WO2004065035A1 - 筒体の端部の加工方法及びこの方法により加工した筒体、防振ブッシュの製造方法及び防振ブッシュ、並びに押圧具 - Google Patents
筒体の端部の加工方法及びこの方法により加工した筒体、防振ブッシュの製造方法及び防振ブッシュ、並びに押圧具 Download PDFInfo
- Publication number
- WO2004065035A1 WO2004065035A1 PCT/JP2003/000448 JP0300448W WO2004065035A1 WO 2004065035 A1 WO2004065035 A1 WO 2004065035A1 JP 0300448 W JP0300448 W JP 0300448W WO 2004065035 A1 WO2004065035 A1 WO 2004065035A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylindrical body
- pressing tool
- face
- end side
- vibration
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/025—Special design or construction with rolling or wobbling dies
-
- 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
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
- B21K21/12—Shaping end portions of hollow articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/3842—Method of assembly, production or treatment; Mounting thereof
Definitions
- the present invention relates to a method of processing an end portion of a cylindrical body, a cylindrical body processed by the method, a method of manufacturing a vibration-proof bush, a vibration-proof bush, and a pressing tool.
- the present invention is suitable for an anti-vibration push incorporated in a suspension mechanism of an automobile.
- a cylinder-shaped part for the purpose of damping and damping vibrations is provided at the connection between the vehicle body and the suspension, that is, the connection between the arm (lower arm etc.) that supports the wheels and the body-side member such as the frame
- the anti-vibration bush is provided.
- anti-vibration pushes are provided as engine mounts on the support that supports the engine.
- FIG. 7 shows a conventional anti-vibration push 100.
- This screw-proof bush 100 is composed of a metal inner cylinder 101 and an outer cylinder 102 arranged concentrically, and a rubber-like elastic body 103 interposed therebetween. .
- the shaft member 104 projecting from the first support member 105 is passed through the inner cylinder 101 and the bolt hole of the second support member 105, and the shaft member 104
- the nut 13 1 is screwed into the male thread portion 130 on the distal end side.
- the inner cylinder 101 is clamped and fixed by the first and second support members 105.
- the outer cylinder 102 is press-fitted into a mounting hole 107 of the third support member 106.
- the inner cylinder 101 of the vibration-proof push 100 is sandwiched between the first support member 105 and the second support member 105, the end face 1 When the area is small, the surface pressure of the end face receiving the axial force increases. Then, the support member 105 is dented and the nut 1311 is easily loosened.
- the weight of the inner cylinder 101 increases.
- a third technique has been proposed in which the end portion 109 of the inner cylinder 101 is subjected to cold plastic working with a pressing tool 120 to expand the diameter (for example, Japanese Patent Laid-Open No. JP 2004-3838 A).
- the pressing tool 120 has a projection 121 at the center of the distal end surface. The pressing tool 120 is pressed against the end face 108 while rotating so as to draw a conical locus or a substantially conical locus around the axis 122 of the inner cylinder 101.
- the present invention has been made in view of the above situation, and has as its object to avoid a problem in which a supporting member is depressed by the pressure contact force of the cylinder, to stably support the cylinder with the supporting member, and to reduce the weight of the cylinder.
- Another advantage is that the manufacturing cost can be reduced and the choice of material for the cylinder can be broadened.
- the feature of the method for processing the end of the cylindrical body according to the present invention is that, while pressing the surface roughening action portion provided on the pressing tool against the end face on the one end side of the cylindrical body, the pressing tool is replaced with the cylindrical body.
- the end face is extended and the surface is roughened by rotating so as to draw a conical locus or a substantially conical locus about the axis of the shaft.
- a pressing force toward the axial direction of the cylindrical body and a pressing force and a force S toward the radially outward side of the cylindrical body are applied to one end of the cylindrical body.
- the end face on the one end side of the cylindrical body can be expanded and roughened.
- the end face can be expanded with a smaller force than when the pressing force is applied.
- the surface pressure of the end surface of the cylindrical body can be reduced, and the problem that the support member for the cylindrical body is dented by the axial force from the cylindrical body can be avoided.
- the cylinder can be made lighter than a means for increasing the area of the end face, and a cylinder having a large diameter at the end is formed by forging. Compared to the means, the cylinder can be manufactured at a lower cost.
