JPS5793120A - Hole-punching method for frp leaf spring - Google Patents

Hole-punching method for frp leaf spring

Info

Publication number
JPS5793120A
JPS5793120A JP55169363A JP16936380A JPS5793120A JP S5793120 A JPS5793120 A JP S5793120A JP 55169363 A JP55169363 A JP 55169363A JP 16936380 A JP16936380 A JP 16936380A JP S5793120 A JPS5793120 A JP S5793120A
Authority
JP
Japan
Prior art keywords
pin
hole
drawn out
frp
hardened
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.)
Pending
Application number
JP55169363A
Other languages
Japanese (ja)
Inventor
Shuji Hiromoto
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.)
NHK Spring Co Ltd
Original Assignee
NHK Spring 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 NHK Spring Co Ltd filed Critical NHK Spring Co Ltd
Priority to JP55169363A priority Critical patent/JPS5793120A/en
Publication of JPS5793120A publication Critical patent/JPS5793120A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/545—Perforating, cutting or machining during or after moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0045—Perforating

Abstract

PURPOSE: To obtain an FRP leaf spring substantially uniform in distribution of reinforcing fibers and thickness and retaining its strength by a method wherein a pin is forced into an FRP blank material before the material is hardened, the pin is drawn out, then the pin is again inserted into a hole formed in the material and is drawn out after the material is hardened.
CONSTITUTION: When the pin 2 is forced into the FRP blank material 1 and is once drawn out from the hole 3 before the material 1 is hardened, a peripheral wall part 4 having been moved in the direction of the tip of the pin 2 at the time of forcing-in is moved in the direction opposite to the moving direction at the time of forcing-in and it either returns substantially to the initial position or stops at a position slightly deviated backward from the initial position. Then, the pin 2 is again inserted into the hole 3, thereby returning the peripheral wall part 4 substantially to the initial position. After hardening the material 1 in this condition, the pin 2 is drawn out to obtain the objective article. A similar method can be applied also in the case where the hole 3 is not a through-hole.
COPYRIGHT: (C)1982,JPO&Japio
JP55169363A 1980-12-01 1980-12-01 Hole-punching method for frp leaf spring Pending JPS5793120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55169363A JPS5793120A (en) 1980-12-01 1980-12-01 Hole-punching method for frp leaf spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55169363A JPS5793120A (en) 1980-12-01 1980-12-01 Hole-punching method for frp leaf spring

Publications (1)

Publication Number Publication Date
JPS5793120A true JPS5793120A (en) 1982-06-10

Family

ID=15885184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55169363A Pending JPS5793120A (en) 1980-12-01 1980-12-01 Hole-punching method for frp leaf spring

Country Status (1)

Country Link
JP (1) JPS5793120A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264896A (en) * 1986-05-12 1987-11-17 町田　輝史 Manufacture of fiber-reinforced composite material with joining hole
JPH02229265A (en) * 1989-02-25 1990-09-12 Toyota Autom Loom Works Ltd Knit or woven fabric having open hole and tool for opening hole on knit or woven fabric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264896A (en) * 1986-05-12 1987-11-17 町田　輝史 Manufacture of fiber-reinforced composite material with joining hole
JPH02229265A (en) * 1989-02-25 1990-09-12 Toyota Autom Loom Works Ltd Knit or woven fabric having open hole and tool for opening hole on knit or woven fabric

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