WO2006054587A1 - Element d'ajustement par compression - Google Patents

Element d'ajustement par compression Download PDF

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Publication number
WO2006054587A1
WO2006054587A1 PCT/JP2005/021022 JP2005021022W WO2006054587A1 WO 2006054587 A1 WO2006054587 A1 WO 2006054587A1 JP 2005021022 W JP2005021022 W JP 2005021022W WO 2006054587 A1 WO2006054587 A1 WO 2006054587A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
fitting
taper
fitting member
fitted
Prior art date
Application number
PCT/JP2005/021022
Other languages
English (en)
Japanese (ja)
Inventor
Yasunao Ono
Kazuhiko Hayashi
Masayasu Tajima
Akira Yokoyama
Haruhisa Sato
Original Assignee
Tanaka Seimitsu Kogyo 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 Tanaka Seimitsu Kogyo Co., Ltd. filed Critical Tanaka Seimitsu Kogyo Co., Ltd.
Publication of WO2006054587A1 publication Critical patent/WO2006054587A1/fr

Links

Classifications

    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
    • F16B4/004—Press fits, force fits, interference fits, i.e. fits without heat or chemical treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2305/00—Valve arrangements comprising rollers
    • F01L2305/02—Mounting of rollers

Definitions

  • the present invention relates to a press-fitting member that is fastened by press-fitting, and more specifically, press-fitting that can be press-fitted with a high fastening force with high productivity to a press-fitted member having a fitting hole.
  • the present invention relates to a press-fitting member having a feature in the shape of the outer diameter side of the front end of the press-fitting side of the member.
  • a press-fitting start side tip portion of the press-fitting member is chamfered, and the press-fitting member having a fitting hole which is similarly chamfered is subjected to the press-fitting.
  • the member is press-fitted and fitted.
  • Patent Document 2 Japanese Utility Model Publication No. 3-42004
  • Patent Document 2 JP 2001-263363 A
  • a large press-fitting load can be reduced by reducing the chamfer angle of the press-fitting member. If it is narrowed, it is necessary to widen the chamfer width or increase the diameter of the end face of the press-fitting start side. Increasing the chamfer width reduces the surface area of the outer diameter surface with the largest diameter and lowers the fastening force. To increase the surface area of the outer diameter surface in order to improve the fastening force, there is a need to increase the size or length of the press-fit member, which is not a preferable improvement method.
  • Patent Document 2 Although it describes improvements related to the chamfered shape of the fitting hole of the pressed-in member, it requires high-precision machining on the inner diameter surface, so it is difficult to ensure dimensional accuracy in mass production. This is disadvantageous (see Patent Document 2).
  • the present invention has been made to solve the drawbacks of the prior art.
  • the present inventors diligently studied to solve the above problems.
  • the press-fitting member As a result, it is used to integrally fasten the press-fitting member and the press-fitted member by press-fitting, and has a tapered surface having two different taper angles on the outer diameter side of the press-fitting start side end of the press-fitting member.
  • the first taper portion is formed in a direction in which the diameter increases from the maximum diameter portion of the end surface of the press-fitting start side tip portion in the axial direction, and then the second taper portion is the first taper portion.
  • the above-mentioned problem is caused by a press-fitting member that is formed in a direction that expands from the maximum diameter portion of the portion in the axial direction and that the taper angle of the second taper portion is narrower than the taper angle of the first taper portion. I found out that it could be solved all at once.
  • a convex curved surface portion is provided between the maximum diameter portion of the first taper portion and the minimum diameter portion of the second taper portion, and / or (mouth) of the second taper portion.
  • a convex curved surface portion is provided between the maximum diameter portion and the outer diameter portion of the press-fitting member; or / and (c) the maximum diameter portion of the end surface and the minimum diameter portion of the first taper portion. Convex curved surface It has also been seen that the provision of the portion enables more suitable press-fitting between the press-fitting member and the press-fitted member.
