US20130192329A1 - Protrusion forming device and method for forming protrusion part for heat exchanger - Google Patents
Protrusion forming device and method for forming protrusion part for heat exchanger Download PDFInfo
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- US20130192329A1 US20130192329A1 US13/752,870 US201313752870A US2013192329A1 US 20130192329 A1 US20130192329 A1 US 20130192329A1 US 201313752870 A US201313752870 A US 201313752870A US 2013192329 A1 US2013192329 A1 US 2013192329A1
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- United States
- Prior art keywords
- tool bit
- protrusion part
- forming
- pathway
- protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/068—Shaving, skiving or scarifying for forming lifted portions, e.g. slices or barbs, on the surface of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/022—Making the fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
Abstract
A protrusion forming device includes a holding portion holding an object that is be processed, a tool bit having a cutting portion capable of cutting an object held by a holding portion, and a drive portion capable of driving the tool bit. The tool bit is movable along a cut-in pathway so that the cutting portion is inserted into the object. The cutting portion is movable along a further-cut pathway so as to form a protrusion part that is cut in a linear shape and is connected to the object. The tool bit continuously contacts the protrusion part while moving along a forming pathway such that the protrusion part extends perpendicular to an outer surface of the object.
Description
- This application is based on and incorporates herein by reference Japanese Patent Application No. 2012-019637 filed on Feb. 1, 2012.
- The present disclosure relates to a protrusion forming device and a method for forming a protrusion part for a heat exchanger.
- A method is known, which is for forming a protrusion part connected to an object by cutting (i.e., shaping) the object without separating the protrusion part from the object. In shaping process, the protrusion part is generally shaped so as to be rolled back, in order to increase a cutting efficiency. For example, Patent Document 1 (JP 2009-32755 A corresponding to US 2009/0025222 A1) discloses a method for forming a platy heat radiation fin that is a protrusion part rolled back.
- When the rolled-back protrusion part is used as a heat radiation fin, air between the radiation fins is difficult to be exchanged for outer air. Thus, a cooling capacity of the heat radiation fin may be relatively small.
- It is an objective of the present disclosure is to provide a protrusion forming device capable of forming a protrusion part extending perpendicular to an outer surface of an object, to provide a method for forming the protrusion part, and to provide a heat exchanger having the protrusion part formed by the protrusion forming device or the method for forming the protrusion part.
- According to an aspect of the present disclosure, a protrusion forming device includes a holding portion, a tool bit and a drive portion. The holding portion holds an object that is to be processed, and the tool bit has a cutting portion capable of cutting the object. The tool bit is movable along a cut-in pathway intersecting with an outer surface of the object so that the cutting portion of the tool bit is inserted into the object. The cutting portion is inserted into the object is movable along a further-cut pathway parallel to the outer surface of the object so as to provide a protrusion part that is cut in a linear shape and is connected to the object. The tool bit continuously contacts the protrusion part while moving along a predetermined forming pathway such that the protrusion part extends perpendicular to the outer surface of the object.
- According to another aspect of the present disclosure, a method is provided, which is for forming a protrusion part extending perpendicular to an outer surface of an object that is to be processed. According to the method, a tool bit is moved along a cut-in pathway intersecting with the outer surface of the object so that a cutting portion of the tool bit is inserted into the object. Moreover, the cutting portion inserted into the object is further moved along a further-cut process parallel to the outer surface of the object so as to form a protrusion part that is cut in a linear shape and is connected to the object. Furthermore, the tool bit is moved along a predetermined forming pathway while keeping the tool bit in contact with the protrusion part.
- Accordingly, the protrusion part extending perpendicular to the outer surface of the object can be formed by cutting work. When the protrusion part extending perpendicular to the outer surface is used as a heat radiation fin, a high heat cooling capacity can be obtained.
- In the present specification, a word “direction” includes a linear direction and a curved direction. Thus, the “direction intersecting with the protrusion part” includes a linear direction intersecting with the protrusion part perpendicularly, a linear direction inclined from a longitudinal direction of the protrusion part, and a circumferential direction of a circle that is drawn by using the base end portion of the protrusion part as a center of the circle.
