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WO1998008647A1 - Outil d'insertion d'un circlips pour transmissions automatiques - Google Patents

Outil d'insertion d'un circlips pour transmissions automatiques Download PDF

Info

Publication number
WO1998008647A1
WO1998008647A1 PCT/US1996/013947 US9613947W WO9808647A1 WO 1998008647 A1 WO1998008647 A1 WO 1998008647A1 US 9613947 W US9613947 W US 9613947W WO 9808647 A1 WO9808647 A1 WO 9808647A1
Authority
WO
WIPO (PCT)
Prior art keywords
cross
ridge
snap ring
bar
disc plate
Prior art date
Application number
PCT/US1996/013947
Other languages
English (en)
Inventor
Douglas Hodges
Original Assignee
Douglas Hodges
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 Douglas Hodges filed Critical Douglas Hodges
Priority to AU69609/96A priority Critical patent/AU6960996A/en
Priority to PCT/US1996/013947 priority patent/WO1998008647A1/fr
Publication of WO1998008647A1 publication Critical patent/WO1998008647A1/fr

Links

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
    • B25B27/14—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
    • B25B27/20—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 inserting or withdrawing split pins or circlips
    • 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

Definitions

  • the subject invention relates generally to hand tools and, more particularly, to a snap ring insertion tool for quickly and easily installing and removing snap rings in automatic transmissions such as the Ford E40D transmission .
  • the known tooling provided for installation of the overdrive snap ring in the Ford E40D transmission comprises a number of separate parts which must be laboriously assembled and reassembled three times during the removal and installation process in order to complete the desired operations.
  • the conventional tool includes nine separate pieces, including a large cross-bar, a small cross-bar, a handle, an O-ring, a disc plate, three bolts, and a washer. These parts must be assembled at the outset of the operation and reassembled several times during operation.
  • the center support outer snap ring is first removed by applying downward pressure on the center support piston, allowing the rebuilder to manually remove the outer snap ring.
  • the rebuilder In a separate operation from the first, the rebuilder must disassemble the tool and reassemble it to remove the overdrive snap ring from the center support piston, then again disassemble the tool.
  • the rebuilder must then reassemble the tool to install the overdrive snap ring into the center support piston, then disassemble the tool and place the center support piston down into the transmission casing.
  • the conventional tool must then be reassembled with two other parts in order to install the center support piston, after which the tool is disassembled and all its pieces stored into a container.
  • the tool includes a means for depressing the bevel spring, for depressing the center support piston, and for installing the overdrive snap ring.
  • the means is formed by the peripheral edge structure of a disc plate which may be driven downward by a cooperating actuator mechanism so as to cause automatic depression of the bevel spring and the center support piston.
  • Figure l is a perspective of a preferred embodiment according to the invention.
  • Figure 2 is a bottom view of the disk plate member according to the preferred embodiment ;
  • Figure 3 is a side sectional view of the disk plate member of Figure 2 taken at 3-3 of Figure 2 ;
  • Figure 4 is a top view of the cross-bar member according to the preferred embodiment
  • Figure 5 is a side sectional view taken at 5-5 of Figure 4 ;
  • Figure 6 is a partial side elevational view of the twist T-bar tip according to the preferred embodiment
  • Figure 7 is a side elevational view of a shaft pin according to the preferred embodiment
  • Figure 8 is a partial schematic side sectional view useful in illustrating operation of the preferred embodiment ; and Figure 9 is a partial schematic side sectional view further useful in illustrating operation according to the preferred embodiment
  • FIG. 1 illustrates a snap ring insertion tool according to the preferred embodiment, including a twist T-bar 17 tnreadaoly mounted m a cross-bar or cross-member 13
  • the T-bar 17 has a solid, threaded metal stock shaft 73, a conical tip 75,
  • the cross-bar or cross-member 13 further includes first and second generally rectangular flanges 22, 24 through which are threaded first and second bolts 23, 25 Rectangular beveled surfaces 16, 18 lead from the inner edges of the respective flanges 22, 24 to the rectangular top surface 20 of the cross-bar 13
  • the cross-bar 13 and disc plate 15 may be constructed, for example, of T-6 billet aluminum, while the T-bar 17 and bolts 19, 21 may be mild steel and stainless steel, respectively.
  • the disk plate 15 includes a conical depression 27 for receiving the mating conical tip 75 located at the end of the threaded shaft 73 of the twist T-bar 17.
  • the disk plate 15 includes a peripheral edge structure 28 of uniform cross-section around the entire circumference 30 of the disk plate 15.
  • This peripheral edge structure 28 includes a depending bevel spring depressor ridge 29 of generally rectangular cross-section.
  • the inside vertical linear edge of the depressor ridge 29 leads to a first squared-off depression 31 which, with a second depression 35 of generally rectangular cross-section, defines a snap ring installer ridge 33
  • the snap ring installer ridge 33 is also generally rectangular in cross- section, extending downwardly parallel to the bevel spring depressor ridge 29, but to a considerably lesser extent.
  • the second depression 35 is dimensioned to accept and mate with a cooperating portion of the center support piston of an automatic transmission, as will be described m further detail below m connection with Figure 9.
  • FIGS. 4 and 5 illustrate details of the preferred cross-bar 13.
  • the cross-bar 13 includes a center tapped hole 59 which threadably receives the threaded shaft 73 of the twist T-bar 17, and first and second through holes 55, 57 for slidably receiving the shafts of the shaft pins or shoulder bolts 19, 21.