  • a more preferable press-fitting can be achieved by a press-fitting member in which the taper angle of the second taper portion is 5 to 15 °. It has also been found that the taper angle of the second taper portion is 5 to 15 °, and that the taper angle of the first taper portion is 20 to 90 °, further preferable press-fitting can be achieved. It has also been found that the most preferable press-fitting can be achieved by a press-fitting member in which the taper angle of the second taper portion is 5 to 15 ° and the taper angle of the first taper portion is 20 to 40 °.
  • the first taper portion is formed in a direction that expands from the maximum diameter portion of the end surface of the press-fitting start side tip end in the axial direction, and then the second taper portion is the first taper portion.
  • the taper portion is formed in a direction extending from the maximum diameter portion to the axial direction, and the taper angle of the second taper portion is narrower than the taper angle of the first taper portion.
  • the convex curved surface portion is provided between the maximum diameter portion of the second taper portion and the outermost diameter portion of the press-fitting member, according to any one of (1) to (2), Press-fit member,
  • a press-fit product wherein the press-fit member according to any one of (1) to (7) is integrally fastened to the press-fit member by press-fitting,
  • press-fitting member is a roller shaft that is press-fitted into the inner peripheral surface of the roller shaft hole of the rocker arm. Alloy rocker arm.
  • the press-fitting member of the present invention can be press-fitted into the fitting hole of the press-fitted member with high productivity and high fastening force, and can suppress generation of galling during press-fitting into the fitting hole. It is possible to press fit with good press fitting accuracy.
  • FIG. 1 is an axial sectional view of a press-fitting member according to an embodiment of the present invention.
  • FIG. 2 is a partially enlarged view of a front end portion of a press-fitting start side of a press-fitting member surrounded by a circle shown in FIG.
  • FIG. 3 is a partially enlarged view of a front end portion of a press-fitting start side of a press-fitting member having a conventionally known chamfering.
  • FIG. 4 is an explanatory view showing the press-fitting allowance of FIG.
  • FIG. 5 is an explanatory view showing the press-fitting allowance of FIG.
  • FIG. 6 is a cross-sectional view showing an installation state of the press-fitting member and the press-fitting member immediately before press-fitting when the press-fitting member according to the present invention is press-fitted to the press-fitted member.
  • FIG. 7 is a sectional view showing a state when the press-fitting member according to the present invention is integrally fastened to the press-fitted member by press-fitting.
  • FIG. 9 Test results showing the relationship between the press-fitting allowance when the press-fitting member is press-fitted to the press-fitted member and the removal load after the press-fitting member is press-fitted to the press-fitted member.
  • FIG. 1 to 10 show an embodiment of the present invention
  • FIG. 1 shows a pressure according to the embodiment of the present invention. It is an axial sectional view of an insertion member.
  • FIG. 2 is a partially enlarged view of the front end portion of the press-fitting start side of the press-fitting member surrounded by a circle shown in FIG.
  • FIG. 3 is a partially enlarged view of a front end portion of a press-fitting start side of a press-fitting member having a conventionally known chamfering.
  • FIG. 4 is an explanatory view showing the press-fitting allowance of FIG.
  • FIG. 5 is an explanatory view showing the press-fitting allowance of FIG. FIG.
  • FIG. 6 is a cross-sectional view showing the installation state of the press-fitting member and the press-fitting member immediately before press-fitting when the press-fitting member according to the present invention is press-fitted to the press-fitted member.
  • FIG. 7 is a sectional view showing a state when the press-fitting member according to the present invention is integrally fastened to the press-fitted member by press-fitting.
  • Fig. 8 shows the test results showing the relationship between the presence or absence of galling and the press-fitting allowance and press-fitting load when press-fitting the press-fitted member to the press-fitted member.
  • FIG. 9 shows the test results showing the relationship between the press-fitting allowance when the press-fitting member is press-fitted to the press-fitted member and the removal load after the press-fitting member is press-fitted to the press-fitted member.
  • Fig. 10 shows the test results showing the influence of the press-fitting allowance and the second taper angle of the press-fitting member when the press-fitting member is press-fitted on the press-fitted member on the presence or absence of galling.
