JP6740908B2 - 磁歪式トルクセンサ用シャフトの製造方法 - Google Patents
磁歪式トルクセンサ用シャフトの製造方法 Download PDFInfo
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- JP6740908B2 JP6740908B2 JP2017002547A JP2017002547A JP6740908B2 JP 6740908 B2 JP6740908 B2 JP 6740908B2 JP 2017002547 A JP2017002547 A JP 2017002547A JP 2017002547 A JP2017002547 A JP 2017002547A JP 6740908 B2 JP6740908 B2 JP 6740908B2
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- magnetostrictive torque
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1255—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with diffusion of elements, e.g. decarburising, nitriding
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/102—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving magnetostrictive means
- G01L3/103—Details about the magnetic material used
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N35/00—Magnetostrictive devices
- H10N35/01—Manufacture or treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/322—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for electrical components
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Power Steering Mechanism (AREA)
- Heat Treatment Of Articles (AREA)
Description
以下、本発明の実施の形態を添付図面にしたがって説明する。
まず、磁歪式トルクセンサ(以下、単にトルクセンサという)について図1乃至図3を用いて説明しておく。図1は、トルクセンサのセンサ部の一例を示す図であり、(a)はシャフトに取り付けた際の側面図、(b)はそのA−A線断面図である。図2は、ボビンを展開した状態を模式的に示す平面図であって、(a)は第1検出コイル及び第4検出コイルを説明する図、(b)は第2検出コイル及び第3検出コイルを説明する図である。図3は、トルクセンサの検出信号によりシャフトに付与されたトルクを測定する測定部の一例を示す回路図である。
本実施の形態では、シャフト100として、クロム鋼(SCr)又はクロムモリブデン鋼(SCM)からなる軸材に、浸炭焼入れ焼戻し処理を施した後に、ショットピーニングを施したものを用いる。
以上説明したように、本実施の形態に係るシャフト100の製造方法では、クロム鋼又はクロムモリブデン鋼からなる軸材に、浸炭焼入れ焼戻し処理を施す熱処理工程と、少なくとも熱処理工程後の軸材のセンサ部が取り付けられる位置に、ショットピーニングを施すショットピーニング工程と、を備え、ショットピーニング工程において、粒径0.6mm以上かつHRC60以上のショット材を用い、噴射圧力を0.4MPa以上、噴射時間を2分以上としている。
次に、以上説明した実施の形態から把握される技術思想について、実施の形態における符号等を援用して記載する。ただし、以下の記載における各符号等は、特許請求の範囲における構成要素を実施の形態に具体的に示した部材等に限定するものではない。
2…センサ部
3…検出コイル
21…コイル
22…磁性体リング
23…ボビン
100…シャフト(磁歪式トルクセンサ用シャフト)
Claims (8)
- −40℃以上150℃以下の温度域下において、4mV/Nm以上のセンサ感度、かつ3%FS以下のヒステリシス誤差が要求される磁歪式トルクセンサのセンサ部が取り付けられる磁歪式トルクセンサ用シャフトの製造方法であって、
クロム鋼又はクロムモリブデン鋼からなる軸材に、浸炭焼入れ焼戻し処理を施す熱処理工程と、
少なくとも前記熱処理工程後の軸材の前記センサ部が取り付けられる位置に、ショットピーニングを施すショットピーニング工程と、を備え、
前記ショットピーニング工程では、粒径0.6mm以上0.8mm以下かつロックウェル硬さ60以上のショット材を用い、噴射圧力を0.4MPa以上0.6MPa以下、噴射時間を2分以上とする、
磁歪式トルクセンサ用シャフトの製造方法。 - 前記ショットピーニング工程では、噴射圧力0.4MPa以上0.55MPa未満でかつ噴射時間を5分以上とする、
請求項1に記載の磁歪式トルクセンサ用シャフトの製造方法。 - 前記ショットピーニング工程では、噴射圧力0.4MPa以上0.55MPa未満でかつ噴射時間を10分以上とする、
請求項1に記載の磁歪式トルクセンサ用シャフトの製造方法。 - 前記ショットピーニング工程では、噴射圧力0.55MPa以上でかつ噴射時間を2分以上とする、
請求項1に記載の磁歪式トルクセンサ用シャフトの製造方法。 - 前記軸材がクロム鋼からなる、
請求項2乃至4の何れか1項に記載の磁歪式トルクセンサ用シャフトの製造方法。 - 前記熱処理工程では、該熱処理工程後の軸材の硬度がロックウェル硬さ58以上となるように熱処理を行う、
請求項1乃至5の何れか1項に記載の磁歪式トルクセンサ用シャフトの製造方法。 - 前記磁歪式トルクセンサ用シャフトのマルテンサイト(200)及びマルテンサイト(211)のX線回折強度のピーク値が、前記ショットピーニング工程を行う前のピーク値の1.15倍以上となっている、