  • Respective holes 51, 53 are formed in the respective flanges 22, 24. These holes are oblong or elliptical in shape, rather than cylindrical, in order to accommodate the tolerances in the positioning of cooperating bolt holes within the transmission case, as further described below. Appropriate dimensioning permits attaching the cross-bar 13 to as many as three different bolt locations in a transmission case.
  • Hole 51 may be, for example, .674-inch in length L, and .191-inch m width W, while hole 53 may be 1.3 inches m length L and .179-inch in width W.
  • the overall length of the cross-bar 13 may be, for example, 10-3/8 inches, with the center tapped hole 59 being .50- inch in diameter.
  • the distance between the centers of holes 55, 57 may, for example, be 4.111 inches.
  • Figure 6 shows the conical tip 75 at the end of the twist T-bar 17 in further detail.
  • the tip 75 is preferably rotatably mounted in and spins freely with respect to its shaft 76.
  • the shaft 76 may be press-fitted into the shaft 73 or attached by other means such as a spring- loaded ball snap-in mechanism similar to "Snap-OnTM" tools.
  • the tip design will not scar or damage the anod zed aluminum surface of the disk 15, spins freely, and is hardened to prevent wear. Its design further serves to center or register the disk plate 15 into position.
  • Figure 7 shows a further detail of a shaft pin or shoulder bolt, e.g., 19, 21
  • the shoulder bolt includes a hexagonal pin head 81, a pin shaft 83, and a threaded tip 85.
  • the threaded tip may be of a length o , for example, .375-inch.
  • the hexagonal head 81 permits torquing down of the threaded tip into suitable holes in the disk plate 15.
  • the cross-bar 13 sits on the top surface 103 of the inside shoulder 105 of the transmission casing and mounts to the bolt holes which are tapped around the shoulder 105.
  • This mounting is achieved in the preferred embodiment by installing bolts 25 through the flange, e.g., 24 and into the casing bolt hole, e.g., 101.
  • the groove 35 of the disk plate 15 mates with the corresponding surface 90 of the center support piston 91 of the transmission, as shown in Figure 9.
  • the overdrive snap ring 97 has been placed around the center support piston 91 and has been moved downward about the piston 91 to a position in which the snap ring installer ridge 33 contacts the overdrive snap ring 97 and is positioned to force it down towards the case ring groove 99 where it is to be installed. Further in this same position, due to the dimensioning, the bevel spring depressor ridge 29 is contacting the bevel spring 95.
  • the bevel spring 95 is a return spring which keeps the overdrive (center support) piston 91 in a downward position when the piston 91 applies the overdrive clutch. Then, when the overdrive piston is released, the bevel spring 95 pushes downward.
  • twist T-bar 17 is manually rotated downward through the cross-bar 13 manually or by a torque wrench, thereby applying pressure onto the center of the disk plate 15.
  • the disk plate 15 in turn, simultaneously pushes down the bevel spring 95 and the center support piston 91 while pushing the overdrive snap ring 97 into place.
  • torque wrench reads 65 foot-pounds
  • the outer center support snap ring 93 must be manually installed into the housing via a screwdriver or flat blade, all in one operation.
  • the preferred tool 11 finds particular application in removal of the center support piston 91 and in installation or reinstallation of the center support piston 9 1 and overdrive snap ring 97. A more detailed description of these removal and installation operations with the preferred tool follows. Removal of the Center Support PiBton
  • the insertion tool 11 is first inserted down into the inner portion of the transmission casing, and the cross-bar 13 is placed over the top of the center support piston 91 and across the flat shoulder 105 of the transmission casing
  • the rebuilder next takes a firm hold of the T-bar handle 17 and manually begins twisting the handle 17 downward, applying pressure to the disc plate 15, thereby relieving pressure against the center support snap ring 93
  • the two bolts 23, 25, which fasten the cross-bar 13 to the transmission casing, are manually unscrewed, and either the right or the left hand used to grasp the T-bar handle 17 and lift the tool 11 out of the casing.
  • the center support piston 91 may then be removed by manually sliding it out of the casing. Installing the Center Support Piston, and Overdrive Snap Ring To install the center support piston 91 and overdrive snap ring 97, the center support piston 91 is first inserted into the pump housing and lowered until it is seated against the lower spring located in the housing (not shown) .
  • the center support outer snap ring 93 is then inserted into the pump housing and around the outside of the center support piston 91.
  • the bevel spring 95 is then inserted on top of the center support piston 91.
  • the overdrive snap ring 97 is placed on top of the bevel spring 95 and around the inner wall of the center support piston 91.
  • the insertion tool 11 is then lowered into the interior of the transmission casing, and the cross-bar 13 is placed over the top of the center support piston 91 and across the shoulder 105 of the casing.
  • the two bolts 23, 25 are again placed through the slots 51, 53 of the crossbar 13 into the existing bolt holes in the shoulder 105 of the pump housing and manually wrenched downward until firmly tightened.
  • One hand is then used to take a firm hold of the T-bar handle 17 to twist the handle 17 downward, applying pressure to the disc plate 15, again using either judgment or a torque wrench to apply 65 footpounds of pressure to the T-bar 17.
  • the T-bar handle 17 is twisted downward until a clicking sound is heard, which signals that the overdrive snap ring 97 has been installed.
  • the center support piston outer snap ring 93 is then pushed downward and into place until another clicking sound is heard.
  • the pressure on the center support piston 91 is manually relieved by twisting the T-bar handle 17 in the opposite direction.
  • the two bolts which fasten the cross-bar to the transmission casing are then unscrewed and, with one hand, the T-bar handle 17 and tool 11 are lifted out of the pump housing.
  • the shaft pins 19, 21 which are running through the cross-bar 13, guide the disk plate 15 up and down, keeping it in alignment during these operations .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

