EP0305368A4 - Timber reamer - Google Patents
Timber reamerInfo
- Publication number
- EP0305368A4 EP0305368A4 EP19870902341 EP87902341A EP0305368A4 EP 0305368 A4 EP0305368 A4 EP 0305368A4 EP 19870902341 EP19870902341 EP 19870902341 EP 87902341 A EP87902341 A EP 87902341A EP 0305368 A4 EP0305368 A4 EP 0305368A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- reamer
- shaft
- blade
- collar means
- bore
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G15/00—Boring or turning tools; Augers
Definitions
- This invention relates to a reamer.
- the invention relates to a reamer which can be used to ream holes in timber.
- a problem which exists in reaming holes in timber is that different reamers need to be used in soft wood and hardwood for efficient cutting. The problem arises because a reamer with a given set and depth of cut may not function efficien in both soft and hard woods.
- the object of the invention is to provide a reamer which can be used to cut efficiently in both soft and hard woods.
- a reamer comprising a shaft, a cutting blade projecting transversely from the shaft and collar means adjustably mounted on the shaft, the collar means being adjustable in axial position thereby adjusting the effective depth of cut of the cutting edge.
- Figure 1 is a side view of a reamer of the invention.
- Figure 2 is another side view of the reamer.
- Figure 3 is an end view from one end of the reamer.
- Figure 4 is an end view from the forward end of the reamer
- Figure 5 is a longitudinal cross-section through the reamer
- FIGS. 6 and 7 show schematic cross sectional views through cutting blades at lines 6-6 and 7-7 respectively.
- the reamer illustrated in Figure 1 comprises a cylindrical shaft 2 having an integral stem portion 4 of narrower diameter which is suitable for insertion in the chuck of a drill (not shown). Integrally formed with the shaft 2 is a hollow guide shaft 6 having a transverse hole 8 therethrough within which is located a blade 10. As best seen in Figure 5, the blade 10 is held in position by means of a screw 12 having an alien key head 14.
- the reamer includes a collar 16 which is slidably mounted on the shaft 2. The position of the collar 16 can be adjusted and fixed by means of a grub screw 18, as seen in Figure 5.
- the collar 16 includes a pair of flats 20 to permit shavings from the blade 10 to pass in the axial direction past the collar 16.
- the collar includes two forwardly projecting fingers
- Each of the fingers has a curved foot portion 24 at its free end.
- the curved foot portions 24 are curved in planes which are transverse to the axis of the reamer.
- a hole is drilled in the wood or timber using an auger (not shown) or the like approximately the same or slightly larger diameter as the guideshaft 6.
- the auger is then used to increase the diameter of the hole to a diameter which is the same as the length of - 3 - the blade 10.
- the collar 16 is adjusted in its axial position on the shaft 2 so that the foot portion 24 lies a predetermined distance D behind the cutting edges 26 of the blade thereby adjusting the depth of cut of the blade.
- the curved feet 24 bear against and slide over the uncut wood adjacent to the edges 26 and thereby prevent jamming and efficient cutting of the timber.
- the performance of the auger of the invention can be improved by using blades having cutting edges 26 which vary from a fine pitch adjacent to the shaft 6 to a relatively coarse pitch near the free ends of the blade, as shown by the typical cross-sections of Figures 6 and 7.
- the variation of pitch along the length of the blade (on both sides thereof) has been found to improve greatly the clearing of shavings and chips of wood towards the end of the reamer.
- the reamer of the invention can be used efficiently in both soft and hard woods which are dry or wet. Thus it is possible to use a single tool in a wide variety of applications.
- the shaft 2 includes a bore 30 for receipt of a crossbar (not shown) to assist in removal of the reamer from the workpiece.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Drilling Tools (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU5569/86 | 1986-04-22 | ||
AUPH556986 | 1986-04-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0305368A1 EP0305368A1 (en) | 1989-03-08 |
EP0305368A4 true EP0305368A4 (en) | 1991-01-30 |
Family
ID=3771569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870902341 Withdrawn EP0305368A4 (en) | 1986-04-22 | 1987-04-21 | Timber reamer |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0305368A4 (en) |
AU (1) | AU596182B2 (en) |
NZ (1) | NZ220040A (en) |
WO (1) | WO1987006519A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2192144B (en) * | 1986-04-29 | 1990-06-06 | Dorniver Limited | Method and apparatus for setting and changing tools |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB588052A (en) * | 1944-12-08 | 1947-05-13 | John Lambert Balmforth | Improvements in tool holders for lathes or the like metal cutting machines |
US2923336A (en) * | 1956-01-30 | 1960-02-02 | John W Jacobs | Expansion bit |
AU590932B2 (en) * | 1987-07-15 | 1989-11-23 | Lloyd Linson-Smith | Multi-size hole drill |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH262862A (en) * | 1947-12-22 | 1949-07-31 | Neuenschwander Johann | Knothole wood drill. |
CH276789A (en) * | 1949-11-10 | 1951-07-31 | Schmid Hans | Drilling tool for wood. |
US3620637A (en) * | 1969-07-15 | 1971-11-16 | Century Drill And Tool Co | Drill bit stop |
-
1987
- 1987-04-21 AU AU73095/87A patent/AU596182B2/en not_active Ceased
- 1987-04-21 WO PCT/AU1987/000108 patent/WO1987006519A1/en not_active Application Discontinuation
- 1987-04-21 EP EP19870902341 patent/EP0305368A4/en not_active Withdrawn
- 1987-04-22 NZ NZ22004087A patent/NZ220040A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB588052A (en) * | 1944-12-08 | 1947-05-13 | John Lambert Balmforth | Improvements in tool holders for lathes or the like metal cutting machines |
US2923336A (en) * | 1956-01-30 | 1960-02-02 | John W Jacobs | Expansion bit |
AU590932B2 (en) * | 1987-07-15 | 1989-11-23 | Lloyd Linson-Smith | Multi-size hole drill |
Non-Patent Citations (1)
Title |
---|
See also references of WO8706519A1 * |
Also Published As
Publication number | Publication date |
---|---|
NZ220040A (en) | 1990-06-26 |
AU7309587A (en) | 1987-11-24 |
EP0305368A1 (en) | 1989-03-08 |
AU596182B2 (en) | 1990-04-26 |
WO1987006519A1 (en) | 1987-11-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19881024 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19901211 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
18W | Application withdrawn |
Withdrawal date: 19910212 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
R18W | Application withdrawn (corrected) |
Effective date: 19910212 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KNIGHT, JOHN, KEITH |