WO2021192685A1 - 測定装置 - Google Patents

測定装置 Download PDF

Info

Publication number
WO2021192685A1
WO2021192685A1 PCT/JP2021/004934 JP2021004934W WO2021192685A1 WO 2021192685 A1 WO2021192685 A1 WO 2021192685A1 JP 2021004934 W JP2021004934 W JP 2021004934W WO 2021192685 A1 WO2021192685 A1 WO 2021192685A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring device
groove
housing
mold
strain
Prior art date
Application number
PCT/JP2021/004934
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
卓生 小林
竜也 佐藤
知大 岡田
康太 小林
Original Assignee
本田技研工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to CN202180023150.2A priority Critical patent/CN115315618A/zh
Priority to JP2022509377A priority patent/JPWO2021192685A1/ja
Publication of WO2021192685A1 publication Critical patent/WO2021192685A1/ja

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes

Definitions

  • the present invention relates to a measuring device for measuring the strain of a mold.
  • Patent Document 1 a device for measuring mold strain by attaching a strain gauge to a bolt and attaching the bolt to a die set plate is disclosed.
  • An object of the present invention is to provide a measuring device that has little change in the rigidity of equipment, can be easily installed, and can measure mold strain more accurately.
  • the present invention solves the above-mentioned problems by the following solutions.
  • the description will be given with reference numerals corresponding to the embodiments of the present invention, but the present invention is not limited thereto.
  • the first invention is a measuring device (20, 20B) for measuring the strain of the mold (30), which is a narrow portion (11a) provided on a support member (10) that supports the mold (30).
  • a hollow housing (21, 21B) inserted into the groove of the T groove (11) composed of a wide portion (11b) and a strain gauge (22) attached to the inner surface of the housing (21, 21B).
  • the housing (21, 21B) is a measuring device (20, 20B) that is inserted into the groove by elastically deforming at least a part of the housing (21, 21B).
  • the housing (21, 21B) has a cross-sectional shape orthogonal to the longitudinal direction on the side far from the mold (30).
  • the strain gauge (22) is formed in a substantially U shape having an opening (21a) on the surface of the mold, and the strain gauge (22) is attached to the inner surface of the surface on the side close to the mold (30).
  • the housings (21, 21B) are formed so that the opening (21a) side is larger than the groove width of the wide portion (11b) of the T groove (11), and the wide width in the T groove (11).
  • the measuring device (20, 20B) is characterized in that the housing (21, 21B) is elastically deformed into the portion (11b) and inserted into the groove.
  • a third invention is the measuring device (20, 20B) according to the first invention or the second invention, wherein the housing (21, 21B) has a height at a central portion upward in the longitudinal direction.
  • the housings (21, 21B) are elastically deformed into the wide portion (11b) in the T groove (11) and inserted into the groove. It is a measuring device (20, 20B) characterized by.
  • a fourth invention is the groove inner wall surface of the housing (21, 21B) and the T-groove (11) in the measuring device (20, 20B) according to any one of the first to third inventions.
  • the measuring device (20, 20B) is characterized in that a shim (23) is inserted between the two.
  • a fifth invention is the measuring device (20, 20B) according to any one of the first to fourth inventions, wherein the housing (21, 21B) is closer to the mold (30).
  • a convex portion (21b) to be inserted into the narrow width portion (11a) of the T groove (11) is provided on the surface of the convex portion (11b), and the outer surface of the convex portion (21b) is formed with the mold (30).
  • the measuring device (20, 20B) is in contact with the strain gauge (22) and is provided on the inner surface of the convex portion (21b).
  • a sixth aspect of the present invention is the measuring device (20, 20B) according to any one of the first to fifth inventions, wherein the measuring device (20, 20B) distorts the press mold (30).
  • a measuring device for measuring wherein a plurality of cushion pins (50) provided on the bolster (10) as the support member (10) are arranged substantially at the center of an interval at which the cushion pins (50) are arranged. 20, 20B).
  • the present invention it is possible to provide a measuring device that has little change in the rigidity of the equipment, can be easily installed, and can measure the strain of the mold more accurately.
  • FIG. 5 is an enlarged perspective view of an end portion of the measuring device 20C.
  • FIG. 1 is a cross-sectional view showing an outline of a press molding apparatus 100 using the measuring apparatus 20 according to the present invention.
