged on the side portion of the laminated body 18, and upper and lower ends thereof are welded to the ceiling plate 16 and the bottom plate 17. At the same time, the end portions of the adjacent side plates 19 to 22 are also welded. As a result, a block 23 composed of the ceiling plate 16, the bottom plate 17, and the side plates 19 to 22 is formed, and the periphery of the laminate 18 is surrounded by the block 23.
[0009]
After the welding of the side plates 19 to 22 is completed, the pressure state is released, and the block 23 containing the laminated body 18 is placed on a band saw that is an example of a sawing machine, and is clamped by a clamp mechanism provided on the band saw itself. As shown in FIG. 4, it arrange | positions so that the width direction of each stainless steel plate 15 which comprises the laminated body 18 may be orthogonal to the cutting direction of a band saw. Here, the blade width of the band saw is about 2 mm. Then, in FIG. 4, a band saw is inserted at a position of 23 mm including the thickness of the side plate of 9 mm from the left, and a cut 11a having a length of 292 mm is formed. Such cuts 11a are sequentially formed at a pitch of 30 mm to form a total of eight cuts 11a.
[0010]
Next, the clamp mechanism is released, the block 23 is turned upside down and placed at the same position, and is fixed at a predetermined position of the band saw by the clamp mechanism.
In this state, a cut 11b having a depth of 292 mm is made at a position 23 mm from the end, and thereafter the same cut 11b is sequentially formed at a pitch of 30 mm. Note that the cut lines 11a and 11b are formed by applying a predetermined feed to the processing table to which the block 23 is fixed.
In addition, when the resistance material 10 requires strict dimensions, the processing of the stainless plate 15 is accurately performed, and the ceiling plate 16, the bottom plate 17, and the side plates 19 to 22 are also accurate in thickness. .
[0011]
Next, if the laminated body 18 is taken out by removing the welded portions of the ceiling plate 16, the bottom plate 17, and the side plates 19 to 22 and divided into the respective stainless steel plates 15, the resistance material 10 as shown in FIG. . In addition, when removing each welding part, you may cut | disconnect a welding part using a band saw.
[0012]
In this embodiment, the dimensions are specified and described. However, the present invention is not limited to the above dimensions, and can be freely changed as necessary.
Moreover, although the thickness of the ceiling plate, the bottom plate, and each side plate is 9 mm in this embodiment, it is preferably 2/3 or more of the band-like portion 14 (14 mm in this embodiment) of the resistance material 10. In addition, if it is too thick, extra energy is required for cutting the band saw.
Furthermore, in this embodiment, a stainless steel plate is used as the rectangular plate material, but it is a matter of course that the present invention can be applied to other plate materials (for example, steel plates, electric resistance materials).
Moreover, in the said embodiment, although the side plate was arrange | positioned around the laminated body, if a thick board is used, a side plate can also be arrange | positioned only to two opposing side parts.
[0013]
【The invention's effect】
In the method of manufacturing a resistance material according to claims 1 to 4, a plurality of rectangular plate members are stacked to form a laminate, and a metal plate member having sufficient strength is formed on the upper and lower sides and at least two opposite side portions of the laminate. Since the laminated body made up of a plurality of rectangular plate members surrounded by the block and surrounded by the blocks was cut with the block by a saw machine, the manufacturing became extremely easy and the resistance material could be manufactured at low cost.
In particular, in the method of manufacturing a resistance material according to claim 2, since the metal plate material is provided on the four sides of the laminated body, the block can hold the laminated body more firmly and has better dimensional accuracy. Resistive material can be manufactured.
[0014]
In the method of manufacturing a resistance material according to claim 3, the laminated rectangular plates are formed by pressing the metal plates arranged above and below in advance so that the rectangular plates constituting the laminate are in close contact with each other. Since the plate-making material is fixed, the rectangular plate material comes into close contact with each other, and vibrations during cutting by the saw machine are eliminated.
In the method of manufacturing a resistance material according to claim 4, since the saw is a band saw, the metal plate is made of an iron plate, and the block is formed by welding, the resistance material can be manufactured at a lower cost. .
[Brief description of the drawings]
FIG. 1 is a plan view of a resistance material manufactured by a resistance material manufacturing method according to an embodiment of the present invention.
FIG. 2 is a side view showing one step of the manufacturing method.
FIG. 3 is a plan view showing a step in the manufacturing method.
FIG. 4 is a plan view showing a step in the manufacturing method.
[Explanation of symbols]
10: Resistance material, 11, 11a, 11b: Cut, 12, 13: Side, 14: Strip, 15: Stainless steel plate, 16: Ceiling plate, 17: Bottom plate, 18: Laminate, 19-22: Side plate, 23 :block

Claims (4)

It is a method of manufacturing a resistance material formed in a zigzag shape by cutting a predetermined length at predetermined intervals alternately from opposite sides of the rectangular plate material to a metal rectangular plate material,
A plurality of the rectangular plate members are stacked to form a laminated body, and the upper and lower sides and at least two opposing side portions of the laminated body are surrounded by a block in which metal plates having sufficient strength are integrated, and a plurality of the rectangular plates are surrounded by the blocks. A method for producing a resistance material, comprising forming the cuts of the laminated body made of the rectangular plate material together with the blocks with a saw. 2. The method of manufacturing a resistance material according to claim 1, wherein the block is provided with the metal plate material on four side portions of the laminated body. 3. The resistance material manufacturing method according to claim 1, wherein the stacked rectangular plate member is in a state in which the metal plate member disposed above and below is pressed in advance so that the rectangular plate member constituting the stacked body is brought into close contact therewith. A method of manufacturing a resistance material, wherein the metal plate material on the side portion is fixed. The resistance material manufacturing method according to any one of claims 1 to 3, wherein the saw is a band saw, the metal plate is made of an iron plate, and the block is formed by welding. A method for producing a resistance material.

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