  • the press-fitting member 10 has, for example, a cylindrical shape having a hollow.
  • the press-fitting start side tip surface 12 is a donut circle formed in a direction perpendicular to the axial direction.
  • the outer diameter surface 15 is formed to have the same diameter from the press-fitting start side tip surface 12 through the press-fitting start side tip portion 11 through the press-fitting start side tip portion 11 over the entire length excluding both tip portions.
  • the inner diameter surface 20 is formed to have the same diameter from the front end surface 12 on the press-fitting start side through the inner diameter chamfered portion 19 to the entire length excluding the double-sided chamfered portion in the axial direction.
  • a preferable shape of the press-fitting start side tip portion 11 will be described as an example with reference to FIG. 2 and FIG. 3 together.
  • FIG. 3 shows the shape of the press-fitting start side tip 30 of a conventionally known press-fitting member.
  • the press-fitting start side tip 30 extends from the maximum diameter part of the press-fitting start tip 31 to the outer diameter 33 side.
  • a chamfered portion 32 is provided in the direction of increasing the diameter relative to the axial direction.
  • FIG. 2 shows a preferred shape and shape of the press-fitting start side tip portion 11 of the press-fitting member of the present invention.
  • the press-fitting start side tip portion 11 is a convex curved surface portion from the maximum diameter portion of the press-fitting start side tip surface 12.
  • the first taper portion 13 is provided in the direction of increasing the diameter from the maximum diameter portion of the convex curved surface portion 17 to the outer diameter surface 15 side and in the axial direction.
  • a convex curved surface portion 16 is provided from the maximum diameter portion of the first taper portion 13, and the shaft from the maximum diameter portion of the convex curved surface portion 16 to the outer diameter surface 15 side is provided.
  • the second taper portion 14 is provided so that the taper angle is narrower than the taper angle of the first taper portion 13 in the direction of increasing the diameter relative to the direction. Further, a convex curved surface portion 18 is provided from the maximum diameter portion of the second taper portion 14, and the maximum diameter portion of the convex curved surface portion 18 is provided so as to be connected to the outer diameter surface 15.
  • the taper angle means an angle formed by a pair of bus bars whose diameter increases toward the outer diameter surface side in a cross section of the press-fitting member passing through the central axis of the press-fitting member. That is, the taper angle is twice the angle at which the central axis and the taper intersect.
  • the press-fitting start side tip portion 11 of the present invention shown in FIG. 4 is compared with the press-fitting start side tip portion 30 of the conventionally known press-fitting member shown in FIG. Since the first taper portion 13 and the second taper portion 14 have different taper angles, the first taper portion 13 is first press-fitted from the press-fit start portion toward the maximum diameter portion. As the pressure increases, the press-fitting volume increases in the A area and the press-fitting load gradually increases. As the press-fitting load increases, the narrower angle than the taper angle of the first taper part 13 as shown in the B area.
  • the present invention is a press-fitting member having the same press-fitting allowance as compared with the case of the conventionally known chamfered part 32.
  • the press-fitting accuracy when press-fitting can be increased. That is, even if the press-fitting allowance is increased from the conventionally known press-fitting member, the press-fitting can be performed without any trouble.
  • the first taper portion 13 and the Z taper portion 2 or the second taper portion 14 are in the outer diameter direction with respect to the axial direction that is not the case of a flat surface that forms a simple conical surface. It can be combined with a curved clawing shape.
  • a grindstone used at the time of outer peripheral grinding of the outer diameter surface 15 is formed into a shape corresponding to the press-fitting start tip 11 in the shape of the press-fitting start tip 11.
  • a preferable press-fitting start side tip 11 can be obtained with high productivity.
  • the press-fitting start-side tip 11 can be obtained by turning using a general-purpose tool formed in the shape of the press-fitting start-side tip 11.
  • the press-fitting member 10 and the press-fitting member 40 are installed so that a part of the press-fitting start side tip part 11 is put on the catch part 42.