  • each figure shown below including FIG. 1 is a diagram schematically shown, and the size and shape of each part are shown by being exaggerated or omitted as appropriate for easy understanding. ing. Further, in the following description, specific numerical values, shapes, materials and the like will be described, but these can be changed as appropriate.
  • the press molding apparatus 100 using the measuring apparatus 20 of the first embodiment includes a lower bolster 10, a measuring apparatus 20, a lower mold 30, a die cushion pad 40, a cushion pin 50, a blank holder 60, and an upper bolster. It includes a 70 and an upper mold 80. Since the press molding apparatus 100 is a form of a press apparatus conventionally used except for the measuring apparatus 20, specific description of each part will be omitted as appropriate.
  • the lower mold 30 and the upper mold 80 are molds for press molding.
  • FIG. 2 is a perspective view of the lower bolster.
  • the lower bolster 10 includes a T-groove 11 used for fixing the lower mold 30 and a die cushion hole 12.
  • the T-groove 11 is a groove in which a plurality of rows are arranged side by side along the upper surface on which the lower mold 30 is provided, and is open on the upper surface side.
  • the T-groove 11 is a groove normally provided in a conventionally used lower bolster, and a part thereof is a bolt-shaped fixture 90 for fixing the lower mold 30 (see FIG. 6). Is inserted.
  • a plurality of die cushion holes 12 are provided so as to penetrate in the vertical direction.
  • a cushion pin 50 is inserted into a part of the die cushion hole 12.
  • the lower bolster 10 is provided with a large number of T-grooves 11 and die cushion holes 12 so that it can be used even when the lower mold 30 is replaced with another lower mold, and has a highly versatile configuration. It has become.
  • the T groove 11 is arranged substantially at the center of the interval at which the die cushion holes 12 are arranged.
  • FIG. 3 is an enlarged cross-sectional view showing the range A in FIG.
  • the T-groove 11 has a narrow portion 11a and a wide portion 11b.
  • the narrow portion 11a is It is provided with an opening on the upper surface side of the lower bolster 10.
  • the wide portion 11b is located on the lower surface side of the narrow portion 11a and has a wider width in the cross section shown in FIG. 3, which is a cross section in a direction orthogonal to the extending direction of the T groove 11 than the narrow portion 11a. ing.
  • the measuring device 20 is inserted inside the T-groove 11.
  • the measuring device 20 includes a housing 21 and a strain gauge 22.
  • the housing 21 has a cross-sectional shape (cross-sectional shape shown in FIG. 3) orthogonal to the longitudinal direction thereof, which is formed in a substantially U shape having an opening 21a on the lower surface on the side far from the mold.
  • the housing 21 can be formed, for example, by press-molding a metal plate such as iron or aluminum having a plate thickness of about 0.5 to 2 mm.
  • a strain gauge 22 is attached to the upper inner surface of the housing 21 on the side closer to the mold.
  • a wiring (not shown) is attached to the strain gauge 22, and this wiring is connected to an external strain measuring instrument (not shown) of the lower bolster 10 through the housing 21 and the T-groove 11. There is. It is desirable that a plurality of strain gauges 22 are arranged side by side along the longitudinal direction of the housing 21. This is because it is possible to detect different strain distributions for each part.
  • FIG. 4 is a cross-sectional view of the measuring device 20 in a direction orthogonal to the longitudinal direction.
  • the single state of the housing 21 not inserted inside the T-groove 11 is shown by a solid line
  • the housing 21 inserted inside the T-groove 11 is shown by a broken line.
  • the housing 21 is formed so that the opening 21a side is larger than the groove width of the wide portion 11b of the T groove 11 in the stand-alone state in which the housing 21 is not inserted into the T groove 11.
  • the housing 21 is elastically deformed into the wide portion 11b in the T groove 11 and inserted into the groove of the T groove 11. As a result, the adhesion between the housing 21 and the side wall of the wide portion 11b can be improved, and the distortion of the lower bolster 10 can be obtained with high sensitivity.
  • FIG. 5 is a perspective view of the housing 21.
  • a straight line is also shown as a alternate long and short dash line as an auxiliary line for making the warp of the housing 21 visually easy to understand.
  • the housing 21 is formed so as to warp in the longitudinal direction in a direction in which the central portion increases in height upward. Due to this warp, the overall height of the free state housing 21 shown in FIG. 5 is larger than the internal height of the wide portion 11b in the T groove 11.
  • the housing 21 is elastically deformed into the wide portion 11b in the T groove 11 and inserted into the groove of the T groove 11. As a result, the adhesion between the housing 21 and the upper and lower inner walls of the wide portion 11b can be improved, and the distortion of the lower bolster 10 can be acquired with high sensitivity.