- The disclosure, together with additional objectives, features and advantages thereof, will be best understood from the following description, the appended claims and the accompanying drawings, in which:
-
FIG. 1 is a perspective view showing a passage member having heat radiation fins formed by a protrusion forming device according to a first embodiment of the present disclosure; -
FIG. 2 is a sectional view showing a part of the passage member inFIG. 1 ; -
FIG. 3 is a diagram showing the protrusion forming device according to the first embodiment; -
FIG. 4 is a diagram showing the protrusion forming device viewed from IV inFIG. 3 ; -
FIG. 5 is an enlarged diagram showing a cutting portion of a tool bit for the protrusion forming device inFIG. 3 ; -
FIG. 6 is a diagram showing the cutting portion of the tool bit viewed from VI inFIG. 5 ; -
FIG. 7 is a flowchart showing a process for forming the heat radiation fin in the protrusion forming device according to the first embodiment; -
FIG. 8 is a diagram showing the tool bits moved so that the tool bits become adjacent to the passage member, viewed from VIII inFIG. 3 ; -
FIG. 9 is a diagram showing the tool bits moved from a state ofFIG. 8 so that the tool bits are inserted into the passage member; -
FIG. 10 is a diagram showing the tool bits moved from a state ofFIG. 9 along a further-cut pathway; -
FIG. 11 is a diagram showing the tool bits moved from a state ofFIG. 10 along a first forming pathway; -
FIG. 12 is a diagram showing tool bits moved along a second forming pathway in a protrusion forming device according to a second embodiment of the present disclosure; -
FIG. 13 is a diagram showing a cutting portion of a tool bit according to a third embodiment of the present disclosure; and -
FIG. 14 is a diagram showing a cutting portion of a tool bit according to a fourth embodiment of the present disclosure. - Embodiments of the present disclosure will be described hereinafter referring to drawings. In the embodiments, a part that corresponds to a matter described in a preceding embodiment may be assigned with the same reference numeral, and redundant explanation for the part may be omitted. When only a part of a configuration is described in an embodiment, another preceding embodiment may be applied to the other parts of the configuration. The parts may be combined even if it is not explicitly described that the parts can be combined. The embodiments may be partially combined even if it is not explicitly described that the embodiments can be combined, provided there is no harm in the combination.
- A
protrusion forming device 20 according to a first embodiment of the present disclosure, shown inFIGS. 3 and 4 , formsheat radiation fins 12 of apassage member 10 shown inFIG. 1 . Thepassage member 10 used for aheat exchanger 9 may be a cylindrical hollow member, and has therein, for example, apassage 11 through which a cooling medium such as coolant is capable of flowing. Heat of the cooling medium in thepassage 11 transfers to thepassage member 10 to be radiated from the heat radiation fins 12 to ambient air. As shown inFIG. 2 , theheat radiation fins 12 are needle-like protrusion parts that extend perpendicular to anouter surface 13 of thepassage member 10. - The
protrusion forming device 20 will be described with reference toFIGS. 3 to 6 . Theprotrusion forming device 20 includes abase 30, avise 31, a drive portion andtool bits 60. The drive portion includes anx-axis actuator 40, a y-axis actuator 50 and anelectronic control device 70. Thevise 31 may be used as an example of a holding portion which holds an object that is to be processed by the protrusion forming device. - The
vise 31 is fixed on a board of thebase 30, and holds thepassage member 10 that is used as an example of the processed object. Thex-axis actuator 40 includes aslider 41 that is slidable in an x-axial direction parallel to a surface of the board of thebase 30. Thex-axis actuator 40 is supported by apole 42 to be fixed to thebase 30 as shown inFIG. 4 . Theslider 41 is, for example, fixed to a ball screw that is provided rotatably in acase 43. When the ball screw is rotary-driven by amotor 44, theslider 41 can be moved in the x-axial direction. Thepassage member 10 is held by thevise 31 so that theouter surface 13 on an upper side of thepassage member 10 becomes parallel to the x-axial direction. Thepassage member 10 is held by thevise 31 horizontally in the first embodiment, as shown inFIGS. 3 to 6 . - The y-
axis actuator 50 includes aslider 51 that is slidable in a y-axial direction perpendicular to the board surface of thebase 30. Theslider 51 is, for example, fixed to a ball screw that is provided rotatably in acase 52. When the ball screw is rotary-driven by amotor 53, theslider 51 can be moved in the y-axial direction. Thecase 52 is fixed to and integrated with theslider 41 of thex-axis actuator 40 to be slidable in the x-axial direction together with the motion of theslider 41 in the x-axial direction. - Each
