EP0046977A3 - Method of stretching saw blades on a gang saw provided with a hydraulically actuated stretching device, hydraulic stretching device and stretching tool - Google Patents

Method of stretching saw blades on a gang saw provided with a hydraulically actuated stretching device, hydraulic stretching device and stretching tool Download PDF

Info

Publication number
EP0046977A3
EP0046977A3 EP81106603A EP81106603A EP0046977A3 EP 0046977 A3 EP0046977 A3 EP 0046977A3 EP 81106603 A EP81106603 A EP 81106603A EP 81106603 A EP81106603 A EP 81106603A EP 0046977 A3 EP0046977 A3 EP 0046977A3
Authority
EP
European Patent Office
Prior art keywords
stretching
saw
hydraulic
stretching device
hydraulically actuated
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.)
Granted
Application number
EP81106603A
Other languages
German (de)
Other versions
EP0046977A2 (en
EP0046977B1 (en
Inventor
Ulrich Buhler
Rudolf Ineichen
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.)
ULRICH BUHLER AG SAGEN- und MASCHINENMESSERFABRIK
Original Assignee
ULRICH BUHLER AG SAGEN- und MASCHINENMESSERFABRIK
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 ULRICH BUHLER AG SAGEN- und MASCHINENMESSERFABRIK filed Critical ULRICH BUHLER AG SAGEN- und MASCHINENMESSERFABRIK
Priority to AT81106603T priority Critical patent/ATE11020T1/en
Publication of EP0046977A2 publication Critical patent/EP0046977A2/en
Publication of EP0046977A3 publication Critical patent/EP0046977A3/en
Application granted granted Critical
Publication of EP0046977B1 publication Critical patent/EP0046977B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/28—Components
    • B27B3/30—Blade attachments, e.g. saw buckles; Stretching devices
    • B27B3/34—Blade attachments, e.g. saw buckles; Stretching devices the stretching devices being actuated by fluid pressure

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

1. Hydraulic tensioning device (21) for tensioning saw blades (19) on a saw frame, said tensioning device (21) comprising at least one piston (39) capable of being actuated by a hydraulic fluid to tension the saw blade (19) and to keep it in tensioned position by the pressure in the hydraulic fluid, characterized in that the tensioning device comprises a body (31) having a width not being larger than the usual center-to-center-distance between two saw blades (19), in that the body (31) comprises means (23, 25) for attaching a saw blade (19) or a saw blade holder, and in that in the body (31), at least on one side of the means (23), at least one cylinder bore (37) for receiving the hydraulic piston (39) is provided, said cylinder bore (37) being connected to a pressure generator (57) located in the body (31).
EP81106603A 1980-09-02 1981-08-26 Hydraulically actuated stretching device for stretching saw blades in a gang saw Expired EP0046977B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81106603T ATE11020T1 (en) 1980-09-02 1981-08-26 HYDRAULIC CLAMPING DEVICE ATTACHABLE TO A GATE FRAME FOR CLAMPING SAW BLADES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH659680 1980-09-02
CH6596/80 1980-09-02

Publications (3)

Publication Number Publication Date
EP0046977A2 EP0046977A2 (en) 1982-03-10
EP0046977A3 true EP0046977A3 (en) 1983-02-16
EP0046977B1 EP0046977B1 (en) 1985-01-02

Family

ID=4312078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106603A Expired EP0046977B1 (en) 1980-09-02 1981-08-26 Hydraulically actuated stretching device for stretching saw blades in a gang saw

Country Status (3)

Country Link
EP (1) EP0046977B1 (en)
AT (1) ATE11020T1 (en)
DE (1) DE3168038D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512821C1 (en) * 1985-04-10 1986-10-30 Adolf 8961 Weitnau Gudermann Hydraulic clamping device for clamping saw blades in saw frames
DE3514728A1 (en) * 1985-04-24 1986-10-30 Fa. Röttger Jansen-Herfeld, 5630 Remscheid HYDRAULIC SAW TENSIONER WITH EXTERNAL SEAL
CN115104448B (en) * 2022-06-08 2023-04-18 浙江师范大学 Chain saw with automatically tensioned chain

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE661577C (en) * 1934-10-21 1938-06-22 Alfons Wasserkampf Device for joint clamping of all saws in full gates
DE1013412B (en) * 1953-09-11 1957-08-08 Jansen Fa R Hydraulic clamping device for joint clamping of all saws in full gates
DE1169641B (en) * 1960-01-26 1964-05-06 Josef Thoeress Hydraulic saw clamp
DE1453158A1 (en) * 1963-08-16 1969-07-17 Karl Rupprecht Hydraulic saw clamp
DE1503928A1 (en) * 1965-05-04 1969-08-07 Andreas Bank Clamping device for the saw blade of gang saws

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2656961C2 (en) * 1976-12-16 1983-12-29 Fa. Richard Jansen, 5630 Remscheid Device for tensioning saw blades in the frame of frame saws

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE661577C (en) * 1934-10-21 1938-06-22 Alfons Wasserkampf Device for joint clamping of all saws in full gates
DE1013412B (en) * 1953-09-11 1957-08-08 Jansen Fa R Hydraulic clamping device for joint clamping of all saws in full gates
DE1169641B (en) * 1960-01-26 1964-05-06 Josef Thoeress Hydraulic saw clamp
DE1453158A1 (en) * 1963-08-16 1969-07-17 Karl Rupprecht Hydraulic saw clamp
DE1503928A1 (en) * 1965-05-04 1969-08-07 Andreas Bank Clamping device for the saw blade of gang saws

Also Published As

Publication number Publication date
DE3168038D1 (en) 1985-02-14
EP0046977A2 (en) 1982-03-10
ATE11020T1 (en) 1985-01-15
EP0046977B1 (en) 1985-01-02

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