  • FIG. 6 is a cross-sectional view of the lower bolster 10 cut along the T-groove 11 at the position where the fixture 90 is provided.
  • the lower mold 30 is fixed to the lower bolster 10 at a plurality of places by using a fixture 90.
  • the fixture 90 inserts a bolt-shaped member into the T-groove 11, sandwiches the attachment portion 31 of the lower mold 30 with a washer and a nut, and fixes the bolt-shaped member.
  • the measuring device 20 cannot be provided at the position where the fixture 90 is provided. Further, the place where the fixture 90 is provided often changes depending on the type of the lower mold 30. Replacing the measuring device 20 every time the lower mold 30 is replaced is not desirable because the replacement work becomes complicated.
  • the length of the measuring device 20 in the present embodiment in the longitudinal direction is a length that can be arranged between the fixtures 90 even if the distance between the fixtures 90 is the shortest among the lower molds 30 that are expected to be replaced. ing. That is, the length of the measuring device 20 in the longitudinal direction is shorter than the length when the distance between the fixtures 90 is the shortest. Therefore, the measuring device 20 can be inserted into all of the T-grooves 11 of the lower bolster 10.
  • a shim 23 can be appropriately inserted between the housing 21 and the inner wall surface of the T-groove.
  • the shim is a metal plate or the like for adjusting a gap, which is also called a shim plate.
  • shims 23 are arranged between the housing 21 and the lower wall surface of the T-groove 11 near both ends of the housing 21 in the longitudinal direction. The shim 23 is not always necessary, and can be omitted when the housing 21 and the inner wall surface of the T-groove 11 are sufficiently in close contact with each other.
  • the surfaces in contact with the bottom surfaces of the T-grooves 11 on both sides of the opening 21a are formed in an inverted C shape and elastically deformed when inserted into the T-grooves 11 so as to be brought into close contact with the lower wall surface of the T-grooves 11. It may be. Further, the position is not limited to the position illustrated in this embodiment. For example, shims may be arranged between the left and right side surfaces of the housing 21 and the left and right wall surfaces in the T-groove.
  • the strain of the lower bolster 10 can be accurately acquired by the measuring device 20, and the distribution thereof can be acquired in detail.
  • the strain of the lower bolster 10 has a high correlation with the strain of the lower mold 30. Therefore, the strain of the lower bolster 10 obtained by the measuring device 20 can be replaced with the strain of the lower mold 30.
  • the following effects can be obtained.
  • Easy installation It can be easily installed on an existing bolster without changing mass production conditions or affecting mass production (stopping mass production, etc.).
  • the installation of the measuring device 20 does not affect the product.
  • the rigidity of the bolster is hardly increased by installing the measuring device 20, and the rigidity of the bolster is hardly decreased by processing the bolster. It does not affect the rigidity of molds that have been mass-produced until now.
  • the measuring device 20 of the first embodiment it can be easily installed by simply inserting it into the T groove 11 of the existing lower bolster 10, and the strain of the mold can be measured accurately. Further, since the existing lower mold 30 and lower bolster 10 do not need to be additionally processed, the change in the rigidity of the equipment due to the presence or absence of the measuring device 20 can be extremely reduced. Therefore, not only the measured value but also the equipment itself equipped with the measuring device 20 can be applied as it is at the time of mass production.
  • FIG. 7 is a diagram showing the measuring device 20B of the second embodiment in the same cross section as that of FIG. 3 of the first embodiment.
  • the measuring device 20B of the second embodiment is the same as the above-described first embodiment except that the form of the housing 21B is different from that of the housing 21 of the first embodiment. Therefore, the same reference numerals are given to the parts that perform the same functions as those of the first embodiment described above, and duplicate description will be omitted as appropriate.
  • the housing 21B of the second embodiment has a convex portion 21b.
  • the convex portion 21b is configured such that a part of the upper surface of the housing 21B on the side close to the mold projects upward.
  • the convex portion 21b is inserted into the narrow width portion 11a of the T groove 11.
  • the outer surface (upper surface) of the convex portion 21b is in contact with the lower mold 30.
