JP2018183859A - Method for forming narrow groove to metal plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for forming a narrow groove to a metal by which prescribed narrow grooves can be easily formed on a metal at predetermined intervals, and further, it is possible that any fine cut piece is not generated when forming a narrow groove.SOLUTION: A formation method for forming narrow grooves of plural rows on one surface of a metal 1, according to which a fin formation process, in which a digging tool 5, at a tip of which in a movement direction a cutting part 5a is formed, is dug in a direction of the other surface in a state of having a prescribed angle, thereby so integrally forming a tabular fin 6 as to stand, is sequentially repeated at a predetermined interval, and after a digging process in which plural fins 6 with the other surface side of the metal 1 as a base end are formed, fin cutting process, in which the fins 6 of plural rows are divided for each prescribed dimension and are cut to one surface in the state that a cutting tool 7 has a prescribed angle from a direction in which the cutting part 7a at a tip thereof is orthogonal to surfaces of the fins 6 of plural rows, is sequentially repeated, the fin 6 is so cut as to have a surface same as one surface of the metal 1, and narrow grooves 2 of plural rows having a prescribed depth are formed between said fin and an adjacent fin 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fine groove forming method for forming fine grooves having a plurality of fine widths and depths on one surface of a metal material.

  In various devices or parts used in the devices, it is required to form narrow grooves having a small width and depth on at least one surface of the metal material. Various methods such as etching, pressing, and cutting have been studied as methods for forming such narrow grooves in a metal material. Etching can form fine grooves with the above dimensions, but requires a long processing time, and is therefore unsuitable for mass production and has a problem of high cost. Further, the press working has a problem that when a fine fine groove is formed on one surface of the metal material, it is deformed due to a large stress applied to the metal material, and it becomes difficult to correct the deformation.

  Japanese Patent No. 4596235 (Patent Document 1) discloses a fine groove forming method for forming a plurality of fine fine grooves to solve this problem, and fins are formed while being spaced apart by a digging tool at a minute interval. The steps are sequentially repeated to form a plurality of fins, and then the tops of the plurality of fins are cut with a cutting tool such as a cutter to form the upper end surfaces of the plurality of fins flatly. A method of forming a plurality of narrow grooves is disclosed.

Japanese Patent No. 4596235

  The method of forming the narrow groove disclosed in Patent Document 1 has a predetermined width and depth between the fins by sequentially and repeatedly using a digging tool on one surface of a metal material. A plurality of narrow grooves can be formed. However, when the top portions of the plurality of fins are cut with a cutting tool such as a cutter, chips and cutting powder are generated. Since the chips and cutting powder are relatively fine, they often enter the narrow groove. Since the narrow groove is fine, there is a problem that it cannot be taken out because chips and cutting powder once entered are sandwiched inside. If even a small amount of chips or cutting powder enters the inside of the narrow groove, it will lose its function as a narrow groove, so the metal material itself with the narrow groove will become a defective product and must be discarded. It becomes a problem.

  The problem to be solved by the present invention is that a predetermined fine groove can be easily formed at a predetermined interval in a metal material, and that a fine cutting piece is not generated when the fine groove is formed. It is an object of the present invention to provide a method for forming a narrow groove in a metal material that can be used.

  In order to solve the above-mentioned problem, the invention described in claim 1 is a forming method for forming a plurality of narrow grooves on one surface of a metal material, wherein a digging tool having a blade portion formed at a tip in a moving direction is provided. A plurality of fins that are dug down in the direction of the other surface in a state having a predetermined angle to form plate-like fins so as to stand up together are sequentially repeated while being spaced apart by a predetermined distance, so that the other surface side of the metal plate is a base end. After the digging process of forming a single fin, the plurality of fins are arranged at predetermined dimensions with the cutting tool having a predetermined angle from the direction in which the cutting edge at the tip is perpendicular to the surfaces of the fins. The fin cutting process of dividing into one side and cutting to one side is sequentially repeated, the fin is cut so that it is flush with the one side of the metal material, and a plurality of strips having a predetermined depth are provided between the adjacent fins. The idea of forming narrow grooves To have.

