WO2016079997A1 - Shaft diameter enlarging apparatus and shaft diameter enlarging method - Google Patents

Shaft diameter enlarging apparatus and shaft diameter enlarging method Download PDF

Info

Publication number
WO2016079997A1
WO2016079997A1 PCT/JP2015/005810 JP2015005810W WO2016079997A1 WO 2016079997 A1 WO2016079997 A1 WO 2016079997A1 JP 2015005810 W JP2015005810 W JP 2015005810W WO 2016079997 A1 WO2016079997 A1 WO 2016079997A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
intermediate portion
diameter
axial direction
outer diameter
Prior art date
Application number
PCT/JP2015/005810
Other languages
English (en)
French (fr)
Inventor
Mitsuhiro Okamoto
Fumiaki Ikuta
Yoshitaka Kuwahara
Kazuki Mori
Original Assignee
Neturen Co., Ltd.
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 Neturen Co., Ltd. filed Critical Neturen Co., Ltd.
Priority to CN201580063423.0A priority Critical patent/CN107000029B/zh
Priority to MX2017006414A priority patent/MX2017006414A/es
Publication of WO2016079997A1 publication Critical patent/WO2016079997A1/en

Links

Images

Classifications

    • 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
    • B21J5/08—Upsetting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section

Definitions

  • the present invention relates to a shaft diameter enlarging apparatus and a shaft diameter enlarging method.
  • a shaft diameter enlargement is a method for forming a relatively diameter enlarged portion in an intermediate portion of a shaft.
  • a shaft is partially enlarged by rotating the shaft with a bending angle being applied in a state in which pressure for compressing the shaft in the axial direction is applied to both ends of the shaft, whereby a diameter enlarged portion is formed.
  • a shaft diameter enlarging apparatus performing the diameter enlargement generally includes a driving side holder unit and a driven side holder unit that respectively include sleeves for holding ends of a shaft and are disposed along a reference line on which the shaft is disposed, and enlarges a portion of the shaft by rotating the driving side holder unit inclined at an angle with respect to the reference line while compressing the shaft in the axial direction by moving the driven side holder unit along the reference line. Then, when a distance between the sleeves of the driving side holder unit and the driven side holder unit has become a prescribed distance, the compression is stopped, and a diameter enlarging process for enlarging a portion of the shaft is terminated.
  • a distance between the sleeves is typically detected indirectly on the basis of a moving distance of the driven side holder unit.
  • the sleeves may be thermally expanded in some cases because the temperature of the sleeves is gradually increased due to heat generation caused in the shaft by, for example, plastic deformation when the diameter enlargement is repeatedly performed. If the sleeves are thermally expanded, the distance between the sleeves indirectly detected on the basis of the moving distance of the driven side holder unit is changed, and if the diameter enlarging process is controlled on the basis of the distance between the sleeves, the dimensional accuracy of a diameter enlarged portion of a product may be degraded.
  • the outer diameter of a shaft can be measured, for example, by using a noncontact type distance meter, and this type of distance meter typically uses laser light or ultrasonic waves.
  • a lubricant is generally applied to the surface of a shaft, and therefore, there is a possibility that the lubricant may disturb the reflection of laser light or ultrasonic waves to lower the detection accuracy of the outer diameter of the intermediate portion of the shaft.
  • the detection accuracy may be lowered also by the ambient temperature or the like. As a result, the dimensional accuracy of a diameter enlarged portion of a product may be lowered.
  • An object of the present invention is to improve processing accuracy in the diameter enlargement.
  • a shaft diameter enlarging apparatus includes a presser configured to apply pressure to both ends of a shaft to compress the shaft in an axial direction, a load generator configured to apply alternating load in a direction intersecting the axial direction to an intermediate portion of the shaft, a detector configured to detect an outer diameter of the intermediate portion of the shaft being enlarged, along with a compression in the axial direction, through the application of the pressure by the presser and the alternating load by the load generator, and a controller configured to control the presser and the load generator.
  • the detector includes a contact element arranged to contact an outer peripheral surface of the intermediate portion of the shaft, and is configured to detect the outer diameter of the intermediate portion based on a displacement of the contact element.
  • the controller is configured to adjust the pressure applied by the presser and to stop the compression of the intermediate portion of the shaft, based on the outer diameter detected by the detector.
  • Fig. 1 is a diagram illustrating an example of a structure of a shaft diameter enlarging apparatus according to an embodiment of the present invention.
  • Fig. 2A is a diagram illustrating an example of a shaft diameter enlarging method performed by using the shaft diameter enlarging apparatus of Fig. 1.
  • Fig. 2B is another diagram illustrating the shaft diameter enlarging method shown in Fig. 2A.
  • Fig. 2C is another diagram illustrating the shaft diameter enlarging method shown in Figs. 2A and 2B.
  • Fig. 2D is another diagram illustrating the shaft diameter enlarging method shown in Figs. 2A to 2C.
  • Fig. 2E is another diagram illustrating the shaft diameter enlarging method shown in Figs.
  • Fig. 3 is a diagram illustrating an example of a structure of a detector of the shaft diameter enlarging apparatus of Fig. 1.
  • Fig. 4 is a diagram illustrating a structure of a modification of the shaft diameter enlarging apparatus of Fig. 1.
  • Fig. 5A is a diagram illustrating another example of a shaft diameter enlarging method according to an embodiment of the present invention.
  • Fig. 5B is another diagram illustrating the shaft diameter enlarging method shown in Fig. 5A.