  • the strain gauge 22 is provided on the inner surface of the convex portion 21b. Therefore, the strain gauge 22 can measure the strain of the lower mold 30 more accurately than that of the first embodiment.
  • the shim 23 is also provided on the upper surface of the housing 21B between the shoulder portion 21c in which the convex portion 21b is not provided and the ceiling surface of the wide portion 11b. The shim 23 in this portion is provided to adjust the state in which the shoulder portion 21c does not come into contact with the lower bolster 10 when the convex portion 21b comes into contact with the lower mold 30.
  • the convex portion 21b is provided so that the measuring device 20 is in direct contact with the lower mold 30, so that the strain of the lower mold 30 can be measured more accurately. Can be done.
  • FIG. 8 is a diagram showing the measuring device 20C of the third embodiment in the same cross section as that of FIG. 3 of the first embodiment.
  • the measuring device 20C of the third embodiment is the same as that of the first embodiment described above, except that the arrangement position of the strain gauge 22 and the top and bottom when the housing 21 is arranged in the T groove 11 are reversed. be. Therefore, the same reference numerals are given to the parts that perform the same functions as those of the first embodiment described above, and duplicate description will be omitted as appropriate.
  • the housing 21C of the third embodiment has a cross-sectional shape (cross-sectional shape shown in FIG.
  • strain gauges 22 are attached to each of the upper inner surfaces of the housing 21C on the side closer to the mold, that is, the upper inner surfaces on both sides of the opening 21a.
  • FIG. 9 is a cross-sectional view of the measuring device 20C in a direction orthogonal to the longitudinal direction.
  • the single state of the housing 21C not inserted inside the T-groove 11 is shown by a solid line, and the housing 21C inserted inside the T-groove 11 is shown by a broken line.
  • the housing 21C is formed so that the opening 21a side is larger than the groove width of the wide portion 11b of the T groove 11 in the stand-alone state in which the housing 21C is not inserted into the T groove 11.
  • the housing 21C has a V-shaped surface that contacts the bottom surface of the T-groove 11 on both sides of the opening 21a, and is formed to be higher than the groove height of the wide portion 11b of the T-groove 11. Has been done.
  • the housing 21C is elastically deformed into the wide portion 11b in the T groove 11 and inserted into the groove of the T groove 11. As a result, the adhesion between the housing 21C and the side wall of the wide portion 11b can be improved, and the adhesion between the housing 21C and the upper and lower inner walls of the wide portion 11b can be improved, and the distortion of the lower bolster 10 can be obtained with high sensitivity. can do.
  • FIG. 10 is an enlarged perspective view of an end portion of the measuring device 20C.
  • a large opening 21d opened with a width larger than that of the opening 21a is provided at the end of the housing 21C.
  • the large opening 21d is formed in a size that does not interfere with the fixture 90. Therefore, the measuring device 20C can be arranged in a range longer than the width of the lower mold 30, and the distortion of the lower bolster 10 can be acquired with higher sensitivity.
  • the present invention may be applied when measuring the strain of a mold used for casting.
  • the measuring device of the present invention it is preferable to insert the measuring device of the present invention into the groove of the T groove provided in the platen which is a support member for supporting the mold.
  • the measuring device 20 is arranged in all the T grooves 11 in each embodiment. Not limited to this, for example, the measuring device 20 may be arranged only in one T-groove 11, or the measuring device 20 may be arranged every several T-grooves 11, and it is necessary. The arrangement of the measuring device 20 can be changed accordingly.
  • a convex portion is added to a substantially U-shaped (substantially C-shaped) shape or a substantially U-shaped cross-sectional shape in a direction orthogonal to the longitudinal direction of the housing 21 or the housing 21B.
  • An example of the shape was described.
  • the cross-sectional shape of the housing is not limited to these, and for example, the housing 21 may have a configuration in which the lower part of the housing is fully opened without leaving a surface in contact with the bottom surface of the T groove 11 on both sides of the opening 21a. , The shape may be changed as appropriate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
PCT/JP2021/004934 2020-03-27 2021-02-10 測定装置 WO2021192685A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180023150.2A CN115315618A (zh) 2020-03-27 2021-02-10 测量装置
JP2022509377A JPWO2021192685A1 (enrdf_load_stackoverflow) 2020-03-27 2021-02-10