  • the outer diameter of the press-fitting member is set to be increased by the press-fitting allowance with respect to the inner diameter of the fitting hole 41, so that at least a part of the tip 11 on the press-fitting start side of the press-fitting member 10 is press-fitted.
  • the press-fitting member 10 and the press-fitted member 40 are installed as described above, the other end side of the press-fitting member 10 opposite to the front end surface 12 of the press-fitting member 10 is installed with a hydraulic press or the like.
  • the press-fitting member 10 is advanced into the fitting hole 41 of the press-fitted member 40 in the order of the first taper part 13 ⁇ second taper part 14 ⁇ outer diameter surface 15 to the press-fitting completion position.
  • the press-fitting member 10 is press-fitted to the press-fitted member 40.
  • the graph in Fig. 8 shows the test results showing the relationship between the presence or absence of galling and the press-fit allowance and press-fit load.
  • the outer diameter is 16 mm
  • the first taper angle is 30 °
  • the second taper angle is 10 °
  • the known press-fitting member has an outer diameter of 16 mm and a taper angle of 30 °. It was.
  • the graph in Fig. 9 shows the test results showing the relationship between the press-fit allowance and the unloading load. In the example of FIG.
  • the press-fitting member is a steel hollow cylindrical member, the outer diameter is 16 mm, the first taper angle is 30 °, and the second taper angle is 10 °. .
  • the press-fitted member is an aluminum alloy forged member having a fitting hole, and the fitting hole is provided with a chamfer so that the outer diameter portion of the press-fitting member is accommodated.
  • the press-fitting allowance is a difference formed between the outer diameter of the press-fitting member and the inner diameter of the fitting hole.
  • the press-fitting load means a maximum load required when the press-fitting member is press-fitted to the press-fitted member.
  • the extraction load means the maximum load generated when the press-fitting member is forcibly removed from the opposite side to the press-fitting direction in order to measure the fastening force between the press-fitted member and the press-fitted member.
  • the galling shown in the graph of FIG. 8 means that, for example, when the press-fitting member is press-fitted into the fitting hole of the press-fitted member, the cores of the press-fitting member and the press-fitted member are displaced without matching at the time of press-fitting. As a result, the vicinity of the inlet of the fitting hole is scraped off at the tip of the press-fitting member during press-fitting, or a part of the inner diameter surface of the press-fitted member is caused by friction generated during press-fitting.
  • the press-fitting member is intermittently cut or waved on the inner diameter surface of the fitting hole. It represents a state where it is press-fitted. Therefore, press-fitting with caulking may result in a poor press-fitting state because there is a risk of deterioration in product quality due to a decrease in press-fitting accuracy and a reduction in fastening force.
  • the press-fitting load increases proportionally as the press-fitting allowance increases.
  • the press-fitting member of the present invention having the press-fitting start side tip of the present invention shown in FIG. 2 ( ⁇ in FIG. 8), and a known press-fitting member having the hitherto known press-fitting start side tip shown in FIG. Both the garden in 8 and X) have a larger press-fitting load as the press-fitting allowance increases, and the tendency is similar.
  • press-fitting member of the present invention press-fitting with a fastening force higher than that of conventionally known press-fitting members is possible.
  • 9 represents a press-fitting member of the present invention having a press-fitting start side tip portion of the present invention. ).
  • the graph in Fig. 10 shows the test results showing the effect of the press-fitting allowance and the second taper angle of the press-fitting member on whether or not the press-fitting member is press-fitted into the press-fitted member.
  • galling does not occur regardless of the press-fitting allowance.
  • the first taper angle is 60 ° and the second taper angle is 20-40.
  • galling does not occur if the press-fitting allowance is less than 100 z m, but galling may occur if it is greater than lOO x m.
  • galling occurs when the second taper angle is less than 5 ° and the press-fitting allowance is 100 zm or more. Therefore, the preferred range of the second taper angle is 5 to: 15 °.
  • the press-fitting member of the present invention can be press-fitted with a high fastening force with high productivity into the fitting hole of the press-fitted member, and is useful as a component of various machines.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)