- the end surface of the cylindrical body is roughened, slippage does not easily occur between the cylindrical body and the support member. Therefore, even if the holding force of the pair of support members with respect to the cylinder is small, it is easy to reliably clamp the cylinder. That is, the holding force of the pair of support members can be smaller than when the end surface of the cylindrical body is not roughened. Then, the size of the end surface of the cylindrical body to be expanded can be small. As a result, a cylinder made of a hard material can be selected, and the range of choices for the material of the cylinder can be expanded.
- both processes can be performed at once with the pressing tool having the surface roughening action portion, the number of steps can be reduced, and the device can be manufactured at low cost. it can.
- the cylindrical body according to the present invention is a cylindrical body whose end is processed by the above method.
- the surface roughening action portion provided on the pressing tool is pressed against the end face on one end side of the cylindrical body, and the pressing tool is rotated so as to draw a conical locus or a substantially conical locus about the axis of the cylindrical body.
- the features of the second method of manufacturing a vibration-isolating bush according to the present invention include:
- a vulcanization molding step of vulcanization molding a rubber-like elastic body on the outer periphery of the cylindrical body In the vulcanization molding step, a surface roughening action portion provided on a pressing device is pressed against an end surface on one end side of a cylindrical body obtained by vulcanizing a rubber-like elastic body on an outer peripheral portion. Rotating the cylindrical body so as to draw a conical locus or a substantially R-cone locus around the axis of the cylindrical body, and expanding the end surface on one end side of the cylindrical body to roughen the surface, thereby forming a cylindrical end processing step. It is in.
- the rubber-like elastic body is vulcanized and formed on the outer peripheral portion of the cylindrical body to expand the end face by force. There is no. Therefore, a sufficiently long free length of the rubber-like elastic body can be secured. Thereby, the durability of the rubber-like elastic body can be improved.
- the anti-vibration bush according to the present invention is an anti-vibration push manufactured by the above-described method of manufacturing one of the above-mentioned and anti-vibration bushes.
- an anti-vibration bush having a light-weight, inexpensive, and durable cylindrical body. Further, it is possible to provide an anti-vibration push including a cylindrical body made of a light, inexpensive, and durable material, and a durable rubber-like elastic body.
- the pressing tool according to the present invention is a pressing tool that is used in any one of the above-described methods and includes the surface roughening action portion.
- the end face on one end side of the cylindrical body is expanded and processed as described above.
- the surface can be roughened.
- the pressing tool includes, on the distal end side of the pressing tool main body, a protruding portion that is inserted into a hollow hole on one end side of the cylindrical body, and a protruding portion that protrudes radially outward from a base end side of the protruding portion.
- the surface roughening action portion is formed by forming the end face on the distal end side of the overhang portion into an uneven surface, the end face on the one end side of the cylindrical body is further expanded to roughen the surface. It can be easier to do.
- the uneven surface is formed in a tapered surface located closer to the distal end side of the pressing tool body toward the radially inner side, and the taper angle is from 168 ° to 176 °. It is possible to make it easier for the surface roughening action portion to bite into the end face on the side of the portion.
- the surface of the cylindrical body has a twill shape.
- the end surface of the cylindrical body can be pressed against the pair of support members that sandwich the cylindrical body.
- FIG. 1 is a longitudinal sectional view showing an anti-vibration push attached to a vehicle body of an automobile
- FIG. 2 is a view showing an initial state in which one end of a cylindrical body is machined
- FIG. 3 is a diagram showing a final state in which one end of the cylindrical body is being machined
- FIG. 4 is a diagram showing a final state in which the other end of the cylindrical body is being machined
- FIG. 5 is a view showing a pressing action portion of the pressing tool
- FIG. 6 is a diagram showing a pressing action portion of the pressing tool
- FIG. 7 is a diagram showing a conventional anti-vibration push
- FIG. 8 is a diagram showing another conventional anti-vibration bush
- Fig. 9 is a diagram showing a conventional processing method.
- FIG. 10 is a longitudinal sectional view showing the vibration-isolating bush processed by the method of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows an inner cylinder 1 (corresponding to a cylinder) processed by the method according to the present invention.
- An anti-vibration bush is shown.
- This vibration-isolating bush is composed of the inner cylinder 1, the outer cylinder 2, and a rubber-like elastic body 3 interposed therebetween and connecting them, and a connecting portion between the vehicle body of the automobile and the suspension mechanism. It is provided in.
- reference numeral 4 denotes a mounting bolt passing through the inner cylinder 1
- 5 denotes a pair of support members for holding the inner cylinder
- 6 denotes a collar on the vehicle body side into which the outer cylinder 2 is press-fitted.