  In the invention according to claim 2, the width of the digging tool is formed to be smaller than the width of the metal material, and the metal material and the digging tool have a predetermined angle from one end side of the metal material. The digging tool is inserted into a predetermined position, and a plurality of small fins whose base portions are connected to the metal material are sequentially formed, and then the digging tool is placed on the other side with a predetermined angle. After forming the plurality of fins to a predetermined position spaced apart from the other end side of the metal material by sequentially repeating a fin forming step of digging in the direction and integrally standing up plate-like fins while being spaced apart by a predetermined distance And a fin cutting process is sequentially repeated to form a plurality of narrow grooves having a predetermined depth between adjacent fins, and to form a flange surrounding the plurality of narrow grooves around the metal material. Toi .

  According to the present invention, when forming a narrow groove on one side of a metal material, the digging tool continuously digs up one side of the metal material at a predetermined pitch to form a plurality of fins and narrow grooves. By setting the digging pitch at a predetermined interval, the narrow groove can be easily formed. In addition, since one side of the metal material is dug up and dug up with a tool, it is possible to form a narrow groove without generating a cutting piece. Further, since the plurality of fins are divided and cut in predetermined dimensions from the direction orthogonal to the cutting tool, narrow grooves having a predetermined depth are easily formed on one side of the metal material. It becomes possible. In addition, since the plurality of fins are cut from the direction orthogonal to each other by the fin cutting process, the stress applied to the fins can be reduced, and the fins are not deformed, so that the interval between the narrow grooves can be formed constant. . Moreover, when cutting a plurality of fins, the chips become almost thread-like and escape above the cutting edge at the tip of the cutting tool, so that it is possible to prevent the chips from entering the narrow groove. .

  According to the invention described in claim 2, the fin forming step of digging up one side of the metal material and integrally standing up the plate-like fins with a digging tool having a width smaller than the width of the metal material is repeated. By forming a plurality of fins having a predetermined interval, a flange portion surrounding the plurality of fins can be formed around the metal material. Furthermore, by cutting a plurality of fins formed on the inner side of the metal material from a direction orthogonal to the fin cutting process, a plurality of narrow grooves surrounded by a flange around the metal material can be formed. . Since the plurality of narrow grooves formed in this way are protected by the surrounding flanges, it is possible to prevent damage caused by external pressure applied from the side.

  It is a perspective view which shows the metal plate in which the fine groove was formed by the formation method of this invention.   It is sectional drawing of the metal plate in which the fine groove was formed.   It is a perspective view which shows the state which forms a fin in a metal plate.   (A) thru | or (F) is process explanatory drawing which shows the formation process of a fin.   It is sectional drawing which shows the state which formed the fin in the metal plate.   It is sectional drawing which shows the state which formed the fin in the metal plate in which the collar part was formed.   It is a perspective view which shows the state which cuts a fin with a cutting tool.   (A) thru | or (F) is process explanatory drawing which shows a fin cutting process.

  A forming method for forming a plurality of narrow grooves on one surface of a metal material is a plate-like fin formed by digging a digging tool having a blade formed at the tip in the moving direction in the direction of the other surface with a predetermined angle. After the digging and raising step of forming a plurality of fins having the other surface side of the metal plate as a base end, the fin forming step for integrally standing and forming the plurality of fins with the other side of the metal plate as a base end is sequentially repeated. A fin cutting step of dividing a plurality of fins into predetermined dimensions and cutting to one surface in a state where the cutting tool has a predetermined angle from a direction perpendicular to the surface of the fins of the fins is sequentially repeated. Are cut to be flush with the one surface of the metal material, and a plurality of narrow grooves having a predetermined depth are formed between the adjacent fins.

  Hereinafter, a method for forming a narrow groove in a metal material according to the present invention will be described in detail with reference to the drawings. FIG. 1 and FIG. 2 show an example of a metal material in which a plurality of narrow grooves are formed inward of a collar portion formed around the metal material by the forming method according to the present invention. The metal material 1 can be cut, has a predetermined viscosity, and has characteristics necessary for parts and products using the metal material 1 having a narrow groove, such as iron, stainless steel, aluminum, copper, Or the like, or an alloy containing these metals as a main component. The metal material 1 shown in FIG. 1 is a metal plate having a predetermined plate thickness and having one surface formed flat. In the examples described below, the metal plate is described as the metal material 1.

