EP2837469A1 - Werkzeug zum Entfernen eines Servohorns mit Keilwellenkupplung - Google Patents

Werkzeug zum Entfernen eines Servohorns mit Keilwellenkupplung Download PDF

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Publication number
EP2837469A1
EP2837469A1 EP13180740.6A EP13180740A EP2837469A1 EP 2837469 A1 EP2837469 A1 EP 2837469A1 EP 13180740 A EP13180740 A EP 13180740A EP 2837469 A1 EP2837469 A1 EP 2837469A1
Authority
EP
European Patent Office
Prior art keywords
servo
lifting
lifting portion
servo horn
horn
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.)
Granted
Application number
EP13180740.6A
Other languages
English (en)
French (fr)
Other versions
EP2837469B1 (de
Inventor
Bing Cheng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Model Research International Co Ltd
Original Assignee
Model Research International 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
Priority to RS20180937A priority Critical patent/RS57560B1/sr
Priority to EP13180740.6A priority patent/EP2837469B1/de
Priority to DK13180740.6T priority patent/DK2837469T3/en
Priority to PT131807406T priority patent/PT2837469T/pt
Application filed by Model Research International Co Ltd filed Critical Model Research International Co Ltd
Priority to TR2018/07458T priority patent/TR201807458T4/tr
Priority to PL13180740T priority patent/PL2837469T3/pl
Priority to HUE13180740A priority patent/HUE039564T2/hu
Priority to ES13180740.6T priority patent/ES2675731T3/es
Priority to SI201331135T priority patent/SI2837469T1/sl
Publication of EP2837469A1 publication Critical patent/EP2837469A1/de
Application granted granted Critical
Publication of EP2837469B1 publication Critical patent/EP2837469B1/de
Priority to HRP20181244TT priority patent/HRP20181244T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same