- the inner cylinder 1 and the outer cylinder 2 are formed of a metal such as iron or aluminum.
- Inner cylinder 1 is thicker and longer than outer cylinder 2. Further, both ends of the inner cylinder 1 in the direction of the axis O project from both ends of the outer cylinder 2. Both ends of the inner cylinder 1 are subjected to cold working to expand the end face and roughen the surface.
- the rubber-like elastic body 3 is vulcanized and bonded to the outer peripheral surface of the inner cylinder 1 and the inner peripheral surface of the outer cylinder 2.
- the inner cylinder 1 is a straight tube, by product dimensions:: Limousine has been cut a little longer.
- a pressing tool 7 (see FIG. 2) for the end of the inner cylinder 1 is used.
- the pressing device 7 is attached to a pressing device (not shown), and is pressed and rotated by the pressing device.
- Fig. 2 attach the anti-vibration push to the table of the pressing device so that it is in the vertical position.
- the surface roughening portion 9 provided on the pressing tool ⁇ is lightly pressed against the end surface 8 (upper end surface) of the inner cylinder 1 on one end 21 side, and the inner surface 1 on the one end 21 side of the inner cylinder 1 is pressed.
- the pressing tool 7 presses the one end 21 of the inner cylinder 1 with the pressing tool 7 so that the convex section 14 provided on the tip 23 side of the pressing tool main body is pressed lightly.
- the pressing force is increased while rotating the pressing member 7 so as to draw a conical locus or a substantially conical locus around the axis O of the inner cylinder 1.
- the end face 8 is extended and roughened.
- the pressing member 7 includes a frusto-conical convex portion 14 to be inserted into one end portion 21 of the inner cylinder 1 and a base end 2 of the convex portion 14.
- a columnar projection 13 extending from the 7 side to the radially outer side 28 is provided on the tip 23 side of the pressing tool body 12. The projection 14 and the overhang 13 are concentric.
- the diameter of the base end 27 of the projection 14 is set slightly larger than the inner diameter of the inner cylinder 1, and the diameter of the tip is set slightly smaller than the inner diameter of the inner cylinder 1. And the tip 2 3 of the projection 1 4 The sides are chamfered.
- the surface roughening portion 9 is configured by forming an end surface 24 on the tip 29 side of the overhang portion 13 into an uneven surface.
- the concavo-convex surface is formed as a tapered surface located closer to the distal end 23 of the pressing tool main body 12 toward the radially inner side 22, and the taper angle 0 thereof is 1 76 ° (1 6 8 ⁇ 1 76. is preferred).
- the concavo-convex surface is formed by forming a large number of concentric annular concavo-convex portions 17 centered on the axis P of the overhang portion 13 on the end surface 24 on the tip 29 side of the overhang portion 13.
- the hardness of the surface roughening portion 9 is almost the same as the hardness of the surface roughening portion 9 provided in a normal surface roughening tool.
- the rear end of the pressing tool body 12 is a mounting portion 15 for the pressing device.
- One end 2 of the inner cylinder 1 Expansion processing of the end face 8 on the 1 side ⁇
- the anti-vibration bush is turned upside down and fixed to the table of the pressing device. Then, as shown in FIG. 4, the end face 1-6 on the other end 26 side is expanded and roughened by the same procedure.
- the method of manufacturing a vibration-isolating bush employing the above method includes a vulcanization molding step of vulcanizing and molding a rubber-like elastic body 3 on an outer peripheral portion 20 of the inner cylinder 1.
- the surface roughening action portion 9 provided on the pressing tool 7 is pressed against the end surface 8 on the one end 21 side of the inner cylinder 1 in which the rubber-like elastic body 3 is vulcanized and molded on the outer peripheral portion.
- the pressing tool 7 is rotated around the axis O of the inner cylinder 1 so as to draw a conical locus or almost a conical locus, and the end face 8 of the inner cylinder 1 on one end 21 side is expanded and the surface is roughened.
- a step of adding a cylindrical end portion is added to add a cylindrical end portion.
- the roughening action portion 9 provided on the pressing tool 7 is pressed against the end face 8 on one end portion 21 side of the inner cylinder 1,
- the pressing tool 7 is rotated around the axis O of the inner cylinder 1 so as to draw a conical locus or almost a conical locus, so that the end face 8 expands!]