L'invention porte sur un outil d'insertion/retrait d'un circlips, cet outil comprenant une poignée rotative sous forme de barre en T (71) enfilée dans une barre transversale (13). Des première et seconde broches ou 'vis à épaulement' (19, 21) sont montées coulissantes dans la surface supérieure de la barre transversale et sont enfilées dans une plaque discoïde (15). Cette plaque discoïde (15) comporte sur toute sa circonférence une structure marginale périphérique (28) d'une section transversale uniforme possédant une arête de dépression (29) dont dépend un ressort oblique, une arête de positionnement (33) du circlips et une dépression dimensionnée (35) de façon à recevoir une partie coopérante du piston support central d'une transmission automatique et à s'assembler avec cette partie.
PCT/US1996/013947 1996-08-26 1996-08-26 Outil d'insertion d'un circlips pour transmissions automatiques WO1998008647A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU69609/96A AU6960996A (en) 1996-08-26 1996-08-26 Snap ring insertion tool for automatic transmissions
PCT/US1996/013947 WO1998008647A1 (fr) 1996-08-26 1996-08-26 Outil d'insertion d'un circlips pour transmissions automatiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1996/013947 WO1998008647A1 (fr) 1996-08-26 1996-08-26 Outil d'insertion d'un circlips pour transmissions automatiques

Publications (1)

Publication Number Publication Date
WO1998008647A1 true WO1998008647A1 (fr) 1998-03-05

Family

ID=22255696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/013947 WO1998008647A1 (fr) 1996-08-26 1996-08-26 Outil d'insertion d'un circlips pour transmissions automatiques

Country Status (2)

Country Link
AU (1) AU6960996A (fr)
WO (1) WO1998008647A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486426A (zh) * 2013-09-26 2014-01-01 浙江吉利控股集团有限公司 挡油板拆装装置
CN101934513B (zh) * 2009-07-02 2014-04-02 康准电子科技（昆山）有限公司 自动安装机构
CN110434804A (zh) * 2019-08-26 2019-11-12 泸州容大智能变速器有限公司 拆卸工装
CN111002386A (zh) * 2019-12-30 2020-04-14 江苏斯尔邦石化有限公司 用于生产树脂的切粒机刀盘拆装工具
CN114473955A (zh) * 2022-03-24 2022-05-13 济南宝钢钢材加工配送有限公司 一种卷取机卷筒用碟簧压帽专用拆卸工具及其操作方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624041A (en) * 1985-10-21 1986-11-25 Gathright Puller, Inc. Sleeve bearing puller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624041A (en) * 1985-10-21 1986-11-25 Gathright Puller, Inc. Sleeve bearing puller

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101934513B (zh) * 2009-07-02 2014-04-02 康准电子科技（昆山）有限公司 自动安装机构
CN103486426A (zh) * 2013-09-26 2014-01-01 浙江吉利控股集团有限公司 挡油板拆装装置
CN110434804A (zh) * 2019-08-26 2019-11-12 泸州容大智能变速器有限公司 拆卸工装
CN110434804B (zh) * 2019-08-26 2024-04-26 泸州容大智能变速器有限公司 拆卸工装
CN111002386A (zh) * 2019-12-30 2020-04-14 江苏斯尔邦石化有限公司 用于生产树脂的切粒机刀盘拆装工具
CN114473955A (zh) * 2022-03-24 2022-05-13 济南宝钢钢材加工配送有限公司 一种卷取机卷筒用碟簧压帽专用拆卸工具及其操作方法
CN114473955B (zh) * 2022-03-24 2024-01-12 济南宝钢钢材加工配送有限公司 一种卷取机卷筒用碟簧压帽专用拆卸工具及其操作方法

Also Published As

Publication number Publication date
AU6960996A (en) 1998-03-19

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