  • Fig. 5C is another diagram illustrating the shaft diameter enlarging method shown in Figs. 5A and 5B.
  • FIG. 6A is a diagram illustrating another example of a shaft diameter enlarging method according to an embodiment of the present invention.
  • Fig. 6B is another diagram illustrating the shaft diameter enlarging method shown in Fig. 6A.
  • Fig. 7A is a diagram illustrating another example of a shaft diameter enlarging method according to an embodiment of the present invention.
  • Fig. 7B is another diagram illustrating the shaft diameter enlarging method shown in Fig. 7A.
  • Fig. 8A is a diagram illustrating another example of a shaft diameter enlarging method according to an embodiment of the present invention.
  • Fig. 8B is another diagram illustrating the shaft diameter enlarging method shown in Fig. 8A.
  • Fig. 9 is a graph illustrating a variation in an outer diameter of a diameter enlarged portion of products obtained in experiment examples.
  • Fig. 10 is a graph illustrating a variation in an outer diameter of a diameter enlarged portion of products obtained in experiment examples
  • Fig. 1 illustrates an example of the structure of a shaft diameter enlarging apparatus for describing an embodiment of the present invention.
  • the shaft diameter enlarging apparatus of Fig. 1 enlarges an intermediate portion of a shaft W by rotating the shaft W with a bending angle being applied in a state in which pressure for compressing the shaft W in the axial direction is applied to both ends of the shaft W.
  • the holder unit 1 includes a sleeve 10 into which the end of the shaft W is inserted, and an ejection rod 11 for receiving the end of the shaft W inserted into the sleeve 10.
  • the holder unit 2 has a similar structure, and includes a sleeve 12 and an ejection rod 13.
  • the shaft W is supported by the ejection rod 11 of the holder unit 1 at one end and by the ejection rod 13 of the holder unit 2 at the other end so as to be held between the holder units 1, 2.
  • the intermediate portion of the shaft W positioned between the holder units 1, 2 is enlarged through the diameter enlargement so as to be formed into a diameter enlarged portion of a product.
  • a length D along the axial direction of the intermediate portion of the shaft W before the processing is appropriately determined in accordance with the thickness and the outer diameter of the diameter enlarged portion.
  • the presser 3 moves the holder unit 2 along the reference line A in a parallel manner, and applies the pressure to both the ends of the shaft W to compress the shaft W in the axial direction via the holder units 1, 2.
  • the load generator 4 provides the bending angle to the shaft W by inclining the holder unit 1 so that the rotation axis of the holder unit 1 can obliquely cross the reference line A. Then, the load generator 4 rotates the holder unit 1 around the inclined rotation axis of the holder unit 1, so that the alternating load in the direction intersecting the axial direction of the shaft W can be applied to the intermediate portion of the shaft W.
  • the detector 5 detects the outer diameter of the intermediate portion of the shaft W positioned between the holder units 1, 2.
  • the detector 5 includes a contact element 14 in contact with an outer peripheral surface of a part, disposed on the side of the holder unit 1, of the intermediate portion of the shaft W, so as to detect the outer diameter of the intermediate portion of the shaft W by utilizing the displacement of the contact element 14.
  • Figs. 2A to 2E illustrate a shaft diameter enlarging method performed by using the above-described shaft diameter enlarging apparatus.
  • the shaft W is held between the holder units 1, 2.
  • the shaft W held between the holder units 1, 2 is bent at a flexural center O lying on the reference line A, and is rotated around the axis of the shaft W. Through the bend and the rotation of the shaft W, the alternating load is applied, inside and outside the bending direction, to the intermediate portion of the bent shaft W in the direction intersecting the axial direction of the shaft W.
  • the intermediate portion of the compressed shaft W bulges on the inner side of the bending direction due to the plastic flow. Then, in accordance with the rotation of the shaft W about the axis, the bulging caused by the plastic flow grows over the entire circumference, and thus, the intermediate portion of the shaft W is enlarged.
  • the outer diameter of the intermediate portion of the shaft W is continuously detected by the detector 5.
  • the controller 6 detects, on the basis of an output signal of the detector 5, that the outer diameter of the intermediate portion of the shaft W has reached the prescribed diameter. Then, the controller 6 (see Fig. 1) adjusts the pressure applied by the presser 3 so as to stop the compression of the shaft W. Thus, the diameter enlarging process for enlarging the intermediate portion of the shaft W is completed.
  • a prescribed forming pressure is subsequently applied by the presser 3. Then, the holder unit 1 is disposed along the reference line A again by the load generator 4 so as to unbend the shaft W. By unbending the shaft W, the thickness of the enlarged intermediate portion of the shaft W is leveled over the entire circumference.
  • a distance between an end surface 10a of the sleeve 10 and an end surface 12a of the sleeve 12 holding the intermediate portion of the shaft W in the axial direction is constant along the radial direction, and the intermediate portion of the shaft W is formed into a substantially disk shape having uniform thickness.
  • a lubricant is applied to the surface of the shaft W before the diameter enlargement. If a lubricant is applied to the surface of the shaft W, a frictional force working between the shaft W and the sleeves 10, 12 is reduced, so as to inhibit the product P from adhering to the sleeves 10, 12 and to inhibit the product P from being damaged when taken out. As a result, the workability in taking out the product P and the quality of the product P can be improved.
