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JPS56156904A - Tone arm pipe and its production - Google Patents

Tone arm pipe and its production

Info

Publication number
JPS56156904A
JPS56156904A JP5789780A JP5789780A JPS56156904A JP S56156904 A JPS56156904 A JP S56156904A JP 5789780 A JP5789780 A JP 5789780A JP 5789780 A JP5789780 A JP 5789780A JP S56156904 A JPS56156904 A JP S56156904A
Authority
JP
Japan
Prior art keywords
pipe
longer
deltad
burrs
diameter part
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
JP5789780A
Other languages
Japanese (ja)
Inventor
Yokichi Oka
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP5789780A priority Critical patent/JPS56156904A/en
Publication of JPS56156904A publication Critical patent/JPS56156904A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
    • G11B3/30—Supporting in an inoperative position
    • G11B3/31—Construction of arms

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To ensure a solid and precise connection of a tone pipe to a member to be connected by an adhesive by forming the pipe by compression so that the outer circumferential section has an oval shape and the burrs caused at the longer diameter part and then finishing the pipe with elimintion of the burrs. CONSTITUTION:A pipe molding cavity 4 is formed in cooperation with the upper and lower molds 1 and 2 plus a core metal 3. The outer circumferential section of the cavity 4 has an oval shape. Thus a pipe 6 having burrs 5 at its longer diameter part is obtained. The longer and shorter diameters of the pipe 6 are set at D+DELTAD and D-DELTAD respectively, and thus an oval pipe 6 having a longer diameter D and a shorter diameter D-DELTAD is obtained by carrying out a drawing work with a dice having an inner diameter D. A member 8 to be connected such as a pipe holder or the like is connected to the pipe 6, and a hole 8a is made into a perfect circle having an inner diameter D+DELTAE. As a result, the clearance between the hole 8a and the longer diameter part of a pipe 6' has the minimum extent DELTAE only that is necessary for fitting. Thus an accurate fitting is possible with a small amount of play.
JP5789780A 1980-05-02 1980-05-02 Tone arm pipe and its production Pending JPS56156904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5789780A JPS56156904A (en) 1980-05-02 1980-05-02 Tone arm pipe and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5789780A JPS56156904A (en) 1980-05-02 1980-05-02 Tone arm pipe and its production

Publications (1)

Publication Number Publication Date
JPS56156904A true JPS56156904A (en) 1981-12-03

Family

ID=13068769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5789780A Pending JPS56156904A (en) 1980-05-02 1980-05-02 Tone arm pipe and its production

Country Status (1)

Country Link
JP (1) JPS56156904A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5783227A (en) * 1996-01-22 1998-07-21 Cordis Corporation Catheter balloon folding device
US6033380A (en) * 1998-02-13 2000-03-07 Cordis Corporation Six-pleated catheter balloon and device for forming same
CN106486139A (en) * 2016-12-27 2017-03-08 合肥市菲凡音响有限责任公司 A kind of tone arm installing plate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5783227A (en) * 1996-01-22 1998-07-21 Cordis Corporation Catheter balloon folding device
US6033380A (en) * 1998-02-13 2000-03-07 Cordis Corporation Six-pleated catheter balloon and device for forming same
CN106486139A (en) * 2016-12-27 2017-03-08 合肥市菲凡音响有限责任公司 A kind of tone arm installing plate
CN106486139B (en) * 2016-12-27 2018-08-07 合肥市菲凡音响有限责任公司 A kind of tone arm mounting plate

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