請求項1乃至6の何れか1項に記載の磁歪式トルクセンサ用シャフトの製造方法。 - 前記ショットピーニング工程を行う前は、前記磁歪式トルクセンサ用シャフトのオーステナイト(200)のX線回折強度のピーク値が、マルテンサイト(200)のピーク値よりも大きく、
前記ショットピーニング工程を行った後は、前記磁歪式トルクセンサ用シャフトのオーステナイト(200)のX線回折強度のピーク値が、マルテンサイト(200)のピーク値よりも小さくなる、
請求項1乃至7の何れか1項に記載の磁歪式トルクセンサ用シャフトの製造方法。
Priority Applications (4)
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JP2017002547A JP6740908B2 (ja) | 2017-01-11 | 2017-01-11 | 磁歪式トルクセンサ用シャフトの製造方法 |
US15/854,102 US11866798B2 (en) | 2017-01-11 | 2017-12-26 | Method for manufacturing magnetostrictive torque sensor shaft |
DE102017131360.5A DE102017131360A1 (de) | 2017-01-11 | 2017-12-28 | Verfahren zum herstellen einer magnetostriktiven drehmomentsensorwelle |
CN201810024073.2A CN108303203B (zh) | 2017-01-11 | 2018-01-10 | 磁致伸缩式扭矩传感器用轴的制造方法 |
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JP2017002547A JP6740908B2 (ja) | 2017-01-11 | 2017-01-11 | 磁歪式トルクセンサ用シャフトの製造方法 |
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JP6740908B2 true JP6740908B2 (ja) | 2020-08-19 |
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US (1) | US11866798B2 (ja) |
JP (1) | JP6740908B2 (ja) |
CN (1) | CN108303203B (ja) |
DE (1) | DE102017131360A1 (ja) |
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JP6740908B2 (ja) | 2017-01-11 | 2020-08-19 | 日立金属株式会社 | 磁歪式トルクセンサ用シャフトの製造方法 |
JP7173697B2 (ja) * | 2018-12-20 | 2022-11-16 | 日立金属株式会社 | 磁歪式トルクセンサ用シャフトの製造方法 |
JP7008616B2 (ja) * | 2018-12-20 | 2022-01-25 | 日立金属株式会社 | 磁歪式トルクセンサ用シャフトの製造方法 |
JP7083374B2 (ja) * | 2020-07-03 | 2022-06-10 | シナノケンシ株式会社 | トルク検出センサ |
JP6880469B2 (ja) * | 2020-07-03 | 2021-06-02 | 日立金属株式会社 | 磁歪式トルクセンサ用シャフトの製造方法 |
JP7076505B2 (ja) * | 2020-07-17 | 2022-05-27 | シナノケンシ株式会社 | トルク検出センサ用コア及びトルク検出センサ |
JP2022019090A (ja) * | 2020-07-17 | 2022-01-27 | シナノケンシ株式会社 | トルク検出センサ |
JP7509703B2 (ja) | 2021-01-29 | 2024-07-02 | 株式会社プロテリアル | 磁歪式トルクセンサ及び磁歪式トルクセンサ用磁性リングの厚さの設計方法 |
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JP6740908B2 (ja) | 2017-01-11 | 2020-08-19 | 日立金属株式会社 | 磁歪式トルクセンサ用シャフトの製造方法 |
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- 2017-01-11 JP JP2017002547A patent/JP6740908B2/ja active Active
- 2017-12-26 US US15/854,102 patent/US11866798B2/en active Active
- 2017-12-28 DE DE102017131360.5A patent/DE102017131360A1/de active Pending
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2018
- 2018-01-10 CN CN201810024073.2A patent/CN108303203B/zh active Active
Also Published As
Publication number | Publication date |
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JP2018112451A (ja) | 2018-07-19 |
CN108303203A (zh) | 2018-07-20 |
DE102017131360A1 (de) | 2018-07-12 |
CN108303203B (zh) | 2022-03-01 |
US11866798B2 (en) | 2024-01-09 |
US20180195142A1 (en) | 2018-07-12 |
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