  • the detector 5 for detecting the outer diameter of the intermediate portion of the shaft W includes the contact element 14 in contact with the outer peripheral surface of the intermediate portion of the shaft W, and detects the outer diameter of the intermediate portion of the shaft W by utilizing the displacement of the contact element element 14. Since the detection is made by utilizing the displacement of the contact element element 14 in contact with the outer peripheral surface of the intermediate portion of the shaft W, the influence of the lubricant applied to the surface of the shaft W, the ambient temperature and the like can be reduced, so as to improve the detection accuracy.
  • Fig. 3 illustrates an example of the structure of the detector 5 including the contact element 14.
  • the detector 5 includes the contact element 14, a support 15 and a measuring section 16.
  • the contact element 14 is formed in the shape of a bar, and is in contact with the outer peripheral surface of the intermediate portion of the shaft W at a tip 14a thereof.
  • the support 15 supports the contact element 14 swingably around a rotation axis 17 in parallel to the reference line A.
  • the support 15 is appropriately fixed on a non-rotating portion of the holder unit 1 via a fixing member 18.
  • the contact element 14 swings around the rotation axis 17 to displace the tip 14a, and hence, a base 14b of the contact element 14 positioned on the opposite side of the rotation axis 17 is also displaced.
  • the measuring section 16 measures the amount of the displacement of the base 14b of the contact element 14.
  • a dial gauge is used as the measuring section 16, and the amount of the displacement of the base 14b of the contact element 14 is measured on the basis of vertical movement of a gauge head 19 in contact with the base of the contact element 14.
  • the displacement of the base 14b of the contact element 14 may be measured by using a noncontact type displacement sensor such as a laser displacement sensor or an ultrasonic displacement sensor, but a contact type displacement sensor such as the dial gauge as in the illustrated example is preferably used, and thus, the ambient influence such as the temperature can be reduced so as to improve the detection accuracy for the outer diameter of the intermediate portion of the shaft W.
  • a noncontact type displacement sensor such as a laser displacement sensor or an ultrasonic displacement sensor
  • a contact type displacement sensor such as the dial gauge as in the illustrated example is preferably used, and thus, the ambient influence such as the temperature can be reduced so as to improve the detection accuracy for the outer diameter of the intermediate portion of the shaft W.
  • the thickness of the diameter enlarged portion Pa of the product P is reduced.
  • the volume of the intermediate portion of the shaft W to be enlarged is substantially constant regardless of the thermal expansion of the sleeves 10, 12, and hence, the diameter enlarged portion Pa obtained by enlarging the intermediate portion of the shaft W is enlarged in the diameter with the thickness reduced.
  • Fig. 4 illustrates a modified structure of the shaft diameter enlarging apparatus.
  • a distance between an end surface 10a of a sleeve 10 and an end surface 12a of a sleeve 12 holding an intermediate portion of a shaft W in the axial direction becomes smaller toward a radially outer side of the end surfaces 10a, 12a.
  • a diameter enlarged portion Pa of a product P obtained by enlarging the intermediate portion of the shaft W restrained between the end surfaces 10a, 12a is into a shape that is tapered toward a radially outer side of the intermediate portion.
  • the diameter enlargement is further facilitated along with the thickness of the diameter enlarged portion Pa being reduced. Therefore, it is particularly suitable to stop the compression based on the enlarging outer diameter of the intermediate portion of the shaft W, and thus, the dimensional accuracy of the outer diameter of the diameter enlarged portion Pa can be stably ensured even when the diameter enlargement is repeatedly performed.
  • alternating load is applied to the intermediate portion of the shaft W by applying bending or twist vibration to the shaft W by a vibration generator OSC.
  • the dimensional accuracy of the outer diameter of the diameter enlarged portion Pa can be stably ensured by stopping the compression of the shaft W on the basis of the outer diameter of the intermediate portion of the shaft W to be enlarged.
  • Figs. 9 and 10 illustrate variation in the outer diameter of the diameter enlarged portion Pa of the product P obtained by repeatedly performing the diameter enlargement by using the shaft diameter enlarging apparatus of Fig. 1.
  • a shaft diameter enlarging method disclosed herein includes applying a pressure to both ends of a shaft to compress the shaft in an axial direction and applying alternating load in a direction intersecting the axial direction to an intermediate portion of the shaft, thereby enlarging, along with a compression in the axial direction, the intermediate portion of the shaft, detecting an outer diameter of the intermediate portion of the shaft based on a displacement of a contact element contacting an outer peripheral surface of the intermediate portion of the shaft, and adjusting the pressure applied to the both ends of the shaft and stopping the compression of the intermediate portion of the shaft, based on the detected outer diameter of the intermediate portion.
  • the shaft diameter enlarging method may further include holding the intermediate portion of the shaft in the axial direction between a pair of restraining members to enlarge the intermediate portion of the shaft so as to be tapered toward a radially outer side of the intermediate portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Automatic Assembly (AREA)
PCT/JP2015/005810 2014-11-20 2015-11-20 Shaft diameter enlarging apparatus and shaft diameter enlarging method WO2016079997A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580063423.0A CN107000029B (zh) 2014-11-20 2015-11-20 轴径增大装置和轴径增大方法
MX2017006414A MX2017006414A (es) 2014-11-20 2015-11-20 Aparato para agrandar el diametro de flecha y metodo para agrandar el diametro de flecha.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014235364A JP6463953B2 (ja) 2014-11-20 2014-11-20 軸肥大加工機及び軸肥大加工方法
JP2014-235364 2014-11-20