  The plurality of narrow grooves 2 formed on the one surface side of the metal material 1 are formed at equal intervals with a predetermined width and depth and a predetermined pitch. The narrow grooves 2 are partitioned by partition walls 3 made of fins to be described later. And the top part of the partition 3 is formed so that it may form in the same plane as the plane of the collar part 4 of the metal material 1 surrounding the multiple groove | channel 2 as shown in FIG. Incidentally, the width and depth of the narrow grooves 2 are each 0.1 mm to several mm, and the interval between the narrow grooves 2 is 0.05 mm to several mm. The width, depth and interval of the narrow groove 2 can be arbitrarily set by a forming method described later.

  Next, in the method for forming a narrow groove in a metal material, a fin forming step for integrally standing up plate-like fins will be described. As the metal material 1 forming the narrow groove 2, a copper alloy, stainless steel, aluminum, or the like is selected. The metal material 1 has a necessary plate thickness and width and is placed on a device (not shown). Thereafter, as shown in FIG. 4, the small fins 6 a and the fins 6 are formed upright by the digging tool 5.

  The digging tool 5 has a blade portion 5a perpendicular to the moving direction at the tip on the bottom side, and the width thereof is set to be smaller than the width of the metal material 1. Further, the digging tool 5 is attached to a driving device (not shown) by being inclined at a predetermined angle θ so that the rear end side becomes higher with respect to one surface of the metal material 1. The inclination angle θ is appropriately set depending on the height of the fins 6, the plate thickness, the material of the metal material 1, and the like, but is generally set to 5 degrees to 20 degrees. Both sides in the width direction of the digging tool 5 are formed substantially at right angles.

  First, as shown by a two-dot chain line in FIG. 4 (A), after the blade portion 5a of the digging tool 5 is brought into contact with a predetermined position on one surface separated from the one end side 1a of the metal material 1, the digging tool 5 is placed. Is inserted into the metal material 1 in the direction of the arrow at a predetermined angle θ by the driving device, the blade portion 5a of the digging tool 5 bites into one surface of the metal material 1, as shown by a solid line in FIG. A small fin 6a having a low height and a thin wall is formed upright. At this time, it is desirable that the pressure at which the digging tool 5 is inserted into the metal material 1 is set so as not to deform or stress the metal material 1. For this reason, since the depth d1 into which the digging tool 5 is inserted is shallow, the height of the small fin 6a becomes low. Then, by forming the first small fins 6 a upright, the metal material 1 is formed with a workpiece surface 1 b that is inclined equal to the inclination angle of the digging tool 5.

  Next, as shown in FIG. 4B, the metal material 1 and the digging tool 5 are relatively moved so that the blade portion 5a comes into contact with a position where the digging allowance t on the upstream side of the processing surface 1b is obtained. Let The digging allowance t is set to about 0.1 mm to 3.0 mm. Then, as shown in FIG. 4 (C), the digging tool 5 is moved in the direction of the arrow at a predetermined angle so as to bite to a depth d2, which is deeper than when the first small fin 6a is formed. The second small fins 6a higher than the first small fins 6a are formed upright. Thereafter, the digging tool 5 is moved from the position where the digging allowance t upstream of the processing surface 1b formed by the standing formation of the small fins 6a is obtained, and the small fins 6a formed before that are erected. Then, the upright formation of the higher-sized small fins 6a is repeated. The formation process of such a small fin 6a is terminated when the blade portion 5a reaches a predetermined depth d3 as shown in FIG. 4 (D).

  Thus, after forming the 1st small fin 6a in the predetermined position of one surface spaced apart rather than the one end side 1a of the metal material 1, the several small fin 6a is changed, changing the depth which digs and raises the tool 5 sequentially. When formed sequentially, the height of the plurality of small fins 6a gradually increases, and a virtual inclined surface is formed by the tops of the plurality of small fins 6a.

  Thereafter, the fin formation process is performed following the standing formation of the small fins 6a, and the fins 6 having the same height are formed. That is, as shown in FIG. 4 (E), the blade portion 5a of the digging tool 5 is predetermined from the position where the digging allowance t upstream from the processing surface 1b formed by the small fin 6a formed last is obtained. The fins 6 having a predetermined height are formed upright by moving until reaching the depth d3. Next, as shown in FIG. 4 (F), the excavating tool 5 is moved to a position upstream of the surface 1b to be processed, and the excavating process of moving until the predetermined depth d3 is reached is sequentially repeated. The heat radiating fins 6 are erected at the same angle and the same interval. Then, by forming a plurality of fins 6, as shown in FIG. 5, the metal material 1 is formed with a recess 1c having a thin bottom surface, and as shown in FIG. 6, inner walls 1d are formed on both sides. Is done.