Definitions

  • the present invention relates to the removal of servo horns used in radio control models, and more particularly to a device for the removal of machining parts coupled by spline shafts such as servos with servo horns.
  • Fig. 1 shows the joining structure of a conventional servo 10 and its servo horn 11.
  • the servo horn 11 has an extended arm with an inner spline 111 inside of the connecting boss and an opening 112 in the center of the inner spline 111.
  • An outer spline shaft 12 is an extended integration of a shaft portion 121 with the outer spline 122 to match the inner spline 111.
  • a screw 13 is tightened into a threaded hole 123 to secure the servo horn 11 to the outer spline shaft 12. Then servo horn 11 is engaged to the outer spline shaft 12 securely.
  • the output torque of the servo 10 is carried out by the engagement of the outer spline shaft 12 and the servo horn 11.
  • the outer spline shaft 12 and the servo horn 11 are normally made of metal to obtain the maximum strength of the engagement and also improve the output torque.
  • the requirement of tight-fit of spline coupling also makes it hard to separate the servo horn 11 and the outer spline shaft 12.
  • the primary object of the present invention is to provide a device for the removal of a metal servo horn, which has inner splines mounted on the outer splines of the servo output gear.
  • the present invention comprises an open end and a close end with several drilled or tapped holes on the bottom plate and drilled hole on the upper plate of the open end for fasteners to clamp the servo horn.
  • the lifting force created by the counter-clockwise rotation of the screw when the screw hits against the lower surface of the upper plate, applied on the lower plate of the front open end will separate the servo horn from the servo output shaft effectively when the clamping mechanism integrates the present invention and servo horn into one unit.
  • This clamping force is necessary when the separating force of servo horn and servo output shaft required is much greater than the rigidity of the present invention formed by the open and close ends.
  • a device for servo horn removal tool in accordance with the present invention comprises a lifting member 30 and two fastening members 50 and is used to remove the servo horn 21 from the servo 20.
  • the servo 20 comprises an outer spline shaft 22 engages with the inner spline 111 of the servo horn 21, which is secured by a screw 23.
  • the servo horn 21 is one end thereof with a connecting boss 211.
  • a perpendicular direction of the connecting boss 211 is defined as an axial direction X.
  • the connecting boss 211 is formed with an inner spline 213 (in the form of an internal spline gear) and an opening 214 in the bottom of the inner spline 213.
  • the output shaft 221 of the outer spline shaft 22 is integrated with the servo 20.
  • the outer spline shaft 22 engages with the inner spline 213 of the servo horn 21.
  • the output shaft 221 has a threaded hole 223 which aligns with the opening 214 of the servo horn 21.
  • the screw 23 includes a head portion 231 and a body 232. The body 232 of the screw 23 goes through the opening 214 of the servo horn 21 and turns into the threaded hole 223 of the outer spline shaft 22.
  • the lifting member 30, as shown in Figs. 2 and 3 includes an open end 301 and a closed end 302.
  • the close end 302 extends toward the open end 301 to form an active-lifting portion 31 and a passive-lifting portion 32.
  • the active-lifting portion 31 is formed as the upper plate of the open end 301 with an elongated hole 311 and concave area 314, and the passive-lifting portion 32 is formed as the lower plate of the open end 301 with an arc 321 under the elongated hole 311.
  • a space 33 is formed between the passive-lifting portion 32 and the active-lifting portion 31 for holding of the assembling portion 212 of the servo horn 21.
  • the head portion 231 of the screw 23 is coincident closely with the lower edge of the elongated hole 311 of the active-lifting section 31.
  • the lower edge of the elongated hole 311 of the active-lifting portion 31 provides a concave 314 for seating the head portion 231 of the screw 23.
  • the servo horn 21 fits between the space 33 and is integrated with the active-lifting portion 31 and the passive-lifting portion 32 when it is clamped.
  • the fastening members 50 include a bolt 51 and a nut 52.
  • Two positioning holes 312 in both ends of the active-lifting portion 31 are aligned with two positioning holes 322 of the passive-lifting portion 32.
  • the bolts 51 and the nuts 52 combine the active-lifting portion 31, the passive-lifting portion 32 and the servo horn 21 into one integrated unit when they are tightened so there is no gap between these three members.
  • the closed end 302 provides the transmitting power during lifting process, which is executed by the lower surface of the active-lifting portion 31 and upper surface around the edge of arc 321 against the upper surface and lower surfaces of the servo horn 21, respectively.
  • the integration of the lifting member 30 and the servo horn 21 is then achieved.
  • the servo horn 21 of the servo 20 is lifted upward and separated from the outer spline shaft 22 to avoid the damage to the servo horn 21 and servo 20 Furthermore, with the lifting force ⁇ produced by the rotating force F, the servo horn 21 can be easily separated from the outer spline shaft 22 in an efficient way simply by rotating the screw 23 counter clockwise. Besides, the assembling portion 212 of the servo horn 21 can be different shapes to meet with different applications. As shown in Fig.
  • the servo horn 21 has the form of a rotating arm, and the assembling portion 212 has an elongated planar structure. Also as shown in Fig. 9 , the servo horn 21 has a disc shape and the assembling portion 212 is also disc-shaped.
  • Gaskets 40 are necessary when there is a gap between the servo horn 21, the active- lifting portion 31 and the passive-lifting portion 32. Insertion of proper thickness of gaskets 40 must be done before tightening two fastening members 50 to clamp the servo horn 21 and the lifting member 30 together to avoid the distortion of the lifting member 30 at the opening end when the lifting force is greater than the rigidity of the lifting member 30. Gaskets 40 can be fixed by any holes provided by the lifting member 30 and fastening members 50.
  • the body portions 42 of the respective gaskets 40 are disposed between the active-lifting portion 31 of the lifting member 30 and the assembling portion 212 of the servo horn 21 by through holes 41.
  • the respective gaskets 40 are aligned with the positioning holes 312, 322 and the fixing holes 313, 323 of the lifting member 30, respectively.
  • the fastening members 50 go through the positioning holes 312, 322 of the lifting member 30 and one of the through holes 41 of the respective gaskets 40 to fix the lifting member 30.
  • two pivot members 60 are inserted through the fixing holes 313, 323 of the lifting member 30 and another through holes 41 of the respective gaskets 40.
  • the pivot member 60 comprises a bolt 61 and a nut 62.
  • the closed end 302 is not only acting as the connecting bend for the active-lifting portion 31 and the passive-lifting portion 32 but also provides the solidly-formed clamping area when the servo horn 21 is seated on the upper edge of the arc 324. It eliminates the fasteners like the fastening members 50 when the servo horn 21 is clamped between the active-lifting portion 31 and the passive-lifting portion 32 with or without gasket 40.
  • the elongated hole 311 of the active-lifting portion 31 is to receive the screw 23 when the lifting force is created during counter clockwise rotation of the screw 23.
  • Fig. 12 shows the simplified version of the lifting member 30.
  • the lifting member 30 has an open end 303 in one side and the second closed end 304 in the opposite side.
  • the function of the second closed end 304 is the same as closed end 302 so one fastening member 50 can be eliminated.
  • One fastening member 50 in the opposite side of the second closed end 304 can provide clamping force with the rigidity of the second closed end 304 when the servo horn 21 is clamped.
  • the second closed end 304 of the lifting member 30 is formed by a sleeve 35 which is clamped between the active-lifting portion 31 and the passive-lifting section 32 by a fastening member 50.
  • the sleeve 35 has a central hole 351 aligned with the positioning holes 312, 322 of the lifting member 30 on closed end 304 then bolt 51 of the fastening member 50 can go through the sleeve 35 and tighten the active-lifting portion 31 and the passive-lifting portion 32 with the nut 52 to form a solid closed-end structure.
  • the result is the same as Fig. 13 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Manipulator (AREA)
  • Turning (AREA)
  • Automatic Assembly (AREA)
EP13180740.6A 2013-08-16 2013-08-16 Werkzeug zum Entfernen eines Servohorns mit Keilwellenkupplung Active EP2837469B1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DK13180740.6T DK2837469T3 (en) 2013-08-16 2013-08-16 REMOVAL EQUIPMENT FOR SERVOHORN WITH NOTACLE CLUTCH
PT131807406T PT2837469T (pt) 2013-08-16 2013-08-16 Ferramenta de remoção de chifre de servo com acoplamento de eixo estriado
ES13180740.6T ES2675731T3 (es) 2013-08-16 2013-08-16 Herramienta de extracción para sacar un mando del servo metálico de un eje acanalado por el exterior de un servo
TR2018/07458T TR201807458T4 (tr) 2013-08-16 2013-08-16 Yivli mil bağlantısı ile yardımcı boruya yönelik sökme aleti.
EP13180740.6A EP2837469B1 (de) 2013-08-16 2013-08-16 Werkzeug zum Entfernen eines Servohorns mit Keilwellenkupplung
HUE13180740A HUE039564T2 (hu) 2013-08-16 2013-08-16 Eltávolító szerszám bojtárhajtás bordástengely illesztésû kihajtókarjához
RS20180937A RS57560B1 (sr) 2013-08-16 2013-08-16 Alat za skidanje poluge serva iz spoja sa ožljebljenim vratilom
SI201331135T SI2837469T1 (sl) 2013-08-16 2013-08-16 Odstranjevalno orodje za servo rog, ki je sklopljen na način z utorno gredjo
PL13180740T PL2837469T3 (pl) 2013-08-16 2013-08-16 Narzędzie do demontażu orczyków serwa ze złączem wielowypustowym
HRP20181244TT HRP20181244T1 (hr) 2013-08-16 2018-08-03 Alat za uklanjanje servo roga sa spojke žlijebljene osovine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13180740.6A EP2837469B1 (de) 2013-08-16 2013-08-16 Werkzeug zum Entfernen eines Servohorns mit Keilwellenkupplung