tool bit 60 includes asupport portion 61 and a cuttingportion 62 that protrudes from one end part of thesupport portion 61. The cuttingportion 62 protrudes in a direction intersecting with a longitudinal direction of thesupport portion 61. The cuttingportion 62 is capable of cutting thepassage member 10. A rake angle θ of arake face 63 of the cuttingportion 62 is set larger than a rake angle of a rake face of a cutting portion of a general shaper used for cutting a flat surface. The rake angle θ is an angle of therake face 63 with respect to a line perpendicular to theouter surface 13 of thepassage member 10 as shown inFIG. 5 . - The rake face 63 of the
tool bit 60 hasmultiple grooves 66 that extend from anedge 64 toward abase end 65 of thetool bit 60 as shown inFIG. 5 . Thebase end 65 is located at a connection portion between the cuttingportion 62 and thesupport portion 61. Thegrooves 66 are separated from one another in a width direction of thetool bit 60, and are parallel to each other. The width direction of thetool bit 60 is perpendicular to the x-axial direction and the y-axial direction. - The other end parts of the
support portions 61 of thetool bits 60 are connected to each other in the x-axial direction to be a cuttingtool 67 having a platy shape. In the first embodiment, the cuttingtool 67 is made of threetool bits 60, for example. - The
protrusion forming device 20 has a plurality of thecutting tools 67 arranged in the width direction of thetool bit 60. In the first embodiment, theprotrusion forming device 20 includes fourcutting tools 67, for example. As shown inFIG. 3 , thecutting tools 67 are held by achuck device 71 fixed to theslider 51, so that theedges 64 of thetool bits 60 of one of thecutting tools 67 do not overlap theedges 64 of thetool bits 60 of another one of thecutting tools 67 in the width direction of thetool bits 60, i.e., in an arrangement direction (thickness direction) of thecutting tools 67. - The
tool bits 60 move in the y-axial direction together with theslider 51 when theslider 51 moves in the y-axial direction. Thetool bits 60 move in the x-axial direction together with theslider 41 and the y-axis actuator 50 when theslider 41 moves in the x-axial direction. - The
electronic control device 70 has a microcomputer that includes a central processing unit (CPU), a read-only memory (ROM) and a random access memory (RAM). Theelectronic control device 70 operates themotors tool bits 60 in the x-axial direction and the y-axial direction. - Specifically, the
electronic control device 70 operates themotors tool bits 60 along an approaching pathway K1, a cut-in pathway K2, a further-cut pathway K3 and a first forming pathway K4. As shown inFIG. 5 , the approaching pathway K1 extends downward in a direction perpendicular to theouter surface 13 of thepassage member 10. An end point of the approaching pathway K1 is located immediately above a position where theedge 64 of thetool bit 60 contacts theouter surface 13. - As shown in
FIG. 5 , the end point of the approaching pathway K1 is used as a start point of the cut-in pathway K2, and the cut-in pathway K2 extends downward in a cut-in direction that is inclined at a predetermined angle (e.g., 10°) with respect to theouter surface 13 of thepassage member 10. An end point of the cut-in pathway K2 is located inside thepassage member 10. - As shown in
FIG. 5 , the end point of the cut-in pathway K2 is used as a start point of the further-cut pathway K3. The further-cut pathway K3 extends along a direction parallel to theouter surface 13 of thepassage member 10, and extends along a direction from thebase end 65 to theedge 64 of thetool bit 60. An end point of the further-cut pathway K3 is used as a start point of the first forming pathway K4, and the first forming pathway K4 extends upward in the direction perpendicular to theouter surface 13 of thepassage member 10, as shown inFIG. 5 . In other words, the first forming pathway K4 extends in a direction away from theouter surface 13 of thepassage member 10. - Next, a method for forming the
heat radiation fins 12 by using theprotrusion forming device 20 will be described referring toFIGS. 7 to 11 . As shown inFIG. 7 , the method for forming theheat radiation fins 12 includes a cut-in step S1, a further-cut step S2 and a forming step S3. - Firstly, at the cut-in step S1, the
protrusion forming device 20 displaces thetool bits 60 along the approaching pathway K1 as shown inFIG. 8 , so that theedges 64 of thetool bits 60 become in the vicinity of theouter surface 13 of thepassage member 10. Subsequently, theprotrusion forming device 20 displaces thetool bits 60 along the cut-in pathway K2 as shown inFIG. 9 , so that theedges 64 of thetool bits 60 are inserted into thepassage member 10. A cutting edge angle of thetool bits 60 with respect to theouter surface 13 is set at 10°, for example. - Next, at the further-cut step S2 shown in