- a vulcanization molding step of vulcanizing and molding the rubber-like elastic body 3 on the outer peripheral portion 20 of the inner cylinder 1 whose end has been processed in the cylindrical body processing step can be exemplified.
- the present invention can also be applied to the case where the end of the cylindrical body (a member corresponding to the inner cylinder 1 in the above embodiment) of such a vibration-proof bush is processed.
- the present invention can also be applied to the case where the end of a cylinder provided on a component other than the vibration-proof push is machined.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Springs (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003203356A AU2003203356A1 (en) | 2003-01-20 | 2003-01-20 | Method of processing end of sleeve, sleeve processed by this method, method of producing anti-vibration bushing, anti-vibration bushing, and pressing tool |
JP2004567123A JPWO2004065035A1 (ja) | 2003-01-20 | 2003-01-20 | 筒体の端部の加工方法及びこの方法により加工した筒体、防振ブッシュの製造方法及び防振ブッシュ、並びに押圧具 |
PCT/JP2003/000448 WO2004065035A1 (ja) | 2003-01-20 | 2003-01-20 | 筒体の端部の加工方法及びこの方法により加工した筒体、防振ブッシュの製造方法及び防振ブッシュ、並びに押圧具 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/000448 WO2004065035A1 (ja) | 2003-01-20 | 2003-01-20 | 筒体の端部の加工方法及びこの方法により加工した筒体、防振ブッシュの製造方法及び防振ブッシュ、並びに押圧具 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004065035A1 true WO2004065035A1 (ja) | 2004-08-05 |
Family
ID=32750572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/000448 WO2004065035A1 (ja) | 2003-01-20 | 2003-01-20 | 筒体の端部の加工方法及びこの方法により加工した筒体、防振ブッシュの製造方法及び防振ブッシュ、並びに押圧具 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPWO2004065035A1 (ja) |
AU (1) | AU2003203356A1 (ja) |
WO (1) | WO2004065035A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100327499A1 (en) * | 2009-06-29 | 2010-12-30 | Tokai Rubber Industries, Ltd. | Vibration damping rubber bushing |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61248930A (ja) * | 1985-04-25 | 1986-11-06 | Yamashita Rubber Kk | ブツシユ及びその製法 |
JPH044928A (ja) * | 1990-04-20 | 1992-01-09 | Kaiyo Giken Kk | 溝付きフレアフランジの製造法 |
EP0524844A1 (fr) * | 1991-07-23 | 1993-01-27 | Caoutchouc Manufacture Et Plastiques | Procédé de formage d'une surépaisseur aux extrémités de la douille interne d'une articulation, après moulage et ses applications |
JPH11108094A (ja) * | 1997-10-09 | 1999-04-20 | Bridgestone Corp | 防振装置の製造方法 |
JP2002188671A (ja) * | 2000-12-25 | 2002-07-05 | Toyo Tire & Rubber Co Ltd | 防振ブッシュの製造方法 |
-
2003
- 2003-01-20 WO PCT/JP2003/000448 patent/WO2004065035A1/ja active Application Filing
- 2003-01-20 AU AU2003203356A patent/AU2003203356A1/en not_active Abandoned
- 2003-01-20 JP JP2004567123A patent/JPWO2004065035A1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61248930A (ja) * | 1985-04-25 | 1986-11-06 | Yamashita Rubber Kk | ブツシユ及びその製法 |
JPH044928A (ja) * | 1990-04-20 | 1992-01-09 | Kaiyo Giken Kk | 溝付きフレアフランジの製造法 |
EP0524844A1 (fr) * | 1991-07-23 | 1993-01-27 | Caoutchouc Manufacture Et Plastiques | Procédé de formage d'une surépaisseur aux extrémités de la douille interne d'une articulation, après moulage et ses applications |
JPH11108094A (ja) * | 1997-10-09 | 1999-04-20 | Bridgestone Corp | 防振装置の製造方法 |
JP2002188671A (ja) * | 2000-12-25 | 2002-07-05 | Toyo Tire & Rubber Co Ltd | 防振ブッシュの製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100327499A1 (en) * | 2009-06-29 | 2010-12-30 | Tokai Rubber Industries, Ltd. | Vibration damping rubber bushing |
US8465010B2 (en) * | 2009-06-29 | 2013-06-18 | Tokai Rubber Industries, Ltd. | Vibration damping rubber bushing |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004065035A1 (ja) | 2006-05-18 |
AU2003203356A1 (en) | 2004-08-13 |
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