Publications (2)

Publication Number Publication Date
EP2837469A1 true EP2837469A1 (de) 2015-02-18
EP2837469B1 EP2837469B1 (de) 2018-05-16

Family

ID=49028902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13180740.6A Active EP2837469B1 (de) 2013-08-16 2013-08-16 Werkzeug zum Entfernen eines Servohorns mit Keilwellenkupplung

Country Status (10)

Country Link
EP (1) EP2837469B1 (de)
DK (1) DK2837469T3 (de)
ES (1) ES2675731T3 (de)
HR (1) HRP20181244T1 (de)
HU (1) HUE039564T2 (de)
PL (1) PL2837469T3 (de)
PT (1) PT2837469T (de)
RS (1) RS57560B1 (de)
SI (1) SI2837469T1 (de)
TR (1) TR201807458T4 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114321195A (zh) * 2021-12-30 2022-04-12 中国航空工业集团公司金城南京机电液压工程研究中心 一种可固定输出花键的装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107627259B (zh) * 2017-10-25 2019-08-09 北京航天发射技术研究所 机液伺服位置自适应对中装置及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177851A (en) * 1992-01-08 1993-01-12 Mike Skoworodko Puller for brake slack adjuster
US5369863A (en) * 1993-10-18 1994-12-06 Snap-On Incorporated Bicycle crank arm puller
US20070067985A1 (en) * 2005-09-15 2007-03-29 Lifu Bicycle Co., Ltd. Structural improvement of chain wheel dismounting kit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177851A (en) * 1992-01-08 1993-01-12 Mike Skoworodko Puller for brake slack adjuster
US5369863A (en) * 1993-10-18 1994-12-06 Snap-On Incorporated Bicycle crank arm puller
US20070067985A1 (en) * 2005-09-15 2007-03-29 Lifu Bicycle Co., Ltd. Structural improvement of chain wheel dismounting kit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114321195A (zh) * 2021-12-30 2022-04-12 中国航空工业集团公司金城南京机电液压工程研究中心 一种可固定输出花键的装置
CN114321195B (zh) * 2021-12-30 2023-07-21 中国航空工业集团公司金城南京机电液压工程研究中心 一种可固定输出花键的装置

Also Published As

Publication number Publication date
HRP20181244T1 (hr) 2018-10-05
RS57560B1 (sr) 2018-10-31
EP2837469B1 (de) 2018-05-16
ES2675731T3 (es) 2018-07-12
SI2837469T1 (sl) 2018-10-30
DK2837469T3 (en) 2018-08-27
TR201807458T4 (tr) 2018-06-21
PT2837469T (pt) 2018-07-12
PL2837469T3 (pl) 2018-10-31
HUE039564T2 (hu) 2019-01-28

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