FIG. 7 , theprotrusion forming device 20 displaces thetool bits 60, which are inserted into thepassage member 10, along the further-cut pathway K3 as shown inFIG. 10 . Accordingly, linear cut parts 14 (protrusion parts) connected to thepassage member 10 are provided. When theedges 64 of thetool bits 60 are located at the end point of the further-cut pathway K3, thecut parts 14 extend along the rake faces 63 of thetool bits 60, and are not perpendicular to theouter surface 13 of thepassage member 10. - Next, at the forming step S3 shown in
FIG. 7 , theprotrusion forming device 20 displaces thetool bits 60 along the first forming pathway K4 with thetool bits 60 kept in contact with thecut parts 14, as shown inFIG. 11 . At this step S3, theedges 64 of thetool bits 60 slide on base end portions of thecut parts 14 to bend the base end portions so that thecut parts 14 are formed to be theheat radiation fins 12 extending perpendicular to theouter surface 13. The base end portion of thecut part 14 is directly connected to theouter surface 13. The first forming pathway K4 starts from a position adjacent to the base end portion of thecut part 14. - As described above, the
protrusion forming device 20 of the first embodiment includes thetool bits 60, thex-axis actuator 40, the y-axis actuator 50 and theelectronic control device 70. Theelectronic control device 70 is capable of operating themotor 44 of thex-axis actuator 40 and themotor 53 of the y-axis actuator 50, and thereby displacing thetool bits 60 along the approaching pathway K1, the cut-in pathway K2, the further-cut pathway K3 and the first forming pathway K4. - The
electronic control device 70 displaces thetool bits 60 along the cut-in pathway K2 so that the cuttingportions 62 of thetool bits 60 are inserted into thepassage member 10. Next, theelectronic control device 70 displaces thetool bits 60, which are inserted into thepassage member 10, along the further-cut pathway K3 so as to provide thelinear cut parts 14 connected to thepassage member 10. Subsequently, theelectronic control device 70 displaces thetool bits 60 along the first forming pathway K4 with thetool bits 60 kept in contact with thecut parts 14. Accordingly, theedges 64 of thetool bits 60 slide on and bend the base end portions of thecut parts 14, so that thecut parts 14 can be formed to be theheat radiation fins 12 extending perpendicular to theouter surface 13. - According to the
protrusion forming device 20 and the protrusion forming method using theprotrusion forming device 20, theradiation fins 12 extending perpendicular to theouter surface 13 of thepassage member 10 can be formed by cutting work. Therefore, theheat radiation fins 12 having a high cooling capacity can be obtained. - In the first embodiment, the
rake face 63 of eachtool bit 60 has thegrooves 66 that extend from theedge 64 to thebase end 65 of thetool bit 60. Hence, it can be restricted that thecut parts 14 are bend in the width direction of thetool bit 60. Therefore, theheat radiation fins 12 having a high cooling capacity can be obtained. - In the first embodiment, the
passage member 10 may have thepassage 11 through which a cooling medium is capable of flowing. Theheat radiation fins 12 may radiate heat absorbed from the cooling medium through thepassage member 10. Thepassage member 10 may be used as theheat exchanger 9. Theheat radiation fins 12 may be used as a heat radiation portion in theheat exchanger 9. Therefore, theheat exchanger 9 having a high cooling capacity can be obtained. Theheat radiation fins 12 may be used as a heat absorption portion in theheat exchanger 9. - A protrusion forming device according to a second embodiment of the present disclosure will be described with reference to
FIG. 12 . The protrusion forming device of the second embodiment includes a drive portion capable of displacingtool bits 60 along a second forming pathway K5. A start point of the second forming pathway K5 is located at a position that is away from a base end portion of a cut part 14 (protrusion part), and is located between the base end portion and an edge portion of thecut part 14 as shown inFIG. 12 . The second forming pathway K5 extends in a circumferential direction of a circle that is drawn by using the base end portion of thecut part 14 as a center. In other words, the second forming pathway K5 extends in a direction intersecting with thecut part 14. When thetool bit 60 moves along the second forming pathway K5, the base end portion of thecut part 14 is pressed and bent so that thecut part 14 is formed to be theheat radiation fin 12 that extends perpendicular to anouter surface 13 of apassage member 10. - In the second embodiment, effects similar to effects of the first embodiment can be obtained. Additionally, a curvature of the base end portion of the
cut part 14 can be made to be gentle in the second embodiment. Therefore, it can be restricted that thecut part 14 breaks from its base end portion when thecut part 14 is bent and raised up. - A