Publications (1)

Publication Number Publication Date
WO2016079997A1 true WO2016079997A1 (en) 2016-05-26

Family

ID=54844016

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/005810 WO2016079997A1 (en) 2014-11-20 2015-11-20 Shaft diameter enlarging apparatus and shaft diameter enlarging method

Country Status (4)

Country Link
JP (1) JP6463953B2 (ja)
CN (1) CN107000029B (ja)
MX (1) MX2017006414A (ja)
WO (1) WO2016079997A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019088153A1 (en) * 2017-11-01 2019-05-09 Neturen Co., Ltd. Shaft diameter enlargement condition setting method, shaft diameter enlargement method and shaft diameter enlargement apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001885A1 (en) * 1984-09-21 1986-03-27 Gerhard Staufert Method and device for measuring a workpiece
JP2007268602A (ja) * 2006-03-31 2007-10-18 Komatsu Ltd 軸肥大成形装置および軸肥大成形方法
JP2008212936A (ja) * 2007-02-28 2008-09-18 Iura Co Ltd 軸肥大加工機及びその加工方法
JP2008212937A (ja) * 2007-02-28 2008-09-18 Iura Co Ltd 軸肥大加工方法
JP2009125789A (ja) * 2007-11-27 2009-06-11 Neturen Co Ltd 軸肥大加工装置及びその方法
JP2013169572A (ja) * 2012-02-21 2013-09-02 Neturen Co Ltd 軸肥大加工機の監視システム
DE102012110673A1 (de) * 2012-11-07 2014-05-08 Fritz Studer Ag Werkzeugmaschine und Verfahren zur Vermessung eines Werkstücks