  In this fin formation process, when the fin 6 is erected and formed on the metal material 1 by the digging tool 5, both sides of the fin 6 bulge out in both directions as shown by arrows. For this reason, the base end side of the fin 6 is joined in pressure contact with the inner wall 1d. As a result, even if the plate thickness of the fin 6 is thinned to about 0.05 mm, both sides of the fin 6 are held by the inner wall 1d of the metal material 1, so that the mechanical strength can be increased. Since both sides of the fin 6 are pressed against the inner wall 1d, each narrow groove 2 can be cut off individually.

  On the other hand, on the upstream side of the fin 6 on the side opposite to the small fin 6a, as shown in FIG. 2, an inclined work surface 1b extending from the bottom surface of the recess 1c to one surface of the metal material 1 is left. Yes. The inclined surface that is the surface 1b to be processed can act as a heat radiating surface. Further, a flange 4 having the same plate thickness as that of the metal material 1 is formed behind the surface 1b to be processed.

  Further, on both sides of the plurality of fins 6 formed on the metal material 1, the flange portions 4 having the same plate thickness as the metal material 1 are formed. The flange 4 can be formed by setting the width of the digging tool 5 to be narrower than the width of the metal material 1. As a result, as shown in FIG. 2, the plurality of fins 6 are formed so as to be surrounded by the flange 4.

  Following the fin forming process described above, the fin 6 is cut so as to be flush with the one surface of the metal material 1 by the fin cutting process shown in FIGS. The cutting tool 7 for cutting the fin 6 is substantially the same as the digging tool 5 described above, and a blade portion 7a perpendicular to the moving direction is formed at the tip on the bottom surface side. And it is set to be the same as or slightly larger than the width of the small fin 6a. Further, the cutting tool 7 is attached to a driving device (not shown) by being inclined at a predetermined angle θ so that the rear end side becomes higher with respect to one surface of the metal material 1. This inclination angle θ is set to approximately 5 degrees to 20 degrees.

  First, as shown in FIG. 8 (A), the cutting tool 7 is driven by a driving device after the blade portion 7a of the cutting tool 7 is brought into contact with a position separated from one end side so as to be perpendicular to the surface of the fin 6. Thus, the corners of the fins 6 are cut by moving to the same surface as the one surface of the metal material 1 in the direction of the arrow at a predetermined angle θ.

  Next, the cutting tool 7 is moved to and brought into contact with a position t at which a cutting allowance is obtained as shown in FIG. The cutting allowance is appropriately set depending on the thickness and material of the fin 6, but approximately 0.1 mm to 3.0 mm is preferable. After that, as shown in FIG. 8B, the fin 6 is cut by moving the cutting tool 7 at a predetermined angle θ in the direction of the arrow until it is flush with the one surface of the metal material 1. As a result, chips 8 are generated at one end of the fin 6, so that the cutting tool 7 is moved in the horizontal direction that is flush with one surface of the metal material 1 as shown in FIG. As a result, the chips 8 are excised. Thus, if the fin 6 is cut from the direction orthogonal to the surface, the rigidity of the fin 6 is increased, so that the fin 6 can be cut without being deformed. Moreover, since the fin 6 itself is thin and the stress due to cutting is small, it can be cut smoothly.

  Thereafter, as shown in FIG. 8E, the cutting tool 7 is moved to a position t where the cutting allowance is obtained and brought into contact therewith. The cutting allowance at this time is desirably set to be the same as that in FIG. Then, the fin 6 is cut by moving the cutting tool 7 at a predetermined angle θ in the direction of the arrow until it is flush with the one surface of the metal material 1, and then, similarly to FIG. 8D, cutting is performed. The tool 7 is moved in the horizontal direction which is flush with the one surface of the metal material 1 to cut off the chips 8.