tool bit 80 of a protrusion forming device according to a third embodiment of the present disclosure will be described referring toFIG. 13 . As shown inFIG. 13 , arake face 81 of thetool bit 80 has acurve surface 84 extending from anedge 82 of thetool bit 80 toward abase end 83 of thetool bit 80 in a direction away from thecut part 14. Specifically, thecurve surface 84 is protruded from therake face 81 toward thecut part 14, and an end part of thecurve surface 84 is located at theedge 82 to contact thecut part 14. The other end part of thecurve surface 84 is distant from thecut part 14. - In the third embodiment, effects similar to effects of the first embodiment can be obtained. Additionally, a contact area between the
tool bit 80 and thecut part 14 is relatively small, and a bending moment applied on thecut part 14 can be made to be relatively small in the third embodiment. Therefore, thecut part 14 obtained by the cutting work can be made to be further linear, and a cooling capacity of a heat radiation fin 12 (cut part) can be increased. - A
tool bit 90 of a protrusion forming device according to a fourth embodiment of the present disclosure will be described in reference toFIG. 14 . As shown inFIG. 14 , in the fourth embodiment, arake face 91 of thetool bit 90 has astep surface 94 that extends from anedge 94 of thetool bit 90 toward abase end 93 of thetool bit 90 in a direction away from acut part 14. A part of therake face 91 between theedge 92 and thestep surface 94 contacts thecut part 14, and the other part of therake face 91 between thebase end 93 and thestep surface 94 is distant from thecut part 14. Effects in the fourth embodiment are similar to those in the third embodiment. - Although the present disclosure has been fully described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be noted that various changes and modifications will become apparent to those skilled in the art. For example, the protrusion parts may be formed in a processed object other than the
passage member 10. The protrusion parts may be used for a purpose other than theheat radiation fins 12. Thepassage member 10 may be held by thevise 31 without being located horizontally. - The further-cut pathway K3 may extend in a direction other than the direction parallel to the
outer surface 13 of thepassage member 10. The extending direction of the cut-in pathway K2 may be inclined from theouter surface 13 at an angle other than 10°. - The forming pathway may extend in a direction other than the direction perpendicular to the
outer surface 13 of thepassage member 10. The forming pathway may extend along a straight line perpendicular to thecut part 14, or may extend along a straight line inclined from thecut part 14. - A size of the
tool bit actuators tool bit actuators actuators - The drive portion may include, for example, mechanical components that do not require an electronic control, instead of the two
actuators electronic control device 70. - In the first embodiment, the
rake face - The
rake face tool bits tool bits - The protrusion forming device may be configured to form a protrusion part by using a
single tool bit cutting tools 67 made ofmultiple tool bits - The
edges tool bits cutting tools 67 may overlap theedges tool bits cutting tools 67 in the arrangement direction of thecutting tools 67. The present disclosure is not limited to the above-described embodiments, and is feasible in various states without departing from the scope of the disclosure. - Additional advantages and modifications will readily occur to those skilled in the art. The disclosure in its broader terms is therefore not limited to the specific details, representative apparatus, and illustrative examples shown and described.
Claims (12)
1. A protrusion forming device comprising:
a holding portion which holds an object that is to be processed;
a tool bit having a cutting portion capable of cutting the object; and
a drive portion capable of driving the tool bit, wherein
the tool bit is movable along a cut-in pathway intersecting with an outer surface of the object so that the cutting portion of the tool bit is inserted into the object,
the cutting portion inserted into the object is movable along a further-cut pathway parallel to the outer surface of the object so as to provide a protrusion part that is cut in a linear shape and is connected to the object, and
the tool bit continuously contacts the protrusion part while moving along a predetermined forming pathway such that the protrusion part extends perpendicular to the outer surface of the object.
2. The protrusion forming device according to claim 1 , wherein
the forming pathway starts from a position adjacent to a base end portion of the protrusion part,
the forming pathway extends in a direction away from the outer surface of the object, and
the tool bit slides on and bends the protrusion part when the tool bit is moved along the forming pathway.