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4585300B2 (ja) * 2004-12-14 2010-11-24 新日本製鐵株式会社 ボンデ処理装置における水洗廃水の再利用方法
JP4879878B2 (ja) * 2005-01-31 2012-02-22 昭和電工株式会社 据え込み加工方法及び据え込み加工装置
JP4879880B2 (ja) * 2005-01-31 2012-02-22 昭和電工株式会社 据え込み加工方法及び据え込み加工装置
CN100368761C (zh) * 2006-03-30 2008-02-13 上海大学 跟踪式圆度和直径在线测量机构
JP5302592B2 (ja) * 2008-07-31 2013-10-02 高周波熱錬株式会社 ワークピースの肥大加工方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001885A1 (en) * 1984-09-21 1986-03-27 Gerhard Staufert Method and device for measuring a workpiece
JP2007268602A (ja) * 2006-03-31 2007-10-18 Komatsu Ltd 軸肥大成形装置および軸肥大成形方法
JP2008212936A (ja) * 2007-02-28 2008-09-18 Iura Co Ltd 軸肥大加工機及びその加工方法
JP2008212937A (ja) * 2007-02-28 2008-09-18 Iura Co Ltd 軸肥大加工方法
JP4927599B2 (ja) 2007-02-28 2012-05-09 株式会社いうら 軸肥大加工機及びその加工方法
JP2009125789A (ja) * 2007-11-27 2009-06-11 Neturen Co Ltd 軸肥大加工装置及びその方法
JP2013169572A (ja) * 2012-02-21 2013-09-02 Neturen Co Ltd 軸肥大加工機の監視システム
DE102012110673A1 (de) * 2012-11-07 2014-05-08 Fritz Studer Ag Werkzeugmaschine und Verfahren zur Vermessung eines Werkstücks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019088153A1 (en) * 2017-11-01 2019-05-09 Neturen Co., Ltd. Shaft diameter enlargement condition setting method, shaft diameter enlargement method and shaft diameter enlargement apparatus
CN111315506A (zh) * 2017-11-01 2020-06-19 高周波热錬株式会社 轴径扩大条件设定方法、轴径扩大方法和轴径扩大设备
CN111315506B (zh) * 2017-11-01 2022-05-10 高周波热錬株式会社 轴径扩大条件设定方法、轴径扩大方法和轴径扩大设备
US11565307B2 (en) 2017-11-01 2023-01-31 Neturen Co., Ltd. Shaft diameter enlargement condition setting method, shaft diameter enlargement method and shaft diameter enlargement apparatus

Also Published As

Publication number Publication date
JP6463953B2 (ja) 2019-02-06
CN107000029A (zh) 2017-08-01
CN107000029B (zh) 2019-12-10
MX2017006414A (es) 2017-09-12
JP2016097423A (ja) 2016-05-30

Similar Documents

Publication Publication Date Title
CN109342189B (zh) 一种拉扭组合多轴断裂实验系统及实验方法
US8683839B2 (en) Internal roller swaging device and method
US8141263B2 (en) Apparatus for measuring an inside diameter of a hole of a workpiece
EP3156786B1 (en) Compression heat-generation detector and method therefor
JP6275859B2 (ja) 力センサを有する超音波加工デバイス
CN104132887B (zh) 弯管成形管材/模具摩擦系数测量装置
US7437263B2 (en) Method and apparatus for controlling the machining of mechanical pieces
WO2016079997A1 (en) Shaft diameter enlarging apparatus and shaft diameter enlarging method
JP4061341B2 (ja) ひずみ制御型超高サイクル疲労試験方法および疲労試験装置
JP6472992B2 (ja) 管継手締付機
US9682413B2 (en) Internal roller swaging device and method
JP2008212936A (ja) 軸肥大加工機及びその加工方法
KR20150029537A (ko) 전동 프레스, 굴곡점 검출방법 및 프로그램
CN208206080U (zh) 一种凸轮轴轴颈加工用在线检测装置
CN103884259B (zh) 一种轴承游隙测量装置
JP6159325B2 (ja) レオメータ内の測定間隙の保持
JP7237123B2 (ja) 軸肥大加工の加工条件設定方法、軸肥大加工方法及び軸肥大加工装置
TWI638153B (zh) 具雙固定端的裝置
US20110132100A1 (en) System and method to test specimens
CN108351265B (zh) 极低扭矩值的测量
JP2009180671A (ja) 円筒内径測定方法及び装置、並びに円筒三次元表示方法及び装置
JP2017144471A (ja) 軸肥大加工方法
CN207515643U (zh) 可检测工件凹槽底端壁厚的外径千分尺
WO2004025214A1 (ja) 管体の形状測定方法および同装置
JP2010127310A (ja) 等速自在継手の検査装置及び検査方法

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: 15808038

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: MX/A/2017/006414

Country of ref document: MX

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15808038

Country of ref document: EP

Kind code of ref document: A1