Abstract

L'élément d'ajustement par compression objet de la présente invention est utilisé pour le serrer intégralement par ajustement par compression avec un élément ajusté par compression. L'élément d'ajustement par compression est caractérisé en ce qu'une première partie conique est formée dans une direction dans laquelle son diamètre est augmenté plus que le diamètre maximal de la face de bout d'une partie de pointe du côté du début de l'ajustement par compression, une deuxième partie conique est formée dans une direction dans laquelle son diamètre est augmenté plus que le diamètre maximal de la première partie conique, et l'angle de conicité de la deuxième partie conique est formé de manière à être plus petit que l'angle de conicité de la première partie conique. L'élément d'ajustement par compression peut être ajusté par compression sur l'élément ajusté par compression avec un trou d'ajustement avec un grand rendement et une grande force de serrage.
PCT/JP2005/021022 2004-11-17 2005-11-16 Element d'ajustement par compression WO2006054587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-332802 2004-11-17
JP2004332802 2004-11-17

Publications (1)

Publication Number Publication Date
WO2006054587A1 true WO2006054587A1 (fr) 2006-05-26

Family

ID=36407128

Family Applications (1)

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PCT/JP2005/021022 WO2006054587A1 (fr) 2004-11-17 2005-11-16 Element d'ajustement par compression

Country Status (1)

Country Link
WO (1) WO2006054587A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008013020A (ja) * 2006-07-05 2008-01-24 Hino Motors Ltd ショック・アブソーバの取付け構造
JP2010190342A (ja) * 2009-02-19 2010-09-02 Mitsubishi Heavy Ind Ltd 圧入構造および圧入装置
JP2011017478A (ja) * 2009-07-08 2011-01-27 Ngk Spark Plug Co Ltd グロープラグ
CN110506166A (zh) * 2017-04-19 2019-11-26 喜利得股份公司 固定方法和固定系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6192309A (ja) * 1984-10-12 1986-05-10 本田技研工業株式会社 圧入部品
JPS6192308A (ja) * 1984-10-12 1986-05-10 本田技研工業株式会社 圧入部品
JPH0342004U (fr) * 1989-09-01 1991-04-22

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6192309A (ja) * 1984-10-12 1986-05-10 本田技研工業株式会社 圧入部品
JPS6192308A (ja) * 1984-10-12 1986-05-10 本田技研工業株式会社 圧入部品
JPH0342004U (fr) * 1989-09-01 1991-04-22

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008013020A (ja) * 2006-07-05 2008-01-24 Hino Motors Ltd ショック・アブソーバの取付け構造
JP2010190342A (ja) * 2009-02-19 2010-09-02 Mitsubishi Heavy Ind Ltd 圧入構造および圧入装置
JP2011017478A (ja) * 2009-07-08 2011-01-27 Ngk Spark Plug Co Ltd グロープラグ
CN110506166A (zh) * 2017-04-19 2019-11-26 喜利得股份公司 固定方法和固定系统
JP2020516830A (ja) * 2017-04-19 2020-06-11 ヒルティ アクチエンゲゼルシャフト 留め付け方法及び留め付けシステム
CN110506166B (zh) * 2017-04-19 2021-01-05 喜利得股份公司 固定方法和固定系统
CN112648268A (zh) * 2017-04-19 2021-04-13 喜利得股份公司 固定方法和固定系统

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