3. The protrusion forming device according to claim 1 , wherein
the forming pathway starts from a position that is away from a base end portion of the protrusion part and is located between the base end portion and an edge portion of the protrusion part,
the forming pathway extends in a direction intersecting with the protrusion part, and
the tool bit presses and bends the protrusion part when the tool bit is moved along the forming pathway.
4. The protrusion forming device according to claim 1 , wherein
the tool bit has a rake face having one of a curve surface and a step surface, and
the one of the curve surface and the step surface extends from an edge of the tool bit toward a base end of the tool bit in a direction away from the protrusion part.
5. The protrusion forming device according to claim 1 , wherein the tool bit has a rake face having a groove that extends from an edge of the tool bit toward a base end of the tool bit.
6. The protrusion forming device according to claim 1 , wherein the protrusion part is used as a heat radiation fin that radiates heat of the object.
7. The protrusion forming device according to claim 1 , wherein the protrusion part is used as a heat radiation portion or a heat absorption portion in a heat exchanger.
8. A method for forming a protrusion part extending perpendicular to an outer surface of an object that is to be processed, the method comprising:
moving a tool bit along a cut-in pathway intersecting with the outer surface of the object so that a cutting portion of the tool bit is inserted into the object;
further moving the cutting portion inserted into the object along a further-cut process parallel to the outer surface of the object so as to form a protrusion part that is cut in a linear shape and is connected to the object; and
further moving the tool bit along a predetermined forming pathway while keeping the tool bit in contact with the protrusion part.
9. The forming method according to claim 8 , wherein
the forming pathway starts from a position adjacent to a base end portion of the protrusion part,
the forming pathway extends in a direction away from the outer surface of the object, and
the tool bit slides on and bends the protrusion part when the tool bit is moved along the forming pathway.
10. The forming method according to claim 8 , wherein
the forming pathway starts from a position that is away from a base end portion of the protrusion part and is located between the base end portion and an edge portion of the protrusion part,
the forming pathway extends in a direction intersecting with the protrusion part, and
the tool bit presses and bends the protrusion part when the tool bit is moved along the forming pathway.
11. The forming method according to claim 8 , wherein the protrusion part is used as a heat radiation fin that radiates heat of the object.
12. The forming method according to claim 8 , wherein the protrusion part is used as a heat radiation portion or a heat absorption portion in a heat exchanger.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US15/342,394 US10449595B2 (en) | 2012-02-01 | 2016-11-03 | Protrusion forming device and method for forming protrusion part for heat exchanger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2012-019637 | 2012-02-01 | ||
JP2012019637A JP5582364B2 (en) | 2012-02-01 | 2012-02-01 | PROJECTION FORMING DEVICE, PROJECTION FORMING METHOD, AND HEAT EXCHANGER |
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US15/342,394 Division US10449595B2 (en) | 2012-02-01 | 2016-11-03 | Protrusion forming device and method for forming protrusion part for heat exchanger |
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US20130192329A1 true US20130192329A1 (en) | 2013-08-01 |
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US13/752,870 Abandoned US20130192329A1 (en) | 2012-02-01 | 2013-01-29 | Protrusion forming device and method for forming protrusion part for heat exchanger |
US15/342,394 Active 2034-06-18 US10449595B2 (en) | 2012-02-01 | 2016-11-03 | Protrusion forming device and method for forming protrusion part for heat exchanger |
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WO2021116577A1 (en) * | 2019-12-13 | 2021-06-17 | Valeo Systemes Thermiques | Heat exchanger, and process for manufacturing such an exchanger |
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USD840958S1 (en) * | 2016-11-15 | 2019-02-19 | Borgwamer Emissions Systems Spain, S.L.U. | Shaped tube with a pattern |
KR101771875B1 (en) * | 2017-03-16 | 2017-08-28 | 임준수 | Ultrasonic Sewing Machine Having Function of Cooling |
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Also Published As
Publication number | Publication date |
---|---|
DE102013201336A1 (en) | 2013-08-01 |
CN103240577B (en) | 2015-05-27 |
US10449595B2 (en) | 2019-10-22 |
CN103240577A (en) | 2013-08-14 |
JP2013158839A (en) | 2013-08-19 |
US20170050233A1 (en) | 2017-02-23 |
JP5582364B2 (en) | 2014-09-03 |
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