  Thereafter, the steps shown in FIGS. 8B to 8D are repeated, so that the fin 6 is cut so as to be flush with the one surface of the metal material 1. And the fin 6 which remained at the end moves the cutting tool 7 to the horizontal direction used as the same surface as the one surface of the metal material 1, and cuts the chip 8 as shown in FIG.8 (F).

  As shown in FIGS. 1 and 2, the metal material is cut by the fin cutting process as described above until the upper surface of the partition wall 3 formed by each fin 6 is flush with the one surface of the metal material 1. A plurality of narrow grooves 2 partitioned by partition walls 3 formed by fins 6 are formed on one side of 1 at regular intervals with a predetermined width and depth and a predetermined pitch. In the above-described embodiment, the periphery of the plurality of narrow grooves 2 is surrounded by the flange 4 of the metal material 1, and the upper surface of the partition wall 3 is formed on the same plane as the plane of the flange 4 of the metal material 1. Has been.

  In the embodiment described above, the collar portion 4 surrounding the plurality of narrow grooves 2 is formed around the metal material 1. However, when the collar portion 4 is not necessary, the width of the metal material 1 and the plurality of widths The width of the narrow groove 2 of the strip can be made the same. That is, in the fin forming process of standing and integrally forming plate-like fins, the digging tool 5 having the blade portion 5a having the same width as that of the metal material 1 or larger than that is shown in FIG. The plurality of fins 6 are formed upright by the above process. The interval between the fins 6 is set to be the depth and interval of the narrow groove 2. After the fin forming step, cutting is performed until the upper surface of the partition 3 formed by the fins 6 is flush with the one surface of the metal material 1 by the fin cutting step shown in FIG. As a result, a plurality of narrow grooves 2 having the same width as the width of the metal material 1 are formed on one side of the metal material 1. Both sides of the narrow groove 2 formed in this way are opened.

  The present invention described above is not limited to these embodiments and can be variously modified without departing from the present invention. In the embodiment described above, a plurality of narrow grooves are continuously formed at an equal pitch on one surface of the metal material. However, it is possible to form the grooves at unequal intervals, or to form a predetermined number of narrow grooves at a plurality of locations on the metal material. You may make it form partially. In addition to forming the narrow groove in a straight line, the narrow groove may be deformed so as to be formed in an arc shape, S shape, or wave shape having a large curvature radius. Further, the metal material may be a block-shaped metal material in addition to the metal plate.

DESCRIPTION OF SYMBOLS 1 Metal material 1a One end side 1b Work surface 2 Narrow groove 3 Bulkhead 4 Gutter part 5 Digging tool 5a Blade part 6 Fin 6a Small fin 7 Cutting tool 8 Chip

Claims (2)

A forming method for forming a plurality of narrow grooves on one surface of a metal material,
A fin forming step of digging up a digging tool having a blade portion formed at the tip in the moving direction in the direction of the other surface in a state having a predetermined angle and integrally standing up plate-like fins is sequentially repeated while being spaced apart by a predetermined interval. , After the digging process to form a plurality of fins with the other side of the metal plate as the base end,
Fin cutting in which a plurality of fins are divided into predetermined dimensions and cut to one surface in a state where the cutting tool has a predetermined angle from the direction in which the blade portion at the tip is orthogonal to the surfaces of the fins. The process is repeated sequentially, and the fin is cut so that it is flush with one surface of the metal material,
A method of forming narrow grooves on a metal plate, comprising forming a plurality of narrow grooves having a predetermined depth between adjacent fins. The width of the digging tool is formed smaller than the width of the metal material,
A plurality of small pieces in which the metal tool and the digging tool are inserted at a predetermined position spaced apart from one end side of the metal material in a state having a predetermined angle, and a base portion is connected to the metal material. After sequentially forming the small fins, the fin forming step of digging and raising the tool in the direction of the other surface in a state having a predetermined angle and integrally standing up the plate-like fins is sequentially repeated while being spaced apart by a predetermined interval. After forming the plurality of fins to a predetermined position separated from the other end side of the metal material, a fin cutting process is sequentially repeated to form a plurality of narrow grooves having a predetermined depth between the adjacent fins. Forming,
The method for forming a narrow groove on a metal plate according to claim 1, wherein a collar portion surrounding the plurality of narrow grooves is formed around the metal material.

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