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020058375 2020-03-27
JP2020-058375 2020-03-27

Publications (1)

Publication Number Publication Date
WO2021192685A1 true WO2021192685A1 (ja) 2021-09-30

Family

ID=77891402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/004934 WO2021192685A1 (ja) 2020-03-27 2021-02-10 測定装置

Country Status (3)

Country Link
JP (1) JPWO2021192685A1 (enrdf_load_stackoverflow)
CN (1) CN115315618A (enrdf_load_stackoverflow)
WO (1) WO2021192685A1 (enrdf_load_stackoverflow)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342233A (en) * 1980-08-18 1982-08-03 The National Machinery Company Load detecting probe
JPH0632735U (ja) * 1992-09-30 1994-04-28 エヌティエヌ株式会社 センサ付転がり軸受
DE19925458A1 (de) * 1999-06-02 2000-12-14 Fraunhofer Ges Forschung Sensormodul für Umform-, Stanz- und Spritzgußwerkzeuge
JP2007326135A (ja) * 2006-06-08 2007-12-20 Miyazu Seisakusho Co Ltd プレス金型装置
JP2009244151A (ja) * 2008-03-31 2009-10-22 Toyota Motor Corp 圧力・摩擦力センサ、および圧力・摩擦力検出方法
JP2018164939A (ja) * 2017-03-28 2018-10-25 Ｊｆｅスチール株式会社 プレス成形荷重の測定装置および方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128799U (ja) * 1982-02-25 1983-08-31 株式会社小松製作所 プレスの金型異常検出装置
JP2007185677A (ja) * 2006-01-12 2007-07-26 Miyazu Seisakusho Co Ltd プレス金型装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342233A (en) * 1980-08-18 1982-08-03 The National Machinery Company Load detecting probe
JPH0632735U (ja) * 1992-09-30 1994-04-28 エヌティエヌ株式会社 センサ付転がり軸受
DE19925458A1 (de) * 1999-06-02 2000-12-14 Fraunhofer Ges Forschung Sensormodul für Umform-, Stanz- und Spritzgußwerkzeuge
JP2007326135A (ja) * 2006-06-08 2007-12-20 Miyazu Seisakusho Co Ltd プレス金型装置
JP2009244151A (ja) * 2008-03-31 2009-10-22 Toyota Motor Corp 圧力・摩擦力センサ、および圧力・摩擦力検出方法
JP2018164939A (ja) * 2017-03-28 2018-10-25 Ｊｆｅスチール株式会社 プレス成形荷重の測定装置および方法

Also Published As

Publication number Publication date
CN115315618A (zh) 2022-11-08
JPWO2021192685A1 (enrdf_load_stackoverflow) 2021-09-30

Similar Documents

Publication Publication Date Title
WO2021192685A1 (ja) 測定装置
JP6660032B2 (ja) プレス成形荷重の測定装置および方法
JP2004504949A (ja) 曲げプレスを運転する方法および曲げプレス、特にプレスブレーキ
US20220314292A1 (en) A tool for a bending press and an apparatus for monitoring the stress exerted by said tool
US8096236B2 (en) Press machine
TW202307327A (zh) 螺樁之測長治具及測長方法
JP2001520121A (ja) 少なくとも１つのクラウニングシステムと相互作用する上部桟及び下部桟の偏向検出装置を備えたプレス曲げ装置。
KR20160108508A (ko) 프레스 브레이크
JP2008264849A (ja) 薄板のプレス金型装置の異常検知方法
CN111721510B (zh) 一种基于实时监测的钢吊车梁智慧诊断方法
CN205784954U (zh) 一种板状类零件上孔位置度检具
CN1825076A (zh) 模具冲压力及压力中心测定装置
KR100907074B1 (ko) 금형핀 파손 검사장치
CN213599975U (zh) 一种可调节尺寸的钢背检规
JP7450225B2 (ja) 金型用荷重分布測定装置及び加工機械
CN216398035U (zh) 一种机床切削力测量辅助装置以及机床
CN221124075U (zh) 一种拉拔力测试工装
KR101829549B1 (ko) 휨 개선 지그
JP7562083B2 (ja) 鍛造装置
CN209559634U (zh) 一种汽车部件抗压强度检具
CN112588872B (zh) 一种测量多工况金属板材摩擦系数的装置与方法
CN215572567U (zh) 一种异形管材快速检测检具通用组合模块
CN222856492U (zh) 金属冲压模具
KR20250117328A (ko) 금형 없이 고속 프레스의 동적 변위 및 구조물 디플렉션 점검 방법
CN210952594U (zh) 一种汽车转向柱支架检具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21774401

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022509377

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21774401

Country of ref document: EP

Kind code of ref document: A1